Luca Boccassi 9a725391f1 commands/efi/tpm: Call get_active_pcr_banks() only with TCG2 1.1 or newer ...

The call was added in the 1.1 revision of the spec, 1.0 does
not have it, and there are some machines out there with a TPM2
and a UEFI firmware that only supports version 1.0, so the
call fails in those cases. Check the reported version before
calling get_active_pcr_banks().

See Table 4 in section 6.2 of the TCG EFI Protocol Specification:

  https://trustedcomputinggroup.org/wp-content/uploads/EFI-Protocol-Specification-rev13-160330final.pdf

Fixes: f326c5c47 (commands/bli: Set LoaderTpm2ActivePcrBanks runtime variable)

Signed-off-by: Luca Boccassi <luca.boccassi@gmail.com>
Reviewed-by: Andrew Hamilton <adhamilt@gmail.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>

2025-10-11 15:36:54 +02:00

..

efifwsetup.c

guid: Unify GUID types

2023-06-01 11:45:00 +02:00

efitextmode.c

efi: Drop all uses of efi_call_XX() wrappers

2023-05-25 16:48:00 +02:00

fixvideo.c

Remove nested functions from PCI iterators.

2013-01-13 01:10:41 +00:00

loadbios.c

efi: Deduplicate configuration table search function

2023-11-06 22:47:16 +01:00

lsefi.c

types: Split aligned and packed guids

2023-11-08 05:04:24 +01:00

lsefimmap.c

commands: Remove trailing whitespaces

2022-03-14 15:44:26 +01:00

lsefisystab.c

commands/efi/lsefisystab: Print the UEFI specification revision in human readable form

2023-10-12 17:22:45 +02:00

lssal.c

efi: Deduplicate configuration table search function

2023-11-06 22:47:16 +01:00

smbios.c

efi: Deduplicate configuration table search function

2023-11-06 22:47:16 +01:00

tpm.c

commands/efi/tpm: Call get_active_pcr_banks() only with TCG2 1.1 or newer

2025-10-11 15:36:54 +02:00