forked from epagris/FreeRTOS-Kernel
deprecating the mcf5235 port (#334)
This commit is contained in:
Joseph Julicher
GitHub
parent
f37bcd5c14
commit
736f2302ae
@ -1,285 +0,0 @@
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/*
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FreeRTOS V4.1.1 - Copyright (C) 2003-2006 Richard Barry.
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MCF5235 Port - Copyright (C) 2006 Christian Walter.
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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 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 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; 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, without being obliged to provide
|
||||
the source code for any proprietary components. See the licensing section
|
||||
of https://www.FreeRTOS.org for full details of how and when the exception
|
||||
can be applied.
|
||||
|
||||
***************************************************************************
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||||
***************************************************************************
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||||
* *
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||||
* Get the FreeRTOS eBook! See https://www.FreeRTOS.org/Documentation *
|
||||
* *
|
||||
* This is a concise, step by step, 'hands on' guide that describes both *
|
||||
* general multitasking concepts and FreeRTOS specifics. It presents and *
|
||||
* explains numerous examples that are written using the FreeRTOS API. *
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||||
* Full source code for all the examples is provided in an accompanying *
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||||
* .zip file. *
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* *
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||||
***************************************************************************
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||||
***************************************************************************
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||||
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||||
Please ensure to read the configuration and relevant port sections of the
|
||||
online documentation.
|
||||
|
||||
https://www.FreeRTOS.org - Documentation, latest information, license and
|
||||
contact details.
|
||||
|
||||
https://www.highintegritysystems.com/safertos/ - A version that is
|
||||
certified for use in safety critical systems.
|
||||
|
||||
https://www.highintegritysystems.com/openrtos/ - Commercial support,
|
||||
development, porting, licensing and training services.
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*/
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#include <stdlib.h>
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#include "FreeRTOS.h"
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#include "FreeRTOSConfig.h"
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#include "task.h"
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/* ------------------------ Types ----------------------------------------- */
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typedef volatile uint32_t vuint32;
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typedef volatile uint16_t vuint16;
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typedef volatile uint8_t vuint8;
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/* ------------------------ Defines --------------------------------------- */
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#define portVECTOR_TABLE __RAMVEC
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#define portVECTOR_SYSCALL ( 32 + portTRAP_YIELD )
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#define portVECTOR_TIMER ( 64 + 36 )
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#define MCF_PIT_PRESCALER 512UL
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#define MCF_PIT_TIMER_TICKS ( FSYS_2 / MCF_PIT_PRESCALER )
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#define MCF_PIT_MODULUS_REGISTER(freq) ( MCF_PIT_TIMER_TICKS / ( freq ) - 1UL)
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#define MCF_PIT_PMR0 ( *( vuint16 * )( void * )( &__IPSBAR[ 0x150002 ] ) )
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#define MCF_PIT_PCSR0 ( *( vuint16 * )( void * )( &__IPSBAR[ 0x150000 ] ) )
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#define MCF_PIT_PCSR_PRE(x) ( ( ( x ) & 0x000F ) << 8 )
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#define MCF_PIT_PCSR_EN ( 0x0001 )
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#define MCF_PIT_PCSR_RLD ( 0x0002 )
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#define MCF_PIT_PCSR_PIF ( 0x0004 )
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#define MCF_PIT_PCSR_PIE ( 0x0008 )
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#define MCF_PIT_PCSR_OVW ( 0x0010 )
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#define MCF_INTC0_ICR36 ( *( vuint8 * )( void * )( &__IPSBAR[ 0x000C64 ] ) )
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#define MCF_INTC0_IMRH ( *( vuint32 * )( void * )( &__IPSBAR[ 0x000C08 ] ) )
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#define MCF_INTC0_IMRH_INT_MASK36 ( 0x00000010 )
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#define MCF_INTC0_IMRH_MASKALL ( 0x00000001 )
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#define MCF_INTC0_ICRn_IP(x) ( ( ( x ) & 0x07 ) << 0 )
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#define MCF_INTC0_ICRn_IL(x) ( ( ( x ) & 0x07 ) << 3 )
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#define portNO_CRITICAL_NESTING ( ( uint32_t ) 0 )
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#define portINITIAL_CRITICAL_NESTING ( ( uint32_t ) 10 )
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/* ------------------------ Static variables ------------------------------ */
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volatile uint32_t ulCriticalNesting = portINITIAL_CRITICAL_NESTING;
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/* ------------------------ Static functions ------------------------------ */
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#if configUSE_PREEMPTION == 0
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static void prvPortPreemptiveTick ( void ) __attribute__ ((interrupt_handler));
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#else
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static void prvPortPreemptiveTick ( void );
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#endif
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/* ------------------------ Start implementation -------------------------- */
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StackType_t *
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pxPortInitialiseStack( StackType_t * pxTopOfStack, TaskFunction_t pxCode,
