# 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=1
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 !tracedeps
	pmb:cross-native
	pmb:kconfigcheck-community"
makedepends="
	bison
	clang
	findutils
	flex
	installkernel
	lld
	llvm
	openssl-dev
	perl
	python3
	zstd
"

_tag="sdm845-7.1-rc1-r0"
_defconfig="defconfig"

# Source
source="
	linux-$_tag.tar.gz::https://gitlab.com/sdm845-mainline/linux/-/archive/$_tag/linux-$_tag.tar.gz
	config-postmarketos-qcom-sdm845.aarch64
"
builddir="$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
36d173adc2e9225cfa110ddb6775cd5fc24c4712b469df06d61d4d095f0af5ea1e062ac88f951a5d27715389b109ed7bf17a23e207d3d7fe5a69d2eb277d24cd  config-postmarketos-qcom-sdm845.aarch64
"
