[Power] constant power "add-tag CP" fails on XO-4?

Adam Holt holt at laptop.org
Mon Jan 27 03:38:24 EST 2014

Thanks James.

The 3rd XO-4 in Haiti (Port-au-Prince this time) worked correctly,
auto-booting-on-application-of-power after adding the CP tag.  Its serial
number was something like something like SHC31000002

On Sun, Jan 26, 2014 at 6:59 PM, James Cameron <quozl at laptop.org> wrote:

> I've just tested.  On XO-4 you may have to wave your hands and poke
> your tongue out a different way.  After adding the tag, get back to
> the ok prompt and type this;
>     ?sync-ec
> If the ok prompt comes right back, all is ready, and the feature
> works.  If the laptop reboots, then it has sent the CP tag into the EC
> SPI FLASH, and the feature works.
> Appears to be a bug.  The ?sync-ec is coded to happen automatically
> when you add the CP tag.  Perhaps a delay is needed.
> New ticket: #12751.
> Background information: the XO-1.75 and XO-4 have two SPI FLASH chips,
> one for the embedded controller (EC) and one for the system.  The
> setting of the CP tag has to be stored in both chips, one by one.
> Old ticket that implemented the feature: #11493.
> --
> James Cameron
> http://quozl.linux.org.au/
> --
> Unsung Heroes of OLPC, interviewed live @ http://unleashkids.org !
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.laptop.org/pipermail/devel/attachments/20140127/d0531746/attachment.html>

More information about the Devel mailing list