ARM: zx: add basic support for ZTE ZX296702

Add basic code for ZTE ZX296702 platform.

[arnd: removed unused zx296702_init_machine function, and changed
       l2c aux val to default]

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/Kconfig

@@ -989,6 +989,8 @@ source "arch/arm/mach-vt8500/Kconfig"
 
 source "arch/arm/mach-w90x900/Kconfig"
 
+source "arch/arm/mach-zx/Kconfig"
+
 source "arch/arm/mach-zynq/Kconfig"
 
 # Definitions to make life easier

arch/arm/Makefile

@@ -207,6 +207,7 @@ machine-$(CONFIG_ARCH_VERSATILE)	+= versatile
 machine-$(CONFIG_ARCH_VEXPRESS)		+= vexpress
 machine-$(CONFIG_ARCH_VT8500)		+= vt8500
 machine-$(CONFIG_ARCH_W90X900)		+= w90x900
+machine-$(CONFIG_ARCH_ZX)		+= zx
 machine-$(CONFIG_ARCH_ZYNQ)		+= zynq
 machine-$(CONFIG_PLAT_SPEAR)		+= spear
 

arch/arm/mach-zx/Kconfig

@@ -0,0 +1,18 @@
+menuconfig ARCH_ZX
+	bool "ZTE ZX family" if ARCH_MULTI_V7
+	help
+	  Support for ZTE ZX-based family of processors. TV
+	  set-top-box processor is supported. More will be
+	  added soon.
+
+if ARCH_ZX
+
+config SOC_ZX296702
+	def_bool y
+	select ARM_GIC
+	select ARM_GLOBAL_TIMER
+	select HAVE_ARM_SCU if SMP
+	select HAVE_ARM_TWD if SMP
+	help
+	  Support for ZTE ZX296702 SoC which is a dual core CortexA9MP
+endif

arch/arm/mach-zx/Makefile

@@ -0,0 +1 @@
+obj-$(CONFIG_SOC_ZX296702) += zx296702.o

arch/arm/mach-zx/zx296702.c

@@ -0,0 +1,25 @@
+/*
+ * Copyright 2014 Linaro Ltd.
+ * Copyright (C) 2014 ZTE Corporation.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+
+#include <linux/of_address.h>
+#include <linux/of_platform.h>
+
+static const char *zx296702_dt_compat[] __initconst = {
+	"zte,zx296702",
+	NULL,
+};
+
+DT_MACHINE_START(ZX, "ZTE ZX296702 (Device Tree)")
+	.dt_compat	= zx296702_dt_compat,
+	.l2c_aux_val    = 0,
+	.l2c_aux_mask   = ~0,
+MACHINE_END