README.ae250
3.58 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
Andes Technology SoC AE250
===========================
AE250 is the mainline SoC produced by Andes Technology using NX25 CPU core
base on RISC-V architecture.
AE250 has integrated both AHB and APB bus and many periphals for application
and product development.
NX25-AE250
=========
NX25-AE250 is the SoC with AE250 hardcore CPU.
Configurations
==============
CONFIG_SKIP_LOWLEVEL_INIT:
If you want to boot this system from SPI ROM and bypass e-bios (the
other boot loader on ROM). You should undefine CONFIG_SKIP_LOWLEVEL_INIT
in "include/configs/nx25-ae250.h".
Build and boot steps
====================
build:
1. Prepare the toolchains and make sure the $PATH to toolchains is correct.
2. Use `make nx25-ae250_defconfig` in u-boot root to build the image.
Verification
====================
Target
====================
1. startup
2. relocation
3. timer driver
4. uart driver
5. mac driver
6. mmc driver
7. spi driver
Steps
====================
1. Define CONFIG_SKIP_LOWLEVEL_INIT to build u-boot which is loaded via gdb from ram.
2. Undefine CONFIG_SKIP_LOWLEVEL_INIT to build u-boot which is booted from spi rom.
3. Ping a server by mac driver
4. Scan sd card and copy u-boot image which is booted from flash to ram by sd driver.
5. Burn this u-boot image to spi rom by spi driver
6. Re-boot u-boot from spi flash with power off and power on.
Messages
====================
U-Boot 2018.01-rc2-00033-g824f89a (Dec 21 2017 - 16:51:26 +0800)
DRAM: 1 GiB
MMC: mmc@f0e00000: 0
SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
In: serial@f0300000
Out: serial@f0300000
Err: serial@f0300000
Net:
Warning: mac@e0100000 (eth0) using random MAC address - be:dd:d7:e4:e8:10
eth0: mac@e0100000
RISC-V # version
U-Boot 2018.01-rc2-00033-gb265b91-dirty (Dec 22 2017 - 13:54:21 +0800)
riscv32-unknown-linux-gnu-gcc (GCC) 7.2.0
GNU ld (GNU Binutils) 2.29
RISC-V # setenv ipaddr 10.0.4.200 ;
RISC-V # setenv serverip 10.0.4.97 ;
RISC-V # ping 10.0.4.97 ;
Using mac@e0100000 device
host 10.0.4.97 is alive
RISC-V # mmc rescan
RISC-V # fatls mmc 0:1
318907 u-boot-ae250-64.bin
1252 hello_world_ae250_32.bin
328787 u-boot-ae250-32.bin
3 file(s), 0 dir(s)
RISC-V # sf probe 0:0 50000000 0
SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
RISC-V # sf test 0x100000 0x1000
SPI flash test:
0 erase: 36 ticks, 111 KiB/s 0.888 Mbps
1 check: 29 ticks, 137 KiB/s 1.096 Mbps
2 write: 40 ticks, 100 KiB/s 0.800 Mbps
3 read: 20 ticks, 200 KiB/s 1.600 Mbps
Test passed
0 erase: 36 ticks, 111 KiB/s 0.888 Mbps
1 check: 29 ticks, 137 KiB/s 1.096 Mbps
2 write: 40 ticks, 100 KiB/s 0.800 Mbps
3 read: 20 ticks, 200 KiB/s 1.600 Mbps
RISC-V # fatload mmc 0:1 0x600000 u-boot-ae250-32.bin
reading u-boot-ae250-32.bin
328787 bytes read in 324 ms (990.2 KiB/s)
RISC-V # sf erase 0x0 0x51000
SF: 331776 bytes @ 0x0 Erased: OK
RISC-V # sf write 0x600000 0x0 0x50453
device 0 offset 0x0, size 0x50453
SF: 328787 bytes @ 0x0 Written: OK
RISC-V # crc32 0x600000 0x50453
crc32 for 00600000 ... 00650452 ==> 692dc44a
RISC-V # crc32 0x80000000 0x50453
crc32 for 80000000 ... 80050452 ==> 692dc44a
RISC-V #
*** power-off and power-on, this U-Boot is booted from spi flash ***
U-Boot 2018.01-rc2-00032-gf67dd47-dirty (Dec 21 2017 - 13:56:03 +0800)
DRAM: 1 GiB
MMC: mmc@f0e00000: 0
SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
In: serial@f0300000
Out: serial@f0300000
Err: serial@f0300000
Net:
Warning: mac@e0100000 (eth0) using random MAC address - ee:4c:58:29:32:f5
eth0: mac@e0100000
RISC-V #
TODO
====================
Boot bbl and riscv-linux