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git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@190 35acf78f-673a-0410-8e92-d51de3d6d3f4

master
gdisirio 2008-02-06 14:41:28 +00:00
parent eb82df9b16
commit 4fb21e032e
13 changed files with 4079 additions and 0 deletions
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197
demos/ARM7-AT91SAM7X-GCC/Makefile Normal file
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#
# !!!! Do NOT edit this makefile with an editor which replace tabs by spaces !!!!
#
##############################################################################################
#
# On command line:
#
# make all = Create project
#
# make clean = Clean project files.
#
# To rebuild project do "make clean" and "make all".
#
##############################################################################################
# Start of default section
#
TRGT = arm-elf-
CC = $(TRGT)gcc
CP = $(TRGT)objcopy
AS = $(TRGT)gcc -x assembler-with-cpp
OD = $(TRGT)objdump
HEX = $(CP) -O ihex
BIN = $(CP) -O binary
MCU = arm7tdmi
# List all default C defines here, like -D_DEBUG=1
DDEFS =
# List all default ASM defines here, like -D_DEBUG=1
DADEFS =
# List all default directories to look for include files here
DINCDIR =
# List the default directory to look for the libraries here
DLIBDIR =
# List all default libraries here
DLIBS =
#
# End of default section
##############################################################################################
##############################################################################################
# Start of user section
#
# Define project name here
PROJECT = ch
# Define linker script file here
LDSCRIPT= ch.ld
# List all user C define here, like -D_DEBUG=1
UDEFS =
# Define ASM defines here
UADEFS =
# List ARM-mode C source files here
ASRC = \
../../src/chinit.c ../../src/chdebug.c ../../src/chlists.c ../../src/chdelta.c \
../../src/chschd.c ../../src/chthreads.c ../../src/chsem.c ../../src/chmtx.c \
../../src/chevents.c ../../src/chmsg.c ../../src/chsleep.c ../../src/chqueues.c \
../../src/chserial.c \
../../src/lib/evtimer.c ../../test/test.c \
board.c main.c
# List THUMB-mode C sources here
# NOTE: If any module is compiled in thumb mode then -mthumb-interwork is
# enabled for all modules and that lowers performance.
TSRC =
# List ASM source files here
ASMSRC = ../../ports/ARM7-AT91SAM7X/GCC/crt0.s
# List all user directories here
UINCDIR = ../../src/include ../../src/lib ../../ports/ARM7-AT91SAM7X/GCC
# List the user directory to look for the libraries here
ULIBDIR =
# List all user libraries here
ULIBS =
# ARM-specific options here
AOPT =
# THUMB-specific options here
TOPT = -mthumb -D THUMB
# Common options here
# NOTE: -ffixed-r7 is only needed if you enabled CH_CURRP_REGISTER_CACHE in
# chconf.h.
# NOTE: -falign-functions=16 may improve the performance, not always, but
# increases the code size.
OPT = -O2 -ggdb -fomit-frame-pointer -fno-strict-aliasing
#OPT += -ffixed-r7
OPT += -falign-functions=16
# Define warning options here
WARN = -Wall -Wstrict-prototypes
#
# End of user defines
##############################################################################################
INCDIR = $(patsubst %,-I%,$(DINCDIR) $(UINCDIR))
LIBDIR = $(patsubst %,-L%,$(DLIBDIR) $(ULIBDIR))
DEFS = $(DDEFS) $(UDEFS)
ADEFS = $(DADEFS) $(UADEFS)
AOBJS = $(ASRC:.c=.o)
TOBJS = $(TSRC:.c=.o)
OBJS = $(ASMOBJS) $(AOBJS) $(TOBJS)
ASMOBJS = $(ASMSRC:.s=.o)
LIBS = $(DLIBS) $(ULIBS)
MCFLAGS = -mcpu=$(MCU)
ASFLAGS = $(MCFLAGS) -Wa,-amhls=$(<:.s=.lst) $(ADEFS)
CPFLAGS = $(MCFLAGS) $(OPT) $(WARN) -Wa,-alms=$(<:.c=.lst) $(DEFS)
LDFLAGS = $(MCFLAGS) -nostartfiles -T$(LDSCRIPT) -Wl,-Map=$(PROJECT).map,--cref,--no-warn-mismatch $(LIBDIR)
