# Reference: <https://postmarketos.org/vendorkernel>
# Kernel config based on: (kernel/samsung/msm8976/)arch/arm64/configs/gts210velte_defconfig

pkgname="linux-samsung-gts210velte"
pkgver=3.10.102
pkgrel=1
pkgdesc="Samsung Galaxy Tab S2 9.7 LTE (SM-T819) kernel fork"
arch="aarch64"
_carch="arm64"
_flavor="samsung-gts210velte"
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 dtbtool gcc6 devicepkg-dev"

# 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
# gts210velte uses msm8976 kernel
_repository="android_kernel_samsung_msm8976"
_commit="f6ab8eed124e3adc1c90d9f3106abd21c0bd0397"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
	$_config
	01_fix_msm_dba.patch
"
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare

	downstreamkernel_prepare "$srcdir" "$builddir" "$_config" "$_carch" "$HOSTCC"
}

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="4fd6cbb31e389bdc50defb586d4a2d86d8bb51556b45b8f974c5ecb11de4900d36d0af65090f61664e32a48a7cef3f89f57157b460f4d6d5d05fa71e1400a099  linux-samsung-gts210velte-f6ab8eed124e3adc1c90d9f3106abd21c0bd0397.tar.gz
0dc4d943e8effe6778d2c6f0353990757435f1fce59083b7bfaa834328fa91d7df3c2543758cbb20e7c115c9f28b7d9eb7e936024331af995f9da88223e45c6e  config-samsung-gts210velte.aarch64
7e765cb696fa8c3dfbc305b05cbf1fad85fb9572613d5391e945341dae5974a745f4906c795dc841e5562b19ab77d5257f9741e514af2c2573aa4bb8b262ce51  01_fix_msm_dba.patch"