[ECOS] sdram scrubbing and MMU enabling.

[Mynampati, Venkata S.]

> >>>>> Mynampati, Venkata S writes:
> 
> > Hi 
> > in hal_platform_setup.h ( iq80310/include), i noticed that we are
> > enabling MMU and then scrubbing sdram starting from 
> RAM_BASE i.e A0000000.
> > Now, my doubt is:
> > since we have mapped the first 4K of RAM to flash,
> > 	[ mmu_table_rambase:
> > 	        // Map 4k page at 0xa0000000 virt --> 
> 0x00000000 physical
> > 	        //   Read-Write, cacheable, non-bufferable ]
> > does that mean writing a 0x00 to a0000000 is same as 
> writing to flash?
> > Am i missing something here?
> 
> No, its a problem. It came up this week on the ARM linux 
> kernel mailing list.
> I'm working on a fix.
> 
> --Mark
>   
what i am doing is scrubbing and then enabling mmu.

venkat