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Date: Thu, 3 Apr 2003 16:11:02 +0200 (MET DST)
From: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
To: ralf@linux-mips.org
cc: linux-mips@linux-mips.org
Subject: Re: CVS Update@-mips.org: linux 
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On Thu, 3 Apr 2003 ralf@linux-mips.org wrote:

> Modified files:
> 	arch/mips/mm   : Tag: linux_2_4 c-r4k.c 
> 	arch/mips64/mm : Tag: linux_2_4 c-r4k.c 
> 
> Log message:
> 	Add check for R4000 V2.2 errata #2.

 Hmm, erratum #2 is about status output pins.  I suppose you mean erratum
#5.  But then it applies to V3.0, too.

 Then the bit is r/w, so how about toggling it instead of panicking? 
With an informational message like:

printk(KERN_ERR "Firmware bug: 32-byte I-cache line size unsupported for
the R4000...\n");
printk(KERN_ERR "... fixing up to 16-byte size.\n");

Of course that probably requires a temporary cache inhibition and
invalidation.

 Would you care to code that or should I look into it?

  Maciej

-- 
+  Maciej W. Rozycki, Technical University of Gdansk, Poland   +
+--------------------------------------------------------------+
+        e-mail: macro@ds2.pg.gda.pl, PGP key available        +