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Migrated RL78/IAR port to EWRL78v3+ (#461)

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Co-authored-by: Cobus van Eeden <35851496+cobusve@users.noreply.github.com>
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Felipe Torrezan 2022-02-24 18:04:46 +01:00 committed by GitHub
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commit 4539e1c574
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5 changed files with 299 additions and 371 deletions
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84
portable/IAR/RL78/ISR_Support.h
View file

@ -1,84 +0,0 @@
;/*
; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
; *
; * SPDX-License-Identifier: MIT
; *
; * Permission is hereby granted, free of charge, to any person obtaining a copy of
; * this software and associated documentation files (the "Software"), to deal in
; * the Software without restriction, including without limitation the rights to
; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
; * the Software, and to permit persons to whom the Software is furnished to do so,
; * subject to the following conditions:
; *
; * The above copyright notice and this permission notice shall be included in all
; * copies or substantial portions of the Software.
; *
; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
; *
; * https://www.FreeRTOS.org
; * https://github.com/FreeRTOS
; *
; */
#include "FreeRTOSConfig.h"
; Variables used by scheduler
;------------------------------------------------------------------------------
EXTERN pxCurrentTCB
EXTERN usCriticalNesting
;------------------------------------------------------------------------------
; portSAVE_CONTEXT MACRO
; Saves the context of the general purpose registers, CS and ES (only in far
; memory mode) registers the usCriticalNesting Value and the Stack Pointer
; of the active Task onto the task stack
;------------------------------------------------------------------------------
portSAVE_CONTEXT MACRO
PUSH AX ; Save AX Register to stack.
PUSH HL
MOV A, CS ; Save CS register.
XCH A, X
MOV A, ES ; Save ES register.
PUSH AX
PUSH DE ; Save the remaining general purpose registers.
PUSH BC
MOVW AX, usCriticalNesting ; Save the usCriticalNesting value.
PUSH AX
MOVW AX, pxCurrentTCB ; Save the Stack pointer.
MOVW HL, AX
MOVW AX, SP
MOVW [HL], AX
ENDM
;------------------------------------------------------------------------------
;------------------------------------------------------------------------------
; portRESTORE_CONTEXT MACRO
; Restores the task Stack Pointer then use this to restore usCriticalNesting,
; general purpose registers and the CS and ES (only in far memory mode)
; of the selected task from the task stack
;------------------------------------------------------------------------------
portRESTORE_CONTEXT MACRO
MOVW AX, pxCurrentTCB ; Restore the Stack pointer.
MOVW HL, AX
MOVW AX, [HL]
MOVW SP, AX
POP AX ; Restore usCriticalNesting value.
MOVW usCriticalNesting, AX
POP BC ; Restore the necessary general purpose registers.
POP DE
POP AX ; Restore the ES register.
MOV ES, A
XCH A, X ; Restore the CS register.
MOV CS, A
POP HL ; Restore general purpose register HL.
POP AX ; Restore AX.
ENDM
;------------------------------------------------------------------------------

