Porting to Moto G 2014 "titan"

- Use samsung-i9100 as template

device-motorola-titan/90-android.rules

@@ -0,0 +1,8 @@
+# udev rules file
+# All device names can be read from weston's logfile (/tmp/weston.log in postmarketOS)
+
+# Touchscreen (use 'weston-calibrator' to calibrate)
+SUBSYSTEM=="input", ATTRS{name}=="sec_touchscreen", \
+ENV{ID_INPUT}="1", ENV{ID_INPUT_TOUCHSCREEN}="1" \
+ENV{WL_CALIBRATION}="0.954174 0.016888 -2.626083 -0.006031 1.011271 14.175903"
+

device-motorola-titan/ACTIVATE_DOWNLOAD_MODE.txt

@@ -0,0 +1,3 @@
+- make sure, the device is powered off
+- hold power + volume down
+- let go of the power button, as soon as something appears

device-motorola-titan/ACTIVATE_RECOVERY.txt

@@ -0,0 +1,3 @@
+- make sure, the device is really powered off
+- hold volume up + home + power button
+- when the samsung logo appears, only hold volume up + home

device-motorola-titan/APKBUILD

@@ -0,0 +1,27 @@
+pkgname=device-samsung-i9100
+pkgver=1
+pkgrel=2
+pkgdesc="Samsung Galaxy SII"
+url="https://github.com/postmarketOS"
+arch="noarch"
+license="MIT"
+depends="linux-samsung-i9100"
+makedepends=""
+install=""
+subpackages=""
+source="deviceinfo 90-android.rules"
+options="!check"
+
+build() {
+	return 0
+}
+
+package() {
+	install -D -m644 "$srcdir/deviceinfo" \
+		"$pkgdir/etc/deviceinfo"
+	install -D -m644 "$srcdir"/90-android.rules \
+		"$pkgdir"/etc/udev/rules.d/90-android.rules
+}
+
+sha512sums="f2dfe6b848ab751eea2d3aad82c214985b7910865a2911a7be843e44c5479299cb66c768925b4452e8dbdd84efd6bd8b69eb2e2dc49cfa27fc8a3e189ddf68a5  deviceinfo
+8aead706ddb118a44de7d049f07d10a27e727d17724058d132e4ec4fa73fed29c9ccfe03f02aca459c922ec0fbba24e171fe3c76e33f7c5462631e3dd5506e36  90-android.rules"

device-motorola-titan/deviceinfo

@@ -0,0 +1,26 @@
+# This document format is a draft.
+# You can source it in shell scripts.
+# Use only double quotes.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Galaxy SII"
+deviceinfo_manufacturer="Samsung"
+deviceinfo_date=""
+deviceinfo_keyboard="false"
+deviceinfo_nonfree="????"
+deviceinfo_dtb=""
+deviceinfo_modules=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_disk="true"
+deviceinfo_external_disk_install="true"
+deviceinfo_flash_methods="heimdall"
+deviceinfo_arch="armhf"
+
+
+# You can for example extract these from an existing boot.img
+deviceinfo_flash_offset_base=""
+deviceinfo_flash_offset_kernel=""
+deviceinfo_flash_offset_ramdisk=""
+deviceinfo_flash_offset_second=""
+deviceinfo_flash_offset_tags=""
+deviceinfo_flash_pagesize=""

device-motorola-titan/initfs-hook.sh

@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# set framebuffer resolution
+cat /sys/class/graphics/fb0/modes > /sys/class/graphics/fb0/mode

