Stefan Berger @ 2020-07-06 11:19 MST: > From: Stefan Berger <stefanb@xxxxxxxxxxxxx> > > 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@xxxxxxxxxxxxx> > Cc: linux-acpi@xxxxxxxxxxxxxxx > Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx> > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> Reviewed-by: Jerry Snitselaar <jsnitsel@xxxxxxxxxx> > --- > include/acpi/actbl3.h | 7 +++++++ > 1 file changed, 7 insertions(+) > > 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
