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# $Id: Makefile 2285 2014-04-16 20:12:57Z arune $

BIOS_VERSION   = 0x1342

# Paths: set default pathnames if they are not

# passed on from parent Makefile.

ifndef TARGET

TARGET = bios

endif

ifndef LIBDIR

LIBDIR = .

endif

ifndef SRCDIR

SRCDIR = bios

endif

ifndef CFGDIR

CFGDIR = ..

endif

LIBNAME = lib$(TARGET)

include $(CFGDIR)/bios.inc

include $(CFGDIR)/../system.inc

# VPATH: setup search path for source files.

vpath

vpath %.c $(SRCDIR):$(LIBDIR)

vpath %.S $(SRCDIR):$(LIBDIR)

# List source files here. (C dependencies are automatically generated.)

SOURCES =	vectors.S \

			bios_export.c \

			bios.c \

			flash.c

ifeq ($(CAN_CONTROLLER),MCP2515)

SOURCES += drivers/can/mcp2515/mcp2515.c

CAN_DRIVER_H = \<drivers/can/mcp2515/mcp2515.h\>

endif

# Start address for linking pass 1, will be overridden for optimizing pass

#BIOS_START = 0x100

# Optimization level, can be [0, 1, 2, 3, s]. 

# 0 = turn off optimization. s = optimize for size.

# (Note: 3 is not always the best optimization level. See avr-libc FAQ.)

OPT = s

#OPT = 3

# Debugging format.

# Native formats for AVR-GCC's -g are stabs [default], or dwarf-2.

# AVR (extended) COFF requires stabs, plus an avr-objcopy run.

DEBUG = stabs

#DEBUG = dwarf-2

# List any extra directories to look for include files here.

# Each directory must be separated by a space.

EXTRAINCDIRS = $(LIBDIR) $(SRCDIR)

# Compiler flag to set the C Standard level.

# c89   - "ANSI" C

# gnu89 - c89 plus GCC extensions

# c99   - ISO C99 standard (not yet fully implemented)

# gnu99 - c99 plus GCC extensions

CSTANDARD = -std=gnu99

# Place -D or -U options here

CDEFS = -DF_CPU=$(F_CPU) \

		-DCAN_DRIVER_H=$(CAN_DRIVER_H) \

		-DBIOS_VERSION=$(BIOS_VERSION)

# Place -I options here

CINCS =

# Compiler flags.

#  -g*:          generate debugging information

#  -O*:          optimization level

#  -f...:        tuning, see GCC manual and avr-libc documentation

#  -Wall...:     warning level

#  -Wa,...:      tell GCC to pass this to the assembler.

#    -adhlns...: create assembler listing

CFLAGS = -mmcu=$(MCU) -I.

CFLAGS += -g$(DEBUG)

CFLAGS += $(CDEFS) $(CINCS)

CFLAGS += -O$(OPT)

CFLAGS += -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums

CFLAGS += -Wall -Wstrict-prototypes

CFLAGS += -Wa,-adhlns=$(@:.o=.lst)

CFLAGS += $(patsubst %,-I%,$(EXTRAINCDIRS))

CFLAGS += $(CSTANDARD)

CFLAGS += $(GENDEPFLAGS)

# Assembler flags.

#  -Wa,...:   tell GCC to pass this to the assembler.

#  -ahlms:    create listing

#  -gstabs:   have the assembler create line number information; note that

#             for use in COFF files, additional information about filenames

#             and function names needs to be present in the assembler source

#             files -- see avr-libc docs [FIXME: not yet described there]

##ASFLAGS = -Wa,-adhlns=$(<:.S=.lst),-gstabs 

ASFLAGS = -mmcu=$(MCU) -x assembler-with-cpp

ASFLAGS += -Wa,-g$(DEBUG)

#Additional libraries.

# Minimalistic printf version

PRINTF_LIB_MIN = -Wl,-u,vfprintf -lprintf_min

# Floating point printf version (requires MATH_LIB = -lm below)

PRINTF_LIB_FLOAT = -Wl,-u,vfprintf -lprintf_flt

PRINTF_LIB = 

# Minimalistic scanf version

SCANF_LIB_MIN = -Wl,-u,vfscanf -lscanf_min

# Floating point + %[ scanf version (requires MATH_LIB = -lm below)

SCANF_LIB_FLOAT = -Wl,-u,vfscanf -lscanf_flt

SCANF_LIB = 

MATH_LIB = -lm

# External memory options

# 64 KB of external RAM, starting after internal RAM (ATmega128!),

# used for variables (.data/.bss) and heap (malloc()).

#EXTMEMOPTS = -Wl,-Tdata=0x801100,--defsym=__heap_end=0x80ffff

# 64 KB of external RAM, starting after internal RAM (ATmega128!),

# only used for heap (malloc()).

#EXTMEMOPTS = -Wl,--defsym=__heap_start=0x801100,--defsym=__heap_end=0x80ffff

EXTMEMOPTS =

BIOS_START = $(shell $(AWK) '/0x[0-9a-f]+.*__bios_optimal_start/ { print $$1 }' bios.map)

