mirror of
https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-11-04 10:42:33 -05:00
Before updating version numbers.
This commit is contained in:
Richard Barry
parent
df711a4a65
commit
3dfbb349ca
2610 changed files with 719427 additions and 0 deletions
253
20080325/Source/portable/GCC/PPC405_Xilinx/port.c
Normal file
253
20080325/Source/portable/GCC/PPC405_Xilinx/port.c
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@ -0,0 +1,253 @@
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/*
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FreeRTOS.org V4.7.2 - Copyright (C) 2003-2008 Richard Barry.
|
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|
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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.
|
||||
|
||||
***************************************************************************
|
||||
|
||||
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.
|
||||
|
||||
***************************************************************************
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*/
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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the PPC405 port.
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*----------------------------------------------------------*/
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/* Scheduler includes. */
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#include "FreeRTOS.h"
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#include "task.h"
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/* Library includes. */
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#include "xtime_l.h"
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#include "xintc.h"
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#include "xintc_i.h"
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/*-----------------------------------------------------------*/
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/* Definitions to set the initial MSR of each task. */
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#define portCRITICAL_INTERRUPT_ENABLE ( 1UL << 17UL )
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#define portEXTERNAL_INTERRUPT_ENABLE ( 1UL << 15UL )
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#define portMACHINE_CHECK_ENABLE ( 1UL << 12UL )
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#define portINITIAL_MSR ( portCRITICAL_INTERRUPT_ENABLE | portEXTERNAL_INTERRUPT_ENABLE | portMACHINE_CHECK_ENABLE )
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/*-----------------------------------------------------------*/
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/*
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* Setup the system timer to generate the tick interrupt.
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*/
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static void prvSetupTimerInterrupt( void );
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/*
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* The handler for the tick interrupt - defined in portasm.s.
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*/
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extern void vPortTickISR( void );
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/*
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* The handler for the yield function - defined in portasm.s.
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*/
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extern void vPortYield( void );
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/*
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* Function to start the scheduler running by starting the highest
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* priority task that has thus far been created.
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*/
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extern void vPortStartFirstTask( void );
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/*-----------------------------------------------------------*/
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/* Structure used to hold the state of the interrupt controller. */
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static XIntc xInterruptController;
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/*-----------------------------------------------------------*/
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/*
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* Initialise the stack of a task to look exactly as if the task had been
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* interrupted.
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*
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* See the header file portable.h.
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*/
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portSTACK_TYPE *pxPortInitialiseStack( portSTACK_TYPE *pxTopOfStack, pdTASK_CODE pxCode, void *pvParameters )
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{
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/* Place a known value at the bottom of the stack for debugging. */
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*pxTopOfStack = 0xDEADBEEF;
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*pxTopOfStack--;
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/* EABI stack frame. */
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pxTopOfStack -= 28; /* R31 to R4 inclusive. */
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/* Parameters in R3. */
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*pxTopOfStack = ( portSTACK_TYPE ) pvParameters;
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pxTopOfStack--;
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*pxTopOfStack = 0x02020202UL; /* R2. */
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pxTopOfStack--;
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/* R1 is the stack pointer so is omitted. */
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*pxTopOfStack = 0x10000001UL;; /* R0. */
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pxTopOfStack--;
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*pxTopOfStack = 0x00000000UL; /* USPRG0. */
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pxTopOfStack--;
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*pxTopOfStack = 0x00000000UL; /* CR. */
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pxTopOfStack--;
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*pxTopOfStack = 0x00000000UL; /* XER. */
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pxTopOfStack--;
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*pxTopOfStack = 0x00000000UL; /* CTR. */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) vPortEndScheduler; /* LR. */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) pxCode; /* SRR0. */
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pxTopOfStack--;
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*pxTopOfStack = portINITIAL_MSR;/* SRR1. */
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pxTopOfStack--;
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*pxTopOfStack = ( portSTACK_TYPE ) vPortEndScheduler;/* Next LR. */
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pxTopOfStack--;
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*pxTopOfStack = 0x00000000UL;;/* Backchain. */
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xPortStartScheduler( void )
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{
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prvSetupTimerInterrupt();
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XExc_RegisterHandler( XEXC_ID_SYSTEM_CALL, ( XExceptionHandler ) vPortYield, ( void * ) 0 );
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vPortStartFirstTask();
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/* Should not get here as the tasks are now running! */
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return pdFALSE;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void )
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{
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/* Not implemented. */
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for( ;; );
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}
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/*-----------------------------------------------------------*/
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/*
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* Hardware initialisation to generate the RTOS tick.
