[Power] constant power "add-tag CP" fails on XO-4?
holt at laptop.org
Mon Jan 27 03:38:24 EST 2014
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;
> 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
> Unsung Heroes of OLPC, interviewed live @ http://unleashkids.org !
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