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[v2,0/5] efi/libstub: Fall back to CC proto for measurement

Message ID 20240307162214.272314-7-ardb+git@google.com
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Series efi/libstub: Fall back to CC proto for measurement | expand

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Ard Biesheuvel March 7, 2024, 4:22 p.m. UTC 
From: Ard Biesheuvel <ardb@kernel.org>

This is a follow-up to Kuppuswamy's series [0] to add TDX based
measurement of the initrd and command line to the EFI stub.

In view of time wrt the merge window, I've taken the liberty of applying
my review feedback to the code directly, rather than going back and
forth with the author to converge on something we can both agree on.

Changes since v1:
- add patch to switch to the TCG2 spec's symbolic GUID name for the
  final events table
- omit flex array member in efi_cc_event_t
- avoid version confusion between CC and TCG2 both using version 2

Cc: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Cc: Ilias Apalodimas <ilias.apalodimas@linaro.org>

[0] https://lore.kernel.org/all/20240215030002.281456-1-sathyanarayanan.kuppuswamy@linux.intel.com/

Ard Biesheuvel (3):
  efi/libstub: Fold efi_tcg2_tagged_event into efi_measured_event
  efi/tpm: Use symbolic GUID name from spec for final events table
  efi/libstub: Measure into CC protocol if TCG2 protocol is absent

Kuppuswamy Sathyanarayanan (2):
  efi/libstub: Add Confidential Computing (CC) measurement typedefs
  efi/libstub: Add get_event_log() support for CC platforms

 drivers/firmware/efi/efi.c                     |  3 +-
 drivers/firmware/efi/libstub/efi-stub-helper.c | 98 ++++++++++++++------
 drivers/firmware/efi/libstub/efi-stub.c        |  2 +-
 drivers/firmware/efi/libstub/efistub.h         | 90 ++++++++++++++++--
 drivers/firmware/efi/libstub/tpm.c             | 82 ++++++++++------
 drivers/firmware/efi/libstub/x86-stub.c        |  2 +-
 include/linux/efi.h                            |  5 +-
 7 files changed, 214 insertions(+), 68 deletions(-)