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<section id="dump-mpipl-device-tree-binding">
<span id="device-tree-ibm-opal-dump"></span><h1>Dump (MPIPL) Device Tree Binding<a class="headerlink" href="#dump-mpipl-device-tree-binding" title="Permalink to this headline">¶</a></h1>
<p>See <a class="reference internal" href="../../mpipl.html#mpipl"><span class="std std-ref">MPIPL (aka FADUMP) Overview</span></a> for general MPIPL information.</p>
<section id="dump-node">
<h2>dump node<a class="headerlink" href="#dump-node" title="Permalink to this headline">¶</a></h2>
<div class="highlight-dts notranslate"><div class="highlight"><pre><span></span><span class="nc">dump</span> <span class="p">{</span>
<span class="cm">/*</span>
<span class="cm"> * Memory used by OPAL to load kernel/initrd from PNOR</span>
<span class="cm"> * (KERNEL_LOAD_BASE & INITRAMFS_LOAD_BASE). This is the</span>
<span class="cm"> * temporary memory used by OPAL during boot. Later Linux</span>
<span class="cm"> * kernel is free to use this memory. During MPIPL boot</span>
<span class="cm"> * also OPAL will overwrite this memory.</span>
<span class="cm"> *</span>
<span class="cm"> * OPAL will advertise these memory details to kernel.</span>
<span class="cm"> * If kernel is using these memory and needs these memory</span>
<span class="cm"> * content for proper dump creation, then it has to reserve</span>
<span class="cm"> * destination memory to preserve these memory ranges.</span>
<span class="cm"> * Also kernel should pass this detail during registration.</span>
<span class="cm"> * During MPIPL firmware will take care of preserving memory</span>
<span class="cm"> * and post MPIPL kernel can create proper dump.</span>
<span class="cm"> */</span>
<span class="nf">fw-load-area</span> <span class="o">=</span> <span class="p"><</span><span class="mh">0x0</span> <span class="mh">0x20000000</span> <span class="mh">0x0</span> <span class="mh">0x8000000</span> <span class="mh">0x0</span> <span class="mh">0x28000000</span> <span class="mh">0x0</span> <span class="mh">0x8000000</span><span class="p">>;</span>
<span class="cm">/* Compatible property */</span>
<span class="nf">compatible</span> <span class="o">=</span> <span class="s">"ibm,opal-dump"</span><span class="p">;</span>
<span class="nf">phandle</span> <span class="o">=</span> <span class="p"><</span><span class="mh">0x98</span><span class="p">>;</span>
<span class="cm">/*</span>
<span class="cm"> * This property indicates that its MPIPL boot. Kernel will use OPAL API</span>
<span class="cm"> * to retrieve metadata tags and use metadata to create dump.</span>
<span class="cm"> */</span>
<span class="err">mpipl-boot</span>
<span class="p">};</span>
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