Am 14.03.2019 11:46 schrieb Nico Huber:
Hi Martin,
Am 14.03.19 um 10:19 schrieb Martin Kepplinger:
So, I'm looking into h8 EC access.
Where does ec_set_bit(0x3a, 0) for audio-mute or ec_set_bit(0x3a, 6)
for wwan-enable
come from (let's keep that as an example)?
this uses a software interface that is defined by the program that runs
on the EC, aka the EC firmware. The EC firmware exposes an address
space
(usually up to 256B) for communication with the host firmware (e.g.
coreboot). Usually, there is *no* relation to hardware registers.
Ok. Patrick, do you have any more details on the interface here, and
what is
or isn't implemented in coreboot?
thanks
martin
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