New device: Ouya (!80)

Ouya boots. Install instructions are being refined, but device does
boot through fastboot. Hoping to merge into master to encourage others
to contribute to the device.

device/device-ouya-ouya/APKBUILD

@@ -0,0 +1,27 @@
+# Reference: <https://postmarketos.org/devicepkg>
+pkgname=device-ouya-ouya
+pkgver=1
+pkgdesc="Ouya"
+pkgrel=5
+url="https://postmarketos.org"
+arch="armhf"
+license="MIT"
+options="!check !archcheck"
+depends="postmarketos-base linux-ouya-ouya mkbootimg"
+makedepends=""
+install=""
+subpackages=""
+source="deviceinfo initfs-hook.sh fb.modes"
+
+package() {
+	install -Dm644 "$srcdir"/initfs-hook.sh \
+		"$pkgdir"/etc/postmarketos-mkinitfs/hooks/00-${pkgname}.sh
+	install -D -m644 "$srcdir/deviceinfo" \
+		"$pkgdir/etc/deviceinfo"
+	install -D -m644 "$srcdir"/fb.modes \
+		"$pkgdir/etc/fb.modes"
+}
+
+sha512sums="410596c22551c6927d18593e63ee7f3eda9074e31d4a53a8ffc8aad4fdc08fd552306fef3cfb9690f9764a764be3fe64f1146ab913f5df446390b80fa813501a  deviceinfo
+c7253d5d6f53b7acbb1c2358e95ecba86ccbaa2bb5e99ad8db9f59e453209ddad55b13d8c1dc67f634cc4f997283b4079fa1b5b60f6d1440b13f39e5b1646d81  initfs-hook.sh
+bf442fac4dc0594e055ed7a7d8232b5c884e2e77543273e8c4f32b5fe3c199561c86d8a5f665e17406057ca7863fabb93e789fe5e168fcd89d2982e0046232ad  fb.modes"

device/device-ouya-ouya/deviceinfo

@@ -0,0 +1,30 @@
+# Reference: <https://postmarketos.org/deviceinfo>
+# Please use double quotes only. You can source this file in shell scripts.
+
+deviceinfo_format_version="0"
+deviceinfo_name="Ouya"
+deviceinfo_manufacturer="Ouya"
+deviceinfo_date=""
+deviceinfo_keyboard="false"
+deviceinfo_nonfree="????"
+deviceinfo_dtb=""
+deviceinfo_modules=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_storage="false"
+deviceinfo_flash_method="fastboot"
+deviceinfo_arch="armhf"
+
+# Splash screen
+deviceinfo_screen_width="1920"
+deviceinfo_screen_height="1080"
+
+# Fastboot related
+deviceinfo_kernel_cmdline=""
+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"

device/device-ouya-ouya/fb.modes

@@ -0,0 +1,7 @@
+mode "1920x1080-60"
+	# D: 148.500 MHz, H: 67.500 kHz, V: 60.000 Hz
+	geometry 1920 1080 1920 2160 16
+	timings 6734 148 88 36 4 44 5
+	accel false
+	rgba 8/0,8/8,8/16,8/24
+endmode

device/device-ouya-ouya/initfs-hook.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+# fix display for xorg
+echo 0 > /sys/class/graphics/fb0/blank
+echo 16 > /sys/devices/tegradc.0/graphics/fb0/bits_per_pixel
+echo 0 0 > /sys/class/graphics/fb0/pan

device/linux-ouya-ouya/00_fix_return_address.patch

@@ -0,0 +1,70 @@
+this fixes:
+
+  CC      arch/arm/mach-tegra/common.o
+/home/user/build/src/android_kernel_boxer8_ouya-aec3c7f7900554ede9cb34559416e3ee74d0bf36/arch/arm/kernel/return_address.c:62:2: warning: #warning "TODO: return_address sh
+ould use unwind tables" [-Wcpp]
+ #warning "TODO: return_address should use unwind tables"
+  ^~~~~~~
+/home/user/build/src/android_kernel_boxer8_ouya-aec3c7f7900554ede9cb34559416e3ee74d0bf36/arch/arm/kernel/return_address.c:65:7: error: redefinition of 'return_address'
+ void *return_address(unsigned int level)
+       ^~~~~~~~~~~~~~
+In file included from /home/user/build/src/android_kernel_boxer8_ouya-aec3c7f7900554ede9cb34559416e3ee74d0bf36/include/linux/ftrace.h:20:0,
+                 from /home/user/build/src/android_kernel_boxer8_ouya-aec3c7f7900554ede9cb34559416e3ee74d0bf36/arch/arm/kernel/return_address.c:12:
+/home/user/build/src/android_kernel_boxer8_ouya-aec3c7f7900554ede9cb34559416e3ee74d0bf36/arch/arm/include/asm/ftrace.h:48:21: note: previous definition of 'return_address' was here
+ extern inline void *return_address(unsigned int level)
+                     ^~~~~~~~~~~~~~
+make[3]: *** [/home/user/build/src/android_kernel_boxer8_ouya-aec3c7f7900554ede9cb34559416e3ee74d0bf36/scripts/Makefile.build:305: arch/arm/kernel/return_address.o] Error 1
+
+
+original commit message:
+---
+From aeea3592a13bf12861943e44fc48f1f270941f8d Mon Sep 17 00:00:00 2001
+From: Behan Webster <behanw@converseincode.com>
+Date: Wed, 24 Sep 2014 01:06:46 +0100
+Subject: [PATCH] ARM: 8158/1: LLVMLinux: use static inline in ARM ftrace.h
+
+With compilers which follow the C99 standard (like modern versions of gcc and
+clang), "extern inline" does the wrong thing (emits code for an externally
+linkable version of the inline function). In this case using static inline
+and removing the NULL version of return_address in return_address.c does
+the right thing.
+
+Signed-off-by: Behan Webster <behanw@converseincode.com>
+Reviewed-by: Mark Charlebois <charlebm@gmail.com>
+Acked-by: Steven Rostedt <rostedt@goodmis.org>
+Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
+---
+ arch/arm/include/asm/ftrace.h    | 2 +-
+ arch/arm/kernel/return_address.c | 5 -----
+ 2 files changed, 1 insertion(+), 6 deletions(-)
+
+diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
+index 39eb16b0066f2..bfe2a2f5a644e 100644
+--- a/arch/arm/include/asm/ftrace.h
++++ b/arch/arm/include/asm/ftrace.h
+@@ -45,7 +45,7 @@ void *return_address(unsigned int);
+ 
+ #else
+ 
+-extern inline void *return_address(unsigned int level)
++static inline void *return_address(unsigned int level)
+ {
+ 	return NULL;
+ }
+diff --git a/arch/arm/kernel/return_address.c b/arch/arm/kernel/return_address.c
+index fafedd86885dd..f6aa84d5b93c9 100644
+--- a/arch/arm/kernel/return_address.c
++++ b/arch/arm/kernel/return_address.c
+@@ -63,11 +63,6 @@ void *return_address(unsigned int level)
+ #warning "TODO: return_address should use unwind tables"
+ #endif
+ 
+-void *return_address(unsigned int level)
+-{
+-	return NULL;
+-}
+-
+ #endif /* if defined(CONFIG_FRAME_POINTER) && !defined(CONFIG_ARM_UNWIND) / else */
+ 
+ EXPORT_SYMBOL_GPL(return_address);
+

