On Fri, 2001-09-14 at 20:22, John Dorsey wrote:
>
> On Friday, September 14, 2001, at 06:00 PM, Erik Mouw wrote:
>
> > On Fri, Sep 14, 2001 at 04:18:31PM -0500, David Anders wrote:
> >> i hate to be a pest, but i had one more question. if i have some
> >> assembly code to turn the mmu off (my bootloader turns it on),
> >
> > What's the point of turning on the MMU in the bootloader? There is
> > really no need to do that, it makes the bootloader unnecessary
> > complicated.
>
> Maybe this isn't relevant for most loaders, but JFFS replay performance
> was pretty horrible on bootldr without the MMU/caches.
>
Actually, the main factors are the instruction cache, and the flash/ram
timings. The D-cache (which requires the MMU) doesn't make a significant
increase in speed.
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