Moved proj up
This commit is contained in:
Timo Niemann
@@ -0,0 +1,227 @@
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/*
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* FreeRTOS Kernel V10.5.1+
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
|
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* 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.
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||||
*
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||||
* 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
|
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
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* IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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* https://www.FreeRTOS.org
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* https://github.com/FreeRTOS
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*
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*/
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#include <stdlib.h>
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#include "include/FreeRTOS.h"
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#if __SDCC
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#include "include/sdcc/task.h"
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#elif __SCCZ80
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#include "include/sccz80/task.h"
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#endif
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/*-----------------------------------------------------------*/
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/* We require the address of the pxCurrentTCB variable, but don't want to know
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any details of its type. */
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typedef void TCB_t;
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extern volatile TCB_t * volatile pxCurrentTCB;
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/*-----------------------------------------------------------*/
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/*
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* Macros to set up, restart (reload), and stop the PRT1 Timer used for
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* the System Tick.
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*/
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#define configTICK_RATE_HZ (256) /* Timer configured */
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#define configISR_ORG ASMPC /* ISR relocation */
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#define configISR_IVT 0xFFE6 /* PRT1 address */
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#define configSETUP_TIMER_INTERRUPT() \
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do{ \
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__asm__( \
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"EXTERN __CPU_CLOCK \n" \
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"EXTERN RLDR1L, RLDR1H \n" \
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"EXTERN TCR, TCR_TIE1, TCR_TDE1 \n" \
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"ld de,_timer_isr \n" \
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"ld hl,"string(configISR_IVT)" ; PRT1 address \n" \
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"ld (hl),e \n" \
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"inc hl \n" \
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"ld (hl),d \n" \
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"; we do configTICK_RATE_HZ ticks per second \n" \
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"ld hl,__CPU_CLOCK/"string(configTICK_RATE_HZ)"/20-1 \n" \
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"out0(RLDR1L),l \n" \
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"out0(RLDR1H),h \n" \
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"in0 a,(TCR) \n" \
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"or TCR_TIE1|TCR_TDE1 \n" \
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"out0 (TCR),a \n" \
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); \
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}while(0)
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#define configRESET_TIMER_INTERRUPT() \
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do{ \
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__asm__( \
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"EXTERN TCR, TMDR1L \n" \
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"in0 a,(TCR) \n" \
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"in0 a,(TMDR1L) \n" \
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); \
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}while(0)
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#define configSTOP_TIMER_INTERRUPT() \
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do{ \
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__asm__( \
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"EXTERN TCR, TCR_TIE1, TCR_TDE1 \n" \
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"; disable down counting and interrupts for PRT1\n" \
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"in0 a,(TCR) \n" \
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"xor TCR_TIE1|TCR_TDE1 \n" \
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"out0 (TCR),a \n" \
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); \
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}while(0)
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/*-----------------------------------------------------------*/
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/*
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* Perform hardware setup to enable ticks from Timer.
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*/
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static void prvSetupTimerInterrupt( void ) __preserves_regs(iyh,iyl);
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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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StackType_t *pxPortInitialiseStack( StackType_t *pxTopOfStack, TaskFunction_t pxCode, 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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/* Place the task return address on stack. Not used */
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*pxTopOfStack-- = ( StackType_t ) 0;
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/* The start of the task code will be popped off the stack last, so place
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it on first. */
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*pxTopOfStack-- = ( StackType_t ) pxCode;
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/* Now the registers. */
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*pxTopOfStack-- = ( StackType_t ) 0xAFAF; /* AF */
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*pxTopOfStack-- = ( StackType_t ) 0x0404; /* IF */
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*pxTopOfStack-- = ( StackType_t ) 0xBCBC; /* BC */
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*pxTopOfStack-- = ( StackType_t ) 0xDEDE; /* DE */
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*pxTopOfStack-- = ( StackType_t ) 0xEFEF; /* HL */
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*pxTopOfStack-- = ( StackType_t ) 0xFAFA; /* AF' */
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*pxTopOfStack-- = ( StackType_t ) 0xCBCB; /* BC' */
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*pxTopOfStack-- = ( StackType_t ) 0xEDED; /* DE' */
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*pxTopOfStack-- = ( StackType_t ) 0xFEFE; /* HL' */
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*pxTopOfStack-- = ( StackType_t ) 0xCEFA; /* IX */
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*pxTopOfStack = ( StackType_t ) 0xADDE; /* IY */
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return pxTopOfStack;
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}
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/*-----------------------------------------------------------*/
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BaseType_t xPortStartScheduler( void ) __preserves_regs(a,b,c,d,e,iyh,iyl) __naked
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{
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/* Setup the relevant timer hardware to generate the tick. */
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prvSetupTimerInterrupt();
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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 pdFALSE;
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}
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/*-----------------------------------------------------------*/
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void vPortEndScheduler( void ) __preserves_regs(b,c,d,e,h,l,iyh,iyl)
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{
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/*
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* It is unlikely that the Z80 port will get stopped.
