From ec84118795fa687192de04e0dcb63178e4bf63e5 Mon Sep 17 00:00:00 2001 From: Greg Ungerer Date: Tue, 15 Nov 2011 15:26:28 +1000 Subject: [PATCH] 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 Signed-off-by: Greg Ungerer --- arch/m68k/platform/coldfire/head.S | 6 +++--- 1 file 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? */ -- 2.34.1