| /* |
| * FreeRTOS Kernel <DEVELOPMENT BRANCH> |
| * Copyright (C) 2015-2019 Cadence Design Systems, Inc. |
| * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved. |
| * |
| * SPDX-License-Identifier: MIT |
| * |
| * 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. |
| * |
| * https://www.FreeRTOS.org |
| * https://github.com/FreeRTOS |
| * |
| */ |
| |
| #ifndef PORTMACRO_H |
| #define PORTMACRO_H |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef __ASSEMBLER__ |
| |
| #include <stdint.h> |
| |
| #include <xtensa/tie/xt_core.h> |
| #include <xtensa/hal.h> |
| #include <xtensa/config/core.h> |
| #include <xtensa/config/system.h> /* required for XSHAL_CLIB */ |
| #include <xtensa/xtruntime.h> |
| |
| //#include "xtensa_context.h" |
| |
| /*----------------------------------------------------------- |
| * Port specific definitions. |
| * |
| * The settings in this file configure FreeRTOS correctly for the |
| * given hardware and compiler. |
| * |
| * These settings should not be altered. |
| *----------------------------------------------------------- |
| */ |
| |
| /* Type definitions. */ |
| |
| #define portCHAR int8_t |
| #define portFLOAT float |
| #define portDOUBLE double |
| #define portLONG int32_t |
| #define portSHORT int16_t |
| #define portSTACK_TYPE uint32_t |
| #define portBASE_TYPE int |
| |
| typedef portSTACK_TYPE StackType_t; |
| typedef portBASE_TYPE BaseType_t; |
| typedef unsigned portBASE_TYPE UBaseType_t; |
| |
| #if( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS ) |
| typedef uint16_t TickType_t; |
| #define portMAX_DELAY ( TickType_t ) 0xffff |
| #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS ) |
| typedef uint32_t TickType_t; |
| #define portMAX_DELAY ( TickType_t ) 0xffffffffUL |
| #else |
| #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width. |
| #endif |
| /*-----------------------------------------------------------*/ |
| |
| // portbenchmark |
| #include "portbenchmark.h" |
| |
| /* Critical section management. NW-TODO: replace XTOS_SET_INTLEVEL with more efficient version, if any? */ |
| // These cannot be nested. They should be used with a lot of care and cannot be called from interrupt level. |
| #define portDISABLE_INTERRUPTS() do { XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL); portbenchmarkINTERRUPT_DISABLE(); } while (0) |
| #define portENABLE_INTERRUPTS() do { portbenchmarkINTERRUPT_RESTORE(0); XTOS_SET_INTLEVEL(0); } while (0) |
| |
| // These can be nested |
| #define portCRITICAL_NESTING_IN_TCB 1 // For now, let FreeRTOS' (tasks.c) manage critical nesting |
| void vTaskEnterCritical(void); |
| void vTaskExitCritical(void); |
| #define portENTER_CRITICAL() vTaskEnterCritical() |
| #define portEXIT_CRITICAL() vTaskExitCritical() |
| |
| // Cleaner and preferred solution allows nested interrupts disabling and restoring via local registers or stack. |
| // They can be called from interrupts too. |
| static inline unsigned portENTER_CRITICAL_NESTED() { unsigned state = XTOS_SET_INTLEVEL(XCHAL_EXCM_LEVEL); portbenchmarkINTERRUPT_DISABLE(); return state; } |
| #define portEXIT_CRITICAL_NESTED(state) do { portbenchmarkINTERRUPT_RESTORE(state); XTOS_RESTORE_JUST_INTLEVEL(state); } while (0) |
| |
| // These FreeRTOS versions are similar to the nested versions above |
| #define portSET_INTERRUPT_MASK_FROM_ISR() portENTER_CRITICAL_NESTED() |
| #define portCLEAR_INTERRUPT_MASK_FROM_ISR(state) portEXIT_CRITICAL_NESTED(state) |
| |
| /*-----------------------------------------------------------*/ |
| |
| /* Architecture specifics. */ |
| #define portSTACK_GROWTH ( -1 ) |
