Sergii Dmytruk 6da62684de util/cbmem: add parsing of TPM logs per specs ...

CBMEM can contain log in different forms (at most one is present):
 - coreboot-specific format (CBMEM_ID_TPM_CB_LOG exported as
   LB_TAG_TPM_CB_LOG)
 - TPM1.2 format (CBMEM_ID_TCPA_TCG_LOG)
 - TPM2 format (CBMEM_ID_TPM2_TCG_LOG)

The last two follow specifications by Trusted Computing Group, but until
now cbmem couldn't print them.  These formats were added not so long ago
in:
 - commit 4191dbf0c9 ("security/tpm: add TPM log format as per 1.2
   spec")
 - commit 53db677586 ("security/tpm: add TPM log format as per 2.0
   spec")

These changes make cbmem utility check for existence of TPM1.2/TPM2 logs
in CBMEM and add code necessary for parsing and printing of their
entries.

TEST=`cbmem -L` for CONFIG_TPM1=y case
TCPA log:
	Specification: 1.21
	Platform class: PC Client
TCPA log entry 1:
	PCR: 2
	Event type: Action
	Digest: 5622416ea417186aa1ac32b32c527ac09009fb5e
	Event data: FMAP: FMAP

TEST=`cbmem -L` for CONFIG_TPM2=y case
TPM2 log:
	Specification: 2.00
	Platform class: PC Client
TPM2 log entry 1:
	PCR: 2
	Event type: Action
	Digests:
		 SHA256: 68d27f08cb261463a6d004524333ac5db1a3c2166721785a6061327b6538657c
	Event data: FMAP: FMAP

Change-Id: Ib76dc7dec56dd1789a219539a1ac05a958f47a5c
Ticket: https://ticket.coreboot.org/issues/425
Signed-off-by: Krystian Hebel <krystian.hebel@3mdeb.com>
Signed-off-by: Michał Żygowski <michal.zygowski@3mdeb.com>
Signed-off-by: Sergii Dmytruk <sergii.dmytruk@3mdeb.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/68749
Reviewed-by: Paul Menzel <paulepanter@mailbox.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

2023-07-04 13:07:13 +00:00

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