fwupd/plugins/optionrom/README.md
Richard Hughes 53de58f06d optionrom: Do not parse the image
The only real value of the optionrom plugin is the ability to store and verify
the ROM checksum; parsing the image is not actually required and is a source of
anxiety for various security teams.
2021-02-10 16:23:16 +00:00

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Markdown

OptionROM Support
=================
Introduction
------------
This plugin is also able to read and parse the firmware of some PCI devices
which allows some host state verification to be done.
GUID Generation
---------------
These devices use the standard USB DeviceInstanceId values, e.g.
* `PCI\VEN_%04X&DEV_%04X`
Vendor ID Security
------------------
The device is not upgradable and thus requires no vendor ID set.
External interface access
-------------------------
This plugin requires read access to the rom file of PCI devices (`/sys/class/pci_bus/*/device/rom`)