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<h1 id="firstHeading" class="firstHeading">Using QEMU</h1>
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<h3 id="siteSub">From Milkymist Wiki</h3>
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<ul>
<li class="toclevel-1"><a href="index.php%3Ftitle=Using_QEMU.html#Build_and_Install_QEMU"><span class="tocnumber">1</span> <span class="toctext">Build and Install QEMU</span></a></li>
<li class="toclevel-1"><a href="index.php%3Ftitle=Using_QEMU.html#Basic_usage"><span class="tocnumber">2</span> <span class="toctext">Basic usage</span></a></li>
<li class="toclevel-1"><a href="index.php%3Ftitle=Using_QEMU.html#GDB"><span class="tocnumber">3</span> <span class="toctext">GDB</span></a></li>
<li class="toclevel-1"><a href="index.php%3Ftitle=Using_QEMU.html#Networking"><span class="tocnumber">4</span> <span class="toctext">Networking</span></a></li>
<li class="toclevel-1"><a href="index.php%3Ftitle=Using_QEMU.html#binfmt_misc"><span class="tocnumber">5</span> <span class="toctext">binfmt_misc</span></a></li>
<li class="toclevel-1"><a href="index.php%3Ftitle=Using_QEMU.html#Audio"><span class="tocnumber">6</span> <span class="toctext">Audio</span></a></li>
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<a name="Build_and_Install_QEMU" id="Build_and_Install_QEMU"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Using_QEMU&amp;action=edit&amp;section=1" title="Edit section: Build and Install QEMU">edit</a>]</span> <span class="mw-headline"> Build and Install QEMU </span></h1>
<p>Mico32 support is available in the QEMU source tree and in QEMU releases since 0.10. If your distribution packages an outdated version, you will need to build QEMU from the source code. To get the QEMU source code you will need the git version control system installed. You can get git from <a href="http://git-scm.com/" class="external text" title="http://git-scm.com/" rel="nofollow">git-scm.com</a>
</p><p>Prior to building QEMU sure you have libsdl-dev installed (following line works on debian &amp; ubuntu)&nbsp;:
</p>
<pre># aptitude install libsdl-dev
</pre>
<p>In fedora:
</p>
<pre># yum install SDL-devel
</pre>
<p>On OS X install SDL from source code (the frameworks installed by the SDL OS X disk image aren't recognized by the configure script):
</p>
<pre>$ curl <a href="http://www.libsdl.org/release/SDL-1.2.14.tar.gz" class="external free" title="http://www.libsdl.org/release/SDL-1.2.14.tar.gz" rel="nofollow">http://www.libsdl.org/release/SDL-1.2.14.tar.gz</a> -o SDL-1.2.14.tar.gz
$ tar xvzf SDL-1.2.14.tar.gz
$ cd SDL-1.2.14
$ ./configure
$ make
# make install
</pre>
<p>Checkout the latest version of the QEMU source code:
</p>
<pre>$ git clone git://git.qemu.org/qemu.git
$ cd qemu
</pre>
<p>Compile and install qemu for lm32 target with sdl support&nbsp;:
</p>
<pre>$ ./configure --target-list="lm32-softmmu" --enable-sdl [other options? see configure --help]
on OS X:
$ ./configure --target-list="lm32-softmmu" --enable-sdl --enable-cocoa
$ make
# make install
</pre>
<a name="Basic_usage" id="Basic_usage"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Using_QEMU&amp;action=edit&amp;section=2" title="Edit section: Basic usage">edit</a>]</span> <span class="mw-headline"> Basic usage </span></h1>
<p>Command line to run Flickernoise using qemu&nbsp;:
</p>
<pre>$ qemu-system-lm32 -M milkymist -kernel flickernoise
</pre>
<p>Command line to run Linux using qemu&nbsp;:
</p>
<pre>$ qemu-system-lm32 -M milkymist -nographic -kernel [ELF kernel] -initrd [initrd] \
-append "root=/dev/ram"
</pre>
<p>Command line to run the sample Hello World application&nbsp;:
</p>
<pre>$ qemu-system-lm32 -M milkymist -kernel compile-flickernoise/build_dir/bsp-milkymist/lm32-rtems4.11/c/milkymist/testsuites/samples/hello/hello.exe -nographic
</pre>
<a name="GDB" id="GDB"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Using_QEMU&amp;action=edit&amp;section=3" title="Edit section: GDB">edit</a>]</span> <span class="mw-headline"> GDB </span></h1>
<p>It is also possible to use GDB. For this purpose, add “-s -S” to the above command line, and run:
</p>
<pre> $ lm32-linux-gdb vmlinux
(gdb) target remote localhost:1234
</pre>
<a name="Networking" id="Networking"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Using_QEMU&amp;action=edit&amp;section=4" title="Edit section: Networking">edit</a>]</span> <span class="mw-headline"> Networking </span></h1>
<pre> $ lm32-softmmu/qemu-system-lm32 -M milkymist -kernel bios.elf
-nographic -net nic -net user,net=172.16.0.0/24,host=172.16.0.254,tftp=/milkymist
</pre>
<p>To use the real network: change the option to -net nic -net tap
</p>
<a name="binfmt_misc" id="binfmt_misc"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Using_QEMU&amp;action=edit&amp;section=5" title="Edit section: binfmt_misc">edit</a>]</span> <span class="mw-headline"> binfmt_misc </span></h1>
<ul><li> create a /usr/bin/mmqemu.sh file with:
</li></ul>
<pre>#!/bin/sh
exec qemu-system-lm32 -M milkymist -kernel $1
</pre>
<ul><li> make it executable
</li></ul>
<pre>chmod 755 /usr/bin/mmqemu.sh
</pre>
<ul><li> register the binfmt format
</li></ul>
<pre>echo ':lm32:M::\x7fELF\x01\x02\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x8a:\xff\xff\xff\xff\xff\xff\xff\x00\xff\xff\xff\xff\xff\xff\xff\xff\xff\xfe\xff\xff:/usr/bin/mmqemu.sh:' &gt; /proc/sys/fs/binfmt_misc/register
</pre>
<ul><li> you can now run MM binaries directly from the shell, i.e. "./flickernoise" will automatically run it in a QEMU window.
</li></ul>
<a name="Audio" id="Audio"></a><h1><span class="editsection">[<a href="http://milkymist.org/wiki/index.php?title=Using_QEMU&amp;action=edit&amp;section=6" title="Edit section: Audio">edit</a>]</span> <span class="mw-headline"> Audio </span></h1>
<p>In case having problems setting up right audio device just try this:
</p>
<pre>export QEMU_AUDIO_DRV=none
</pre>
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