doc/README.ae250

   1 Andes Technology SoC AE250
   2 ===========================
   3
   4 AE250 is the mainline SoC produced by Andes Technology using NX25 CPU core
   5 base on RISC-V architecture.
   6
   7 AE250 has integrated both AHB and APB bus and many periphals for application
   8 and product development.
   9
  10 NX25-AE250
  11 =========
  12
  13 NX25-AE250 is the SoC with AE250 hardcore CPU.
  14
  15 Configurations
  16 ==============
  17
  18 CONFIG_SKIP_LOWLEVEL_INIT:
  19         If you want to boot this system from SPI ROM and bypass e-bios (the
  20         other boot loader on ROM). You should undefine CONFIG_SKIP_LOWLEVEL_INIT
  21         in "include/configs/nx25-ae250.h".
  22
  23 Build and boot steps
  24 ====================
  25
  26 build:
  27 1. Prepare the toolchains and make sure the $PATH to toolchains is correct.
  28 2. Use `make nx25-ae250_defconfig` in u-boot root to build the image.
  29
  30 Verification
  31 ====================
  32
  33 Target
  34 ====================
  35 1. startup
  36 2. relocation
  37 3. timer driver
  38 4. uart driver
  39 5. mac driver
  40 6. mmc driver
  41 7. spi driver
  42
  43 Steps
  44 ====================
  45 1. Define CONFIG_SKIP_LOWLEVEL_INIT to build u-boot which is loaded via gdb from ram.
  46 2. Undefine CONFIG_SKIP_LOWLEVEL_INIT to build u-boot which is booted from spi rom.
  47 3. Ping a server by mac driver
  48 4. Scan sd card and copy u-boot image which is booted from flash to ram by sd driver.
  49 5. Burn this u-boot image to spi rom by spi driver
  50 6. Re-boot u-boot from spi flash with power off and power on.
  51
  52 Messages
  53 ====================
  54 U-Boot 2018.01-rc2-00033-g824f89a (Dec 21 2017 - 16:51:26 +0800)
  55
  56 DRAM:  1 GiB
  57 MMC:   mmc@f0e00000: 0
  58 SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
  59 In:    serial@f0300000
  60 Out:   serial@f0300000
  61 Err:   serial@f0300000
  62 Net:
  63 Warning: mac@e0100000 (eth0) using random MAC address - be:dd:d7:e4:e8:10
  64 eth0: mac@e0100000
  65
  66 RISC-V # version
  67 U-Boot 2018.01-rc2-00033-gb265b91-dirty (Dec 22 2017 - 13:54:21 +0800)
  68
  69 riscv32-unknown-linux-gnu-gcc (GCC) 7.2.0
  70 GNU ld (GNU Binutils) 2.29
  71
  72 RISC-V # setenv ipaddr 10.0.4.200 ;
  73 RISC-V # setenv serverip 10.0.4.97 ;
  74 RISC-V # ping 10.0.4.97 ;
  75 Using mac@e0100000 device
  76 host 10.0.4.97 is alive
  77
  78 RISC-V # mmc rescan
  79 RISC-V # fatls mmc 0:1
  80    318907   u-boot-ae250-64.bin
  81      1252   hello_world_ae250_32.bin
  82    328787   u-boot-ae250-32.bin
  83
  84 3 file(s), 0 dir(s)
  85
  86 RISC-V # sf probe 0:0 50000000 0
  87 SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
  88
  89 RISC-V # sf test 0x100000 0x1000
  90 SPI flash test:
  91 0 erase: 36 ticks, 111 KiB/s 0.888 Mbps
  92 1 check: 29 ticks, 137 KiB/s 1.096 Mbps
  93 2 write: 40 ticks, 100 KiB/s 0.800 Mbps
  94 3 read: 20 ticks, 200 KiB/s 1.600 Mbps
  95 Test passed
  96 0 erase: 36 ticks, 111 KiB/s 0.888 Mbps
  97 1 check: 29 ticks, 137 KiB/s 1.096 Mbps
  98 2 write: 40 ticks, 100 KiB/s 0.800 Mbps
  99 3 read: 20 ticks, 200 KiB/s 1.600 Mbps
 100
 101 RISC-V # fatload mmc 0:1 0x600000 u-boot-ae250-32.bin
 102 reading u-boot-ae250-32.bin
 103 328787 bytes read in 324 ms (990.2 KiB/s)
 104
 105 RISC-V # sf erase 0x0 0x51000
 106 SF: 331776 bytes @ 0x0 Erased: OK
 107
 108 RISC-V # sf write 0x600000 0x0 0x50453
 109 device 0 offset 0x0, size 0x50453
 110 SF: 328787 bytes @ 0x0 Written: OK
 111
 112 RISC-V # crc32 0x600000 0x50453
 113 crc32 for 00600000 ... 00650452 ==> 692dc44a
 114
 115 RISC-V # crc32 0x80000000 0x50453
 116 crc32 for 80000000 ... 80050452 ==> 692dc44a
 117 RISC-V #
 118
 119 *** power-off and power-on, this U-Boot is booted from spi flash        ***
 120
 121 U-Boot 2018.01-rc2-00032-gf67dd47-dirty (Dec 21 2017 - 13:56:03 +0800)
 122
 123 DRAM:  1 GiB
 124 MMC:   mmc@f0e00000: 0
 125 SF: Detected mx25u1635e with page size 256 Bytes, erase size 4 KiB, total 2 MiB
 126 In:    serial@f0300000
 127 Out:   serial@f0300000
 128 Err:   serial@f0300000
 129 Net:
 130 Warning: mac@e0100000 (eth0) using random MAC address - ee:4c:58:29:32:f5
 131 eth0: mac@e0100000
 132 RISC-V #
 133
 134 TODO
 135 ====================
 136
 137 Boot bbl and riscv-linux