[U-Boot] [PATCH v2 2/5] tpm: Add a constant for the minimum supported digest size

When SHA1 is used we need 20 bytes for the digest size. Add a constant so that clients can make use of this, e.g. to allocate local buffers.

Signed-off-by: Simon Glass sjg@chromium.org ---

Changes in v2: - Split out from main TPM patch

include/tpm-common.h | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/include/tpm-common.h b/include/tpm-common.h index 5f8bc6bc528..449ad4c96e1 100644 --- a/include/tpm-common.h +++ b/include/tpm-common.h @@ -26,6 +26,8 @@ enum tpm_duration { /* Max buffer size supported by our tpm */ #define TPM_DEV_BUFSIZE 1260

+#define TPM_PCR_MINIMUM_DIGEST_SIZE 20 + /** * enum tpm_version - The version of the TPM stack to be used * @TPM_V1: Use TPM v1.x stack