kobol-wiki/docs/uboot.md

Cross compiler

Under Debian / Ubuntu you need first to install the necessary packages and tools for cross compiling for ARM.

sudo apt-get install gcc make gcc-arm-linux-gnueabi binutils-arm-linux-gnueabi

Other option, use Linaro cross compiler 4.9.4 arm-gnueabi toolchain. Download here.

Compile U Boot

git clone https://github.com/helios-4/u-boot-marvell.git

cd u-boot-marvell

export ARCH=arm
export CROSS_COMPILE="/path/to/cross/compiler"
export CROSS_COMPILE_BH=${CROSS_COMPILE}

make mrproper

./build.pl -f mmc -b armada_38x_helios4

!!! note To compile using Ubuntu 16.04 cross compiler, please apply this patch to U-Boot source code.

!!! note If failed to compile using Linaro cross compiler 4.9.4 arm-gnueabihf (error about hard float VFP), use soft-float compiler