steamlink WIP

device/device-valve-steamlink/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-valve-steamlink"
+pkgdesc="Valve SteamLink"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="armv7"
+options="!check !archcheck"
+depends="postmarketos-base linux-valve-steamlink mesa-dri-swrast"
+makedepends="devicepkg-dev kexec-tools-static"
+source="
+	deviceinfo
+	factory_test.sh
+	kexec_load.ko
+"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+	install -D -m755 "$srcdir"/factory_test.sh \
+		"$pkgdir"/boot/steamlink/factory_test/run.sh
+	install -D -m755 "$srcdir"/kexec_load.ko \
+		"$pkgdir"/boot/kexec_load.ko
+
+	# Package a minimum kexec system
+	install -D -m755 /usr/sbin/kexec \
+		"$pkgdir"/boot/kexec
+	install -D -m644 /lib/libc.musl-armv7.so.1 \
+		"$pkgdir"/boot/lib/libc.musl-armv7.so.1
+	install -D -m644 /usr/lib/liblzma.so.5 \
+		"$pkgdir"/boot/usr/lib/liblzma.so.5
+	install -D -m644 /lib/libz.so.1 \
+		"$pkgdir"/boot/lib/libz.so.1
+}
+
+
+sha512sums="176578a532d435c801aaeea5a01ff4a2be93faf4239792e46c35d63570fa9b4ff847a09d368056a0bc7345f8acdfc4115fc5e1f614c1fd51b7ea8e095543b549  deviceinfo
+1b74ed9ec2548151eda93ea22105e8f99b40cfa346b4e86877ca19d2be3b577976cacb3b908079778fdbfbc001400a94a6f0d20fc1b0f94f555886ed85e726ed  factory_test.sh
+ae836b2aac526e0c0e65e6ea160e799afeec451943b4bb8df78ab8f246456ca34b468dcdfa97393592a17717d8e81b2f4b93e291e07b89b178b8c59ed5c1a900  kexec_load.ko"

device/device-valve-steamlink/deviceinfo

+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Valve SteamLink"
+deviceinfo_manufacturer="Valve"
+deviceinfo_codename="valve-steamlink"
+deviceinfo_date=""
+deviceinfo_dtb="berlin2cd-dongle"
+deviceinfo_modules_initfs=""
+deviceinfo_arch="armv7"
+
+# Device related
+deviceinfo_keyboard="true"
+deviceinfo_external_storage="true"
+deviceinfo_screen_width="1920"
+deviceinfo_screen_height="1080"
+deviceinfo_dev_touchscreen=""
+deviceinfo_dev_touchscreen_calibration=""
+deviceinfo_dev_keyboard=""
+disable_dhcpd="true"
+
+# Bootloader related
+deviceinfo_flash_method="none"
+

device/device-valve-steamlink/factory_test.sh

+#!/bin/sh
+
+# This script gets executed in the linux rootfs on the steamlink itself
+
+echo "Resetting crashcounter"
+fts-set steamlink.crashcounter 0
+
+echo "Mounting stuff"
+cd /mnt/disk
+mkdir proc sys dev
+mount -t proc proc /mnt/disk/proc
+mount -o rbind /sys /mnt/disk/sys
+mount -o rbind /dev /mnt/disk/dev
+
+echo "Inserting kexec module into valve kernel"
+insmod /mnt/disk/kexec_load.ko
+
+chroot /mnt/disk /kexec -h
+
+echo "Loading pmos kernel"
+flavor="valve-steamlink"
+chroot /mnt/disk /kexec \
+	-l /vmlinuz-${flavor} \
+	--initrd /initramfs-${flavor} \
+	--dtb /dtb-${flavor}.dtb \
+	--command-line "init=/init.sh rw console=tty0 console=ttyS0,115200 no_console_suspend panic=10 consoleblank=0 loglevel=1 PMOS_NO_OUTPUT_REDIRECT"
+
+echo "Rebooting into pmos"
+chroot /mnt/disk /kexec -e
+
+echo "If you're reading this then something went wrong"

device/linux-valve-steamlink/APKBUILD

+# Reference: <https://postmarketos.org/vendorkernel>
+# Kernel config based on: arch/arm/configs/bg2cd_penguin_mlc_defconfig
+
+pkgname="linux-valve-steamlink"
+pkgver=3.8.13
+pkgrel=0
+pkgdesc="Valve kernel from the SteamLink SDK"
+arch="armv7"
+_carch="arm"
+_flavor="valve-steamlink"
+url="https://github.com/ValveSoftware/steamlink-sdk/"
+license="GPL-2.0-only"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev devicepkg-dev"
+
+# Compiler: latest GCC from Alpine
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+_repository="steamlink-sdk"
+_commit="9181b082be53c64daa83f36c7093a783fd07b464"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/ValveSoftware/${_repository}/archive/${_commit}.tar.gz
+	$_config
+	gcc7-give-up-on-ilog2-const-optimizations.patch
+	gcc8-fix-put-user.patch
+	kernel-use-the-gnu89-standard-explicitly.patch
+"
+builddir="$srcdir/${_repository}-${_commit}/kernel"
+
+prepare() {
+	default_prepare
+	downstreamkernel_prepare "$srcdir" "$builddir" "$_config" "$_carch" "$HOSTCC"
+}
+
+build() {
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS" modules
+
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS" berlin2cd-dongle.dtb
+}
+
+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 $PWD!"
+		return 1
+	fi
+	cd "$builddir"
+	make -j1 modules_install \
+		ARCH="$_carch" \
+		INSTALL_MOD_PATH="$pkgdir/" \
+		INSTALL_DTBS_PATH="$pkgdir/usr/share/dtb"
+
+	install -D "$builddir"/arch/arm/boot/dts/berlin2cd-dongle.dtb \
+		"$pkgdir"/usr/share/dtb/berlin2cd-dongle.dtb
+}
+
+sha512sums="b904a7b9148ec99e402985d4af5f0ffb1cd2aa6b6216dc106e107d06062d30e09b1ae4802114ecfbbeaecaa938dfa763adf67ba5027be8f3d7a1f720c94063bd  linux-valve-steamlink-9181b082be53c64daa83f36c7093a783fd07b464.tar.gz
+99246639421405ca5ca0ee9dc86dafe9b1f51fc9d229e69fe727caeb718c368d31458b522868af51b6b7f32f1c10649574cb6d5d49a432a051c098b80d6eb85e  config-valve-steamlink.armv7
+77eba606a71eafb36c32e9c5fe5e77f5e4746caac292440d9fb720763d766074a964db1c12bc76fe583c5d1a5c864219c59941f5e53adad182dbc70bf2bc14a7  gcc7-give-up-on-ilog2-const-optimizations.patch
+197d40a214ada87fcb2dfc0ae4911704b9a93354b75179cd6b4aadbb627a37ec262cf516921c84a8b1806809b70a7b440cdc8310a4a55fca5d2c0baa988e3967  gcc8-fix-put-user.patch
+ad0182a483791fc88e058838bc331b2f04a75ba291e763767babdb815efadfc3b4fda97e69e2e3f00a426cabea088e35297a92bd287592597d1e309be68ee92c  kernel-use-the-gnu89-standard-explicitly.patch"

