Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-06 00:14:22 +08:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

First successful z80 compile & link

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@457 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2007-12-29 16:31:25 +00:00
parent 022f03bbcd
commit 9def251c00
8 changed files with 161 additions and 145 deletions
Download Patch File Download Diff File Expand all files Collapse all files
configs/z80sim/Make.defs
+2 -10
View File
@@ -57,18 +57,10 @@ AR = sdcclib -a
CFLAGS = $(ARCHWARNINGS) $(ARCHOPTIMIZATION) \
$(ARCHCPUFLAGS) $(ARCHINCLUDES) $(ARCHDEFINES)
CPPFLAGS = $(ARCHINCLUDES) $(ARCHDEFINES)
ASFLAGS =
ASFLAGS = -x -a -l -o -s
SDCCLIBDIR = /usr/local/share/sdcc/lib/z80
SDCCPATH = -L$(SDCCLIBDIR)
SDCCLIBS = -lz80.lib
IRAM_SIZE = 0x100
DEF_STACK_BASE = 0x24
LDFLAGS = --model-large --nostdlib \
--data-loc $(DEF_STACK_BASE) --iram-size $(IRAM_SIZE) \
--code-loc 0x2100 --code-size 0x5f40 \
--xram-loc $(IRAM_SIZE) --xram-size 0x1f00
SDCCLIB = z80.lib
ASMEXT = .asm
OBJEXT = .o
configs/z80sim/defconfig
+1 -1
View File
@@ -86,7 +86,7 @@ CONFIG_DRAM_SIZE=65536
CONFIG_EXAMPLE=ostest
CONFIG_DEBUG=n
CONFIG_DEBUG_VERBOSE=n
CONFIG_MM_REGIONS=2
CONFIG_MM_REGIONS=1
CONFIG_ARCH_LOWPUTC=y
CONFIG_RR_INTERVAL=0
CONFIG_SCHED_INSTRUMENTATION=n
configs/z80sim/src/Makefile
+3 -3
View File
@@ -36,11 +36,11 @@
-include $(TOPDIR)/Make.defs
MKDEP = $(TOPDIR)/tools/mkdeps.sh
CFLAGS += -I$(TOPDIR)/sched
CFLAGS += -I$(TOPDIR)/sched -I$(TOPDIR)/arch/z80/src/common -I$(TOPDIR)/arch/z80/src/z80
ASRCS = z80_lowputc$(ASMEXT)
ASRCS =
AOBJS = $(ASRCS:$(ASMEXT)=$(OBJEXT))
CSRCS = z80_decodeirq.c z80_irq.c z80_serial.c z80_timerisr.c
CSRCS = z80_decodeirq.c z80_irq.c z80_serial.c z80_timerisr.c z80_lowputc.c
COBJS = $(CSRCS:.c=$(OBJEXT))
SRCS = $(ASRCS) $(CSRCS)
configs/z80sim/src/z80_decodeirq.c
+19 -37
View File
@@ -1,5 +1,5 @@
/********************************************************************************
* z80/z80_decodeirq.c
* board/z80_decodeirq.c
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -38,12 +38,13 @@
********************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <assert.h>
#include <debug.h>
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
@@ -64,56 +65,37 @@
********************************************************************************/
/********************************************************************************
* Public Funtions
* Public Functions
********************************************************************************/
void up_decodeirq(uint16* regs)
FAR chipreg_t *up_decodeirq(FAR chipreg_t *regs)
{
#ifdef CONFIG_SUPPRESS_INTERRUPTS
lib_lowprintf("Unexpected IRQ\n");
current_regs = regs;
PANIC(OSERR_ERREXCEPTION);
return NULL; /* Won't get here */
#else
/* Decode the interrupt. First, fetch the interrupt id register. */
uint16 irqentry = getreg16(DM320_INTC_IRQENTRY0);
/* Current regs non-zero indicates that we are processing an interrupt;
* current_regs is also used to manage interrupt level context switches.