105
portable/IAR/RL78/port.c
View file

@ -65,21 +65,13 @@ volatile uint16_t usCriticalNesting = portINITIAL_CRITICAL_NESTING;
/*-----------------------------------------------------------*/
/*
* Sets up the periodic ISR used for the RTOS tick using the interval timer.
* The application writer can define configSETUP_TICK_INTERRUPT() (in
* FreeRTOSConfig.h) such that their own tick interrupt configuration is used
* in place of prvSetupTimerInterrupt().
* Sets up the periodic ISR used for the RTOS tick.
*/
static void prvSetupTimerInterrupt( void );
#ifndef configSETUP_TICK_INTERRUPT
/* The user has not provided their own tick interrupt configuration so use
the definition in this file (which uses the interval timer). */
#define configSETUP_TICK_INTERRUPT() prvSetupTimerInterrupt()
#endif /* configSETUP_TICK_INTERRUPT */
extern void vApplicationSetupTimerInterrupt( void );
/*
* Defined in portasm.s87, this function starts the scheduler by loading the
* context of the first task to run.
* Starts the scheduler by loading the context of the first Task to run.
* (implemented in portasm.s).
*/
extern void vPortStartFirstTask( void );
@ -106,28 +98,26 @@ uint32_t *pulLocal;
#if __DATA_MODEL__ == __DATA_MODEL_FAR__
{
/* Parameters are passed in on the stack, and written using a 32-bit value
hence a space is left for the second two bytes. */
/* Far pointer parameters are passed using the A:DE registers (24-bit).
Although they are stored in memory as a 32-bit value. Hence decrement
the stack pointer, so 2 bytes are left for the contents of A, before
storing the pvParameters value. */
pxTopOfStack--;
/* Write in the parameter value. */
pulLocal = ( uint32_t * ) pxTopOfStack;
*pulLocal = ( uint32_t ) pvParameters;
pxTopOfStack--;
/* The return address, leaving space for the first two bytes of the
32-bit value. See the comments above the prvTaskExitError() prototype
at the top of this file. */
/* The return address is a 32-bit value. So decrement the stack pointer
in order to make extra room needed to store the correct value. See the
comments above the prvTaskExitError() prototype at the top of this file. */
pxTopOfStack--;
pulLocal = ( uint32_t * ) pxTopOfStack;
*pulLocal = ( uint32_t ) prvTaskExitError;
pxTopOfStack--;
/* The start address / PSW value is also written in as a 32-bit value,
so leave a space for the second two bytes. */
/* The task function start address combined with the PSW is also stored
as a 32-bit value. So leave a space for the second two bytes. */
pxTopOfStack--;
/* Task function start address combined with the PSW. */
pulLocal = ( uint32_t * ) pxTopOfStack;
*pulLocal = ( ( ( uint32_t ) pxCode ) | ( portPSW << 24UL ) );
pxTopOfStack--;
@ -179,8 +169,8 @@ uint32_t *pulLocal;
first starts. */
*pxTopOfStack = ( StackType_t ) portNO_CRITICAL_SECTION_NESTING;
/* Return a pointer to the top of the stack that has been generated so it
can be stored in the task control block for the task. */
/* Return a pointer to the top of the stack that has been generated so
it can be stored in the task control block for the task. */
return pxTopOfStack;
}
/*-----------------------------------------------------------*/
@ -203,18 +193,12 @@ BaseType_t xPortStartScheduler( void )
{
/* Setup the hardware to generate the tick. Interrupts are disabled when
this function is called. */
configSETUP_TICK_INTERRUPT();
vApplicationSetupTimerInterrupt();
/* Restore the context of the first task that is going to run. */
vPortStartFirstTask();
/* Execution should not reach here as the tasks are now running!
prvSetupTimerInterrupt() is called here to prevent the compiler outputting
a warning about a statically declared function not being referenced in the
case that the application writer has provided their own tick interrupt
configuration routine (and defined configSETUP_TICK_INTERRUPT() such that
their own routine will be called in place of prvSetupTimerInterrupt()). */
prvSetupTimerInterrupt();
/* Execution should not reach here as the tasks are now running! */
return pdTRUE;
}
/*-----------------------------------------------------------*/
@ -224,58 +208,3 @@ void vPortEndScheduler( void )
/* It is unlikely that the RL78 port will get stopped. */
}
/*-----------------------------------------------------------*/
static void prvSetupTimerInterrupt( void )
{
const uint16_t usClockHz = 15000UL; /* Internal clock. */
const uint16_t usCompareMatch = ( usClockHz / configTICK_RATE_HZ ) + 1UL;
/* Use the internal 15K clock. */
OSMC = ( uint8_t ) 0x16;
#ifdef RTCEN
{
/* Supply the interval timer clock. */
RTCEN = ( uint8_t ) 1U;
/* Disable INTIT interrupt. */
ITMK = ( uint8_t ) 1;
/* Disable ITMC operation. */
ITMC = ( uint8_t ) 0x0000;
/* Clear INIT interrupt. */
ITIF = ( uint8_t ) 0;
/* Set interval and enable interrupt operation. */
ITMC = usCompareMatch | 0x8000U;
/* Enable INTIT interrupt. */
ITMK = ( uint8_t ) 0;
}
#endif
#ifdef TMKAEN
{
/* Supply the interval timer clock. */
TMKAEN = ( uint8_t ) 1U;
/* Disable INTIT interrupt. */
TMKAMK = ( uint8_t ) 1;
/* Disable ITMC operation. */
ITMC = ( uint8_t ) 0x0000;
/* Clear INIT interrupt. */
TMKAIF = ( uint8_t ) 0;
/* Set interval and enable interrupt operation. */
ITMC = usCompareMatch | 0x8000U;
/* Enable INTIT interrupt. */
TMKAMK = ( uint8_t ) 0;
}
#endif
}
/*-----------------------------------------------------------*/

