Add device HTC Desire (Bravo) support (#202)

* Add HTC Desire (Bravo) device-specific and kernel package

* Enable kernel virtual terminal support

* Add framebuffer and usb configuration in initfs-hook script

* Add udev required kernel options and set correct framebuffer resolution

* Add touchscreen device rules and enabled kernel logs (dmesg)

* Add deviceinfo_flash_offset_base in deviceinfo and update other offsets

device-htc-bravo/90-android-touch-dev.rules

@@ -0,0 +1,5 @@
+# Touchscreen (use 'weston-calibrator' to calibrate)
+SUBSYSTEM=="input", ATTRS{name}=="synaptics-rmi-touchscreen", \
+ENV{ID_INPUT}="1", ENV{ID_INPUT_TOUCHSCREEN}="1", \
+ENV{WL_CALIBRATION}="1.035377 0.014809 -24.804611 0.057590 0.954340 1.480835"
+

device-htc-bravo/APKBUILD

@@ -0,0 +1,34 @@
+pkgname=device-htc-bravo
+pkgver=1
+pkgrel=1
+pkgdesc="HTC Desire"
+url="https://github.com/postmarketOS"
+arch="noarch"
+license="MIT"
+depends="linux-htc-bravo mkbootimg"
+makedepends=""
+install=""
+subpackages=""
+source="
+	deviceinfo
+	initfs-hook.sh
+	90-android-touch-dev.rules
+"
+options="!check"
+
+build() {
+	return 0
+}
+
+package() {
+	install -D -m644 "$srcdir"/deviceinfo \
+		"$pkgdir"/etc/deviceinfo
+	install -D -m644 "$srcdir"/initfs-hook.sh \
+		"$pkgdir"/etc/postmarketos-mkinitfs/hooks/00-${pkgname}.sh
+	install -D -m644 "$srcdir"/90-android-touch-dev.rules \
+		"$pkgdir"/etc/udev/rules.d/90-android-touch-dev.rules
+}
+
+sha512sums="50e66e8aaefb4b88662fa734c9d8e954086e158a7f46a2c7184902260f288a6d37687131069dc8ba1783455ff4dae68b938a070b3740355215a1bf09232a97e7  deviceinfo
+3ce2d134aa59677e25a160b5985c552fbf048b237169bbeb85e2b8824f734627064b51c097036db10eee0254064d45d804d17372dffcd1ba246938968fe1e225  initfs-hook.sh
+24c8e20cca7d9cff33fe6bac641d0dd4a15d011dd0dbbf1cb1309b11574e6ae7945f4e719646def1a5ba6e8f9607605fcea4a572aa71deb6aaff8498b722cb9d  90-android-touch-dev.rules"

device-htc-bravo/deviceinfo

@@ -0,0 +1,26 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="HTC Desire"
+deviceinfo_manufacturer="HTC"
+deviceinfo_date=""
+deviceinfo_keyboard="false"
+deviceinfo_nonfree="????"
+deviceinfo_dtb=""
+deviceinfo_modules=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_disk="false"
+deviceinfo_external_disk_install="true"
+deviceinfo_flash_methods="fastboot"
+deviceinfo_arch="armhf"
+
+# Fastboot related
+deviceinfo_generate_bootimg="true"
+deviceinfo_flash_offset_base="0x20000000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_cmdline=""
+deviceinfo_flash_pagesize="2048"

device-htc-bravo/initfs-hook.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+
+# set framebuffer resolution
+echo 16 > /sys/class/graphics/fb0/bits_per_pixel
+echo 480,1600 > /sys/class/graphics/fb0/virtual_size
+
+# set usb properties
+echo 4 > /sys/devices/platform/android_usb/usb_function_switch