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* If required simply disable the tick interrupt here.
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*/
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configSTOP_TIMER_INTERRUPT();
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}
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/*-----------------------------------------------------------*/
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/*
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* Manual context switch. The first thing we do is save the registers so we
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* can use a naked attribute. This is called by the application, so we don't have
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* to check which bank is loaded.
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*/
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void vPortYield( void ) __preserves_regs(a,b,c,d,e,h,l,iyh,iyl) __naked
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{
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portSAVE_CONTEXT();
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vTaskSwitchContext();
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portRESTORE_CONTEXT();
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}
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/*-----------------------------------------------------------*/
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/*
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* Manual context switch callable from ISRs. The first thing we do is save
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* the registers so we can use a naked attribute.
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*/
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void vPortYieldFromISR(void) __preserves_regs(a,b,c,d,e,h,l,iyh,iyl) __naked
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void vPortYieldFromISR(void)
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{
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portSAVE_CONTEXT_IN_ISR();
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vTaskSwitchContext();
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portRESTORE_CONTEXT_IN_ISR();
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}
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/*-----------------------------------------------------------*/
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/*
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* Initialize Timer (PRT1 for YAZ180, and SCZ180 HBIOS).
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*/
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void prvSetupTimerInterrupt( void ) __preserves_regs(iyh,iyl)
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{
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configSETUP_TIMER_INTERRUPT();
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}
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/*-----------------------------------------------------------*/
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void timer_isr(void) __preserves_regs(a,b,c,d,e,h,l,iyh,iyl) __naked
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{
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#if configUSE_PREEMPTION == 1
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/*
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* Tick ISR for preemptive scheduler. We can use a naked attribute as
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* the context is saved at the start of timer_isr(). The tick
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* count is incremented after the context is saved.
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*
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* Context switch function used by the tick. This must be identical to
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* vPortYield() from the call to vTaskSwitchContext() onwards. The only
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* difference from vPortYield() is the tick count is incremented as the
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* call comes from the tick ISR.
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*/
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portSAVE_CONTEXT_IN_ISR();
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configRESET_TIMER_INTERRUPT();
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xTaskIncrementTick();
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vTaskSwitchContext();
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portRESTORE_CONTEXT_IN_ISR();
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#else
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/*
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* Tick ISR for the cooperative scheduler. All this does is increment the
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* tick count. We don't need to switch context, this can only be done by
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* manual calls to taskYIELD();
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*/
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portSAVE_CONTEXT_IN_ISR();
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configRESET_TIMER_INTERRUPT();
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xTaskIncrementTick();
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portRESTORE_CONTEXT_IN_ISR();
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#endif
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} // configUSE_PREEMPTION
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+276
@@ -0,0 +1,276 @@
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/*
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* FreeRTOS Kernel V10.5.1+
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* Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
|
||||
*
|
||||
* 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
|
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*
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*/
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#ifndef PORTMACRO_H
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#define PORTMACRO_H
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/* *INDENT-OFF* */
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* *INDENT-ON* */
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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 Z80 (Z180, Z80N) hardware and SCCZ80 or SDCC 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. */
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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 int
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typedef uint16_t StackType_t;
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typedef int8_t BaseType_t;
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typedef uint8_t UBaseType_t;
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#if configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_16_BITS
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typedef uint16_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffff
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#elif ( configTICK_TYPE_WIDTH_IN_BITS == TICK_TYPE_WIDTH_32_BITS )
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typedef uint32_t TickType_t;
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#define portMAX_DELAY ( TickType_t ) 0xffffffffUL
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#else
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#error configTICK_TYPE_WIDTH_IN_BITS set to unsupported tick type width.
