fwupd/plugins/superio/README.md

SuperIO

This plugin enumerates the various ITE85* SuperIO embedded controller ICs found in many laptops. Vendors wanting to expose the SuperIO functionality will need to add a HwId quirk entry to superio.quirk.

See https://en.wikipedia.org/wiki/Super_I/O for more details about SuperIO and what the EC actually does.

Other useful links:

• https://raw.githubusercontent.com/system76/ecflash/master/ec.py
• https://github.com/system76/firmware-update/tree/master/src
• https://github.com/coreboot/coreboot/blob/master/util/superiotool/superiotool.h
• https://github.com/flashrom/flashrom/blob/master/it85spi.c
• http://wiki.laptop.org/go/Ec_specification

GUID Generation

These devices use a custom GUID generated using the SuperIO chipset name:

• SuperIO-$(chipset), for example SuperIO-IT8512

Vendor ID Security

The vendor ID is set from the baseboard vendor, for example DMI:Star Labs

External interface access

This plugin requires access to raw system memory via inb/outb.