Rock/bootloader

Currently all rk3188 based devices including radxa rock uses the same bootloader from Rockchip. Rockchip don't provide the source code of the bootloader. The bootloader's main task is:

• Load and boot the kernel.img/boot.img or recovery.img from correspoding partition
• Communicate with the host PC to download the image/firmware for upgrading

Download

The bootloader of radxa rock can be found at this address

   http://dl.radxa.com/rock/images/loader/

Reverse engineering

The analysis of the bootloader is done by sarg. Ping sarg in #linux-rockchip if you are interested. You can find the details here:

   https://gist.github.com/sarg/5028505