Commit e717fc6d1a2b459ae8352f7af5945cc0c216ab1e
Committed by
Heiko Schocher
1 parent
92c23c9226
Exists in
master
and in
50 other branches
i2c: samsung: register i2c busses for Exynso5420 and Exynos5250
This patch adds the U_BOOT_I2C_ADAP_COMPLETE defines for channels on Exynos5420 and Exynos5250 and also adds support for init function for hsi2c channels Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@samsung.com>
Showing 2 changed files with 182 additions and 48 deletions Inline Diff
README
1 | # | 1 | # |
2 | # (C) Copyright 2000 - 2013 | 2 | # (C) Copyright 2000 - 2013 |
3 | # Wolfgang Denk, DENX Software Engineering, wd@denx.de. | 3 | # Wolfgang Denk, DENX Software Engineering, wd@denx.de. |
4 | # | 4 | # |
5 | # SPDX-License-Identifier: GPL-2.0+ | 5 | # SPDX-License-Identifier: GPL-2.0+ |
6 | # | 6 | # |
7 | 7 | ||
8 | Summary: | 8 | Summary: |
9 | ======== | 9 | ======== |
10 | 10 | ||
11 | This directory contains the source code for U-Boot, a boot loader for | 11 | This directory contains the source code for U-Boot, a boot loader for |
12 | Embedded boards based on PowerPC, ARM, MIPS and several other | 12 | Embedded boards based on PowerPC, ARM, MIPS and several other |
13 | processors, which can be installed in a boot ROM and used to | 13 | processors, which can be installed in a boot ROM and used to |
14 | initialize and test the hardware or to download and run application | 14 | initialize and test the hardware or to download and run application |
15 | code. | 15 | code. |
16 | 16 | ||
17 | The development of U-Boot is closely related to Linux: some parts of | 17 | The development of U-Boot is closely related to Linux: some parts of |
18 | the source code originate in the Linux source tree, we have some | 18 | the source code originate in the Linux source tree, we have some |
19 | header files in common, and special provision has been made to | 19 | header files in common, and special provision has been made to |
20 | support booting of Linux images. | 20 | support booting of Linux images. |
21 | 21 | ||
22 | Some attention has been paid to make this software easily | 22 | Some attention has been paid to make this software easily |
23 | configurable and extendable. For instance, all monitor commands are | 23 | configurable and extendable. For instance, all monitor commands are |
24 | implemented with the same call interface, so that it's very easy to | 24 | implemented with the same call interface, so that it's very easy to |
25 | add new commands. Also, instead of permanently adding rarely used | 25 | add new commands. Also, instead of permanently adding rarely used |
26 | code (for instance hardware test utilities) to the monitor, you can | 26 | code (for instance hardware test utilities) to the monitor, you can |
27 | load and run it dynamically. | 27 | load and run it dynamically. |
28 | 28 | ||
29 | 29 | ||
30 | Status: | 30 | Status: |
31 | ======= | 31 | ======= |
32 | 32 | ||
33 | In general, all boards for which a configuration option exists in the | 33 | In general, all boards for which a configuration option exists in the |
34 | Makefile have been tested to some extent and can be considered | 34 | Makefile have been tested to some extent and can be considered |
35 | "working". In fact, many of them are used in production systems. | 35 | "working". In fact, many of them are used in production systems. |
36 | 36 | ||
37 | In case of problems see the CHANGELOG and CREDITS files to find out | 37 | In case of problems see the CHANGELOG and CREDITS files to find out |
38 | who contributed the specific port. The boards.cfg file lists board | 38 | who contributed the specific port. The boards.cfg file lists board |
39 | maintainers. | 39 | maintainers. |
40 | 40 | ||
41 | Note: There is no CHANGELOG file in the actual U-Boot source tree; | 41 | Note: There is no CHANGELOG file in the actual U-Boot source tree; |
42 | it can be created dynamically from the Git log using: | 42 | it can be created dynamically from the Git log using: |
43 | 43 | ||
44 | make CHANGELOG | 44 | make CHANGELOG |
45 | 45 | ||
46 | 46 | ||
47 | Where to get help: | 47 | Where to get help: |
48 | ================== | 48 | ================== |
49 | 49 | ||
50 | In case you have questions about, problems with or contributions for | 50 | In case you have questions about, problems with or contributions for |
51 | U-Boot you should send a message to the U-Boot mailing list at | 51 | U-Boot you should send a message to the U-Boot mailing list at |
52 | <u-boot@lists.denx.de>. There is also an archive of previous traffic | 52 | <u-boot@lists.denx.de>. There is also an archive of previous traffic |
53 | on the mailing list - please search the archive before asking FAQ's. | 53 | on the mailing list - please search the archive before asking FAQ's. |
54 | Please see http://lists.denx.de/pipermail/u-boot and | 54 | Please see http://lists.denx.de/pipermail/u-boot and |
55 | http://dir.gmane.org/gmane.comp.boot-loaders.u-boot | 55 | http://dir.gmane.org/gmane.comp.boot-loaders.u-boot |
56 | 56 | ||
57 | 57 | ||
58 | Where to get source code: | 58 | Where to get source code: |
59 | ========================= | 59 | ========================= |
60 | 60 | ||
61 | The U-Boot source code is maintained in the git repository at | 61 | The U-Boot source code is maintained in the git repository at |
62 | git://www.denx.de/git/u-boot.git ; you can browse it online at | 62 | git://www.denx.de/git/u-boot.git ; you can browse it online at |
63 | http://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary | 63 | http://www.denx.de/cgi-bin/gitweb.cgi?p=u-boot.git;a=summary |
64 | 64 | ||
65 | The "snapshot" links on this page allow you to download tarballs of | 65 | The "snapshot" links on this page allow you to download tarballs of |
66 | any version you might be interested in. Official releases are also | 66 | any version you might be interested in. Official releases are also |
67 | available for FTP download from the ftp://ftp.denx.de/pub/u-boot/ | 67 | available for FTP download from the ftp://ftp.denx.de/pub/u-boot/ |
68 | directory. | 68 | directory. |
69 | 69 | ||
70 | Pre-built (and tested) images are available from | 70 | Pre-built (and tested) images are available from |
71 | ftp://ftp.denx.de/pub/u-boot/images/ | 71 | ftp://ftp.denx.de/pub/u-boot/images/ |
72 | 72 | ||
73 | 73 | ||
74 | Where we come from: | 74 | Where we come from: |
75 | =================== | 75 | =================== |
76 | 76 | ||
77 | - start from 8xxrom sources | 77 | - start from 8xxrom sources |
78 | - create PPCBoot project (http://sourceforge.net/projects/ppcboot) | 78 | - create PPCBoot project (http://sourceforge.net/projects/ppcboot) |
79 | - clean up code | 79 | - clean up code |
80 | - make it easier to add custom boards | 80 | - make it easier to add custom boards |
81 | - make it possible to add other [PowerPC] CPUs | 81 | - make it possible to add other [PowerPC] CPUs |
82 | - extend functions, especially: | 82 | - extend functions, especially: |
83 | * Provide extended interface to Linux boot loader | 83 | * Provide extended interface to Linux boot loader |
84 | * S-Record download | 84 | * S-Record download |
85 | * network boot | 85 | * network boot |
86 | * PCMCIA / CompactFlash / ATA disk / SCSI ... boot | 86 | * PCMCIA / CompactFlash / ATA disk / SCSI ... boot |
87 | - create ARMBoot project (http://sourceforge.net/projects/armboot) | 87 | - create ARMBoot project (http://sourceforge.net/projects/armboot) |
88 | - add other CPU families (starting with ARM) | 88 | - add other CPU families (starting with ARM) |
89 | - create U-Boot project (http://sourceforge.net/projects/u-boot) | 89 | - create U-Boot project (http://sourceforge.net/projects/u-boot) |
90 | - current project page: see http://www.denx.de/wiki/U-Boot | 90 | - current project page: see http://www.denx.de/wiki/U-Boot |
91 | 91 | ||
92 | 92 | ||
93 | Names and Spelling: | 93 | Names and Spelling: |
94 | =================== | 94 | =================== |
95 | 95 | ||
96 | The "official" name of this project is "Das U-Boot". The spelling | 96 | The "official" name of this project is "Das U-Boot". The spelling |
97 | "U-Boot" shall be used in all written text (documentation, comments | 97 | "U-Boot" shall be used in all written text (documentation, comments |
98 | in source files etc.). Example: | 98 | in source files etc.). Example: |
99 | 99 | ||
100 | This is the README file for the U-Boot project. | 100 | This is the README file for the U-Boot project. |
101 | 101 | ||
102 | File names etc. shall be based on the string "u-boot". Examples: | 102 | File names etc. shall be based on the string "u-boot". Examples: |
103 | 103 | ||
104 | include/asm-ppc/u-boot.h | 104 | include/asm-ppc/u-boot.h |
105 | 105 | ||
106 | #include <asm/u-boot.h> | 106 | #include <asm/u-boot.h> |
107 | 107 | ||
108 | Variable names, preprocessor constants etc. shall be either based on | 108 | Variable names, preprocessor constants etc. shall be either based on |
109 | the string "u_boot" or on "U_BOOT". Example: | 109 | the string "u_boot" or on "U_BOOT". Example: |
110 | 110 | ||
111 | U_BOOT_VERSION u_boot_logo | 111 | U_BOOT_VERSION u_boot_logo |
112 | IH_OS_U_BOOT u_boot_hush_start | 112 | IH_OS_U_BOOT u_boot_hush_start |
113 | 113 | ||
114 | 114 | ||
115 | Versioning: | 115 | Versioning: |
116 | =========== | 116 | =========== |
117 | 117 | ||
118 | Starting with the release in October 2008, the names of the releases | 118 | Starting with the release in October 2008, the names of the releases |
119 | were changed from numerical release numbers without deeper meaning | 119 | were changed from numerical release numbers without deeper meaning |
120 | into a time stamp based numbering. Regular releases are identified by | 120 | into a time stamp based numbering. Regular releases are identified by |
121 | names consisting of the calendar year and month of the release date. | 121 | names consisting of the calendar year and month of the release date. |
122 | Additional fields (if present) indicate release candidates or bug fix | 122 | Additional fields (if present) indicate release candidates or bug fix |
123 | releases in "stable" maintenance trees. | 123 | releases in "stable" maintenance trees. |
124 | 124 | ||
125 | Examples: | 125 | Examples: |
126 | U-Boot v2009.11 - Release November 2009 | 126 | U-Boot v2009.11 - Release November 2009 |
127 | U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree | 127 | U-Boot v2009.11.1 - Release 1 in version November 2009 stable tree |
128 | U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release | 128 | U-Boot v2010.09-rc1 - Release candiate 1 for September 2010 release |
129 | 129 | ||
130 | 130 | ||
131 | Directory Hierarchy: | 131 | Directory Hierarchy: |
132 | ==================== | 132 | ==================== |
133 | 133 | ||
134 | /arch Architecture specific files | 134 | /arch Architecture specific files |
135 | /arm Files generic to ARM architecture | 135 | /arm Files generic to ARM architecture |
136 | /cpu CPU specific files | 136 | /cpu CPU specific files |
137 | /arm720t Files specific to ARM 720 CPUs | 137 | /arm720t Files specific to ARM 720 CPUs |
138 | /arm920t Files specific to ARM 920 CPUs | 138 | /arm920t Files specific to ARM 920 CPUs |
139 | /at91 Files specific to Atmel AT91RM9200 CPU | 139 | /at91 Files specific to Atmel AT91RM9200 CPU |
140 | /imx Files specific to Freescale MC9328 i.MX CPUs | 140 | /imx Files specific to Freescale MC9328 i.MX CPUs |
141 | /s3c24x0 Files specific to Samsung S3C24X0 CPUs | 141 | /s3c24x0 Files specific to Samsung S3C24X0 CPUs |
142 | /arm926ejs Files specific to ARM 926 CPUs | 142 | /arm926ejs Files specific to ARM 926 CPUs |
143 | /arm1136 Files specific to ARM 1136 CPUs | 143 | /arm1136 Files specific to ARM 1136 CPUs |
144 | /ixp Files specific to Intel XScale IXP CPUs | 144 | /ixp Files specific to Intel XScale IXP CPUs |
145 | /pxa Files specific to Intel XScale PXA CPUs | 145 | /pxa Files specific to Intel XScale PXA CPUs |
146 | /sa1100 Files specific to Intel StrongARM SA1100 CPUs | 146 | /sa1100 Files specific to Intel StrongARM SA1100 CPUs |
147 | /lib Architecture specific library files | 147 | /lib Architecture specific library files |
148 | /avr32 Files generic to AVR32 architecture | 148 | /avr32 Files generic to AVR32 architecture |
149 | /cpu CPU specific files | 149 | /cpu CPU specific files |
150 | /lib Architecture specific library files | 150 | /lib Architecture specific library files |
151 | /blackfin Files generic to Analog Devices Blackfin architecture | 151 | /blackfin Files generic to Analog Devices Blackfin architecture |
152 | /cpu CPU specific files | 152 | /cpu CPU specific files |
153 | /lib Architecture specific library files | 153 | /lib Architecture specific library files |
154 | /m68k Files generic to m68k architecture | 154 | /m68k Files generic to m68k architecture |
155 | /cpu CPU specific files | 155 | /cpu CPU specific files |
156 | /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs | 156 | /mcf52x2 Files specific to Freescale ColdFire MCF52x2 CPUs |
157 | /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs | 157 | /mcf5227x Files specific to Freescale ColdFire MCF5227x CPUs |
158 | /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs | 158 | /mcf532x Files specific to Freescale ColdFire MCF5329 CPUs |
159 | /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs | 159 | /mcf5445x Files specific to Freescale ColdFire MCF5445x CPUs |
160 | /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs | 160 | /mcf547x_8x Files specific to Freescale ColdFire MCF547x_8x CPUs |
161 | /lib Architecture specific library files | 161 | /lib Architecture specific library files |
162 | /microblaze Files generic to microblaze architecture | 162 | /microblaze Files generic to microblaze architecture |
163 | /cpu CPU specific files | 163 | /cpu CPU specific files |
164 | /lib Architecture specific library files | 164 | /lib Architecture specific library files |
165 | /mips Files generic to MIPS architecture | 165 | /mips Files generic to MIPS architecture |
166 | /cpu CPU specific files | 166 | /cpu CPU specific files |
167 | /mips32 Files specific to MIPS32 CPUs | 167 | /mips32 Files specific to MIPS32 CPUs |
168 | /xburst Files specific to Ingenic XBurst CPUs | 168 | /xburst Files specific to Ingenic XBurst CPUs |
169 | /lib Architecture specific library files | 169 | /lib Architecture specific library files |
170 | /nds32 Files generic to NDS32 architecture | 170 | /nds32 Files generic to NDS32 architecture |
171 | /cpu CPU specific files | 171 | /cpu CPU specific files |
172 | /n1213 Files specific to Andes Technology N1213 CPUs | 172 | /n1213 Files specific to Andes Technology N1213 CPUs |
173 | /lib Architecture specific library files | 173 | /lib Architecture specific library files |
174 | /nios2 Files generic to Altera NIOS2 architecture | 174 | /nios2 Files generic to Altera NIOS2 architecture |
175 | /cpu CPU specific files | 175 | /cpu CPU specific files |
176 | /lib Architecture specific library files | 176 | /lib Architecture specific library files |
177 | /openrisc Files generic to OpenRISC architecture | 177 | /openrisc Files generic to OpenRISC architecture |
178 | /cpu CPU specific files | 178 | /cpu CPU specific files |
179 | /lib Architecture specific library files | 179 | /lib Architecture specific library files |
180 | /powerpc Files generic to PowerPC architecture | 180 | /powerpc Files generic to PowerPC architecture |
181 | /cpu CPU specific files | 181 | /cpu CPU specific files |
182 | /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs | 182 | /74xx_7xx Files specific to Freescale MPC74xx and 7xx CPUs |
183 | /mpc5xx Files specific to Freescale MPC5xx CPUs | 183 | /mpc5xx Files specific to Freescale MPC5xx CPUs |
184 | /mpc5xxx Files specific to Freescale MPC5xxx CPUs | 184 | /mpc5xxx Files specific to Freescale MPC5xxx CPUs |
185 | /mpc8xx Files specific to Freescale MPC8xx CPUs | 185 | /mpc8xx Files specific to Freescale MPC8xx CPUs |
186 | /mpc824x Files specific to Freescale MPC824x CPUs | 186 | /mpc824x Files specific to Freescale MPC824x CPUs |
187 | /mpc8260 Files specific to Freescale MPC8260 CPUs | 187 | /mpc8260 Files specific to Freescale MPC8260 CPUs |
188 | /mpc85xx Files specific to Freescale MPC85xx CPUs | 188 | /mpc85xx Files specific to Freescale MPC85xx CPUs |
189 | /ppc4xx Files specific to AMCC PowerPC 4xx CPUs | 189 | /ppc4xx Files specific to AMCC PowerPC 4xx CPUs |
190 | /lib Architecture specific library files | 190 | /lib Architecture specific library files |
191 | /sh Files generic to SH architecture | 191 | /sh Files generic to SH architecture |
192 | /cpu CPU specific files | 192 | /cpu CPU specific files |
193 | /sh2 Files specific to sh2 CPUs | 193 | /sh2 Files specific to sh2 CPUs |
194 | /sh3 Files specific to sh3 CPUs | 194 | /sh3 Files specific to sh3 CPUs |
195 | /sh4 Files specific to sh4 CPUs | 195 | /sh4 Files specific to sh4 CPUs |
196 | /lib Architecture specific library files | 196 | /lib Architecture specific library files |
197 | /sparc Files generic to SPARC architecture | 197 | /sparc Files generic to SPARC architecture |
198 | /cpu CPU specific files | 198 | /cpu CPU specific files |
199 | /leon2 Files specific to Gaisler LEON2 SPARC CPU | 199 | /leon2 Files specific to Gaisler LEON2 SPARC CPU |
200 | /leon3 Files specific to Gaisler LEON3 SPARC CPU | 200 | /leon3 Files specific to Gaisler LEON3 SPARC CPU |
201 | /lib Architecture specific library files | 201 | /lib Architecture specific library files |
202 | /x86 Files generic to x86 architecture | 202 | /x86 Files generic to x86 architecture |
203 | /cpu CPU specific files | 203 | /cpu CPU specific files |
204 | /lib Architecture specific library files | 204 | /lib Architecture specific library files |
205 | /api Machine/arch independent API for external apps | 205 | /api Machine/arch independent API for external apps |
206 | /board Board dependent files | 206 | /board Board dependent files |
207 | /common Misc architecture independent functions | 207 | /common Misc architecture independent functions |
208 | /disk Code for disk drive partition handling | 208 | /disk Code for disk drive partition handling |
209 | /doc Documentation (don't expect too much) | 209 | /doc Documentation (don't expect too much) |
210 | /drivers Commonly used device drivers | 210 | /drivers Commonly used device drivers |
211 | /dts Contains Makefile for building internal U-Boot fdt. | 211 | /dts Contains Makefile for building internal U-Boot fdt. |
212 | /examples Example code for standalone applications, etc. | 212 | /examples Example code for standalone applications, etc. |
213 | /fs Filesystem code (cramfs, ext2, jffs2, etc.) | 213 | /fs Filesystem code (cramfs, ext2, jffs2, etc.) |
214 | /include Header Files | 214 | /include Header Files |
215 | /lib Files generic to all architectures | 215 | /lib Files generic to all architectures |
216 | /libfdt Library files to support flattened device trees | 216 | /libfdt Library files to support flattened device trees |
217 | /lzma Library files to support LZMA decompression | 217 | /lzma Library files to support LZMA decompression |
218 | /lzo Library files to support LZO decompression | 218 | /lzo Library files to support LZO decompression |
219 | /net Networking code | 219 | /net Networking code |
220 | /post Power On Self Test | 220 | /post Power On Self Test |
221 | /spl Secondary Program Loader framework | 221 | /spl Secondary Program Loader framework |
222 | /tools Tools to build S-Record or U-Boot images, etc. | 222 | /tools Tools to build S-Record or U-Boot images, etc. |
223 | 223 | ||
224 | Software Configuration: | 224 | Software Configuration: |
225 | ======================= | 225 | ======================= |
226 | 226 | ||
227 | Configuration is usually done using C preprocessor defines; the | 227 | Configuration is usually done using C preprocessor defines; the |
228 | rationale behind that is to avoid dead code whenever possible. | 228 | rationale behind that is to avoid dead code whenever possible. |
229 | 229 | ||
230 | There are two classes of configuration variables: | 230 | There are two classes of configuration variables: |
231 | 231 | ||
232 | * Configuration _OPTIONS_: | 232 | * Configuration _OPTIONS_: |
233 | These are selectable by the user and have names beginning with | 233 | These are selectable by the user and have names beginning with |
234 | "CONFIG_". | 234 | "CONFIG_". |
235 | 235 | ||
236 | * Configuration _SETTINGS_: | 236 | * Configuration _SETTINGS_: |
237 | These depend on the hardware etc. and should not be meddled with if | 237 | These depend on the hardware etc. and should not be meddled with if |
238 | you don't know what you're doing; they have names beginning with | 238 | you don't know what you're doing; they have names beginning with |
239 | "CONFIG_SYS_". | 239 | "CONFIG_SYS_". |
240 | 240 | ||
241 | Later we will add a configuration tool - probably similar to or even | 241 | Later we will add a configuration tool - probably similar to or even |
242 | identical to what's used for the Linux kernel. Right now, we have to | 242 | identical to what's used for the Linux kernel. Right now, we have to |
243 | do the configuration by hand, which means creating some symbolic | 243 | do the configuration by hand, which means creating some symbolic |
244 | links and editing some configuration files. We use the TQM8xxL boards | 244 | links and editing some configuration files. We use the TQM8xxL boards |
245 | as an example here. | 245 | as an example here. |
246 | 246 | ||
247 | 247 | ||
248 | Selection of Processor Architecture and Board Type: | 248 | Selection of Processor Architecture and Board Type: |
249 | --------------------------------------------------- | 249 | --------------------------------------------------- |
250 | 250 | ||
251 | For all supported boards there are ready-to-use default | 251 | For all supported boards there are ready-to-use default |
252 | configurations available; just type "make <board_name>_config". | 252 | configurations available; just type "make <board_name>_config". |
253 | 253 | ||
254 | Example: For a TQM823L module type: | 254 | Example: For a TQM823L module type: |
255 | 255 | ||
256 | cd u-boot | 256 | cd u-boot |
257 | make TQM823L_config | 257 | make TQM823L_config |
258 | 258 | ||
259 | For the Cogent platform, you need to specify the CPU type as well; | 259 | For the Cogent platform, you need to specify the CPU type as well; |
260 | e.g. "make cogent_mpc8xx_config". And also configure the cogent | 260 | e.g. "make cogent_mpc8xx_config". And also configure the cogent |
261 | directory according to the instructions in cogent/README. | 261 | directory according to the instructions in cogent/README. |
262 | 262 | ||
263 | 263 | ||
264 | Configuration Options: | 264 | Configuration Options: |
265 | ---------------------- | 265 | ---------------------- |
266 | 266 | ||
267 | Configuration depends on the combination of board and CPU type; all | 267 | Configuration depends on the combination of board and CPU type; all |
268 | such information is kept in a configuration file | 268 | such information is kept in a configuration file |
269 | "include/configs/<board_name>.h". | 269 | "include/configs/<board_name>.h". |
270 | 270 | ||
271 | Example: For a TQM823L module, all configuration settings are in | 271 | Example: For a TQM823L module, all configuration settings are in |
272 | "include/configs/TQM823L.h". | 272 | "include/configs/TQM823L.h". |
273 | 273 | ||
274 | 274 | ||
275 | Many of the options are named exactly as the corresponding Linux | 275 | Many of the options are named exactly as the corresponding Linux |
276 | kernel configuration options. The intention is to make it easier to | 276 | kernel configuration options. The intention is to make it easier to |
277 | build a config tool - later. | 277 | build a config tool - later. |
278 | 278 | ||
279 | 279 | ||
280 | The following options need to be configured: | 280 | The following options need to be configured: |
281 | 281 | ||
282 | - CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. | 282 | - CPU Type: Define exactly one, e.g. CONFIG_MPC85XX. |
283 | 283 | ||
284 | - Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. | 284 | - Board Type: Define exactly one, e.g. CONFIG_MPC8540ADS. |
285 | 285 | ||
286 | - CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) | 286 | - CPU Daughterboard Type: (if CONFIG_ATSTK1000 is defined) |
287 | Define exactly one, e.g. CONFIG_ATSTK1002 | 287 | Define exactly one, e.g. CONFIG_ATSTK1002 |
288 | 288 | ||
289 | - CPU Module Type: (if CONFIG_COGENT is defined) | 289 | - CPU Module Type: (if CONFIG_COGENT is defined) |
290 | Define exactly one of | 290 | Define exactly one of |
291 | CONFIG_CMA286_60_OLD | 291 | CONFIG_CMA286_60_OLD |
292 | --- FIXME --- not tested yet: | 292 | --- FIXME --- not tested yet: |
293 | CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, | 293 | CONFIG_CMA286_60, CONFIG_CMA286_21, CONFIG_CMA286_60P, |
294 | CONFIG_CMA287_23, CONFIG_CMA287_50 | 294 | CONFIG_CMA287_23, CONFIG_CMA287_50 |
295 | 295 | ||
296 | - Motherboard Type: (if CONFIG_COGENT is defined) | 296 | - Motherboard Type: (if CONFIG_COGENT is defined) |
297 | Define exactly one of | 297 | Define exactly one of |
298 | CONFIG_CMA101, CONFIG_CMA102 | 298 | CONFIG_CMA101, CONFIG_CMA102 |
299 | 299 | ||
300 | - Motherboard I/O Modules: (if CONFIG_COGENT is defined) | 300 | - Motherboard I/O Modules: (if CONFIG_COGENT is defined) |
301 | Define one or more of | 301 | Define one or more of |
302 | CONFIG_CMA302 | 302 | CONFIG_CMA302 |
303 | 303 | ||
304 | - Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) | 304 | - Motherboard Options: (if CONFIG_CMA101 or CONFIG_CMA102 are defined) |
305 | Define one or more of | 305 | Define one or more of |
306 | CONFIG_LCD_HEARTBEAT - update a character position on | 306 | CONFIG_LCD_HEARTBEAT - update a character position on |
307 | the LCD display every second with | 307 | the LCD display every second with |
308 | a "rotator" |\-/|\-/ | 308 | a "rotator" |\-/|\-/ |
309 | 309 | ||
310 | - Board flavour: (if CONFIG_MPC8260ADS is defined) | 310 | - Board flavour: (if CONFIG_MPC8260ADS is defined) |
311 | CONFIG_ADSTYPE | 311 | CONFIG_ADSTYPE |
312 | Possible values are: | 312 | Possible values are: |
313 | CONFIG_SYS_8260ADS - original MPC8260ADS | 313 | CONFIG_SYS_8260ADS - original MPC8260ADS |
314 | CONFIG_SYS_8266ADS - MPC8266ADS | 314 | CONFIG_SYS_8266ADS - MPC8266ADS |
315 | CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR | 315 | CONFIG_SYS_PQ2FADS - PQ2FADS-ZU or PQ2FADS-VR |
316 | CONFIG_SYS_8272ADS - MPC8272ADS | 316 | CONFIG_SYS_8272ADS - MPC8272ADS |
317 | 317 | ||
318 | - Marvell Family Member | 318 | - Marvell Family Member |
319 | CONFIG_SYS_MVFS - define it if you want to enable | 319 | CONFIG_SYS_MVFS - define it if you want to enable |
320 | multiple fs option at one time | 320 | multiple fs option at one time |
321 | for marvell soc family | 321 | for marvell soc family |
322 | 322 | ||
323 | - MPC824X Family Member (if CONFIG_MPC824X is defined) | 323 | - MPC824X Family Member (if CONFIG_MPC824X is defined) |
324 | Define exactly one of | 324 | Define exactly one of |
325 | CONFIG_MPC8240, CONFIG_MPC8245 | 325 | CONFIG_MPC8240, CONFIG_MPC8245 |
326 | 326 | ||
327 | - 8xx CPU Options: (if using an MPC8xx CPU) | 327 | - 8xx CPU Options: (if using an MPC8xx CPU) |
328 | CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if | 328 | CONFIG_8xx_GCLK_FREQ - deprecated: CPU clock if |
329 | get_gclk_freq() cannot work | 329 | get_gclk_freq() cannot work |
330 | e.g. if there is no 32KHz | 330 | e.g. if there is no 32KHz |
331 | reference PIT/RTC clock | 331 | reference PIT/RTC clock |
332 | CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK | 332 | CONFIG_8xx_OSCLK - PLL input clock (either EXTCLK |
333 | or XTAL/EXTAL) | 333 | or XTAL/EXTAL) |
334 | 334 | ||
335 | - 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): | 335 | - 859/866/885 CPU options: (if using a MPC859 or MPC866 or MPC885 CPU): |
336 | CONFIG_SYS_8xx_CPUCLK_MIN | 336 | CONFIG_SYS_8xx_CPUCLK_MIN |
337 | CONFIG_SYS_8xx_CPUCLK_MAX | 337 | CONFIG_SYS_8xx_CPUCLK_MAX |
338 | CONFIG_8xx_CPUCLK_DEFAULT | 338 | CONFIG_8xx_CPUCLK_DEFAULT |
339 | See doc/README.MPC866 | 339 | See doc/README.MPC866 |
340 | 340 | ||
341 | CONFIG_SYS_MEASURE_CPUCLK | 341 | CONFIG_SYS_MEASURE_CPUCLK |
342 | 342 | ||
343 | Define this to measure the actual CPU clock instead | 343 | Define this to measure the actual CPU clock instead |
344 | of relying on the correctness of the configured | 344 | of relying on the correctness of the configured |
345 | values. Mostly useful for board bringup to make sure | 345 | values. Mostly useful for board bringup to make sure |
346 | the PLL is locked at the intended frequency. Note | 346 | the PLL is locked at the intended frequency. Note |
347 | that this requires a (stable) reference clock (32 kHz | 347 | that this requires a (stable) reference clock (32 kHz |
348 | RTC clock or CONFIG_SYS_8XX_XIN) | 348 | RTC clock or CONFIG_SYS_8XX_XIN) |
349 | 349 | ||
350 | CONFIG_SYS_DELAYED_ICACHE | 350 | CONFIG_SYS_DELAYED_ICACHE |
351 | 351 | ||
352 | Define this option if you want to enable the | 352 | Define this option if you want to enable the |
353 | ICache only when Code runs from RAM. | 353 | ICache only when Code runs from RAM. |
354 | 354 | ||
355 | - 85xx CPU Options: | 355 | - 85xx CPU Options: |
356 | CONFIG_SYS_PPC64 | 356 | CONFIG_SYS_PPC64 |
357 | 357 | ||
358 | Specifies that the core is a 64-bit PowerPC implementation (implements | 358 | Specifies that the core is a 64-bit PowerPC implementation (implements |
359 | the "64" category of the Power ISA). This is necessary for ePAPR | 359 | the "64" category of the Power ISA). This is necessary for ePAPR |
360 | compliance, among other possible reasons. | 360 | compliance, among other possible reasons. |
361 | 361 | ||
362 | CONFIG_SYS_FSL_TBCLK_DIV | 362 | CONFIG_SYS_FSL_TBCLK_DIV |
363 | 363 | ||
364 | Defines the core time base clock divider ratio compared to the | 364 | Defines the core time base clock divider ratio compared to the |
365 | system clock. On most PQ3 devices this is 8, on newer QorIQ | 365 | system clock. On most PQ3 devices this is 8, on newer QorIQ |
366 | devices it can be 16 or 32. The ratio varies from SoC to Soc. | 366 | devices it can be 16 or 32. The ratio varies from SoC to Soc. |
367 | 367 | ||
368 | CONFIG_SYS_FSL_PCIE_COMPAT | 368 | CONFIG_SYS_FSL_PCIE_COMPAT |
369 | 369 | ||
370 | Defines the string to utilize when trying to match PCIe device | 370 | Defines the string to utilize when trying to match PCIe device |
371 | tree nodes for the given platform. | 371 | tree nodes for the given platform. |
372 | 372 | ||
373 | CONFIG_SYS_PPC_E500_DEBUG_TLB | 373 | CONFIG_SYS_PPC_E500_DEBUG_TLB |
374 | 374 | ||
375 | Enables a temporary TLB entry to be used during boot to work | 375 | Enables a temporary TLB entry to be used during boot to work |
376 | around limitations in e500v1 and e500v2 external debugger | 376 | around limitations in e500v1 and e500v2 external debugger |
377 | support. This reduces the portions of the boot code where | 377 | support. This reduces the portions of the boot code where |
378 | breakpoints and single stepping do not work. The value of this | 378 | breakpoints and single stepping do not work. The value of this |
379 | symbol should be set to the TLB1 entry to be used for this | 379 | symbol should be set to the TLB1 entry to be used for this |
380 | purpose. | 380 | purpose. |
381 | 381 | ||
382 | CONFIG_SYS_FSL_ERRATUM_A004510 | 382 | CONFIG_SYS_FSL_ERRATUM_A004510 |
383 | 383 | ||
384 | Enables a workaround for erratum A004510. If set, | 384 | Enables a workaround for erratum A004510. If set, |
385 | then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and | 385 | then CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV and |
386 | CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. | 386 | CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY must be set. |
387 | 387 | ||
388 | CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV | 388 | CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV |
389 | CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) | 389 | CONFIG_SYS_FSL_ERRATUM_A004510_SVR_REV2 (optional) |
390 | 390 | ||
391 | Defines one or two SoC revisions (low 8 bits of SVR) | 391 | Defines one or two SoC revisions (low 8 bits of SVR) |
392 | for which the A004510 workaround should be applied. | 392 | for which the A004510 workaround should be applied. |
393 | 393 | ||
394 | The rest of SVR is either not relevant to the decision | 394 | The rest of SVR is either not relevant to the decision |
395 | of whether the erratum is present (e.g. p2040 versus | 395 | of whether the erratum is present (e.g. p2040 versus |
396 | p2041) or is implied by the build target, which controls | 396 | p2041) or is implied by the build target, which controls |
397 | whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. | 397 | whether CONFIG_SYS_FSL_ERRATUM_A004510 is set. |
398 | 398 | ||
399 | See Freescale App Note 4493 for more information about | 399 | See Freescale App Note 4493 for more information about |
400 | this erratum. | 400 | this erratum. |
401 | 401 | ||
402 | CONFIG_A003399_NOR_WORKAROUND | 402 | CONFIG_A003399_NOR_WORKAROUND |
403 | Enables a workaround for IFC erratum A003399. It is only | 403 | Enables a workaround for IFC erratum A003399. It is only |
404 | requred during NOR boot. | 404 | requred during NOR boot. |
405 | 405 | ||
406 | CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY | 406 | CONFIG_SYS_FSL_CORENET_SNOOPVEC_COREONLY |
407 | 407 | ||
408 | This is the value to write into CCSR offset 0x18600 | 408 | This is the value to write into CCSR offset 0x18600 |
409 | according to the A004510 workaround. | 409 | according to the A004510 workaround. |
410 | 410 | ||
411 | CONFIG_SYS_FSL_DSP_DDR_ADDR | 411 | CONFIG_SYS_FSL_DSP_DDR_ADDR |
412 | This value denotes start offset of DDR memory which is | 412 | This value denotes start offset of DDR memory which is |
413 | connected exclusively to the DSP cores. | 413 | connected exclusively to the DSP cores. |
414 | 414 | ||
415 | CONFIG_SYS_FSL_DSP_M2_RAM_ADDR | 415 | CONFIG_SYS_FSL_DSP_M2_RAM_ADDR |
416 | This value denotes start offset of M2 memory | 416 | This value denotes start offset of M2 memory |
417 | which is directly connected to the DSP core. | 417 | which is directly connected to the DSP core. |
418 | 418 | ||
419 | CONFIG_SYS_FSL_DSP_M3_RAM_ADDR | 419 | CONFIG_SYS_FSL_DSP_M3_RAM_ADDR |
420 | This value denotes start offset of M3 memory which is directly | 420 | This value denotes start offset of M3 memory which is directly |
421 | connected to the DSP core. | 421 | connected to the DSP core. |
422 | 422 | ||
423 | CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT | 423 | CONFIG_SYS_FSL_DSP_CCSRBAR_DEFAULT |
424 | This value denotes start offset of DSP CCSR space. | 424 | This value denotes start offset of DSP CCSR space. |
425 | 425 | ||
426 | - Generic CPU options: | 426 | - Generic CPU options: |
427 | CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN | 427 | CONFIG_SYS_BIG_ENDIAN, CONFIG_SYS_LITTLE_ENDIAN |
428 | 428 | ||
429 | Defines the endianess of the CPU. Implementation of those | 429 | Defines the endianess of the CPU. Implementation of those |
430 | values is arch specific. | 430 | values is arch specific. |
431 | 431 | ||
432 | CONFIG_SYS_FSL_DDR | 432 | CONFIG_SYS_FSL_DDR |
433 | Freescale DDR driver in use. This type of DDR controller is | 433 | Freescale DDR driver in use. This type of DDR controller is |
434 | found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core | 434 | found in mpc83xx, mpc85xx, mpc86xx as well as some ARM core |
435 | SoCs. | 435 | SoCs. |
436 | 436 | ||
437 | CONFIG_SYS_FSL_DDR_ADDR | 437 | CONFIG_SYS_FSL_DDR_ADDR |
438 | Freescale DDR memory-mapped register base. | 438 | Freescale DDR memory-mapped register base. |
439 | 439 | ||
440 | CONFIG_SYS_FSL_DDR_EMU | 440 | CONFIG_SYS_FSL_DDR_EMU |
441 | Specify emulator support for DDR. Some DDR features such as | 441 | Specify emulator support for DDR. Some DDR features such as |
442 | deskew training are not available. | 442 | deskew training are not available. |
443 | 443 | ||
444 | CONFIG_SYS_FSL_DDRC_GEN1 | 444 | CONFIG_SYS_FSL_DDRC_GEN1 |
445 | Freescale DDR1 controller. | 445 | Freescale DDR1 controller. |
446 | 446 | ||
447 | CONFIG_SYS_FSL_DDRC_GEN2 | 447 | CONFIG_SYS_FSL_DDRC_GEN2 |
448 | Freescale DDR2 controller. | 448 | Freescale DDR2 controller. |
449 | 449 | ||
450 | CONFIG_SYS_FSL_DDRC_GEN3 | 450 | CONFIG_SYS_FSL_DDRC_GEN3 |
451 | Freescale DDR3 controller. | 451 | Freescale DDR3 controller. |
452 | 452 | ||
453 | CONFIG_SYS_FSL_DDRC_ARM_GEN3 | 453 | CONFIG_SYS_FSL_DDRC_ARM_GEN3 |
454 | Freescale DDR3 controller for ARM-based SoCs. | 454 | Freescale DDR3 controller for ARM-based SoCs. |
455 | 455 | ||
456 | CONFIG_SYS_FSL_DDR1 | 456 | CONFIG_SYS_FSL_DDR1 |
457 | Board config to use DDR1. It can be enabled for SoCs with | 457 | Board config to use DDR1. It can be enabled for SoCs with |
458 | Freescale DDR1 or DDR2 controllers, depending on the board | 458 | Freescale DDR1 or DDR2 controllers, depending on the board |
459 | implemetation. | 459 | implemetation. |
460 | 460 | ||
461 | CONFIG_SYS_FSL_DDR2 | 461 | CONFIG_SYS_FSL_DDR2 |
462 | Board config to use DDR2. It can be eanbeld for SoCs with | 462 | Board config to use DDR2. It can be eanbeld for SoCs with |
463 | Freescale DDR2 or DDR3 controllers, depending on the board | 463 | Freescale DDR2 or DDR3 controllers, depending on the board |
464 | implementation. | 464 | implementation. |
465 | 465 | ||
466 | CONFIG_SYS_FSL_DDR3 | 466 | CONFIG_SYS_FSL_DDR3 |
467 | Board config to use DDR3. It can be enabled for SoCs with | 467 | Board config to use DDR3. It can be enabled for SoCs with |
468 | Freescale DDR3 controllers. | 468 | Freescale DDR3 controllers. |
469 | 469 | ||
470 | - Intel Monahans options: | 470 | - Intel Monahans options: |
471 | CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO | 471 | CONFIG_SYS_MONAHANS_RUN_MODE_OSC_RATIO |
472 | 472 | ||
473 | Defines the Monahans run mode to oscillator | 473 | Defines the Monahans run mode to oscillator |
474 | ratio. Valid values are 8, 16, 24, 31. The core | 474 | ratio. Valid values are 8, 16, 24, 31. The core |
475 | frequency is this value multiplied by 13 MHz. | 475 | frequency is this value multiplied by 13 MHz. |
476 | 476 | ||
477 | CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO | 477 | CONFIG_SYS_MONAHANS_TURBO_RUN_MODE_RATIO |
478 | 478 | ||
479 | Defines the Monahans turbo mode to oscillator | 479 | Defines the Monahans turbo mode to oscillator |
480 | ratio. Valid values are 1 (default if undefined) and | 480 | ratio. Valid values are 1 (default if undefined) and |
481 | 2. The core frequency as calculated above is multiplied | 481 | 2. The core frequency as calculated above is multiplied |
482 | by this value. | 482 | by this value. |
483 | 483 | ||
484 | - MIPS CPU options: | 484 | - MIPS CPU options: |
485 | CONFIG_SYS_INIT_SP_OFFSET | 485 | CONFIG_SYS_INIT_SP_OFFSET |
486 | 486 | ||
487 | Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack | 487 | Offset relative to CONFIG_SYS_SDRAM_BASE for initial stack |
488 | pointer. This is needed for the temporary stack before | 488 | pointer. This is needed for the temporary stack before |
489 | relocation. | 489 | relocation. |
490 | 490 | ||
491 | CONFIG_SYS_MIPS_CACHE_MODE | 491 | CONFIG_SYS_MIPS_CACHE_MODE |
492 | 492 | ||
493 | Cache operation mode for the MIPS CPU. | 493 | Cache operation mode for the MIPS CPU. |
494 | See also arch/mips/include/asm/mipsregs.h. | 494 | See also arch/mips/include/asm/mipsregs.h. |
495 | Possible values are: | 495 | Possible values are: |
496 | CONF_CM_CACHABLE_NO_WA | 496 | CONF_CM_CACHABLE_NO_WA |
497 | CONF_CM_CACHABLE_WA | 497 | CONF_CM_CACHABLE_WA |
498 | CONF_CM_UNCACHED | 498 | CONF_CM_UNCACHED |
499 | CONF_CM_CACHABLE_NONCOHERENT | 499 | CONF_CM_CACHABLE_NONCOHERENT |
500 | CONF_CM_CACHABLE_CE | 500 | CONF_CM_CACHABLE_CE |
501 | CONF_CM_CACHABLE_COW | 501 | CONF_CM_CACHABLE_COW |
502 | CONF_CM_CACHABLE_CUW | 502 | CONF_CM_CACHABLE_CUW |
503 | CONF_CM_CACHABLE_ACCELERATED | 503 | CONF_CM_CACHABLE_ACCELERATED |
504 | 504 | ||
505 | CONFIG_SYS_XWAY_EBU_BOOTCFG | 505 | CONFIG_SYS_XWAY_EBU_BOOTCFG |
506 | 506 | ||
507 | Special option for Lantiq XWAY SoCs for booting from NOR flash. | 507 | Special option for Lantiq XWAY SoCs for booting from NOR flash. |
508 | See also arch/mips/cpu/mips32/start.S. | 508 | See also arch/mips/cpu/mips32/start.S. |
509 | 509 | ||
510 | CONFIG_XWAY_SWAP_BYTES | 510 | CONFIG_XWAY_SWAP_BYTES |
511 | 511 | ||
512 | Enable compilation of tools/xway-swap-bytes needed for Lantiq | 512 | Enable compilation of tools/xway-swap-bytes needed for Lantiq |
513 | XWAY SoCs for booting from NOR flash. The U-Boot image needs to | 513 | XWAY SoCs for booting from NOR flash. The U-Boot image needs to |
514 | be swapped if a flash programmer is used. | 514 | be swapped if a flash programmer is used. |
515 | 515 | ||
516 | - ARM options: | 516 | - ARM options: |
517 | CONFIG_SYS_EXCEPTION_VECTORS_HIGH | 517 | CONFIG_SYS_EXCEPTION_VECTORS_HIGH |
518 | 518 | ||
519 | Select high exception vectors of the ARM core, e.g., do not | 519 | Select high exception vectors of the ARM core, e.g., do not |
520 | clear the V bit of the c1 register of CP15. | 520 | clear the V bit of the c1 register of CP15. |
521 | 521 | ||
522 | CONFIG_SYS_THUMB_BUILD | 522 | CONFIG_SYS_THUMB_BUILD |
523 | 523 | ||
524 | Use this flag to build U-Boot using the Thumb instruction | 524 | Use this flag to build U-Boot using the Thumb instruction |
525 | set for ARM architectures. Thumb instruction set provides | 525 | set for ARM architectures. Thumb instruction set provides |
526 | better code density. For ARM architectures that support | 526 | better code density. For ARM architectures that support |
527 | Thumb2 this flag will result in Thumb2 code generated by | 527 | Thumb2 this flag will result in Thumb2 code generated by |
528 | GCC. | 528 | GCC. |
529 | 529 | ||
530 | CONFIG_ARM_ERRATA_716044 | 530 | CONFIG_ARM_ERRATA_716044 |
531 | CONFIG_ARM_ERRATA_742230 | 531 | CONFIG_ARM_ERRATA_742230 |
532 | CONFIG_ARM_ERRATA_743622 | 532 | CONFIG_ARM_ERRATA_743622 |
533 | CONFIG_ARM_ERRATA_751472 | 533 | CONFIG_ARM_ERRATA_751472 |
534 | 534 | ||
535 | If set, the workarounds for these ARM errata are applied early | 535 | If set, the workarounds for these ARM errata are applied early |
536 | during U-Boot startup. Note that these options force the | 536 | during U-Boot startup. Note that these options force the |
537 | workarounds to be applied; no CPU-type/version detection | 537 | workarounds to be applied; no CPU-type/version detection |
538 | exists, unlike the similar options in the Linux kernel. Do not | 538 | exists, unlike the similar options in the Linux kernel. Do not |
539 | set these options unless they apply! | 539 | set these options unless they apply! |
540 | 540 | ||
541 | - CPU timer options: | 541 | - CPU timer options: |
542 | CONFIG_SYS_HZ | 542 | CONFIG_SYS_HZ |
543 | 543 | ||
544 | The frequency of the timer returned by get_timer(). | 544 | The frequency of the timer returned by get_timer(). |
545 | get_timer() must operate in milliseconds and this CONFIG | 545 | get_timer() must operate in milliseconds and this CONFIG |
546 | option must be set to 1000. | 546 | option must be set to 1000. |
547 | 547 | ||
548 | - Linux Kernel Interface: | 548 | - Linux Kernel Interface: |
549 | CONFIG_CLOCKS_IN_MHZ | 549 | CONFIG_CLOCKS_IN_MHZ |
550 | 550 | ||
551 | U-Boot stores all clock information in Hz | 551 | U-Boot stores all clock information in Hz |
552 | internally. For binary compatibility with older Linux | 552 | internally. For binary compatibility with older Linux |
553 | kernels (which expect the clocks passed in the | 553 | kernels (which expect the clocks passed in the |
554 | bd_info data to be in MHz) the environment variable | 554 | bd_info data to be in MHz) the environment variable |
555 | "clocks_in_mhz" can be defined so that U-Boot | 555 | "clocks_in_mhz" can be defined so that U-Boot |
556 | converts clock data to MHZ before passing it to the | 556 | converts clock data to MHZ before passing it to the |
557 | Linux kernel. | 557 | Linux kernel. |
558 | When CONFIG_CLOCKS_IN_MHZ is defined, a definition of | 558 | When CONFIG_CLOCKS_IN_MHZ is defined, a definition of |
559 | "clocks_in_mhz=1" is automatically included in the | 559 | "clocks_in_mhz=1" is automatically included in the |
560 | default environment. | 560 | default environment. |
561 | 561 | ||
562 | CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] | 562 | CONFIG_MEMSIZE_IN_BYTES [relevant for MIPS only] |
563 | 563 | ||
564 | When transferring memsize parameter to linux, some versions | 564 | When transferring memsize parameter to linux, some versions |
565 | expect it to be in bytes, others in MB. | 565 | expect it to be in bytes, others in MB. |
566 | Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. | 566 | Define CONFIG_MEMSIZE_IN_BYTES to make it in bytes. |
567 | 567 | ||
568 | CONFIG_OF_LIBFDT | 568 | CONFIG_OF_LIBFDT |
569 | 569 | ||
570 | New kernel versions are expecting firmware settings to be | 570 | New kernel versions are expecting firmware settings to be |
571 | passed using flattened device trees (based on open firmware | 571 | passed using flattened device trees (based on open firmware |
572 | concepts). | 572 | concepts). |
573 | 573 | ||
574 | CONFIG_OF_LIBFDT | 574 | CONFIG_OF_LIBFDT |
575 | * New libfdt-based support | 575 | * New libfdt-based support |
576 | * Adds the "fdt" command | 576 | * Adds the "fdt" command |
577 | * The bootm command automatically updates the fdt | 577 | * The bootm command automatically updates the fdt |
578 | 578 | ||
579 | OF_CPU - The proper name of the cpus node (only required for | 579 | OF_CPU - The proper name of the cpus node (only required for |
580 | MPC512X and MPC5xxx based boards). | 580 | MPC512X and MPC5xxx based boards). |
581 | OF_SOC - The proper name of the soc node (only required for | 581 | OF_SOC - The proper name of the soc node (only required for |
582 | MPC512X and MPC5xxx based boards). | 582 | MPC512X and MPC5xxx based boards). |
583 | OF_TBCLK - The timebase frequency. | 583 | OF_TBCLK - The timebase frequency. |
584 | OF_STDOUT_PATH - The path to the console device | 584 | OF_STDOUT_PATH - The path to the console device |
585 | 585 | ||
586 | boards with QUICC Engines require OF_QE to set UCC MAC | 586 | boards with QUICC Engines require OF_QE to set UCC MAC |
587 | addresses | 587 | addresses |
588 | 588 | ||
589 | CONFIG_OF_BOARD_SETUP | 589 | CONFIG_OF_BOARD_SETUP |
590 | 590 | ||
591 | Board code has addition modification that it wants to make | 591 | Board code has addition modification that it wants to make |
592 | to the flat device tree before handing it off to the kernel | 592 | to the flat device tree before handing it off to the kernel |
593 | 593 | ||
594 | CONFIG_OF_BOOT_CPU | 594 | CONFIG_OF_BOOT_CPU |
595 | 595 | ||
596 | This define fills in the correct boot CPU in the boot | 596 | This define fills in the correct boot CPU in the boot |
597 | param header, the default value is zero if undefined. | 597 | param header, the default value is zero if undefined. |
598 | 598 | ||
599 | CONFIG_OF_IDE_FIXUP | 599 | CONFIG_OF_IDE_FIXUP |
600 | 600 | ||
601 | U-Boot can detect if an IDE device is present or not. | 601 | U-Boot can detect if an IDE device is present or not. |
602 | If not, and this new config option is activated, U-Boot | 602 | If not, and this new config option is activated, U-Boot |
603 | removes the ATA node from the DTS before booting Linux, | 603 | removes the ATA node from the DTS before booting Linux, |
604 | so the Linux IDE driver does not probe the device and | 604 | so the Linux IDE driver does not probe the device and |
605 | crash. This is needed for buggy hardware (uc101) where | 605 | crash. This is needed for buggy hardware (uc101) where |
606 | no pull down resistor is connected to the signal IDE5V_DD7. | 606 | no pull down resistor is connected to the signal IDE5V_DD7. |
607 | 607 | ||
608 | CONFIG_MACH_TYPE [relevant for ARM only][mandatory] | 608 | CONFIG_MACH_TYPE [relevant for ARM only][mandatory] |
609 | 609 | ||
610 | This setting is mandatory for all boards that have only one | 610 | This setting is mandatory for all boards that have only one |
611 | machine type and must be used to specify the machine type | 611 | machine type and must be used to specify the machine type |
612 | number as it appears in the ARM machine registry | 612 | number as it appears in the ARM machine registry |
613 | (see http://www.arm.linux.org.uk/developer/machines/). | 613 | (see http://www.arm.linux.org.uk/developer/machines/). |
614 | Only boards that have multiple machine types supported | 614 | Only boards that have multiple machine types supported |
615 | in a single configuration file and the machine type is | 615 | in a single configuration file and the machine type is |
616 | runtime discoverable, do not have to use this setting. | 616 | runtime discoverable, do not have to use this setting. |
617 | 617 | ||
618 | - vxWorks boot parameters: | 618 | - vxWorks boot parameters: |
619 | 619 | ||
620 | bootvx constructs a valid bootline using the following | 620 | bootvx constructs a valid bootline using the following |
621 | environments variables: bootfile, ipaddr, serverip, hostname. | 621 | environments variables: bootfile, ipaddr, serverip, hostname. |
622 | It loads the vxWorks image pointed bootfile. | 622 | It loads the vxWorks image pointed bootfile. |
623 | 623 | ||
624 | CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name | 624 | CONFIG_SYS_VXWORKS_BOOT_DEVICE - The vxworks device name |
625 | CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address | 625 | CONFIG_SYS_VXWORKS_MAC_PTR - Ethernet 6 byte MA -address |
626 | CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server | 626 | CONFIG_SYS_VXWORKS_SERVERNAME - Name of the server |
627 | CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters | 627 | CONFIG_SYS_VXWORKS_BOOT_ADDR - Address of boot parameters |
628 | 628 | ||
629 | CONFIG_SYS_VXWORKS_ADD_PARAMS | 629 | CONFIG_SYS_VXWORKS_ADD_PARAMS |
630 | 630 | ||
631 | Add it at the end of the bootline. E.g "u=username pw=secret" | 631 | Add it at the end of the bootline. E.g "u=username pw=secret" |
632 | 632 | ||
633 | Note: If a "bootargs" environment is defined, it will overwride | 633 | Note: If a "bootargs" environment is defined, it will overwride |
634 | the defaults discussed just above. | 634 | the defaults discussed just above. |
635 | 635 | ||
636 | - Cache Configuration: | 636 | - Cache Configuration: |
637 | CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot | 637 | CONFIG_SYS_ICACHE_OFF - Do not enable instruction cache in U-Boot |
638 | CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot | 638 | CONFIG_SYS_DCACHE_OFF - Do not enable data cache in U-Boot |
639 | CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot | 639 | CONFIG_SYS_L2CACHE_OFF- Do not enable L2 cache in U-Boot |
640 | 640 | ||
641 | - Cache Configuration for ARM: | 641 | - Cache Configuration for ARM: |
642 | CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache | 642 | CONFIG_SYS_L2_PL310 - Enable support for ARM PL310 L2 cache |
643 | controller | 643 | controller |
644 | CONFIG_SYS_PL310_BASE - Physical base address of PL310 | 644 | CONFIG_SYS_PL310_BASE - Physical base address of PL310 |
645 | controller register space | 645 | controller register space |
646 | 646 | ||
647 | - Serial Ports: | 647 | - Serial Ports: |
648 | CONFIG_PL010_SERIAL | 648 | CONFIG_PL010_SERIAL |
649 | 649 | ||
650 | Define this if you want support for Amba PrimeCell PL010 UARTs. | 650 | Define this if you want support for Amba PrimeCell PL010 UARTs. |
651 | 651 | ||
652 | CONFIG_PL011_SERIAL | 652 | CONFIG_PL011_SERIAL |
653 | 653 | ||
654 | Define this if you want support for Amba PrimeCell PL011 UARTs. | 654 | Define this if you want support for Amba PrimeCell PL011 UARTs. |
655 | 655 | ||
656 | CONFIG_PL011_CLOCK | 656 | CONFIG_PL011_CLOCK |
657 | 657 | ||
658 | If you have Amba PrimeCell PL011 UARTs, set this variable to | 658 | If you have Amba PrimeCell PL011 UARTs, set this variable to |
659 | the clock speed of the UARTs. | 659 | the clock speed of the UARTs. |
660 | 660 | ||
661 | CONFIG_PL01x_PORTS | 661 | CONFIG_PL01x_PORTS |
662 | 662 | ||
663 | If you have Amba PrimeCell PL010 or PL011 UARTs on your board, | 663 | If you have Amba PrimeCell PL010 or PL011 UARTs on your board, |
664 | define this to a list of base addresses for each (supported) | 664 | define this to a list of base addresses for each (supported) |
665 | port. See e.g. include/configs/versatile.h | 665 | port. See e.g. include/configs/versatile.h |
666 | 666 | ||
667 | CONFIG_PL011_SERIAL_RLCR | 667 | CONFIG_PL011_SERIAL_RLCR |
668 | 668 | ||
669 | Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) | 669 | Some vendor versions of PL011 serial ports (e.g. ST-Ericsson U8500) |
670 | have separate receive and transmit line control registers. Set | 670 | have separate receive and transmit line control registers. Set |
671 | this variable to initialize the extra register. | 671 | this variable to initialize the extra register. |
672 | 672 | ||
673 | CONFIG_PL011_SERIAL_FLUSH_ON_INIT | 673 | CONFIG_PL011_SERIAL_FLUSH_ON_INIT |
674 | 674 | ||
675 | On some platforms (e.g. U8500) U-Boot is loaded by a second stage | 675 | On some platforms (e.g. U8500) U-Boot is loaded by a second stage |
676 | boot loader that has already initialized the UART. Define this | 676 | boot loader that has already initialized the UART. Define this |
677 | variable to flush the UART at init time. | 677 | variable to flush the UART at init time. |
678 | 678 | ||
679 | 679 | ||
680 | - Console Interface: | 680 | - Console Interface: |
681 | Depending on board, define exactly one serial port | 681 | Depending on board, define exactly one serial port |
682 | (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, | 682 | (like CONFIG_8xx_CONS_SMC1, CONFIG_8xx_CONS_SMC2, |
683 | CONFIG_8xx_CONS_SCC1, ...), or switch off the serial | 683 | CONFIG_8xx_CONS_SCC1, ...), or switch off the serial |
684 | console by defining CONFIG_8xx_CONS_NONE | 684 | console by defining CONFIG_8xx_CONS_NONE |
685 | 685 | ||
686 | Note: if CONFIG_8xx_CONS_NONE is defined, the serial | 686 | Note: if CONFIG_8xx_CONS_NONE is defined, the serial |
687 | port routines must be defined elsewhere | 687 | port routines must be defined elsewhere |
688 | (i.e. serial_init(), serial_getc(), ...) | 688 | (i.e. serial_init(), serial_getc(), ...) |
689 | 689 | ||
690 | CONFIG_CFB_CONSOLE | 690 | CONFIG_CFB_CONSOLE |
691 | Enables console device for a color framebuffer. Needs following | 691 | Enables console device for a color framebuffer. Needs following |
692 | defines (cf. smiLynxEM, i8042) | 692 | defines (cf. smiLynxEM, i8042) |
693 | VIDEO_FB_LITTLE_ENDIAN graphic memory organisation | 693 | VIDEO_FB_LITTLE_ENDIAN graphic memory organisation |
694 | (default big endian) | 694 | (default big endian) |
695 | VIDEO_HW_RECTFILL graphic chip supports | 695 | VIDEO_HW_RECTFILL graphic chip supports |
696 | rectangle fill | 696 | rectangle fill |
697 | (cf. smiLynxEM) | 697 | (cf. smiLynxEM) |
698 | VIDEO_HW_BITBLT graphic chip supports | 698 | VIDEO_HW_BITBLT graphic chip supports |
699 | bit-blit (cf. smiLynxEM) | 699 | bit-blit (cf. smiLynxEM) |
700 | VIDEO_VISIBLE_COLS visible pixel columns | 700 | VIDEO_VISIBLE_COLS visible pixel columns |
701 | (cols=pitch) | 701 | (cols=pitch) |
702 | VIDEO_VISIBLE_ROWS visible pixel rows | 702 | VIDEO_VISIBLE_ROWS visible pixel rows |
703 | VIDEO_PIXEL_SIZE bytes per pixel | 703 | VIDEO_PIXEL_SIZE bytes per pixel |
704 | VIDEO_DATA_FORMAT graphic data format | 704 | VIDEO_DATA_FORMAT graphic data format |
705 | (0-5, cf. cfb_console.c) | 705 | (0-5, cf. cfb_console.c) |
706 | VIDEO_FB_ADRS framebuffer address | 706 | VIDEO_FB_ADRS framebuffer address |
707 | VIDEO_KBD_INIT_FCT keyboard int fct | 707 | VIDEO_KBD_INIT_FCT keyboard int fct |
708 | (i.e. i8042_kbd_init()) | 708 | (i.e. i8042_kbd_init()) |
709 | VIDEO_TSTC_FCT test char fct | 709 | VIDEO_TSTC_FCT test char fct |
710 | (i.e. i8042_tstc) | 710 | (i.e. i8042_tstc) |
711 | VIDEO_GETC_FCT get char fct | 711 | VIDEO_GETC_FCT get char fct |
712 | (i.e. i8042_getc) | 712 | (i.e. i8042_getc) |
713 | CONFIG_CONSOLE_CURSOR cursor drawing on/off | 713 | CONFIG_CONSOLE_CURSOR cursor drawing on/off |
714 | (requires blink timer | 714 | (requires blink timer |
715 | cf. i8042.c) | 715 | cf. i8042.c) |
716 | CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) | 716 | CONFIG_SYS_CONSOLE_BLINK_COUNT blink interval (cf. i8042.c) |
717 | CONFIG_CONSOLE_TIME display time/date info in | 717 | CONFIG_CONSOLE_TIME display time/date info in |
718 | upper right corner | 718 | upper right corner |
719 | (requires CONFIG_CMD_DATE) | 719 | (requires CONFIG_CMD_DATE) |
720 | CONFIG_VIDEO_LOGO display Linux logo in | 720 | CONFIG_VIDEO_LOGO display Linux logo in |
721 | upper left corner | 721 | upper left corner |
722 | CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of | 722 | CONFIG_VIDEO_BMP_LOGO use bmp_logo.h instead of |
723 | linux_logo.h for logo. | 723 | linux_logo.h for logo. |
724 | Requires CONFIG_VIDEO_LOGO | 724 | Requires CONFIG_VIDEO_LOGO |
725 | CONFIG_CONSOLE_EXTRA_INFO | 725 | CONFIG_CONSOLE_EXTRA_INFO |
726 | additional board info beside | 726 | additional board info beside |
727 | the logo | 727 | the logo |
728 | 728 | ||
729 | When CONFIG_CFB_CONSOLE_ANSI is defined, console will support | 729 | When CONFIG_CFB_CONSOLE_ANSI is defined, console will support |
730 | a limited number of ANSI escape sequences (cursor control, | 730 | a limited number of ANSI escape sequences (cursor control, |
731 | erase functions and limited graphics rendition control). | 731 | erase functions and limited graphics rendition control). |
732 | 732 | ||
733 | When CONFIG_CFB_CONSOLE is defined, video console is | 733 | When CONFIG_CFB_CONSOLE is defined, video console is |
734 | default i/o. Serial console can be forced with | 734 | default i/o. Serial console can be forced with |
735 | environment 'console=serial'. | 735 | environment 'console=serial'. |
736 | 736 | ||
737 | When CONFIG_SILENT_CONSOLE is defined, all console | 737 | When CONFIG_SILENT_CONSOLE is defined, all console |
738 | messages (by U-Boot and Linux!) can be silenced with | 738 | messages (by U-Boot and Linux!) can be silenced with |
739 | the "silent" environment variable. See | 739 | the "silent" environment variable. See |
740 | doc/README.silent for more information. | 740 | doc/README.silent for more information. |
741 | 741 | ||
742 | CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default | 742 | CONFIG_SYS_CONSOLE_BG_COL: define the backgroundcolor, default |
743 | is 0x00. | 743 | is 0x00. |
744 | CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default | 744 | CONFIG_SYS_CONSOLE_FG_COL: define the foregroundcolor, default |
745 | is 0xa0. | 745 | is 0xa0. |
746 | 746 | ||
747 | - Console Baudrate: | 747 | - Console Baudrate: |
748 | CONFIG_BAUDRATE - in bps | 748 | CONFIG_BAUDRATE - in bps |
749 | Select one of the baudrates listed in | 749 | Select one of the baudrates listed in |
750 | CONFIG_SYS_BAUDRATE_TABLE, see below. | 750 | CONFIG_SYS_BAUDRATE_TABLE, see below. |
751 | CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale | 751 | CONFIG_SYS_BRGCLK_PRESCALE, baudrate prescale |
752 | 752 | ||
753 | - Console Rx buffer length | 753 | - Console Rx buffer length |
754 | With CONFIG_SYS_SMC_RXBUFLEN it is possible to define | 754 | With CONFIG_SYS_SMC_RXBUFLEN it is possible to define |
755 | the maximum receive buffer length for the SMC. | 755 | the maximum receive buffer length for the SMC. |
756 | This option is actual only for 82xx and 8xx possible. | 756 | This option is actual only for 82xx and 8xx possible. |
757 | If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE | 757 | If using CONFIG_SYS_SMC_RXBUFLEN also CONFIG_SYS_MAXIDLE |
758 | must be defined, to setup the maximum idle timeout for | 758 | must be defined, to setup the maximum idle timeout for |
759 | the SMC. | 759 | the SMC. |
760 | 760 | ||
761 | - Pre-Console Buffer: | 761 | - Pre-Console Buffer: |
762 | Prior to the console being initialised (i.e. serial UART | 762 | Prior to the console being initialised (i.e. serial UART |
763 | initialised etc) all console output is silently discarded. | 763 | initialised etc) all console output is silently discarded. |
764 | Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to | 764 | Defining CONFIG_PRE_CONSOLE_BUFFER will cause U-Boot to |
765 | buffer any console messages prior to the console being | 765 | buffer any console messages prior to the console being |
766 | initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ | 766 | initialised to a buffer of size CONFIG_PRE_CON_BUF_SZ |
767 | bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is | 767 | bytes located at CONFIG_PRE_CON_BUF_ADDR. The buffer is |
768 | a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ | 768 | a circular buffer, so if more than CONFIG_PRE_CON_BUF_SZ |
769 | bytes are output before the console is initialised, the | 769 | bytes are output before the console is initialised, the |
770 | earlier bytes are discarded. | 770 | earlier bytes are discarded. |
771 | 771 | ||
772 | 'Sane' compilers will generate smaller code if | 772 | 'Sane' compilers will generate smaller code if |
773 | CONFIG_PRE_CON_BUF_SZ is a power of 2 | 773 | CONFIG_PRE_CON_BUF_SZ is a power of 2 |
774 | 774 | ||
775 | - Safe printf() functions | 775 | - Safe printf() functions |
776 | Define CONFIG_SYS_VSNPRINTF to compile in safe versions of | 776 | Define CONFIG_SYS_VSNPRINTF to compile in safe versions of |
777 | the printf() functions. These are defined in | 777 | the printf() functions. These are defined in |
778 | include/vsprintf.h and include snprintf(), vsnprintf() and | 778 | include/vsprintf.h and include snprintf(), vsnprintf() and |
779 | so on. Code size increase is approximately 300-500 bytes. | 779 | so on. Code size increase is approximately 300-500 bytes. |
780 | If this option is not given then these functions will | 780 | If this option is not given then these functions will |
781 | silently discard their buffer size argument - this means | 781 | silently discard their buffer size argument - this means |
782 | you are not getting any overflow checking in this case. | 782 | you are not getting any overflow checking in this case. |
783 | 783 | ||
784 | - Boot Delay: CONFIG_BOOTDELAY - in seconds | 784 | - Boot Delay: CONFIG_BOOTDELAY - in seconds |
785 | Delay before automatically booting the default image; | 785 | Delay before automatically booting the default image; |
786 | set to -1 to disable autoboot. | 786 | set to -1 to disable autoboot. |
787 | set to -2 to autoboot with no delay and not check for abort | 787 | set to -2 to autoboot with no delay and not check for abort |
788 | (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). | 788 | (even when CONFIG_ZERO_BOOTDELAY_CHECK is defined). |
789 | 789 | ||
790 | See doc/README.autoboot for these options that | 790 | See doc/README.autoboot for these options that |
791 | work with CONFIG_BOOTDELAY. None are required. | 791 | work with CONFIG_BOOTDELAY. None are required. |
792 | CONFIG_BOOT_RETRY_TIME | 792 | CONFIG_BOOT_RETRY_TIME |
793 | CONFIG_BOOT_RETRY_MIN | 793 | CONFIG_BOOT_RETRY_MIN |
794 | CONFIG_AUTOBOOT_KEYED | 794 | CONFIG_AUTOBOOT_KEYED |
795 | CONFIG_AUTOBOOT_PROMPT | 795 | CONFIG_AUTOBOOT_PROMPT |
796 | CONFIG_AUTOBOOT_DELAY_STR | 796 | CONFIG_AUTOBOOT_DELAY_STR |
797 | CONFIG_AUTOBOOT_STOP_STR | 797 | CONFIG_AUTOBOOT_STOP_STR |
798 | CONFIG_AUTOBOOT_DELAY_STR2 | 798 | CONFIG_AUTOBOOT_DELAY_STR2 |
799 | CONFIG_AUTOBOOT_STOP_STR2 | 799 | CONFIG_AUTOBOOT_STOP_STR2 |
800 | CONFIG_ZERO_BOOTDELAY_CHECK | 800 | CONFIG_ZERO_BOOTDELAY_CHECK |
801 | CONFIG_RESET_TO_RETRY | 801 | CONFIG_RESET_TO_RETRY |
802 | 802 | ||
803 | - Autoboot Command: | 803 | - Autoboot Command: |
804 | CONFIG_BOOTCOMMAND | 804 | CONFIG_BOOTCOMMAND |
805 | Only needed when CONFIG_BOOTDELAY is enabled; | 805 | Only needed when CONFIG_BOOTDELAY is enabled; |
806 | define a command string that is automatically executed | 806 | define a command string that is automatically executed |
807 | when no character is read on the console interface | 807 | when no character is read on the console interface |
808 | within "Boot Delay" after reset. | 808 | within "Boot Delay" after reset. |
809 | 809 | ||
810 | CONFIG_BOOTARGS | 810 | CONFIG_BOOTARGS |
811 | This can be used to pass arguments to the bootm | 811 | This can be used to pass arguments to the bootm |
812 | command. The value of CONFIG_BOOTARGS goes into the | 812 | command. The value of CONFIG_BOOTARGS goes into the |
813 | environment value "bootargs". | 813 | environment value "bootargs". |
814 | 814 | ||
815 | CONFIG_RAMBOOT and CONFIG_NFSBOOT | 815 | CONFIG_RAMBOOT and CONFIG_NFSBOOT |
816 | The value of these goes into the environment as | 816 | The value of these goes into the environment as |
817 | "ramboot" and "nfsboot" respectively, and can be used | 817 | "ramboot" and "nfsboot" respectively, and can be used |
818 | as a convenience, when switching between booting from | 818 | as a convenience, when switching between booting from |
819 | RAM and NFS. | 819 | RAM and NFS. |
820 | 820 | ||
821 | - Pre-Boot Commands: | 821 | - Pre-Boot Commands: |
822 | CONFIG_PREBOOT | 822 | CONFIG_PREBOOT |
823 | 823 | ||
824 | When this option is #defined, the existence of the | 824 | When this option is #defined, the existence of the |
825 | environment variable "preboot" will be checked | 825 | environment variable "preboot" will be checked |
826 | immediately before starting the CONFIG_BOOTDELAY | 826 | immediately before starting the CONFIG_BOOTDELAY |
827 | countdown and/or running the auto-boot command resp. | 827 | countdown and/or running the auto-boot command resp. |
828 | entering interactive mode. | 828 | entering interactive mode. |
829 | 829 | ||
830 | This feature is especially useful when "preboot" is | 830 | This feature is especially useful when "preboot" is |
831 | automatically generated or modified. For an example | 831 | automatically generated or modified. For an example |
832 | see the LWMON board specific code: here "preboot" is | 832 | see the LWMON board specific code: here "preboot" is |
833 | modified when the user holds down a certain | 833 | modified when the user holds down a certain |
834 | combination of keys on the (special) keyboard when | 834 | combination of keys on the (special) keyboard when |
835 | booting the systems | 835 | booting the systems |
836 | 836 | ||
837 | - Serial Download Echo Mode: | 837 | - Serial Download Echo Mode: |
838 | CONFIG_LOADS_ECHO | 838 | CONFIG_LOADS_ECHO |
839 | If defined to 1, all characters received during a | 839 | If defined to 1, all characters received during a |
840 | serial download (using the "loads" command) are | 840 | serial download (using the "loads" command) are |
841 | echoed back. This might be needed by some terminal | 841 | echoed back. This might be needed by some terminal |
842 | emulations (like "cu"), but may as well just take | 842 | emulations (like "cu"), but may as well just take |
843 | time on others. This setting #define's the initial | 843 | time on others. This setting #define's the initial |
844 | value of the "loads_echo" environment variable. | 844 | value of the "loads_echo" environment variable. |
845 | 845 | ||
846 | - Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) | 846 | - Kgdb Serial Baudrate: (if CONFIG_CMD_KGDB is defined) |
847 | CONFIG_KGDB_BAUDRATE | 847 | CONFIG_KGDB_BAUDRATE |
848 | Select one of the baudrates listed in | 848 | Select one of the baudrates listed in |
849 | CONFIG_SYS_BAUDRATE_TABLE, see below. | 849 | CONFIG_SYS_BAUDRATE_TABLE, see below. |
850 | 850 | ||
851 | - Monitor Functions: | 851 | - Monitor Functions: |
852 | Monitor commands can be included or excluded | 852 | Monitor commands can be included or excluded |
853 | from the build by using the #include files | 853 | from the build by using the #include files |
854 | <config_cmd_all.h> and #undef'ing unwanted | 854 | <config_cmd_all.h> and #undef'ing unwanted |
855 | commands, or using <config_cmd_default.h> | 855 | commands, or using <config_cmd_default.h> |
856 | and augmenting with additional #define's | 856 | and augmenting with additional #define's |
857 | for wanted commands. | 857 | for wanted commands. |
858 | 858 | ||
859 | The default command configuration includes all commands | 859 | The default command configuration includes all commands |
860 | except those marked below with a "*". | 860 | except those marked below with a "*". |
861 | 861 | ||
862 | CONFIG_CMD_ASKENV * ask for env variable | 862 | CONFIG_CMD_ASKENV * ask for env variable |
863 | CONFIG_CMD_BDI bdinfo | 863 | CONFIG_CMD_BDI bdinfo |
864 | CONFIG_CMD_BEDBUG * Include BedBug Debugger | 864 | CONFIG_CMD_BEDBUG * Include BedBug Debugger |
865 | CONFIG_CMD_BMP * BMP support | 865 | CONFIG_CMD_BMP * BMP support |
866 | CONFIG_CMD_BSP * Board specific commands | 866 | CONFIG_CMD_BSP * Board specific commands |
867 | CONFIG_CMD_BOOTD bootd | 867 | CONFIG_CMD_BOOTD bootd |
868 | CONFIG_CMD_CACHE * icache, dcache | 868 | CONFIG_CMD_CACHE * icache, dcache |
869 | CONFIG_CMD_CONSOLE coninfo | 869 | CONFIG_CMD_CONSOLE coninfo |
870 | CONFIG_CMD_CRC32 * crc32 | 870 | CONFIG_CMD_CRC32 * crc32 |
871 | CONFIG_CMD_DATE * support for RTC, date/time... | 871 | CONFIG_CMD_DATE * support for RTC, date/time... |
872 | CONFIG_CMD_DHCP * DHCP support | 872 | CONFIG_CMD_DHCP * DHCP support |
873 | CONFIG_CMD_DIAG * Diagnostics | 873 | CONFIG_CMD_DIAG * Diagnostics |
874 | CONFIG_CMD_DS4510 * ds4510 I2C gpio commands | 874 | CONFIG_CMD_DS4510 * ds4510 I2C gpio commands |
875 | CONFIG_CMD_DS4510_INFO * ds4510 I2C info command | 875 | CONFIG_CMD_DS4510_INFO * ds4510 I2C info command |
876 | CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd | 876 | CONFIG_CMD_DS4510_MEM * ds4510 I2C eeprom/sram commansd |
877 | CONFIG_CMD_DS4510_RST * ds4510 I2C rst command | 877 | CONFIG_CMD_DS4510_RST * ds4510 I2C rst command |
878 | CONFIG_CMD_DTT * Digital Therm and Thermostat | 878 | CONFIG_CMD_DTT * Digital Therm and Thermostat |
879 | CONFIG_CMD_ECHO echo arguments | 879 | CONFIG_CMD_ECHO echo arguments |
880 | CONFIG_CMD_EDITENV edit env variable | 880 | CONFIG_CMD_EDITENV edit env variable |
881 | CONFIG_CMD_EEPROM * EEPROM read/write support | 881 | CONFIG_CMD_EEPROM * EEPROM read/write support |
882 | CONFIG_CMD_ELF * bootelf, bootvx | 882 | CONFIG_CMD_ELF * bootelf, bootvx |
883 | CONFIG_CMD_ENV_CALLBACK * display details about env callbacks | 883 | CONFIG_CMD_ENV_CALLBACK * display details about env callbacks |
884 | CONFIG_CMD_ENV_FLAGS * display details about env flags | 884 | CONFIG_CMD_ENV_FLAGS * display details about env flags |
885 | CONFIG_CMD_ENV_EXISTS * check existence of env variable | 885 | CONFIG_CMD_ENV_EXISTS * check existence of env variable |
886 | CONFIG_CMD_EXPORTENV * export the environment | 886 | CONFIG_CMD_EXPORTENV * export the environment |
887 | CONFIG_CMD_EXT2 * ext2 command support | 887 | CONFIG_CMD_EXT2 * ext2 command support |
888 | CONFIG_CMD_EXT4 * ext4 command support | 888 | CONFIG_CMD_EXT4 * ext4 command support |
889 | CONFIG_CMD_SAVEENV saveenv | 889 | CONFIG_CMD_SAVEENV saveenv |
890 | CONFIG_CMD_FDC * Floppy Disk Support | 890 | CONFIG_CMD_FDC * Floppy Disk Support |
891 | CONFIG_CMD_FAT * FAT command support | 891 | CONFIG_CMD_FAT * FAT command support |
892 | CONFIG_CMD_FDOS * Dos diskette Support | 892 | CONFIG_CMD_FDOS * Dos diskette Support |
893 | CONFIG_CMD_FLASH flinfo, erase, protect | 893 | CONFIG_CMD_FLASH flinfo, erase, protect |
894 | CONFIG_CMD_FPGA FPGA device initialization support | 894 | CONFIG_CMD_FPGA FPGA device initialization support |
895 | CONFIG_CMD_FUSE * Device fuse support | 895 | CONFIG_CMD_FUSE * Device fuse support |
896 | CONFIG_CMD_GETTIME * Get time since boot | 896 | CONFIG_CMD_GETTIME * Get time since boot |
897 | CONFIG_CMD_GO * the 'go' command (exec code) | 897 | CONFIG_CMD_GO * the 'go' command (exec code) |
898 | CONFIG_CMD_GREPENV * search environment | 898 | CONFIG_CMD_GREPENV * search environment |
899 | CONFIG_CMD_HASH * calculate hash / digest | 899 | CONFIG_CMD_HASH * calculate hash / digest |
900 | CONFIG_CMD_HWFLOW * RTS/CTS hw flow control | 900 | CONFIG_CMD_HWFLOW * RTS/CTS hw flow control |
901 | CONFIG_CMD_I2C * I2C serial bus support | 901 | CONFIG_CMD_I2C * I2C serial bus support |
