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f56878ff88
fwupd/plugins/tpm
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Richard Hughes f56878ff88 Allow adding GUIDs to each HSI security attr 
This indicates the GUID in some way contributed to the result decided.

It also allows us to match the submitted HSI results back to a firmware
stream on the LVFS, which allows us to allow vendors to see a subset of
results for uploaded devices.
2021-09-03 22:03:28 +01:00
..
fu-plugin-tpm.c Allow adding GUIDs to each HSI security attr 2021-09-03 22:03:28 +01:00
fu-tpm-device.c trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
fu-tpm-device.h trivial: reformat the whole tree to match new format 2021-08-24 11:18:40 -05:00
meson.build Move the plugin build logic to the plugins themselves 2021-02-18 14:46:20 +00:00
README.md trivial: update markdown for pre-commit style 2021-07-18 14:42:47 -05:00
tpm.quirk Simplify the quirk file format 2021-03-03 08:30:34 +00:00

README.md

TPM

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.