# Co-Maintainer: Joel Selvaraj <foss@joelselvaraj.com>
# Stable Linux kernel with patches for SDM845 devices
# Kernel config based on: arch/arm64/configs/defconfig and sdm845.config
maintainer="Casey Connolly <kcxt@postmarketos.org>"
_flavor="postmarketos-qcom-sdm845"
pkgname=linux-$_flavor
pkgver=7.1_rc1
pkgrel=4
pkgdesc="Mainline Kernel fork for SDM845 devices"
arch="aarch64"
_carch="arm64"
url="https://gitlab.com/sdm845-mainline/linux"
license="GPL-2.0-only"
options="
	!check
	!strip
	!tracedeps
	pmb:cross-native
	pmb:kconfigcheck-community
	pmb:kconfigcheck-lockdown
"
makedepends="
	bison
	clang
	elfutils-dev
	findutils
	flex
	linux-headers
	lld
	llvm
	openssl-dev
	pahole
	perl
	postmarketos-installkernel
	python3
	zstd
"

_tag="sdm845-7.1-rc1-r0"

# Source
source="
	linux-$_tag.tar.gz::https://gitlab.com/sdm845-mainline/linux/-/archive/$_tag/linux-$_tag.tar.gz
	config-postmarketos-qcom-sdm845.aarch64
	libbpf-Fix-UAF-in-strset__add_str.patch
	enable-dynamic-ftrace.patch
"
builddir="$srcdir/linux-$_tag"

prepare() {
	default_prepare
	cp "$srcdir/config-$_flavor.$CARCH" .config
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" LLVM=1 \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-$_flavor"
}

package() {
	if [ -e "$builddir/arch/$_carch/boot/vmlinuz.efi" ]; then
		# ZBOOT EFI decompressor for EFI booting
		install -Dm644 "$builddir/arch/$_carch/boot/vmlinuz.efi" \
			"$pkgdir/boot/linux.efi"

		# Old GZIP'd kernel image for boot.img compatibility
		install -Dm644 "$builddir/arch/$_carch/boot/vmlinuz" \
			"$pkgdir/boot/vmlinuz"
	else
		echo "WARNING: CONFIG_ZBOOT not enabled!"
		install -Dm644 "$builddir/arch/$_carch/boot/Image.gz" \
			"$pkgdir/boot/vmlinuz"
	fi

	make modules_install dtbs_install \
		ARCH="$_carch" \
		LLVM=1 \
		INSTALL_PATH="$pkgdir"/boot/ \
		INSTALL_MOD_PATH="$pkgdir"/usr/ \
		INSTALL_MOD_STRIP=1 \
		INSTALL_DTBS_PATH="$pkgdir"/boot/dtbs-tmp

	mkdir -p "$pkgdir"/boot/dtbs/qcom
	cp -r "$pkgdir"/boot/dtbs-tmp/qcom/sdm8* "$pkgdir"/boot/dtbs/qcom
	rm -rf "$pkgdir"/boot/dtbs-tmp

	rm -f "$pkgdir"/usr/lib/modules/*/build "$pkgdir"/usr/lib/modules/*/source

	install -D "$builddir"/include/config/kernel.release \
		"$pkgdir"/usr/share/kernel/$_flavor/kernel.release
}

sha512sums="
94da173aaf74dd33ef8ff9015e92759481cd0da5bd8a1e52c8664fd372d48a1155655001ad2e9d26557733c71ae8bc448e4ebdf1372b8f32159907a35f0306a9  linux-sdm845-7.1-rc1-r0.tar.gz
0da9864ae972e81db443b58e990f62bb84bcd721f073c0b947725a7d7c1e630bde1395fa9108ce8264e6b88a6c92f3f52b551b0cd373e6bde54ea56a13a48e9b  config-postmarketos-qcom-sdm845.aarch64
e2555390d48cbbdc32a7d3f0c27599ff88f2fe3e786d1d0086caaa5b092cc3edcb6e95e2fb07034edb3793f6dc954da0662c723202eb7e2c4956c99b50919b12  libbpf-Fix-UAF-in-strset__add_str.patch
e8b595f3e076896dc38f249c8908d58e2e6a858eaa77fe1e680f27db0e76d3d74c0b5dfebb7a4c57d546fee0b0f6eb81a38b20dfd72f985c9d02f28d79a5eceb  enable-dynamic-ftrace.patch
"
