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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
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+<table class="head">
+ <tr>
+ <td class="head-ltitle">TPM(4)</td>
+ <td class="head-vol">Device Drivers Manual</td>
+ <td class="head-rtitle">TPM(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">tpm</code> &#x2014; <span class="Nd">Trusted
+ Platform Module</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">tpm* at isa? iomem 0xfed40000</code>
+ <br/>
+ <code class="Cd">tpm* at acpi?</code></p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="DESCRIPTION"><a class="permalink" href="#DESCRIPTION">DESCRIPTION</a></h1>
+<p class="Pp">The <code class="Nm">tpm</code> driver provides support for
+ various Trusted Platform Module (TPM) chips.</p>
+<p class="Pp">Supported modules:</p>
+<p class="Pp"></p>
+<ul class="Bl-bullet Bd-indent Bl-compact">
+ <li>TPM 2.0 chips over ACPI</li>
+ <li>TPM 1.2 chips over ACPI and ISA</li>
+</ul>
+<p class="Pp">Note that the supported interface version is TIS1.2 in each
+ case.</p>
+<p class="Pp">The TPM may need to be enabled in the system's firmware or BIOS,
+ which requires a reboot to take effect. This is generally beyond the control
+ of <span class="Ux">NetBSD</span>. Enabling a TPM does not require using
+ trusted boot &#x2014; it can be enabled, for example, only for the
+ <a class="Xr">rnd(4)</a> entropy source.</p>
+</section>
+<section class="Sh">
+<h1 class="Sh" id="SEE_ALSO"><a class="permalink" href="#SEE_ALSO">SEE
+ ALSO</a></h1>
+<p class="Pp"><a class="Xr">config(1)</a>, <a class="Xr">intro(4)</a>,
+ <a class="Xr">rnd(4)</a></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">tpm</code> driver was written by
+ <span class="An">Maxime Villard</span>, <span class="An">Michael
+ Shalayeff</span> and <span class="An">Hans-Joerg Hoexer</span>.</p>
+</section>
+</div>
+<table class="foot">
+ <tr>
+ <td class="foot-date">January 15, 2021</td>
+ <td class="foot-os">NetBSD 10.1</td>
+ </tr>
+</table>