# APKBUILD based on linux-vanilla aport. Changes:
# - disabled module installation
# - add !check !tracedeps
# - add generation of master DTB with dtbTool
#
# Kernel config based on: arch/arm/configs/msm8610_defconfig
# Changes:
# - apply patches to compile with gcc6
# - enable devtmpfs (needed for udev -> touch support in weston)
# - disable input mouse driver
# - enable generation of dtb

_vendor=huawei
_flavor=huawei-y530
_config="config-${_flavor}.armhf"
_hash="7ad8c6b4ff458fa50a06d3a50cf5909b93d585a2"

pkgname=linux-${_flavor}
pkgver=3.4.0
case $pkgver in
	*.*.*)  _kernver=${pkgver%.*};;
	*.*) _kernver=$pkgver;;
esac
pkgrel=1
arch="armhf"
pkgdesc="Soulfire v1 Kernel for Huawei Y530"
url="https://github.com/EfranDev/android_kernel_huawei_Soulfire"
depends="postmarketos-mkinitfs"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev dtbtool"
options="!strip !check !tracedeps"
install=
source="
	$pkgname-$_hash.tar.gz::${url}/archive/${_hash}.tar.gz
	$_config
	compiler-gcc6.h
	00_fix_return_address.patch
	01_timeconst_fix.patch
	02_gpu-msm-fix-gcc5-compile.patch
	03_avoid_rpmb_read_during_boot.patch
"
subpackages=""
license="GPL2"

_abi_release=${pkgver}
_carch="arm"
HOSTCC="${CC:-gcc}"
HOSTCC="${HOSTCC#${CROSS_COMPILE}}"

ksrcdir="$srcdir/android_kernel_huawei_Soulfire-${_hash}"

prepare() {
	local _patch_failed=
	cd "$ksrcdir"
	make mrproper

	# first apply patches in specified order
	for i in $source; do
		case $i in
		*.patch)
			msg "Applying $i..."
			if ! patch -s -p1 -N -i "$srcdir"/$i; then
				echo $i >>failed
				_patch_failed=1
			fi
			;;
		esac
	done

	if ! [ -z "$_patch_failed" ]; then
		error "The following patches failed:"
		cat failed
		return 1
	fi

	# gcc6 support
	cp -v "$srcdir/compiler-gcc6.h" "$ksrcdir/include/linux/" || return 1

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
	make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
		silentoldconfig
}



# this is so we can do: 'abuild menuconfig' to reconfigure kernel
menuconfig() {
	cd "$srcdir"/build || return 1
	echo "--[ menuconfig ]--"
	make ARCH="$_carch" menuconfig
	cp .config "$startdir"/$_config
}

build() {
	cd "$srcdir"/build
	unset LDFLAGS

	echo "--[ Build kernel ]--"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y \
		|| return 1

	echo "--[ Generate master DTB ]--"
	dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm/boot/dt.img" "arch/arm/boot/"
}

package() {
	echo "--[ Installing kernel ]--"
	install -Dm644 "$srcdir/build/arch/arm/boot/zImage" \
		"$pkgdir/boot/vmlinuz-$_flavor"

	echo "--[ Installing master DTB ]--"
	install -Dm644 "$srcdir/build/arch/arm/boot/dt.img" \
		"$pkgdir/boot/dt.img"

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

sha512sums="a19787f1e9d6862bd9cf5827a18e34749831c79561714003814e8814458d69fc0ba21e0d167c01228dcd455056940a7f80153f82665a3ada2f49a9bd948b2741  linux-huawei-y530-7ad8c6b4ff458fa50a06d3a50cf5909b93d585a2.tar.gz
29e29c8acba4991735aafe368922088e49ba97f2de8fc75c84eb7114848b8e0eaaa80a97395afea7f6f44e454fc53f1a3260137b7008fcf1f3e76c54eeb12f67  config-huawei-y530.armhf
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
ea1d3b5a234fa565e3c1a792de48f4fc4e6023d281d303c8e319c7ef28edc5739ab0e4dea0139a41f0a5c7d03e27921ccaa214fd0ac5c72245a094ce60128864  00_fix_return_address.patch
a2bb98fb8d988bbb659cae00fbaca360828300e9b98b90aed5ee0dd839c3f740696df4094a9021b813cbada06820d115aabed581a47cdd2c947e8d853c20b145  01_timeconst_fix.patch
7be03a9e78b7ac330a54b1f00509caa0621a95c0c55901878ad757f9dd69cc05ba2c8b5ea987063ae1224f92c4d090d515fa5d369e7755181a4871b0d0f82881  02_gpu-msm-fix-gcc5-compile.patch
03a271e09c981c0379382763921ff127566c8f1d3c009e66718bdb3d6e1a0a3e56d68cab2676186899fb6d21236c7207d4f1c94f39c372c535468c7a322e479a  03_avoid_rpmb_read_during_boot.patch"