| /* |
| * FreeRTOS Kernel <DEVELOPMENT BRANCH> |
| * 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 |
| |
| #include "intrinsics.h" |
| |
| /* *INDENT-OFF* */ |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| /* *INDENT-ON* */ |
| |
| /*----------------------------------------------------------- |
| * 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. */ |
| #if __riscv_xlen == 64 |
| #define portSTACK_TYPE uint64_t |
| #define portBASE_TYPE int64_t |
| #define portUBASE_TYPE uint64_t |
| #define portMAX_DELAY ( TickType_t ) 0xffffffffffffffffUL |
| #define portPOINTER_SIZE_TYPE uint64_t |
| #elif __riscv_xlen == 32 |
| #define portSTACK_TYPE uint32_t |
| #define portBASE_TYPE int32_t |
| #define portUBASE_TYPE uint32_t |
| #define portMAX_DELAY ( TickType_t ) 0xffffffffUL |
| #else /* if __riscv_xlen == 64 */ |
| #error "Assembler did not define __riscv_xlen" |
| #endif /* if __riscv_xlen == 64 */ |
| |
| typedef portSTACK_TYPE StackType_t; |
| typedef portBASE_TYPE BaseType_t; |
| typedef portUBASE_TYPE UBaseType_t; |
| typedef portUBASE_TYPE TickType_t; |
| |
| /* Legacy type definitions. */ |
| #define portCHAR char |
| #define portFLOAT float |
| #define portDOUBLE double |
| #define portLONG long |
| #define portSHORT short |
| |
| /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do |
| * not need to be guarded with a critical section. */ |
| #define portTICK_TYPE_IS_ATOMIC 1 |
| /*-----------------------------------------------------------*/ |
| |
| /* Architecture specifics. */ |
| #define portSTACK_GROWTH ( -1 ) |
| #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ ) |
| #ifdef __riscv_32e |
| #define portBYTE_ALIGNMENT 8 /* RV32E uses RISC-V EABI with reduced stack alignment requirements. */ |
| #else |
| #define portBYTE_ALIGNMENT 16 |
| #endif |
| /*-----------------------------------------------------------*/ |
| |
| /* Scheduler utilities. */ |
| extern void vTaskSwitchContext( void ); |
| #define portYIELD() __asm volatile ( "ecall" ); |
| #define portEND_SWITCHING_ISR( xSwitchRequired ) \ |
| do \ |
| { \ |
| if( xSwitchRequired != pdFALSE ) \ |
| { \ |
| traceISR_EXIT_TO_SCHEDULER(); \ |
| vTaskSwitchContext(); \ |
| } \ |
| else \ |
| { \ |
| traceISR_EXIT(); \ |
| } \ |
| } while( 0 ) |
| #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x ) |
| /*-----------------------------------------------------------*/ |
| |
| /* Critical section management. */ |
| #define portCRITICAL_NESTING_IN_TCB 0 |
| |
| #define portDISABLE_INTERRUPTS() __disable_interrupt() |
| #define portENABLE_INTERRUPTS() __enable_interrupt() |
| |
| extern size_t xCriticalNesting; |
| #define portENTER_CRITICAL() \ |
| { \ |
| portDISABLE_INTERRUPTS(); \ |
| xCriticalNesting++; \ |
| } |
| |
| #define portEXIT_CRITICAL() \ |
| { \ |
| xCriticalNesting--; \ |
| if( xCriticalNesting == 0 ) \ |
| { \ |
| portENABLE_INTERRUPTS(); \ |
| } \ |
| } |
| |
| /*-----------------------------------------------------------*/ |
| |
| /* Architecture specific optimisations. */ |
| #if ( configUSE_PORT_OPTIMISED_TASK_SELECTION == 1 ) |
| |
| #error "configUSE_PORT_OPTIMISED_TASK_SELECTION cannot yet be used in the IAR RISC-V port, the CLZ instruction needs to be emulated." |
| |
| #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */ |
| |
| |
| /*-----------------------------------------------------------*/ |
| |
| /* Task function macros as described on the FreeRTOS.org WEB site. These are |
| * not necessary for to use this port. They are defined so the common demo |
| * files (which build with all the ports) will build. */ |
| #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters ) |
| #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters ) |
| |
| /*-----------------------------------------------------------*/ |
| |
| #define portNOP() __asm volatile ( " nop " ) |
| #define portINLINE __inline |
| |
| #ifndef portFORCE_INLINE |
| #define portFORCE_INLINE inline __attribute__( ( always_inline ) ) |
| #endif |
| |
| #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" ) |
| /*-----------------------------------------------------------*/ |
| |
| /* Suppress warnings that are generated by the IAR tools, but cannot be fixed in |
| * the source code because to do so would cause other compilers to generate |
| * warnings. */ |
| #pragma diag_suppress=Pa082 |
| |
| /* configCLINT_BASE_ADDRESS is a legacy definition that was replaced by the |
| * configMTIME_BASE_ADDRESS and configMTIMECMP_BASE_ADDRESS definitions. For |
| * backward compatibility derive the newer definitions from the old if the old |
| * definition is found. */ |
| #if defined( configCLINT_BASE_ADDRESS ) && !defined( configMTIME_BASE_ADDRESS ) && ( configCLINT_BASE_ADDRESS == 0 ) |
| |
| /* Legacy case where configCLINT_BASE_ADDRESS was defined as 0 to indicate |
| * there was no CLINT. Equivalent now is to set the MTIME and MTIMECMP |
| * addresses to 0. */ |
| #define configMTIME_BASE_ADDRESS ( 0 ) |
| #define configMTIMECMP_BASE_ADDRESS ( 0 ) |
| #elif defined( configCLINT_BASE_ADDRESS ) && !defined( configMTIME_BASE_ADDRESS ) |
| |
| /* Legacy case where configCLINT_BASE_ADDRESS was set to the base address of |
| * the CLINT. Equivalent now is to derive the MTIME and MTIMECMP addresses |
| * from the CLINT address. */ |
| #define configMTIME_BASE_ADDRESS ( ( configCLINT_BASE_ADDRESS ) + 0xBFF8UL ) |
| #define configMTIMECMP_BASE_ADDRESS ( ( configCLINT_BASE_ADDRESS ) + 0x4000UL ) |
| #elif !defined( configMTIME_BASE_ADDRESS ) || !defined( configMTIMECMP_BASE_ADDRESS ) |
| #error "configMTIME_BASE_ADDRESS and configMTIMECMP_BASE_ADDRESS must be defined in FreeRTOSConfig.h. Set them to zero if there is no MTIME (machine time) clock. See www.FreeRTOS.org/Using-FreeRTOS-on-RISC-V.html" |
| #endif /* if defined( configCLINT_BASE_ADDRESS ) && !defined( configMTIME_BASE_ADDRESS ) && ( configCLINT_BASE_ADDRESS == 0 ) */ |
| |
| /* *INDENT-OFF* */ |
| #ifdef __cplusplus |
| } |
| #endif |
| /* *INDENT-ON* */ |
| |
| #endif /* PORTMACRO_H */ |
