android boot.img dts,[RK3288][Android6.0] 调试笔记 --- 修改boot.img后进入Recovery模式问题...

Platform: RK3288

OS: Android 7.0

Kernel: 4.4.83

现象:

修改了init.rc编译出来的bootimage下载进去后无法开机进入Recovery模式.

Log:

read logo on state from dts [1]

pll_src = 0, dclk_hz = 138700000, dclk_div = 2

edp pll locked

Aux Transaction fail!

link training success.

unable to config video

Hit any key to stop autoboot:  0

boot or recovery image sha mismatch!

Unable to boot:boot

try to start recovery

原因:

uboot阶段会检查boot.img和寄存器里的SHA是否一致,如果不匹配就会返回错误.

调用流程:

do_bootrk ->    cmd_bootrk.c

rk_load_image_from_storage ->

SecureBootImageCheck ->    SercureBoot.c

SecureModeBootImageCheck ->     SecureVerify.c

SecureNSModeBootImageCheck ->

SecureNSModeBootImageShaCheck

解决办法:

关闭 CONFIG_SECUREBOOT_CRYPTO 宏.

文件路径: u-boot/include/configs/rk32plat.h

原文：https://www.cnblogs.com/zhq-vip/p/13039091.html