U-Boot

Setup

Install the GCC cross compiler for ARM Cortex-R/M processors

• Arch Linux

  sudo pacman -S arm-none-eabi-gcc openssl bc
• Debian Linux

  sudo apt install gcc-arm-none-eabi libssl-dev bc

Build

This will generate the u-boot.img and MLO.

$ make

Flash

Flash u-boot.img and MLO. Change /dev/sda as needed.

$ sudo dd if=u-boot-dtb.img of=/dev/sda count=4 seek=1 bs=384k
$ sudo dd if=MLO of=/dev/sda count=2 seek=1 bs=128k