1 files changed, 27 insertions, 0 deletions

diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 38a44f9b9da2..41978ee4f9d0 100644
--- a/arch/arm/mach-footbridge/common.c
+++ b/arch/arm/mach-footbridge/common.c
@@ -199,6 +199,33 @@ void __init footbridge_map_io(void)
                 iotable_init(ebsa285_host_io_desc, ARRAY_SIZE(ebsa285_host_io_desc));
 }
 
+void footbridge_restart(char mode, const char *cmd)
+{
+        if (mode == 's') {
+                /* Jump into the ROM */
+                soft_restart(0x41000000);
+        } else {
+                /*
+                 * Force the watchdog to do a CPU reset.
+                 *
+                 * After making sure that the watchdog is disabled
+                 * (so we can change the timer registers) we first
+                 * enable the timer to autoreload itself.  Next, the
+                 * timer interval is set really short and any
+                 * current interrupt request is cleared (so we can
+                 * see an edge transition).  Finally, TIMER4 is
+                 * enabled as the watchdog.
+                 */
+                *CSR_SA110_CNTL &= ~(1 << 13);
+                *CSR_TIMER4_CNTL = TIMER_CNTL_ENABLE |
+                                   TIMER_CNTL_AUTORELOAD |
+                                   TIMER_CNTL_DIV16;
+                *CSR_TIMER4_LOAD = 0x2;
+                *CSR_TIMER4_CLR  = 0;
+                *CSR_SA110_CNTL |= (1 << 13);
+        }
+}
+
 #ifdef CONFIG_FOOTBRIDGE_ADDIN
 
 static inline unsigned long fb_bus_sdram_offset(void)