84
portable/IAR/RL78/portasm.s Normal file
View file

@ -0,0 +1,84 @@
;/*
; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
; *
; * SPDX-License-Identifier: MIT
; *
; * Permission is hereby granted, free of charge, to any person obtaining a copy of
; * this software and associated documentation files (the "Software"), to deal in
; * the Software without restriction, including without limitation the rights to
; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
; * the Software, and to permit persons to whom the Software is furnished to do so,
; * subject to the following conditions:
; *
; * The above copyright notice and this permission notice shall be included in all
; * copies or substantial portions of the Software.
; *
; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
; *
; * https://www.FreeRTOS.org
; * https://github.com/FreeRTOS
; *
; */
#include "portmacro.h"
EXTERN _vTaskSwitchContext
EXTERN _xTaskIncrementTick
EXTERN _interrupt_vector_table
PUBLIC _vPortYield
PUBLIC _vPortStartFirstTask
PUBLIC _vPortTickISR
#if !defined(__IASMRL78__) || (__VER__ < 310)
#error "This port requires the IAR Assembler for RL78 version 3.10 or later."
#endif
;-------------------------------------------------------------------------------
; FreeRTOS yield handler. This is installed as the BRK software interrupt
; handler.
;-------------------------------------------------------------------------------
SECTION `.text`:CODE:ROOT(1)
_vPortYield:
portSAVE_CONTEXT ; Save the context of the current task.
RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
portRESTORE_CONTEXT ; Restore the context of the next task to run.
RETB
;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
; Starts the scheduler by restoring the context of the task that will execute
; first.
;-------------------------------------------------------------------------------
SECTION `.text`:CODE:ROOT(1)
_vPortStartFirstTask:
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
RETI ; An interrupt stack frame is used so the
; task is started using a RETI instruction.
;-------------------------------------------------------------------------------
;-------------------------------------------------------------------------------
; FreeRTOS Timer Tick handler.
; This is installed as the interval timer interrupt handler.
;-------------------------------------------------------------------------------
SECTION `.text`:CODE:ROOT(1)
_vPortTickISR:
portSAVE_CONTEXT ; Save the context of the current task.
RCALL (_xTaskIncrementTick) ; Call the timer tick function.
CMPW AX, #0x00
SKZ
RCALL (_vTaskSwitchContext) ; Call the scheduler to select the next task.
portRESTORE_CONTEXT ; Restore the context of the next task to run.
RETI
;-------------------------------------------------------------------------------
END

84
portable/IAR/RL78/portasm.s87
View file

@ -1,84 +0,0 @@
;/*
; * FreeRTOS Kernel <DEVELOPMENT BRANCH>
; * Copyright (C) 2021 Amazon.com, Inc. or its affiliates. All Rights Reserved.
; *
; * SPDX-License-Identifier: MIT
; *
; * Permission is hereby granted, free of charge, to any person obtaining a copy of
; * this software and associated documentation files (the "Software"), to deal in
; * the Software without restriction, including without limitation the rights to
; * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
; * the Software, and to permit persons to whom the Software is furnished to do so,
; * subject to the following conditions:
; *
; * The above copyright notice and this permission notice shall be included in all
; * copies or substantial portions of the Software.
; *
; * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
; * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
; * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
; * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
; * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
; * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
; *
; * https://www.FreeRTOS.org
; * https://github.com/FreeRTOS
; *
; */
#include "ISR_Support.h"
#define CS 0xFFFFC
#define ES 0xFFFFD
PUBLIC vPortYield
PUBLIC vPortStartFirstTask
PUBLIC vPortTickISR
EXTERN vTaskSwitchContext
EXTERN xTaskIncrementTick
; FreeRTOS yield handler. This is installed as the BRK software interrupt
; handler.
RSEG CODE:CODE
vPortYield:
portSAVE_CONTEXT ; Save the context of the current task.
call vTaskSwitchContext ; Call the scheduler to select the next task.
portRESTORE_CONTEXT ; Restore the context of the next task to run.
retb
; Starts the scheduler by restoring the context of the task that will execute
; first.
RSEG CODE:CODE
vPortStartFirstTask:
portRESTORE_CONTEXT ; Restore the context of whichever task the ...
reti ; An interrupt stack frame is used so the task
; is started using a RETI instruction.
; FreeRTOS tick handler. This is installed as the interval timer interrupt
; handler.
RSEG CODE:CODE
vPortTickISR:
portSAVE_CONTEXT ; Save the context of the current task.
call xTaskIncrementTick ; Call the timer tick function.
cmpw ax, #0x00
skz
call vTaskSwitchContext ; Call the scheduler to select the next task.
portRESTORE_CONTEXT ; Restore the context of the next task to run.
reti
; Install the interrupt handlers
COMMON INTVEC:CODE:ROOT(1)
ORG configTICK_VECTOR
DW vPortTickISR
COMMON INTVEC:CODE:ROOT(1)
ORG 126
DW vPortYield
END

