94 lines
2.9 KiB
Groff
94 lines
2.9 KiB
Groff
.\" Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net>
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $FreeBSD$
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.\"
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.Dd April 4, 2003
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.Dt VPD 4 i386
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.Os
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.Sh NAME
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.Nm vpd
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.Nd "Vital Product Data kernel interface"
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.Sh SYNOPSIS
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.Cd "device vpd"
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.Sh DESCRIPTION
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.Tn IBM ThinkPad
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notebooks (and most
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.Tn IBM
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desktop PCs) have a 48-byte
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Vital Product Data (VPD) structure located in the BIOS Shadow RAM.
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.Pp
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The VPD provides machine type and model information, the build ID
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(this is roughly the BIOS version) and serial number information.
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.Pp
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The
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.Nm
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driver scans the BIOS area and claims the memory used by the VPD
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structure.
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It provides the
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.Xr sysctl 3
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branch
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.Va hw.vpd
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to allow this information to be accessed by the userland.
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The following variables are provided, one per VPD attachment (there should
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only be one):
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.Pp
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.Bl -tag -width ".Dv MACHINE_MODEL" -compact
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.It Dv MACHINE_TYPE
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.Pq Va machine.type
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Machine type.
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.It Dv MACHINE_MODEL
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.Pq Va machine.model
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Machine model.
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.It Dv BUILD_ID
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.Pq Va build.id
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BIOS Build ID.
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.It Dv SERIAL_BOX
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.Pq Va serial.box
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Box Serial Number.
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.It Dv SERIAL_PLANAR
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.Pq Va serial.planar
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Motherboard Serial Number.
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.El
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.Sh SEE ALSO
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.Rs
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.%T "TP General - Using the BIOS Build ID to identify IBM ThinkPad systems"
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.%N "Reference #: MIGR-45120"
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.%D "November 22, 2002"
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.%O "http://www.ibm.com/support/docview.wss?uid=psg1MIGR-45120"
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.Re
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.Sh HISTORY
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The
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.Nm
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driver first appeared in
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.Fx 5.1 .
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.Sh AUTHORS
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The
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.Nm
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driver and this manual page were written by
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.An Matthew N. Dodd Aq mdodd@FreeBSD.org .
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.Sh BUGS
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The checksum code is not quite correct so we are not able to detect
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a corrupt VPD structure.
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