902 | CONFIG_CMD_IDE * IDE harddisk support | 902 | CONFIG_CMD_IDE * IDE harddisk support |
903 | CONFIG_CMD_IMI iminfo | 903 | CONFIG_CMD_IMI iminfo |
904 | CONFIG_CMD_IMLS List all images found in NOR flash | 904 | CONFIG_CMD_IMLS List all images found in NOR flash |
905 | CONFIG_CMD_IMLS_NAND * List all images found in NAND flash | 905 | CONFIG_CMD_IMLS_NAND * List all images found in NAND flash |
906 | CONFIG_CMD_IMMAP * IMMR dump support | 906 | CONFIG_CMD_IMMAP * IMMR dump support |
907 | CONFIG_CMD_IMPORTENV * import an environment | 907 | CONFIG_CMD_IMPORTENV * import an environment |
908 | CONFIG_CMD_INI * import data from an ini file into the env | 908 | CONFIG_CMD_INI * import data from an ini file into the env |
909 | CONFIG_CMD_IRQ * irqinfo | 909 | CONFIG_CMD_IRQ * irqinfo |
910 | CONFIG_CMD_ITEST Integer/string test of 2 values | 910 | CONFIG_CMD_ITEST Integer/string test of 2 values |
911 | CONFIG_CMD_JFFS2 * JFFS2 Support | 911 | CONFIG_CMD_JFFS2 * JFFS2 Support |
912 | CONFIG_CMD_KGDB * kgdb | 912 | CONFIG_CMD_KGDB * kgdb |
913 | CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) | 913 | CONFIG_CMD_LDRINFO * ldrinfo (display Blackfin loader) |
914 | CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration | 914 | CONFIG_CMD_LINK_LOCAL * link-local IP address auto-configuration |
915 | (169.254.*.*) | 915 | (169.254.*.*) |
916 | CONFIG_CMD_LOADB loadb | 916 | CONFIG_CMD_LOADB loadb |
917 | CONFIG_CMD_LOADS loads | 917 | CONFIG_CMD_LOADS loads |
918 | CONFIG_CMD_MD5SUM * print md5 message digest | 918 | CONFIG_CMD_MD5SUM * print md5 message digest |
919 | (requires CONFIG_CMD_MEMORY and CONFIG_MD5) | 919 | (requires CONFIG_CMD_MEMORY and CONFIG_MD5) |
920 | CONFIG_CMD_MEMINFO * Display detailed memory information | 920 | CONFIG_CMD_MEMINFO * Display detailed memory information |
921 | CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, | 921 | CONFIG_CMD_MEMORY md, mm, nm, mw, cp, cmp, crc, base, |
922 | loop, loopw | 922 | loop, loopw |
923 | CONFIG_CMD_MEMTEST * mtest | 923 | CONFIG_CMD_MEMTEST * mtest |
924 | CONFIG_CMD_MISC Misc functions like sleep etc | 924 | CONFIG_CMD_MISC Misc functions like sleep etc |
925 | CONFIG_CMD_MMC * MMC memory mapped support | 925 | CONFIG_CMD_MMC * MMC memory mapped support |
926 | CONFIG_CMD_MII * MII utility commands | 926 | CONFIG_CMD_MII * MII utility commands |
927 | CONFIG_CMD_MTDPARTS * MTD partition support | 927 | CONFIG_CMD_MTDPARTS * MTD partition support |
928 | CONFIG_CMD_NAND * NAND support | 928 | CONFIG_CMD_NAND * NAND support |
929 | CONFIG_CMD_NET bootp, tftpboot, rarpboot | 929 | CONFIG_CMD_NET bootp, tftpboot, rarpboot |
930 | CONFIG_CMD_NFS NFS support | 930 | CONFIG_CMD_NFS NFS support |
931 | CONFIG_CMD_PCA953X * PCA953x I2C gpio commands | 931 | CONFIG_CMD_PCA953X * PCA953x I2C gpio commands |
932 | CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command | 932 | CONFIG_CMD_PCA953X_INFO * PCA953x I2C gpio info command |
933 | CONFIG_CMD_PCI * pciinfo | 933 | CONFIG_CMD_PCI * pciinfo |
934 | CONFIG_CMD_PCMCIA * PCMCIA support | 934 | CONFIG_CMD_PCMCIA * PCMCIA support |
935 | CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network | 935 | CONFIG_CMD_PING * send ICMP ECHO_REQUEST to network |
936 | host | 936 | host |
937 | CONFIG_CMD_PORTIO * Port I/O | 937 | CONFIG_CMD_PORTIO * Port I/O |
938 | CONFIG_CMD_READ * Read raw data from partition | 938 | CONFIG_CMD_READ * Read raw data from partition |
939 | CONFIG_CMD_REGINFO * Register dump | 939 | CONFIG_CMD_REGINFO * Register dump |
940 | CONFIG_CMD_RUN run command in env variable | 940 | CONFIG_CMD_RUN run command in env variable |
941 | CONFIG_CMD_SANDBOX * sb command to access sandbox features | 941 | CONFIG_CMD_SANDBOX * sb command to access sandbox features |
942 | CONFIG_CMD_SAVES * save S record dump | 942 | CONFIG_CMD_SAVES * save S record dump |
943 | CONFIG_CMD_SCSI * SCSI Support | 943 | CONFIG_CMD_SCSI * SCSI Support |
944 | CONFIG_CMD_SDRAM * print SDRAM configuration information | 944 | CONFIG_CMD_SDRAM * print SDRAM configuration information |
945 | (requires CONFIG_CMD_I2C) | 945 | (requires CONFIG_CMD_I2C) |
946 | CONFIG_CMD_SETGETDCR Support for DCR Register access | 946 | CONFIG_CMD_SETGETDCR Support for DCR Register access |
947 | (4xx only) | 947 | (4xx only) |
948 | CONFIG_CMD_SF * Read/write/erase SPI NOR flash | 948 | CONFIG_CMD_SF * Read/write/erase SPI NOR flash |
949 | CONFIG_CMD_SHA1SUM * print sha1 memory digest | 949 | CONFIG_CMD_SHA1SUM * print sha1 memory digest |
950 | (requires CONFIG_CMD_MEMORY) | 950 | (requires CONFIG_CMD_MEMORY) |
951 | CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x | 951 | CONFIG_CMD_SOFTSWITCH * Soft switch setting command for BF60x |
952 | CONFIG_CMD_SOURCE "source" command Support | 952 | CONFIG_CMD_SOURCE "source" command Support |
953 | CONFIG_CMD_SPI * SPI serial bus support | 953 | CONFIG_CMD_SPI * SPI serial bus support |
954 | CONFIG_CMD_TFTPSRV * TFTP transfer in server mode | 954 | CONFIG_CMD_TFTPSRV * TFTP transfer in server mode |
955 | CONFIG_CMD_TFTPPUT * TFTP put command (upload) | 955 | CONFIG_CMD_TFTPPUT * TFTP put command (upload) |
956 | CONFIG_CMD_TIME * run command and report execution time (ARM specific) | 956 | CONFIG_CMD_TIME * run command and report execution time (ARM specific) |
957 | CONFIG_CMD_TIMER * access to the system tick timer | 957 | CONFIG_CMD_TIMER * access to the system tick timer |
958 | CONFIG_CMD_USB * USB support | 958 | CONFIG_CMD_USB * USB support |
959 | CONFIG_CMD_CDP * Cisco Discover Protocol support | 959 | CONFIG_CMD_CDP * Cisco Discover Protocol support |
960 | CONFIG_CMD_MFSL * Microblaze FSL support | 960 | CONFIG_CMD_MFSL * Microblaze FSL support |
961 | CONFIG_CMD_XIMG Load part of Multi Image | 961 | CONFIG_CMD_XIMG Load part of Multi Image |
962 | 962 | ||
963 | 963 | ||
964 | EXAMPLE: If you want all functions except of network | 964 | EXAMPLE: If you want all functions except of network |
965 | support you can write: | 965 | support you can write: |
966 | 966 | ||
967 | #include "config_cmd_all.h" | 967 | #include "config_cmd_all.h" |
968 | #undef CONFIG_CMD_NET | 968 | #undef CONFIG_CMD_NET |
969 | 969 | ||
970 | Other Commands: | 970 | Other Commands: |
971 | fdt (flattened device tree) command: CONFIG_OF_LIBFDT | 971 | fdt (flattened device tree) command: CONFIG_OF_LIBFDT |
972 | 972 | ||
973 | Note: Don't enable the "icache" and "dcache" commands | 973 | Note: Don't enable the "icache" and "dcache" commands |
974 | (configuration option CONFIG_CMD_CACHE) unless you know | 974 | (configuration option CONFIG_CMD_CACHE) unless you know |
975 | what you (and your U-Boot users) are doing. Data | 975 | what you (and your U-Boot users) are doing. Data |
976 | cache cannot be enabled on systems like the 8xx or | 976 | cache cannot be enabled on systems like the 8xx or |
977 | 8260 (where accesses to the IMMR region must be | 977 | 8260 (where accesses to the IMMR region must be |
978 | uncached), and it cannot be disabled on all other | 978 | uncached), and it cannot be disabled on all other |
979 | systems where we (mis-) use the data cache to hold an | 979 | systems where we (mis-) use the data cache to hold an |
980 | initial stack and some data. | 980 | initial stack and some data. |
981 | 981 | ||
982 | 982 | ||
983 | XXX - this list needs to get updated! | 983 | XXX - this list needs to get updated! |
984 | 984 | ||
985 | - Regular expression support: | 985 | - Regular expression support: |
986 | CONFIG_REGEX | 986 | CONFIG_REGEX |
987 | If this variable is defined, U-Boot is linked against | 987 | If this variable is defined, U-Boot is linked against |
988 | the SLRE (Super Light Regular Expression) library, | 988 | the SLRE (Super Light Regular Expression) library, |
989 | which adds regex support to some commands, as for | 989 | which adds regex support to some commands, as for |
990 | example "env grep" and "setexpr". | 990 | example "env grep" and "setexpr". |
991 | 991 | ||
992 | - Device tree: | 992 | - Device tree: |
993 | CONFIG_OF_CONTROL | 993 | CONFIG_OF_CONTROL |
994 | If this variable is defined, U-Boot will use a device tree | 994 | If this variable is defined, U-Boot will use a device tree |
995 | to configure its devices, instead of relying on statically | 995 | to configure its devices, instead of relying on statically |
996 | compiled #defines in the board file. This option is | 996 | compiled #defines in the board file. This option is |
997 | experimental and only available on a few boards. The device | 997 | experimental and only available on a few boards. The device |
998 | tree is available in the global data as gd->fdt_blob. | 998 | tree is available in the global data as gd->fdt_blob. |
999 | 999 | ||
1000 | U-Boot needs to get its device tree from somewhere. This can | 1000 | U-Boot needs to get its device tree from somewhere. This can |
1001 | be done using one of the two options below: | 1001 | be done using one of the two options below: |
1002 | 1002 | ||
1003 | CONFIG_OF_EMBED | 1003 | CONFIG_OF_EMBED |
1004 | If this variable is defined, U-Boot will embed a device tree | 1004 | If this variable is defined, U-Boot will embed a device tree |
1005 | binary in its image. This device tree file should be in the | 1005 | binary in its image. This device tree file should be in the |
1006 | board directory and called <soc>-<board>.dts. The binary file | 1006 | board directory and called <soc>-<board>.dts. The binary file |
1007 | is then picked up in board_init_f() and made available through | 1007 | is then picked up in board_init_f() and made available through |
1008 | the global data structure as gd->blob. | 1008 | the global data structure as gd->blob. |
1009 | 1009 | ||
1010 | CONFIG_OF_SEPARATE | 1010 | CONFIG_OF_SEPARATE |
1011 | If this variable is defined, U-Boot will build a device tree | 1011 | If this variable is defined, U-Boot will build a device tree |
1012 | binary. It will be called u-boot.dtb. Architecture-specific | 1012 | binary. It will be called u-boot.dtb. Architecture-specific |
1013 | code will locate it at run-time. Generally this works by: | 1013 | code will locate it at run-time. Generally this works by: |
1014 | 1014 | ||
1015 | cat u-boot.bin u-boot.dtb >image.bin | 1015 | cat u-boot.bin u-boot.dtb >image.bin |
1016 | 1016 | ||
1017 | and in fact, U-Boot does this for you, creating a file called | 1017 | and in fact, U-Boot does this for you, creating a file called |
1018 | u-boot-dtb.bin which is useful in the common case. You can | 1018 | u-boot-dtb.bin which is useful in the common case. You can |
1019 | still use the individual files if you need something more | 1019 | still use the individual files if you need something more |
1020 | exotic. | 1020 | exotic. |
1021 | 1021 | ||
1022 | - Watchdog: | 1022 | - Watchdog: |
1023 | CONFIG_WATCHDOG | 1023 | CONFIG_WATCHDOG |
1024 | If this variable is defined, it enables watchdog | 1024 | If this variable is defined, it enables watchdog |
1025 | support for the SoC. There must be support in the SoC | 1025 | support for the SoC. There must be support in the SoC |
1026 | specific code for a watchdog. For the 8xx and 8260 | 1026 | specific code for a watchdog. For the 8xx and 8260 |
1027 | CPUs, the SIU Watchdog feature is enabled in the SYPCR | 1027 | CPUs, the SIU Watchdog feature is enabled in the SYPCR |
1028 | register. When supported for a specific SoC is | 1028 | register. When supported for a specific SoC is |
1029 | available, then no further board specific code should | 1029 | available, then no further board specific code should |
1030 | be needed to use it. | 1030 | be needed to use it. |
1031 | 1031 | ||
1032 | CONFIG_HW_WATCHDOG | 1032 | CONFIG_HW_WATCHDOG |
1033 | When using a watchdog circuitry external to the used | 1033 | When using a watchdog circuitry external to the used |
1034 | SoC, then define this variable and provide board | 1034 | SoC, then define this variable and provide board |
1035 | specific code for the "hw_watchdog_reset" function. | 1035 | specific code for the "hw_watchdog_reset" function. |
1036 | 1036 | ||
1037 | - U-Boot Version: | 1037 | - U-Boot Version: |
1038 | CONFIG_VERSION_VARIABLE | 1038 | CONFIG_VERSION_VARIABLE |
1039 | If this variable is defined, an environment variable | 1039 | If this variable is defined, an environment variable |
1040 | named "ver" is created by U-Boot showing the U-Boot | 1040 | named "ver" is created by U-Boot showing the U-Boot |
1041 | version as printed by the "version" command. | 1041 | version as printed by the "version" command. |
1042 | Any change to this variable will be reverted at the | 1042 | Any change to this variable will be reverted at the |
1043 | next reset. | 1043 | next reset. |
1044 | 1044 | ||
1045 | - Real-Time Clock: | 1045 | - Real-Time Clock: |
1046 | 1046 | ||
1047 | When CONFIG_CMD_DATE is selected, the type of the RTC | 1047 | When CONFIG_CMD_DATE is selected, the type of the RTC |
1048 | has to be selected, too. Define exactly one of the | 1048 | has to be selected, too. Define exactly one of the |
1049 | following options: | 1049 | following options: |
1050 | 1050 | ||
1051 | CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx | 1051 | CONFIG_RTC_MPC8xx - use internal RTC of MPC8xx |
1052 | CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC | 1052 | CONFIG_RTC_PCF8563 - use Philips PCF8563 RTC |
1053 | CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC | 1053 | CONFIG_RTC_MC13XXX - use MC13783 or MC13892 RTC |
1054 | CONFIG_RTC_MC146818 - use MC146818 RTC | 1054 | CONFIG_RTC_MC146818 - use MC146818 RTC |
1055 | CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC | 1055 | CONFIG_RTC_DS1307 - use Maxim, Inc. DS1307 RTC |
1056 | CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC | 1056 | CONFIG_RTC_DS1337 - use Maxim, Inc. DS1337 RTC |
1057 | CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC | 1057 | CONFIG_RTC_DS1338 - use Maxim, Inc. DS1338 RTC |
1058 | CONFIG_RTC_DS164x - use Dallas DS164x RTC | 1058 | CONFIG_RTC_DS164x - use Dallas DS164x RTC |
1059 | CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC | 1059 | CONFIG_RTC_ISL1208 - use Intersil ISL1208 RTC |
1060 | CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC | 1060 | CONFIG_RTC_MAX6900 - use Maxim, Inc. MAX6900 RTC |
1061 | CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 | 1061 | CONFIG_SYS_RTC_DS1337_NOOSC - Turn off the OSC output for DS1337 |
1062 | CONFIG_SYS_RV3029_TCR - enable trickle charger on | 1062 | CONFIG_SYS_RV3029_TCR - enable trickle charger on |
1063 | RV3029 RTC. | 1063 | RV3029 RTC. |
1064 | 1064 | ||
1065 | Note that if the RTC uses I2C, then the I2C interface | 1065 | Note that if the RTC uses I2C, then the I2C interface |
1066 | must also be configured. See I2C Support, below. | 1066 | must also be configured. See I2C Support, below. |
1067 | 1067 | ||
1068 | - GPIO Support: | 1068 | - GPIO Support: |
1069 | CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO | 1069 | CONFIG_PCA953X - use NXP's PCA953X series I2C GPIO |
1070 | 1070 | ||
1071 | The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of | 1071 | The CONFIG_SYS_I2C_PCA953X_WIDTH option specifies a list of |
1072 | chip-ngpio pairs that tell the PCA953X driver the number of | 1072 | chip-ngpio pairs that tell the PCA953X driver the number of |
1073 | pins supported by a particular chip. | 1073 | pins supported by a particular chip. |
1074 | 1074 | ||
1075 | Note that if the GPIO device uses I2C, then the I2C interface | 1075 | Note that if the GPIO device uses I2C, then the I2C interface |
1076 | must also be configured. See I2C Support, below. | 1076 | must also be configured. See I2C Support, below. |
1077 | 1077 | ||
1078 | - Timestamp Support: | 1078 | - Timestamp Support: |
1079 | 1079 | ||
1080 | When CONFIG_TIMESTAMP is selected, the timestamp | 1080 | When CONFIG_TIMESTAMP is selected, the timestamp |
1081 | (date and time) of an image is printed by image | 1081 | (date and time) of an image is printed by image |
1082 | commands like bootm or iminfo. This option is | 1082 | commands like bootm or iminfo. This option is |
1083 | automatically enabled when you select CONFIG_CMD_DATE . | 1083 | automatically enabled when you select CONFIG_CMD_DATE . |
1084 | 1084 | ||
1085 | - Partition Labels (disklabels) Supported: | 1085 | - Partition Labels (disklabels) Supported: |
1086 | Zero or more of the following: | 1086 | Zero or more of the following: |
1087 | CONFIG_MAC_PARTITION Apple's MacOS partition table. | 1087 | CONFIG_MAC_PARTITION Apple's MacOS partition table. |
1088 | CONFIG_DOS_PARTITION MS Dos partition table, traditional on the | 1088 | CONFIG_DOS_PARTITION MS Dos partition table, traditional on the |
1089 | Intel architecture, USB sticks, etc. | 1089 | Intel architecture, USB sticks, etc. |
1090 | CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. | 1090 | CONFIG_ISO_PARTITION ISO partition table, used on CDROM etc. |
1091 | CONFIG_EFI_PARTITION GPT partition table, common when EFI is the | 1091 | CONFIG_EFI_PARTITION GPT partition table, common when EFI is the |
1092 | bootloader. Note 2TB partition limit; see | 1092 | bootloader. Note 2TB partition limit; see |
1093 | disk/part_efi.c | 1093 | disk/part_efi.c |
1094 | CONFIG_MTD_PARTITIONS Memory Technology Device partition table. | 1094 | CONFIG_MTD_PARTITIONS Memory Technology Device partition table. |
1095 | 1095 | ||
1096 | If IDE or SCSI support is enabled (CONFIG_CMD_IDE or | 1096 | If IDE or SCSI support is enabled (CONFIG_CMD_IDE or |
1097 | CONFIG_CMD_SCSI) you must configure support for at | 1097 | CONFIG_CMD_SCSI) you must configure support for at |
1098 | least one non-MTD partition type as well. | 1098 | least one non-MTD partition type as well. |
1099 | 1099 | ||
1100 | - IDE Reset method: | 1100 | - IDE Reset method: |
1101 | CONFIG_IDE_RESET_ROUTINE - this is defined in several | 1101 | CONFIG_IDE_RESET_ROUTINE - this is defined in several |
1102 | board configurations files but used nowhere! | 1102 | board configurations files but used nowhere! |
1103 | 1103 | ||
1104 | CONFIG_IDE_RESET - is this is defined, IDE Reset will | 1104 | CONFIG_IDE_RESET - is this is defined, IDE Reset will |
1105 | be performed by calling the function | 1105 | be performed by calling the function |
1106 | ide_set_reset(int reset) | 1106 | ide_set_reset(int reset) |
1107 | which has to be defined in a board specific file | 1107 | which has to be defined in a board specific file |
1108 | 1108 | ||
1109 | - ATAPI Support: | 1109 | - ATAPI Support: |
1110 | CONFIG_ATAPI | 1110 | CONFIG_ATAPI |
1111 | 1111 | ||
1112 | Set this to enable ATAPI support. | 1112 | Set this to enable ATAPI support. |
1113 | 1113 | ||
1114 | - LBA48 Support | 1114 | - LBA48 Support |
1115 | CONFIG_LBA48 | 1115 | CONFIG_LBA48 |
1116 | 1116 | ||
1117 | Set this to enable support for disks larger than 137GB | 1117 | Set this to enable support for disks larger than 137GB |
1118 | Also look at CONFIG_SYS_64BIT_LBA. | 1118 | Also look at CONFIG_SYS_64BIT_LBA. |
1119 | Whithout these , LBA48 support uses 32bit variables and will 'only' | 1119 | Whithout these , LBA48 support uses 32bit variables and will 'only' |
1120 | support disks up to 2.1TB. | 1120 | support disks up to 2.1TB. |
1121 | 1121 | ||
1122 | CONFIG_SYS_64BIT_LBA: | 1122 | CONFIG_SYS_64BIT_LBA: |
1123 | When enabled, makes the IDE subsystem use 64bit sector addresses. | 1123 | When enabled, makes the IDE subsystem use 64bit sector addresses. |
1124 | Default is 32bit. | 1124 | Default is 32bit. |
1125 | 1125 | ||
1126 | - SCSI Support: | 1126 | - SCSI Support: |
1127 | At the moment only there is only support for the | 1127 | At the moment only there is only support for the |
1128 | SYM53C8XX SCSI controller; define | 1128 | SYM53C8XX SCSI controller; define |
1129 | CONFIG_SCSI_SYM53C8XX to enable it. | 1129 | CONFIG_SCSI_SYM53C8XX to enable it. |
1130 | 1130 | ||
1131 | CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and | 1131 | CONFIG_SYS_SCSI_MAX_LUN [8], CONFIG_SYS_SCSI_MAX_SCSI_ID [7] and |
1132 | CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * | 1132 | CONFIG_SYS_SCSI_MAX_DEVICE [CONFIG_SYS_SCSI_MAX_SCSI_ID * |
1133 | CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the | 1133 | CONFIG_SYS_SCSI_MAX_LUN] can be adjusted to define the |
1134 | maximum numbers of LUNs, SCSI ID's and target | 1134 | maximum numbers of LUNs, SCSI ID's and target |
1135 | devices. | 1135 | devices. |
1136 | CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) | 1136 | CONFIG_SYS_SCSI_SYM53C8XX_CCF to fix clock timing (80Mhz) |
1137 | 1137 | ||
1138 | The environment variable 'scsidevs' is set to the number of | 1138 | The environment variable 'scsidevs' is set to the number of |
1139 | SCSI devices found during the last scan. | 1139 | SCSI devices found during the last scan. |
1140 | 1140 | ||
1141 | - NETWORK Support (PCI): | 1141 | - NETWORK Support (PCI): |
1142 | CONFIG_E1000 | 1142 | CONFIG_E1000 |
1143 | Support for Intel 8254x/8257x gigabit chips. | 1143 | Support for Intel 8254x/8257x gigabit chips. |
1144 | 1144 | ||
1145 | CONFIG_E1000_SPI | 1145 | CONFIG_E1000_SPI |
1146 | Utility code for direct access to the SPI bus on Intel 8257x. | 1146 | Utility code for direct access to the SPI bus on Intel 8257x. |
1147 | This does not do anything useful unless you set at least one | 1147 | This does not do anything useful unless you set at least one |
1148 | of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. | 1148 | of CONFIG_CMD_E1000 or CONFIG_E1000_SPI_GENERIC. |
1149 | 1149 | ||
1150 | CONFIG_E1000_SPI_GENERIC | 1150 | CONFIG_E1000_SPI_GENERIC |
1151 | Allow generic access to the SPI bus on the Intel 8257x, for | 1151 | Allow generic access to the SPI bus on the Intel 8257x, for |
1152 | example with the "sspi" command. | 1152 | example with the "sspi" command. |
1153 | 1153 | ||
1154 | CONFIG_CMD_E1000 | 1154 | CONFIG_CMD_E1000 |
1155 | Management command for E1000 devices. When used on devices | 1155 | Management command for E1000 devices. When used on devices |
1156 | with SPI support you can reprogram the EEPROM from U-Boot. | 1156 | with SPI support you can reprogram the EEPROM from U-Boot. |
1157 | 1157 | ||
1158 | CONFIG_E1000_FALLBACK_MAC | 1158 | CONFIG_E1000_FALLBACK_MAC |
1159 | default MAC for empty EEPROM after production. | 1159 | default MAC for empty EEPROM after production. |
1160 | 1160 | ||
1161 | CONFIG_EEPRO100 | 1161 | CONFIG_EEPRO100 |
1162 | Support for Intel 82557/82559/82559ER chips. | 1162 | Support for Intel 82557/82559/82559ER chips. |
1163 | Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM | 1163 | Optional CONFIG_EEPRO100_SROM_WRITE enables EEPROM |
1164 | write routine for first time initialisation. | 1164 | write routine for first time initialisation. |
1165 | 1165 | ||
1166 | CONFIG_TULIP | 1166 | CONFIG_TULIP |
1167 | Support for Digital 2114x chips. | 1167 | Support for Digital 2114x chips. |
1168 | Optional CONFIG_TULIP_SELECT_MEDIA for board specific | 1168 | Optional CONFIG_TULIP_SELECT_MEDIA for board specific |
1169 | modem chip initialisation (KS8761/QS6611). | 1169 | modem chip initialisation (KS8761/QS6611). |
1170 | 1170 | ||
1171 | CONFIG_NATSEMI | 1171 | CONFIG_NATSEMI |
1172 | Support for National dp83815 chips. | 1172 | Support for National dp83815 chips. |
1173 | 1173 | ||
1174 | CONFIG_NS8382X | 1174 | CONFIG_NS8382X |
1175 | Support for National dp8382[01] gigabit chips. | 1175 | Support for National dp8382[01] gigabit chips. |
1176 | 1176 | ||
1177 | - NETWORK Support (other): | 1177 | - NETWORK Support (other): |
1178 | 1178 | ||
1179 | CONFIG_DRIVER_AT91EMAC | 1179 | CONFIG_DRIVER_AT91EMAC |
1180 | Support for AT91RM9200 EMAC. | 1180 | Support for AT91RM9200 EMAC. |
1181 | 1181 | ||
1182 | CONFIG_RMII | 1182 | CONFIG_RMII |
1183 | Define this to use reduced MII inteface | 1183 | Define this to use reduced MII inteface |
1184 | 1184 | ||
1185 | CONFIG_DRIVER_AT91EMAC_QUIET | 1185 | CONFIG_DRIVER_AT91EMAC_QUIET |
1186 | If this defined, the driver is quiet. | 1186 | If this defined, the driver is quiet. |
1187 | The driver doen't show link status messages. | 1187 | The driver doen't show link status messages. |
1188 | 1188 | ||
1189 | CONFIG_CALXEDA_XGMAC | 1189 | CONFIG_CALXEDA_XGMAC |
1190 | Support for the Calxeda XGMAC device | 1190 | Support for the Calxeda XGMAC device |
1191 | 1191 | ||
1192 | CONFIG_LAN91C96 | 1192 | CONFIG_LAN91C96 |
1193 | Support for SMSC's LAN91C96 chips. | 1193 | Support for SMSC's LAN91C96 chips. |
1194 | 1194 | ||
1195 | CONFIG_LAN91C96_BASE | 1195 | CONFIG_LAN91C96_BASE |
1196 | Define this to hold the physical address | 1196 | Define this to hold the physical address |
1197 | of the LAN91C96's I/O space | 1197 | of the LAN91C96's I/O space |
1198 | 1198 | ||
1199 | CONFIG_LAN91C96_USE_32_BIT | 1199 | CONFIG_LAN91C96_USE_32_BIT |
1200 | Define this to enable 32 bit addressing | 1200 | Define this to enable 32 bit addressing |
1201 | 1201 | ||
1202 | CONFIG_SMC91111 | 1202 | CONFIG_SMC91111 |
1203 | Support for SMSC's LAN91C111 chip | 1203 | Support for SMSC's LAN91C111 chip |
1204 | 1204 | ||
1205 | CONFIG_SMC91111_BASE | 1205 | CONFIG_SMC91111_BASE |
1206 | Define this to hold the physical address | 1206 | Define this to hold the physical address |
1207 | of the device (I/O space) | 1207 | of the device (I/O space) |
1208 | 1208 | ||
1209 | CONFIG_SMC_USE_32_BIT | 1209 | CONFIG_SMC_USE_32_BIT |
1210 | Define this if data bus is 32 bits | 1210 | Define this if data bus is 32 bits |
1211 | 1211 | ||
1212 | CONFIG_SMC_USE_IOFUNCS | 1212 | CONFIG_SMC_USE_IOFUNCS |
1213 | Define this to use i/o functions instead of macros | 1213 | Define this to use i/o functions instead of macros |
1214 | (some hardware wont work with macros) | 1214 | (some hardware wont work with macros) |
1215 | 1215 | ||
1216 | CONFIG_DRIVER_TI_EMAC | 1216 | CONFIG_DRIVER_TI_EMAC |
1217 | Support for davinci emac | 1217 | Support for davinci emac |
1218 | 1218 | ||
1219 | CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT | 1219 | CONFIG_SYS_DAVINCI_EMAC_PHY_COUNT |
1220 | Define this if you have more then 3 PHYs. | 1220 | Define this if you have more then 3 PHYs. |
1221 | 1221 | ||
1222 | CONFIG_FTGMAC100 | 1222 | CONFIG_FTGMAC100 |
1223 | Support for Faraday's FTGMAC100 Gigabit SoC Ethernet | 1223 | Support for Faraday's FTGMAC100 Gigabit SoC Ethernet |
1224 | 1224 | ||
1225 | CONFIG_FTGMAC100_EGIGA | 1225 | CONFIG_FTGMAC100_EGIGA |
1226 | Define this to use GE link update with gigabit PHY. | 1226 | Define this to use GE link update with gigabit PHY. |
1227 | Define this if FTGMAC100 is connected to gigabit PHY. | 1227 | Define this if FTGMAC100 is connected to gigabit PHY. |
1228 | If your system has 10/100 PHY only, it might not occur | 1228 | If your system has 10/100 PHY only, it might not occur |
1229 | wrong behavior. Because PHY usually return timeout or | 1229 | wrong behavior. Because PHY usually return timeout or |
1230 | useless data when polling gigabit status and gigabit | 1230 | useless data when polling gigabit status and gigabit |
1231 | control registers. This behavior won't affect the | 1231 | control registers. This behavior won't affect the |
1232 | correctnessof 10/100 link speed update. | 1232 | correctnessof 10/100 link speed update. |
1233 | 1233 | ||
1234 | CONFIG_SMC911X | 1234 | CONFIG_SMC911X |
1235 | Support for SMSC's LAN911x and LAN921x chips | 1235 | Support for SMSC's LAN911x and LAN921x chips |
1236 | 1236 | ||
1237 | CONFIG_SMC911X_BASE | 1237 | CONFIG_SMC911X_BASE |
1238 | Define this to hold the physical address | 1238 | Define this to hold the physical address |
1239 | of the device (I/O space) | 1239 | of the device (I/O space) |
1240 | 1240 | ||
1241 | CONFIG_SMC911X_32_BIT | 1241 | CONFIG_SMC911X_32_BIT |
1242 | Define this if data bus is 32 bits | 1242 | Define this if data bus is 32 bits |
1243 | 1243 | ||
1244 | CONFIG_SMC911X_16_BIT | 1244 | CONFIG_SMC911X_16_BIT |
1245 | Define this if data bus is 16 bits. If your processor | 1245 | Define this if data bus is 16 bits. If your processor |
1246 | automatically converts one 32 bit word to two 16 bit | 1246 | automatically converts one 32 bit word to two 16 bit |
1247 | words you may also try CONFIG_SMC911X_32_BIT. | 1247 | words you may also try CONFIG_SMC911X_32_BIT. |
1248 | 1248 | ||
1249 | CONFIG_SH_ETHER | 1249 | CONFIG_SH_ETHER |
1250 | Support for Renesas on-chip Ethernet controller | 1250 | Support for Renesas on-chip Ethernet controller |
1251 | 1251 | ||
1252 | CONFIG_SH_ETHER_USE_PORT | 1252 | CONFIG_SH_ETHER_USE_PORT |
1253 | Define the number of ports to be used | 1253 | Define the number of ports to be used |
1254 | 1254 | ||
1255 | CONFIG_SH_ETHER_PHY_ADDR | 1255 | CONFIG_SH_ETHER_PHY_ADDR |
1256 | Define the ETH PHY's address | 1256 | Define the ETH PHY's address |
1257 | 1257 | ||
1258 | CONFIG_SH_ETHER_CACHE_WRITEBACK | 1258 | CONFIG_SH_ETHER_CACHE_WRITEBACK |
1259 | If this option is set, the driver enables cache flush. | 1259 | If this option is set, the driver enables cache flush. |
1260 | 1260 | ||
1261 | - TPM Support: | 1261 | - TPM Support: |
1262 | CONFIG_TPM | 1262 | CONFIG_TPM |
1263 | Support TPM devices. | 1263 | Support TPM devices. |
1264 | 1264 | ||
1265 | CONFIG_TPM_TIS_I2C | 1265 | CONFIG_TPM_TIS_I2C |
1266 | Support for i2c bus TPM devices. Only one device | 1266 | Support for i2c bus TPM devices. Only one device |
1267 | per system is supported at this time. | 1267 | per system is supported at this time. |
1268 | 1268 | ||
1269 | CONFIG_TPM_TIS_I2C_BUS_NUMBER | 1269 | CONFIG_TPM_TIS_I2C_BUS_NUMBER |
1270 | Define the the i2c bus number for the TPM device | 1270 | Define the the i2c bus number for the TPM device |
1271 | 1271 | ||
1272 | CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS | 1272 | CONFIG_TPM_TIS_I2C_SLAVE_ADDRESS |
1273 | Define the TPM's address on the i2c bus | 1273 | Define the TPM's address on the i2c bus |
1274 | 1274 | ||
1275 | CONFIG_TPM_TIS_I2C_BURST_LIMITATION | 1275 | CONFIG_TPM_TIS_I2C_BURST_LIMITATION |
1276 | Define the burst count bytes upper limit | 1276 | Define the burst count bytes upper limit |
1277 | 1277 | ||
1278 | CONFIG_TPM_ATMEL_TWI | 1278 | CONFIG_TPM_ATMEL_TWI |
1279 | Support for Atmel TWI TPM device. Requires I2C support. | 1279 | Support for Atmel TWI TPM device. Requires I2C support. |
1280 | 1280 | ||
1281 | CONFIG_TPM_TIS_LPC | 1281 | CONFIG_TPM_TIS_LPC |
1282 | Support for generic parallel port TPM devices. Only one device | 1282 | Support for generic parallel port TPM devices. Only one device |
1283 | per system is supported at this time. | 1283 | per system is supported at this time. |
1284 | 1284 | ||
1285 | CONFIG_TPM_TIS_BASE_ADDRESS | 1285 | CONFIG_TPM_TIS_BASE_ADDRESS |
1286 | Base address where the generic TPM device is mapped | 1286 | Base address where the generic TPM device is mapped |
1287 | to. Contemporary x86 systems usually map it at | 1287 | to. Contemporary x86 systems usually map it at |
1288 | 0xfed40000. | 1288 | 0xfed40000. |
1289 | 1289 | ||
1290 | CONFIG_CMD_TPM | 1290 | CONFIG_CMD_TPM |
1291 | Add tpm monitor functions. | 1291 | Add tpm monitor functions. |
1292 | Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also | 1292 | Requires CONFIG_TPM. If CONFIG_TPM_AUTH_SESSIONS is set, also |
1293 | provides monitor access to authorized functions. | 1293 | provides monitor access to authorized functions. |
1294 | 1294 | ||
1295 | CONFIG_TPM | 1295 | CONFIG_TPM |
1296 | Define this to enable the TPM support library which provides | 1296 | Define this to enable the TPM support library which provides |
1297 | functional interfaces to some TPM commands. | 1297 | functional interfaces to some TPM commands. |
1298 | Requires support for a TPM device. | 1298 | Requires support for a TPM device. |
1299 | 1299 | ||
1300 | CONFIG_TPM_AUTH_SESSIONS | 1300 | CONFIG_TPM_AUTH_SESSIONS |
1301 | Define this to enable authorized functions in the TPM library. | 1301 | Define this to enable authorized functions in the TPM library. |
1302 | Requires CONFIG_TPM and CONFIG_SHA1. | 1302 | Requires CONFIG_TPM and CONFIG_SHA1. |
1303 | 1303 | ||
1304 | - USB Support: | 1304 | - USB Support: |
1305 | At the moment only the UHCI host controller is | 1305 | At the moment only the UHCI host controller is |
1306 | supported (PIP405, MIP405, MPC5200); define | 1306 | supported (PIP405, MIP405, MPC5200); define |
1307 | CONFIG_USB_UHCI to enable it. | 1307 | CONFIG_USB_UHCI to enable it. |
1308 | define CONFIG_USB_KEYBOARD to enable the USB Keyboard | 1308 | define CONFIG_USB_KEYBOARD to enable the USB Keyboard |
1309 | and define CONFIG_USB_STORAGE to enable the USB | 1309 | and define CONFIG_USB_STORAGE to enable the USB |
1310 | storage devices. | 1310 | storage devices. |
1311 | Note: | 1311 | Note: |
1312 | Supported are USB Keyboards and USB Floppy drives | 1312 | Supported are USB Keyboards and USB Floppy drives |
1313 | (TEAC FD-05PUB). | 1313 | (TEAC FD-05PUB). |
1314 | MPC5200 USB requires additional defines: | 1314 | MPC5200 USB requires additional defines: |
1315 | CONFIG_USB_CLOCK | 1315 | CONFIG_USB_CLOCK |
1316 | for 528 MHz Clock: 0x0001bbbb | 1316 | for 528 MHz Clock: 0x0001bbbb |
1317 | CONFIG_PSC3_USB | 1317 | CONFIG_PSC3_USB |
1318 | for USB on PSC3 | 1318 | for USB on PSC3 |
1319 | CONFIG_USB_CONFIG | 1319 | CONFIG_USB_CONFIG |
1320 | for differential drivers: 0x00001000 | 1320 | for differential drivers: 0x00001000 |
1321 | for single ended drivers: 0x00005000 | 1321 | for single ended drivers: 0x00005000 |
1322 | for differential drivers on PSC3: 0x00000100 | 1322 | for differential drivers on PSC3: 0x00000100 |
1323 | for single ended drivers on PSC3: 0x00004100 | 1323 | for single ended drivers on PSC3: 0x00004100 |
1324 | CONFIG_SYS_USB_EVENT_POLL | 1324 | CONFIG_SYS_USB_EVENT_POLL |
1325 | May be defined to allow interrupt polling | 1325 | May be defined to allow interrupt polling |
1326 | instead of using asynchronous interrupts | 1326 | instead of using asynchronous interrupts |
1327 | 1327 | ||
1328 | CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the | 1328 | CONFIG_USB_EHCI_TXFIFO_THRESH enables setting of the |
1329 | txfilltuning field in the EHCI controller on reset. | 1329 | txfilltuning field in the EHCI controller on reset. |
1330 | 1330 | ||
1331 | CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum | 1331 | CONFIG_USB_HUB_MIN_POWER_ON_DELAY defines the minimum |
1332 | interval for usb hub power-on delay.(minimum 100msec) | 1332 | interval for usb hub power-on delay.(minimum 100msec) |
1333 | 1333 | ||
1334 | - USB Device: | 1334 | - USB Device: |
1335 | Define the below if you wish to use the USB console. | 1335 | Define the below if you wish to use the USB console. |
1336 | Once firmware is rebuilt from a serial console issue the | 1336 | Once firmware is rebuilt from a serial console issue the |
1337 | command "setenv stdin usbtty; setenv stdout usbtty" and | 1337 | command "setenv stdin usbtty; setenv stdout usbtty" and |
1338 | attach your USB cable. The Unix command "dmesg" should print | 1338 | attach your USB cable. The Unix command "dmesg" should print |
1339 | it has found a new device. The environment variable usbtty | 1339 | it has found a new device. The environment variable usbtty |
1340 | can be set to gserial or cdc_acm to enable your device to | 1340 | can be set to gserial or cdc_acm to enable your device to |
1341 | appear to a USB host as a Linux gserial device or a | 1341 | appear to a USB host as a Linux gserial device or a |
1342 | Common Device Class Abstract Control Model serial device. | 1342 | Common Device Class Abstract Control Model serial device. |
1343 | If you select usbtty = gserial you should be able to enumerate | 1343 | If you select usbtty = gserial you should be able to enumerate |
1344 | a Linux host by | 1344 | a Linux host by |
1345 | # modprobe usbserial vendor=0xVendorID product=0xProductID | 1345 | # modprobe usbserial vendor=0xVendorID product=0xProductID |
1346 | else if using cdc_acm, simply setting the environment | 1346 | else if using cdc_acm, simply setting the environment |
1347 | variable usbtty to be cdc_acm should suffice. The following | 1347 | variable usbtty to be cdc_acm should suffice. The following |
1348 | might be defined in YourBoardName.h | 1348 | might be defined in YourBoardName.h |
1349 | 1349 | ||
1350 | CONFIG_USB_DEVICE | 1350 | CONFIG_USB_DEVICE |
1351 | Define this to build a UDC device | 1351 | Define this to build a UDC device |
1352 | 1352 | ||
1353 | CONFIG_USB_TTY | 1353 | CONFIG_USB_TTY |
1354 | Define this to have a tty type of device available to | 1354 | Define this to have a tty type of device available to |
1355 | talk to the UDC device | 1355 | talk to the UDC device |
1356 | 1356 | ||
1357 | CONFIG_USBD_HS | 1357 | CONFIG_USBD_HS |
1358 | Define this to enable the high speed support for usb | 1358 | Define this to enable the high speed support for usb |
1359 | device and usbtty. If this feature is enabled, a routine | 1359 | device and usbtty. If this feature is enabled, a routine |
1360 | int is_usbd_high_speed(void) | 1360 | int is_usbd_high_speed(void) |
1361 | also needs to be defined by the driver to dynamically poll | 1361 | also needs to be defined by the driver to dynamically poll |
1362 | whether the enumeration has succeded at high speed or full | 1362 | whether the enumeration has succeded at high speed or full |
1363 | speed. | 1363 | speed. |
1364 | 1364 | ||
1365 | CONFIG_SYS_CONSOLE_IS_IN_ENV | 1365 | CONFIG_SYS_CONSOLE_IS_IN_ENV |
1366 | Define this if you want stdin, stdout &/or stderr to | 1366 | Define this if you want stdin, stdout &/or stderr to |
1367 | be set to usbtty. | 1367 | be set to usbtty. |
1368 | 1368 | ||
1369 | mpc8xx: | 1369 | mpc8xx: |
1370 | CONFIG_SYS_USB_EXTC_CLK 0xBLAH | 1370 | CONFIG_SYS_USB_EXTC_CLK 0xBLAH |
1371 | Derive USB clock from external clock "blah" | 1371 | Derive USB clock from external clock "blah" |
1372 | - CONFIG_SYS_USB_EXTC_CLK 0x02 | 1372 | - CONFIG_SYS_USB_EXTC_CLK 0x02 |
1373 | 1373 | ||
1374 | CONFIG_SYS_USB_BRG_CLK 0xBLAH | 1374 | CONFIG_SYS_USB_BRG_CLK 0xBLAH |
1375 | Derive USB clock from brgclk | 1375 | Derive USB clock from brgclk |
1376 | - CONFIG_SYS_USB_BRG_CLK 0x04 | 1376 | - CONFIG_SYS_USB_BRG_CLK 0x04 |
1377 | 1377 | ||
1378 | If you have a USB-IF assigned VendorID then you may wish to | 1378 | If you have a USB-IF assigned VendorID then you may wish to |
1379 | define your own vendor specific values either in BoardName.h | 1379 | define your own vendor specific values either in BoardName.h |
1380 | or directly in usbd_vendor_info.h. If you don't define | 1380 | or directly in usbd_vendor_info.h. If you don't define |
1381 | CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, | 1381 | CONFIG_USBD_MANUFACTURER, CONFIG_USBD_PRODUCT_NAME, |
1382 | CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot | 1382 | CONFIG_USBD_VENDORID and CONFIG_USBD_PRODUCTID, then U-Boot |
1383 | should pretend to be a Linux device to it's target host. | 1383 | should pretend to be a Linux device to it's target host. |
1384 | 1384 | ||
1385 | CONFIG_USBD_MANUFACTURER | 1385 | CONFIG_USBD_MANUFACTURER |
1386 | Define this string as the name of your company for | 1386 | Define this string as the name of your company for |
1387 | - CONFIG_USBD_MANUFACTURER "my company" | 1387 | - CONFIG_USBD_MANUFACTURER "my company" |
1388 | 1388 | ||
1389 | CONFIG_USBD_PRODUCT_NAME | 1389 | CONFIG_USBD_PRODUCT_NAME |
1390 | Define this string as the name of your product | 1390 | Define this string as the name of your product |
1391 | - CONFIG_USBD_PRODUCT_NAME "acme usb device" | 1391 | - CONFIG_USBD_PRODUCT_NAME "acme usb device" |
1392 | 1392 | ||
1393 | CONFIG_USBD_VENDORID | 1393 | CONFIG_USBD_VENDORID |
1394 | Define this as your assigned Vendor ID from the USB | 1394 | Define this as your assigned Vendor ID from the USB |
1395 | Implementors Forum. This *must* be a genuine Vendor ID | 1395 | Implementors Forum. This *must* be a genuine Vendor ID |
1396 | to avoid polluting the USB namespace. | 1396 | to avoid polluting the USB namespace. |
1397 | - CONFIG_USBD_VENDORID 0xFFFF | 1397 | - CONFIG_USBD_VENDORID 0xFFFF |
1398 | 1398 | ||
1399 | CONFIG_USBD_PRODUCTID | 1399 | CONFIG_USBD_PRODUCTID |
1400 | Define this as the unique Product ID | 1400 | Define this as the unique Product ID |
1401 | for your device | 1401 | for your device |
1402 | - CONFIG_USBD_PRODUCTID 0xFFFF | 1402 | - CONFIG_USBD_PRODUCTID 0xFFFF |
1403 | 1403 | ||
1404 | Some USB device drivers may need to check USB cable attachment. | 1404 | Some USB device drivers may need to check USB cable attachment. |
1405 | In this case you can enable following config in BoardName.h: | 1405 | In this case you can enable following config in BoardName.h: |
1406 | CONFIG_USB_CABLE_CHECK | 1406 | CONFIG_USB_CABLE_CHECK |
1407 | This enables function definition: | 1407 | This enables function definition: |
1408 | - usb_cable_connected() in include/usb.h | 1408 | - usb_cable_connected() in include/usb.h |
1409 | Implementation of this function is board-specific. | 1409 | Implementation of this function is board-specific. |
1410 | 1410 | ||
1411 | - ULPI Layer Support: | 1411 | - ULPI Layer Support: |
1412 | The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via | 1412 | The ULPI (UTMI Low Pin (count) Interface) PHYs are supported via |
1413 | the generic ULPI layer. The generic layer accesses the ULPI PHY | 1413 | the generic ULPI layer. The generic layer accesses the ULPI PHY |
1414 | via the platform viewport, so you need both the genric layer and | 1414 | via the platform viewport, so you need both the genric layer and |
1415 | the viewport enabled. Currently only Chipidea/ARC based | 1415 | the viewport enabled. Currently only Chipidea/ARC based |
1416 | viewport is supported. | 1416 | viewport is supported. |
1417 | To enable the ULPI layer support, define CONFIG_USB_ULPI and | 1417 | To enable the ULPI layer support, define CONFIG_USB_ULPI and |
1418 | CONFIG_USB_ULPI_VIEWPORT in your board configuration file. | 1418 | CONFIG_USB_ULPI_VIEWPORT in your board configuration file. |
1419 | If your ULPI phy needs a different reference clock than the | 1419 | If your ULPI phy needs a different reference clock than the |
1420 | standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to | 1420 | standard 24 MHz then you have to define CONFIG_ULPI_REF_CLK to |
1421 | the appropriate value in Hz. | 1421 | the appropriate value in Hz. |
1422 | 1422 | ||
1423 | - MMC Support: | 1423 | - MMC Support: |
1424 | The MMC controller on the Intel PXA is supported. To | 1424 | The MMC controller on the Intel PXA is supported. To |
1425 | enable this define CONFIG_MMC. The MMC can be | 1425 | enable this define CONFIG_MMC. The MMC can be |
1426 | accessed from the boot prompt by mapping the device | 1426 | accessed from the boot prompt by mapping the device |
1427 | to physical memory similar to flash. Command line is | 1427 | to physical memory similar to flash. Command line is |
1428 | enabled with CONFIG_CMD_MMC. The MMC driver also works with | 1428 | enabled with CONFIG_CMD_MMC. The MMC driver also works with |
1429 | the FAT fs. This is enabled with CONFIG_CMD_FAT. | 1429 | the FAT fs. This is enabled with CONFIG_CMD_FAT. |
1430 | 1430 | ||
1431 | CONFIG_SH_MMCIF | 1431 | CONFIG_SH_MMCIF |
1432 | Support for Renesas on-chip MMCIF controller | 1432 | Support for Renesas on-chip MMCIF controller |
1433 | 1433 | ||
1434 | CONFIG_SH_MMCIF_ADDR | 1434 | CONFIG_SH_MMCIF_ADDR |
1435 | Define the base address of MMCIF registers | 1435 | Define the base address of MMCIF registers |
1436 | 1436 | ||
1437 | CONFIG_SH_MMCIF_CLK | 1437 | CONFIG_SH_MMCIF_CLK |
1438 | Define the clock frequency for MMCIF | 1438 | Define the clock frequency for MMCIF |
1439 | 1439 | ||
1440 | - USB Device Firmware Update (DFU) class support: | 1440 | - USB Device Firmware Update (DFU) class support: |
1441 | CONFIG_DFU_FUNCTION | 1441 | CONFIG_DFU_FUNCTION |
1442 | This enables the USB portion of the DFU USB class | 1442 | This enables the USB portion of the DFU USB class |
1443 | 1443 | ||
1444 | CONFIG_CMD_DFU | 1444 | CONFIG_CMD_DFU |
1445 | This enables the command "dfu" which is used to have | 1445 | This enables the command "dfu" which is used to have |
1446 | U-Boot create a DFU class device via USB. This command | 1446 | U-Boot create a DFU class device via USB. This command |
1447 | requires that the "dfu_alt_info" environment variable be | 1447 | requires that the "dfu_alt_info" environment variable be |
1448 | set and define the alt settings to expose to the host. | 1448 | set and define the alt settings to expose to the host. |
1449 | 1449 | ||
1450 | CONFIG_DFU_MMC | 1450 | CONFIG_DFU_MMC |
1451 | This enables support for exposing (e)MMC devices via DFU. | 1451 | This enables support for exposing (e)MMC devices via DFU. |
1452 | 1452 | ||
1453 | CONFIG_DFU_NAND | 1453 | CONFIG_DFU_NAND |
1454 | This enables support for exposing NAND devices via DFU. | 1454 | This enables support for exposing NAND devices via DFU. |
1455 | 1455 | ||
1456 | CONFIG_DFU_RAM | 1456 | CONFIG_DFU_RAM |
1457 | This enables support for exposing RAM via DFU. | 1457 | This enables support for exposing RAM via DFU. |
1458 | Note: DFU spec refer to non-volatile memory usage, but | 1458 | Note: DFU spec refer to non-volatile memory usage, but |
1459 | allow usages beyond the scope of spec - here RAM usage, | 1459 | allow usages beyond the scope of spec - here RAM usage, |
1460 | one that would help mostly the developer. | 1460 | one that would help mostly the developer. |
1461 | 1461 | ||
1462 | CONFIG_SYS_DFU_DATA_BUF_SIZE | 1462 | CONFIG_SYS_DFU_DATA_BUF_SIZE |
1463 | Dfu transfer uses a buffer before writing data to the | 1463 | Dfu transfer uses a buffer before writing data to the |
1464 | raw storage device. Make the size (in bytes) of this buffer | 1464 | raw storage device. Make the size (in bytes) of this buffer |
1465 | configurable. The size of this buffer is also configurable | 1465 | configurable. The size of this buffer is also configurable |
1466 | through the "dfu_bufsiz" environment variable. | 1466 | through the "dfu_bufsiz" environment variable. |
1467 | 1467 | ||
1468 | CONFIG_SYS_DFU_MAX_FILE_SIZE | 1468 | CONFIG_SYS_DFU_MAX_FILE_SIZE |
1469 | When updating files rather than the raw storage device, | 1469 | When updating files rather than the raw storage device, |
1470 | we use a static buffer to copy the file into and then write | 1470 | we use a static buffer to copy the file into and then write |
1471 | the buffer once we've been given the whole file. Define | 1471 | the buffer once we've been given the whole file. Define |
1472 | this to the maximum filesize (in bytes) for the buffer. | 1472 | this to the maximum filesize (in bytes) for the buffer. |
1473 | Default is 4 MiB if undefined. | 1473 | Default is 4 MiB if undefined. |
1474 | 1474 | ||
1475 | - Journaling Flash filesystem support: | 1475 | - Journaling Flash filesystem support: |
1476 | CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, | 1476 | CONFIG_JFFS2_NAND, CONFIG_JFFS2_NAND_OFF, CONFIG_JFFS2_NAND_SIZE, |
1477 | CONFIG_JFFS2_NAND_DEV | 1477 | CONFIG_JFFS2_NAND_DEV |
1478 | Define these for a default partition on a NAND device | 1478 | Define these for a default partition on a NAND device |
1479 | 1479 | ||
1480 | CONFIG_SYS_JFFS2_FIRST_SECTOR, | 1480 | CONFIG_SYS_JFFS2_FIRST_SECTOR, |
1481 | CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS | 1481 | CONFIG_SYS_JFFS2_FIRST_BANK, CONFIG_SYS_JFFS2_NUM_BANKS |
1482 | Define these for a default partition on a NOR device | 1482 | Define these for a default partition on a NOR device |
1483 | 1483 | ||
1484 | CONFIG_SYS_JFFS_CUSTOM_PART | 1484 | CONFIG_SYS_JFFS_CUSTOM_PART |
1485 | Define this to create an own partition. You have to provide a | 1485 | Define this to create an own partition. You have to provide a |
1486 | function struct part_info* jffs2_part_info(int part_num) | 1486 | function struct part_info* jffs2_part_info(int part_num) |
1487 | 1487 | ||
1488 | If you define only one JFFS2 partition you may also want to | 1488 | If you define only one JFFS2 partition you may also want to |
1489 | #define CONFIG_SYS_JFFS_SINGLE_PART 1 | 1489 | #define CONFIG_SYS_JFFS_SINGLE_PART 1 |
1490 | to disable the command chpart. This is the default when you | 1490 | to disable the command chpart. This is the default when you |
1491 | have not defined a custom partition | 1491 | have not defined a custom partition |
1492 | 1492 | ||
1493 | - FAT(File Allocation Table) filesystem write function support: | 1493 | - FAT(File Allocation Table) filesystem write function support: |
1494 | CONFIG_FAT_WRITE | 1494 | CONFIG_FAT_WRITE |
1495 | 1495 | ||
1496 | Define this to enable support for saving memory data as a | 1496 | Define this to enable support for saving memory data as a |
1497 | file in FAT formatted partition. | 1497 | file in FAT formatted partition. |
1498 | 1498 | ||
1499 | This will also enable the command "fatwrite" enabling the | 1499 | This will also enable the command "fatwrite" enabling the |
1500 | user to write files to FAT. | 1500 | user to write files to FAT. |
1501 | 1501 | ||
1502 | CBFS (Coreboot Filesystem) support | 1502 | CBFS (Coreboot Filesystem) support |
1503 | CONFIG_CMD_CBFS | 1503 | CONFIG_CMD_CBFS |
1504 | 1504 | ||
1505 | Define this to enable support for reading from a Coreboot | 1505 | Define this to enable support for reading from a Coreboot |
1506 | filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls | 1506 | filesystem. Available commands are cbfsinit, cbfsinfo, cbfsls |
1507 | and cbfsload. | 1507 | and cbfsload. |
1508 | 1508 | ||
1509 | - Keyboard Support: | 1509 | - Keyboard Support: |
1510 | CONFIG_ISA_KEYBOARD | 1510 | CONFIG_ISA_KEYBOARD |
1511 | 1511 | ||
1512 | Define this to enable standard (PC-Style) keyboard | 1512 | Define this to enable standard (PC-Style) keyboard |
1513 | support | 1513 | support |
1514 | 1514 | ||
1515 | CONFIG_I8042_KBD | 1515 | CONFIG_I8042_KBD |
1516 | Standard PC keyboard driver with US (is default) and | 1516 | Standard PC keyboard driver with US (is default) and |
1517 | GERMAN key layout (switch via environment 'keymap=de') support. | 1517 | GERMAN key layout (switch via environment 'keymap=de') support. |
1518 | Export function i8042_kbd_init, i8042_tstc and i8042_getc | 1518 | Export function i8042_kbd_init, i8042_tstc and i8042_getc |
1519 | for cfb_console. Supports cursor blinking. | 1519 | for cfb_console. Supports cursor blinking. |
1520 | 1520 | ||
1521 | CONFIG_CROS_EC_KEYB | 1521 | CONFIG_CROS_EC_KEYB |
1522 | Enables a Chrome OS keyboard using the CROS_EC interface. | 1522 | Enables a Chrome OS keyboard using the CROS_EC interface. |
1523 | This uses CROS_EC to communicate with a second microcontroller | 1523 | This uses CROS_EC to communicate with a second microcontroller |
1524 | which provides key scans on request. | 1524 | which provides key scans on request. |
1525 | 1525 | ||
1526 | - Video support: | 1526 | - Video support: |
1527 | CONFIG_VIDEO | 1527 | CONFIG_VIDEO |
1528 | 1528 | ||
1529 | Define this to enable video support (for output to | 1529 | Define this to enable video support (for output to |
1530 | video). | 1530 | video). |
1531 | 1531 | ||
1532 | CONFIG_VIDEO_CT69000 | 1532 | CONFIG_VIDEO_CT69000 |
1533 | 1533 | ||
1534 | Enable Chips & Technologies 69000 Video chip | 1534 | Enable Chips & Technologies 69000 Video chip |
1535 | 1535 | ||
1536 | CONFIG_VIDEO_SMI_LYNXEM | 1536 | CONFIG_VIDEO_SMI_LYNXEM |
1537 | Enable Silicon Motion SMI 712/710/810 Video chip. The | 1537 | Enable Silicon Motion SMI 712/710/810 Video chip. The |
1538 | video output is selected via environment 'videoout' | 1538 | video output is selected via environment 'videoout' |
1539 | (1 = LCD and 2 = CRT). If videoout is undefined, CRT is | 1539 | (1 = LCD and 2 = CRT). If videoout is undefined, CRT is |
1540 | assumed. | 1540 | assumed. |
1541 | 1541 | ||
1542 | For the CT69000 and SMI_LYNXEM drivers, videomode is | 1542 | For the CT69000 and SMI_LYNXEM drivers, videomode is |
1543 | selected via environment 'videomode'. Two different ways | 1543 | selected via environment 'videomode'. Two different ways |
1544 | are possible: | 1544 | are possible: |
1545 | - "videomode=num" 'num' is a standard LiLo mode numbers. | 1545 | - "videomode=num" 'num' is a standard LiLo mode numbers. |
1546 | Following standard modes are supported (* is default): | 1546 | Following standard modes are supported (* is default): |
1547 | 1547 | ||
1548 | Colors 640x480 800x600 1024x768 1152x864 1280x1024 | 1548 | Colors 640x480 800x600 1024x768 1152x864 1280x1024 |
1549 | -------------+--------------------------------------------- | 1549 | -------------+--------------------------------------------- |
1550 | 8 bits | 0x301* 0x303 0x305 0x161 0x307 | 1550 | 8 bits | 0x301* 0x303 0x305 0x161 0x307 |
1551 | 15 bits | 0x310 0x313 0x316 0x162 0x319 | 1551 | 15 bits | 0x310 0x313 0x316 0x162 0x319 |
1552 | 16 bits | 0x311 0x314 0x317 0x163 0x31A | 1552 | 16 bits | 0x311 0x314 0x317 0x163 0x31A |
1553 | 24 bits | 0x312 0x315 0x318 ? 0x31B | 1553 | 24 bits | 0x312 0x315 0x318 ? 0x31B |
1554 | -------------+--------------------------------------------- | 1554 | -------------+--------------------------------------------- |
1555 | (i.e. setenv videomode 317; saveenv; reset;) | 1555 | (i.e. setenv videomode 317; saveenv; reset;) |
1556 | 1556 | ||
1557 | - "videomode=bootargs" all the video parameters are parsed | 1557 | - "videomode=bootargs" all the video parameters are parsed |
1558 | from the bootargs. (See drivers/video/videomodes.c) | 1558 | from the bootargs. (See drivers/video/videomodes.c) |
1559 | 1559 | ||
1560 | 1560 | ||
1561 | CONFIG_VIDEO_SED13806 | 1561 | CONFIG_VIDEO_SED13806 |
1562 | Enable Epson SED13806 driver. This driver supports 8bpp | 1562 | Enable Epson SED13806 driver. This driver supports 8bpp |
1563 | and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP | 1563 | and 16bpp modes defined by CONFIG_VIDEO_SED13806_8BPP |
1564 | or CONFIG_VIDEO_SED13806_16BPP | 1564 | or CONFIG_VIDEO_SED13806_16BPP |
1565 | 1565 | ||
1566 | CONFIG_FSL_DIU_FB | 1566 | CONFIG_FSL_DIU_FB |
1567 | Enable the Freescale DIU video driver. Reference boards for | 1567 | Enable the Freescale DIU video driver. Reference boards for |
1568 | SOCs that have a DIU should define this macro to enable DIU | 1568 | SOCs that have a DIU should define this macro to enable DIU |
1569 | support, and should also define these other macros: | 1569 | support, and should also define these other macros: |
1570 | 1570 | ||
1571 | CONFIG_SYS_DIU_ADDR | 1571 | CONFIG_SYS_DIU_ADDR |
1572 | CONFIG_VIDEO | 1572 | CONFIG_VIDEO |
1573 | CONFIG_CMD_BMP | 1573 | CONFIG_CMD_BMP |
1574 | CONFIG_CFB_CONSOLE | 1574 | CONFIG_CFB_CONSOLE |
1575 | CONFIG_VIDEO_SW_CURSOR | 1575 | CONFIG_VIDEO_SW_CURSOR |
1576 | CONFIG_VGA_AS_SINGLE_DEVICE | 1576 | CONFIG_VGA_AS_SINGLE_DEVICE |
1577 | CONFIG_VIDEO_LOGO | 1577 | CONFIG_VIDEO_LOGO |
1578 | CONFIG_VIDEO_BMP_LOGO | 1578 | CONFIG_VIDEO_BMP_LOGO |
1579 | 1579 | ||
1580 | The DIU driver will look for the 'video-mode' environment | 1580 | The DIU driver will look for the 'video-mode' environment |
1581 | variable, and if defined, enable the DIU as a console during | 1581 | variable, and if defined, enable the DIU as a console during |
1582 | boot. See the documentation file README.video for a | 1582 | boot. See the documentation file README.video for a |
1583 | description of this variable. | 1583 | description of this variable. |
1584 | 1584 | ||
1585 | CONFIG_VIDEO_VGA | 1585 | CONFIG_VIDEO_VGA |
1586 | 1586 | ||
1587 | Enable the VGA video / BIOS for x86. The alternative if you | 1587 | Enable the VGA video / BIOS for x86. The alternative if you |
1588 | are using coreboot is to use the coreboot frame buffer | 1588 | are using coreboot is to use the coreboot frame buffer |
1589 | driver. | 1589 | driver. |
1590 | 1590 | ||
1591 | 1591 | ||
1592 | - Keyboard Support: | 1592 | - Keyboard Support: |
1593 | CONFIG_KEYBOARD | 1593 | CONFIG_KEYBOARD |
1594 | 1594 | ||
1595 | Define this to enable a custom keyboard support. | 1595 | Define this to enable a custom keyboard support. |
1596 | This simply calls drv_keyboard_init() which must be | 1596 | This simply calls drv_keyboard_init() which must be |
1597 | defined in your board-specific files. | 1597 | defined in your board-specific files. |
1598 | The only board using this so far is RBC823. | 1598 | The only board using this so far is RBC823. |
1599 | 1599 | ||
1600 | - LCD Support: CONFIG_LCD | 1600 | - LCD Support: CONFIG_LCD |
1601 | 1601 | ||
1602 | Define this to enable LCD support (for output to LCD | 1602 | Define this to enable LCD support (for output to LCD |
1603 | display); also select one of the supported displays | 1603 | display); also select one of the supported displays |
1604 | by defining one of these: | 1604 | by defining one of these: |
1605 | 1605 | ||
1606 | CONFIG_ATMEL_LCD: | 1606 | CONFIG_ATMEL_LCD: |
1607 | 1607 | ||
1608 | HITACHI TX09D70VM1CCA, 3.5", 240x320. | 1608 | HITACHI TX09D70VM1CCA, 3.5", 240x320. |
1609 | 1609 | ||
1610 | CONFIG_NEC_NL6448AC33: | 1610 | CONFIG_NEC_NL6448AC33: |
1611 | 1611 | ||
1612 | NEC NL6448AC33-18. Active, color, single scan. | 1612 | NEC NL6448AC33-18. Active, color, single scan. |
1613 | 1613 | ||
1614 | CONFIG_NEC_NL6448BC20 | 1614 | CONFIG_NEC_NL6448BC20 |
1615 | 1615 | ||
1616 | NEC NL6448BC20-08. 6.5", 640x480. | 1616 | NEC NL6448BC20-08. 6.5", 640x480. |
1617 | Active, color, single scan. | 1617 | Active, color, single scan. |
1618 | 1618 | ||
1619 | CONFIG_NEC_NL6448BC33_54 | 1619 | CONFIG_NEC_NL6448BC33_54 |
1620 | 1620 | ||
1621 | NEC NL6448BC33-54. 10.4", 640x480. | 1621 | NEC NL6448BC33-54. 10.4", 640x480. |
1622 | Active, color, single scan. | 1622 | Active, color, single scan. |
1623 | 1623 | ||
1624 | CONFIG_SHARP_16x9 | 1624 | CONFIG_SHARP_16x9 |
1625 | 1625 | ||
1626 | Sharp 320x240. Active, color, single scan. | 1626 | Sharp 320x240. Active, color, single scan. |
1627 | It isn't 16x9, and I am not sure what it is. | 1627 | It isn't 16x9, and I am not sure what it is. |
1628 | 1628 | ||
1629 | CONFIG_SHARP_LQ64D341 | 1629 | CONFIG_SHARP_LQ64D341 |
1630 | 1630 | ||
1631 | Sharp LQ64D341 display, 640x480. | 1631 | Sharp LQ64D341 display, 640x480. |
1632 | Active, color, single scan. | 1632 | Active, color, single scan. |
1633 | 1633 | ||
1634 | CONFIG_HLD1045 | 1634 | CONFIG_HLD1045 |
1635 | 1635 | ||
1636 | HLD1045 display, 640x480. | 1636 | HLD1045 display, 640x480. |
1637 | Active, color, single scan. | 1637 | Active, color, single scan. |
1638 | 1638 | ||
1639 | CONFIG_OPTREX_BW | 1639 | CONFIG_OPTREX_BW |
1640 | 1640 | ||
1641 | Optrex CBL50840-2 NF-FW 99 22 M5 | 1641 | Optrex CBL50840-2 NF-FW 99 22 M5 |
1642 | or | 1642 | or |
1643 | Hitachi LMG6912RPFC-00T | 1643 | Hitachi LMG6912RPFC-00T |
1644 | or | 1644 | or |
1645 | Hitachi SP14Q002 | 1645 | Hitachi SP14Q002 |
1646 | 1646 | ||
1647 | 320x240. Black & white. | 1647 | 320x240. Black & white. |
1648 | 1648 | ||
1649 | Normally display is black on white background; define | 1649 | Normally display is black on white background; define |
1650 | CONFIG_SYS_WHITE_ON_BLACK to get it inverted. | 1650 | CONFIG_SYS_WHITE_ON_BLACK to get it inverted. |
1651 | 1651 | ||
1652 | CONFIG_LCD_ALIGNMENT | 1652 | CONFIG_LCD_ALIGNMENT |
1653 | 1653 | ||
1654 | Normally the LCD is page-aligned (tyically 4KB). If this is | 1654 | Normally the LCD is page-aligned (tyically 4KB). If this is |
1655 | defined then the LCD will be aligned to this value instead. | 1655 | defined then the LCD will be aligned to this value instead. |
1656 | For ARM it is sometimes useful to use MMU_SECTION_SIZE | 1656 | For ARM it is sometimes useful to use MMU_SECTION_SIZE |
1657 | here, since it is cheaper to change data cache settings on | 1657 | here, since it is cheaper to change data cache settings on |
1658 | a per-section basis. | 1658 | a per-section basis. |
1659 | 1659 | ||
1660 | CONFIG_CONSOLE_SCROLL_LINES | 1660 | CONFIG_CONSOLE_SCROLL_LINES |
1661 | 1661 | ||
1662 | When the console need to be scrolled, this is the number of | 1662 | When the console need to be scrolled, this is the number of |
1663 | lines to scroll by. It defaults to 1. Increasing this makes | 1663 | lines to scroll by. It defaults to 1. Increasing this makes |
1664 | the console jump but can help speed up operation when scrolling | 1664 | the console jump but can help speed up operation when scrolling |
1665 | is slow. | 1665 | is slow. |
1666 | 1666 | ||
1667 | CONFIG_LCD_BMP_RLE8 | 1667 | CONFIG_LCD_BMP_RLE8 |
1668 | 1668 | ||
1669 | Support drawing of RLE8-compressed bitmaps on the LCD. | 1669 | Support drawing of RLE8-compressed bitmaps on the LCD. |
1670 | 1670 | ||
1671 | CONFIG_I2C_EDID | 1671 | CONFIG_I2C_EDID |
1672 | 1672 | ||
1673 | Enables an 'i2c edid' command which can read EDID | 1673 | Enables an 'i2c edid' command which can read EDID |
1674 | information over I2C from an attached LCD display. | 1674 | information over I2C from an attached LCD display. |
1675 | 1675 | ||
1676 | - Splash Screen Support: CONFIG_SPLASH_SCREEN | 1676 | - Splash Screen Support: CONFIG_SPLASH_SCREEN |
1677 | 1677 | ||
1678 | If this option is set, the environment is checked for | 1678 | If this option is set, the environment is checked for |
1679 | a variable "splashimage". If found, the usual display | 1679 | a variable "splashimage". If found, the usual display |
1680 | of logo, copyright and system information on the LCD | 1680 | of logo, copyright and system information on the LCD |
1681 | is suppressed and the BMP image at the address | 1681 | is suppressed and the BMP image at the address |
1682 | specified in "splashimage" is loaded instead. The | 1682 | specified in "splashimage" is loaded instead. The |
1683 | console is redirected to the "nulldev", too. This | 1683 | console is redirected to the "nulldev", too. This |
1684 | allows for a "silent" boot where a splash screen is | 1684 | allows for a "silent" boot where a splash screen is |
1685 | loaded very quickly after power-on. | 1685 | loaded very quickly after power-on. |
1686 | 1686 | ||
1687 | CONFIG_SPLASHIMAGE_GUARD | 1687 | CONFIG_SPLASHIMAGE_GUARD |
1688 | 1688 | ||
1689 | If this option is set, then U-Boot will prevent the environment | 1689 | If this option is set, then U-Boot will prevent the environment |
1690 | variable "splashimage" from being set to a problematic address | 1690 | variable "splashimage" from being set to a problematic address |
1691 | (see README.displaying-bmps and README.arm-unaligned-accesses). | 1691 | (see README.displaying-bmps and README.arm-unaligned-accesses). |
1692 | This option is useful for targets where, due to alignment | 1692 | This option is useful for targets where, due to alignment |
1693 | restrictions, an improperly aligned BMP image will cause a data | 1693 | restrictions, an improperly aligned BMP image will cause a data |
1694 | abort. If you think you will not have problems with unaligned | 1694 | abort. If you think you will not have problems with unaligned |
1695 | accesses (for example because your toolchain prevents them) | 1695 | accesses (for example because your toolchain prevents them) |
1696 | there is no need to set this option. | 1696 | there is no need to set this option. |
1697 | 1697 | ||
1698 | CONFIG_SPLASH_SCREEN_ALIGN | 1698 | CONFIG_SPLASH_SCREEN_ALIGN |
1699 | 1699 | ||
1700 | If this option is set the splash image can be freely positioned | 1700 | If this option is set the splash image can be freely positioned |
1701 | on the screen. Environment variable "splashpos" specifies the | 1701 | on the screen. Environment variable "splashpos" specifies the |
1702 | position as "x,y". If a positive number is given it is used as | 1702 | position as "x,y". If a positive number is given it is used as |
1703 | number of pixel from left/top. If a negative number is given it | 1703 | number of pixel from left/top. If a negative number is given it |
1704 | is used as number of pixel from right/bottom. You can also | 1704 | is used as number of pixel from right/bottom. You can also |
1705 | specify 'm' for centering the image. | 1705 | specify 'm' for centering the image. |
1706 | 1706 | ||
1707 | Example: | 1707 | Example: |
1708 | setenv splashpos m,m | 1708 | setenv splashpos m,m |
1709 | => image at center of screen | 1709 | => image at center of screen |
1710 | 1710 | ||
1711 | setenv splashpos 30,20 | 1711 | setenv splashpos 30,20 |
1712 | => image at x = 30 and y = 20 | 1712 | => image at x = 30 and y = 20 |
1713 | 1713 | ||
1714 | setenv splashpos -10,m | 1714 | setenv splashpos -10,m |
1715 | => vertically centered image | 1715 | => vertically centered image |
1716 | at x = dspWidth - bmpWidth - 9 | 1716 | at x = dspWidth - bmpWidth - 9 |
1717 | 1717 | ||
1718 | - Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP | 1718 | - Gzip compressed BMP image support: CONFIG_VIDEO_BMP_GZIP |
1719 | 1719 | ||
1720 | If this option is set, additionally to standard BMP | 1720 | If this option is set, additionally to standard BMP |
1721 | images, gzipped BMP images can be displayed via the | 1721 | images, gzipped BMP images can be displayed via the |
1722 | splashscreen support or the bmp command. | 1722 | splashscreen support or the bmp command. |
1723 | 1723 | ||
1724 | - Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 | 1724 | - Run length encoded BMP image (RLE8) support: CONFIG_VIDEO_BMP_RLE8 |
1725 | 1725 | ||
1726 | If this option is set, 8-bit RLE compressed BMP images | 1726 | If this option is set, 8-bit RLE compressed BMP images |
1727 | can be displayed via the splashscreen support or the | 1727 | can be displayed via the splashscreen support or the |
1728 | bmp command. | 1728 | bmp command. |
1729 | 1729 | ||
1730 | - Do compresssing for memory range: | 1730 | - Do compresssing for memory range: |
1731 | CONFIG_CMD_ZIP | 1731 | CONFIG_CMD_ZIP |
1732 | 1732 | ||
1733 | If this option is set, it would use zlib deflate method | 1733 | If this option is set, it would use zlib deflate method |
1734 | to compress the specified memory at its best effort. | 1734 | to compress the specified memory at its best effort. |
1735 | 1735 | ||
1736 | - Compression support: | 1736 | - Compression support: |
1737 | CONFIG_GZIP | 1737 | CONFIG_GZIP |
1738 | 1738 | ||
1739 | Enabled by default to support gzip compressed images. | 1739 | Enabled by default to support gzip compressed images. |
1740 | 1740 | ||
1741 | CONFIG_BZIP2 | 1741 | CONFIG_BZIP2 |
1742 | 1742 | ||
1743 | If this option is set, support for bzip2 compressed | 1743 | If this option is set, support for bzip2 compressed |
1744 | images is included. If not, only uncompressed and gzip | 1744 | images is included. If not, only uncompressed and gzip |
1745 | compressed images are supported. | 1745 | compressed images are supported. |
1746 | 1746 | ||
1747 | NOTE: the bzip2 algorithm requires a lot of RAM, so | 1747 | NOTE: the bzip2 algorithm requires a lot of RAM, so |
1748 | the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should | 1748 | the malloc area (as defined by CONFIG_SYS_MALLOC_LEN) should |
1749 | be at least 4MB. | 1749 | be at least 4MB. |
1750 | 1750 | ||
1751 | CONFIG_LZMA | 1751 | CONFIG_LZMA |
1752 | 1752 | ||
1753 | If this option is set, support for lzma compressed | 1753 | If this option is set, support for lzma compressed |
1754 | images is included. | 1754 | images is included. |
1755 | 1755 | ||
1756 | Note: The LZMA algorithm adds between 2 and 4KB of code and it | 1756 | Note: The LZMA algorithm adds between 2 and 4KB of code and it |
1757 | requires an amount of dynamic memory that is given by the | 1757 | requires an amount of dynamic memory that is given by the |
1758 | formula: | 1758 | formula: |
1759 | 1759 | ||
1760 | (1846 + 768 << (lc + lp)) * sizeof(uint16) | 1760 | (1846 + 768 << (lc + lp)) * sizeof(uint16) |
1761 | 1761 | ||
1762 | Where lc and lp stand for, respectively, Literal context bits | 1762 | Where lc and lp stand for, respectively, Literal context bits |
1763 | and Literal pos bits. | 1763 | and Literal pos bits. |
1764 | 1764 | ||
1765 | This value is upper-bounded by 14MB in the worst case. Anyway, | 1765 | This value is upper-bounded by 14MB in the worst case. Anyway, |
1766 | for a ~4MB large kernel image, we have lc=3 and lp=0 for a | 1766 | for a ~4MB large kernel image, we have lc=3 and lp=0 for a |
1767 | total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is | 1767 | total amount of (1846 + 768 << (3 + 0)) * 2 = ~41KB... that is |
1768 | a very small buffer. | 1768 | a very small buffer. |
1769 | 1769 | ||
1770 | Use the lzmainfo tool to determinate the lc and lp values and | 1770 | Use the lzmainfo tool to determinate the lc and lp values and |
1771 | then calculate the amount of needed dynamic memory (ensuring | 1771 | then calculate the amount of needed dynamic memory (ensuring |
1772 | the appropriate CONFIG_SYS_MALLOC_LEN value). | 1772 | the appropriate CONFIG_SYS_MALLOC_LEN value). |
1773 | 1773 | ||
1774 | CONFIG_LZO | 1774 | CONFIG_LZO |
1775 | 1775 | ||
1776 | If this option is set, support for LZO compressed images | 1776 | If this option is set, support for LZO compressed images |
1777 | is included. | 1777 | is included. |
1778 | 1778 | ||
1779 | - MII/PHY support: | 1779 | - MII/PHY support: |
1780 | CONFIG_PHY_ADDR | 1780 | CONFIG_PHY_ADDR |
1781 | 1781 | ||
1782 | The address of PHY on MII bus. | 1782 | The address of PHY on MII bus. |
1783 | 1783 | ||
1784 | CONFIG_PHY_CLOCK_FREQ (ppc4xx) | 1784 | CONFIG_PHY_CLOCK_FREQ (ppc4xx) |
1785 | 1785 | ||
1786 | The clock frequency of the MII bus | 1786 | The clock frequency of the MII bus |
1787 | 1787 | ||
1788 | CONFIG_PHY_GIGE | 1788 | CONFIG_PHY_GIGE |
1789 | 1789 | ||
1790 | If this option is set, support for speed/duplex | 1790 | If this option is set, support for speed/duplex |
1791 | detection of gigabit PHY is included. | 1791 | detection of gigabit PHY is included. |
1792 | 1792 | ||
1793 | CONFIG_PHY_RESET_DELAY | 1793 | CONFIG_PHY_RESET_DELAY |
1794 | 1794 | ||
1795 | Some PHY like Intel LXT971A need extra delay after | 1795 | Some PHY like Intel LXT971A need extra delay after |
1796 | reset before any MII register access is possible. | 1796 | reset before any MII register access is possible. |
1797 | For such PHY, set this option to the usec delay | 1797 | For such PHY, set this option to the usec delay |
1798 | required. (minimum 300usec for LXT971A) | 1798 | required. (minimum 300usec for LXT971A) |
1799 | 1799 | ||
1800 | CONFIG_PHY_CMD_DELAY (ppc4xx) | 1800 | CONFIG_PHY_CMD_DELAY (ppc4xx) |
1801 | 1801 | ||
1802 | Some PHY like Intel LXT971A need extra delay after | 1802 | Some PHY like Intel LXT971A need extra delay after |
1803 | command issued before MII status register can be read | 1803 | command issued before MII status register can be read |
1804 | 1804 | ||
1805 | - Ethernet address: | 1805 | - Ethernet address: |
1806 | CONFIG_ETHADDR | 1806 | CONFIG_ETHADDR |
1807 | CONFIG_ETH1ADDR | 1807 | CONFIG_ETH1ADDR |
1808 | CONFIG_ETH2ADDR | 1808 | CONFIG_ETH2ADDR |
1809 | CONFIG_ETH3ADDR | 1809 | CONFIG_ETH3ADDR |
1810 | CONFIG_ETH4ADDR | 1810 | CONFIG_ETH4ADDR |
1811 | CONFIG_ETH5ADDR | 1811 | CONFIG_ETH5ADDR |
1812 | 1812 | ||
1813 | Define a default value for Ethernet address to use | 1813 | Define a default value for Ethernet address to use |
1814 | for the respective Ethernet interface, in case this | 1814 | for the respective Ethernet interface, in case this |
1815 | is not determined automatically. | 1815 | is not determined automatically. |
1816 | 1816 | ||
1817 | - IP address: | 1817 | - IP address: |
1818 | CONFIG_IPADDR | 1818 | CONFIG_IPADDR |
1819 | 1819 | ||
1820 | Define a default value for the IP address to use for | 1820 | Define a default value for the IP address to use for |
1821 | the default Ethernet interface, in case this is not | 1821 | the default Ethernet interface, in case this is not |
1822 | determined through e.g. bootp. | 1822 | determined through e.g. bootp. |
1823 | (Environment variable "ipaddr") | 1823 | (Environment variable "ipaddr") |
1824 | 1824 | ||
1825 | - Server IP address: | 1825 | - Server IP address: |
1826 | CONFIG_SERVERIP | 1826 | CONFIG_SERVERIP |
1827 | 1827 | ||
1828 | Defines a default value for the IP address of a TFTP | 1828 | Defines a default value for the IP address of a TFTP |
1829 | server to contact when using the "tftboot" command. | 1829 | server to contact when using the "tftboot" command. |
1830 | (Environment variable "serverip") | 1830 | (Environment variable "serverip") |
1831 | 1831 | ||
1832 | CONFIG_KEEP_SERVERADDR | 1832 | CONFIG_KEEP_SERVERADDR |
1833 | 1833 | ||
1834 | Keeps the server's MAC address, in the env 'serveraddr' | 1834 | Keeps the server's MAC address, in the env 'serveraddr' |
1835 | for passing to bootargs (like Linux's netconsole option) | 1835 | for passing to bootargs (like Linux's netconsole option) |
1836 | 1836 | ||
