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Re: File corruption

To: Andrew Linfoot <andy@derfel99.freeserve.co.uk>
Subject: Re: File corruption
From: Ralf Baechle <ralf@uni-koblenz.de>
Date: Mon, 28 Jun 1999 12:39:50 +0200
Cc: Ulf Carlsson <ulfc@thepuffingroup.com>, linux@cthulhu.engr.sgi.com, linux-mips@fnet.fr, linux-mips@vger.rutgers.edu
In-reply-to: <001901bebf2d$e1951530$0a02030a@snafu>; from Andrew Linfoot on Fri, Jun 25, 1999 at 06:11:52PM +0100
References: <19990622032859.B6955@thepuffingroup.com> <19990622152145.A1059@uni-koblenz.de> <19990623014923.A8953@thepuffingroup.com> <19990625002853.D17220@uni-koblenz.de> <002701bebf17$cd9e4fd0$0a02030a@snafu> <19990625185906.A9050@thepuffingroup.com> <001901bebf2d$e1951530$0a02030a@snafu>
Sender: owner-linux@cthulhu.engr.sgi.com
On Fri, Jun 25, 1999 at 06:11:52PM +0100, Andrew Linfoot wrote:

> CPU: MIPS-R4400 FPU<MIPS-R4400FPC> ICACHE DCACHE SCACHE

This is what the firmware detected.

> Loading R4000 MMU routines.

This will always say R4000 if it's a R4000 class CPU.

> CPU revision is: 00000450
> Primary instruction cache 16kb, linesize 16 bytes)
> Primary data cache 16kb, linesize 16 bytes)
> Secondary cache sized at 1024K linesize 128

Which says that you have an R4400SC V5.0.

> an interesting point here is that /proc/cpuinfo tells me i only have an
> r4000!

Good spotting, the CPU detection code has a bug causes only V4 CPUs to be
detected as R4400.  The difference is just cosmetics; R4000 and R4400 are
almost the same.  Especially it's unrelated to the file corruption problem.

  Ralf

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