89
portable/IAR/RL78/portmacro.h
View file

@ -29,6 +29,8 @@
#ifndef PORTMACRO_H
#define PORTMACRO_H
#ifdef __IAR_SYSTEMS_ICC__
#ifdef __cplusplus
extern "C" {
#endif
@ -108,7 +110,7 @@ extern volatile uint16_t usCriticalNesting; \
\
if( usCriticalNesting > portNO_CRITICAL_SECTION_NESTING ) \
{ \
/* Decrement the nesting count as we are leaving a critical section. */ \
/* Decrement the nesting count when leaving a critical section. */ \
usCriticalNesting--; \
\
/* If the nesting level has reached zero then interrupts should be */ \
@ -122,9 +124,9 @@ extern volatile uint16_t usCriticalNesting; \
/*-----------------------------------------------------------*/
/* Task utilities. */
#define portNOP() __asm( "NOP" )
#define portYIELD() __asm( "BRK" )
#define portYIELD_FROM_ISR( xHigherPriorityTaskWoken ) do { if( xHigherPriorityTaskWoken ) vTaskSwitchContext(); } while( 0 )
#define portNOP() __asm( "NOP" )
/*-----------------------------------------------------------*/
/* Hardwware specifics. */
@ -139,7 +141,88 @@ extern volatile uint16_t usCriticalNesting; \
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* __IAR_SYSTEMS_ICC__ */
;//-----------------------------------------------------------------------------
;// The macros below are processed for asm sources which include portmacro.h.
;//-----------------------------------------------------------------------------
#ifdef __IAR_SYSTEMS_ASM__
;/* Functions and variables used by this file. */
;//-----------------------------------------------------------------------------
EXTERN _pxCurrentTCB
EXTERN _usCriticalNesting
;/* Macro used to declutter calls, depends on the selected code model. */
;//-----------------------------------------------------------------------------
#if __CODE_MODEL__ == __CODE_MODEL_FAR__
#define RCALL(X) CALL F:X
#else
#define RCALL(X) CALL X
#endif
#endif /* PORTMACRO_H */
;/*-----------------------------------------------------------------------------
; * portSAVE_CONTEXT MACRO
; * Saves the context of the general purpose registers, CS and ES (only in __far
; * memory mode) registers the _usCriticalNesting value and the Stack Pointer
; * of the active Task onto the task stack.
; *---------------------------------------------------------------------------*/
portSAVE_CONTEXT MACRO
PUSH AX ; // Save AX Register to stack.
PUSH HL
#if __CODE_MODEL__ == __CODE_MODEL_FAR__
MOV A, CS ; // Save CS register.
XCH A, X
MOV A, ES ; // Save ES register.
PUSH AX
#else
MOV A, CS ; // Save CS register.
PUSH AX
#endif
PUSH DE ; // Save the remaining general purpose registers.
PUSH BC
MOVW AX, _usCriticalNesting ; // Save the _usCriticalNesting value.
PUSH AX
MOVW AX, _pxCurrentTCB ; // Save the Task stack pointer.
MOVW HL, AX
MOVW AX, SP
MOVW [HL], AX
ENDM
;//-----------------------------------------------------------------------------
;/*-----------------------------------------------------------------------------
; * portRESTORE_CONTEXT MACRO
; * Restores the task Stack Pointer then use this to restore _usCriticalNesting,
; * general purpose registers and the CS and ES (only in __far memory mode)
; * of the selected task from the task stack.
; *---------------------------------------------------------------------------*/
portRESTORE_CONTEXT MACRO
MOVW AX, _pxCurrentTCB ; // Restore the Task stack pointer.
MOVW HL, AX
MOVW AX, [HL]
MOVW SP, AX
POP AX ; // Restore _usCriticalNesting value.
MOVW _usCriticalNesting, AX
POP BC ; // Restore the necessary general purpose registers.
POP DE
#if __CODE_MODEL__ == __CODE_MODEL_FAR__
POP AX ; // Restore the ES register.
MOV ES, A
XCH A, X ; // Restore the CS register.
MOV CS, A
#else
POP AX
MOV CS, A ; // Restore CS register.
#endif
POP HL ; // Restore general purpose register HL.
POP AX ; // Restore AX.
ENDM
;//-----------------------------------------------------------------------------
#endif /* __IAR_SYSTEMS_ASM__ */
#endif /* PORTMACRO_H */