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<!DOCTYPE html> <!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]--> <!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]--> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>ppce500 generic platform (ppce500) — QEMU qemu-kvm-6.2.0-53.module+el8.10.0+2055+8eb7870b.4 documentation</title> <link rel="shortcut icon" href="../../_static/qemu_32x32.png"/> <link rel="stylesheet" href="../../_static/css/theme.css" type="text/css" /> <link rel="stylesheet" href="../../_static/pygments.css" type="text/css" /> <link rel="index" title="Index" href="../../genindex.html" /> <link rel="search" title="Search" href="../../search.html" /> <link rel="next" title="Prep machine (40p)" href="prep.html" /> <link rel="prev" title="PowerNV family boards (powernv8, powernv9)" href="powernv.html" /> <script src="../../_static/js/modernizr.min.js"></script> </head> <body class="wy-body-for-nav"> <div class="wy-grid-for-nav"> 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class="fa fa-bars"></i> <a href="../../index.html">QEMU</a> </nav> <div class="wy-nav-content"> <div class="rst-content"> <div role="navigation" aria-label="breadcrumbs navigation"> <ul class="wy-breadcrumbs"> <li><a href="../../index.html">Docs</a> »</li> <li><a href="../index.html">System Emulation</a> »</li> <li><a href="../targets.html">QEMU System Emulator Targets</a> »</li> <li><a href="../target-ppc.html">PowerPC System emulator</a> »</li> <li>ppce500 generic platform (<code class="docutils literal notranslate"><span class="pre">ppce500</span></code>)</li> <li class="wy-breadcrumbs-aside"> <a href="https://gitlab.com/qemu-project/qemu/blob/master/docs/system/ppc/ppce500.rst" class="fa fa-gitlab"> Edit on GitLab</a> </li> </ul> <hr/> </div> <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article"> <div itemprop="articleBody"> <div class="section" id="ppce500-generic-platform-ppce500"> <h1>ppce500 generic platform (<code class="docutils literal notranslate"><span class="pre">ppce500</span></code>)<a class="headerlink" href="#ppce500-generic-platform-ppce500" title="Permalink to this headline">¶</a></h1> <p>QEMU for PPC supports a special <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine designed for emulation and virtualization purposes.</p> <div class="section" id="supported-devices"> <h2>Supported devices<a class="headerlink" href="#supported-devices" title="Permalink to this headline">¶</a></h2> <p>The <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine supports the following devices:</p> <ul class="simple"> <li>PowerPC e500 series core (e500v2/e500mc/e5500/e6500)</li> <li>Configuration, Control, and Status Register (CCSR)</li> <li>Multicore Programmable Interrupt Controller (MPIC) with MSI support</li> <li>1 16550A UART device</li> <li>1 Freescale MPC8xxx I2C controller</li> <li>1 Pericom pt7c4338 RTC via I2C</li> <li>1 Freescale MPC8xxx GPIO controller</li> <li>Power-off functionality via one GPIO pin</li> <li>1 Freescale MPC8xxx PCI host controller</li> <li>VirtIO devices via PCI bus</li> <li>1 Freescale Enhanced Triple Speed Ethernet controller (eTSEC)</li> </ul> </div> <div class="section" id="hardware-configuration-information"> <h2>Hardware configuration information<a class="headerlink" href="#hardware-configuration-information" title="Permalink to this headline">¶</a></h2> <p>The <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine automatically generates a device tree blob (“dtb”) which it passes to the guest, if there is no <code class="docutils literal notranslate"><span class="pre">-dtb</span></code> option. This provides information about the addresses, interrupt lines and other configuration of the various devices in the system.