2 * FreeRTOS Kernel V11.2.0
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
41 #include <intrinsics.h>
43 /*-----------------------------------------------------------
44 * Port specific definitions.
46 * The settings in this file configure FreeRTOS correctly for the given hardware
49 * These settings should not be altered.
50 *-----------------------------------------------------------
53 /* Type definitions. */
55 #define portFLOAT float
56 #define portDOUBLE double
58 #define portSHORT short
59 #define portSTACK_TYPE uint32_t
60 #define portBASE_TYPE long
62 typedef portSTACK_TYPE StackType_t;
63 typedef long BaseType_t;
64 typedef unsigned long UBaseType_t;
66 typedef uint32_t TickType_t;
67 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
69 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
70 * not need to be guarded with a critical section. */
71 #define portTICK_TYPE_IS_ATOMIC 1
73 /*-----------------------------------------------------------*/
75 /* Hardware specifics. */
76 #define portSTACK_GROWTH ( -1 )
77 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
78 #define portBYTE_ALIGNMENT 8
80 /*-----------------------------------------------------------*/
84 /* Called at the end of an ISR that can cause a context switch. */
85 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
87 extern uint32_t ulPortYieldRequired; \
89 if( xSwitchRequired != pdFALSE ) \
91 ulPortYieldRequired = pdTRUE; \
95 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
96 #define portYIELD() __asm( "SWI 0" );
99 /*-----------------------------------------------------------
100 * Critical section control
101 *----------------------------------------------------------*/
103 extern void vPortEnterCritical( void );
104 extern void vPortExitCritical( void );
105 extern uint32_t ulPortSetInterruptMask( void );
106 extern void vPortClearInterruptMask( uint32_t ulNewMaskValue );
108 /* These macros do not globally disable/enable interrupts. They do mask off
109 * interrupts that have a priority below configMAX_API_CALL_INTERRUPT_PRIORITY. */
110 #define portENTER_CRITICAL() vPortEnterCritical();
111 #define portEXIT_CRITICAL() vPortExitCritical();
112 #define portDISABLE_INTERRUPTS() ulPortSetInterruptMask()
113 #define portENABLE_INTERRUPTS() vPortClearInterruptMask( 0 )
114 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()
115 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vPortClearInterruptMask( x )
117 /*-----------------------------------------------------------*/
119 /* Task function macros as described on the FreeRTOS.org WEB site. These are
120 * not required for this port but included in case common demo code that uses these
122 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
123 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
125 /* Prototype of the FreeRTOS tick handler. This must be installed as the
126 * handler for whichever peripheral is used to generate the RTOS tick. */
127 void FreeRTOS_Tick_Handler( void );
129 /* Any task that uses the floating point unit MUST call vPortTaskUsesFPU()
130 * before any floating point instructions are executed. */
131 void vPortTaskUsesFPU( void );
132 #define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()
134 #define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL )
135 #define portLOWEST_USABLE_INTERRUPT_PRIORITY ( portLOWEST_INTERRUPT_PRIORITY - 1UL )
137 /* Architecture specific optimisations. */
138 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
139 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
142 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
144 /* Store/clear the ready priorities in a bit map. */
145 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
146 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
148 /*-----------------------------------------------------------*/
150 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31 - __CLZ( uxReadyPriorities ) )
152 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
154 #if ( configASSERT_DEFINED == 1 )
155 void vPortValidateInterruptPriority( void );
156 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
157 #endif /* configASSERT */
159 #define portNOP() __asm volatile ( "NOP" )
161 /* Suppress warnings that are generated by the IAR tools, but cannot be
162 * fixed in the source code because to do so would cause other compilers to
163 * generate warnings. */
164 #pragma diag_suppress=Pe191
165 #pragma diag_suppress=Pa082
167 #endif /* __ICCARM__ */
170 /* The number of bits to shift for an interrupt priority is dependent on the
171 * number of bits implemented by the interrupt controller. */
172 #if configUNIQUE_INTERRUPT_PRIORITIES == 16
173 #define portPRIORITY_SHIFT 4
174 #define portMAX_BINARY_POINT_VALUE 3
175 #elif configUNIQUE_INTERRUPT_PRIORITIES == 32
176 #define portPRIORITY_SHIFT 3
177 #define portMAX_BINARY_POINT_VALUE 2
178 #elif configUNIQUE_INTERRUPT_PRIORITIES == 64
179 #define portPRIORITY_SHIFT 2
180 #define portMAX_BINARY_POINT_VALUE 1
181 #elif configUNIQUE_INTERRUPT_PRIORITIES == 128
182 #define portPRIORITY_SHIFT 1
183 #define portMAX_BINARY_POINT_VALUE 0
184 #elif configUNIQUE_INTERRUPT_PRIORITIES == 256
185 #define portPRIORITY_SHIFT 0
186 #define portMAX_BINARY_POINT_VALUE 0
187 #else /* if configUNIQUE_INTERRUPT_PRIORITIES == 16 */
188 #error Invalid configUNIQUE_INTERRUPT_PRIORITIES setting. configUNIQUE_INTERRUPT_PRIORITIES must be set to the number of unique priorities implemented by the target hardware
189 #endif /* if configUNIQUE_INTERRUPT_PRIORITIES == 16 */
191 /* Interrupt controller access addresses. */
192 #define portICCPMR_PRIORITY_MASK_OFFSET ( 0x04 )
193 #define portICCIAR_INTERRUPT_ACKNOWLEDGE_OFFSET ( 0x0C )
194 #define portICCEOIR_END_OF_INTERRUPT_OFFSET ( 0x10 )
195 #define portICCBPR_BINARY_POINT_OFFSET ( 0x08 )
196 #define portICCRPR_RUNNING_PRIORITY_OFFSET ( 0x14 )
198 #define portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS ( configINTERRUPT_CONTROLLER_BASE_ADDRESS + configINTERRUPT_CONTROLLER_CPU_INTERFACE_OFFSET )
199 #define portICCPMR_PRIORITY_MASK_REGISTER ( *( ( volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCPMR_PRIORITY_MASK_OFFSET ) ) )
200 #define portICCIAR_INTERRUPT_ACKNOWLEDGE_REGISTER_ADDRESS ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCIAR_INTERRUPT_ACKNOWLEDGE_OFFSET )
201 #define portICCEOIR_END_OF_INTERRUPT_REGISTER_ADDRESS ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCEOIR_END_OF_INTERRUPT_OFFSET )
202 #define portICCPMR_PRIORITY_MASK_REGISTER_ADDRESS ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCPMR_PRIORITY_MASK_OFFSET )
203 #define portICCBPR_BINARY_POINT_REGISTER ( *( ( const volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCBPR_BINARY_POINT_OFFSET ) ) )
204 #define portICCRPR_RUNNING_PRIORITY_REGISTER ( *( ( const volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCRPR_RUNNING_PRIORITY_OFFSET ) ) )
212 #endif /* PORTMACRO_H */