website
home: http://www.denx.de/wiki/U-Boot/WebHome
doc: http://www.denx.de/wiki/U-Boot/Documentation
download: ftp://ftp.denx.de/pub/u-boot/
1. download
download u-boot-2019.10.tar.bz2
tar -vxjf u-boot-2019.10.tar.bz2
2. build
make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- distclean
make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- imx8mq_evk_defconfig
make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- -j2
u-boot.bin and u-boot.img is final file
Note:
1) defconfig is at u-boot-2019.10/configs
2) imx8mq supports A53 and is ARM64 architecture
3. configure
make ARCH=arm CROSS_COMPILE=aarch64-linux-gnu- menuconfig