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| author | Stefan Berger <stefanb@linux.ibm.com> | 2020-07-06 19:58:06 -0400 |
|---|---|---|
| committer | Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com> | 2020-07-24 09:29:21 +0300 |
| commit | 18306111e65bb99b6ec676d51728bbfe85fdacae (patch) | |
| tree | e6352aec6e55280374fd832336ba8e86e2b0ef55 /include/acpi | |
| parent | 6c4e79d99e6f42b79040f1a33cd4018f5425030b (diff) | |
| download | lwn-18306111e65bb99b6ec676d51728bbfe85fdacae.tar.gz lwn-18306111e65bb99b6ec676d51728bbfe85fdacae.zip | |
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>
Diffstat (limited to 'include/acpi')
| -rw-r--r-- | include/acpi/actbl3.h | 7 |
1 files changed, 7 insertions, 0 deletions
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 |