# Maintainer: Thiago Foganholi <thiagaoplusplus@outlook.com>
# Co-Maintainer: Newbyte <newbyte@disroot.org>
# Kernel config based on: arch/arm/configs/exynos_defconfig

pkgname=linux-postmarketos-exynos4
pkgver=6.4.2
pkgrel=0
pkgdesc="Mainline kernel fork for Samsung Exynos4 devices"
arch="armv7"
_carch="arm"
_flavor="${pkgname#linux-}"
url="https://gitlab.com/exynos4-mainline/linux"
license="GPL-2.0-only"
options="!strip !check !tracedeps
	pmb:cross-native
	pmb:kconfigcheck-community
	"
makedepends="
	bash
	bison
	busybox-static-armv7
	findutils
	flex
	gmp-dev
	mpc1-dev
	mpfr-dev
	openssl-dev
	perl
	postmarketos-installkernel
	xz
"

# Source
_config="config-$_flavor.$arch"
case $pkgver in
	*.*.*)	_kernver=${pkgver%.0};;
	*.*)	_kernver=$pkgver;;
esac
_tag="v${pkgver//_/-}-exynos4"
source="
	$pkgname-$_tag.tar.bz2::$url/-/archive/$_tag/linux-$_tag.tar.bz2
	$_config
	initramfs.list
	init
"
builddir="$srcdir/linux-$_tag"

prepare_isorec() {
	# https://wiki.postmarketos.org/wiki/Boot_process#isorec
	cp -v /usr/$(arch_to_hostspec $arch)/bin/busybox.static \
		"$builddir"/usr/
	cp -v "$srcdir"/init "$builddir"/usr/
	cp -v "$srcdir"/initramfs.list "$builddir"/usr/
}

prepare() {
	default_prepare
	prepare_isorec
	cp -v "$srcdir/$_config" .config
}

build() {
	unset LDFLAGS
	make ARCH="$_carch" CC="${CC:-gcc}" KCFLAGS="-Wno-array-bounds" \
		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
}

package() {
	mkdir -p "$pkgdir"/boot
	make zinstall modules_install dtbs_install \
		ARCH="$_carch" \
		INSTALL_MOD_STRIP=1 \
		INSTALL_PATH="$pkgdir"/boot \
		INSTALL_MOD_PATH="$pkgdir" \
		INSTALL_DTBS_PATH="$pkgdir/boot/dtbs"

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

sha512sums="
23cdbf3ed735704ec14b5f032afd64b0200413c1d17d2917ffa9c11d6087d63830ddce38a2b3b6e70da55fe85265a0325f01f42092ac8a464c4bc9cdcfb773d7  linux-postmarketos-exynos4-v6.4.2-exynos4.tar.bz2
b313bfb8deacfa48af10c0d0a3d7fca996ca68af7542471080ca46f53d7562a0893383e5779b611b590e63d76d7eec9c134c620dfe522409d4200a01ac367bcd  config-postmarketos-exynos4.armv7
aaff0332b90e1f9f62de1128cace934717336e54ab09de46477369fa808302482d97334e43a85ee8597c1bcab64d3484750103559fea2ce8cd51776156bf7591  initramfs.list
09f1f214a24300696809727a7b04378887c06ca6f40803ca51a12bf2176a360b2eb8632139d6a0722094e05cb2038bdb04018a1e3d33fc2697674552ade03bee  init
"