# Kernel config based on: arch/arm/configs/janice_defconfig

pkgname="linux-samsung-i9070"
pkgver=3.0.101
pkgrel=12
pkgdesc="Samsung Galaxy S Advance kernel from Epirex"
arch="armhf"
_carch="arm"
_flavor="samsung-i9070"
url="https://github.com/Epirex/Samsung_STE_Kernel"
license="GPL2"
options="!strip !check !tracedeps"
makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev busybox-static-armhf gcc6"

# Compiler: this kernel was only tested with GCC6. Feel free to make a merge
# request if you find out that it is booting working with newer GCCs as
# well. See <https://postmarketos.org/vendorkernel> for instructions.
if [ "${CC:0:5}" != "gcc6-" ]; then
	CC="gcc6-$CC"
	HOSTCC="gcc6-gcc"
	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
fi

# Source
_repository="Samsung_STE_Kernel"
_commit="ac7219c4b8dcec7bc5a598d42c6be0db4aa36332"
_config="config-${_flavor}.armhf"
source="
	$pkgname-$_commit.tar.gz::https://github.com/Epirex/${_repository}/archive/${_commit}.tar.gz
	$_config
	00_fix_return_address.patch
	01_remove_ramdisks_from_initramfs.patch
	02_reduce_lzo_compression.patch
	03_change_modules_install_dir.patch
	04_change_dhd_firmware_dir.patch
	05_fix_fb_rgb_mode.patch
	compiler-gcc6.h
	init
"
builddir="$srcdir/${_repository}-${_commit}"

prepare() {
	default_prepare

	# Use Alpine's busybox.static instead of the pre-compiled busybox shipped
	# with the source
	cp -v /usr/$(arch_to_hostspec $arch)/bin/busybox.static \
		"$builddir"/usr/u8500_initramfs_files/busybox

	# use custom init script in the initramfs which loads the initramfs from
	# the kernel2 partition ("isorec")
	cp -v "$srcdir"/init "$builddir"/usr/u8500_initramfs_files/init

	# gcc6 support
	cp -v "$srcdir/compiler-gcc6.h" "$builddir/include/linux/"

	# Remove -Werror from all makefiles
	find . -type f -name Makefile -print0 | \
		xargs -0 sed -i 's/-Werror-/-W/g'
	find . -type f -name Makefile -print0 | \
		xargs -0 sed -i 's/-Werror//g'

	cp "$srcdir"/$_config "$builddir"/.config
	make ARCH="$_carch" HOSTCC="$HOSTCC" silentoldconfig
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS"
	# the 'no-pic' flag is necessary to avoid the
	# error 'Unknown symbol _GLOBAL_OFFSET_TABLE_ (err 0)' when loading the module
	make ARCH="$_carch" CC="${CC:-gcc}" CFLAGS_MODULE="-fno-pic" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" modules
}

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

	# Modules
	cd "$builddir"
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1))-postmarketOS" \
		INSTALL_MOD_PATH="$pkgdir" INSTALL_MOD_STRIP=1 \
		modules_install
}

sha512sums="bb8218d803ec27f983449a43d14df75122311609a39e5b57095f4e8933752a2699fa0d4df1674aeee7d6e3a439551dacc9af3cab26b6e3e71f0441a4f16693df  linux-samsung-i9070-ac7219c4b8dcec7bc5a598d42c6be0db4aa36332.tar.gz
63295d5ff1af86765ef35cc175f133be9ba29b9a4e0aac13e69af6dcca1952730db8b4444ca62ba47214ff0c5720aa126e95db0829396ba934d272fdbeb74fb5  config-samsung-i9070.armhf
ea1d3b5a234fa565e3c1a792de48f4fc4e6023d281d303c8e319c7ef28edc5739ab0e4dea0139a41f0a5c7d03e27921ccaa214fd0ac5c72245a094ce60128864  00_fix_return_address.patch
3c8e15644eced6f73c5c7d3df0437f3a9f750f4ec32d744c9e4266ccccef9e38316a898227a898a9fc0696bee0281c0e14312de2944e27a696f18a42deabb383  01_remove_ramdisks_from_initramfs.patch
ef5b912c26fea4ab882592bdf7487942c64b123de8d25d08d976f29743f311742ee2f773bf2d110ddb5095f254dbb0bd4487c5cfce77311929082599199e7ebd  02_reduce_lzo_compression.patch
27bba6d070db6f499d030680c020906fc3238dc60d90a9b2f0f3a355ef15beb227c1cf48b7858156264fe10f7943772ed00a837be36ba4b80de8199f0383e688  03_change_modules_install_dir.patch
47533412cc91d2ead046039c90180ebc459e157017be85dca69cd882a183963448beb973f2cb7eaccbcd35354b0ed6a668131cd39ea30393dd52fd93b7e26815  04_change_dhd_firmware_dir.patch
67278735e21c00d4208e76788d3d99ff1bd9c628608f60a73004f6deb8a4bc75fdf7c1e43108010c57aa6da06aa5e49292b109a2c4421212e181abaca45ea44d  05_fix_fb_rgb_mode.patch
d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
ef01c51c138239a49c1d00ae0074a07fed267d64934cf3d436a8ff057b91692ee2d040a45eacbb0dc62d5017a708c4dca2fadc282c850fa72aeebcfa787e2cbc  init"