Rock/bootloader

English

Introduction

Currently all RK3188 based devices including the Radxa Rock use the same bootloader from Rockchip.

Its main task is to:

Load and start the kernel/boot images or recovery image from the corresponding partitions.
Communicate with the host PC to download the image/firmware for upgrading

Download

The bootloader of the Radxa Rock can be downloaded from this address:

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

Source code

The bootloader is based on U-boot and source code is available now:

   https://github.com/neo-technologies/rockchip_u-boot

TODO: Add instructions to build bootloader from source.

Recovery

If you get issues when flashing a new bootloader from development sources and your board doesn't seem to boot anymore, then read unbrick page to fix it and flash official Rockchip's bootloader.

Analysis

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

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

You can find more information on sargs work here although the article is in Chinese.