</p> <p>If users want to provide their own DTB, they can use the <code class="docutils literal notranslate"><span class="pre">-dtb</span></code> option. These DTBs should have the following requirements:</p> <ul class="simple"> <li>The number of subnodes under /cpus node should match QEMU’s <code class="docutils literal notranslate"><span class="pre">-smp</span></code> option</li> <li>The /memory reg size should match QEMU’s selected ram_size via <code class="docutils literal notranslate"><span class="pre">-m</span></code></li> </ul> <p>Both <code class="docutils literal notranslate"><span class="pre">qemu-system-ppc</span></code> and <code class="docutils literal notranslate"><span class="pre">qemu-system-ppc64</span></code> provide emulation for the following 32-bit PowerPC CPUs:</p> <ul class="simple"> <li>e500v2</li> <li>e500mc</li> </ul> <p>Additionally <code class="docutils literal notranslate"><span class="pre">qemu-system-ppc64</span></code> provides support for the following 64-bit PowerPC CPUs:</p> <ul class="simple"> <li>e5500</li> <li>e6500</li> </ul> <p>The CPU type can be specified via the <code class="docutils literal notranslate"><span class="pre">-cpu</span></code> command line. If not specified, it creates a machine with e500v2 core. The following example shows an e6500 based machine creation:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ qemu-system-ppc64 -nographic -M ppce500 -cpu e6500 </pre></div> </div> </div> <div class="section" id="boot-options"> <h2>Boot options<a class="headerlink" href="#boot-options" title="Permalink to this headline">¶</a></h2> <p>The <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine can start using the standard -kernel functionality for loading a payload like an OS kernel (e.g.: Linux), or U-Boot firmware.</p> <p>When -bios is omitted, the default pc-bios/u-boot.e500 firmware image is used as the BIOS. QEMU follows below truth table to select which payload to execute:</p> <table border="1" class="docutils"> <colgroup> <col width="23%" /> <col width="45%" /> <col width="32%" /> </colgroup> <thead valign="bottom"> <tr class="row-odd"><th class="head">-bios</th> <th class="head">-kernel</th> <th class="head">payload</th> </tr> </thead> <tbody valign="top"> <tr class="row-even"><td>N</td> <td>N</td> <td>u-boot</td> </tr> <tr class="row-odd"><td>N</td> <td>Y</td> <td>kernel</td> </tr> <tr class="row-even"><td>Y</td> <td>don’t care</td> <td>u-boot</td> </tr> </tbody> </table> <p>When both -bios and -kernel are present, QEMU loads U-Boot and U-Boot in turns automatically loads the kernel image specified by the -kernel parameter via U-Boot’s built-in “bootm” command, hence a legacy uImage format is required in such scenario.</p> </div> <div class="section" id="running-linux-kernel"> <h2>Running Linux kernel<a class="headerlink" href="#running-linux-kernel" title="Permalink to this headline">¶</a></h2> <p>Linux mainline v5.11 release is tested at the time of writing. To build a Linux mainline kernel that can be booted by the <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine in 64-bit mode, simply configure the kernel using the defconfig configuration:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ <span class="nb">export</span> <span class="nv">ARCH</span><span class="o">=</span>powerpc $ <span class="nb">export</span> <span class="nv">CROSS_COMPILE</span><span class="o">=</span>powerpc-linux- $ make corenet64_smp_defconfig $ make menuconfig </pre></div> </div> <p>then manually select the following configuration:</p> <blockquote> <div>Platform support > Freescale Book-E Machine Type > QEMU generic e500 platform</div></blockquote> <p>To boot the newly built Linux kernel in QEMU with the <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ qemu-system-ppc64 -M ppce500 -cpu e5500 -smp <span class="m">4</span> -m 2G <span class="se">\</span> -display none -serial stdio <span class="se">\</span> -kernel vmlinux <span class="se">\</span> -initrd /path/to/rootfs.cpio <span class="se">\</span> -append <span class="s2">"root=/dev/ram"</span> </pre></div> </div> <p>To build a Linux mainline kernel that can be booted by the <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine in 32-bit mode, use the same 64-bit configuration steps except the defconfig file should use corenet32_smp_defconfig.