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226 lines
8.8 KiB
C
226 lines
8.8 KiB
C
/*
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* FreeRTOS Kernel <DEVELOPMENT BRANCH>
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* Copyright (C) 2015-2019 Cadence Design Systems, Inc.
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* Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to
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* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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* the Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* *INDENT-ON* */
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#ifndef __ASSEMBLER__
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#include <stdint.h>
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#include <xtensa/tie/xt_core.h>
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#include <xtensa/hal.h>
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#include <xtensa/config/core.h>
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#include <xtensa/config/system.h> /* required for XSHAL_CLIB */
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#include <xtensa/xtruntime.h>
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/*#include "xtensa_context.h" */
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/*-----------------------------------------------------------
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* Port specific definitions.
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*
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* The settings in this file configure FreeRTOS correctly for the
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* given hardware and compiler.
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*
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* These settings should not be altered.
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*-----------------------------------------------------------
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*/
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/* Type definitions. */
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#define portCHAR int8_t
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#define portFLOAT float
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#define portDOUBLE double
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#define portLONG int32_t
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#define portSHORT int16_t
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#define portSTACK_TYPE uint32_t
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#define portBASE_TYPE int
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typedef portSTACK_TYPE StackType_t;
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typedef portBASE_TYPE BaseType_t;
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typedef unsigned portBASE_TYPE UBaseType_t;
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#if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
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typedef uint16_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffff
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#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
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typedef uint32_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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#else
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#error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
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#endif
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/*-----------------------------------------------------------*/
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/* portbenchmark */
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#include "portbenchmark.h"
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/* Critical section management. NW-TODO: replace XTOS_SET_INTLEVEL with more efficient version, if any? */
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/* These cannot be nested. They should be used with a lot of care and cannot be called from interrupt level. */
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#define portDISABLE_INTERRUPTS() do { XTOS_SET_INTLEVEL( XCHAL_EXCM_LEVEL ); portbenchmarkINTERRUPT_DISABLE(); } while( 0 )
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#define portENABLE_INTERRUPTS() do { portbenchmarkINTERRUPT_RESTORE( 0 ); XTOS_SET_INTLEVEL( 0 ); } while( 0 )
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/* These can be nested */
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#define portCRITICAL_NESTING_IN_TCB 1 /* For now, let FreeRTOS' (tasks.c) manage critical nesting */
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void vTaskEnterCritical( void );
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void vTaskExitCritical( void );
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#define portENTER_CRITICAL() vTaskEnterCritical()
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#define portEXIT_CRITICAL() vTaskExitCritical()
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/* Cleaner and preferred solution allows nested interrupts disabling and restoring via local registers or stack. */
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/* They can be called from interrupts too. */
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static inline unsigned portENTER_CRITICAL_NESTED()
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{
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unsigned state = XTOS_SET_INTLEVEL( XCHAL_EXCM_LEVEL );
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portbenchmarkINTERRUPT_DISABLE();
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return state;
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}
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#define portEXIT_CRITICAL_NESTED( state ) do { portbenchmarkINTERRUPT_RESTORE( state ); XTOS_RESTORE_JUST_INTLEVEL( state ); } while( 0 )
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/* These FreeRTOS versions are similar to the nested versions above */
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#define portSET_INTERRUPT_MASK_FROM_ISR() portENTER_CRITICAL_NESTED()
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#define portCLEAR_INTERRUPT_MASK_FROM_ISR( state ) portEXIT_CRITICAL_NESTED( state )
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/*-----------------------------------------------------------*/
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/* Architecture specifics. */
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#define portSTACK_GROWTH ( -1 )
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#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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#define portBYTE_ALIGNMENT 4
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#define portNOP() XT_NOP()
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/*-----------------------------------------------------------*/
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/* Fine resolution time */
