2 * FreeRTOS Kernel <DEVELOPMENT BRANCH>
3 * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
5 * SPDX-License-Identifier: MIT
7 * Permission is hereby granted, free of charge, to any person obtaining a copy of
8 * this software and associated documentation files (the "Software"), to deal in
9 * the Software without restriction, including without limitation the rights to
10 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
11 * the Software, and to permit persons to whom the Software is furnished to do so,
12 * subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included in all
15 * copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
19 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
20 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
21 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 * https://www.FreeRTOS.org
25 * https://github.com/FreeRTOS
39 /*-----------------------------------------------------------
40 * Port specific definitions.
42 * The settings in this file configure FreeRTOS correctly for the
43 * given hardware and compiler.
45 * These settings should not be altered.
46 *-----------------------------------------------------------
50 #include <intrinsics.h>
52 /* Type definitions. */
54 #define portFLOAT float
55 #define portDOUBLE double
57 #define portSHORT short
58 #define portSTACK_TYPE uint32_t
59 #define portBASE_TYPE long
61 typedef portSTACK_TYPE StackType_t;
62 typedef long BaseType_t;
63 typedef unsigned long UBaseType_t;
65 #if ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS )
66 typedef uint16_t TickType_t;
67 #define portMAX_DELAY ( TickType_t ) 0xffff
68 #elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
69 typedef uint32_t TickType_t;
70 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
72 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
73 * not need to be guarded with a critical section. */
74 #define portTICK_TYPE_IS_ATOMIC 1
76 #error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
78 /*-----------------------------------------------------------*/
80 /* Architecture specifics. */
81 #define portSTACK_GROWTH ( -1 )
82 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
83 #define portBYTE_ALIGNMENT 8
84 /*-----------------------------------------------------------*/
86 /* Compiler directives. */
87 #define portWEAK_SYMBOL __attribute__( ( weak ) )
89 /*-----------------------------------------------------------*/
92 /* Scheduler utilities. */
95 /* Set a PendSV to request a context switch. */ \
96 portNVIC_INT_CTRL_REG = portNVIC_PENDSVSET_BIT; \
101 #define portNVIC_INT_CTRL_REG ( *( ( volatile uint32_t * ) 0xe000ed04 ) )
102 #define portNVIC_PENDSVSET_BIT ( 1UL << 28UL )
103 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
106 if( xSwitchRequired != pdFALSE ) \
108 traceISR_EXIT_TO_SCHEDULER(); \
116 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
118 /*-----------------------------------------------------------*/
120 /* Architecture specific optimisations. */
121 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
122 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
125 #if ( configUSE_PORT_OPTIMISED_TASK_SELECTION == 1 )
127 /* Check the configuration. */
128 #if ( configMAX_PRIORITIES > 32 )
129 #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.
132 /* Store/clear the ready priorities in a bit map. */
133 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
134 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
136 /*-----------------------------------------------------------*/
138 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( ( uint32_t ) __CLZ( ( uxReadyPriorities ) ) ) )
140 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
141 /*-----------------------------------------------------------*/
143 /* Critical section management. */
144 extern void vPortEnterCritical( void );
145 extern void vPortExitCritical( void );
147 #define portDISABLE_INTERRUPTS() \
149 __set_BASEPRI( configMAX_SYSCALL_INTERRUPT_PRIORITY ); \
154 #define portENABLE_INTERRUPTS() __set_BASEPRI( 0 )
155 #define portENTER_CRITICAL() vPortEnterCritical()
156 #define portEXIT_CRITICAL() vPortExitCritical()
157 #define portSET_INTERRUPT_MASK_FROM_ISR() __get_BASEPRI(); portDISABLE_INTERRUPTS()
158 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) __set_BASEPRI( x )
159 /*-----------------------------------------------------------*/
161 /* Tickless idle/low power functionality. */
162 #ifndef portSUPPRESS_TICKS_AND_SLEEP
163 extern void vPortSuppressTicksAndSleep( TickType_t xExpectedIdleTime );
164 #define portSUPPRESS_TICKS_AND_SLEEP( xExpectedIdleTime ) vPortSuppressTicksAndSleep( xExpectedIdleTime )
167 /*-----------------------------------------------------------*/
169 /* Task function macros as described on the FreeRTOS.org WEB site. These are
170 * not necessary for to use this port. They are defined so the common demo files
171 * (which build with all the ports) will build. */
172 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
173 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
174 /*-----------------------------------------------------------*/
176 #if ( configASSERT_DEFINED == 1 )
177 void vPortValidateInterruptPriority( void );
178 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
181 /* portNOP() is not required by this port. */
184 #define portINLINE __inline
186 #ifndef portFORCE_INLINE
187 #define portFORCE_INLINE inline __attribute__( ( always_inline ) )
190 /*-----------------------------------------------------------*/
192 portFORCE_INLINE static BaseType_t xPortIsInsideInterrupt( void )
194 uint32_t ulCurrentInterrupt;
197 /* Obtain the number of the currently executing interrupt. */
198 __asm volatile ( "mrs %0, ipsr" : "=r" ( ulCurrentInterrupt )::"memory" );
200 if( ulCurrentInterrupt == 0 )
212 /*-----------------------------------------------------------*/
214 /* Suppress warnings that are generated by the IAR tools, but cannot be fixed in
215 * the source code because to do so would cause other compilers to generate
217 #pragma diag_suppress=Pe191
218 #pragma diag_suppress=Pa082
226 #endif /* PORTMACRO_H */