|
@@ -0,0 +1,137 @@
|
|
|
+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
|