i9195: add initial support

Current status:

* Red glare on screen (probably need kernel patch)
* No touch support
* Networking on USB does not work, but it does boot normally

aports/device/device-samsung-i9195/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-samsung-i9195"
+pkgdesc="Samsung Galaxy S4 Mini"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="noarch"
+options="!check"
+depends="linux-samsung-i9195 mkbootimg"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="fee4fa2b03f253ccb568fa53a4264df24f0e932341f381337f73b6e255959ce754574792d173898643ce0d3c1e734b032e56139cf259aad02201fdb7916bfefc  deviceinfo"

aports/device/device-samsung-i9195/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="Samsung Galaxy S4 Mini"
+deviceinfo_manufacturer="Samsung"
+deviceinfo_date=""
+deviceinfo_dtb=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_disk_install="false"
+deviceinfo_arch="armhf"
+
+# Device related
+deviceinfo_keyboard="false"
+deviceinfo_external_disk="true"
+deviceinfo_screen_width="960"
+deviceinfo_screen_height="540"
+deviceinfo_dev_touchscreen=""
+deviceinfo_dev_touchscreen_calibration=""
+deviceinfo_dev_keyboard=""
+
+# Bootloader related
+deviceinfo_flash_method="heimdall-bootimg"
+deviceinfo_kernel_cmdline="androidboot.hardware=qcom user_debug=22 msm_rtb.filter=0x3F ehci-hcd.park=3 androidboot.bootdevice=msm_sdcc.1 buildvariant=userdebug"
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="false"
+deviceinfo_flash_offset_base="0x80200000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x02000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_pagesize="2048"
+deviceinfo_flash_heimdall_partition_kernel="BOOT"
+deviceinfo_flash_heimdall_partition_system=""
+

aports/device/linux-samsung-i9195/01_msm-fix-perf_trace_counters.patch

+From e41494c15d4df342854ac3d2940f5d6ac3158212 Mon Sep 17 00:00:00 2001
+From: Bryan Huntsman <bryanh@codeaurora.org>
+Date: Mon, 3 Jun 2013 18:48:08 -0700
+Subject: [PATCH] msm: fix in-tree compilation for perf_trace_counters
+
+In-tree compilation for arch/arm/mach-msm/perf_trace_counters.c was
+hitting this error:
+
+    In file included from arch/arm/mach-msm/perf_trace_counters.h:127:0,
+                     from arch/arm/mach-msm/perf_trace_counters.c:14:
+    include/trace/define_trace.h:79:43: fatal error: ./perf_trace_counters.h: No such file or directory
+
+Instructions for TRACE_INCLUDE_FILE in include/trace/define_trace.h say
+"the path is relative to define_trace.h, not the file including it".
+Fix in-tree compilation by making the path relative to define_trace.h.
+
+Signed-off-by: Bryan Huntsman <bryanh@codeaurora.org>
+---
+ arch/arm/mach-msm/perf_trace_counters.h | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/arch/arm/mach-msm/perf_trace_counters.h b/arch/arm/mach-msm/perf_trace_counters.h
+index ce7e336aa40d..8f77badf42ac 100644
+--- a/arch/arm/mach-msm/perf_trace_counters.h
++++ b/arch/arm/mach-msm/perf_trace_counters.h
+@@ -121,7 +121,6 @@ TRACE_EVENT(sched_switch_with_ctrs,
+ 
+ #endif
+ #undef TRACE_INCLUDE_PATH
+-#define TRACE_INCLUDE_PATH .
++#define TRACE_INCLUDE_PATH ../../arch/arm/mach-msm
+ #define TRACE_INCLUDE_FILE perf_trace_counters
+ #include <trace/define_trace.h>
+-

