1.\" Copyright (c) 2003 Matthew N. Dodd <winter@jurai.net> 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.\" Note: The date here should be updated whenever a non-trivial 28.\" change is made to the manual page. 29.Dd April 4, 2003 30.Dt VPD 4 i386 31.Os 32.Sh NAME 33.Nm vpd 34.Nd "Vital Product Data kernel interface" 35.Sh SYNOPSIS 36.Cd "device vpd" 37.Sh DESCRIPTION 38IBM ThinkPad notebooks (and most IBM desktop PCs) have a 48-byte 39Vital Product Data (VPD) structure located in the BIOS Shadow RAM. 40.Pp 41The VPD provides machine type and model information, the build ID 42(this is roughly the BIOS version) and serial number information. 43.Pp 44The 45.Nm vpd 46driver scans the BIOS area and claims the memory used by the VPD 47structure. It provides the 48.Xr sysctl 3 49branch hw.vpd to allow this information 50to be accessed by the userland. 51The following variables are provided, one per VPD attachment (there should 52only be one): 53.Bl -tag -width -indent 54.It Dv MACHINE_TYPE 55.Pq machine.type 56Machine type. 57.It Dv MACHINE_MODEL 58.Pq machine.model 59Machine model. 60.It Dv BUILD_ID 61.Pq build.id 62BIOS Build ID. 63.It Dv SERIAL_BOX 64.Pq serial.box 65Box Serial Number. 66.It Dv SERIAL_PLANAR 67.Pq serial.planar 68Motherboard Serial Number. 69.El 70.Sh SEE ALSO 71.Rs 72.%T "TP General - Using the BIOS Build ID to identify IBM ThinkPad systems" 73.%N "Reference #: MIGR-45120" 74.%D "November 22, 2002" 75.%O "http://www.ibm.com/support/docview.wss?uid=psg1MIGR-45120" 76.Re 77.Sh HISTORY 78The 79.Nm 80driver and manual page example first appeared in 81.Fx 5.1 . 82.Pp 83.Sh AUTHORS 84This 85manual page was written by 86.An Matthew N. Dodd Aq mdodd@FreeBSD.org . 87.Sh BUGS 88The checksum code isn't quite correct so we're not able to detect 89a corrupt VPD structure. 90