Commit 18306111 authored Jul 06, 2020 by Stefan Berger Committed by Jarkko Sakkinen Jul 24, 2020

acpi: Extend TPM2 ACPI table with missing log fields

Recent extensions of the TPM2 ACPI table added 3 more fields
including 12 bytes of start method specific parameters and Log Area
Minimum Length (u32) and Log Area Start Address (u64). So, we define
a new structure acpi_tpm2_phy that holds these optional new fields.
The new fields allow non-UEFI systems to access the TPM2's log.

The specification that has the new fields is the following:
  TCG ACPI Specification
  Family "1.2" and "2.0"
  Version 1.2, Revision 8

https://trustedcomputinggroup.org/wp-content/uploads/TCG_ACPIGeneralSpecification_v1.20_r8.pdf



Cc: linux-acpi@vger.kernel.org
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Stefan Berger <stefanb@linux.ibm.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>

parent 6c4e79d9

include/acpi/actbl3.h

+7 −0

Original line number	Diff line number	Diff line
		@@ -415,6 +415,13 @@ struct acpi_table_tpm2 {
		/* Platform-specific data follows */
		};

		/* Optional trailer for revision 4 holding platform-specific data */
		struct acpi_tpm2_phy {
		u8 start_method_specific[12];
		u32 log_area_minimum_length;
		u64 log_area_start_address;
		};

		/* Values for start_method above */

		#define ACPI_TPM2_NOT_ALLOWED 0

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