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+  <div class="section" id="introduction-to-openpower-firmware">
+<h1>Introduction to OpenPOWER Firmware<a class="headerlink" href="#introduction-to-openpower-firmware" title="Permalink to this headline">¶</a></h1>
+<p>The <code class="docutils literal notranslate"><span class="pre">op-build</span></code> project constructs a host firmware image for OpenPOWER
+machines.</p>
+<div class="section" id="firmware-components">
+<h2>Firmware Components<a class="headerlink" href="#firmware-components" title="Permalink to this headline">¶</a></h2>
+<dl class="docutils">
+<dt><a class="reference external" href="https://github.com/open-power/buildroot">Buildroot</a></dt>
+<dd>We use <a class="reference external" href="http://buildroot.net/">http://buildroot.net/</a> as the build system for assembling a firmware
+image. <cite>op-build</cite> is a “Buildroot overlay”. We build a kernel and initramfs
+using buildroot to run the Petitboot boot loader in. We maintain a branch
+with a minimum number of patches on top of upstream buildroot.</dd>
+<dt><a class="reference external" href="https://github.com/open-power/op-build">op-build</a></dt>
+<dd>A buildroot overlay that assembles OpenPOWER Firmware images.</dd>
+<dt><a class="reference external" href="https://github.com/open-power/sbe">SBE</a></dt>
+<dd>the Self Boot Engine is the first unit inside the POWER processor to start
+executing. It’s job is to set up a core and load Hostboot.</dd>
+<dt><a class="reference external" href="https://github.com/open-power/hostboot">Hostboot</a></dt>
+<dd>Low level system boot firmware. It brings up CPU cores, the OCC, Memory
+and hands control over to OPAL (skiboot)</dd>
+<dt><a class="reference external" href="https://github.com/open-power/occ">OCC</a></dt>
+<dd>The On Chip Controller is responsible for thermal limits and frequency
+management.</dd>
+<dt>OPAL</dt>
+<dd>The OpenPOWER Abstraction Layer, provided by skiboot</dd>
+<dt><a class="reference external" href="https://open-power.github.io/skiboot/">skiboot</a></dt>
+<dd>skiboot implements OPAL (the OpenPOWER Abstraction Layer). Skiboot is
+boot and runtime firmware and is responsible for bringing up PCI and
+providing runtime abstractions to the running OS.</dd>
+<dt><a class="reference external" href="https://github.com/open-power/linux">Linux</a></dt>
+<dd>Once skiboot has finished setting up the machine, it hands control over
+to a Linux kernel. This kernel provides device drivers and userspace to
+run the bootloader, Petitboot. We maintain our own branch with a minimal
+number of patches on top of the latest upstream stable release.</dd>
+<dt><a class="reference external" href="https://github.com/open-power/petitboot/">Petitboot</a></dt>
+<dd>The bootloader. It is a normal user-space process running on Linux that
+searches the system for disks and network devices that it can boot the
+OS from.</dd>
+<dt><a class="reference external" href="https://github.com/open-power/hcode">HCODE</a></dt>
+<dd>Firmware for the power management PPE. Implements heavy lifting for deeper
+STOP states.</dd>
+</dl>
+</div>
+<div class="section" id="introductory-videos">
+<h2>Introductory Videos<a class="headerlink" href="#introductory-videos" title="Permalink to this headline">¶</a></h2>
+<p>There are a number of good recorded presentations from various conferences
+around the world that have overviews and deep dives into various parts of
+the firmware stack.</p>
+<p>Here, we present technical presentations that may be useful in learning
+about topics relevant to OpenPOWER firmware development.</p>
+<p>For broader OpenPOWER topics, check out the following channels:</p>
+<ul class="simple">
+<li><cite>OpenPOWER Foundation</cite> &lt;<a class="reference external" href="https://github.com/open-power/op-build/pull/2983">https://github.com/open-power/op-build/pull/2983</a>&gt;`_</li>
+</ul>
+<div class="section" id="introductory">
+<h3>Introductory<a class="headerlink" href="#introductory" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/a4XGvssR-ag?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe><iframe width="640" height="360" src="//www.youtube.com/embed/hcLhKjxa-40?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="secure-boot">
+<h3>Secure Boot<a class="headerlink" href="#secure-boot" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/hwB1bkXQep4?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="interfaces-and-standards">
+<h3>Interfaces and standards<a class="headerlink" href="#interfaces-and-standards" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/2TroT3ORw0s?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="opencapi">
+<h3>OpenCAPI<a class="headerlink" href="#opencapi" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/h3pLBDCqY-I?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe><iframe width="640" height="360" src="//www.youtube.com/embed/K4dhx0ctjkQ?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="xive-interrupt-controller">
+<h3>XIVE Interrupt Controller<a class="headerlink" href="#xive-interrupt-controller" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/s88beMQWkks?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="id1">
+<h3>Petitboot<a class="headerlink" href="#id1" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/4JbDb4bRBK4?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe><iframe width="640" height="360" src="//www.youtube.com/embed/oxmMJMibZQ8?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="booting-faster">
+<h3>Booting Faster<a class="headerlink" href="#booting-faster" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/fTLsS_QZ8us?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="testing">
+<h3>Testing<a class="headerlink" href="#testing" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/znEM2xqJhBU?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
+<div class="section" id="bringup-and-customisation">
+<h3>Bringup and customisation<a class="headerlink" href="#bringup-and-customisation" title="Permalink to this headline">¶</a></h3>
+<iframe width="640" height="360" src="//www.youtube.com/embed/v73Nw7NDxYI?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe><iframe width="640" height="360" src="//www.youtube.com/embed/dBEBQQYP_eI?feature=player_detailpage" frameborder="0" allowfullscreen="1">&nbsp;</iframe></div>
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+<h1 class="logo"><a href="index.html">OpenPOWER Firmware</a></h1>
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+<h3>Navigation</h3>
+<p class="caption"><span class="caption-text">Contents:</span></p>
+<ul class="current">
+<li class="toctree-l1 current"><a class="current reference internal" href="#">Introduction to OpenPOWER Firmware</a><ul>
+<li class="toctree-l2"><a class="reference internal" href="#firmware-components">Firmware Components</a></li>
+<li class="toctree-l2"><a class="reference internal" href="#introductory-videos">Introductory Videos</a></li>
+</ul>
+</li>
+<li class="toctree-l1"><a class="reference internal" href="testing.html">Testing op-build</a></li>
+<li class="toctree-l1"><a class="reference internal" href="process/index.html">Development Process</a></li>
+<li class="toctree-l1"><a class="reference internal" href="boot-devices.html">Supported Boot Devices</a></li>
+<li class="toctree-l1"><a class="reference internal" href="versioning.html">Version Scheme</a></li>
+<li class="toctree-l1"><a class="reference internal" href="release-notes/index.html">op-build Release Notes</a></li>
+</ul>
+
+<div class="relations">
+<h3>Related Topics</h3>
+<ul>
+  <li><a href="index.html">Documentation overview</a><ul>
+      <li>Previous: <a href="index.html" title="previous chapter">Welcome to OpenPOWER Firmware’s documentation!</a></li>
+      <li>Next: <a href="testing.html" title="next chapter">Testing op-build</a></li>
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