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New port files for V2 ColdFire/CodeWarrior added.

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This commit is contained in:
Richard Barry 2008-10-17 13:18:49 +00:00
parent 40f4287921
commit 5e89d113be
3 changed files with 453 additions and 0 deletions
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169
Source/portable/CodeWarrior/ColdFire_V2/port.c Normal file
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/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
http://www.FreeRTOS.org - Documentation, latest information, license and
contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
/* Kernel includes. */
#include "FreeRTOS.h"
#include "task.h"
#define portINITIAL_FORMAT_VECTOR ( ( portSTACK_TYPE ) 0x4000 )
/* Supervisor mode set. */
#define portINITIAL_STATUS_REGISTER ( ( portSTACK_TYPE ) 0x2000)
/* Used to keep track of the number of nested calls to taskENTER_CRITICAL(). This
will be set to 0 prior to the first task being started. */
static unsigned portLONG ulCriticalNesting = 0x9999UL;
#define portSAVE_CONTEXT() \
lea.l (-60, %sp), %sp; \
movem.l %d0-%fp, (%sp); \
move.l pxCurrentTCB, %a0; \
move.l %sp, (%a0);
#define portRESTORE_CONTEXT() \
move.l pxCurrentTCB, %a0; \
move.l (%a0), %sp; \
movem.l (%sp), %d0-%fp; \
lea.l %sp@(60), %sp; \
rte
/*-----------------------------------------------------------*/
portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE * pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
{
*pxTopOfStack = ( portSTACK_TYPE ) pvParameters;
pxTopOfStack--;
*pxTopOfStack = (portSTACK_TYPE) 0xDEADBEEF;
pxTopOfStack--;
/* Exception stack frame starts with the return address. */
*pxTopOfStack = ( portSTACK_TYPE ) pxCode;
pxTopOfStack--;
*pxTopOfStack = ( portINITIAL_FORMAT_VECTOR << 16UL ) | ( portINITIAL_STATUS_REGISTER );
pxTopOfStack--;
*pxTopOfStack = ( portSTACK_TYPE ) 0x0; /*FP*/
pxTopOfStack -= 14; /* A5 to D0. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
portBASE_TYPE xPortStartScheduler( void )
{
extern void vPortStartFirstTask( void );
ulCriticalNesting = 0UL;
/* Configure the interrupts used by this port. */
vApplicationSetupInterrupts();
/* Start the first task executing. */
vPortStartFirstTask();
return pdFALSE;
}
/*-----------------------------------------------------------*/
void vPortEndScheduler( void )
{
/* Not implemented as there is nothing to return to. */
}
/*-----------------------------------------------------------*/
void vPortEnterCritical( void )
{
if( ulCriticalNesting == 0UL )
{
/* Guard against context switches being pended simultaneously with a
critical section being entered. */
do
{
portDISABLE_INTERRUPTS();
if( MCF_INTC0_INTFRCH == 0UL )
{
break;
}
portENABLE_INTERRUPTS();
} while( 1 );
}
ulCriticalNesting++;
}
/*-----------------------------------------------------------*/
void vPortExitCritical( void )
{
ulCriticalNesting--;
if( ulCriticalNesting == 0 )
{
portENABLE_INTERRUPTS();
}
}
/*-----------------------------------------------------------*/
void vPortYieldHandler( void )
{
unsigned portLONG ulSavedInterruptMask;
ulSavedInterruptMask = portSET_INTERRUPT_MASK_FROM_ISR();
/* Note this will clear all forced interrupts - this is done for speed. */
MCF_INTC0_INTFRCL = 0;
vTaskSwitchContext();
portCLEAR_INTERRUPT_MASK_FROM_ISR( ulSavedInterruptMask );
}
/*-----------------------------------------------------------*/

152
Source/portable/CodeWarrior/ColdFire_V2/portasm.S Normal file
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/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
http://www.FreeRTOS.org - Documentation, latest information, license and
contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
/*
* Purpose: Lowest level routines for all ColdFire processors.
*
* Notes:
*
* ulPortSetIPL() and mcf5xxx_wr_cacr() copied with permission from FreeScale
* supplied source files.
*/
.global ulPortSetIPL
.global _ulPortSetIPL
.global mcf5xxx_wr_cacrx
.global _mcf5xxx_wr_cacrx
.global vPortYieldISR
.global _vPortYieldISR
.global vPortStartFirstTask
.global _vPortStartFirstTask
.extern _pxCurrentTCB
.extern _vPortYieldHandler
.text
.macro portSAVE_CONTEXT
lea.l (-60, sp), sp
movem.l d0-a6, (sp)
move.l _pxCurrentTCB, a0
move.l sp, (a0)
.endm
.macro portRESTORE_CONTEXT
move.l _pxCurrentTCB, a0
move.l (a0), sp
movem.l (sp), d0-a6
lea.l (60, sp), sp
rte
.endm
/********************************************************************/
/*
* This routines changes the IPL to the value passed into the routine.
* It also returns the old IPL value back.
* Calling convention from C:
* old_ipl = asm_set_ipl(new_ipl);
* For the Diab Data C compiler, it passes return value thru D0.
* Note that only the least significant three bits of the passed
* value are used.
*/
ulPortSetIPL:
_ulPortSetIPL:
link A6,#-8
movem.l D6-D7,(SP)
move.w SR,D7 /* current sr */
move.l D7,D0 /* prepare return value */
andi.l #0x0700,D0 /* mask out IPL */
lsr.l #8,D0 /* IPL */
move.l 8(A6),D6 /* get argument */
andi.l #0x07,D6 /* least significant three bits */
lsl.l #8,D6 /* move over to make mask */
andi.l #0x0000F8FF,D7 /* zero out current IPL */
or.l D6,D7 /* place new IPL in sr */
move.w D7,SR
movem.l (SP),D6-D7
lea 8(SP),SP
unlk A6
rts
/********************************************************************/
mcf5xxx_wr_cacrx:
_mcf5xxx_wr_cacrx:
move.l 4(sp),d0
.long 0x4e7b0002 /* movec d0,cacr */
nop
rts
/********************************************************************/
/* Yield interrupt. */
_vPortYieldISR:
vPortYieldISR:
portSAVE_CONTEXT
jsr _vPortYieldHandler
portRESTORE_CONTEXT
/********************************************************************/
vPortStartFirstTask:
_vPortStartFirstTask:
portRESTORE_CONTEXT
.end

