Add CM3 MPU port.
Richard Barry
16 years ago
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531faedf63
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/*
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FreeRTOS V5.4.2 - Copyright (C) 2009 Real Time Engineers Ltd.
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This file is part of the FreeRTOS distribution.
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FreeRTOS is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License (version 2) as published by the
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Free Software Foundation and modified by the FreeRTOS exception.
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**NOTE** The exception to the GPL is included to allow you to distribute a
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combined work that includes FreeRTOS without being obliged to provide the
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source code for proprietary components outside of the FreeRTOS kernel.
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Alternative commercial license and support terms are also available upon
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request. See the licensing section of http://www.FreeRTOS.org for full
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license details.
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FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along
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with FreeRTOS; if not, write to the Free Software Foundation, Inc., 59
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Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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***************************************************************************
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* *
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* Looking for a quick start? Then check out the FreeRTOS eBook! *
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* See http://www.FreeRTOS.org/Documentation for details *
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* *
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***************************************************************************
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1 tab == 4 spaces!
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Please ensure to read the configuration and relevant port sections of the
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online documentation.
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http://www.FreeRTOS.org - Documentation, latest information, license and
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contact details.
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http://www.SafeRTOS.com - A version that is certified for use in safety
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critical systems.
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http://www.OpenRTOS.com - Commercial support, development, porting,
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licensing and training services.
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*-----------------------------------------------------------
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* Port specific definitions.
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*
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* The settings in this file configure FreeRTOS correctly for the
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* given hardware and compiler.
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*
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* These settings should not be altered.
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*-----------------------------------------------------------
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*/
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/* Type definitions. */
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#define portCHAR char
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#define portFLOAT float
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#define portDOUBLE double
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#define portLONG long
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#define portSHORT short
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#define portSTACK_TYPE unsigned portLONG
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#define portBASE_TYPE long
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#if( configUSE_16_BIT_TICKS == 1 )
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typedef unsigned portSHORT portTickType;
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#define portMAX_DELAY ( portTickType ) 0xffff
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#else
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typedef unsigned portLONG portTickType;
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#define portMAX_DELAY ( portTickType ) 0xffffffff
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#endif
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/*-----------------------------------------------------------*/
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/* MPU specific constants. */
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#define portUSING_MPU_WRAPPERS 1
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#define portPRIVILEGE_BIT ( 0x80000000UL )
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#define portMPU_REGION_READ_WRITE ( 0x03UL << 24UL )
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#define portMPU_REGION_PRIVILEGED_READ_ONLY ( 0x05UL << 24UL )
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#define portMPU_REGION_READ_ONLY ( 0x06UL << 24UL )
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#define portMPU_REGION_PRIVILEGED_READ_WRITE ( 0x01UL << 24UL )
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#define portMPU_REGION_CACHEABLE_BUFFERABLE ( 0x07UL << 16UL )
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#define portMPU_REGION_EXECUTE_NEVER ( 0x01UL << 28UL )
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#define portUNPRIVILEGED_FLASH_REGION ( 0UL )
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#define portPRIVILEGED_FLASH_REGION ( 1UL )
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#define portPRIVILEGED_RAM_REGION ( 2UL )
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#define portGENERAL_PERIPHERALS_REGION ( 3UL )
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#define portSTACK_REGION ( 4UL )
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#define portFIRST_CONFIGURABLE_REGION ( 5UL )
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#define portLAST_CONFIGURABLE_REGION ( 7UL )
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#define portNUM_CONFIGURABLE_REGIONS ( ( portLAST_CONFIGURABLE_REGION - portFIRST_CONFIGURABLE_REGION ) + 1 )
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#define portTOTAL_NUM_REGIONS ( portNUM_CONFIGURABLE_REGIONS + 1 ) /* Plus one to make space for the stack region. */
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#define portSWITCH_TO_USER_MODE() __asm volatile ( " mrs r0, control \n orr r0, #1 \n msr control, r0 " )
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typedef struct MPU_REGION_REGISTERS
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{
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unsigned portLONG ulRegionBaseAddress;
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unsigned portLONG ulRegionAttribute;
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} xMPU_REGION_REGISTERS;
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/* Plus 1 to create space for the stack region. */
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typedef struct MPU_SETTINGS
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{
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xMPU_REGION_REGISTERS xRegion[ portTOTAL_NUM_REGIONS ];
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} xMPU_SETTINGS;
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/* Architecture specifics. */
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#define portSTACK_GROWTH ( -1 )
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#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
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#define portBYTE_ALIGNMENT 8
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/*-----------------------------------------------------------*/
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/* SVC numbers for various services. */
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#define portSVC_START_SCHEDULER 0
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#define portSVC_YIELD 1
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#define portSVC_prvRaisePrivilege 2
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/* Scheduler utilities. */
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#define portYIELD() __asm volatile ( " SVC %0 \n" :: "i" (portSVC_YIELD) )
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#define portYIELD_WITHIN_API() *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET
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#define portNVIC_INT_CTRL ( ( volatile unsigned portLONG *) 0xe000ed04 )
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#define portNVIC_PENDSVSET 0x10000000
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#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired ) *(portNVIC_INT_CTRL) = portNVIC_PENDSVSET
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/*-----------------------------------------------------------*/
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/* Critical section management. */
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/*
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* Set basepri to portMAX_SYSCALL_INTERRUPT_PRIORITY without effecting other
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* registers. r0 is clobbered.
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*/
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#define portSET_INTERRUPT_MASK() \
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__asm volatile \
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( \
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" mov r0, %0 \n" \
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" msr basepri, r0 \n" \
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::"i"(configMAX_SYSCALL_INTERRUPT_PRIORITY):"r0" \
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)
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/*
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* Set basepri back to 0 without effective other registers.
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* r0 is clobbered.
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*/
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#define portCLEAR_INTERRUPT_MASK() \
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__asm volatile \
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( \
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" mov r0, #0 \n" \
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" msr basepri, r0 \n" \
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:::"r0" \
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)
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#define portSET_INTERRUPT_MASK_FROM_ISR() 0;portSET_INTERRUPT_MASK()
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#define portCLEAR_INTERRUPT_MASK_FROM_ISR(x) portCLEAR_INTERRUPT_MASK();(void)x
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extern void vPortEnterCritical( void );
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extern void vPortExitCritical( void );
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#define portDISABLE_INTERRUPTS() portSET_INTERRUPT_MASK()
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#define portENABLE_INTERRUPTS() portCLEAR_INTERRUPT_MASK()
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#define portENTER_CRITICAL() vPortEnterCritical()
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#define portEXIT_CRITICAL() vPortExitCritical()
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/*-----------------------------------------------------------*/
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/* Task function macros as described on the FreeRTOS.org WEB site. */
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#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
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#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
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#define portNOP()
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#ifdef __cplusplus
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}
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#endif
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#endif /* PORTMACRO_H */
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