static/freebsd/man4/man4.i386/vpd.4 3.html


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<table class="head">
  <tr>
    <td class="head-ltitle">VPD(4)</td>
    <td class="head-vol">Device Drivers Manual (i386)</td>
    <td class="head-rtitle">VPD(4)</td>
  </tr>
</table>
<div class="manual-text">
<section class="Sh">
<h1 class="Sh" id="NAME"><a class="permalink" href="#NAME">NAME</a></h1>
<p class="Pp"><code class="Nm">vpd</code> &#x2014; <span class="Nd">Vital
    Product Data kernel interface</span></p>
</section>
<section class="Sh">
<h1 class="Sh" id="SYNOPSIS"><a class="permalink" href="#SYNOPSIS">SYNOPSIS</a></h1>
<p class="Pp"><code class="Cd">device vpd</code></p>
</section>
<section class="Sh">
<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
<p class="Pp">IBM ThinkPad notebooks (and most IBM desktop PCs) have a 48-byte
    Vital Product Data (VPD) structure located in the BIOS Shadow RAM.</p>
<p class="Pp">The VPD provides machine type and model information, the build ID
    (this is roughly the BIOS version) and serial number information.</p>
<p class="Pp">The <code class="Nm">vpd</code> driver scans the BIOS area and
    claims the memory used by the VPD structure. It provides the
    <a class="Xr">sysctl(3)</a> branch <var class="Va">hw.vpd</var> to allow
    this information to be accessed by the userland. The following variables are
    provided, one per VPD attachment (there should only be one):</p>
<p class="Pp"></p>
<dl class="Bl-tag Bl-compact">
  <dt id="MACHINE_TYPE"><a class="permalink" href="#MACHINE_TYPE"><code class="Dv">MACHINE_TYPE</code></a></dt>
  <dd>(<var class="Va">machine.type</var>) Machine type.</dd>
  <dt id="MACHINE_MODEL"><a class="permalink" href="#MACHINE_MODEL"><code class="Dv">MACHINE_MODEL</code></a></dt>
  <dd>(<var class="Va">machine.model</var>) Machine model.</dd>
  <dt id="BUILD_ID"><a class="permalink" href="#BUILD_ID"><code class="Dv">BUILD_ID</code></a></dt>
  <dd>(<var class="Va">build.id</var>) BIOS Build ID.</dd>
  <dt id="SERIAL_BOX"><a class="permalink" href="#SERIAL_BOX"><code class="Dv">SERIAL_BOX</code></a></dt>
  <dd>(<var class="Va">serial.box</var>) Box Serial Number.</dd>
  <dt id="SERIAL_PLANAR"><a class="permalink" href="#SERIAL_PLANAR"><code class="Dv">SERIAL_PLANAR</code></a></dt>
  <dd>(<var class="Va">serial.planar</var>) Motherboard Serial Number.</dd>
</dl>
</section>
<section class="Sh">
<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
  ALSO</a></h1>
<p class="Pp"><cite class="Rs"><span class="RsT">TP General - Using the BIOS
    Build ID to identify IBM ThinkPad systems</span>,
    <span class="RsN">Reference #: MIGR-45120</span>,
    <a class="RsU" href="http://www.ibm.com/support/docview.wss?uid=psg1MIGR-45120">http://www.ibm.com/support/docview.wss?uid=psg1MIGR-45120</a>,
    <span class="RsD">November 22, 2002</span>.</cite></p>
</section>
<section class="Sh">
<h1 class="Sh" id="HISTORY"><a class="permalink" href="#HISTORY">HISTORY</a></h1>
<p class="Pp">The <code class="Nm">vpd</code> driver first appeared in
    <span class="Ux">FreeBSD 5.1</span>.</p>
</section>
<section class="Sh">
<h1 class="Sh" id="AUTHORS"><a class="permalink" href="#AUTHORS">AUTHORS</a></h1>
<p class="Pp">The <code class="Nm">vpd</code> driver and this manual page were
    written by <span class="An">Matthew N. Dodd</span>
    &lt;<a class="Mt" href="mailto:mdodd@FreeBSD.org">mdodd@FreeBSD.org</a>&gt;.</p>
</section>
</div>
<table class="foot">
  <tr>
    <td class="foot-date">August 31, 2004</td>
    <td class="foot-os">FreeBSD 15.0</td>
  </tr>
</table>