# Kernel config based on: arch/arm64/configs/sdm660_defconfig
maintainer="Alexey Minnekhanov <alexeymin@postmarketos.org>"
_flavor="postmarketos-qcom-sdm660"
pkgname=linux-$_flavor
pkgver=7.0.14
pkgrel=0
pkgdesc="Close to mainline linux kernel for Qualcomm Snapdragon 660 SoC"
arch="aarch64"
url="https://kernel.org/"
license="GPL-2.0-only"
options="!strip !check !tracedeps
	pmb:cross-native
	pmb:kconfigcheck-community
	"
makedepends="
	bison
	clang
	diffutils
	elfutils-dev
	findutils
	flex
	linux-headers
	lld
	llvm
	openssl-dev
	pahole
	perl
	postmarketos-installkernel
	python3
	zstd
	"

_tag="v$pkgver-sdm660"

source="
	linux-$_tag.tar.gz::https://github.com/sdm660-mainline/linux/archive/refs/tags/$_tag.tar.gz
	config-$_flavor.aarch64
"

_carch="arm64"

# for some reason, the directory inside .tar.gz does not match tag name: leading
#     "v" is missing, so we can't use $_tag here
builddir="$srcdir/linux-$pkgver-sdm660"

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

build() {
	unset LDFLAGS

	make ARCH="$_carch" LLVM=1 \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-$_flavor" all Image.gz
}

package() {
	mkdir -p "$pkgdir"/boot

	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"

	install -D "$builddir/arch/arm64/boot/vmlinuz.efi" \
		"$pkgdir/boot/vmlinuz.efi"

	install -D "$builddir/arch/arm64/boot/Image.gz" \
		"$pkgdir/boot/vmlinuz"

	# Reduce package size, install only qcom SDM630/636/660 dtbs.
	# This reduces .apk size from ~46 Mb to ~30 Mb.
	mkdir -p "$pkgdir"/boot/dtbs/qcom
	cp -r "$pkgdir"/boot/dtbs-tmp/qcom/sda660* "$pkgdir"/boot/dtbs/qcom
	cp -r "$pkgdir"/boot/dtbs-tmp/qcom/sdm630* "$pkgdir"/boot/dtbs/qcom
	cp -r "$pkgdir"/boot/dtbs-tmp/qcom/sdm636* "$pkgdir"/boot/dtbs/qcom
	cp -r "$pkgdir"/boot/dtbs-tmp/qcom/sdm660* "$pkgdir"/boot/dtbs/qcom
	rm -r "$pkgdir"/boot/dtbs-tmp

	# "build" is symlink that will be invalid in rootfs (points to /home/pmos...)
	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="
83f7e717b8adc9049e828a27629e7347be2fa0aef6c8404608059410cebaafa0c2659317b615634fbd5d83f9a245bcf1a64e5d2cd0d8e3ec8aeaa3dcf0e51298  linux-v7.0.14-sdm660.tar.gz
f9ab2eaafe23d350b92c511909b86ec3cbfcd07c5947a723231754148b4b1ce16587fe6fddea2d3e6746c522cb1a004d1571f02b50d803081e08bcaf84d2f615  config-postmarketos-qcom-sdm660.aarch64
"