1837 | - Gateway IP address: | 1837 | - Gateway IP address: |
1838 | CONFIG_GATEWAYIP | 1838 | CONFIG_GATEWAYIP |
1839 | 1839 | ||
1840 | Defines a default value for the IP address of the | 1840 | Defines a default value for the IP address of the |
1841 | default router where packets to other networks are | 1841 | default router where packets to other networks are |
1842 | sent to. | 1842 | sent to. |
1843 | (Environment variable "gatewayip") | 1843 | (Environment variable "gatewayip") |
1844 | 1844 | ||
1845 | - Subnet mask: | 1845 | - Subnet mask: |
1846 | CONFIG_NETMASK | 1846 | CONFIG_NETMASK |
1847 | 1847 | ||
1848 | Defines a default value for the subnet mask (or | 1848 | Defines a default value for the subnet mask (or |
1849 | routing prefix) which is used to determine if an IP | 1849 | routing prefix) which is used to determine if an IP |
1850 | address belongs to the local subnet or needs to be | 1850 | address belongs to the local subnet or needs to be |
1851 | forwarded through a router. | 1851 | forwarded through a router. |
1852 | (Environment variable "netmask") | 1852 | (Environment variable "netmask") |
1853 | 1853 | ||
1854 | - Multicast TFTP Mode: | 1854 | - Multicast TFTP Mode: |
1855 | CONFIG_MCAST_TFTP | 1855 | CONFIG_MCAST_TFTP |
1856 | 1856 | ||
1857 | Defines whether you want to support multicast TFTP as per | 1857 | Defines whether you want to support multicast TFTP as per |
1858 | rfc-2090; for example to work with atftp. Lets lots of targets | 1858 | rfc-2090; for example to work with atftp. Lets lots of targets |
1859 | tftp down the same boot image concurrently. Note: the Ethernet | 1859 | tftp down the same boot image concurrently. Note: the Ethernet |
1860 | driver in use must provide a function: mcast() to join/leave a | 1860 | driver in use must provide a function: mcast() to join/leave a |
1861 | multicast group. | 1861 | multicast group. |
1862 | 1862 | ||
1863 | - BOOTP Recovery Mode: | 1863 | - BOOTP Recovery Mode: |
1864 | CONFIG_BOOTP_RANDOM_DELAY | 1864 | CONFIG_BOOTP_RANDOM_DELAY |
1865 | 1865 | ||
1866 | If you have many targets in a network that try to | 1866 | If you have many targets in a network that try to |
1867 | boot using BOOTP, you may want to avoid that all | 1867 | boot using BOOTP, you may want to avoid that all |
1868 | systems send out BOOTP requests at precisely the same | 1868 | systems send out BOOTP requests at precisely the same |
1869 | moment (which would happen for instance at recovery | 1869 | moment (which would happen for instance at recovery |
1870 | from a power failure, when all systems will try to | 1870 | from a power failure, when all systems will try to |
1871 | boot, thus flooding the BOOTP server. Defining | 1871 | boot, thus flooding the BOOTP server. Defining |
1872 | CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be | 1872 | CONFIG_BOOTP_RANDOM_DELAY causes a random delay to be |
1873 | inserted before sending out BOOTP requests. The | 1873 | inserted before sending out BOOTP requests. The |
1874 | following delays are inserted then: | 1874 | following delays are inserted then: |
1875 | 1875 | ||
1876 | 1st BOOTP request: delay 0 ... 1 sec | 1876 | 1st BOOTP request: delay 0 ... 1 sec |
1877 | 2nd BOOTP request: delay 0 ... 2 sec | 1877 | 2nd BOOTP request: delay 0 ... 2 sec |
1878 | 3rd BOOTP request: delay 0 ... 4 sec | 1878 | 3rd BOOTP request: delay 0 ... 4 sec |
1879 | 4th and following | 1879 | 4th and following |
1880 | BOOTP requests: delay 0 ... 8 sec | 1880 | BOOTP requests: delay 0 ... 8 sec |
1881 | 1881 | ||
1882 | - DHCP Advanced Options: | 1882 | - DHCP Advanced Options: |
1883 | You can fine tune the DHCP functionality by defining | 1883 | You can fine tune the DHCP functionality by defining |
1884 | CONFIG_BOOTP_* symbols: | 1884 | CONFIG_BOOTP_* symbols: |
1885 | 1885 | ||
1886 | CONFIG_BOOTP_SUBNETMASK | 1886 | CONFIG_BOOTP_SUBNETMASK |
1887 | CONFIG_BOOTP_GATEWAY | 1887 | CONFIG_BOOTP_GATEWAY |
1888 | CONFIG_BOOTP_HOSTNAME | 1888 | CONFIG_BOOTP_HOSTNAME |
1889 | CONFIG_BOOTP_NISDOMAIN | 1889 | CONFIG_BOOTP_NISDOMAIN |
1890 | CONFIG_BOOTP_BOOTPATH | 1890 | CONFIG_BOOTP_BOOTPATH |
1891 | CONFIG_BOOTP_BOOTFILESIZE | 1891 | CONFIG_BOOTP_BOOTFILESIZE |
1892 | CONFIG_BOOTP_DNS | 1892 | CONFIG_BOOTP_DNS |
1893 | CONFIG_BOOTP_DNS2 | 1893 | CONFIG_BOOTP_DNS2 |
1894 | CONFIG_BOOTP_SEND_HOSTNAME | 1894 | CONFIG_BOOTP_SEND_HOSTNAME |
1895 | CONFIG_BOOTP_NTPSERVER | 1895 | CONFIG_BOOTP_NTPSERVER |
1896 | CONFIG_BOOTP_TIMEOFFSET | 1896 | CONFIG_BOOTP_TIMEOFFSET |
1897 | CONFIG_BOOTP_VENDOREX | 1897 | CONFIG_BOOTP_VENDOREX |
1898 | CONFIG_BOOTP_MAY_FAIL | 1898 | CONFIG_BOOTP_MAY_FAIL |
1899 | 1899 | ||
1900 | CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip | 1900 | CONFIG_BOOTP_SERVERIP - TFTP server will be the serverip |
1901 | environment variable, not the BOOTP server. | 1901 | environment variable, not the BOOTP server. |
1902 | 1902 | ||
1903 | CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found | 1903 | CONFIG_BOOTP_MAY_FAIL - If the DHCP server is not found |
1904 | after the configured retry count, the call will fail | 1904 | after the configured retry count, the call will fail |
1905 | instead of starting over. This can be used to fail over | 1905 | instead of starting over. This can be used to fail over |
1906 | to Link-local IP address configuration if the DHCP server | 1906 | to Link-local IP address configuration if the DHCP server |
1907 | is not available. | 1907 | is not available. |
1908 | 1908 | ||
1909 | CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS | 1909 | CONFIG_BOOTP_DNS2 - If a DHCP client requests the DNS |
1910 | serverip from a DHCP server, it is possible that more | 1910 | serverip from a DHCP server, it is possible that more |
1911 | than one DNS serverip is offered to the client. | 1911 | than one DNS serverip is offered to the client. |
1912 | If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS | 1912 | If CONFIG_BOOTP_DNS2 is enabled, the secondary DNS |
1913 | serverip will be stored in the additional environment | 1913 | serverip will be stored in the additional environment |
1914 | variable "dnsip2". The first DNS serverip is always | 1914 | variable "dnsip2". The first DNS serverip is always |
1915 | stored in the variable "dnsip", when CONFIG_BOOTP_DNS | 1915 | stored in the variable "dnsip", when CONFIG_BOOTP_DNS |
1916 | is defined. | 1916 | is defined. |
1917 | 1917 | ||
1918 | CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable | 1918 | CONFIG_BOOTP_SEND_HOSTNAME - Some DHCP servers are capable |
1919 | to do a dynamic update of a DNS server. To do this, they | 1919 | to do a dynamic update of a DNS server. To do this, they |
1920 | need the hostname of the DHCP requester. | 1920 | need the hostname of the DHCP requester. |
1921 | If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content | 1921 | If CONFIG_BOOTP_SEND_HOSTNAME is defined, the content |
1922 | of the "hostname" environment variable is passed as | 1922 | of the "hostname" environment variable is passed as |
1923 | option 12 to the DHCP server. | 1923 | option 12 to the DHCP server. |
1924 | 1924 | ||
1925 | CONFIG_BOOTP_DHCP_REQUEST_DELAY | 1925 | CONFIG_BOOTP_DHCP_REQUEST_DELAY |
1926 | 1926 | ||
1927 | A 32bit value in microseconds for a delay between | 1927 | A 32bit value in microseconds for a delay between |
1928 | receiving a "DHCP Offer" and sending the "DHCP Request". | 1928 | receiving a "DHCP Offer" and sending the "DHCP Request". |
1929 | This fixes a problem with certain DHCP servers that don't | 1929 | This fixes a problem with certain DHCP servers that don't |
1930 | respond 100% of the time to a "DHCP request". E.g. On an | 1930 | respond 100% of the time to a "DHCP request". E.g. On an |
1931 | AT91RM9200 processor running at 180MHz, this delay needed | 1931 | AT91RM9200 processor running at 180MHz, this delay needed |
1932 | to be *at least* 15,000 usec before a Windows Server 2003 | 1932 | to be *at least* 15,000 usec before a Windows Server 2003 |
1933 | DHCP server would reply 100% of the time. I recommend at | 1933 | DHCP server would reply 100% of the time. I recommend at |
1934 | least 50,000 usec to be safe. The alternative is to hope | 1934 | least 50,000 usec to be safe. The alternative is to hope |
1935 | that one of the retries will be successful but note that | 1935 | that one of the retries will be successful but note that |
1936 | the DHCP timeout and retry process takes a longer than | 1936 | the DHCP timeout and retry process takes a longer than |
1937 | this delay. | 1937 | this delay. |
1938 | 1938 | ||
1939 | - Link-local IP address negotiation: | 1939 | - Link-local IP address negotiation: |
1940 | Negotiate with other link-local clients on the local network | 1940 | Negotiate with other link-local clients on the local network |
1941 | for an address that doesn't require explicit configuration. | 1941 | for an address that doesn't require explicit configuration. |
1942 | This is especially useful if a DHCP server cannot be guaranteed | 1942 | This is especially useful if a DHCP server cannot be guaranteed |
1943 | to exist in all environments that the device must operate. | 1943 | to exist in all environments that the device must operate. |
1944 | 1944 | ||
1945 | See doc/README.link-local for more information. | 1945 | See doc/README.link-local for more information. |
1946 | 1946 | ||
1947 | - CDP Options: | 1947 | - CDP Options: |
1948 | CONFIG_CDP_DEVICE_ID | 1948 | CONFIG_CDP_DEVICE_ID |
1949 | 1949 | ||
1950 | The device id used in CDP trigger frames. | 1950 | The device id used in CDP trigger frames. |
1951 | 1951 | ||
1952 | CONFIG_CDP_DEVICE_ID_PREFIX | 1952 | CONFIG_CDP_DEVICE_ID_PREFIX |
1953 | 1953 | ||
1954 | A two character string which is prefixed to the MAC address | 1954 | A two character string which is prefixed to the MAC address |
1955 | of the device. | 1955 | of the device. |
1956 | 1956 | ||
1957 | CONFIG_CDP_PORT_ID | 1957 | CONFIG_CDP_PORT_ID |
1958 | 1958 | ||
1959 | A printf format string which contains the ascii name of | 1959 | A printf format string which contains the ascii name of |
1960 | the port. Normally is set to "eth%d" which sets | 1960 | the port. Normally is set to "eth%d" which sets |
1961 | eth0 for the first Ethernet, eth1 for the second etc. | 1961 | eth0 for the first Ethernet, eth1 for the second etc. |
1962 | 1962 | ||
1963 | CONFIG_CDP_CAPABILITIES | 1963 | CONFIG_CDP_CAPABILITIES |
1964 | 1964 | ||
1965 | A 32bit integer which indicates the device capabilities; | 1965 | A 32bit integer which indicates the device capabilities; |
1966 | 0x00000010 for a normal host which does not forwards. | 1966 | 0x00000010 for a normal host which does not forwards. |
1967 | 1967 | ||
1968 | CONFIG_CDP_VERSION | 1968 | CONFIG_CDP_VERSION |
1969 | 1969 | ||
1970 | An ascii string containing the version of the software. | 1970 | An ascii string containing the version of the software. |
1971 | 1971 | ||
1972 | CONFIG_CDP_PLATFORM | 1972 | CONFIG_CDP_PLATFORM |
1973 | 1973 | ||
1974 | An ascii string containing the name of the platform. | 1974 | An ascii string containing the name of the platform. |
1975 | 1975 | ||
1976 | CONFIG_CDP_TRIGGER | 1976 | CONFIG_CDP_TRIGGER |
1977 | 1977 | ||
1978 | A 32bit integer sent on the trigger. | 1978 | A 32bit integer sent on the trigger. |
1979 | 1979 | ||
1980 | CONFIG_CDP_POWER_CONSUMPTION | 1980 | CONFIG_CDP_POWER_CONSUMPTION |
1981 | 1981 | ||
1982 | A 16bit integer containing the power consumption of the | 1982 | A 16bit integer containing the power consumption of the |
1983 | device in .1 of milliwatts. | 1983 | device in .1 of milliwatts. |
1984 | 1984 | ||
1985 | CONFIG_CDP_APPLIANCE_VLAN_TYPE | 1985 | CONFIG_CDP_APPLIANCE_VLAN_TYPE |
1986 | 1986 | ||
1987 | A byte containing the id of the VLAN. | 1987 | A byte containing the id of the VLAN. |
1988 | 1988 | ||
1989 | - Status LED: CONFIG_STATUS_LED | 1989 | - Status LED: CONFIG_STATUS_LED |
1990 | 1990 | ||
1991 | Several configurations allow to display the current | 1991 | Several configurations allow to display the current |
1992 | status using a LED. For instance, the LED will blink | 1992 | status using a LED. For instance, the LED will blink |
1993 | fast while running U-Boot code, stop blinking as | 1993 | fast while running U-Boot code, stop blinking as |
1994 | soon as a reply to a BOOTP request was received, and | 1994 | soon as a reply to a BOOTP request was received, and |
1995 | start blinking slow once the Linux kernel is running | 1995 | start blinking slow once the Linux kernel is running |
1996 | (supported by a status LED driver in the Linux | 1996 | (supported by a status LED driver in the Linux |
1997 | kernel). Defining CONFIG_STATUS_LED enables this | 1997 | kernel). Defining CONFIG_STATUS_LED enables this |
1998 | feature in U-Boot. | 1998 | feature in U-Boot. |
1999 | 1999 | ||
2000 | Additional options: | 2000 | Additional options: |
2001 | 2001 | ||
2002 | CONFIG_GPIO_LED | 2002 | CONFIG_GPIO_LED |
2003 | The status LED can be connected to a GPIO pin. | 2003 | The status LED can be connected to a GPIO pin. |
2004 | In such cases, the gpio_led driver can be used as a | 2004 | In such cases, the gpio_led driver can be used as a |
2005 | status LED backend implementation. Define CONFIG_GPIO_LED | 2005 | status LED backend implementation. Define CONFIG_GPIO_LED |
2006 | to include the gpio_led driver in the U-Boot binary. | 2006 | to include the gpio_led driver in the U-Boot binary. |
2007 | 2007 | ||
2008 | CONFIG_GPIO_LED_INVERTED_TABLE | 2008 | CONFIG_GPIO_LED_INVERTED_TABLE |
2009 | Some GPIO connected LEDs may have inverted polarity in which | 2009 | Some GPIO connected LEDs may have inverted polarity in which |
2010 | case the GPIO high value corresponds to LED off state and | 2010 | case the GPIO high value corresponds to LED off state and |
2011 | GPIO low value corresponds to LED on state. | 2011 | GPIO low value corresponds to LED on state. |
2012 | In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined | 2012 | In such cases CONFIG_GPIO_LED_INVERTED_TABLE may be defined |
2013 | with a list of GPIO LEDs that have inverted polarity. | 2013 | with a list of GPIO LEDs that have inverted polarity. |
2014 | 2014 | ||
2015 | - CAN Support: CONFIG_CAN_DRIVER | 2015 | - CAN Support: CONFIG_CAN_DRIVER |
2016 | 2016 | ||
2017 | Defining CONFIG_CAN_DRIVER enables CAN driver support | 2017 | Defining CONFIG_CAN_DRIVER enables CAN driver support |
2018 | on those systems that support this (optional) | 2018 | on those systems that support this (optional) |
2019 | feature, like the TQM8xxL modules. | 2019 | feature, like the TQM8xxL modules. |
2020 | 2020 | ||
2021 | - I2C Support: CONFIG_SYS_I2C | 2021 | - I2C Support: CONFIG_SYS_I2C |
2022 | 2022 | ||
2023 | This enable the NEW i2c subsystem, and will allow you to use | 2023 | This enable the NEW i2c subsystem, and will allow you to use |
2024 | i2c commands at the u-boot command line (as long as you set | 2024 | i2c commands at the u-boot command line (as long as you set |
2025 | CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c | 2025 | CONFIG_CMD_I2C in CONFIG_COMMANDS) and communicate with i2c |
2026 | based realtime clock chips or other i2c devices. See | 2026 | based realtime clock chips or other i2c devices. See |
2027 | common/cmd_i2c.c for a description of the command line | 2027 | common/cmd_i2c.c for a description of the command line |
2028 | interface. | 2028 | interface. |
2029 | 2029 | ||
2030 | ported i2c driver to the new framework: | 2030 | ported i2c driver to the new framework: |
2031 | - drivers/i2c/soft_i2c.c: | 2031 | - drivers/i2c/soft_i2c.c: |
2032 | - activate first bus with CONFIG_SYS_I2C_SOFT define | 2032 | - activate first bus with CONFIG_SYS_I2C_SOFT define |
2033 | CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE | 2033 | CONFIG_SYS_I2C_SOFT_SPEED and CONFIG_SYS_I2C_SOFT_SLAVE |
2034 | for defining speed and slave address | 2034 | for defining speed and slave address |
2035 | - activate second bus with I2C_SOFT_DECLARATIONS2 define | 2035 | - activate second bus with I2C_SOFT_DECLARATIONS2 define |
2036 | CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 | 2036 | CONFIG_SYS_I2C_SOFT_SPEED_2 and CONFIG_SYS_I2C_SOFT_SLAVE_2 |
2037 | for defining speed and slave address | 2037 | for defining speed and slave address |
2038 | - activate third bus with I2C_SOFT_DECLARATIONS3 define | 2038 | - activate third bus with I2C_SOFT_DECLARATIONS3 define |
2039 | CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 | 2039 | CONFIG_SYS_I2C_SOFT_SPEED_3 and CONFIG_SYS_I2C_SOFT_SLAVE_3 |
2040 | for defining speed and slave address | 2040 | for defining speed and slave address |
2041 | - activate fourth bus with I2C_SOFT_DECLARATIONS4 define | 2041 | - activate fourth bus with I2C_SOFT_DECLARATIONS4 define |
2042 | CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 | 2042 | CONFIG_SYS_I2C_SOFT_SPEED_4 and CONFIG_SYS_I2C_SOFT_SLAVE_4 |
2043 | for defining speed and slave address | 2043 | for defining speed and slave address |
2044 | 2044 | ||
2045 | - drivers/i2c/fsl_i2c.c: | 2045 | - drivers/i2c/fsl_i2c.c: |
2046 | - activate i2c driver with CONFIG_SYS_I2C_FSL | 2046 | - activate i2c driver with CONFIG_SYS_I2C_FSL |
2047 | define CONFIG_SYS_FSL_I2C_OFFSET for setting the register | 2047 | define CONFIG_SYS_FSL_I2C_OFFSET for setting the register |
2048 | offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and | 2048 | offset CONFIG_SYS_FSL_I2C_SPEED for the i2c speed and |
2049 | CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first | 2049 | CONFIG_SYS_FSL_I2C_SLAVE for the slave addr of the first |
2050 | bus. | 2050 | bus. |
2051 | - If your board supports a second fsl i2c bus, define | 2051 | - If your board supports a second fsl i2c bus, define |
2052 | CONFIG_SYS_FSL_I2C2_OFFSET for the register offset | 2052 | CONFIG_SYS_FSL_I2C2_OFFSET for the register offset |
2053 | CONFIG_SYS_FSL_I2C2_SPEED for the speed and | 2053 | CONFIG_SYS_FSL_I2C2_SPEED for the speed and |
2054 | CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the | 2054 | CONFIG_SYS_FSL_I2C2_SLAVE for the slave address of the |
2055 | second bus. | 2055 | second bus. |
2056 | 2056 | ||
2057 | - drivers/i2c/tegra_i2c.c: | 2057 | - drivers/i2c/tegra_i2c.c: |
2058 | - activate this driver with CONFIG_SYS_I2C_TEGRA | 2058 | - activate this driver with CONFIG_SYS_I2C_TEGRA |
2059 | - This driver adds 4 i2c buses with a fix speed from | 2059 | - This driver adds 4 i2c buses with a fix speed from |
2060 | 100000 and the slave addr 0! | 2060 | 100000 and the slave addr 0! |
2061 | 2061 | ||
2062 | - drivers/i2c/ppc4xx_i2c.c | 2062 | - drivers/i2c/ppc4xx_i2c.c |
2063 | - activate this driver with CONFIG_SYS_I2C_PPC4XX | 2063 | - activate this driver with CONFIG_SYS_I2C_PPC4XX |
2064 | - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 | 2064 | - CONFIG_SYS_I2C_PPC4XX_CH0 activate hardware channel 0 |
2065 | - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 | 2065 | - CONFIG_SYS_I2C_PPC4XX_CH1 activate hardware channel 1 |
2066 | 2066 | ||
2067 | - drivers/i2c/i2c_mxc.c | 2067 | - drivers/i2c/i2c_mxc.c |
2068 | - activate this driver with CONFIG_SYS_I2C_MXC | 2068 | - activate this driver with CONFIG_SYS_I2C_MXC |
2069 | - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED | 2069 | - define speed for bus 1 with CONFIG_SYS_MXC_I2C1_SPEED |
2070 | - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE | 2070 | - define slave for bus 1 with CONFIG_SYS_MXC_I2C1_SLAVE |
2071 | - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED | 2071 | - define speed for bus 2 with CONFIG_SYS_MXC_I2C2_SPEED |
2072 | - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE | 2072 | - define slave for bus 2 with CONFIG_SYS_MXC_I2C2_SLAVE |
2073 | - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED | 2073 | - define speed for bus 3 with CONFIG_SYS_MXC_I2C3_SPEED |
2074 | - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE | 2074 | - define slave for bus 3 with CONFIG_SYS_MXC_I2C3_SLAVE |
2075 | If thoses defines are not set, default value is 100000 | 2075 | If thoses defines are not set, default value is 100000 |
2076 | for speed, and 0 for slave. | 2076 | for speed, and 0 for slave. |
2077 | 2077 | ||
2078 | - drivers/i2c/rcar_i2c.c: | 2078 | - drivers/i2c/rcar_i2c.c: |
2079 | - activate this driver with CONFIG_SYS_I2C_RCAR | 2079 | - activate this driver with CONFIG_SYS_I2C_RCAR |
2080 | - This driver adds 4 i2c buses | 2080 | - This driver adds 4 i2c buses |
2081 | 2081 | ||
2082 | - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 | 2082 | - CONFIG_SYS_RCAR_I2C0_BASE for setting the register channel 0 |
2083 | - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 | 2083 | - CONFIG_SYS_RCAR_I2C0_SPEED for for the speed channel 0 |
2084 | - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 | 2084 | - CONFIG_SYS_RCAR_I2C1_BASE for setting the register channel 1 |
2085 | - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 | 2085 | - CONFIG_SYS_RCAR_I2C1_SPEED for for the speed channel 1 |
2086 | - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 | 2086 | - CONFIG_SYS_RCAR_I2C2_BASE for setting the register channel 2 |
2087 | - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 | 2087 | - CONFIG_SYS_RCAR_I2C2_SPEED for for the speed channel 2 |
2088 | - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 | 2088 | - CONFIG_SYS_RCAR_I2C3_BASE for setting the register channel 3 |
2089 | - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 | 2089 | - CONFIG_SYS_RCAR_I2C3_SPEED for for the speed channel 3 |
2090 | - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses | 2090 | - CONFIF_SYS_RCAR_I2C_NUM_CONTROLLERS for number of i2c buses |
2091 | 2091 | ||
2092 | - drivers/i2c/sh_i2c.c: | 2092 | - drivers/i2c/sh_i2c.c: |
2093 | - activate this driver with CONFIG_SYS_I2C_SH | 2093 | - activate this driver with CONFIG_SYS_I2C_SH |
2094 | - This driver adds from 2 to 5 i2c buses | 2094 | - This driver adds from 2 to 5 i2c buses |
2095 | 2095 | ||
2096 | - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 | 2096 | - CONFIG_SYS_I2C_SH_BASE0 for setting the register channel 0 |
2097 | - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 | 2097 | - CONFIG_SYS_I2C_SH_SPEED0 for for the speed channel 0 |
2098 | - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 | 2098 | - CONFIG_SYS_I2C_SH_BASE1 for setting the register channel 1 |
2099 | - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 | 2099 | - CONFIG_SYS_I2C_SH_SPEED1 for for the speed channel 1 |
2100 | - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 | 2100 | - CONFIG_SYS_I2C_SH_BASE2 for setting the register channel 2 |
2101 | - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 | 2101 | - CONFIG_SYS_I2C_SH_SPEED2 for for the speed channel 2 |
2102 | - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 | 2102 | - CONFIG_SYS_I2C_SH_BASE3 for setting the register channel 3 |
2103 | - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 | 2103 | - CONFIG_SYS_I2C_SH_SPEED3 for for the speed channel 3 |
2104 | - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 | 2104 | - CONFIG_SYS_I2C_SH_BASE4 for setting the register channel 4 |
2105 | - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 | 2105 | - CONFIG_SYS_I2C_SH_SPEED4 for for the speed channel 4 |
2106 | - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 | 2106 | - CONFIG_SYS_I2C_SH_BASE5 for setting the register channel 5 |
2107 | - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 | 2107 | - CONFIG_SYS_I2C_SH_SPEED5 for for the speed channel 5 |
2108 | - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses | 2108 | - CONFIF_SYS_I2C_SH_NUM_CONTROLLERS for nummber of i2c buses |
2109 | 2109 | ||
2110 | - drivers/i2c/omap24xx_i2c.c | 2110 | - drivers/i2c/omap24xx_i2c.c |
2111 | - activate this driver with CONFIG_SYS_I2C_OMAP24XX | 2111 | - activate this driver with CONFIG_SYS_I2C_OMAP24XX |
2112 | - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 | 2112 | - CONFIG_SYS_OMAP24_I2C_SPEED speed channel 0 |
2113 | - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 | 2113 | - CONFIG_SYS_OMAP24_I2C_SLAVE slave addr channel 0 |
2114 | - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 | 2114 | - CONFIG_SYS_OMAP24_I2C_SPEED1 speed channel 1 |
2115 | - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 | 2115 | - CONFIG_SYS_OMAP24_I2C_SLAVE1 slave addr channel 1 |
2116 | - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 | 2116 | - CONFIG_SYS_OMAP24_I2C_SPEED2 speed channel 2 |
2117 | - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 | 2117 | - CONFIG_SYS_OMAP24_I2C_SLAVE2 slave addr channel 2 |
2118 | - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 | 2118 | - CONFIG_SYS_OMAP24_I2C_SPEED3 speed channel 3 |
2119 | - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 | 2119 | - CONFIG_SYS_OMAP24_I2C_SLAVE3 slave addr channel 3 |
2120 | - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 | 2120 | - CONFIG_SYS_OMAP24_I2C_SPEED4 speed channel 4 |
2121 | - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 | 2121 | - CONFIG_SYS_OMAP24_I2C_SLAVE4 slave addr channel 4 |
2122 | 2122 | ||
2123 | - drivers/i2c/zynq_i2c.c | 2123 | - drivers/i2c/zynq_i2c.c |
2124 | - activate this driver with CONFIG_SYS_I2C_ZYNQ | 2124 | - activate this driver with CONFIG_SYS_I2C_ZYNQ |
2125 | - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting | 2125 | - set CONFIG_SYS_I2C_ZYNQ_SPEED for speed setting |
2126 | - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr | 2126 | - set CONFIG_SYS_I2C_ZYNQ_SLAVE for slave addr |
2127 | 2127 | ||
2128 | - drivers/i2c/s3c24x0_i2c.c: | ||
2129 | - activate this driver with CONFIG_SYS_I2C_S3C24X0 | ||
2130 | - This driver adds i2c buses (11 for Exynos5250, Exynos5420 | ||
2131 | 9 i2c buses for Exynos4 and 1 for S3C24X0 SoCs from Samsung) | ||
2132 | with a fix speed from 100000 and the slave addr 0! | ||
2133 | |||
2128 | additional defines: | 2134 | additional defines: |
2129 | 2135 | ||
2130 | CONFIG_SYS_NUM_I2C_BUSES | 2136 | CONFIG_SYS_NUM_I2C_BUSES |
2131 | Hold the number of i2c busses you want to use. If you | 2137 | Hold the number of i2c busses you want to use. If you |
2132 | don't use/have i2c muxes on your i2c bus, this | 2138 | don't use/have i2c muxes on your i2c bus, this |
2133 | is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can | 2139 | is equal to CONFIG_SYS_NUM_I2C_ADAPTERS, and you can |
2134 | omit this define. | 2140 | omit this define. |
2135 | 2141 | ||
2136 | CONFIG_SYS_I2C_DIRECT_BUS | 2142 | CONFIG_SYS_I2C_DIRECT_BUS |
2137 | define this, if you don't use i2c muxes on your hardware. | 2143 | define this, if you don't use i2c muxes on your hardware. |
2138 | if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can | 2144 | if CONFIG_SYS_I2C_MAX_HOPS is not defined or == 0 you can |
2139 | omit this define. | 2145 | omit this define. |
2140 | 2146 | ||
2141 | CONFIG_SYS_I2C_MAX_HOPS | 2147 | CONFIG_SYS_I2C_MAX_HOPS |
2142 | define how many muxes are maximal consecutively connected | 2148 | define how many muxes are maximal consecutively connected |
2143 | on one i2c bus. If you not use i2c muxes, omit this | 2149 | on one i2c bus. If you not use i2c muxes, omit this |
2144 | define. | 2150 | define. |
2145 | 2151 | ||
2146 | CONFIG_SYS_I2C_BUSES | 2152 | CONFIG_SYS_I2C_BUSES |
2147 | hold a list of busses you want to use, only used if | 2153 | hold a list of busses you want to use, only used if |
2148 | CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example | 2154 | CONFIG_SYS_I2C_DIRECT_BUS is not defined, for example |
2149 | a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and | 2155 | a board with CONFIG_SYS_I2C_MAX_HOPS = 1 and |
2150 | CONFIG_SYS_NUM_I2C_BUSES = 9: | 2156 | CONFIG_SYS_NUM_I2C_BUSES = 9: |
2151 | 2157 | ||
2152 | CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ | 2158 | CONFIG_SYS_I2C_BUSES {{0, {I2C_NULL_HOP}}, \ |
2153 | {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ | 2159 | {0, {{I2C_MUX_PCA9547, 0x70, 1}}}, \ |
2154 | {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ | 2160 | {0, {{I2C_MUX_PCA9547, 0x70, 2}}}, \ |
2155 | {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ | 2161 | {0, {{I2C_MUX_PCA9547, 0x70, 3}}}, \ |
2156 | {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ | 2162 | {0, {{I2C_MUX_PCA9547, 0x70, 4}}}, \ |
2157 | {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ | 2163 | {0, {{I2C_MUX_PCA9547, 0x70, 5}}}, \ |
2158 | {1, {I2C_NULL_HOP}}, \ | 2164 | {1, {I2C_NULL_HOP}}, \ |
2159 | {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ | 2165 | {1, {{I2C_MUX_PCA9544, 0x72, 1}}}, \ |
2160 | {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ | 2166 | {1, {{I2C_MUX_PCA9544, 0x72, 2}}}, \ |
2161 | } | 2167 | } |
2162 | 2168 | ||
2163 | which defines | 2169 | which defines |
2164 | bus 0 on adapter 0 without a mux | 2170 | bus 0 on adapter 0 without a mux |
2165 | bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 | 2171 | bus 1 on adapter 0 with a PCA9547 on address 0x70 port 1 |
2166 | bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 | 2172 | bus 2 on adapter 0 with a PCA9547 on address 0x70 port 2 |
2167 | bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 | 2173 | bus 3 on adapter 0 with a PCA9547 on address 0x70 port 3 |
2168 | bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 | 2174 | bus 4 on adapter 0 with a PCA9547 on address 0x70 port 4 |
2169 | bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 | 2175 | bus 5 on adapter 0 with a PCA9547 on address 0x70 port 5 |
2170 | bus 6 on adapter 1 without a mux | 2176 | bus 6 on adapter 1 without a mux |
2171 | bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 | 2177 | bus 7 on adapter 1 with a PCA9544 on address 0x72 port 1 |
2172 | bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 | 2178 | bus 8 on adapter 1 with a PCA9544 on address 0x72 port 2 |
2173 | 2179 | ||
2174 | If you do not have i2c muxes on your board, omit this define. | 2180 | If you do not have i2c muxes on your board, omit this define. |
2175 | 2181 | ||
2176 | - Legacy I2C Support: CONFIG_HARD_I2C | 2182 | - Legacy I2C Support: CONFIG_HARD_I2C |
2177 | 2183 | ||
2178 | NOTE: It is intended to move drivers to CONFIG_SYS_I2C which | 2184 | NOTE: It is intended to move drivers to CONFIG_SYS_I2C which |
2179 | provides the following compelling advantages: | 2185 | provides the following compelling advantages: |
2180 | 2186 | ||
2181 | - more than one i2c adapter is usable | 2187 | - more than one i2c adapter is usable |
2182 | - approved multibus support | 2188 | - approved multibus support |
2183 | - better i2c mux support | 2189 | - better i2c mux support |
2184 | 2190 | ||
2185 | ** Please consider updating your I2C driver now. ** | 2191 | ** Please consider updating your I2C driver now. ** |
2186 | 2192 | ||
2187 | These enable legacy I2C serial bus commands. Defining | 2193 | These enable legacy I2C serial bus commands. Defining |
2188 | CONFIG_HARD_I2C will include the appropriate I2C driver | 2194 | CONFIG_HARD_I2C will include the appropriate I2C driver |
2189 | for the selected CPU. | 2195 | for the selected CPU. |
2190 | 2196 | ||
2191 | This will allow you to use i2c commands at the u-boot | 2197 | This will allow you to use i2c commands at the u-boot |
2192 | command line (as long as you set CONFIG_CMD_I2C in | 2198 | command line (as long as you set CONFIG_CMD_I2C in |
2193 | CONFIG_COMMANDS) and communicate with i2c based realtime | 2199 | CONFIG_COMMANDS) and communicate with i2c based realtime |
2194 | clock chips. See common/cmd_i2c.c for a description of the | 2200 | clock chips. See common/cmd_i2c.c for a description of the |
2195 | command line interface. | 2201 | command line interface. |
2196 | 2202 | ||
2197 | CONFIG_HARD_I2C selects a hardware I2C controller. | 2203 | CONFIG_HARD_I2C selects a hardware I2C controller. |
2198 | 2204 | ||
2199 | There are several other quantities that must also be | 2205 | There are several other quantities that must also be |
2200 | defined when you define CONFIG_HARD_I2C. | 2206 | defined when you define CONFIG_HARD_I2C. |
2201 | 2207 | ||
2202 | In both cases you will need to define CONFIG_SYS_I2C_SPEED | 2208 | In both cases you will need to define CONFIG_SYS_I2C_SPEED |
2203 | to be the frequency (in Hz) at which you wish your i2c bus | 2209 | to be the frequency (in Hz) at which you wish your i2c bus |
2204 | to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie | 2210 | to run and CONFIG_SYS_I2C_SLAVE to be the address of this node (ie |
2205 | the CPU's i2c node address). | 2211 | the CPU's i2c node address). |
2206 | 2212 | ||
2207 | Now, the u-boot i2c code for the mpc8xx | 2213 | Now, the u-boot i2c code for the mpc8xx |
2208 | (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node | 2214 | (arch/powerpc/cpu/mpc8xx/i2c.c) sets the CPU up as a master node |
2209 | and so its address should therefore be cleared to 0 (See, | 2215 | and so its address should therefore be cleared to 0 (See, |
2210 | eg, MPC823e User's Manual p.16-473). So, set | 2216 | eg, MPC823e User's Manual p.16-473). So, set |
2211 | CONFIG_SYS_I2C_SLAVE to 0. | 2217 | CONFIG_SYS_I2C_SLAVE to 0. |
2212 | 2218 | ||
2213 | CONFIG_SYS_I2C_INIT_MPC5XXX | 2219 | CONFIG_SYS_I2C_INIT_MPC5XXX |
2214 | 2220 | ||
2215 | When a board is reset during an i2c bus transfer | 2221 | When a board is reset during an i2c bus transfer |
2216 | chips might think that the current transfer is still | 2222 | chips might think that the current transfer is still |
2217 | in progress. Reset the slave devices by sending start | 2223 | in progress. Reset the slave devices by sending start |
2218 | commands until the slave device responds. | 2224 | commands until the slave device responds. |
2219 | 2225 | ||
2220 | That's all that's required for CONFIG_HARD_I2C. | 2226 | That's all that's required for CONFIG_HARD_I2C. |
2221 | 2227 | ||
2222 | If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) | 2228 | If you use the software i2c interface (CONFIG_SYS_I2C_SOFT) |
2223 | then the following macros need to be defined (examples are | 2229 | then the following macros need to be defined (examples are |
2224 | from include/configs/lwmon.h): | 2230 | from include/configs/lwmon.h): |
2225 | 2231 | ||
2226 | I2C_INIT | 2232 | I2C_INIT |
2227 | 2233 | ||
2228 | (Optional). Any commands necessary to enable the I2C | 2234 | (Optional). Any commands necessary to enable the I2C |
2229 | controller or configure ports. | 2235 | controller or configure ports. |
2230 | 2236 | ||
2231 | eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) | 2237 | eg: #define I2C_INIT (immr->im_cpm.cp_pbdir |= PB_SCL) |
2232 | 2238 | ||
2233 | I2C_PORT | 2239 | I2C_PORT |
2234 | 2240 | ||
2235 | (Only for MPC8260 CPU). The I/O port to use (the code | 2241 | (Only for MPC8260 CPU). The I/O port to use (the code |
2236 | assumes both bits are on the same port). Valid values | 2242 | assumes both bits are on the same port). Valid values |
2237 | are 0..3 for ports A..D. | 2243 | are 0..3 for ports A..D. |
2238 | 2244 | ||
2239 | I2C_ACTIVE | 2245 | I2C_ACTIVE |
2240 | 2246 | ||
2241 | The code necessary to make the I2C data line active | 2247 | The code necessary to make the I2C data line active |
2242 | (driven). If the data line is open collector, this | 2248 | (driven). If the data line is open collector, this |
2243 | define can be null. | 2249 | define can be null. |
2244 | 2250 | ||
2245 | eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) | 2251 | eg: #define I2C_ACTIVE (immr->im_cpm.cp_pbdir |= PB_SDA) |
2246 | 2252 | ||
2247 | I2C_TRISTATE | 2253 | I2C_TRISTATE |
2248 | 2254 | ||
2249 | The code necessary to make the I2C data line tri-stated | 2255 | The code necessary to make the I2C data line tri-stated |
2250 | (inactive). If the data line is open collector, this | 2256 | (inactive). If the data line is open collector, this |
2251 | define can be null. | 2257 | define can be null. |
2252 | 2258 | ||
2253 | eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) | 2259 | eg: #define I2C_TRISTATE (immr->im_cpm.cp_pbdir &= ~PB_SDA) |
2254 | 2260 | ||
2255 | I2C_READ | 2261 | I2C_READ |
2256 | 2262 | ||
2257 | Code that returns true if the I2C data line is high, | 2263 | Code that returns true if the I2C data line is high, |
2258 | false if it is low. | 2264 | false if it is low. |
2259 | 2265 | ||
2260 | eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) | 2266 | eg: #define I2C_READ ((immr->im_cpm.cp_pbdat & PB_SDA) != 0) |
2261 | 2267 | ||
2262 | I2C_SDA(bit) | 2268 | I2C_SDA(bit) |
2263 | 2269 | ||
2264 | If <bit> is true, sets the I2C data line high. If it | 2270 | If <bit> is true, sets the I2C data line high. If it |
2265 | is false, it clears it (low). | 2271 | is false, it clears it (low). |
2266 | 2272 | ||
2267 | eg: #define I2C_SDA(bit) \ | 2273 | eg: #define I2C_SDA(bit) \ |
2268 | if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ | 2274 | if(bit) immr->im_cpm.cp_pbdat |= PB_SDA; \ |
2269 | else immr->im_cpm.cp_pbdat &= ~PB_SDA | 2275 | else immr->im_cpm.cp_pbdat &= ~PB_SDA |
2270 | 2276 | ||
2271 | I2C_SCL(bit) | 2277 | I2C_SCL(bit) |
2272 | 2278 | ||
2273 | If <bit> is true, sets the I2C clock line high. If it | 2279 | If <bit> is true, sets the I2C clock line high. If it |
2274 | is false, it clears it (low). | 2280 | is false, it clears it (low). |
2275 | 2281 | ||
2276 | eg: #define I2C_SCL(bit) \ | 2282 | eg: #define I2C_SCL(bit) \ |
2277 | if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ | 2283 | if(bit) immr->im_cpm.cp_pbdat |= PB_SCL; \ |
2278 | else immr->im_cpm.cp_pbdat &= ~PB_SCL | 2284 | else immr->im_cpm.cp_pbdat &= ~PB_SCL |
2279 | 2285 | ||
2280 | I2C_DELAY | 2286 | I2C_DELAY |
2281 | 2287 | ||
2282 | This delay is invoked four times per clock cycle so this | 2288 | This delay is invoked four times per clock cycle so this |
2283 | controls the rate of data transfer. The data rate thus | 2289 | controls the rate of data transfer. The data rate thus |
2284 | is 1 / (I2C_DELAY * 4). Often defined to be something | 2290 | is 1 / (I2C_DELAY * 4). Often defined to be something |
2285 | like: | 2291 | like: |
2286 | 2292 | ||
2287 | #define I2C_DELAY udelay(2) | 2293 | #define I2C_DELAY udelay(2) |
2288 | 2294 | ||
2289 | CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA | 2295 | CONFIG_SOFT_I2C_GPIO_SCL / CONFIG_SOFT_I2C_GPIO_SDA |
2290 | 2296 | ||
2291 | If your arch supports the generic GPIO framework (asm/gpio.h), | 2297 | If your arch supports the generic GPIO framework (asm/gpio.h), |
2292 | then you may alternatively define the two GPIOs that are to be | 2298 | then you may alternatively define the two GPIOs that are to be |
2293 | used as SCL / SDA. Any of the previous I2C_xxx macros will | 2299 | used as SCL / SDA. Any of the previous I2C_xxx macros will |
2294 | have GPIO-based defaults assigned to them as appropriate. | 2300 | have GPIO-based defaults assigned to them as appropriate. |
2295 | 2301 | ||
2296 | You should define these to the GPIO value as given directly to | 2302 | You should define these to the GPIO value as given directly to |
2297 | the generic GPIO functions. | 2303 | the generic GPIO functions. |
2298 | 2304 | ||
2299 | CONFIG_SYS_I2C_INIT_BOARD | 2305 | CONFIG_SYS_I2C_INIT_BOARD |
2300 | 2306 | ||
2301 | When a board is reset during an i2c bus transfer | 2307 | When a board is reset during an i2c bus transfer |
2302 | chips might think that the current transfer is still | 2308 | chips might think that the current transfer is still |
2303 | in progress. On some boards it is possible to access | 2309 | in progress. On some boards it is possible to access |
2304 | the i2c SCLK line directly, either by using the | 2310 | the i2c SCLK line directly, either by using the |
2305 | processor pin as a GPIO or by having a second pin | 2311 | processor pin as a GPIO or by having a second pin |
2306 | connected to the bus. If this option is defined a | 2312 | connected to the bus. If this option is defined a |
2307 | custom i2c_init_board() routine in boards/xxx/board.c | 2313 | custom i2c_init_board() routine in boards/xxx/board.c |
2308 | is run early in the boot sequence. | 2314 | is run early in the boot sequence. |
2309 | 2315 | ||
2310 | CONFIG_SYS_I2C_BOARD_LATE_INIT | 2316 | CONFIG_SYS_I2C_BOARD_LATE_INIT |
2311 | 2317 | ||
2312 | An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is | 2318 | An alternative to CONFIG_SYS_I2C_INIT_BOARD. If this option is |
2313 | defined a custom i2c_board_late_init() routine in | 2319 | defined a custom i2c_board_late_init() routine in |
2314 | boards/xxx/board.c is run AFTER the operations in i2c_init() | 2320 | boards/xxx/board.c is run AFTER the operations in i2c_init() |
2315 | is completed. This callpoint can be used to unreset i2c bus | 2321 | is completed. This callpoint can be used to unreset i2c bus |
2316 | using CPU i2c controller register accesses for CPUs whose i2c | 2322 | using CPU i2c controller register accesses for CPUs whose i2c |
2317 | controller provide such a method. It is called at the end of | 2323 | controller provide such a method. It is called at the end of |
2318 | i2c_init() to allow i2c_init operations to setup the i2c bus | 2324 | i2c_init() to allow i2c_init operations to setup the i2c bus |
2319 | controller on the CPU (e.g. setting bus speed & slave address). | 2325 | controller on the CPU (e.g. setting bus speed & slave address). |
2320 | 2326 | ||
2321 | CONFIG_I2CFAST (PPC405GP|PPC405EP only) | 2327 | CONFIG_I2CFAST (PPC405GP|PPC405EP only) |
2322 | 2328 | ||
2323 | This option enables configuration of bi_iic_fast[] flags | 2329 | This option enables configuration of bi_iic_fast[] flags |
2324 | in u-boot bd_info structure based on u-boot environment | 2330 | in u-boot bd_info structure based on u-boot environment |
2325 | variable "i2cfast". (see also i2cfast) | 2331 | variable "i2cfast". (see also i2cfast) |
2326 | 2332 | ||
2327 | CONFIG_I2C_MULTI_BUS | 2333 | CONFIG_I2C_MULTI_BUS |
2328 | 2334 | ||
2329 | This option allows the use of multiple I2C buses, each of which | 2335 | This option allows the use of multiple I2C buses, each of which |
2330 | must have a controller. At any point in time, only one bus is | 2336 | must have a controller. At any point in time, only one bus is |
2331 | active. To switch to a different bus, use the 'i2c dev' command. | 2337 | active. To switch to a different bus, use the 'i2c dev' command. |
2332 | Note that bus numbering is zero-based. | 2338 | Note that bus numbering is zero-based. |
2333 | 2339 | ||
2334 | CONFIG_SYS_I2C_NOPROBES | 2340 | CONFIG_SYS_I2C_NOPROBES |
2335 | 2341 | ||
2336 | This option specifies a list of I2C devices that will be skipped | 2342 | This option specifies a list of I2C devices that will be skipped |
2337 | when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS | 2343 | when the 'i2c probe' command is issued. If CONFIG_I2C_MULTI_BUS |
2338 | is set, specify a list of bus-device pairs. Otherwise, specify | 2344 | is set, specify a list of bus-device pairs. Otherwise, specify |
2339 | a 1D array of device addresses | 2345 | a 1D array of device addresses |
2340 | 2346 | ||
2341 | e.g. | 2347 | e.g. |
2342 | #undef CONFIG_I2C_MULTI_BUS | 2348 | #undef CONFIG_I2C_MULTI_BUS |
2343 | #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} | 2349 | #define CONFIG_SYS_I2C_NOPROBES {0x50,0x68} |
2344 | 2350 | ||
2345 | will skip addresses 0x50 and 0x68 on a board with one I2C bus | 2351 | will skip addresses 0x50 and 0x68 on a board with one I2C bus |
2346 | 2352 | ||
2347 | #define CONFIG_I2C_MULTI_BUS | 2353 | #define CONFIG_I2C_MULTI_BUS |
2348 | #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} | 2354 | #define CONFIG_SYS_I2C_MULTI_NOPROBES {{0,0x50},{0,0x68},{1,0x54}} |
2349 | 2355 | ||
2350 | will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 | 2356 | will skip addresses 0x50 and 0x68 on bus 0 and address 0x54 on bus 1 |
2351 | 2357 | ||
2352 | CONFIG_SYS_SPD_BUS_NUM | 2358 | CONFIG_SYS_SPD_BUS_NUM |
2353 | 2359 | ||
2354 | If defined, then this indicates the I2C bus number for DDR SPD. | 2360 | If defined, then this indicates the I2C bus number for DDR SPD. |
2355 | If not defined, then U-Boot assumes that SPD is on I2C bus 0. | 2361 | If not defined, then U-Boot assumes that SPD is on I2C bus 0. |
2356 | 2362 | ||
2357 | CONFIG_SYS_RTC_BUS_NUM | 2363 | CONFIG_SYS_RTC_BUS_NUM |
2358 | 2364 | ||
2359 | If defined, then this indicates the I2C bus number for the RTC. | 2365 | If defined, then this indicates the I2C bus number for the RTC. |
2360 | If not defined, then U-Boot assumes that RTC is on I2C bus 0. | 2366 | If not defined, then U-Boot assumes that RTC is on I2C bus 0. |
2361 | 2367 | ||
2362 | CONFIG_SYS_DTT_BUS_NUM | 2368 | CONFIG_SYS_DTT_BUS_NUM |
2363 | 2369 | ||
2364 | If defined, then this indicates the I2C bus number for the DTT. | 2370 | If defined, then this indicates the I2C bus number for the DTT. |
2365 | If not defined, then U-Boot assumes that DTT is on I2C bus 0. | 2371 | If not defined, then U-Boot assumes that DTT is on I2C bus 0. |
2366 | 2372 | ||
2367 | CONFIG_SYS_I2C_DTT_ADDR: | 2373 | CONFIG_SYS_I2C_DTT_ADDR: |
2368 | 2374 | ||
2369 | If defined, specifies the I2C address of the DTT device. | 2375 | If defined, specifies the I2C address of the DTT device. |
2370 | If not defined, then U-Boot uses predefined value for | 2376 | If not defined, then U-Boot uses predefined value for |
2371 | specified DTT device. | 2377 | specified DTT device. |
2372 | 2378 | ||
2373 | CONFIG_SOFT_I2C_READ_REPEATED_START | 2379 | CONFIG_SOFT_I2C_READ_REPEATED_START |
2374 | 2380 | ||
2375 | defining this will force the i2c_read() function in | 2381 | defining this will force the i2c_read() function in |
2376 | the soft_i2c driver to perform an I2C repeated start | 2382 | the soft_i2c driver to perform an I2C repeated start |
2377 | between writing the address pointer and reading the | 2383 | between writing the address pointer and reading the |
2378 | data. If this define is omitted the default behaviour | 2384 | data. If this define is omitted the default behaviour |
2379 | of doing a stop-start sequence will be used. Most I2C | 2385 | of doing a stop-start sequence will be used. Most I2C |
2380 | devices can use either method, but some require one or | 2386 | devices can use either method, but some require one or |
2381 | the other. | 2387 | the other. |
2382 | 2388 | ||
2383 | - SPI Support: CONFIG_SPI | 2389 | - SPI Support: CONFIG_SPI |
2384 | 2390 | ||
2385 | Enables SPI driver (so far only tested with | 2391 | Enables SPI driver (so far only tested with |
2386 | SPI EEPROM, also an instance works with Crystal A/D and | 2392 | SPI EEPROM, also an instance works with Crystal A/D and |
2387 | D/As on the SACSng board) | 2393 | D/As on the SACSng board) |
2388 | 2394 | ||
2389 | CONFIG_SH_SPI | 2395 | CONFIG_SH_SPI |
2390 | 2396 | ||
2391 | Enables the driver for SPI controller on SuperH. Currently | 2397 | Enables the driver for SPI controller on SuperH. Currently |
2392 | only SH7757 is supported. | 2398 | only SH7757 is supported. |
2393 | 2399 | ||
2394 | CONFIG_SPI_X | 2400 | CONFIG_SPI_X |
2395 | 2401 | ||
2396 | Enables extended (16-bit) SPI EEPROM addressing. | 2402 | Enables extended (16-bit) SPI EEPROM addressing. |
2397 | (symmetrical to CONFIG_I2C_X) | 2403 | (symmetrical to CONFIG_I2C_X) |
2398 | 2404 | ||
2399 | CONFIG_SOFT_SPI | 2405 | CONFIG_SOFT_SPI |
2400 | 2406 | ||
2401 | Enables a software (bit-bang) SPI driver rather than | 2407 | Enables a software (bit-bang) SPI driver rather than |
2402 | using hardware support. This is a general purpose | 2408 | using hardware support. This is a general purpose |
2403 | driver that only requires three general I/O port pins | 2409 | driver that only requires three general I/O port pins |
2404 | (two outputs, one input) to function. If this is | 2410 | (two outputs, one input) to function. If this is |
2405 | defined, the board configuration must define several | 2411 | defined, the board configuration must define several |
2406 | SPI configuration items (port pins to use, etc). For | 2412 | SPI configuration items (port pins to use, etc). For |
2407 | an example, see include/configs/sacsng.h. | 2413 | an example, see include/configs/sacsng.h. |
2408 | 2414 | ||
2409 | CONFIG_HARD_SPI | 2415 | CONFIG_HARD_SPI |
2410 | 2416 | ||
2411 | Enables a hardware SPI driver for general-purpose reads | 2417 | Enables a hardware SPI driver for general-purpose reads |
2412 | and writes. As with CONFIG_SOFT_SPI, the board configuration | 2418 | and writes. As with CONFIG_SOFT_SPI, the board configuration |
2413 | must define a list of chip-select function pointers. | 2419 | must define a list of chip-select function pointers. |
2414 | Currently supported on some MPC8xxx processors. For an | 2420 | Currently supported on some MPC8xxx processors. For an |
2415 | example, see include/configs/mpc8349emds.h. | 2421 | example, see include/configs/mpc8349emds.h. |
2416 | 2422 | ||
2417 | CONFIG_MXC_SPI | 2423 | CONFIG_MXC_SPI |
2418 | 2424 | ||
2419 | Enables the driver for the SPI controllers on i.MX and MXC | 2425 | Enables the driver for the SPI controllers on i.MX and MXC |
2420 | SoCs. Currently i.MX31/35/51 are supported. | 2426 | SoCs. Currently i.MX31/35/51 are supported. |
2421 | 2427 | ||
2422 | - FPGA Support: CONFIG_FPGA | 2428 | - FPGA Support: CONFIG_FPGA |
2423 | 2429 | ||
2424 | Enables FPGA subsystem. | 2430 | Enables FPGA subsystem. |
2425 | 2431 | ||
2426 | CONFIG_FPGA_<vendor> | 2432 | CONFIG_FPGA_<vendor> |
2427 | 2433 | ||
2428 | Enables support for specific chip vendors. | 2434 | Enables support for specific chip vendors. |
2429 | (ALTERA, XILINX) | 2435 | (ALTERA, XILINX) |
2430 | 2436 | ||
2431 | CONFIG_FPGA_<family> | 2437 | CONFIG_FPGA_<family> |
2432 | 2438 | ||
2433 | Enables support for FPGA family. | 2439 | Enables support for FPGA family. |
2434 | (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) | 2440 | (SPARTAN2, SPARTAN3, VIRTEX2, CYCLONE2, ACEX1K, ACEX) |
2435 | 2441 | ||
2436 | CONFIG_FPGA_COUNT | 2442 | CONFIG_FPGA_COUNT |
2437 | 2443 | ||
2438 | Specify the number of FPGA devices to support. | 2444 | Specify the number of FPGA devices to support. |
2439 | 2445 | ||
2440 | CONFIG_SYS_FPGA_PROG_FEEDBACK | 2446 | CONFIG_SYS_FPGA_PROG_FEEDBACK |
2441 | 2447 | ||
2442 | Enable printing of hash marks during FPGA configuration. | 2448 | Enable printing of hash marks during FPGA configuration. |
2443 | 2449 | ||
2444 | CONFIG_SYS_FPGA_CHECK_BUSY | 2450 | CONFIG_SYS_FPGA_CHECK_BUSY |
2445 | 2451 | ||
2446 | Enable checks on FPGA configuration interface busy | 2452 | Enable checks on FPGA configuration interface busy |
2447 | status by the configuration function. This option | 2453 | status by the configuration function. This option |
2448 | will require a board or device specific function to | 2454 | will require a board or device specific function to |
2449 | be written. | 2455 | be written. |
2450 | 2456 | ||
2451 | CONFIG_FPGA_DELAY | 2457 | CONFIG_FPGA_DELAY |
2452 | 2458 | ||
2453 | If defined, a function that provides delays in the FPGA | 2459 | If defined, a function that provides delays in the FPGA |
2454 | configuration driver. | 2460 | configuration driver. |
2455 | 2461 | ||
2456 | CONFIG_SYS_FPGA_CHECK_CTRLC | 2462 | CONFIG_SYS_FPGA_CHECK_CTRLC |
2457 | Allow Control-C to interrupt FPGA configuration | 2463 | Allow Control-C to interrupt FPGA configuration |
2458 | 2464 | ||
2459 | CONFIG_SYS_FPGA_CHECK_ERROR | 2465 | CONFIG_SYS_FPGA_CHECK_ERROR |
2460 | 2466 | ||
2461 | Check for configuration errors during FPGA bitfile | 2467 | Check for configuration errors during FPGA bitfile |
2462 | loading. For example, abort during Virtex II | 2468 | loading. For example, abort during Virtex II |
2463 | configuration if the INIT_B line goes low (which | 2469 | configuration if the INIT_B line goes low (which |
2464 | indicated a CRC error). | 2470 | indicated a CRC error). |
2465 | 2471 | ||
2466 | CONFIG_SYS_FPGA_WAIT_INIT | 2472 | CONFIG_SYS_FPGA_WAIT_INIT |
2467 | 2473 | ||
2468 | Maximum time to wait for the INIT_B line to deassert | 2474 | Maximum time to wait for the INIT_B line to deassert |
2469 | after PROB_B has been deasserted during a Virtex II | 2475 | after PROB_B has been deasserted during a Virtex II |
2470 | FPGA configuration sequence. The default time is 500 | 2476 | FPGA configuration sequence. The default time is 500 |
2471 | ms. | 2477 | ms. |
2472 | 2478 | ||
2473 | CONFIG_SYS_FPGA_WAIT_BUSY | 2479 | CONFIG_SYS_FPGA_WAIT_BUSY |
2474 | 2480 | ||
2475 | Maximum time to wait for BUSY to deassert during | 2481 | Maximum time to wait for BUSY to deassert during |
2476 | Virtex II FPGA configuration. The default is 5 ms. | 2482 | Virtex II FPGA configuration. The default is 5 ms. |
2477 | 2483 | ||
2478 | CONFIG_SYS_FPGA_WAIT_CONFIG | 2484 | CONFIG_SYS_FPGA_WAIT_CONFIG |
2479 | 2485 | ||
2480 | Time to wait after FPGA configuration. The default is | 2486 | Time to wait after FPGA configuration. The default is |
2481 | 200 ms. | 2487 | 200 ms. |
2482 | 2488 | ||
2483 | - Configuration Management: | 2489 | - Configuration Management: |
2484 | CONFIG_IDENT_STRING | 2490 | CONFIG_IDENT_STRING |
2485 | 2491 | ||
2486 | If defined, this string will be added to the U-Boot | 2492 | If defined, this string will be added to the U-Boot |
2487 | version information (U_BOOT_VERSION) | 2493 | version information (U_BOOT_VERSION) |
2488 | 2494 | ||
2489 | - Vendor Parameter Protection: | 2495 | - Vendor Parameter Protection: |
2490 | 2496 | ||
2491 | U-Boot considers the values of the environment | 2497 | U-Boot considers the values of the environment |
2492 | variables "serial#" (Board Serial Number) and | 2498 | variables "serial#" (Board Serial Number) and |
2493 | "ethaddr" (Ethernet Address) to be parameters that | 2499 | "ethaddr" (Ethernet Address) to be parameters that |
2494 | are set once by the board vendor / manufacturer, and | 2500 | are set once by the board vendor / manufacturer, and |
2495 | protects these variables from casual modification by | 2501 | protects these variables from casual modification by |
2496 | the user. Once set, these variables are read-only, | 2502 | the user. Once set, these variables are read-only, |
2497 | and write or delete attempts are rejected. You can | 2503 | and write or delete attempts are rejected. You can |
2498 | change this behaviour: | 2504 | change this behaviour: |
2499 | 2505 | ||
2500 | If CONFIG_ENV_OVERWRITE is #defined in your config | 2506 | If CONFIG_ENV_OVERWRITE is #defined in your config |
2501 | file, the write protection for vendor parameters is | 2507 | file, the write protection for vendor parameters is |
2502 | completely disabled. Anybody can change or delete | 2508 | completely disabled. Anybody can change or delete |
2503 | these parameters. | 2509 | these parameters. |
2504 | 2510 | ||
2505 | Alternatively, if you #define _both_ CONFIG_ETHADDR | 2511 | Alternatively, if you #define _both_ CONFIG_ETHADDR |
2506 | _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default | 2512 | _and_ CONFIG_OVERWRITE_ETHADDR_ONCE, a default |
2507 | Ethernet address is installed in the environment, | 2513 | Ethernet address is installed in the environment, |
2508 | which can be changed exactly ONCE by the user. [The | 2514 | which can be changed exactly ONCE by the user. [The |
2509 | serial# is unaffected by this, i. e. it remains | 2515 | serial# is unaffected by this, i. e. it remains |
2510 | read-only.] | 2516 | read-only.] |
2511 | 2517 | ||
2512 | The same can be accomplished in a more flexible way | 2518 | The same can be accomplished in a more flexible way |
2513 | for any variable by configuring the type of access | 2519 | for any variable by configuring the type of access |
2514 | to allow for those variables in the ".flags" variable | 2520 | to allow for those variables in the ".flags" variable |
2515 | or define CONFIG_ENV_FLAGS_LIST_STATIC. | 2521 | or define CONFIG_ENV_FLAGS_LIST_STATIC. |
2516 | 2522 | ||
2517 | - Protected RAM: | 2523 | - Protected RAM: |
2518 | CONFIG_PRAM | 2524 | CONFIG_PRAM |
2519 | 2525 | ||
2520 | Define this variable to enable the reservation of | 2526 | Define this variable to enable the reservation of |
2521 | "protected RAM", i. e. RAM which is not overwritten | 2527 | "protected RAM", i. e. RAM which is not overwritten |
2522 | by U-Boot. Define CONFIG_PRAM to hold the number of | 2528 | by U-Boot. Define CONFIG_PRAM to hold the number of |
2523 | kB you want to reserve for pRAM. You can overwrite | 2529 | kB you want to reserve for pRAM. You can overwrite |
2524 | this default value by defining an environment | 2530 | this default value by defining an environment |
2525 | variable "pram" to the number of kB you want to | 2531 | variable "pram" to the number of kB you want to |
2526 | reserve. Note that the board info structure will | 2532 | reserve. Note that the board info structure will |
2527 | still show the full amount of RAM. If pRAM is | 2533 | still show the full amount of RAM. If pRAM is |
2528 | reserved, a new environment variable "mem" will | 2534 | reserved, a new environment variable "mem" will |
2529 | automatically be defined to hold the amount of | 2535 | automatically be defined to hold the amount of |
2530 | remaining RAM in a form that can be passed as boot | 2536 | remaining RAM in a form that can be passed as boot |
2531 | argument to Linux, for instance like that: | 2537 | argument to Linux, for instance like that: |
2532 | 2538 | ||
2533 | setenv bootargs ... mem=\${mem} | 2539 | setenv bootargs ... mem=\${mem} |
2534 | saveenv | 2540 | saveenv |
2535 | 2541 | ||
2536 | This way you can tell Linux not to use this memory, | 2542 | This way you can tell Linux not to use this memory, |
2537 | either, which results in a memory region that will | 2543 | either, which results in a memory region that will |
2538 | not be affected by reboots. | 2544 | not be affected by reboots. |
2539 | 2545 | ||
2540 | *WARNING* If your board configuration uses automatic | 2546 | *WARNING* If your board configuration uses automatic |
2541 | detection of the RAM size, you must make sure that | 2547 | detection of the RAM size, you must make sure that |
2542 | this memory test is non-destructive. So far, the | 2548 | this memory test is non-destructive. So far, the |
2543 | following board configurations are known to be | 2549 | following board configurations are known to be |
2544 | "pRAM-clean": | 2550 | "pRAM-clean": |
2545 | 2551 | ||
2546 | IVMS8, IVML24, SPD8xx, TQM8xxL, | 2552 | IVMS8, IVML24, SPD8xx, TQM8xxL, |
2547 | HERMES, IP860, RPXlite, LWMON, | 2553 | HERMES, IP860, RPXlite, LWMON, |
2548 | FLAGADM, TQM8260 | 2554 | FLAGADM, TQM8260 |
2549 | 2555 | ||
2550 | - Access to physical memory region (> 4GB) | 2556 | - Access to physical memory region (> 4GB) |
2551 | Some basic support is provided for operations on memory not | 2557 | Some basic support is provided for operations on memory not |
2552 | normally accessible to U-Boot - e.g. some architectures | 2558 | normally accessible to U-Boot - e.g. some architectures |
2553 | support access to more than 4GB of memory on 32-bit | 2559 | support access to more than 4GB of memory on 32-bit |
2554 | machines using physical address extension or similar. | 2560 | machines using physical address extension or similar. |
2555 | Define CONFIG_PHYSMEM to access this basic support, which | 2561 | Define CONFIG_PHYSMEM to access this basic support, which |
2556 | currently only supports clearing the memory. | 2562 | currently only supports clearing the memory. |
2557 | 2563 | ||
2558 | - Error Recovery: | 2564 | - Error Recovery: |
2559 | CONFIG_PANIC_HANG | 2565 | CONFIG_PANIC_HANG |
2560 | 2566 | ||
2561 | Define this variable to stop the system in case of a | 2567 | Define this variable to stop the system in case of a |
2562 | fatal error, so that you have to reset it manually. | 2568 | fatal error, so that you have to reset it manually. |
2563 | This is probably NOT a good idea for an embedded | 2569 | This is probably NOT a good idea for an embedded |
2564 | system where you want the system to reboot | 2570 | system where you want the system to reboot |
2565 | automatically as fast as possible, but it may be | 2571 | automatically as fast as possible, but it may be |
2566 | useful during development since you can try to debug | 2572 | useful during development since you can try to debug |
2567 | the conditions that lead to the situation. | 2573 | the conditions that lead to the situation. |
2568 | 2574 | ||
2569 | CONFIG_NET_RETRY_COUNT | 2575 | CONFIG_NET_RETRY_COUNT |
2570 | 2576 | ||
2571 | This variable defines the number of retries for | 2577 | This variable defines the number of retries for |
2572 | network operations like ARP, RARP, TFTP, or BOOTP | 2578 | network operations like ARP, RARP, TFTP, or BOOTP |
2573 | before giving up the operation. If not defined, a | 2579 | before giving up the operation. If not defined, a |
2574 | default value of 5 is used. | 2580 | default value of 5 is used. |
2575 | 2581 | ||
2576 | CONFIG_ARP_TIMEOUT | 2582 | CONFIG_ARP_TIMEOUT |
2577 | 2583 | ||
2578 | Timeout waiting for an ARP reply in milliseconds. | 2584 | Timeout waiting for an ARP reply in milliseconds. |
2579 | 2585 | ||
2580 | CONFIG_NFS_TIMEOUT | 2586 | CONFIG_NFS_TIMEOUT |
2581 | 2587 | ||
2582 | Timeout in milliseconds used in NFS protocol. | 2588 | Timeout in milliseconds used in NFS protocol. |
2583 | If you encounter "ERROR: Cannot umount" in nfs command, | 2589 | If you encounter "ERROR: Cannot umount" in nfs command, |
2584 | try longer timeout such as | 2590 | try longer timeout such as |
2585 | #define CONFIG_NFS_TIMEOUT 10000UL | 2591 | #define CONFIG_NFS_TIMEOUT 10000UL |
2586 | 2592 | ||
2587 | - Command Interpreter: | 2593 | - Command Interpreter: |
2588 | CONFIG_AUTO_COMPLETE | 2594 | CONFIG_AUTO_COMPLETE |
2589 | 2595 | ||
2590 | Enable auto completion of commands using TAB. | 2596 | Enable auto completion of commands using TAB. |
2591 | 2597 | ||
2592 | Note that this feature has NOT been implemented yet | 2598 | Note that this feature has NOT been implemented yet |
2593 | for the "hush" shell. | 2599 | for the "hush" shell. |
2594 | 2600 | ||
2595 | 2601 | ||
2596 | CONFIG_SYS_HUSH_PARSER | 2602 | CONFIG_SYS_HUSH_PARSER |
2597 | 2603 | ||
2598 | Define this variable to enable the "hush" shell (from | 2604 | Define this variable to enable the "hush" shell (from |
2599 | Busybox) as command line interpreter, thus enabling | 2605 | Busybox) as command line interpreter, thus enabling |
2600 | powerful command line syntax like | 2606 | powerful command line syntax like |
2601 | if...then...else...fi conditionals or `&&' and '||' | 2607 | if...then...else...fi conditionals or `&&' and '||' |
2602 | constructs ("shell scripts"). | 2608 | constructs ("shell scripts"). |
2603 | 2609 | ||
2604 | If undefined, you get the old, much simpler behaviour | 2610 | If undefined, you get the old, much simpler behaviour |
2605 | with a somewhat smaller memory footprint. | 2611 | with a somewhat smaller memory footprint. |
2606 | 2612 | ||
2607 | 2613 | ||
2608 | CONFIG_SYS_PROMPT_HUSH_PS2 | 2614 | CONFIG_SYS_PROMPT_HUSH_PS2 |
2609 | 2615 | ||
2610 | This defines the secondary prompt string, which is | 2616 | This defines the secondary prompt string, which is |
2611 | printed when the command interpreter needs more input | 2617 | printed when the command interpreter needs more input |
2612 | to complete a command. Usually "> ". | 2618 | to complete a command. Usually "> ". |
2613 | 2619 | ||
2614 | Note: | 2620 | Note: |
2615 | 2621 | ||
2616 | In the current implementation, the local variables | 2622 | In the current implementation, the local variables |
2617 | space and global environment variables space are | 2623 | space and global environment variables space are |
2618 | separated. Local variables are those you define by | 2624 | separated. Local variables are those you define by |
2619 | simply typing `name=value'. To access a local | 2625 | simply typing `name=value'. To access a local |
2620 | variable later on, you have write `$name' or | 2626 | variable later on, you have write `$name' or |
2621 | `${name}'; to execute the contents of a variable | 2627 | `${name}'; to execute the contents of a variable |
2622 | directly type `$name' at the command prompt. | 2628 | directly type `$name' at the command prompt. |
2623 | 2629 | ||
2624 | Global environment variables are those you use | 2630 | Global environment variables are those you use |
2625 | setenv/printenv to work with. To run a command stored | 2631 | setenv/printenv to work with. To run a command stored |
2626 | in such a variable, you need to use the run command, | 2632 | in such a variable, you need to use the run command, |
2627 | and you must not use the '$' sign to access them. | 2633 | and you must not use the '$' sign to access them. |
2628 | 2634 | ||
2629 | To store commands and special characters in a | 2635 | To store commands and special characters in a |
2630 | variable, please use double quotation marks | 2636 | variable, please use double quotation marks |
2631 | surrounding the whole text of the variable, instead | 2637 | surrounding the whole text of the variable, instead |
2632 | of the backslashes before semicolons and special | 2638 | of the backslashes before semicolons and special |
2633 | symbols. | 2639 | symbols. |
2634 | 2640 | ||
2635 | - Commandline Editing and History: | 2641 | - Commandline Editing and History: |
2636 | CONFIG_CMDLINE_EDITING | 2642 | CONFIG_CMDLINE_EDITING |
2637 | 2643 | ||
2638 | Enable editing and History functions for interactive | 2644 | Enable editing and History functions for interactive |
2639 | commandline input operations | 2645 | commandline input operations |
2640 | 2646 | ||
2641 | - Default Environment: | 2647 | - Default Environment: |
2642 | CONFIG_EXTRA_ENV_SETTINGS | 2648 | CONFIG_EXTRA_ENV_SETTINGS |
2643 | 2649 | ||
2644 | Define this to contain any number of null terminated | 2650 | Define this to contain any number of null terminated |
2645 | strings (variable = value pairs) that will be part of | 2651 | strings (variable = value pairs) that will be part of |
2646 | the default environment compiled into the boot image. | 2652 | the default environment compiled into the boot image. |
2647 | 2653 | ||
2648 | For example, place something like this in your | 2654 | For example, place something like this in your |
2649 | board's config file: | 2655 | board's config file: |
2650 | 2656 | ||
2651 | #define CONFIG_EXTRA_ENV_SETTINGS \ | 2657 | #define CONFIG_EXTRA_ENV_SETTINGS \ |
2652 | "myvar1=value1\0" \ | 2658 | "myvar1=value1\0" \ |
2653 | "myvar2=value2\0" | 2659 | "myvar2=value2\0" |
2654 | 2660 | ||
2655 | Warning: This method is based on knowledge about the | 2661 | Warning: This method is based on knowledge about the |
2656 | internal format how the environment is stored by the | 2662 | internal format how the environment is stored by the |
2657 | U-Boot code. This is NOT an official, exported | 2663 | U-Boot code. This is NOT an official, exported |
2658 | interface! Although it is unlikely that this format | 2664 | interface! Although it is unlikely that this format |
2659 | will change soon, there is no guarantee either. | 2665 | will change soon, there is no guarantee either. |
2660 | You better know what you are doing here. | 2666 | You better know what you are doing here. |
2661 | 2667 | ||
2662 | Note: overly (ab)use of the default environment is | 2668 | Note: overly (ab)use of the default environment is |
2663 | discouraged. Make sure to check other ways to preset | 2669 | discouraged. Make sure to check other ways to preset |
2664 | the environment like the "source" command or the | 2670 | the environment like the "source" command or the |
2665 | boot command first. | 2671 | boot command first. |
2666 | 2672 | ||
2667 | CONFIG_ENV_VARS_UBOOT_CONFIG | 2673 | CONFIG_ENV_VARS_UBOOT_CONFIG |
2668 | 2674 | ||
2669 | Define this in order to add variables describing the | 2675 | Define this in order to add variables describing the |
2670 | U-Boot build configuration to the default environment. | 2676 | U-Boot build configuration to the default environment. |
2671 | These will be named arch, cpu, board, vendor, and soc. | 2677 | These will be named arch, cpu, board, vendor, and soc. |
2672 | 2678 | ||
2673 | Enabling this option will cause the following to be defined: | 2679 | Enabling this option will cause the following to be defined: |
2674 | 2680 | ||
2675 | - CONFIG_SYS_ARCH | 2681 | - CONFIG_SYS_ARCH |
2676 | - CONFIG_SYS_CPU | 2682 | - CONFIG_SYS_CPU |
2677 | - CONFIG_SYS_BOARD | 2683 | - CONFIG_SYS_BOARD |
2678 | - CONFIG_SYS_VENDOR | 2684 | - CONFIG_SYS_VENDOR |
2679 | - CONFIG_SYS_SOC | 2685 | - CONFIG_SYS_SOC |
2680 | 2686 | ||
2681 | CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG | 2687 | CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG |
2682 | 2688 | ||
2683 | Define this in order to add variables describing certain | 2689 | Define this in order to add variables describing certain |
2684 | run-time determined information about the hardware to the | 2690 | run-time determined information about the hardware to the |
2685 | environment. These will be named board_name, board_rev. | 2691 | environment. These will be named board_name, board_rev. |
2686 | 2692 | ||
2687 | CONFIG_DELAY_ENVIRONMENT | 2693 | CONFIG_DELAY_ENVIRONMENT |
2688 | 2694 | ||
2689 | Normally the environment is loaded when the board is | 2695 | Normally the environment is loaded when the board is |
2690 | intialised so that it is available to U-Boot. This inhibits | 2696 | intialised so that it is available to U-Boot. This inhibits |
2691 | that so that the environment is not available until | 2697 | that so that the environment is not available until |
2692 | explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL | 2698 | explicitly loaded later by U-Boot code. With CONFIG_OF_CONTROL |
2693 | this is instead controlled by the value of | 2699 | this is instead controlled by the value of |
2694 | /config/load-environment. | 2700 | /config/load-environment. |
2695 | 2701 | ||
2696 | - DataFlash Support: | 2702 | - DataFlash Support: |
2697 | CONFIG_HAS_DATAFLASH | 2703 | CONFIG_HAS_DATAFLASH |
2698 | 2704 | ||
2699 | Defining this option enables DataFlash features and | 2705 | Defining this option enables DataFlash features and |
2700 | allows to read/write in Dataflash via the standard | 2706 | allows to read/write in Dataflash via the standard |
2701 | commands cp, md... | 2707 | commands cp, md... |
2702 | 2708 | ||
2703 | - Serial Flash support | 2709 | - Serial Flash support |
2704 | CONFIG_CMD_SF | 2710 | CONFIG_CMD_SF |
2705 | 2711 | ||
2706 | Defining this option enables SPI flash commands | 2712 | Defining this option enables SPI flash commands |
2707 | 'sf probe/read/write/erase/update'. | 2713 | 'sf probe/read/write/erase/update'. |
2708 | 2714 | ||
2709 | Usage requires an initial 'probe' to define the serial | 2715 | Usage requires an initial 'probe' to define the serial |
2710 | flash parameters, followed by read/write/erase/update | 2716 | flash parameters, followed by read/write/erase/update |
2711 | commands. | 2717 | commands. |
2712 | 2718 | ||
2713 | The following defaults may be provided by the platform | 2719 | The following defaults may be provided by the platform |
2714 | to handle the common case when only a single serial | 2720 | to handle the common case when only a single serial |
2715 | flash is present on the system. | 2721 | flash is present on the system. |
2716 | 2722 | ||
2717 | CONFIG_SF_DEFAULT_BUS Bus identifier | 2723 | CONFIG_SF_DEFAULT_BUS Bus identifier |
2718 | CONFIG_SF_DEFAULT_CS Chip-select | 2724 | CONFIG_SF_DEFAULT_CS Chip-select |
2719 | CONFIG_SF_DEFAULT_MODE (see include/spi.h) | 2725 | CONFIG_SF_DEFAULT_MODE (see include/spi.h) |
2720 | CONFIG_SF_DEFAULT_SPEED in Hz | 2726 | CONFIG_SF_DEFAULT_SPEED in Hz |
2721 | 2727 | ||
2722 | CONFIG_CMD_SF_TEST | 2728 | CONFIG_CMD_SF_TEST |
2723 | 2729 | ||
2724 | Define this option to include a destructive SPI flash | 2730 | Define this option to include a destructive SPI flash |
2725 | test ('sf test'). | 2731 | test ('sf test'). |
2726 | 2732 | ||
2727 | CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg | 2733 | CONFIG_SPI_FLASH_BAR Ban/Extended Addr Reg |
2728 | 2734 | ||
2729 | Define this option to use the Bank addr/Extended addr | 2735 | Define this option to use the Bank addr/Extended addr |
2730 | support on SPI flashes which has size > 16Mbytes. | 2736 | support on SPI flashes which has size > 16Mbytes. |
2731 | 2737 | ||
2732 | - SystemACE Support: | 2738 | - SystemACE Support: |
2733 | CONFIG_SYSTEMACE | 2739 | CONFIG_SYSTEMACE |
2734 | 2740 | ||
2735 | Adding this option adds support for Xilinx SystemACE | 2741 | Adding this option adds support for Xilinx SystemACE |
