samsung-i927: new device (Samsung Captive Glide) (!195)

Runs an only slightly patched mainline kernel.

For now:
- flashing works (only SD card boot and kernel flashing tested)
- boots
- screen works
- keyboard works
- touch works
- accelerated Xorg works (OGL not tested, xf86-video-tegra works,
  but sometims X crashes with invalid instruction error - open top menus in
  Xfce file manager to reproduce)
- SD card works (troubles with GPIO insertion detection)
- USB should work, not tested
- WiFi should work, also not tested (a lot of warnings during boot)
- Sound needs configuration
- battery needs kernel driver (max8922/max8907c)
- touchkey doesn't work - very strange hardware here...
- cameras don't work - no DT bindings, but all drivers there

Other functionality is broken/not tested.

[skip ci]: already built successfully in CI

device/device-samsung-i927/APKBUILD

@@ -0,0 +1,45 @@
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-samsung-i927"
+pkgdesc="Samsung Captivate Glide"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="armhf"
+options="!check !archcheck"
+depends="postmarketos-base
+	linux-samsung-i927
+	mkbootimg
+	alsa-utils
+	libdrm-grate
+	mesa-grate
+	mesa-grate-gl
+	mesa-grate-egl
+	mesa-grate-dri-swrast
+	mesa-grate-dri-tegra
+	xf86-video-opentegra
+	libvdpau-tegra"
+makedepends="devicepkg-dev"
+subpackages="$pkgname-nonfree-firmware:nonfree_firmware"
+source="deviceinfo
+	modules-load.conf"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+
+	install -D -m644 "$srcdir"/modules-load.conf \
+		"$pkgdir"/etc/modules-load.d/00-${pkgname}.conf
+}
+
+nonfree_firmware() {
+	pkgdesc="bcm4330 wifi firmware"
+	depends="firmware-samsung-i927"
+	mkdir "$subpkgdir"
+}
+
+sha512sums="7edacfb24ec729bcf354ad3516aca0b17bceadef4090d848d30fb2fa77494a50d4e5901033222094c758a8b81d97710df1d460fd613541da11f566110ea4b9b0  deviceinfo
+d8ce60ea7acaabf627ddca2f0887a4cda46f313b7aaf7934bef2fef8a6e0798ccefab849e4571e4e3fcd06ae34c1a6efe3b58b401e2e443416f6200e6d4ea769  modules-load.conf"

device/device-samsung-i927/deviceinfo

@@ -0,0 +1,35 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Samsung Captivate Glide"
+deviceinfo_manufacturer="Samsung"
+deviceinfo_codename="samsung-i927"
+deviceinfo_date=""
+deviceinfo_dtb=""
+deviceinfo_modules_initfs=""
+deviceinfo_arch="armhf"
+
+# Device related
+deviceinfo_keyboard="true"
+deviceinfo_external_storage="true"
+deviceinfo_screen_width="480"
+deviceinfo_screen_height="800"
+deviceinfo_dev_touchscreen=""
+deviceinfo_dev_touchscreen_calibration=""
+deviceinfo_dev_keyboard=""
+
+# Bootloader related
+deviceinfo_flash_method="heimdall-bootimg"
+deviceinfo_kernel_cmdline="console=pstore console=tty0 fbcon=rotate:1 brcmfmac.alternative_fw_path=postmarketos gpt ramoops.mem_address=0x25000000 ramoops.mem_size=0x100000 ramoops.mem_type=1 ramoops.dump_oops=1 ramoops.ftrace_size=0 ramoops.pmsg_size=0 ramoops.console_size=0x10000 ramoops.record_size=0x80000 PMOS_NO_OUTPUT_REDIRECT"
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="false"
+deviceinfo_flash_offset_base="0x10000000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_pagesize="2048"
+deviceinfo_flash_heimdall_partition_kernel="LNX"
+deviceinfo_flash_heimdall_partition_system="APP"
+

device/device-samsung-i927/modules-load.conf

@@ -0,0 +1,5 @@
+# This file contains the names of kernel modules that should be loaded
+# at boot time, one per line. Lines beginning with "#" are ignored.
+
+# wifi module
+brcmfmac