ODFLAGS = -x --syms
# Thumb interwork enabled only if needed because it kills performance.
ifneq ($(TSRC),)
CPFLAGS += -D THUMB_PRESENT
ifneq ($(ASRC),)
# Mixed ARM and THUMB case.
CPFLAGS += -mthumb-interwork
LDFLAGS += -mthumb-interwork
else
# Pure THUMB case, THUMB C code cannot be called by ARM asm code directly.
CPFLAGS += -D THUMB_NO_INTERWORKING
LDFLAGS += -mthumb
ASFLAGS += -D THUMB_NO_INTERWORKING
endif
endif
# Generate dependency information
CPFLAGS += -MD -MP -MF .dep/$(@F).d
#
# Makefile rules
#
all: $(OBJS) $(PROJECT).elf $(PROJECT).hex $(PROJECT).bin $(PROJECT).dmp
$(AOBJS) : %.o : %.c
@echo
$(CC) -c $(CPFLAGS) $(AOPT) -I . $(INCDIR) $< -o $@
$(TOBJS) : %.o : %.c
@echo
$(CC) -c $(CPFLAGS) $(TOPT) -I . $(INCDIR) $< -o $@
$(ASMOBJS) : %.o : %.s
@echo
$(AS) -c $(ASFLAGS) -I . $(INCDIR) $< -o $@
%elf: $(OBJS)
@echo
$(CC) $(ASMOBJS) $(AOBJS) $(TOBJS) $(LDFLAGS) $(LIBS) -o $@
%hex: %elf
$(HEX) $< $@
%bin: %elf
$(BIN) $< $@
%dmp: %elf
$(OD) $(ODFLAGS) $< > $@
clean:
-rm -f $(OBJS)
-rm -f $(PROJECT).elf
-rm -f $(PROJECT).dmp
-rm -f $(PROJECT).map
-rm -f $(PROJECT).hex
-rm -f $(PROJECT).bin
-rm -f $(ASRC:.c=.c.bak)
-rm -f $(ASRC:.c=.lst)
-rm -f $(TSRC:.c=.c.bak)
-rm -f $(TSRC:.c=.lst)
-rm -f $(ASMSRC:.s=.s.bak)
-rm -f $(ASMSRC:.s=.lst)
-rm -fR .dep
#
# Include the dependency files, should be the last of the makefile
#
-include $(shell mkdir .dep 2>/dev/null) $(wildcard .dep/*)
# *** EOF ***

2918
demos/ARM7-AT91SAM7X-GCC/at91lib/AT91SAM7X256.h Normal file
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25
demos/ARM7-AT91SAM7X-GCC/board.c Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ch.h>
#include "at91lib/AT91SAM7X256.h"
void hwinit(void) {
}

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demos/ARM7-AT91SAM7X-GCC/board.h Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _BOARD_H_
#define _BOARD_H_
#define BOARD_OLIMEX_SAM7_EX256
#endif /* _BOARD_H_ */

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demos/ARM7-AT91SAM7X-GCC/ch.ld Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* AT91SAM7X256 memory setup.
