From: David Woodhouse <dwmw2@infradead.org>
To: root@chaos.analogic.com
Cc: "Gregory (Grisha) Trubetskoy" <grisha@ispol.com>,
linux-kernel@vger.kernel.org
Subject: Re: reading/writing CMOS beyond 256 bytes?
Date: Mon, 09 Jul 2001 12:46:04 +0100 [thread overview]
Message-ID: <19706.994679164@redhat.com> (raw)
In-Reply-To: <Pine.LNX.3.95.1010706094624.519A-100000@chaos.analogic.com>
In-Reply-To: <Pine.LNX.3.95.1010706094624.519A-100000@chaos.analogic.com>
root@chaos.analogic.com said:
> Motherboard manufacturers who have rewritable BIOS chips now leave one
> page (typically 64k) for startup parameters. This is erased and
> written using the magic provided by the chip vendors.
You often have to do chipset-specific magic to enable the WE and Vpp lines
to BIOS flash chips. See drivers/mtd/maps/l440gx.c in my working tree for
an example.
Don't try this at home, kids. :)
--
dwmw2
next prev parent reply other threads:[~2001-07-09 11:49 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-07-06 12:38 reading/writing CMOS beyond 256 bytes? Gregory (Grisha) Trubetskoy
2001-07-06 12:47 ` Peter Svensson
2001-07-06 14:30 ` Richard B. Johnson
2001-07-09 11:46 ` David Woodhouse [this message]
2001-07-09 14:24 ` Christer Weinigel
2001-07-06 15:07 ` Alan Cox
2001-07-08 18:28 ` ESCD Support for 2.4.6-ac1/PNPBIOS (was: reading/writing CMOS beyond 256 bytes?) Gunther Mayer
2001-07-08 18:35 ` Jeff Garzik
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