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#endif
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/*-----------------------------------------------------------*/
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/* General purpose stringify macros. */
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#define string(a) __string(a)
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#define __string(a) #a
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/*-----------------------------------------------------------*/
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/* Architecture specifics. */
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#define portSTACK_GROWTH ( -1 )
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#define portTICK_PERIOD_MS ( ( TickType_t ) 1000 / configTICK_RATE_HZ )
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#define portBYTE_ALIGNMENT 1
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/*-----------------------------------------------------------*/
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/* Critical section management. */
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#define portENTER_CRITICAL() \
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do{ \
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__asm__( \
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"ld a,i \n" \
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"di \n" \
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"push af \n" \
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); \
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}while(0)
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#define portEXIT_CRITICAL() \
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do{ \
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__asm__( \
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"pop af \n" \
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"; di ; unneeded \n" \
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"jp PO,ASMPC+4 \n" \
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"ei \n" \
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); \
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}while(0)
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#define portDISABLE_INTERRUPTS() \
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do{ \
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__asm__( \
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"di \n" \
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); \
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}while(0)
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#define portENABLE_INTERRUPTS() \
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do{ \
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__asm__( \
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"ei \n" \
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); \
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}while(0)
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#define portNOP() \
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do{ \
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__asm__( \
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"nop \n" \
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); \
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}while(0)
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/*
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* Macros to save all the registers, and save the stack pointer into the TCB.
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*
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* The first thing we do is save the flags then disable interrupts. This is to
|
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* guard our stack against having a context switch interrupt after we have already
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* pushed the registers onto the stack.
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*
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* The interrupts will have been disabled during the call to portSAVE_CONTEXT()
|
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* so we need not worry about reading/writing to the stack pointer.
|
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*/
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||||
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#define portSAVE_CONTEXT() \
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do{ \
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__asm__( \
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||||
"push af \n" \
|
||||
"ld a,i \n" \
|
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"di \n" \
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"push af ; iff1:iff2\n" \
