# Reference: <https://postmarketos.org/vendorkernel>
# Kernel config based on: arch/arm/configs/montana_defconfig

pkgname="linux-motorola-montana"
pkgver=3.18.71
pkgrel=0
pkgdesc="Motorola Moto G5s kernel fork"
arch="armv7"
_carch="arm"
_flavor="motorola-montana"
url="https://kernel.org"
license="GPL-2.0-only"
options="!strip !check !tracedeps"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev devicepkg-dev dtbtool xz"

# Compiler: latest GCC from Alpine
HOSTCC="${CC:-gcc}"
HOSTCC="${HOSTCC#${CROSS_COMPILE}}"

# Source
_repository="kernel-msm"
_commit="oreo-8.1.0-release"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/kubast2/${_repository}/archive/${_commit}.tar.gz 
	$_config
	gcc8-fix-put-user.patch
"
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare
	REPLACE_GCCH=0 downstreamkernel_prepare "$srcdir" "$builddir" "$_config" "$_carch" "$HOSTCC"
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"

	# Generate master DTB (deviceinfo_bootimg_qcdt)
	dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm/boot/dt.img" "arch/arm/boot/"
}

package() {
	# kernel.release
	install -D "$builddir/include/config/kernel.release" \
		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"

	# zImage (find the right one)
	cd "$builddir/arch/$_carch/boot"
	_target="$pkgdir/boot/vmlinuz-$_flavor"
	for _zimg in zImage-dtb Image.gz-dtb *zImage Image; do
		[ -e "$_zimg" ] || continue
		msg "zImage found: $_zimg"
		install -Dm644 "$_zimg" "$_target"
		break
	done
	if ! [ -e "$_target" ]; then
		error "Could not find zImage in $PWD!"
		return 1
	fi

	# Master DTB (deviceinfo_bootimg_qcdt)
	install -Dm644 "$builddir/arch/arm/boot/dt.img" \
		"$pkgdir/boot/dt.img"
}

sha512sums="d84030635b95fde39fe92e5eb79c288c1096a276930cd204ad18119d759f785ca7a0647bb16fd2eaa17c0635ed66e5c2324ef454324e83b5fd678e29e05c926c  linux-motorola-montana-oreo-8.1.0-release.tar.gz
cd15d24513982b5ce1332cd353f84774eab0d7ac76a8b20a920fc78ee57d3925d25f63171474e959e2018a03401ba7acfa35f4f668f7b1d10d69bd5839b73b2f  config-motorola-montana.armv7
197d40a214ada87fcb2dfc0ae4911704b9a93354b75179cd6b4aadbb627a37ec262cf516921c84a8b1806809b70a7b440cdc8310a4a55fca5d2c0baa988e3967  gcc8-fix-put-user.patch"