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https://github.com/FreeRTOS/FreeRTOS-Kernel.git
synced 2025-04-19 21:11:57 -04:00
Starting point for new port - a project that will build, but as yet no implementation.
This commit is contained in:
Richard Barry
parent
b2929dc036
commit
c8e98a097e
181
Source/portable/Renesas/RX600/port.c
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181
Source/portable/Renesas/RX600/port.c
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/*
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FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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* + New to FreeRTOS, *
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* + Wanting to learn FreeRTOS or multitasking in general quickly *
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* + Looking for basic training, *
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* + Wanting to improve your FreeRTOS skills and productivity *
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* *
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* then take a look at the FreeRTOS eBook *
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* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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* and 8pm GMT (although please allow up to 24 hours in case of *
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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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
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a 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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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. You should have received a copy of the GNU General Public
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License and the FreeRTOS license exception along with FreeRTOS; if not it
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can be viewed here: http://www.freertos.org/a00114.html and also obtained
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by writing to Richard Barry, contact details for whom are available on the
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FreeRTOS WEB site.
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1 tab == 4 spaces!
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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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/*-----------------------------------------------------------
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* Implementation of functions defined in portable.h for the SH2A 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 "string.h"
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/*-----------------------------------------------------------*/
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/* Dimensions the array into which the floating point context is saved.
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Allocate enough space for FPR0 to FPR15, FPUL and FPSCR, each of which is 4
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bytes big. If this number is changed then the 72 in portasm.src also needs
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changing. */
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#define portFLOP_REGISTERS_TO_STORE ( 18 )
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#define portFLOP_STORAGE_SIZE ( portFLOP_REGISTERS_TO_STORE * 4 )
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/*-----------------------------------------------------------*/
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/*
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*
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*/
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void vPortYield( void );
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/*
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* Function to start the first task executing.
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*/
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void vPortStartFirstTask( void );
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/*-----------------------------------------------------------*/
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/*
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* See header file for description.
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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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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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extern void vApplicationSetupTimerInterrupt( void );
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/* Call an application function to set up the timer that will generate the
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tick interrupt. This way the application can decide which peripheral to
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use. A demo application is provided to show a suitable example. */
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vApplicationSetupTimerInterrupt();
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/* Start the first task. This will only restore the standard registers and
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not the flop registers. This does not really matter though because the only
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flop register that is initialised to a particular value is fpscr, and it is
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only initialised to the current value, which will still be the current value
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when the first task starts executing. */
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//trapa( portSTART_SCHEDULER_TRAP_NO );
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/* Should not get here. */
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return pdFAIL;
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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 as there is nothing to return to. */
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}
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/*-----------------------------------------------------------*/
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void vPortYield( void )
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{
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}
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/*-----------------------------------------------------------*/
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portBASE_TYPE xPortUsesFloatingPoint( xTaskHandle xTask )
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{
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unsigned long *pulFlopBuffer;
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portBASE_TYPE xReturn;
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extern void * volatile pxCurrentTCB;
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/* This function tells the kernel that the task referenced by xTask is
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going to use the floating point registers and therefore requires the
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floating point registers saved as part of its context. */
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/* Passing NULL as xTask is used to indicate that the calling task is the
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subject task - so pxCurrentTCB is the task handle. */
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if( xTask == NULL )
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{
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xTask = ( xTaskHandle ) pxCurrentTCB;
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}
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/* Allocate a buffer large enough to hold all the flop registers. */
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pulFlopBuffer = ( unsigned long * ) pvPortMalloc( portFLOP_STORAGE_SIZE );
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if( pulFlopBuffer != NULL )
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{
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/* Start with the registers in a benign state. */
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memset( ( void * ) pulFlopBuffer, 0x00, portFLOP_STORAGE_SIZE );
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/* The first thing to get saved in the buffer is the FPSCR value -
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initialise this to the current FPSCR value. */
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//_RB_ *pulFlopBuffer = get_fpscr();
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/* Use the task tag to point to the flop buffer. Pass pointer to just
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above the buffer because the flop save routine uses a pre-decrement. */
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vTaskSetApplicationTaskTag( xTask, ( void * ) ( pulFlopBuffer + portFLOP_REGISTERS_TO_STORE ) );
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xReturn = pdPASS;
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}
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else
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{
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xReturn = pdFAIL;
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}
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return xReturn;
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}
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/*-----------------------------------------------------------*/
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void vPortSaveFlopRegisters( void *pvBuffer )
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{
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}
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/*-----------------------------------------------------------*/
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void vPortRestoreFlopRegisters( void *pvBuffer )
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{
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}
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/*-----------------------------------------------------------*/
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154
Source/portable/Renesas/RX600/portmacro.h
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154
Source/portable/Renesas/RX600/portmacro.h
Normal file
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@ -0,0 +1,154 @@
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/*
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FreeRTOS V6.0.5 - Copyright (C) 2010 Real Time Engineers Ltd.
