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[people/ms/u-boot.git] / include / hw_sha.h
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1f9c9280
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1/*
2 * Header file for SHA hardware acceleration
3 *
4 * Copyright (c) 2012 Samsung Electronics
5 *
1a459660 6 * SPDX-License-Identifier: GPL-2.0+
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7 */
8#ifndef __HW_SHA_H
9#define __HW_SHA_H
94e3c8c4 10#include <hash.h>
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11
12/**
13 * Computes hash value of input pbuf using h/w acceleration
14 *
15 * @param in_addr A pointer to the input buffer
16 * @param bufleni Byte length of input buffer
17 * @param out_addr A pointer to the output buffer. When complete
18 * 32 bytes are copied to pout[0]...pout[31]. Thus, a user
19 * should allocate at least 32 bytes at pOut in advance.
20 * @param chunk_size chunk size for sha256
21 */
22void hw_sha256(const uchar * in_addr, uint buflen,
23 uchar * out_addr, uint chunk_size);
24
25/**
26 * Computes hash value of input pbuf using h/w acceleration
27 *
28 * @param in_addr A pointer to the input buffer
29 * @param bufleni Byte length of input buffer
30 * @param out_addr A pointer to the output buffer. When complete
31 * 32 bytes are copied to pout[0]...pout[31]. Thus, a user
32 * should allocate at least 32 bytes at pOut in advance.
33 * @param chunk_size chunk_size for sha1
34 */
35void hw_sha1(const uchar * in_addr, uint buflen,
36 uchar * out_addr, uint chunk_size);
94e3c8c4 37
38/*
39 * Create the context for sha progressive hashing using h/w acceleration
40 *
41 * @algo: Pointer to the hash_algo struct
42 * @ctxp: Pointer to the pointer of the context for hashing
43 * @return 0 if ok, -ve on error
44 */
45int hw_sha_init(struct hash_algo *algo, void **ctxp);
46
47/*
48 * Update buffer for sha progressive hashing using h/w acceleration
49 *
50 * The context is freed by this function if an error occurs.
51 *
52 * @algo: Pointer to the hash_algo struct
53 * @ctx: Pointer to the context for hashing
54 * @buf: Pointer to the buffer being hashed
55 * @size: Size of the buffer being hashed
56 * @is_last: 1 if this is the last update; 0 otherwise
57 * @return 0 if ok, -ve on error
58 */
59int hw_sha_update(struct hash_algo *algo, void *ctx, const void *buf,
60 unsigned int size, int is_last);
61
62/*
63 * Copy sha hash result at destination location
64 *
65 * The context is freed after completion of hash operation or after an error.
66 *
67 * @algo: Pointer to the hash_algo struct
68 * @ctx: Pointer to the context for hashing
69 * @dest_buf: Pointer to the destination buffer where hash is to be copied
70 * @size: Size of the buffer being hashed
71 * @return 0 if ok, -ve on error
72 */
73int hw_sha_finish(struct hash_algo *algo, void *ctx, void *dest_buf,
74 int size);
75
1f9c9280 76#endif