1# ---------------------------------------------------------------------------- 2# ATMEL Microcontroller Software Support 3# ---------------------------------------------------------------------------- 4# Copyright (c) 2010, Atmel Corporation 5# 6# All rights reserved. 7# 8# Redistribution and use in source and binary forms, with or without 9# modification, are permitted provided that the following condition is met: 10# 11# - Redistributions of source code must retain the above copyright notice, 12# this list of conditions and the disclaimer below. 13# 14# Atmel's name may not be used to endorse or promote products derived from 15# this software without specific prior written permission. 16# 17# DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR 18# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE 20# DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT, 21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, 23# OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 24# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 25# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 26# EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27# ---------------------------------------------------------------------------- 28 29#------------------------------------------------------------------------------- 30# User-modifiable options 31#------------------------------------------------------------------------------- 32 33ifeq ('$(CHIP)','') 34$(error CHIP not defined) 35endif 36 37include sam_series.mk 38 39# fill the needed variables 40ifeq ($(CHIP),$(findstring $(CHIP), $(SAM3N))) 41 42BOARD:=SAM3N_EK 43SERIES:=sam3n 44 45else ifeq ($(CHIP),$(findstring $(CHIP), $(SAM3S))) 46 47BOARD:=SAM3S_EK 48SERIES:=sam3s 49 50else ifeq ($(CHIP),$(findstring $(CHIP), $(SAM3SD8))) 51 52BOARD:=SAM3S_EK2 53SERIES:=sam3sd8 54 55else ifeq ($(CHIP),$(findstring $(CHIP), $(SAM3U))) 56 57BOARD:=SAM3U_EK 58SERIES:=sam3u 59 60else ifeq ($(CHIP),$(findstring $(CHIP), $(SAM3XA))) 61 62BOARD:=SAM3X_EK 63SERIES:=sam3xa 64 65else ifeq ($(CHIP),$(findstring $(CHIP), $(SAM4S))) 66 67BOARD:=SAM4S_EK 68SERIES:=sam4s 69 70endif 71 72 73# Defines which are the available memory targets for the device. 74MEMORIES = sram flash 75 76# Optimization level, put in comment for debugging 77OPTIMIZATION = -Os 78 79# Output directories 80BIN = $(CHIP)_bin 81OBJ = $(CHIP)_obj 82 83# Output file basename 84OUTPUT_BIN = $(BIN)/cmsis_example_$(BOARD)_$(CHIP) 85 86# GCC toolchain provider 87GCC_TOOLCHAIN=gcc_atmel 88 89#------------------------------------------------------------------------------- 90# Tools 91#------------------------------------------------------------------------------- 92 93# Toolchain prefix when cross-compiling 94CROSS_COMPILE = arm-none-eabi- 95 96CMSIS_ROOT=../../.. 97CMSIS_PATH=$(CMSIS_ROOT)/CMSIS/Include 98SAM_PATH=$(CMSIS_ROOT)/Device/ATMEL 99DEVICE_PATH=$(SAM_PATH)/$(SERIES)/source 100 101LIBS = -Wl,--start-group -lgcc -lc -Wl,--end-group 102 103LIB_PATH+=-L=/lib/thumb2 104LIB_PATH+=-L"$(realpath $(DEVICE_PATH)/$(GCC_TOOLCHAIN))" 105 106# Compilation tools 107CC = $(CROSS_COMPILE)gcc 108LD = $(CROSS_COMPILE)ld 109SIZE = $(CROSS_COMPILE)size 110STRIP = $(CROSS_COMPILE)strip 111OBJCOPY = $(CROSS_COMPILE)objcopy 112GDB = $(CROSS_COMPILE)gdb 113NM = $(CROSS_COMPILE)nm 114RM = rm 115 116# Flags 117INCLUDES := -I"$(CMSIS_PATH)" 118INCLUDES += -I"$(SAM_PATH)" 119INCLUDES += -I"$(SAM_PATH)/$(SERIES)/include" 120 121CFLAGS += -Wall -Wchar-subscripts -Wcomment -Wformat=2 -Wimplicit-int 122CFLAGS += -Werror-implicit-function-declaration -Wmain -Wparentheses 123CFLAGS += -Wsequence-point -Wreturn-type -Wswitch -Wtrigraphs -Wunused 124CFLAGS += -Wuninitialized -Wunknown-pragmas -Wfloat-equal -Wundef 125CFLAGS += -Wshadow -Wpointer-arith -Wbad-function-cast -Wwrite-strings 126CFLAGS += -Wsign-compare -Waggregate-return -Wstrict-prototypes 127CFLAGS += -Wmissing-prototypes -Wmissing-declarations 128CFLAGS += -Wformat -Wmissing-format-attribute -Wno-deprecated-declarations 129CFLAGS += -Wpacked -Wredundant-decls -Wnested-externs -Winline -Wlong-long 130CFLAGS += -Wunreachable-code 131CFLAGS += -Wcast-align 132#CFLAGS += -Wmissing-noreturn 133#CFLAGS += -Wconversion 134 135# To reduce application size use only integer printf function. 136CFLAGS += -Dprintf=iprintf 137 138# CFLAGS += -mlong-calls -Wall 139# CFLAGS += -ansi 140CFLAGS += -std=c99 141CFLAGS += --param max-inline-insns-single=500 -mcpu=cortex-m3 -mthumb -ffunction-sections 142CFLAGS += -g $(OPTIMIZATION) $(INCLUDES) -D__$(CHIP)__ -DBOARD=$(BOARD) 143ASFLAGS = -mcpu=cortex-m3 -mthumb -Wall -g $(OPTIMIZATION) $(INCLUDES) -D__$(CHIP)__ -D__ASSEMBLY__ 144LDFLAGS= -mcpu=cortex-m3 -mthumb -Wl,--cref -Wl,--check-sections -Wl,--gc-sections -Wl,--entry=Reset_Handler -Wl,--defsym=STACK_SIZE=0x200 -Wl,--unresolved-symbols=report-all -Wl,--warn-common -Wl,--warn-section-align -Wl,--warn-unresolved-symbols 145#LD_OPTIONAL=-Wl,--print-gc-sections -Wl,--stats 146 147#------------------------------------------------------------------------------- 148# Files 149#------------------------------------------------------------------------------- 150 151# Directories where source files can be found 152 153VPATH += .. 154VPATH += $(DEVICE_PATH) 155VPATH += $(DEVICE_PATH)/$(GCC_TOOLCHAIN) 156 157# Objects built from C source files 158C_OBJECTS += main.o 159C_OBJECTS += startup_$(SERIES).o 160C_OBJECTS += system_$(SERIES).o 161 162# Append OBJ and BIN directories to output filename 163OUTPUT := $(BIN)/$(OUTPUT_BIN) 164 165#------------------------------------------------------------------------------- 166# Rules 167#------------------------------------------------------------------------------- 168 169all: $(BIN) $(OBJ) $(MEMORIES) 170 171$(BIN) $(OBJ): 172 -@mkdir $@ 173 174define RULES 175C_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(C_OBJECTS)) 176ASM_OBJECTS_$(1) = $(addprefix $(OBJ)/$(1)_, $(ASM_OBJECTS)) 177 178$(1): $$(ASM_OBJECTS_$(1)) $$(C_OBJECTS_$(1)) 179 $(CC) $(LIB_PATH) $(LDFLAGS) $(LD_OPTIONAL) -T"$(realpath $(DEVICE_PATH)/$(GCC_TOOLCHAIN)/$(CHIP)_$$@.ld)" -Wl,-Map,"$(OUTPUT_BIN)_$$@.map" -o "$(OUTPUT_BIN)_$$@.elf" $$^ $(LIBS) 180 @$(NM) "$(OUTPUT_BIN)_$$@.elf" >"$(OUTPUT_BIN)_$$@.elf.txt" 181 @$(OBJCOPY) -O binary "$(OUTPUT_BIN)_$$@.elf" "$(OUTPUT_BIN)_$$@.bin" 182 @$(SIZE) $$^ "$(OUTPUT_BIN)_$$@.elf" 183 184$$(C_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.c Makefile $(OBJ) $(BIN) 185 @$(CC) $(CFLAGS) -D$(1) -c -o $$@ $$< 186 187$$(ASM_OBJECTS_$(1)): $(OBJ)/$(1)_%.o: %.S Makefile $(OBJ) $(BIN) 188 @$(CC) $(ASFLAGS) -D$(1) -c -o $$@ $$< 189 190debug_$(1): $(1) 191 $(GDB) -x "$(CHIP)_$(1).gdb" -ex "reset" -readnow -se "$(OUTPUT_BIN)_$(1).elf" 192endef 193 194$(foreach MEMORY, $(MEMORIES), $(eval $(call RULES,$(MEMORY)))) 195 196clean: 197 -$(RM) -fR $(OBJ) $(BIN) 198