samv71_crypto.c
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1 /**
2  * @file samv71_crypto.c
3  * @brief SAMV71 hardware cryptographic accelerator
4  *
5  * @section License
6  *
7  * SPDX-License-Identifier: GPL-2.0-or-later
8  *
9  * Copyright (C) 2010-2024 Oryx Embedded SARL. All rights reserved.
10  *
11  * This file is part of CycloneCRYPTO Open.
12  *
13  * This program is free software; you can redistribute it and/or
14  * modify it under the terms of the GNU General Public License
15  * as published by the Free Software Foundation; either version 2
16  * of the License, or (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software Foundation,
25  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
26  *
27  * @author Oryx Embedded SARL (www.oryx-embedded.com)
28  * @version 2.4.0
29  **/
30 
31 //Switch to the appropriate trace level
32 #define TRACE_LEVEL CRYPTO_TRACE_LEVEL
33 
34 //Dependencies
35 #include "sam.h"
36 #include "core/crypto.h"
41 #include "debug.h"
42 
43 //Global variables
45 
46 
47 /**
48  * @brief Initialize hardware cryptographic accelerator
49  * @return Error code
50  **/
51 
53 {
54  error_t error;
55 
56  //Initialize status code
57  error = NO_ERROR;
58 
59  //Create a mutex to prevent simultaneous access to the hardware
60  //cryptographic accelerator
62  {
63  //Failed to create mutex
64  error = ERROR_OUT_OF_RESOURCES;
65  }
66 
67 #if (SAMV71_CRYPTO_TRNG_SUPPORT == ENABLED)
68  //Check status code
69  if(!error)
70  {
71  //Initialize TRNG module
72  error = trngInit();
73  }
74 #endif
75 
76 #if (SAMV71_CRYPTO_HASH_SUPPORT == ENABLED)
77  //Check status code
78  if(!error)
79  {
80  //Enable ICM peripheral clock
81  PMC_REGS->PMC_PCER1 = (1U << (ID_ICM - 32));
82  }
83 #endif
84 
85 #if (SAMV71_CRYPTO_CIPHER_SUPPORT == ENABLED)
86  //Check status code
87  if(!error)
88  {
89  //Enable AES peripheral clock
90  PMC_REGS->PMC_PCER1 = (1U << (ID_AES - 32));
91  }
92 #endif
93 
94  //Return status code
95  return error;
96 }
error_t trngInit(void)
TRNG module initialization.
General definitions for cryptographic algorithms.
Debugging facilities.
error_t
Error codes.
Definition: error.h:43
@ ERROR_OUT_OF_RESOURCES
Definition: error.h:64
@ NO_ERROR
Success.
Definition: error.h:44
bool_t osCreateMutex(OsMutex *mutex)
Create a mutex object.
OsMutex samv71CryptoMutex
Definition: samv71_crypto.c:44
error_t samv71CryptoInit(void)
Initialize hardware cryptographic accelerator.
Definition: samv71_crypto.c:52
SAMV71 hardware cryptographic accelerator.
SAMV71 cipher hardware accelerator.
SAMV71 hash hardware accelerator.
SAMV71 true random number generator.
Mutex object.