2 FreeRTOS V6.0.0 - Copyright (C) 2009 Real Time Engineers Ltd.
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4 This file is part of the FreeRTOS distribution.
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6 FreeRTOS is free software; you can redistribute it and/or modify it under
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7 the terms of the GNU General Public License (version 2) as published by the
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8 Free Software Foundation and modified by the FreeRTOS exception.
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9 **NOTE** The exception to the GPL is included to allow you to distribute a
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10 combined work that includes FreeRTOS without being obliged to provide the
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11 source code for proprietary components outside of the FreeRTOS kernel.
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12 Alternative commercial license and support terms are also available upon
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13 request. See the licensing section of http://www.FreeRTOS.org for full
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16 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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17 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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18 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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21 You should have received a copy of the GNU General Public License along
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22 with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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23 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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26 ***************************************************************************
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28 * The FreeRTOS eBook and reference manual are available to purchase for a *
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29 * small fee. Help yourself get started quickly while also helping the *
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30 * FreeRTOS project! See http://www.FreeRTOS.org/Documentation for details *
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32 ***************************************************************************
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36 Please ensure to read the configuration and relevant port sections of the
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37 online documentation.
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39 http://www.FreeRTOS.org - Documentation, latest information, license and
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42 http://www.SafeRTOS.com - A version that is certified for use in safety
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45 http://www.OpenRTOS.com - Commercial support, development, porting,
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46 licensing and training services.
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57 /*-----------------------------------------------------------
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58 * Port specific definitions.
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60 * The settings in this file configure FreeRTOS correctly for the
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61 * given hardware and compiler.
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63 * These settings should not be altered.
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64 *-----------------------------------------------------------
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67 /* Type definitions. */
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68 #define portCHAR char
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69 #define portFLOAT float
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70 #define portDOUBLE double
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71 #define portLONG long
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72 #define portSHORT short
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73 #define portSTACK_TYPE unsigned portLONG
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74 #define portBASE_TYPE long
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76 #if( configUSE_16_BIT_TICKS == 1 )
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77 typedef unsigned portSHORT portTickType;
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78 #define portMAX_DELAY ( portTickType ) 0xffff
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80 typedef unsigned portLONG portTickType;
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81 #define portMAX_DELAY ( portTickType ) 0xffffffff
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83 /*-----------------------------------------------------------*/
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85 /* MPU specific constants. */
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86 #define portUSING_MPU_WRAPPERS 1
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87 #define portPRIVILEGE_BIT ( 0x80000000UL )
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89 #define portMPU_REGION_READ_WRITE ( 0x03UL << 24UL )
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90 #define portMPU_REGION_PRIVILEGED_READ_ONLY ( 0x05UL << 24UL )
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91 #define portMPU_REGION_READ_ONLY ( 0x06UL << 24UL )
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92 #define portMPU_REGION_PRIVILEGED_READ_WRITE ( 0x01UL << 24UL )
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93 #define portMPU_REGION_CACHEABLE_BUFFERABLE ( 0x07UL << 16UL )
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94 #define portMPU_REGION_EXECUTE_NEVER ( 0x01UL << 28UL )
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96 #define portUNPRIVILEGED_FLASH_REGION ( 0UL )
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97 #define portPRIVILEGED_FLASH_REGION ( 1UL )
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98 #define portPRIVILEGED_RAM_REGION ( 2UL )
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99 #define portGENERAL_PERIPHERALS_REGION ( 3UL )
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100 #define portSTACK_REGION ( 4UL )
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101 #define portFIRST_CONFIGURABLE_REGION ( 5UL )
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102 #define portLAST_CONFIGURABLE_REGION ( 7UL )
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103 #define portNUM_CONFIGURABLE_REGIONS ( ( portLAST_CONFIGURABLE_REGION - portFIRST_CONFIGURABLE_REGION ) + 1 )
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104 #define portTOTAL_NUM_REGIONS ( portNUM_CONFIGURABLE_REGIONS + 1 ) /* Plus one to make space for the stack region. */
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106 #define portSWITCH_TO_USER_MODE() __asm volatile ( " mrs r0, control \n orr r0, #1 \n msr control, r0 " )
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108 typedef struct MPU_REGION_REGISTERS
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110 unsigned portLONG ulRegionBaseAddress;
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111 unsigned portLONG ulRegionAttribute;
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112 } xMPU_REGION_REGISTERS;
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114 /* Plus 1 to create space for the stack region. */
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115 typedef struct MPU_SETTINGS
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117 xMPU_REGION_REGISTERS xRegion[ portTOTAL_NUM_REGIONS ];
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120 /* Architecture specifics. */
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121 #define portSTACK_GROWTH ( -1 )
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122 #define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
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123 #define portBYTE_ALIGNMENT 8
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124 /*-----------------------------------------------------------*/
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126 /* SVC numbers for various services. */
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127 #define portSVC_START_SCHEDULER 0
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128 #define portSVC_YIELD 1
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129 #define portSVC_prvRaisePrivilege 2
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131 /* Scheduler utilities. */
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133 #define portYIELD() __asm volatile ( " SVC %0 \n" :: "i" (portSVC_YIELD) )
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134 #define portYIELD_WITHIN_API() *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET
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136 #define portNVIC_INT_CTRL ( ( volatile unsigned portLONG *) 0xe000ed04 )
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137 #define portNVIC_PENDSVSET 0x10000000
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138 #define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET
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139 /*-----------------------------------------------------------*/
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142 /* Critical section management. */
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145 * Set basepri to portMAX_SYSCALL_INTERRUPT_PRIORITY without effecting other
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146 * registers. r0 is clobbered.
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148 #define portSET_INTERRUPT_MASK() \
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152 " msr basepri, r0 \n" \
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153 ::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY):"r0" \
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157 * Set basepri back to 0 without effective other registers.
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160 #define portCLEAR_INTERRUPT_MASK() \
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164 " msr basepri, r0 \n" \
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168 #define portSET_INTERRUPT_MASK_FROM_ISR() 0;portSET_INTERRUPT_MASK()
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169 #define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) portCLEAR_INTERRUPT_MASK();(void)x
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172 extern void vPortEnterCritical( void );
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173 extern void vPortExitCritical( void );
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175 #define portDISABLE_INTERRUPTS() portSET_INTERRUPT_MASK()
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176 #define portENABLE_INTERRUPTS() portCLEAR_INTERRUPT_MASK()
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177 #define portENTER_CRITICAL() vPortEnterCritical()
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178 #define portEXIT_CRITICAL() vPortExitCritical()
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179 /*-----------------------------------------------------------*/
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181 /* Task function macros as described on the FreeRTOS.org WEB site. */
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182 #define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
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183 #define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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193 #endif /* PORTMACRO_H */
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