device/linux-samsung-i927/APKBUILD

@@ -0,0 +1,75 @@
+# Reference: <https://postmarketos.org/vendorkernel>
+# Kernel config based on: arch/arm/configs/tegra_defconfig
+
+pkgname="linux-samsung-i927"
+pkgver=4.20.4
+pkgrel=0
+pkgdesc="Samsung Captivate Glide kernel fork"
+arch="armhf"
+_carch="arm"
+_flavor="samsung-i927"
+url="https://kernel.org"
+license="GPL-2.0-only"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev devicepkg-dev flex bison openssl-dev"
+
+# Compiler: latest GCC from Alpine
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+_repository="linux"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$pkgver.tar.gz::https://kernel.org/pub/linux/kernel/v4.x/linux-$pkgver.tar.gz
+	$_config
+	kernel.patch
+"
+builddir="$srcdir/${_repository}-${pkgver}"
+
+prepare() {
+	default_prepare
+
+	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
+	cp "$srcdir/$_config" "$builddir"/.config
+	yes "" | make -C "$builddir" ARCH="$_carch" HOSTCC="$HOSTCC" oldconfig
+}
+
+build() {
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+}
+
+package() {
+	cat "$builddir/arch/arm/boot/zImage" \
+		"$builddir/arch/arm/boot/dts/tegra20-glide.dtb" \
+		> "$builddir/arch/arm/boot/zImage-dtb"
+
+	# 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 modules_install \
+		ARCH="$_carch" \
+		INSTALL_MOD_PATH="$pkgdir"
+}
+
+sha512sums="5f9eb065932e404091dd9e4afd5a92b6382ddbc81488684c42981cdfe227da9a423356c19ec236ca1a9a7f4bf042cf351aa8b3cd4f7488b0d8b1245d69221a5c  linux-samsung-i927-4.20.4.tar.gz
+fb556670c376c85f6c0ad0105179298e8d7b1564e32c7a50152924112407dcc294b5e322eb207e801f61e81f9511e28c52dcd663152c2e5a1ea1a9e0100d09ba  config-samsung-i927.armhf
+c65a89a07b20b3720d6187c6049f215823b07fd4ba647984691bf37d2488a71f4e00ce8bc9521c499b7e15f13fb1473289a8eeea42899d5a6c0c3247b0a94549  kernel.patch"

firmware/firmware-samsung-i927/APKBUILD

@@ -0,0 +1,28 @@
+pkgname=firmware-samsung-i927
+pkgver=1
+pkgrel=1
+pkgdesc="Samsung SGH-i927 Firmware"
+url="https://github.com/The-Covenant"
+arch="armhf"
+license="proprietary"
+options="!check"
+
+# Source
+_fw_file="bcm4330_sta.bin"
+_nvram_file="nvram_net.txt"
+_commit="73d33be8ff2323eb51aa7f8c4916e946850e8bfe"
+_url_fw="https://github.com/The-Covenant/proprietary_vendor_samsung/raw/$_commit/i927/proprietary/$_fw_file"
+_url_nvram="https://github.com/The-Covenant/proprietary_vendor_samsung/raw/$_commit/i927/proprietary/$_nvram_file"
+
+source=""
+source="$source $pkgname-$_commit-$_fw_file::$_url_fw";
+source="$source $pkgname-$_commit-$_nvram_file::$_url_nvram";
+
+package() {
+	install -Dm644 "$srcdir/$pkgname-$_commit-$_fw_file" \
+		"$pkgdir/lib/firmware/postmarketos/brcm/brcmfmac4330-sdio.bin"
+	install -Dm644 "$srcdir/$pkgname-$_commit-$_nvram_file" \
+		"$pkgdir/lib/firmware/postmarketos/brcm/brcmfmac4330-sdio.txt"
+}
+sha512sums="3ae32e0c27a9143fa07e823c414639387aced9bdc149762806059b9dd3ebd3358675657a3cae25572db4e40e4f682d446aadd87c7d459269fc7d2ccf99a2c449  firmware-samsung-i927-73d33be8ff2323eb51aa7f8c4916e946850e8bfe-bcm4330_sta.bin
+1fac44f6c1d312cefc5c5bc2b66be41c877a0be6448359b95e7a966553acbf249b193a531a1d4dbdb1d8ec58dd43215d9f3d6c869374612593eb88a70d1a6d93  firmware-samsung-i927-73d33be8ff2323eb51aa7f8c4916e946850e8bfe-nvram_net.txt"