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From: "Jeremy Jackson" <jerj@coplanar.net>
To: "Suparna Bhattacharya" <suparna@in.ibm.com>
Cc: "Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
        <linux-kernel@vger.kernel.org>, <lkcd-devel@lists.sourceforge.net>
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Subject: Re: Faster reboots (and a better way of taking crashdumps?)
Date: Wed, 10 Apr 2002 20:47:17 -0700
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Should this go off lkml?

----- Original Message ----- 
From: "Suparna Bhattacharya" <suparna@in.ibm.com>
Sent: Monday, April 08, 2002 12:20 AM
 
> > I'm currently researching combining the two, to create a LinuxBIOS
> > firmware debug console, which will allow complete crash dump to
> > be taken after a hardware reset, with the smallest possible Heisenburg
> > effect, aside from a hardware debugger.
> 
> So how is the actual writeout accomplished ?(via LinuxBIOS ?)

well it's just an idea just now. In order to do this from code in rom,
I immagine it would just dump physical memory to a raw partition,
using polling ide drivers in LinuxBIOS.  This is probably a step
backwards, compared to modern crash dumps, but it would
allow zero alteration of memory.

It may be possible to do with a standard flash size of 128KiB,
though, which would allow virtually all motherboards to support it.

Jeremy
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