-/*
- FreeRTOS.org V5.0.0 - 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.
-*/
-
-/*-----------------------------------------------------------
- * Implementation of functions defined in portable.h for the PPC405 port.
- *----------------------------------------------------------*/
-
-
-/* Scheduler includes. */
-#include "FreeRTOS.h"
-#include "task.h"
-
-/* Library includes. */
-#include "xtime_l.h"
-#include "xintc.h"
-#include "xintc_i.h"
-
-/*-----------------------------------------------------------*/
-
-/* Definitions to set the initial MSR of each task. */
-#define portCRITICAL_INTERRUPT_ENABLE ( 1UL << 17UL )
-#define portEXTERNAL_INTERRUPT_ENABLE ( 1UL << 15UL )
-#define portMACHINE_CHECK_ENABLE ( 1UL << 12UL )
-
-#if configUSE_FPU == 1
- #define portAPU_PRESENT ( 1UL << 25UL )
- #define portFCM_FPU_PRESENT ( 1UL << 13UL )
-#else
- #define portAPU_PRESENT ( 0UL )
- #define portFCM_FPU_PRESENT ( 0UL )
-#endif
-
-#define portINITIAL_MSR ( portCRITICAL_INTERRUPT_ENABLE | portEXTERNAL_INTERRUPT_ENABLE | portMACHINE_CHECK_ENABLE | portAPU_PRESENT | portFCM_FPU_PRESENT )
-
-/*-----------------------------------------------------------*/
-
-/*
- * Setup the system timer to generate the tick interrupt.
- */
-static void prvSetupTimerInterrupt( void );
-
-/*
- * The handler for the tick interrupt - defined in portasm.s.
- */
-extern void vPortTickISR( void );
-
-/*
- * The handler for the yield function - defined in portasm.s.
- */
-extern void vPortYield( void );
-
-/*
- * Function to start the scheduler running by starting the highest
- * priority task that has thus far been created.
- */
-extern void vPortStartFirstTask( void );
-
-/*-----------------------------------------------------------*/
-
-/* Structure used to hold the state of the interrupt controller. */
-static XIntc xInterruptController;
-
-/*-----------------------------------------------------------*/
-
-/*
- * Initialise the stack of a task to look exactly as if the task had been
- * interrupted.
- *
- * See the header file portable.h.
- */
-portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
-{
- /* Place a known value at the bottom of the stack for debugging. */
- *pxTopOfStack = 0xDEADBEEF;
- pxTopOfStack--;
-
- /* EABI stack frame. */
- pxTopOfStack -= 30; /* Previous backchain and LR, R31 to R4 inclusive. */
-
- /* Parameters in R3. */
- *pxTopOfStack = ( portSTACK_TYPE ) pvParameters;
- pxTopOfStack--;
- *pxTopOfStack = 0x02020202UL; /* R2. */
- pxTopOfStack--;
-
- /* R1 is the stack pointer so is omitted. */
-
- *pxTopOfStack = 0x10000001UL;; /* R0. */
- pxTopOfStack--;
- *pxTopOfStack = 0x00000000UL; /* USPRG0. */
- pxTopOfStack--;
- *pxTopOfStack = 0x00000000UL; /* CR. */
- pxTopOfStack--;
- *pxTopOfStack = 0x00000000UL; /* XER. */
- pxTopOfStack--;
- *pxTopOfStack = 0x00000000UL; /* CTR. */
- pxTopOfStack--;
- *pxTopOfStack = ( portSTACK_TYPE ) vPortEndScheduler; /* LR. */
- pxTopOfStack--;
- *pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* SRR0. */
- pxTopOfStack--;
- *pxTopOfStack = portINITIAL_MSR;/* SRR1. */
- pxTopOfStack--;
- *pxTopOfStack = ( portSTACK_TYPE ) vPortEndScheduler;/* Next LR. */
- pxTopOfStack--;
- *pxTopOfStack = 0x00000000UL;/* Backchain. */
-
- return pxTopOfStack;
-}
-/*-----------------------------------------------------------*/
-
-portBASE_TYPE xPortStartScheduler( void )
-{
- prvSetupTimerInterrupt();
- XExc_RegisterHandler( XEXC_ID_SYSTEM_CALL, ( XExceptionHandler ) vPortYield, ( void * ) 0 );
- vPortStartFirstTask();
-
- /* Should not get here as the tasks are now running! */
- return pdFALSE;
-}
-/*-----------------------------------------------------------*/
-
-void vPortEndScheduler( void )
-{
- /* Not implemented. */
- for( ;; );
-}
-/*-----------------------------------------------------------*/
-
-/*
- * Hardware initialisation to generate the RTOS tick.
