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<!DOCTYPE html>
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<title>ASUS KFSN4-DRE server/workstation board</title>
</head>
<body><div class="section"><p>If you're using libreboot from git, note that only CrOS devices build at the moment. We merged a newly rewritten build system recently, and we've yet to complete re-integration of older boards into Libreboot. Use Libreboot 20160907 for the time being, unless you're involved in libreboot development</p></div>
<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>
Flashing instructions can be found at <a href="../install/#flashrom">../install/#flashrom</a>
</p>
<p>
<a href="./">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 Leah Rowe <info@minifree.org><br/>
Permission is granted to copy, distribute and/or modify this document
under the terms of the Creative Commons Attribution-ShareAlike 4.0 International license
or any later version published by Creative Commons;
A copy of the license can be found at <a href="../cc-by-sa-4.0.txt">../cc-by-sa-4.0.txt</a>
</p>
<p>
Updated versions of the license (when available) can be found at
<a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode">https://creativecommons.org/licenses/by-sa/4.0/legalcode</a>
</p>
<p>
UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
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ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
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