*/
__und_stack_size__ = 0x0004;
__abt_stack_size__ = 0x0004;
__fiq_stack_size__ = 0x0010;
__irq_stack_size__ = 0x0080;
__svc_stack_size__ = 0x0004;
__sys_stack_size__ = 0x0100;
__stacks_total_size__ = __und_stack_size__ + __abt_stack_size__ + __fiq_stack_size__ + __irq_stack_size__ + __svc_stack_size__ + __sys_stack_size__;
MEMORY
{
flash : org = 0x100000, len = 256k
ram : org = 0x200000, len = 64k
}
__ram_start__ = ORIGIN(ram);
__ram_size__ = LENGTH(ram);
__ram_end__ = __ram_start__ + __ram_size__;
__dma_start__ = 0x7FD00000;
__dma_size__ = 8k;
__dma_end__ = 0x7FD00000 + __dma_size__;
SECTIONS
{
. = 0;
.text :
{
_text = .;
*(.text);
*(.rodata);
*(.rodata*);
*(.glue_7t);
*(.glue_7);
. = ALIGN(4);
_etext = .;
} > flash
_textdata = _etext;
.data :
{
_data = .;
*(.data)
. = ALIGN(4);
*(.ramtext)
. = ALIGN(4);
_edata = .;
} > ram AT > flash
.bss :
{
_bss_start = .;
*(.bss)
. = ALIGN(4);
*(COMMON)
. = ALIGN(4);
_bss_end = .;
} > ram
}
PROVIDE(end = .);
_end = .;
__heap_base__ = _end;
__heap_end__ = __ram_end__ - __stacks_total_size__;

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demos/ARM7-AT91SAM7X-GCC/chconf.h Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Configuration file for LPC214x-GCC demo project.
*/
/**
* @addtogroup Config
* @{
*/
#ifndef _CHCONF_H_
#define _CHCONF_H_
/** Configuration option: if specified then time efficient rather than space
* efficient code is used when two possible implementations exist, note
* that this is not related to the compiler optimization options.*/
#define CH_OPTIMIZE_SPEED
/** Configuration option: if specified then the Virtual Timers subsystem is
* included in the kernel.*/
#define CH_USE_VIRTUAL_TIMERS
/** Configuration option: if specified then the System Timer subsystem is
* included in the kernel.*/
#define CH_USE_SYSTEMTIME
/** Configuration option: if specified then the \p chThdSleep() function is
* included in the kernel.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
#define CH_USE_SLEEP
/** Configuration option: if specified then the \p chThdResume()
* function is included in the kernel.*/
#define CH_USE_RESUME
/** Configuration option: if specified then the \p chThdSuspend()
* function is included in the kernel.*/
#define CH_USE_SUSPEND
/** Configuration option: if specified then the \p chThdTerminate()
* and \p chThdShouldTerminate() functions are included in the kernel.*/
#define CH_USE_TERMINATE
/** Configuration option: if specified then the \p chThdWait() function
* is included in the kernel.*/
#define CH_USE_WAITEXIT
/** Configuration option: if specified then the Semaphores APIs are included
* in the kernel.*/
#define CH_USE_SEMAPHORES
/** Configuration option: if specified then the Semaphores atomic Signal+Wait
* APIs are included in the kernel.*/
#define CH_USE_SEMSW
/** Configuration option: if specified then the Semaphores with timeout APIs
* are included in the kernel.
* @note requires \p CH_USE_SEMAPHORES.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
#define CH_USE_SEMAPHORES_TIMEOUT
/** Configuration option: if specified then the Mutexes APIs are included in
* the kernel.*/
#define CH_USE_MUTEXES
/** Configuration option: if specified then the Events APIs are included in
* the kernel.*/
#define CH_USE_EVENTS
/** Configuration option: if specified then the \p chEvtWaitTimeout()
* function is included in the kernel.
* @note requires \p CH_USE_EVENTS.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
#define CH_USE_EVENTS_TIMEOUT
/** Configuration option: if specified then the Synchronous Messages APIs are
* included in the kernel.*/
#define CH_USE_MESSAGES
/** Configuration option: if specified then the \p chMsgSendWithEvent()
* function is included in the kernel.
* @note requires \p CH_USE_MESSAGES.
* @note requires \p CH_USE_VIRTUAL_TIMERS.*/
#define CH_USE_MESSAGES_EVENT
/** Configuration option: If enabled then the threads have an option to serve
* messages by priority instead of FIFO order.
