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fwupd/plugins/tpm
History
Richard Hughes 58993ac005 trivial: Fix some error prefixes
2020-11-06 09:57:03 +00:00
..
fu-plugin-tpm.c Record the TPM version when reporting a UEFI update 2020-10-22 16:16:23 +01:00
fu-tpm-device.c trivial: Fix some error prefixes 2020-11-06 09:57:03 +00:00
fu-tpm-device.h Add many new plugins to support for the Host Security ID 2020-05-12 21:20:18 +01:00
meson.build Add a new plugin that exposes the system TPM device firmware version 2019-12-05 21:05:17 +00:00
README.md Add external interface messages 2020-10-26 12:05:20 -05:00
tpm.quirk Add a new plugin that exposes the system TPM device firmware version 2019-12-05 21:05:17 +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.