From: Dave Peterson <dsp@llnl.gov>
To: ebiederman@lnxi.com (Eric W. Biederman)
Cc: linux-mtd@lists.infradead.org
Subject: Re: ichxrom driver question
Date: Wed, 21 Dec 2005 18:12:10 -0800 [thread overview]
Message-ID: <200512211812.10597.dsp@llnl.gov> (raw)
In-Reply-To: <m38xueqnin.fsf@maxwell.lnxi.com>
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.
next prev parent reply other threads:[~2005-12-22 2:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-12-21 0:42 ichxrom driver question Dave Peterson
2005-12-21 1:40 ` Eric W. Biederman
2005-12-21 18:37 ` Dave Peterson
2005-12-21 19:05 ` Eric W. Biederman
2005-12-22 2:12 ` Dave Peterson [this message]
2005-12-23 8:26 ` Eric W. Biederman
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