[flashrom] [PATCH] Initial ITE IT8500 EC support (second try)

[David Hendricks]

...and the select_bbs.sh script.

I need more coffee.

On Mon, Jan 31, 2011 at 3:54 PM, David Hendricks <dhendrix at google.com>wrote:

> argh! of course I forgot to actually attach the patch. Here we go again:
>
>
> On Mon, Jan 31, 2011 at 3:53 PM, David Hendricks <dhendrix at google.com>wrote:
>
>> A few months ago, ITE open sourced the initial IT8500 EC patch on this
>> mailing list (
>> http://www.flashrom.org/pipermail/flashrom/2010-August/004382.html) so
>> that we could check it in to the Chromium OS branch. It didn't quite make it
>> upstream, and has been updated since then.
>>
>> 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:
>> - The boot BIOS straps register must be modified to select LPC. This can
>> be done with the attached "select_bbs.sh" script (Install iotools (
>> http://code.google.com/p/iotools/) before using select_bbs). We worked
>> around this in the Chromium OS branch by adding a bus argument to the
>> programmer option, ie "flashrom -p internal:bus=lpc".
>>
>> - 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.
>>
>> - 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.
>>
>> - Carl-Daniel pointed out that the code might ignore the result of it87
>> init code. I've attempted to mitigate this in the patch (see internal.c),
>> but I think it'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.
>>
>> *Here is the text from the original patch submission:
>> The attached patch adds generalized support for IT8500/IT8502 embedded
>> controllers.
>> The patch was developed by Google for Flashrom r1082, but applies cleanly
>> against r1130.
>> It was tested for IT8500E on a Chrome OS platform and may require
>> modification
>> depending on ODM/OEM customization and EC firmware version.
>>
>> This patch is not officially supported by ITE Tech Inc.*
>>
>> Signed-off-by: David Hendricks <dhendrix at google.com>
>> (The original patch also included a sign-off from Yung-chieh Lo @ Google
>> and Donald Huang @ ITE).
>>
>> --
>> David Hendricks (dhendrix)
>> Systems Software Engineer, Google Inc.
>>
>
>
> Signed-off-by: David Hendricks <dhendrix at google.com>
>
> --
> David Hendricks (dhendrix)
> Systems Software Engineer, Google Inc.
>

Signed-off-by: David Hendricks <dhendrix at google.com>

-- 
David Hendricks (dhendrix)
Systems Software Engineer, Google Inc.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.flashrom.org/pipermail/flashrom/attachments/20110131/fda2625c/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: select_bbs.sh
Type: application/x-sh
Size: 2223 bytes
Desc: not available
URL: <http://www.flashrom.org/pipermail/flashrom/attachments/20110131/fda2625c/attachment.sh>