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  <title>GXemul: ARM evaluation board emulation modes</title>
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<h1>GXemul: ARM evaluation board emulation modes</h1>
<p>

<a href="./">Back to the index.</a>

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<p>NetBSD's port to ARM evaluation boards is called NetBSD/evbarm.
Right now, the only such machine emulated in GXemul is the IQ80321.
<a href="#netbsdevbarminstall">NetBSD/evbarm</a> can be manually installed
and run in that mode.</p>









<p><br>
<a name="netbsdevbarminstall"></a>
<h3>NetBSD/evbarm:</h3>

<p>NetBSD/evbarm is tricky to install, because there is (as far as I know) no INSTALL
kernel. One way to install the NetBSD/evbarm distribution onto a disk
image is to install the files using another (emulated) machine.

<p><a href="20060218-netbsd-evbarm.png"><img src="20060218-netbsd-evbarm_small.png"></a>

<p>The following instructions will let you install NetBSD/evbarm onto a disk 
image, from an emulated CATS machine:

<p>
<ol>
  <li>Download a NetBSD/cats 3.1 ramdisk kernel:<pre>
	<b>wget <a href="ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/cats/binary/kernel/netbsd.aout-INSTALL.gz">ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-3.1/cats/binary/kernel/netbsd.aout-INSTALL.gz</a></b>

</pre>
  <li>Create an empty harddisk image, which will be the disk image
	that you will install NetBSD/evbarm onto:<pre>
	<b>dd if=/dev/zero of=nbsd_iq80321.img bs=1024 count=1 seek=999000</b>

</pre>
  <li>Download an IQ80321 kernel with wdc support, and the 2.1 ISO image:<pre>
	<a href="ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-2.1/evbarm/binary/kernel/">ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-2.1/evbarm/binary/kernel</a>/<a href="ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-2.1/evbarm/binary/kernel/netbsd-wd0-IQ80321.gz">netbsd-wd0-IQ80321.gz</a>
	<a href="ftp://ftp.netbsd.org/pub/NetBSD/iso/2.1/evbarmcd.iso">ftp://ftp.netbsd.org/pub/NetBSD/iso/2.1/evbarmcd.iso</a>

</pre>
  <p>
  <li>Now let's extract the files from the CD-ROM image onto the IQ80321's disk image. Start the 
	CATS machine using the following command line:<pre>
	<b>gxemul -XEcats -d nbsd_iq80321.img -d evbarmcd.iso netbsd.aout-INSTALL.gz</b>

</pre>Exit from the installer, and execute the following commands as <tt>root</tt>:
<p><table border="0"><tr><td><tt>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</tt></td><td><pre>

<b>disklabel -I -i wd0</b>
    (enter suitable commands, e.g. <i>a, 4.2BSD, 1c, 750M, b,
     swap, a, 200M, P, W, y, Q</i>)
<b>newfs /dev/wd0a; mount /dev/wd0a /mnt2; cd /mnt2
mount /dev/cd0a /mnt; sh
for a in /mnt/*/binary/sets/[bcegmt]*.tgz; do echo $a; tar zxfp $a; done
exit
cd dev; sh ./MAKEDEV all; cd ../etc
echo rc_configured=YES &gt;&gt; rc.conf
echo "/dev/wd0a / ffs rw 1 1" &gt; fstab
echo "/dev/wd0b none swap sw 0 0" &gt;&gt; fstab
cd /; umount /mnt; umount /mnt2; sync; halt</b>
</pre></td></tr></table>
</ol>

<p>You should now be able to boot NetBSD/evbarm using this command:<pre>
	<b>gxemul -x -E iq80321 -d nbsd_iq80321.img netbsd-wd0-IQ80321.gz</b>
</pre>









<p><br>



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