- */
-static void prvSetupTimerInterrupt( void )
-{
-const unsigned portLONG ulInterval = ( ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL );
-
- XTime_PITClearInterrupt();
- XTime_FITClearInterrupt();
- XTime_WDTClearInterrupt();
- XTime_WDTDisableInterrupt();
- XTime_FITDisableInterrupt();
-
- XExc_RegisterHandler( XEXC_ID_PIT_INT, ( XExceptionHandler ) vPortTickISR, ( void * ) 0 );
-
- XTime_PITEnableAutoReload();
- XTime_PITSetInterval( ulInterval );
- XTime_PITEnableInterrupt();
-}
-/*-----------------------------------------------------------*/
-
-void vPortISRHandler( void *pvNullDoNotUse )
-{
-unsigned portLONG ulInterruptStatus, ulInterruptMask = 1UL;
-portBASE_TYPE xInterruptNumber;
-XIntc_Config *pxInterruptController;
-XIntc_VectorTableEntry *pxTable;
-\r
- /* Just to remove compiler warning. */
+/*\r
+ FreeRTOS.org V5.0.2 - Copyright (C) 2003-2008 Richard Barry.\r
+\r
+ This file is part of the FreeRTOS.org distribution.\r
+\r
+ FreeRTOS.org is free software; you can redistribute it and/or modify\r
+ it under the terms of the GNU General Public License as published by\r
+ the Free Software Foundation; either version 2 of the License, or\r
+ (at your option) any later version.\r
+\r
+ FreeRTOS.org is distributed in the hope that it will be useful,\r
+ but WITHOUT ANY WARRANTY; without even the implied warranty of\r
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\r
+ GNU General Public License for more details.\r
+\r
+ You should have received a copy of the GNU General Public License\r
+ along with FreeRTOS.org; if not, write to the Free Software\r
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA\r
+\r
+ A special exception to the GPL can be applied should you wish to distribute\r
+ a combined work that includes FreeRTOS.org, without being obliged to provide\r
+ the source code for any proprietary components. See the licensing section \r
+ of http://www.FreeRTOS.org for full details of how and when the exception\r
+ can be applied.\r
+\r
+ ***************************************************************************\r
+ ***************************************************************************\r
+ * *\r
+ * SAVE TIME AND MONEY! We can port FreeRTOS.org to your own hardware, *\r
+ * and even write all or part of your application on your behalf. *\r
+ * See http://www.OpenRTOS.com for details of the services we provide to *\r
+ * expedite your project. *\r
+ * *\r
+ ***************************************************************************\r
+ ***************************************************************************\r
+\r
+ Please ensure to read the configuration and relevant port sections of the\r
+ online documentation.\r
+\r
+ http://www.FreeRTOS.org - Documentation, latest information, license and \r
+ contact details.\r
+\r
+ http://www.SafeRTOS.com - A version that is certified for use in safety \r
+ critical systems.\r
+\r
+ http://www.OpenRTOS.com - Commercial support, development, porting, \r
+ licensing and training services.\r
+*/\r
+\r
+/*-----------------------------------------------------------\r
+ * Implementation of functions defined in portable.h for the PPC405 port.\r
+ *----------------------------------------------------------*/\r
+\r
+\r
+/* Scheduler includes. */\r
+#include "FreeRTOS.h"\r
+#include "task.h"\r
+\r
+/* Library includes. */\r
+#include "xtime_l.h"\r
+#include "xintc.h"\r
+#include "xintc_i.h"\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+/* Definitions to set the initial MSR of each task. */\r
+#define portCRITICAL_INTERRUPT_ENABLE ( 1UL << 17UL )\r
+#define portEXTERNAL_INTERRUPT_ENABLE ( 1UL << 15UL )\r
+#define portMACHINE_CHECK_ENABLE ( 1UL << 12UL )\r
+\r
+#if configUSE_FPU == 1\r
+ #define portAPU_PRESENT ( 1UL << 25UL )\r
+ #define portFCM_FPU_PRESENT ( 1UL << 13UL )\r
+#else\r
+ #define portAPU_PRESENT ( 0UL )\r
+ #define portFCM_FPU_PRESENT ( 0UL )\r
+#endif\r
+\r
+#define portINITIAL_MSR ( portCRITICAL_INTERRUPT_ENABLE | portEXTERNAL_INTERRUPT_ENABLE | portMACHINE_CHECK_ENABLE | portAPU_PRESENT | portFCM_FPU_PRESENT )\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+/*\r
+ * Setup the system timer to generate the tick interrupt.\r