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*/
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static void prvSetupTimerInterrupt( void )
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{
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const unsigned portLONG ulInterval = ( ( configCPU_CLOCK_HZ / configTICK_RATE_HZ ) - 1UL );
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XTime_PITClearInterrupt();
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XTime_FITClearInterrupt();
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XTime_WDTClearInterrupt();
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XTime_WDTDisableInterrupt();
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XTime_FITDisableInterrupt();
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XExc_RegisterHandler( XEXC_ID_PIT_INT, ( XExceptionHandler ) vPortTickISR, ( void * ) 0 );
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XTime_PITEnableAutoReload();
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XTime_PITSetInterval( ulInterval );
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XTime_PITEnableInterrupt();
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}
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/*-----------------------------------------------------------*/
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void vPortISRHandler( void *vNullDoNotUse )
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{
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unsigned portLONG ulInterruptStatus, ulInterruptMask = 1UL;
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portBASE_TYPE xInterruptNumber;
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XIntc_Config *pxInterruptController;
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XIntc_VectorTableEntry *pxTable;
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/* Get the configuration by using the device ID - in this case it is
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assumed that only one interrupt controller is being used. */
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pxInterruptController = &XIntc_ConfigTable[ XPAR_OPB_INTC_0_DEVICE_ID ];
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/* Which interrupts are pending? */
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ulInterruptStatus = XIntc_mGetIntrStatus( pxInterruptController->BaseAddress );
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for( xInterruptNumber = 0; xInterruptNumber < XPAR_INTC_MAX_NUM_INTR_INPUTS; xInterruptNumber++ )
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{
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if( ulInterruptStatus & 0x01UL )
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{
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/* Clear the pending interrupt. */
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XIntc_mAckIntr( pxInterruptController->BaseAddress, ulInterruptMask );
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/* Call the registered handler. */
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pxTable = &( pxInterruptController->HandlerTable[ xInterruptNumber ] );
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pxTable->Handler( pxTable->CallBackRef );
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}
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/* Check the next interrupt. */
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ulInterruptMask <<= 0x01UL;
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ulInterruptStatus >>= 0x01UL;
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/* Have we serviced all interrupts? */
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if( ulInterruptStatus == 0UL )
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{
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break;
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}
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}
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}
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/*-----------------------------------------------------------*/
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void vPortSetupInterruptController( void )
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{
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extern void vPortISRWrapper( void );
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/* Perform all library calls necessary to initialise the exception table
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and interrupt controller. This assumes only one interrupt controller is in
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use. */
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XExc_mDisableExceptions( XEXC_NON_CRITICAL );
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XExc_Init();
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/* The library functions save the context - we then jump to a wrapper to
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save the stack into the TCB. The wrapper then calls the handler defined