2736 | chips attached via some sort of local bus. The address | 2742 | chips attached via some sort of local bus. The address |
2737 | of the chip must also be defined in the | 2743 | of the chip must also be defined in the |
2738 | CONFIG_SYS_SYSTEMACE_BASE macro. For example: | 2744 | CONFIG_SYS_SYSTEMACE_BASE macro. For example: |
2739 | 2745 | ||
2740 | #define CONFIG_SYSTEMACE | 2746 | #define CONFIG_SYSTEMACE |
2741 | #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 | 2747 | #define CONFIG_SYS_SYSTEMACE_BASE 0xf0000000 |
2742 | 2748 | ||
2743 | When SystemACE support is added, the "ace" device type | 2749 | When SystemACE support is added, the "ace" device type |
2744 | becomes available to the fat commands, i.e. fatls. | 2750 | becomes available to the fat commands, i.e. fatls. |
2745 | 2751 | ||
2746 | - TFTP Fixed UDP Port: | 2752 | - TFTP Fixed UDP Port: |
2747 | CONFIG_TFTP_PORT | 2753 | CONFIG_TFTP_PORT |
2748 | 2754 | ||
2749 | If this is defined, the environment variable tftpsrcp | 2755 | If this is defined, the environment variable tftpsrcp |
2750 | is used to supply the TFTP UDP source port value. | 2756 | is used to supply the TFTP UDP source port value. |
2751 | If tftpsrcp isn't defined, the normal pseudo-random port | 2757 | If tftpsrcp isn't defined, the normal pseudo-random port |
2752 | number generator is used. | 2758 | number generator is used. |
2753 | 2759 | ||
2754 | Also, the environment variable tftpdstp is used to supply | 2760 | Also, the environment variable tftpdstp is used to supply |
2755 | the TFTP UDP destination port value. If tftpdstp isn't | 2761 | the TFTP UDP destination port value. If tftpdstp isn't |
2756 | defined, the normal port 69 is used. | 2762 | defined, the normal port 69 is used. |
2757 | 2763 | ||
2758 | The purpose for tftpsrcp is to allow a TFTP server to | 2764 | The purpose for tftpsrcp is to allow a TFTP server to |
2759 | blindly start the TFTP transfer using the pre-configured | 2765 | blindly start the TFTP transfer using the pre-configured |
2760 | target IP address and UDP port. This has the effect of | 2766 | target IP address and UDP port. This has the effect of |
2761 | "punching through" the (Windows XP) firewall, allowing | 2767 | "punching through" the (Windows XP) firewall, allowing |
2762 | the remainder of the TFTP transfer to proceed normally. | 2768 | the remainder of the TFTP transfer to proceed normally. |
2763 | A better solution is to properly configure the firewall, | 2769 | A better solution is to properly configure the firewall, |
2764 | but sometimes that is not allowed. | 2770 | but sometimes that is not allowed. |
2765 | 2771 | ||
2766 | - Hashing support: | 2772 | - Hashing support: |
2767 | CONFIG_CMD_HASH | 2773 | CONFIG_CMD_HASH |
2768 | 2774 | ||
2769 | This enables a generic 'hash' command which can produce | 2775 | This enables a generic 'hash' command which can produce |
2770 | hashes / digests from a few algorithms (e.g. SHA1, SHA256). | 2776 | hashes / digests from a few algorithms (e.g. SHA1, SHA256). |
2771 | 2777 | ||
2772 | CONFIG_HASH_VERIFY | 2778 | CONFIG_HASH_VERIFY |
2773 | 2779 | ||
2774 | Enable the hash verify command (hash -v). This adds to code | 2780 | Enable the hash verify command (hash -v). This adds to code |
2775 | size a little. | 2781 | size a little. |
2776 | 2782 | ||
2777 | CONFIG_SHA1 - support SHA1 hashing | 2783 | CONFIG_SHA1 - support SHA1 hashing |
2778 | CONFIG_SHA256 - support SHA256 hashing | 2784 | CONFIG_SHA256 - support SHA256 hashing |
2779 | 2785 | ||
2780 | Note: There is also a sha1sum command, which should perhaps | 2786 | Note: There is also a sha1sum command, which should perhaps |
2781 | be deprecated in favour of 'hash sha1'. | 2787 | be deprecated in favour of 'hash sha1'. |
2782 | 2788 | ||
2783 | - Freescale i.MX specific commands: | 2789 | - Freescale i.MX specific commands: |
2784 | CONFIG_CMD_HDMIDETECT | 2790 | CONFIG_CMD_HDMIDETECT |
2785 | This enables 'hdmidet' command which returns true if an | 2791 | This enables 'hdmidet' command which returns true if an |
2786 | HDMI monitor is detected. This command is i.MX 6 specific. | 2792 | HDMI monitor is detected. This command is i.MX 6 specific. |
2787 | 2793 | ||
2788 | CONFIG_CMD_BMODE | 2794 | CONFIG_CMD_BMODE |
2789 | This enables the 'bmode' (bootmode) command for forcing | 2795 | This enables the 'bmode' (bootmode) command for forcing |
2790 | a boot from specific media. | 2796 | a boot from specific media. |
2791 | 2797 | ||
2792 | This is useful for forcing the ROM's usb downloader to | 2798 | This is useful for forcing the ROM's usb downloader to |
2793 | activate upon a watchdog reset which is nice when iterating | 2799 | activate upon a watchdog reset which is nice when iterating |
2794 | on U-Boot. Using the reset button or running bmode normal | 2800 | on U-Boot. Using the reset button or running bmode normal |
2795 | will set it back to normal. This command currently | 2801 | will set it back to normal. This command currently |
2796 | supports i.MX53 and i.MX6. | 2802 | supports i.MX53 and i.MX6. |
2797 | 2803 | ||
2798 | - Signing support: | 2804 | - Signing support: |
2799 | CONFIG_RSA | 2805 | CONFIG_RSA |
2800 | 2806 | ||
2801 | This enables the RSA algorithm used for FIT image verification | 2807 | This enables the RSA algorithm used for FIT image verification |
2802 | in U-Boot. See doc/uImage/signature for more information. | 2808 | in U-Boot. See doc/uImage/signature for more information. |
2803 | 2809 | ||
2804 | The signing part is build into mkimage regardless of this | 2810 | The signing part is build into mkimage regardless of this |
2805 | option. | 2811 | option. |
2806 | 2812 | ||
2807 | 2813 | ||
2808 | - Show boot progress: | 2814 | - Show boot progress: |
2809 | CONFIG_SHOW_BOOT_PROGRESS | 2815 | CONFIG_SHOW_BOOT_PROGRESS |
2810 | 2816 | ||
2811 | Defining this option allows to add some board- | 2817 | Defining this option allows to add some board- |
2812 | specific code (calling a user-provided function | 2818 | specific code (calling a user-provided function |
2813 | "show_boot_progress(int)") that enables you to show | 2819 | "show_boot_progress(int)") that enables you to show |
2814 | the system's boot progress on some display (for | 2820 | the system's boot progress on some display (for |
2815 | example, some LED's) on your board. At the moment, | 2821 | example, some LED's) on your board. At the moment, |
2816 | the following checkpoints are implemented: | 2822 | the following checkpoints are implemented: |
2817 | 2823 | ||
2818 | - Detailed boot stage timing | 2824 | - Detailed boot stage timing |
2819 | CONFIG_BOOTSTAGE | 2825 | CONFIG_BOOTSTAGE |
2820 | Define this option to get detailed timing of each stage | 2826 | Define this option to get detailed timing of each stage |
2821 | of the boot process. | 2827 | of the boot process. |
2822 | 2828 | ||
2823 | CONFIG_BOOTSTAGE_USER_COUNT | 2829 | CONFIG_BOOTSTAGE_USER_COUNT |
2824 | This is the number of available user bootstage records. | 2830 | This is the number of available user bootstage records. |
2825 | Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) | 2831 | Each time you call bootstage_mark(BOOTSTAGE_ID_ALLOC, ...) |
2826 | a new ID will be allocated from this stash. If you exceed | 2832 | a new ID will be allocated from this stash. If you exceed |
2827 | the limit, recording will stop. | 2833 | the limit, recording will stop. |
2828 | 2834 | ||
2829 | CONFIG_BOOTSTAGE_REPORT | 2835 | CONFIG_BOOTSTAGE_REPORT |
2830 | Define this to print a report before boot, similar to this: | 2836 | Define this to print a report before boot, similar to this: |
2831 | 2837 | ||
2832 | Timer summary in microseconds: | 2838 | Timer summary in microseconds: |
2833 | Mark Elapsed Stage | 2839 | Mark Elapsed Stage |
2834 | 0 0 reset | 2840 | 0 0 reset |
2835 | 3,575,678 3,575,678 board_init_f start | 2841 | 3,575,678 3,575,678 board_init_f start |
2836 | 3,575,695 17 arch_cpu_init A9 | 2842 | 3,575,695 17 arch_cpu_init A9 |
2837 | 3,575,777 82 arch_cpu_init done | 2843 | 3,575,777 82 arch_cpu_init done |
2838 | 3,659,598 83,821 board_init_r start | 2844 | 3,659,598 83,821 board_init_r start |
2839 | 3,910,375 250,777 main_loop | 2845 | 3,910,375 250,777 main_loop |
2840 | 29,916,167 26,005,792 bootm_start | 2846 | 29,916,167 26,005,792 bootm_start |
2841 | 30,361,327 445,160 start_kernel | 2847 | 30,361,327 445,160 start_kernel |
2842 | 2848 | ||
2843 | CONFIG_CMD_BOOTSTAGE | 2849 | CONFIG_CMD_BOOTSTAGE |
2844 | Add a 'bootstage' command which supports printing a report | 2850 | Add a 'bootstage' command which supports printing a report |
2845 | and un/stashing of bootstage data. | 2851 | and un/stashing of bootstage data. |
2846 | 2852 | ||
2847 | CONFIG_BOOTSTAGE_FDT | 2853 | CONFIG_BOOTSTAGE_FDT |
2848 | Stash the bootstage information in the FDT. A root 'bootstage' | 2854 | Stash the bootstage information in the FDT. A root 'bootstage' |
2849 | node is created with each bootstage id as a child. Each child | 2855 | node is created with each bootstage id as a child. Each child |
2850 | has a 'name' property and either 'mark' containing the | 2856 | has a 'name' property and either 'mark' containing the |
2851 | mark time in microsecond, or 'accum' containing the | 2857 | mark time in microsecond, or 'accum' containing the |
2852 | accumulated time for that bootstage id in microseconds. | 2858 | accumulated time for that bootstage id in microseconds. |
2853 | For example: | 2859 | For example: |
2854 | 2860 | ||
2855 | bootstage { | 2861 | bootstage { |
2856 | 154 { | 2862 | 154 { |
2857 | name = "board_init_f"; | 2863 | name = "board_init_f"; |
2858 | mark = <3575678>; | 2864 | mark = <3575678>; |
2859 | }; | 2865 | }; |
2860 | 170 { | 2866 | 170 { |
2861 | name = "lcd"; | 2867 | name = "lcd"; |
2862 | accum = <33482>; | 2868 | accum = <33482>; |
2863 | }; | 2869 | }; |
2864 | }; | 2870 | }; |
2865 | 2871 | ||
2866 | Code in the Linux kernel can find this in /proc/devicetree. | 2872 | Code in the Linux kernel can find this in /proc/devicetree. |
2867 | 2873 | ||
2868 | Legacy uImage format: | 2874 | Legacy uImage format: |
2869 | 2875 | ||
2870 | Arg Where When | 2876 | Arg Where When |
2871 | 1 common/cmd_bootm.c before attempting to boot an image | 2877 | 1 common/cmd_bootm.c before attempting to boot an image |
2872 | -1 common/cmd_bootm.c Image header has bad magic number | 2878 | -1 common/cmd_bootm.c Image header has bad magic number |
2873 | 2 common/cmd_bootm.c Image header has correct magic number | 2879 | 2 common/cmd_bootm.c Image header has correct magic number |
2874 | -2 common/cmd_bootm.c Image header has bad checksum | 2880 | -2 common/cmd_bootm.c Image header has bad checksum |
2875 | 3 common/cmd_bootm.c Image header has correct checksum | 2881 | 3 common/cmd_bootm.c Image header has correct checksum |
2876 | -3 common/cmd_bootm.c Image data has bad checksum | 2882 | -3 common/cmd_bootm.c Image data has bad checksum |
2877 | 4 common/cmd_bootm.c Image data has correct checksum | 2883 | 4 common/cmd_bootm.c Image data has correct checksum |
2878 | -4 common/cmd_bootm.c Image is for unsupported architecture | 2884 | -4 common/cmd_bootm.c Image is for unsupported architecture |
2879 | 5 common/cmd_bootm.c Architecture check OK | 2885 | 5 common/cmd_bootm.c Architecture check OK |
2880 | -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) | 2886 | -5 common/cmd_bootm.c Wrong Image Type (not kernel, multi) |
2881 | 6 common/cmd_bootm.c Image Type check OK | 2887 | 6 common/cmd_bootm.c Image Type check OK |
2882 | -6 common/cmd_bootm.c gunzip uncompression error | 2888 | -6 common/cmd_bootm.c gunzip uncompression error |
2883 | -7 common/cmd_bootm.c Unimplemented compression type | 2889 | -7 common/cmd_bootm.c Unimplemented compression type |
2884 | 7 common/cmd_bootm.c Uncompression OK | 2890 | 7 common/cmd_bootm.c Uncompression OK |
2885 | 8 common/cmd_bootm.c No uncompress/copy overwrite error | 2891 | 8 common/cmd_bootm.c No uncompress/copy overwrite error |
2886 | -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) | 2892 | -9 common/cmd_bootm.c Unsupported OS (not Linux, BSD, VxWorks, QNX) |
2887 | 2893 | ||
2888 | 9 common/image.c Start initial ramdisk verification | 2894 | 9 common/image.c Start initial ramdisk verification |
2889 | -10 common/image.c Ramdisk header has bad magic number | 2895 | -10 common/image.c Ramdisk header has bad magic number |
2890 | -11 common/image.c Ramdisk header has bad checksum | 2896 | -11 common/image.c Ramdisk header has bad checksum |
2891 | 10 common/image.c Ramdisk header is OK | 2897 | 10 common/image.c Ramdisk header is OK |
2892 | -12 common/image.c Ramdisk data has bad checksum | 2898 | -12 common/image.c Ramdisk data has bad checksum |
2893 | 11 common/image.c Ramdisk data has correct checksum | 2899 | 11 common/image.c Ramdisk data has correct checksum |
2894 | 12 common/image.c Ramdisk verification complete, start loading | 2900 | 12 common/image.c Ramdisk verification complete, start loading |
2895 | -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) | 2901 | -13 common/image.c Wrong Image Type (not PPC Linux ramdisk) |
2896 | 13 common/image.c Start multifile image verification | 2902 | 13 common/image.c Start multifile image verification |
2897 | 14 common/image.c No initial ramdisk, no multifile, continue. | 2903 | 14 common/image.c No initial ramdisk, no multifile, continue. |
2898 | 2904 | ||
2899 | 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS | 2905 | 15 arch/<arch>/lib/bootm.c All preparation done, transferring control to OS |
2900 | 2906 | ||
2901 | -30 arch/powerpc/lib/board.c Fatal error, hang the system | 2907 | -30 arch/powerpc/lib/board.c Fatal error, hang the system |
2902 | -31 post/post.c POST test failed, detected by post_output_backlog() | 2908 | -31 post/post.c POST test failed, detected by post_output_backlog() |
2903 | -32 post/post.c POST test failed, detected by post_run_single() | 2909 | -32 post/post.c POST test failed, detected by post_run_single() |
2904 | 2910 | ||
2905 | 34 common/cmd_doc.c before loading a Image from a DOC device | 2911 | 34 common/cmd_doc.c before loading a Image from a DOC device |
2906 | -35 common/cmd_doc.c Bad usage of "doc" command | 2912 | -35 common/cmd_doc.c Bad usage of "doc" command |
2907 | 35 common/cmd_doc.c correct usage of "doc" command | 2913 | 35 common/cmd_doc.c correct usage of "doc" command |
2908 | -36 common/cmd_doc.c No boot device | 2914 | -36 common/cmd_doc.c No boot device |
2909 | 36 common/cmd_doc.c correct boot device | 2915 | 36 common/cmd_doc.c correct boot device |
2910 | -37 common/cmd_doc.c Unknown Chip ID on boot device | 2916 | -37 common/cmd_doc.c Unknown Chip ID on boot device |
2911 | 37 common/cmd_doc.c correct chip ID found, device available | 2917 | 37 common/cmd_doc.c correct chip ID found, device available |
2912 | -38 common/cmd_doc.c Read Error on boot device | 2918 | -38 common/cmd_doc.c Read Error on boot device |
2913 | 38 common/cmd_doc.c reading Image header from DOC device OK | 2919 | 38 common/cmd_doc.c reading Image header from DOC device OK |
2914 | -39 common/cmd_doc.c Image header has bad magic number | 2920 | -39 common/cmd_doc.c Image header has bad magic number |
2915 | 39 common/cmd_doc.c Image header has correct magic number | 2921 | 39 common/cmd_doc.c Image header has correct magic number |
2916 | -40 common/cmd_doc.c Error reading Image from DOC device | 2922 | -40 common/cmd_doc.c Error reading Image from DOC device |
2917 | 40 common/cmd_doc.c Image header has correct magic number | 2923 | 40 common/cmd_doc.c Image header has correct magic number |
2918 | 41 common/cmd_ide.c before loading a Image from a IDE device | 2924 | 41 common/cmd_ide.c before loading a Image from a IDE device |
2919 | -42 common/cmd_ide.c Bad usage of "ide" command | 2925 | -42 common/cmd_ide.c Bad usage of "ide" command |
2920 | 42 common/cmd_ide.c correct usage of "ide" command | 2926 | 42 common/cmd_ide.c correct usage of "ide" command |
2921 | -43 common/cmd_ide.c No boot device | 2927 | -43 common/cmd_ide.c No boot device |
2922 | 43 common/cmd_ide.c boot device found | 2928 | 43 common/cmd_ide.c boot device found |
2923 | -44 common/cmd_ide.c Device not available | 2929 | -44 common/cmd_ide.c Device not available |
2924 | 44 common/cmd_ide.c Device available | 2930 | 44 common/cmd_ide.c Device available |
2925 | -45 common/cmd_ide.c wrong partition selected | 2931 | -45 common/cmd_ide.c wrong partition selected |
2926 | 45 common/cmd_ide.c partition selected | 2932 | 45 common/cmd_ide.c partition selected |
2927 | -46 common/cmd_ide.c Unknown partition table | 2933 | -46 common/cmd_ide.c Unknown partition table |
2928 | 46 common/cmd_ide.c valid partition table found | 2934 | 46 common/cmd_ide.c valid partition table found |
2929 | -47 common/cmd_ide.c Invalid partition type | 2935 | -47 common/cmd_ide.c Invalid partition type |
2930 | 47 common/cmd_ide.c correct partition type | 2936 | 47 common/cmd_ide.c correct partition type |
2931 | -48 common/cmd_ide.c Error reading Image Header on boot device | 2937 | -48 common/cmd_ide.c Error reading Image Header on boot device |
2932 | 48 common/cmd_ide.c reading Image Header from IDE device OK | 2938 | 48 common/cmd_ide.c reading Image Header from IDE device OK |
2933 | -49 common/cmd_ide.c Image header has bad magic number | 2939 | -49 common/cmd_ide.c Image header has bad magic number |
2934 | 49 common/cmd_ide.c Image header has correct magic number | 2940 | 49 common/cmd_ide.c Image header has correct magic number |
2935 | -50 common/cmd_ide.c Image header has bad checksum | 2941 | -50 common/cmd_ide.c Image header has bad checksum |
2936 | 50 common/cmd_ide.c Image header has correct checksum | 2942 | 50 common/cmd_ide.c Image header has correct checksum |
2937 | -51 common/cmd_ide.c Error reading Image from IDE device | 2943 | -51 common/cmd_ide.c Error reading Image from IDE device |
2938 | 51 common/cmd_ide.c reading Image from IDE device OK | 2944 | 51 common/cmd_ide.c reading Image from IDE device OK |
2939 | 52 common/cmd_nand.c before loading a Image from a NAND device | 2945 | 52 common/cmd_nand.c before loading a Image from a NAND device |
2940 | -53 common/cmd_nand.c Bad usage of "nand" command | 2946 | -53 common/cmd_nand.c Bad usage of "nand" command |
2941 | 53 common/cmd_nand.c correct usage of "nand" command | 2947 | 53 common/cmd_nand.c correct usage of "nand" command |
2942 | -54 common/cmd_nand.c No boot device | 2948 | -54 common/cmd_nand.c No boot device |
2943 | 54 common/cmd_nand.c boot device found | 2949 | 54 common/cmd_nand.c boot device found |
2944 | -55 common/cmd_nand.c Unknown Chip ID on boot device | 2950 | -55 common/cmd_nand.c Unknown Chip ID on boot device |
2945 | 55 common/cmd_nand.c correct chip ID found, device available | 2951 | 55 common/cmd_nand.c correct chip ID found, device available |
2946 | -56 common/cmd_nand.c Error reading Image Header on boot device | 2952 | -56 common/cmd_nand.c Error reading Image Header on boot device |
2947 | 56 common/cmd_nand.c reading Image Header from NAND device OK | 2953 | 56 common/cmd_nand.c reading Image Header from NAND device OK |
2948 | -57 common/cmd_nand.c Image header has bad magic number | 2954 | -57 common/cmd_nand.c Image header has bad magic number |
2949 | 57 common/cmd_nand.c Image header has correct magic number | 2955 | 57 common/cmd_nand.c Image header has correct magic number |
2950 | -58 common/cmd_nand.c Error reading Image from NAND device | 2956 | -58 common/cmd_nand.c Error reading Image from NAND device |
2951 | 58 common/cmd_nand.c reading Image from NAND device OK | 2957 | 58 common/cmd_nand.c reading Image from NAND device OK |
2952 | 2958 | ||
2953 | -60 common/env_common.c Environment has a bad CRC, using default | 2959 | -60 common/env_common.c Environment has a bad CRC, using default |
2954 | 2960 | ||
2955 | 64 net/eth.c starting with Ethernet configuration. | 2961 | 64 net/eth.c starting with Ethernet configuration. |
2956 | -64 net/eth.c no Ethernet found. | 2962 | -64 net/eth.c no Ethernet found. |
2957 | 65 net/eth.c Ethernet found. | 2963 | 65 net/eth.c Ethernet found. |
2958 | 2964 | ||
2959 | -80 common/cmd_net.c usage wrong | 2965 | -80 common/cmd_net.c usage wrong |
2960 | 80 common/cmd_net.c before calling NetLoop() | 2966 | 80 common/cmd_net.c before calling NetLoop() |
2961 | -81 common/cmd_net.c some error in NetLoop() occurred | 2967 | -81 common/cmd_net.c some error in NetLoop() occurred |
2962 | 81 common/cmd_net.c NetLoop() back without error | 2968 | 81 common/cmd_net.c NetLoop() back without error |
2963 | -82 common/cmd_net.c size == 0 (File with size 0 loaded) | 2969 | -82 common/cmd_net.c size == 0 (File with size 0 loaded) |
2964 | 82 common/cmd_net.c trying automatic boot | 2970 | 82 common/cmd_net.c trying automatic boot |
2965 | 83 common/cmd_net.c running "source" command | 2971 | 83 common/cmd_net.c running "source" command |
2966 | -83 common/cmd_net.c some error in automatic boot or "source" command | 2972 | -83 common/cmd_net.c some error in automatic boot or "source" command |
2967 | 84 common/cmd_net.c end without errors | 2973 | 84 common/cmd_net.c end without errors |
2968 | 2974 | ||
2969 | FIT uImage format: | 2975 | FIT uImage format: |
2970 | 2976 | ||
2971 | Arg Where When | 2977 | Arg Where When |
2972 | 100 common/cmd_bootm.c Kernel FIT Image has correct format | 2978 | 100 common/cmd_bootm.c Kernel FIT Image has correct format |
2973 | -100 common/cmd_bootm.c Kernel FIT Image has incorrect format | 2979 | -100 common/cmd_bootm.c Kernel FIT Image has incorrect format |
2974 | 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration | 2980 | 101 common/cmd_bootm.c No Kernel subimage unit name, using configuration |
2975 | -101 common/cmd_bootm.c Can't get configuration for kernel subimage | 2981 | -101 common/cmd_bootm.c Can't get configuration for kernel subimage |
2976 | 102 common/cmd_bootm.c Kernel unit name specified | 2982 | 102 common/cmd_bootm.c Kernel unit name specified |
2977 | -103 common/cmd_bootm.c Can't get kernel subimage node offset | 2983 | -103 common/cmd_bootm.c Can't get kernel subimage node offset |
2978 | 103 common/cmd_bootm.c Found configuration node | 2984 | 103 common/cmd_bootm.c Found configuration node |
2979 | 104 common/cmd_bootm.c Got kernel subimage node offset | 2985 | 104 common/cmd_bootm.c Got kernel subimage node offset |
2980 | -104 common/cmd_bootm.c Kernel subimage hash verification failed | 2986 | -104 common/cmd_bootm.c Kernel subimage hash verification failed |
2981 | 105 common/cmd_bootm.c Kernel subimage hash verification OK | 2987 | 105 common/cmd_bootm.c Kernel subimage hash verification OK |
2982 | -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture | 2988 | -105 common/cmd_bootm.c Kernel subimage is for unsupported architecture |
2983 | 106 common/cmd_bootm.c Architecture check OK | 2989 | 106 common/cmd_bootm.c Architecture check OK |
2984 | -106 common/cmd_bootm.c Kernel subimage has wrong type | 2990 | -106 common/cmd_bootm.c Kernel subimage has wrong type |
2985 | 107 common/cmd_bootm.c Kernel subimage type OK | 2991 | 107 common/cmd_bootm.c Kernel subimage type OK |
2986 | -107 common/cmd_bootm.c Can't get kernel subimage data/size | 2992 | -107 common/cmd_bootm.c Can't get kernel subimage data/size |
2987 | 108 common/cmd_bootm.c Got kernel subimage data/size | 2993 | 108 common/cmd_bootm.c Got kernel subimage data/size |
2988 | -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) | 2994 | -108 common/cmd_bootm.c Wrong image type (not legacy, FIT) |
2989 | -109 common/cmd_bootm.c Can't get kernel subimage type | 2995 | -109 common/cmd_bootm.c Can't get kernel subimage type |
2990 | -110 common/cmd_bootm.c Can't get kernel subimage comp | 2996 | -110 common/cmd_bootm.c Can't get kernel subimage comp |
2991 | -111 common/cmd_bootm.c Can't get kernel subimage os | 2997 | -111 common/cmd_bootm.c Can't get kernel subimage os |
2992 | -112 common/cmd_bootm.c Can't get kernel subimage load address | 2998 | -112 common/cmd_bootm.c Can't get kernel subimage load address |
2993 | -113 common/cmd_bootm.c Image uncompress/copy overwrite error | 2999 | -113 common/cmd_bootm.c Image uncompress/copy overwrite error |
2994 | 3000 | ||
2995 | 120 common/image.c Start initial ramdisk verification | 3001 | 120 common/image.c Start initial ramdisk verification |
2996 | -120 common/image.c Ramdisk FIT image has incorrect format | 3002 | -120 common/image.c Ramdisk FIT image has incorrect format |
2997 | 121 common/image.c Ramdisk FIT image has correct format | 3003 | 121 common/image.c Ramdisk FIT image has correct format |
2998 | 122 common/image.c No ramdisk subimage unit name, using configuration | 3004 | 122 common/image.c No ramdisk subimage unit name, using configuration |
2999 | -122 common/image.c Can't get configuration for ramdisk subimage | 3005 | -122 common/image.c Can't get configuration for ramdisk subimage |
3000 | 123 common/image.c Ramdisk unit name specified | 3006 | 123 common/image.c Ramdisk unit name specified |
3001 | -124 common/image.c Can't get ramdisk subimage node offset | 3007 | -124 common/image.c Can't get ramdisk subimage node offset |
3002 | 125 common/image.c Got ramdisk subimage node offset | 3008 | 125 common/image.c Got ramdisk subimage node offset |
3003 | -125 common/image.c Ramdisk subimage hash verification failed | 3009 | -125 common/image.c Ramdisk subimage hash verification failed |
3004 | 126 common/image.c Ramdisk subimage hash verification OK | 3010 | 126 common/image.c Ramdisk subimage hash verification OK |
3005 | -126 common/image.c Ramdisk subimage for unsupported architecture | 3011 | -126 common/image.c Ramdisk subimage for unsupported architecture |
3006 | 127 common/image.c Architecture check OK | 3012 | 127 common/image.c Architecture check OK |
3007 | -127 common/image.c Can't get ramdisk subimage data/size | 3013 | -127 common/image.c Can't get ramdisk subimage data/size |
3008 | 128 common/image.c Got ramdisk subimage data/size | 3014 | 128 common/image.c Got ramdisk subimage data/size |
3009 | 129 common/image.c Can't get ramdisk load address | 3015 | 129 common/image.c Can't get ramdisk load address |
3010 | -129 common/image.c Got ramdisk load address | 3016 | -129 common/image.c Got ramdisk load address |
3011 | 3017 | ||
3012 | -130 common/cmd_doc.c Incorrect FIT image format | 3018 | -130 common/cmd_doc.c Incorrect FIT image format |
3013 | 131 common/cmd_doc.c FIT image format OK | 3019 | 131 common/cmd_doc.c FIT image format OK |
3014 | 3020 | ||
3015 | -140 common/cmd_ide.c Incorrect FIT image format | 3021 | -140 common/cmd_ide.c Incorrect FIT image format |
3016 | 141 common/cmd_ide.c FIT image format OK | 3022 | 141 common/cmd_ide.c FIT image format OK |
3017 | 3023 | ||
3018 | -150 common/cmd_nand.c Incorrect FIT image format | 3024 | -150 common/cmd_nand.c Incorrect FIT image format |
3019 | 151 common/cmd_nand.c FIT image format OK | 3025 | 151 common/cmd_nand.c FIT image format OK |
3020 | 3026 | ||
3021 | - FIT image support: | 3027 | - FIT image support: |
3022 | CONFIG_FIT | 3028 | CONFIG_FIT |
3023 | Enable support for the FIT uImage format. | 3029 | Enable support for the FIT uImage format. |
3024 | 3030 | ||
3025 | CONFIG_FIT_BEST_MATCH | 3031 | CONFIG_FIT_BEST_MATCH |
3026 | When no configuration is explicitly selected, default to the | 3032 | When no configuration is explicitly selected, default to the |
3027 | one whose fdt's compatibility field best matches that of | 3033 | one whose fdt's compatibility field best matches that of |
3028 | U-Boot itself. A match is considered "best" if it matches the | 3034 | U-Boot itself. A match is considered "best" if it matches the |
3029 | most specific compatibility entry of U-Boot's fdt's root node. | 3035 | most specific compatibility entry of U-Boot's fdt's root node. |
3030 | The order of entries in the configuration's fdt is ignored. | 3036 | The order of entries in the configuration's fdt is ignored. |
3031 | 3037 | ||
3032 | CONFIG_FIT_SIGNATURE | 3038 | CONFIG_FIT_SIGNATURE |
3033 | This option enables signature verification of FIT uImages, | 3039 | This option enables signature verification of FIT uImages, |
3034 | using a hash signed and verified using RSA. See | 3040 | using a hash signed and verified using RSA. See |
3035 | doc/uImage.FIT/signature.txt for more details. | 3041 | doc/uImage.FIT/signature.txt for more details. |
3036 | 3042 | ||
3037 | - Standalone program support: | 3043 | - Standalone program support: |
3038 | CONFIG_STANDALONE_LOAD_ADDR | 3044 | CONFIG_STANDALONE_LOAD_ADDR |
3039 | 3045 | ||
3040 | This option defines a board specific value for the | 3046 | This option defines a board specific value for the |
3041 | address where standalone program gets loaded, thus | 3047 | address where standalone program gets loaded, thus |
3042 | overwriting the architecture dependent default | 3048 | overwriting the architecture dependent default |
3043 | settings. | 3049 | settings. |
3044 | 3050 | ||
3045 | - Frame Buffer Address: | 3051 | - Frame Buffer Address: |
3046 | CONFIG_FB_ADDR | 3052 | CONFIG_FB_ADDR |
3047 | 3053 | ||
3048 | Define CONFIG_FB_ADDR if you want to use specific | 3054 | Define CONFIG_FB_ADDR if you want to use specific |
3049 | address for frame buffer. This is typically the case | 3055 | address for frame buffer. This is typically the case |
3050 | when using a graphics controller has separate video | 3056 | when using a graphics controller has separate video |
3051 | memory. U-Boot will then place the frame buffer at | 3057 | memory. U-Boot will then place the frame buffer at |
3052 | the given address instead of dynamically reserving it | 3058 | the given address instead of dynamically reserving it |
3053 | in system RAM by calling lcd_setmem(), which grabs | 3059 | in system RAM by calling lcd_setmem(), which grabs |
3054 | the memory for the frame buffer depending on the | 3060 | the memory for the frame buffer depending on the |
3055 | configured panel size. | 3061 | configured panel size. |
3056 | 3062 | ||
3057 | Please see board_init_f function. | 3063 | Please see board_init_f function. |
3058 | 3064 | ||
3059 | - Automatic software updates via TFTP server | 3065 | - Automatic software updates via TFTP server |
3060 | CONFIG_UPDATE_TFTP | 3066 | CONFIG_UPDATE_TFTP |
3061 | CONFIG_UPDATE_TFTP_CNT_MAX | 3067 | CONFIG_UPDATE_TFTP_CNT_MAX |
3062 | CONFIG_UPDATE_TFTP_MSEC_MAX | 3068 | CONFIG_UPDATE_TFTP_MSEC_MAX |
3063 | 3069 | ||
3064 | These options enable and control the auto-update feature; | 3070 | These options enable and control the auto-update feature; |
3065 | for a more detailed description refer to doc/README.update. | 3071 | for a more detailed description refer to doc/README.update. |
3066 | 3072 | ||
3067 | - MTD Support (mtdparts command, UBI support) | 3073 | - MTD Support (mtdparts command, UBI support) |
3068 | CONFIG_MTD_DEVICE | 3074 | CONFIG_MTD_DEVICE |
3069 | 3075 | ||
3070 | Adds the MTD device infrastructure from the Linux kernel. | 3076 | Adds the MTD device infrastructure from the Linux kernel. |
3071 | Needed for mtdparts command support. | 3077 | Needed for mtdparts command support. |
3072 | 3078 | ||
3073 | CONFIG_MTD_PARTITIONS | 3079 | CONFIG_MTD_PARTITIONS |
3074 | 3080 | ||
3075 | Adds the MTD partitioning infrastructure from the Linux | 3081 | Adds the MTD partitioning infrastructure from the Linux |
3076 | kernel. Needed for UBI support. | 3082 | kernel. Needed for UBI support. |
3077 | 3083 | ||
3078 | - UBI support | 3084 | - UBI support |
3079 | CONFIG_CMD_UBI | 3085 | CONFIG_CMD_UBI |
3080 | 3086 | ||
3081 | Adds commands for interacting with MTD partitions formatted | 3087 | Adds commands for interacting with MTD partitions formatted |
3082 | with the UBI flash translation layer | 3088 | with the UBI flash translation layer |
3083 | 3089 | ||
3084 | Requires also defining CONFIG_RBTREE | 3090 | Requires also defining CONFIG_RBTREE |
3085 | 3091 | ||
3086 | CONFIG_UBI_SILENCE_MSG | 3092 | CONFIG_UBI_SILENCE_MSG |
3087 | 3093 | ||
3088 | Make the verbose messages from UBI stop printing. This leaves | 3094 | Make the verbose messages from UBI stop printing. This leaves |
3089 | warnings and errors enabled. | 3095 | warnings and errors enabled. |
3090 | 3096 | ||
3091 | - UBIFS support | 3097 | - UBIFS support |
3092 | CONFIG_CMD_UBIFS | 3098 | CONFIG_CMD_UBIFS |
3093 | 3099 | ||
3094 | Adds commands for interacting with UBI volumes formatted as | 3100 | Adds commands for interacting with UBI volumes formatted as |
3095 | UBIFS. UBIFS is read-only in u-boot. | 3101 | UBIFS. UBIFS is read-only in u-boot. |
3096 | 3102 | ||
3097 | Requires UBI support as well as CONFIG_LZO | 3103 | Requires UBI support as well as CONFIG_LZO |
3098 | 3104 | ||
3099 | CONFIG_UBIFS_SILENCE_MSG | 3105 | CONFIG_UBIFS_SILENCE_MSG |
3100 | 3106 | ||
3101 | Make the verbose messages from UBIFS stop printing. This leaves | 3107 | Make the verbose messages from UBIFS stop printing. This leaves |
3102 | warnings and errors enabled. | 3108 | warnings and errors enabled. |
3103 | 3109 | ||
3104 | - SPL framework | 3110 | - SPL framework |
3105 | CONFIG_SPL | 3111 | CONFIG_SPL |
3106 | Enable building of SPL globally. | 3112 | Enable building of SPL globally. |
3107 | 3113 | ||
3108 | CONFIG_SPL_LDSCRIPT | 3114 | CONFIG_SPL_LDSCRIPT |
3109 | LDSCRIPT for linking the SPL binary. | 3115 | LDSCRIPT for linking the SPL binary. |
3110 | 3116 | ||
3111 | CONFIG_SPL_MAX_FOOTPRINT | 3117 | CONFIG_SPL_MAX_FOOTPRINT |
3112 | Maximum size in memory allocated to the SPL, BSS included. | 3118 | Maximum size in memory allocated to the SPL, BSS included. |
3113 | When defined, the linker checks that the actual memory | 3119 | When defined, the linker checks that the actual memory |
3114 | used by SPL from _start to __bss_end does not exceed it. | 3120 | used by SPL from _start to __bss_end does not exceed it. |
3115 | CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE | 3121 | CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE |
3116 | must not be both defined at the same time. | 3122 | must not be both defined at the same time. |
3117 | 3123 | ||
3118 | CONFIG_SPL_MAX_SIZE | 3124 | CONFIG_SPL_MAX_SIZE |
3119 | Maximum size of the SPL image (text, data, rodata, and | 3125 | Maximum size of the SPL image (text, data, rodata, and |
3120 | linker lists sections), BSS excluded. | 3126 | linker lists sections), BSS excluded. |
3121 | When defined, the linker checks that the actual size does | 3127 | When defined, the linker checks that the actual size does |
3122 | not exceed it. | 3128 | not exceed it. |
3123 | 3129 | ||
3124 | CONFIG_SPL_TEXT_BASE | 3130 | CONFIG_SPL_TEXT_BASE |
3125 | TEXT_BASE for linking the SPL binary. | 3131 | TEXT_BASE for linking the SPL binary. |
3126 | 3132 | ||
3127 | CONFIG_SPL_RELOC_TEXT_BASE | 3133 | CONFIG_SPL_RELOC_TEXT_BASE |
3128 | Address to relocate to. If unspecified, this is equal to | 3134 | Address to relocate to. If unspecified, this is equal to |
3129 | CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). | 3135 | CONFIG_SPL_TEXT_BASE (i.e. no relocation is done). |
3130 | 3136 | ||
3131 | CONFIG_SPL_BSS_START_ADDR | 3137 | CONFIG_SPL_BSS_START_ADDR |
3132 | Link address for the BSS within the SPL binary. | 3138 | Link address for the BSS within the SPL binary. |
3133 | 3139 | ||
3134 | CONFIG_SPL_BSS_MAX_SIZE | 3140 | CONFIG_SPL_BSS_MAX_SIZE |
3135 | Maximum size in memory allocated to the SPL BSS. | 3141 | Maximum size in memory allocated to the SPL BSS. |
3136 | When defined, the linker checks that the actual memory used | 3142 | When defined, the linker checks that the actual memory used |
3137 | by SPL from __bss_start to __bss_end does not exceed it. | 3143 | by SPL from __bss_start to __bss_end does not exceed it. |
3138 | CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE | 3144 | CONFIG_SPL_MAX_FOOTPRINT and CONFIG_SPL_BSS_MAX_SIZE |
3139 | must not be both defined at the same time. | 3145 | must not be both defined at the same time. |
3140 | 3146 | ||
3141 | CONFIG_SPL_STACK | 3147 | CONFIG_SPL_STACK |
3142 | Adress of the start of the stack SPL will use | 3148 | Adress of the start of the stack SPL will use |
3143 | 3149 | ||
3144 | CONFIG_SPL_RELOC_STACK | 3150 | CONFIG_SPL_RELOC_STACK |
3145 | Adress of the start of the stack SPL will use after | 3151 | Adress of the start of the stack SPL will use after |
3146 | relocation. If unspecified, this is equal to | 3152 | relocation. If unspecified, this is equal to |
3147 | CONFIG_SPL_STACK. | 3153 | CONFIG_SPL_STACK. |
3148 | 3154 | ||
3149 | CONFIG_SYS_SPL_MALLOC_START | 3155 | CONFIG_SYS_SPL_MALLOC_START |
3150 | Starting address of the malloc pool used in SPL. | 3156 | Starting address of the malloc pool used in SPL. |
3151 | 3157 | ||
3152 | CONFIG_SYS_SPL_MALLOC_SIZE | 3158 | CONFIG_SYS_SPL_MALLOC_SIZE |
3153 | The size of the malloc pool used in SPL. | 3159 | The size of the malloc pool used in SPL. |
3154 | 3160 | ||
3155 | CONFIG_SPL_FRAMEWORK | 3161 | CONFIG_SPL_FRAMEWORK |
3156 | Enable the SPL framework under common/. This framework | 3162 | Enable the SPL framework under common/. This framework |
3157 | supports MMC, NAND and YMODEM loading of U-Boot and NAND | 3163 | supports MMC, NAND and YMODEM loading of U-Boot and NAND |
3158 | NAND loading of the Linux Kernel. | 3164 | NAND loading of the Linux Kernel. |
3159 | 3165 | ||
3160 | CONFIG_SPL_DISPLAY_PRINT | 3166 | CONFIG_SPL_DISPLAY_PRINT |
3161 | For ARM, enable an optional function to print more information | 3167 | For ARM, enable an optional function to print more information |
3162 | about the running system. | 3168 | about the running system. |
3163 | 3169 | ||
3164 | CONFIG_SPL_INIT_MINIMAL | 3170 | CONFIG_SPL_INIT_MINIMAL |
3165 | Arch init code should be built for a very small image | 3171 | Arch init code should be built for a very small image |
3166 | 3172 | ||
3167 | CONFIG_SPL_LIBCOMMON_SUPPORT | 3173 | CONFIG_SPL_LIBCOMMON_SUPPORT |
3168 | Support for common/libcommon.o in SPL binary | 3174 | Support for common/libcommon.o in SPL binary |
3169 | 3175 | ||
3170 | CONFIG_SPL_LIBDISK_SUPPORT | 3176 | CONFIG_SPL_LIBDISK_SUPPORT |
3171 | Support for disk/libdisk.o in SPL binary | 3177 | Support for disk/libdisk.o in SPL binary |
3172 | 3178 | ||
3173 | CONFIG_SPL_I2C_SUPPORT | 3179 | CONFIG_SPL_I2C_SUPPORT |
3174 | Support for drivers/i2c/libi2c.o in SPL binary | 3180 | Support for drivers/i2c/libi2c.o in SPL binary |
3175 | 3181 | ||
3176 | CONFIG_SPL_GPIO_SUPPORT | 3182 | CONFIG_SPL_GPIO_SUPPORT |
3177 | Support for drivers/gpio/libgpio.o in SPL binary | 3183 | Support for drivers/gpio/libgpio.o in SPL binary |
3178 | 3184 | ||
3179 | CONFIG_SPL_MMC_SUPPORT | 3185 | CONFIG_SPL_MMC_SUPPORT |
3180 | Support for drivers/mmc/libmmc.o in SPL binary | 3186 | Support for drivers/mmc/libmmc.o in SPL binary |
3181 | 3187 | ||
3182 | CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, | 3188 | CONFIG_SYS_MMCSD_RAW_MODE_U_BOOT_SECTOR, |
3183 | CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, | 3189 | CONFIG_SYS_U_BOOT_MAX_SIZE_SECTORS, |
3184 | CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION | 3190 | CONFIG_SYS_MMC_SD_FAT_BOOT_PARTITION |
3185 | Address, size and partition on the MMC to load U-Boot from | 3191 | Address, size and partition on the MMC to load U-Boot from |
3186 | when the MMC is being used in raw mode. | 3192 | when the MMC is being used in raw mode. |
3187 | 3193 | ||
3188 | CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR | 3194 | CONFIG_SYS_MMCSD_RAW_MODE_KERNEL_SECTOR |
3189 | Sector to load kernel uImage from when MMC is being | 3195 | Sector to load kernel uImage from when MMC is being |
3190 | used in raw mode (for Falcon mode) | 3196 | used in raw mode (for Falcon mode) |
3191 | 3197 | ||
3192 | CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, | 3198 | CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTOR, |
3193 | CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS | 3199 | CONFIG_SYS_MMCSD_RAW_MODE_ARGS_SECTORS |
3194 | Sector and number of sectors to load kernel argument | 3200 | Sector and number of sectors to load kernel argument |
3195 | parameters from when MMC is being used in raw mode | 3201 | parameters from when MMC is being used in raw mode |
3196 | (for falcon mode) | 3202 | (for falcon mode) |
3197 | 3203 | ||
3198 | CONFIG_SPL_FAT_SUPPORT | 3204 | CONFIG_SPL_FAT_SUPPORT |
3199 | Support for fs/fat/libfat.o in SPL binary | 3205 | Support for fs/fat/libfat.o in SPL binary |
3200 | 3206 | ||
3201 | CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME | 3207 | CONFIG_SPL_FAT_LOAD_PAYLOAD_NAME |
3202 | Filename to read to load U-Boot when reading from FAT | 3208 | Filename to read to load U-Boot when reading from FAT |
3203 | 3209 | ||
3204 | CONFIG_SPL_FAT_LOAD_KERNEL_NAME | 3210 | CONFIG_SPL_FAT_LOAD_KERNEL_NAME |
3205 | Filename to read to load kernel uImage when reading | 3211 | Filename to read to load kernel uImage when reading |
3206 | from FAT (for Falcon mode) | 3212 | from FAT (for Falcon mode) |
3207 | 3213 | ||
3208 | CONFIG_SPL_FAT_LOAD_ARGS_NAME | 3214 | CONFIG_SPL_FAT_LOAD_ARGS_NAME |
3209 | Filename to read to load kernel argument parameters | 3215 | Filename to read to load kernel argument parameters |
3210 | when reading from FAT (for Falcon mode) | 3216 | when reading from FAT (for Falcon mode) |
3211 | 3217 | ||
3212 | CONFIG_SPL_MPC83XX_WAIT_FOR_NAND | 3218 | CONFIG_SPL_MPC83XX_WAIT_FOR_NAND |
3213 | Set this for NAND SPL on PPC mpc83xx targets, so that | 3219 | Set this for NAND SPL on PPC mpc83xx targets, so that |
3214 | start.S waits for the rest of the SPL to load before | 3220 | start.S waits for the rest of the SPL to load before |
3215 | continuing (the hardware starts execution after just | 3221 | continuing (the hardware starts execution after just |
3216 | loading the first page rather than the full 4K). | 3222 | loading the first page rather than the full 4K). |
3217 | 3223 | ||
3218 | CONFIG_SPL_NAND_BASE | 3224 | CONFIG_SPL_NAND_BASE |
3219 | Include nand_base.c in the SPL. Requires | 3225 | Include nand_base.c in the SPL. Requires |
3220 | CONFIG_SPL_NAND_DRIVERS. | 3226 | CONFIG_SPL_NAND_DRIVERS. |
3221 | 3227 | ||
3222 | CONFIG_SPL_NAND_DRIVERS | 3228 | CONFIG_SPL_NAND_DRIVERS |
3223 | SPL uses normal NAND drivers, not minimal drivers. | 3229 | SPL uses normal NAND drivers, not minimal drivers. |
3224 | 3230 | ||
3225 | CONFIG_SPL_NAND_ECC | 3231 | CONFIG_SPL_NAND_ECC |
3226 | Include standard software ECC in the SPL | 3232 | Include standard software ECC in the SPL |
3227 | 3233 | ||
3228 | CONFIG_SPL_NAND_SIMPLE | 3234 | CONFIG_SPL_NAND_SIMPLE |
3229 | Support for NAND boot using simple NAND drivers that | 3235 | Support for NAND boot using simple NAND drivers that |
3230 | expose the cmd_ctrl() interface. | 3236 | expose the cmd_ctrl() interface. |
3231 | 3237 | ||
3232 | CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT | 3238 | CONFIG_SPL_MPC8XXX_INIT_DDR_SUPPORT |
3233 | Set for the SPL on PPC mpc8xxx targets, support for | 3239 | Set for the SPL on PPC mpc8xxx targets, support for |
3234 | drivers/ddr/fsl/libddr.o in SPL binary. | 3240 | drivers/ddr/fsl/libddr.o in SPL binary. |
3235 | 3241 | ||
3236 | CONFIG_SPL_COMMON_INIT_DDR | 3242 | CONFIG_SPL_COMMON_INIT_DDR |
3237 | Set for common ddr init with serial presence detect in | 3243 | Set for common ddr init with serial presence detect in |
3238 | SPL binary. | 3244 | SPL binary. |
3239 | 3245 | ||
3240 | CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, | 3246 | CONFIG_SYS_NAND_5_ADDR_CYCLE, CONFIG_SYS_NAND_PAGE_COUNT, |
3241 | CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, | 3247 | CONFIG_SYS_NAND_PAGE_SIZE, CONFIG_SYS_NAND_OOBSIZE, |
3242 | CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, | 3248 | CONFIG_SYS_NAND_BLOCK_SIZE, CONFIG_SYS_NAND_BAD_BLOCK_POS, |
3243 | CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, | 3249 | CONFIG_SYS_NAND_ECCPOS, CONFIG_SYS_NAND_ECCSIZE, |
3244 | CONFIG_SYS_NAND_ECCBYTES | 3250 | CONFIG_SYS_NAND_ECCBYTES |
3245 | Defines the size and behavior of the NAND that SPL uses | 3251 | Defines the size and behavior of the NAND that SPL uses |
3246 | to read U-Boot | 3252 | to read U-Boot |
3247 | 3253 | ||
3248 | CONFIG_SYS_NAND_U_BOOT_OFFS | 3254 | CONFIG_SYS_NAND_U_BOOT_OFFS |
3249 | Location in NAND to read U-Boot from | 3255 | Location in NAND to read U-Boot from |
3250 | 3256 | ||
3251 | CONFIG_SYS_NAND_U_BOOT_DST | 3257 | CONFIG_SYS_NAND_U_BOOT_DST |
3252 | Location in memory to load U-Boot to | 3258 | Location in memory to load U-Boot to |
3253 | 3259 | ||
3254 | CONFIG_SYS_NAND_U_BOOT_SIZE | 3260 | CONFIG_SYS_NAND_U_BOOT_SIZE |
3255 | Size of image to load | 3261 | Size of image to load |
3256 | 3262 | ||
3257 | CONFIG_SYS_NAND_U_BOOT_START | 3263 | CONFIG_SYS_NAND_U_BOOT_START |
3258 | Entry point in loaded image to jump to | 3264 | Entry point in loaded image to jump to |
3259 | 3265 | ||
3260 | CONFIG_SYS_NAND_HW_ECC_OOBFIRST | 3266 | CONFIG_SYS_NAND_HW_ECC_OOBFIRST |
3261 | Define this if you need to first read the OOB and then the | 3267 | Define this if you need to first read the OOB and then the |
3262 | data. This is used for example on davinci plattforms. | 3268 | data. This is used for example on davinci plattforms. |
3263 | 3269 | ||
3264 | CONFIG_SPL_OMAP3_ID_NAND | 3270 | CONFIG_SPL_OMAP3_ID_NAND |
3265 | Support for an OMAP3-specific set of functions to return the | 3271 | Support for an OMAP3-specific set of functions to return the |
3266 | ID and MFR of the first attached NAND chip, if present. | 3272 | ID and MFR of the first attached NAND chip, if present. |
3267 | 3273 | ||
3268 | CONFIG_SPL_SERIAL_SUPPORT | 3274 | CONFIG_SPL_SERIAL_SUPPORT |
3269 | Support for drivers/serial/libserial.o in SPL binary | 3275 | Support for drivers/serial/libserial.o in SPL binary |
3270 | 3276 | ||
3271 | CONFIG_SPL_SPI_FLASH_SUPPORT | 3277 | CONFIG_SPL_SPI_FLASH_SUPPORT |
3272 | Support for drivers/mtd/spi/libspi_flash.o in SPL binary | 3278 | Support for drivers/mtd/spi/libspi_flash.o in SPL binary |
3273 | 3279 | ||
3274 | CONFIG_SPL_SPI_SUPPORT | 3280 | CONFIG_SPL_SPI_SUPPORT |
3275 | Support for drivers/spi/libspi.o in SPL binary | 3281 | Support for drivers/spi/libspi.o in SPL binary |
3276 | 3282 | ||
3277 | CONFIG_SPL_RAM_DEVICE | 3283 | CONFIG_SPL_RAM_DEVICE |
3278 | Support for running image already present in ram, in SPL binary | 3284 | Support for running image already present in ram, in SPL binary |
3279 | 3285 | ||
3280 | CONFIG_SPL_LIBGENERIC_SUPPORT | 3286 | CONFIG_SPL_LIBGENERIC_SUPPORT |
3281 | Support for lib/libgeneric.o in SPL binary | 3287 | Support for lib/libgeneric.o in SPL binary |
3282 | 3288 | ||
3283 | CONFIG_SPL_ENV_SUPPORT | 3289 | CONFIG_SPL_ENV_SUPPORT |
3284 | Support for the environment operating in SPL binary | 3290 | Support for the environment operating in SPL binary |
3285 | 3291 | ||
3286 | CONFIG_SPL_NET_SUPPORT | 3292 | CONFIG_SPL_NET_SUPPORT |
3287 | Support for the net/libnet.o in SPL binary. | 3293 | Support for the net/libnet.o in SPL binary. |
3288 | It conflicts with SPL env from storage medium specified by | 3294 | It conflicts with SPL env from storage medium specified by |
3289 | CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE | 3295 | CONFIG_ENV_IS_xxx but CONFIG_ENV_IS_NOWHERE |
3290 | 3296 | ||
3291 | CONFIG_SPL_PAD_TO | 3297 | CONFIG_SPL_PAD_TO |
3292 | Image offset to which the SPL should be padded before appending | 3298 | Image offset to which the SPL should be padded before appending |
3293 | the SPL payload. By default, this is defined as | 3299 | the SPL payload. By default, this is defined as |
3294 | CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. | 3300 | CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. |
3295 | CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL | 3301 | CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL |
3296 | payload without any padding, or >= CONFIG_SPL_MAX_SIZE. | 3302 | payload without any padding, or >= CONFIG_SPL_MAX_SIZE. |
3297 | 3303 | ||
3298 | CONFIG_SPL_TARGET | 3304 | CONFIG_SPL_TARGET |
3299 | Final target image containing SPL and payload. Some SPLs | 3305 | Final target image containing SPL and payload. Some SPLs |
3300 | use an arch-specific makefile fragment instead, for | 3306 | use an arch-specific makefile fragment instead, for |
3301 | example if more than one image needs to be produced. | 3307 | example if more than one image needs to be produced. |
3302 | 3308 | ||
3303 | CONFIG_FIT_SPL_PRINT | 3309 | CONFIG_FIT_SPL_PRINT |
3304 | Printing information about a FIT image adds quite a bit of | 3310 | Printing information about a FIT image adds quite a bit of |
3305 | code to SPL. So this is normally disabled in SPL. Use this | 3311 | code to SPL. So this is normally disabled in SPL. Use this |
3306 | option to re-enable it. This will affect the output of the | 3312 | option to re-enable it. This will affect the output of the |
3307 | bootm command when booting a FIT image. | 3313 | bootm command when booting a FIT image. |
3308 | 3314 | ||
3309 | - TPL framework | 3315 | - TPL framework |
3310 | CONFIG_TPL | 3316 | CONFIG_TPL |
3311 | Enable building of TPL globally. | 3317 | Enable building of TPL globally. |
3312 | 3318 | ||
3313 | CONFIG_TPL_PAD_TO | 3319 | CONFIG_TPL_PAD_TO |
3314 | Image offset to which the TPL should be padded before appending | 3320 | Image offset to which the TPL should be padded before appending |
3315 | the TPL payload. By default, this is defined as | 3321 | the TPL payload. By default, this is defined as |
3316 | CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. | 3322 | CONFIG_SPL_MAX_SIZE, or 0 if CONFIG_SPL_MAX_SIZE is undefined. |
3317 | CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL | 3323 | CONFIG_SPL_PAD_TO must be either 0, meaning to append the SPL |
3318 | payload without any padding, or >= CONFIG_SPL_MAX_SIZE. | 3324 | payload without any padding, or >= CONFIG_SPL_MAX_SIZE. |
3319 | 3325 | ||
3320 | Modem Support: | 3326 | Modem Support: |
3321 | -------------- | 3327 | -------------- |
3322 | 3328 | ||
3323 | [so far only for SMDK2400 boards] | 3329 | [so far only for SMDK2400 boards] |
3324 | 3330 | ||
3325 | - Modem support enable: | 3331 | - Modem support enable: |
3326 | CONFIG_MODEM_SUPPORT | 3332 | CONFIG_MODEM_SUPPORT |
3327 | 3333 | ||
3328 | - RTS/CTS Flow control enable: | 3334 | - RTS/CTS Flow control enable: |
3329 | CONFIG_HWFLOW | 3335 | CONFIG_HWFLOW |
3330 | 3336 | ||
3331 | - Modem debug support: | 3337 | - Modem debug support: |
3332 | CONFIG_MODEM_SUPPORT_DEBUG | 3338 | CONFIG_MODEM_SUPPORT_DEBUG |
3333 | 3339 | ||
3334 | Enables debugging stuff (char screen[1024], dbg()) | 3340 | Enables debugging stuff (char screen[1024], dbg()) |
3335 | for modem support. Useful only with BDI2000. | 3341 | for modem support. Useful only with BDI2000. |
3336 | 3342 | ||
3337 | - Interrupt support (PPC): | 3343 | - Interrupt support (PPC): |
3338 | 3344 | ||
3339 | There are common interrupt_init() and timer_interrupt() | 3345 | There are common interrupt_init() and timer_interrupt() |
3340 | for all PPC archs. interrupt_init() calls interrupt_init_cpu() | 3346 | for all PPC archs. interrupt_init() calls interrupt_init_cpu() |
3341 | for CPU specific initialization. interrupt_init_cpu() | 3347 | for CPU specific initialization. interrupt_init_cpu() |
3342 | should set decrementer_count to appropriate value. If | 3348 | should set decrementer_count to appropriate value. If |
3343 | CPU resets decrementer automatically after interrupt | 3349 | CPU resets decrementer automatically after interrupt |
3344 | (ppc4xx) it should set decrementer_count to zero. | 3350 | (ppc4xx) it should set decrementer_count to zero. |
3345 | timer_interrupt() calls timer_interrupt_cpu() for CPU | 3351 | timer_interrupt() calls timer_interrupt_cpu() for CPU |
3346 | specific handling. If board has watchdog / status_led | 3352 | specific handling. If board has watchdog / status_led |
3347 | / other_activity_monitor it works automatically from | 3353 | / other_activity_monitor it works automatically from |
3348 | general timer_interrupt(). | 3354 | general timer_interrupt(). |
3349 | 3355 | ||
3350 | - General: | 3356 | - General: |
3351 | 3357 | ||
3352 | In the target system modem support is enabled when a | 3358 | In the target system modem support is enabled when a |
3353 | specific key (key combination) is pressed during | 3359 | specific key (key combination) is pressed during |
3354 | power-on. Otherwise U-Boot will boot normally | 3360 | power-on. Otherwise U-Boot will boot normally |
3355 | (autoboot). The key_pressed() function is called from | 3361 | (autoboot). The key_pressed() function is called from |
3356 | board_init(). Currently key_pressed() is a dummy | 3362 | board_init(). Currently key_pressed() is a dummy |
3357 | function, returning 1 and thus enabling modem | 3363 | function, returning 1 and thus enabling modem |
3358 | initialization. | 3364 | initialization. |
3359 | 3365 | ||
3360 | If there are no modem init strings in the | 3366 | If there are no modem init strings in the |
3361 | environment, U-Boot proceed to autoboot; the | 3367 | environment, U-Boot proceed to autoboot; the |
3362 | previous output (banner, info printfs) will be | 3368 | previous output (banner, info printfs) will be |
3363 | suppressed, though. | 3369 | suppressed, though. |
3364 | 3370 | ||
3365 | See also: doc/README.Modem | 3371 | See also: doc/README.Modem |
3366 | 3372 | ||
3367 | Board initialization settings: | 3373 | Board initialization settings: |
3368 | ------------------------------ | 3374 | ------------------------------ |
3369 | 3375 | ||
3370 | During Initialization u-boot calls a number of board specific functions | 3376 | During Initialization u-boot calls a number of board specific functions |
3371 | to allow the preparation of board specific prerequisites, e.g. pin setup | 3377 | to allow the preparation of board specific prerequisites, e.g. pin setup |
3372 | before drivers are initialized. To enable these callbacks the | 3378 | before drivers are initialized. To enable these callbacks the |
3373 | following configuration macros have to be defined. Currently this is | 3379 | following configuration macros have to be defined. Currently this is |
3374 | architecture specific, so please check arch/your_architecture/lib/board.c | 3380 | architecture specific, so please check arch/your_architecture/lib/board.c |
3375 | typically in board_init_f() and board_init_r(). | 3381 | typically in board_init_f() and board_init_r(). |
3376 | 3382 | ||
3377 | - CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() | 3383 | - CONFIG_BOARD_EARLY_INIT_F: Call board_early_init_f() |
3378 | - CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() | 3384 | - CONFIG_BOARD_EARLY_INIT_R: Call board_early_init_r() |
3379 | - CONFIG_BOARD_LATE_INIT: Call board_late_init() | 3385 | - CONFIG_BOARD_LATE_INIT: Call board_late_init() |
3380 | - CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() | 3386 | - CONFIG_BOARD_POSTCLK_INIT: Call board_postclk_init() |
3381 | 3387 | ||
3382 | Configuration Settings: | 3388 | Configuration Settings: |
3383 | ----------------------- | 3389 | ----------------------- |
3384 | 3390 | ||
3385 | - CONFIG_SYS_LONGHELP: Defined when you want long help messages included; | 3391 | - CONFIG_SYS_LONGHELP: Defined when you want long help messages included; |
3386 | undefine this when you're short of memory. | 3392 | undefine this when you're short of memory. |
3387 | 3393 | ||
3388 | - CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default | 3394 | - CONFIG_SYS_HELP_CMD_WIDTH: Defined when you want to override the default |
3389 | width of the commands listed in the 'help' command output. | 3395 | width of the commands listed in the 'help' command output. |
3390 | 3396 | ||
3391 | - CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to | 3397 | - CONFIG_SYS_PROMPT: This is what U-Boot prints on the console to |
3392 | prompt for user input. | 3398 | prompt for user input. |
3393 | 3399 | ||
3394 | - CONFIG_SYS_CBSIZE: Buffer size for input from the Console | 3400 | - CONFIG_SYS_CBSIZE: Buffer size for input from the Console |
3395 | 3401 | ||
3396 | - CONFIG_SYS_PBSIZE: Buffer size for Console output | 3402 | - CONFIG_SYS_PBSIZE: Buffer size for Console output |
3397 | 3403 | ||
3398 | - CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands | 3404 | - CONFIG_SYS_MAXARGS: max. Number of arguments accepted for monitor commands |
3399 | 3405 | ||
3400 | - CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to | 3406 | - CONFIG_SYS_BARGSIZE: Buffer size for Boot Arguments which are passed to |
3401 | the application (usually a Linux kernel) when it is | 3407 | the application (usually a Linux kernel) when it is |
3402 | booted | 3408 | booted |
3403 | 3409 | ||
3404 | - CONFIG_SYS_BAUDRATE_TABLE: | 3410 | - CONFIG_SYS_BAUDRATE_TABLE: |
3405 | List of legal baudrate settings for this board. | 3411 | List of legal baudrate settings for this board. |
3406 | 3412 | ||
3407 | - CONFIG_SYS_CONSOLE_INFO_QUIET | 3413 | - CONFIG_SYS_CONSOLE_INFO_QUIET |
3408 | Suppress display of console information at boot. | 3414 | Suppress display of console information at boot. |
3409 | 3415 | ||
3410 | - CONFIG_SYS_CONSOLE_IS_IN_ENV | 3416 | - CONFIG_SYS_CONSOLE_IS_IN_ENV |
3411 | If the board specific function | 3417 | If the board specific function |
3412 | extern int overwrite_console (void); | 3418 | extern int overwrite_console (void); |
3413 | returns 1, the stdin, stderr and stdout are switched to the | 3419 | returns 1, the stdin, stderr and stdout are switched to the |
3414 | serial port, else the settings in the environment are used. | 3420 | serial port, else the settings in the environment are used. |
3415 | 3421 | ||
3416 | - CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE | 3422 | - CONFIG_SYS_CONSOLE_OVERWRITE_ROUTINE |
3417 | Enable the call to overwrite_console(). | 3423 | Enable the call to overwrite_console(). |
3418 | 3424 | ||
3419 | - CONFIG_SYS_CONSOLE_ENV_OVERWRITE | 3425 | - CONFIG_SYS_CONSOLE_ENV_OVERWRITE |
3420 | Enable overwrite of previous console environment settings. | 3426 | Enable overwrite of previous console environment settings. |
3421 | 3427 | ||
3422 | - CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: | 3428 | - CONFIG_SYS_MEMTEST_START, CONFIG_SYS_MEMTEST_END: |
3423 | Begin and End addresses of the area used by the | 3429 | Begin and End addresses of the area used by the |
3424 | simple memory test. | 3430 | simple memory test. |
3425 | 3431 | ||
3426 | - CONFIG_SYS_ALT_MEMTEST: | 3432 | - CONFIG_SYS_ALT_MEMTEST: |
3427 | Enable an alternate, more extensive memory test. | 3433 | Enable an alternate, more extensive memory test. |
3428 | 3434 | ||
3429 | - CONFIG_SYS_MEMTEST_SCRATCH: | 3435 | - CONFIG_SYS_MEMTEST_SCRATCH: |
3430 | Scratch address used by the alternate memory test | 3436 | Scratch address used by the alternate memory test |
3431 | You only need to set this if address zero isn't writeable | 3437 | You only need to set this if address zero isn't writeable |
3432 | 3438 | ||
3433 | - CONFIG_SYS_MEM_TOP_HIDE (PPC only): | 3439 | - CONFIG_SYS_MEM_TOP_HIDE (PPC only): |
3434 | If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, | 3440 | If CONFIG_SYS_MEM_TOP_HIDE is defined in the board config header, |
3435 | this specified memory area will get subtracted from the top | 3441 | this specified memory area will get subtracted from the top |
3436 | (end) of RAM and won't get "touched" at all by U-Boot. By | 3442 | (end) of RAM and won't get "touched" at all by U-Boot. By |
3437 | fixing up gd->ram_size the Linux kernel should gets passed | 3443 | fixing up gd->ram_size the Linux kernel should gets passed |
3438 | the now "corrected" memory size and won't touch it either. | 3444 | the now "corrected" memory size and won't touch it either. |
3439 | This should work for arch/ppc and arch/powerpc. Only Linux | 3445 | This should work for arch/ppc and arch/powerpc. Only Linux |
3440 | board ports in arch/powerpc with bootwrapper support that | 3446 | board ports in arch/powerpc with bootwrapper support that |
3441 | recalculate the memory size from the SDRAM controller setup | 3447 | recalculate the memory size from the SDRAM controller setup |
3442 | will have to get fixed in Linux additionally. | 3448 | will have to get fixed in Linux additionally. |
3443 | 3449 | ||
3444 | This option can be used as a workaround for the 440EPx/GRx | 3450 | This option can be used as a workaround for the 440EPx/GRx |
3445 | CHIP 11 errata where the last 256 bytes in SDRAM shouldn't | 3451 | CHIP 11 errata where the last 256 bytes in SDRAM shouldn't |
3446 | be touched. | 3452 | be touched. |
3447 | 3453 | ||
3448 | WARNING: Please make sure that this value is a multiple of | 3454 | WARNING: Please make sure that this value is a multiple of |
3449 | the Linux page size (normally 4k). If this is not the case, | 3455 | the Linux page size (normally 4k). If this is not the case, |
3450 | then the end address of the Linux memory will be located at a | 3456 | then the end address of the Linux memory will be located at a |
3451 | non page size aligned address and this could cause major | 3457 | non page size aligned address and this could cause major |
3452 | problems. | 3458 | problems. |
3453 | 3459 | ||
3454 | - CONFIG_SYS_LOADS_BAUD_CHANGE: | 3460 | - CONFIG_SYS_LOADS_BAUD_CHANGE: |
3455 | Enable temporary baudrate change while serial download | 3461 | Enable temporary baudrate change while serial download |
3456 | 3462 | ||
3457 | - CONFIG_SYS_SDRAM_BASE: | 3463 | - CONFIG_SYS_SDRAM_BASE: |
3458 | Physical start address of SDRAM. _Must_ be 0 here. | 3464 | Physical start address of SDRAM. _Must_ be 0 here. |
3459 | 3465 | ||
3460 | - CONFIG_SYS_MBIO_BASE: | 3466 | - CONFIG_SYS_MBIO_BASE: |
3461 | Physical start address of Motherboard I/O (if using a | 3467 | Physical start address of Motherboard I/O (if using a |
3462 | Cogent motherboard) | 3468 | Cogent motherboard) |
3463 | 3469 | ||
3464 | - CONFIG_SYS_FLASH_BASE: | 3470 | - CONFIG_SYS_FLASH_BASE: |
3465 | Physical start address of Flash memory. | 3471 | Physical start address of Flash memory. |
3466 | 3472 | ||
3467 | - CONFIG_SYS_MONITOR_BASE: | 3473 | - CONFIG_SYS_MONITOR_BASE: |
3468 | Physical start address of boot monitor code (set by | 3474 | Physical start address of boot monitor code (set by |
3469 | make config files to be same as the text base address | 3475 | make config files to be same as the text base address |
3470 | (CONFIG_SYS_TEXT_BASE) used when linking) - same as | 3476 | (CONFIG_SYS_TEXT_BASE) used when linking) - same as |
3471 | CONFIG_SYS_FLASH_BASE when booting from flash. | 3477 | CONFIG_SYS_FLASH_BASE when booting from flash. |
3472 | 3478 | ||
3473 | - CONFIG_SYS_MONITOR_LEN: | 3479 | - CONFIG_SYS_MONITOR_LEN: |
3474 | Size of memory reserved for monitor code, used to | 3480 | Size of memory reserved for monitor code, used to |
3475 | determine _at_compile_time_ (!) if the environment is | 3481 | determine _at_compile_time_ (!) if the environment is |
3476 | embedded within the U-Boot image, or in a separate | 3482 | embedded within the U-Boot image, or in a separate |
3477 | flash sector. | 3483 | flash sector. |
3478 | 3484 | ||
3479 | - CONFIG_SYS_MALLOC_LEN: | 3485 | - CONFIG_SYS_MALLOC_LEN: |
3480 | Size of DRAM reserved for malloc() use. | 3486 | Size of DRAM reserved for malloc() use. |
3481 | 3487 | ||
3482 | - CONFIG_SYS_BOOTM_LEN: | 3488 | - CONFIG_SYS_BOOTM_LEN: |
3483 | Normally compressed uImages are limited to an | 3489 | Normally compressed uImages are limited to an |
3484 | uncompressed size of 8 MBytes. If this is not enough, | 3490 | uncompressed size of 8 MBytes. If this is not enough, |
3485 | you can define CONFIG_SYS_BOOTM_LEN in your board config file | 3491 | you can define CONFIG_SYS_BOOTM_LEN in your board config file |
3486 | to adjust this setting to your needs. | 3492 | to adjust this setting to your needs. |
3487 | 3493 | ||
3488 | - CONFIG_SYS_BOOTMAPSZ: | 3494 | - CONFIG_SYS_BOOTMAPSZ: |
3489 | Maximum size of memory mapped by the startup code of | 3495 | Maximum size of memory mapped by the startup code of |
3490 | the Linux kernel; all data that must be processed by | 3496 | the Linux kernel; all data that must be processed by |
3491 | the Linux kernel (bd_info, boot arguments, FDT blob if | 3497 | the Linux kernel (bd_info, boot arguments, FDT blob if |
3492 | used) must be put below this limit, unless "bootm_low" | 3498 | used) must be put below this limit, unless "bootm_low" |
3493 | environment variable is defined and non-zero. In such case | 3499 | environment variable is defined and non-zero. In such case |
3494 | all data for the Linux kernel must be between "bootm_low" | 3500 | all data for the Linux kernel must be between "bootm_low" |
3495 | and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment | 3501 | and "bootm_low" + CONFIG_SYS_BOOTMAPSZ. The environment |
3496 | variable "bootm_mapsize" will override the value of | 3502 | variable "bootm_mapsize" will override the value of |
3497 | CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, | 3503 | CONFIG_SYS_BOOTMAPSZ. If CONFIG_SYS_BOOTMAPSZ is undefined, |
3498 | then the value in "bootm_size" will be used instead. | 3504 | then the value in "bootm_size" will be used instead. |
3499 | 3505 | ||
3500 | - CONFIG_SYS_BOOT_RAMDISK_HIGH: | 3506 | - CONFIG_SYS_BOOT_RAMDISK_HIGH: |
3501 | Enable initrd_high functionality. If defined then the | 3507 | Enable initrd_high functionality. If defined then the |
3502 | initrd_high feature is enabled and the bootm ramdisk subcommand | 3508 | initrd_high feature is enabled and the bootm ramdisk subcommand |
3503 | is enabled. | 3509 | is enabled. |
3504 | 3510 | ||
3505 | - CONFIG_SYS_BOOT_GET_CMDLINE: | 3511 | - CONFIG_SYS_BOOT_GET_CMDLINE: |
3506 | Enables allocating and saving kernel cmdline in space between | 3512 | Enables allocating and saving kernel cmdline in space between |
3507 | "bootm_low" and "bootm_low" + BOOTMAPSZ. | 3513 | "bootm_low" and "bootm_low" + BOOTMAPSZ. |
3508 | 3514 | ||
3509 | - CONFIG_SYS_BOOT_GET_KBD: | 3515 | - CONFIG_SYS_BOOT_GET_KBD: |
3510 | Enables allocating and saving a kernel copy of the bd_info in | 3516 | Enables allocating and saving a kernel copy of the bd_info in |
3511 | space between "bootm_low" and "bootm_low" + BOOTMAPSZ. | 3517 | space between "bootm_low" and "bootm_low" + BOOTMAPSZ. |
3512 | 3518 | ||
3513 | - CONFIG_SYS_MAX_FLASH_BANKS: | 3519 | - CONFIG_SYS_MAX_FLASH_BANKS: |
3514 | Max number of Flash memory banks | 3520 | Max number of Flash memory banks |
3515 | 3521 | ||
3516 | - CONFIG_SYS_MAX_FLASH_SECT: | 3522 | - CONFIG_SYS_MAX_FLASH_SECT: |
3517 | Max number of sectors on a Flash chip | 3523 | Max number of sectors on a Flash chip |
3518 | 3524 | ||
3519 | - CONFIG_SYS_FLASH_ERASE_TOUT: | 3525 | - CONFIG_SYS_FLASH_ERASE_TOUT: |
3520 | Timeout for Flash erase operations (in ms) | 3526 | Timeout for Flash erase operations (in ms) |
3521 | 3527 | ||
3522 | - CONFIG_SYS_FLASH_WRITE_TOUT: | 3528 | - CONFIG_SYS_FLASH_WRITE_TOUT: |
3523 | Timeout for Flash write operations (in ms) | 3529 | Timeout for Flash write operations (in ms) |
3524 | 3530 | ||
3525 | - CONFIG_SYS_FLASH_LOCK_TOUT | 3531 | - CONFIG_SYS_FLASH_LOCK_TOUT |
3526 | Timeout for Flash set sector lock bit operation (in ms) | 3532 | Timeout for Flash set sector lock bit operation (in ms) |
3527 | 3533 | ||
3528 | - CONFIG_SYS_FLASH_UNLOCK_TOUT | 3534 | - CONFIG_SYS_FLASH_UNLOCK_TOUT |
3529 | Timeout for Flash clear lock bits operation (in ms) | 3535 | Timeout for Flash clear lock bits operation (in ms) |
3530 | 3536 | ||
3531 | - CONFIG_SYS_FLASH_PROTECTION | 3537 | - CONFIG_SYS_FLASH_PROTECTION |
3532 | If defined, hardware flash sectors protection is used | 3538 | If defined, hardware flash sectors protection is used |
3533 | instead of U-Boot software protection. | 3539 | instead of U-Boot software protection. |
3534 | 3540 | ||
3535 | - CONFIG_SYS_DIRECT_FLASH_TFTP: | 3541 | - CONFIG_SYS_DIRECT_FLASH_TFTP: |
3536 | 3542 | ||
3537 | Enable TFTP transfers directly to flash memory; | 3543 | Enable TFTP transfers directly to flash memory; |
3538 | without this option such a download has to be | 3544 | without this option such a download has to be |
3539 | performed in two steps: (1) download to RAM, and (2) | 3545 | performed in two steps: (1) download to RAM, and (2) |
3540 | copy from RAM to flash. | 3546 | copy from RAM to flash. |
3541 | 3547 | ||
3542 | The two-step approach is usually more reliable, since | 3548 | The two-step approach is usually more reliable, since |
3543 | you can check if the download worked before you erase | 3549 | you can check if the download worked before you erase |
3544 | the flash, but in some situations (when system RAM is | 3550 | the flash, but in some situations (when system RAM is |
3545 | too limited to allow for a temporary copy of the | 3551 | too limited to allow for a temporary copy of the |
3546 | downloaded image) this option may be very useful. | 3552 | downloaded image) this option may be very useful. |
3547 | 3553 | ||
3548 | - CONFIG_SYS_FLASH_CFI: | 3554 | - CONFIG_SYS_FLASH_CFI: |
3549 | Define if the flash driver uses extra elements in the | 3555 | Define if the flash driver uses extra elements in the |
3550 | common flash structure for storing flash geometry. | 3556 | common flash structure for storing flash geometry. |
3551 | 3557 | ||
3552 | - CONFIG_FLASH_CFI_DRIVER | 3558 | - CONFIG_FLASH_CFI_DRIVER |
3553 | This option also enables the building of the cfi_flash driver | 3559 | This option also enables the building of the cfi_flash driver |
3554 | in the drivers directory | 3560 | in the drivers directory |
3555 | 3561 | ||
3556 | - CONFIG_FLASH_CFI_MTD | 3562 | - CONFIG_FLASH_CFI_MTD |
3557 | This option enables the building of the cfi_mtd driver | 3563 | This option enables the building of the cfi_mtd driver |
3558 | in the drivers directory. The driver exports CFI flash | 3564 | in the drivers directory. The driver exports CFI flash |
3559 | to the MTD layer. | 3565 | to the MTD layer. |
3560 | 3566 | ||
3561 | - CONFIG_SYS_FLASH_USE_BUFFER_WRITE | 3567 | - CONFIG_SYS_FLASH_USE_BUFFER_WRITE |
3562 | Use buffered writes to flash. | 3568 | Use buffered writes to flash. |
3563 | 3569 | ||
3564 | - CONFIG_FLASH_SPANSION_S29WS_N | 3570 | - CONFIG_FLASH_SPANSION_S29WS_N |
3565 | s29ws-n MirrorBit flash has non-standard addresses for buffered | 3571 | s29ws-n MirrorBit flash has non-standard addresses for buffered |
3566 | write commands. | 3572 | write commands. |
3567 | 3573 | ||
3568 | - CONFIG_SYS_FLASH_QUIET_TEST | 3574 | - CONFIG_SYS_FLASH_QUIET_TEST |
3569 | If this option is defined, the common CFI flash doesn't | 3575 | If this option is defined, the common CFI flash doesn't |
3570 | print it's warning upon not recognized FLASH banks. This | 3576 | print it's warning upon not recognized FLASH banks. This |
3571 | is useful, if some of the configured banks are only | 3577 | is useful, if some of the configured banks are only |
3572 | optionally available. | 3578 | optionally available. |
3573 | 3579 | ||
3574 | - CONFIG_FLASH_SHOW_PROGRESS | 3580 | - CONFIG_FLASH_SHOW_PROGRESS |
3575 | If defined (must be an integer), print out countdown | 3581 | If defined (must be an integer), print out countdown |
3576 | digits and dots. Recommended value: 45 (9..1) for 80 | 3582 | digits and dots. Recommended value: 45 (9..1) for 80 |
3577 | column displays, 15 (3..1) for 40 column displays. | 3583 | column displays, 15 (3..1) for 40 column displays. |
3578 | 3584 | ||
3579 | - CONFIG_FLASH_VERIFY | 3585 | - CONFIG_FLASH_VERIFY |
3580 | If defined, the content of the flash (destination) is compared | 3586 | If defined, the content of the flash (destination) is compared |
3581 | against the source after the write operation. An error message | 3587 | against the source after the write operation. An error message |
3582 | will be printed when the contents are not identical. | 3588 | will be printed when the contents are not identical. |
3583 | Please note that this option is useless in nearly all cases, | 3589 | Please note that this option is useless in nearly all cases, |
3584 | since such flash programming errors usually are detected earlier | 3590 | since such flash programming errors usually are detected earlier |
3585 | while unprotecting/erasing/programming. Please only enable | 3591 | while unprotecting/erasing/programming. Please only enable |
3586 | this option if you really know what you are doing. | 3592 | this option if you really know what you are doing. |
3587 | 3593 | ||
3588 | - CONFIG_SYS_RX_ETH_BUFFER: | 3594 | - CONFIG_SYS_RX_ETH_BUFFER: |
3589 | Defines the number of Ethernet receive buffers. On some | 3595 | Defines the number of Ethernet receive buffers. On some |
