T507烧写的SD卡无法启动

[davidq]

构建过程如下：

source build/envsetup.sh

选择的如下：

Welcome to mkscript setup progress
All available platform:
   0. android
   1. linux
Choice [android]: 1
All available linux_dev:
   0. bsp
   1. dragonboard
   2. longan
   3. tinyos
Choice [bsp]: 0
All available kern_ver:
   0. linux-4.9
Choice [linux-4.9]: 0
All available ic:
   0. t507
Choice [t507]: 0
All available board:
   0. demo
   1. demo2.0
   2. demo2.0_car
   3. demo2.0_td100
   4. demo_rawnand_ubi
   5. demo_spinand_ubi
   6. evb
   7. fpga
   8. ft
   9. per6_td100
  10. qa
  11. ver_v1_0
Choice [demo]: 0
All available flash:
   0. default
   1. nor
Choice [default]: 0

接着执行 buiild 命令
接下来执行 pack 命令，产生出来了 out/pack_out/t507_linux_demo_uart0.img 镜像文件
使用 PhoenixCard 工具烧录到SD卡中，给板子插上SD卡通电启动后的日志如下：

ubuntuAarch64 login: [102]HELLO! BOOT0 is starting!
[105]BOOT0 commit : 8b62e3eec1
[108]set pll start
[110]periph0 has been enabled
[114]set pll end
[116]PMU: AXP858
[135]vaild para:8  select dram para2
[139]IC illegal !!!

这个是什么意思？

[WhycanService]

SDK哪里来的，这个SDK不适配这个版本的T507芯片（芯片有ABCD版本，需要加补丁适配

[davidq]

@whycanservice 应该是代理商的技术给的。后面给我我补丁，我打上了。重新制作了镜像 t507_h_linux_demo2.0_uart0.img ，烧录到TF卡，还是不能正常启动。

   [108]HELLO! BOOT0 is starting!
[111]BOOT0 commit : 100e431
[114]set pll start
[116]periph0 has been enabled
[119]set pll end
[121]PMU: AXP858
[132]vaild para:1  select dram para0
[135]board init ok
[137]debug:rtc h-m-s value:0x0
[140]DRAM BOOT DRIVE INFO: V0.648
[144]the chip id is 0x7c00
[146]chip id check OK
[150]DRAM_VCC set to 1100 mv
[158]read_calibration error
[166]read_calibration error
[174]read_calibration error
[183]read_calibration error
[191]read_calibration error
[199]read_calibration error
[207]read_calibration error
[215]read_calibration error
[223]read_calibration error
[232]read_calibration error
[234]retraining final error
[245][AUTO DEBUG]32bit,1 ranks training success!
[261]DRAM CLK =720 MHZ
[263]DRAM Type =8 (3:DDR3,4:DDR4,7:LPDDR3,8:LPDDR4)
[273]Actual DRAM SIZE =8192 M
[276]DRAM SIZE =8192 MBytes, para1 = 311b, para2 = 20000000, dram_tpr13 = 6061
[291]Actual DRAM SIZE =8192 M
[296]DRAM simple test FAIL-----fedcbe98 != fedcba98 at address 40000000

请问 [296]DRAM simple test FAIL-----fedcbe98 != fedcba98 at address 40000000 这个大概是什么原因？我可以从tf卡启动吗？还是说必须要从emmc启动？