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***************************************************************************
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* *
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* If you are: *
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* *
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|
* + New to FreeRTOS, *
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|
* + Wanting to learn FreeRTOS or multitasking in general quickly *
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|
* + Looking for basic training, *
|
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|
* + Wanting to improve your FreeRTOS skills and productivity *
|
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|
* *
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* then take a look at the FreeRTOS eBook *
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|
* *
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* "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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|
* http://www.FreeRTOS.org/Documentation *
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* *
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* A pdf reference manual is also available. Both are usually delivered *
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* to your inbox within 20 minutes to two hours when purchased between 8am *
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||||||
|
* and 8pm GMT (although please allow up to 24 hours in case of *
|
||||||
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* exceptional circumstances). Thank you for your support! *
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* *
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***************************************************************************
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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
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|
a 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.
|
||||||
|
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. You should have received a copy of the GNU General Public
|
||||||
|
License and the FreeRTOS license exception along with FreeRTOS; if not it
|
||||||
|
can be viewed here: http://www.freertos.org/a00114.html and also obtained
|
||||||
|
by writing to Richard Barry, contact details for whom are available on the
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|
FreeRTOS WEB site.
|
||||||
|
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||||||
|
1 tab == 4 spaces!
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||||||
|
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|
http://www.FreeRTOS.org - Documentation, latest information, license and
|
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|
contact details.
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||||||
|
|
||||||
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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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||||||
|
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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 - these are a bit legacy and not really used now, other than
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portSTACK_TYPE and portBASE_TYPE. */
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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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/* Hardware specifics. */
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#define portBYTE_ALIGNMENT 8
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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 portNOP() nop()
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#define portSTART_SCHEDULER_TRAP_NO ( 32 )
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#define portKERNEL_INTERRUPT_PRIORITY ( 1 )
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void vPortYield( void );
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#define portYIELD() vPortYield()
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extern void vTaskSwitchContext( void );
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#define portYIELD_FROM_ISR( x ) if( x != pdFALSE ) vTaskSwitchContext()
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/*
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* This function tells the kernel that the task referenced by xTask is going to
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* use the floating point registers and therefore requires the floating point
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* registers saved as part of its context.
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*/
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portBASE_TYPE xPortUsesFloatingPoint( void* xTask );
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/*
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* The flop save and restore functions are defined in portasm.src and called by
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* the trace "task switched in" and "trace task switched out" macros.
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*/
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void vPortSaveFlopRegisters( void *pulBuffer );
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void vPortRestoreFlopRegisters( void *pulBuffer );
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/*
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* pxTaskTag is used to point to the buffer into which the floating point
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* context should be saved. If pxTaskTag is NULL then the task does not use
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* a floating point context.
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*/
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#define traceTASK_SWITCHED_OUT() if( pxCurrentTCB->pxTaskTag != NULL ) vPortSaveFlopRegisters( pxCurrentTCB->pxTaskTag )
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#define traceTASK_SWITCHED_IN() if( pxCurrentTCB->pxTaskTag != NULL ) vPortRestoreFlopRegisters( pxCurrentTCB->pxTaskTag )
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/*
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* These macros should be called directly, but through the taskENTER_CRITICAL()
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* and taskEXIT_CRITICAL() macros.
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*/
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#define portENABLE_INTERRUPTS()
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#define portDISABLE_INTERRUPTS()
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/* Critical nesting counts are stored in the TCB. */
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#define portCRITICAL_NESTING_IN_TCB ( 1 )
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/* The critical nesting functions defined within tasks.c. */
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extern void vTaskEnterCritical( void );
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extern void vTaskExitCritical( void );
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#define portENTER_CRITICAL() vTaskEnterCritical();
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#define portEXIT_CRITICAL() vTaskExitCritical();
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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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#ifdef __cplusplus
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}
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#endif
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#endif /* PORTMACRO_H */
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