I think they are referring to part of the Chromium OS project, which seems to be open source firmware for basic device functions including "power sequencing, ke

I think they are referring to part of the Chromium OS project, which seems to be open source firmware for basic device functions including "power sequencing, keyboard control, thermal control, battery charging, and verified boot" [0] [0] https://chromium.googlesource.com/chromiumos/platform/ec/+/master/README.md https://chromium.googlesource.com/chromiumos/platform/ec/+/m...