A few months ago, ITE open sourced the initial IT8500 EC patch on this mailing list (<a href="http://www.flashrom.org/pipermail/flashrom/2010-August/004382.html">http://www.flashrom.org/pipermail/flashrom/2010-August/004382.html</a>) so that we could check it in to the Chromium OS branch. It didn&#39;t quite make it upstream, and has been updated since then.<br>

<br>The attached patch basically does the same thing and has been deployed and tested to work on the Cr-48. There are a few caveats, though:<br>- The boot BIOS straps register must be modified to select LPC. This can be done with the attached &quot;select_bbs.sh&quot; script (Install iotools (<a href="http://code.google.com/p/iotools/">http://code.google.com/p/iotools/</a>) before using select_bbs). We worked around this in the Chromium OS branch by adding a bus argument to the programmer option, ie &quot;flashrom -p internal:bus=lpc&quot;.<br>

<br>- It is very important to disable power management daemons before running Flashrom on this EC. I commented out the brute force method we use in the Chromium OS branch that disables powerd, since IIRC Carl-Daniel has a better approach in the works.<br>

<br>- Due to dependencies which may be introduced by the OEM/ODM EC firmware, the code is not guaranteed to work for anything other than the Cr-48.<div><br></div><div>- Carl-Daniel pointed out that the code might ignore the result of it87 init code. I&#39;ve attempted to mitigate this in the patch (see internal.c), but I think it&#39;s just the symptom of a larger problem with how we detect and initialize IO bridges, and should probably be dealt with in a separate patch.</div>

<div><br><i>Here is the text from the original patch submission:<br>The attached patch adds generalized support for IT8500/IT8502 embedded controllers.<br>The patch was developed by Google for Flashrom r1082, but applies cleanly against r1130.<br>

It was tested for IT8500E on a Chrome OS platform and may require modification<br>depending on ODM/OEM customization and EC firmware version.<br><br>This patch is not officially supported by ITE Tech Inc.</i><br><br>Signed-off-by: David Hendricks &lt;<a href="mailto:dhendrix@google.com">dhendrix@google.com</a>&gt;<div>

(The original patch also included a sign-off from Yung-chieh Lo @ Google and Donald Huang @ ITE).</div><div><br>--<br>David Hendricks (dhendrix)<br>Systems Software Engineer, Google Inc.<br></div></div>