Makefile

# These values must conform to linuxld.h content
  LOADER_OFFSET = 0x80800000
 RUNTIME_OFFSET = 0x80801000

NO_NUMBER_OF_MACS = -DNO_NUMBER_OF_MACS
NO_XMODEM         = -DNO_XMODEM

EXTRA_DEFINE = $(NO_NUMBER_OF_MACS) $(NO_XMODEM)


#============================ Make ==============================
# Don't define any builtin rules and variables.
MAKEFLAGS := $(MAKEFLAGS)R

# Delete default suffixes
.SUFFIXES:

# Delete default rules
.DEFAULT:

#.DEFAULT:
#	$(error no rules for target "$@")

# Set V=something for verbose building messages
#V = 1
v = $(if $(V),,@)


#============================ Compilers ==============================
CROSS_PREFIX ?= $(HOME)/gnutools/mipsisa32-elf/bin/mipsisa32-elf-
AS	= $(CROSS_PREFIX)as
CC	= $(CROSS_PREFIX)gcc
LD	= $(CROSS_PREFIX)ld
AR	= $(CROSS_PREFIX)ar
OBJCOPY	= $(CROSS_PREFIX)objcopy
OBJDUMP	= $(CROSS_PREFIX)objdump


#============================ Tools ==================================
RM	= rm    $(if $(V),-v) -f
RM_R	= rm    $(if $(V),-v) -fr
MV	= mv    $(if $(V),-v)
CP	= cp    $(if $(V),-v) -a
MKDIR   = mkdir $(if $(V),-v)
MKDIR_P = mkdir $(if $(V),-v) -p


#=======================  Endian dependance  =========================
ENDIAN_FG = -EL
EDIR      = el
LIB_PATH  = -L./lib/$(EDIR)


#=======================  Compiler Flags  ============================
CC_FLAG		= $(ENDIAN_FG) -Wall -W -Os -pipe
CC_FLAG		+= -Wpointer-arith -Wcast-qual -Wcast-align -Wwrite-strings -Winline -fno-common
CC_FLAG		+= -Wbad-function-cast -Wstrict-prototypes -Werror-implicit-function-declaration

CPU_FLAG	= -mips32
INCLUDE_DIR	= -I./include

ALL_C_FLAGS	= $(CC_FLAG) $(INCLUDE_DIR) $(CPU_FLAG) $(EXT_DEF) $(EXTRA_DEFINE)


#=======================  Directories  ===============================
OBJ_DIR  = ./build
BIN_DIR  = ./bin
SRC_DIR  = ./src
TFTPBOOT = $(HOME)/tftpboot

 OBJ_DIR_STAMP =  $(OBJ_DIR)/.dir
 BIN_DIR_STAMP =  $(BIN_DIR)/.dir
TFTPBOOT_STAMP = $(TFTPBOOT)/.dir


#==================== NandFlash Linker Flags  ===========================
LD_FLAG = -X -N
LIBS = -lz -lc -lgcc -lnosys

BOOT_ROM_NAME = nand_bootinit
BOOT_RAM_NAME = nand_bootinit_ram
BOOT_ROM_OBJS = $(OBJ_DIR)/nand_bootinit.o
BOOT_RAM_OBJS = $(OBJ_DIR)/nand_bootinit_ram.o

EXEC_ROM_NAME = nand_bootmain
EXEC_RAM_NAME = nand_bootmain_ram


exec_objs  = nand_ldrinit.o bloader.o linuxld.o $(if $(NO_XMODEM),,xmodem.o)
exec_objs += nand.o nand_ecc.o
exec_objs += cachelib.o irqlib.o timer.o vector.o except.o utils.o
exec_objs += if_5120.o memlib.o uartdrv.o tftp.o eth.o skbuff.o arp.o ip.o
exec_objs += udp.o param.o nf.o dslam.o menu.o ap-hash.o

EXEC_OBJS = $(addprefix $(OBJ_DIR)/,$(exec_objs))


