_flavor=postmarketos-allwinner
_config="config-$_flavor.$CARCH"

pkgname=linux-$_flavor

pkgver=5.5.0_git20200225
pkgrel=2

arch="aarch64"
pkgdesc="Kernel fork with Pine64 patches"
url="https://gitlab.com/pine64-org/linux/"
makedepends="devicepkg-dev perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev openssl-dev file bison flex rsync"
options="!strip !check !tracedeps"
_commit="ec1031d53ba4de194eab86f2cc2e5cb3f8fe6e81"
_commit_rtl8723cs="1c9c0cb9d335626a66d8063399c6e16751ecc1a8"
source="
	$pkgname-$_commit.tar.gz::https://gitlab.com/pine64-org/linux/-/archive/$_commit/linux-$_commit.tar.gz
	rtl8723cs-$_commit_rtl8723cs.tar.gz::https://github.com/Icenowy/rtl8723cs/archive/$_commit_rtl8723cs.tar.gz
	config-$_flavor.aarch64
	touch-dts.patch
	rtl8723cs.patch
"

subpackages="$pkgname-dev"

license="GPL2"
_abi_release=$_pkgver
_carch=$CARCH
case "$_carch" in
aarch64*) _carch="arm64" ;;
arm*) _carch="arm" ;;
ppc*) _carch="powerpc" ;;
s390*) _carch="s390" ;;
esac

HOSTCC="${CC:-gcc}"
HOSTCC="${HOSTCC#${CROSS_COMPILE}}"

builddir="$srcdir/linux-$_commit"

prepare() {
	default_prepare

	cp -rv "$srcdir"/rtl8723cs-${_commit_rtl8723cs} "$builddir"/drivers/staging/rtl8723cs

	REPLACE_GCCH=0 \
		downstreamkernel_prepare "$srcdir" "$builddir" "$_config" "$_carch" "$HOSTCC"
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-$_flavor" \
		CFLAGS_MODULE=-fno-pic
}

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

	cd "$builddir"
	local _install
	case "$CARCH" in
	aarch64*|arm*)	_install="modules_install dtbs_install" ;;
	*)		_install="modules_install" ;;
	esac

	make -j1 $_install \
		ARCH="$_carch" \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_DTBS_PATH="$pkgdir/usr/share/dtb"
}

dev() {
	provides="linux-headers"
	replaces="linux-headers"

	cd $builddir

	# https://github.com/torvalds/linux/blob/master/Documentation/kbuild/headers_install.rst
	make -j1 headers_install \
		ARCH="$_carch" \
		INSTALL_HDR_PATH="$subpkgdir"/usr
}

sha512sums="e534f16f308cdce4dec45c5cd89aa9336f6f77fb2610ded9796fde5bec78201ee62f56615de2e93be9cac69a3bfda06e28acd59f46234e360c61c8b1709b9d1c  linux-postmarketos-allwinner-ec1031d53ba4de194eab86f2cc2e5cb3f8fe6e81.tar.gz
e4e585ce787301eeee07ff8e45a97343456808a47ed237053f0c83a49b4958a75514def4c5263f4507a282ea90bd2bb3f8f468839f7e5fd05ae947a796c8c6b9  rtl8723cs-1c9c0cb9d335626a66d8063399c6e16751ecc1a8.tar.gz
04e8ddb076fbcf6a111d6e8f19e65cf5cdac57c9591dce9d4d46477d93804090ab7190b2599a857e8a916efa0858109dd1f3c23fc219d06b1f6e6c11ee3857ce  config-postmarketos-allwinner.aarch64
5f403bb1e3e7528954adcba4429768ce26bf13382dc6325ced245babcfb5252d515bea812b9df16d0e5370c9d4e07b4e0267f4c750281faf3cb6ffb29906700c  touch-dts.patch
bf06f931fb543f4bf2f0567902c3021de237fc9684f92af2ed3e956f869d907c9cff1cf3e11a72eb97bda47c8f8b28aff226634f641bdffa04b08d434f419faa  rtl8723cs.patch"