New port files for V2 ColdFire/CodeWarrior added.

git-svn-id: https://freertos.svn.sourceforge.net/svnroot/freertos/trunk@490 1d2547de-c912-0410-9cb9-b8ca96c0e9e2

3 files changed, 453 insertions, 0 deletions

diff --git a/Source/portable/CodeWarrior/ColdFire_V2/port.c b/Source/portable/CodeWarrior/ColdFire_V2/port.c
new file mode 100644
index 00000000..19c447ff
--- /dev/null
+++ b/Source/portable/CodeWarrior/ColdFire_V2/port.c
@@ -0,0 +1,169 @@
+/*

+	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 );

+}

+/*-----------------------------------------------------------*/

+

diff --git a/Source/portable/CodeWarrior/ColdFire_V2/portasm.S b/Source/portable/CodeWarrior/ColdFire_V2/portasm.S
new file mode 100644
index 00000000..5869abe7
--- /dev/null
+++ b/Source/portable/CodeWarrior/ColdFire_V2/portasm.S
@@ -0,0 +1,152 @@
+/*

+	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

+

+

diff --git a/Source/portable/CodeWarrior/ColdFire_V2/portmacro.h b/Source/portable/CodeWarrior/ColdFire_V2/portmacro.h
new file mode 100644
index 00000000..86152f04
--- /dev/null
+++ b/Source/portable/CodeWarrior/ColdFire_V2/portmacro.h
@@ -0,0 +1,132 @@
+/*

+	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 */

+