[PATCH 19/19] hash: Plumb crc8 into the hash functions

[Simon Glass]

Add an entry for crc8, with watchdog handling.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

 common/hash.c        | 8 ++++++++
 include/u-boot/crc.h | 3 +++
 lib/crc8.c           | 6 ++++++
 3 files changed, 17 insertions(+)

diff --git a/common/hash.c b/common/hash.c
index ac63803fed9..43c4e185750 100644
--- a/common/hash.c
+++ b/common/hash.c
@@ -304,6 +304,14 @@ static struct hash_algo hash_algo[] = {
 		.hash_update	= hash_update_crc16_ccitt,
 		.hash_finish	= hash_finish_crc16_ccitt,
 	},
+#if CONFIG_IS_ENABLED(CRC8)
+	{
+		.name		= "crc8",
+		.digest_size	= 1,
+		.chunk_size	= CHUNKSZ_CRC32,
+		.hash_func_ws	= crc8_wd_buf,
+	},
+#endif
 #if CONFIG_IS_ENABLED(CRC32)
 	{
 		.name		= "crc32",
diff --git a/include/u-boot/crc.h b/include/u-boot/crc.h
index 5174bd7ac41..b2badaf6a97 100644
--- a/include/u-boot/crc.h
+++ b/include/u-boot/crc.h
@@ -25,6 +25,9 @@
  */
 unsigned int crc8(unsigned int crc_start, const unsigned char *vptr, int len);
 
+void crc8_wd_buf(const unsigned char *input, unsigned int len,
+		 unsigned char output[1], unsigned int chunk_sz);
+
 /* lib/crc16.c - 16 bit CRC with polynomial x^16 + x^15 + x^2 + 1 */
 uint16_t crc16(uint16_t crc, const unsigned char *buffer, size_t len);
 
diff --git a/lib/crc8.c b/lib/crc8.c
index 20d46d16147..811e19917b4 100644
--- a/lib/crc8.c
+++ b/lib/crc8.c
@@ -32,3 +32,9 @@ unsigned int crc8(unsigned int crc, const unsigned char *vptr, int len)
 
 	return crc;
 }
+
+void crc8_wd_buf(const unsigned char *input, unsigned int len,
+		 unsigned char output[1], unsigned int chunk_sz)
+{
+	*output = crc8(0, input, len);
+}
-- 
2.34.1