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<!DOCTYPE html>
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<title>ASUS KFSN4-DRE server/workstation board</title>
</head>
<body>
<div class="section">
<h1 id="pagetop">ASUS KFSN4-DRE server/workstation board</h1>
<p>
This is a server board using AMD hardware (Fam10h). It can also be used
for building a high-powered workstation. Powered by libreboot.
</p>
<p>
<b>
NOTE: This board is unsupported in libreboot 20150518.
To use it in libreboot, for now, you must build for it
from source using the libreboot git repository.
</b>
</p>
<p>
Flashing instructions can be found at <a href="../install/index.html#flashrom">../install/index.html#flashrom</a>
</p>
<p>
<a href="index.html">Back to previous index</a>.
</p>
</div>
<div class="section">
<h1 id="formfactor">Form factor</h1>
<p>
These boards use the SSI EEB 3.61 form factor; make sure
that your case supports this. This form factor is similar
to E-ATX in that the size is identical, but the position of
the screws are different.
</p>
</div>
<div class="section">
<h1 id="flashchips">Flash chips</h1>
<p>
These boards use LPC flash (not SPI), in a PLCC socket. The default flash size
1MiB (8Mbits), and can be upgraded to 2MiB (16Mbits).
SST49LF080A is the default that the board uses.
SST49LF016C is an example of a 2MiB (16Mbits) chip, which might work.
It is believed that 2MiB (16Mbits) is the maximum size available for the flash chip.
</p>
<p>
<b>
DO NOT hot-swap the chip with your bare hands. Use a PLCC
chip extractor. These can be found online.
See <a href="http://www.coreboot.org/Developer_Manual/Tools#Chip_removal_tools">http://www.coreboot.org/Developer_Manual/Tools#Chip_removal_tools</a>
</b>
</p>
</div>
<div class="section">
<h1 id="graphics">Native graphics initialization</h1>
<p>
Native graphics initialization exists (XGI Z9s) for this board.
Framebuffer- and text-mode both work. A serial port is also
available.
</p>
</div>
<div class="section">
<h1>Memory</h1>
<p>
DDR2 533/667 Registered ECC. 16 slots. Total capacity up to 64GiB.
</p>
</div>
<div class="section">
<h1 id="hexcore">Hex-core CPUs</h1>
<p>
PCB revision 1.05G is the best version of this board (the
revision number will be printed on the board), because it
can use dual hex-core CPUs (Opteron 2400/8400 series). Other
revisions are believed to only support dual quad-core CPUs.
</p>
</div>
<div class="section">
<h1 id="issues">Current issues</h1>
<ul>
<li>
There seems to be a 30 second bootblock delay (observed by tpearson);
the system otherwise boots and works as expected.
See <a href="text/kfsn4-dre/bootlog.txt">text/kfsn4-dre/bootlog.txt</a>
- this uses the 'simple' bootblock, while tpearson uses the 'normal'
bootblock, which tpearson suspects may be a possible cause.
This person says that they will look into it.
<a href="http://review.coreboot.org/gitweb?p=board-status.git;a=blob;f=asus/kfsn4-dre/4.0-10101-g039edeb/2015-06-27T03:59:16Z/config.txt;h=4742905c185a93fbda8eb14322dd82c70641aef0;hb=055f5df4e000a97453dfad6c91c2d06ea22b8545">This config</a> doesn't have the issue.
</li>
<li>
Text-mode is a bit jittery (but still usable). (the jitter disappears
if using KMS, once the kernel starts. The jitter will remain, if
booting the kernel in text-mode).
</li>
</ul>
</div>
<div class="section">
<h1>Other information</h1>
<p>
<a href="ftp://ftp.sgi.com/public/Technical%20Support/Pdf%20files/Asus/kfsn4-dre.pdf">specifications</a>
</p>
</div>
<div class="section">
<p>
Copyright © 2015 Minifree Ltd <info@minifree.org><br/>
Permission is granted to copy, distribute and/or modify this document
under the terms of the GNU Free Documentation License, Version 1.3
or any later version published by the Free Software Foundation;
with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts.
A copy of the license can be found at <a href="../gfdl-1.3.txt">../gfdl-1.3.txt</a>
</p>
<p>
Updated versions of the license (when available) can be found at
<a href="https://www.gnu.org/licenses/licenses.html">https://www.gnu.org/licenses/licenses.html</a>
</p>
<p>
UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
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ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
</p>
<p>
TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
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</p>
<p>
The disclaimer of warranties and limitation of liability provided
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