Nextbit Robin booting. SSH over USB working (#1145)

device/device-nextbit-robin/APKBUILD

+# Reference: <https://postmarketos.org/devicepkg>
+pkgname="device-nextbit-robin"
+pkgdesc="Nextbit Robin"
+pkgver=0.1
+pkgrel=0
+url="https://postmarketos.org"
+license="MIT"
+arch="noarch"
+options="!check"
+depends="linux-nextbit-robin mkbootimg mesa-dri-swrast"
+makedepends="devicepkg-dev"
+source="deviceinfo"
+
+build() {
+	devicepkg_build $startdir $pkgname
+}
+
+package() {
+	devicepkg_package $startdir $pkgname
+}
+
+sha512sums="ec1ead18fdf62acb0f45591b86c5f189b772a2bea555c9e0fef61e37ebbeb6aba5f919bc772bb8965ee3b03924875f24a6d8aff489345826651314132c207086  deviceinfo"

device/device-nextbit-robin/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="Nextbit Robin"
+deviceinfo_manufacturer="Nextbit"
+deviceinfo_date=""
+deviceinfo_dtb=""
+deviceinfo_modules_initfs=""
+deviceinfo_external_disk_install="false"
+deviceinfo_arch="aarch64"
+
+# Device related
+deviceinfo_keyboard="false"
+deviceinfo_external_disk="false"
+deviceinfo_screen_width="1080"
+deviceinfo_screen_height="1920"
+deviceinfo_dev_touchscreen=""
+deviceinfo_dev_touchscreen_calibration=""
+deviceinfo_dev_keyboard=""
+
+# Bootloader related
+deviceinfo_flash_method="fastboot"
+deviceinfo_kernel_cmdline="console=ttyHSL0,115200,n8 androidboot.console=ttyHSL0 androidboot.hardware=qcom user_debug=31 msm_rtb.filter=0x37 ehci-hcd.park=3 lpm_levels.sleep_disabled=1 boot_cpus=0-3"
+deviceinfo_generate_bootimg="true"
+deviceinfo_bootimg_qcdt="false"
+deviceinfo_flash_offset_base="0x00000000"
+deviceinfo_flash_offset_kernel="0x00008000"
+deviceinfo_flash_offset_ramdisk="0x01000000"
+deviceinfo_flash_offset_second="0x00f00000"
+deviceinfo_flash_offset_tags="0x00000100"
+deviceinfo_flash_pagesize="4096"
+

device/linux-nextbit-robin/01_psci_err.patch

+diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c
+index f1dbca7..425cf78 100644
+--- a/arch/arm64/kernel/psci.c
++++ b/arch/arm64/kernel/psci.c
+@@ -113,9 +113,14 @@  static void psci_power_state_unpack(u32 power_state,
+  * The following two functions are invoked via the invoke_psci_fn pointer
+  * and will not be inlined, allowing us to piggyback on the AAPCS.
+  */
+-static noinline int __invoke_psci_fn_hvc(u64 function_id, u64 arg0, u64 arg1,
+-					 u64 arg2)
++static noinline int __invoke_psci_fn_hvc(u64 _function_id, u64 _arg0,
++					 u64 _arg1, u64 _arg2)
+ {
++	register u64 function_id asm("x0") = _function_id;
++	register u64 arg0 asm("x1") = _arg0;
++	register u64 arg1 asm("x2") = _arg1;
++	register u64 arg2 asm("x3") = _arg2;
++
+ 	asm volatile(
+ 			__asmeq("%0", "x0")
+ 			__asmeq("%1", "x1")
+@@ -128,9 +133,14 @@  static noinline int __invoke_psci_fn_hvc(u64 function_id, u64 arg0, u64 arg1,
+ 	return function_id;
+ }
+ 
+-static noinline int __invoke_psci_fn_smc(u64 function_id, u64 arg0, u64 arg1,
+-					 u64 arg2)
++static noinline int __invoke_psci_fn_smc(u64 _function_id, u64 _arg0,
++					 u64 _arg1, u64 _arg2)
+ {
++	register u64 function_id asm("x0") = _function_id;
++	register u64 arg0 asm("x1") = _arg0;
++	register u64 arg1 asm("x2") = _arg1;
++	register u64 arg2 asm("x3") = _arg2;
++
+ 	asm volatile(
+ 			__asmeq("%0", "x0")
+ 			__asmeq("%1", "x1") 

device/linux-nextbit-robin/APKBUILD

+# Kernel config based on: arch/arm64/configs/lineageos_ether_defconfig
+
+pkgname="linux-nextbit-robin"
+pkgver=3.10.108
+pkgrel=0
+pkgdesc="Nextbit Robin kernel fork"
+arch="aarch64"
+_carch="arm64"
+_flavor="nextbit-robin"
+url="https://kernel.org"
+license="GPL2"
+options="!strip !check !tracedeps"
+makedepends="perl sed installkernel bash gmp-dev bc linux-headers elfutils-dev"
+HOSTCC="${CC:-gcc}"
+HOSTCC="${HOSTCC#${CROSS_COMPILE}}"
+
+# Source
+_repository="android_kernel_nextbit_msm8992"
+_commit="8b8773362248bdba3224a1d92e76c5b9004519d6"
+_config="config-${_flavor}.${arch}"
+source="
+	$pkgname-$_commit.tar.gz::https://github.com/LineageOS/${_repository}/archive/${_commit}.tar.gz
+	$_config
+	compiler-gcc6.h
+	01_psci_err.patch
+"
+builddir="$srcdir/${_repository}-${_commit}"
+
+prepare() {
+	default_prepare
+
+	# gcc6 support
+	cp -v "$srcdir/compiler-gcc6.h" "$builddir/include/linux/"
+
+	# Remove -Werror from all makefiles
+	local i
+	local makefiles="$(find . -type f -name Makefile)
+		$(find . -type f -name Kbuild)"
+	for i in $makefiles; do
+		sed -i 's/-Werror-/-W/g' "$i"
+		sed -i 's/-Werror//g' "$i"
+	done
+	# Prepare kernel config ('yes ""' for kernels lacking olddefconfig)
+	cp "$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="f2bffe51d021cbe7e5eb3f33486ee3544ca4477e4d21bfb2cffb5743e16dd24a02dbbb93daa45f43ed1825607b730fb39a1b7dace7b24f99a844dca577ba52ad  linux-nextbit-robin-8b8773362248bdba3224a1d92e76c5b9004519d6.tar.gz
+2b1bfe206071852b5866cd932f290650e57866386dbf80f992d9229d287fa5910724ad9486280e0f8c0885adae77ac5cf9803fdc5d5594b524a87ceddd947d7e  config-nextbit-robin.aarch64
+d80980e9474c82ba0ef1a6903b434d8bd1b092c40367ba543e72d2c119301c8b2d05265740e4104ca1ac5d15f6c4aa49e8776cb44264a9a28dc551e0d1850dcc  compiler-gcc6.h
+8740861d5e125a5f9faa144e6fe6d7e6413250664547f217bf8a02e1bea77f9809582c952cdd3618fcbf150979faab57540ecc3370d6734cc82bbd62afdf15b1  01_psci_err.patch"

device/linux-nextbit-robin/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 */
+