esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/xtensa_init.c

63 wiersze
1.9 KiB
C

/*
* SPDX-FileCopyrightText: 2015-2019 Cadence Design Systems, Inc.
*
* SPDX-License-Identifier: MIT
*
* SPDX-FileContributor: 2016-2022 Espressif Systems (Shanghai) CO LTD
*/
/*
* Copyright (c) 2015-2019 Cadence Design Systems, Inc.
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* XTENSA INITIALIZATION ROUTINES CODED IN C
*
* This file contains miscellaneous Xtensa RTOS-generic initialization functions
* that are implemented in C.
*/
#ifdef XT_BOARD
#include "xtensa/xtbsp.h"
#endif
#include "xtensa_rtos.h"
#include "sdkconfig.h"
#include "esp_private/esp_clk.h"
#ifdef XT_RTOS_TIMER_INT
unsigned _xt_tick_divisor = 0; /* cached number of cycles per tick */
void _xt_tick_divisor_init(void)
{
_xt_tick_divisor = esp_clk_cpu_freq() / XT_TICK_PER_SEC;
}
/* Deprecated, to be removed */
int xt_clock_freq(void)
{
return esp_clk_cpu_freq();
}
#endif /* XT_RTOS_TIMER_INT */