# Kernel config based on: arch/arm64/configs/sdm660_defconfig
maintainer="Alexey Minnekhanov <alexeymin@postmarketos.org>"
_flavor="postmarketos-qcom-sdm660"
pkgname=linux-$_flavor
pkgver=6.17.4
pkgrel=1
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="
	bash
	bison
	findutils
	flex
	openssl-dev
	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="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-$_flavor" all Image.gz
}

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

	make modules_install dtbs_install \
		ARCH="$_carch" \
		INSTALL_PATH="$pkgdir"/boot \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_MOD_STRIP=1 \
		INSTALL_DTBS_PATH="$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

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

	install -D "$builddir/include/config/kernel.release" \
		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
}
sha512sums="
27b33c08162ff76f29095641b3913f61f301728eb3d341be4d8e03614a136783a7ee79842154614d11c76a84a06c6f2f0014f0ffeb378f7cd760e5e6fe138a88  linux-v6.17.4-sdm660.tar.gz
dcc2a71ec15550718572c4af0b8faf137f8e761028ef3872ad732e28f7720b6bdf216f33fbe33ca859a83f5721fe3e26bcfbccfbbdeec23a6d571f745bae7543  config-postmarketos-qcom-sdm660.aarch64
"