* @note requires \p CH_USE_MESSAGES.*/
//#define CH_USE_MESSAGES_PRIORITY
/** Configuration option: if specified then the
* \p chThdGetExitEventSource() function is included in the kernel.
* @note requires \p CH_USE_MESSAGES.
* @note requires \p CH_USE_EVENTS.*/
#define CH_USE_EXIT_EVENT
/** Configuration option: if specified then the I/O queues APIs are included
* in the kernel.*/
#define CH_USE_QUEUES
/** Configuration option: if specified then the halfduplex queue APIs are
* included in the kernel.*/
#define CH_USE_QUEUES_HALFDUPLEX
/** Configuration option: if specified then the I/O queues with timeout
* APIs are included in the kernel.
* @note requires \p CH_USE_SEMAPHORES_TIMEOUT.*/
#define CH_USE_QUEUES_TIMEOUT
/** Configuration option: if specified then the full duplex serial driver APIs
* are included in the kernel.*/
#define CH_USE_SERIAL_FULLDUPLEX
/** Configuration option: if specified then the half duplex serial driver APIs
* are included in the kernel.*/
#define CH_USE_SERIAL_HALFDUPLEX
/** Configuration option: Frequency of the system timer that drives the system
* ticks. This also defines the system time unit.*/
#define CH_FREQUENCY 1000
/** Configuration option: This constant is the number of ticks allowed for the
* threads before preemption occurs.*/
#define CH_TIME_QUANTUM 20
/** Configuration option: Defines a CPU register to be used as storage for the
* global \p currp variable. Caching this variable in a register can greatly
* improve both space and time efficiency of the generated code. Another side
* effect is that one less register has to be saved during the context switch
* resulting in lower RAM usage and faster code.
* @note This option is only useable with the GCC compiler and is only useful
* on processors with many registers like ARM cores.
* @note If this option is enabled then ALL the libraries linked to the
* ChibiOS/RT code <b>must</b> be recompiled with the GCC option \p
* -ffixed-<reg>.
*/
//#define CH_CURRP_REGISTER_CACHE "r7"
/** Configuration option: Includes basic debug support to the kernel.
* @note the debug support is port-dependent, it may be not present on some
* targets. In that case stub functions will be included.
*/
//#define CH_USE_DEBUG
/** Debug option: Includes the threads context switch tracing feature.
*/
//#define CH_USE_TRACE
#endif /* _CHCONF_H_ */
/** @} */

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demos/ARM7-AT91SAM7X-GCC/main.c Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ch.h>
#include "at91lib/AT91SAM7X256.h"
/*
* Entry point, the interrupts are disabled on entry.
*/
int main(int argc, char **argv) {
/*
* The main() function becomes a thread here then the interrupts are
* enabled and ChibiOS/RT goes live.
*/
chSysInit();
while (TRUE)
chThdSleep(1000);
return 0;
}

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demos/ARM7-AT91SAM7X-GCC/readme.txt Normal file
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*****************************************************************************
** ChibiOS/RT port for ARM7TDMI AT91SAM7X256. **
*****************************************************************************
** TARGET **
The demo runs on an Olimex SAM7-EX256 board.
** The Demo **
The demo blinks the leds on the board by using multiple threads.
** Build Procedure **
The demo was built using the YAGARTO toolchain but any toolchain based on GCC
and GNU userspace programs will work.
** Notes **
Some files used by the demo are not part of ChibiOS/RT but are Atmel copyright
and are licensed under a different license, see the header present in all the
source files under ./demos/AT91SAM7X256/at91lib for details.
Also note that not all the files present in the Atmel library are distribuited
with ChibiOS/RT, you can find the whole library on the Atmel web site:
http://www.atmel.com

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ports/ARM7-AT91SAM7X/GCC/chcore.c Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <ch.h>
#include "at91lib/AT91SAM7X256.h"
/*
* System idle thread loop.
*/
void _IdleThread(void *p) {
while (TRUE) {
// Note, it is disabled because it causes trouble with the JTAG probe.
