Build the TPL/SPL stage
=======================
- > make CROSS_COMPILE=aarch64-unknown-elf- ARCH=arm
- > tools/mkimage -n rk3368 -T rksd -d tpl/u-boot-tpl.bin spl-3368.img
- > cat spl/u-boot-spl-dtb.bin >> spl-3368.img
+ > make CROSS_COMPILE=aarch64-unknown-elf-
Build the full U-Boot and a FIT image including the ATF
=======================================================
- > make CROSS_COMPILE=aarch64-unknown-elf- ARCH=arm u-boot.itb
+ > make CROSS_COMPILE=aarch64-unknown-elf- u-boot.itb
Flash the image
===============
SD-Card
-------
- > dd if=spl-3368.img of=/dev/sdb seek=64
+ > dd if=idbloader.img of=/dev/sdb seek=64
> dd if=u-boot.itb of=/dev/sdb seek=512
eMMC