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void *pvParameters )
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{
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/* Place the parameter on the stack in the expected location. */
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*pxTopOfStack = ( StackType_t ) pvParameters;
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pxTopOfStack--;
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/* Place dummy return address on stack. Tasks should never terminate so
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* we can set this to anything. */
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*pxTopOfStack = ( StackType_t ) 0;
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pxTopOfStack--;
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/* Create a Motorola Coldfire exception stack frame. First comes the return
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* address. */
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*pxTopOfStack = ( StackType_t ) pxCode;
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pxTopOfStack--;
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/* Format, fault-status, vector number for exception stack frame. Task
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* run in supervisor mode. */
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*pxTopOfStack = 0x40002000UL | ( portVECTOR_SYSCALL + 32 ) << 18;
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pxTopOfStack--;
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/* Set the initial critical section nesting counter to zero. This value
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* is used to restore the value of ulCriticalNesting. */
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*pxTopOfStack = 0;
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*pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA6; /* A6 / FP */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA5; /* A5 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA4; /* A4 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA3; /* A3 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA2; /* A2 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA1; /* A1 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xA0; /* A0 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD7; /* D7 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD6; /* D6 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD5; /* D5 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD4; /* D4 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD3; /* D3 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD2; /* D2 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD1; /* D1 */
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pxTopOfStack--;
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*pxTopOfStack = ( StackType_t ) 0xD0; /* D0 */
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return pxTopOfStack;
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}
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/*
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* Called by portYIELD() or taskYIELD() to manually force a context switch.
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*/
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static void
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prvPortYield( void )
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{
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asm volatile ( "move.w #0x2700, %sr\n\t" );
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#if _GCC_USES_FP == 1
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asm volatile ( "unlk %fp\n\t" );
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#endif
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/* Perform the context switch. First save the context of the current task. */
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portSAVE_CONTEXT( );
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/* Find the highest priority task that is ready to run. */
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vTaskSwitchContext( );
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/* Restore the context of the new task. */
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portRESTORE_CONTEXT( );
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}
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#if configUSE_PREEMPTION == 0
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/*
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* The ISR used for the scheduler tick depends on whether the cooperative or
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* the preemptive scheduler is being used.
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*/
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static void
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prvPortPreemptiveTick ( void )
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{
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/* The cooperative scheduler requires a normal IRQ service routine to
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* simply increment the system tick.
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*/
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xTaskIncrementTick();
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MCF_PIT_PCSR0 |= MCF_PIT_PCSR_PIF;
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}
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#else
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static void
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prvPortPreemptiveTick( void )
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{
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asm volatile ( "move.w #0x2700, %sr\n\t" );
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#if _GCC_USES_FP == 1
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asm volatile ( "unlk %fp\n\t" );
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#endif
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portSAVE_CONTEXT( );
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MCF_PIT_PCSR0 |= MCF_PIT_PCSR_PIF;
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if( xTaskIncrementTick() != pdFALSE )
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{
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vTaskSwitchContext( );
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}
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portRESTORE_CONTEXT( );
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}
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#endif
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void
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vPortEnterCritical()
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{
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/* FIXME: We should store the old IPL here - How are we supposed to do
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* this.
