[U-Boot-Users] Bug in AT91RM9200: icache not enabled!

Steven Scholz steven.scholz at imc-berlin.de
Mon Mar 14 09:23:45 CET 2005


>>* Patch by Steven Scholz, 13 March 2005:
>>   fix cache enabling for AT91RM9200
> Seems to work fine for me.


>>Please remove the line
>>	orr     r0, r0, #0x00000004     @ set bit 3 (C) D-Cache
>>if we don't need the data cache for the AT91RM9200. I am not sure if they will 
>>help for CRCs or unzipping...
> I don't see any obvious effect with or without  this  line  regarding
> time needed for CRC or unzip. Why should we remove it?

Cause this bit is not set by arm920t/start.S either. Maybe for some reason?

Anyway, why has DCACHE no effect on CRC? It should though.


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