243 lines
15 KiB
HTML
243 lines
15 KiB
HTML
<!DOCTYPE html>
|
||
<html class="writer-html5" lang="en" data-content_root="../">
|
||
<head>
|
||
<meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
|
||
|
||
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
|
||
<title>OpenRISC System emulator — QEMU Debian 1:8.2.2+ds-0ubuntu1.11 documentation</title>
|
||
<link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=fa44fd50" />
|
||
<link rel="stylesheet" type="text/css" href="../_static/css/theme.css?v=86f27845" />
|
||
<link rel="stylesheet" type="text/css" href="../_static/theme_overrides.css?v=08e6c168" />
|
||
|
||
|
||
<link rel="shortcut icon" href="../_static/qemu_32x32.png"/>
|
||
|
||
<script src="../_static/jquery.js?v=8dae8fb0"></script>
|
||
<script src="../_static/_sphinx_javascript_frameworks_compat.js?v=2cd50e6c"></script>
|
||
<script src="../_static/documentation_options.js?v=802af9f6"></script>
|
||
<script src="../_static/doctools.js?v=888ff710"></script>
|
||
<script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
|
||
<script src="../_static/custom.js?v=2ab9f71d"></script>
|
||
<script src="../_static/js/theme.js"></script>
|
||
<link rel="index" title="Index" href="../genindex.html" />
|
||
<link rel="search" title="Search" href="../search.html" />
|
||
<link rel="next" title="Or1ksim board" href="openrisc/or1k-sim.html" />
|
||
<link rel="prev" title="XIVE for sPAPR (pseries machines)" href="../specs/ppc-spapr-xive.html" />
|
||
</head>
|
||
|
||
<body class="wy-body-for-nav">
|
||
<div class="wy-grid-for-nav">
|
||
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
|
||
<div class="wy-side-scroll">
|
||
<div class="wy-side-nav-search" style="background: #802400" >
|
||
|
||
|
||
|
||
<a href="../index.html" class="icon icon-home">
|
||
QEMU
|
||
<img src="../_static/qemu_128x128.png" class="logo" alt="Logo"/>
|
||
</a>
|
||
<div class="version">
|
||
8.2.2
|
||
</div>
|
||
<div role="search">
|
||
<form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
|
||
<input type="text" name="q" placeholder="Search docs" aria-label="Search docs" />
|
||
<input type="hidden" name="check_keywords" value="yes" />
|
||
<input type="hidden" name="area" value="default" />
|
||
</form>
|
||
</div>
|
||
</div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
|
||
<p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
|
||
<ul class="current">
|
||
<li class="toctree-l1"><a class="reference internal" href="../about/index.html">About QEMU</a></li>
|
||
<li class="toctree-l1 current"><a class="reference internal" href="index.html">System Emulation</a><ul class="current">
|
||
<li class="toctree-l2"><a class="reference internal" href="introduction.html">Introduction</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="invocation.html">Invocation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="device-emulation.html">Device Emulation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="keys.html">Keys in the graphical frontends</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="mux-chardev.html">Keys in the character backend multiplexer</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="monitor.html">QEMU Monitor</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="images.html">Disk Images</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="virtio-net-failover.html">QEMU virtio-net standby (net_failover)</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="linuxboot.html">Direct Linux Boot</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="generic-loader.html">Generic Loader</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="guest-loader.html">Guest Loader</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="barrier.html">QEMU Barrier Client</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="vnc-security.html">VNC security</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="tls.html">TLS setup for network services</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="secrets.html">Providing secret data to QEMU</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="authz.html">Client authorization</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="gdb.html">GDB usage</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="replay.html">Record/replay</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="managed-startup.html">Managed start up options</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="bootindex.html">Managing device boot order with bootindex properties</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="cpu-hotplug.html">Virtual CPU hotplug</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="pr-manager.html">Persistent reservation managers</a></li>