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#define portGET_RUN_TIME_COUNTER_VALUE() xthal_get_ccount()
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/* Kernel utilities. */
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void vPortYield( void );
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void _frxt_setup_switch( void );
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#define portYIELD() vPortYield()
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#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) \
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if( ( xHigherPriorityTaskWoken ) != 0 ) { \
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_frxt_setup_switch(); \
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}
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/*-----------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. */
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#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
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#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
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/* When coprocessors are defined, we to maintain a pointer to coprocessors area. */
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/* We currently use a hack: redefine field xMPU_SETTINGS in TCB block as a structure that can hold: */
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/* MPU wrappers, coprocessor area pointer, trace code structure, and more if needed. */
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/* The field is normally used for memory protection. FreeRTOS should create another general purpose field. */
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typedef struct
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{
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#if XCHAL_CP_NUM > 0
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volatile StackType_t * coproc_area; /* Pointer to coprocessor save area; MUST BE FIRST */
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#endif
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#if portUSING_MPU_WRAPPERS
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/* Define here mpu_settings, which is port dependent */
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int mpu_setting; /* Just a dummy example here; MPU not ported to Xtensa yet */
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#endif
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#if configUSE_TRACE_FACILITY_2
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struct
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{
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/* Cf. porttraceStamp() */
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int taskstamp; /* Stamp from inside task to see where we are */
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int taskstampcount; /* A counter usually incremented when we restart the task's loop */
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} porttrace;
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#endif
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} xMPU_SETTINGS;
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/* Main hack to use MPU_wrappers even when no MPU is defined (warning: mpu_setting should not be accessed; otherwise move this above xMPU_SETTINGS) */
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#if ( XCHAL_CP_NUM > 0 || configUSE_TRACE_FACILITY_2 ) && !portUSING_MPU_WRAPPERS /* If MPU wrappers not used, we still need to allocate coproc area */
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#undef portUSING_MPU_WRAPPERS
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#define portUSING_MPU_WRAPPERS 1 /* Enable it to allocate coproc area */
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#define MPU_WRAPPERS_H /* Override mpu_wrapper.h to disable unwanted code */
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#define PRIVILEGED_FUNCTION
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#define PRIVILEGED_DATA
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#endif
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/* porttrace */
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#if configUSE_TRACE_FACILITY_2
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#include "porttrace.h"
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#endif
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/* configASSERT_2 if requested */
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#if configASSERT_2
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#include <stdio.h>
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void exit( int );
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#define configASSERT( x ) if( !( x ) ) { porttracePrint( -1 ); printf( "\nAssertion failed in %s:%d\n", __FILE__, __LINE__ ); exit( -1 ); }
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#endif
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/* C library support -- only XCLIB and NEWLIB are supported. */
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/* To enable thread-safe C library support, XT_USE_THREAD_SAFE_CLIB must be
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* defined to be > 0 somewhere above or on the command line. */
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#if ( XT_USE_THREAD_SAFE_CLIB > 0u ) && ( XSHAL_CLIB == XTHAL_CLIB_XCLIB )
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extern void vPortClibInit( void );
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#endif // XCLIB support
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#if ( XT_USE_THREAD_SAFE_CLIB > 0u ) && ( XSHAL_CLIB == XTHAL_CLIB_NEWLIB )
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extern void vPortClibInit( void );
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/* This C library cleanup is not currently done by FreeRTOS when deleting a task */
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#include <stdio.h>
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#define portCLEAN_UP_TCB( pxTCB ) vPortCleanUpTcbClib( &( ( pxTCB )->xNewLib_reent ) )
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static inline void vPortCleanUpTcbClib( struct _reent * ptr )
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{
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FILE * fp = &( ptr->__sf[ 0 ] );
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int i;
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for( i = 0; i < 3; ++i, ++fp )
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{
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fp->_close = NULL;
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}
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}
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#endif // NEWLIB support
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#endif // __ASSEMBLER__
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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}
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#endif
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/* *INDENT-ON* */
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#endif /* PORTMACRO_H */
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