Platform: RK3399
OS: Android 7.1
Kernel: v4.4.83
背景:
到kernel 4.4上面,发现内核把重启参数通用驱动也实现了。
rk3288 android6.0 kernel3.10上rk是自己实现的。
文档说明:
针对通用reboot mode驱动,内核有文档解释:
Generic reboot mode core map driver
This driver get reboot mode arguments and call the write interface to stores the magic value in special register or ram . Then the bootloader can read it and take different action according the argument stored.
All mode properties are vendor specific, it is a indication to tell the bootloder what to do when the system reboot, and</