+ */\r
+static void prvSetupTimerInterrupt( void );\r
+\r
+/*\r
+ * The handler for the tick interrupt - defined in portasm.s.\r
+ */\r
+extern void vPortTickISR( void );\r
+\r
+/*\r
+ * The handler for the yield function - defined in portasm.s.\r
+ */\r
+extern void vPortYield( void );\r
+\r
+/*\r
+ * Function to start the scheduler running by starting the highest\r
+ * priority task that has thus far been created.\r
+ */\r
+extern void vPortStartFirstTask( void );\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+/* Structure used to hold the state of the interrupt controller. */\r
+static XIntc xInterruptController;\r
+\r
+/*-----------------------------------------------------------*/\r
+\r
+/* \r
+ * Initialise the stack of a task to look exactly as if the task had been\r
+ * interrupted.\r
+ * \r
+ * See the header file portable.h.\r
+ */\r
+portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )\r
+{\r
+ /* Place a known value at the bottom of the stack for debugging. */\r
+ *pxTopOfStack = 0xDEADBEEF;\r
+ pxTopOfStack--;\r
+\r
+ /* EABI stack frame. */\r
+ pxTopOfStack -= 30; /* Previous backchain and LR, R31 to R4 inclusive. */\r
+\r
+ /* Parameters in R3. */\r
+ *pxTopOfStack = ( portSTACK_TYPE ) pvParameters;\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = 0x02020202UL; /* R2. */\r
+ pxTopOfStack--;\r
+\r
+ /* R1 is the stack pointer so is omitted. */\r
+\r
+ *pxTopOfStack = 0x10000001UL;; /* R0. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = 0x00000000UL; /* USPRG0. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = 0x00000000UL; /* CR. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = 0x00000000UL; /* XER. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = 0x00000000UL; /* CTR. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = ( portSTACK_TYPE ) vPortEndScheduler; /* LR. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* SRR0. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = portINITIAL_MSR;/* SRR1. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = ( portSTACK_TYPE ) vPortEndScheduler;/* Next LR. */\r
+ pxTopOfStack--;\r
+ *pxTopOfStack = 0x00000000UL;/* Backchain. */\r
+\r
+ return pxTopOfStack;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+portBASE_TYPE xPortStartScheduler( void )\r
+{\r
+ prvSetupTimerInterrupt();\r
+ XExc_RegisterHandler( XEXC_ID_SYSTEM_CALL, ( XExceptionHandler ) vPortYield, ( void * ) 0 );\r
+ vPortStartFirstTask();\r
+\r
+ /* Should not get here as the tasks are now running! */\r
+ return pdFALSE;\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vPortEndScheduler( void )\r
+{\r
+ /* Not implemented. */\r
+ for( ;; );\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+/*\r
+ * Hardware initialisation to generate the RTOS tick. \r
+ */\r
+static void prvSetupTimerInterrupt( void )\r
+{\r
+const unsigned portLONG ulInterval = ( ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL );\r
+\r
+ XTime_PITClearInterrupt();\r
+ XTime_FITClearInterrupt();\r
+ XTime_WDTClearInterrupt();\r
+ XTime_WDTDisableInterrupt();\r
+ XTime_FITDisableInterrupt();\r
+\r
+ XExc_RegisterHandler( XEXC_ID_PIT_INT, ( XExceptionHandler ) vPortTickISR, ( void * ) 0 );\r
+\r
+ XTime_PITEnableAutoReload();\r
+ XTime_PITSetInterval( ulInterval );\r
+ XTime_PITEnableInterrupt();\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vPortISRHandler( void *pvNullDoNotUse )\r
+{\r
+unsigned portLONG ulInterruptStatus, ulInterruptMask = 1UL;\r
+portBASE_TYPE xInterruptNumber;\r
+XIntc_Config *pxInterruptController;\r
+XIntc_VectorTableEntry *pxTable;\r
+\r
+ /* Just to remove compiler warning. */\r
( void ) pvNullDoNotUse; \r
-
- /* Get the configuration by using the device ID - in this case it is
- assumed that only one interrupt controller is being used. */
- pxInterruptController = &XIntc_ConfigTable[ XPAR_XPS_INTC_0_DEVICE_ID ];
-
- /* Which interrupts are pending? */
- ulInterruptStatus = XIntc_mGetIntrStatus( pxInterruptController->BaseAddress );
-
- for( xInterruptNumber = 0; xInterruptNumber < XPAR_INTC_MAX_NUM_INTR_INPUTS; xInterruptNumber++ )
- {
- if( ulInterruptStatus & 0x01UL )
- {
- /* Clear the pending interrupt. */