|
||||
"push bc \n" \
|
||||
"push de \n" \
|
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"push hl \n" \
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||||
"exx \n" \
|
||||
"ex af,af \n" \
|
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"push af \n" \
|
||||
"push bc \n" \
|
||||
"push de \n" \
|
||||
"push hl \n" \
|
||||
"push ix \n" \
|
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"push iy \n" \
|
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"ld hl,0 \n" \
|
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"add hl,sp \n" \
|
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"ld de,(_pxCurrentTCB) \n"\
|
||||
"ex de,hl \n" \
|
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"ld (hl),e \n" \
|
||||
"inc hl \n" \
|
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"ld (hl),d \n" \
|
||||
); \
|
||||
}while(0)
|
||||
|
||||
#define portRESTORE_CONTEXT() \
|
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do{ \
|
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__asm__( \
|
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"ld hl,(_pxCurrentTCB) \n" \
|
||||
"ld e,(hl) \n" \
|
||||
"inc hl \n" \
|
||||
"ld d,(hl) \n" \
|
||||
"ex de,hl \n" \
|
||||
"ld sp,hl \n" \
|
||||
"pop iy \n" \
|
||||
"pop ix \n" \
|
||||
"pop hl \n" \
|
||||
"pop de \n" \
|
||||
"pop bc \n" \
|
||||
"pop af \n" \
|
||||
"ex af,af \n" \
|
||||
"exx \n" \
|
||||
"pop hl \n" \
|
||||
"pop de \n" \
|
||||
"pop bc \n" \
|
||||
"pop af ; iff1:iff2\n" \
|
||||
"; di ; unneeded \n" \
|
||||
"jp PO,ASMPC+4 \n" \
|
||||
"ei \n" \
|
||||
"pop af \n" \
|
||||
"ret \n" \
|
||||
); \
|
||||
}while(0)
|
||||
|
||||
#define portSAVE_CONTEXT_IN_ISR() \
|
||||
do{ \
|
||||
__asm__( \
|
||||
"PHASE "string(configISR_ORG)" \n" \
|
||||
"._timer_isr_start \n" \
|
||||
"push af \n" \
|
||||
"ld a,0x7F \n" \
|
||||
"inc a ; set PE \n" \
|
||||
"push af ; iff1:iff2\n" \
|
||||
"push bc \n" \
|
||||
"push de \n" \
|
||||
"push hl \n" \
|
||||
"exx \n" \
|
||||
"ex af,af \n" \
|
||||
"push af \n" \
|
||||
"push bc \n" \
|
||||
"push de \n" \
|
||||
"push hl \n" \
|
||||
"push ix \n" \
|
||||
"push iy \n" \
|
||||
"ld hl,0 \n" \
|
||||
"add hl,sp \n" \
|
||||
"ld de,(_pxCurrentTCB) \n" \
|
||||
"ex de,hl \n" \
|
||||
"ld (hl),e \n" \
|
||||
"inc hl \n" \
|
||||
"ld (hl),d \n" \
|
||||
); \
|
||||
}while(0)
|
||||
|
||||
#define portRESTORE_CONTEXT_IN_ISR()\
|
||||
do{ \
|
||||
__asm__( \
|
||||
"ld hl,(_pxCurrentTCB) \n" \
|
||||
"ld e,(hl) \n" \
|
||||
"inc hl \n" \
|
||||
"ld d,(hl) \n" \
|
||||
"ex de,hl \n" \
|
||||
"ld sp,hl \n" \
|
||||
"pop iy \n" \
|
||||
"pop ix \n" \
|
||||
"pop hl \n" \
|
||||
"pop de \n" \
|
||||
"pop bc \n" \
|
||||
"pop af \n" \
|
||||
"ex af,af \n" \
|
||||
"exx \n" \
|
||||
"pop hl \n" \
|
||||
"pop de \n" \
|
||||
"pop bc \n" \
|
||||
"pop af ; iff1:iff2\n" \
|
||||
"; di ; unneeded \n" \
|
||||
"jp PO,ASMPC+4 \n" \
|
||||
"ei \n" \
|
||||
"pop af \n" \
|
||||
"reti \n" \
|
||||
"._timer_isr_end \n" \
|
||||
"DEPHASE \n" \
|
||||
); \
|
||||
}while(0)
|
||||
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* Kernel utilities. */
|
||||
extern void vPortYield( void );
|
||||
#define portYIELD() vPortYield()
|
||||
|
||||
extern void vPortYieldFromISR( void );
|
||||
#define portYIELD_FROM_ISR() vPortYieldFromISR()
|
||||
/*-----------------------------------------------------------*/
|
||||
|
||||
/* 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 )
|
||||
|
||||
/* *INDENT-OFF* */
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
/* *INDENT-ON* */
|
||||
|
||||
#endif /* PORTMACRO_H */
|
||||
@@ -0,0 +1,13 @@
|
||||
<h1>Z180 support</h1>
|
||||
|
||||
Description
|
||||
-----------
|
||||
This PR establishes support for a Zilog Z180 port, using the Programmable Reload Timer 1, configured at 256 Hz.
|
||||
|
||||
Because of the generality of the Z180, the address of the Interrupt Vector for the programmable timer PRT1 is configurable, and must be configured by the `crt0.asm` outside of this port. A configuration assumption has been made, which should be checked against the actual system environment.
|
||||
|
||||
The two compilers ([used by the z88dk](https://github.com/z88dk/z88dk)) are supported. The sccz80 compiler and the sdcc compiler. The in-line assembly language notation used can be read by both compilers.
|
||||
|
||||
Background
|
||||
-----------
|
||||
This PR is based on running code for the [SC130](https://smallcomputercentral.wordpress.com/sc130-z180-motherboard/)/[SC131](https://smallcomputercentral.wordpress.com/sc131-z180-pocket-computer/) and [YAZ180](https://github.com/feilipu/yaz180) platforms, and is maintained by the z88dk team in this [z88dk-libraries](https://github.com/feilipu/z88dk-libraries/tree/master/freertos) repository.
|
||||
Reference in New Issue
Block a user