|
||
<li class="toctree-l2 current"><a class="reference internal" href="targets.html">QEMU System Emulator Targets</a><ul class="current">
|
||
<li class="toctree-l3"><a class="reference internal" href="target-arm.html">Arm System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-avr.html">AVR System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-m68k.html">ColdFire System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-mips.html">MIPS System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-ppc.html">PowerPC System emulator</a></li>
|
||
<li class="toctree-l3 current"><a class="current reference internal" href="#">OpenRISC System emulator</a><ul>
|
||
<li class="toctree-l4"><a class="reference internal" href="#choosing-a-board-model">Choosing a board model</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#board-specific-documentation">Board-specific documentation</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#emulated-cpu-architecture-support">Emulated CPU architecture support</a></li>
|
||
<li class="toctree-l4"><a class="reference internal" href="#openrisc-cpu-features">OpenRISC CPU features</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-riscv.html">RISC-V System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-rx.html">RX System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-s390x.html">s390x System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-sparc.html">Sparc32 System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-sparc64.html">Sparc64 System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-i386.html">x86 System emulator</a></li>
|
||
<li class="toctree-l3"><a class="reference internal" href="target-xtensa.html">Xtensa System emulator</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l2"><a class="reference internal" href="security.html">Security</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="multi-process.html">Multi-process QEMU</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="confidential-guest-support.html">Confidential Guest Support</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="vm-templating.html">QEMU VM templating</a></li>
|
||
</ul>
|
||
</li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../user/index.html">User Mode Emulation</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../tools/index.html">Tools</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../interop/index.html">System Emulation Management and Interoperability</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../specs/index.html">System Emulation Guest Hardware Specifications</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="../devel/index.html">Developer Information</a></li>
|
||
</ul>
|
||
|
||
</div>
|
||
</div>
|
||
</nav>
|
||
|
||
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" style="background: #802400" >
|
||
<i data-toggle="wy-nav-top" 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="Page navigation">
|
||
<ul class="wy-breadcrumbs">
|
||
<li><a href="../index.html" class="icon icon-home" aria-label="Home"></a></li>
|
||
<li class="breadcrumb-item"><a href="index.html">System Emulation</a></li>
|
||
<li class="breadcrumb-item"><a href="targets.html">QEMU System Emulator Targets</a></li>
|
||
<li class="breadcrumb-item active">OpenRISC System emulator</li>
|
||
<li class="wy-breadcrumbs-aside">
|
||
<a href="https://gitlab.com/qemu-project/qemu/blob/master/docs/system/target-openrisc.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">
|
||
|
||
<section id="openrisc-system-emulator">
|
||
<span id="id1"></span><h1>OpenRISC System emulator<a class="headerlink" href="#openrisc-system-emulator" title="Link to this heading"></a></h1>
|
||
<p>QEMU can emulate 32-bit OpenRISC CPUs using the <code class="docutils literal notranslate"><span class="pre">qemu-system-or1k</span></code> executable.</p>
|
||
<p>OpenRISC CPUs are generally built into “system-on-chip” (SoC) designs that run
|
||
on FPGAs. These SoCs are based on the same core architecture as the or1ksim
|
||
(the original OpenRISC instruction level simulator) which QEMU supports. For
|
||
this reason QEMU does not need to support many different boards to support the
|
||
OpenRISC hardware ecosystem.</p>
|
||
<p>The OpenRISC CPU supported by QEMU is the <code class="docutils literal notranslate"><span class="pre">or1200</span></code>, it supports an MMU and can
|
||
run linux.</p>
|
||
<section id="choosing-a-board-model">
|
||
<h2>Choosing a board model<a class="headerlink" href="#choosing-a-board-model" title="Link to this heading"></a></h2>