3590 | Ethernet controllers it is recommended to set this value | 3596 | Ethernet controllers it is recommended to set this value |
3591 | to 8 or even higher (EEPRO100 or 405 EMAC), since all | 3597 | to 8 or even higher (EEPRO100 or 405 EMAC), since all |
3592 | buffers can be full shortly after enabling the interface | 3598 | buffers can be full shortly after enabling the interface |
3593 | on high Ethernet traffic. | 3599 | on high Ethernet traffic. |
3594 | Defaults to 4 if not defined. | 3600 | Defaults to 4 if not defined. |
3595 | 3601 | ||
3596 | - CONFIG_ENV_MAX_ENTRIES | 3602 | - CONFIG_ENV_MAX_ENTRIES |
3597 | 3603 | ||
3598 | Maximum number of entries in the hash table that is used | 3604 | Maximum number of entries in the hash table that is used |
3599 | internally to store the environment settings. The default | 3605 | internally to store the environment settings. The default |
3600 | setting is supposed to be generous and should work in most | 3606 | setting is supposed to be generous and should work in most |
3601 | cases. This setting can be used to tune behaviour; see | 3607 | cases. This setting can be used to tune behaviour; see |
3602 | lib/hashtable.c for details. | 3608 | lib/hashtable.c for details. |
3603 | 3609 | ||
3604 | - CONFIG_ENV_FLAGS_LIST_DEFAULT | 3610 | - CONFIG_ENV_FLAGS_LIST_DEFAULT |
3605 | - CONFIG_ENV_FLAGS_LIST_STATIC | 3611 | - CONFIG_ENV_FLAGS_LIST_STATIC |
3606 | Enable validation of the values given to environment variables when | 3612 | Enable validation of the values given to environment variables when |
3607 | calling env set. Variables can be restricted to only decimal, | 3613 | calling env set. Variables can be restricted to only decimal, |
3608 | hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, | 3614 | hexadecimal, or boolean. If CONFIG_CMD_NET is also defined, |
3609 | the variables can also be restricted to IP address or MAC address. | 3615 | the variables can also be restricted to IP address or MAC address. |
3610 | 3616 | ||
3611 | The format of the list is: | 3617 | The format of the list is: |
3612 | type_attribute = [s|d|x|b|i|m] | 3618 | type_attribute = [s|d|x|b|i|m] |
3613 | access_atribute = [a|r|o|c] | 3619 | access_atribute = [a|r|o|c] |
3614 | attributes = type_attribute[access_atribute] | 3620 | attributes = type_attribute[access_atribute] |
3615 | entry = variable_name[:attributes] | 3621 | entry = variable_name[:attributes] |
3616 | list = entry[,list] | 3622 | list = entry[,list] |
3617 | 3623 | ||
3618 | The type attributes are: | 3624 | The type attributes are: |
3619 | s - String (default) | 3625 | s - String (default) |
3620 | d - Decimal | 3626 | d - Decimal |
3621 | x - Hexadecimal | 3627 | x - Hexadecimal |
3622 | b - Boolean ([1yYtT|0nNfF]) | 3628 | b - Boolean ([1yYtT|0nNfF]) |
3623 | i - IP address | 3629 | i - IP address |
3624 | m - MAC address | 3630 | m - MAC address |
3625 | 3631 | ||
3626 | The access attributes are: | 3632 | The access attributes are: |
3627 | a - Any (default) | 3633 | a - Any (default) |
3628 | r - Read-only | 3634 | r - Read-only |
3629 | o - Write-once | 3635 | o - Write-once |
3630 | c - Change-default | 3636 | c - Change-default |
3631 | 3637 | ||
3632 | - CONFIG_ENV_FLAGS_LIST_DEFAULT | 3638 | - CONFIG_ENV_FLAGS_LIST_DEFAULT |
3633 | Define this to a list (string) to define the ".flags" | 3639 | Define this to a list (string) to define the ".flags" |
3634 | envirnoment variable in the default or embedded environment. | 3640 | envirnoment variable in the default or embedded environment. |
3635 | 3641 | ||
3636 | - CONFIG_ENV_FLAGS_LIST_STATIC | 3642 | - CONFIG_ENV_FLAGS_LIST_STATIC |
3637 | Define this to a list (string) to define validation that | 3643 | Define this to a list (string) to define validation that |
3638 | should be done if an entry is not found in the ".flags" | 3644 | should be done if an entry is not found in the ".flags" |
3639 | environment variable. To override a setting in the static | 3645 | environment variable. To override a setting in the static |
3640 | list, simply add an entry for the same variable name to the | 3646 | list, simply add an entry for the same variable name to the |
3641 | ".flags" variable. | 3647 | ".flags" variable. |
3642 | 3648 | ||
3643 | - CONFIG_ENV_ACCESS_IGNORE_FORCE | 3649 | - CONFIG_ENV_ACCESS_IGNORE_FORCE |
3644 | If defined, don't allow the -f switch to env set override variable | 3650 | If defined, don't allow the -f switch to env set override variable |
3645 | access flags. | 3651 | access flags. |
3646 | 3652 | ||
3647 | - CONFIG_SYS_GENERIC_BOARD | 3653 | - CONFIG_SYS_GENERIC_BOARD |
3648 | This selects the architecture-generic board system instead of the | 3654 | This selects the architecture-generic board system instead of the |
3649 | architecture-specific board files. It is intended to move boards | 3655 | architecture-specific board files. It is intended to move boards |
3650 | to this new framework over time. Defining this will disable the | 3656 | to this new framework over time. Defining this will disable the |
3651 | arch/foo/lib/board.c file and use common/board_f.c and | 3657 | arch/foo/lib/board.c file and use common/board_f.c and |
3652 | common/board_r.c instead. To use this option your architecture | 3658 | common/board_r.c instead. To use this option your architecture |
3653 | must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in | 3659 | must support it (i.e. must define __HAVE_ARCH_GENERIC_BOARD in |
3654 | its config.mk file). If you find problems enabling this option on | 3660 | its config.mk file). If you find problems enabling this option on |
3655 | your board please report the problem and send patches! | 3661 | your board please report the problem and send patches! |
3656 | 3662 | ||
3657 | - CONFIG_SYS_SYM_OFFSETS | 3663 | - CONFIG_SYS_SYM_OFFSETS |
3658 | This is set by architectures that use offsets for link symbols | 3664 | This is set by architectures that use offsets for link symbols |
3659 | instead of absolute values. So bss_start is obtained using an | 3665 | instead of absolute values. So bss_start is obtained using an |
3660 | offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than | 3666 | offset _bss_start_ofs from CONFIG_SYS_TEXT_BASE, rather than |
3661 | directly. You should not need to touch this setting. | 3667 | directly. You should not need to touch this setting. |
3662 | 3668 | ||
3663 | - CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) | 3669 | - CONFIG_OMAP_PLATFORM_RESET_TIME_MAX_USEC (OMAP only) |
3664 | This is set by OMAP boards for the max time that reset should | 3670 | This is set by OMAP boards for the max time that reset should |
3665 | be asserted. See doc/README.omap-reset-time for details on how | 3671 | be asserted. See doc/README.omap-reset-time for details on how |
3666 | the value can be calulated on a given board. | 3672 | the value can be calulated on a given board. |
3667 | 3673 | ||
3668 | The following definitions that deal with the placement and management | 3674 | The following definitions that deal with the placement and management |
3669 | of environment data (variable area); in general, we support the | 3675 | of environment data (variable area); in general, we support the |
3670 | following configurations: | 3676 | following configurations: |
3671 | 3677 | ||
3672 | - CONFIG_BUILD_ENVCRC: | 3678 | - CONFIG_BUILD_ENVCRC: |
3673 | 3679 | ||
3674 | Builds up envcrc with the target environment so that external utils | 3680 | Builds up envcrc with the target environment so that external utils |
3675 | may easily extract it and embed it in final U-Boot images. | 3681 | may easily extract it and embed it in final U-Boot images. |
3676 | 3682 | ||
3677 | - CONFIG_ENV_IS_IN_FLASH: | 3683 | - CONFIG_ENV_IS_IN_FLASH: |
3678 | 3684 | ||
3679 | Define this if the environment is in flash memory. | 3685 | Define this if the environment is in flash memory. |
3680 | 3686 | ||
3681 | a) The environment occupies one whole flash sector, which is | 3687 | a) The environment occupies one whole flash sector, which is |
3682 | "embedded" in the text segment with the U-Boot code. This | 3688 | "embedded" in the text segment with the U-Boot code. This |
3683 | happens usually with "bottom boot sector" or "top boot | 3689 | happens usually with "bottom boot sector" or "top boot |
3684 | sector" type flash chips, which have several smaller | 3690 | sector" type flash chips, which have several smaller |
3685 | sectors at the start or the end. For instance, such a | 3691 | sectors at the start or the end. For instance, such a |
3686 | layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In | 3692 | layout can have sector sizes of 8, 2x4, 16, Nx32 kB. In |
3687 | such a case you would place the environment in one of the | 3693 | such a case you would place the environment in one of the |
3688 | 4 kB sectors - with U-Boot code before and after it. With | 3694 | 4 kB sectors - with U-Boot code before and after it. With |
3689 | "top boot sector" type flash chips, you would put the | 3695 | "top boot sector" type flash chips, you would put the |
3690 | environment in one of the last sectors, leaving a gap | 3696 | environment in one of the last sectors, leaving a gap |
3691 | between U-Boot and the environment. | 3697 | between U-Boot and the environment. |
3692 | 3698 | ||
3693 | - CONFIG_ENV_OFFSET: | 3699 | - CONFIG_ENV_OFFSET: |
3694 | 3700 | ||
3695 | Offset of environment data (variable area) to the | 3701 | Offset of environment data (variable area) to the |
3696 | beginning of flash memory; for instance, with bottom boot | 3702 | beginning of flash memory; for instance, with bottom boot |
3697 | type flash chips the second sector can be used: the offset | 3703 | type flash chips the second sector can be used: the offset |
3698 | for this sector is given here. | 3704 | for this sector is given here. |
3699 | 3705 | ||
3700 | CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. | 3706 | CONFIG_ENV_OFFSET is used relative to CONFIG_SYS_FLASH_BASE. |
3701 | 3707 | ||
3702 | - CONFIG_ENV_ADDR: | 3708 | - CONFIG_ENV_ADDR: |
3703 | 3709 | ||
3704 | This is just another way to specify the start address of | 3710 | This is just another way to specify the start address of |
3705 | the flash sector containing the environment (instead of | 3711 | the flash sector containing the environment (instead of |
3706 | CONFIG_ENV_OFFSET). | 3712 | CONFIG_ENV_OFFSET). |
3707 | 3713 | ||
3708 | - CONFIG_ENV_SECT_SIZE: | 3714 | - CONFIG_ENV_SECT_SIZE: |
3709 | 3715 | ||
3710 | Size of the sector containing the environment. | 3716 | Size of the sector containing the environment. |
3711 | 3717 | ||
3712 | 3718 | ||
3713 | b) Sometimes flash chips have few, equal sized, BIG sectors. | 3719 | b) Sometimes flash chips have few, equal sized, BIG sectors. |
3714 | In such a case you don't want to spend a whole sector for | 3720 | In such a case you don't want to spend a whole sector for |
3715 | the environment. | 3721 | the environment. |
3716 | 3722 | ||
3717 | - CONFIG_ENV_SIZE: | 3723 | - CONFIG_ENV_SIZE: |
3718 | 3724 | ||
3719 | If you use this in combination with CONFIG_ENV_IS_IN_FLASH | 3725 | If you use this in combination with CONFIG_ENV_IS_IN_FLASH |
3720 | and CONFIG_ENV_SECT_SIZE, you can specify to use only a part | 3726 | and CONFIG_ENV_SECT_SIZE, you can specify to use only a part |
3721 | of this flash sector for the environment. This saves | 3727 | of this flash sector for the environment. This saves |
3722 | memory for the RAM copy of the environment. | 3728 | memory for the RAM copy of the environment. |
3723 | 3729 | ||
3724 | It may also save flash memory if you decide to use this | 3730 | It may also save flash memory if you decide to use this |
3725 | when your environment is "embedded" within U-Boot code, | 3731 | when your environment is "embedded" within U-Boot code, |
3726 | since then the remainder of the flash sector could be used | 3732 | since then the remainder of the flash sector could be used |
3727 | for U-Boot code. It should be pointed out that this is | 3733 | for U-Boot code. It should be pointed out that this is |
3728 | STRONGLY DISCOURAGED from a robustness point of view: | 3734 | STRONGLY DISCOURAGED from a robustness point of view: |
3729 | updating the environment in flash makes it always | 3735 | updating the environment in flash makes it always |
3730 | necessary to erase the WHOLE sector. If something goes | 3736 | necessary to erase the WHOLE sector. If something goes |
3731 | wrong before the contents has been restored from a copy in | 3737 | wrong before the contents has been restored from a copy in |
3732 | RAM, your target system will be dead. | 3738 | RAM, your target system will be dead. |
3733 | 3739 | ||
3734 | - CONFIG_ENV_ADDR_REDUND | 3740 | - CONFIG_ENV_ADDR_REDUND |
3735 | CONFIG_ENV_SIZE_REDUND | 3741 | CONFIG_ENV_SIZE_REDUND |
3736 | 3742 | ||
3737 | These settings describe a second storage area used to hold | 3743 | These settings describe a second storage area used to hold |
3738 | a redundant copy of the environment data, so that there is | 3744 | a redundant copy of the environment data, so that there is |
3739 | a valid backup copy in case there is a power failure during | 3745 | a valid backup copy in case there is a power failure during |
3740 | a "saveenv" operation. | 3746 | a "saveenv" operation. |
3741 | 3747 | ||
3742 | BE CAREFUL! Any changes to the flash layout, and some changes to the | 3748 | BE CAREFUL! Any changes to the flash layout, and some changes to the |
3743 | source code will make it necessary to adapt <board>/u-boot.lds* | 3749 | source code will make it necessary to adapt <board>/u-boot.lds* |
3744 | accordingly! | 3750 | accordingly! |
3745 | 3751 | ||
3746 | 3752 | ||
3747 | - CONFIG_ENV_IS_IN_NVRAM: | 3753 | - CONFIG_ENV_IS_IN_NVRAM: |
3748 | 3754 | ||
3749 | Define this if you have some non-volatile memory device | 3755 | Define this if you have some non-volatile memory device |
3750 | (NVRAM, battery buffered SRAM) which you want to use for the | 3756 | (NVRAM, battery buffered SRAM) which you want to use for the |
3751 | environment. | 3757 | environment. |
3752 | 3758 | ||
3753 | - CONFIG_ENV_ADDR: | 3759 | - CONFIG_ENV_ADDR: |
3754 | - CONFIG_ENV_SIZE: | 3760 | - CONFIG_ENV_SIZE: |
3755 | 3761 | ||
3756 | These two #defines are used to determine the memory area you | 3762 | These two #defines are used to determine the memory area you |
3757 | want to use for environment. It is assumed that this memory | 3763 | want to use for environment. It is assumed that this memory |
3758 | can just be read and written to, without any special | 3764 | can just be read and written to, without any special |
3759 | provision. | 3765 | provision. |
3760 | 3766 | ||
3761 | BE CAREFUL! The first access to the environment happens quite early | 3767 | BE CAREFUL! The first access to the environment happens quite early |
3762 | in U-Boot initalization (when we try to get the setting of for the | 3768 | in U-Boot initalization (when we try to get the setting of for the |
3763 | console baudrate). You *MUST* have mapped your NVRAM area then, or | 3769 | console baudrate). You *MUST* have mapped your NVRAM area then, or |
3764 | U-Boot will hang. | 3770 | U-Boot will hang. |
3765 | 3771 | ||
3766 | Please note that even with NVRAM we still use a copy of the | 3772 | Please note that even with NVRAM we still use a copy of the |
3767 | environment in RAM: we could work on NVRAM directly, but we want to | 3773 | environment in RAM: we could work on NVRAM directly, but we want to |
3768 | keep settings there always unmodified except somebody uses "saveenv" | 3774 | keep settings there always unmodified except somebody uses "saveenv" |
3769 | to save the current settings. | 3775 | to save the current settings. |
3770 | 3776 | ||
3771 | 3777 | ||
3772 | - CONFIG_ENV_IS_IN_EEPROM: | 3778 | - CONFIG_ENV_IS_IN_EEPROM: |
3773 | 3779 | ||
3774 | Use this if you have an EEPROM or similar serial access | 3780 | Use this if you have an EEPROM or similar serial access |
3775 | device and a driver for it. | 3781 | device and a driver for it. |
3776 | 3782 | ||
3777 | - CONFIG_ENV_OFFSET: | 3783 | - CONFIG_ENV_OFFSET: |
3778 | - CONFIG_ENV_SIZE: | 3784 | - CONFIG_ENV_SIZE: |
3779 | 3785 | ||
3780 | These two #defines specify the offset and size of the | 3786 | These two #defines specify the offset and size of the |
3781 | environment area within the total memory of your EEPROM. | 3787 | environment area within the total memory of your EEPROM. |
3782 | 3788 | ||
3783 | - CONFIG_SYS_I2C_EEPROM_ADDR: | 3789 | - CONFIG_SYS_I2C_EEPROM_ADDR: |
3784 | If defined, specified the chip address of the EEPROM device. | 3790 | If defined, specified the chip address of the EEPROM device. |
3785 | The default address is zero. | 3791 | The default address is zero. |
3786 | 3792 | ||
3787 | - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: | 3793 | - CONFIG_SYS_EEPROM_PAGE_WRITE_BITS: |
3788 | If defined, the number of bits used to address bytes in a | 3794 | If defined, the number of bits used to address bytes in a |
3789 | single page in the EEPROM device. A 64 byte page, for example | 3795 | single page in the EEPROM device. A 64 byte page, for example |
3790 | would require six bits. | 3796 | would require six bits. |
3791 | 3797 | ||
3792 | - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: | 3798 | - CONFIG_SYS_EEPROM_PAGE_WRITE_DELAY_MS: |
3793 | If defined, the number of milliseconds to delay between | 3799 | If defined, the number of milliseconds to delay between |
3794 | page writes. The default is zero milliseconds. | 3800 | page writes. The default is zero milliseconds. |
3795 | 3801 | ||
3796 | - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: | 3802 | - CONFIG_SYS_I2C_EEPROM_ADDR_LEN: |
3797 | The length in bytes of the EEPROM memory array address. Note | 3803 | The length in bytes of the EEPROM memory array address. Note |
3798 | that this is NOT the chip address length! | 3804 | that this is NOT the chip address length! |
3799 | 3805 | ||
3800 | - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: | 3806 | - CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW: |
3801 | EEPROM chips that implement "address overflow" are ones | 3807 | EEPROM chips that implement "address overflow" are ones |
3802 | like Catalyst 24WC04/08/16 which has 9/10/11 bits of | 3808 | like Catalyst 24WC04/08/16 which has 9/10/11 bits of |
3803 | address and the extra bits end up in the "chip address" bit | 3809 | address and the extra bits end up in the "chip address" bit |
3804 | slots. This makes a 24WC08 (1Kbyte) chip look like four 256 | 3810 | slots. This makes a 24WC08 (1Kbyte) chip look like four 256 |
3805 | byte chips. | 3811 | byte chips. |
3806 | 3812 | ||
3807 | Note that we consider the length of the address field to | 3813 | Note that we consider the length of the address field to |
3808 | still be one byte because the extra address bits are hidden | 3814 | still be one byte because the extra address bits are hidden |
3809 | in the chip address. | 3815 | in the chip address. |
3810 | 3816 | ||
3811 | - CONFIG_SYS_EEPROM_SIZE: | 3817 | - CONFIG_SYS_EEPROM_SIZE: |
3812 | The size in bytes of the EEPROM device. | 3818 | The size in bytes of the EEPROM device. |
3813 | 3819 | ||
3814 | - CONFIG_ENV_EEPROM_IS_ON_I2C | 3820 | - CONFIG_ENV_EEPROM_IS_ON_I2C |
3815 | define this, if you have I2C and SPI activated, and your | 3821 | define this, if you have I2C and SPI activated, and your |
3816 | EEPROM, which holds the environment, is on the I2C bus. | 3822 | EEPROM, which holds the environment, is on the I2C bus. |
3817 | 3823 | ||
3818 | - CONFIG_I2C_ENV_EEPROM_BUS | 3824 | - CONFIG_I2C_ENV_EEPROM_BUS |
3819 | if you have an Environment on an EEPROM reached over | 3825 | if you have an Environment on an EEPROM reached over |
3820 | I2C muxes, you can define here, how to reach this | 3826 | I2C muxes, you can define here, how to reach this |
3821 | EEPROM. For example: | 3827 | EEPROM. For example: |
3822 | 3828 | ||
3823 | #define CONFIG_I2C_ENV_EEPROM_BUS 1 | 3829 | #define CONFIG_I2C_ENV_EEPROM_BUS 1 |
3824 | 3830 | ||
3825 | EEPROM which holds the environment, is reached over | 3831 | EEPROM which holds the environment, is reached over |
3826 | a pca9547 i2c mux with address 0x70, channel 3. | 3832 | a pca9547 i2c mux with address 0x70, channel 3. |
3827 | 3833 | ||
3828 | - CONFIG_ENV_IS_IN_DATAFLASH: | 3834 | - CONFIG_ENV_IS_IN_DATAFLASH: |
3829 | 3835 | ||
3830 | Define this if you have a DataFlash memory device which you | 3836 | Define this if you have a DataFlash memory device which you |
3831 | want to use for the environment. | 3837 | want to use for the environment. |
3832 | 3838 | ||
3833 | - CONFIG_ENV_OFFSET: | 3839 | - CONFIG_ENV_OFFSET: |
3834 | - CONFIG_ENV_ADDR: | 3840 | - CONFIG_ENV_ADDR: |
3835 | - CONFIG_ENV_SIZE: | 3841 | - CONFIG_ENV_SIZE: |
3836 | 3842 | ||
3837 | These three #defines specify the offset and size of the | 3843 | These three #defines specify the offset and size of the |
3838 | environment area within the total memory of your DataFlash placed | 3844 | environment area within the total memory of your DataFlash placed |
3839 | at the specified address. | 3845 | at the specified address. |
3840 | 3846 | ||
3841 | - CONFIG_ENV_IS_IN_REMOTE: | 3847 | - CONFIG_ENV_IS_IN_REMOTE: |
3842 | 3848 | ||
3843 | Define this if you have a remote memory space which you | 3849 | Define this if you have a remote memory space which you |
3844 | want to use for the local device's environment. | 3850 | want to use for the local device's environment. |
3845 | 3851 | ||
3846 | - CONFIG_ENV_ADDR: | 3852 | - CONFIG_ENV_ADDR: |
3847 | - CONFIG_ENV_SIZE: | 3853 | - CONFIG_ENV_SIZE: |
3848 | 3854 | ||
3849 | These two #defines specify the address and size of the | 3855 | These two #defines specify the address and size of the |
3850 | environment area within the remote memory space. The | 3856 | environment area within the remote memory space. The |
3851 | local device can get the environment from remote memory | 3857 | local device can get the environment from remote memory |
3852 | space by SRIO or PCIE links. | 3858 | space by SRIO or PCIE links. |
3853 | 3859 | ||
3854 | BE CAREFUL! For some special cases, the local device can not use | 3860 | BE CAREFUL! For some special cases, the local device can not use |
3855 | "saveenv" command. For example, the local device will get the | 3861 | "saveenv" command. For example, the local device will get the |
3856 | environment stored in a remote NOR flash by SRIO or PCIE link, | 3862 | environment stored in a remote NOR flash by SRIO or PCIE link, |
3857 | but it can not erase, write this NOR flash by SRIO or PCIE interface. | 3863 | but it can not erase, write this NOR flash by SRIO or PCIE interface. |
3858 | 3864 | ||
3859 | - CONFIG_ENV_IS_IN_NAND: | 3865 | - CONFIG_ENV_IS_IN_NAND: |
3860 | 3866 | ||
3861 | Define this if you have a NAND device which you want to use | 3867 | Define this if you have a NAND device which you want to use |
3862 | for the environment. | 3868 | for the environment. |
3863 | 3869 | ||
3864 | - CONFIG_ENV_OFFSET: | 3870 | - CONFIG_ENV_OFFSET: |
3865 | - CONFIG_ENV_SIZE: | 3871 | - CONFIG_ENV_SIZE: |
3866 | 3872 | ||
3867 | These two #defines specify the offset and size of the environment | 3873 | These two #defines specify the offset and size of the environment |
3868 | area within the first NAND device. CONFIG_ENV_OFFSET must be | 3874 | area within the first NAND device. CONFIG_ENV_OFFSET must be |
3869 | aligned to an erase block boundary. | 3875 | aligned to an erase block boundary. |
3870 | 3876 | ||
3871 | - CONFIG_ENV_OFFSET_REDUND (optional): | 3877 | - CONFIG_ENV_OFFSET_REDUND (optional): |
3872 | 3878 | ||
3873 | This setting describes a second storage area of CONFIG_ENV_SIZE | 3879 | This setting describes a second storage area of CONFIG_ENV_SIZE |
3874 | size used to hold a redundant copy of the environment data, so | 3880 | size used to hold a redundant copy of the environment data, so |
3875 | that there is a valid backup copy in case there is a power failure | 3881 | that there is a valid backup copy in case there is a power failure |
3876 | during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be | 3882 | during a "saveenv" operation. CONFIG_ENV_OFFSET_RENDUND must be |
3877 | aligned to an erase block boundary. | 3883 | aligned to an erase block boundary. |
3878 | 3884 | ||
3879 | - CONFIG_ENV_RANGE (optional): | 3885 | - CONFIG_ENV_RANGE (optional): |
3880 | 3886 | ||
3881 | Specifies the length of the region in which the environment | 3887 | Specifies the length of the region in which the environment |
3882 | can be written. This should be a multiple of the NAND device's | 3888 | can be written. This should be a multiple of the NAND device's |
3883 | block size. Specifying a range with more erase blocks than | 3889 | block size. Specifying a range with more erase blocks than |
3884 | are needed to hold CONFIG_ENV_SIZE allows bad blocks within | 3890 | are needed to hold CONFIG_ENV_SIZE allows bad blocks within |
3885 | the range to be avoided. | 3891 | the range to be avoided. |
3886 | 3892 | ||
3887 | - CONFIG_ENV_OFFSET_OOB (optional): | 3893 | - CONFIG_ENV_OFFSET_OOB (optional): |
3888 | 3894 | ||
3889 | Enables support for dynamically retrieving the offset of the | 3895 | Enables support for dynamically retrieving the offset of the |
3890 | environment from block zero's out-of-band data. The | 3896 | environment from block zero's out-of-band data. The |
3891 | "nand env.oob" command can be used to record this offset. | 3897 | "nand env.oob" command can be used to record this offset. |
3892 | Currently, CONFIG_ENV_OFFSET_REDUND is not supported when | 3898 | Currently, CONFIG_ENV_OFFSET_REDUND is not supported when |
3893 | using CONFIG_ENV_OFFSET_OOB. | 3899 | using CONFIG_ENV_OFFSET_OOB. |
3894 | 3900 | ||
3895 | - CONFIG_NAND_ENV_DST | 3901 | - CONFIG_NAND_ENV_DST |
3896 | 3902 | ||
3897 | Defines address in RAM to which the nand_spl code should copy the | 3903 | Defines address in RAM to which the nand_spl code should copy the |
3898 | environment. If redundant environment is used, it will be copied to | 3904 | environment. If redundant environment is used, it will be copied to |
3899 | CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. | 3905 | CONFIG_NAND_ENV_DST + CONFIG_ENV_SIZE. |
3900 | 3906 | ||
3901 | - CONFIG_ENV_IS_IN_UBI: | 3907 | - CONFIG_ENV_IS_IN_UBI: |
3902 | 3908 | ||
3903 | Define this if you have an UBI volume that you want to use for the | 3909 | Define this if you have an UBI volume that you want to use for the |
3904 | environment. This has the benefit of wear-leveling the environment | 3910 | environment. This has the benefit of wear-leveling the environment |
3905 | accesses, which is important on NAND. | 3911 | accesses, which is important on NAND. |
3906 | 3912 | ||
3907 | - CONFIG_ENV_UBI_PART: | 3913 | - CONFIG_ENV_UBI_PART: |
3908 | 3914 | ||
3909 | Define this to a string that is the mtd partition containing the UBI. | 3915 | Define this to a string that is the mtd partition containing the UBI. |
3910 | 3916 | ||
3911 | - CONFIG_ENV_UBI_VOLUME: | 3917 | - CONFIG_ENV_UBI_VOLUME: |
3912 | 3918 | ||
3913 | Define this to the name of the volume that you want to store the | 3919 | Define this to the name of the volume that you want to store the |
3914 | environment in. | 3920 | environment in. |
3915 | 3921 | ||
3916 | - CONFIG_ENV_UBI_VOLUME_REDUND: | 3922 | - CONFIG_ENV_UBI_VOLUME_REDUND: |
3917 | 3923 | ||
3918 | Define this to the name of another volume to store a second copy of | 3924 | Define this to the name of another volume to store a second copy of |
3919 | the environment in. This will enable redundant environments in UBI. | 3925 | the environment in. This will enable redundant environments in UBI. |
3920 | It is assumed that both volumes are in the same MTD partition. | 3926 | It is assumed that both volumes are in the same MTD partition. |
3921 | 3927 | ||
3922 | - CONFIG_UBI_SILENCE_MSG | 3928 | - CONFIG_UBI_SILENCE_MSG |
3923 | - CONFIG_UBIFS_SILENCE_MSG | 3929 | - CONFIG_UBIFS_SILENCE_MSG |
3924 | 3930 | ||
3925 | You will probably want to define these to avoid a really noisy system | 3931 | You will probably want to define these to avoid a really noisy system |
3926 | when storing the env in UBI. | 3932 | when storing the env in UBI. |
3927 | 3933 | ||
3928 | - CONFIG_ENV_IS_IN_MMC: | 3934 | - CONFIG_ENV_IS_IN_MMC: |
3929 | 3935 | ||
3930 | Define this if you have an MMC device which you want to use for the | 3936 | Define this if you have an MMC device which you want to use for the |
3931 | environment. | 3937 | environment. |
3932 | 3938 | ||
3933 | - CONFIG_SYS_MMC_ENV_DEV: | 3939 | - CONFIG_SYS_MMC_ENV_DEV: |
3934 | 3940 | ||
3935 | Specifies which MMC device the environment is stored in. | 3941 | Specifies which MMC device the environment is stored in. |
3936 | 3942 | ||
3937 | - CONFIG_SYS_MMC_ENV_PART (optional): | 3943 | - CONFIG_SYS_MMC_ENV_PART (optional): |
3938 | 3944 | ||
3939 | Specifies which MMC partition the environment is stored in. If not | 3945 | Specifies which MMC partition the environment is stored in. If not |
3940 | set, defaults to partition 0, the user area. Common values might be | 3946 | set, defaults to partition 0, the user area. Common values might be |
3941 | 1 (first MMC boot partition), 2 (second MMC boot partition). | 3947 | 1 (first MMC boot partition), 2 (second MMC boot partition). |
3942 | 3948 | ||
3943 | - CONFIG_ENV_OFFSET: | 3949 | - CONFIG_ENV_OFFSET: |
3944 | - CONFIG_ENV_SIZE: | 3950 | - CONFIG_ENV_SIZE: |
3945 | 3951 | ||
3946 | These two #defines specify the offset and size of the environment | 3952 | These two #defines specify the offset and size of the environment |
3947 | area within the specified MMC device. | 3953 | area within the specified MMC device. |
3948 | 3954 | ||
3949 | If offset is positive (the usual case), it is treated as relative to | 3955 | If offset is positive (the usual case), it is treated as relative to |
3950 | the start of the MMC partition. If offset is negative, it is treated | 3956 | the start of the MMC partition. If offset is negative, it is treated |
3951 | as relative to the end of the MMC partition. This can be useful if | 3957 | as relative to the end of the MMC partition. This can be useful if |
3952 | your board may be fitted with different MMC devices, which have | 3958 | your board may be fitted with different MMC devices, which have |
3953 | different sizes for the MMC partitions, and you always want the | 3959 | different sizes for the MMC partitions, and you always want the |
3954 | environment placed at the very end of the partition, to leave the | 3960 | environment placed at the very end of the partition, to leave the |
3955 | maximum possible space before it, to store other data. | 3961 | maximum possible space before it, to store other data. |
3956 | 3962 | ||
3957 | These two values are in units of bytes, but must be aligned to an | 3963 | These two values are in units of bytes, but must be aligned to an |
3958 | MMC sector boundary. | 3964 | MMC sector boundary. |
3959 | 3965 | ||
3960 | - CONFIG_ENV_OFFSET_REDUND (optional): | 3966 | - CONFIG_ENV_OFFSET_REDUND (optional): |
3961 | 3967 | ||
3962 | Specifies a second storage area, of CONFIG_ENV_SIZE size, used to | 3968 | Specifies a second storage area, of CONFIG_ENV_SIZE size, used to |
3963 | hold a redundant copy of the environment data. This provides a | 3969 | hold a redundant copy of the environment data. This provides a |
3964 | valid backup copy in case the other copy is corrupted, e.g. due | 3970 | valid backup copy in case the other copy is corrupted, e.g. due |
3965 | to a power failure during a "saveenv" operation. | 3971 | to a power failure during a "saveenv" operation. |
3966 | 3972 | ||
3967 | This value may also be positive or negative; this is handled in the | 3973 | This value may also be positive or negative; this is handled in the |
3968 | same way as CONFIG_ENV_OFFSET. | 3974 | same way as CONFIG_ENV_OFFSET. |
3969 | 3975 | ||
3970 | This value is also in units of bytes, but must also be aligned to | 3976 | This value is also in units of bytes, but must also be aligned to |
3971 | an MMC sector boundary. | 3977 | an MMC sector boundary. |
3972 | 3978 | ||
3973 | - CONFIG_ENV_SIZE_REDUND (optional): | 3979 | - CONFIG_ENV_SIZE_REDUND (optional): |
3974 | 3980 | ||
3975 | This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is | 3981 | This value need not be set, even when CONFIG_ENV_OFFSET_REDUND is |
3976 | set. If this value is set, it must be set to the same value as | 3982 | set. If this value is set, it must be set to the same value as |
3977 | CONFIG_ENV_SIZE. | 3983 | CONFIG_ENV_SIZE. |
3978 | 3984 | ||
3979 | - CONFIG_SYS_SPI_INIT_OFFSET | 3985 | - CONFIG_SYS_SPI_INIT_OFFSET |
3980 | 3986 | ||
3981 | Defines offset to the initial SPI buffer area in DPRAM. The | 3987 | Defines offset to the initial SPI buffer area in DPRAM. The |
3982 | area is used at an early stage (ROM part) if the environment | 3988 | area is used at an early stage (ROM part) if the environment |
3983 | is configured to reside in the SPI EEPROM: We need a 520 byte | 3989 | is configured to reside in the SPI EEPROM: We need a 520 byte |
3984 | scratch DPRAM area. It is used between the two initialization | 3990 | scratch DPRAM area. It is used between the two initialization |
3985 | calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems | 3991 | calls (spi_init_f() and spi_init_r()). A value of 0xB00 seems |
3986 | to be a good choice since it makes it far enough from the | 3992 | to be a good choice since it makes it far enough from the |
3987 | start of the data area as well as from the stack pointer. | 3993 | start of the data area as well as from the stack pointer. |
3988 | 3994 | ||
3989 | Please note that the environment is read-only until the monitor | 3995 | Please note that the environment is read-only until the monitor |
3990 | has been relocated to RAM and a RAM copy of the environment has been | 3996 | has been relocated to RAM and a RAM copy of the environment has been |
3991 | created; also, when using EEPROM you will have to use getenv_f() | 3997 | created; also, when using EEPROM you will have to use getenv_f() |
3992 | until then to read environment variables. | 3998 | until then to read environment variables. |
3993 | 3999 | ||
3994 | The environment is protected by a CRC32 checksum. Before the monitor | 4000 | The environment is protected by a CRC32 checksum. Before the monitor |
3995 | is relocated into RAM, as a result of a bad CRC you will be working | 4001 | is relocated into RAM, as a result of a bad CRC you will be working |
3996 | with the compiled-in default environment - *silently*!!! [This is | 4002 | with the compiled-in default environment - *silently*!!! [This is |
3997 | necessary, because the first environment variable we need is the | 4003 | necessary, because the first environment variable we need is the |
3998 | "baudrate" setting for the console - if we have a bad CRC, we don't | 4004 | "baudrate" setting for the console - if we have a bad CRC, we don't |
3999 | have any device yet where we could complain.] | 4005 | have any device yet where we could complain.] |
4000 | 4006 | ||
4001 | Note: once the monitor has been relocated, then it will complain if | 4007 | Note: once the monitor has been relocated, then it will complain if |
4002 | the default environment is used; a new CRC is computed as soon as you | 4008 | the default environment is used; a new CRC is computed as soon as you |
4003 | use the "saveenv" command to store a valid environment. | 4009 | use the "saveenv" command to store a valid environment. |
4004 | 4010 | ||
4005 | - CONFIG_SYS_FAULT_ECHO_LINK_DOWN: | 4011 | - CONFIG_SYS_FAULT_ECHO_LINK_DOWN: |
4006 | Echo the inverted Ethernet link state to the fault LED. | 4012 | Echo the inverted Ethernet link state to the fault LED. |
4007 | 4013 | ||
4008 | Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR | 4014 | Note: If this option is active, then CONFIG_SYS_FAULT_MII_ADDR |
4009 | also needs to be defined. | 4015 | also needs to be defined. |
4010 | 4016 | ||
4011 | - CONFIG_SYS_FAULT_MII_ADDR: | 4017 | - CONFIG_SYS_FAULT_MII_ADDR: |
4012 | MII address of the PHY to check for the Ethernet link state. | 4018 | MII address of the PHY to check for the Ethernet link state. |
4013 | 4019 | ||
4014 | - CONFIG_NS16550_MIN_FUNCTIONS: | 4020 | - CONFIG_NS16550_MIN_FUNCTIONS: |
4015 | Define this if you desire to only have use of the NS16550_init | 4021 | Define this if you desire to only have use of the NS16550_init |
4016 | and NS16550_putc functions for the serial driver located at | 4022 | and NS16550_putc functions for the serial driver located at |
4017 | drivers/serial/ns16550.c. This option is useful for saving | 4023 | drivers/serial/ns16550.c. This option is useful for saving |
4018 | space for already greatly restricted images, including but not | 4024 | space for already greatly restricted images, including but not |
4019 | limited to NAND_SPL configurations. | 4025 | limited to NAND_SPL configurations. |
4020 | 4026 | ||
4021 | - CONFIG_DISPLAY_BOARDINFO | 4027 | - CONFIG_DISPLAY_BOARDINFO |
4022 | Display information about the board that U-Boot is running on | 4028 | Display information about the board that U-Boot is running on |
4023 | when U-Boot starts up. The board function checkboard() is called | 4029 | when U-Boot starts up. The board function checkboard() is called |
4024 | to do this. | 4030 | to do this. |
4025 | 4031 | ||
4026 | - CONFIG_DISPLAY_BOARDINFO_LATE | 4032 | - CONFIG_DISPLAY_BOARDINFO_LATE |
4027 | Similar to the previous option, but display this information | 4033 | Similar to the previous option, but display this information |
4028 | later, once stdio is running and output goes to the LCD, if | 4034 | later, once stdio is running and output goes to the LCD, if |
4029 | present. | 4035 | present. |
4030 | 4036 | ||
4031 | Low Level (hardware related) configuration options: | 4037 | Low Level (hardware related) configuration options: |
4032 | --------------------------------------------------- | 4038 | --------------------------------------------------- |
4033 | 4039 | ||
4034 | - CONFIG_SYS_CACHELINE_SIZE: | 4040 | - CONFIG_SYS_CACHELINE_SIZE: |
4035 | Cache Line Size of the CPU. | 4041 | Cache Line Size of the CPU. |
4036 | 4042 | ||
4037 | - CONFIG_SYS_DEFAULT_IMMR: | 4043 | - CONFIG_SYS_DEFAULT_IMMR: |
4038 | Default address of the IMMR after system reset. | 4044 | Default address of the IMMR after system reset. |
4039 | 4045 | ||
4040 | Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, | 4046 | Needed on some 8260 systems (MPC8260ADS, PQ2FADS-ZU, |
4041 | and RPXsuper) to be able to adjust the position of | 4047 | and RPXsuper) to be able to adjust the position of |
4042 | the IMMR register after a reset. | 4048 | the IMMR register after a reset. |
4043 | 4049 | ||
4044 | - CONFIG_SYS_CCSRBAR_DEFAULT: | 4050 | - CONFIG_SYS_CCSRBAR_DEFAULT: |
4045 | Default (power-on reset) physical address of CCSR on Freescale | 4051 | Default (power-on reset) physical address of CCSR on Freescale |
4046 | PowerPC SOCs. | 4052 | PowerPC SOCs. |
4047 | 4053 | ||
4048 | - CONFIG_SYS_CCSRBAR: | 4054 | - CONFIG_SYS_CCSRBAR: |
4049 | Virtual address of CCSR. On a 32-bit build, this is typically | 4055 | Virtual address of CCSR. On a 32-bit build, this is typically |
4050 | the same value as CONFIG_SYS_CCSRBAR_DEFAULT. | 4056 | the same value as CONFIG_SYS_CCSRBAR_DEFAULT. |
4051 | 4057 | ||
4052 | CONFIG_SYS_DEFAULT_IMMR must also be set to this value, | 4058 | CONFIG_SYS_DEFAULT_IMMR must also be set to this value, |
4053 | for cross-platform code that uses that macro instead. | 4059 | for cross-platform code that uses that macro instead. |
4054 | 4060 | ||
4055 | - CONFIG_SYS_CCSRBAR_PHYS: | 4061 | - CONFIG_SYS_CCSRBAR_PHYS: |
4056 | Physical address of CCSR. CCSR can be relocated to a new | 4062 | Physical address of CCSR. CCSR can be relocated to a new |
4057 | physical address, if desired. In this case, this macro should | 4063 | physical address, if desired. In this case, this macro should |
4058 | be set to that address. Otherwise, it should be set to the | 4064 | be set to that address. Otherwise, it should be set to the |
4059 | same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR | 4065 | same value as CONFIG_SYS_CCSRBAR_DEFAULT. For example, CCSR |
4060 | is typically relocated on 36-bit builds. It is recommended | 4066 | is typically relocated on 36-bit builds. It is recommended |
4061 | that this macro be defined via the _HIGH and _LOW macros: | 4067 | that this macro be defined via the _HIGH and _LOW macros: |
4062 | 4068 | ||
4063 | #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH | 4069 | #define CONFIG_SYS_CCSRBAR_PHYS ((CONFIG_SYS_CCSRBAR_PHYS_HIGH |
4064 | * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) | 4070 | * 1ull) << 32 | CONFIG_SYS_CCSRBAR_PHYS_LOW) |
4065 | 4071 | ||
4066 | - CONFIG_SYS_CCSRBAR_PHYS_HIGH: | 4072 | - CONFIG_SYS_CCSRBAR_PHYS_HIGH: |
4067 | Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically | 4073 | Bits 33-36 of CONFIG_SYS_CCSRBAR_PHYS. This value is typically |
4068 | either 0 (32-bit build) or 0xF (36-bit build). This macro is | 4074 | either 0 (32-bit build) or 0xF (36-bit build). This macro is |
4069 | used in assembly code, so it must not contain typecasts or | 4075 | used in assembly code, so it must not contain typecasts or |
4070 | integer size suffixes (e.g. "ULL"). | 4076 | integer size suffixes (e.g. "ULL"). |
4071 | 4077 | ||
4072 | - CONFIG_SYS_CCSRBAR_PHYS_LOW: | 4078 | - CONFIG_SYS_CCSRBAR_PHYS_LOW: |
4073 | Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is | 4079 | Lower 32-bits of CONFIG_SYS_CCSRBAR_PHYS. This macro is |
4074 | used in assembly code, so it must not contain typecasts or | 4080 | used in assembly code, so it must not contain typecasts or |
4075 | integer size suffixes (e.g. "ULL"). | 4081 | integer size suffixes (e.g. "ULL"). |
4076 | 4082 | ||
4077 | - CONFIG_SYS_CCSR_DO_NOT_RELOCATE: | 4083 | - CONFIG_SYS_CCSR_DO_NOT_RELOCATE: |
4078 | If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be | 4084 | If this macro is defined, then CONFIG_SYS_CCSRBAR_PHYS will be |
4079 | forced to a value that ensures that CCSR is not relocated. | 4085 | forced to a value that ensures that CCSR is not relocated. |
4080 | 4086 | ||
4081 | - Floppy Disk Support: | 4087 | - Floppy Disk Support: |
4082 | CONFIG_SYS_FDC_DRIVE_NUMBER | 4088 | CONFIG_SYS_FDC_DRIVE_NUMBER |
4083 | 4089 | ||
4084 | the default drive number (default value 0) | 4090 | the default drive number (default value 0) |
4085 | 4091 | ||
4086 | CONFIG_SYS_ISA_IO_STRIDE | 4092 | CONFIG_SYS_ISA_IO_STRIDE |
4087 | 4093 | ||
4088 | defines the spacing between FDC chipset registers | 4094 | defines the spacing between FDC chipset registers |
4089 | (default value 1) | 4095 | (default value 1) |
4090 | 4096 | ||
4091 | CONFIG_SYS_ISA_IO_OFFSET | 4097 | CONFIG_SYS_ISA_IO_OFFSET |
4092 | 4098 | ||
4093 | defines the offset of register from address. It | 4099 | defines the offset of register from address. It |
4094 | depends on which part of the data bus is connected to | 4100 | depends on which part of the data bus is connected to |
4095 | the FDC chipset. (default value 0) | 4101 | the FDC chipset. (default value 0) |
4096 | 4102 | ||
4097 | If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and | 4103 | If CONFIG_SYS_ISA_IO_STRIDE CONFIG_SYS_ISA_IO_OFFSET and |
4098 | CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their | 4104 | CONFIG_SYS_FDC_DRIVE_NUMBER are undefined, they take their |
4099 | default value. | 4105 | default value. |
4100 | 4106 | ||
4101 | if CONFIG_SYS_FDC_HW_INIT is defined, then the function | 4107 | if CONFIG_SYS_FDC_HW_INIT is defined, then the function |
4102 | fdc_hw_init() is called at the beginning of the FDC | 4108 | fdc_hw_init() is called at the beginning of the FDC |
4103 | setup. fdc_hw_init() must be provided by the board | 4109 | setup. fdc_hw_init() must be provided by the board |
4104 | source code. It is used to make hardware dependant | 4110 | source code. It is used to make hardware dependant |
4105 | initializations. | 4111 | initializations. |
4106 | 4112 | ||
4107 | - CONFIG_IDE_AHB: | 4113 | - CONFIG_IDE_AHB: |
4108 | Most IDE controllers were designed to be connected with PCI | 4114 | Most IDE controllers were designed to be connected with PCI |
4109 | interface. Only few of them were designed for AHB interface. | 4115 | interface. Only few of them were designed for AHB interface. |
4110 | When software is doing ATA command and data transfer to | 4116 | When software is doing ATA command and data transfer to |
4111 | IDE devices through IDE-AHB controller, some additional | 4117 | IDE devices through IDE-AHB controller, some additional |
4112 | registers accessing to these kind of IDE-AHB controller | 4118 | registers accessing to these kind of IDE-AHB controller |
4113 | is requierd. | 4119 | is requierd. |
4114 | 4120 | ||
4115 | - CONFIG_SYS_IMMR: Physical address of the Internal Memory. | 4121 | - CONFIG_SYS_IMMR: Physical address of the Internal Memory. |
4116 | DO NOT CHANGE unless you know exactly what you're | 4122 | DO NOT CHANGE unless you know exactly what you're |
4117 | doing! (11-4) [MPC8xx/82xx systems only] | 4123 | doing! (11-4) [MPC8xx/82xx systems only] |
4118 | 4124 | ||
4119 | - CONFIG_SYS_INIT_RAM_ADDR: | 4125 | - CONFIG_SYS_INIT_RAM_ADDR: |
4120 | 4126 | ||
4121 | Start address of memory area that can be used for | 4127 | Start address of memory area that can be used for |
4122 | initial data and stack; please note that this must be | 4128 | initial data and stack; please note that this must be |
4123 | writable memory that is working WITHOUT special | 4129 | writable memory that is working WITHOUT special |
4124 | initialization, i. e. you CANNOT use normal RAM which | 4130 | initialization, i. e. you CANNOT use normal RAM which |
4125 | will become available only after programming the | 4131 | will become available only after programming the |
4126 | memory controller and running certain initialization | 4132 | memory controller and running certain initialization |
4127 | sequences. | 4133 | sequences. |
4128 | 4134 | ||
4129 | U-Boot uses the following memory types: | 4135 | U-Boot uses the following memory types: |
4130 | - MPC8xx and MPC8260: IMMR (internal memory of the CPU) | 4136 | - MPC8xx and MPC8260: IMMR (internal memory of the CPU) |
4131 | - MPC824X: data cache | 4137 | - MPC824X: data cache |
4132 | - PPC4xx: data cache | 4138 | - PPC4xx: data cache |
4133 | 4139 | ||
4134 | - CONFIG_SYS_GBL_DATA_OFFSET: | 4140 | - CONFIG_SYS_GBL_DATA_OFFSET: |
4135 | 4141 | ||
4136 | Offset of the initial data structure in the memory | 4142 | Offset of the initial data structure in the memory |
4137 | area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually | 4143 | area defined by CONFIG_SYS_INIT_RAM_ADDR. Usually |
4138 | CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial | 4144 | CONFIG_SYS_GBL_DATA_OFFSET is chosen such that the initial |
4139 | data is located at the end of the available space | 4145 | data is located at the end of the available space |
4140 | (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - | 4146 | (sometimes written as (CONFIG_SYS_INIT_RAM_SIZE - |
4141 | CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just | 4147 | CONFIG_SYS_INIT_DATA_SIZE), and the initial stack is just |
4142 | below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + | 4148 | below that area (growing from (CONFIG_SYS_INIT_RAM_ADDR + |
4143 | CONFIG_SYS_GBL_DATA_OFFSET) downward. | 4149 | CONFIG_SYS_GBL_DATA_OFFSET) downward. |
4144 | 4150 | ||
4145 | Note: | 4151 | Note: |
4146 | On the MPC824X (or other systems that use the data | 4152 | On the MPC824X (or other systems that use the data |
4147 | cache for initial memory) the address chosen for | 4153 | cache for initial memory) the address chosen for |
4148 | CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must | 4154 | CONFIG_SYS_INIT_RAM_ADDR is basically arbitrary - it must |
4149 | point to an otherwise UNUSED address space between | 4155 | point to an otherwise UNUSED address space between |
4150 | the top of RAM and the start of the PCI space. | 4156 | the top of RAM and the start of the PCI space. |
4151 | 4157 | ||
4152 | - CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) | 4158 | - CONFIG_SYS_SIUMCR: SIU Module Configuration (11-6) |
4153 | 4159 | ||
4154 | - CONFIG_SYS_SYPCR: System Protection Control (11-9) | 4160 | - CONFIG_SYS_SYPCR: System Protection Control (11-9) |
4155 | 4161 | ||
4156 | - CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) | 4162 | - CONFIG_SYS_TBSCR: Time Base Status and Control (11-26) |
4157 | 4163 | ||
4158 | - CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) | 4164 | - CONFIG_SYS_PISCR: Periodic Interrupt Status and Control (11-31) |
4159 | 4165 | ||
4160 | - CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) | 4166 | - CONFIG_SYS_PLPRCR: PLL, Low-Power, and Reset Control Register (15-30) |
4161 | 4167 | ||
4162 | - CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) | 4168 | - CONFIG_SYS_SCCR: System Clock and reset Control Register (15-27) |
4163 | 4169 | ||
4164 | - CONFIG_SYS_OR_TIMING_SDRAM: | 4170 | - CONFIG_SYS_OR_TIMING_SDRAM: |
4165 | SDRAM timing | 4171 | SDRAM timing |
4166 | 4172 | ||
4167 | - CONFIG_SYS_MAMR_PTA: | 4173 | - CONFIG_SYS_MAMR_PTA: |
4168 | periodic timer for refresh | 4174 | periodic timer for refresh |
4169 | 4175 | ||
4170 | - CONFIG_SYS_DER: Debug Event Register (37-47) | 4176 | - CONFIG_SYS_DER: Debug Event Register (37-47) |
4171 | 4177 | ||
4172 | - FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, | 4178 | - FLASH_BASE0_PRELIM, FLASH_BASE1_PRELIM, CONFIG_SYS_REMAP_OR_AM, |
4173 | CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, | 4179 | CONFIG_SYS_PRELIM_OR_AM, CONFIG_SYS_OR_TIMING_FLASH, CONFIG_SYS_OR0_REMAP, |
4174 | CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, | 4180 | CONFIG_SYS_OR0_PRELIM, CONFIG_SYS_BR0_PRELIM, CONFIG_SYS_OR1_REMAP, CONFIG_SYS_OR1_PRELIM, |
4175 | CONFIG_SYS_BR1_PRELIM: | 4181 | CONFIG_SYS_BR1_PRELIM: |
4176 | Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) | 4182 | Memory Controller Definitions: BR0/1 and OR0/1 (FLASH) |
4177 | 4183 | ||
4178 | - SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, | 4184 | - SDRAM_BASE2_PRELIM, SDRAM_BASE3_PRELIM, SDRAM_MAX_SIZE, |
4179 | CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, | 4185 | CONFIG_SYS_OR_TIMING_SDRAM, CONFIG_SYS_OR2_PRELIM, CONFIG_SYS_BR2_PRELIM, |
4180 | CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: | 4186 | CONFIG_SYS_OR3_PRELIM, CONFIG_SYS_BR3_PRELIM: |
4181 | Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) | 4187 | Memory Controller Definitions: BR2/3 and OR2/3 (SDRAM) |
4182 | 4188 | ||
4183 | - CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, | 4189 | - CONFIG_SYS_MAMR_PTA, CONFIG_SYS_MPTPR_2BK_4K, CONFIG_SYS_MPTPR_1BK_4K, CONFIG_SYS_MPTPR_2BK_8K, |
4184 | CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: | 4190 | CONFIG_SYS_MPTPR_1BK_8K, CONFIG_SYS_MAMR_8COL, CONFIG_SYS_MAMR_9COL: |
4185 | Machine Mode Register and Memory Periodic Timer | 4191 | Machine Mode Register and Memory Periodic Timer |
4186 | Prescaler definitions (SDRAM timing) | 4192 | Prescaler definitions (SDRAM timing) |
4187 | 4193 | ||
4188 | - CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: | 4194 | - CONFIG_SYS_I2C_UCODE_PATCH, CONFIG_SYS_I2C_DPMEM_OFFSET [0x1FC0]: |
4189 | enable I2C microcode relocation patch (MPC8xx); | 4195 | enable I2C microcode relocation patch (MPC8xx); |
4190 | define relocation offset in DPRAM [DSP2] | 4196 | define relocation offset in DPRAM [DSP2] |
4191 | 4197 | ||
4192 | - CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: | 4198 | - CONFIG_SYS_SMC_UCODE_PATCH, CONFIG_SYS_SMC_DPMEM_OFFSET [0x1FC0]: |
4193 | enable SMC microcode relocation patch (MPC8xx); | 4199 | enable SMC microcode relocation patch (MPC8xx); |
4194 | define relocation offset in DPRAM [SMC1] | 4200 | define relocation offset in DPRAM [SMC1] |
4195 | 4201 | ||
4196 | - CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: | 4202 | - CONFIG_SYS_SPI_UCODE_PATCH, CONFIG_SYS_SPI_DPMEM_OFFSET [0x1FC0]: |
4197 | enable SPI microcode relocation patch (MPC8xx); | 4203 | enable SPI microcode relocation patch (MPC8xx); |
4198 | define relocation offset in DPRAM [SCC4] | 4204 | define relocation offset in DPRAM [SCC4] |
4199 | 4205 | ||
4200 | - CONFIG_SYS_USE_OSCCLK: | 4206 | - CONFIG_SYS_USE_OSCCLK: |
4201 | Use OSCM clock mode on MBX8xx board. Be careful, | 4207 | Use OSCM clock mode on MBX8xx board. Be careful, |
4202 | wrong setting might damage your board. Read | 4208 | wrong setting might damage your board. Read |
4203 | doc/README.MBX before setting this variable! | 4209 | doc/README.MBX before setting this variable! |
4204 | 4210 | ||
4205 | - CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) | 4211 | - CONFIG_SYS_CPM_POST_WORD_ADDR: (MPC8xx, MPC8260 only) |
4206 | Offset of the bootmode word in DPRAM used by post | 4212 | Offset of the bootmode word in DPRAM used by post |
4207 | (Power On Self Tests). This definition overrides | 4213 | (Power On Self Tests). This definition overrides |
4208 | #define'd default value in commproc.h resp. | 4214 | #define'd default value in commproc.h resp. |
4209 | cpm_8260.h. | 4215 | cpm_8260.h. |
4210 | 4216 | ||
4211 | - CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, | 4217 | - CONFIG_SYS_PCI_SLV_MEM_LOCAL, CONFIG_SYS_PCI_SLV_MEM_BUS, CONFIG_SYS_PICMR0_MASK_ATTRIB, |
4212 | CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, | 4218 | CONFIG_SYS_PCI_MSTR0_LOCAL, CONFIG_SYS_PCIMSK0_MASK, CONFIG_SYS_PCI_MSTR1_LOCAL, |
4213 | CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, | 4219 | CONFIG_SYS_PCIMSK1_MASK, CONFIG_SYS_PCI_MSTR_MEM_LOCAL, CONFIG_SYS_PCI_MSTR_MEM_BUS, |
4214 | CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, | 4220 | CONFIG_SYS_CPU_PCI_MEM_START, CONFIG_SYS_PCI_MSTR_MEM_SIZE, CONFIG_SYS_POCMR0_MASK_ATTRIB, |
4215 | CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, | 4221 | CONFIG_SYS_PCI_MSTR_MEMIO_LOCAL, CONFIG_SYS_PCI_MSTR_MEMIO_BUS, CPU_PCI_MEMIO_START, |
4216 | CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, | 4222 | CONFIG_SYS_PCI_MSTR_MEMIO_SIZE, CONFIG_SYS_POCMR1_MASK_ATTRIB, CONFIG_SYS_PCI_MSTR_IO_LOCAL, |
4217 | CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, | 4223 | CONFIG_SYS_PCI_MSTR_IO_BUS, CONFIG_SYS_CPU_PCI_IO_START, CONFIG_SYS_PCI_MSTR_IO_SIZE, |
4218 | CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) | 4224 | CONFIG_SYS_POCMR2_MASK_ATTRIB: (MPC826x only) |
4219 | Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. | 4225 | Overrides the default PCI memory map in arch/powerpc/cpu/mpc8260/pci.c if set. |
4220 | 4226 | ||
4221 | - CONFIG_PCI_DISABLE_PCIE: | 4227 | - CONFIG_PCI_DISABLE_PCIE: |
4222 | Disable PCI-Express on systems where it is supported but not | 4228 | Disable PCI-Express on systems where it is supported but not |
4223 | required. | 4229 | required. |
4224 | 4230 | ||
4225 | - CONFIG_PCI_ENUM_ONLY | 4231 | - CONFIG_PCI_ENUM_ONLY |
4226 | Only scan through and get the devices on the busses. | 4232 | Only scan through and get the devices on the busses. |
4227 | Don't do any setup work, presumably because someone or | 4233 | Don't do any setup work, presumably because someone or |
4228 | something has already done it, and we don't need to do it | 4234 | something has already done it, and we don't need to do it |
4229 | a second time. Useful for platforms that are pre-booted | 4235 | a second time. Useful for platforms that are pre-booted |
4230 | by coreboot or similar. | 4236 | by coreboot or similar. |
4231 | 4237 | ||
4232 | - CONFIG_PCI_INDIRECT_BRIDGE: | 4238 | - CONFIG_PCI_INDIRECT_BRIDGE: |
4233 | Enable support for indirect PCI bridges. | 4239 | Enable support for indirect PCI bridges. |
4234 | 4240 | ||
4235 | - CONFIG_SYS_SRIO: | 4241 | - CONFIG_SYS_SRIO: |
4236 | Chip has SRIO or not | 4242 | Chip has SRIO or not |
4237 | 4243 | ||
4238 | - CONFIG_SRIO1: | 4244 | - CONFIG_SRIO1: |
4239 | Board has SRIO 1 port available | 4245 | Board has SRIO 1 port available |
4240 | 4246 | ||
4241 | - CONFIG_SRIO2: | 4247 | - CONFIG_SRIO2: |
4242 | Board has SRIO 2 port available | 4248 | Board has SRIO 2 port available |
4243 | 4249 | ||
4244 | - CONFIG_SRIO_PCIE_BOOT_MASTER | 4250 | - CONFIG_SRIO_PCIE_BOOT_MASTER |
4245 | Board can support master function for Boot from SRIO and PCIE | 4251 | Board can support master function for Boot from SRIO and PCIE |
4246 | 4252 | ||
4247 | - CONFIG_SYS_SRIOn_MEM_VIRT: | 4253 | - CONFIG_SYS_SRIOn_MEM_VIRT: |
4248 | Virtual Address of SRIO port 'n' memory region | 4254 | Virtual Address of SRIO port 'n' memory region |
4249 | 4255 | ||
4250 | - CONFIG_SYS_SRIOn_MEM_PHYS: | 4256 | - CONFIG_SYS_SRIOn_MEM_PHYS: |
4251 | Physical Address of SRIO port 'n' memory region | 4257 | Physical Address of SRIO port 'n' memory region |
4252 | 4258 | ||
4253 | - CONFIG_SYS_SRIOn_MEM_SIZE: | 4259 | - CONFIG_SYS_SRIOn_MEM_SIZE: |
4254 | Size of SRIO port 'n' memory region | 4260 | Size of SRIO port 'n' memory region |
4255 | 4261 | ||
4256 | - CONFIG_SYS_NAND_BUSWIDTH_16BIT | 4262 | - CONFIG_SYS_NAND_BUSWIDTH_16BIT |
4257 | Defined to tell the NAND controller that the NAND chip is using | 4263 | Defined to tell the NAND controller that the NAND chip is using |
4258 | a 16 bit bus. | 4264 | a 16 bit bus. |
4259 | Not all NAND drivers use this symbol. | 4265 | Not all NAND drivers use this symbol. |
4260 | Example of drivers that use it: | 4266 | Example of drivers that use it: |
4261 | - drivers/mtd/nand/ndfc.c | 4267 | - drivers/mtd/nand/ndfc.c |
4262 | - drivers/mtd/nand/mxc_nand.c | 4268 | - drivers/mtd/nand/mxc_nand.c |
4263 | 4269 | ||
4264 | - CONFIG_SYS_NDFC_EBC0_CFG | 4270 | - CONFIG_SYS_NDFC_EBC0_CFG |
4265 | Sets the EBC0_CFG register for the NDFC. If not defined | 4271 | Sets the EBC0_CFG register for the NDFC. If not defined |
4266 | a default value will be used. | 4272 | a default value will be used. |
4267 | 4273 | ||
4268 | - CONFIG_SPD_EEPROM | 4274 | - CONFIG_SPD_EEPROM |
4269 | Get DDR timing information from an I2C EEPROM. Common | 4275 | Get DDR timing information from an I2C EEPROM. Common |
4270 | with pluggable memory modules such as SODIMMs | 4276 | with pluggable memory modules such as SODIMMs |
4271 | 4277 | ||
4272 | SPD_EEPROM_ADDRESS | 4278 | SPD_EEPROM_ADDRESS |
4273 | I2C address of the SPD EEPROM | 4279 | I2C address of the SPD EEPROM |
4274 | 4280 | ||
4275 | - CONFIG_SYS_SPD_BUS_NUM | 4281 | - CONFIG_SYS_SPD_BUS_NUM |
4276 | If SPD EEPROM is on an I2C bus other than the first | 4282 | If SPD EEPROM is on an I2C bus other than the first |
4277 | one, specify here. Note that the value must resolve | 4283 | one, specify here. Note that the value must resolve |
4278 | to something your driver can deal with. | 4284 | to something your driver can deal with. |
4279 | 4285 | ||
4280 | - CONFIG_SYS_DDR_RAW_TIMING | 4286 | - CONFIG_SYS_DDR_RAW_TIMING |
4281 | Get DDR timing information from other than SPD. Common with | 4287 | Get DDR timing information from other than SPD. Common with |
4282 | soldered DDR chips onboard without SPD. DDR raw timing | 4288 | soldered DDR chips onboard without SPD. DDR raw timing |
4283 | parameters are extracted from datasheet and hard-coded into | 4289 | parameters are extracted from datasheet and hard-coded into |
4284 | header files or board specific files. | 4290 | header files or board specific files. |
4285 | 4291 | ||
4286 | - CONFIG_FSL_DDR_INTERACTIVE | 4292 | - CONFIG_FSL_DDR_INTERACTIVE |
4287 | Enable interactive DDR debugging. See doc/README.fsl-ddr. | 4293 | Enable interactive DDR debugging. See doc/README.fsl-ddr. |
4288 | 4294 | ||
4289 | - CONFIG_SYS_83XX_DDR_USES_CS0 | 4295 | - CONFIG_SYS_83XX_DDR_USES_CS0 |
4290 | Only for 83xx systems. If specified, then DDR should | 4296 | Only for 83xx systems. If specified, then DDR should |
4291 | be configured using CS0 and CS1 instead of CS2 and CS3. | 4297 | be configured using CS0 and CS1 instead of CS2 and CS3. |
4292 | 4298 | ||
4293 | - CONFIG_ETHER_ON_FEC[12] | 4299 | - CONFIG_ETHER_ON_FEC[12] |
4294 | Define to enable FEC[12] on a 8xx series processor. | 4300 | Define to enable FEC[12] on a 8xx series processor. |
4295 | 4301 | ||
4296 | - CONFIG_FEC[12]_PHY | 4302 | - CONFIG_FEC[12]_PHY |
4297 | Define to the hardcoded PHY address which corresponds | 4303 | Define to the hardcoded PHY address which corresponds |
4298 | to the given FEC; i. e. | 4304 | to the given FEC; i. e. |
4299 | #define CONFIG_FEC1_PHY 4 | 4305 | #define CONFIG_FEC1_PHY 4 |
4300 | means that the PHY with address 4 is connected to FEC1 | 4306 | means that the PHY with address 4 is connected to FEC1 |
4301 | 4307 | ||
4302 | When set to -1, means to probe for first available. | 4308 | When set to -1, means to probe for first available. |
4303 | 4309 | ||
4304 | - CONFIG_FEC[12]_PHY_NORXERR | 4310 | - CONFIG_FEC[12]_PHY_NORXERR |
4305 | The PHY does not have a RXERR line (RMII only). | 4311 | The PHY does not have a RXERR line (RMII only). |
4306 | (so program the FEC to ignore it). | 4312 | (so program the FEC to ignore it). |
4307 | 4313 | ||
4308 | - CONFIG_RMII | 4314 | - CONFIG_RMII |
4309 | Enable RMII mode for all FECs. | 4315 | Enable RMII mode for all FECs. |
4310 | Note that this is a global option, we can't | 4316 | Note that this is a global option, we can't |
4311 | have one FEC in standard MII mode and another in RMII mode. | 4317 | have one FEC in standard MII mode and another in RMII mode. |
4312 | 4318 | ||
4313 | - CONFIG_CRC32_VERIFY | 4319 | - CONFIG_CRC32_VERIFY |
4314 | Add a verify option to the crc32 command. | 4320 | Add a verify option to the crc32 command. |
4315 | The syntax is: | 4321 | The syntax is: |
4316 | 4322 | ||
4317 | => crc32 -v <address> <count> <crc32> | 4323 | => crc32 -v <address> <count> <crc32> |
4318 | 4324 | ||
4319 | Where address/count indicate a memory area | 4325 | Where address/count indicate a memory area |
4320 | and crc32 is the correct crc32 which the | 4326 | and crc32 is the correct crc32 which the |
4321 | area should have. | 4327 | area should have. |
4322 | 4328 | ||
4323 | - CONFIG_LOOPW | 4329 | - CONFIG_LOOPW |
4324 | Add the "loopw" memory command. This only takes effect if | 4330 | Add the "loopw" memory command. This only takes effect if |
4325 | the memory commands are activated globally (CONFIG_CMD_MEM). | 4331 | the memory commands are activated globally (CONFIG_CMD_MEM). |
4326 | 4332 | ||
4327 | - CONFIG_MX_CYCLIC | 4333 | - CONFIG_MX_CYCLIC |
4328 | Add the "mdc" and "mwc" memory commands. These are cyclic | 4334 | Add the "mdc" and "mwc" memory commands. These are cyclic |
4329 | "md/mw" commands. | 4335 | "md/mw" commands. |
4330 | Examples: | 4336 | Examples: |
4331 | 4337 | ||
4332 | => mdc.b 10 4 500 | 4338 | => mdc.b 10 4 500 |
4333 | This command will print 4 bytes (10,11,12,13) each 500 ms. | 4339 | This command will print 4 bytes (10,11,12,13) each 500 ms. |
4334 | 4340 | ||
4335 | => mwc.l 100 12345678 10 | 4341 | => mwc.l 100 12345678 10 |
4336 | This command will write 12345678 to address 100 all 10 ms. | 4342 | This command will write 12345678 to address 100 all 10 ms. |
4337 | 4343 | ||
4338 | This only takes effect if the memory commands are activated | 4344 | This only takes effect if the memory commands are activated |
4339 | globally (CONFIG_CMD_MEM). | 4345 | globally (CONFIG_CMD_MEM). |
4340 | 4346 | ||
4341 | - CONFIG_SKIP_LOWLEVEL_INIT | 4347 | - CONFIG_SKIP_LOWLEVEL_INIT |
4342 | [ARM, NDS32, MIPS only] If this variable is defined, then certain | 4348 | [ARM, NDS32, MIPS only] If this variable is defined, then certain |
4343 | low level initializations (like setting up the memory | 4349 | low level initializations (like setting up the memory |
4344 | controller) are omitted and/or U-Boot does not | 4350 | controller) are omitted and/or U-Boot does not |
4345 | relocate itself into RAM. | 4351 | relocate itself into RAM. |
4346 | 4352 | ||
4347 | Normally this variable MUST NOT be defined. The only | 4353 | Normally this variable MUST NOT be defined. The only |
4348 | exception is when U-Boot is loaded (to RAM) by some | 4354 | exception is when U-Boot is loaded (to RAM) by some |
4349 | other boot loader or by a debugger which performs | 4355 | other boot loader or by a debugger which performs |
4350 | these initializations itself. | 4356 | these initializations itself. |
4351 | 4357 | ||
4352 | - CONFIG_SPL_BUILD | 4358 | - CONFIG_SPL_BUILD |
4353 | Modifies the behaviour of start.S when compiling a loader | 4359 | Modifies the behaviour of start.S when compiling a loader |
4354 | that is executed before the actual U-Boot. E.g. when | 4360 | that is executed before the actual U-Boot. E.g. when |
4355 | compiling a NAND SPL. | 4361 | compiling a NAND SPL. |
4356 | 4362 | ||
4357 | - CONFIG_TPL_BUILD | 4363 | - CONFIG_TPL_BUILD |
4358 | Modifies the behaviour of start.S when compiling a loader | 4364 | Modifies the behaviour of start.S when compiling a loader |
4359 | that is executed after the SPL and before the actual U-Boot. | 4365 | that is executed after the SPL and before the actual U-Boot. |
4360 | It is loaded by the SPL. | 4366 | It is loaded by the SPL. |
4361 | 4367 | ||
4362 | - CONFIG_SYS_MPC85XX_NO_RESETVEC | 4368 | - CONFIG_SYS_MPC85XX_NO_RESETVEC |
4363 | Only for 85xx systems. If this variable is specified, the section | 4369 | Only for 85xx systems. If this variable is specified, the section |
4364 | .resetvec is not kept and the section .bootpg is placed in the | 4370 | .resetvec is not kept and the section .bootpg is placed in the |
4365 | previous 4k of the .text section. | 4371 | previous 4k of the .text section. |
4366 | 4372 | ||
4367 | - CONFIG_ARCH_MAP_SYSMEM | 4373 | - CONFIG_ARCH_MAP_SYSMEM |
4368 | Generally U-Boot (and in particular the md command) uses | 4374 | Generally U-Boot (and in particular the md command) uses |
4369 | effective address. It is therefore not necessary to regard | 4375 | effective address. It is therefore not necessary to regard |
4370 | U-Boot address as virtual addresses that need to be translated | 4376 | U-Boot address as virtual addresses that need to be translated |
4371 | to physical addresses. However, sandbox requires this, since | 4377 | to physical addresses. However, sandbox requires this, since |
4372 | it maintains its own little RAM buffer which contains all | 4378 | it maintains its own little RAM buffer which contains all |
4373 | addressable memory. This option causes some memory accesses | 4379 | addressable memory. This option causes some memory accesses |
4374 | to be mapped through map_sysmem() / unmap_sysmem(). | 4380 | to be mapped through map_sysmem() / unmap_sysmem(). |
4375 | 4381 | ||
4376 | - CONFIG_USE_ARCH_MEMCPY | 4382 | - CONFIG_USE_ARCH_MEMCPY |
4377 | CONFIG_USE_ARCH_MEMSET | 4383 | CONFIG_USE_ARCH_MEMSET |
4378 | If these options are used a optimized version of memcpy/memset will | 4384 | If these options are used a optimized version of memcpy/memset will |
4379 | be used if available. These functions may be faster under some | 4385 | be used if available. These functions may be faster under some |
4380 | conditions but may increase the binary size. | 4386 | conditions but may increase the binary size. |
4381 | 4387 | ||
4382 | - CONFIG_X86_RESET_VECTOR | 4388 | - CONFIG_X86_RESET_VECTOR |
4383 | If defined, the x86 reset vector code is included. This is not | 4389 | If defined, the x86 reset vector code is included. This is not |
4384 | needed when U-Boot is running from Coreboot. | 4390 | needed when U-Boot is running from Coreboot. |
4385 | 4391 | ||
4386 | - CONFIG_SYS_MPUCLK | 4392 | - CONFIG_SYS_MPUCLK |
4387 | Defines the MPU clock speed (in MHz). | 4393 | Defines the MPU clock speed (in MHz). |
4388 | 4394 | ||
4389 | NOTE : currently only supported on AM335x platforms. | 4395 | NOTE : currently only supported on AM335x platforms. |
4390 | 4396 | ||
4391 | Freescale QE/FMAN Firmware Support: | 4397 | Freescale QE/FMAN Firmware Support: |
4392 | ----------------------------------- | 4398 | ----------------------------------- |
4393 | 4399 | ||
4394 | The Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the | 4400 | The Freescale QUICCEngine (QE) and Frame Manager (FMAN) both support the |
4395 | loading of "firmware", which is encoded in the QE firmware binary format. | 4401 | loading of "firmware", which is encoded in the QE firmware binary format. |
4396 | This firmware often needs to be loaded during U-Boot booting, so macros | 4402 | This firmware often needs to be loaded during U-Boot booting, so macros |
4397 | are used to identify the storage device (NOR flash, SPI, etc) and the address | 4403 | are used to identify the storage device (NOR flash, SPI, etc) and the address |
4398 | within that device. | 4404 | within that device. |
4399 | 4405 | ||
4400 | - CONFIG_SYS_QE_FMAN_FW_ADDR | 4406 | - CONFIG_SYS_QE_FMAN_FW_ADDR |
4401 | The address in the storage device where the firmware is located. The | 4407 | The address in the storage device where the firmware is located. The |
4402 | meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro | 4408 | meaning of this address depends on which CONFIG_SYS_QE_FW_IN_xxx macro |
4403 | is also specified. | 4409 | is also specified. |
4404 | 4410 | ||
4405 | - CONFIG_SYS_QE_FMAN_FW_LENGTH | 4411 | - CONFIG_SYS_QE_FMAN_FW_LENGTH |
4406 | The maximum possible size of the firmware. The firmware binary format | 4412 | The maximum possible size of the firmware. The firmware binary format |
4407 | has a field that specifies the actual size of the firmware, but it | 4413 | has a field that specifies the actual size of the firmware, but it |
4408 | might not be possible to read any part of the firmware unless some | 4414 | might not be possible to read any part of the firmware unless some |
4409 | local storage is allocated to hold the entire firmware first. | 4415 | local storage is allocated to hold the entire firmware first. |
4410 | 4416 | ||
4411 | - CONFIG_SYS_QE_FMAN_FW_IN_NOR | 4417 | - CONFIG_SYS_QE_FMAN_FW_IN_NOR |
4412 | Specifies that QE/FMAN firmware is located in NOR flash, mapped as | 4418 | Specifies that QE/FMAN firmware is located in NOR flash, mapped as |
4413 | normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the | 4419 | normal addressable memory via the LBC. CONFIG_SYS_FMAN_FW_ADDR is the |
4414 | virtual address in NOR flash. | 4420 | virtual address in NOR flash. |
4415 | 4421 | ||
4416 | - CONFIG_SYS_QE_FMAN_FW_IN_NAND | 4422 | - CONFIG_SYS_QE_FMAN_FW_IN_NAND |
4417 | Specifies that QE/FMAN firmware is located in NAND flash. | 4423 | Specifies that QE/FMAN firmware is located in NAND flash. |
4418 | CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. | 4424 | CONFIG_SYS_FMAN_FW_ADDR is the offset within NAND flash. |
4419 | 4425 | ||
4420 | - CONFIG_SYS_QE_FMAN_FW_IN_MMC | 4426 | - CONFIG_SYS_QE_FMAN_FW_IN_MMC |
4421 | Specifies that QE/FMAN firmware is located on the primary SD/MMC | 4427 | Specifies that QE/FMAN firmware is located on the primary SD/MMC |
4422 | device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. | 4428 | device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. |
4423 | 4429 | ||
4424 | - CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH | 4430 | - CONFIG_SYS_QE_FMAN_FW_IN_SPIFLASH |
4425 | Specifies that QE/FMAN firmware is located on the primary SPI | 4431 | Specifies that QE/FMAN firmware is located on the primary SPI |
4426 | device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. | 4432 | device. CONFIG_SYS_FMAN_FW_ADDR is the byte offset on that device. |
4427 | 4433 | ||
4428 | - CONFIG_SYS_QE_FMAN_FW_IN_REMOTE | 4434 | - CONFIG_SYS_QE_FMAN_FW_IN_REMOTE |
4429 | Specifies that QE/FMAN firmware is located in the remote (master) | 4435 | Specifies that QE/FMAN firmware is located in the remote (master) |
4430 | memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which | 4436 | memory space. CONFIG_SYS_FMAN_FW_ADDR is a virtual address which |
4431 | can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound | 4437 | can be mapped from slave TLB->slave LAW->slave SRIO or PCIE outbound |
4432 | window->master inbound window->master LAW->the ucode address in | 4438 | window->master inbound window->master LAW->the ucode address in |
4433 | master's memory space. | 4439 | master's memory space. |
4434 | 4440 | ||
4435 | Building the Software: | 4441 | Building the Software: |
4436 | ====================== | 4442 | ====================== |
4437 | 4443 | ||
4438 | Building U-Boot has been tested in several native build environments | 4444 | Building U-Boot has been tested in several native build environments |
4439 | and in many different cross environments. Of course we cannot support | 4445 | and in many different cross environments. Of course we cannot support |
4440 | all possibly existing versions of cross development tools in all | 4446 | all possibly existing versions of cross development tools in all |
4441 | (potentially obsolete) versions. In case of tool chain problems we | 4447 | (potentially obsolete) versions. In case of tool chain problems we |
4442 | recommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) | 4448 | recommend to use the ELDK (see http://www.denx.de/wiki/DULG/ELDK) |
4443 | which is extensively used to build and test U-Boot. | 4449 | which is extensively used to build and test U-Boot. |
4444 | 4450 | ||
4445 | If you are not using a native environment, it is assumed that you | 4451 | If you are not using a native environment, it is assumed that you |
4446 | have GNU cross compiling tools available in your path. In this case, | 4452 | have GNU cross compiling tools available in your path. In this case, |
4447 | you must set the environment variable CROSS_COMPILE in your shell. | 4453 | you must set the environment variable CROSS_COMPILE in your shell. |
4448 | Note that no changes to the Makefile or any other source files are | 4454 | Note that no changes to the Makefile or any other source files are |
4449 | necessary. For example using the ELDK on a 4xx CPU, please enter: | 4455 | necessary. For example using the ELDK on a 4xx CPU, please enter: |
4450 | 4456 | ||
4451 | $ CROSS_COMPILE=ppc_4xx- | 4457 | $ CROSS_COMPILE=ppc_4xx- |
4452 | $ export CROSS_COMPILE | 4458 | $ export CROSS_COMPILE |
4453 | 4459 | ||
4454 | Note: If you wish to generate Windows versions of the utilities in | 4460 | Note: If you wish to generate Windows versions of the utilities in |
4455 | the tools directory you can use the MinGW toolchain | 4461 | the tools directory you can use the MinGW toolchain |
4456 | (http://www.mingw.org). Set your HOST tools to the MinGW | 4462 | (http://www.mingw.org). Set your HOST tools to the MinGW |
4457 | toolchain and execute 'make tools'. For example: | 4463 | toolchain and execute 'make tools'. For example: |
4458 | 4464 | ||
4459 | $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools | 4465 | $ make HOSTCC=i586-mingw32msvc-gcc HOSTSTRIP=i586-mingw32msvc-strip tools |
4460 | 4466 | ||
4461 | Binaries such as tools/mkimage.exe will be created which can | 4467 | Binaries such as tools/mkimage.exe will be created which can |
4462 | be executed on computers running Windows. | 4468 | be executed on computers running Windows. |
4463 | 4469 | ||
4464 | U-Boot is intended to be simple to build. After installing the | 4470 | U-Boot is intended to be simple to build. After installing the |
4465 | sources you must configure U-Boot for one specific board type. This | 4471 | sources you must configure U-Boot for one specific board type. This |
4466 | is done by typing: | 4472 | is done by typing: |
4467 | 4473 | ||
4468 | make NAME_config | 4474 | make NAME_config |
4469 | 4475 | ||
4470 | where "NAME_config" is the name of one of the existing configu- | 4476 | where "NAME_config" is the name of one of the existing configu- |
4471 | rations; see boards.cfg for supported names. | 4477 | rations; see boards.cfg for supported names. |
4472 | 4478 | ||
4473 | Note: for some board special configuration names may exist; check if | 4479 | Note: for some board special configuration names may exist; check if |
4474 | additional information is available from the board vendor; for | 4480 | additional information is available from the board vendor; for |
4475 | instance, the TQM823L systems are available without (standard) | 4481 | instance, the TQM823L systems are available without (standard) |
4476 | or with LCD support. You can select such additional "features" | 4482 | or with LCD support. You can select such additional "features" |
4477 | when choosing the configuration, i. e. | 4483 | when choosing the configuration, i. e. |
4478 | 4484 | ||
4479 | make TQM823L_config | 4485 | make TQM823L_config |
4480 | - will configure for a plain TQM823L, i. e. no LCD support | 4486 | - will configure for a plain TQM823L, i. e. no LCD support |
4481 | 4487 | ||
4482 | make TQM823L_LCD_config | 4488 | make TQM823L_LCD_config |
4483 | - will configure for a TQM823L with U-Boot console on LCD | 4489 | - will configure for a TQM823L with U-Boot console on LCD |
4484 | 4490 | ||
4485 | etc. | 4491 | etc. |
4486 | 4492 | ||
4487 | 4493 | ||
4488 | Finally, type "make all", and you should get some working U-Boot | 4494 | Finally, type "make all", and you should get some working U-Boot |
4489 | images ready for download to / installation on your system: | 4495 | images ready for download to / installation on your system: |
4490 | 4496 | ||
4491 | - "u-boot.bin" is a raw binary image | 4497 | - "u-boot.bin" is a raw binary image |
4492 | - "u-boot" is an image in ELF binary format | 4498 | - "u-boot" is an image in ELF binary format |
4493 | - "u-boot.srec" is in Motorola S-Record format | 4499 | - "u-boot.srec" is in Motorola S-Record format |
4494 | 4500 | ||
4495 | By default the build is performed locally and the objects are saved | 4501 | By default the build is performed locally and the objects are saved |
4496 | in the source directory. One of the two methods can be used to change | 4502 | in the source directory. One of the two methods can be used to change |
4497 | this behavior and build U-Boot to some external directory: | 4503 | this behavior and build U-Boot to some external directory: |
4498 | 4504 | ||
4499 | 1. Add O= to the make command line invocations: | 4505 | 1. Add O= to the make command line invocations: |
4500 | 4506 | ||
4501 | make O=/tmp/build distclean | 4507 | make O=/tmp/build distclean |
4502 | make O=/tmp/build NAME_config | 4508 | make O=/tmp/build NAME_config |
4503 | make O=/tmp/build all | 4509 | make O=/tmp/build all |
4504 | 4510 | ||
4505 | 2. Set environment variable BUILD_DIR to point to the desired location: | 4511 | 2. Set environment variable BUILD_DIR to point to the desired location: |
4506 | 4512 | ||
4507 | export BUILD_DIR=/tmp/build | 4513 | export BUILD_DIR=/tmp/build |
4508 | make distclean | 4514 | make distclean |
4509 | make NAME_config | 4515 | make NAME_config |
4510 | make all | 4516 | make all |
4511 | 4517 | ||
4512 | Note that the command line "O=" setting overrides the BUILD_DIR environment | 4518 | Note that the command line "O=" setting overrides the BUILD_DIR environment |
4513 | variable. | 4519 | variable. |
4514 | 4520 | ||
4515 | 4521 | ||
4516 | Please be aware that the Makefiles assume you are using GNU make, so | 4522 | Please be aware that the Makefiles assume you are using GNU make, so |
4517 | for instance on NetBSD you might need to use "gmake" instead of | 4523 | for instance on NetBSD you might need to use "gmake" instead of |
4518 | native "make". | 4524 | native "make". |
4519 | 4525 | ||
4520 | 4526 | ||
4521 | If the system board that you have is not listed, then you will need | 4527 | If the system board that you have is not listed, then you will need |
4522 | to port U-Boot to your hardware platform. To do this, follow these | 4528 | to port U-Boot to your hardware platform. To do this, follow these |
4523 | steps: | 4529 | steps: |
4524 | 4530 | ||
4525 | 1. Add a new configuration option for your board to the toplevel | 4531 | 1. Add a new configuration option for your board to the toplevel |
4526 | "boards.cfg" file, using the existing entries as examples. | 4532 | "boards.cfg" file, using the existing entries as examples. |
4527 | Follow the instructions there to keep the boards in order. | 4533 | Follow the instructions there to keep the boards in order. |
4528 | 2. Create a new directory to hold your board specific code. Add any | 4534 | 2. Create a new directory to hold your board specific code. Add any |
4529 | files you need. In your board directory, you will need at least | 4535 | files you need. In your board directory, you will need at least |
4530 | the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". | 4536 | the "Makefile", a "<board>.c", "flash.c" and "u-boot.lds". |
4531 | 3. Create a new configuration file "include/configs/<board>.h" for | 4537 | 3. Create a new configuration file "include/configs/<board>.h" for |
4532 | your board | 4538 | your board |
4533 | 3. If you're porting U-Boot to a new CPU, then also create a new | 4539 | 3. If you're porting U-Boot to a new CPU, then also create a new |
4534 | directory to hold your CPU specific code. Add any files you need. | 4540 | directory to hold your CPU specific code. Add any files you need. |
4535 | 4. Run "make <board>_config" with your new name. | 4541 | 4. Run "make <board>_config" with your new name. |
4536 | 5. Type "make", and you should get a working "u-boot.srec" file | 4542 | 5. Type "make", and you should get a working "u-boot.srec" file |
4537 | to be installed on your target system. | 4543 | to be installed on your target system. |
4538 | 6. Debug and solve any problems that might arise. | 4544 | 6. Debug and solve any problems that might arise. |
4539 | [Of course, this last step is much harder than it sounds.] | 4545 | [Of course, this last step is much harder than it sounds.] |
4540 | 4546 | ||
4541 | 4547 | ||
4542 | Testing of U-Boot Modifications, Ports to New Hardware, etc.: | 4548 | Testing of U-Boot Modifications, Ports to New Hardware, etc.: |
4543 | ============================================================== | 4549 | ============================================================== |
4544 | 4550 | ||
4545 | If you have modified U-Boot sources (for instance added a new board | 4551 | If you have modified U-Boot sources (for instance added a new board |
4546 | or support for new devices, a new CPU, etc.) you are expected to | 4552 | or support for new devices, a new CPU, etc.) you are expected to |
4547 | provide feedback to the other developers. The feedback normally takes | 4553 | provide feedback to the other developers. The feedback normally takes |
4548 | the form of a "patch", i. e. a context diff against a certain (latest | 4554 | the form of a "patch", i. e. a context diff against a certain (latest |
4549 | official or latest in the git repository) version of U-Boot sources. | 4555 | official or latest in the git repository) version of U-Boot sources. |
4550 | 4556 | ||
4551 | But before you submit such a patch, please verify that your modifi- | 4557 | But before you submit such a patch, please verify that your modifi- |
4552 | cation did not break existing code. At least make sure that *ALL* of | 4558 | cation did not break existing code. At least make sure that *ALL* of |
4553 | the supported boards compile WITHOUT ANY compiler warnings. To do so, | 4559 | the supported boards compile WITHOUT ANY compiler warnings. To do so, |
4554 | just run the "MAKEALL" script, which will configure and build U-Boot | 4560 | just run the "MAKEALL" script, which will configure and build U-Boot |
4555 | for ALL supported system. Be warned, this will take a while. You can | 4561 | for ALL supported system. Be warned, this will take a while. You can |
4556 | select which (cross) compiler to use by passing a `CROSS_COMPILE' | 4562 | select which (cross) compiler to use by passing a `CROSS_COMPILE' |
4557 | environment variable to the script, i. e. to use the ELDK cross tools | 4563 | environment variable to the script, i. e. to use the ELDK cross tools |
4558 | you can type | 4564 | you can type |
4559 | 4565 | ||
4560 | CROSS_COMPILE=ppc_8xx- MAKEALL | 4566 | CROSS_COMPILE=ppc_8xx- MAKEALL |
4561 | 4567 | ||
4562 | or to build on a native PowerPC system you can type | 4568 | or to build on a native PowerPC system you can type |
4563 | 4569 | ||
4564 | CROSS_COMPILE=' ' MAKEALL | 4570 | CROSS_COMPILE=' ' MAKEALL |
4565 | 4571 | ||
4566 | When using the MAKEALL script, the default behaviour is to build | 4572 | When using the MAKEALL script, the default behaviour is to build |
4567 | U-Boot in the source directory. This location can be changed by | 4573 | U-Boot in the source directory. This location can be changed by |
4568 | setting the BUILD_DIR environment variable. Also, for each target | 4574 | setting the BUILD_DIR environment variable. Also, for each target |
4569 | built, the MAKEALL script saves two log files (<target>.ERR and | 4575 | built, the MAKEALL script saves two log files (<target>.ERR and |
4570 | <target>.MAKEALL) in the <source dir>/LOG directory. This default | 4576 | <target>.MAKEALL) in the <source dir>/LOG directory. This default |
4571 | location can be changed by setting the MAKEALL_LOGDIR environment | 4577 | location can be changed by setting the MAKEALL_LOGDIR environment |
4572 | variable. For example: | 4578 | variable. For example: |
4573 | 4579 | ||
4574 | export BUILD_DIR=/tmp/build | 4580 | export BUILD_DIR=/tmp/build |
4575 | export MAKEALL_LOGDIR=/tmp/log | 4581 | export MAKEALL_LOGDIR=/tmp/log |
4576 | CROSS_COMPILE=ppc_8xx- MAKEALL | 4582 | CROSS_COMPILE=ppc_8xx- MAKEALL |
4577 | 4583 | ||
4578 | With the above settings build objects are saved in the /tmp/build, | 4584 | With the above settings build objects are saved in the /tmp/build, |
4579 | log files are saved in the /tmp/log and the source tree remains clean | 4585 | log files are saved in the /tmp/log and the source tree remains clean |
4580 | during the whole build process. | 4586 | during the whole build process. |
4581 | 4587 | ||
4582 | 4588 | ||
4583 | See also "U-Boot Porting Guide" below. | 4589 | See also "U-Boot Porting Guide" below. |
4584 | 4590 | ||
4585 | 4591 | ||
4586 | Monitor Commands - Overview: | 4592 | Monitor Commands - Overview: |
4587 | ============================ | 4593 | ============================ |
4588 | 4594 | ||
4589 | go - start application at address 'addr' | 4595 | go - start application at address 'addr' |
4590 | run - run commands in an environment variable | 4596 | run - run commands in an environment variable |
4591 | bootm - boot application image from memory | 4597 | bootm - boot application image from memory |
4592 | bootp - boot image via network using BootP/TFTP protocol | 4598 | bootp - boot image via network using BootP/TFTP protocol |
4593 | bootz - boot zImage from memory | 4599 | bootz - boot zImage from memory |
4594 | tftpboot- boot image via network using TFTP protocol | 4600 | tftpboot- boot image via network using TFTP protocol |
4595 | and env variables "ipaddr" and "serverip" | 4601 | and env variables "ipaddr" and "serverip" |
4596 | (and eventually "gatewayip") | 4602 | (and eventually "gatewayip") |
4597 | tftpput - upload a file via network using TFTP protocol | 4603 | tftpput - upload a file via network using TFTP protocol |
4598 | rarpboot- boot image via network using RARP/TFTP protocol | 4604 | rarpboot- boot image via network using RARP/TFTP protocol |
4599 | diskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' | 4605 | diskboot- boot from IDE devicebootd - boot default, i.e., run 'bootcmd' |
4600 | loads - load S-Record file over serial line | 4606 | loads - load S-Record file over serial line |
4601 | loadb - load binary file over serial line (kermit mode) | 4607 | loadb - load binary file over serial line (kermit mode) |
4602 | md - memory display | 4608 | md - memory display |
4603 | mm - memory modify (auto-incrementing) | 4609 | mm - memory modify (auto-incrementing) |
4604 | nm - memory modify (constant address) | 4610 | nm - memory modify (constant address) |
4605 | mw - memory write (fill) | 4611 | mw - memory write (fill) |
4606 | cp - memory copy | 4612 | cp - memory copy |
4607 | cmp - memory compare | 4613 | cmp - memory compare |
4608 | crc32 - checksum calculation | 4614 | crc32 - checksum calculation |
4609 | i2c - I2C sub-system | 4615 | i2c - I2C sub-system |
4610 | sspi - SPI utility commands | 4616 | sspi - SPI utility commands |
4611 | base - print or set address offset | 4617 | base - print or set address offset |
4612 | printenv- print environment variables | 4618 | printenv- print environment variables |
4613 | setenv - set environment variables | 4619 | setenv - set environment variables |
4614 | saveenv - save environment variables to persistent storage | 4620 | saveenv - save environment variables to persistent storage |
4615 | protect - enable or disable FLASH write protection | 4621 | protect - enable or disable FLASH write protection |
4616 | erase - erase FLASH memory | 4622 | erase - erase FLASH memory |
4617 | flinfo - print FLASH memory information | 4623 | flinfo - print FLASH memory information |
4618 | nand - NAND memory operations (see doc/README.nand) | 4624 | nand - NAND memory operations (see doc/README.nand) |
4619 | bdinfo - print Board Info structure | 4625 | bdinfo - print Board Info structure |
4620 | iminfo - print header information for application image | 4626 | iminfo - print header information for application image |
4621 | coninfo - print console devices and informations | 4627 | coninfo - print console devices and informations |
4622 | ide - IDE sub-system | 4628 | ide - IDE sub-system |
4623 | loop - infinite loop on address range | 4629 | loop - infinite loop on address range |
4624 | loopw - infinite write loop on address range | 4630 | loopw - infinite write loop on address range |
4625 | mtest - simple RAM test | 4631 | mtest - simple RAM test |
4626 | icache - enable or disable instruction cache | 4632 | icache - enable or disable instruction cache |
4627 | dcache - enable or disable data cache | 4633 | dcache - enable or disable data cache |
4628 | reset - Perform RESET of the CPU | 4634 | reset - Perform RESET of the CPU |
4629 | echo - echo args to console | 4635 | echo - echo args to console |
4630 | version - print monitor version | 4636 | version - print monitor version |
4631 | help - print online help | 4637 | help - print online help |
4632 | ? - alias for 'help' | 4638 | ? - alias for 'help' |
4633 | 4639 | ||
4634 | 4640 | ||
4635 | Monitor Commands - Detailed Description: | 4641 | Monitor Commands - Detailed Description: |
4636 | ======================================== | 4642 | ======================================== |
4637 | 4643 | ||
4638 | TODO. | 4644 | TODO. |
4639 | 4645 | ||
4640 | For now: just type "help <command>". | 4646 | For now: just type "help <command>". |
4641 | 4647 | ||
4642 | 4648 | ||
4643 | Environment Variables: | 4649 | Environment Variables: |
4644 | ====================== | 4650 | ====================== |
4645 | 4651 | ||
4646 | U-Boot supports user configuration using Environment Variables which | 4652 | U-Boot supports user configuration using Environment Variables which |
4647 | can be made persistent by saving to Flash memory. | 4653 | can be made persistent by saving to Flash memory. |
4648 | 4654 | ||
4649 | Environment Variables are set using "setenv", printed using | 4655 | Environment Variables are set using "setenv", printed using |
4650 | "printenv", and saved to Flash using "saveenv". Using "setenv" | 4656 | "printenv", and saved to Flash using "saveenv". Using "setenv" |
4651 | without a value can be used to delete a variable from the | 4657 | without a value can be used to delete a variable from the |
4652 | environment. As long as you don't save the environment you are | 4658 | environment. As long as you don't save the environment you are |
4653 | working with an in-memory copy. In case the Flash area containing the | 4659 | working with an in-memory copy. In case the Flash area containing the |
4654 | environment is erased by accident, a default environment is provided. | 4660 | environment is erased by accident, a default environment is provided. |
4655 | 4661 | ||
4656 | Some configuration options can be set using Environment Variables. | 4662 | Some configuration options can be set using Environment Variables. |
4657 | 4663 | ||
4658 | List of environment variables (most likely not complete): | 4664 | List of environment variables (most likely not complete): |
4659 | 4665 | ||
4660 | baudrate - see CONFIG_BAUDRATE | 4666 | baudrate - see CONFIG_BAUDRATE |
4661 | 4667 | ||
4662 | bootdelay - see CONFIG_BOOTDELAY | 4668 | bootdelay - see CONFIG_BOOTDELAY |
4663 | 4669 | ||
4664 | bootcmd - see CONFIG_BOOTCOMMAND | 4670 | bootcmd - see CONFIG_BOOTCOMMAND |
4665 | 4671 | ||
4666 | bootargs - Boot arguments when booting an RTOS image | 4672 | bootargs - Boot arguments when booting an RTOS image |
4667 | 4673 | ||
4668 | bootfile - Name of the image to load with TFTP | 4674 | bootfile - Name of the image to load with TFTP |
4669 | 4675 | ||
4670 | bootm_low - Memory range available for image processing in the bootm | 4676 | bootm_low - Memory range available for image processing in the bootm |
4671 | command can be restricted. This variable is given as | 4677 | command can be restricted. This variable is given as |
4672 | a hexadecimal number and defines lowest address allowed | 4678 | a hexadecimal number and defines lowest address allowed |
4673 | for use by the bootm command. See also "bootm_size" | 4679 | for use by the bootm command. See also "bootm_size" |
4674 | environment variable. Address defined by "bootm_low" is | 4680 | environment variable. Address defined by "bootm_low" is |
4675 | also the base of the initial memory mapping for the Linux | 4681 | also the base of the initial memory mapping for the Linux |
4676 | kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and | 4682 | kernel -- see the description of CONFIG_SYS_BOOTMAPSZ and |
4677 | bootm_mapsize. | 4683 | bootm_mapsize. |
4678 | 4684 | ||
4679 | bootm_mapsize - Size of the initial memory mapping for the Linux kernel. | 4685 | bootm_mapsize - Size of the initial memory mapping for the Linux kernel. |
4680 | This variable is given as a hexadecimal number and it | 4686 | This variable is given as a hexadecimal number and it |
4681 | defines the size of the memory region starting at base | 4687 | defines the size of the memory region starting at base |
4682 | address bootm_low that is accessible by the Linux kernel | 4688 | address bootm_low that is accessible by the Linux kernel |
4683 | during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used | 4689 | during early boot. If unset, CONFIG_SYS_BOOTMAPSZ is used |
4684 | as the default value if it is defined, and bootm_size is | 4690 | as the default value if it is defined, and bootm_size is |
4685 | used otherwise. | 4691 | used otherwise. |
4686 | 4692 | ||
4687 | bootm_size - Memory range available for image processing in the bootm | 4693 | bootm_size - Memory range available for image processing in the bootm |
4688 | command can be restricted. This variable is given as | 4694 | command can be restricted. This variable is given as |
4689 | a hexadecimal number and defines the size of the region | 4695 | a hexadecimal number and defines the size of the region |
4690 | allowed for use by the bootm command. See also "bootm_low" | 4696 | allowed for use by the bootm command. See also "bootm_low" |
4691 | environment variable. | 4697 | environment variable. |
4692 | 4698 | ||
4693 | updatefile - Location of the software update file on a TFTP server, used | 4699 | updatefile - Location of the software update file on a TFTP server, used |
4694 | by the automatic software update feature. Please refer to | 4700 | by the automatic software update feature. Please refer to |
4695 | documentation in doc/README.update for more details. | 4701 | documentation in doc/README.update for more details. |
4696 | 4702 | ||
4697 | autoload - if set to "no" (any string beginning with 'n'), | 4703 | autoload - if set to "no" (any string beginning with 'n'), |
4698 | "bootp" will just load perform a lookup of the | 4704 | "bootp" will just load perform a lookup of the |
4699 | configuration from the BOOTP server, but not try to | 4705 | configuration from the BOOTP server, but not try to |
4700 | load any image using TFTP | 4706 | load any image using TFTP |
4701 | 4707 | ||
4702 | autostart - if set to "yes", an image loaded using the "bootp", | 4708 | autostart - if set to "yes", an image loaded using the "bootp", |
4703 | "rarpboot", "tftpboot" or "diskboot" commands will | 4709 | "rarpboot", "tftpboot" or "diskboot" commands will |
4704 | be automatically started (by internally calling | 4710 | be automatically started (by internally calling |
4705 | "bootm") | 4711 | "bootm") |
4706 | 4712 | ||
4707 | If set to "no", a standalone image passed to the | 4713 | If set to "no", a standalone image passed to the |
4708 | "bootm" command will be copied to the load address | 4714 | "bootm" command will be copied to the load address |
4709 | (and eventually uncompressed), but NOT be started. | 4715 | (and eventually uncompressed), but NOT be started. |
4710 | This can be used to load and uncompress arbitrary | 4716 | This can be used to load and uncompress arbitrary |
4711 | data. | 4717 | data. |
4712 | 4718 | ||
4713 | fdt_high - if set this restricts the maximum address that the | 4719 | fdt_high - if set this restricts the maximum address that the |
4714 | flattened device tree will be copied into upon boot. | 4720 | flattened device tree will be copied into upon boot. |
4715 | For example, if you have a system with 1 GB memory | 4721 | For example, if you have a system with 1 GB memory |
4716 | at physical address 0x10000000, while Linux kernel | 4722 | at physical address 0x10000000, while Linux kernel |
4717 | only recognizes the first 704 MB as low memory, you | 4723 | only recognizes the first 704 MB as low memory, you |
4718 | may need to set fdt_high as 0x3C000000 to have the | 4724 | may need to set fdt_high as 0x3C000000 to have the |
4719 | device tree blob be copied to the maximum address | 4725 | device tree blob be copied to the maximum address |
4720 | of the 704 MB low memory, so that Linux kernel can | 4726 | of the 704 MB low memory, so that Linux kernel can |
4721 | access it during the boot procedure. | 4727 | access it during the boot procedure. |
4722 | 4728 | ||
4723 | If this is set to the special value 0xFFFFFFFF then | 4729 | If this is set to the special value 0xFFFFFFFF then |
4724 | the fdt will not be copied at all on boot. For this | 4730 | the fdt will not be copied at all on boot. For this |
4725 | to work it must reside in writable memory, have | 4731 | to work it must reside in writable memory, have |
4726 | sufficient padding on the end of it for u-boot to | 4732 | sufficient padding on the end of it for u-boot to |
4727 | add the information it needs into it, and the memory | 4733 | add the information it needs into it, and the memory |
4728 | must be accessible by the kernel. | 4734 | must be accessible by the kernel. |
4729 | 4735 | ||
4730 | fdtcontroladdr- if set this is the address of the control flattened | 4736 | fdtcontroladdr- if set this is the address of the control flattened |
4731 | device tree used by U-Boot when CONFIG_OF_CONTROL is | 4737 | device tree used by U-Boot when CONFIG_OF_CONTROL is |
4732 | defined. | 4738 | defined. |
4733 | 4739 | ||
4734 | i2cfast - (PPC405GP|PPC405EP only) | 4740 | i2cfast - (PPC405GP|PPC405EP only) |
4735 | if set to 'y' configures Linux I2C driver for fast | 4741 | if set to 'y' configures Linux I2C driver for fast |
4736 | mode (400kHZ). This environment variable is used in | 4742 | mode (400kHZ). This environment variable is used in |
4737 | initialization code. So, for changes to be effective | 4743 | initialization code. So, for changes to be effective |
4738 | it must be saved and board must be reset. | 4744 | it must be saved and board must be reset. |
4739 | 4745 | ||
4740 | initrd_high - restrict positioning of initrd images: | 4746 | initrd_high - restrict positioning of initrd images: |
4741 | If this variable is not set, initrd images will be | 4747 | If this variable is not set, initrd images will be |
4742 | copied to the highest possible address in RAM; this | 4748 | copied to the highest possible address in RAM; this |
4743 | is usually what you want since it allows for | 4749 | is usually what you want since it allows for |
4744 | maximum initrd size. If for some reason you want to | 4750 | maximum initrd size. If for some reason you want to |
4745 | make sure that the initrd image is loaded below the | 4751 | make sure that the initrd image is loaded below the |
4746 | CONFIG_SYS_BOOTMAPSZ limit, you can set this environment | 4752 | CONFIG_SYS_BOOTMAPSZ limit, you can set this environment |
4747 | variable to a value of "no" or "off" or "0". | 4753 | variable to a value of "no" or "off" or "0". |
4748 | Alternatively, you can set it to a maximum upper | 4754 | Alternatively, you can set it to a maximum upper |
4749 | address to use (U-Boot will still check that it | 4755 | address to use (U-Boot will still check that it |
4750 | does not overwrite the U-Boot stack and data). | 4756 | does not overwrite the U-Boot stack and data). |
4751 | 4757 | ||
4752 | For instance, when you have a system with 16 MB | 4758 | For instance, when you have a system with 16 MB |
4753 | RAM, and want to reserve 4 MB from use by Linux, | 4759 | RAM, and want to reserve 4 MB from use by Linux, |
4754 | you can do this by adding "mem=12M" to the value of | 4760 | you can do this by adding "mem=12M" to the value of |
4755 | the "bootargs" variable. However, now you must make | 4761 | the "bootargs" variable. However, now you must make |
4756 | sure that the initrd image is placed in the first | 4762 | sure that the initrd image is placed in the first |
4757 | 12 MB as well - this can be done with | 4763 | 12 MB as well - this can be done with |
4758 | 4764 | ||
4759 | setenv initrd_high 00c00000 | 4765 | setenv initrd_high 00c00000 |
4760 | 4766 | ||
4761 | If you set initrd_high to 0xFFFFFFFF, this is an | 4767 | If you set initrd_high to 0xFFFFFFFF, this is an |
4762 | indication to U-Boot that all addresses are legal | 4768 | indication to U-Boot that all addresses are legal |
4763 | for the Linux kernel, including addresses in flash | 4769 | for the Linux kernel, including addresses in flash |
4764 | memory. In this case U-Boot will NOT COPY the | 4770 | memory. In this case U-Boot will NOT COPY the |
4765 | ramdisk at all. This may be useful to reduce the | 4771 | ramdisk at all. This may be useful to reduce the |
4766 | boot time on your system, but requires that this | 4772 | boot time on your system, but requires that this |
4767 | feature is supported by your Linux kernel. | 4773 | feature is supported by your Linux kernel. |
4768 | 4774 | ||
4769 | ipaddr - IP address; needed for tftpboot command | 4775 | ipaddr - IP address; needed for tftpboot command |
4770 | 4776 | ||
4771 | loadaddr - Default load address for commands like "bootp", | 4777 | loadaddr - Default load address for commands like "bootp", |
4772 | "rarpboot", "tftpboot", "loadb" or "diskboot" | 4778 | "rarpboot", "tftpboot", "loadb" or "diskboot" |
4773 | 4779 | ||
4774 | loads_echo - see CONFIG_LOADS_ECHO | 4780 | loads_echo - see CONFIG_LOADS_ECHO |
4775 | 4781 | ||
4776 | serverip - TFTP server IP address; needed for tftpboot command | 4782 | serverip - TFTP server IP address; needed for tftpboot command |
4777 | 4783 | ||
4778 | bootretry - see CONFIG_BOOT_RETRY_TIME | 4784 | bootretry - see CONFIG_BOOT_RETRY_TIME |
4779 | 4785 | ||
4780 | bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR | 4786 | bootdelaykey - see CONFIG_AUTOBOOT_DELAY_STR |
4781 | 4787 | ||
4782 | bootstopkey - see CONFIG_AUTOBOOT_STOP_STR | 4788 | bootstopkey - see CONFIG_AUTOBOOT_STOP_STR |
4783 | 4789 | ||
4784 | ethprime - controls which interface is used first. | 4790 | ethprime - controls which interface is used first. |
4785 | 4791 | ||
4786 | ethact - controls which interface is currently active. | 4792 | ethact - controls which interface is currently active. |
4787 | For example you can do the following | 4793 | For example you can do the following |
4788 | 4794 | ||
4789 | => setenv ethact FEC | 4795 | => setenv ethact FEC |
4790 | => ping 192.168.0.1 # traffic sent on FEC | 4796 | => ping 192.168.0.1 # traffic sent on FEC |
4791 | => setenv ethact SCC | 4797 | => setenv ethact SCC |
4792 | => ping 10.0.0.1 # traffic sent on SCC | 4798 | => ping 10.0.0.1 # traffic sent on SCC |
4793 | 4799 | ||
4794 | ethrotate - When set to "no" U-Boot does not go through all | 4800 | ethrotate - When set to "no" U-Boot does not go through all |
4795 | available network interfaces. | 4801 | available network interfaces. |
4796 | It just stays at the currently selected interface. | 4802 | It just stays at the currently selected interface. |
4797 | 4803 | ||
4798 | netretry - When set to "no" each network operation will | 4804 | netretry - When set to "no" each network operation will |
4799 | either succeed or fail without retrying. | 4805 | either succeed or fail without retrying. |
4800 | When set to "once" the network operation will | 4806 | When set to "once" the network operation will |
4801 | fail when all the available network interfaces | 4807 | fail when all the available network interfaces |
4802 | are tried once without success. | 4808 | are tried once without success. |
4803 | Useful on scripts which control the retry operation | 4809 | Useful on scripts which control the retry operation |
4804 | themselves. | 4810 | themselves. |
4805 | 4811 | ||
4806 | npe_ucode - set load address for the NPE microcode | 4812 | npe_ucode - set load address for the NPE microcode |
4807 | 4813 | ||
4808 | silent_linux - If set then linux will be told to boot silently, by | 4814 | silent_linux - If set then linux will be told to boot silently, by |
4809 | changing the console to be empty. If "yes" it will be | 4815 | changing the console to be empty. If "yes" it will be |
4810 | made silent. If "no" it will not be made silent. If | 4816 | made silent. If "no" it will not be made silent. If |
4811 | unset, then it will be made silent if the U-Boot console | 4817 | unset, then it will be made silent if the U-Boot console |
4812 | is silent. | 4818 | is silent. |
4813 | 4819 | ||
4814 | tftpsrcport - If this is set, the value is used for TFTP's | 4820 | tftpsrcport - If this is set, the value is used for TFTP's |
4815 | UDP source port. | 4821 | UDP source port. |
4816 | 4822 | ||
4817 | tftpdstport - If this is set, the value is used for TFTP's UDP | 4823 | tftpdstport - If this is set, the value is used for TFTP's UDP |
4818 | destination port instead of the Well Know Port 69. | 4824 | destination port instead of the Well Know Port 69. |
4819 | 4825 | ||
4820 | tftpblocksize - Block size to use for TFTP transfers; if not set, | 4826 | tftpblocksize - Block size to use for TFTP transfers; if not set, |
4821 | we use the TFTP server's default block size | 4827 | we use the TFTP server's default block size |
4822 | 4828 | ||
4823 | tftptimeout - Retransmission timeout for TFTP packets (in milli- | 4829 | tftptimeout - Retransmission timeout for TFTP packets (in milli- |
4824 | seconds, minimum value is 1000 = 1 second). Defines | 4830 | seconds, minimum value is 1000 = 1 second). Defines |
4825 | when a packet is considered to be lost so it has to | 4831 | when a packet is considered to be lost so it has to |
4826 | be retransmitted. The default is 5000 = 5 seconds. | 4832 | be retransmitted. The default is 5000 = 5 seconds. |
4827 | Lowering this value may make downloads succeed | 4833 | Lowering this value may make downloads succeed |
4828 | faster in networks with high packet loss rates or | 4834 | faster in networks with high packet loss rates or |
4829 | with unreliable TFTP servers. | 4835 | with unreliable TFTP servers. |
4830 | 4836 | ||
4831 | vlan - When set to a value < 4095 the traffic over | 4837 | vlan - When set to a value < 4095 the traffic over |
4832 | Ethernet is encapsulated/received over 802.1q | 4838 | Ethernet is encapsulated/received over 802.1q |
4833 | VLAN tagged frames. | 4839 | VLAN tagged frames. |
4834 | 4840 | ||
4835 | The following image location variables contain the location of images | 4841 | The following image location variables contain the location of images |
4836 | used in booting. The "Image" column gives the role of the image and is | 4842 | used in booting. The "Image" column gives the role of the image and is |
4837 | not an environment variable name. The other columns are environment | 4843 | not an environment variable name. The other columns are environment |
4838 | variable names. "File Name" gives the name of the file on a TFTP | 4844 | variable names. "File Name" gives the name of the file on a TFTP |
4839 | server, "RAM Address" gives the location in RAM the image will be | 4845 | server, "RAM Address" gives the location in RAM the image will be |
4840 | loaded to, and "Flash Location" gives the image's address in NOR | 4846 | loaded to, and "Flash Location" gives the image's address in NOR |
4841 | flash or offset in NAND flash. | 4847 | flash or offset in NAND flash. |
4842 | 4848 | ||
4843 | *Note* - these variables don't have to be defined for all boards, some | 4849 | *Note* - these variables don't have to be defined for all boards, some |
4844 | boards currenlty use other variables for these purposes, and some | 4850 | boards currenlty use other variables for these purposes, and some |
4845 | boards use these variables for other purposes. | 4851 | boards use these variables for other purposes. |
4846 | 4852 | ||
4847 | Image File Name RAM Address Flash Location | 4853 | Image File Name RAM Address Flash Location |
4848 | ----- --------- ----------- -------------- | 4854 | ----- --------- ----------- -------------- |
4849 | u-boot u-boot u-boot_addr_r u-boot_addr | 4855 | u-boot u-boot u-boot_addr_r u-boot_addr |
4850 | Linux kernel bootfile kernel_addr_r kernel_addr | 4856 | Linux kernel bootfile kernel_addr_r kernel_addr |
4851 | device tree blob fdtfile fdt_addr_r fdt_addr | 4857 | device tree blob fdtfile fdt_addr_r fdt_addr |
4852 | ramdisk ramdiskfile ramdisk_addr_r ramdisk_addr | 4858 | ramdisk ramdiskfile ramdisk_addr_r ramdisk_addr |
4853 | 4859 | ||
4854 | The following environment variables may be used and automatically | 4860 | The following environment variables may be used and automatically |
4855 | updated by the network boot commands ("bootp" and "rarpboot"), | 4861 | updated by the network boot commands ("bootp" and "rarpboot"), |
4856 | depending the information provided by your boot server: | 4862 | depending the information provided by your boot server: |
4857 | 4863 | ||
4858 | bootfile - see above | 4864 | bootfile - see above |
4859 | dnsip - IP address of your Domain Name Server | 4865 | dnsip - IP address of your Domain Name Server |
4860 | dnsip2 - IP address of your secondary Domain Name Server | 4866 | dnsip2 - IP address of your secondary Domain Name Server |
4861 | gatewayip - IP address of the Gateway (Router) to use | 4867 | gatewayip - IP address of the Gateway (Router) to use |
4862 | hostname - Target hostname | 4868 | hostname - Target hostname |
4863 | ipaddr - see above | 4869 | ipaddr - see above |
4864 | netmask - Subnet Mask | 4870 | netmask - Subnet Mask |
4865 | rootpath - Pathname of the root filesystem on the NFS server | 4871 | rootpath - Pathname of the root filesystem on the NFS server |
4866 | serverip - see above | 4872 | serverip - see above |
4867 | 4873 | ||
4868 | 4874 | ||
4869 | There are two special Environment Variables: | 4875 | There are two special Environment Variables: |
4870 | 4876 | ||
4871 | serial# - contains hardware identification information such | 4877 | serial# - contains hardware identification information such |
4872 | as type string and/or serial number | 4878 | as type string and/or serial number |
4873 | ethaddr - Ethernet address | 4879 | ethaddr - Ethernet address |
4874 | 4880 | ||
4875 | These variables can be set only once (usually during manufacturing of | 4881 | These variables can be set only once (usually during manufacturing of |
4876 | the board). U-Boot refuses to delete or overwrite these variables | 4882 | the board). U-Boot refuses to delete or overwrite these variables |
4877 | once they have been set once. | 4883 | once they have been set once. |
4878 | 4884 | ||
4879 | 4885 | ||
4880 | Further special Environment Variables: | 4886 | Further special Environment Variables: |
4881 | 4887 | ||
4882 | ver - Contains the U-Boot version string as printed | 4888 | ver - Contains the U-Boot version string as printed |
4883 | with the "version" command. This variable is | 4889 | with the "version" command. This variable is |
4884 | readonly (see CONFIG_VERSION_VARIABLE). | 4890 | readonly (see CONFIG_VERSION_VARIABLE). |
4885 | 4891 | ||
4886 | 4892 | ||
4887 | Please note that changes to some configuration parameters may take | 4893 | Please note that changes to some configuration parameters may take |
4888 | only effect after the next boot (yes, that's just like Windoze :-). | 4894 | only effect after the next boot (yes, that's just like Windoze :-). |
4889 | 4895 | ||
4890 | 4896 | ||
4891 | Callback functions for environment variables: | 4897 | Callback functions for environment variables: |
4892 | --------------------------------------------- | 4898 | --------------------------------------------- |
4893 | 4899 | ||
4894 | For some environment variables, the behavior of u-boot needs to change | 4900 | For some environment variables, the behavior of u-boot needs to change |
4895 | when their values are changed. This functionailty allows functions to | 4901 | when their values are changed. This functionailty allows functions to |
4896 | be associated with arbitrary variables. On creation, overwrite, or | 4902 | be associated with arbitrary variables. On creation, overwrite, or |
4897 | deletion, the callback will provide the opportunity for some side | 4903 | deletion, the callback will provide the opportunity for some side |
4898 | effect to happen or for the change to be rejected. | 4904 | effect to happen or for the change to be rejected. |
4899 | 4905 | ||
4900 | The callbacks are named and associated with a function using the | 4906 | The callbacks are named and associated with a function using the |
4901 | U_BOOT_ENV_CALLBACK macro in your board or driver code. | 4907 | U_BOOT_ENV_CALLBACK macro in your board or driver code. |
4902 | 4908 | ||
4903 | These callbacks are associated with variables in one of two ways. The | 4909 | These callbacks are associated with variables in one of two ways. The |
4904 | static list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC | 4910 | static list can be added to by defining CONFIG_ENV_CALLBACK_LIST_STATIC |
4905 | in the board configuration to a string that defines a list of | 4911 | in the board configuration to a string that defines a list of |
4906 | associations. The list must be in the following format: | 4912 | associations. The list must be in the following format: |
4907 | 4913 | ||
4908 | entry = variable_name[:callback_name] | 4914 | entry = variable_name[:callback_name] |
4909 | list = entry[,list] | 4915 | list = entry[,list] |
4910 | 4916 | ||
4911 | If the callback name is not specified, then the callback is deleted. | 4917 | If the callback name is not specified, then the callback is deleted. |
4912 | Spaces are also allowed anywhere in the list. | 4918 | Spaces are also allowed anywhere in the list. |
4913 | 4919 | ||
4914 | Callbacks can also be associated by defining the ".callbacks" variable | 4920 | Callbacks can also be associated by defining the ".callbacks" variable |
4915 | with the same list format above. Any association in ".callbacks" will | 4921 | with the same list format above. Any association in ".callbacks" will |
4916 | override any association in the static list. You can define | 4922 | override any association in the static list. You can define |
4917 | CONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the | 4923 | CONFIG_ENV_CALLBACK_LIST_DEFAULT to a list (string) to define the |
4918 | ".callbacks" envirnoment variable in the default or embedded environment. | 4924 | ".callbacks" envirnoment variable in the default or embedded environment. |
4919 | 4925 | ||
4920 | 4926 | ||
4921 | Command Line Parsing: | 4927 | Command Line Parsing: |
4922 | ===================== | 4928 | ===================== |
4923 | 4929 | ||
4924 | There are two different command line parsers available with U-Boot: | 4930 | There are two different command line parsers available with U-Boot: |
4925 | the old "simple" one, and the much more powerful "hush" shell: | 4931 | the old "simple" one, and the much more powerful "hush" shell: |
4926 | 4932 | ||
4927 | Old, simple command line parser: | 4933 | Old, simple command line parser: |
4928 | -------------------------------- | 4934 | -------------------------------- |
4929 | 4935 | ||
4930 | - supports environment variables (through setenv / saveenv commands) | 4936 | - supports environment variables (through setenv / saveenv commands) |
4931 | - several commands on one line, separated by ';' | 4937 | - several commands on one line, separated by ';' |
4932 | - variable substitution using "... ${name} ..." syntax | 4938 | - variable substitution using "... ${name} ..." syntax |
4933 | - special characters ('$', ';') can be escaped by prefixing with '\', | 4939 | - special characters ('$', ';') can be escaped by prefixing with '\', |
4934 | for example: | 4940 | for example: |
4935 | setenv bootcmd bootm \${address} | 4941 | setenv bootcmd bootm \${address} |
4936 | - You can also escape text by enclosing in single apostrophes, for example: | 4942 | - You can also escape text by enclosing in single apostrophes, for example: |
4937 | setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' | 4943 | setenv addip 'setenv bootargs $bootargs ip=$ipaddr:$serverip:$gatewayip:$netmask:$hostname::off' |
4938 | 4944 | ||
4939 | Hush shell: | 4945 | Hush shell: |
4940 | ----------- | 4946 | ----------- |
4941 | 4947 | ||
4942 | - similar to Bourne shell, with control structures like | 4948 | - similar to Bourne shell, with control structures like |
4943 | if...then...else...fi, for...do...done; while...do...done, | 4949 | if...then...else...fi, for...do...done; while...do...done, |
4944 | until...do...done, ... | 4950 | until...do...done, ... |
4945 | - supports environment ("global") variables (through setenv / saveenv | 4951 | - supports environment ("global") variables (through setenv / saveenv |
4946 | commands) and local shell variables (through standard shell syntax | 4952 | commands) and local shell variables (through standard shell syntax |
4947 | "name=value"); only environment variables can be used with "run" | 4953 | "name=value"); only environment variables can be used with "run" |
4948 | command | 4954 | command |
4949 | 4955 | ||
4950 | General rules: | 4956 | General rules: |
4951 | -------------- | 4957 | -------------- |
4952 | 4958 | ||
4953 | (1) If a command line (or an environment variable executed by a "run" | 4959 | (1) If a command line (or an environment variable executed by a "run" |
4954 | command) contains several commands separated by semicolon, and | 4960 | command) contains several commands separated by semicolon, and |
4955 | one of these commands fails, then the remaining commands will be | 4961 | one of these commands fails, then the remaining commands will be |
4956 | executed anyway. | 4962 | executed anyway. |
4957 | 4963 | ||
4958 | (2) If you execute several variables with one call to run (i. e. | 4964 | (2) If you execute several variables with one call to run (i. e. |
4959 | calling run with a list of variables as arguments), any failing | 4965 | calling run with a list of variables as arguments), any failing |
4960 | command will cause "run" to terminate, i. e. the remaining | 4966 | command will cause "run" to terminate, i. e. the remaining |
4961 | variables are not executed. | 4967 | variables are not executed. |
4962 | 4968 | ||
4963 | Note for Redundant Ethernet Interfaces: | 4969 | Note for Redundant Ethernet Interfaces: |
4964 | ======================================= | 4970 | ======================================= |
4965 | 4971 | ||
4966 | Some boards come with redundant Ethernet interfaces; U-Boot supports | 4972 | Some boards come with redundant Ethernet interfaces; U-Boot supports |
4967 | such configurations and is capable of automatic selection of a | 4973 | such configurations and is capable of automatic selection of a |
4968 | "working" interface when needed. MAC assignment works as follows: | 4974 | "working" interface when needed. MAC assignment works as follows: |
4969 | 4975 | ||
4970 | Network interfaces are numbered eth0, eth1, eth2, ... Corresponding | 4976 | Network interfaces are numbered eth0, eth1, eth2, ... Corresponding |
4971 | MAC addresses can be stored in the environment as "ethaddr" (=>eth0), | 4977 | MAC addresses can be stored in the environment as "ethaddr" (=>eth0), |
4972 | "eth1addr" (=>eth1), "eth2addr", ... | 4978 | "eth1addr" (=>eth1), "eth2addr", ... |
4973 | 4979 | ||
4974 | If the network interface stores some valid MAC address (for instance | 4980 | If the network interface stores some valid MAC address (for instance |
4975 | in SROM), this is used as default address if there is NO correspon- | 4981 | in SROM), this is used as default address if there is NO correspon- |
4976 | ding setting in the environment; if the corresponding environment | 4982 | ding setting in the environment; if the corresponding environment |
4977 | variable is set, this overrides the settings in the card; that means: | 4983 | variable is set, this overrides the settings in the card; that means: |
4978 | 4984 | ||
4979 | o If the SROM has a valid MAC address, and there is no address in the | 4985 | o If the SROM has a valid MAC address, and there is no address in the |
4980 | environment, the SROM's address is used. | 4986 | environment, the SROM's address is used. |
4981 | 4987 | ||
4982 | o If there is no valid address in the SROM, and a definition in the | 4988 | o If there is no valid address in the SROM, and a definition in the |
4983 | environment exists, then the value from the environment variable is | 4989 | environment exists, then the value from the environment variable is |
4984 | used. | 4990 | used. |
4985 | 4991 | ||
4986 | o If both the SROM and the environment contain a MAC address, and | 4992 | o If both the SROM and the environment contain a MAC address, and |
4987 | both addresses are the same, this MAC address is used. | 4993 | both addresses are the same, this MAC address is used. |
4988 | 4994 | ||
4989 | o If both the SROM and the environment contain a MAC address, and the | 4995 | o If both the SROM and the environment contain a MAC address, and the |
4990 | addresses differ, the value from the environment is used and a | 4996 | addresses differ, the value from the environment is used and a |
4991 | warning is printed. | 4997 | warning is printed. |
4992 | 4998 | ||
4993 | o If neither SROM nor the environment contain a MAC address, an error | 4999 | o If neither SROM nor the environment contain a MAC address, an error |
4994 | is raised. | 5000 | is raised. |
4995 | 5001 | ||
4996 | If Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses | 5002 | If Ethernet drivers implement the 'write_hwaddr' function, valid MAC addresses |
4997 | will be programmed into hardware as part of the initialization process. This | 5003 | will be programmed into hardware as part of the initialization process. This |
4998 | may be skipped by setting the appropriate 'ethmacskip' environment variable. | 5004 | may be skipped by setting the appropriate 'ethmacskip' environment variable. |
4999 | The naming convention is as follows: | 5005 | The naming convention is as follows: |
5000 | "ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. | 5006 | "ethmacskip" (=>eth0), "eth1macskip" (=>eth1) etc. |
5001 | 5007 | ||
5002 | Image Formats: | 5008 | Image Formats: |
5003 | ============== | 5009 | ============== |
5004 | 5010 | ||
5005 | U-Boot is capable of booting (and performing other auxiliary operations on) | 5011 | U-Boot is capable of booting (and performing other auxiliary operations on) |
5006 | images in two formats: | 5012 | images in two formats: |
5007 | 5013 | ||
5008 | New uImage format (FIT) | 5014 | New uImage format (FIT) |
5009 | ----------------------- | 5015 | ----------------------- |
5010 | 5016 | ||
5011 | Flexible and powerful format based on Flattened Image Tree -- FIT (similar | 5017 | Flexible and powerful format based on Flattened Image Tree -- FIT (similar |
5012 | to Flattened Device Tree). It allows the use of images with multiple | 5018 | to Flattened Device Tree). It allows the use of images with multiple |
5013 | components (several kernels, ramdisks, etc.), with contents protected by | 5019 | components (several kernels, ramdisks, etc.), with contents protected by |
5014 | SHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. | 5020 | SHA1, MD5 or CRC32. More details are found in the doc/uImage.FIT directory. |
5015 | 5021 | ||
5016 | 5022 | ||
5017 | Old uImage format | 5023 | Old uImage format |
5018 | ----------------- | 5024 | ----------------- |
5019 | 5025 | ||
5020 | Old image format is based on binary files which can be basically anything, | 5026 | Old image format is based on binary files which can be basically anything, |
5021 | preceded by a special header; see the definitions in include/image.h for | 5027 | preceded by a special header; see the definitions in include/image.h for |
5022 | details; basically, the header defines the following image properties: | 5028 | details; basically, the header defines the following image properties: |
5023 | 5029 | ||
5024 | * Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, | 5030 | * Target Operating System (Provisions for OpenBSD, NetBSD, FreeBSD, |
5025 | 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, | 5031 | 4.4BSD, Linux, SVR4, Esix, Solaris, Irix, SCO, Dell, NCR, VxWorks, |
5026 | LynxOS, pSOS, QNX, RTEMS, INTEGRITY; | 5032 | LynxOS, pSOS, QNX, RTEMS, INTEGRITY; |
5027 | Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, | 5033 | Currently supported: Linux, NetBSD, VxWorks, QNX, RTEMS, LynxOS, |
5028 | INTEGRITY). | 5034 | INTEGRITY). |
5029 | * Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, | 5035 | * Target CPU Architecture (Provisions for Alpha, ARM, AVR32, Intel x86, |
5030 | IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; | 5036 | IA64, MIPS, NDS32, Nios II, PowerPC, IBM S390, SuperH, Sparc, Sparc 64 Bit; |
5031 | Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). | 5037 | Currently supported: ARM, AVR32, Intel x86, MIPS, NDS32, Nios II, PowerPC). |
5032 | * Compression Type (uncompressed, gzip, bzip2) | 5038 | * Compression Type (uncompressed, gzip, bzip2) |
5033 | * Load Address | 5039 | * Load Address |
5034 | * Entry Point | 5040 | * Entry Point |
5035 | * Image Name | 5041 | * Image Name |
5036 | * Image Timestamp | 5042 | * Image Timestamp |
5037 | 5043 | ||
5038 | The header is marked by a special Magic Number, and both the header | 5044 | The header is marked by a special Magic Number, and both the header |
5039 | and the data portions of the image are secured against corruption by | 5045 | and the data portions of the image are secured against corruption by |
5040 | CRC32 checksums. | 5046 | CRC32 checksums. |
5041 | 5047 | ||
5042 | 5048 | ||
5043 | Linux Support: | 5049 | Linux Support: |
5044 | ============== | 5050 | ============== |
5045 | 5051 | ||
5046 | Although U-Boot should support any OS or standalone application | 5052 | Although U-Boot should support any OS or standalone application |
5047 | easily, the main focus has always been on Linux during the design of | 5053 | easily, the main focus has always been on Linux during the design of |
5048 | U-Boot. | 5054 | U-Boot. |
5049 | 5055 | ||
5050 | U-Boot includes many features that so far have been part of some | 5056 | U-Boot includes many features that so far have been part of some |
5051 | special "boot loader" code within the Linux kernel. Also, any | 5057 | special "boot loader" code within the Linux kernel. Also, any |
5052 | "initrd" images to be used are no longer part of one big Linux image; | 5058 | "initrd" images to be used are no longer part of one big Linux image; |
5053 | instead, kernel and "initrd" are separate images. This implementation | 5059 | instead, kernel and "initrd" are separate images. This implementation |
5054 | serves several purposes: | 5060 | serves several purposes: |
5055 | 5061 | ||
5056 | - the same features can be used for other OS or standalone | 5062 | - the same features can be used for other OS or standalone |
5057 | applications (for instance: using compressed images to reduce the | 5063 | applications (for instance: using compressed images to reduce the |
5058 | Flash memory footprint) | 5064 | Flash memory footprint) |
5059 | 5065 | ||
5060 | - it becomes much easier to port new Linux kernel versions because | 5066 | - it becomes much easier to port new Linux kernel versions because |
5061 | lots of low-level, hardware dependent stuff are done by U-Boot | 5067 | lots of low-level, hardware dependent stuff are done by U-Boot |
5062 | 5068 | ||
5063 | - the same Linux kernel image can now be used with different "initrd" | 5069 | - the same Linux kernel image can now be used with different "initrd" |
5064 | images; of course this also means that different kernel images can | 5070 | images; of course this also means that different kernel images can |
5065 | be run with the same "initrd". This makes testing easier (you don't | 5071 | be run with the same "initrd". This makes testing easier (you don't |
5066 | have to build a new "zImage.initrd" Linux image when you just | 5072 | have to build a new "zImage.initrd" Linux image when you just |
5067 | change a file in your "initrd"). Also, a field-upgrade of the | 5073 | change a file in your "initrd"). Also, a field-upgrade of the |
5068 | software is easier now. | 5074 | software is easier now. |
5069 | 5075 | ||
5070 | 5076 | ||
5071 | Linux HOWTO: | 5077 | Linux HOWTO: |
5072 | ============ | 5078 | ============ |
5073 | 5079 | ||
5074 | Porting Linux to U-Boot based systems: | 5080 | Porting Linux to U-Boot based systems: |
5075 | --------------------------------------- | 5081 | --------------------------------------- |
5076 | 5082 | ||
5077 | U-Boot cannot save you from doing all the necessary modifications to | 5083 | U-Boot cannot save you from doing all the necessary modifications to |
5078 | configure the Linux device drivers for use with your target hardware | 5084 | configure the Linux device drivers for use with your target hardware |
5079 | (no, we don't intend to provide a full virtual machine interface to | 5085 | (no, we don't intend to provide a full virtual machine interface to |
5080 | Linux :-). | 5086 | Linux :-). |
5081 | 5087 | ||
5082 | But now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). | 5088 | But now you can ignore ALL boot loader code (in arch/powerpc/mbxboot). |
5083 | 5089 | ||
5084 | Just make sure your machine specific header file (for instance | 5090 | Just make sure your machine specific header file (for instance |
5085 | include/asm-ppc/tqm8xx.h) includes the same definition of the Board | 5091 | include/asm-ppc/tqm8xx.h) includes the same definition of the Board |
5086 | Information structure as we define in include/asm-<arch>/u-boot.h, | 5092 | Information structure as we define in include/asm-<arch>/u-boot.h, |
5087 | and make sure that your definition of IMAP_ADDR uses the same value | 5093 | and make sure that your definition of IMAP_ADDR uses the same value |
5088 | as your U-Boot configuration in CONFIG_SYS_IMMR. | 5094 | as your U-Boot configuration in CONFIG_SYS_IMMR. |
5089 | 5095 | ||
5090 | 5096 | ||
5091 | Configuring the Linux kernel: | 5097 | Configuring the Linux kernel: |
5092 | ----------------------------- | 5098 | ----------------------------- |
5093 | 5099 | ||
5094 | No specific requirements for U-Boot. Make sure you have some root | 5100 | No specific requirements for U-Boot. Make sure you have some root |
5095 | device (initial ramdisk, NFS) for your target system. | 5101 | device (initial ramdisk, NFS) for your target system. |
5096 | 5102 | ||
5097 | 5103 | ||
5098 | Building a Linux Image: | 5104 | Building a Linux Image: |
5099 | ----------------------- | 5105 | ----------------------- |
5100 | 5106 | ||
5101 | With U-Boot, "normal" build targets like "zImage" or "bzImage" are | 5107 | With U-Boot, "normal" build targets like "zImage" or "bzImage" are |
5102 | not used. If you use recent kernel source, a new build target | 5108 | not used. If you use recent kernel source, a new build target |
5103 | "uImage" will exist which automatically builds an image usable by | 5109 | "uImage" will exist which automatically builds an image usable by |
5104 | U-Boot. Most older kernels also have support for a "pImage" target, | 5110 | U-Boot. Most older kernels also have support for a "pImage" target, |
5105 | which was introduced for our predecessor project PPCBoot and uses a | 5111 | which was introduced for our predecessor project PPCBoot and uses a |
5106 | 100% compatible format. | 5112 | 100% compatible format. |
5107 | 5113 | ||
5108 | Example: | 5114 | Example: |
5109 | 5115 | ||
5110 | make TQM850L_config | 5116 | make TQM850L_config |
5111 | make oldconfig | 5117 | make oldconfig |
5112 | make dep | 5118 | make dep |
5113 | make uImage | 5119 | make uImage |
5114 | 5120 | ||
5115 | The "uImage" build target uses a special tool (in 'tools/mkimage') to | 5121 | The "uImage" build target uses a special tool (in 'tools/mkimage') to |
5116 | encapsulate a compressed Linux kernel image with header information, | 5122 | encapsulate a compressed Linux kernel image with header information, |
5117 | CRC32 checksum etc. for use with U-Boot. This is what we are doing: | 5123 | CRC32 checksum etc. for use with U-Boot. This is what we are doing: |
5118 | 5124 | ||
5119 | * build a standard "vmlinux" kernel image (in ELF binary format): | 5125 | * build a standard "vmlinux" kernel image (in ELF binary format): |
5120 | 5126 | ||
5121 | * convert the kernel into a raw binary image: | 5127 | * convert the kernel into a raw binary image: |
5122 | 5128 | ||
5123 | ${CROSS_COMPILE}-objcopy -O binary \ | 5129 | ${CROSS_COMPILE}-objcopy -O binary \ |
5124 | -R .note -R .comment \ | 5130 | -R .note -R .comment \ |
5125 | -S vmlinux linux.bin | 5131 | -S vmlinux linux.bin |
5126 | 5132 | ||
5127 | * compress the binary image: | 5133 | * compress the binary image: |
5128 | 5134 | ||
5129 | gzip -9 linux.bin | 5135 | gzip -9 linux.bin |
5130 | 5136 | ||
5131 | * package compressed binary image for U-Boot: | 5137 | * package compressed binary image for U-Boot: |
5132 | 5138 | ||
5133 | mkimage -A ppc -O linux -T kernel -C gzip \ | 5139 | mkimage -A ppc -O linux -T kernel -C gzip \ |
5134 | -a 0 -e 0 -n "Linux Kernel Image" \ | 5140 | -a 0 -e 0 -n "Linux Kernel Image" \ |
5135 | -d linux.bin.gz uImage | 5141 | -d linux.bin.gz uImage |
5136 | 5142 | ||
5137 | 5143 | ||
5138 | The "mkimage" tool can also be used to create ramdisk images for use | 5144 | The "mkimage" tool can also be used to create ramdisk images for use |
5139 | with U-Boot, either separated from the Linux kernel image, or | 5145 | with U-Boot, either separated from the Linux kernel image, or |
5140 | combined into one file. "mkimage" encapsulates the images with a 64 | 5146 | combined into one file. "mkimage" encapsulates the images with a 64 |
5141 | byte header containing information about target architecture, | 5147 | byte header containing information about target architecture, |
5142 | operating system, image type, compression method, entry points, time | 5148 | operating system, image type, compression method, entry points, time |
5143 | stamp, CRC32 checksums, etc. | 5149 | stamp, CRC32 checksums, etc. |
5144 | 5150 | ||
5145 | "mkimage" can be called in two ways: to verify existing images and | 5151 | "mkimage" can be called in two ways: to verify existing images and |
5146 | print the header information, or to build new images. | 5152 | print the header information, or to build new images. |
5147 | 5153 | ||
5148 | In the first form (with "-l" option) mkimage lists the information | 5154 | In the first form (with "-l" option) mkimage lists the information |
5149 | contained in the header of an existing U-Boot image; this includes | 5155 | contained in the header of an existing U-Boot image; this includes |
5150 | checksum verification: | 5156 | checksum verification: |
5151 | 5157 | ||
5152 | tools/mkimage -l image | 5158 | tools/mkimage -l image |
5153 | -l ==> list image header information | 5159 | -l ==> list image header information |
5154 | 5160 | ||
5155 | The second form (with "-d" option) is used to build a U-Boot image | 5161 | The second form (with "-d" option) is used to build a U-Boot image |
5156 | from a "data file" which is used as image payload: | 5162 | from a "data file" which is used as image payload: |
5157 | 5163 | ||
5158 | tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ | 5164 | tools/mkimage -A arch -O os -T type -C comp -a addr -e ep \ |
5159 | -n name -d data_file image | 5165 | -n name -d data_file image |
5160 | -A ==> set architecture to 'arch' | 5166 | -A ==> set architecture to 'arch' |
5161 | -O ==> set operating system to 'os' | 5167 | -O ==> set operating system to 'os' |
5162 | -T ==> set image type to 'type' | 5168 | -T ==> set image type to 'type' |
5163 | -C ==> set compression type 'comp' | 5169 | -C ==> set compression type 'comp' |
5164 | -a ==> set load address to 'addr' (hex) | 5170 | -a ==> set load address to 'addr' (hex) |
5165 | -e ==> set entry point to 'ep' (hex) | 5171 | -e ==> set entry point to 'ep' (hex) |
5166 | -n ==> set image name to 'name' | 5172 | -n ==> set image name to 'name' |
5167 | -d ==> use image data from 'datafile' | 5173 | -d ==> use image data from 'datafile' |
5168 | 5174 | ||
5169 | Right now, all Linux kernels for PowerPC systems use the same load | 5175 | Right now, all Linux kernels for PowerPC systems use the same load |
5170 | address (0x00000000), but the entry point address depends on the | 5176 | address (0x00000000), but the entry point address depends on the |
5171 | kernel version: | 5177 | kernel version: |
5172 | 5178 | ||
5173 | - 2.2.x kernels have the entry point at 0x0000000C, | 5179 | - 2.2.x kernels have the entry point at 0x0000000C, |
5174 | - 2.3.x and later kernels have the entry point at 0x00000000. | 5180 | - 2.3.x and later kernels have the entry point at 0x00000000. |
5175 | 5181 | ||
5176 | So a typical call to build a U-Boot image would read: | 5182 | So a typical call to build a U-Boot image would read: |
5177 | 5183 | ||
5178 | -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ | 5184 | -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ |
5179 | > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ | 5185 | > -A ppc -O linux -T kernel -C gzip -a 0 -e 0 \ |
5180 | > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ | 5186 | > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz \ |
5181 | > examples/uImage.TQM850L | 5187 | > examples/uImage.TQM850L |
5182 | Image Name: 2.4.4 kernel for TQM850L | 5188 | Image Name: 2.4.4 kernel for TQM850L |
5183 | Created: Wed Jul 19 02:34:59 2000 | 5189 | Created: Wed Jul 19 02:34:59 2000 |
5184 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5190 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5185 | Data Size: 335725 Bytes = 327.86 kB = 0.32 MB | 5191 | Data Size: 335725 Bytes = 327.86 kB = 0.32 MB |
5186 | Load Address: 0x00000000 | 5192 | Load Address: 0x00000000 |
5187 | Entry Point: 0x00000000 | 5193 | Entry Point: 0x00000000 |
5188 | 5194 | ||
5189 | To verify the contents of the image (or check for corruption): | 5195 | To verify the contents of the image (or check for corruption): |
5190 | 5196 | ||
5191 | -> tools/mkimage -l examples/uImage.TQM850L | 5197 | -> tools/mkimage -l examples/uImage.TQM850L |
5192 | Image Name: 2.4.4 kernel for TQM850L | 5198 | Image Name: 2.4.4 kernel for TQM850L |
5193 | Created: Wed Jul 19 02:34:59 2000 | 5199 | Created: Wed Jul 19 02:34:59 2000 |
5194 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5200 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5195 | Data Size: 335725 Bytes = 327.86 kB = 0.32 MB | 5201 | Data Size: 335725 Bytes = 327.86 kB = 0.32 MB |
5196 | Load Address: 0x00000000 | 5202 | Load Address: 0x00000000 |
5197 | Entry Point: 0x00000000 | 5203 | Entry Point: 0x00000000 |
5198 | 5204 | ||
5199 | NOTE: for embedded systems where boot time is critical you can trade | 5205 | NOTE: for embedded systems where boot time is critical you can trade |
5200 | speed for memory and install an UNCOMPRESSED image instead: this | 5206 | speed for memory and install an UNCOMPRESSED image instead: this |
5201 | needs more space in Flash, but boots much faster since it does not | 5207 | needs more space in Flash, but boots much faster since it does not |
5202 | need to be uncompressed: | 5208 | need to be uncompressed: |
5203 | 5209 | ||
5204 | -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz | 5210 | -> gunzip /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux.gz |
5205 | -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ | 5211 | -> tools/mkimage -n '2.4.4 kernel for TQM850L' \ |
5206 | > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ | 5212 | > -A ppc -O linux -T kernel -C none -a 0 -e 0 \ |
5207 | > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ | 5213 | > -d /opt/elsk/ppc_8xx/usr/src/linux-2.4.4/arch/powerpc/coffboot/vmlinux \ |
5208 | > examples/uImage.TQM850L-uncompressed | 5214 | > examples/uImage.TQM850L-uncompressed |
5209 | Image Name: 2.4.4 kernel for TQM850L | 5215 | Image Name: 2.4.4 kernel for TQM850L |
5210 | Created: Wed Jul 19 02:34:59 2000 | 5216 | Created: Wed Jul 19 02:34:59 2000 |
5211 | Image Type: PowerPC Linux Kernel Image (uncompressed) | 5217 | Image Type: PowerPC Linux Kernel Image (uncompressed) |
5212 | Data Size: 792160 Bytes = 773.59 kB = 0.76 MB | 5218 | Data Size: 792160 Bytes = 773.59 kB = 0.76 MB |
5213 | Load Address: 0x00000000 | 5219 | Load Address: 0x00000000 |
5214 | Entry Point: 0x00000000 | 5220 | Entry Point: 0x00000000 |
5215 | 5221 | ||
5216 | 5222 | ||
5217 | Similar you can build U-Boot images from a 'ramdisk.image.gz' file | 5223 | Similar you can build U-Boot images from a 'ramdisk.image.gz' file |
5218 | when your kernel is intended to use an initial ramdisk: | 5224 | when your kernel is intended to use an initial ramdisk: |
5219 | 5225 | ||
5220 | -> tools/mkimage -n 'Simple Ramdisk Image' \ | 5226 | -> tools/mkimage -n 'Simple Ramdisk Image' \ |
5221 | > -A ppc -O linux -T ramdisk -C gzip \ | 5227 | > -A ppc -O linux -T ramdisk -C gzip \ |
5222 | > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd | 5228 | > -d /LinuxPPC/images/SIMPLE-ramdisk.image.gz examples/simple-initrd |
5223 | Image Name: Simple Ramdisk Image | 5229 | Image Name: Simple Ramdisk Image |
5224 | Created: Wed Jan 12 14:01:50 2000 | 5230 | Created: Wed Jan 12 14:01:50 2000 |
5225 | Image Type: PowerPC Linux RAMDisk Image (gzip compressed) | 5231 | Image Type: PowerPC Linux RAMDisk Image (gzip compressed) |
5226 | Data Size: 566530 Bytes = 553.25 kB = 0.54 MB | 5232 | Data Size: 566530 Bytes = 553.25 kB = 0.54 MB |
5227 | Load Address: 0x00000000 | 5233 | Load Address: 0x00000000 |
5228 | Entry Point: 0x00000000 | 5234 | Entry Point: 0x00000000 |
5229 | 5235 | ||
5230 | 5236 | ||
5231 | Installing a Linux Image: | 5237 | Installing a Linux Image: |
5232 | ------------------------- | 5238 | ------------------------- |
5233 | 5239 | ||
5234 | To downloading a U-Boot image over the serial (console) interface, | 5240 | To downloading a U-Boot image over the serial (console) interface, |
5235 | you must convert the image to S-Record format: | 5241 | you must convert the image to S-Record format: |
5236 | 5242 | ||
5237 | objcopy -I binary -O srec examples/image examples/image.srec | 5243 | objcopy -I binary -O srec examples/image examples/image.srec |
5238 | 5244 | ||
5239 | The 'objcopy' does not understand the information in the U-Boot | 5245 | The 'objcopy' does not understand the information in the U-Boot |
5240 | image header, so the resulting S-Record file will be relative to | 5246 | image header, so the resulting S-Record file will be relative to |
5241 | address 0x00000000. To load it to a given address, you need to | 5247 | address 0x00000000. To load it to a given address, you need to |
5242 | specify the target address as 'offset' parameter with the 'loads' | 5248 | specify the target address as 'offset' parameter with the 'loads' |
5243 | command. | 5249 | command. |
5244 | 5250 | ||
5245 | Example: install the image to address 0x40100000 (which on the | 5251 | Example: install the image to address 0x40100000 (which on the |
5246 | TQM8xxL is in the first Flash bank): | 5252 | TQM8xxL is in the first Flash bank): |
5247 | 5253 | ||
5248 | => erase 40100000 401FFFFF | 5254 | => erase 40100000 401FFFFF |
