2 FreeRTOS V7.5.0 - Copyright (C) 2013 Real Time Engineers Ltd.
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4 VISIT http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION.
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6 ***************************************************************************
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8 * FreeRTOS provides completely free yet professionally developed, *
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9 * robust, strictly quality controlled, supported, and cross *
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10 * platform software that has become a de facto standard. *
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12 * Help yourself get started quickly and support the FreeRTOS *
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13 * project by purchasing a FreeRTOS tutorial book, reference *
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14 * manual, or both from: http://www.FreeRTOS.org/Documentation *
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18 ***************************************************************************
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20 This file is part of the FreeRTOS distribution.
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22 FreeRTOS is free software; you can redistribute it and/or modify it under
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23 the terms of the GNU General Public License (version 2) as published by the
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24 Free Software Foundation >>!AND MODIFIED BY!<< the FreeRTOS exception.
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26 >>! NOTE: The modification to the GPL is included to allow you to distribute
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27 >>! a combined work that includes FreeRTOS without being obliged to provide
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28 >>! the source code for proprietary components outside of the FreeRTOS
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31 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY
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32 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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33 FOR A PARTICULAR PURPOSE. Full license text is available from the following
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34 link: http://www.freertos.org/a00114.html
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38 ***************************************************************************
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40 * Having a problem? Start by reading the FAQ "My application does *
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41 * not run, what could be wrong?" *
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43 * http://www.FreeRTOS.org/FAQHelp.html *
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45 ***************************************************************************
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47 http://www.FreeRTOS.org - Documentation, books, training, latest versions,
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48 license and Real Time Engineers Ltd. contact details.
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50 http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products,
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51 including FreeRTOS+Trace - an indispensable productivity tool, a DOS
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52 compatible FAT file system, and our tiny thread aware UDP/IP stack.
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54 http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High
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55 Integrity Systems to sell under the OpenRTOS brand. Low cost OpenRTOS
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56 licenses offer ticketed support, indemnification and middleware.
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58 http://www.SafeRTOS.com - High Integrity Systems also provide a safety
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59 engineered and independently SIL3 certified version for use in safety and
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60 mission critical applications that require provable dependability.
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72 #include <machine/ic.h>
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74 /*-----------------------------------------------------------
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75 * Port specific definitions.
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77 * The settings in this file configure FreeRTOS correctly for the
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78 * given hardware and compiler.
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80 * These settings should not be altered.
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81 *-----------------------------------------------------------
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84 /* Type definitions. */
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85 #define portCHAR char
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86 #define portFLOAT float
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87 #define portDOUBLE double
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88 #define portLONG long
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89 #define portSHORT short
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90 #define portSTACK_TYPE unsigned portLONG
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91 #define portBASE_TYPE portLONG
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93 #if( configUSE_16_BIT_TICKS == 1 )
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94 typedef unsigned portSHORT portTickType;
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95 #define portMAX_DELAY ( portTickType ) 0xffff
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97 typedef unsigned portLONG portTickType;
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98 #define portMAX_DELAY ( portTickType ) 0xffffffff
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100 /*-----------------------------------------------------------*/
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102 /* Architecture specifics. */
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103 #define portSTACK_GROWTH ( -1 )
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104 #define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
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105 #define portBYTE_ALIGNMENT 4
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106 #define portNOP() __asm__ volatile ( "mov r0, r0" )
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107 #define portCRITICAL_NESTING_IN_TCB 1
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108 #define portIRQ_TRAP_YIELD 31
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109 #define portKERNEL_INTERRUPT_PRIORITY_LEVEL 0
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110 #define portSYSTEM_INTERRUPT_PRIORITY_LEVEL 0
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111 /*-----------------------------------------------------------*/
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113 /* Task utilities. */
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115 extern void vPortYield( void );
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117 /*---------------------------------------------------------------------------*/
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119 #define portYIELD() asm __volatile__( " trap #%0 "::"i"(portIRQ_TRAP_YIELD):"memory")
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120 /*---------------------------------------------------------------------------*/
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122 extern void vTaskEnterCritical( void );
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123 extern void vTaskExitCritical( void );
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124 #define portENTER_CRITICAL() vTaskEnterCritical()
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125 #define portEXIT_CRITICAL() vTaskExitCritical()
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126 /*---------------------------------------------------------------------------*/
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128 /* Critical section management. */
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129 #define portDISABLE_INTERRUPTS() ic->cpl = ( portSYSTEM_INTERRUPT_PRIORITY_LEVEL + 1 )
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130 #define portENABLE_INTERRUPTS() ic->cpl = portKERNEL_INTERRUPT_PRIORITY_LEVEL
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132 /*---------------------------------------------------------------------------*/
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134 #define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) if( xHigherPriorityTaskWoken != pdFALSE ) vTaskSwitchContext()
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136 /*---------------------------------------------------------------------------*/
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138 #define portSAVE_CONTEXT() \
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141 "sub r1, #68 \n" /* Make space on the stack for the context. */ \
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142 "std r2, [r1] + 0 \n" \
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143 "stq r4, [r1] + 8 \n" \
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144 "stq r8, [r1] + 24 \n" \
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145 "stq r12, [r1] + 40 \n" \
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148 "std r6, [r1] + 56 \n" \
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149 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
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150 "ldub r3, [r2] + 2 \n" /* Load the current interrupt mask. */ \
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151 "st r3, [r1]+ 64 \n" /* Store the interrupt mask on the stack. */ \
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152 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the pointer to the TCB. */ \
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153 "st r1, [r2] \n" /* Save the stack pointer into the TCB. */ \
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154 "mov r14, r1 \n" /* Compiler expects r14 to be set to the function stack. */ \
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156 /*---------------------------------------------------------------------------*/
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158 #define portRESTORE_CONTEXT() \
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159 asm __volatile__( \
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160 "ld r2, [r0]+short(pxCurrentTCB) \n" /* Load the TCB to find the stack pointer and context. */ \
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162 "movhi r2, #16384 \n" /* Set the pointer to the IC. */ \
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163 "ld r3, [r1] + 64 \n" /* Load the previous interrupt mask. */ \
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164 "stb r3, [r2] + 2 \n" /* Set the current interrupt mask to be the previous. */ \
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165 "ldd r6, [r1] + 56 \n" /* Restore context. */ \
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168 "ldd r2, [r1] + 0 \n" \
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169 "ldq r4, [r1] + 8 \n" \
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170 "ldq r8, [r1] + 24 \n" \
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171 "ldq r12, [r1] + 40 \n" \
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176 /*---------------------------------------------------------------------------*/
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178 /* Task function macros as described on the FreeRTOS.org WEB site. */
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179 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
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180 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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181 /*---------------------------------------------------------------------------*/
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187 #endif /* PORTMACRO_H */
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