device/linux-valve-steamlink/gcc7-give-up-on-ilog2-const-optimizations.patch

+../../.shared-patches/linux/gcc7-give-up-on-ilog2-const-optimizations.patch
\ No newline at end of file

device/linux-valve-steamlink/gcc8-fix-put-user.patch

+../../.shared-patches/linux/gcc8-fix-put-user.patch
\ No newline at end of file

device/linux-valve-steamlink/kernel-use-the-gnu89-standard-explicitly.patch

+../../.shared-patches/linux/kernel-use-the-gnu89-standard-explicitly.patch
\ No newline at end of file

temp/kexec-tools-static/APKBUILD

+# Contributor: Duncan Guthrie <dguthrie@posteo.net>
+# Maintainer: Duncan Guthrie <dguthrie@posteo.net>
+pkgname=kexec-tools-static
+pkgver=2.0.16
+pkgrel=1
+pkgdesc="Directly boot into a new kernel over a currently running one"
+url="https://kernel.org/pub/linux/utils/kernel/kexec/"
+arch="all"
+license="GPL-2.0"
+depends="xz zlib"
+makedepends="zlib-dev xz-dev linux-headers"
+subpackages="$pkgname-doc"
+source="https://www.kernel.org/pub/linux/utils/kernel/kexec/kexec-tools-$pkgver.tar.xz
+	kexec-tools-2.0.16-fix-config-sub.patch
+	aarch64-build-fix.patch"
+builddir="$srcdir/kexec-tools-$pkgver"
+options="!check"
+
+build() {
+	cd "$builddir"
+	LDFLAGS=-static ./configure \
+		--build=$CBUILD \
+		--host=$CHOST \
+		--prefix=/usr \
+		--sysconfdir=/etc \
+		--mandir=/usr/share/man \
+		--localstatedir=/var \
+		--with-zlib \
+		--with-lzma 
+	make
+}
+
+package() {
+	cd "$builddir"
+	make DESTDIR="$pkgdir" install
+}
+
+sha512sums="f2f06e7702fef20c8d7d6aabe1b264e2e2689e5c38cc00dbc2186dd7fa0479edb2dc9e307dd2ad7f03db47015e966e577f11576172604ef01c1bcca471fe2c24  kexec-tools-2.0.16.tar.xz
+3c87540309dceda4c074d5822fd1a5d709ad533baed91dfd77aa64ebfe3850fc099c4b3d2bcc887c81ae53dc5940d17ccf34be25609beb37ed5ef7ed75862d43  kexec-tools-2.0.16-fix-config-sub.patch
+77c2c33c28b85640646836da1709e898e1d94b92e0a83217664c64cb6606e10471235a396f30f8cae1315d67804851fc9cf8f201bc0b9e1d1f1f8344cd0e448d  aarch64-build-fix.patch"

temp/kexec-tools-static/aarch64-build-fix.patch

+diff --git a/purgatory/arch/arm64/Makefile b/purgatory/arch/arm64/Makefile
+index 636abea..9aad157 100644
+--- a/purgatory/arch/arm64/Makefile
++++ b/purgatory/arch/arm64/Makefile
+@@ -3,6 +3,7 @@ arm64_PURGATORY_EXTRA_CFLAGS = \
+ 	-mcmodel=large \
+ 	-fno-stack-protector \
+ 	-fno-asynchronous-unwind-tables \
++	-fno-PIC \
+ 	-Wundef \
+ 	-Werror-implicit-function-declaration \
+ 	-Wdeclaration-after-statement \

temp/kexec-tools-static/kexec-tools-2.0.16-fix-config-sub.patch

+--- kexec-tools-2.0.16.old/config/config.sub	2016-12-09 09:42:06.000000000 +0000
++++ kexec-tools-2.0.16/config/config.sub	2017-12-13 19:35:19.248376862 +0000
+@@ -124,6 +124,7 @@
+ case $maybe_os in
+   nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+   linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
++  linux-musl* | \
+   knetbsd*-gnu* | netbsd*-gnu* | \
+   kopensolaris*-gnu* | \
+   storm-chaos* | os2-emx* | rtmk-nova*)