BIOSOPTS = -Wl,--defsym,__bios_start=$(BIOS_START),--defsym,__boot_start=$(BOOT_START),-T$(LIBDIR)/ldscripts/$(MCU).ld

# Linker flags.

#  -Wl,...:     tell GCC to pass this to linker.

#    -Map:      create map file

#    --cref:    add cross reference to  map file

LDFLAGS = -mmcu=$(MCU) -Wl,-Map=$(TARGET).map,--cref

LDFLAGS += $(EXTMEMOPTS)

LDFLAGS += $(BIOSOPTS)

LDFLAGS += $(PRINTF_LIB) $(SCANF_LIB) $(MATH_LIB)

# ---------------------------------------------------------------------------

# Define Messages

# English

MSG_ERRORS_NONE = Errors: none

MSG_BEGIN = -------- begin --------

MSG_END = --------  end  --------

MSG_SIZE_BEFORE = Size before: 

MSG_SIZE_AFTER = Size after:

MSG_COFF = Converting to AVR COFF:

MSG_EXTENDED_COFF = Converting to AVR Extended COFF:

MSG_FLASH = Creating load file for Flash:

MSG_EEPROM = Creating load file for EEPROM:

MSG_EXTENDED_LISTING = Creating Extended Listing:

MSG_SYMBOL_TABLE = Creating Symbol Table:

MSG_LINKING = Linking:

MSG_COMPILING = Compiling:

MSG_ASSEMBLING = Assembling:

MSG_DEPEND = Generating dependencies:

MSG_CLEANING = Cleaning project:

MSG_CREATE = Creating:

# Define all object files.

OBJ = $(filter %.o,$(SOURCES:.c=.o) $(SOURCES:.S=.o))

# Define all listing files.

LST = $(OBJ:.o=.lst)

# Define all dependency files.

DEP = $(OBJ:.o=.d)

BUILDDIRS = $(sort $(filter-out ./,$(dir $(OBJ))))

# Compiler flags to generate dependency files.

GENDEPFLAGS = -MMD -MP

# Default target.

all: check_binaries sizebefore buildtree build lib sizeafter

build: elf hex eep lss sym

elf: $(TARGET).elf

hex: $(TARGET).hex

eep: $(TARGET).eep

lss: $(TARGET).lss 

sym: $(TARGET).sym

buildtree: $(BUILDDIRS)

# Display size of file.

HEXSIZE = $(SIZE) --target=ihex $(TARGET).hex

ELFSIZE = $(SIZE) $(TARGET).elf

sizebefore:

	@if [ -f $(TARGET).elf ]; then $(ECHO); $(ECHO) $(MSG_SIZE_BEFORE); $(ELFSIZE); $(ECHO); fi

sizeafter:

	@if [ -f $(TARGET).elf ]; then $(ECHO); $(ECHO) $(MSG_SIZE_AFTER); $(ELFSIZE); $(ECHO); fi

# Generate config.h from bios.inc

#HWID = `$(UUIDGEN) | $(MD5SUM) | $(CUT) -c 1-8`

HWID := $(shell $(UUIDGEN) | $(MD5SUM) | $(CUT) -c 1-8)

config.h: $(CFGDIR)/bios.inc

	@$(ECHO) Generating $@

	@$(CAT) $^ | $(AWK) -v apa=0x$(HWID) 'BEGIN {  } /.*/ {sub(/^NODE_HW_ID=<GENERATE_HW>/,"NODE_HW_ID="apa)}{print} END {  }' > tmpfile

	@$(CAT) tmpfile > $^

	@$(RM) tmpfile

	@$(ECHO) "/* This file is automatically generated. Do not edit. */" > $@

	@$(ECHO) "" >> $@

	@$(ECHO) "#ifndef CONFIG_H_" >> $@

	@$(ECHO) "#define CONFIG_H_" >> $@

	@$(ECHO) "" >> $@

	@$(CAT) $^ | $(AWK) 'BEGIN { FS="=" } /^[^#].*=.*/ { print "#define "$$1,$$2 } END {  }' >> $@

	@$(ECHO) "" >> $@

	@$(ECHO) "#endif /*CONFIG_H_*/" >> $@

# above echos does not use \n due to different handling on different os:es?

#	@$(CAT) $^ | $(AWK) -v apa=0x$(HWID) 'BEGIN {  } /.*/ {sub(/^NODE_HW_ID=<GENERATE_HW>/,"NODE_HW_ID="apa)}{print} END {  }' > $^

#	@$(CAT) $^ | $(GREP) "<GENERATE_HW>" | $(AWK) -v apa=0x$(HWID) 'BEGIN { FS="=" } /^[^#].*=.*/ { print "#define "$$1,apa } END {  }' >> $@

#	@$(CAT) $^ | $(GREP) -v "<GENERATE_HW>" | $(AWK) 'BEGIN { FS="=" } /^[^#].*=.*/ { print "#define "$$1,$$2 } END {  }' >> $@

# Display compiler version information.

gccversion : 

	@$(CC) --version

# Convert ELF to COFF for use in debugging / simulating in AVR Studio or VMLAB.

COFFCONVERT=$(OBJCOPY) --debugging \

--change-section-address .data-0x800000 \

--change-section-address .bss-0x800000 \

--change-section-address .noinit-0x800000 \

--change-section-address .eeprom-0x810000 

coff: $(TARGET).elf

	@$(ECHO) $(MSG_COFF) $(TARGET).cof

	@$(COFFCONVERT) -O coff-avr $< $(TARGET).cof

extcoff: $(TARGET).elf

	@$(ECHO) $(MSG_EXTENDED_COFF) $(TARGET).cof

	@$(COFFCONVERT) -O coff-ext-avr $< $(TARGET).cof

# Create final output files (.hex, .eep) from ELF output file.

%.hex: %.elf

	@$(ECHO) $(MSG_FLASH) $@

	@$(OBJCOPY) -j .text -j .data -j .bootloader -O ihex $< $@

%.eep: %.elf

	@$(ECHO) $(MSG_EEPROM) $@

	-@$(OBJCOPY) -j .eeprom --set-section-flags=.eeprom="alloc,load" \

	--change-section-lma .eeprom=0 -O ihex $< $@

# Create extended listing file from ELF output file.

%.lss: %.elf

	@$(ECHO) $(MSG_EXTENDED_LISTING) $@

	@$(OBJDUMP) -h -S $< > $@

# Create a symbol table from ELF output file.

%.sym: %.elf

	@$(ECHO) $(MSG_SYMBOL_TABLE) $@

	@$(NM) -n $< > $@

# Link: create ELF output file from object files.

.SECONDARY : $(TARGET).elf

#.PRECIOUS : $(OBJ)

$(TARGET)_pass1.elf: override BIOS_START=0x100

$(TARGET)_pass1.elf: config.h $(OBJ)

	@$(ECHO) Linking pass 1:

	@$(CC) $(LDFLAGS) -o $@ $(filter %.o,$^) $(LIBS)

$(TARGET).elf: config.h $(OBJ) | $(TARGET)_pass1.elf

	@$(ECHO) Linking pass 2: Optimizing flash usage

	@$(CC) $(LDFLAGS) -o $@ $(filter %.o,$^) $(LIBS)

$(LIBNAME).S: $(TARGET).elf

	@$(ECHO) Generating $@

	@$(AWK) '$$1 ~ /0x[0-9a-f]+/ && /BIOS_/ { print "\t.set "$$2","$$1"\n\t.global "$$2 }' $(TARGET).map > $@

bios.h: $(LIBDIR)/drivers/can/can.h $(LIBDIR)/bios/bios_export.h

	@$(ECHO) Generating $@

	@$(ECHO) "/* This file is automatically generated. Do not edit. */" > $@

	@$(ECHO) "" >> $@

	@$(ECHO) "#ifndef BIOS_H_" >> $@

	@$(ECHO) "#define BIOS_H_" >> $@

	@$(ECHO) "" >> $@

	@$(CAT) $^ >> $@

	@$(ECHO) "" >> $@

	@$(ECHO) "#endif /*BIOS_H_*/" >> $@

lib: bios.h $(LIBNAME).a($(LIBNAME).o)

# Compile: create object files from C source files.

%.o : %.c

	@$(ECHO) $(MSG_COMPILING) $<

	@$(CC) -c $(CFLAGS) $< -o $@ 

# Compile: create assembler files from C source files.

%.s : %.c

	@$(CC) -S $(CFLAGS) $< -o $@

# Assemble: create object files from assembler source files.

%.o : %.S

	@$(ECHO) $(MSG_ASSEMBLING) $<

	@$(CC) -c $(ASFLAGS) $< -o $@

# Buildtree: create directories for output files.

$(BUILDDIRS) :

	@$(ECHO) $(MSG_CREATE) $@

	@$(MKDIR) -p $@

# Target: clean project.

clean: 

	@$(ECHO) $(MSG_CLEANING)

	$(RM) $(TARGET).eep

	$(RM) $(TARGET).cof

	$(RM) $(TARGET)_pass1.elf

	$(RM) $(TARGET).elf

	$(RM) $(TARGET).sym

	$(RM) $(TARGET).lss

	$(RM) $(OBJ)

	$(RM) $(DEP)

	$(RM) $(LST)

	$(RM) $(LIBNAME).S

	$(RM) config.h

	$(RM) -r drivers

check_binaries:

ifndef AWK

	@echo 

	@echo ERROR! This is because you have not defined build-binaries in system.inc

	@echo Please update system.inc.template from SVN and then copy the build binaries definitions to your system.inc

	@echo 

	@false

endif

# Include the dependency files.

ifneq ($(MAKECMDGOALS),clean)

ifneq ($(strip $(DEP)),)

-include $(DEP)

endif

endif

# Listing of phony targets.

.PHONY : all sizebefore sizeafter build \

elf hex eep lss sym coff extcoff clean \

gccversion lib check_binaries