From 611ff4d2ed3e92f9f577f7dc320b1557e96d381f Mon Sep 17 00:00:00 2001 From: gdisirio Date: Thu, 13 Mar 2008 14:41:17 +0000 Subject: [PATCH] git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@231 35acf78f-673a-0410-8e92-d51de3d6d3f4 --- demos/ARMCM3-STM32F103-GCC/Makefile | 165 ++++++++++++++++++++++++++ demos/ARMCM3-STM32F103-GCC/board.c | 28 +++++ demos/ARMCM3-STM32F103-GCC/board.h | 25 ++++ demos/ARMCM3-STM32F103-GCC/chconf.h | 169 +++++++++++++++++++++++++++ demos/ARMCM3-STM32F103-GCC/main.c | 57 +++++++++ ports/ARMCM3/chcore.c | 70 +++++++++++ ports/ARMCM3/chcore.h | 103 +++++++++++++++++ ports/ARMCM3/chtypes.h | 44 +++++++ ports/ARMCM3/crt0.s | 172 ++++++++++++++++++++++++++++ readme.txt | 9 +- 10 files changed, 839 insertions(+), 3 deletions(-) create mode 100644 demos/ARMCM3-STM32F103-GCC/Makefile create mode 100644 demos/ARMCM3-STM32F103-GCC/board.c create mode 100644 demos/ARMCM3-STM32F103-GCC/board.h create mode 100644 demos/ARMCM3-STM32F103-GCC/chconf.h create mode 100644 demos/ARMCM3-STM32F103-GCC/main.c create mode 100644 ports/ARMCM3/chcore.c create mode 100644 ports/ARMCM3/chcore.h create mode 100644 ports/ARMCM3/chtypes.h create mode 100644 ports/ARMCM3/crt0.s diff --git a/demos/ARMCM3-STM32F103-GCC/Makefile b/demos/ARMCM3-STM32F103-GCC/Makefile new file mode 100644 index 000000000..2de43bf20 --- /dev/null +++ b/demos/ARMCM3-STM32F103-GCC/Makefile @@ -0,0 +1,165 @@ +# +# !!!! 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-none-eabi- +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 = cortex-m3 + +# 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 +SRC = ../../ports/ARMCM3/chcore.c \ + ../../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 ASM source files here +ASMSRC = +#../../ports/ARMCM3/crt0.s + +# List all user directories here +UINCDIR = ../../src/include ../../src/lib ../../ports/ARMCM3 + +# List the user directory to look for the libraries here +ULIBDIR = + +# List all user libraries here +ULIBS = + +# 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 +#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) +COBJS = $(SRC:.c=.o) +ASMOBJS = $(ASMSRC:.s=.o) +OBJS = $(ASMOBJS) $(COBJS) +LIBS = $(DLIBS) $(ULIBS) +MCFLAGS = -mcpu=$(MCU) -mthumb + +ASFLAGS = $(MCFLAGS) -mthumb -Wa,-amhls=$(<:.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 $(LIBDIR) +ODFLAGS = -x --syms + +# Generate dependency information +CPFLAGS += -MD -MP -MF .dep/$(@F).d + +# +# Makefile rules +# + +all: $(OBJS) $(PROJECT).elf $(PROJECT).hex $(PROJECT).bin $(PROJECT).dmp + +$(COBJS) : %.o : %.c + @echo + $(CC) -c $(CPFLAGS) -I . $(INCDIR) $< -o $@ + +$(ASMOBJS) : %.o : %.s + @echo + $(AS) -c $(ASFLAGS) -I . $(INCDIR) $< -o $@ + +%elf: $(OBJS) + @echo + $(CC) $(ASMOBJS) $(COBJS) $(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 $(SRC:.c=.c.bak) + -rm -f $(SRC:.