You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
2.0 KiB
Diff
62 lines
2.0 KiB
Diff
From ed9d4b88136173a4e17701d9c1162ddfecf902e4 Mon Sep 17 00:00:00 2001
|
|
From: Kurt Mahan <kmahan@freescale.com>
|
|
Date: Mon, 19 Nov 2007 15:24:30 -0700
|
|
Subject: [PATCH] Short circuit IOREMAP calls in the 0xF0000000 range.
|
|
|
|
LTIBName: m5445x-ioremap-xf0000000
|
|
Signed-off-by: Kurt Mahan <kmahan@freescale.com>
|
|
---
|
|
arch/m68k/coldfire/head.S | 4 ++--
|
|
arch/m68k/mm/kmap.c | 14 ++++++++++++--
|
|
2 files changed, 14 insertions(+), 4 deletions(-)
|
|
|
|
--- a/arch/m68k/coldfire/head.S
|
|
+++ b/arch/m68k/coldfire/head.S
|
|
@@ -56,13 +56,13 @@
|
|
* Setup ACR mappings to provide the following memory map:
|
|
* Data
|
|
* 0xA0000000 -> 0xAFFFFFFF [0] NO CACHE / PRECISE / SUPER ONLY
|
|
- * 0xFC000000 -> 0xFCFFFFFF [1] NO CACHE / PRECISE / SUPER ONLY
|
|
+ * 0xF0000000 -> 0xFFFFFFFF [1] NO CACHE / PRECISE / SUPER ONLY
|
|
* Code
|
|
* None currently (mapped via TLBs)
|
|
*/
|
|
|
|
#define ACR0_DEFAULT #0xA00FA048 /* ACR0 default value */
|
|
-#define ACR1_DEFAULT #0xFC00A040 /* ACR1 default value */
|
|
+#define ACR1_DEFAULT #0xF00FA040 /* ACR1 default value */
|
|
#define ACR2_DEFAULT #0x00000000 /* ACR2 default value */
|
|
#define ACR3_DEFAULT #0x00000000 /* ACR3 default value */
|
|
|
|
--- a/arch/m68k/mm/kmap.c
|
|
+++ b/arch/m68k/mm/kmap.c
|
|
@@ -133,8 +133,18 @@ void __iomem *__ioremap(unsigned long ph
|
|
}
|
|
#endif
|
|
|
|
+#ifdef CONFIG_M54455
|
|
+ if (physaddr >= 0xf0000000) {
|
|
+ /* short circuit mappings for xf0000000 */
|
|
#ifdef DEBUG
|
|
- printk("ioremap: 0x%lx,0x%lx(%d) - ", physaddr, size, cacheflag);
|
|
+ printk(KERN_INFO "ioremap: short circuiting 0x%lx mapping\n", physaddr);
|
|
+#endif
|
|
+ return (void __iomem *)physaddr;
|
|
+ }
|
|
+#endif
|
|
+
|
|
+#ifdef DEBUG
|
|
+ printk("ioremap: paddr=0x%lx,size=0x%lx(%d) - ", physaddr, size, cacheflag);
|
|
#endif
|
|
/*
|
|
* Mappings have to be aligned
|
|
@@ -153,7 +163,7 @@ void __iomem *__ioremap(unsigned long ph
|
|
virtaddr = (unsigned long)area->addr;
|
|
retaddr = virtaddr + offset;
|
|
#ifdef DEBUG
|
|
- printk("0x%lx,0x%lx,0x%lx", physaddr, virtaddr, retaddr);
|
|
+ printk(" paddr=0x%lx,vaddr=0x%lx,retaddr=0x%lx", physaddr, virtaddr, retaddr);
|
|
#endif
|
|
|
|
/*
|