Rock/U-Boot
Contents
U-Boot
The source code of U-Boot for Rockchip is available, but more work needs to be done to make it usable for Radxa Rock.
Features
- both common fastboot USB protocol and Rockchip proprietary USB protocol are supported (Rockchip USB tools will work)
- format of partitions (images) are compatible to Rockchip proprietary bootloader (rkcrc, mkbootimg will work)
- (need more investigation...)
Build
git clone https://github.com/radxa/u-boot-rockchip.git cd u-boot-rockchip export ARCH=arm export CROSS_COMPILE=arm-linux-gnueabihf- make rk30xx
RK3188Loader_uboot.bin will be created. DON'T FLASH IT.
Develop
Some important files and directories related to the Rockchip platform:
* UserManual - documentation * include/configs/rk30xx.h - configuration file * tools/rk_tools
* board/rockchip ├── common │ ├── armlinux │ ├── common │ │ ├── A8MMU │ │ ├── crc │ │ ├── emmc │ │ ├── fat │ │ ├── rc4 │ │ ├── rockusb │ │ ├── serial_p9 │ │ └── SPI │ └── platform │ ├── rk2928 │ └── rk30 └── rk30xx
* arch/arm/cpu/armv7/rk30xx * arch/arm/include/asm/arch-rk30xx
Unbrick
If something goes wrong and your device doesn't boot anymore, read Unbrick Rock.