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<!DOCTYPE html>
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<title>GA-G41M-ES2L flashing tutorial</title>
</head>
<body>
<div class="section">
<h1 id="pagetop">GA-G41M-ES2L flashing tutorial</h1>
<p>
This guide is for those who want libreboot on their Intel GA-G41M-ES2L
motherboard while they still have the original BIOS present.
</p>
<p>
<a href="./">Back to main index</a>
</p>
</div>
<div class="section">
<h1 id="flashchips">Flash chip size</h1>
<p>
Use this to find out:<br/>
# <b>dmidecode | grep ROM\ Size</b>
</p>
<p>
<a href="#pagetop">Back to top of page.</a>
</p>
</div>
<div class="section">
<h1 id="clip">Flashing instructions</h1>
<p>
Refer to <a href="bbb_setup.html">bbb_setup.html</a> for how to
set up the BBB for external flashing.
<strong>
You can only externally reprogram one of the chips at a time, and
you need to disable the chip that you're not flashing, by connecting 3v3 to /CS of that chip, so you will actually need
2 test clips (you also need to connect GND on the chip that you're disabling).
</strong>
</p>
<p>
Here is an image of the flash chip:<br/>
<img alt="" src="../images/ga-g41m-es2l/ga-g41m-es2l.jpg" />
</p>
<p>
Internal flashing is possible. Boot with the proprietary BIOS
and GNU+Linux. There are 2 flash chips (one is backup).
</p>
<p>
Flash the first chip:
<br/>
<strong>./flashrom -p internal:dualbiosindex=0 -w libreboot.rom</strong>
</p>
<p>
Flash the second chip:
<br/>
<strong>./flashrom -p internal:dualbiosindex=1 -w libreboot.rom</strong>
</p>
<p>
NOTE: you can still boot the system with just the main flash chip connected,
after desoldering the backup chip. This has been tested while libreboot was
already installed onto the main chip.
</p>
<p>
NOTE: You need the latest flashrom. Just get it on flashrom.org from
their SVN or Git repos.
</p>
<p>
NOTE: due to a bug in the hardware, the MAC address is hardcoded in coreboot-libre.
Therefore, you must set your own MAC address in your operating system.
</p>
</div>
<div class="section">
<p>
Copyright © 2016 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
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.
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<p>
TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
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<p>
The disclaimer of warranties and limitation of liability provided
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