#!/usr/bin/env zsh
# Copyright (c) 2016 Dyne.org Foundation
# arm-sdk is written and maintained by Ivan J. <parazyd@dyne.org>
#
# This file is part of arm-sdk
#
# This source code is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this source code. If not, see <http://www.gnu.org/licenses/>.

## kernel build script for Cubieboard2 boards

## settings & config
vars+=(device_name arch size parted_type parted_boot parted_root inittab)
vars+=(gitkernel gitbranch sunxi_tools sunxi_uboot sunxi_boards)
arrs+=(custmodules)

device_name="cubieboard2"
arch="armhf"
size=1891
inittab="T1:12345:respawn:/sbin/agetty -L ttyS0 115200 vt100"

parted_type="dos"
parted_boot="fat32 2048s 264191s"
parted_root="ext4 264192s 100%"

extra_packages+=()
custmodules=()

gitkernel="git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git"
gitbranch="linux-4.10.y"

uboot=mainline
sunxi_uboot="git://git.denx.de/u-boot.git"

prebuild() {
	fn prebuild
	req=(device_name strapdir)
	ckreq || return 1

	notice "executing $device_name prebuild"

	copy-root-overlay

	mkdir -p $R/tmp/kernels/$device_name
}

postbuild() {
	fn postbuild

	notice "executing $device_name postbuild"

	notice "building u-boot"
	clone-git $sunxi_uboot "$R/tmp/kernels/$device_name/u-boot" || zerr
	pushd $R/tmp/kernels/$device_name/u-boot
		make distclean
		make \
			$MAKEOPTS \
			ARCH=arm \
			CROSS_COMPILE=$compiler \
				Cubieboard2_defconfig || zerr
		make \
			$MAKEOPTS \
			ARCH=arm \
			CROSS_COMPILE=$compiler || zerr

		act "dd-ing to image..."
		sudo dd if=u-boot-sunxi-with-spl.bin of=$loopdevice bs=1024 seek=8 || zerr
	popd

	notice "creating boot.cmd"
	cat <<EOF | sudo tee ${strapdir}/boot/boot.cmd
setenv bootargs console=ttyS0,115200 root=/dev/mmcblk0p2 rootwait panic=10
load mmc 0:1 0x43000000 \${fdtfile} || load mmc 0:1 0x43000000 boot/\${fdtfile}
load mmc 0:1 0x42000000 zImage || load mmc 0:1 0x42000000 boot/zImage
bootz 0x42000000 - 0x43000000
EOF

	notice "creating u-boot script image"
	sudo mkimage -A arm -T script -C none -d $strapdir/boot/boot.cmd $strapdir/boot/boot.scr || zerr

	postbuild-clean
}

build_kernel_armhf() {
	fn build_kernel_armhf
	req=(R arch device_name gitkernel gitbranch MAKEOPTS)
	req+=(strapdir sunxi_uboot)
	req+=(loopdevice)
	ckreq || return 1

	notice "building $arch kernel"

	prebuild || zerr

	get-kernel-sources
	pushd $R/tmp/kernels/$device_name/${device_name}-linux
		copy-kernel-config
		make \
			$MAKEOPTS \
			ARCH=arm \
			CROSS_COMPILE=$compiler \
				zImage dtbs modules || zerr
		sudo -E PATH="$PATH" \
			make \
				$MAKEOPTS \
				ARCH=arm \
				CROSS_COMPILE=$compiler \
				INSTALL_MOD_PATH=$strapdir \
					modules_install || zerr
		sudo cp -v arch/arm/boot/zImage $strapdir/boot/ || zerr
		sudo cp -v arch/arm/boot/dts/sun7i-a20-cubieboard2.dtb $strapdir/boot/ || zerr
	popd

	postbuild || zerr
}