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*/
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( void )portSET_IPL( portIPL_MAX );
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/* Now interrupts are disabled ulCriticalNesting can be accessed
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* directly. Increment ulCriticalNesting to keep a count of how many times
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* portENTER_CRITICAL() has been called. */
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ulCriticalNesting++;
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}
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void
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vPortExitCritical()
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{
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if( ulCriticalNesting > portNO_CRITICAL_NESTING )
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{
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/* Decrement the nesting count as we are leaving a critical section. */
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ulCriticalNesting--;
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/* If the nesting level has reached zero then interrupts should be
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re-enabled. */
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if( ulCriticalNesting == portNO_CRITICAL_NESTING )
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{
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( void )portSET_IPL( 0 );
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}
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}
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}
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BaseType_t
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xPortStartScheduler( void )
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{
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extern void ( *portVECTOR_TABLE[ ] ) ( );
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/* Add entry in vector table for yield system call. */
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portVECTOR_TABLE[ portVECTOR_SYSCALL ] = prvPortYield;
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/* Add entry in vector table for periodic timer. */
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portVECTOR_TABLE[ portVECTOR_TIMER ] = prvPortPreemptiveTick;
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/* Configure the timer for the system clock. */
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if ( configTICK_RATE_HZ > 0)
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{
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/* Configure prescaler */
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MCF_PIT_PCSR0 = MCF_PIT_PCSR_PRE( 0x9 ) | MCF_PIT_PCSR_RLD | MCF_PIT_PCSR_OVW;
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/* Initialize the periodic timer interrupt. */
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MCF_PIT_PMR0 = MCF_PIT_MODULUS_REGISTER( configTICK_RATE_HZ );
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/* Configure interrupt priority and level and unmask interrupt. */
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MCF_INTC0_ICR36 = MCF_INTC0_ICRn_IL( 0x1 ) | MCF_INTC0_ICRn_IP( 0x1 );
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MCF_INTC0_IMRH &= ~( MCF_INTC0_IMRH_INT_MASK36 | MCF_INTC0_IMRH_MASKALL );
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/* Enable interrupts */
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MCF_PIT_PCSR0 |= MCF_PIT_PCSR_PIE | MCF_PIT_PCSR_EN | MCF_PIT_PCSR_PIF;
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}
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/* Restore the context of the first task that is going to run. */
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portRESTORE_CONTEXT( );
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/* Should not get here. */
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return pdTRUE;
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}
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void
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vPortEndScheduler( void )
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{
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}
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@ -1,183 +0,0 @@
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/*
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FreeRTOS V4.1.1 - Copyright (C) 2003-2006 Richard Barry.
|
||||
MCF5235 Port - Copyright (C) 2006 Christian Walter.
|
||||
|
||||
This file is part of the FreeRTOS distribution.
|
||||
|
||||
FreeRTOS 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 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; 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, without being obliged to provide
|
||||
the source code for any proprietary components. See the licensing section
|
||||
of https://www.FreeRTOS.org for full details of how and when the exception
|
||||
can be applied.
|
||||
|
||||
***************************************************************************
|
||||
***************************************************************************
|
||||
* *
|
||||
* Get the FreeRTOS eBook! See https://www.FreeRTOS.org/Documentation *
|
||||
* *
|
||||
* This is a concise, step by step, 'hands on' guide that describes both *
|
||||
* general multitasking concepts and FreeRTOS specifics. It presents and *
|
||||
* explains numerous examples that are written using the FreeRTOS API. *
|
||||
* Full source code for all the examples is provided in an accompanying *
|
||||
* .zip file. *
|
||||
* *
|
||||
***************************************************************************
|
||||
***************************************************************************
|
||||
|
||||
Please ensure to read the configuration and relevant port sections of the
|
||||
online documentation.
|
||||
|
||||
https://www.FreeRTOS.org - Documentation, latest information, license and
|
||||
contact details.
|
||||
|
||||
https://www.highintegritysystems.com/safertos/ - A version that is
|
||||
certified for use in safety critical systems.
|
||||
|
||||
https://www.highintegritysystems.com/openrtos/ - Commercial support,
|
||||
development, porting,
|
||||
licensing and training services.
|
||||
*/
|
||||
|
||||
#ifndef PORTMACRO_H
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#define PORTMACRO_H
|
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|
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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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/* ------------------------ Data types for Coldfire ----------------------- */
|
||||
#define portCHAR char
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#define portFLOAT float
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#define portDOUBLE double
|
||||
#define portLONG long
|
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#define portSHORT short
|
||||
#define portSTACK_TYPE unsigned int
|
||||
#define portBASE_TYPE int
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||||
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typedef portSTACK_TYPE StackType_t;
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typedef long BaseType_t;
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typedef unsigned long UBaseType_t;
|
||||
|
||||
#if( configUSE_16_BIT_TICKS == 1 )
|
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typedef uint16_t TickType_t;
|
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#define portMAX_DELAY ( TickType_t ) 0xffff
|
||||
#else
|
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typedef uint32_t TickType_t;
|
||||
#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
|
||||
#endif
|
||||
|
||||
/* ------------------------ Architecture specifics ------------------------ */
|
||||
#define portSTACK_GROWTH ( -1 )
|
||||
#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
|
||||
#define portBYTE_ALIGNMENT 4
|
||||
|
||||
#define portTRAP_YIELD 0 /* Trap 0 */
|
||||
#define portIPL_MAX 7 /* Only NMI interrupt 7 allowed. */
|
||||
|
||||
/* ------------------------ FreeRTOS macros for port ---------------------- */
|
||||
|
||||
/*
|
||||
* This function must be called when the current state of the active task
|
||||
* should be stored. It must be called immediately after exception
|
||||
* processing from the CPU, i.e. there exists a Coldfire exception frame at
|
||||
* the current position in the stack. The function reserves space on
|
||||
* the stack for the CPU registers and other task dependent values (e.g
|
||||
* ulCriticalNesting) and updates the top of the stack in the TCB.
