mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-14 08:57:58 +00:00
3fafced74d
Add documents to describe NX25 and AE250. Also update other documents for RISC-V. Signed-off-by: Rick Chen <rick@andestech.com> Signed-off-by: Rick Chen <rickchen36@gmail.com> Signed-off-by: Greentime Hu <green.hu@gmail.com>
137 lines
3.6 KiB
Text
137 lines
3.6 KiB
Text
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
|