From 1f9c92808aab4542939a864ed25776eef5790e60 Mon Sep 17 00:00:00 2001
From: Akshay Saraswat <akshay.s@samsung.com>
Date: Wed, 20 Mar 2013 21:00:58 +0000
Subject: [PATCH] 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>
---
common/hash.c | 18 +++++++++++++++++
include/hw_sha.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 68 insertions(+)
create mode 100644 include/hw_sha.h
diff --git a/common/hash.c b/common/hash.c
index f5badcb930..c9ac33e2c4 100644
--- 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
index 0000000000..264936ce48
--- /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
--
2.39.5