|
||
<p>For QEMU’s OpenRISC system emulation, you must specify which board model you
|
||
want to use with the <code class="docutils literal notranslate"><span class="pre">-M</span></code> or <code class="docutils literal notranslate"><span class="pre">--machine</span></code> option; the default machine is
|
||
<code class="docutils literal notranslate"><span class="pre">or1k-sim</span></code>.</p>
|
||
<p>If you intend to boot Linux, it is possible to have a single kernel image that
|
||
will boot on any of the QEMU machines. To do this one would compile all required
|
||
drivers into the kernel. This is possible because QEMU will create a device tree
|
||
structure that describes the QEMU machine and pass a pointer to the structure to
|
||
the kernel. The kernel can then use this to configure itself for the machine.</p>
|
||
<p>However, typically users will have specific firmware images for a specific machine.</p>
|
||
<p>If you already have a system image or a kernel that works on hardware and you
|
||
want to boot with QEMU, check whether QEMU lists that machine in its <code class="docutils literal notranslate"><span class="pre">-machine</span>
|
||
<span class="pre">help</span></code> output. If it is listed, then you can probably use that board model. If
|
||
it is not listed, then unfortunately your image will almost certainly not boot
|
||
on QEMU. (You might be able to extract the filesystem and use that with a
|
||
different kernel which boots on a system that QEMU does emulate.)</p>
|
||
<p>If you don’t care about reproducing the idiosyncrasies of a particular
|
||
bit of hardware, such as small amount of RAM, no PCI or other hard disk, etc.,
|
||
and just want to run Linux, the best option is to use the <code class="docutils literal notranslate"><span class="pre">virt</span></code> board. This
|
||
is a platform which doesn’t correspond to any real hardware and is designed for
|
||
use in virtual machines. You’ll need to compile Linux with a suitable
|
||
configuration for running on the <code class="docutils literal notranslate"><span class="pre">virt</span></code> board. <code class="docutils literal notranslate"><span class="pre">virt</span></code> supports PCI, virtio
|
||
and large amounts of RAM.</p>
|
||
</section>
|
||
<section id="board-specific-documentation">
|
||
<h2>Board-specific documentation<a class="headerlink" href="#board-specific-documentation" title="Link to this heading"></a></h2>
|
||
<div class="toctree-wrapper compound">
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="openrisc/or1k-sim.html">Or1ksim board</a></li>
|
||
<li class="toctree-l1"><a class="reference internal" href="openrisc/virt.html">‘virt’ generic virtual platform</a></li>
|
||
</ul>
|
||
</div>
|
||
</section>
|
||
<section id="emulated-cpu-architecture-support">
|
||
<h2>Emulated CPU architecture support<a class="headerlink" href="#emulated-cpu-architecture-support" title="Link to this heading"></a></h2>
|
||
<div class="toctree-wrapper compound">
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="openrisc/emulation.html">OpenRISC 1000 CPU architecture support</a></li>
|
||
</ul>
|
||
</div>
|
||
</section>
|
||
<section id="openrisc-cpu-features">
|
||
<h2>OpenRISC CPU features<a class="headerlink" href="#openrisc-cpu-features" title="Link to this heading"></a></h2>
|
||
<div class="toctree-wrapper compound">
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="openrisc/cpu-features.html">CPU Features</a></li>
|
||
</ul>
|
||
</div>
|
||
</section>
|
||
</section>
|
||
|
||
|
||
</div>
|
||
</div>
|
||
<footer><div class="rst-footer-buttons" role="navigation" aria-label="Footer">
|
||
<a href="../specs/ppc-spapr-xive.html" class="btn btn-neutral float-left" title="XIVE for sPAPR (pseries machines)" accesskey="p" rel="prev"><span class="fa fa-arrow-circle-left" aria-hidden="true"></span> Previous</a>
|
||
<a href="openrisc/or1k-sim.html" class="btn btn-neutral float-right" title="Or1ksim board" accesskey="n" rel="next">Next <span class="fa fa-arrow-circle-right" aria-hidden="true"></span></a>
|
||
</div>
|
||
|
||
<hr/>
|
||
|
||
<div role="contentinfo">
|
||
<p>© Copyright 2025, The QEMU Project Developers.</p>
|
||
</div>
|
||
|
||
Built with <a href="https://www.sphinx-doc.org/">Sphinx</a> using a
|
||
<a href="https://github.com/readthedocs/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 8.2.2.</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>
|
||
jQuery(function () {
|
||
SphinxRtdTheme.Navigation.enable(true);
|
||
});
|
||
</script>
|
||
|
||
</body>
|
||
</html> |