linux-htc-bravo/APKBUILD

@@ -0,0 +1,109 @@
+# APKBUILD based on linux-vanilla aport. Changes:
+# - disabled module installation
+# - add !check !tracedeps
+# - add xz package (necessary to build)
+#
+# Kernel config based on: arch/arm/configs/bravo_defconfig
+# Changes:
+# - apply patches to compile with gcc6
+# - enable devtmpfs (needed for udev -> touch support in weston)
+# - enable udev required options (https://wiki.gentoo.org/wiki/Udev#Kernel)
+
+_vendor=htc
+_flavor=htc-bravo
+_config="config-${_flavor}.armhf"
+_hash="4bc19919f805777947c243e6c2ed41ece530488b"
+
+pkgname=linux-${_flavor}
+pkgver=3.0.16
+case $pkgver in
+	*.*.*)  _kernver=${pkgver%.*};;
+	*.*) _kernver=$pkgver;;
+esac
+pkgrel=1
+arch="armhf"
+pkgdesc="HTC Desire kernel from spezi77"
+url="https://github.com/spezi77/android_kernel_htc_qsd8k_3.0"
+depends="postmarketos-mkinitfs"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev xz"
+options="!strip !check !tracedeps"
+install=
+source="
+	$pkgname-$_hash.zip::https://github.com/spezi77/android_kernel_htc_qsd8k_3.0/archive/${_hash}.zip
+	$_config
+	compiler-gcc6.h
+"
+subpackages=""
+license="GPL2"
+
+_abi_release=${pkgver}
+_carch="arm"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+ksrcdir="$srcdir/android_kernel_htc_qsd8k_3.0-${_hash}"
+
+prepare() {
+	local _patch_failed=
+	cd "$ksrcdir"
+
+	# first apply patches in specified order
+	for i in $source; do
+		case $i in
+		*.patch)
+			msg "Applying $i..."
+			if ! patch -s -p1 -N -i "$srcdir"/$i; then
+				echo $i >>failed
+				_patch_failed=1
+			fi
+			;;
+		esac
+	done
+
+	if ! [ -z "$_patch_failed" ]; then
+		error "The following patches failed:"
+		cat failed
+		return 1
+	fi
+
+	# gcc6 support
+	cp -v "$srcdir/compiler-gcc6.h" "$ksrcdir/include/linux/" || return 1
+
+	mkdir -p "$srcdir"/build
+	cp "$srcdir"/$_config "$srcdir"/build/.config || return 1
+	yes "" | make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
+		oldconfig
+}
+
+
+
+# this is so we can do: 'abuild menuconfig' to reconfigure kernel
+menuconfig() {
+	cd "$srcdir"/build || return 1
+	echo "--[ menuconfig ]--"
+	make ARCH="$_carch" menuconfig
+	cp .config "$startdir"/$_config
+}
+
+build() {
+	cd "$srcdir"/build
+	unset LDFLAGS
+
+	echo "--[ Build kernel + modules ]--"
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
+		|| return 1
+}
+
+package() {
+	echo "--[ Installing kernel ]--"
+	install -Dm644 "$srcdir/build/arch/arm/boot/zImage" \
+		"$pkgdir/boot/vmlinuz-$_flavor"
+
+	install -D "$srcdir/build/include/config/kernel.release" \
+		"$pkgdir/usr/share/kernel/$_flavor/kernel.release"
+}
+
+sha512sums="f66f850a4abafc1290c09403e27cee530f37e54474532f9cf13c031df30490003c762df9075b2dd29a3b02fe46913be23b4286b0ed16fc320fe9786f0799fb32  linux-htc-bravo-4bc19919f805777947c243e6c2ed41ece530488b.zip
+27ec53afdd9898495ae296b8e98b05401aae3a0bf390ba276f6a878d6bf1ccf3f59da78a5ee50ba4ee0744e4768f71aab53b782511c4f8ad22fefc821a2c815c  config-htc-bravo.armhf
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h"

linux-htc-bravo/compiler-gcc6.h

@@ -0,0 +1,69 @@
+// SOURCE:
+// https://github.com/NextThingCo/CHIP-u-boot/issues/10#issuecomment-287515505
+
+#ifndef __LINUX_COMPILER_H
+#error "Please don't include <linux/compiler-gcc6.h> directly, include <linux/compiler.h> instead."
+#endif
+
+#define __used				__attribute__((__used__))
+#define __must_check			__attribute__((warn_unused_result))
+#define __compiler_offsetof(a, b)	__builtin_offsetof(a, b)
+
+/* Mark functions as cold. gcc will assume any path leading to a call
+   to them will be unlikely.  This means a lot of manual unlikely()s
+   are unnecessary now for any paths leading to the usual suspects
+   like BUG(), printk(), panic() etc. [but let's keep them for now for
+   older compilers]
+
+   Early snapshots of gcc 4.3 don't support this and we can't detect this
+   in the preprocessor, but we can live with this because they're unreleased.
+   Maketime probing would be overkill here.
+
+   gcc also has a __attribute__((__hot__)) to move hot functions into
+   a special section, but I don't see any sense in this right now in
+   the kernel context */
+#define __cold			__attribute__((__cold__))
+
+#define __UNIQUE_ID(prefix) __PASTE(__PASTE(__UNIQUE_ID_, prefix), __COUNTER__)
+
+#ifndef __CHECKER__
+# define __compiletime_warning(message) __attribute__((warning(message)))
+# define __compiletime_error(message) __attribute__((error(message)))
+#endif /* __CHECKER__ */
+
+/*
+ * Mark a position in code as unreachable.  This can be used to
+ * suppress control flow warnings after asm blocks that transfer
+ * control elsewhere.
+ *
+ * Early snapshots of gcc 4.5 don't support this and we can't detect
+ * this in the preprocessor, but we can live with this because they're
+ * unreleased.  Really, we need to have autoconf for the kernel.
+ */
+#define unreachable() __builtin_unreachable()
+
+/* Mark a function definition as prohibited from being cloned. */
+#define __noclone	__attribute__((__noclone__))
+
+/*
+ * Tell the optimizer that something else uses this function or variable.
+ */
+#define __visible __attribute__((externally_visible))
+
+/*
+ * GCC 'asm goto' miscompiles certain code sequences:
+ *
+ *   http://gcc.gnu.org/bugzilla/show_bug.cgi?id=58670
+ *
+ * Work it around via a compiler barrier quirk suggested by Jakub Jelinek.
+ *
+ * (asm goto is automatically volatile - the naming reflects this.)
+ */
+#define asm_volatile_goto(x...)	do { asm goto(x); asm (""); } while (0)
+
+#ifdef CONFIG_ARCH_USE_BUILTIN_BSWAP
+#define __HAVE_BUILTIN_BSWAP32__
+#define __HAVE_BUILTIN_BSWAP64__
+#define __HAVE_BUILTIN_BSWAP16__
+#endif /* CONFIG_ARCH_USE_BUILTIN_BSWAP */
+