2 FreeRTOS V7.1.1 - Copyright (C) 2012 Real Time Engineers Ltd.
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5 ***************************************************************************
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7 * FreeRTOS tutorial books are available in pdf and paperback. *
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8 * Complete, revised, and edited pdf reference manuals are also *
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11 * Purchasing FreeRTOS documentation will not only help you, by *
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12 * ensuring you get running as quickly as possible and with an *
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13 * in-depth knowledge of how to use FreeRTOS, it will also help *
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14 * the FreeRTOS project to continue with its mission of providing *
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15 * professional grade, cross platform, de facto standard solutions *
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16 * for microcontrollers - completely free of charge! *
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18 * >>> See http://www.FreeRTOS.org/Documentation for details. <<< *
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20 * Thank you for using FreeRTOS, and thank you for your support! *
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22 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 >>>NOTE<<< The modification to the GPL is included to allow you to
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31 distribute a combined work that includes FreeRTOS without being obliged to
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32 provide the source code for proprietary components outside of the FreeRTOS
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33 kernel. FreeRTOS is distributed in the hope that it will be useful, but
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34 WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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35 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 ***************************************************************************
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46 * Having a problem? Start by reading the FAQ "My application does *
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47 * not run, what could be wrong? *
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49 * http://www.FreeRTOS.org/FAQHelp.html *
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51 ***************************************************************************
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54 http://www.FreeRTOS.org - Documentation, training, latest information,
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55 license and contact details.
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57 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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58 including FreeRTOS+Trace - an indispensable productivity tool.
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60 Real Time Engineers ltd license FreeRTOS to High Integrity Systems, who sell
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61 the code with commercial support, indemnification, and middleware, under
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62 the OpenRTOS brand: http://www.OpenRTOS.com. High Integrity Systems also
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63 provide a safety engineered and independently SIL3 certified version under
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64 the SafeRTOS brand: http://www.SafeRTOS.com.
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74 #include <machine/ic.h>
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76 /*-----------------------------------------------------------
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77 * Port specific definitions.
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79 * The settings in this file configure FreeRTOS correctly for the
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80 * given hardware and compiler.
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82 * These settings should not be altered.
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83 *-----------------------------------------------------------
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86 /* Type definitions. */
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87 #define portCHAR char
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88 #define portFLOAT float
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89 #define portDOUBLE double
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90 #define portLONG long
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91 #define portSHORT short
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92 #define portSTACK_TYPE unsigned portLONG
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93 #define portBASE_TYPE portLONG
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95 #if( configUSE_16_BIT_TICKS == 1 )
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96 typedef unsigned portSHORT portTickType;
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97 #define portMAX_DELAY ( portTickType ) 0xffff
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99 typedef unsigned portLONG portTickType;
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100 #define portMAX_DELAY ( portTickType ) 0xffffffff
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102 /*-----------------------------------------------------------*/
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104 /* Architecture specifics. */
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105 #define portSTACK_GROWTH ( -1 )
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106 #define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
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107 #define portBYTE_ALIGNMENT 4
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108 #define portNOP() __asm__ volatile ( "mov r0, r0" )
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109 #define portCRITICAL_NESTING_IN_TCB 1
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110 #define portIRQ_TRAP_YIELD 31
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111 #define portKERNEL_INTERRUPT_PRIORITY_LEVEL 0
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112 #define portSYSTEM_INTERRUPT_PRIORITY_LEVEL 0
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113 /*-----------------------------------------------------------*/
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115 /* Task utilities. */
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117 extern void vPortYield( void );
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119 /*---------------------------------------------------------------------------*/
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121 #define portYIELD() asm __volatile__( " trap #%0 "::"i"(portIRQ_TRAP_YIELD):"memory")
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122 /*---------------------------------------------------------------------------*/
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124 extern void vTaskEnterCritical( void );
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125 extern void vTaskExitCritical( void );
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126 #define portENTER_CRITICAL() vTaskEnterCritical()
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127 #define portEXIT_CRITICAL() vTaskExitCritical()
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128 /*---------------------------------------------------------------------------*/
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130 /* Critical section management. */
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131 #define portDISABLE_INTERRUPTS() ic->cpl = ( portSYSTEM_INTERRUPT_PRIORITY_LEVEL + 1 )
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132 #define portENABLE_INTERRUPTS() ic->cpl = portKERNEL_INTERRUPT_PRIORITY_LEVEL
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134 /*---------------------------------------------------------------------------*/
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136 #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext()
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138 /*---------------------------------------------------------------------------*/
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140 #define portSAVE_CONTEXT() \
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143 "sub r1, #68 \n" /* Make space on the stack for the context. */ \
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144 "std r2, [r1] + 0 \n" \
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145 "stq r4, [r1] + 8 \n" \
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146 "stq r8, [r1] + 24 \n" \
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147 "stq r12, [r1] + 40 \n" \
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150 "std r6, [r1] + 56 \n" \
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151 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
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152 "ldub r3, [r2] + 2 \n" /* Load the current interrupt mask. */ \
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153 "st r3, [r1]+ 64 \n" /* Store the interrupt mask on the stack. */ \
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154 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the pointer to the TCB. */ \
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155 "st r1, [r2] \n" /* Save the stack pointer into the TCB. */ \
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156 "mov r14, r1 \n" /* Compiler expects r14 to be set to the function stack. */ \
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158 /*---------------------------------------------------------------------------*/
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160 #define portRESTORE_CONTEXT() \
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161 asm __volatile__( \
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162 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the TCB to find the stack pointer and context. */ \
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164 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
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165 "ld r3, [r1] + 64 \n" /* Load the previous interrupt mask. */ \
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166 "stb r3, [r2] + 2 \n" /* Set the current interrupt mask to be the previous. */ \
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167 "ldd r6, [r1] + 56 \n" /* Restore context. */ \
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170 "ldd r2, [r1] + 0 \n" \
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171 "ldq r4, [r1] + 8 \n" \
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172 "ldq r8, [r1] + 24 \n" \
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173 "ldq r12, [r1] + 40 \n" \
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178 /*---------------------------------------------------------------------------*/
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180 /* Task function macros as described on the FreeRTOS.org WEB site. */
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181 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
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182 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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183 /*---------------------------------------------------------------------------*/
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189 #endif /* PORTMACRO_H */
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projects / freertos / blob