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above. */
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XExc_RegisterHandler( XEXC_ID_NON_CRITICAL_INT, ( XExceptionHandler ) vPortISRWrapper, NULL );
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XIntc_Initialize( &xInterruptController, XPAR_OPB_INTC_0_DEVICE_ID );
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XIntc_Start( &xInterruptController, XIN_REAL_MODE );
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xPortInstallInterruptHandler( unsigned portCHAR ucInterruptID, XInterruptHandler pxHandler, void *pvCallBackRef )
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{
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portBASE_TYPE xReturn = pdFAIL;
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/* This function is defined here so the scope of xInterruptController can
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remain within this file. */
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if( XST_SUCCESS == XIntc_Connect( &xInterruptController, ucInterruptID, pxHandler, pvCallBackRef ) )
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{
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XIntc_Enable( &xInterruptController, ucInterruptID );
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xReturn = pdPASS;
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}
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return xReturn;
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}
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148
20080325/Source/portable/GCC/PPC405_Xilinx/portasm.S
Normal file
148
20080325/Source/portable/GCC/PPC405_Xilinx/portasm.S
Normal file
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@ -0,0 +1,148 @@
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#include "FreeRTOSConfig.h"
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.extern pxCurrentTCB
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.extern vTaskSwitchContext
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.extern vTaskIncrementTick
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.extern vPortISRHandler
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.global vPortStartFirstTask
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.global vPortYield
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.global vPortTickISR
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.global vPortISRWrapper
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.set BChainField, 0
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.set NextLRField, BChainField + 4
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.set MSRField, NextLRField + 4
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.set PCField, MSRField + 4
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.set LRField, PCField + 4
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.set CTRField, LRField + 4
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.set XERField, CTRField + 4
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.set CRField, XERField + 4
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.set USPRG0Field, CRField + 4
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.set r0Field, USPRG0Field + 4
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.set r2Field, r0Field + 4
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.set r3r31Field, r2Field + 4
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.set IFrameSize, r3r31Field + ( ( 31 - 3 ) + 1 ) * 4
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.macro portSAVE_STACK_POINTER_AND_LR
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/* Get the address of the TCB. */
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xor R0, R0, R0
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addis R2, R0, pxCurrentTCB@ha
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lwz R2, pxCurrentTCB@l( R2 )
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/* Store the stack pointer into the TCB */
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stw SP, 0( R2 )
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/* Save the link register */
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stwu R1, -24( R1 )
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mflr R0
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stw R31, 20( R1 )
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stw R0, 28( R1 )
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mr R31, r1
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.endm
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|
||||
.macro portRESTORE_STACK_POINTER_AND_LR
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/* Restore the link register */
|
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lwz R11, 0( R1 )
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lwz R0, 4( R11 )
|
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mtlr R0
|
