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>
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84f3fb7a2a
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ec84118795
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@ -143,6 +143,9 @@ __HEAD
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_start:
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nop /* filler */
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movew #0x2700, %sr /* no interrupts */
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movel #CACHE_INIT,%d0 /* disable cache */
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movec %d0,%CACR
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nop
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#if defined(CONFIG_UBOOT)
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movel %sp,_init_sp /* save initial stack pointer */
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#endif
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@ -176,9 +179,6 @@ _start:
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* it is very similar. Define the exact settings in the headers
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* then the code here is the same for all.
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*/
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movel #CACHE_INIT,%d0 /* invalidate whole cache */
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movec %d0,%CACR
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nop
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movel #ACR0_MODE,%d0 /* set RAM region for caching */
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movec %d0,%ACR0
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movel #ACR1_MODE,%d0 /* anything else to cache? */
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