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Download ARM Trusted Firmware

Get the source code from github:

git clone

Supported Devices[edit]

Upstream ARM Trusted Firmware support Rockchip SoCs:


Build ATF

Here is a script to build ATF.

$ cat 


make realclean

CFLAGS='-gdwarf-2' \
CROSS_COMPILE=aarch64-linux-gnu- \
make PLAT=rk3399 DEBUG=1 ERROR_DEPRECATED=1 bl31

Because there is a blob of code for cortex-M0, so you need a compiler for it. Install it by:

sudo apt-get install gcc-arm-none-eabi

We can get bl31.bin when build complete.

Install ATF

Using U-Boot SPL FIT image[edit]

Using Rockchip miniloader[edit]

Alternatively, you can use Rockchip miniloader and U-Boot instead which do not need SPL.

The miniloader is package as IDBlock, and the u-boot.bin need to package with rockchip tool:

loaderimage --pack --uboot u-boot.bin rk3288_uboot.img

According to the partitions definition, this output should write to offset 0x4000.