# APKBUILD based on linux-vanilla aport. Changes:
# - disabled module installation
# - add !check !tracedeps
# - package: just install zimage and kernel.release, because the kernel config
#	does not generate modules or dtb files
# - do not create -dev subpackage (makes no sense without module support)
#
# Kernel config based on: arch/arm/configs/fairphone-perf_defconfig
# Changes:
# - enable devtmpfs (needed for udev -> touch support in weston)
# - disable ANDROID_PARANOID_NETWORK (removes network restrictions)

_vendor=fairphone
_flavor=fairphone-fp2
_hash="8c73c363d1cd11624ddda9a1ef08b9dc7a5569e4"
_config="config-${_flavor}.armhf"

pkgname=linux-${_flavor}
pkgver=3.4.0
case $pkgver in
	*.*.*)  _kernver=${pkgver%.*};;
	*.*) _kernver=$pkgver;;
esac
pkgrel=5
arch="armhf"
pkgdesc="LineageOS kernel for Fairphone 2"
url="https://github.com/LineageOS/android_kernel_fairphone_msm8974"
depends="postmarketos-mkinitfs"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev python2 dtbtool"
options="!strip !check !tracedeps"
install=
source="
	https://github.com/LineageOS/android_kernel_fairphone_msm8974/archive/${_hash}.zip
	${_config}
	compiler-gcc6.h
	00_fix_return_address.patch
	00_Input-lifebook-use-static-inline-instead-of-inline-i.patch
	00_Input-sentelic-use-static-inline-instead-of-inline.patch
	gpu-msm-fix-gcc5-compile.patch
"

subpackages=""
license="GPL2"

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

ksrcdir="$srcdir/android_kernel_fairphone_msm8974-${_hash}"

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

	# 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/"

	mkdir -p "$srcdir"/build
	cp "$srcdir"/$_config "$srcdir"/build/.config
	echo "--[ silentoldconfig ]--"
	yes "" | make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
		oldconfig
}



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

build() {
	cd "$srcdir"/build
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y
	echo "--[ Build modules ]--"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y \
		modules

	dtbTool -s 2048 -p "scripts/dtc/" -o "arch/arm/boot/dt.img" "arch/arm/boot/"
}

package() {
	install -Dm644 "$srcdir/build/arch/arm/boot/dt.img" \
		"$pkgdir/boot/dt.img"

	install -Dm644 "$srcdir/build/arch/arm/boot/zImage" \
		"$pkgdir/boot/vmlinuz-$_flavor"

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

	cd "$srcdir"/build
	unset LDFLAGS
	echo "--[ Installing modules ]--"
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" CONFIG_NO_ERROR_ON_MISMATCH=y \
		INSTALL_MOD_PATH="$pkgdir" modules_install
}

sha512sums="acddc069c3e8aa5b58c82eddc6e335946695e618fe5756e81a730cbcfbba0fd256b6e46024c46a66f8551d67608edd6d55b5a7cfa8ea98b064ca1ddaa1d7238d  8c73c363d1cd11624ddda9a1ef08b9dc7a5569e4.zip
ab13d17b292081ecaa607e52b424eedea3e2c02678e5b329f3c8b5267cc844b4c40e7cd7244ede0d4fa4d5722b9e0a1cfd23498b34859b5702534d51954dc41a  config-fairphone-fp2.armhf
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
ea1d3b5a234fa565e3c1a792de48f4fc4e6023d281d303c8e319c7ef28edc5739ab0e4dea0139a41f0a5c7d03e27921ccaa214fd0ac5c72245a094ce60128864  00_fix_return_address.patch
5c49f6ff6773a7dc3067d2b1359648fe7a9f758b6c068d6fa69d9aaf24a291ba8022c960317d926aabc11d020a71b20c4e81a6fcf9b21ef66d9b6d065bae23e9  00_Input-lifebook-use-static-inline-instead-of-inline-i.patch
2d77d90b501aa8afbf81629e73fc0a2055b373942975f58277e43f398d0835b3dbbff4a1118137ec82873ba90a254fea87c1d73ba7708578f1779bd0b4c6ff2d  00_Input-sentelic-use-static-inline-instead-of-inline.patch
7be03a9e78b7ac330a54b1f00509caa0621a95c0c55901878ad757f9dd69cc05ba2c8b5ea987063ae1224f92c4d090d515fa5d369e7755181a4871b0d0f82881  gpu-msm-fix-gcc5-compile.patch"