Subject: Re: Acorn32 start.S
To: Richard Earnshaw <>
From: David Laight <>
List: port-arm
Date: 07/03/2007 18:13:06
On Tue, Jul 03, 2007 at 06:00:53PM +0200, Reinoud Zandijk wrote:
> Dear Richard, dear folks,
> i'm confused about the correct procedure concerning MMU disabling on ARMv3 
> and ARMv4. The data sheets i have for ARM610/ARM710 and SA don't mention 
> what effect it will have on the instruction fetching. AFAIK its two 
> instructions that are in the pipeline before the translation becomes 
> effective.

IIRC the recommendation for the SA1100 was not to disable the mmu/cache
unless the code was being executed from a locaton that was mapped
physical == logical.


David Laight: