# $Id: Makefile.avr,v 1.27 2010/12/22 21:13:09 dak664 Exp $
	
.SUFFIXES:

### Optimization setting. $make OPTI=0 for easier debugging of changed source file(s)
ifndef OPTI
  OPTI=s
endif

### Define the CPU directory of the AVR port
CONTIKI_CPU=$(CONTIKI)/cpu/avr

### These directories will be searched for the specified source files
### TARGETLIBS are platform-specific routines in the contiki library path
CONTIKI_CPU_DIRS            = . dev
AVR        = clock.c mtarch.c eeprom.c flash.c rs232.c leds-arch.c \
             watchdog.c rtimer-arch.c bootloader.c
ELFLOADER  = elfloader.c elfloader-avr.c symtab-avr.c
TARGETLIBS = random.c leds.c

ifdef USB
### Add the directories for the USB stick and remove the default rs232 driver
CONTIKI_CPU_DIRS            += dev/usb dev/usb/serial dev/usb/rndis dev/usb/storage
CONTIKI_TARGET_SOURCEFILES  += $(USB)
//AVR        = clock.c mtarch.c eeprom.c flash.c leds-arch.c watchdog.c rtimer-arch.c
endif

#For a coffee file system, the application makefile can define COFFEE_FILES=n
#to select the type and COFFEE_ADDRESS=0xaaaaaaaa as the starting byte address.
#If only one is define the other will use the (Raven webserver 1284p) defaults
#of a static file system in program flash starting at 0x10000 (word address=0x8000)
#For program flash the starting address is rounded down to a page boundary in cfs-coffee-arch.h
#It should be rounded down here too if someone can figure out how :)

ifdef COFFEE_ADDRESS              #if address is passed force definition of COFFEE_FILES
 ifndef COFFEE_FILES              #use program flash for static file system if not specified
  COFFEE_FILES=3
 endif
endif

ifdef COFFEE_FILES                #if files are defined force definition of COFFEE_ADDRESS
 ifndef COFFEE_ADDRESS
  ifeq ($(COFFEE_FILES), 1)       #1=eeprom static
   COFFEE_ADDRESS=DEFAULT
  else ifeq ($(COFFEE_FILES), 2)  #2=eeprom dynamic
   COFFEE_ADDRESS=DEFAULT
  else ifeq ($(COFFEE_FILES), 3)  #3=program flash static
   COFFEE_ADDRESS=0x14000
  else ifeq ($(COFFEE_FILES), 4)  #4=program flash dynamic
   COFFEE_ADDRESS=0x10000
  else
   print "Unsupported coffee file type!"
  endif
 endif
 COFFEE_ADDRESS1 = $(shell echo $$(( $(COFFEE_ADDRESS) + 1 )))
 CONTIKI_TARGET_SOURCEFILES += cfs-coffee.c cfs-coffee-arch.c 
 CFLAGS += -DCOFFEE_FILES=$(COFFEE_FILES) -DCOFFEE_ADDRESS=$(COFFEE_ADDRESS)
 ifneq ($(COFFEE_ADDRESS), DEFAULT)
  LDFLAGS+= -Wl,--section-start=.coffeefiles=$(COFFEE_ADDRESS)
 endif

 #If $make invokation passed starting address use phony target to force synchronization of source to .coffeefiles section
 #Warning: recompilation will not be forced if the starting address is then dropped, with dire consequences:
 # -->Source that uses COFFEE_FILES and read macros for conditional compilation will be left hanging!
 # -->Object modules that used .coffeesection will overlap the .data section.
 # -->$make clean is safest.
#ifeq ($(origin COFFEE_ADDRESS), command line)
# ifeq ($(COFFEE_FILES), 2)      #safest to force recompilation even if eeprom address is changed, might have been switched from flash
   .PHONY : coffee
   coffee:
   $(OBJECTDIR)/cfs-coffee-arch.o    : coffee      #cfs-coffee-arch uses COFFEE_FILES, COFFEE_ADDRESS
   $(OBJECTDIR)/contiki-raven-main.o : coffee      #Raven Webserver uses COFFEE_FILES
   $(OBJECTDIR)/httpd-fs.o           : coffee      #this file contains httpd-fsdata.c which has the .coffeesection data
   $(OBJECTDIR)/httpd.c.o            : coffee      #uses defines to read from file system
   $(OBJECTDIR)/httpd-cgi.o          : coffee      #uses defines to read from file system
   $(OBJECTDIR)/cfs-coffee.o         : coffee      #core routine requires recompilation

#endif
#endif

endif

CONTIKI_TARGET_SOURCEFILES += $(AVR) $(SENSORS) \
                              $(SYSAPPS) $(ELFLOADER) \
                              $(TARGETLIBS)

CONTIKI_SOURCEFILES        += $(CONTIKI_TARGET_SOURCEFILES)


### Compiler definitions
CC       = avr-gcc
CXX      = avr-g++
LD       = avr-gcc
AS       = avr-as
AR       = avr-ar
ELF_SIZE = avr-size -C --mcu=$(MCU)
OBJCOPY  = avr-objcopy
STRIP    = avr-strip
CFLAGSNO = -Wall -mmcu=$(MCU) -gdwarf-2 -fno-strict-aliasing \
            -I$(CONTIKI)/platform/$(TARGET) \
            -I. -I$(CONTIKI)/core -I$(CONTIKI_CPU) $(USB_INCLUDES) \
            $(CONTIKI_PLAT_DEFS)
CFLAGS   += $(CFLAGSNO) -O$(OPTI)
ASFLAGS  += -mmcu=$(MCU)
ifndef BOOTLOADER_START
  BOOTLOADER_START = 0x1F800
endif

