1 /*******************************************************************************
2 // Copyright (c) 2003-2015 Cadence Design Systems, Inc.
3 //
4 // Permission is hereby granted, free of charge, to any person obtaining
5 // a copy of this software and associated documentation files (the
6 // "Software"), to deal in the Software without restriction, including
7 // without limitation the rights to use, copy, modify, merge, publish,
8 // distribute, sublicense, and/or sell copies of the Software, and to
9 // permit persons to whom the Software is furnished to do so, subject to
10 // the following conditions:
11 //
12 // The above copyright notice and this permission notice shall be included
13 // in all copies or substantial portions of the Software.
14 //
15 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
18 // IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
19 // CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
20 // TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
21 // SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 --------------------------------------------------------------------------------
23
24 XTENSA INITIALIZATION ROUTINES CODED IN C
25
26 This file contains miscellaneous Xtensa RTOS-generic initialization functions
27 that are implemented in C.
28
29 *******************************************************************************/
30
31
32 #ifdef XT_BOARD
33 #include "xtensa/xtbsp.h"
34 #endif
35
36 #include "xtensa_rtos.h"
37 #include "sdkconfig.h"
38 #if CONFIG_IDF_TARGET_ESP32
39 #include "esp32/clk.h"
40 #elif CONFIG_IDF_TARGET_ESP32S2
41 #include "esp32s2/clk.h"
42 #elif CONFIG_IDF_TARGET_ESP32S3
43 #include "esp32s3/clk.h"
44 #endif
45
46 #ifdef XT_RTOS_TIMER_INT
47
48 unsigned _xt_tick_divisor = 0; /* cached number of cycles per tick */
49
_xt_tick_divisor_init(void)50 void _xt_tick_divisor_init(void)
51 {
52 _xt_tick_divisor = esp_clk_cpu_freq() / XT_TICK_PER_SEC;
53 }
54
55 /* Deprecated, to be removed */
xt_clock_freq(void)56 int xt_clock_freq(void)
57 {
58 return esp_clk_cpu_freq();
59 }
60
61 #endif /* XT_RTOS_TIMER_INT */
62