132
Source/portable/CodeWarrior/ColdFire_V2/portmacro.h Normal file
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/*
FreeRTOS.org V5.0.4 - Copyright (C) 2003-2008 Richard Barry.
This file is part of the FreeRTOS.org distribution.
FreeRTOS.org is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
FreeRTOS.org is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with FreeRTOS.org; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes FreeRTOS.org, without being obliged to provide
the source code for any proprietary components. See the licensing section
of http://www.FreeRTOS.org for full details of how and when the exception
can be applied.
***************************************************************************
***************************************************************************
* *
* SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *
* and even write all or part of your application on your behalf. *
* See http://www.OpenRTOS.com for details of the services we provide to *
* expedite your project. *
* *
***************************************************************************
***************************************************************************
Please ensure to read the configuration and relevant port sections of the
online documentation.
http://www.FreeRTOS.org - Documentation, latest information, license and
contact details.
http://www.SafeRTOS.com - A version that is certified for use in safety
critical systems.
http://www.OpenRTOS.com - Commercial support, development, porting,
licensing and training services.
*/
#ifndef PORTMACRO_H
#define PORTMACRO_H
#ifdef __cplusplus
extern "C" {
#endif
/*-----------------------------------------------------------
* Port specific definitions.
*
* The settings in this file configure FreeRTOS correctly for the
* given hardware and compiler.
*
* These settings should not be altered.
*-----------------------------------------------------------
*/
/* Type definitions. */
#define portCHAR char
#define portFLOAT float
#define portDOUBLE double
#define portLONG long
#define portSHORT short
#define portSTACK_TYPE unsigned long
#define portBASE_TYPE long
#if( configUSE_16_BIT_TICKS == 1 )
typedef unsigned portSHORT portTickType;
#define portMAX_DELAY ( portTickType ) 0xffff
#else
typedef unsigned portLONG portTickType;
#define portMAX_DELAY ( portTickType ) 0xffffffff
#endif
/*-----------------------------------------------------------*/
/* Hardware specifics. */
#define portBYTE_ALIGNMENT 4
#define portSTACK_GROWTH -1
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
/*-----------------------------------------------------------*/
unsigned portLONG ulPortSetIPL( unsigned portLONG );
#define portDISABLE_INTERRUPTS() ulPortSetIPL( configMAX_SYSCALL_INTERRUPT_PRIORITY )
#define portENABLE_INTERRUPTS() ulPortSetIPL( 0 )
extern void vPortEnterCritical( void );
extern void vPortExitCritical( void );
#define portENTER_CRITICAL() vPortEnterCritical()
#define portEXIT_CRITICAL() vPortExitCritical()
extern unsigned portBASE_TYPE uxPortSetInterruptMaskFromISR( void );
extern void vPortClearInterruptMaskFromISR( unsigned portBASE_TYPE );
#define portSET_INTERRUPT_MASK_FROM_ISR() ulPortSetIPL( configMAX_SYSCALL_INTERRUPT_PRIORITY )
#define portCLEAR_INTERRUPT_MASK_FROM_ISR( uxSavedStatusRegister ) ulPortSetIPL( uxSavedStatusRegister )
/*-----------------------------------------------------------*/
/* Task utilities. */
#define portNOP() asm volatile ( "nop" )
/* Note this will overwrite all other bits in the force register, it is done this way for speed. */
#define portYIELD() MCF_INTC0_INTFRCL = ( 1UL << configYIELD_INTERRUPT_VECTOR ); portNOP(); portNOP() /* -32 as we are using the high word of the 64bit mask. */
/*-----------------------------------------------------------*/
/* Task function macros as described on the FreeRTOS.org WEB site. */
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters ) __attribute__((noreturn))
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
/*-----------------------------------------------------------*/
#define portEND_SWITCHING_ISR( xSwitchRequired ) if( xSwitchRequired != pdFALSE ) \
{ \
portYIELD(); \
}
#ifdef __cplusplus
}
#endif
#endif /* PORTMACRO_H */