</p> <p>To boot the 32-bit Linux kernel:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ qemu-system-ppc<span class="o">{</span><span class="m">64</span><span class="p">|</span><span class="m">32</span><span class="o">}</span> -M ppce500 -cpu e500mc -smp <span class="m">4</span> -m 2G <span class="se">\</span> -display none -serial stdio <span class="se">\</span> -kernel vmlinux <span class="se">\</span> -initrd /path/to/rootfs.cpio <span class="se">\</span> -append <span class="s2">"root=/dev/ram"</span> </pre></div> </div> </div> <div class="section" id="running-u-boot"> <h2>Running U-Boot<a class="headerlink" href="#running-u-boot" title="Permalink to this headline">¶</a></h2> <p>U-Boot mainline v2021.07 release is tested at the time of writing. To build a U-Boot mainline bootloader that can be booted by the <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine, use the qemu-ppce500_defconfig with similar commands as described above for Linux:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ <span class="nb">export</span> <span class="nv">CROSS_COMPILE</span><span class="o">=</span>powerpc-linux- $ make qemu-ppce500_defconfig </pre></div> </div> <p>You will get u-boot file in the build tree.</p> <p>When U-Boot boots, you will notice the following if using with <code class="docutils literal notranslate"><span class="pre">-cpu</span> <span class="pre">e6500</span></code>:</p> <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>CPU: Unknown, Version: 0.0, (0x00000000) Core: e6500, Version: 2.0, (0x80400020) </pre></div> </div> <p>This is because we only specified a core name to QEMU and it does not have a meaningful SVR value which represents an actual SoC that integrates such core. You can specify a real world SoC device that QEMU has built-in support but all these SoCs are e500v2 based MPC85xx series, hence you cannot test anything built for P4080 (e500mc), P5020 (e5500) and T2080 (e6500).</p> <p>By default a VirtIO standard PCI networking device is connected as an ethernet interface at PCI address 0.1.0, but we can switch that to an e1000 NIC by:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ qemu-system-ppc -M ppce500 -smp <span class="m">4</span> -m 2G <span class="se">\</span> -display none -serial stdio <span class="se">\</span> -bios u-boot <span class="se">\</span> -nic tap,ifname<span class="o">=</span>tap0,script<span class="o">=</span>no,downscript<span class="o">=</span>no,model<span class="o">=</span>e1000 </pre></div> </div> <p>The QEMU <code class="docutils literal notranslate"><span class="pre">ppce500</span></code> machine can also dynamically instantiate an eTSEC device if “-device eTSEC” is given to QEMU:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>-netdev tap,ifname<span class="o">=</span>tap0,script<span class="o">=</span>no,downscript<span class="o">=</span>no,id<span class="o">=</span>net0 -device eTSEC,netdev<span class="o">=</span>net0 </pre></div> </div> </div> </div> </div> </div> <footer> <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> <a href="prep.html" class="btn btn-neutral float-right" title="Prep machine (40p)" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a> <a href="powernv.html" class="btn btn-neutral" title="PowerNV family boards (powernv8, powernv9)" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left"></span> Previous</a> </div> <hr/> <div role="contentinfo"> <p> © Copyright 2021, The QEMU Project Developers. </p> </div> Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/rtfd/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>. <!-- Empty para to force a blank line after "Built with Sphinx ..." --> <p></p> <p>This documentation is for QEMU version 6.2.0.</p> <p><a href="../../about/license.html">QEMU and this manual are released under the GNU General Public License, version 2.</a></p> </footer> </div> </div> </section> </div> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT:'../../', VERSION:'qemu-kvm-6.2.0-53.module+el8.10.0+2055+8eb7870b.4', LANGUAGE:'None', COLLAPSE_INDEX:false, FILE_SUFFIX:'.html', HAS_SOURCE: false, SOURCELINK_SUFFIX: '.txt' }; </script> <script type="text/javascript" src="../../_static/jquery.js"></script> <script type="text/javascript" src="../../_static/underscore.js"></script> <script type="text/javascript" src="../../_static/doctools.js"></script> <script type="text/javascript" src="../../_static/js/theme.js"></script> <script type="text/javascript"> jQuery(function () { SphinxRtdTheme.Navigation.enable(true); }); </script> </body> </html>