make clean
make rk3399_defconfig ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-
make CROSS_COMPILE=aarch64-linux-gnu-
tools/loaderimage --pack --uboot u-boot.bin uboot.img
make clean
make rk3399_defconfig ARCH=arm64 CROSS_COMPILE=aarch64-linux-gnu-
make CROSS_COMPILE=aarch64-linux-gnu-
tools/loaderimage --pack --uboot u-boot.bin uboot.img