Subject: Re: sun4m kernel on Microsparc-II (SS5)?
To: Jonathan Stone <jonathan@dsg.stanford.edu>
From: Neil J. McRae <neil@domino.org>
List: port-sparc
Date: 07/10/1996 09:36:53
On Tue, 9 Jul 1996 15:11:53 -0700 (PDT)
Jonathan Stone <jonathan@DSG.Stanford.EDU> wrote:
>
> >I believe uSPARC-2 support is now in the 1.2 release branch.
>
> That turns to not be completely the case. Partial MicroSPARC-II
> support, perhaps. However, sys/arch/sparc/sparc/pmap.c:pmap_enter4m()
> has the fragment
>
> /* Initialise pteproto with cache bit */
> pteproto = (pa & PMAP_NC) == 0 ? SRMMU_PG_C : 0;
>
> if (pa & PMAP_TYPE4M) { /* this page goes in an iospace */
> if (cpumod == SUN4M_MS)
> panic("pmap_enter4m: attempt to use 36-bit iospace on"
> " MicroSPARC");
> pteproto |= (pa & PMAP_TYPE4M) << PMAP_PTESHFT4M;
> }
>
> which is precisely the panic i encountered. That doesn't look
> like MicroSPARC support to me...
>
Hmm, thats strange as I know a couple of people running it on SS5's
Albeit with the cache disabled..
Neil.
--
Neil J. McRae. Alive and Kicking. Domino: In the glow of the night.
neil@DOMINO.ORG NetBSD/sparc: 100% SpF (Solaris protection Factor)
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