*/
/* The irqentry value is an offset into a table. Zero means no interrupt. */
current_regs = regs;
if (irqentry != 0)
{
/* If non-zero, then we can map the table offset into an IRQ number */
/* Deliver the IRQ -- the simulation supports only timer interrupts */
int irq = (irqentry >> 2) - 1;
irq_dispatch(Z80_IRQ_SYSTIMER, regs);
/* Verify that the resulting IRQ number is valie */
/* If a context switch occurred, current_regs will hold the new context */
if ((unsigned)irq < NR_IRQS)
{
/* Mask and acknowledge the interrupt */
regs = current_regs;
up_maskack_irq(irq);
/* Indicate that we are no long in an interrupt handler */
/* Current regs non-zero indicates that we are processing an interrupt;
* current_regs is also used to manage interrupt level context switches.
*/
current_regs = regs;
/* Deliver the IRQ */
irq_dispatch(irq, regs);
/* Indicate that we are no long in an interrupt handler */
current_regs = NULL;
/* Unmask the last interrupt (global interrupts are still
* disabled.
*/
up_enable_irq(irq);
}
}
current_regs = NULL;
return regs;
#endif
}
configs/z80sim/src/z80_irq.c
+6 -6
View File
@@ -1,7 +1,7 @@
/****************************************************************************
* z80/z80_irq.c
* board/z80_irq.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
@@ -38,8 +38,10 @@
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/irq.h>
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
@@ -52,8 +54,6 @@
* Public Data
****************************************************************************/
uint32 *current_regs;
/****************************************************************************
* Private Data
****************************************************************************/
@@ -63,7 +63,7 @@ uint32 *current_regs;
****************************************************************************/
/****************************************************************************
* Public Funtions
* Public Functions
****************************************************************************/
/****************************************************************************
configs/z80sim/src/z80_lowputc.c
+101
View File
@@ -0,0 +1,101 @@
/********************************************************************************
* board/z80_lowputc.c
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
********************************************************************************/
/********************************************************************************
* Included Files
********************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <nuttx/irq.h>
#include <nuttx/arch.h>
#include <assert.h>
#include <debug.h>
#include "up_arch.h"
#include "os_internal.h"
#include "up_internal.h"
/********************************************************************************
* Definitions
********************************************************************************/
/********************************************************************************
* Public Data
********************************************************************************/
/********************************************************************************
* Private Data
********************************************************************************/
/********************************************************************************
* Private Functions
********************************************************************************/
/********************************************************************************
* Public Functions
********************************************************************************/
/********************************************************************************
* Name: up_lowputc
*
* Data sent to port 0xbe are echoed on stdout by the simulation
*
********************************************************************************/
void up_lowputc(char ch) __naked
{
_asm
ld a, #2(sp)
out #0xbe, a
ret
_endasm;
}
/********************************************************************************
* Name: up_lowgetc
*
* Data from stdin can be received on port 0xbe in the simulation
*
********************************************************************************/
char up_lowgetc(void) __naked
{
_asm
in #0xbe, a
ld l, a
ld h, #0
ret
_endasm;
}
configs/z80sim/src/z80_serial.c
+2 -3
View File
@@ -1,5 +1,5 @@
/****************************************************************************
* z80/z80_serial.c
* board/z80_serial.c
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@@ -41,7 +41,6 @@
#include <sys/types.h>
#include <unistd.h>
#include <semaphore.h>
#include <string.h>
#include <errno.h>
#include <debug.h>
@@ -282,7 +281,7 @@ static boolean up_txfifoempty(struct uart_dev_s *dev)
}
/****************************************************************************
* Public Funtions
* Public Functions
****************************************************************************/
/****************************************************************************
configs/z80sim/src/z80_timerisr.c
+27 -85
View File
@@ -1,7 +1,7 @@
/************************************************************
* dm320/dm320_timerisr.c
/****************************************************************************
* board/z80_timerisr.c
*
* Copyright (C) 2007 Gregory Nutt. All rights reserved.
