build_uboot_sunxi64.sh

#!/bin/sh

CONFIG_SPL=sun50i_h5_spl32_defconfig
#CONFIG_SPL=sun50i_spl32_defconfig
CONFIG_PROPER=orangepi_pc2_defconfig
#CONFIG_PROPER=pine64_plus_defconfig
BINDIR=/tmp

__ORIG_CROSS_CC="$CROSS_COMPILE"

find_tool_chain() (
    if [ -n "$__ORIG_CROSS_CC" ]
    then
        if echo $__ORIG_CROSS_CC | grep -q ^"$1"
        then
            echo $__ORIG_CROSS_CC
            echo "using env cross-cc" > /dev/stderr
            return 0
        fi
    fi

    IFS=:
    for path in $PATH
    do
        ls $path/${1}-*-gcc 2> /dev/null
    done | head -1 | xargs basename | sed -e s/gcc\$//
)

make -s clean
export CROSS_COMPILE=$(find_tool_chain arm)
echo "Building 32-bit SPL with ${CROSS_COMPILE}gcc"
make -s $CONFIG_SPL
make -j5 -s

cp -a spl/sunxi-spl.bin $BINDIR
cp -a spl/sunxi-spl.bin $BINDIR/firmware.img

make -s clean
export CROSS_COMPILE=$(find_tool_chain aarch64)
echo "Building 64-bit U-Boot with ${CROSS_COMPILE}gcc"
make -s $CONFIG_PROPER
make -j5 -s

cp -a u-boot.bin $BINDIR
dd if=u-boot.img bs=32k seek=1 of=$BINDIR/firmware.img status=none