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Re: I have question related for caches in R3000.

To: Shinkyu Kang <cosmos@astonlinux.com>
Subject: Re: I have question related for caches in R3000.
From: Ralf Baechle <ralf@uni-koblenz.de>
Date: Tue, 12 Jun 2001 14:05:51 +0200
Cc: linux-mips@fnet.fr
In-reply-to: <001201c0f08f$249b21f0$ad02a8c0@cosmos>; from cosmos@astonlinux.com on Sat, Jun 09, 2001 at 11:51:54AM +0900
References: <001201c0f08f$249b21f0$ad02a8c0@cosmos>
User-agent: Mutt/1.2.5i
On Sat, Jun 09, 2001 at 11:51:54AM +0900, Shinkyu Kang wrote:

> This system supports full mmu unit.
> 
> This system have also two-way set associative or direct-mapped instruction 
> cache(16k)
> and direct-mapped data cache (8k).
> 
> When I-cache and D-cache are off, the kernel is up, 
> but cashes are on, the kernel is down.
> 
> what can I do? 
> what is modified in kernel?

Our code assumes real R3000s which means physically indexed write-through
direct mapped caches that are accessible through a particular interface.
Your CPU is not one of those and therefore you'll have to make a few
changes to arch/mips/mm/r2300.c.

  Ralf

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