5249 | 5255 | ||
5250 | .......... done | 5256 | .......... done |
5251 | Erased 8 sectors | 5257 | Erased 8 sectors |
5252 | 5258 | ||
5253 | => loads 40100000 | 5259 | => loads 40100000 |
5254 | ## Ready for S-Record download ... | 5260 | ## Ready for S-Record download ... |
5255 | ~>examples/image.srec | 5261 | ~>examples/image.srec |
5256 | 1 2 3 4 5 6 7 8 9 10 11 12 13 ... | 5262 | 1 2 3 4 5 6 7 8 9 10 11 12 13 ... |
5257 | ... | 5263 | ... |
5258 | 15989 15990 15991 15992 | 5264 | 15989 15990 15991 15992 |
5259 | [file transfer complete] | 5265 | [file transfer complete] |
5260 | [connected] | 5266 | [connected] |
5261 | ## Start Addr = 0x00000000 | 5267 | ## Start Addr = 0x00000000 |
5262 | 5268 | ||
5263 | 5269 | ||
5264 | You can check the success of the download using the 'iminfo' command; | 5270 | You can check the success of the download using the 'iminfo' command; |
5265 | this includes a checksum verification so you can be sure no data | 5271 | this includes a checksum verification so you can be sure no data |
5266 | corruption happened: | 5272 | corruption happened: |
5267 | 5273 | ||
5268 | => imi 40100000 | 5274 | => imi 40100000 |
5269 | 5275 | ||
5270 | ## Checking Image at 40100000 ... | 5276 | ## Checking Image at 40100000 ... |
5271 | Image Name: 2.2.13 for initrd on TQM850L | 5277 | Image Name: 2.2.13 for initrd on TQM850L |
5272 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5278 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5273 | Data Size: 335725 Bytes = 327 kB = 0 MB | 5279 | Data Size: 335725 Bytes = 327 kB = 0 MB |
5274 | Load Address: 00000000 | 5280 | Load Address: 00000000 |
5275 | Entry Point: 0000000c | 5281 | Entry Point: 0000000c |
5276 | Verifying Checksum ... OK | 5282 | Verifying Checksum ... OK |
5277 | 5283 | ||
5278 | 5284 | ||
5279 | Boot Linux: | 5285 | Boot Linux: |
5280 | ----------- | 5286 | ----------- |
5281 | 5287 | ||
5282 | The "bootm" command is used to boot an application that is stored in | 5288 | The "bootm" command is used to boot an application that is stored in |
5283 | memory (RAM or Flash). In case of a Linux kernel image, the contents | 5289 | memory (RAM or Flash). In case of a Linux kernel image, the contents |
5284 | of the "bootargs" environment variable is passed to the kernel as | 5290 | of the "bootargs" environment variable is passed to the kernel as |
5285 | parameters. You can check and modify this variable using the | 5291 | parameters. You can check and modify this variable using the |
5286 | "printenv" and "setenv" commands: | 5292 | "printenv" and "setenv" commands: |
5287 | 5293 | ||
5288 | 5294 | ||
5289 | => printenv bootargs | 5295 | => printenv bootargs |
5290 | bootargs=root=/dev/ram | 5296 | bootargs=root=/dev/ram |
5291 | 5297 | ||
5292 | => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 | 5298 | => setenv bootargs root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 |
5293 | 5299 | ||
5294 | => printenv bootargs | 5300 | => printenv bootargs |
5295 | bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 | 5301 | bootargs=root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 |
5296 | 5302 | ||
5297 | => bootm 40020000 | 5303 | => bootm 40020000 |
5298 | ## Booting Linux kernel at 40020000 ... | 5304 | ## Booting Linux kernel at 40020000 ... |
5299 | Image Name: 2.2.13 for NFS on TQM850L | 5305 | Image Name: 2.2.13 for NFS on TQM850L |
5300 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5306 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5301 | Data Size: 381681 Bytes = 372 kB = 0 MB | 5307 | Data Size: 381681 Bytes = 372 kB = 0 MB |
5302 | Load Address: 00000000 | 5308 | Load Address: 00000000 |
5303 | Entry Point: 0000000c | 5309 | Entry Point: 0000000c |
5304 | Verifying Checksum ... OK | 5310 | Verifying Checksum ... OK |
5305 | Uncompressing Kernel Image ... OK | 5311 | Uncompressing Kernel Image ... OK |
5306 | Linux version 2.2.13 (wd@denx.local.net) (gcc version 2.95.2 19991024 (release)) #1 Wed Jul 19 02:35:17 MEST 2000 | 5312 | Linux version 2.2.13 (wd@denx.local.net) (gcc version 2.95.2 19991024 (release)) #1 Wed Jul 19 02:35:17 MEST 2000 |
5307 | Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 | 5313 | Boot arguments: root=/dev/nfs rw nfsroot=10.0.0.2:/LinuxPPC nfsaddrs=10.0.0.99:10.0.0.2 |
5308 | time_init: decrementer frequency = 187500000/60 | 5314 | time_init: decrementer frequency = 187500000/60 |
5309 | Calibrating delay loop... 49.77 BogoMIPS | 5315 | Calibrating delay loop... 49.77 BogoMIPS |
5310 | Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] | 5316 | Memory: 15208k available (700k kernel code, 444k data, 32k init) [c0000000,c1000000] |
5311 | ... | 5317 | ... |
5312 | 5318 | ||
5313 | If you want to boot a Linux kernel with initial RAM disk, you pass | 5319 | If you want to boot a Linux kernel with initial RAM disk, you pass |
5314 | the memory addresses of both the kernel and the initrd image (PPBCOOT | 5320 | the memory addresses of both the kernel and the initrd image (PPBCOOT |
5315 | format!) to the "bootm" command: | 5321 | format!) to the "bootm" command: |
5316 | 5322 | ||
5317 | => imi 40100000 40200000 | 5323 | => imi 40100000 40200000 |
5318 | 5324 | ||
5319 | ## Checking Image at 40100000 ... | 5325 | ## Checking Image at 40100000 ... |
5320 | Image Name: 2.2.13 for initrd on TQM850L | 5326 | Image Name: 2.2.13 for initrd on TQM850L |
5321 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5327 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5322 | Data Size: 335725 Bytes = 327 kB = 0 MB | 5328 | Data Size: 335725 Bytes = 327 kB = 0 MB |
5323 | Load Address: 00000000 | 5329 | Load Address: 00000000 |
5324 | Entry Point: 0000000c | 5330 | Entry Point: 0000000c |
5325 | Verifying Checksum ... OK | 5331 | Verifying Checksum ... OK |
5326 | 5332 | ||
5327 | ## Checking Image at 40200000 ... | 5333 | ## Checking Image at 40200000 ... |
5328 | Image Name: Simple Ramdisk Image | 5334 | Image Name: Simple Ramdisk Image |
5329 | Image Type: PowerPC Linux RAMDisk Image (gzip compressed) | 5335 | Image Type: PowerPC Linux RAMDisk Image (gzip compressed) |
5330 | Data Size: 566530 Bytes = 553 kB = 0 MB | 5336 | Data Size: 566530 Bytes = 553 kB = 0 MB |
5331 | Load Address: 00000000 | 5337 | Load Address: 00000000 |
5332 | Entry Point: 00000000 | 5338 | Entry Point: 00000000 |
5333 | Verifying Checksum ... OK | 5339 | Verifying Checksum ... OK |
5334 | 5340 | ||
5335 | => bootm 40100000 40200000 | 5341 | => bootm 40100000 40200000 |
5336 | ## Booting Linux kernel at 40100000 ... | 5342 | ## Booting Linux kernel at 40100000 ... |
5337 | Image Name: 2.2.13 for initrd on TQM850L | 5343 | Image Name: 2.2.13 for initrd on TQM850L |
5338 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5344 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5339 | Data Size: 335725 Bytes = 327 kB = 0 MB | 5345 | Data Size: 335725 Bytes = 327 kB = 0 MB |
5340 | Load Address: 00000000 | 5346 | Load Address: 00000000 |
5341 | Entry Point: 0000000c | 5347 | Entry Point: 0000000c |
5342 | Verifying Checksum ... OK | 5348 | Verifying Checksum ... OK |
5343 | Uncompressing Kernel Image ... OK | 5349 | Uncompressing Kernel Image ... OK |
5344 | ## Loading RAMDisk Image at 40200000 ... | 5350 | ## Loading RAMDisk Image at 40200000 ... |
5345 | Image Name: Simple Ramdisk Image | 5351 | Image Name: Simple Ramdisk Image |
5346 | Image Type: PowerPC Linux RAMDisk Image (gzip compressed) | 5352 | Image Type: PowerPC Linux RAMDisk Image (gzip compressed) |
5347 | Data Size: 566530 Bytes = 553 kB = 0 MB | 5353 | Data Size: 566530 Bytes = 553 kB = 0 MB |
5348 | Load Address: 00000000 | 5354 | Load Address: 00000000 |
5349 | Entry Point: 00000000 | 5355 | Entry Point: 00000000 |
5350 | Verifying Checksum ... OK | 5356 | Verifying Checksum ... OK |
5351 | Loading Ramdisk ... OK | 5357 | Loading Ramdisk ... OK |
5352 | Linux version 2.2.13 (wd@denx.local.net) (gcc version 2.95.2 19991024 (release)) #1 Wed Jul 19 02:32:08 MEST 2000 | 5358 | Linux version 2.2.13 (wd@denx.local.net) (gcc version 2.95.2 19991024 (release)) #1 Wed Jul 19 02:32:08 MEST 2000 |
5353 | Boot arguments: root=/dev/ram | 5359 | Boot arguments: root=/dev/ram |
5354 | time_init: decrementer frequency = 187500000/60 | 5360 | time_init: decrementer frequency = 187500000/60 |
5355 | Calibrating delay loop... 49.77 BogoMIPS | 5361 | Calibrating delay loop... 49.77 BogoMIPS |
5356 | ... | 5362 | ... |
5357 | RAMDISK: Compressed image found at block 0 | 5363 | RAMDISK: Compressed image found at block 0 |
5358 | VFS: Mounted root (ext2 filesystem). | 5364 | VFS: Mounted root (ext2 filesystem). |
5359 | 5365 | ||
5360 | bash# | 5366 | bash# |
5361 | 5367 | ||
5362 | Boot Linux and pass a flat device tree: | 5368 | Boot Linux and pass a flat device tree: |
5363 | ----------- | 5369 | ----------- |
5364 | 5370 | ||
5365 | First, U-Boot must be compiled with the appropriate defines. See the section | 5371 | First, U-Boot must be compiled with the appropriate defines. See the section |
5366 | titled "Linux Kernel Interface" above for a more in depth explanation. The | 5372 | titled "Linux Kernel Interface" above for a more in depth explanation. The |
5367 | following is an example of how to start a kernel and pass an updated | 5373 | following is an example of how to start a kernel and pass an updated |
5368 | flat device tree: | 5374 | flat device tree: |
5369 | 5375 | ||
5370 | => print oftaddr | 5376 | => print oftaddr |
5371 | oftaddr=0x300000 | 5377 | oftaddr=0x300000 |
5372 | => print oft | 5378 | => print oft |
5373 | oft=oftrees/mpc8540ads.dtb | 5379 | oft=oftrees/mpc8540ads.dtb |
5374 | => tftp $oftaddr $oft | 5380 | => tftp $oftaddr $oft |
5375 | Speed: 1000, full duplex | 5381 | Speed: 1000, full duplex |
5376 | Using TSEC0 device | 5382 | Using TSEC0 device |
5377 | TFTP from server 192.168.1.1; our IP address is 192.168.1.101 | 5383 | TFTP from server 192.168.1.1; our IP address is 192.168.1.101 |
5378 | Filename 'oftrees/mpc8540ads.dtb'. | 5384 | Filename 'oftrees/mpc8540ads.dtb'. |
5379 | Load address: 0x300000 | 5385 | Load address: 0x300000 |
5380 | Loading: # | 5386 | Loading: # |
5381 | done | 5387 | done |
5382 | Bytes transferred = 4106 (100a hex) | 5388 | Bytes transferred = 4106 (100a hex) |
5383 | => tftp $loadaddr $bootfile | 5389 | => tftp $loadaddr $bootfile |
5384 | Speed: 1000, full duplex | 5390 | Speed: 1000, full duplex |
5385 | Using TSEC0 device | 5391 | Using TSEC0 device |
5386 | TFTP from server 192.168.1.1; our IP address is 192.168.1.2 | 5392 | TFTP from server 192.168.1.1; our IP address is 192.168.1.2 |
5387 | Filename 'uImage'. | 5393 | Filename 'uImage'. |
5388 | Load address: 0x200000 | 5394 | Load address: 0x200000 |
5389 | Loading:############ | 5395 | Loading:############ |
5390 | done | 5396 | done |
5391 | Bytes transferred = 1029407 (fb51f hex) | 5397 | Bytes transferred = 1029407 (fb51f hex) |
5392 | => print loadaddr | 5398 | => print loadaddr |
5393 | loadaddr=200000 | 5399 | loadaddr=200000 |
5394 | => print oftaddr | 5400 | => print oftaddr |
5395 | oftaddr=0x300000 | 5401 | oftaddr=0x300000 |
5396 | => bootm $loadaddr - $oftaddr | 5402 | => bootm $loadaddr - $oftaddr |
5397 | ## Booting image at 00200000 ... | 5403 | ## Booting image at 00200000 ... |
5398 | Image Name: Linux-2.6.17-dirty | 5404 | Image Name: Linux-2.6.17-dirty |
5399 | Image Type: PowerPC Linux Kernel Image (gzip compressed) | 5405 | Image Type: PowerPC Linux Kernel Image (gzip compressed) |
5400 | Data Size: 1029343 Bytes = 1005.2 kB | 5406 | Data Size: 1029343 Bytes = 1005.2 kB |
5401 | Load Address: 00000000 | 5407 | Load Address: 00000000 |
5402 | Entry Point: 00000000 | 5408 | Entry Point: 00000000 |
5403 | Verifying Checksum ... OK | 5409 | Verifying Checksum ... OK |
5404 | Uncompressing Kernel Image ... OK | 5410 | Uncompressing Kernel Image ... OK |
5405 | Booting using flat device tree at 0x300000 | 5411 | Booting using flat device tree at 0x300000 |
5406 | Using MPC85xx ADS machine description | 5412 | Using MPC85xx ADS machine description |
5407 | Memory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb | 5413 | Memory CAM mapping: CAM0=256Mb, CAM1=256Mb, CAM2=0Mb residual: 0Mb |
5408 | [snip] | 5414 | [snip] |
5409 | 5415 | ||
5410 | 5416 | ||
5411 | More About U-Boot Image Types: | 5417 | More About U-Boot Image Types: |
5412 | ------------------------------ | 5418 | ------------------------------ |
5413 | 5419 | ||
5414 | U-Boot supports the following image types: | 5420 | U-Boot supports the following image types: |
5415 | 5421 | ||
5416 | "Standalone Programs" are directly runnable in the environment | 5422 | "Standalone Programs" are directly runnable in the environment |
5417 | provided by U-Boot; it is expected that (if they behave | 5423 | provided by U-Boot; it is expected that (if they behave |
5418 | well) you can continue to work in U-Boot after return from | 5424 | well) you can continue to work in U-Boot after return from |
5419 | the Standalone Program. | 5425 | the Standalone Program. |
5420 | "OS Kernel Images" are usually images of some Embedded OS which | 5426 | "OS Kernel Images" are usually images of some Embedded OS which |
5421 | will take over control completely. Usually these programs | 5427 | will take over control completely. Usually these programs |
5422 | will install their own set of exception handlers, device | 5428 | will install their own set of exception handlers, device |
5423 | drivers, set up the MMU, etc. - this means, that you cannot | 5429 | drivers, set up the MMU, etc. - this means, that you cannot |
5424 | expect to re-enter U-Boot except by resetting the CPU. | 5430 | expect to re-enter U-Boot except by resetting the CPU. |
5425 | "RAMDisk Images" are more or less just data blocks, and their | 5431 | "RAMDisk Images" are more or less just data blocks, and their |
5426 | parameters (address, size) are passed to an OS kernel that is | 5432 | parameters (address, size) are passed to an OS kernel that is |
5427 | being started. | 5433 | being started. |
5428 | "Multi-File Images" contain several images, typically an OS | 5434 | "Multi-File Images" contain several images, typically an OS |
5429 | (Linux) kernel image and one or more data images like | 5435 | (Linux) kernel image and one or more data images like |
5430 | RAMDisks. This construct is useful for instance when you want | 5436 | RAMDisks. This construct is useful for instance when you want |
5431 | to boot over the network using BOOTP etc., where the boot | 5437 | to boot over the network using BOOTP etc., where the boot |
5432 | server provides just a single image file, but you want to get | 5438 | server provides just a single image file, but you want to get |
5433 | for instance an OS kernel and a RAMDisk image. | 5439 | for instance an OS kernel and a RAMDisk image. |
5434 | 5440 | ||
5435 | "Multi-File Images" start with a list of image sizes, each | 5441 | "Multi-File Images" start with a list of image sizes, each |
5436 | image size (in bytes) specified by an "uint32_t" in network | 5442 | image size (in bytes) specified by an "uint32_t" in network |
5437 | byte order. This list is terminated by an "(uint32_t)0". | 5443 | byte order. This list is terminated by an "(uint32_t)0". |
5438 | Immediately after the terminating 0 follow the images, one by | 5444 | Immediately after the terminating 0 follow the images, one by |
5439 | one, all aligned on "uint32_t" boundaries (size rounded up to | 5445 | one, all aligned on "uint32_t" boundaries (size rounded up to |
5440 | a multiple of 4 bytes). | 5446 | a multiple of 4 bytes). |
5441 | 5447 | ||
5442 | "Firmware Images" are binary images containing firmware (like | 5448 | "Firmware Images" are binary images containing firmware (like |
5443 | U-Boot or FPGA images) which usually will be programmed to | 5449 | U-Boot or FPGA images) which usually will be programmed to |
5444 | flash memory. | 5450 | flash memory. |
5445 | 5451 | ||
5446 | "Script files" are command sequences that will be executed by | 5452 | "Script files" are command sequences that will be executed by |
5447 | U-Boot's command interpreter; this feature is especially | 5453 | U-Boot's command interpreter; this feature is especially |
5448 | useful when you configure U-Boot to use a real shell (hush) | 5454 | useful when you configure U-Boot to use a real shell (hush) |
5449 | as command interpreter. | 5455 | as command interpreter. |
5450 | 5456 | ||
5451 | Booting the Linux zImage: | 5457 | Booting the Linux zImage: |
5452 | ------------------------- | 5458 | ------------------------- |
5453 | 5459 | ||
5454 | On some platforms, it's possible to boot Linux zImage. This is done | 5460 | On some platforms, it's possible to boot Linux zImage. This is done |
5455 | using the "bootz" command. The syntax of "bootz" command is the same | 5461 | using the "bootz" command. The syntax of "bootz" command is the same |
5456 | as the syntax of "bootm" command. | 5462 | as the syntax of "bootm" command. |
5457 | 5463 | ||
5458 | Note, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply | 5464 | Note, defining the CONFIG_SUPPORT_RAW_INITRD allows user to supply |
5459 | kernel with raw initrd images. The syntax is slightly different, the | 5465 | kernel with raw initrd images. The syntax is slightly different, the |
5460 | address of the initrd must be augmented by it's size, in the following | 5466 | address of the initrd must be augmented by it's size, in the following |
5461 | format: "<initrd addres>:<initrd size>". | 5467 | format: "<initrd addres>:<initrd size>". |
5462 | 5468 | ||
5463 | 5469 | ||
5464 | Standalone HOWTO: | 5470 | Standalone HOWTO: |
5465 | ================= | 5471 | ================= |
5466 | 5472 | ||
5467 | One of the features of U-Boot is that you can dynamically load and | 5473 | One of the features of U-Boot is that you can dynamically load and |
5468 | run "standalone" applications, which can use some resources of | 5474 | run "standalone" applications, which can use some resources of |
5469 | U-Boot like console I/O functions or interrupt services. | 5475 | U-Boot like console I/O functions or interrupt services. |
5470 | 5476 | ||
5471 | Two simple examples are included with the sources: | 5477 | Two simple examples are included with the sources: |
5472 | 5478 | ||
5473 | "Hello World" Demo: | 5479 | "Hello World" Demo: |
5474 | ------------------- | 5480 | ------------------- |
5475 | 5481 | ||
5476 | 'examples/hello_world.c' contains a small "Hello World" Demo | 5482 | 'examples/hello_world.c' contains a small "Hello World" Demo |
5477 | application; it is automatically compiled when you build U-Boot. | 5483 | application; it is automatically compiled when you build U-Boot. |
5478 | It's configured to run at address 0x00040004, so you can play with it | 5484 | It's configured to run at address 0x00040004, so you can play with it |
5479 | like that: | 5485 | like that: |
5480 | 5486 | ||
5481 | => loads | 5487 | => loads |
5482 | ## Ready for S-Record download ... | 5488 | ## Ready for S-Record download ... |
5483 | ~>examples/hello_world.srec | 5489 | ~>examples/hello_world.srec |
5484 | 1 2 3 4 5 6 7 8 9 10 11 ... | 5490 | 1 2 3 4 5 6 7 8 9 10 11 ... |
5485 | [file transfer complete] | 5491 | [file transfer complete] |
5486 | [connected] | 5492 | [connected] |
5487 | ## Start Addr = 0x00040004 | 5493 | ## Start Addr = 0x00040004 |
5488 | 5494 | ||
5489 | => go 40004 Hello World! This is a test. | 5495 | => go 40004 Hello World! This is a test. |
5490 | ## Starting application at 0x00040004 ... | 5496 | ## Starting application at 0x00040004 ... |
5491 | Hello World | 5497 | Hello World |
5492 | argc = 7 | 5498 | argc = 7 |
5493 | argv[0] = "40004" | 5499 | argv[0] = "40004" |
5494 | argv[1] = "Hello" | 5500 | argv[1] = "Hello" |
5495 | argv[2] = "World!" | 5501 | argv[2] = "World!" |
5496 | argv[3] = "This" | 5502 | argv[3] = "This" |
5497 | argv[4] = "is" | 5503 | argv[4] = "is" |
5498 | argv[5] = "a" | 5504 | argv[5] = "a" |
5499 | argv[6] = "test." | 5505 | argv[6] = "test." |
5500 | argv[7] = "<NULL>" | 5506 | argv[7] = "<NULL>" |
5501 | Hit any key to exit ... | 5507 | Hit any key to exit ... |
5502 | 5508 | ||
5503 | ## Application terminated, rc = 0x0 | 5509 | ## Application terminated, rc = 0x0 |
5504 | 5510 | ||
5505 | Another example, which demonstrates how to register a CPM interrupt | 5511 | Another example, which demonstrates how to register a CPM interrupt |
5506 | handler with the U-Boot code, can be found in 'examples/timer.c'. | 5512 | handler with the U-Boot code, can be found in 'examples/timer.c'. |
5507 | Here, a CPM timer is set up to generate an interrupt every second. | 5513 | Here, a CPM timer is set up to generate an interrupt every second. |
5508 | The interrupt service routine is trivial, just printing a '.' | 5514 | The interrupt service routine is trivial, just printing a '.' |
5509 | character, but this is just a demo program. The application can be | 5515 | character, but this is just a demo program. The application can be |
5510 | controlled by the following keys: | 5516 | controlled by the following keys: |
5511 | 5517 | ||
5512 | ? - print current values og the CPM Timer registers | 5518 | ? - print current values og the CPM Timer registers |
5513 | b - enable interrupts and start timer | 5519 | b - enable interrupts and start timer |
5514 | e - stop timer and disable interrupts | 5520 | e - stop timer and disable interrupts |
5515 | q - quit application | 5521 | q - quit application |
5516 | 5522 | ||
5517 | => loads | 5523 | => loads |
5518 | ## Ready for S-Record download ... | 5524 | ## Ready for S-Record download ... |
5519 | ~>examples/timer.srec | 5525 | ~>examples/timer.srec |
5520 | 1 2 3 4 5 6 7 8 9 10 11 ... | 5526 | 1 2 3 4 5 6 7 8 9 10 11 ... |
5521 | [file transfer complete] | 5527 | [file transfer complete] |
5522 | [connected] | 5528 | [connected] |
5523 | ## Start Addr = 0x00040004 | 5529 | ## Start Addr = 0x00040004 |
5524 | 5530 | ||
5525 | => go 40004 | 5531 | => go 40004 |
5526 | ## Starting application at 0x00040004 ... | 5532 | ## Starting application at 0x00040004 ... |
5527 | TIMERS=0xfff00980 | 5533 | TIMERS=0xfff00980 |
5528 | Using timer 1 | 5534 | Using timer 1 |
5529 | tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 | 5535 | tgcr @ 0xfff00980, tmr @ 0xfff00990, trr @ 0xfff00994, tcr @ 0xfff00998, tcn @ 0xfff0099c, ter @ 0xfff009b0 |
5530 | 5536 | ||
5531 | Hit 'b': | 5537 | Hit 'b': |
5532 | [q, b, e, ?] Set interval 1000000 us | 5538 | [q, b, e, ?] Set interval 1000000 us |
5533 | Enabling timer | 5539 | Enabling timer |
5534 | Hit '?': | 5540 | Hit '?': |
5535 | [q, b, e, ?] ........ | 5541 | [q, b, e, ?] ........ |
5536 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 | 5542 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0xef6, ter=0x0 |
5537 | Hit '?': | 5543 | Hit '?': |
5538 | [q, b, e, ?] . | 5544 | [q, b, e, ?] . |
5539 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 | 5545 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x2ad4, ter=0x0 |
5540 | Hit '?': | 5546 | Hit '?': |
5541 | [q, b, e, ?] . | 5547 | [q, b, e, ?] . |
5542 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 | 5548 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x1efc, ter=0x0 |
5543 | Hit '?': | 5549 | Hit '?': |
5544 | [q, b, e, ?] . | 5550 | [q, b, e, ?] . |
5545 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 | 5551 | tgcr=0x1, tmr=0xff1c, trr=0x3d09, tcr=0x0, tcn=0x169d, ter=0x0 |
5546 | Hit 'e': | 5552 | Hit 'e': |
5547 | [q, b, e, ?] ...Stopping timer | 5553 | [q, b, e, ?] ...Stopping timer |
5548 | Hit 'q': | 5554 | Hit 'q': |
5549 | [q, b, e, ?] ## Application terminated, rc = 0x0 | 5555 | [q, b, e, ?] ## Application terminated, rc = 0x0 |
5550 | 5556 | ||
5551 | 5557 | ||
5552 | Minicom warning: | 5558 | Minicom warning: |
5553 | ================ | 5559 | ================ |
5554 | 5560 | ||
5555 | Over time, many people have reported problems when trying to use the | 5561 | Over time, many people have reported problems when trying to use the |
5556 | "minicom" terminal emulation program for serial download. I (wd) | 5562 | "minicom" terminal emulation program for serial download. I (wd) |
5557 | consider minicom to be broken, and recommend not to use it. Under | 5563 | consider minicom to be broken, and recommend not to use it. Under |
5558 | Unix, I recommend to use C-Kermit for general purpose use (and | 5564 | Unix, I recommend to use C-Kermit for general purpose use (and |
5559 | especially for kermit binary protocol download ("loadb" command), and | 5565 | especially for kermit binary protocol download ("loadb" command), and |
5560 | use "cu" for S-Record download ("loads" command). See | 5566 | use "cu" for S-Record download ("loads" command). See |
5561 | http://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. | 5567 | http://www.denx.de/wiki/view/DULG/SystemSetup#Section_4.3. |
5562 | for help with kermit. | 5568 | for help with kermit. |
5563 | 5569 | ||
5564 | 5570 | ||
5565 | Nevertheless, if you absolutely want to use it try adding this | 5571 | Nevertheless, if you absolutely want to use it try adding this |
5566 | configuration to your "File transfer protocols" section: | 5572 | configuration to your "File transfer protocols" section: |
5567 | 5573 | ||
5568 | Name Program Name U/D FullScr IO-Red. Multi | 5574 | Name Program Name U/D FullScr IO-Red. Multi |
5569 | X kermit /usr/bin/kermit -i -l %l -s Y U Y N N | 5575 | X kermit /usr/bin/kermit -i -l %l -s Y U Y N N |
5570 | Y kermit /usr/bin/kermit -i -l %l -r N D Y N N | 5576 | Y kermit /usr/bin/kermit -i -l %l -r N D Y N N |
5571 | 5577 | ||
5572 | 5578 | ||
5573 | NetBSD Notes: | 5579 | NetBSD Notes: |
5574 | ============= | 5580 | ============= |
5575 | 5581 | ||
5576 | Starting at version 0.9.2, U-Boot supports NetBSD both as host | 5582 | Starting at version 0.9.2, U-Boot supports NetBSD both as host |
5577 | (build U-Boot) and target system (boots NetBSD/mpc8xx). | 5583 | (build U-Boot) and target system (boots NetBSD/mpc8xx). |
5578 | 5584 | ||
5579 | Building requires a cross environment; it is known to work on | 5585 | Building requires a cross environment; it is known to work on |
5580 | NetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also | 5586 | NetBSD/i386 with the cross-powerpc-netbsd-1.3 package (you will also |
5581 | need gmake since the Makefiles are not compatible with BSD make). | 5587 | need gmake since the Makefiles are not compatible with BSD make). |
5582 | Note that the cross-powerpc package does not install include files; | 5588 | Note that the cross-powerpc package does not install include files; |
5583 | attempting to build U-Boot will fail because <machine/ansi.h> is | 5589 | attempting to build U-Boot will fail because <machine/ansi.h> is |
5584 | missing. This file has to be installed and patched manually: | 5590 | missing. This file has to be installed and patched manually: |
5585 | 5591 | ||
5586 | # cd /usr/pkg/cross/powerpc-netbsd/include | 5592 | # cd /usr/pkg/cross/powerpc-netbsd/include |
5587 | # mkdir powerpc | 5593 | # mkdir powerpc |
5588 | # ln -s powerpc machine | 5594 | # ln -s powerpc machine |
5589 | # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h | 5595 | # cp /usr/src/sys/arch/powerpc/include/ansi.h powerpc/ansi.h |
5590 | # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST | 5596 | # ${EDIT} powerpc/ansi.h ## must remove __va_list, _BSD_VA_LIST |
5591 | 5597 | ||
5592 | Native builds *don't* work due to incompatibilities between native | 5598 | Native builds *don't* work due to incompatibilities between native |
5593 | and U-Boot include files. | 5599 | and U-Boot include files. |
5594 | 5600 | ||
5595 | Booting assumes that (the first part of) the image booted is a | 5601 | Booting assumes that (the first part of) the image booted is a |
5596 | stage-2 loader which in turn loads and then invokes the kernel | 5602 | stage-2 loader which in turn loads and then invokes the kernel |
5597 | proper. Loader sources will eventually appear in the NetBSD source | 5603 | proper. Loader sources will eventually appear in the NetBSD source |
5598 | tree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the | 5604 | tree (probably in sys/arc/mpc8xx/stand/u-boot_stage2/); in the |
5599 | meantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz | 5605 | meantime, see ftp://ftp.denx.de/pub/u-boot/ppcboot_stage2.tar.gz |
5600 | 5606 | ||
5601 | 5607 | ||
5602 | Implementation Internals: | 5608 | Implementation Internals: |
5603 | ========================= | 5609 | ========================= |
5604 | 5610 | ||
5605 | The following is not intended to be a complete description of every | 5611 | The following is not intended to be a complete description of every |
5606 | implementation detail. However, it should help to understand the | 5612 | implementation detail. However, it should help to understand the |
5607 | inner workings of U-Boot and make it easier to port it to custom | 5613 | inner workings of U-Boot and make it easier to port it to custom |
5608 | hardware. | 5614 | hardware. |
5609 | 5615 | ||
5610 | 5616 | ||
5611 | Initial Stack, Global Data: | 5617 | Initial Stack, Global Data: |
5612 | --------------------------- | 5618 | --------------------------- |
5613 | 5619 | ||
5614 | The implementation of U-Boot is complicated by the fact that U-Boot | 5620 | The implementation of U-Boot is complicated by the fact that U-Boot |
5615 | starts running out of ROM (flash memory), usually without access to | 5621 | starts running out of ROM (flash memory), usually without access to |
5616 | system RAM (because the memory controller is not initialized yet). | 5622 | system RAM (because the memory controller is not initialized yet). |
5617 | This means that we don't have writable Data or BSS segments, and BSS | 5623 | This means that we don't have writable Data or BSS segments, and BSS |
5618 | is not initialized as zero. To be able to get a C environment working | 5624 | is not initialized as zero. To be able to get a C environment working |
5619 | at all, we have to allocate at least a minimal stack. Implementation | 5625 | at all, we have to allocate at least a minimal stack. Implementation |
5620 | options for this are defined and restricted by the CPU used: Some CPU | 5626 | options for this are defined and restricted by the CPU used: Some CPU |
5621 | models provide on-chip memory (like the IMMR area on MPC8xx and | 5627 | models provide on-chip memory (like the IMMR area on MPC8xx and |
5622 | MPC826x processors), on others (parts of) the data cache can be | 5628 | MPC826x processors), on others (parts of) the data cache can be |
5623 | locked as (mis-) used as memory, etc. | 5629 | locked as (mis-) used as memory, etc. |
5624 | 5630 | ||
5625 | Chris Hallinan posted a good summary of these issues to the | 5631 | Chris Hallinan posted a good summary of these issues to the |
5626 | U-Boot mailing list: | 5632 | U-Boot mailing list: |
5627 | 5633 | ||
5628 | Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? | 5634 | Subject: RE: [U-Boot-Users] RE: More On Memory Bank x (nothingness)? |
5629 | From: "Chris Hallinan" <clh@net1plus.com> | 5635 | From: "Chris Hallinan" <clh@net1plus.com> |
5630 | Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) | 5636 | Date: Mon, 10 Feb 2003 16:43:46 -0500 (22:43 MET) |
5631 | ... | 5637 | ... |
5632 | 5638 | ||
5633 | Correct me if I'm wrong, folks, but the way I understand it | 5639 | Correct me if I'm wrong, folks, but the way I understand it |
5634 | is this: Using DCACHE as initial RAM for Stack, etc, does not | 5640 | is this: Using DCACHE as initial RAM for Stack, etc, does not |
5635 | require any physical RAM backing up the cache. The cleverness | 5641 | require any physical RAM backing up the cache. The cleverness |
5636 | is that the cache is being used as a temporary supply of | 5642 | is that the cache is being used as a temporary supply of |
5637 | necessary storage before the SDRAM controller is setup. It's | 5643 | necessary storage before the SDRAM controller is setup. It's |
5638 | beyond the scope of this list to explain the details, but you | 5644 | beyond the scope of this list to explain the details, but you |
5639 | can see how this works by studying the cache architecture and | 5645 | can see how this works by studying the cache architecture and |
5640 | operation in the architecture and processor-specific manuals. | 5646 | operation in the architecture and processor-specific manuals. |
5641 | 5647 | ||
5642 | OCM is On Chip Memory, which I believe the 405GP has 4K. It | 5648 | OCM is On Chip Memory, which I believe the 405GP has 4K. It |
5643 | is another option for the system designer to use as an | 5649 | is another option for the system designer to use as an |
5644 | initial stack/RAM area prior to SDRAM being available. Either | 5650 | initial stack/RAM area prior to SDRAM being available. Either |
5645 | option should work for you. Using CS 4 should be fine if your | 5651 | option should work for you. Using CS 4 should be fine if your |
5646 | board designers haven't used it for something that would | 5652 | board designers haven't used it for something that would |
5647 | cause you grief during the initial boot! It is frequently not | 5653 | cause you grief during the initial boot! It is frequently not |
5648 | used. | 5654 | used. |
5649 | 5655 | ||
5650 | CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere | 5656 | CONFIG_SYS_INIT_RAM_ADDR should be somewhere that won't interfere |
5651 | with your processor/board/system design. The default value | 5657 | with your processor/board/system design. The default value |
5652 | you will find in any recent u-boot distribution in | 5658 | you will find in any recent u-boot distribution in |
5653 | walnut.h should work for you. I'd set it to a value larger | 5659 | walnut.h should work for you. I'd set it to a value larger |
5654 | than your SDRAM module. If you have a 64MB SDRAM module, set | 5660 | than your SDRAM module. If you have a 64MB SDRAM module, set |
5655 | it above 400_0000. Just make sure your board has no resources | 5661 | it above 400_0000. Just make sure your board has no resources |
5656 | that are supposed to respond to that address! That code in | 5662 | that are supposed to respond to that address! That code in |
5657 | start.S has been around a while and should work as is when | 5663 | start.S has been around a while and should work as is when |
5658 | you get the config right. | 5664 | you get the config right. |
5659 | 5665 | ||
5660 | -Chris Hallinan | 5666 | -Chris Hallinan |
5661 | DS4.COM, Inc. | 5667 | DS4.COM, Inc. |
5662 | 5668 | ||
5663 | It is essential to remember this, since it has some impact on the C | 5669 | It is essential to remember this, since it has some impact on the C |
5664 | code for the initialization procedures: | 5670 | code for the initialization procedures: |
5665 | 5671 | ||
5666 | * Initialized global data (data segment) is read-only. Do not attempt | 5672 | * Initialized global data (data segment) is read-only. Do not attempt |
5667 | to write it. | 5673 | to write it. |
5668 | 5674 | ||
5669 | * Do not use any uninitialized global data (or implicitely initialized | 5675 | * Do not use any uninitialized global data (or implicitely initialized |
5670 | as zero data - BSS segment) at all - this is undefined, initiali- | 5676 | as zero data - BSS segment) at all - this is undefined, initiali- |
5671 | zation is performed later (when relocating to RAM). | 5677 | zation is performed later (when relocating to RAM). |
5672 | 5678 | ||
5673 | * Stack space is very limited. Avoid big data buffers or things like | 5679 | * Stack space is very limited. Avoid big data buffers or things like |
5674 | that. | 5680 | that. |
5675 | 5681 | ||
5676 | Having only the stack as writable memory limits means we cannot use | 5682 | Having only the stack as writable memory limits means we cannot use |
5677 | normal global data to share information beween the code. But it | 5683 | normal global data to share information beween the code. But it |
5678 | turned out that the implementation of U-Boot can be greatly | 5684 | turned out that the implementation of U-Boot can be greatly |
5679 | simplified by making a global data structure (gd_t) available to all | 5685 | simplified by making a global data structure (gd_t) available to all |
5680 | functions. We could pass a pointer to this data as argument to _all_ | 5686 | functions. We could pass a pointer to this data as argument to _all_ |
5681 | functions, but this would bloat the code. Instead we use a feature of | 5687 | functions, but this would bloat the code. Instead we use a feature of |
5682 | the GCC compiler (Global Register Variables) to share the data: we | 5688 | the GCC compiler (Global Register Variables) to share the data: we |
5683 | place a pointer (gd) to the global data into a register which we | 5689 | place a pointer (gd) to the global data into a register which we |
5684 | reserve for this purpose. | 5690 | reserve for this purpose. |
5685 | 5691 | ||
5686 | When choosing a register for such a purpose we are restricted by the | 5692 | When choosing a register for such a purpose we are restricted by the |
5687 | relevant (E)ABI specifications for the current architecture, and by | 5693 | relevant (E)ABI specifications for the current architecture, and by |
5688 | GCC's implementation. | 5694 | GCC's implementation. |
5689 | 5695 | ||
5690 | For PowerPC, the following registers have specific use: | 5696 | For PowerPC, the following registers have specific use: |
5691 | R1: stack pointer | 5697 | R1: stack pointer |
5692 | R2: reserved for system use | 5698 | R2: reserved for system use |
5693 | R3-R4: parameter passing and return values | 5699 | R3-R4: parameter passing and return values |
5694 | R5-R10: parameter passing | 5700 | R5-R10: parameter passing |
5695 | R13: small data area pointer | 5701 | R13: small data area pointer |
5696 | R30: GOT pointer | 5702 | R30: GOT pointer |
5697 | R31: frame pointer | 5703 | R31: frame pointer |
5698 | 5704 | ||
5699 | (U-Boot also uses R12 as internal GOT pointer. r12 | 5705 | (U-Boot also uses R12 as internal GOT pointer. r12 |
5700 | is a volatile register so r12 needs to be reset when | 5706 | is a volatile register so r12 needs to be reset when |
5701 | going back and forth between asm and C) | 5707 | going back and forth between asm and C) |
5702 | 5708 | ||
5703 | ==> U-Boot will use R2 to hold a pointer to the global data | 5709 | ==> U-Boot will use R2 to hold a pointer to the global data |
5704 | 5710 | ||
5705 | Note: on PPC, we could use a static initializer (since the | 5711 | Note: on PPC, we could use a static initializer (since the |
5706 | address of the global data structure is known at compile time), | 5712 | address of the global data structure is known at compile time), |
5707 | but it turned out that reserving a register results in somewhat | 5713 | but it turned out that reserving a register results in somewhat |
5708 | smaller code - although the code savings are not that big (on | 5714 | smaller code - although the code savings are not that big (on |
5709 | average for all boards 752 bytes for the whole U-Boot image, | 5715 | average for all boards 752 bytes for the whole U-Boot image, |
5710 | 624 text + 127 data). | 5716 | 624 text + 127 data). |
5711 | 5717 | ||
5712 | On Blackfin, the normal C ABI (except for P3) is followed as documented here: | 5718 | On Blackfin, the normal C ABI (except for P3) is followed as documented here: |
5713 | http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface | 5719 | http://docs.blackfin.uclinux.org/doku.php?id=application_binary_interface |
5714 | 5720 | ||
5715 | ==> U-Boot will use P3 to hold a pointer to the global data | 5721 | ==> U-Boot will use P3 to hold a pointer to the global data |
5716 | 5722 | ||
5717 | On ARM, the following registers are used: | 5723 | On ARM, the following registers are used: |
5718 | 5724 | ||
5719 | R0: function argument word/integer result | 5725 | R0: function argument word/integer result |
5720 | R1-R3: function argument word | 5726 | R1-R3: function argument word |
5721 | R9: platform specific | 5727 | R9: platform specific |
5722 | R10: stack limit (used only if stack checking is enabled) | 5728 | R10: stack limit (used only if stack checking is enabled) |
5723 | R11: argument (frame) pointer | 5729 | R11: argument (frame) pointer |
5724 | R12: temporary workspace | 5730 | R12: temporary workspace |
5725 | R13: stack pointer | 5731 | R13: stack pointer |
5726 | R14: link register | 5732 | R14: link register |
5727 | R15: program counter | 5733 | R15: program counter |
5728 | 5734 | ||
5729 | ==> U-Boot will use R9 to hold a pointer to the global data | 5735 | ==> U-Boot will use R9 to hold a pointer to the global data |
5730 | 5736 | ||
5731 | Note: on ARM, only R_ARM_RELATIVE relocations are supported. | 5737 | Note: on ARM, only R_ARM_RELATIVE relocations are supported. |
5732 | 5738 | ||
5733 | On Nios II, the ABI is documented here: | 5739 | On Nios II, the ABI is documented here: |
5734 | http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf | 5740 | http://www.altera.com/literature/hb/nios2/n2cpu_nii51016.pdf |
5735 | 5741 | ||
5736 | ==> U-Boot will use gp to hold a pointer to the global data | 5742 | ==> U-Boot will use gp to hold a pointer to the global data |
5737 | 5743 | ||
5738 | Note: on Nios II, we give "-G0" option to gcc and don't use gp | 5744 | Note: on Nios II, we give "-G0" option to gcc and don't use gp |
5739 | to access small data sections, so gp is free. | 5745 | to access small data sections, so gp is free. |
5740 | 5746 | ||
5741 | On NDS32, the following registers are used: | 5747 | On NDS32, the following registers are used: |
5742 | 5748 | ||
5743 | R0-R1: argument/return | 5749 | R0-R1: argument/return |
5744 | R2-R5: argument | 5750 | R2-R5: argument |
5745 | R15: temporary register for assembler | 5751 | R15: temporary register for assembler |
5746 | R16: trampoline register | 5752 | R16: trampoline register |
5747 | R28: frame pointer (FP) | 5753 | R28: frame pointer (FP) |
5748 | R29: global pointer (GP) | 5754 | R29: global pointer (GP) |
5749 | R30: link register (LP) | 5755 | R30: link register (LP) |
5750 | R31: stack pointer (SP) | 5756 | R31: stack pointer (SP) |
5751 | PC: program counter (PC) | 5757 | PC: program counter (PC) |
5752 | 5758 | ||
5753 | ==> U-Boot will use R10 to hold a pointer to the global data | 5759 | ==> U-Boot will use R10 to hold a pointer to the global data |
5754 | 5760 | ||
5755 | NOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, | 5761 | NOTE: DECLARE_GLOBAL_DATA_PTR must be used with file-global scope, |
5756 | or current versions of GCC may "optimize" the code too much. | 5762 | or current versions of GCC may "optimize" the code too much. |
5757 | 5763 | ||
5758 | Memory Management: | 5764 | Memory Management: |
5759 | ------------------ | 5765 | ------------------ |
5760 | 5766 | ||
5761 | U-Boot runs in system state and uses physical addresses, i.e. the | 5767 | U-Boot runs in system state and uses physical addresses, i.e. the |
5762 | MMU is not used either for address mapping nor for memory protection. | 5768 | MMU is not used either for address mapping nor for memory protection. |
5763 | 5769 | ||
5764 | The available memory is mapped to fixed addresses using the memory | 5770 | The available memory is mapped to fixed addresses using the memory |
5765 | controller. In this process, a contiguous block is formed for each | 5771 | controller. In this process, a contiguous block is formed for each |
5766 | memory type (Flash, SDRAM, SRAM), even when it consists of several | 5772 | memory type (Flash, SDRAM, SRAM), even when it consists of several |
5767 | physical memory banks. | 5773 | physical memory banks. |
5768 | 5774 | ||
5769 | U-Boot is installed in the first 128 kB of the first Flash bank (on | 5775 | U-Boot is installed in the first 128 kB of the first Flash bank (on |
5770 | TQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After | 5776 | TQM8xxL modules this is the range 0x40000000 ... 0x4001FFFF). After |
5771 | booting and sizing and initializing DRAM, the code relocates itself | 5777 | booting and sizing and initializing DRAM, the code relocates itself |
5772 | to the upper end of DRAM. Immediately below the U-Boot code some | 5778 | to the upper end of DRAM. Immediately below the U-Boot code some |
5773 | memory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN | 5779 | memory is reserved for use by malloc() [see CONFIG_SYS_MALLOC_LEN |
5774 | configuration setting]. Below that, a structure with global Board | 5780 | configuration setting]. Below that, a structure with global Board |
5775 | Info data is placed, followed by the stack (growing downward). | 5781 | Info data is placed, followed by the stack (growing downward). |
5776 | 5782 | ||
5777 | Additionally, some exception handler code is copied to the low 8 kB | 5783 | Additionally, some exception handler code is copied to the low 8 kB |
5778 | of DRAM (0x00000000 ... 0x00001FFF). | 5784 | of DRAM (0x00000000 ... 0x00001FFF). |
5779 | 5785 | ||
5780 | So a typical memory configuration with 16 MB of DRAM could look like | 5786 | So a typical memory configuration with 16 MB of DRAM could look like |
5781 | this: | 5787 | this: |
5782 | 5788 | ||
5783 | 0x0000 0000 Exception Vector code | 5789 | 0x0000 0000 Exception Vector code |
5784 | : | 5790 | : |
5785 | 0x0000 1FFF | 5791 | 0x0000 1FFF |
5786 | 0x0000 2000 Free for Application Use | 5792 | 0x0000 2000 Free for Application Use |
5787 | : | 5793 | : |
5788 | : | 5794 | : |
5789 | 5795 | ||
5790 | : | 5796 | : |
5791 | : | 5797 | : |
5792 | 0x00FB FF20 Monitor Stack (Growing downward) | 5798 | 0x00FB FF20 Monitor Stack (Growing downward) |
5793 | 0x00FB FFAC Board Info Data and permanent copy of global data | 5799 | 0x00FB FFAC Board Info Data and permanent copy of global data |
5794 | 0x00FC 0000 Malloc Arena | 5800 | 0x00FC 0000 Malloc Arena |
5795 | : | 5801 | : |
5796 | 0x00FD FFFF | 5802 | 0x00FD FFFF |
5797 | 0x00FE 0000 RAM Copy of Monitor Code | 5803 | 0x00FE 0000 RAM Copy of Monitor Code |
5798 | ... eventually: LCD or video framebuffer | 5804 | ... eventually: LCD or video framebuffer |
5799 | ... eventually: pRAM (Protected RAM - unchanged by reset) | 5805 | ... eventually: pRAM (Protected RAM - unchanged by reset) |
5800 | 0x00FF FFFF [End of RAM] | 5806 | 0x00FF FFFF [End of RAM] |
5801 | 5807 | ||
5802 | 5808 | ||
5803 | System Initialization: | 5809 | System Initialization: |
5804 | ---------------------- | 5810 | ---------------------- |
5805 | 5811 | ||
5806 | In the reset configuration, U-Boot starts at the reset entry point | 5812 | In the reset configuration, U-Boot starts at the reset entry point |
5807 | (on most PowerPC systems at address 0x00000100). Because of the reset | 5813 | (on most PowerPC systems at address 0x00000100). Because of the reset |
5808 | configuration for CS0# this is a mirror of the onboard Flash memory. | 5814 | configuration for CS0# this is a mirror of the onboard Flash memory. |
5809 | To be able to re-map memory U-Boot then jumps to its link address. | 5815 | To be able to re-map memory U-Boot then jumps to its link address. |
5810 | To be able to implement the initialization code in C, a (small!) | 5816 | To be able to implement the initialization code in C, a (small!) |
5811 | initial stack is set up in the internal Dual Ported RAM (in case CPUs | 5817 | initial stack is set up in the internal Dual Ported RAM (in case CPUs |
5812 | which provide such a feature like MPC8xx or MPC8260), or in a locked | 5818 | which provide such a feature like MPC8xx or MPC8260), or in a locked |
5813 | part of the data cache. After that, U-Boot initializes the CPU core, | 5819 | part of the data cache. After that, U-Boot initializes the CPU core, |
5814 | the caches and the SIU. | 5820 | the caches and the SIU. |
5815 | 5821 | ||
5816 | Next, all (potentially) available memory banks are mapped using a | 5822 | Next, all (potentially) available memory banks are mapped using a |
5817 | preliminary mapping. For example, we put them on 512 MB boundaries | 5823 | preliminary mapping. For example, we put them on 512 MB boundaries |
5818 | (multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash | 5824 | (multiples of 0x20000000: SDRAM on 0x00000000 and 0x20000000, Flash |
5819 | on 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is | 5825 | on 0x40000000 and 0x60000000, SRAM on 0x80000000). Then UPM A is |
5820 | programmed for SDRAM access. Using the temporary configuration, a | 5826 | programmed for SDRAM access. Using the temporary configuration, a |
5821 | simple memory test is run that determines the size of the SDRAM | 5827 | simple memory test is run that determines the size of the SDRAM |
5822 | banks. | 5828 | banks. |
5823 | 5829 | ||
5824 | When there is more than one SDRAM bank, and the banks are of | 5830 | When there is more than one SDRAM bank, and the banks are of |
5825 | different size, the largest is mapped first. For equal size, the first | 5831 | different size, the largest is mapped first. For equal size, the first |
5826 | bank (CS2#) is mapped first. The first mapping is always for address | 5832 | bank (CS2#) is mapped first. The first mapping is always for address |
5827 | 0x00000000, with any additional banks following immediately to create | 5833 | 0x00000000, with any additional banks following immediately to create |
5828 | contiguous memory starting from 0. | 5834 | contiguous memory starting from 0. |
5829 | 5835 | ||
5830 | Then, the monitor installs itself at the upper end of the SDRAM area | 5836 | Then, the monitor installs itself at the upper end of the SDRAM area |
5831 | and allocates memory for use by malloc() and for the global Board | 5837 | and allocates memory for use by malloc() and for the global Board |
5832 | Info data; also, the exception vector code is copied to the low RAM | 5838 | Info data; also, the exception vector code is copied to the low RAM |
5833 | pages, and the final stack is set up. | 5839 | pages, and the final stack is set up. |
5834 | 5840 | ||
5835 | Only after this relocation will you have a "normal" C environment; | 5841 | Only after this relocation will you have a "normal" C environment; |
5836 | until that you are restricted in several ways, mostly because you are | 5842 | until that you are restricted in several ways, mostly because you are |
5837 | running from ROM, and because the code will have to be relocated to a | 5843 | running from ROM, and because the code will have to be relocated to a |
5838 | new address in RAM. | 5844 | new address in RAM. |
5839 | 5845 | ||
5840 | 5846 | ||
5841 | U-Boot Porting Guide: | 5847 | U-Boot Porting Guide: |
5842 | ---------------------- | 5848 | ---------------------- |
5843 | 5849 | ||
5844 | [Based on messages by Jerry Van Baren in the U-Boot-Users mailing | 5850 | [Based on messages by Jerry Van Baren in the U-Boot-Users mailing |
5845 | list, October 2002] | 5851 | list, October 2002] |
5846 | 5852 | ||
5847 | 5853 | ||
5848 | int main(int argc, char *argv[]) | 5854 | int main(int argc, char *argv[]) |
5849 | { | 5855 | { |
5850 | sighandler_t no_more_time; | 5856 | sighandler_t no_more_time; |
5851 | 5857 | ||
5852 | signal(SIGALRM, no_more_time); | 5858 | signal(SIGALRM, no_more_time); |
5853 | alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); | 5859 | alarm(PROJECT_DEADLINE - toSec (3 * WEEK)); |
5854 | 5860 | ||
5855 | if (available_money > available_manpower) { | 5861 | if (available_money > available_manpower) { |
5856 | Pay consultant to port U-Boot; | 5862 | Pay consultant to port U-Boot; |
5857 | return 0; | 5863 | return 0; |
5858 | } | 5864 | } |
5859 | 5865 | ||
5860 | Download latest U-Boot source; | 5866 | Download latest U-Boot source; |
5861 | 5867 | ||
5862 | Subscribe to u-boot mailing list; | 5868 | Subscribe to u-boot mailing list; |
5863 | 5869 | ||
5864 | if (clueless) | 5870 | if (clueless) |
5865 | email("Hi, I am new to U-Boot, how do I get started?"); | 5871 | email("Hi, I am new to U-Boot, how do I get started?"); |
5866 | 5872 | ||
5867 | while (learning) { | 5873 | while (learning) { |
5868 | Read the README file in the top level directory; | 5874 | Read the README file in the top level directory; |
5869 | Read http://www.denx.de/twiki/bin/view/DULG/Manual; | 5875 | Read http://www.denx.de/twiki/bin/view/DULG/Manual; |
5870 | Read applicable doc/*.README; | 5876 | Read applicable doc/*.README; |
5871 | Read the source, Luke; | 5877 | Read the source, Luke; |
5872 | /* find . -name "*.[chS]" | xargs grep -i <keyword> */ | 5878 | /* find . -name "*.[chS]" | xargs grep -i <keyword> */ |
5873 | } | 5879 | } |
5874 | 5880 | ||
5875 | if (available_money > toLocalCurrency ($2500)) | 5881 | if (available_money > toLocalCurrency ($2500)) |
5876 | Buy a BDI3000; | 5882 | Buy a BDI3000; |
5877 | else | 5883 | else |
5878 | Add a lot of aggravation and time; | 5884 | Add a lot of aggravation and time; |
5879 | 5885 | ||
5880 | if (a similar board exists) { /* hopefully... */ | 5886 | if (a similar board exists) { /* hopefully... */ |
5881 | cp -a board/<similar> board/<myboard> | 5887 | cp -a board/<similar> board/<myboard> |
5882 | cp include/configs/<similar>.h include/configs/<myboard>.h | 5888 | cp include/configs/<similar>.h include/configs/<myboard>.h |
5883 | } else { | 5889 | } else { |
5884 | Create your own board support subdirectory; | 5890 | Create your own board support subdirectory; |
5885 | Create your own board include/configs/<myboard>.h file; | 5891 | Create your own board include/configs/<myboard>.h file; |
5886 | } | 5892 | } |
5887 | Edit new board/<myboard> files | 5893 | Edit new board/<myboard> files |
5888 | Edit new include/configs/<myboard>.h | 5894 | Edit new include/configs/<myboard>.h |
5889 | 5895 | ||
5890 | while (!accepted) { | 5896 | while (!accepted) { |
5891 | while (!running) { | 5897 | while (!running) { |
5892 | do { | 5898 | do { |
5893 | Add / modify source code; | 5899 | Add / modify source code; |
5894 | } until (compiles); | 5900 | } until (compiles); |
5895 | Debug; | 5901 | Debug; |
5896 | if (clueless) | 5902 | if (clueless) |
5897 | email("Hi, I am having problems..."); | 5903 | email("Hi, I am having problems..."); |
5898 | } | 5904 | } |
5899 | Send patch file to the U-Boot email list; | 5905 | Send patch file to the U-Boot email list; |
5900 | if (reasonable critiques) | 5906 | if (reasonable critiques) |
5901 | Incorporate improvements from email list code review; | 5907 | Incorporate improvements from email list code review; |
5902 | else | 5908 | else |
5903 | Defend code as written; | 5909 | Defend code as written; |
5904 | } | 5910 | } |
5905 | 5911 | ||
5906 | return 0; | 5912 | return 0; |
5907 | } | 5913 | } |
5908 | 5914 | ||
5909 | void no_more_time (int sig) | 5915 | void no_more_time (int sig) |
5910 | { | 5916 | { |
5911 | hire_a_guru(); | 5917 | hire_a_guru(); |
5912 | } | 5918 | } |
5913 | 5919 | ||
5914 | 5920 | ||
5915 | Coding Standards: | 5921 | Coding Standards: |
5916 | ----------------- | 5922 | ----------------- |
5917 | 5923 | ||
5918 | All contributions to U-Boot should conform to the Linux kernel | 5924 | All contributions to U-Boot should conform to the Linux kernel |
5919 | coding style; see the file "Documentation/CodingStyle" and the script | 5925 | coding style; see the file "Documentation/CodingStyle" and the script |
5920 | "scripts/Lindent" in your Linux kernel source directory. | 5926 | "scripts/Lindent" in your Linux kernel source directory. |
5921 | 5927 | ||
5922 | Source files originating from a different project (for example the | 5928 | Source files originating from a different project (for example the |
5923 | MTD subsystem) are generally exempt from these guidelines and are not | 5929 | MTD subsystem) are generally exempt from these guidelines and are not |
5924 | reformated to ease subsequent migration to newer versions of those | 5930 | reformated to ease subsequent migration to newer versions of those |
5925 | sources. | 5931 | sources. |
5926 | 5932 | ||
5927 | Please note that U-Boot is implemented in C (and to some small parts in | 5933 | Please note that U-Boot is implemented in C (and to some small parts in |
5928 | Assembler); no C++ is used, so please do not use C++ style comments (//) | 5934 | Assembler); no C++ is used, so please do not use C++ style comments (//) |
5929 | in your code. | 5935 | in your code. |
5930 | 5936 | ||
5931 | Please also stick to the following formatting rules: | 5937 | Please also stick to the following formatting rules: |
5932 | - remove any trailing white space | 5938 | - remove any trailing white space |
5933 | - use TAB characters for indentation and vertical alignment, not spaces | 5939 | - use TAB characters for indentation and vertical alignment, not spaces |
5934 | - make sure NOT to use DOS '\r\n' line feeds | 5940 | - make sure NOT to use DOS '\r\n' line feeds |
5935 | - do not add more than 2 consecutive empty lines to source files | 5941 | - do not add more than 2 consecutive empty lines to source files |
5936 | - do not add trailing empty lines to source files | 5942 | - do not add trailing empty lines to source files |
5937 | 5943 | ||
5938 | Submissions which do not conform to the standards may be returned | 5944 | Submissions which do not conform to the standards may be returned |
5939 | with a request to reformat the changes. | 5945 | with a request to reformat the changes. |
5940 | 5946 | ||
5941 | 5947 | ||
5942 | Submitting Patches: | 5948 | Submitting Patches: |
5943 | ------------------- | 5949 | ------------------- |
5944 | 5950 | ||
5945 | Since the number of patches for U-Boot is growing, we need to | 5951 | Since the number of patches for U-Boot is growing, we need to |
5946 | establish some rules. Submissions which do not conform to these rules | 5952 | establish some rules. Submissions which do not conform to these rules |
5947 | may be rejected, even when they contain important and valuable stuff. | 5953 | may be rejected, even when they contain important and valuable stuff. |
5948 | 5954 | ||
5949 | Please see http://www.denx.de/wiki/U-Boot/Patches for details. | 5955 | Please see http://www.denx.de/wiki/U-Boot/Patches for details. |
5950 | 5956 | ||
5951 | Patches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; | 5957 | Patches shall be sent to the u-boot mailing list <u-boot@lists.denx.de>; |
5952 | see http://lists.denx.de/mailman/listinfo/u-boot | 5958 | see http://lists.denx.de/mailman/listinfo/u-boot |
5953 | 5959 | ||
5954 | When you send a patch, please include the following information with | 5960 | When you send a patch, please include the following information with |
5955 | it: | 5961 | it: |
5956 | 5962 | ||
5957 | * For bug fixes: a description of the bug and how your patch fixes | 5963 | * For bug fixes: a description of the bug and how your patch fixes |
5958 | this bug. Please try to include a way of demonstrating that the | 5964 | this bug. Please try to include a way of demonstrating that the |
5959 | patch actually fixes something. | 5965 | patch actually fixes something. |
5960 | 5966 | ||
5961 | * For new features: a description of the feature and your | 5967 | * For new features: a description of the feature and your |
5962 | implementation. | 5968 | implementation. |
5963 | 5969 | ||
5964 | * A CHANGELOG entry as plaintext (separate from the patch) | 5970 | * A CHANGELOG entry as plaintext (separate from the patch) |
5965 | 5971 | ||
5966 | * For major contributions, your entry to the CREDITS file | 5972 | * For major contributions, your entry to the CREDITS file |
5967 | 5973 | ||
5968 | * When you add support for a new board, don't forget to add a | 5974 | * When you add support for a new board, don't forget to add a |
5969 | maintainer e-mail address to the boards.cfg file, too. | 5975 | maintainer e-mail address to the boards.cfg file, too. |
5970 | 5976 | ||
5971 | * If your patch adds new configuration options, don't forget to | 5977 | * If your patch adds new configuration options, don't forget to |
5972 | document these in the README file. | 5978 | document these in the README file. |
5973 | 5979 | ||
5974 | * The patch itself. If you are using git (which is *strongly* | 5980 | * The patch itself. If you are using git (which is *strongly* |
5975 | recommended) you can easily generate the patch using the | 5981 | recommended) you can easily generate the patch using the |
5976 | "git format-patch". If you then use "git send-email" to send it to | 5982 | "git format-patch". If you then use "git send-email" to send it to |
5977 | the U-Boot mailing list, you will avoid most of the common problems | 5983 | the U-Boot mailing list, you will avoid most of the common problems |
5978 | with some other mail clients. | 5984 | with some other mail clients. |
5979 | 5985 | ||
5980 | If you cannot use git, use "diff -purN OLD NEW". If your version of | 5986 | If you cannot use git, use "diff -purN OLD NEW". If your version of |
5981 | diff does not support these options, then get the latest version of | 5987 | diff does not support these options, then get the latest version of |
5982 | GNU diff. | 5988 | GNU diff. |
5983 | 5989 | ||
5984 | The current directory when running this command shall be the parent | 5990 | The current directory when running this command shall be the parent |
5985 | directory of the U-Boot source tree (i. e. please make sure that | 5991 | directory of the U-Boot source tree (i. e. please make sure that |
5986 | your patch includes sufficient directory information for the | 5992 | your patch includes sufficient directory information for the |
5987 | affected files). | 5993 | affected files). |
5988 | 5994 | ||
5989 | We prefer patches as plain text. MIME attachments are discouraged, | 5995 | We prefer patches as plain text. MIME attachments are discouraged, |
5990 | and compressed attachments must not be used. | 5996 | and compressed attachments must not be used. |
5991 | 5997 | ||
5992 | * If one logical set of modifications affects or creates several | 5998 | * If one logical set of modifications affects or creates several |
5993 | files, all these changes shall be submitted in a SINGLE patch file. | 5999 | files, all these changes shall be submitted in a SINGLE patch file. |
5994 | 6000 | ||
5995 | * Changesets that contain different, unrelated modifications shall be | 6001 | * Changesets that contain different, unrelated modifications shall be |
5996 | submitted as SEPARATE patches, one patch per changeset. | 6002 | submitted as SEPARATE patches, one patch per changeset. |
5997 | 6003 | ||
5998 | 6004 | ||
5999 | Notes: | 6005 | Notes: |
6000 | 6006 | ||
6001 | * Before sending the patch, run the MAKEALL script on your patched | 6007 | * Before sending the patch, run the MAKEALL script on your patched |
6002 | source tree and make sure that no errors or warnings are reported | 6008 | source tree and make sure that no errors or warnings are reported |
6003 | for any of the boards. | 6009 | for any of the boards. |
6004 | 6010 | ||
6005 | * Keep your modifications to the necessary minimum: A patch | 6011 | * Keep your modifications to the necessary minimum: A patch |
6006 | containing several unrelated changes or arbitrary reformats will be | 6012 | containing several unrelated changes or arbitrary reformats will be |
6007 | returned with a request to re-formatting / split it. | 6013 | returned with a request to re-formatting / split it. |
6008 | 6014 | ||
6009 | * If you modify existing code, make sure that your new code does not | 6015 | * If you modify existing code, make sure that your new code does not |
6010 | add to the memory footprint of the code ;-) Small is beautiful! | 6016 | add to the memory footprint of the code ;-) Small is beautiful! |
6011 | When adding new features, these should compile conditionally only | 6017 | When adding new features, these should compile conditionally only |
6012 | (using #ifdef), and the resulting code with the new feature | 6018 | (using #ifdef), and the resulting code with the new feature |
6013 | disabled must not need more memory than the old code without your | 6019 | disabled must not need more memory than the old code without your |
6014 | modification. | 6020 | modification. |
6015 | 6021 | ||
6016 | * Remember that there is a size limit of 100 kB per message on the | 6022 | * Remember that there is a size limit of 100 kB per message on the |
6017 | u-boot mailing list. Bigger patches will be moderated. If they are | 6023 | u-boot mailing list. Bigger patches will be moderated. If they are |
6018 | reasonable and not too big, they will be acknowledged. But patches | 6024 | reasonable and not too big, they will be acknowledged. But patches |
6019 | bigger than the size limit should be avoided. | 6025 | bigger than the size limit should be avoided. |
6020 | 6026 |
drivers/i2c/s3c24x0_i2c.c
1 | /* | 1 | /* |
2 | * (C) Copyright 2002 | 2 | * (C) Copyright 2002 |
3 | * David Mueller, ELSOFT AG, d.mueller@elsoft.ch | 3 | * David Mueller, ELSOFT AG, d.mueller@elsoft.ch |
4 | * | 4 | * |
5 | * SPDX-License-Identifier: GPL-2.0+ | 5 | * SPDX-License-Identifier: GPL-2.0+ |
6 | */ | 6 | */ |
7 | 7 | ||
8 | /* This code should work for both the S3C2400 and the S3C2410 | 8 | /* This code should work for both the S3C2400 and the S3C2410 |
9 | * as they seem to have the same I2C controller inside. | 9 | * as they seem to have the same I2C controller inside. |
10 | * The different address mapping is handled by the s3c24xx.h files below. | 10 | * The different address mapping is handled by the s3c24xx.h files below. |
11 | */ | 11 | */ |
12 | 12 | ||
13 | #include <common.h> | 13 | #include <common.h> |
14 | #include <fdtdec.h> | 14 | #include <fdtdec.h> |
15 | #if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) | 15 | #if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) |
16 | #include <asm/arch/clk.h> | 16 | #include <asm/arch/clk.h> |
17 | #include <asm/arch/cpu.h> | 17 | #include <asm/arch/cpu.h> |
18 | #include <asm/arch/pinmux.h> | 18 | #include <asm/arch/pinmux.h> |
19 | #else | 19 | #else |
20 | #include <asm/arch/s3c24x0_cpu.h> | 20 | #include <asm/arch/s3c24x0_cpu.h> |
21 | #endif | 21 | #endif |
22 | #include <asm/io.h> | 22 | #include <asm/io.h> |
23 | #include <i2c.h> | 23 | #include <i2c.h> |
24 | #include "s3c24x0_i2c.h" | 24 | #include "s3c24x0_i2c.h" |
25 | 25 | ||
26 | #define I2C_WRITE 0 | 26 | #define I2C_WRITE 0 |
27 | #define I2C_READ 1 | 27 | #define I2C_READ 1 |
28 | 28 | ||
29 | #define I2C_OK 0 | 29 | #define I2C_OK 0 |
30 | #define I2C_NOK 1 | 30 | #define I2C_NOK 1 |
31 | #define I2C_NACK 2 | 31 | #define I2C_NACK 2 |
32 | #define I2C_NOK_LA 3 /* Lost arbitration */ | 32 | #define I2C_NOK_LA 3 /* Lost arbitration */ |
33 | #define I2C_NOK_TOUT 4 /* time out */ | 33 | #define I2C_NOK_TOUT 4 /* time out */ |
34 | 34 | ||
35 | /* HSI2C specific register description */ | 35 | /* HSI2C specific register description */ |
36 | 36 | ||
37 | /* I2C_CTL Register bits */ | 37 | /* I2C_CTL Register bits */ |
38 | #define HSI2C_FUNC_MODE_I2C (1u << 0) | 38 | #define HSI2C_FUNC_MODE_I2C (1u << 0) |
39 | #define HSI2C_MASTER (1u << 3) | 39 | #define HSI2C_MASTER (1u << 3) |
40 | #define HSI2C_RXCHON (1u << 6) /* Write/Send */ | 40 | #define HSI2C_RXCHON (1u << 6) /* Write/Send */ |
41 | #define HSI2C_TXCHON (1u << 7) /* Read/Receive */ | 41 | #define HSI2C_TXCHON (1u << 7) /* Read/Receive */ |
42 | #define HSI2C_SW_RST (1u << 31) | 42 | #define HSI2C_SW_RST (1u << 31) |
43 | 43 | ||
44 | /* I2C_FIFO_CTL Register bits */ | 44 | /* I2C_FIFO_CTL Register bits */ |
45 | #define HSI2C_RXFIFO_EN (1u << 0) | 45 | #define HSI2C_RXFIFO_EN (1u << 0) |
46 | #define HSI2C_TXFIFO_EN (1u << 1) | 46 | #define HSI2C_TXFIFO_EN (1u << 1) |
47 | #define HSI2C_TXFIFO_TRIGGER_LEVEL (0x20 << 16) | 47 | #define HSI2C_TXFIFO_TRIGGER_LEVEL (0x20 << 16) |
48 | #define HSI2C_RXFIFO_TRIGGER_LEVEL (0x20 << 4) | 48 | #define HSI2C_RXFIFO_TRIGGER_LEVEL (0x20 << 4) |
49 | 49 | ||
50 | /* I2C_TRAILING_CTL Register bits */ | 50 | /* I2C_TRAILING_CTL Register bits */ |
51 | #define HSI2C_TRAILING_COUNT (0xff) | 51 | #define HSI2C_TRAILING_COUNT (0xff) |
52 | 52 | ||
53 | /* I2C_INT_EN Register bits */ | 53 | /* I2C_INT_EN Register bits */ |
54 | #define HSI2C_TX_UNDERRUN_EN (1u << 2) | 54 | #define HSI2C_TX_UNDERRUN_EN (1u << 2) |
55 | #define HSI2C_TX_OVERRUN_EN (1u << 3) | 55 | #define HSI2C_TX_OVERRUN_EN (1u << 3) |
56 | #define HSI2C_RX_UNDERRUN_EN (1u << 4) | 56 | #define HSI2C_RX_UNDERRUN_EN (1u << 4) |
57 | #define HSI2C_RX_OVERRUN_EN (1u << 5) | 57 | #define HSI2C_RX_OVERRUN_EN (1u << 5) |
58 | #define HSI2C_INT_TRAILING_EN (1u << 6) | 58 | #define HSI2C_INT_TRAILING_EN (1u << 6) |
59 | #define HSI2C_INT_I2C_EN (1u << 9) | 59 | #define HSI2C_INT_I2C_EN (1u << 9) |
60 | 60 | ||
61 | #define HSI2C_INT_ERROR_MASK (HSI2C_TX_UNDERRUN_EN |\ | 61 | #define HSI2C_INT_ERROR_MASK (HSI2C_TX_UNDERRUN_EN |\ |
62 | HSI2C_TX_OVERRUN_EN |\ | 62 | HSI2C_TX_OVERRUN_EN |\ |
63 | HSI2C_RX_UNDERRUN_EN |\ | 63 | HSI2C_RX_UNDERRUN_EN |\ |
64 | HSI2C_RX_OVERRUN_EN |\ | 64 | HSI2C_RX_OVERRUN_EN |\ |
65 | HSI2C_INT_TRAILING_EN) | 65 | HSI2C_INT_TRAILING_EN) |
66 | 66 | ||
67 | /* I2C_CONF Register bits */ | 67 | /* I2C_CONF Register bits */ |
68 | #define HSI2C_AUTO_MODE (1u << 31) | 68 | #define HSI2C_AUTO_MODE (1u << 31) |
69 | #define HSI2C_10BIT_ADDR_MODE (1u << 30) | 69 | #define HSI2C_10BIT_ADDR_MODE (1u << 30) |
70 | #define HSI2C_HS_MODE (1u << 29) | 70 | #define HSI2C_HS_MODE (1u << 29) |
71 | 71 | ||
72 | /* I2C_AUTO_CONF Register bits */ | 72 | /* I2C_AUTO_CONF Register bits */ |
73 | #define HSI2C_READ_WRITE (1u << 16) | 73 | #define HSI2C_READ_WRITE (1u << 16) |
74 | #define HSI2C_STOP_AFTER_TRANS (1u << 17) | 74 | #define HSI2C_STOP_AFTER_TRANS (1u << 17) |
75 | #define HSI2C_MASTER_RUN (1u << 31) | 75 | #define HSI2C_MASTER_RUN (1u << 31) |
76 | 76 | ||
77 | /* I2C_TIMEOUT Register bits */ | 77 | /* I2C_TIMEOUT Register bits */ |
78 | #define HSI2C_TIMEOUT_EN (1u << 31) | 78 | #define HSI2C_TIMEOUT_EN (1u << 31) |
79 | 79 | ||
80 | /* I2C_TRANS_STATUS register bits */ | 80 | /* I2C_TRANS_STATUS register bits */ |
81 | #define HSI2C_MASTER_BUSY (1u << 17) | 81 | #define HSI2C_MASTER_BUSY (1u << 17) |
82 | #define HSI2C_SLAVE_BUSY (1u << 16) | 82 | #define HSI2C_SLAVE_BUSY (1u << 16) |
83 | #define HSI2C_TIMEOUT_AUTO (1u << 4) | 83 | #define HSI2C_TIMEOUT_AUTO (1u << 4) |
84 | #define HSI2C_NO_DEV (1u << 3) | 84 | #define HSI2C_NO_DEV (1u << 3) |
85 | #define HSI2C_NO_DEV_ACK (1u << 2) | 85 | #define HSI2C_NO_DEV_ACK (1u << 2) |
86 | #define HSI2C_TRANS_ABORT (1u << 1) | 86 | #define HSI2C_TRANS_ABORT (1u << 1) |
87 | #define HSI2C_TRANS_SUCCESS (1u << 0) | 87 | #define HSI2C_TRANS_SUCCESS (1u << 0) |
88 | #define HSI2C_TRANS_ERROR_MASK (HSI2C_TIMEOUT_AUTO |\ | 88 | #define HSI2C_TRANS_ERROR_MASK (HSI2C_TIMEOUT_AUTO |\ |
89 | HSI2C_NO_DEV | HSI2C_NO_DEV_ACK |\ | 89 | HSI2C_NO_DEV | HSI2C_NO_DEV_ACK |\ |
90 | HSI2C_TRANS_ABORT) | 90 | HSI2C_TRANS_ABORT) |
91 | #define HSI2C_TRANS_FINISHED_MASK (HSI2C_TRANS_ERROR_MASK | HSI2C_TRANS_SUCCESS) | 91 | #define HSI2C_TRANS_FINISHED_MASK (HSI2C_TRANS_ERROR_MASK | HSI2C_TRANS_SUCCESS) |
92 | 92 | ||
93 | 93 | ||
94 | /* I2C_FIFO_STAT Register bits */ | 94 | /* I2C_FIFO_STAT Register bits */ |
95 | #define HSI2C_RX_FIFO_EMPTY (1u << 24) | 95 | #define HSI2C_RX_FIFO_EMPTY (1u << 24) |
96 | #define HSI2C_RX_FIFO_FULL (1u << 23) | 96 | #define HSI2C_RX_FIFO_FULL (1u << 23) |
97 | #define HSI2C_TX_FIFO_EMPTY (1u << 8) | 97 | #define HSI2C_TX_FIFO_EMPTY (1u << 8) |
98 | #define HSI2C_TX_FIFO_FULL (1u << 7) | 98 | #define HSI2C_TX_FIFO_FULL (1u << 7) |
99 | #define HSI2C_RX_FIFO_LEVEL(x) (((x) >> 16) & 0x7f) | 99 | #define HSI2C_RX_FIFO_LEVEL(x) (((x) >> 16) & 0x7f) |
100 | #define HSI2C_TX_FIFO_LEVEL(x) ((x) & 0x7f) | 100 | #define HSI2C_TX_FIFO_LEVEL(x) ((x) & 0x7f) |
101 | 101 | ||
102 | #define HSI2C_SLV_ADDR_MAS(x) ((x & 0x3ff) << 10) | 102 | #define HSI2C_SLV_ADDR_MAS(x) ((x & 0x3ff) << 10) |
103 | 103 | ||
104 | /* S3C I2C Controller bits */ | 104 | /* S3C I2C Controller bits */ |
105 | #define I2CSTAT_BSY 0x20 /* Busy bit */ | 105 | #define I2CSTAT_BSY 0x20 /* Busy bit */ |
106 | #define I2CSTAT_NACK 0x01 /* Nack bit */ | 106 | #define I2CSTAT_NACK 0x01 /* Nack bit */ |
107 | #define I2CCON_ACKGEN 0x80 /* Acknowledge generation */ | 107 | #define I2CCON_ACKGEN 0x80 /* Acknowledge generation */ |
108 | #define I2CCON_IRPND 0x10 /* Interrupt pending bit */ | 108 | #define I2CCON_IRPND 0x10 /* Interrupt pending bit */ |
109 | #define I2C_MODE_MT 0xC0 /* Master Transmit Mode */ | 109 | #define I2C_MODE_MT 0xC0 /* Master Transmit Mode */ |
110 | #define I2C_MODE_MR 0x80 /* Master Receive Mode */ | 110 | #define I2C_MODE_MR 0x80 /* Master Receive Mode */ |
111 | #define I2C_START_STOP 0x20 /* START / STOP */ | 111 | #define I2C_START_STOP 0x20 /* START / STOP */ |
