2 * FreeRTOS Kernel V10.3.1
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3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
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6 * this software and associated documentation files (the "Software"), to deal in
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7 * the Software without restriction, including without limitation the rights to
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8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
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9 * the Software, and to permit persons to whom the Software is furnished to do so,
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10 * subject to the following conditions:
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12 * The above copyright notice and this permission notice shall be included in all
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13 * copies or substantial portions of the Software.
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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22 * http://www.FreeRTOS.org
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23 * http://aws.amazon.com/freertos
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25 * 1 tab == 4 spaces!
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35 /*-----------------------------------------------------------
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36 * Port specific definitions.
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38 * The settings in this file configure FreeRTOS correctly for the given hardware
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41 * These settings should not be altered.
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42 *-----------------------------------------------------------
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45 /* Type definitions. */
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46 #define portCHAR char
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47 #define portFLOAT float
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48 #define portDOUBLE double
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49 #define portLONG long
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50 #define portSHORT short
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51 #define portSTACK_TYPE uint32_t
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52 #define portBASE_TYPE long
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54 typedef portSTACK_TYPE StackType_t;
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55 typedef long BaseType_t;
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56 typedef unsigned long UBaseType_t;
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58 typedef uint32_t TickType_t;
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59 #define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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61 /* 32-bit tick type on a 32-bit architecture, so reads of the tick count do
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62 * not need to be guarded with a critical section. */
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63 #define portTICK_TYPE_IS_ATOMIC 1
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65 /*-----------------------------------------------------------*/
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67 /* Hardware specifics. */
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68 #define portSTACK_GROWTH ( -1 )
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69 #define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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70 #define portBYTE_ALIGNMENT 8
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72 /*-----------------------------------------------------------*/
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74 /* Task utilities. */
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76 /* Called at the end of an ISR that can cause a context switch. */
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77 #define portEND_SWITCHING_ISR( xSwitchRequired ) \
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79 extern uint32_t ulPortYieldRequired; \
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81 if( xSwitchRequired != pdFALSE ) \
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83 ulPortYieldRequired = pdTRUE; \
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87 #define portYIELD_FROM_ISR( x ) portEND_SWITCHING_ISR( x )
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88 #define portYIELD() __asm volatile ( "SWI 0" ::: "memory" );
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91 /*-----------------------------------------------------------
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92 * Critical section control
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93 *----------------------------------------------------------*/
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95 extern void vPortEnterCritical( void );
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96 extern void vPortExitCritical( void );
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97 extern uint32_t ulPortSetInterruptMask( void );
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98 extern void vPortClearInterruptMask( uint32_t ulNewMaskValue );
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99 extern void vPortInstallFreeRTOSVectorTable( void );
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101 /* These macros do not globally disable/enable interrupts. They do mask off
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102 * interrupts that have a priority below configMAX_API_CALL_INTERRUPT_PRIORITY. */
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103 #define portENTER_CRITICAL() vPortEnterCritical();
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104 #define portEXIT_CRITICAL() vPortExitCritical();
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105 #define portDISABLE_INTERRUPTS() ulPortSetInterruptMask()
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106 #define portENABLE_INTERRUPTS() vPortClearInterruptMask( 0 )
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107 #define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetInterruptMask()
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108 #define portCLEAR_INTERRUPT_MASK_FROM_ISR( x ) vPortClearInterruptMask( x )
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110 /*-----------------------------------------------------------*/
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112 /* Task function macros as described on the FreeRTOS.org WEB site. These are
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113 * not required for this port but included in case common demo code that uses these
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114 * macros is used. */
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115 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void * pvParameters )
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116 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void * pvParameters )
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118 /* Prototype of the FreeRTOS tick handler. This must be installed as the
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119 * handler for whichever peripheral is used to generate the RTOS tick. */
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120 void FreeRTOS_Tick_Handler( void );
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122 /* If configUSE_TASK_FPU_SUPPORT is set to 1 (or left undefined) then tasks are
