lxc launch images:ubuntu/bionic/amd64 ubuntu-uboot-compilation
lxc exec ubuntu-uboot-compilation bash

apt-get update
apt-get upgrade
apt install bc nano mc build-essential autoconf libtool cmake pkg-config git python-dev swig3.0 libpcre3-dev nodejs-dev gawk wget diffstat bison flex device-tree-compiler libncurses5-dev gcc-aarch64-linux-gnu g++-aarch64-linux-gnu binfmt-support

mkdir u-boot_dev
cd u-boot_dev

git clone --depth 1 https://github.com/u-boot/u-boot -b master

cd u-boot
export ARCH=arm
export CROSS_COMPILE=aarch64-linux-gnu-
make libretech-cc_defconfig
make

cd ..
mkdir blobs
cd blobs

dpkg --add-architecture i386
apt update
apt install libc6:i386 libncurses5:i386 libstdc++6:i386 lib32z1

wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
wget https://releases.linaro.org/archive/13.11/components/toolchain/binaries/gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
tar xvfJ gcc-linaro-aarch64-none-elf-4.8-2013.11_linux.tar.xz
tar xvfJ gcc-linaro-arm-none-eabi-4.8-2013.11_linux.tar.xz
export PATH=$PWD/gcc-linaro-aarch64-none-elf-4.8-2013.11_linux/bin:$PWD/gcc-linaro-arm-none-eabi-4.8-2013.11_linux/bin:$PATH
git clone --depth 1 https://github.com/BayLibre/u-boot.git -b libretech-cc amlogic-u-boot
cd amlogic-u-boot
sed -i 's/aarch64-linux-gnu-/aarch64-none-elf-/' Makefile
sed -i 's/arm-linux-/arm-none-eabi-/' arch/arm/cpu/armv8/gxb/firmware/scp_task/Makefile
make libretech_cc_defconfig
make
export FIPDIR=$PWD/fip

cd ../../u-boot
mkdir fip

cp $FIPDIR/gxl/bl2.bin fip/
cp $FIPDIR/gxl/acs.bin fip/
cp $FIPDIR/gxl/bl21.bin fip/
cp $FIPDIR/gxl/bl30.bin fip/
cp $FIPDIR/gxl/bl301.bin fip/
cp $FIPDIR/gxl/bl31.img fip/
cp u-boot.bin fip/bl33.bin

$FIPDIR/blx_fix.sh fip/bl30.bin fip/zero_tmp fip/bl30_zero.bin fip/bl301.bin fip/bl301_zero.bin fip/bl30_new.bin bl30

# if running the acs_tool.pyc file directly does not work, try running it with the python interpreter ("python $FIPDIR/acs_tool.pyc ...")
$FIPDIR/acs_tool.pyc fip/bl2.bin fip/bl2_acs.bin fip/acs.bin 0

$FIPDIR/blx_fix.sh fip/bl2_acs.bin fip/zero_tmp fip/bl2_zero.bin fip/bl21.bin fip/bl21_zero.bin fip/bl2_new.bin bl2

$FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl30_new.bin
$FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl31.img
$FIPDIR/gxl/aml_encrypt_gxl --bl3enc --input fip/bl33.bin
$FIPDIR/gxl/aml_encrypt_gxl --bl2sig --input fip/bl2_new.bin --output fip/bl2.n.bin.sig
$FIPDIR/gxl/aml_encrypt_gxl --bootmk --output fip/u-boot.bin --bl2 fip/bl2.n.bin.sig --bl30 fip/bl30_new.bin.enc --bl31 fip/bl31.img.enc --bl33 fip/bl33.bin.enc

exit
lxc file pull ubuntu-uboot-compilation/root/u-boot_dev/u-boot/fip/u-boot.bin.sd.bin .
lxc stop ubuntu-uboot-compilation
lxc delete ubuntu-uboot-compilation