ARM: uniphier: support system reset functionality for PSCI

This supports the system reset via PSCI for ARMv7 SoCs.

Because the system reset is not supported on PSCI 0.1, let's define
CONFIG_ARMV7_PSCI_1_0. (it is supported since PSCI 0.2, but there
is no CONFIG to enable it in U-Boot for now.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
diff --git a/arch/arm/mach-uniphier/reset.c b/arch/arm/mach-uniphier/reset.c
index b5825bc..43e27d1 100644
--- a/arch/arm/mach-uniphier/reset.c
+++ b/arch/arm/mach-uniphier/reset.c
@@ -1,15 +1,25 @@
 /*
- * Copyright (C) 2012-2015 Masahiro Yamada <yamada.masahiro@socionext.com>
+ * Copyright (C) 2012-2014 Panasonic Corporation
+ * Copyright (C) 2015-2016 Socionext Inc.
+ *   Author: Masahiro Yamada <yamada.masahiro@socionext.com>
  *
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
 #include <common.h>
 #include <linux/io.h>
+#include <asm/secure.h>
 
 #include "sc-regs.h"
 
-void reset_cpu(unsigned long ignored)
+/* If PSCI is enabled, this is used for SYSTEM_RESET function */
+#ifdef CONFIG_ARMV7_PSCI
+#define __SECURE	__secure
+#else
+#define __SECURE
+#endif
+
+void __SECURE reset_cpu(unsigned long ignored)
 {
 	u32 tmp;