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 --- Changes since v1: - Added sha256 support to "hash" command instead of new sha256 command.
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.
Changes sice v3: - Changed command names to lower case in algo struct. - Added generic ace_sha config.
Changes sice v4: - Changed function names in struct algo. - Replaced ACE_SHA_TYPE to CHUNSZ in struct algo.
Changes sice v5: - Added file hw_sha.h. - Changed CONFIG_ACE_SHA to CONFIG_SHA_HW_ACCEL. - Renamed function names ace_sha1 and ace_sha256 to hw_sha1 and hw_sha256 respectively.
Changes sice v6: - Changed position of "hw_sha.h" among includes (alpha order). - Rebased patch.
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 f5badcb..5f46dc6 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> @@ -37,6 +38,23 @@ */ 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' * or 'sha1sum' commands. diff --git a/include/hw_sha.h b/include/hw_sha.h new file mode 100644 index 0000000..565e5a0 --- /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