ARM: 5864/1: Implement arch_reset() in NUC900
Implement arch_reset(), reboot from shell become possible.
Signed-off-by: lijie <eltshanli@gmail.com>
Acked-by: Wan ZongShun <mcuos.com@gmail.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-w90x900/include/mach/system.h b/arch/arm/mach-w90x900/include/mach/system.h
index 9406400..ce228bd 100644
--- a/arch/arm/mach-w90x900/include/mach/system.h
+++ b/arch/arm/mach-w90x900/include/mach/system.h
@@ -15,7 +15,15 @@
*
*/
+#include <linux/io.h>
#include <asm/proc-fns.h>
+#include <mach/map.h>
+#include <mach/regs-timer.h>
+
+#define WTCR (TMR_BA + 0x1C)
+#define WTCLK (1 << 10)
+#define WTE (1 << 7)
+#define WTRE (1 << 1)
static void arch_idle(void)
{
@@ -23,6 +31,11 @@
static void arch_reset(char mode, const char *cmd)
{
- cpu_reset(0);
+ if (mode == 's') {
+ /* Jump into ROM at address 0 */
+ cpu_reset(0);
+ } else {
+ __raw_writel(WTE | WTRE | WTCLK, WTCR);
+ }
}