linux-motorola-titan/APKBUILD

@@ -0,0 +1,131 @@
+# Based on linux-lg-mako. Changes:
+# - add findutils makedepend (necessary for the initramfs)
+# - it builds an initramfs - do not use ramdisk.cpio and
+#	ramdisk-recovery-device.cpio, in there, always use the
+#	initramfs from the recovery partition ("isorec")
+# - directly boot to that initramfs, not only when the recovery
+#	key combination was pressed.
+# - use Alpine's busybox-static instead of the pre-compiled
+#	binary, that comes with the source
+#
+# Kernel config changes, based on: arch/arm/configs/i9100_defconfig
+# - enable devtmpfs (needed for udev -> touch support in weston)
+# - change compression from CONFIG_KERNEL_LZMA=y to
+#	CONFIG_KERNEL_GZIP=y (so it works with busybox)
+
+# This must be built in the target chroot, so busybox.static can
+# be used.
+_pmb_build_in_native_chroot="false"
+
+_vendor=samsung
+_flavor=samsung-i9100
+_hash="349a3e91e76d17e67ef6213e1f6712e700695631"
+_config="config-${_flavor}.armhf"
+
+pkgname=linux-${_flavor}
+pkgver=3.0.101
+case $pkgver in
+	*.*.*)  _kernver=${pkgver%.*};;
+	*.*) _kernver=$pkgver;;
+esac
+pkgrel=5
+arch="armhf"
+pkgdesc="Samsung Galaxy SII kernel from LineageOS"
+url="https://github.com/LineageOS/android_kernel_samsung_smdk4412"
+depends="postmarketos-mkinitfs"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev
+findutils busybox-static"
+options="!strip !check !tracedeps"
+install=
+source="
+	$pkgname-$_hash.zip::https://github.com/LineageOS/android_kernel_samsung_smdk4412/archive/${_hash}.zip
+	$_config
+	compiler-gcc6.h
+	init
+"
+subpackages=""
+license="GPL2"
+
+_abi_release=${pkgver}
+_carch="arm"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+ksrcdir="$srcdir/android_kernel_samsung_smdk4412-${_hash}"
+
+prepare() {
+	local _patch_failed=
+	cd "$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
+
+	# Use Alpine's busybox.static instead of the pre-compiled busybox shipped
+	# with the source
+	cp -v /bin/busybox.static "$ksrcdir"/usr/galaxys2_initramfs_files/busybox
+
+	# do not use ramdisk.cpio and ramdisk-recovery-device.cpio, always use
+	# the initramfs from the recovery partition ("isorec"), so we can build
+	# it later and independently from the kernel. also directly boot that
+	# partition, not only when the recovery key combination was used.
+	cd "$ksrcdir"/usr/
+	mv galaxys2_initramfs.list galaxys2_initramfs.list_old
+	grep -v "../../ramdisk" galaxys2_initramfs.list_old > galaxys2_initramfs.list \
+		|| return 1
+	cp -v "$srcdir"/init "$ksrcdir"/usr/galaxys2_initramfs_files/init || return 1
+
+	# 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
+	make -C "$ksrcdir" O="$srcdir"/build ARCH="$_carch" HOSTCC="$HOSTCC" \
+		silentoldconfig
+}
+
+
+
+# this is so we can do: 'abuild menuconfig' to reconfigure kernel
+menuconfig() {
+	cd "$srcdir"/build || return 1
+	make ARCH="$_carch" menuconfig
+	cp .config "$startdir"/$_config
+}
+
+build() {
+	cd "$srcdir"/build
+	unset LDFLAGS
+
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-Alpine" \
+		|| return 1
+}
+
+package() {
+	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="28198b1312d66a1af28e112f3252aa9fbbbee8bf373776c556cdbc1c75517072a1eec6522717df0b2bc4f6b5f06b9ce07d2cb29a2de07fc56c4ea072f4d46c82  linux-samsung-i9100-349a3e91e76d17e67ef6213e1f6712e700695631.zip
+7ce82e81ca8d472f01f8097e3a434fe0130d66b16b29ed3d4c5ce94870fb4efe3b5e79523802b078fcdc737e5a1ee6351bc8427d1271a098eab8e9f35b95e6b1  config-samsung-i9100.armhf
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+dd4094d5f4ec281d32f12af88cb22a782e497c8e52f69cf60b73ac7d6171fc95f1f8040b3d0ad2ff3f016d22ac1d91c5b522e5d03203534a76742bc55a082af5  init"

linux-motorola-titan/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 */
+

linux-motorola-titan/init

@@ -0,0 +1,29 @@
+#!/stage1/busybox sh
+
+# Samsung kernels come with their own initramfs, which extract and load another
+# initramfs. Usually that depends on the recovery key combination being pressed
+# or not. For simplicity, we always boot the recovery image (from the recovery
+# partition) here.
+
+_PATH="$PATH"
+export PATH=/stage1
+
+busybox cd /
+busybox date >>boot.txt
+exec >>boot.txt 2>&1
+busybox rm init
+busybox mount -t proc proc /proc
+busybox mount -t sysfs sysfs /sys
+
+# always use the "isorec"-style lzop compressed initramfs
+# from the recovery partition
+load_image=/stage1/isorec.cpio
+busybox lzop -dc /dev/block/mmcblk0p6 > ${load_image}
+busybox cpio -i < ${load_image}
+
+busybox umount /sys
+busybox umount /proc
+busybox date >>boot.txt
+busybox rm -fr /stage1 /dev/*
+export PATH="${_PATH}"
+exec /init