// Enable it in the final code only.
// PCON = 1;
}
}
/*
* The following functions are present only if there is in the system any
* code compiled as THUMB that may invoke them.
* NOTE: The undefs are there in case this module is compiled in ARM mode but
* there are THUMB modules in the system.
*/
#ifdef THUMB_PRESENT
#undef chSysLock
void chSysLock(void) {
#ifdef THUMB
asm(".p2align 2,, \n\t" \
"mov r0, pc \n\t" \
"bx r0 \n\t" \
".code 32 \n\t");
#endif
asm("msr CPSR_c, #0x9F \n\t" \
"bx lr \n\t");
}
#undef chSysUnlock
void chSysUnlock(void) {
#ifdef THUMB
asm(".p2align 2,, \n\t" \
"mov r0, pc \n\t" \
"bx r0 \n\t" \
".code 32 \n\t");
#endif
asm("msr CPSR_c, #0x1F \n\t" \
"bx lr \n\t");
}
#endif
void chSysSwitchI(Thread *otp, Thread *ntp) {
#ifdef THUMB
asm(".p2align 2,, \n\t" \
"mov r2, pc \n\t" \
"bx r2 \n\t" \
".code 32 \n\t");
#endif
#ifdef CH_CURRP_REGISTER_CACHE
asm("stmfd sp!, {r4, r5, r6, r8, r9, r10, r11, lr} \n\t" \
"str sp, [r0, #16] \n\t" \
"ldr sp, [r1, #16] \n\t");
#ifdef THUMB_PRESENT
asm("ldmfd sp!, {r4, r5, r6, r8, r9, r10, r11, lr} \n\t" \
"bx lr \n\t");
#else /* !THUMB_PRESENT */
asm("ldmfd sp!, {r4, r5, r6, r8, r9, r10, r11, pc} \n\t");
#endif /* !THUMB_PRESENT */
#else /* !CH_CURRP_REGISTER_CACHE */
asm("stmfd sp!, {r4, r5, r6, r7, r8, r9, r10, r11, lr} \n\t" \
"str sp, [r0, #16] \n\t" \
"ldr sp, [r1, #16] \n\t");
#ifdef THUMB_PRESENT
asm("ldmfd sp!, {r4, r5, r6, r7, r8, r9, r10, r11, lr} \n\t" \
"bx lr \n\t");
#else /* !THUMB_PRESENT */
asm("ldmfd sp!, {r4, r5, r6, r7, r8, r9, r10, r11, pc} \n\t");
#endif /* !THUMB_PRESENT */
#endif /* !CH_CURRP_REGISTER_CACHE */
}
/*
* System console message (not implemented).
*/
void chSysPuts(char *msg) {
}
/*
* Common IRQ exit code, \p chSysIRQExitI() just jumps here.
*
* System stack frame structure after a context switch in the
* interrupt handler:
*
* High +------------+
* | LR_USR | -+
* | R12 | |
* | R3 | |
* | R2 | | External context: IRQ handler frame
* | R1 | |
* | R0 | |
* | LR_IRQ | | (user code return address)
* | SPSR | -+ (user code status)
* | .... | <- chSchDoRescheduleI() stack frame, optimize it for space
* | LR | -+ (system code return address)
* | R11 | |
* | R10 | |
* | R9 | |
* | R8 | | Internal context: chSysSwitchI() frame
* | (R7) | | (optional, see CH_CURRP_REGISTER_CACHE)
* | R6 | |
* | R5 | |
* SP-> | R4 | -+
* Low +------------+
*/
__attribute__((naked, weak))
void IrqCommon(void) {
register BOOL b asm("r0");
// VICVectAddr = 0;
b = chSchRescRequiredI();
#ifdef THUMB
asm(".p2align 2,, \n\t" \
"mov lr, pc \n\t" \
"bx lr \n\t" \
".code 32 \n\t");
#endif
/*
* If a reschedulation is not required then just returns from the IRQ.
