1 /*
2  * SPDX-FileCopyrightText: 2015-2019 Cadence Design Systems, Inc.
3  *
4  * SPDX-License-Identifier: MIT
5  *
6  * SPDX-FileContributor: 2016-2022 Espressif Systems (Shanghai) CO LTD
7  */
8 
9 /*
10  * Copyright (c) 2015-2019 Cadence Design Systems, Inc.
11  *
12  * Permission is hereby granted, free of charge, to any person obtaining
13  * a copy of this software and associated documentation files (the
14  * "Software"), to deal in the Software without restriction, including
15  * without limitation the rights to use, copy, modify, merge, publish,
16  * distribute, sublicense, and/or sell copies of the Software, and to
17  * permit persons to whom the Software is furnished to do so, subject to
18  * the following conditions:
19  *
20  * The above copyright notice and this permission notice shall be included
21  * in all copies or substantial portions of the Software.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
26  * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
27  * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
28  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
29  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30  */
31 
32 /*******************************************************************************
33 *
34 *       XTENSA INITIALIZATION ROUTINES CODED IN C
35 *
36 *  This file contains miscellaneous Xtensa RTOS-generic initialization functions
37 *  that are implemented in C.
38 *
39 *******************************************************************************/
40 
41 
42 #ifdef XT_BOARD
43     #include "xtensa/xtbsp.h"
44 #endif
45 
46 #include "xtensa_rtos.h"
47 #include "sdkconfig.h"
48 #include "esp_idf_version.h"
49 #if ( ESP_IDF_VERSION < ESP_IDF_VERSION_VAL( 4, 2, 0 ) )
50     #include    "esp_clk.h"
51 #else
52     #if CONFIG_IDF_TARGET_ESP32
53         #include "esp32/clk.h"
54     #elif CONFIG_IDF_TARGET_ESP32S2
55         #include "esp32s2/clk.h"
56     #elif CONFIG_IDF_TARGET_ESP32S3
57         #include "esp32s3/clk.h"
58     #endif
59 #endif /* ESP_IDF_VERSION < ESP_IDF_VERSION_VAL(4, 2, 0) */
60 
61 #ifdef XT_RTOS_TIMER_INT
62 
63     unsigned _xt_tick_divisor = 0; /* cached number of cycles per tick */
64 
_xt_tick_divisor_init(void)65     void _xt_tick_divisor_init( void )
66     {
67         _xt_tick_divisor = esp_clk_cpu_freq() / XT_TICK_PER_SEC;
68     }
69 
70 /* Deprecated, to be removed */
xt_clock_freq(void)71     int xt_clock_freq( void )
72     {
73         return esp_clk_cpu_freq();
74     }
75 
76 #endif /* XT_RTOS_TIMER_INT */
77