From: Greg Ungerer <gerg@snapgear.com>
Date: Wed, 2 Nov 2005 05:12:42 +0000 (+1000)
Subject: [PATCH] m68knommu: add 5208 ColdFire reset/reboot support
X-Git-Tag: v2.6.15-rc1~18^2~18
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01824853b1991b6ade506ee1b75f103a6eb8f558;p=linux-2.6

[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>
---

diff --git a/include/asm-m68knommu/system.h b/include/asm-m68knommu/system.h
index 53cbbad0f1..6338afc850 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("				\