*/
asm("cmp r0, #0 \n\t" \
"ldmeqfd sp!, {r0-r3, r12, lr} \n\t" \
"subeqs pc, lr, #4 \n\t");
/*
* Reschedulation required, saves the external context on the
* system/user stack and empties the IRQ stack.
*/
asm(".set MODE_IRQ, 0x12 \n\t" \
".set MODE_SYS, 0x1F \n\t" \
".set F_BIT, 0x40 \n\t" \
".set I_BIT, 0x80 \n\t" \
"ldmfd sp!, {r0-r3, r12, lr} \n\t" \
"msr CPSR_c, #MODE_SYS | I_BIT \n\t" \
"stmfd sp!, {r0-r3, r12, lr} \n\t" \
"msr CPSR_c, #MODE_IRQ | I_BIT \n\t" \
"mrs r0, SPSR \n\t" \
"mov r1, lr \n\t" \
"msr CPSR_c, #MODE_SYS | I_BIT \n\t" \
"stmfd sp!, {r0, r1} \n\t");
#ifdef THUMB_NO_INTERWORKING
asm("add r0, pc, #1 \n\t" \
"bx r0 \n\t" \
".code 16 \n\t" \
"bl chSchDoRescheduleI \n\t" \
".p2align 2,, \n\t" \
"mov lr, pc \n\t" \
"bx lr \n\t" \
".code 32 \n\t");
#else
asm("bl chSchDoRescheduleI \n\t");
#endif
/*
* Restores the external context.
*/
asm("ldmfd sp!, {r0, r1} \n\t" \
"msr CPSR_c, #MODE_IRQ | I_BIT \n\t" \
"msr SPSR_fsxc, r0 \n\t" \
"mov lr, r1 \n\t" \
"msr CPSR_c, #MODE_SYS | I_BIT \n\t" \
"ldmfd sp!, {r0-r3, r12, lr} \n\t" \
"msr CPSR_c, #MODE_IRQ | I_BIT \n\t" \
"subs pc, lr, #4 \n\t");
/*
* Threads entry/exit code. It is declared weak so you can easily replace it.
* NOTE: It is always invoked in ARM mode, it does the mode switching.
* NOTE: It is included into IrqCommon to make sure the symbol refers to
* 32 bit code.
*/
asm(".weak threadstart \n\t" \
".globl threadstart \n\t" \
"threadstart: \n\t" \
"msr CPSR_c, #MODE_SYS \n\t");
#ifndef THUMB_NO_INTERWORKING
asm("mov r0, r5 \n\t" \
"mov lr, pc \n\t" \
"bx r4 \n\t" \
"bl chThdExit \n\t");
#else
asm("add r0, pc, #1 \n\t" \
"bx r0 \n\t" \
".code 16 \n\t" \
"mov r0, r5 \n\t" \
"bl jmpr4 \n\t" \
"bl chThdExit \n\t" \
"jmpr4: \n\t" \
"bx r4 \n\t");
#endif
}
/*
* System halt.
*/
__attribute__((naked, weak))
void chSysHalt(void) {
#ifdef THUMB
asm("ldr r0, =_halt32 \n\t" \
"bx r0 \n\t");
#endif
asm("b _halt32 \n\t");
}

129
ports/ARM7-AT91SAM7X/GCC/chcore.h Normal file
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@ -0,0 +1,129 @@
/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CHCORE_H_
#define _CHCORE_H_
typedef void *regarm;
/*
* Interrupt saved context.
*/
struct extctx {
regarm spsr_irq;
regarm lr_irq;
regarm r0;
regarm r1;
regarm r2;
regarm r3;
regarm r12;
};
/*
* System saved context.
*/
struct intctx {
regarm r4;
regarm r5;
regarm r6;
#ifndef CH_CURRP_REGISTER_CACHE
regarm r7;
#endif
regarm r8;
regarm r9;
regarm r10;
regarm r11;
regarm lr;
};
/*
* Port dependent part of the Thread structure, you may add fields in
* this structure.