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123 * created without an FPU context and must call vPortTaskUsesFPU() to give
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124 * themselves an FPU context before using any FPU instructions. If
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125 * configUSE_TASK_FPU_SUPPORT is set to 2 then all tasks will have an FPU context
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127 #if ( configUSE_TASK_FPU_SUPPORT != 2 )
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128 void vPortTaskUsesFPU( void );
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131 /* Each task has an FPU context already, so define this function away to
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132 * nothing to prevent it being called accidentally. */
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133 #define vPortTaskUsesFPU()
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135 #define portTASK_USES_FLOATING_POINT() vPortTaskUsesFPU()
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137 #define portLOWEST_INTERRUPT_PRIORITY ( ( ( uint32_t ) configUNIQUE_INTERRUPT_PRIORITIES ) - 1UL )
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138 #define portLOWEST_USABLE_INTERRUPT_PRIORITY ( portLOWEST_INTERRUPT_PRIORITY - 1UL )
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140 /* Architecture specific optimisations. */
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141 #ifndef configUSE_PORT_OPTIMISED_TASK_SELECTION
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142 #define configUSE_PORT_OPTIMISED_TASK_SELECTION 1
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145 #if configUSE_PORT_OPTIMISED_TASK_SELECTION == 1
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147 /* Store/clear the ready priorities in a bit map. */
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148 #define portRECORD_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) |= ( 1UL << ( uxPriority ) )
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149 #define portRESET_READY_PRIORITY( uxPriority, uxReadyPriorities ) ( uxReadyPriorities ) &= ~( 1UL << ( uxPriority ) )
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151 /*-----------------------------------------------------------*/
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153 #define portGET_HIGHEST_PRIORITY( uxTopPriority, uxReadyPriorities ) uxTopPriority = ( 31UL - ( uint32_t ) __builtin_clz( uxReadyPriorities ) )
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155 #endif /* configUSE_PORT_OPTIMISED_TASK_SELECTION */
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157 #ifdef configASSERT
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158 void vPortValidateInterruptPriority( void );
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159 #define portASSERT_IF_INTERRUPT_PRIORITY_INVALID() vPortValidateInterruptPriority()
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160 #endif /* configASSERT */
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162 #define portNOP() __asm volatile ( "NOP" )
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163 #define portINLINE __inline
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170 /* The number of bits to shift for an interrupt priority is dependent on the
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171 * number of bits implemented by the interrupt controller. */
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172 #if configUNIQUE_INTERRUPT_PRIORITIES == 16
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173 #define portPRIORITY_SHIFT 4
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174 #define portMAX_BINARY_POINT_VALUE 3
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175 #elif configUNIQUE_INTERRUPT_PRIORITIES == 32
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176 #define portPRIORITY_SHIFT 3
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177 #define portMAX_BINARY_POINT_VALUE 2
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178 #elif configUNIQUE_INTERRUPT_PRIORITIES == 64
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179 #define portPRIORITY_SHIFT 2
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180 #define portMAX_BINARY_POINT_VALUE 1
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181 #elif configUNIQUE_INTERRUPT_PRIORITIES == 128
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182 #define portPRIORITY_SHIFT 1
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183 #define portMAX_BINARY_POINT_VALUE 0
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184 #elif configUNIQUE_INTERRUPT_PRIORITIES == 256
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185 #define portPRIORITY_SHIFT 0
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186 #define portMAX_BINARY_POINT_VALUE 0
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187 #else /* if configUNIQUE_INTERRUPT_PRIORITIES == 16 */
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188 #error Invalid configUNIQUE_INTERRUPT_PRIORITIES setting. configUNIQUE_INTERRUPT_PRIORITIES must be set to the number of unique priorities implemented by the target hardware
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189 #endif /* if configUNIQUE_INTERRUPT_PRIORITIES == 16 */
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191 /* Interrupt controller access addresses. */
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192 #define portICCPMR_PRIORITY_MASK_OFFSET ( 0x04 )
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193 #define portICCIAR_INTERRUPT_ACKNOWLEDGE_OFFSET ( 0x0C )
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194 #define portICCEOIR_END_OF_INTERRUPT_OFFSET ( 0x10 )
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195 #define portICCBPR_BINARY_POINT_OFFSET ( 0x08 )
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196 #define portICCRPR_RUNNING_PRIORITY_OFFSET ( 0x14 )
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198 #define portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS ( configINTERRUPT_CONTROLLER_BASE_ADDRESS + configINTERRUPT_CONTROLLER_CPU_INTERFACE_OFFSET )
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199 #define portICCPMR_PRIORITY_MASK_REGISTER ( *( ( volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCPMR_PRIORITY_MASK_OFFSET ) ) )
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200 #define portICCIAR_INTERRUPT_ACKNOWLEDGE_REGISTER_ADDRESS ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCIAR_INTERRUPT_ACKNOWLEDGE_OFFSET )
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201 #define portICCEOIR_END_OF_INTERRUPT_REGISTER_ADDRESS ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCEOIR_END_OF_INTERRUPT_OFFSET )
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202 #define portICCPMR_PRIORITY_MASK_REGISTER_ADDRESS ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCPMR_PRIORITY_MASK_OFFSET )
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203 #define portICCBPR_BINARY_POINT_REGISTER ( *( ( const volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCBPR_BINARY_POINT_OFFSET ) ) )
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204 #define portICCRPR_RUNNING_PRIORITY_REGISTER ( *( ( const volatile uint32_t * ) ( portINTERRUPT_CONTROLLER_CPU_INTERFACE_ADDRESS + portICCRPR_RUNNING_PRIORITY_OFFSET ) ) )
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206 #define portMEMORY_BARRIER() __asm volatile ( "" ::: "memory" )
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208 #endif /* PORTMACRO_H */
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