ARM: tegra: Allow overriding arch_reset

Signed-off-by: Colin Cross <ccross@android.com>

arch/arm/mach-tegra/board.h

@@ -23,6 +23,8 @@
 
 #include <linux/types.h>
 
+void tegra_assert_system_reset(char mode, const char *cmd);
+
 void __init tegra_common_init(void);
 void __init tegra_map_common_io(void);
 void __init tegra_init_irq(void);

arch/arm/mach-tegra/common.c

@@ -26,11 +26,24 @@
 
 #include <mach/iomap.h>
 #include <mach/dma.h>
+#include <mach/system.h>
 
 #include "board.h"
 #include "clock.h"
 #include "fuse.h"
 
+void (*arch_reset)(char mode, const char *cmd) = tegra_assert_system_reset;
+
+void tegra_assert_system_reset(char mode, const char *cmd)
+{
+	void __iomem *reset = IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x04);
+	u32 reg;
+
+	reg = readl(reset);
+	reg |= 0x04;
+	writel(reg, reset);
+}
+
 static __initdata struct tegra_clk_init_table common_clk_init_table[] = {
 	/* name		parent		rate		enabled */
 	{ "clk_m",	NULL,		0,		true },

arch/arm/mach-tegra/include/mach/system.h

@@ -24,16 +24,10 @@
 #include <mach/hardware.h>
 #include <mach/iomap.h>
 
-static inline void arch_idle(void)
-{
-}
+extern void (*arch_reset)(char mode, const char *cmd);
 
-static inline void arch_reset(char mode, const char *cmd)
+static inline void arch_idle(void)
 {
-	void __iomem *reset = IO_ADDRESS(TEGRA_CLK_RESET_BASE + 0x04);
-	u32 reg = readl(reset);
-	reg |= 0x04;
-	writel(reg, reset);
 }
 
 #endif