xcep.c
4.55 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
/* linux/arch/arm/mach-pxa/xcep.c
*
* Support for the Iskratel Electronics XCEP platform as used in
* the Libera instruments from Instrumentation Technologies.
*
* Author: Ales Bardorfer <ales@i-tech.si>
* Contributions by: Abbott, MG (Michael) <michael.abbott@diamond.ac.uk>
* Contributions by: Matej Kenda <matej.kenda@i-tech.si>
* Created: June 2006
* Copyright: (C) 2006-2009 Instrumentation Technologies
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/smc91x.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/irq.h>
#include <asm/mach/map.h>
#include <mach/hardware.h>
#include <mach/pxa25x.h>
#include <mach/smemc.h>
#include "generic.h"
#define XCEP_ETH_PHYS (PXA_CS3_PHYS + 0x00000300)
#define XCEP_ETH_PHYS_END (PXA_CS3_PHYS + 0x000fffff)
#define XCEP_ETH_ATTR (PXA_CS3_PHYS + 0x02000000)
#define XCEP_ETH_ATTR_END (PXA_CS3_PHYS + 0x020fffff)
#define XCEP_ETH_IRQ IRQ_GPIO0
/* XCEP CPLD base */
#define XCEP_CPLD_BASE 0xf0000000
/* Flash partitions. */
static struct mtd_partition xcep_partitions[] = {
{
.name = "Bootloader",
.size = 0x00040000,
.offset = 0,
.mask_flags = MTD_WRITEABLE
}, {
.name = "Bootloader ENV",
.size = 0x00040000,
.offset = 0x00040000,
.mask_flags = MTD_WRITEABLE
}, {
.name = "Kernel",
.size = 0x00100000,
.offset = 0x00080000,
}, {
.name = "Rescue fs",
.size = 0x00280000,
.offset = 0x00180000,
}, {
.name = "Filesystem",
.size = MTDPART_SIZ_FULL,
.offset = 0x00400000
}
};
static struct physmap_flash_data xcep_flash_data[] = {
{
.width = 4, /* bankwidth in bytes */
.parts = xcep_partitions,
.nr_parts = ARRAY_SIZE(xcep_partitions)
}
};
static struct resource flash_resource = {
.start = PXA_CS0_PHYS,
.end = PXA_CS0_PHYS + SZ_32M - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = xcep_flash_data,
},
.resource = &flash_resource,
.num_resources = 1,
};
/* SMC LAN91C111 network controller. */
static struct resource smc91x_resources[] = {
[0] = {
.name = "smc91x-regs",
.start = XCEP_ETH_PHYS,
.end = XCEP_ETH_PHYS_END,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = XCEP_ETH_IRQ,
.end = XCEP_ETH_IRQ,
.flags = IORESOURCE_IRQ,
},
[2] = {
.name = "smc91x-attrib",
.start = XCEP_ETH_ATTR,
.end = XCEP_ETH_ATTR_END,
.flags = IORESOURCE_MEM,
},
};
static struct smc91x_platdata xcep_smc91x_info = {
.flags = SMC91X_USE_32BIT | SMC91X_NOWAIT | SMC91X_USE_DMA,
};
static struct platform_device smc91x_device = {
.name = "smc91x",
.id = -1,
.num_resources = ARRAY_SIZE(smc91x_resources),
.resource = smc91x_resources,
.dev = {
.platform_data = &xcep_smc91x_info,
},
};
static struct platform_device *devices[] __initdata = {
&flash_device,
&smc91x_device,
};
/* We have to state that there are HWMON devices on the I2C bus on XCEP.
* Drivers for HWMON verify capabilities of the adapter when loading and
* refuse to attach if the adapter doesn't support HWMON class of devices. */
static struct i2c_pxa_platform_data xcep_i2c_platform_data = {
.class = I2C_CLASS_HWMON
};
static mfp_cfg_t xcep_pin_config[] __initdata = {
GPIO79_nCS_3, /* SMC 91C111 chip select. */
GPIO80_nCS_4, /* CPLD chip select. */
/* SSP communication to MSP430 */
GPIO23_SSP1_SCLK,
GPIO24_SSP1_SFRM,
GPIO25_SSP1_TXD,
GPIO26_SSP1_RXD,
GPIO27_SSP1_EXTCLK
};
static void __init xcep_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(xcep_pin_config));
pxa_set_ffuart_info(NULL);
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
pxa_set_hwuart_info(NULL);
/* See Intel XScale Developer's Guide for details */
/* Set RDF and RDN to appropriate values (chip select 3 (smc91x)) */
__raw_writel((__raw_readl(MSC1) & 0xffff) | 0xD5540000, MSC1);
/* Set RDF and RDN to appropriate values (chip select 5 (fpga)) */
__raw_writel((__raw_readl(MSC2) & 0xffff) | 0x72A00000, MSC2);
platform_add_devices(ARRAY_AND_SIZE(devices));
pxa_set_i2c_info(&xcep_i2c_platform_data);
}
MACHINE_START(XCEP, "Iskratel XCEP")
.atag_offset = 0x100,
.init_machine = xcep_init,
.map_io = pxa25x_map_io,
.init_irq = pxa25x_init_irq,
.handle_irq = pxa25x_handle_irq,
.timer = &pxa_timer,
.restart = pxa_restart,
MACHINE_END