1 /*
2 * Copyright (c) 2021, Texas Instruments Incorporated
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of Texas Instruments Incorporated nor the names of
17 * its contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
27 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
28 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
29 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
30 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 /*
33 * ======== RNG.c ========
34 */
35
36 #include <stdlib.h>
37 #include <string.h>
38
39 #include <ti/drivers/dpl/DebugP.h>
40 #include <ti/drivers/dpl/SemaphoreP.h>
41 #include <ti/drivers/RNG.h>
42
43 /* Extern globals */
44 extern const RNG_Config RNG_config[];
45 extern const uint_least8_t RNG_count;
46
47 const RNG_Params RNG_defaultParams = {.returnBehavior = RNG_RETURN_BEHAVIOR_BLOCKING,
48 .cryptoKeyCallbackFxn = NULL,
49 .randomBitsCallbackFxn = NULL,
50 .timeout = SemaphoreP_WAIT_FOREVER};
51
52 /*
53 * ======== RNG_open ========
54 */
RNG_open(uint_least8_t index,const RNG_Params * params)55 RNG_Handle RNG_open(uint_least8_t index, const RNG_Params *params)
56 {
57 DebugP_assert(index <= RNG_count);
58
59 const RNG_Config *config = (const RNG_Config *)&RNG_config[index];
60
61 return RNG_construct(config, params);
62 }
63
