Build the TPL/SPL stage
=======================
- > make CROSS_COMPILE=aarch64-unknown-elf- ARCH=arm
+ > 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
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