1 /*
2  * Copyright (C) 2016-2017 The Android Open Source Project
3  * Copyright 2017 NXP
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 #include <assert.h>
19 #include <stdio.h>
20 #include <stdlib.h>
21 #include <string.h>
22 #include <uapi/err.h>
23 
24 #include "caam.h"
25 #include "common.h"
26 #include "hwrng_srv_priv.h"
27 
28 #define TLOG_TAG "hwrng_caam"
29 #include <trusty_log.h>
30 
hwrng_dev_get_rng_data(uint8_t * buf,size_t buf_len)31 void hwrng_dev_get_rng_data(uint8_t* buf, size_t buf_len) {
32     uint32_t res = caam_hwrng(buf, buf_len);
33     assert(res == CAAM_SUCCESS);
34 }
35 
hwrng_init_srv_provider(void)36 void hwrng_init_srv_provider(void) {
37     int rc;
38 
39     TLOGE("Init HWRNG service provider\n");
40     /* Nothing to initialize here, just start service */
41     rc = hwrng_start_service();
42     if (rc != NO_ERROR) {
43         TLOGE("failed (%d) to start HWRNG service\n", rc);
44     }
45 }
46