Finnbarr P. Murphy has a new blog post about viewing the TPM2 ACPI table:
[…] Why two definitions for the same header? The current ACPI standard defines the table description header as follows: […]
I believe that the second definition is closer to the intent of the ACPI. For a more detailed look at the actual TPM2 support in the EDK2, read the Intel white paper entitled A Tour Beyond BIOS with the UEFI TPM2 Support in EDKII by Jiewen Yao and Vincent J. Zimmer. […]
http://blog.fpmurphy.com/2016/03/examining-tpm2-acpi-table.html
Firmware Security 