Run OFW heat spreader test
jvonau at shaw.ca
Mon Jan 23 00:23:02 EST 2012
On Sun, 2012-01-22 at 23:16 -0600, Jerry Vonau wrote:
> On Mon, 2012-01-23 at 00:02 -0500, Richard A. Smith wrote:
> > On 01/22/2012 09:00 PM, Sridhar Dhanapalan wrote:
> > > We are using a custom olpc.fth to present a boot menu so that users
> > > can easily flash their XOs. As a precaution, we run a lid switches
> > > test before the OS installation begins. Some of our XOs have older,
> > > less effective heat spreaders, and we would like to catch these before
> > > they get burnt-out by the flashing process.
> > The CPU has an internal thermal shutdown. It won't burn out. I run
> > 1.5's without heat spreaders all the time. The reason you want to catch
> > them is that fs-update will hang.
> > > The automatic lid switches test is confusing some teachers. Ideally we
> > > only want to run the heat spreader test part of it, so that the test
> > > is transparent and the user doesn't need to close the lid.
> > >
> > > Is this possible?
> > Yes. I don' have a 1.5 with me at the moment but from looking at the
> > OFW source I think you want ' .temp-rise '.
> > ok .temp-rise
> > That should run the thermal test and print a pass fail message. It also
> > returns back a true or false on the stack for if the test passes or fails.
> Thanks, looking into that part of OFW code.
.temp-rise returns a ? from the OK prompt.
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