#
# SPDX-License-Identifier: GPL-2.0
#
# Copyright (c) 2013-2023 Igor Pecovnik, igor@armbian.com
#
# This file is a part of the Armbian Build Framework
# https://github.com/armbian/build/
#
ARCH=armhf
SERIALCON='ttyPS0'
LINUXFAMILY=zynq

KERNELSOURCE='https://github.com/Xilinx/linux-xlnx.git'
declare -g KERNEL_MAJOR_MINOR="5.4" # Major and minor versions of this kernel. See https://github.com/Xilinx/linux-xlnx/blob/xilinx-v2020.2/Makefile
KERNELBRANCH='tag:xilinx-v2020.2'
KERNELDIR='linux-xlnx'
KERNELPATCHDIR='zynq-'$BRANCH

BOOTSOURCE='https://github.com/Xilinx/u-boot-xlnx.git'
BOOTBRANCH='tag:xilinx-v2020.2'
BOOTCONFIG="xilinx_zynq_virt_defconfig"
BOOTDIR='u-boot-xlnx'
BOOTSCRIPT='boot-zynq.cmd:boot.cmd'
BOOTENV_FILE='zynq.txt'
UBOOT_TARGET_MAP=';;u-boot.elf'

family_tweaks() {
	true
}

# @TODO: rpardini: this is leaking into the host system (/usr/local), let's not
compile_xilinx_bootgen() {
	# Source code checkout
	fetch_from_repo "https://github.com/Xilinx/bootgen.git" "xilinx-bootgen" "branch:master"

	pushd "${SRC}"/cache/sources/xilinx-bootgen || exit

	# Compile and install only if git commit hash changed
	# need to check if /usr/local/bin/bootgen to detect new Docker containers with old cached sources
	if [[ ! -f .commit_id || $(git rev-parse @ 2> /dev/null) != $(< .commit_id) || ! -f /usr/local/bin/bootgen ]]; then
		display_alert "Compiling" "xilinx-bootgen" "info"
		make -s clean > /dev/null
		make -s -j$(nproc) bootgen > /dev/null
		mkdir -p /usr/local/bin/
		install bootgen /usr/local/bin > /dev/null 2>&1
		git rev-parse @ 2> /dev/null > .commit_id
	fi

	popd
}

uboot_custom_postprocess() {
	# Precompiled first stage bootloader
	(fetch_from_repo "https://github.com/tparys/xilinx-fsbl-blobs" "xilinx-fsbl" "branch:master")
	cp ${SRC}/cache/sources/xilinx-fsbl/zynq/fsbl.elf .

	# Compile Xilinx bootgen to make boot image
	compile_xilinx_bootgen

	# Create a bootgen build instruction file
	cat > build.bif << EOF
the_ROM_image : {
  [bootloader]fsbl.elf
  u-boot.elf
}
EOF

	# Regenerate boot.bin
	rm -f boot.bin
	bootgen -image build.bif -o i boot.bin

	# And a simple README for users
	cat > README << EOF
# Regenerate Zynq boot.bin from fsbl.elf, u-boot.elf
bootgen -image build.bif -o i boot.bin
EOF

	# Package build components into u-boot lib dir
	cp fsbl.elf "$uboottempdir/${uboot_name}/usr/lib/${uboot_name}/${f_dst}"
	cp build.bif "$uboottempdir/${uboot_name}/usr/lib/${uboot_name}/${f_dst}"
	cp README "$uboottempdir/${uboot_name}/usr/lib/${uboot_name}/${f_dst}"

	# Package boot.bin as a u-boot "config file", so package manager
	# won't fight end users who update this themselves ...
	mkdir -p "$uboottempdir/${uboot_name}/boot"
	cp boot.bin "$uboottempdir/${uboot_name}/boot"
	mkdir -p "$uboottempdir/${uboot_name}/DEBIAN"
	echo "/boot/boot.bin" > "$uboottempdir/${uboot_name}/DEBIAN/conffiles"
}

write_uboot_platform() {
	:
}