# Reference: <https://postmarketos.org/vendorkernel>
# Kernel config based on: arch/arm64/configs/tissot_defconfig

pkgname="linux-xiaomi-tissot"
pkgver=3.18.71
pkgrel=2
pkgdesc="Xiaomi A1 kernel fork"
arch="aarch64"
_carch="arm64"
_flavor="xiaomi-tissot"
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 gcc6"

# Compiler: GCC 6 (doesn't boot when compiled with GCC 8):
# Unhandled fault: alignment fault (0x96000061) at 0xffffff800062a03c
# PC is at smp2p_init_header+0x28/0x38
if [ "${CC:0:5}" != "gcc6-" ]; then
	CC="gcc6-$CC"
	HOSTCC="gcc6-gcc"
	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
fi

# Source
_repository="android_kernel_xiaomi_msm8953"
_commit="80cb3f607eb78280642c3b9b6e89f676e9c263bf"
_config="config-${_flavor}.${arch}"
source="
	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
	$_config
	fix-include-msm_isp.patch
	fix-include-msm_camera_i2c.patch
	fix-rndis_ipa.patch
	fix_u_f_header.patch
	fix_usb_gadget_function.patch
	fix_msm_dba.patch
	init-reverse-skip_initramfs.patch
	init-ignore-dm-if-skip_initramfs.patch
	tweak-warn-once-skb_release_head_state.patch
	fix-xorg-mdss-update-fb-info.patch
	fix-ramoops-header.patch
"
builddir="$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="$((pkgrel + 1 ))-postmarketOS"
	msg "Combine DTB and Image.gz"
	msg "(Image.gz-dtb without DTB itself ¯\_(ツ)_/¯)"
	rm "$builddir/arch/$_carch/boot/Image.gz-dtb"
	cat "$builddir/arch/$_carch/boot/Image.gz" \
		"$builddir/arch/$_carch/boot/dts/qcom/msm8953-qrd-sku3-tissot.dtb" \
		> "$builddir/arch/$_carch/boot/Image.gz-dtb"
}

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
}

sha512sums="f0bba3e19e8cad92cabaeba63db75af9b2cf1e5fa7e79c7688c487c55db0230840ab838628b8aaf6a39a03d403237ab224aa94fac88eb538b82cb7909f35e43d  linux-xiaomi-tissot-80cb3f607eb78280642c3b9b6e89f676e9c263bf.tar.gz
54ad078eb8b54037fb1d4191a45a8ebded6ac5e95e7bea41d0f20a75feed5b0dd0654ee1fd17a942939f8953e4f25781559e5f8fb170c58d2e2e6783f0405375  config-xiaomi-tissot.aarch64
a7acfa838563cb3a0da85b0b580b8b6873e87a21c83d060bbacf0f159672353db65d2f5d1d74cfd3b8640336db1b56aa4868dea8dd5eaba6366bc7050624608f  fix-include-msm_isp.patch
e4a9fca760b22c71ecc6b749afeec0bf2e5571bcde9c3d25612402ee406e2ccdebc6fb1e353851190e948bcda00ed37f7d1bb6c26c08557fda02f37811c80cc7  fix-include-msm_camera_i2c.patch
c35a7337ddee41ea355bc3040e258c111b92c62413e355d7fe1329f516f8bdf724bab0cb8f426aee96fc776a8297e7a3ec5414120248538e0ee0ac3265790fbd  fix-rndis_ipa.patch
b408f157cc025d410b38f5aee9be977e670e1ac3f195f6c3a6681446fa0c3887067d62a4f729cfcd058fab42fca355b0265764dc2d21515f6e023ed025f55d41  fix_u_f_header.patch
1f23466d1a864f2d2c67ae4250b0c166ecb7755779bbdad6732808a001cc2826cc1d013c2281d2ca1d5abd7d60d13783f0b9f11bb8359971f2b30b911e627220  fix_usb_gadget_function.patch
7e765cb696fa8c3dfbc305b05cbf1fad85fb9572613d5391e945341dae5974a745f4906c795dc841e5562b19ab77d5257f9741e514af2c2573aa4bb8b262ce51  fix_msm_dba.patch
32f8180ae59351835f91ead8e38ae4933658c13bfe62bdbb32de82aecb16e1ff9e96333f4f129423ae8be4dc3210ee3bbf3fd0ea199df0f397ecb2f2efe37bcb  init-reverse-skip_initramfs.patch
d97b343970bba978b0c99222e01d3a66abba9d7fe5725705021b4ab2895dd18df2c68bfbb894f05f2894714b958e1aa63ed5e09d19cbbff1204fdc7f246891b4  init-ignore-dm-if-skip_initramfs.patch
170a979908156f740d32fc3a8f74c2b2cb54420e12b81f2373fed1eb095159f1e03d3c24116a345f41ccd927fd93594b0a0e4b58a57ffe6869288f1ec030078c  tweak-warn-once-skb_release_head_state.patch
a277af28a718f5caf94257005393aa92d62c96110a8ec6368ff62f2e0d871b69c56c4ce00174db637204d53fa63ad3a79b8d6141713dca0878e1f06fe0379caa  fix-xorg-mdss-update-fb-info.patch
5abf30392e44372a01936ba59d9f392e835632fbd2356a4c50997652cd5c4ad4c142814145ab9263367558668a3b6cf5600886cd69d3108e6bd0718de10b0b6e  fix-ramoops-header.patch"