| #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) |
| #define portBYTE_ALIGNMENT 4 |
| #define portNOP() XT_NOP() |
| /*-----------------------------------------------------------*/ |
| |
| /* Fine resolution time */ |
| #define portGET_RUN_TIME_COUNTER_VALUE() xthal_get_ccount() |
| |
| /* Kernel utilities. */ |
| void vPortYield( void ); |
| void _frxt_setup_switch( void ); |
| #define portYIELD() vPortYield() |
| #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) \ |
| if ( ( xHigherPriorityTaskWoken ) != 0 ) { \ |
| _frxt_setup_switch(); \ |
| } |
| |
| /*-----------------------------------------------------------*/ |
| |
| /* Task function macros as described on the FreeRTOS.org WEB site. */ |
| #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) |
| #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters ) |
| |
| // When coprocessors are defined, we to maintain a pointer to coprocessors area. |
| // We currently use a hack: redefine field xMPU_SETTINGS in TCB block as a structure that can hold: |
| // MPU wrappers, coprocessor area pointer, trace code structure, and more if needed. |
| // The field is normally used for memory protection. FreeRTOS should create another general purpose field. |
| typedef struct { |
| #if XCHAL_CP_NUM > 0 |
| volatile StackType_t* coproc_area; // Pointer to coprocessor save area; MUST BE FIRST |
| #endif |
| |
| #if portUSING_MPU_WRAPPERS |
| // Define here mpu_settings, which is port dependent |
| int mpu_setting; // Just a dummy example here; MPU not ported to Xtensa yet |
| #endif |
| |
| #if configUSE_TRACE_FACILITY_2 |
| struct { |
| // Cf. porttraceStamp() |
| int taskstamp; /* Stamp from inside task to see where we are */ |
| int taskstampcount; /* A counter usually incremented when we restart the task's loop */ |
| } porttrace; |
| #endif |
| } xMPU_SETTINGS; |
| |
| // 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) |
| #if (XCHAL_CP_NUM > 0 || configUSE_TRACE_FACILITY_2) && !portUSING_MPU_WRAPPERS // If MPU wrappers not used, we still need to allocate coproc area |
| #undef portUSING_MPU_WRAPPERS |
| #define portUSING_MPU_WRAPPERS 1 // Enable it to allocate coproc area |
| #define MPU_WRAPPERS_H // Override mpu_wrapper.h to disable unwanted code |
| #define PRIVILEGED_FUNCTION |
| #define PRIVILEGED_DATA |
| #endif |
| |
| // porttrace |
| #if configUSE_TRACE_FACILITY_2 |
| #include "porttrace.h" |
| #endif |
| |
| // configASSERT_2 if requested |
| #if configASSERT_2 |
| #include <stdio.h> |
| void exit(int); |
| #define configASSERT( x ) if (!(x)) { porttracePrint(-1); printf("\nAssertion failed in %s:%d\n", __FILE__, __LINE__); exit(-1); } |
| #endif |
| |
| |
| /* C library support -- only XCLIB and NEWLIB are supported. */ |
| |
| /* To enable thread-safe C library support, XT_USE_THREAD_SAFE_CLIB must be |
| defined to be > 0 somewhere above or on the command line. */ |
| |
| #if (XT_USE_THREAD_SAFE_CLIB > 0u) && (XSHAL_CLIB == XTHAL_CLIB_XCLIB) |
| extern void vPortClibInit(void); |
| #endif // XCLIB support |
| |
| #if (XT_USE_THREAD_SAFE_CLIB > 0u) && (XSHAL_CLIB == XTHAL_CLIB_NEWLIB) |
| extern void vPortClibInit(void); |
| |
| // This C library cleanup is not currently done by FreeRTOS when deleting a task |
| #include <stdio.h> |
| #define portCLEAN_UP_TCB(pxTCB) vPortCleanUpTcbClib(&((pxTCB)->xNewLib_reent)) |
| static inline void vPortCleanUpTcbClib(struct _reent *ptr) |
| { |
| FILE * fp = &(ptr->__sf[0]); |
| int i; |
| for (i = 0; i < 3; ++i, ++fp) { |
| fp->_close = NULL; |
| } |
| } |
| #endif // NEWLIB support |
| |
| #endif // __ASSEMBLER__ |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* PORTMACRO_H */ |