From 18306111e65bb99b6ec676d51728bbfe85fdacae Mon Sep 17 00:00:00 2001 From: Stefan Berger Date: Mon, 6 Jul 2020 19:58:06 -0400 Subject: 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 Signed-off-by: Stefan Berger Acked-by: Rafael J. Wysocki Reviewed-by: Jarkko Sakkinen Reviewed-by: Jerry Snitselaar Signed-off-by: Jarkko Sakkinen --- include/acpi/actbl3.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/acpi/actbl3.h') diff --git a/include/acpi/actbl3.h b/include/acpi/actbl3.h index b0b163b9efc6..bdcac69fa6bd 100644 --- a/include/acpi/actbl3.h +++ b/include/acpi/actbl3.h @@ -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 -- cgit v1.2.3