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-rw-r--r--arch/arm/mach-footbridge/common.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/arm/mach-footbridge/common.c b/arch/arm/mach-footbridge/common.c
index 38a44f9b9da..41978ee4f9d 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)