From a557d258c6be49ec1253947a227189de149971df Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Tue, 30 Aug 2022 21:05:32 -0600 Subject: tpm: Require a digest source when extending the PCR This feature is used for measured boot, so we can add a log entry to the TCPA with some information about where the digest comes from. It is not currently supported in the TPM drivers, but add it to the API so that code which expects it can signal its request. Signed-off-by: Simon Glass Reviewed-by: Ilias Apalodimas Signed-off-by: Ilias Apalodimas --- lib/tpm_api.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) (limited to 'lib/tpm_api.c') diff --git a/lib/tpm_api.c b/lib/tpm_api.c index 032f383ca0..7e8df8795e 100644 --- a/lib/tpm_api.c +++ b/lib/tpm_api.c @@ -140,15 +140,17 @@ u32 tpm_write_lock(struct udevice *dev, u32 index) } u32 tpm_pcr_extend(struct udevice *dev, u32 index, const void *in_digest, - void *out_digest) + uint size, void *out_digest, const char *name) { - if (tpm_is_v1(dev)) + if (tpm_is_v1(dev)) { return tpm1_extend(dev, index, in_digest, out_digest); - else if (tpm_is_v2(dev)) + } else if (tpm_is_v2(dev)) { return tpm2_pcr_extend(dev, index, TPM2_ALG_SHA256, in_digest, TPM2_DIGEST_LEN); - else + /* @name is ignored as we do not support the TPM log here */ + } else { return -ENOSYS; + } } u32 tpm_pcr_read(struct udevice *dev, u32 index, void *data, size_t count) -- cgit v1.2.3