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lwz R31, -4( R11 )
|
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mr R1, R11
|
||||
|
||||
/* Get the address of the TCB. */
|
||||
xor R0, R0, R0
|
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addis SP, R0, pxCurrentTCB@ha
|
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lwz SP, pxCurrentTCB@l( R1 )
|
||||
|
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/* Get the task stack pointer from the TCB. */
|
||||
lwz SP, 0( SP )
|
||||
|
||||
.endm
|
||||
|
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|
||||
vPortStartFirstTask:
|
||||
|
||||
/* Get the address of the TCB. */
|
||||
xor R0, R0, R0
|
||||
addis SP, R0, pxCurrentTCB@ha
|
||||
lwz SP, pxCurrentTCB@l( SP )
|
||||
|
||||
/* Get the task stack pointer from the TCB. */
|
||||
lwz SP, 0( SP )
|
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|
||||
/* Restore MSR register to SRR1. */
|
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lwz R0, MSRField(R1)
|
||||
mtsrr1 R0
|
||||
|
||||
/* Restore current PC location to SRR0. */
|
||||
lwz R0, PCField(R1)
|
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mtsrr0 R0
|
||||
|
||||
/* Save USPRG0 register */
|
||||
lwz R0, USPRG0Field(R1)
|
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mtspr 0x100,R0
|
||||
|
||||
/* Restore Condition register */
|
||||
lwz R0, CRField(R1)
|
||||
mtcr R0
|
||||
|
||||
/* Restore Fixed Point Exception register */
|
||||
lwz R0, XERField(R1)
|
||||
mtxer R0
|
||||
|
||||
/* Restore Counter register */
|
||||
lwz R0, CTRField(R1)
|
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mtctr R0
|
||||
|
||||
/* Restore Link register */
|
||||
lwz R0, LRField(R1)
|
||||
mtlr R0
|
||||
|
||||
/* Restore remaining GPR registers. */
|
||||
lmw R3,r3r31Field(R1)
|
||||
|
||||
/* Restore r0 and r2. */
|
||||
lwz R0, r0Field(R1)
|
||||
lwz R2, r2Field(R1)
|
||||
|
||||
/* Remove frame from stack */
|
||||
addi R1,R1,IFrameSize
|
||||
|
||||
/* Return into the first task */
|
||||
rfi
|
||||
|
||||
|
||||
|
||||
vPortYield:
|
||||
|
||||
portSAVE_STACK_POINTER_AND_LR
|
||||
bl vTaskSwitchContext
|
||||
portRESTORE_STACK_POINTER_AND_LR
|
||||
blr
|
||||
|
||||
vPortTickISR:
|
||||
|
||||
portSAVE_STACK_POINTER_AND_LR
|
||||
bl vTaskIncrementTick
|
||||
|
||||
#if configUSE_PREEMPTION == 1
|
||||
bl vTaskSwitchContext
|
||||
#endif
|
||||
|
||||
/* Clear the interrupt */
|
||||
lis R0, 2048
|
||||
mttsr R0
|
||||
|
||||
portRESTORE_STACK_POINTER_AND_LR
|
||||
blr
|
||||
|
||||
vPortISRWrapper:
|
||||
|
||||
portSAVE_STACK_POINTER_AND_LR
|
||||
bl vPortISRHandler
|
||||
portRESTORE_STACK_POINTER_AND_LR
|
||||
blr
|
||||
125
20080325/Source/portable/GCC/PPC405_Xilinx/portmacro.h
Normal file
125
20080325/Source/portable/GCC/PPC405_Xilinx/portmacro.h
Normal file
|
|
@ -0,0 +1,125 @@
|
|||
/*
|
||||
FreeRTOS.org V4.7.1 - 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.
|
||||
|
||||
***************************************************************************
|
||||
|
||||
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
|
||||
|
||||
#include "xexception_l.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 portLONG
|
||||
#define portBASE_TYPE portLONG
|
||||
|
||||
#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
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* This port uses the critical nesting count from the TCB rather than
|
||||
maintaining a separate value and then saving this value in the task stack. */
|
||||
#define portCRITICAL_NESTING_IN_TCB 1
|
||||
|
||||
/* Interrupt control macros. */
|
||||
#define portDISABLE_INTERRUPTS() XExc_mDisableExceptions( XEXC_NON_CRITICAL );
|
||||
#define portENABLE_INTERRUPTS() XExc_mEnableExceptions( XEXC_NON_CRITICAL );
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Critical section macros. */
|
||||
void vTaskEnterCritical( void );
|
||||
void vTaskExitCritical( void );
|
||||
#define portENTER_CRITICAL() vTaskEnterCritical()
|
||||
#define portEXIT_CRITICAL() vTaskExitCritical()
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task utilities. */
|
||||
void vPortYield( void );
|
||||
#define portYIELD() asm volatile ( "SC \n\t NOP" )
|
||||
#define portYIELD_FROM_ISR() vTaskSwitchContext()
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Hardware specifics. */
|
||||
#define portBYTE_ALIGNMENT 8
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_RATE_MS ( ( portTickType ) 1000 / configTICK_RATE_HZ )
|
||||
#define portNOP() asm volatile ( "NOP" )
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Task function macros as described on the FreeRTOS.org WEB site. */
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) void vFunction( void *pvParameters )
|
||||
|
||||
/* Port specific interrupt handling functions. */
|
||||
void vPortSetupInterruptController( void );
|
||||
portBASE_TYPE xPortInstallInterruptHandler( unsigned portCHAR ucInterruptID, XInterruptHandler pxHandler, void *pvCallBackRef );
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
||||
Loading…
Add table
Add a link
Reference in a new issue