LDFLAGS  += -mmcu=$(MCU) -Wl,-Map=contiki-$(TARGET).map \
           -Wl,--section-start=.bootloader=$(BOOTLOADER_START)

SMALL ?= 1

### These flags help significantly reduce the code size
ifeq ($(SMALL),1)
CFLAGS += -ffunction-sections
CFLAGS += -fdata-sections
LDFLAGS += -Wl,--gc-sections
endif # SMALL

### Setup directory search path for source files

CONTIKI_TARGET_DIRS_CONCAT = ${addprefix $(CONTIKI)/platform/$(TARGET)/, \
                               $(CONTIKI_TARGET_DIRS)}

### Compilation rules

$(OBJECTDIR)/%.o: %.c | $(OBJECTDIR)
	$(CC) $(CFLAGS) -c $< -o $@

%.o: %.c
	$(CC) $(CFLAGS) -c $< -o $@

$(OBJECTDIR)/%.o: %.cpp | $(OBJECTDIR)
	$(CXX) $(CFLAGS) -c $< -o $@

%.o: %.cpp
	$(CXX) $(CFLAGS) -c $< -o $@

%.ko: %.o
	$(STRIP) -K _init -K _fini --strip-unneeded -g -x $< -o $@

%.elf:	%.co $(PROJECT_OBJECTFILES) contiki-$(TARGET).a symbols.o
	$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(filter-out %.a,$^) $(filter %.a,$^) $(LDLIBS)
#Allow top-level makefile to always show size even when build is up to date
ifndef NOAVRSIZE
	avr-size -C --mcu=$(MCU) $@
endif

%.hex: %.out
	$(OBJCOPY) $^ -j .text -j .data -O ihex $@

%.ihex: %.out
	$(OBJCOPY) $^ -O ihex $@

# Add a namelist to the kernel
%.out: %.co $(PROJECT_OBJECTFILES) contiki-$(TARGET).a
	cp ${CONTIKI}/tools/empty-symbols.c symbols.c
	cp ${CONTIKI}/tools/empty-symbols.h symbols.h
	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(LIBC) symbols.c
ifdef SYMBOLS
	$(CONTIKI)/tools/avr-make-symbols $@ 
	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(LIBC) symbols.c
	$(CONTIKI)/tools/avr-make-symbols $@
	$(CC) $(LDFLAGS) $(CFLAGS) -o $@ $^ $(LIBC) symbols.c
endif

#%.hex: %.elf
#	$(OBJCOPY) -R .eeprom -R .fuse -R .signature $^ -O ihex $@

%.eep: %.out
	-$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \
	--change-section-lma .eeprom=0 -O ihex $^ $@


%-stripped.o: %.c
	$(CC) $(CFLAGS) -c $< -o $@
	$(STRIP) --strip-unneeded -g -x $@

#%.ce: %.c
#	$(CC) $(CFLAGS) -c $< -o $@
#	$(STRIP) --strip-unneeded -g -x $@

#%.ce: 	%.co
#	$(LD) -i -r --unresolved-symbols=ignore-in-object-files -mavr5 -o $@ $^
#	$(STRIP) --strip-unneeded -g -x $@

%.co: %.c
	cp $(CONTIKI)/tools/empty-symbols.c symbols.c
	cp $(CONTIKI)/tools/empty-symbols.h symbols.h
	$(CC) $(CFLAGS) -DAUTOSTART_ENABLE -c $< -o $@

%-stripped.o: %.o
	$(STRIP) --strip-unneeded -g -x -o $@ $<

%.o: ${CONTIKI_TARGET}/loader/%.S
	$(AS) -o $(notdir $(<:.S=.o)) $<

%.srec: %.$(TARGET)
	$(OBJCOPY) -O srec $< $@

### Upload image
#Let avrdude use defaults if port or programmer not defined
AVRDUDE ?= avrdude
ifdef AVRDUDE_PORT
 AVRDUDE_PORT:=-P $(AVRDUDE_PORT)
endif
ifdef AVRDUDE_PROGRAMMER
 AVRDUDE_PROGRAMMER:=-c $(AVRDUDE_PROGRAMMER)
endif
ifdef AVRDUDE_MCU
 AVRDUDE_MCU:=-p $(AVRDUDE_MCU)
else
 AVRDUDE_MCU:=-p $(MCU)
endif
%.u: %.hex
	$(AVRDUDE) $(AVRDUDE_MCU) $(AVRDUDE_OPTIONS) $(AVRDUDE_PORT) $(AVRDUDE_PROGRAMMER) -U flash:w:$<

%.eu: %.eep
	$(AVRDUDE) $(AVRDUDE_MCU) ${AVRDUDE_OPTIONS} ${AVRDUDE_PORT} ${AVRDUDE_PROGRAMMER} -U eeprom:w:$<

symbols.c:
	cp ${CONTIKI}/tools/empty-symbols.c symbols.c
	cp ${CONTIKI}/tools/empty-symbols.h symbols.h