[PATCH v6 1/2] acpi: Extend TPM2 ACPI table with missing log fields
Jarkko Sakkinen
jarkko.sakkinen at linux.intel.com
Thu Jun 25 21:26:46 UTC 2020
On Thu, Jun 25, 2020 at 08:42:21AM -0400, Stefan Berger wrote:
> From: Stefan Berger <stefanb at linux.ibm.com>
>
> 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
>
> Signed-off-by: Stefan Berger <stefanb at linux.ibm.com>
> Cc: linux-acpi at vger.kernel.org
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki at intel.com>
> Cc: Jiandi An <anjiandi at codeaurora.org>
Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen at linux.intel.com>
/Jarkko
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