gen: Add sha h/w acceleration to hash

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

Signed-off-by: ARUN MANKUZHI <arun.m@samsung.com>
Signed-off-by: Akshay Saraswat <akshay.s@samsung.com>
Acked-by: Simon Glass <sjg@chromium.org>

diff --git a/common/hash.c b/common/hash.c
index f5badcb930075c3f535b162507a707492e8a2e70..c9ac33e2c40ac3d48c4db79f323b0ed645a27274 100644 (file)
--- a/common/hash.c
+++ b/common/hash.c
@@ -25,6 +25,7 @@
 
 #include <common.h>
 #include <command.h>
+#include <hw_sha.h>
 #include <hash.h>
 #include <sha1.h>
 #include <sha256.h>
@@ -36,6 +37,23 @@
  * algorithm names must be in lower case.
  */
 static struct hash_algo hash_algo[] = {
+       /*
+        * CONFIG_SHA_HW_ACCEL is defined if hardware acceleration is
+        * available.
+        */
+#ifdef CONFIG_SHA_HW_ACCEL
+       {
+               "sha1",
+               SHA1_SUM_LEN,
+               hw_sha1,
+               CHUNKSZ_SHA1,
+       }, {
+               "sha256",
+               SHA256_SUM_LEN,
+               hw_sha256,
+               CHUNKSZ_SHA256,
+       },
+#endif
        /*
         * This is CONFIG_CMD_SHA1SUM instead of CONFIG_SHA1 since otherwise
         * it bloats the code for boards which use SHA1 but not the 'hash'

diff --git a/include/hw_sha.h b/include/hw_sha.h
new file mode 100644 (file)
index 0000000..264936c
--- /dev/null
+++ b/include/hw_sha.h
@@ -0,0 +1,50 @@
+/*
+ * Header file for SHA hardware acceleration
+ *
+ * Copyright (c) 2012  Samsung Electronics
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#ifndef __HW_SHA_H
+#define __HW_SHA_H
+
+
+/**
+ * Computes hash value of input pbuf using h/w acceleration
+ *
+ * @param in_addr      A pointer to the input buffer
+ * @param bufleni      Byte length of input buffer
+ * @param out_addr     A pointer to the output buffer. When complete
+ *                     32 bytes are copied to pout[0]...pout[31]. Thus, a user
+ *                     should allocate at least 32 bytes at pOut in advance.
+ * @param chunk_size   chunk size for sha256
+ */
+void hw_sha256(const uchar * in_addr, uint buflen,
+                       uchar * out_addr, uint chunk_size);
+
+/**
+ * Computes hash value of input pbuf using h/w acceleration
+ *
+ * @param in_addr      A pointer to the input buffer
+ * @param bufleni      Byte length of input buffer
+ * @param out_addr     A pointer to the output buffer. When complete
+ *                     32 bytes are copied to pout[0]...pout[31]. Thus, a user
+ *                     should allocate at least 32 bytes at pOut in advance.
+ * @param chunk_size   chunk_size for sha1
+ */
+void hw_sha1(const uchar * in_addr, uint buflen,
+                       uchar * out_addr, uint chunk_size);
+#endif