U-Boot

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Compiling Uboot

First, You need to compile ATF

 git clone https://github.com/crust-firmware/arm-trusted-firmware/
 cd arm-trusted-firmware
 CROSS_COMPILE=aarch64-linux-gnu-
 export CROSS_COMPILE
 export ARCH=arm64
 make PLAT=sun50i_a64 bl31
 cp build/sun50i_a64/release/bl31.bin ../u-boot/
 cd ..

Uboot installation