[PATCH] m68knommu: add 5208 ColdFire reset/reboot support

Add reset/reboot code to support the ColdFire 5208 family.
Patch originally from Matt Wadell (from code originally written by
Mike Lavender).

Signed-off-by: Greg Ungerer <gerg@uclinux.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/asm-m68knommu/system.h b/include/asm-m68knommu/system.h
index 53cbbad0f130..6338afc850ba 100644
--- a/include/asm-m68knommu/system.h
+++ b/include/asm-m68knommu/system.h
@@ -312,6 +312,19 @@ cmpxchg(volatile int *p, int old, int new)
         moveb #0x80, (%a0);             \
         ");                             \
 })
+#elif defined(CONFIG_M520x)
+        /*
+         * The MCF5208 has a bit (SOFTRST) in memory (Reset Control Register 
+         * RCR), that when set, resets the MCF5208.
+         */
+#define HARD_RESET_NOW()                \
+({                                      \
+        unsigned char volatile *reset;  \
+        asm("move.w     #0x2700, %sr"); \
+        reset = ((volatile unsigned short *)(MCF_IPSBAR + 0xA0000));    \
+        while(1)                        \
+                *reset |= 0x80;         \
+})
 #else
 #define HARD_RESET_NOW() ({             \
         asm("                           \