maintainer="Barnabas Czeman <barnabas.czeman@postmarketos.org>"
pkgname=lk2nd
pkgver=22.0
pkgrel=2
pkgdesc="Secondary little kernel (lk) bootloader for several Qualcomm devices"
arch="armv7 aarch64"
url="https://github.com/msm8916-mainline/lk2nd"
license="MIT AND BSD-3-Clause AND GPL-2.0-only"
makedepends="
	dtc
	dtc-dev
	gcc-arm-none-eabi
	python3
	py3-asn1-modules
	py3-libfdt
	py3-pycryptodome
"
source="
	$pkgname-$pkgver.tar.gz::https://github.com/msm8916-mainline/lk2nd/archive/refs/tags/$pkgver.tar.gz
"
options="!check !archcheck !tracedeps !strip pmb:cross-native"
# This APKBUILD builds bare metal executable; options are very specific!
# * there are no tests (how do you even test the bootloader?);
# * binaries are "arch-independent"; aarch64 build also produces armv7 binary,
#   because ARM CPUs boot in 32-bit mode;
# * there are no depends for bootloader, it's a kernel and OS in one binary;
# * stripping of unused sections is done in lk2nd's own ld script.

subpackages="
	$pkgname-msm8916
	$pkgname-msm8952
"
if [ "$CARCH" = "aarch64" ]; then
	subpackages="
		$subpackages
		$pkgname-msm8953
		$pkgname-msm8953-signed:msm8953_signed
		$pkgname-msm8996
	"
fi

if [ "$CARCH" = "armv7" ]; then
	subpackages="
		$subpackages
		$pkgname-msm8226
		$pkgname-msm8226-htc-memul:msm8226_htc_memul
		$pkgname-msm8960
		$pkgname-msm8974
		$pkgname-msm8974-htc-m8:msm8974_htc_m8
		$pkgname-msm8974-lg-hammerhead:msm8974_lg_hammerhead
	"
fi

_build() {
	# This builds baremetal executable; distro-specific compiler flags
	#   and optimizations can't be set by build system.
	unset CFLAGS
	unset CXXFLAGS
	unset CPPFLAGS
	unset LDFLAGS
	unset CROSS_COMPILE
	unset CC
	unset CXX

	# ccache and crossdirect "gcc"s are in PATH, get rid of them too,
	#    redefine PATH to be bare minimum
	unset PATH
	export PATH=/usr/sbin:/usr/bin:/sbin:/bin

	local project="$1"; shift

	make LK2ND_VERSION="$pkgver-r$pkgrel-postmarketos" TOOLCHAIN_PREFIX=arm-none-eabi- "$@" "$project"
}

build() {
	_build lk2nd-msm8916
	_build lk2nd-msm8952

	if [ "$CARCH" = "aarch64" ]; then
		# Ignore devices with QCDTB it fixes regression on other devices
		_build lk2nd-msm8953 LK2ND_QCDTBS=""
		_build lk2nd-msm8953 BOOTLOADER_OUT=msm8953-signed LK2ND_QCDTBS="" SIGN_BOOTIMG=1
		_build lk2nd-msm8996
	fi

	if [ "$CARCH" = "armv7" ]; then
		_build lk2nd-msm8974
		_build lk2nd-msm8974 BOOTLOADER_OUT=htc-m8 MKBOOTIMG_ARGS="--ramdisk_offset=0x2000000 --tags_offset=0x1e00000"
		_build lk2nd-msm8974 BOOTLOADER_OUT=lg-hammerhead LK2ND_QCDTBS=""
		_build lk2nd-msm8226
		_build lk2nd-msm8226 BOOTLOADER_OUT=htc-memul SCRATCH_ADDR=0x20000000 SCRATCH_ADDR_512MAP=0x20000000 SCRATCH_SIZE_512MAP=0x10000000
		_build lk2nd-msm8960
	fi
}

package() {
	# main package is empty
	mkdir -p "$pkgdir"
}

msm8916() {
	install -Dm644 "$builddir"/build-lk2nd-msm8916/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8952() {
	install -Dm644 "$builddir"/build-lk2nd-msm8952/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8953() {
	install -Dm644 "$builddir"/build-lk2nd-msm8953/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8953_signed() {
	install -Dm644 "$builddir"/msm8953-signed/build-lk2nd-msm8953/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8974() {
	install -Dm644 "$builddir"/build-lk2nd-msm8974/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8974_htc_m8() {
	install -Dm644 "$builddir"/htc-m8/build-lk2nd-msm8974/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8974_lg_hammerhead() {
	install -Dm644 "$builddir"/lg-hammerhead/build-lk2nd-msm8974/lk2nd.img -t \
		"$subpkgdir"/boot
}

msm8996() {
	install -Dm644 "$builddir"/build-lk2nd-msm8996/lk2nd.img \
		"$subpkgdir"/boot/lk2nd.img
}

msm8226() {
	install -Dm644 "$builddir"/build-lk2nd-msm8226/lk2nd.img \
		"$subpkgdir"/boot/lk2nd.img
}

msm8226_htc_memul() {
	install -Dm644 "$builddir"/htc-memul/build-lk2nd-msm8226/lk2nd.img \
		"$subpkgdir"/boot/lk2nd.img
}

msm8960() {
	install -Dm644 "$builddir"/build-lk2nd-msm8960/lk2nd.img \
		"$subpkgdir"/boot/lk2nd.img
}

sha512sums="
a09854fc967a42c0bcfa273e665839d101cd7ccfb66312f0f5f87109879578aad5875e699d745d04317a1a6c014ad9aae9f33485df09206e79523d88891de85b  lk2nd-22.0.tar.gz
"
