231 lines
8.8 KiB
C
231 lines
8.8 KiB
C
/*
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* FreeRTOS Kernel V10.3.1
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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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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* http://www.FreeRTOS.org
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* http://aws.amazon.com/freertos
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*
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* 1 tab == 4 spaces!
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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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 char
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#define portFLOAT float
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#define portDOUBLE double
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#define portLONG long
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#define portSHORT short
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#define portSTACK_TYPE uint32_t
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#define portBASE_TYPE long
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typedef portSTACK_TYPE StackType_t;
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typedef long BaseType_t;
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typedef unsigned long UBaseType_t;
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#if (configUSE_16_BIT_TICKS == 1)
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typedef uint16_t TickType_t;
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#define portMAX_DELAY (TickType_t)0xffff
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#else
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typedef uint32_t TickType_t;
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#define portMAX_DELAY (TickType_t)0xffffffffUL
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/* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
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not need to be guarded with a critical section. */
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#define portTICK_TYPE_IS_ATOMIC 1
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#endif
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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 8
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/*-----------------------------------------------------------*/
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/* Scheduler utilities. */
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#define portYIELD() \
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{ \
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/* Set a PendSV to request a context switch. */ \
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portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; \
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\
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/* Barriers are normally not required but do ensure the code is completely \
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within the specified behaviour for the architecture. */ \
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__asm volatile("dsb" ::: "memory"); \
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__asm volatile("isb"); \
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}
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#define portNVIC_INT_CTRL_REG (*((volatile uint32_t *)0xe000ed04))
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#define portNVIC_PENDSVSET_BIT (1UL << 28UL)
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#define portEND_SWITCHING_ISR(xSwitchRequired) \
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if (xSwitchRequired != pdFALSE) \
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portYIELD()
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#define portYIELD_FROM_ISR(x) portEND_SWITCHING_ISR(x)
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/*-----------------------------------------------------------*/
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/* Critical section management. */
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extern void vPortEnterCritical(void);
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extern void vPortExitCritical(void);
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#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortRaiseBASEPRI()
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#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) vPortSetBASEPRI(x)
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#define portDISABLE_INTERRUPTS() vPortRaiseBASEPRI()
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#define portENABLE_INTERRUPTS() vPortSetBASEPRI(0)
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#define portENTER_CRITICAL() vPortEnterCritical()
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#define portEXIT_CRITICAL() vPortExitCritical()
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/*-----------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. These are
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not necessary for to use this port. They are defined so the common demo files
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(which build with all the ports) will build. */
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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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/*-----------------------------------------------------------*/
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/* Tickless idle/low power functionality. */
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#ifndef portSUPPRESS_TICKS_AND_SLEEP
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extern void vPortSuppressTicksAndSleep(TickType_t xExpectedIdleTime);
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#define portSUPPRESS_TICKS_AND_SLEEP(xExpectedIdleTime) vPortSuppressTicksAndSleep(xExpectedIdleTime)
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#endif
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/*-----------------------------------------------------------*/
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/* Architecture specific optimisations. */
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#ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
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#define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
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#endif
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#if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
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/* Generic helper function. */
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__attribute__((always_inline)) static inline uint8_t ucPortCountLeadingZeros(uint32_t ulBitmap) {
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uint8_t ucReturn;
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__asm volatile("clz %0, %1" : "=r"(ucReturn) : "r"(ulBitmap) : "memory");
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return ucReturn;
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}
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/* Check the configuration. */
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#if (configMAX_PRIORITIES > 32)
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#error configUSE_PORT_OPTIMISED_TASK_SELECTION can only be set to 1 when configMAX_PRIORITIES is less than or equal to 32. It is very rare that a system requires more than 10 to 15 difference priorities as tasks that share a priority will time slice.
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#endif
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/* Store/clear the ready priorities in a bit map. */
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#define portRECORD_READY_PRIORITY(uxPriority, uxReadyPriorities) (uxReadyPriorities) |= (1UL << (uxPriority))
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#define portRESET_READY_PRIORITY(uxPriority, uxReadyPriorities) (uxReadyPriorities) &= ~(1UL << (uxPriority))
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/*-----------------------------------------------------------*/
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#define portGET_HIGHEST_PRIORITY(uxTopPriority, uxReadyPriorities) uxTopPriority = (31UL - (uint32_t)ucPortCountLeadingZeros((uxReadyPriorities)))
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#endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
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/*-----------------------------------------------------------*/
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#ifdef configASSERT
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void vPortValidateInterruptPriority(void);
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#define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
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#endif
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/* portNOP() is not required by this port. */
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#define portNOP()
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#define portINLINE __inline
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#ifndef portFORCE_INLINE
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#define portFORCE_INLINE inline __attribute__((always_inline))
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#endif
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/*-----------------------------------------------------------*/
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portFORCE_INLINE static BaseType_t xPortIsInsideInterrupt(void) {
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uint32_t ulCurrentInterrupt;
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BaseType_t xReturn;
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/* Obtain the number of the currently executing interrupt. */
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__asm volatile("mrs %0, ipsr" : "=r"(ulCurrentInterrupt)::"memory");
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if (ulCurrentInterrupt == 0) {
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xReturn = pdFALSE;
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} else {
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xReturn = pdTRUE;
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}
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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portFORCE_INLINE static void vPortRaiseBASEPRI(void) {
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uint32_t ulNewBASEPRI;
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__asm volatile(" mov %0, %1 \n"
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" msr basepri, %0 \n"
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" isb \n"
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" dsb \n"
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: "=r"(ulNewBASEPRI)
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: "i"(configMAX_SYSCALL_INTERRUPT_PRIORITY)
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: "memory");
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}
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/*-----------------------------------------------------------*/
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portFORCE_INLINE static uint32_t ulPortRaiseBASEPRI(void) {
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uint32_t ulOriginalBASEPRI, ulNewBASEPRI;
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__asm volatile(" mrs %0, basepri \n"
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" mov %1, %2 \n"
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" msr basepri, %1 \n"
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" isb \n"
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" dsb \n"
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: "=r"(ulOriginalBASEPRI), "=r"(ulNewBASEPRI)
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: "i"(configMAX_SYSCALL_INTERRUPT_PRIORITY)
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: "memory");
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/* This return will not be reached but is necessary to prevent compiler
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warnings. */
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return ulOriginalBASEPRI;
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}
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/*-----------------------------------------------------------*/
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portFORCE_INLINE static void vPortSetBASEPRI(uint32_t ulNewMaskValue) { __asm volatile(" msr basepri, %0 " ::"r"(ulNewMaskValue) : "memory"); }
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/*-----------------------------------------------------------*/
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#define portMEMORY_BARRIER() __asm volatile("" ::: "memory")
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#ifdef __cplusplus
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}
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#endif
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#endif /* PORTMACRO_H */
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