[PATCH] m68knommu: fix ColdFire startup code to properly handle non 0 based ram

Correctly determine the end of ram for ram setups that do not
start at base address of 0. Add support for the MOD5272 board,
which doesn not have a ram base of 0.

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

diff --git a/arch/m68knommu/platform/5307/head.S b/arch/m68knommu/platform/5307/head.S
index c7d7a39..7f4ba83 100644 (file)
--- a/arch/m68knommu/platform/5307/head.S
+++ b/arch/m68knommu/platform/5307/head.S
@@ -39,14 +39,18 @@
  *     Memory size exceptions for special cases. Some boards may be set
  *     for auto memory sizing, but we can't do it that way for some reason.
  *     For example the 5206eLITE board has static RAM, and auto-detecting
- *     the SDRAM will do you no good at all.
+ *     the SDRAM will do you no good at all. Same goes for the MOD5272.
  */
 #ifdef CONFIG_RAMAUTO
 #if defined(CONFIG_M5206eLITE)
-#define        MEM_SIZE        0x00100000              /* 1MiB default memory */
+#define        MEM_SIZE        0x00100000      /* 1MiB default memory */
+#endif
+#if defined(CONFIG_MOD5272)
+#define MEM_SIZE       0x00800000      /* 8MiB default memory */
 #endif
 #endif /* CONFIG_RAMAUTO */
 
+
 /*
  *     If we don't have a fixed memory size now, then lets build in code
  *     to auto detect the DRAM size. Obviously this is the prefered
@@ -100,11 +104,15 @@
 
 /*
  *     Most ColdFire boards have their DRAM starting at address 0.
- *     Notable exception is the 5206eLITE board.
+ *     Notable exception is the 5206eLITE board, another is the MOD5272.
  */
 #if defined(CONFIG_M5206eLITE)
 #define        MEM_BASE        0x30000000
 #endif
+#if defined(CONFIG_MOD5272)
+#define MEM_BASE       0x02000000
+#define VBR_BASE       0x20000000      /* vectors in SRAM */
+#endif
 
 #ifndef MEM_BASE
 #define        MEM_BASE        0x00000000      /* memory base at address 0 */
@@ -188,6 +196,7 @@ _start:
        movel   %a7,_rambase
 
        GET_MEM_SIZE                            /* macro code determines size */
+       addl    %a7,%d0
        movel   %d0,_ramend                     /* set end ram addr */
 
        /*