|
||||
*/
|
||||
#define portSAVE_CONTEXT() \
|
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asm volatile ( /* reserve space for task state. */ \
|
||||
"lea.l (-64, %sp), %sp\n\t" \
|
||||
/* push data register %d0-%d7/%a0-%a6 on stack. */ \
|
||||
"movem.l %d0-%d7/%a0-%a6, (%sp)\n\t" \
|
||||
/* push ulCriticalNesting counter on stack. */ \
|
||||
"lea.l (60, %sp), %a0\n\t" \
|
||||
"move.l ulCriticalNesting, (%a0)\n\t" \
|
||||
/* set the new top of the stack in the TCB. */ \
|
||||
"move.l pxCurrentTCB, %a0\n\t" \
|
||||
"move.l %sp, (%a0)");
|
||||
|
||||
/*.
|
||||
* This function restores the current active and continues its execution.
|
||||
* It loads the current TCB and restores the processor registers, the
|
||||
* task dependent values (e.g ulCriticalNesting). Finally execution
|
||||
* is continued by executing an rte instruction.
|
||||
*/
|
||||
#define portRESTORE_CONTEXT() \
|
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asm volatile ( "move.l pxCurrentTCB, %sp\n\t" \
|
||||
"move.l (%sp), %sp\n\t" \
|
||||
/* stack pointer now points to the saved registers. */ \
|
||||
"movem.l (%sp), %d0-%d7/%a0-%a6\n\t" \
|
||||
/* restore ulCriticalNesting counter from stack. */ \
|
||||
"lea.l (%sp, 60), %sp\n\t" \
|
||||
"move.l (%sp)+, ulCriticalNesting\n\t" \
|
||||
/* stack pointer now points to exception frame. */ \
|
||||
"rte\n\t" );
|
||||
|
||||
#define portENTER_CRITICAL() \
|
||||
vPortEnterCritical();
|
||||
|
||||
#define portEXIT_CRITICAL() \
|
||||
vPortExitCritical();
|
||||
|
||||
#define portSET_IPL( xIPL ) \
|
||||
asm_set_ipl( xIPL )
|
||||
|
||||
#define portDISABLE_INTERRUPTS() \
|
||||
do { ( void )portSET_IPL( portIPL_MAX ); } while( 0 )
|
||||
#define portENABLE_INTERRUPTS() \
|
||||
do { ( void )portSET_IPL( 0 ); } while( 0 )
|
||||
|
||||
#define portYIELD() \
|
||||
asm volatile ( " trap %0\n\t" : : "i"(portTRAP_YIELD) )
|
||||
|
||||
#define portNOP() \
|
||||
asm volatile ( "nop\n\t" )
|
||||
|
||||
#define portENTER_SWITCHING_ISR() \
|
||||
asm volatile ( "move.w #0x2700, %sr" ); \
|
||||
/* Save the context of the interrupted task. */ \
|
||||
portSAVE_CONTEXT( ); \
|
||||
{
|
||||
|
||||
#define portEXIT_SWITCHING_ISR( SwitchRequired ) \
|
||||
/* If a switch is required we call vTaskSwitchContext(). */ \
|
||||
if( SwitchRequired ) \
|
||||
{ \
|
||||
vTaskSwitchContext( ); \
|
||||
} \
|
||||
} \
|
||||
portRESTORE_CONTEXT( );
|
||||
|
||||
/* ------------------------ Function prototypes --------------------------- */
|
||||
void vPortEnterCritical( void );
|
||||
void vPortExitCritical( void );
|
||||
int asm_set_ipl( uint32_t int uiNewIPL );
|
||||
|
||||
/* ------------------------ Compiler specifics ---------------------------- */
|
||||
#define portTASK_FUNCTION_PROTO( vFunction, pvParameters ) \
|
||||
void vFunction( void *pvParameters )
|
||||
|
||||
#define portTASK_FUNCTION( vFunction, pvParameters ) \
|
||||
void vFunction( void *pvParameters )
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
|
||||
2
portable/GCC/MCF5235/readme.md
Normal file
2
portable/GCC/MCF5235/readme.md
Normal file
@ -0,0 +1,2 @@
|
||||
The MCF5235 port is deprecated. The last FreeRTOS version that includes this port is 10.4.3.
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user