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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>Microchip PolarFire SoC Icicle Kit (microchip-icicle-kit) — 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="Shakti C Reference Platform (shakti_c)" href="shakti-c.html" /> <link rel="prev" title="RISC-V System emulator" href="../target-riscv.html" /> <script src="../../_static/js/modernizr.min.js"></script> </head> <body 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<a href="https://gitlab.com/qemu-project/qemu/blob/master/docs/system/riscv/microchip-icicle-kit.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="microchip-polarfire-soc-icicle-kit-microchip-icicle-kit"> <h1>Microchip PolarFire SoC Icicle Kit (<code class="docutils literal notranslate"><span class="pre">microchip-icicle-kit</span></code>)<a class="headerlink" href="#microchip-polarfire-soc-icicle-kit-microchip-icicle-kit" title="Permalink to this headline">¶</a></h1> <p>Microchip PolarFire SoC Icicle Kit integrates a PolarFire SoC, with one SiFive’s E51 plus four U54 cores and many on-chip peripherals and an FPGA.</p> <p>For more details about Microchip PolarFire SoC, please see: <a class="reference external" href="https://www.microsemi.com/product-directory/soc-fpgas/5498-polarfire-soc-fpga">https://www.microsemi.com/product-directory/soc-fpgas/5498-polarfire-soc-fpga</a></p> <p>The Icicle Kit board information can be found here: <a class="reference external" href="https://www.microsemi.com/existing-parts/parts/152514">https://www.microsemi.com/existing-parts/parts/152514</a></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">microchip-icicle-kit</span></code> machine supports the following devices:</p> <ul class="simple"> <li>1 E51 core</li> <li>4 U54 cores</li> <li>Core Level Interruptor (CLINT)</li> <li>Platform-Level Interrupt Controller (PLIC)</li> <li>L2 Loosely Integrated Memory (L2-LIM)</li> <li>DDR memory controller</li> <li>5 MMUARTs</li> <li>1 DMA controller</li> <li>2 GEM Ethernet controllers</li> <li>1 SDHC storage controller</li> </ul> </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">microchip-icicle-kit</span></code> machine can start using the standard -bios functionality for loading its BIOS image, aka Hart Software Services (<a class="reference external" href="https://github.com/polarfire-soc/hart-software-services">HSS</a>). HSS loads the second stage bootloader U-Boot from an SD card. Then a kernel can be loaded from U-Boot. It also supports direct kernel booting via the -kernel option along with the device tree blob via -dtb. When direct kernel boot is used, the OpenSBI fw_dynamic BIOS image is used to boot a payload like U-Boot or OS kernel directly.</p> <p>The user provided DTB should have the following requirements:</p> <ul class="simple"> <li>The /cpus node should contain at least one subnode for E51 and the number of subnodes 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> <li>Should contain a node for the CLINT device with a compatible string “riscv,clint0”</li> </ul> <p>QEMU follows below truth table to select which payload to execute:</p> <table border="1" class="docutils"> <colgroup> <col width="16%" /> <col width="31%" /> <col width="31%" /> <col width="22%" /> </colgroup> <thead valign="bottom"> <tr class="row-odd"><th class="head">-bios</th> <th class="head">-kernel</th> <th class="head">-dtb</th> <th class="head">payload</th> </tr> </thead> <tbody valign="top"> <tr class="row-even"><td>N</td> <td>N</td> <td>don’t care</td> <td>HSS</td> </tr> <tr class="row-odd"><td>Y</td> <td>don’t care</td> <td>don’t care</td> <td>HSS</td> </tr> <tr class="row-even"><td>N</td> <td>Y</td> <td>Y</td> <td>kernel</td> </tr> </tbody> </table> <p>The memory is set to 1537 MiB by default which is the minimum required high memory size by HSS. A sanity check on ram size is performed in the machine init routine to prompt user to increase the RAM size to > 1537 MiB when less than 1537 MiB ram is detected.