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
@@ -14,7 +14,7 @@
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name Gregory Nutt nor the names of its contributors may be
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
@@ -31,89 +31,48 @@
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Included Files
************************************************************/
****************************************************************************/
#include <nuttx/config.h>
#include <sys/types.h>
#include <debug.h>
#include <nuttx/arch.h>
#include "clock_internal.h"
#include "up_internal.h"
#include "up_arch.h"
/************************************************************
/****************************************************************************
* Definitions
************************************************************/
****************************************************************************/
/* DM320 Timers
*
* Each of the general-purpose timers can run in one of two modes: one-
* shot mode and free-run mode. In one-shot mode, an interrupt only
* occurs once and then the timer must be explicitly reset to begin the
* timing operation again. In free-run mode, when the timer generates an
* interrupt, the timer counter is automatically reloaded to start the count
* operation again. Use the bit field MODE in TMMDx to configure the
* timer for one-shot more or free-run mode. The bit field MODE in TMMDx
* also allows you to stop the timer.
*
* Either the ARM clock divided by 2 (CLK_ARM/2) or an external clock
* connected to the M27XI pin can be selected as the clock source of the
* timer.
*
* The actual clock frequency used in the timer count operation is the input
* clock divided by: 1 plus the value set in the bit field PRSCL of the
* register TMPRSCLx (10 bits). The timer expires when it reaches the
* value set in the bit field DIV of the register TMDIVx (16 bits) plus 1.
* PRSCL+1 is the source clock frequency divide factor and DIV+1 is the
* timer count value. The frequency of a timer interrupt is given by the
* following equation:
*
* Interrupt Frequency = (Source Clock Frequency) / (PRSCL+1) / (DIV+1)
*/
/* System Timer
*
* Timer0 is dedicated as the system timer. The rate of system timer
* interrupts is assumed to to 10MS per tick / 100Hz. The following
* register settings are used for timer 0
*
* System clock formula:
* Interrupt Frequency = (Source Clock Frequency) / (PRSCL+1) / (DIV+1)
* Source Clock Frequency = 27MHz (PLL clock)
* DIV = 26,999 (Yields 1Khz timer clock)
* PRSCL = 9 (Produces 100Hz interrupts)
*/
#define DM320_TMR0_MODE DM320_TMR_MODE_FREERUN /* Free running */
#define DM320_TMR0_DIV 26999 /* (see above) */
#define DM320_TMR0_PRSCL 9 /* (see above) */
/************************************************************
/****************************************************************************
* Private Types
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Private Function Prototypes
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Global Functions
************************************************************/
****************************************************************************/
/************************************************************
/****************************************************************************
* Function: up_timerisr
*
* Description:
* The timer ISR will perform a variety of services for
* various portions of the systems.
* The timer ISR will perform a variety of services for various portions of
* the system.
*
************************************************************/
****************************************************************************/
int up_timerisr(int irq, uint32 *regs)
int up_timerisr(int irq, FAR chipreg_t *regs)
{
/* Process timer interrupt */
@@ -121,33 +80,16 @@ int up_timerisr(int irq, uint32 *regs)
return 0;
}
/************************************************************
/****************************************************************************
* Function: up_timerinit
*
* Description:
* This function is called during start-up to initialize
* the timer interrupt.
* This function is called during start-up to initialize the timer
* interrupt.
*
************************************************************/
****************************************************************************/
void up_timerinit(void)
{
up_disable_irq(DM320_IRQ_SYSTIMER);
/* Start timer0 running so that an interrupt is generated at
* the rate MSEC_PER_TICK.
*/
putreg16(DM320_TMR0_PRSCL, DM320_TIMER0_TMPRSCL); /* Timer 0 Prescalar */
putreg16(DM320_TMR0_DIV, DM320_TIMER0_TMDIV); /* Timer 0 Divisor (count) */
/* Start the timer */
putreg16(DM320_TMR0_MODE, DM320_TIMER0_TMMD); /* Timer 0 Mode */
/* Attach and enable the timer interrupt */
irq_attach(DM320_IRQ_SYSTIMER, (xcpt_t)up_timerisr);
up_enable_irq(DM320_IRQ_SYSTIMER);
}