Get the Source and prebuild binary ================================== > mkdir ~/evb_rk3229 > cd ~/evb_rk3229 > git clone git://git.denx.de/u-boot.git > git clone https://github.com/OP-TEE/optee_os.git > git clone https://github.com/rockchip-linux/rkbin.git > git clone https://github.com/rockchip-linux/rkdeveloptool.git Compile the OP-TEE =============== > cd optee_os > make clean > make CROSS_COMPILE_ta_arm32=arm-none-eabi- PLATFORM=rockchip-rk322x Get tee.bin in this step, copy it to U-Boot root dir: > cp out/arm-plat-rockchip/core/tee-pager.bin ../u-boot/tee.bin Compile the U-Boot ================== > cd ../u-boot > export CROSS_COMPILE=arm-linux-gnueabihf- > make evb-rk3229_defconfig > make > make u-boot.itb Get tpl/u-boot-tpl.bin, spl/u-boot-spl.bin and u-boot.itb in this step. Compile the rkdeveloptool ======================= Follow instructions in latest README > cd ../rkflashtool > autoreconf -i > ./configure > make > sudo make install Get rkdeveloptool in you Host in this step. Both origin binaries and Tool are ready now, choose either option 1 or option 2 to deploy U-Boot. Package the image ================= > cd ../u-boot > tools/mkimage -n rk322x -T rksd -d tpl/u-boot-spl.bin idbloader.img > cat spl/u-boot-spl.bin >> idbloader.img Get idbloader.img in this step. Flash the image to eMMC ======================= Power on(or reset with RESET KEY) with MASKROM KEY preesed, and then: > cd .. > rkdeveloptool db rkbin/rk32/rk322x_loader_v1.04.232.bin > rkdeveloptool wl 64 u-boot/idbloader.img > rkdeveloptool wl 0x4000 u-boot/u-boot.itb > rkdeveloptool rd Flash the image to SD card ========================== > dd if=u-boot/idbloader.img of=/dev/sdb seek=64 > dd if=u-boot/u-boot.itb of=/dev/sdb seek=16384 You should be able to get U-Boot log message with OP-TEE boot info. For more detail, please reference to: http://opensource.rock-chips.com/wiki_Boot_option