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

[Simon Glass]

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 at 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
-- 
2.19.1.1215.g8438c0b245-goog