Dear coreboot folks,
Some Google Chromebooks come with a Google Wilco EC (EC_GOOGLE_WILCO)
instead of Google Chrome EC. coreboot implements the interface for the
Google Wilco EC.
Unfortunately, I was unable to find more details on the firmware.
Phoronix claims is “open-source firmware” [1].
It’d be great if somebody could provide some details.
The Wilco EC firmware is a modified version of Dell's typical Latitude EC that implements a custom mailbox protocol similar to the one we use in the Chromium EC.
This particular EC firmware is not open source unfortunately, just the host-side interfaces (kernel and firmware drivers).
-duncan