[U-Boot] [PATCH 3/4 v3] gen: Add ACE acceleration to hash

[Akshay Saraswat]

ACE H/W acceleration support is added to hash
which can be used to test SHA 256 hash algorithm.

Tested with command "hash sha256 0x40008000 0x2B 0x40009000".
Used mm and md to write a standard string to memory location
0x40008000 and ran the above command to verify the output.

Change-Id: If76820057763e833a6150e55bffea3d010b86721
Signed-off-by: ARUN MANKUZHI <arun.m at samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s at samsung.com>
---
Changes sice v2:
	- Added new nodes for SHA1 and SHA256 in struct hash_algo for the case when ACE is enabled.
	- Added new declaration for function pointer hash_func_ws with different return type.

 common/hash.c  | 15 +++++++++++++++
 include/hash.h |  5 +++++
 2 files changed, 20 insertions(+)

diff --git a/common/hash.c b/common/hash.c
index e3a6e43..b8f9d29 100644
--- a/common/hash.c
+++ b/common/hash.c
@@ -28,12 +28,26 @@
 #include <hash.h>
 #include <sha1.h>
 #include <sha256.h>
+#include <ace_sha.h>
 
 /*
  * These are the hash algorithms we support. Chips which support accelerated
  * crypto could perhaps add named version of these algorithms here.
  */
 static struct hash_algo hash_algo[] = {
+#ifdef CONFIG_EXYNOS_ACE_SHA
+	{
+		"SHA1",
+		SHA1_SUM_LEN,
+		ace_sha_hash_digest,
+		ACE_SHA_TYPE_SHA1,
+	}, {
+		"SHA256",
+		SHA256_SUM_LEN,
+		ace_sha_hash_digest,
+		ACE_SHA_TYPE_SHA256,
+	},
+#else
 #ifdef CONFIG_SHA1
 	{
 		"SHA1",
@@ -50,6 +64,7 @@ static struct hash_algo hash_algo[] = {
 		CHUNKSZ_SHA256,
 	},
 #endif
+#endif
 };
 
 /**
diff --git a/include/hash.h b/include/hash.h
index 34ba558..83e1fb6 100644
--- a/include/hash.h
+++ b/include/hash.h
@@ -40,8 +40,13 @@ struct hash_algo {
 	 * @output:	Checksum result (length depends on algorithm)
 	 * @chunk_sz:	Trigger watchdog after processing this many bytes
 	 */
+#ifdef CONFIG_EXYNOS_ACE_SHA
+	int (*hash_func_ws)(const unsigned char *input, unsigned int ilen,
+		unsigned char *output, unsigned int chunk_sz);
+#else
 	void (*hash_func_ws)(const unsigned char *input, unsigned int ilen,
 		unsigned char *output, unsigned int chunk_sz);
+#endif
 	int chunk_size;				/* Watchdog chunk size */
 };
 
-- 
1.8.0