ARM: Prepare Actions Semi S500

Add ARCH_ACTIONS and mach-actions/owl.c for "actions,s500".
Signed-off-by: NAndreas Färber <afaerber@suse.de>

arch/arm/Kconfig

@@ -711,6 +711,8 @@ config ARCH_VIRT
 #
 source "arch/arm/mach-mvebu/Kconfig"
 
+source "arch/arm/mach-actions/Kconfig"
+
 source "arch/arm/mach-alpine/Kconfig"
 
 source "arch/arm/mach-artpec/Kconfig"

arch/arm/Makefile

@@ -151,6 +151,7 @@ textofs-$(CONFIG_ARCH_AXXIA) := 0x00308000
 
 # Machine directory name.  This list is sorted alphanumerically
 # by CONFIG_* macro name.
+machine-$(CONFIG_ARCH_ACTIONS)		+= actions
 machine-$(CONFIG_ARCH_ALPINE)		+= alpine
 machine-$(CONFIG_ARCH_ARTPEC)		+= artpec
 machine-$(CONFIG_ARCH_AT91)		+= at91

arch/arm/mach-actions/Kconfig

+menuconfig ARCH_ACTIONS
+	bool "Actions Semi SoCs"
+	depends on ARCH_MULTI_V7
+	select ARM_AMBA
+	select ARM_GIC
+	select ARM_GLOBAL_TIMER
+	select CACHE_L2X0
+	select CLKSRC_ARM_GLOBAL_TIMER_SCHED_CLOCK
+	select COMMON_CLK
+	select GENERIC_IRQ_CHIP
+	select HAVE_ARM_SCU if SMP
+	select HAVE_ARM_TWD if SMP
+	select OWL_TIMER
+	help
+	  This enables support for the Actions Semiconductor S500 SoC family.

arch/arm/mach-actions/Makefile

+obj-y += owl.o

arch/arm/mach-actions/owl.c

+/*
+ * Copyright (C) 2017 Andreas Färber
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#include <linux/of_platform.h>
+#include <asm/mach/arch.h>
+
+static const char * const owl_dt_compat[] = {
+	"actions,s500",
+	NULL
+};
+
+DT_MACHINE_START(OWL, "Actions Semi Owl platform")
+	.dt_compat	= owl_dt_compat,
+	.l2c_aux_val	= 0,
+	.l2c_aux_mask	= ~0,
+MACHINE_END