</p> </div> <div class="section" id="running-hss"> <h2>Running HSS<a class="headerlink" href="#running-hss" title="Permalink to this headline">¶</a></h2> <p>HSS 2020.12 release is tested at the time of writing. To build an HSS image that can be booted by the <code class="docutils literal notranslate"><span class="pre">microchip-icicle-kit</span></code> machine, type the following in the HSS source tree:</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>riscv64-linux- $ cp boards/mpfs-icicle-kit-es/def_config .config $ make <span class="nv">BOARD</span><span class="o">=</span>mpfs-icicle-kit-es </pre></div> </div> <p>Download the official SD card image released by Microchip and prepare it for QEMU usage:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ wget ftp://ftpsoc.microsemi.com/outgoing/core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic.gz $ gunzip core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic.gz $ qemu-img resize core-image-minimal-dev-icicle-kit-es-sd-20201009141623.rootfs.wic 4G </pre></div> </div> <p>Then we can boot the machine by:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ qemu-system-riscv64 -M microchip-icicle-kit -smp <span class="m">5</span> <span class="se">\</span> -bios path/to/hss.bin -sd path/to/sdcard.img <span class="se">\</span> -nic user,model<span class="o">=</span>cadence_gem <span class="se">\</span> -nic tap,ifname<span class="o">=</span>tap,model<span class="o">=</span>cadence_gem,script<span class="o">=</span>no <span class="se">\</span> -display none -serial stdio <span class="se">\</span> -chardev socket,id<span class="o">=</span>serial1,path<span class="o">=</span>serial1.sock,server<span class="o">=</span>on,wait<span class="o">=</span>on <span class="se">\</span> -serial chardev:serial1 </pre></div> </div> <p>With above command line, current terminal session will be used for the first serial port. Open another terminal window, and use <code class="docutils literal notranslate"><span class="pre">minicom</span></code> to connect the second serial port.</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ minicom -D unix<span class="se">\#</span>serial1.sock </pre></div> </div> <p>HSS output is on the first serial port (stdio) and U-Boot outputs on the second serial port. U-Boot will automatically load the Linux kernel from the SD card image.</p> </div> <div class="section" id="direct-kernel-boot"> <h2>Direct Kernel Boot<a class="headerlink" href="#direct-kernel-boot" title="Permalink to this headline">¶</a></h2> <p>Sometimes we just want to test booting a new kernel, and transforming the kernel image to the format required by the HSS bootflow is tedious. We can use ‘-kernel’ for direct kernel booting just like other RISC-V machines do.</p> <p>In this mode, the OpenSBI fw_dynamic BIOS image for ‘generic’ platform is used to boot an S-mode payload like U-Boot or OS kernel directly.</p> <p>For example, the following commands show building a U-Boot image from U-Boot mainline v2021.07 for the Microchip Icicle Kit board:</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>riscv64-linux- $ make microchip_mpfs_icicle_defconfig </pre></div> </div> <p>Then we can boot the machine by:</p> <div class="highlight-bash notranslate"><div class="highlight"><pre><span></span>$ qemu-system-riscv64 -M microchip-icicle-kit -smp <span class="m">5</span> -m 2G <span class="se">\</span> -sd path/to/sdcard.img <span class="se">\</span> -nic user,model<span class="o">=</span>cadence_gem <span class="se">\</span> -nic tap,ifname<span class="o">=</span>tap,model<span class="o">=</span>cadence_gem,script<span class="o">=</span>no <span class="se">\</span> -display none -serial stdio <span class="se">\</span> -kernel path/to/u-boot/build/dir/u-boot.bin <span class="se">\</span> -dtb path/to/u-boot/build/dir/u-boot.dtb </pre></div> </div> <p>CAVEATS:</p> <ul class="simple"> <li>Check the “stdout-path” property in the /chosen node in the DTB to determine which serial port is used for the serial console, e.g.: if the console is set to the second serial port, change to use “-serial null -serial stdio”.</li> <li>The default U-Boot configuration uses CONFIG_OF_SEPARATE hence the ELF image <code class="docutils literal notranslate"><span class="pre">u-boot</span></code> cannot be passed to “-kernel” as it does not contain the DTB hence <code class="docutils literal notranslate"><span class="pre">u-boot.bin</span></code> has to be used which does contain one. To use the ELF image, we need to change to CONFIG_OF_EMBED or CONFIG_OF_PRIOR_STAGE.</li> </ul> </div> </div> </div> </div> <footer> <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation"> <a href="shakti-c.html" class="btn btn-neutral float-right" title="Shakti C Reference Platform (shakti_c)" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right"></span></a> <a href="../target-riscv.html" class="btn btn-neutral" title="RISC-V System emulator" 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>