*/
typedef struct {
struct intctx *r13;
} Context;
/*
* Platform dependent part of the \p chThdCreate() API.
*/
#define SETUP_CONTEXT(workspace, wsize, pf, arg) { \
tp->p_ctx.r13 = (struct intctx *)((BYTE8 *)workspace + \
wsize - \
sizeof(struct intctx)); \
tp->p_ctx.r13->r4 = pf; \
tp->p_ctx.r13->r5 = arg; \
tp->p_ctx.r13->lr = threadstart; \
}
#ifdef THUMB
extern void chSysLock(void);
extern void chSysUnlock(void);
#else /* !THUMB */
#define chSysLock() asm("msr CPSR_c, #0x9F")
#define chSysUnlock() asm("msr CPSR_c, #0x1F")
#endif /* THUMB */
#ifdef THUMB
#define INT_REQUIRED_STACK 0x10
#else /* !THUMB */
#define INT_REQUIRED_STACK 0
#endif /* !THUMB */
#define StackAlign(n) ((((n) - 1) | 3) + 1)
#define UserStackSize(n) StackAlign(sizeof(Thread) + \
sizeof(struct intctx) + \
sizeof(struct extctx) + \
(n) + \
INT_REQUIRED_STACK)
#define WorkingArea(s, n) ULONG32 s[UserStackSize(n) >> 2];
#ifdef THUMB
#define chSysIRQEnterI() { \
asm(".code 32 \n\t" \
"stmfd sp!, {r0-r3, r12, lr} \n\t" \
"add r0, pc, #1 \n\t" \
"bx r0 \n\t" \
".code 16 \n\t"); \
}
#define chSysIRQExitI() { \
VICVectAddr = 0; \
asm("ldr r0, =IrqCommon \n\t" \
"bx r0 \n\t"); \
}
#else /* !THUMB */
#define chSysIRQEnterI() { \
asm("stmfd sp!, {r0-r3, r12, lr} \n\t"); \
}
#define chSysIRQExitI() { \
asm("b IrqCommon \n\t"); \
}
#endif /* !THUMB */
/* It requires zero bytes, but better be safe.*/
#define IDLE_THREAD_STACK_SIZE 8
void _IdleThread(void *p) __attribute__((noreturn));
void chSysHalt(void);
void chSysSwitchI(Thread *otp, Thread *ntp);
void chSysPuts(char *msg);
void threadstart(void);
#endif /* _CHCORE_H_ */

47
ports/ARM7-AT91SAM7X/GCC/chtypes.h Normal file
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@ -0,0 +1,47 @@
/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef _CHTYPES_H_
#define _CHTYPES_H_
/*
* Generic types often dependant on the compiler.
*/
#define BOOL char
#define BYTE8 unsigned char
#define SBYTE8 char
#define WORD16 short
#define UWORD16 unsigned short
#define LONG32 int
#define ULONG32 unsigned int
typedef BYTE8 t_tmode;
typedef BYTE8 t_tstate;
typedef UWORD16 t_tid;
typedef ULONG32 t_prio;
typedef LONG32 t_msg;
typedef LONG32 t_eventid;
typedef ULONG32 t_eventmask;
typedef ULONG32 t_time;
typedef LONG32 t_cnt;
typedef ULONG32 t_size;
#define INLINE inline
#endif /* _CHTYPES_H_ */

178
ports/ARM7-AT91SAM7X/GCC/crt0.s Normal file
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/*
ChibiOS/RT - Copyright (C) 2006-2007 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT 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 3 of the License, or
(at your option) any later version.
ChibiOS/RT 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
/*
* Generic ARM startup file for ChibiOS/RT.
*/
.extern _main
.set MODE_USR, 0x10
.set MODE_FIQ, 0x11
.set MODE_IRQ, 0x12
.set MODE_SVC, 0x13
.set MODE_ABT, 0x17
.set MODE_UND, 0x1B
.set MODE_SYS, 0x1F
.equ I_BIT, 0x80
.equ F_BIT, 0x40
.text
.code 32
.balign 4
/*
* System entry points.
