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<h2><font color="#e00000">OpenBSD/loongson</font></h2>

<hr>

<p>
<a href="images/lemote.jpg">
<img src="images/lemote.jpg" width="600" height="400"
align="right"></a>

OpenBSD/loongson is a port intended to run on systems based upon the
Loongson (also known as <i>Godson</i>) 2E and 2F MIPS-compatible processors,
using the
<a href="http://www.pmon2000.com/">PMON</a> firmware and boot loader.

<p>
The current port maintainer is Miod Vallat
(<a href="mailto:miod@openbsd.org">miod@openbsd.org</a>).


<a name="toc"></a>
<h3><font color="#0000e0"><i>Table of contents</i></font></h3>
<ul>
  <li><a href="#history">History of the port</a>
  <li><a href="#hardware">Supported hardware</a>
  <li><a href="#status">Current status</a>
  <li><a href="#projects">Project list</a>
  <li><a href="#install">Getting and installing OpenBSD/loongson</a>
</ul>

<hr>
<a name="history"></a>
<h3><font color="#0000e0"><strong>History:</strong></font></h3>
<p>
The idea of an OpenBSD/loongson started when the EMTEC Gdium Liberty netbook
was announced. Unfortunately, the general availability of these machines kept
being delayed. Because of this, focus switched to the Lemote Yeeloong netbook
instead. After procrastinating for months, serious work started in august 2009,
and the kernel work was completed by the end of November 2009.
<p>
Unfortunately, most of the Loongson 2F-based hardware available at that time
suffers from serious problems in the processor's branch prediction logic,
causing the system to freeze, for which <b>no errata has been published</b>
except for an
<a href="http://sourceware.org/ml/binutils/2009-11/msg00387.html">e-mail</a>
on a toolchain mailing-list.
<p>
After a rush of adding silicon problems workarounds, the port to the Lemote
Yeeloong was completed and self hosting by the end of January 2010.
<p>
This solid foundation allowed for support for other designs to be added
pretty quickly, over the next couple of weeks.
<p>
And work continues...

<hr>
<a name="hardware"></a>
<h3><font color="#0000e0"><strong>Supported hardware:</strong></font></h3>
<p>
The OpenBSD/loongson kernel has generic support for systems built with either
Loongson 2E processors and Algorithmics Bonito64 PCI and memory controller,
or Loongson 2F processors with their integrated PCI/PCI-X and memory controller.
Specific hardware support is then written on a design-by-design basis.
<p>
At the moment, the following machines are supported:
<ul>
<li><a href="http://www.lemote.com/english/fuloong.html">Lemote Fuloong 2F
mini-PC</a>
<br>
All onboard devices but the audio controller, framebuffer and infrared port
are supported. The console must be on the serial port.
<li><a href="http://www.lemote.com/english/yeeloong.html">Lemote Yeeloong
netbook</a>
<br>
Both the 8.9" and 10.1" models are supported.
All on-board devices but the audio controller are supported.
<li><a href="http://www.gdium.com/en/product/liberty1000">EMTEC Gdium Liberty 1000 netbook</a>
<br>
All on-board devices but the wireless network interface and the audio controller
are supported.
(note that the on-board SD card reader does not support cards larger than 2GB)
</ul>

<hr>
<a name="status"></a>
<h3><font color="#0000e0"><strong>Current status:</strong></font></h3>

<p>
Development is currently pretty hectic at the moment, although it will slow
down in preparation for the first OpenBSD/loongson release.
<p>
All supported systems run multiuser, and a currently unaccelerated
X server is available for Lemote Yeeloong and Gdium Liberty systems.

<hr>
<a name="projects"></a>
<h3><font color="#0000e0"><strong>Projects (in no particular order):
</strong></font></h3>

<ul>
<li>Write a PMON-based bootloader able to load the kernel from a BSD filesystem,
instead of having to put the kernel file on a Linux filesystem.
<li>Improve installation procedure, which is still rough at the moment.
<li>Write support for the onboard audio controller on Fuloong, Yeeloong
and Gdium.
<li>Write a driver for the Sis 315 Pro framebuffer found on the Fuloong.
<li>Battery status on Yeeloong and Gdium Liberty.
<li>TOD clock on Gdium Liberty.
<li>CPU frequency scaling on 2F systems.
<li>Suspend/resume on Yeeloong and Gdium Liberty.
<li>Support more hardware as our developers get their hands on more
Loongson 2E- and 2F-based systems.
</ul>

<hr>
<a name="install"></a>
<h3><font color="#0000e0">
<strong>Getting and installing OpenBSD/loongson</strong>
</font></h3>

<p>
There is no OpenBSD/loongson formal release yet.
<!--
<p>
The latest supported OpenBSD/loongson release is
<a href="47.html">OpenBSD 4.7</a>.
Here are the
<a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/4.7/loongson/INSTALL.loongson">
OpenBSD/loongson 4.7 installation instructions
</a>.
-->

<p>
Snapshots are made available from time to time, in
<a href="ftp://ftp.OpenBSD.org/pub/OpenBSD/snapshots/loongson">this location</a>
as well as in a few
<a href="ftp.html">mirrors</a>.
Here are the
<a href="ftp://ftp.openbsd.org/pub/OpenBSD/snapshots/loongson/INSTALL.loongson">
OpenBSD/loongson snapshot installation instructions
</a> as well.

<hr>
<a href="plat.html">
<img height="24" width="24" src="back.gif" border="0" alt="Supported platforms">
</a>
<br>
<small><a href="mailto:www@openbsd.org">www@openbsd.org</a></small>
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