aports/device/linux-samsung-i9195/02_gpu-msm-fix-gcc5-compile.patch

+source:
+https://github.com/ShinySide/HispAsian_Lollipop_G6/commit/b7756b6fc4bb728722b14d2dfdbaf1dc843812e9
+
+* These need to be static to avoid these errors:
+
+drivers/built-in.o: In function `.LANCHOR1':
+msm_iommu_sec.c:(.data+0x9298): undefined reference to `kgsl_iommu_sync_lock'
+msm_iommu_sec.c:(.data+0x929c): undefined reference to `kgsl_iommu_sync_unlock'
+Makefile:877: recipe for target '.tmp_vmlinux1' failed
+make: *** [.tmp_vmlinux1] Error 1
+
+Signed-off-by: Chet Kener <Cl3Kener@gmail.com>
+
+--- a/drivers/gpu/msm/kgsl_iommu.c
++++ b/drivers/gpu/msm/kgsl_iommu.c
+@@ -1010,7 +1010,7 @@ static int kgsl_iommu_init_sync_lock(struct kgsl_mmu *mmu)
+  *
+  * Return - int - number of commands.
+  */
+-inline unsigned int kgsl_iommu_sync_lock(struct kgsl_mmu *mmu,
++static inline unsigned int kgsl_iommu_sync_lock(struct kgsl_mmu *mmu,
+ 						unsigned int *cmds)
+ {
+ 	struct kgsl_device *device = mmu->device;
+@@ -1080,7 +1080,7 @@ inline unsigned int kgsl_iommu_sync_lock(struct kgsl_mmu *mmu,
+  *
+  * Return - int - number of commands.
+  */
+-inline unsigned int kgsl_iommu_sync_unlock(struct kgsl_mmu *mmu,
++static inline unsigned int kgsl_iommu_sync_unlock(struct kgsl_mmu *mmu,
+ 					unsigned int *cmds)
+ {
+ 	struct kgsl_device *device = mmu->device;

aports/device/linux-samsung-i9195/APKBUILD

+# Kernel config based on: arch/arm/configs/samsung_serrano_defconfig
+
+pkgname="linux-samsung-i9195"
+pkgver=3.4.113
+pkgrel=0
+pkgdesc="Samsung Samsung Galaxy S4 Mini kernel fork"
+arch="armhf"
+_carch="arm"
+_flavor="samsung-i9195"
+url="https://kernel.org"
+license="GPL2"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev xz"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+_repository="android_kernel_samsung_msm8930-common"
+_commit="c4b753a5d44f42cee2191ecf5504bccdf53c838d"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
+	$_config
+	compiler-gcc6.h
+	01_msm-fix-perf_trace_counters.patch
+	02_gpu-msm-fix-gcc5-compile.patch
+"
+builddir="$srcdir/${_repository}-${_commit}"
+
+prepare() {
+	default_prepare
+
+	# gcc6 support
+	cp -v "$srcdir/compiler-gcc6.h" "$builddir/include/linux/"
+
+	# Remove -Werror from all makefiles
+	find . -type f -name Makefile -print0 | \
+		xargs -0 sed -i 's/-Werror-/-W/g'
+	find . -type f -name Makefile -print0 | \
+		xargs -0 sed -i 's/-Werror//g'
+
+	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
+	cp "$srcdir"/$_config "$builddir"/.config
+	yes "" | make ARCH="$_carch" HOSTCC="$HOSTCC" oldconfig
+}
+
+menuconfig() {
+	cd "$builddir"
+	make ARCH="$_carch" menuconfig
+	cp .config "$startdir"/$_config
+}
+
+build() {
+	unset LDFLAGS
+	make ARCH="$_carch" CC="${CC:-gcc}" \
+		KBUILD_BUILD_VERSION="$((pkgrel + 1 ))-postmarketOS"
+}
+
+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
+}
+
+sha512sums="7ce3621f50e0c615795eed17fa5178ba2d2c3165b9267f80f088305f8cb591c704129d841cb4c82496f185a59669dccf61b527dbf21b548a923bdb96b666dc2d  linux-samsung-i9195-c4b753a5d44f42cee2191ecf5504bccdf53c838d.tar.gz
+c94c1004566d1d30b014eefe9df73921a38e90a460911e1216821097b82277edd0e6858576e7b68731d69ac7a8cf8e1287280d7eba500e82220d62c5f385125b  config-samsung-i9195.armhf
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+f85ced49ee2f2461adea68dac0a10452aa809a7d41d869092d94eb085344919a9a385dec0c48011f4601ca4f441700f7fe49075c7eca4fb2d66b01f7d413ccb7  01_msm-fix-perf_trace_counters.patch
+7be03a9e78b7ac330a54b1f00509caa0621a95c0c55901878ad757f9dd69cc05ba2c8b5ea987063ae1224f92c4d090d515fa5d369e7755181a4871b0d0f82881  02_gpu-msm-fix-gcc5-compile.patch"

aports/device/linux-samsung-i9195/compiler-gcc6.h

+// 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 */
+