*/
_start:
b ResetHandler
ldr pc, _undefined
ldr pc, _swi
ldr pc, _prefetch
ldr pc, _abort
nop
ldr pc, [pc,#-0xFF0] /* VIC - IRQ Vector Register */
ldr pc, _fiq
_undefined:
.word UndHandler
_swi:
.word SwiHandler
_prefetch:
.word PrefetchHandler
_abort:
.word AbortHandler
_fiq:
.word FiqHandler
.word 0
.word 0
.word 0
/*
* Reset handler.
*/
ResetHandler:
/*
* Stack pointers initialization.
*/
ldr r0, =__ram_end__
/* Undefined */
msr CPSR_c, #MODE_UND | I_BIT | F_BIT
mov sp, r0
ldr r1, =__und_stack_size__
sub r0, r0, r1
/* Abort */
msr CPSR_c, #MODE_ABT | I_BIT | F_BIT
mov sp, r0
ldr r1, =__abt_stack_size__
sub r0, r0, r1
/* FIQ */
msr CPSR_c, #MODE_FIQ | I_BIT | F_BIT
mov sp, r0
ldr r1, =__fiq_stack_size__
sub r0, r0, r1
/* IRQ */
msr CPSR_c, #MODE_IRQ | I_BIT | F_BIT
mov sp, r0
ldr r1, =__irq_stack_size__
sub r0, r0, r1
/* Supervisor */
msr CPSR_c, #MODE_SVC | I_BIT | F_BIT
mov sp, r0
ldr r1, =__svc_stack_size__
sub r0, r0, r1
/* System */
msr CPSR_c, #MODE_SYS | I_BIT | F_BIT
mov sp, r0
// ldr r1, =__sys_stack_size__
// sub r0, r0, r1
/*
* Data initialization.
* NOTE: It assumes that the DATA size is a multiple of 4.
*/
ldr r1, =_textdata
ldr r2, =_data
ldr r3, =_edata
dataloop:
cmp r2, r3
ldrlo r0, [r1], #4
strlo r0, [r2], #4
blo dataloop
/*
* BSS initialization.
* NOTE: It assumes that the BSS size is a multiple of 4.
*/
mov r0, #0
ldr r1, =_bss_start
ldr r2, =_bss_end
bssloop:
cmp r1, r2
strlo r0, [r1], #4
blo bssloop
/*
* Application-provided HW initialization routine.
*/
#ifndef THUMB_NO_INTERWORKING
bl hwinit
/*
* main(0, NULL).
*/
mov r0, #0
mov r1, r0
bl main
bl chSysHalt
#else
add r0, pc, #1
bx r0
.code 16
bl hwinit
mov r0, #0
mov r1, r0
bl main
bl chSysHalt
.code 32
#endif
.weak UndHandler
.globl UndHandler
UndHandler:
.weak SwiHandler
.globl SwiHandler
SwiHandler:
.weak PrefetchHandler
.globl PrefetchHandler
PrefetchHandler:
.weak AbortHandler
.globl AbortHandler
AbortHandler:
.weak FiqHandler
.globl FiqHandler
FiqHandler:
.weak _halt32
.globl _halt32
_halt32:
mrs r0, CPSR
orr r0, #I_BIT | F_BIT
msr CPSR_c, r0
.loop: b .loop

3
readme.txt
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@ -39,6 +39,9 @@ AVR-AT90CANx-GCC - Port on AVR AT90CAN128, not complete yet.
*** Releases ***
*****************************************************************************
*** 0.5.4 ***
- Begun the work for the port on Atmel AT91SAM7X256 (and similar models).
*** 0.5.3 ***
- Removed the chMsgSendTimeout() API, it was conceptually flawed because,
after sending a message, the sender *has* to wait for the answer or