andrius
/
arm-trusted-firmware
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
arm-trusted-firmware/docs/components/measured_boot/event_log.rst

1.2 KiB
Raw Blame History

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> </head>

DTB binding for Event Log properties

This document describes the device tree format of Event Log properties. These properties are not related to a specific platform and can be queried from common code.

Dynamic configuration for Event Log

Measured Boot driver expects a tpm_event_log node with the following field in 'tb_fw_config', 'nt_fw_config' and 'tsp_fw_config' DTS files:

  • compatible [mandatory]
    • value type: <string>
    • Must be the string "arm,tpm_event_log".

Then a list of properties representing Event Log configuration, which can be used by Measured Boot driver. Each property is named according to the information it contains:

  • tpm_event_log_sm_addr [fvp_nt_fw_config.dts with OP-TEE]
    • value type: <u64>
    • Event Log base address in secure memory.

Note. Currently OP-TEE does not support reading DTBs from Secure memory and this property should be removed when this feature is supported.

  • tpm_event_log_addr [mandatory]
    • value type: <u64>
    • Event Log base address in non-secure memory.
  • tpm_event_log_size [mandatory]
    • value type: <u32>
    • Event Log size.
</html>