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authorGreg Ungerer <gerg@snapgear.com>2005-09-02 04:42:52 +0400
committerLinus Torvalds <torvalds@evo.osdl.org>2005-09-02 11:57:29 +0400
commit029fc1375fcf687a83faf7521358a9f5c589da13 (patch)
tree2dd027f39fbbc4359c5f26233219faed1e8e62ac /arch/m68knommu
parente6070a1712e69779f322239056fb5f1e1db802ce (diff)
downloadlinux-029fc1375fcf687a83faf7521358a9f5c589da13.tar.xz
[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>
Diffstat (limited to 'arch/m68knommu')
-rw-r--r--arch/m68knommu/platform/5307/head.S15
1 files changed, 12 insertions, 3 deletions
diff --git a/arch/m68knommu/platform/5307/head.S b/arch/m68knommu/platform/5307/head.S
index c7d7a395c4cc..7f4ba837901f 100644
--- 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 */
/*