Mark J. Foster wrote:
Ivan Krstić wrote:
When we do a power-off (i.e. init 0), the next start is a cold boot,
correct?
For the sake of discussion, let's say yes (though it isn't actually
the same at all).
To elaborate on this, the EC remains powered on even after the system
has been "shutdown". If the EC does have a "permanent" write-protect
(though I didn't see this in a quick scan through the spec), it will
therefore stay write-protected even after an "init 0" and subsequent
power-on.
In other words, we'd have to either remove the battery, possibly hold
down the power-button for four seconds, or come up with some other magic
condition, before the BIOS could be updated.
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