# Reference: <https://postmarketos.org/vendorkernel>
# Kernel config based on: arch/arm/configs/msm8974_sec_defconfig
#                         arch/arm/configs/msm8974pro_sec_klte_eur_defconfig
#                         arch/arm/configs/selinux_defconfig

pkgname="linux-samsung-klte"
pkgver=3.4.113
pkgrel=5
pkgdesc="Samsung Galaxy S5 kernel fork"
arch="armv7"
_carch="arm"
_flavor="samsung-klte"
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 xz dtbtool devicepkg-dev gcc6"

# Compiler: GCC 6 (doesn't boot when compiled with newer versions)
if [ "${CC:0:5}" != "gcc6-" ]; then
	CC="gcc6-$CC"
	HOSTCC="gcc6-gcc"
	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
fi

# Source
_repository="android_kernel_samsung_msm8974"
_commit="edfd9dd9be89d15c34f653363a9a3c9108146ca0"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
	$_config
	0001_fix_return_address.patch
	0002_gpu-msm-fix-gcc5-compile.patch
	0003-Reduce-battery-and-touchscreen-log-spam.patch
	0004-fix-video-argb-setting.patch
	0005-mdss_fb-Always-allow-to-allocate-map-framebuffer-mem.patch
	0006-Fix-xt_connbytes-compile-warning.patch
	0007-usb_gadget-set-random-rndis-host-MAC-address-to-prev.patch
	0008-Backport-vfs-make-O_PATH-file-descriptors-usable-for.patch
	0009-Backport-cache-the-value-of-file_inode-in-struct-file.patch
	0010-Backport-shm-add-sealing-API.patch
	0011-Backport-shm-add-memfd_create-syscall.patch
	0012-Backport-asm-generic-add-memfd_create-system-call-to-unistd.h.patch
	0013-Backport-ARM-wire-up-memfd_create-syscall.patch
"

builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare
	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
	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
	install -Dm644 "$builddir/arch/arm/boot/dt.img" \
		"$pkgdir/boot/dt.img"

	# External modules install
	cd "$builddir"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS" \
		INSTALL_MOD_PATH="$pkgdir" modules_install
}

sha512sums="d0ccc0cde26e6cad7e2b4cffa9d92b4cd7d11e159738935d87cc044a07679e7aed891379fb0e096b12cd1ba7e1855dd72c94ec6da96ff8e936479c59b4d4eb6c  linux-samsung-klte-edfd9dd9be89d15c34f653363a9a3c9108146ca0.tar.gz
2e660d0ac4ffdd5f1a63660a8b61cf83e94122f15126b134a27f58b84fc5424ce4935ef43ca5bff1ec956047b77f7fb7f67e5c1ec976c67712444b370ae6373e  config-samsung-klte.armv7
3b4913415bcfe0ff222969f993890c656c7e12b6ee06532bded485d5201c9855b2c87996c5b63423702b89b6b0ca214b5aceeb402571d9c5af084093c157ccb4  0001_fix_return_address.patch
0fc4b1782dfd3bd94fa9ae8ab74b19713f25e9f4a48dcf830072634f247aa3dd8847f001a3e87e9728e057657efd4ae751510e7c408d9b960c907665ca64e61f  0002_gpu-msm-fix-gcc5-compile.patch
b55fc9ab3e21bc85d66ee08d7e1cd7fdc3b236249212fbcd0055e60ed3e6cef3e4d2b8058a4b7d70c78b2bbc7a11111b55d4d82490b4e3579b8e61657806ac09  0003-Reduce-battery-and-touchscreen-log-spam.patch
a48336bbfead6ad0c84d2fce0c40a3f5530aebdff356a6835cceaf59a50a6f860d2f8027703a92927955fbb18857ba78788e010d017bf67730f069b36e96fe87  0004-fix-video-argb-setting.patch
e3a9b75de461313ee6ba0e547d7fb97d77a749a11416c44b28110673d3a6f7b01305e74f67c06c8cfea97bde5d3d0cd98a457a03a63560125f5bb84f82f116e1  0005-mdss_fb-Always-allow-to-allocate-map-framebuffer-mem.patch
6bdb3acd4a2d10d59ea16a2147735b94f17070aecebfe55fff724c03335bf1a02cc7539c9fe0a59cb944b6835135fe64956617c8b29847397b2f4df68b602063  0006-Fix-xt_connbytes-compile-warning.patch
27f890cf82027649ba742b606a87ce6a82f9685b075bb7b50bffec77221e70434ee78d118d39048350537c5ecdad208658967e492eeeb997e7f6884fa78ac696  0007-usb_gadget-set-random-rndis-host-MAC-address-to-prev.patch
a2bd1b925ba0e1ba0a68dcb134604abbaddf456426a468662d77bc02f0d09d4d07c0c89001c0973e690e1f7eb9c1cfdd37c2d99ed4cc62f3398582d6b51a7013  0008-Backport-vfs-make-O_PATH-file-descriptors-usable-for.patch
47894281412f1c9d4266812f089c3f2434c1636d74245f392d4b0b7532096f8f5bd698715d9e10c7be6c70892af45de2d2c657bd276332442890b94e1159f8f8  0009-Backport-cache-the-value-of-file_inode-in-struct-file.patch
54d71b32b456a3d0abd090c820214240688484f4cadbbde0304bf3cb5246b1aa3893dd85736dc5db2f3d6f9de1f5e84a1adcf5a661a62586452f1002360dc691  0010-Backport-shm-add-sealing-API.patch
c62d67a5fb28082e86a585b4c64891525db640ce694445f0fb19e67fb8dcd9ccbfbcb6fba8692964fac8b026c39cfa558cf316a7e22828ac13f58f5b9938ef09  0011-Backport-shm-add-memfd_create-syscall.patch
cbf6e4bdf53b02f897923d0f6eea5320acc6760c3f3ed762e69928ced7e3b6f2a5355df4a2fccf560f010a4a1968e7ae1a3f62c2db299857d6bcc9715d932822  0012-Backport-asm-generic-add-memfd_create-system-call-to-unistd.h.patch
2f256f6ec9fa7b240dd1f9417622bfd5a8ca4a9ea12cd2ef171540e1425d4171122c0597fe12af913ef60979ef9a3dce8a6c1c523c91020cb9481560901cc92b  0013-Backport-ARM-wire-up-memfd_create-syscall.patch"