112 | #define I2C_TXRX_ENA 0x10 /* I2C Tx/Rx enable */ | 112 | #define I2C_TXRX_ENA 0x10 /* I2C Tx/Rx enable */ |
113 | 113 | ||
114 | #define I2C_TIMEOUT_MS 1000 /* 1 second */ | 114 | #define I2C_TIMEOUT_MS 1000 /* 1 second */ |
115 | 115 | ||
116 | #define HSI2C_TIMEOUT_US 100000 /* 100 ms, finer granularity */ | 116 | #define HSI2C_TIMEOUT_US 100000 /* 100 ms, finer granularity */ |
117 | 117 | ||
118 | 118 | ||
119 | /* To support VCMA9 boards and other who dont define max_i2c_num */ | 119 | /* To support VCMA9 boards and other who dont define max_i2c_num */ |
120 | #ifndef CONFIG_MAX_I2C_NUM | 120 | #ifndef CONFIG_MAX_I2C_NUM |
121 | #define CONFIG_MAX_I2C_NUM 1 | 121 | #define CONFIG_MAX_I2C_NUM 1 |
122 | #endif | 122 | #endif |
123 | 123 | ||
124 | /* | 124 | /* |
125 | * For SPL boot some boards need i2c before SDRAM is initialised so force | 125 | * For SPL boot some boards need i2c before SDRAM is initialised so force |
126 | * variables to live in SRAM | 126 | * variables to live in SRAM |
127 | */ | 127 | */ |
128 | static struct s3c24x0_i2c_bus i2c_bus[CONFIG_MAX_I2C_NUM] | 128 | static struct s3c24x0_i2c_bus i2c_bus[CONFIG_MAX_I2C_NUM] |
129 | __attribute__((section(".data"))); | 129 | __attribute__((section(".data"))); |
130 | 130 | ||
131 | /** | 131 | /** |
132 | * Get a pointer to the given bus index | 132 | * Get a pointer to the given bus index |
133 | * | 133 | * |
134 | * @bus_idx: Bus index to look up | 134 | * @bus_idx: Bus index to look up |
135 | * @return pointer to bus, or NULL if invalid or not available | 135 | * @return pointer to bus, or NULL if invalid or not available |
136 | */ | 136 | */ |
137 | static struct s3c24x0_i2c_bus *get_bus(unsigned int bus_idx) | 137 | static struct s3c24x0_i2c_bus *get_bus(unsigned int bus_idx) |
138 | { | 138 | { |
139 | if (bus_idx < ARRAY_SIZE(i2c_bus)) { | 139 | if (bus_idx < ARRAY_SIZE(i2c_bus)) { |
140 | struct s3c24x0_i2c_bus *bus; | 140 | struct s3c24x0_i2c_bus *bus; |
141 | 141 | ||
142 | bus = &i2c_bus[bus_idx]; | 142 | bus = &i2c_bus[bus_idx]; |
143 | if (bus->active) | 143 | if (bus->active) |
144 | return bus; | 144 | return bus; |
145 | } | 145 | } |
146 | 146 | ||
147 | debug("Undefined bus: %d\n", bus_idx); | 147 | debug("Undefined bus: %d\n", bus_idx); |
148 | return NULL; | 148 | return NULL; |
149 | } | 149 | } |
150 | 150 | ||
151 | #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) | 151 | #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) |
152 | static int GetI2CSDA(void) | 152 | static int GetI2CSDA(void) |
153 | { | 153 | { |
154 | struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); | 154 | struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); |
155 | 155 | ||
156 | #ifdef CONFIG_S3C2410 | 156 | #ifdef CONFIG_S3C2410 |
157 | return (readl(&gpio->gpedat) & 0x8000) >> 15; | 157 | return (readl(&gpio->gpedat) & 0x8000) >> 15; |
158 | #endif | 158 | #endif |
159 | #ifdef CONFIG_S3C2400 | 159 | #ifdef CONFIG_S3C2400 |
160 | return (readl(&gpio->pgdat) & 0x0020) >> 5; | 160 | return (readl(&gpio->pgdat) & 0x0020) >> 5; |
161 | #endif | 161 | #endif |
162 | } | 162 | } |
163 | 163 | ||
164 | static void SetI2CSCL(int x) | 164 | static void SetI2CSCL(int x) |
165 | { | 165 | { |
166 | struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); | 166 | struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); |
167 | 167 | ||
168 | #ifdef CONFIG_S3C2410 | 168 | #ifdef CONFIG_S3C2410 |
169 | writel((readl(&gpio->gpedat) & ~0x4000) | | 169 | writel((readl(&gpio->gpedat) & ~0x4000) | |
170 | (x & 1) << 14, &gpio->gpedat); | 170 | (x & 1) << 14, &gpio->gpedat); |
171 | #endif | 171 | #endif |
172 | #ifdef CONFIG_S3C2400 | 172 | #ifdef CONFIG_S3C2400 |
173 | writel((readl(&gpio->pgdat) & ~0x0040) | (x & 1) << 6, &gpio->pgdat); | 173 | writel((readl(&gpio->pgdat) & ~0x0040) | (x & 1) << 6, &gpio->pgdat); |
174 | #endif | 174 | #endif |
175 | } | 175 | } |
176 | #endif | 176 | #endif |
177 | 177 | ||
178 | /* | 178 | /* |
179 | * Wait til the byte transfer is completed. | 179 | * Wait til the byte transfer is completed. |
180 | * | 180 | * |
181 | * @param i2c- pointer to the appropriate i2c register bank. | 181 | * @param i2c- pointer to the appropriate i2c register bank. |
182 | * @return I2C_OK, if transmission was ACKED | 182 | * @return I2C_OK, if transmission was ACKED |
183 | * I2C_NACK, if transmission was NACKED | 183 | * I2C_NACK, if transmission was NACKED |
184 | * I2C_NOK_TIMEOUT, if transaction did not complete in I2C_TIMEOUT_MS | 184 | * I2C_NOK_TIMEOUT, if transaction did not complete in I2C_TIMEOUT_MS |
185 | */ | 185 | */ |
186 | 186 | ||
187 | static int WaitForXfer(struct s3c24x0_i2c *i2c) | 187 | static int WaitForXfer(struct s3c24x0_i2c *i2c) |
188 | { | 188 | { |
189 | ulong start_time = get_timer(0); | 189 | ulong start_time = get_timer(0); |
190 | 190 | ||
191 | do { | 191 | do { |
192 | if (readl(&i2c->iiccon) & I2CCON_IRPND) | 192 | if (readl(&i2c->iiccon) & I2CCON_IRPND) |
193 | return (readl(&i2c->iicstat) & I2CSTAT_NACK) ? | 193 | return (readl(&i2c->iicstat) & I2CSTAT_NACK) ? |
194 | I2C_NACK : I2C_OK; | 194 | I2C_NACK : I2C_OK; |
195 | } while (get_timer(start_time) < I2C_TIMEOUT_MS); | 195 | } while (get_timer(start_time) < I2C_TIMEOUT_MS); |
196 | 196 | ||
197 | return I2C_NOK_TOUT; | 197 | return I2C_NOK_TOUT; |
198 | } | 198 | } |
199 | 199 | ||
200 | /* | 200 | /* |
201 | * Wait for transfer completion. | 201 | * Wait for transfer completion. |
202 | * | 202 | * |
203 | * This function reads the interrupt status register waiting for the INT_I2C | 203 | * This function reads the interrupt status register waiting for the INT_I2C |
204 | * bit to be set, which indicates copletion of a transaction. | 204 | * bit to be set, which indicates copletion of a transaction. |
205 | * | 205 | * |
206 | * @param i2c: pointer to the appropriate register bank | 206 | * @param i2c: pointer to the appropriate register bank |
207 | * | 207 | * |
208 | * @return: I2C_OK in case of successful completion, I2C_NOK_TIMEOUT in case | 208 | * @return: I2C_OK in case of successful completion, I2C_NOK_TIMEOUT in case |
209 | * the status bits do not get set in time, or an approrpiate error | 209 | * the status bits do not get set in time, or an approrpiate error |
210 | * value in case of transfer errors. | 210 | * value in case of transfer errors. |
211 | */ | 211 | */ |
212 | static int hsi2c_wait_for_trx(struct exynos5_hsi2c *i2c) | 212 | static int hsi2c_wait_for_trx(struct exynos5_hsi2c *i2c) |
213 | { | 213 | { |
214 | int i = HSI2C_TIMEOUT_US; | 214 | int i = HSI2C_TIMEOUT_US; |
215 | 215 | ||
216 | while (i-- > 0) { | 216 | while (i-- > 0) { |
217 | u32 int_status = readl(&i2c->usi_int_stat); | 217 | u32 int_status = readl(&i2c->usi_int_stat); |
218 | 218 | ||
219 | if (int_status & HSI2C_INT_I2C_EN) { | 219 | if (int_status & HSI2C_INT_I2C_EN) { |
220 | u32 trans_status = readl(&i2c->usi_trans_status); | 220 | u32 trans_status = readl(&i2c->usi_trans_status); |
221 | 221 | ||
222 | /* Deassert pending interrupt. */ | 222 | /* Deassert pending interrupt. */ |
223 | writel(int_status, &i2c->usi_int_stat); | 223 | writel(int_status, &i2c->usi_int_stat); |
224 | 224 | ||
225 | if (trans_status & HSI2C_NO_DEV_ACK) { | 225 | if (trans_status & HSI2C_NO_DEV_ACK) { |
226 | debug("%s: no ACK from device\n", __func__); | 226 | debug("%s: no ACK from device\n", __func__); |
227 | return I2C_NACK; | 227 | return I2C_NACK; |
228 | } | 228 | } |
229 | if (trans_status & HSI2C_NO_DEV) { | 229 | if (trans_status & HSI2C_NO_DEV) { |
230 | debug("%s: no device\n", __func__); | 230 | debug("%s: no device\n", __func__); |
231 | return I2C_NOK; | 231 | return I2C_NOK; |
232 | } | 232 | } |
233 | if (trans_status & HSI2C_TRANS_ABORT) { | 233 | if (trans_status & HSI2C_TRANS_ABORT) { |
234 | debug("%s: arbitration lost\n", __func__); | 234 | debug("%s: arbitration lost\n", __func__); |
235 | return I2C_NOK_LA; | 235 | return I2C_NOK_LA; |
236 | } | 236 | } |
237 | if (trans_status & HSI2C_TIMEOUT_AUTO) { | 237 | if (trans_status & HSI2C_TIMEOUT_AUTO) { |
238 | debug("%s: device timed out\n", __func__); | 238 | debug("%s: device timed out\n", __func__); |
239 | return I2C_NOK_TOUT; | 239 | return I2C_NOK_TOUT; |
240 | } | 240 | } |
241 | return I2C_OK; | 241 | return I2C_OK; |
242 | } | 242 | } |
243 | udelay(1); | 243 | udelay(1); |
244 | } | 244 | } |
245 | debug("%s: transaction timeout!\n", __func__); | 245 | debug("%s: transaction timeout!\n", __func__); |
246 | return I2C_NOK_TOUT; | 246 | return I2C_NOK_TOUT; |
247 | } | 247 | } |
248 | 248 | ||
249 | static void ReadWriteByte(struct s3c24x0_i2c *i2c) | 249 | static void ReadWriteByte(struct s3c24x0_i2c *i2c) |
250 | { | 250 | { |
251 | writel(readl(&i2c->iiccon) & ~I2CCON_IRPND, &i2c->iiccon); | 251 | writel(readl(&i2c->iiccon) & ~I2CCON_IRPND, &i2c->iiccon); |
252 | } | 252 | } |
253 | 253 | ||
254 | static struct s3c24x0_i2c *get_base_i2c(int bus) | 254 | static struct s3c24x0_i2c *get_base_i2c(int bus) |
255 | { | 255 | { |
256 | #ifdef CONFIG_EXYNOS4 | 256 | #ifdef CONFIG_EXYNOS4 |
257 | struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c() | 257 | struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c() |
258 | + (EXYNOS4_I2C_SPACING | 258 | + (EXYNOS4_I2C_SPACING |
259 | * bus)); | 259 | * bus)); |
260 | return i2c; | 260 | return i2c; |
261 | #elif defined CONFIG_EXYNOS5 | 261 | #elif defined CONFIG_EXYNOS5 |
262 | struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c() | 262 | struct s3c24x0_i2c *i2c = (struct s3c24x0_i2c *)(samsung_get_base_i2c() |
263 | + (EXYNOS5_I2C_SPACING | 263 | + (EXYNOS5_I2C_SPACING |
264 | * bus)); | 264 | * bus)); |
265 | return i2c; | 265 | return i2c; |
266 | #else | 266 | #else |
267 | return s3c24x0_get_base_i2c(); | 267 | return s3c24x0_get_base_i2c(); |
268 | #endif | 268 | #endif |
269 | } | 269 | } |
270 | 270 | ||
271 | static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd) | 271 | static void i2c_ch_init(struct s3c24x0_i2c *i2c, int speed, int slaveadd) |
272 | { | 272 | { |
273 | ulong freq, pres = 16, div; | 273 | ulong freq, pres = 16, div; |
274 | #if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) | 274 | #if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) |
275 | freq = get_i2c_clk(); | 275 | freq = get_i2c_clk(); |
276 | #else | 276 | #else |
277 | freq = get_PCLK(); | 277 | freq = get_PCLK(); |
278 | #endif | 278 | #endif |
279 | /* calculate prescaler and divisor values */ | 279 | /* calculate prescaler and divisor values */ |
280 | if ((freq / pres / (16 + 1)) > speed) | 280 | if ((freq / pres / (16 + 1)) > speed) |
281 | /* set prescaler to 512 */ | 281 | /* set prescaler to 512 */ |
282 | pres = 512; | 282 | pres = 512; |
283 | 283 | ||
284 | div = 0; | 284 | div = 0; |
285 | while ((freq / pres / (div + 1)) > speed) | 285 | while ((freq / pres / (div + 1)) > speed) |
286 | div++; | 286 | div++; |
287 | 287 | ||
288 | /* set prescaler, divisor according to freq, also set ACKGEN, IRQ */ | 288 | /* set prescaler, divisor according to freq, also set ACKGEN, IRQ */ |
289 | writel((div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0), &i2c->iiccon); | 289 | writel((div & 0x0F) | 0xA0 | ((pres == 512) ? 0x40 : 0), &i2c->iiccon); |
290 | 290 | ||
291 | /* init to SLAVE REVEIVE and set slaveaddr */ | 291 | /* init to SLAVE REVEIVE and set slaveaddr */ |
292 | writel(0, &i2c->iicstat); | 292 | writel(0, &i2c->iicstat); |
293 | writel(slaveadd, &i2c->iicadd); | 293 | writel(slaveadd, &i2c->iicadd); |
294 | /* program Master Transmit (and implicit STOP) */ | 294 | /* program Master Transmit (and implicit STOP) */ |
295 | writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat); | 295 | writel(I2C_MODE_MT | I2C_TXRX_ENA, &i2c->iicstat); |
296 | } | 296 | } |
297 | 297 | ||
298 | static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus) | 298 | static int hsi2c_get_clk_details(struct s3c24x0_i2c_bus *i2c_bus) |
299 | { | 299 | { |
300 | struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; | 300 | struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; |
301 | ulong clkin; | 301 | ulong clkin; |
302 | unsigned int op_clk = i2c_bus->clock_frequency; | 302 | unsigned int op_clk = i2c_bus->clock_frequency; |
303 | unsigned int i = 0, utemp0 = 0, utemp1 = 0; | 303 | unsigned int i = 0, utemp0 = 0, utemp1 = 0; |
304 | unsigned int t_ftl_cycle; | 304 | unsigned int t_ftl_cycle; |
305 | 305 | ||
306 | #if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) | 306 | #if (defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) |
307 | clkin = get_i2c_clk(); | 307 | clkin = get_i2c_clk(); |
308 | #else | 308 | #else |
309 | clkin = get_PCLK(); | 309 | clkin = get_PCLK(); |
310 | #endif | 310 | #endif |
311 | /* FPCLK / FI2C = | 311 | /* FPCLK / FI2C = |
312 | * (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) + 8 + 2 * FLT_CYCLE | 312 | * (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) + 8 + 2 * FLT_CYCLE |
313 | * uTemp0 = (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) | 313 | * uTemp0 = (CLK_DIV + 1) * (TSCLK_L + TSCLK_H + 2) |
314 | * uTemp1 = (TSCLK_L + TSCLK_H + 2) | 314 | * uTemp1 = (TSCLK_L + TSCLK_H + 2) |
315 | * uTemp2 = TSCLK_L + TSCLK_H | 315 | * uTemp2 = TSCLK_L + TSCLK_H |
316 | */ | 316 | */ |
317 | t_ftl_cycle = (readl(&hsregs->usi_conf) >> 16) & 0x7; | 317 | t_ftl_cycle = (readl(&hsregs->usi_conf) >> 16) & 0x7; |
318 | utemp0 = (clkin / op_clk) - 8 - 2 * t_ftl_cycle; | 318 | utemp0 = (clkin / op_clk) - 8 - 2 * t_ftl_cycle; |
319 | 319 | ||
320 | /* CLK_DIV max is 256 */ | 320 | /* CLK_DIV max is 256 */ |
321 | for (i = 0; i < 256; i++) { | 321 | for (i = 0; i < 256; i++) { |
322 | utemp1 = utemp0 / (i + 1); | 322 | utemp1 = utemp0 / (i + 1); |
323 | if ((utemp1 < 512) && (utemp1 > 4)) { | 323 | if ((utemp1 < 512) && (utemp1 > 4)) { |
324 | i2c_bus->clk_cycle = utemp1 - 2; | 324 | i2c_bus->clk_cycle = utemp1 - 2; |
325 | i2c_bus->clk_div = i; | 325 | i2c_bus->clk_div = i; |
326 | return 0; | 326 | return 0; |
327 | } | 327 | } |
328 | } | 328 | } |
329 | return -1; | 329 | return -1; |
330 | } | 330 | } |
331 | 331 | ||
332 | static void hsi2c_ch_init(struct s3c24x0_i2c_bus *i2c_bus) | 332 | static void hsi2c_ch_init(struct s3c24x0_i2c_bus *i2c_bus) |
333 | { | 333 | { |
334 | struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; | 334 | struct exynos5_hsi2c *hsregs = i2c_bus->hsregs; |
335 | unsigned int t_sr_release; | 335 | unsigned int t_sr_release; |
336 | unsigned int n_clkdiv; | 336 | unsigned int n_clkdiv; |
337 | unsigned int t_start_su, t_start_hd; | 337 | unsigned int t_start_su, t_start_hd; |
338 | unsigned int t_stop_su; | 338 | unsigned int t_stop_su; |
339 | unsigned int t_data_su, t_data_hd; | 339 | unsigned int t_data_su, t_data_hd; |
340 | unsigned int t_scl_l, t_scl_h; | 340 | unsigned int t_scl_l, t_scl_h; |
341 | u32 i2c_timing_s1; | 341 | u32 i2c_timing_s1; |
342 | u32 i2c_timing_s2; | 342 | u32 i2c_timing_s2; |
343 | u32 i2c_timing_s3; | 343 | u32 i2c_timing_s3; |
344 | u32 i2c_timing_sla; | 344 | u32 i2c_timing_sla; |
345 | 345 | ||
346 | n_clkdiv = i2c_bus->clk_div; | 346 | n_clkdiv = i2c_bus->clk_div; |
347 | t_scl_l = i2c_bus->clk_cycle / 2; | 347 | t_scl_l = i2c_bus->clk_cycle / 2; |
348 | t_scl_h = i2c_bus->clk_cycle / 2; | 348 | t_scl_h = i2c_bus->clk_cycle / 2; |
349 | t_start_su = t_scl_l; | 349 | t_start_su = t_scl_l; |
350 | t_start_hd = t_scl_l; | 350 | t_start_hd = t_scl_l; |
351 | t_stop_su = t_scl_l; | 351 | t_stop_su = t_scl_l; |
352 | t_data_su = t_scl_l / 2; | 352 | t_data_su = t_scl_l / 2; |
353 | t_data_hd = t_scl_l / 2; | 353 | t_data_hd = t_scl_l / 2; |
354 | t_sr_release = i2c_bus->clk_cycle; | 354 | t_sr_release = i2c_bus->clk_cycle; |
355 | 355 | ||
356 | i2c_timing_s1 = t_start_su << 24 | t_start_hd << 16 | t_stop_su << 8; | 356 | i2c_timing_s1 = t_start_su << 24 | t_start_hd << 16 | t_stop_su << 8; |
357 | i2c_timing_s2 = t_data_su << 24 | t_scl_l << 8 | t_scl_h << 0; | 357 | i2c_timing_s2 = t_data_su << 24 | t_scl_l << 8 | t_scl_h << 0; |
358 | i2c_timing_s3 = n_clkdiv << 16 | t_sr_release << 0; | 358 | i2c_timing_s3 = n_clkdiv << 16 | t_sr_release << 0; |
359 | i2c_timing_sla = t_data_hd << 0; | 359 | i2c_timing_sla = t_data_hd << 0; |
360 | 360 | ||
361 | writel(HSI2C_TRAILING_COUNT, &hsregs->usi_trailing_ctl); | 361 | writel(HSI2C_TRAILING_COUNT, &hsregs->usi_trailing_ctl); |
362 | 362 | ||
363 | /* Clear to enable Timeout */ | 363 | /* Clear to enable Timeout */ |
364 | clrsetbits_le32(&hsregs->usi_timeout, HSI2C_TIMEOUT_EN, 0); | 364 | clrsetbits_le32(&hsregs->usi_timeout, HSI2C_TIMEOUT_EN, 0); |
365 | 365 | ||
366 | /* set AUTO mode */ | 366 | /* set AUTO mode */ |
367 | writel(readl(&hsregs->usi_conf) | HSI2C_AUTO_MODE, &hsregs->usi_conf); | 367 | writel(readl(&hsregs->usi_conf) | HSI2C_AUTO_MODE, &hsregs->usi_conf); |
368 | 368 | ||
369 | /* Enable completion conditions' reporting. */ | 369 | /* Enable completion conditions' reporting. */ |
370 | writel(HSI2C_INT_I2C_EN, &hsregs->usi_int_en); | 370 | writel(HSI2C_INT_I2C_EN, &hsregs->usi_int_en); |
371 | 371 | ||
372 | /* Enable FIFOs */ | 372 | /* Enable FIFOs */ |
373 | writel(HSI2C_RXFIFO_EN | HSI2C_TXFIFO_EN, &hsregs->usi_fifo_ctl); | 373 | writel(HSI2C_RXFIFO_EN | HSI2C_TXFIFO_EN, &hsregs->usi_fifo_ctl); |
374 | 374 | ||
375 | /* Currently operating in Fast speed mode. */ | 375 | /* Currently operating in Fast speed mode. */ |
376 | writel(i2c_timing_s1, &hsregs->usi_timing_fs1); | 376 | writel(i2c_timing_s1, &hsregs->usi_timing_fs1); |
377 | writel(i2c_timing_s2, &hsregs->usi_timing_fs2); | 377 | writel(i2c_timing_s2, &hsregs->usi_timing_fs2); |
378 | writel(i2c_timing_s3, &hsregs->usi_timing_fs3); | 378 | writel(i2c_timing_s3, &hsregs->usi_timing_fs3); |
379 | writel(i2c_timing_sla, &hsregs->usi_timing_sla); | 379 | writel(i2c_timing_sla, &hsregs->usi_timing_sla); |
380 | } | 380 | } |
381 | 381 | ||
382 | /* SW reset for the high speed bus */ | 382 | /* SW reset for the high speed bus */ |
383 | static void exynos5_i2c_reset(struct s3c24x0_i2c_bus *i2c_bus) | 383 | static void exynos5_i2c_reset(struct s3c24x0_i2c_bus *i2c_bus) |
384 | { | 384 | { |
385 | struct exynos5_hsi2c *i2c = i2c_bus->hsregs; | 385 | struct exynos5_hsi2c *i2c = i2c_bus->hsregs; |
386 | u32 i2c_ctl; | 386 | u32 i2c_ctl; |
387 | 387 | ||
388 | /* Set and clear the bit for reset */ | 388 | /* Set and clear the bit for reset */ |
389 | i2c_ctl = readl(&i2c->usi_ctl); | 389 | i2c_ctl = readl(&i2c->usi_ctl); |
390 | i2c_ctl |= HSI2C_SW_RST; | 390 | i2c_ctl |= HSI2C_SW_RST; |
391 | writel(i2c_ctl, &i2c->usi_ctl); | 391 | writel(i2c_ctl, &i2c->usi_ctl); |
392 | 392 | ||
393 | i2c_ctl = readl(&i2c->usi_ctl); | 393 | i2c_ctl = readl(&i2c->usi_ctl); |
394 | i2c_ctl &= ~HSI2C_SW_RST; | 394 | i2c_ctl &= ~HSI2C_SW_RST; |
395 | writel(i2c_ctl, &i2c->usi_ctl); | 395 | writel(i2c_ctl, &i2c->usi_ctl); |
396 | 396 | ||
397 | /* Initialize the configure registers */ | 397 | /* Initialize the configure registers */ |
398 | hsi2c_ch_init(i2c_bus); | 398 | hsi2c_ch_init(i2c_bus); |
399 | } | 399 | } |
400 | 400 | ||
401 | static void s3c24x0_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) | 401 | static void s3c24x0_i2c_init(struct i2c_adapter *adap, int speed, int slaveadd) |
402 | { | 402 | { |
403 | struct s3c24x0_i2c *i2c; | 403 | struct s3c24x0_i2c *i2c; |
404 | struct s3c24x0_i2c_bus *bus; | 404 | struct s3c24x0_i2c_bus *bus; |
405 | 405 | ||
406 | #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) | 406 | #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) |
407 | struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); | 407 | struct s3c24x0_gpio *gpio = s3c24x0_get_base_gpio(); |
408 | #endif | 408 | #endif |
409 | ulong start_time = get_timer(0); | 409 | ulong start_time = get_timer(0); |
410 | 410 | ||
411 | /* By default i2c channel 0 is the current bus */ | 411 | /* By default i2c channel 0 is the current bus */ |
412 | i2c = get_base_i2c(adap->hwadapnr); | 412 | i2c = get_base_i2c(adap->hwadapnr); |
413 | 413 | ||
414 | /* | 414 | /* |
415 | * In case the previous transfer is still going, wait to give it a | 415 | * In case the previous transfer is still going, wait to give it a |
416 | * chance to finish. | 416 | * chance to finish. |
417 | */ | 417 | */ |
418 | while (readl(&i2c->iicstat) & I2CSTAT_BSY) { | 418 | while (readl(&i2c->iicstat) & I2CSTAT_BSY) { |
419 | if (get_timer(start_time) > I2C_TIMEOUT_MS) { | 419 | if (get_timer(start_time) > I2C_TIMEOUT_MS) { |
420 | printf("%s: I2C bus busy for %p\n", __func__, | 420 | printf("%s: I2C bus busy for %p\n", __func__, |
421 | &i2c->iicstat); | 421 | &i2c->iicstat); |
422 | return; | 422 | return; |
423 | } | 423 | } |
424 | } | 424 | } |
425 | 425 | ||
426 | #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) | 426 | #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) |
427 | int i; | 427 | int i; |
428 | 428 | ||
429 | if ((readl(&i2c->iicstat) & I2CSTAT_BSY) || GetI2CSDA() == 0) { | 429 | if ((readl(&i2c->iicstat) & I2CSTAT_BSY) || GetI2CSDA() == 0) { |
430 | #ifdef CONFIG_S3C2410 | 430 | #ifdef CONFIG_S3C2410 |
431 | ulong old_gpecon = readl(&gpio->gpecon); | 431 | ulong old_gpecon = readl(&gpio->gpecon); |
432 | #endif | 432 | #endif |
433 | #ifdef CONFIG_S3C2400 | 433 | #ifdef CONFIG_S3C2400 |
434 | ulong old_gpecon = readl(&gpio->pgcon); | 434 | ulong old_gpecon = readl(&gpio->pgcon); |
435 | #endif | 435 | #endif |
436 | /* bus still busy probably by (most) previously interrupted | 436 | /* bus still busy probably by (most) previously interrupted |
437 | transfer */ | 437 | transfer */ |
438 | 438 | ||
439 | #ifdef CONFIG_S3C2410 | 439 | #ifdef CONFIG_S3C2410 |
440 | /* set I2CSDA and I2CSCL (GPE15, GPE14) to GPIO */ | 440 | /* set I2CSDA and I2CSCL (GPE15, GPE14) to GPIO */ |
441 | writel((readl(&gpio->gpecon) & ~0xF0000000) | 0x10000000, | 441 | writel((readl(&gpio->gpecon) & ~0xF0000000) | 0x10000000, |
442 | &gpio->gpecon); | 442 | &gpio->gpecon); |
443 | #endif | 443 | #endif |
444 | #ifdef CONFIG_S3C2400 | 444 | #ifdef CONFIG_S3C2400 |
445 | /* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */ | 445 | /* set I2CSDA and I2CSCL (PG5, PG6) to GPIO */ |
446 | writel((readl(&gpio->pgcon) & ~0x00003c00) | 0x00001000, | 446 | writel((readl(&gpio->pgcon) & ~0x00003c00) | 0x00001000, |
447 | &gpio->pgcon); | 447 | &gpio->pgcon); |
448 | #endif | 448 | #endif |
449 | 449 | ||
450 | /* toggle I2CSCL until bus idle */ | 450 | /* toggle I2CSCL until bus idle */ |
451 | SetI2CSCL(0); | 451 | SetI2CSCL(0); |
452 | udelay(1000); | 452 | udelay(1000); |
453 | i = 10; | 453 | i = 10; |
454 | while ((i > 0) && (GetI2CSDA() != 1)) { | 454 | while ((i > 0) && (GetI2CSDA() != 1)) { |
455 | SetI2CSCL(1); | 455 | SetI2CSCL(1); |
456 | udelay(1000); | 456 | udelay(1000); |
457 | SetI2CSCL(0); | 457 | SetI2CSCL(0); |
458 | udelay(1000); | 458 | udelay(1000); |
459 | i--; | 459 | i--; |
460 | } | 460 | } |
461 | SetI2CSCL(1); | 461 | SetI2CSCL(1); |
462 | udelay(1000); | 462 | udelay(1000); |
463 | 463 | ||
464 | /* restore pin functions */ | 464 | /* restore pin functions */ |
465 | #ifdef CONFIG_S3C2410 | 465 | #ifdef CONFIG_S3C2410 |
466 | writel(old_gpecon, &gpio->gpecon); | 466 | writel(old_gpecon, &gpio->gpecon); |
467 | #endif | 467 | #endif |
468 | #ifdef CONFIG_S3C2400 | 468 | #ifdef CONFIG_S3C2400 |
469 | writel(old_gpecon, &gpio->pgcon); | 469 | writel(old_gpecon, &gpio->pgcon); |
470 | #endif | 470 | #endif |
471 | } | 471 | } |
472 | #endif /* #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) */ | 472 | #endif /* #if !(defined CONFIG_EXYNOS4 || defined CONFIG_EXYNOS5) */ |
473 | i2c_ch_init(i2c, speed, slaveadd); | 473 | i2c_ch_init(i2c, speed, slaveadd); |
474 | 474 | ||
475 | bus = &i2c_bus[adap->hwadapnr]; | 475 | bus = &i2c_bus[adap->hwadapnr]; |
476 | bus->active = true; | 476 | bus->active = true; |
477 | bus->regs = i2c; | 477 | bus->regs = i2c; |
478 | } | 478 | } |
479 | 479 | ||
480 | /* | 480 | /* |
481 | * Poll the appropriate bit of the fifo status register until the interface is | 481 | * Poll the appropriate bit of the fifo status register until the interface is |
482 | * ready to process the next byte or timeout expires. | 482 | * ready to process the next byte or timeout expires. |
483 | * | 483 | * |
484 | * In addition to the FIFO status register this function also polls the | 484 | * In addition to the FIFO status register this function also polls the |
485 | * interrupt status register to be able to detect unexpected transaction | 485 | * interrupt status register to be able to detect unexpected transaction |
486 | * completion. | 486 | * completion. |
487 | * | 487 | * |
488 | * When FIFO is ready to process the next byte, this function returns I2C_OK. | 488 | * When FIFO is ready to process the next byte, this function returns I2C_OK. |
489 | * If in course of polling the INT_I2C assertion is detected, the function | 489 | * If in course of polling the INT_I2C assertion is detected, the function |
490 | * returns I2C_NOK. If timeout happens before any of the above conditions is | 490 | * returns I2C_NOK. If timeout happens before any of the above conditions is |
491 | * met - the function returns I2C_NOK_TOUT; | 491 | * met - the function returns I2C_NOK_TOUT; |
492 | 492 | ||
493 | * @param i2c: pointer to the appropriate i2c register bank. | 493 | * @param i2c: pointer to the appropriate i2c register bank. |
494 | * @param rx_transfer: set to True if the receive transaction is in progress. | 494 | * @param rx_transfer: set to True if the receive transaction is in progress. |
495 | * @return: as described above. | 495 | * @return: as described above. |
496 | */ | 496 | */ |
497 | static unsigned hsi2c_poll_fifo(struct exynos5_hsi2c *i2c, bool rx_transfer) | 497 | static unsigned hsi2c_poll_fifo(struct exynos5_hsi2c *i2c, bool rx_transfer) |
498 | { | 498 | { |
499 | u32 fifo_bit = rx_transfer ? HSI2C_RX_FIFO_EMPTY : HSI2C_TX_FIFO_FULL; | 499 | u32 fifo_bit = rx_transfer ? HSI2C_RX_FIFO_EMPTY : HSI2C_TX_FIFO_FULL; |
500 | int i = HSI2C_TIMEOUT_US; | 500 | int i = HSI2C_TIMEOUT_US; |
501 | 501 | ||
502 | while (readl(&i2c->usi_fifo_stat) & fifo_bit) { | 502 | while (readl(&i2c->usi_fifo_stat) & fifo_bit) { |
503 | if (readl(&i2c->usi_int_stat) & HSI2C_INT_I2C_EN) { | 503 | if (readl(&i2c->usi_int_stat) & HSI2C_INT_I2C_EN) { |
504 | /* | 504 | /* |
505 | * There is a chance that assertion of | 505 | * There is a chance that assertion of |
506 | * HSI2C_INT_I2C_EN and deassertion of | 506 | * HSI2C_INT_I2C_EN and deassertion of |
507 | * HSI2C_RX_FIFO_EMPTY happen simultaneously. Let's | 507 | * HSI2C_RX_FIFO_EMPTY happen simultaneously. Let's |
508 | * give FIFO status priority and check it one more | 508 | * give FIFO status priority and check it one more |
509 | * time before reporting interrupt. The interrupt will | 509 | * time before reporting interrupt. The interrupt will |
510 | * be reported next time this function is called. | 510 | * be reported next time this function is called. |
511 | */ | 511 | */ |
512 | if (rx_transfer && | 512 | if (rx_transfer && |
513 | !(readl(&i2c->usi_fifo_stat) & fifo_bit)) | 513 | !(readl(&i2c->usi_fifo_stat) & fifo_bit)) |
514 | break; | 514 | break; |
515 | return I2C_NOK; | 515 | return I2C_NOK; |
516 | } | 516 | } |
517 | if (!i--) { | 517 | if (!i--) { |
518 | debug("%s: FIFO polling timeout!\n", __func__); | 518 | debug("%s: FIFO polling timeout!\n", __func__); |
519 | return I2C_NOK_TOUT; | 519 | return I2C_NOK_TOUT; |
520 | } | 520 | } |
521 | udelay(1); | 521 | udelay(1); |
522 | } | 522 | } |
523 | return I2C_OK; | 523 | return I2C_OK; |
524 | } | 524 | } |
525 | 525 | ||
526 | /* | 526 | /* |
527 | * Preapre hsi2c transaction, either read or write. | 527 | * Preapre hsi2c transaction, either read or write. |
528 | * | 528 | * |
529 | * Set up transfer as described in section 27.5.1.2 'I2C Channel Auto Mode' of | 529 | * Set up transfer as described in section 27.5.1.2 'I2C Channel Auto Mode' of |
530 | * the 5420 UM. | 530 | * the 5420 UM. |
531 | * | 531 | * |
532 | * @param i2c: pointer to the appropriate i2c register bank. | 532 | * @param i2c: pointer to the appropriate i2c register bank. |
533 | * @param chip: slave address on the i2c bus (with read/write bit exlcuded) | 533 | * @param chip: slave address on the i2c bus (with read/write bit exlcuded) |
534 | * @param len: number of bytes expected to be sent or received | 534 | * @param len: number of bytes expected to be sent or received |
535 | * @param rx_transfer: set to true for receive transactions | 535 | * @param rx_transfer: set to true for receive transactions |
536 | * @param: issue_stop: set to true if i2c stop condition should be generated | 536 | * @param: issue_stop: set to true if i2c stop condition should be generated |
537 | * after this transaction. | 537 | * after this transaction. |
538 | * @return: I2C_NOK_TOUT in case the bus remained busy for HSI2C_TIMEOUT_US, | 538 | * @return: I2C_NOK_TOUT in case the bus remained busy for HSI2C_TIMEOUT_US, |
539 | * I2C_OK otherwise. | 539 | * I2C_OK otherwise. |
540 | */ | 540 | */ |
541 | static int hsi2c_prepare_transaction(struct exynos5_hsi2c *i2c, | 541 | static int hsi2c_prepare_transaction(struct exynos5_hsi2c *i2c, |
542 | u8 chip, | 542 | u8 chip, |
543 | u16 len, | 543 | u16 len, |
544 | bool rx_transfer, | 544 | bool rx_transfer, |
545 | bool issue_stop) | 545 | bool issue_stop) |
546 | { | 546 | { |
547 | u32 conf; | 547 | u32 conf; |
548 | 548 | ||
549 | conf = len | HSI2C_MASTER_RUN; | 549 | conf = len | HSI2C_MASTER_RUN; |
550 | 550 | ||
551 | if (issue_stop) | 551 | if (issue_stop) |
552 | conf |= HSI2C_STOP_AFTER_TRANS; | 552 | conf |= HSI2C_STOP_AFTER_TRANS; |
553 | 553 | ||
554 | /* Clear to enable Timeout */ | 554 | /* Clear to enable Timeout */ |
555 | writel(readl(&i2c->usi_timeout) & ~HSI2C_TIMEOUT_EN, &i2c->usi_timeout); | 555 | writel(readl(&i2c->usi_timeout) & ~HSI2C_TIMEOUT_EN, &i2c->usi_timeout); |
556 | 556 | ||
557 | /* Set slave address */ | 557 | /* Set slave address */ |
558 | writel(HSI2C_SLV_ADDR_MAS(chip), &i2c->i2c_addr); | 558 | writel(HSI2C_SLV_ADDR_MAS(chip), &i2c->i2c_addr); |
559 | 559 | ||
560 | if (rx_transfer) { | 560 | if (rx_transfer) { |
561 | /* i2c master, read transaction */ | 561 | /* i2c master, read transaction */ |
562 | writel((HSI2C_RXCHON | HSI2C_FUNC_MODE_I2C | HSI2C_MASTER), | 562 | writel((HSI2C_RXCHON | HSI2C_FUNC_MODE_I2C | HSI2C_MASTER), |
563 | &i2c->usi_ctl); | 563 | &i2c->usi_ctl); |
564 | 564 | ||
565 | /* read up to len bytes, stop after transaction is finished */ | 565 | /* read up to len bytes, stop after transaction is finished */ |
566 | writel(conf | HSI2C_READ_WRITE, &i2c->usi_auto_conf); | 566 | writel(conf | HSI2C_READ_WRITE, &i2c->usi_auto_conf); |
567 | } else { | 567 | } else { |
568 | /* i2c master, write transaction */ | 568 | /* i2c master, write transaction */ |
569 | writel((HSI2C_TXCHON | HSI2C_FUNC_MODE_I2C | HSI2C_MASTER), | 569 | writel((HSI2C_TXCHON | HSI2C_FUNC_MODE_I2C | HSI2C_MASTER), |
570 | &i2c->usi_ctl); | 570 | &i2c->usi_ctl); |
571 | 571 | ||
572 | /* write up to len bytes, stop after transaction is finished */ | 572 | /* write up to len bytes, stop after transaction is finished */ |
573 | writel(conf, &i2c->usi_auto_conf); | 573 | writel(conf, &i2c->usi_auto_conf); |
574 | } | 574 | } |
575 | 575 | ||
576 | /* Reset all pending interrupt status bits we care about, if any */ | 576 | /* Reset all pending interrupt status bits we care about, if any */ |
577 | writel(HSI2C_INT_I2C_EN, &i2c->usi_int_stat); | 577 | writel(HSI2C_INT_I2C_EN, &i2c->usi_int_stat); |
578 | 578 | ||
579 | return I2C_OK; | 579 | return I2C_OK; |
580 | } | 580 | } |
581 | 581 | ||
582 | /* | 582 | /* |
583 | * Wait while i2c bus is settling down (mostly stop gets completed). | 583 | * Wait while i2c bus is settling down (mostly stop gets completed). |
584 | */ | 584 | */ |
585 | static int hsi2c_wait_while_busy(struct exynos5_hsi2c *i2c) | 585 | static int hsi2c_wait_while_busy(struct exynos5_hsi2c *i2c) |
586 | { | 586 | { |
587 | int i = HSI2C_TIMEOUT_US; | 587 | int i = HSI2C_TIMEOUT_US; |
588 | 588 | ||
589 | while (readl(&i2c->usi_trans_status) & HSI2C_MASTER_BUSY) { | 589 | while (readl(&i2c->usi_trans_status) & HSI2C_MASTER_BUSY) { |
590 | if (!i--) { | 590 | if (!i--) { |
591 | debug("%s: bus busy\n", __func__); | 591 | debug("%s: bus busy\n", __func__); |
592 | return I2C_NOK_TOUT; | 592 | return I2C_NOK_TOUT; |
593 | } | 593 | } |
594 | udelay(1); | 594 | udelay(1); |
595 | } | 595 | } |
596 | return I2C_OK; | 596 | return I2C_OK; |
597 | } | 597 | } |
598 | 598 | ||
599 | static int hsi2c_write(struct exynos5_hsi2c *i2c, | 599 | static int hsi2c_write(struct exynos5_hsi2c *i2c, |
600 | unsigned char chip, | 600 | unsigned char chip, |
601 | unsigned char addr[], | 601 | unsigned char addr[], |
602 | unsigned char alen, | 602 | unsigned char alen, |
603 | unsigned char data[], | 603 | unsigned char data[], |
604 | unsigned short len, | 604 | unsigned short len, |
605 | bool issue_stop) | 605 | bool issue_stop) |
606 | { | 606 | { |
607 | int i, rv = 0; | 607 | int i, rv = 0; |
608 | 608 | ||
609 | if (!(len + alen)) { | 609 | if (!(len + alen)) { |
610 | /* Writes of zero length not supported in auto mode. */ | 610 | /* Writes of zero length not supported in auto mode. */ |
611 | debug("%s: zero length writes not supported\n", __func__); | 611 | debug("%s: zero length writes not supported\n", __func__); |
612 | return I2C_NOK; | 612 | return I2C_NOK; |
613 | } | 613 | } |
614 | 614 | ||
615 | rv = hsi2c_prepare_transaction | 615 | rv = hsi2c_prepare_transaction |
616 | (i2c, chip, len + alen, false, issue_stop); | 616 | (i2c, chip, len + alen, false, issue_stop); |
617 | if (rv != I2C_OK) | 617 | if (rv != I2C_OK) |
618 | return rv; | 618 | return rv; |
619 | 619 | ||
620 | /* Move address, if any, and the data, if any, into the FIFO. */ | 620 | /* Move address, if any, and the data, if any, into the FIFO. */ |
621 | for (i = 0; i < alen; i++) { | 621 | for (i = 0; i < alen; i++) { |
622 | rv = hsi2c_poll_fifo(i2c, false); | 622 | rv = hsi2c_poll_fifo(i2c, false); |
623 | if (rv != I2C_OK) { | 623 | if (rv != I2C_OK) { |
624 | debug("%s: address write failed\n", __func__); | 624 | debug("%s: address write failed\n", __func__); |
625 | goto write_error; | 625 | goto write_error; |
626 | } | 626 | } |
627 | writel(addr[i], &i2c->usi_txdata); | 627 | writel(addr[i], &i2c->usi_txdata); |
628 | } | 628 | } |
629 | 629 | ||
630 | for (i = 0; i < len; i++) { | 630 | for (i = 0; i < len; i++) { |
631 | rv = hsi2c_poll_fifo(i2c, false); | 631 | rv = hsi2c_poll_fifo(i2c, false); |
632 | if (rv != I2C_OK) { | 632 | if (rv != I2C_OK) { |
633 | debug("%s: data write failed\n", __func__); | 633 | debug("%s: data write failed\n", __func__); |
634 | goto write_error; | 634 | goto write_error; |
635 | } | 635 | } |
636 | writel(data[i], &i2c->usi_txdata); | 636 | writel(data[i], &i2c->usi_txdata); |
637 | } | 637 | } |
638 | 638 | ||
639 | rv = hsi2c_wait_for_trx(i2c); | 639 | rv = hsi2c_wait_for_trx(i2c); |
640 | 640 | ||
641 | write_error: | 641 | write_error: |
642 | if (issue_stop) { | 642 | if (issue_stop) { |
643 | int tmp_ret = hsi2c_wait_while_busy(i2c); | 643 | int tmp_ret = hsi2c_wait_while_busy(i2c); |
644 | if (rv == I2C_OK) | 644 | if (rv == I2C_OK) |
645 | rv = tmp_ret; | 645 | rv = tmp_ret; |
646 | } | 646 | } |
647 | 647 | ||
648 | writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */ | 648 | writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */ |
649 | return rv; | 649 | return rv; |
650 | } | 650 | } |
651 | 651 | ||
652 | static int hsi2c_read(struct exynos5_hsi2c *i2c, | 652 | static int hsi2c_read(struct exynos5_hsi2c *i2c, |
653 | unsigned char chip, | 653 | unsigned char chip, |
654 | unsigned char addr[], | 654 | unsigned char addr[], |
655 | unsigned char alen, | 655 | unsigned char alen, |
656 | unsigned char data[], | 656 | unsigned char data[], |
657 | unsigned short len) | 657 | unsigned short len) |
658 | { | 658 | { |
659 | int i, rv, tmp_ret; | 659 | int i, rv, tmp_ret; |
660 | bool drop_data = false; | 660 | bool drop_data = false; |
661 | 661 | ||
662 | if (!len) { | 662 | if (!len) { |
663 | /* Reads of zero length not supported in auto mode. */ | 663 | /* Reads of zero length not supported in auto mode. */ |
664 | debug("%s: zero length read adjusted\n", __func__); | 664 | debug("%s: zero length read adjusted\n", __func__); |
665 | drop_data = true; | 665 | drop_data = true; |
666 | len = 1; | 666 | len = 1; |
667 | } | 667 | } |
668 | 668 | ||
669 | if (alen) { | 669 | if (alen) { |
670 | /* Internal register adress needs to be written first. */ | 670 | /* Internal register adress needs to be written first. */ |
671 | rv = hsi2c_write(i2c, chip, addr, alen, NULL, 0, false); | 671 | rv = hsi2c_write(i2c, chip, addr, alen, NULL, 0, false); |
672 | if (rv != I2C_OK) | 672 | if (rv != I2C_OK) |
673 | return rv; | 673 | return rv; |
674 | } | 674 | } |
675 | 675 | ||
676 | rv = hsi2c_prepare_transaction(i2c, chip, len, true, true); | 676 | rv = hsi2c_prepare_transaction(i2c, chip, len, true, true); |
677 | 677 | ||
678 | if (rv != I2C_OK) | 678 | if (rv != I2C_OK) |
679 | return rv; | 679 | return rv; |
680 | 680 | ||
681 | for (i = 0; i < len; i++) { | 681 | for (i = 0; i < len; i++) { |
682 | rv = hsi2c_poll_fifo(i2c, true); | 682 | rv = hsi2c_poll_fifo(i2c, true); |
683 | if (rv != I2C_OK) | 683 | if (rv != I2C_OK) |
684 | goto read_err; | 684 | goto read_err; |
685 | if (drop_data) | 685 | if (drop_data) |
686 | continue; | 686 | continue; |
687 | data[i] = readl(&i2c->usi_rxdata); | 687 | data[i] = readl(&i2c->usi_rxdata); |
688 | } | 688 | } |
689 | 689 | ||
690 | rv = hsi2c_wait_for_trx(i2c); | 690 | rv = hsi2c_wait_for_trx(i2c); |
691 | 691 | ||
692 | read_err: | 692 | read_err: |
693 | tmp_ret = hsi2c_wait_while_busy(i2c); | 693 | tmp_ret = hsi2c_wait_while_busy(i2c); |
694 | if (rv == I2C_OK) | 694 | if (rv == I2C_OK) |
695 | rv = tmp_ret; | 695 | rv = tmp_ret; |
696 | 696 | ||
697 | writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */ | 697 | writel(HSI2C_FUNC_MODE_I2C, &i2c->usi_ctl); /* done */ |
698 | return rv; | 698 | return rv; |
699 | } | 699 | } |
700 | 700 | ||
701 | static unsigned int s3c24x0_i2c_set_bus_speed(struct i2c_adapter *adap, | 701 | static unsigned int s3c24x0_i2c_set_bus_speed(struct i2c_adapter *adap, |
702 | unsigned int speed) | 702 | unsigned int speed) |
703 | { | 703 | { |
704 | struct s3c24x0_i2c_bus *i2c_bus; | 704 | struct s3c24x0_i2c_bus *i2c_bus; |
705 | 705 | ||
706 | i2c_bus = get_bus(adap->hwadapnr); | 706 | i2c_bus = get_bus(adap->hwadapnr); |
707 | if (!i2c_bus) | 707 | if (!i2c_bus) |
708 | return -1; | 708 | return -1; |
709 | 709 | ||
710 | i2c_bus->clock_frequency = speed; | 710 | i2c_bus->clock_frequency = speed; |
711 | 711 | ||
712 | if (i2c_bus->is_highspeed) { | 712 | if (i2c_bus->is_highspeed) { |
713 | if (hsi2c_get_clk_details(i2c_bus)) | 713 | if (hsi2c_get_clk_details(i2c_bus)) |
714 | return -1; | 714 | return -1; |
715 | hsi2c_ch_init(i2c_bus); | 715 | hsi2c_ch_init(i2c_bus); |
716 | } else { | 716 | } else { |
717 | i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, | 717 | i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, |
718 | CONFIG_SYS_I2C_S3C24X0_SLAVE); | 718 | CONFIG_SYS_I2C_S3C24X0_SLAVE); |
719 | } | 719 | } |
720 | 720 | ||
721 | return 0; | 721 | return 0; |
722 | } | 722 | } |
723 | 723 | ||
724 | #ifdef CONFIG_EXYNOS5 | ||
725 | static void exynos_i2c_init(struct i2c_adapter *adap, int speed, int slaveaddr) | ||
726 | { | ||
727 | /* This will override the speed selected in the fdt for that port */ | ||
728 | debug("i2c_init(speed=%u, slaveaddr=0x%x)\n", speed, slaveaddr); | ||
729 | if (i2c_set_bus_speed(speed)) | ||
730 | printf("i2c_init: failed to init bus %d for speed = %d\n", | ||
731 | adap->hwadapnr, speed); | ||
732 | } | ||
733 | #endif | ||
734 | |||
724 | /* | 735 | /* |
725 | * cmd_type is 0 for write, 1 for read. | 736 | * cmd_type is 0 for write, 1 for read. |
726 | * | 737 | * |
727 | * addr_len can take any value from 0-255, it is only limited | 738 | * addr_len can take any value from 0-255, it is only limited |
728 | * by the char, we could make it larger if needed. If it is | 739 | * by the char, we could make it larger if needed. If it is |
729 | * 0 we skip the address write cycle. | 740 | * 0 we skip the address write cycle. |
730 | */ | 741 | */ |
731 | static int i2c_transfer(struct s3c24x0_i2c *i2c, | 742 | static int i2c_transfer(struct s3c24x0_i2c *i2c, |
732 | unsigned char cmd_type, | 743 | unsigned char cmd_type, |
733 | unsigned char chip, | 744 | unsigned char chip, |
734 | unsigned char addr[], | 745 | unsigned char addr[], |
735 | unsigned char addr_len, | 746 | unsigned char addr_len, |
736 | unsigned char data[], | 747 | unsigned char data[], |
737 | unsigned short data_len) | 748 | unsigned short data_len) |
738 | { | 749 | { |
739 | int i = 0, result; | 750 | int i = 0, result; |
740 | ulong start_time = get_timer(0); | 751 | ulong start_time = get_timer(0); |
741 | 752 | ||
742 | if (data == 0 || data_len == 0) { | 753 | if (data == 0 || data_len == 0) { |
743 | /*Don't support data transfer of no length or to address 0 */ | 754 | /*Don't support data transfer of no length or to address 0 */ |
744 | debug("i2c_transfer: bad call\n"); | 755 | debug("i2c_transfer: bad call\n"); |
745 | return I2C_NOK; | 756 | return I2C_NOK; |
746 | } | 757 | } |
747 | 758 | ||
748 | while (readl(&i2c->iicstat) & I2CSTAT_BSY) { | 759 | while (readl(&i2c->iicstat) & I2CSTAT_BSY) { |
749 | if (get_timer(start_time) > I2C_TIMEOUT_MS) | 760 | if (get_timer(start_time) > I2C_TIMEOUT_MS) |
750 | return I2C_NOK_TOUT; | 761 | return I2C_NOK_TOUT; |
751 | } | 762 | } |
752 | 763 | ||
753 | writel(readl(&i2c->iiccon) | I2CCON_ACKGEN, &i2c->iiccon); | 764 | writel(readl(&i2c->iiccon) | I2CCON_ACKGEN, &i2c->iiccon); |
754 | 765 | ||
755 | /* Get the slave chip address going */ | 766 | /* Get the slave chip address going */ |
756 | writel(chip, &i2c->iicds); | 767 | writel(chip, &i2c->iicds); |
757 | if ((cmd_type == I2C_WRITE) || (addr && addr_len)) | 768 | if ((cmd_type == I2C_WRITE) || (addr && addr_len)) |
758 | writel(I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP, | 769 | writel(I2C_MODE_MT | I2C_TXRX_ENA | I2C_START_STOP, |
759 | &i2c->iicstat); | 770 | &i2c->iicstat); |
760 | else | 771 | else |
761 | writel(I2C_MODE_MR | I2C_TXRX_ENA | I2C_START_STOP, | 772 | writel(I2C_MODE_MR | I2C_TXRX_ENA | I2C_START_STOP, |
762 | &i2c->iicstat); | 773 | &i2c->iicstat); |
763 | 774 | ||
764 | /* Wait for chip address to transmit. */ | 775 | /* Wait for chip address to transmit. */ |
765 | result = WaitForXfer(i2c); | 776 | result = WaitForXfer(i2c); |
766 | if (result != I2C_OK) | 777 | if (result != I2C_OK) |
767 | goto bailout; | 778 | goto bailout; |
768 | 779 | ||
769 | /* If register address needs to be transmitted - do it now. */ | 780 | /* If register address needs to be transmitted - do it now. */ |
770 | if (addr && addr_len) { | 781 | if (addr && addr_len) { |
771 | while ((i < addr_len) && (result == I2C_OK)) { | 782 | while ((i < addr_len) && (result == I2C_OK)) { |
772 | writel(addr[i++], &i2c->iicds); | 783 | writel(addr[i++], &i2c->iicds); |
773 | ReadWriteByte(i2c); | 784 | ReadWriteByte(i2c); |
774 | result = WaitForXfer(i2c); | 785 | result = WaitForXfer(i2c); |
775 | } | 786 | } |
776 | i = 0; | 787 | i = 0; |
777 | if (result != I2C_OK) | 788 | if (result != I2C_OK) |
778 | goto bailout; | 789 | goto bailout; |
779 | } | 790 | } |
780 | 791 | ||
781 | switch (cmd_type) { | 792 | switch (cmd_type) { |
782 | case I2C_WRITE: | 793 | case I2C_WRITE: |
783 | while ((i < data_len) && (result == I2C_OK)) { | 794 | while ((i < data_len) && (result == I2C_OK)) { |
784 | writel(data[i++], &i2c->iicds); | 795 | writel(data[i++], &i2c->iicds); |
785 | ReadWriteByte(i2c); | 796 | ReadWriteByte(i2c); |
786 | result = WaitForXfer(i2c); | 797 | result = WaitForXfer(i2c); |
787 | } | 798 | } |
788 | break; | 799 | break; |
789 | 800 | ||
790 | case I2C_READ: | 801 | case I2C_READ: |
791 | if (addr && addr_len) { | 802 | if (addr && addr_len) { |
792 | /* | 803 | /* |
793 | * Register address has been sent, now send slave chip | 804 | * Register address has been sent, now send slave chip |
794 | * address again to start the actual read transaction. | 805 | * address again to start the actual read transaction. |
795 | */ | 806 | */ |
796 | writel(chip, &i2c->iicds); | 807 | writel(chip, &i2c->iicds); |
797 | 808 | ||
798 | /* Generate a re-START. */ | 809 | /* Generate a re-START. */ |
799 | writel(I2C_MODE_MR | I2C_TXRX_ENA | I2C_START_STOP, | 810 | writel(I2C_MODE_MR | I2C_TXRX_ENA | I2C_START_STOP, |
800 | &i2c->iicstat); | 811 | &i2c->iicstat); |
801 | ReadWriteByte(i2c); | 812 | ReadWriteByte(i2c); |
802 | result = WaitForXfer(i2c); | 813 | result = WaitForXfer(i2c); |
803 | 814 | ||
804 | if (result != I2C_OK) | 815 | if (result != I2C_OK) |
805 | goto bailout; | 816 | goto bailout; |
806 | } | 817 | } |
807 | 818 | ||
808 | while ((i < data_len) && (result == I2C_OK)) { | 819 | while ((i < data_len) && (result == I2C_OK)) { |
809 | /* disable ACK for final READ */ | 820 | /* disable ACK for final READ */ |
810 | if (i == data_len - 1) | 821 | if (i == data_len - 1) |
811 | writel(readl(&i2c->iiccon) | 822 | writel(readl(&i2c->iiccon) |
812 | & ~I2CCON_ACKGEN, | 823 | & ~I2CCON_ACKGEN, |
813 | &i2c->iiccon); | 824 | &i2c->iiccon); |
814 | ReadWriteByte(i2c); | 825 | ReadWriteByte(i2c); |
815 | result = WaitForXfer(i2c); | 826 | result = WaitForXfer(i2c); |
816 | data[i++] = readl(&i2c->iicds); | 827 | data[i++] = readl(&i2c->iicds); |
817 | } | 828 | } |
818 | if (result == I2C_NACK) | 829 | if (result == I2C_NACK) |
819 | result = I2C_OK; /* Normal terminated read. */ | 830 | result = I2C_OK; /* Normal terminated read. */ |
820 | break; | 831 | break; |
821 | 832 | ||
822 | default: | 833 | default: |
823 | debug("i2c_transfer: bad call\n"); | 834 | debug("i2c_transfer: bad call\n"); |
824 | result = I2C_NOK; | 835 | result = I2C_NOK; |
825 | break; | 836 | break; |
826 | } | 837 | } |
827 | 838 | ||
828 | bailout: | 839 | bailout: |
829 | /* Send STOP. */ | 840 | /* Send STOP. */ |
830 | writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat); | 841 | writel(I2C_MODE_MR | I2C_TXRX_ENA, &i2c->iicstat); |
831 | ReadWriteByte(i2c); | 842 | ReadWriteByte(i2c); |
832 | 843 | ||
833 | return result; | 844 | return result; |
834 | } | 845 | } |
835 | 846 | ||
836 | static int s3c24x0_i2c_probe(struct i2c_adapter *adap, uchar chip) | 847 | static int s3c24x0_i2c_probe(struct i2c_adapter *adap, uchar chip) |
837 | { | 848 | { |
838 | struct s3c24x0_i2c_bus *i2c_bus; | 849 | struct s3c24x0_i2c_bus *i2c_bus; |
839 | uchar buf[1]; | 850 | uchar buf[1]; |
840 | int ret; | 851 | int ret; |
841 | 852 | ||
842 | i2c_bus = get_bus(adap->hwadapnr); | 853 | i2c_bus = get_bus(adap->hwadapnr); |
843 | if (!i2c_bus) | 854 | if (!i2c_bus) |
844 | return -1; | 855 | return -1; |
845 | buf[0] = 0; | 856 | buf[0] = 0; |
846 | 857 | ||
847 | /* | 858 | /* |
848 | * What is needed is to send the chip address and verify that the | 859 | * What is needed is to send the chip address and verify that the |
849 | * address was <ACK>ed (i.e. there was a chip at that address which | 860 | * address was <ACK>ed (i.e. there was a chip at that address which |
850 | * drove the data line low). | 861 | * drove the data line low). |
851 | */ | 862 | */ |
852 | if (i2c_bus->is_highspeed) { | 863 | if (i2c_bus->is_highspeed) { |
853 | ret = hsi2c_read(i2c_bus->hsregs, | 864 | ret = hsi2c_read(i2c_bus->hsregs, |
854 | chip, 0, 0, buf, 1); | 865 | chip, 0, 0, buf, 1); |
855 | } else { | 866 | } else { |
856 | ret = i2c_transfer(i2c_bus->regs, | 867 | ret = i2c_transfer(i2c_bus->regs, |
857 | I2C_READ, chip << 1, 0, 0, buf, 1); | 868 | I2C_READ, chip << 1, 0, 0, buf, 1); |
858 | } | 869 | } |
859 | 870 | ||
860 | return ret != I2C_OK; | 871 | return ret != I2C_OK; |
861 | } | 872 | } |
862 | 873 | ||
863 | static int s3c24x0_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, | 874 | static int s3c24x0_i2c_read(struct i2c_adapter *adap, uchar chip, uint addr, |
864 | int alen, uchar *buffer, int len) | 875 | int alen, uchar *buffer, int len) |
865 | { | 876 | { |
866 | struct s3c24x0_i2c_bus *i2c_bus; | 877 | struct s3c24x0_i2c_bus *i2c_bus; |
867 | uchar xaddr[4]; | 878 | uchar xaddr[4]; |
868 | int ret; | 879 | int ret; |
869 | 880 | ||
870 | if (alen > 4) { | 881 | if (alen > 4) { |
871 | debug("I2C read: addr len %d not supported\n", alen); | 882 | debug("I2C read: addr len %d not supported\n", alen); |
872 | return 1; | 883 | return 1; |
873 | } | 884 | } |
874 | 885 | ||
875 | if (alen > 0) { | 886 | if (alen > 0) { |
876 | xaddr[0] = (addr >> 24) & 0xFF; | 887 | xaddr[0] = (addr >> 24) & 0xFF; |
877 | xaddr[1] = (addr >> 16) & 0xFF; | 888 | xaddr[1] = (addr >> 16) & 0xFF; |
878 | xaddr[2] = (addr >> 8) & 0xFF; | 889 | xaddr[2] = (addr >> 8) & 0xFF; |
879 | xaddr[3] = addr & 0xFF; | 890 | xaddr[3] = addr & 0xFF; |
880 | } | 891 | } |
881 | 892 | ||
882 | #ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW | 893 | #ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW |
883 | /* | 894 | /* |
884 | * EEPROM chips that implement "address overflow" are ones | 895 | * EEPROM chips that implement "address overflow" are ones |
885 | * like Catalyst 24WC04/08/16 which has 9/10/11 bits of | 896 | * like Catalyst 24WC04/08/16 which has 9/10/11 bits of |
886 | * address and the extra bits end up in the "chip address" | 897 | * address and the extra bits end up in the "chip address" |
887 | * bit slots. This makes a 24WC08 (1Kbyte) chip look like | 898 | * bit slots. This makes a 24WC08 (1Kbyte) chip look like |
888 | * four 256 byte chips. | 899 | * four 256 byte chips. |
889 | * | 900 | * |
890 | * Note that we consider the length of the address field to | 901 | * Note that we consider the length of the address field to |
891 | * still be one byte because the extra address bits are | 902 | * still be one byte because the extra address bits are |
892 | * hidden in the chip address. | 903 | * hidden in the chip address. |
893 | */ | 904 | */ |
894 | if (alen > 0) | 905 | if (alen > 0) |
895 | chip |= ((addr >> (alen * 8)) & | 906 | chip |= ((addr >> (alen * 8)) & |
896 | CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); | 907 | CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); |
897 | #endif | 908 | #endif |
898 | i2c_bus = get_bus(adap->hwadapnr); | 909 | i2c_bus = get_bus(adap->hwadapnr); |
899 | if (!i2c_bus) | 910 | if (!i2c_bus) |
900 | return -1; | 911 | return -1; |
901 | 912 | ||
902 | if (i2c_bus->is_highspeed) | 913 | if (i2c_bus->is_highspeed) |
903 | ret = hsi2c_read(i2c_bus->hsregs, chip, &xaddr[4 - alen], | 914 | ret = hsi2c_read(i2c_bus->hsregs, chip, &xaddr[4 - alen], |
904 | alen, buffer, len); | 915 | alen, buffer, len); |
905 | else | 916 | else |
906 | ret = i2c_transfer(i2c_bus->regs, I2C_READ, chip << 1, | 917 | ret = i2c_transfer(i2c_bus->regs, I2C_READ, chip << 1, |
907 | &xaddr[4 - alen], alen, buffer, len); | 918 | &xaddr[4 - alen], alen, buffer, len); |
908 | 919 | ||
909 | if (ret) { | 920 | if (ret) { |
910 | if (i2c_bus->is_highspeed) | 921 | if (i2c_bus->is_highspeed) |
911 | exynos5_i2c_reset(i2c_bus); | 922 | exynos5_i2c_reset(i2c_bus); |
912 | debug("I2c read failed %d\n", ret); | 923 | debug("I2c read failed %d\n", ret); |
913 | return 1; | 924 | return 1; |
914 | } | 925 | } |
915 | return 0; | 926 | return 0; |
916 | } | 927 | } |
917 | 928 | ||
918 | static int s3c24x0_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, | 929 | static int s3c24x0_i2c_write(struct i2c_adapter *adap, uchar chip, uint addr, |
919 | int alen, uchar *buffer, int len) | 930 | int alen, uchar *buffer, int len) |
920 | { | 931 | { |
921 | struct s3c24x0_i2c_bus *i2c_bus; | 932 | struct s3c24x0_i2c_bus *i2c_bus; |
922 | uchar xaddr[4]; | 933 | uchar xaddr[4]; |
923 | int ret; | 934 | int ret; |
924 | 935 | ||
925 | if (alen > 4) { | 936 | if (alen > 4) { |
926 | debug("I2C write: addr len %d not supported\n", alen); | 937 | debug("I2C write: addr len %d not supported\n", alen); |
927 | return 1; | 938 | return 1; |
928 | } | 939 | } |
929 | 940 | ||
930 | if (alen > 0) { | 941 | if (alen > 0) { |
931 | xaddr[0] = (addr >> 24) & 0xFF; | 942 | xaddr[0] = (addr >> 24) & 0xFF; |
932 | xaddr[1] = (addr >> 16) & 0xFF; | 943 | xaddr[1] = (addr >> 16) & 0xFF; |
933 | xaddr[2] = (addr >> 8) & 0xFF; | 944 | xaddr[2] = (addr >> 8) & 0xFF; |
934 | xaddr[3] = addr & 0xFF; | 945 | xaddr[3] = addr & 0xFF; |
935 | } | 946 | } |
936 | #ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW | 947 | #ifdef CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW |
937 | /* | 948 | /* |
938 | * EEPROM chips that implement "address overflow" are ones | 949 | * EEPROM chips that implement "address overflow" are ones |
939 | * like Catalyst 24WC04/08/16 which has 9/10/11 bits of | 950 | * like Catalyst 24WC04/08/16 which has 9/10/11 bits of |
940 | * address and the extra bits end up in the "chip address" | 951 | * address and the extra bits end up in the "chip address" |
941 | * bit slots. This makes a 24WC08 (1Kbyte) chip look like | 952 | * bit slots. This makes a 24WC08 (1Kbyte) chip look like |
942 | * four 256 byte chips. | 953 | * four 256 byte chips. |
943 | * | 954 | * |
944 | * Note that we consider the length of the address field to | 955 | * Note that we consider the length of the address field to |
945 | * still be one byte because the extra address bits are | 956 | * still be one byte because the extra address bits are |
946 | * hidden in the chip address. | 957 | * hidden in the chip address. |
947 | */ | 958 | */ |
948 | if (alen > 0) | 959 | if (alen > 0) |
949 | chip |= ((addr >> (alen * 8)) & | 960 | chip |= ((addr >> (alen * 8)) & |
950 | CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); | 961 | CONFIG_SYS_I2C_EEPROM_ADDR_OVERFLOW); |
951 | #endif | 962 | #endif |
952 | i2c_bus = get_bus(adap->hwadapnr); | 963 | i2c_bus = get_bus(adap->hwadapnr); |
953 | if (!i2c_bus) | 964 | if (!i2c_bus) |
954 | return -1; | 965 | return -1; |
955 | 966 | ||
956 | if (i2c_bus->is_highspeed) | 967 | if (i2c_bus->is_highspeed) |
957 | ret = hsi2c_write(i2c_bus->hsregs, chip, &xaddr[4 - alen], | 968 | ret = hsi2c_write(i2c_bus->hsregs, chip, &xaddr[4 - alen], |
958 | alen, buffer, len, true); | 969 | alen, buffer, len, true); |
959 | else | 970 | else |
960 | ret = i2c_transfer(i2c_bus->regs, I2C_WRITE, chip << 1, | 971 | ret = i2c_transfer(i2c_bus->regs, I2C_WRITE, chip << 1, |
961 | &xaddr[4 - alen], alen, buffer, len); | 972 | &xaddr[4 - alen], alen, buffer, len); |
962 | 973 | ||
963 | if (ret != 0) { | 974 | if (ret != 0) { |
964 | if (i2c_bus->is_highspeed) | 975 | if (i2c_bus->is_highspeed) |
965 | exynos5_i2c_reset(i2c_bus); | 976 | exynos5_i2c_reset(i2c_bus); |
966 | return 1; | 977 | return 1; |
967 | } else { | 978 | } else { |
968 | return 0; | 979 | return 0; |
969 | } | 980 | } |
970 | } | 981 | } |
971 | 982 | ||
972 | #ifdef CONFIG_OF_CONTROL | 983 | #ifdef CONFIG_OF_CONTROL |
973 | static void process_nodes(const void *blob, int node_list[], int count, | 984 | static void process_nodes(const void *blob, int node_list[], int count, |
974 | int is_highspeed) | 985 | int is_highspeed) |
975 | { | 986 | { |
976 | struct s3c24x0_i2c_bus *bus; | 987 | struct s3c24x0_i2c_bus *bus; |
977 | int i; | 988 | int i; |
978 | 989 | ||
979 | for (i = 0; i < count; i++) { | 990 | for (i = 0; i < count; i++) { |
980 | int node = node_list[i]; | 991 | int node = node_list[i]; |
981 | 992 | ||
982 | if (node <= 0) | 993 | if (node <= 0) |
983 | continue; | 994 | continue; |
984 | 995 | ||
985 | bus = &i2c_bus[i]; | 996 | bus = &i2c_bus[i]; |
986 | bus->active = true; | 997 | bus->active = true; |
987 | bus->is_highspeed = is_highspeed; | 998 | bus->is_highspeed = is_highspeed; |
988 | 999 | ||
989 | if (is_highspeed) | 1000 | if (is_highspeed) |
990 | bus->hsregs = (struct exynos5_hsi2c *) | 1001 | bus->hsregs = (struct exynos5_hsi2c *) |
991 | fdtdec_get_addr(blob, node, "reg"); | 1002 | fdtdec_get_addr(blob, node, "reg"); |
992 | else | 1003 | else |
993 | bus->regs = (struct s3c24x0_i2c *) | 1004 | bus->regs = (struct s3c24x0_i2c *) |
994 | fdtdec_get_addr(blob, node, "reg"); | 1005 | fdtdec_get_addr(blob, node, "reg"); |
995 | 1006 | ||
996 | bus->id = pinmux_decode_periph_id(blob, node); | 1007 | bus->id = pinmux_decode_periph_id(blob, node); |
997 | bus->clock_frequency = fdtdec_get_int(blob, node, | 1008 | bus->clock_frequency = fdtdec_get_int(blob, node, |
998 | "clock-frequency", | 1009 | "clock-frequency", |
999 | CONFIG_SYS_I2C_S3C24X0_SPEED); | 1010 | CONFIG_SYS_I2C_S3C24X0_SPEED); |
1000 | bus->node = node; | 1011 | bus->node = node; |
1001 | bus->bus_num = i; | 1012 | bus->bus_num = i; |
1002 | exynos_pinmux_config(bus->id, 0); | 1013 | exynos_pinmux_config(bus->id, 0); |
1003 | 1014 | ||
1004 | /* Mark position as used */ | 1015 | /* Mark position as used */ |
1005 | node_list[i] = -1; | 1016 | node_list[i] = -1; |
1006 | } | 1017 | } |
1007 | } | 1018 | } |
1008 | 1019 | ||
1009 | void board_i2c_init(const void *blob) | 1020 | void board_i2c_init(const void *blob) |
1010 | { | 1021 | { |
1011 | int node_list[CONFIG_MAX_I2C_NUM]; | 1022 | int node_list[CONFIG_MAX_I2C_NUM]; |
1012 | int count; | 1023 | int count; |
1013 | 1024 | ||
1014 | /* First get the normal i2c ports */ | 1025 | /* First get the normal i2c ports */ |
1015 | count = fdtdec_find_aliases_for_id(blob, "i2c", | 1026 | count = fdtdec_find_aliases_for_id(blob, "i2c", |
1016 | COMPAT_SAMSUNG_S3C2440_I2C, node_list, | 1027 | COMPAT_SAMSUNG_S3C2440_I2C, node_list, |
1017 | CONFIG_MAX_I2C_NUM); | 1028 | CONFIG_MAX_I2C_NUM); |
1018 | process_nodes(blob, node_list, count, 0); | 1029 | process_nodes(blob, node_list, count, 0); |
1019 | 1030 | ||
1020 | /* Now look for high speed i2c ports */ | 1031 | /* Now look for high speed i2c ports */ |
1021 | count = fdtdec_find_aliases_for_id(blob, "i2c", | 1032 | count = fdtdec_find_aliases_for_id(blob, "i2c", |
1022 | COMPAT_SAMSUNG_EXYNOS5_I2C, node_list, | 1033 | COMPAT_SAMSUNG_EXYNOS5_I2C, node_list, |
1023 | CONFIG_MAX_I2C_NUM); | 1034 | CONFIG_MAX_I2C_NUM); |
1024 | process_nodes(blob, node_list, count, 1); | 1035 | process_nodes(blob, node_list, count, 1); |
1025 | 1036 | ||
1026 | } | 1037 | } |
1027 | 1038 | ||
1028 | int i2c_get_bus_num_fdt(int node) | 1039 | int i2c_get_bus_num_fdt(int node) |
1029 | { | 1040 | { |
1030 | int i; | 1041 | int i; |
1031 | 1042 | ||
1032 | for (i = 0; i < ARRAY_SIZE(i2c_bus); i++) { | 1043 | for (i = 0; i < ARRAY_SIZE(i2c_bus); i++) { |
1033 | if (node == i2c_bus[i].node) | 1044 | if (node == i2c_bus[i].node) |
1034 | return i; | 1045 | return i; |
1035 | } | 1046 | } |
1036 | 1047 | ||
1037 | debug("%s: Can't find any matched I2C bus\n", __func__); | 1048 | debug("%s: Can't find any matched I2C bus\n", __func__); |
1038 | return -1; | 1049 | return -1; |
1039 | } | 1050 | } |
1040 | 1051 | ||
1041 | int i2c_reset_port_fdt(const void *blob, int node) | 1052 | int i2c_reset_port_fdt(const void *blob, int node) |
1042 | { | 1053 | { |
1043 | struct s3c24x0_i2c_bus *i2c_bus; | 1054 | struct s3c24x0_i2c_bus *i2c_bus; |
1044 | int bus; | 1055 | int bus; |
1045 | 1056 | ||
1046 | bus = i2c_get_bus_num_fdt(node); | 1057 | bus = i2c_get_bus_num_fdt(node); |
1047 | if (bus < 0) { | 1058 | if (bus < 0) { |
1048 | debug("could not get bus for node %d\n", node); | 1059 | debug("could not get bus for node %d\n", node); |
1049 | return -1; | 1060 | return -1; |
1050 | } | 1061 | } |
1051 | 1062 | ||
1052 | i2c_bus = get_bus(bus); | 1063 | i2c_bus = get_bus(bus); |
1053 | if (!i2c_bus) { | 1064 | if (!i2c_bus) { |
1054 | debug("get_bus() failed for node node %d\n", node); | 1065 | debug("get_bus() failed for node node %d\n", node); |
1055 | return -1; | 1066 | return -1; |
1056 | } | 1067 | } |
1057 | 1068 | ||
1058 | if (i2c_bus->is_highspeed) { | 1069 | if (i2c_bus->is_highspeed) { |
1059 | if (hsi2c_get_clk_details(i2c_bus)) | 1070 | if (hsi2c_get_clk_details(i2c_bus)) |
1060 | return -1; | 1071 | return -1; |
1061 | hsi2c_ch_init(i2c_bus); | 1072 | hsi2c_ch_init(i2c_bus); |
1062 | } else { | 1073 | } else { |
1063 | i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, | 1074 | i2c_ch_init(i2c_bus->regs, i2c_bus->clock_frequency, |
1064 | CONFIG_SYS_I2C_S3C24X0_SLAVE); | 1075 | CONFIG_SYS_I2C_S3C24X0_SLAVE); |
1065 | } | 1076 | } |
1066 | 1077 | ||
1067 | return 0; | 1078 | return 0; |
1068 | } | 1079 | } |
1069 | #endif | 1080 | #endif |
1070 | 1081 | ||
1071 | /* | 1082 | /* |
1072 | * Register s3c24x0 i2c adapters | 1083 | * Register s3c24x0 i2c adapters |
1073 | */ | 1084 | */ |
1074 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_0, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1085 | #if defined(CONFIG_EXYNOS5420) |
1075 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1086 | U_BOOT_I2C_ADAP_COMPLETE(i2c00, s3c24x0_i2c_init, s3c24x0_i2c_probe, |
1076 | s3c24x0_i2c_set_bus_speed, | 1087 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1077 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1088 | s3c24x0_i2c_set_bus_speed, |
1078 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1089 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1079 | 0) | 1090 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) |
1080 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_1, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1091 | U_BOOT_I2C_ADAP_COMPLETE(i2c01, s3c24x0_i2c_init, s3c24x0_i2c_probe, |
1081 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1092 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1082 | s3c24x0_i2c_set_bus_speed, | 1093 | s3c24x0_i2c_set_bus_speed, |
1083 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1094 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1084 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1095 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 1) |
1085 | 1) | 1096 | U_BOOT_I2C_ADAP_COMPLETE(i2c02, s3c24x0_i2c_init, s3c24x0_i2c_probe, |
1086 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_2, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1097 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1087 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1098 | s3c24x0_i2c_set_bus_speed, |
1088 | s3c24x0_i2c_set_bus_speed, | 1099 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1089 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1100 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 2) |
1090 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1101 | U_BOOT_I2C_ADAP_COMPLETE(i2c03, exynos_i2c_init, s3c24x0_i2c_probe, |
1091 | 2) | 1102 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1092 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_3, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1103 | s3c24x0_i2c_set_bus_speed, |
1093 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1104 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1094 | s3c24x0_i2c_set_bus_speed, | 1105 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 3) |
1095 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1106 | U_BOOT_I2C_ADAP_COMPLETE(i2c04, exynos_i2c_init, s3c24x0_i2c_probe, |
1096 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1107 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1097 | 3) | 1108 | s3c24x0_i2c_set_bus_speed, |
1098 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_4, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1109 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1099 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1110 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 4) |
1100 | s3c24x0_i2c_set_bus_speed, | 1111 | U_BOOT_I2C_ADAP_COMPLETE(i2c05, exynos_i2c_init, s3c24x0_i2c_probe, |
1101 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1112 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1102 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1113 | s3c24x0_i2c_set_bus_speed, |
1103 | 4) | 1114 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1104 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_5, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1115 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 5) |
1105 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1116 | U_BOOT_I2C_ADAP_COMPLETE(i2c06, exynos_i2c_init, s3c24x0_i2c_probe, |
1106 | s3c24x0_i2c_set_bus_speed, | 1117 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1107 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1118 | s3c24x0_i2c_set_bus_speed, |
1108 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1119 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1109 | 5) | 1120 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 6) |
1110 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_6, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1121 | U_BOOT_I2C_ADAP_COMPLETE(i2c07, exynos_i2c_init, s3c24x0_i2c_probe, |
1111 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1122 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1112 | s3c24x0_i2c_set_bus_speed, | 1123 | s3c24x0_i2c_set_bus_speed, |
1113 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1124 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1114 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1125 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 7) |
1115 | 6) | 1126 | U_BOOT_I2C_ADAP_COMPLETE(i2c08, exynos_i2c_init, s3c24x0_i2c_probe, |
1116 | U_BOOT_I2C_ADAP_COMPLETE(s3c24x0_7, s3c24x0_i2c_init, s3c24x0_i2c_probe, | 1127 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1117 | s3c24x0_i2c_read, s3c24x0_i2c_write, | 1128 | s3c24x0_i2c_set_bus_speed, |
1118 | s3c24x0_i2c_set_bus_speed, | 1129 | CONFIG_SYS_I2C_S3C24X0_SPEED, |
1119 | CONFIG_SYS_I2C_S3C24X0_SPEED, | 1130 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 8) |
1120 | CONFIG_SYS_I2C_S3C24X0_SLAVE, | 1131 | U_BOOT_I2C_ADAP_COMPLETE(i2c09, exynos_i2c_init, s3c24x0_i2c_probe, |
1121 | 7) | 1132 | s3c24x0_i2c_read, s3c24x0_i2c_write, |
1133 | s3c24x0_i2c_set_bus_speed, | ||
1134 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1135 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 9) | ||
1136 | U_BOOT_I2C_ADAP_COMPLETE(i2c10, exynos_i2c_init, s3c24x0_i2c_probe, | ||
1137 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1138 | s3c24x0_i2c_set_bus_speed, | ||
1139 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1140 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 10) | ||
1141 | #elif defined(CONFIG_EXYNOS5250) | ||
1142 | U_BOOT_I2C_ADAP_COMPLETE(i2c00, exynos_i2c_init, s3c24x0_i2c_probe, | ||
1143 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1144 | s3c24x0_i2c_set_bus_speed, | ||
1145 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1146 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) | ||
1147 | U_BOOT_I2C_ADAP_COMPLETE(i2c01, exynos_i2c_init, s3c24x0_i2c_probe, | ||
1148 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1149 | s3c24x0_i2c_set_bus_speed, | ||
1150 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1151 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 1) | ||
1152 | U_BOOT_I2C_ADAP_COMPLETE(i2c02, exynos_i2c_init, s3c24x0_i2c_probe, | ||
1153 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1154 | s3c24x0_i2c_set_bus_speed, | ||
1155 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1156 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 2) | ||
1157 | U_BOOT_I2C_ADAP_COMPLETE(i2c03, exynos_i2c_init, s3c24x0_i2c_probe, | ||
1158 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1159 | s3c24x0_i2c_set_bus_speed, | ||
1160 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1161 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 3) | ||
1162 | U_BOOT_I2C_ADAP_COMPLETE(i2c04, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1163 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1164 | s3c24x0_i2c_set_bus_speed, | ||
1165 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1166 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 4) | ||
1167 | U_BOOT_I2C_ADAP_COMPLETE(i2c05, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1168 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1169 | s3c24x0_i2c_set_bus_speed, | ||
1170 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1171 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 5) | ||
1172 | U_BOOT_I2C_ADAP_COMPLETE(i2c06, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1173 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1174 | s3c24x0_i2c_set_bus_speed, | ||
1175 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1176 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 6) | ||
1177 | U_BOOT_I2C_ADAP_COMPLETE(i2c07, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1178 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1179 | s3c24x0_i2c_set_bus_speed, | ||
1180 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1181 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 7) | ||
1182 | U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1183 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1184 | s3c24x0_i2c_set_bus_speed, | ||
1185 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1186 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 8) | ||
1187 | U_BOOT_I2C_ADAP_COMPLETE(i2c09, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1188 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1189 | s3c24x0_i2c_set_bus_speed, | ||
1190 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1191 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 9) | ||
1192 | U_BOOT_I2C_ADAP_COMPLETE(s3c10, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1193 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1194 | s3c24x0_i2c_set_bus_speed, | ||
1195 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1196 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 10) | ||
1197 | #elif defined(CONFIG_EXYNOS4) | ||
1198 | U_BOOT_I2C_ADAP_COMPLETE(i2c00, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1199 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1200 | s3c24x0_i2c_set_bus_speed, | ||
1201 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1202 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) | ||
1203 | U_BOOT_I2C_ADAP_COMPLETE(i2c01, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1204 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1205 | s3c24x0_i2c_set_bus_speed, | ||
1206 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1207 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 1) | ||
1208 | U_BOOT_I2C_ADAP_COMPLETE(i2c02, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1209 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1210 | s3c24x0_i2c_set_bus_speed, | ||
1211 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1212 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 2) | ||
1213 | U_BOOT_I2C_ADAP_COMPLETE(i2c03, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1214 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1215 | s3c24x0_i2c_set_bus_speed, | ||
1216 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1217 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 3) | ||
1218 | U_BOOT_I2C_ADAP_COMPLETE(i2c04, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1219 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1220 | s3c24x0_i2c_set_bus_speed, | ||
1221 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1222 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 4) | ||
1223 | U_BOOT_I2C_ADAP_COMPLETE(i2c05, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1224 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1225 | s3c24x0_i2c_set_bus_speed, | ||
1226 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1227 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 5) | ||
1228 | U_BOOT_I2C_ADAP_COMPLETE(i2c06, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1229 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1230 | s3c24x0_i2c_set_bus_speed, | ||
1231 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1232 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 6) | ||
1233 | U_BOOT_I2C_ADAP_COMPLETE(i2c07, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1234 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1235 | s3c24x0_i2c_set_bus_speed, | ||
1236 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1237 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 7) | ||
1238 | U_BOOT_I2C_ADAP_COMPLETE(i2c08, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1239 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1240 | s3c24x0_i2c_set_bus_speed, | ||
1241 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1242 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 8) | ||
1243 | #else | ||
1244 | U_BOOT_I2C_ADAP_COMPLETE(s3c0, s3c24x0_i2c_init, s3c24x0_i2c_probe, | ||
1245 | s3c24x0_i2c_read, s3c24x0_i2c_write, | ||
1246 | s3c24x0_i2c_set_bus_speed, | ||
1247 | CONFIG_SYS_I2C_S3C24X0_SPEED, | ||
1248 | CONFIG_SYS_I2C_S3C24X0_SLAVE, 0) | ||
1249 | #endif | ||
1122 | 1250 |