# Kernel config based on: kernel/samsung/msm8976/arch/arm64/configs/gts210vewifi_defconfig

pkgname="linux-samsung-gts210vewifi"
pkgver=3.10.102
pkgrel=2
pkgdesc="Galaxy Tab S2 9.7 WiFi (SM-T813) kernel fork"
arch="aarch64"
_carch="arm64"
_flavor="samsung-gts210vewifi"
url="https://kernel.org"
license="GPL2"
options="!strip !check !tracedeps"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev dtbtool gcc6"

# Compiler: this kernel was only tested with GCC6. Feel free to make a merge
# request if you find out that it is booting working with newer GCCs as
# well. See <https://postmarketos.org/vendorkernel> for instructions.
if [ "${CC:0:5}" != "gcc6-" ]; then
	CC="gcc6-$CC"
	HOSTCC="gcc6-gcc"
	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
fi

# Source
# gts210vewifi uses msm8976 kernel
_repository="android_kernel_samsung_msm8976"
_commit="82d475a1952b9bbb6652b35e87671b5031bcf934"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
	$_config
	compiler-gcc6.h
	01_fix_msm_dba.patch
"
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare

	# gcc6 support
	cp -v "$srcdir/compiler-gcc6.h" "$builddir/include/linux/"

	# Remove -Werror from all makefiles
	local i
	local makefiles="$(find . -type f -name Makefile)
		$(find . -type f -name Kbuild)"
	for i in $makefiles; do
		sed -i 's/-Werror-/-W/g' "$i"
		sed -i 's/-Werror//g' "$i"
	done

	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
	cp "$srcdir"/$_config "$builddir"/.config
	yes "" | make ARCH="$_carch" HOSTCC="$HOSTCC" oldconfig
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		C_INCLUDE_PATH="./arch/arm/mach-msm:./sound/soc/msm/qdsp6v2"
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
	# As path is symlinked from arm64 to arm, dtb files end up below arm, not arm64
	echo dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm64/boot/dt.img" "arch/arm/boot/dts/"
	# Generate master DTB (deviceinfo_bootimg_qcdt).
	dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm64/boot/dt.img" "arch/arm/boot/dts/"
}

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 "$builddir/arch/arm64/boot/dt.img" \
		"$pkgdir/boot/dt.img"
}

sha512sums="37e55b3e64308a29deb8932d8d2452ff76601558bdcb9ff58f3a016f5ec63c2941e5fe7cdcced50d5039d3cdadaa5d43004c4e27cb8b105f8fda7596d676fb9e  linux-samsung-gts210vewifi-82d475a1952b9bbb6652b35e87671b5031bcf934.tar.gz
31d6b7356ac1c1053dce3319371b18298a4a6e815abcd910a7e0ff0a4dc03bcff15da14f8e8d485c80da29169788754f019f2b158355c3768bae7c2b17f3047b  config-samsung-gts210vewifi.aarch64
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
7e765cb696fa8c3dfbc305b05cbf1fad85fb9572613d5391e945341dae5974a745f4906c795dc841e5562b19ab77d5257f9741e514af2c2573aa4bb8b262ce51  01_fix_msm_dba.patch"