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 *** diff --git a/demos/ARMCM3-STM32F103-GCC/board.c b/demos/ARMCM3-STM32F103-GCC/board.c new file mode 100644 index 000000000..ec5ac2fb4 --- /dev/null +++ b/demos/ARMCM3-STM32F103-GCC/board.c @@ -0,0 +1,28 @@ +/* + 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 . +*/ + +#include + +/* + * Hardware initialization goes here. + * NOTE: Interrupts are still disabled. + */ +void hwinit(void) { + +} diff --git a/demos/ARMCM3-STM32F103-GCC/board.h b/demos/ARMCM3-STM32F103-GCC/board.h new file mode 100644 index 000000000..88459c3e7 --- /dev/null +++ b/demos/ARMCM3-STM32F103-GCC/board.h @@ -0,0 +1,25 @@ +/* + 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 . +*/ + +#ifndef _BOARD_H_ +#define _BOARD_H_ + +#define BOARD_OLIMEX_STM32_P103 + +#endif /* _BOARD_H_ */ diff --git a/demos/ARMCM3-STM32F103-GCC/chconf.h b/demos/ARMCM3-STM32F103-GCC/chconf.h new file mode 100644 index 000000000..c8817f85c --- /dev/null +++ b/demos/ARMCM3-STM32F103-GCC/chconf.h @@ -0,0 +1,169 @@ +/* + 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 . +*/ + +/* + * 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 must be recompiled with the GCC option \p + * -ffixed-. + */ +//#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_ */ + +/** @} */ diff --git a/demos/ARMCM3-STM32F103-GCC/main.c b/demos/ARMCM3-STM32F103-GCC/main.c new file mode 100644 index 000000000..60e53abd3 --- /dev/null +++ b/demos/ARMCM3-STM32F103-GCC/main.c @@ -0,0 +1,57 @@ +/* + 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 . +*/ + +#include + +/* + * Red LEDs blinker thread, times are in milliseconds. + */ +static WorkingArea(waThread1, 64); +static msg_t Thread1(void *arg) { + + while (TRUE) { + chThdSleep(1000); + } + return 0; +} + +/* + * 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(); + + /* + * Creates the blinker threads. + */ + chThdCreate(NORMALPRIO, 0, waThread1, sizeof(waThread1), Thread1, NULL); + + /* + * Normal main() thread activity, in this demo it does nothing except + * sleeping in a loop. + */ + while (TRUE) + chThdSleep(1000); + return 0; +} diff --git a/ports/ARMCM3/chcore.c b/ports/ARMCM3/chcore.c new file mode 100644 index 000000000..a98da808b --- /dev/null +++ b/ports/ARMCM3/chcore.c @@ -0,0 +1,70 @@ +/* + 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 . +*/ + +#include + +/* + * System idle thread loop. + */ +void _IdleThread(void *p) { + + while (TRUE) { + } +} + +/* + * System console message (not implemented). + */ +void chSysPuts(char *msg) { +} + +/* + * Context switch. + */ +void chSysSwitchI(Thread *otp, Thread *ntp) { + register struct intctx * volatile sp asm("sp"); /* Don't ask... */ + +#ifdef CH_CURRP_REGISTER_CACHE + asm ("" : : : "r4", "r5", "r6", "r8", "r9", "r10", "r11", "lr"); +#else + asm ("" : : : "r4", "r5", "r6", "r7", "r8", "r9", "r10", "r11", "lr"); +#endif + otp->p_ctx.r13 = sp; + sp = ntp->p_ctx.r13; +} + +/* + * System halt. + */ +__attribute__((naked, weak)) +void chSysHalt(void) { + + while (TRUE) { + } +} + +__attribute__((naked, weak)) +void threadstart(void) { + + chSysUnlock(); + asm volatile ("mov r0, r5 \n\t" \ + "blx r4 \n\t" \ + "bl chThdExit "); + +} diff --git a/ports/ARMCM3/chcore.h b/ports/ARMCM3/chcore.h new file mode 100644 index 000000000..706f49c28 --- /dev/null +++ b/ports/ARMCM3/chcore.h @@ -0,0 +1,103 @@ +/* + 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 . +*/ + +#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 *)((uint8_t *)workspace + \ + wsize - \ + sizeof(struct intctx)); \ + tp->p_ctx.r13->r4 = pf; \ + tp->p_ctx.r13->r5 = arg; \ + tp->p_ctx.r13->lr = threadstart; \ +} + +#define chSysLock() asm("cpsid i") +#define chSysUnlock() asm("cpsie i") + +#define INT_REQUIRED_STACK 0x10 +#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) uint32_t s[UserStackSize(n) >> 2]; + +#define chSysIRQEnterI() { \ +} + +#define chSysIRQExitI() { \ + asm("b IrqCommon \n\t"); \ +} + +/* 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_ */ diff --git a/ports/ARMCM3/chtypes.h b/ports/ARMCM3/chtypes.h new file mode 100644 index 000000000..2fd609b1f --- /dev/null +++ b/ports/ARMCM3/chtypes.h @@ -0,0 +1,44 @@ +/* + 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 . +*/ + +#ifndef _CHTYPES_H_ +#define _CHTYPES_H_ + +#define __need_NULL +#define __need_size_t +#include + +#if !defined(_STDINT_H) && !defined(__STDINT_H_) +#include +#endif + +typedef int8_t bool_t; +typedef uint8_t tmode_t; +typedef uint8_t tstate_t; +typedef uint16_t tid_t; +typedef uint32_t tprio_t; +typedef int32_t msg_t; +typedef int32_t eventid_t; +typedef uint32_t eventmask_t; +typedef uint32_t systime_t; +typedef int32_t cnt_t; + +#define INLINE inline + +#endif /* _CHTYPES_H_ */ diff --git a/ports/ARMCM3/crt0.s b/ports/ARMCM3/crt0.s new file mode 100644 index 000000000..91aec34b6 --- /dev/null +++ b/ports/ARMCM3/crt0.s @@ -0,0 +1,172 @@ +/* + 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 . +*/ + +/* + * 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: + +.loop: b .loop diff --git a/readme.txt b/readme.txt index 6b7b55461..760a0dd5e 100644 --- a/readme.txt +++ b/readme.txt @@ -36,6 +36,9 @@ ARM7-LPC214x-GCC - ChibiOS/RT port for ARM7 LPC2148, the demo targets ARM7-LPC214x-GCC-min - Minimal demo for LPC214X. ARM7-AT91SAM7X-GCC - Port for Atmel AT91SAM7X256. The demo program targets the Olimex SAM7-EX256 board. +ARMCM3-ST32F103-GCC - ARM Cortex-M3 port, work in progress, not complete + yet. The demo will target the Olimex STM32-P103 + board. AVR-AVRmega128-GCC - Port on AVRmega128, experimental. A special thanks to Vladimir for the work done on the AVR port. The demo program targets the Olimex AVR-MT-128 mini terminal @@ -47,8 +50,6 @@ AVR-AT90CANx-GCC - Port on AVR AT90CAN128, not tested on hardware yet. ***************************************************************************** - Look into importing *or* implementing a TCP/IP stack and a File System. -- Start the work on a Cortex-M3 port as soon GCC 4.3.0 will be released and - incorporated in YAGARTO. - Evaluate other architectures for a possible ChibiOS/RT port. An important selection parameter will be the availability of FOSS toolchains. Currently we are evaluating the Cortex-M3 and the MSP430. @@ -72,7 +73,9 @@ AVR-AT90CANx-GCC - Port on AVR AT90CAN128, not tested on hardware yet. - Removed the -falign-functions=16 option from the AT91SAM7X demo makefiles, the Atmel chip does not require it, the option is still present on the LPC21xx demos. This saves significant program space. -- Fixes to the doxigen documentation. +- Started work on ARM Cortex-M3 architecture. The target chip is the ST32F103 + on a Olimex STM32-P103 board. +- Various fixes to the doxigen documentation. *** 0.6.0 *** - Code refactory, all the old sized-integer definitions like LONG32, UWORD16