- XIntc_mAckIntr( pxInterruptController->BaseAddress, ulInterruptMask );
-
- /* Call the registered handler. */
- pxTable = &( pxInterruptController->HandlerTable[ xInterruptNumber ] );
- pxTable->Handler( pxTable->CallBackRef );
- }
-
- /* Check the next interrupt. */
- ulInterruptMask <<= 0x01UL;
- ulInterruptStatus >>= 0x01UL;
-
- /* Have we serviced all interrupts? */
- if( ulInterruptStatus == 0UL )
- {
- break;
- }
- }
-}
-/*-----------------------------------------------------------*/
-
-void vPortSetupInterruptController( void )
-{
-extern void vPortISRWrapper( void );
-
- /* Perform all library calls necessary to initialise the exception table
- and interrupt controller. This assumes only one interrupt controller is in
- use. */
- XExc_mDisableExceptions( XEXC_NON_CRITICAL );
- XExc_Init();
-
- /* The library functions save the context - we then jump to a wrapper to
- save the stack into the TCB. The wrapper then calls the handler defined
- above. */
- XExc_RegisterHandler( XEXC_ID_NON_CRITICAL_INT, ( XExceptionHandler ) vPortISRWrapper, NULL );
- XIntc_Initialize( &xInterruptController, XPAR_XPS_INTC_0_DEVICE_ID );
- XIntc_Start( &xInterruptController, XIN_REAL_MODE );
-}
-/*-----------------------------------------------------------*/
-
-portBASE_TYPE xPortInstallInterruptHandler( unsigned portCHAR ucInterruptID, XInterruptHandler pxHandler, void *pvCallBackRef )
-{
-portBASE_TYPE xReturn = pdFAIL;
-
- /* This function is defined here so the scope of xInterruptController can
- remain within this file. */
-
- if( XST_SUCCESS == XIntc_Connect( &xInterruptController, ucInterruptID, pxHandler, pvCallBackRef ) )
- {
- XIntc_Enable( &xInterruptController, ucInterruptID );
- xReturn = pdPASS;
- }
-
- return xReturn;
-}
+\r
+ /* Get the configuration by using the device ID - in this case it is\r
+ assumed that only one interrupt controller is being used. */\r
+ pxInterruptController = &XIntc_ConfigTable[ XPAR_XPS_INTC_0_DEVICE_ID ];\r
+ \r
+ /* Which interrupts are pending? */\r
+ ulInterruptStatus = XIntc_mGetIntrStatus( pxInterruptController->BaseAddress );\r
+ \r
+ for( xInterruptNumber = 0; xInterruptNumber < XPAR_INTC_MAX_NUM_INTR_INPUTS; xInterruptNumber++ )\r
+ {\r
+ if( ulInterruptStatus & 0x01UL )\r
+ {\r
+ /* Clear the pending interrupt. */\r
+ XIntc_mAckIntr( pxInterruptController->BaseAddress, ulInterruptMask );\r
+\r
+ /* Call the registered handler. */\r
+ pxTable = &( pxInterruptController->HandlerTable[ xInterruptNumber ] );\r
+ pxTable->Handler( pxTable->CallBackRef );\r
+ }\r
+ \r
+ /* Check the next interrupt. */\r
+ ulInterruptMask <<= 0x01UL;\r
+ ulInterruptStatus >>= 0x01UL;\r
+\r
+ /* Have we serviced all interrupts? */\r
+ if( ulInterruptStatus == 0UL )\r
+ {\r
+ break;\r
+ }\r
+ }\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+void vPortSetupInterruptController( void )\r
+{\r
+extern void vPortISRWrapper( void );\r
+\r
+ /* Perform all library calls necessary to initialise the exception table\r
+ and interrupt controller. This assumes only one interrupt controller is in\r
+ use. */\r
+ XExc_mDisableExceptions( XEXC_NON_CRITICAL );\r
+ XExc_Init();\r
+\r
+ /* The library functions save the context - we then jump to a wrapper to\r
+ save the stack into the TCB. The wrapper then calls the handler defined\r
+ above. */\r
+ XExc_RegisterHandler( XEXC_ID_NON_CRITICAL_INT, ( XExceptionHandler ) vPortISRWrapper, NULL );\r
+ XIntc_Initialize( &xInterruptController, XPAR_XPS_INTC_0_DEVICE_ID );\r
+ XIntc_Start( &xInterruptController, XIN_REAL_MODE );\r
+}\r
+/*-----------------------------------------------------------*/\r
+\r
+portBASE_TYPE xPortInstallInterruptHandler( unsigned portCHAR ucInterruptID, XInterruptHandler pxHandler, void *pvCallBackRef )\r
+{\r
+portBASE_TYPE xReturn = pdFAIL;\r
+\r
+ /* This function is defined here so the scope of xInterruptController can\r
+ remain within this file. */\r
+\r
+ if( XST_SUCCESS == XIntc_Connect( &xInterruptController, ucInterruptID, pxHandler, pvCallBackRef ) )\r
+ {\r
+ XIntc_Enable( &xInterruptController, ucInterruptID );\r
+ xReturn = pdPASS;\r
+ }\r
+\r
+ return xReturn; \r
+}\r
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