Here's a response to a plea for help on the linux-thinkpad list:
----- Forwarded message from Rob Mayoff <mayoff at dqd.com> -----
Delivered-To: linux-thinkpad-outgoing at www.bm-soft.com
Delivered-To: linux-thinkpad at www.bm-soft.com
Date: 20 Jul 2002 20:17:26 -0500
From: "Rob Mayoff" <mayoff at dqd.com>
To: linux-thinkpad at www.bm-soft.com
Cc: phil at netroedge.com
Subject: Re: [ltp] Incorporating Thinkpad Detection into Lm_sensors
In-Reply-To: <20020720160329.K1076 at Stimpy.netroedge.com>
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+---------- On Jul 20, phil at netroedge.com said:
> So, I need your help! How can we detect a Thinkpad? Does the PCI bus
> (lspci) give some obvious determination? Or, is there some other
> means of detection we could use? If we could detect for a Thinkpad,
> we could safely disable choice drivers to prevent any chance of Flash
> ROM corruption on those Thinkpads which are vulnerable.
Perhaps you could detect the "SMAPI BIOS", which many (possibly all)
Thinkpads appear to use. See Appendix B of the Technical Reference
Manual for the Thinkpad 600 or Thinkpad 770. If you search for "thinkpad
technical reference" on Google, those documents will be the top two
links.
Here's a quote:
Systems that support SMAPI BIOS must provide the following header
image in the F000 segment system ROM area at the 16-byte boundary.
The client needs to search and find this SMAPI BIOS header image to
get the entry point for the service.
Field Offset (in Hex) Length Value
Signature 00 4 bytes '$SMB' (ASCII)
[etc...]
You might find the loadable modules in the tpctl package useful; they
use SMAPI. See <http://tpctl.sourceforge.net/tpctlhome.htm>.
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--
Philip Edelbrock -- IS Manager -- Edge Design, Corvallis, OR
phil at netroedge.com -- http://www.netroedge.com/~phil
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