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From: Dave Peterson <dsp@llnl.gov>
To: ebiederman@lnxi.com (Eric W. Biederman)
Date: Wed, 21 Dec 2005 18:12:10 -0800
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Subject: Re: ichxrom driver question
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On Wednesday 21 December 2005 11:05, Eric W. Biederman wrote:
> > What does "cached flash chip" mean?  I have very little familiarity
> > with how these flash chips operate.
>
> The flash chips contents being cached in the cpus cache.
> cat /proc/mtrr and see if covers the 0xfff80000 - 0xffffffff
> range where your flash chip lives.

The MTRR setup looks ok:

    # cat /proc/mtrr
    reg00: base=0x00000000 (   0MB), size=2048MB: write-back, count=1
    #

> > How do I determine whether there is motherboard-specific magic?
>
> Usually I see if I can read out the id on the flash chip.  That
> tests to see if writes make it to the device because you have
> to write a command.

How do I do this?

> > The flash image I tried to install was an exact duplicate of the
> > currently installed flash image, obtained as follows:
> >
> >     # dd if=/dev/mtd0 of=bios_image
> >
> > I was just testing the BIOS flashing mechanism to see if it worked.
>
> Ok.  That sounds sane.  Are you running linuxbios right now or something
> else?

Yes, I'm using linuxbios.