diff options
| author | Greg Ungerer | 2011-11-15 15:26:28 +1000 |
|---|---|---|
| committer | Greg Ungerer | 2011-12-24 21:47:58 +1000 |
| commit | ec84118795fa687192de04e0dcb63178e4bf63e5 (patch) | |
| tree | 05be7b9c7ed8a6a9ea01afdb8cb7fd3aec9f02b7 | |
| parent | 84f3fb7a2aadeda3c0a34e61591a8eccf5e367b4 (diff) | |
m68knommu: disable cache early in startup for ColdFire
Disbale the CPU cache really early in the ColdFire startup code. We set
up some variables for RAM sizing and we want to make they stick in RAM.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
| -rw-r--r-- | arch/m68k/platform/coldfire/head.S | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/m68k/platform/coldfire/head.S b/arch/m68k/platform/coldfire/head.S index c33483824a2e..49666b4dd091 100644 --- a/arch/m68k/platform/coldfire/head.S +++ b/arch/m68k/platform/coldfire/head.S @@ -143,6 +143,9 @@ __HEAD _start: nop /* filler */ movew #0x2700, %sr /* no interrupts */ + movel #CACHE_INIT,%d0 /* disable cache */ + movec %d0,%CACR + nop #if defined(CONFIG_UBOOT) movel %sp,_init_sp /* save initial stack pointer */ #endif @@ -176,9 +179,6 @@ _start: * it is very similar. Define the exact settings in the headers * then the code here is the same for all. */ - movel #CACHE_INIT,%d0 /* invalidate whole cache */ - movec %d0,%CACR - nop movel #ACR0_MODE,%d0 /* set RAM region for caching */ movec %d0,%ACR0 movel #ACR1_MODE,%d0 /* anything else to cache? */ |