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fwupd/plugins/tpm
History
Richard Hughes dfaae2e837 Move amdgpu safety check into the plugin 
There are now multiple plugins using drm_dp_aux_dev interface which
may potentially be combined with an amdgpu. Prevent exercising this
interface with any plugin using DP aux unless a new enough kernel is
installed.
2021-07-04 17:49:36 +01:00
..
fu-plugin-tpm.c Move amdgpu safety check into the plugin 2021-07-04 17:49:36 +01:00
fu-tpm-device.c Call the superclass directly from subclassed devices 2021-02-18 16:18:34 +00:00
fu-tpm-device.h trivial: fixup includes for a variety of plugins 2021-06-14 10:12:45 +01:00
meson.build Move the plugin build logic to the plugins themselves 2021-02-18 14:46:20 +00:00
README.md Add external interface messages 2020-10-26 12:05:20 -05:00
tpm.quirk Simplify the quirk file format 2021-03-03 08:30:34 +00:00

README.md

TPM Support

Introduction

This allows enumerating Trusted Platform Modules, also known as "TPM" devices, although it does not allow the user to update the firmware on them.

GUID Generation

These devices use custom GUIDs:

  • TPM\VEN_$(manufacturer)&DEV_$(type)
  • TPM\VEN_$(manufacturer)&MOD_$(vendor-string)
  • TPM\VEN_$(manufacturer)&DEV_$(type)_VER_$(family),
  • TPM\VEN_$(manufacturer)&MOD_$(vendor-string)_VER_$(family)

...where family is either 2.0 or 1.2

Example GUIDs from a real system containing a TPM from Intel:

  Guid:                 34801700-3a50-5b05-820c-fe14580e4c2d <- TPM\VEN_INTC&DEV_0000
  Guid:                 03f304f4-223e-54f4-b2c1-c3cf3b5817c6 <- TPM\VEN_INTC&DEV_0000&VER_2.0

Vendor ID Security

The device is not upgradable and thus requires no vendor ID set.

External interface access

This plugin uses the tpm2-tss library to access the TPM. It requires access to /sys/class/tpm.