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fwupd/plugins/tpm
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Richard Hughes faa35e430b Show a warning if the device has no GType and the plugin has no default 
This also renames a symbol to make it clear that you can call it more than once.

Fixes https://github.com/fwupd/fwupd/issues/3148
2021-04-15 16:52:56 +01:00
..
fu-plugin-tpm.c Show a warning if the device has no GType and the plugin has no default 2021-04-15 16:52:56 +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 Add many new plugins to support for the Host Security ID 2020-05-12 21:20:18 +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.