From 78e9bb837c258ac0ec7712b3d612cc2f407e731e Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 12 Jun 2024 05:50:42 +0200
Subject: Merging upstream version 256.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 man/systemd-tpm2-generator.xml | 60 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 man/systemd-tpm2-generator.xml

(limited to 'man/systemd-tpm2-generator.xml')

diff --git a/man/systemd-tpm2-generator.xml b/man/systemd-tpm2-generator.xml
new file mode 100644
index 0000000..51950ee
--- /dev/null
+++ b/man/systemd-tpm2-generator.xml
@@ -0,0 +1,60 @@
+<?xml version="1.0"?>
+<!--*-nxml-*-->
+<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.5//EN"
+  "http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd" [
+<!ENTITY % entities SYSTEM "custom-entities.ent" >
+%entities;
+]>
+<!-- SPDX-License-Identifier: LGPL-2.1-or-later -->
+<refentry id="systemd-tpm2-generator">
+
+  <refentryinfo>
+    <title>systemd-tpm2-generator</title>
+    <productname>systemd</productname>
+  </refentryinfo>
+
+  <refmeta>
+    <refentrytitle>systemd-tpm2-generator</refentrytitle>
+    <manvolnum>8</manvolnum>
+  </refmeta>
+
+  <refnamediv>
+    <refname>systemd-tpm2-generator</refname>
+    <refpurpose>Generator for inserting TPM2 synchronization point in the boot process</refpurpose>
+  </refnamediv>
+
+  <refsynopsisdiv>
+    <para><filename>/usr/lib/systemd/system-generators/systemd-tpm2-generator</filename></para>
+  </refsynopsisdiv>
+
+  <refsect1>
+    <title>Description</title>
+
+    <para><filename>systemd-tpm2-generator</filename> is a generator that adds a <varname>Wants=</varname>
+    dependency from <filename>sysinit.target</filename> to <filename>tpm2.target</filename> when it detects
+    that the firmware discovered a TPM2 device but the OS kernel so far did
+    not. <filename>tpm2.target</filename> is supposed to act as synchronization point for all services that
+    require TPM2 device access. See
+    <citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry> for
+    details.</para>
+
+    <para>The <option>systemd.tpm2_wait=</option> kernel command line option may be used to override
+    behaviour of the generator. It accepts a boolean value: if true then <filename>tpm2.target</filename>
+    will be added as synchronization point even if the firmware has not detected a TPM2 device. If false, the
+    target will not be inserted even if firmware reported a device but the OS kernel doesn't expose a device
+    for it yet. The latter might be useful in environments where a suitable TPM2 driver for the available
+    hardware is not available.</para>
+
+    <para><filename>systemd-tpm2-generator</filename> implements
+    <citerefentry><refentrytitle>systemd.generator</refentrytitle><manvolnum>7</manvolnum></citerefentry>.</para>
+  </refsect1>
+
+  <refsect1>
+    <title>See Also</title>
+    <para><simplelist type="inline">
+      <member><citerefentry><refentrytitle>systemd</refentrytitle><manvolnum>1</manvolnum></citerefentry></member>
+      <member><citerefentry><refentrytitle>systemd.special</refentrytitle><manvolnum>7</manvolnum></citerefentry></member>
+      <member><citerefentry><refentrytitle>kernel-command-line</refentrytitle><manvolnum>7</manvolnum></citerefentry></member>
+    </simplelist></para>
+  </refsect1>
+</refentry>
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