device/linux-ouya-ouya/01_timeconst_fix.patch

@@ -0,0 +1,45 @@
+From 63a3f603413ffe82ad775f2d62a5afff87fd94a0 Mon Sep 17 00:00:00 2001
+From: "H. Peter Anvin" <hpa@linux.intel.com>
+Date: Thu, 7 Feb 2013 17:14:08 -0800
+Subject: [PATCH] timeconst.pl: Eliminate Perl warning
+
+defined(@array) is deprecated in Perl and gives off a warning.
+Restructure the code to remove that warning.
+
+[ hpa: it would be interesting to revert to the timeconst.bc script.
+  It appears that the failures reported by akpm during testing of
+  that script was due to a known broken version of make, not a problem
+  with bc.  The Makefile rules could probably be restructured to avoid
+  the make bug, or it is probably old enough that it doesn't matter. ]
+
+Reported-by: Andi Kleen <ak@linux.intel.com>
+Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
+Cc: Andrew Morton <akpm@linux-foundation.org>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Gustavo Zacarias <gustavo.zacarias@free-electrons.com>
+---
+Patch status: upstream
+
+ kernel/timeconst.pl | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+diff --git a/kernel/timeconst.pl b/kernel/timeconst.pl
+index eb51d76..3f42652 100644
+--- a/kernel/timeconst.pl
++++ b/kernel/timeconst.pl
+@@ -369,10 +369,8 @@ if ($hz eq '--can') {
+ 		die "Usage: $0 HZ\n";
+ 	}
+ 
+-	@val = @{$canned_values{$hz}};
+-	if (!defined(@val)) {
+-		@val = compute_values($hz);
+-	}
++	$cv = $canned_values{$hz};
++	@val = defined($cv) ? @$cv : compute_values($hz);
+ 	output($hz, @val);
+ }
+ exit 0;
+-- 
+2.4.10
+

device/linux-ouya-ouya/APKBUILD

@@ -0,0 +1,67 @@
+# Kernel config based on: arch/arm/configs/cyanogenmod_ouya_defconfig
+
+pkgname="linux-ouya-ouya"
+pkgver=3.1.10
+pkgrel=0
+pkgdesc="Ouya kernel fork"
+arch="armhf"
+_carch="arm"
+_flavor="ouya-ouya"
+url="https://github.com/milaq/android_kernel_boxer8_ouya"
+license="GPL2"
+options="!strip !check !tracedeps"
+makedepends="gcc6 perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev devicepkg-dev"
+# Compiling with GCC6
+if [ "${CC:0:5}" != "gcc6-" ]; then
+	CC="gcc6-$CC"
+	HOSTCC="gcc6-gcc"
+	CROSS_COMPILE="gcc6-$CROSS_COMPILE"
+fi
+
+# Source
+_repository="android_kernel_boxer8_ouya"
+_commit="49f035e65e689f8c227bac7a6c4ecf89ad9158af"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/milaq/${_repository}/archive/${_commit}.tar.gz
+	$_config
+	compiler-gcc6.h
+	00_fix_return_address.patch""
+"
+builddir="$srcdir/${_repository}-${_commit}"
+
+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"
+}
+
+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="7e29ed39c61693d85d344b6eb6180920431364124e8a261f28804585e7362ddbb3ad43c9610bed1ce83b1de7957261e450862081f53de98a5873b5a8aad1748e  linux-ouya-ouya-49f035e65e689f8c227bac7a6c4ecf89ad9158af.tar.gz
+3dcb8513b7eccb6a4f8fc3c5624d54e909ee0690cae07b2e5a6cda90671149529e147a6e1bb6f5cec05cb04175244943be20c9cf21b6adf8697acf04b11d6c8a  config-ouya-ouya.armhf
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+6b7ecfd0939b920f263492484e8d60ff30c55614a750f5efd813a699729e65916e31b106e18bd6ea9858b37753403a6428f3a8d993c18b2459685aa29c1f2055  00_fix_return_address.patch"

device/linux-ouya-ouya/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 */
+