EXEC_ROM_OBJS = $(EXEC_OBJS) $(OBJ_DIR)/rom.o
EXEC_RAM_OBJS = $(EXEC_OBJS) $(OBJ_DIR)/ram.o


ROM_NAME = nandloader
RAM_NAME = nandloader_ram


     ROM_IMG  = $(BIN_DIR)/$(ROM_NAME).img
BOOT_ROM_IMG  = $(OBJ_DIR)/$(BOOT_ROM_NAME).img
MAIN_ROM_IMG  = $(OBJ_DIR)/$(EXEC_ROM_NAME).img

     RAM_IMG  = $(BIN_DIR)/$(RAM_NAME).img
     RAM_SREC = $(BIN_DIR)/$(RAM_NAME).srec
BOOT_RAM_IMG  = $(OBJ_DIR)/$(BOOT_RAM_NAME).img
MAIN_RAM_IMG  = $(OBJ_DIR)/$(EXEC_RAM_NAME).img


ALL_OBJS = $(BOOT_ROM_OBJS) $(BOOT_RAM_OBJS) $(EXEC_ROM_OBJS) $(EXEC_RAM_OBJS)


#====================== NandFlash Rules  =============================
.PHONY  : all %install
all     : $(ROM_IMG) $(RAM_IMG)
install : rom_img_install ram_img_install


rom_img_install : $(BOOT_ROM_IMG) $(MAIN_ROM_IMG) $(ROM_IMG) $(TFTPBOOT_STAMP)
	@echo "> Copying $(ROM_IMG) to $(TFTPBOOT)/sg5120boot_rom.bin"
	$(v)$(CP) $(ROM_IMG) $(TFTPBOOT)/sg5120boot_rom.bin

$(ROM_IMG) : $(BOOT_ROM_IMG) $(MAIN_ROM_IMG) $(BIN_DIR_STAMP)
	@echo "> Constructing $@"
	$(v)cat $(BOOT_ROM_IMG) $(MAIN_ROM_IMG) > $@

$(BOOT_ROM_IMG) : $(BOOT_ROM_OBJS) $(OBJ_DIR_STAMP)
	@echo "> Linking $@"
	$(v)$(LD) $(ENDIAN_FG) $(LD_FLAG) $(LIB_PATH) -e _nand_reset -Ttext $(LOADER_OFFSET) \
			 	-Map $(OBJ_DIR)/$(BOOT_ROM_NAME).map -o $(OBJ_DIR)/$(BOOT_ROM_NAME).elf	\
				$(BOOT_ROM_OBJS) $(LIBS)
	$(v)$(OBJCOPY) -O binary $(OBJ_DIR)/$(BOOT_ROM_NAME).elf  $(OBJ_DIR)/$(BOOT_ROM_NAME).bin
	$(v)$(OBJCOPY) -I binary -O binary --pad-to 0x1000        $(OBJ_DIR)/$(BOOT_ROM_NAME).bin $@

$(MAIN_ROM_IMG) : $(EXEC_ROM_OBJS) $(OBJ_DIR_STAMP)
	@echo "> Linking $@"
	$(v)$(LD) $(ENDIAN_FG) $(LD_FLAG) $(LIB_PATH) -e _ldrinit -Ttext $(RUNTIME_OFFSET) \
			-Map $(OBJ_DIR)/$(EXEC_ROM_NAME).map -o $(OBJ_DIR)/$(EXEC_ROM_NAME).elf \
			$(EXEC_ROM_OBJS) $(LIBS)
	$(v)$(OBJCOPY) -O binary $(OBJ_DIR)/$(EXEC_ROM_NAME).elf $@


ram_img_install : $(RAM_IMG) $(TFTPBOOT_STAMP)
	@echo "> Copying $(RAM_IMG) to $(TFTPBOOT)/sg5120boot_ram.bin"
	$(v)$(CP) $(RAM_IMG) $(TFTPBOOT)/sg5120boot_ram.bin

$(RAM_IMG) : $(BOOT_RAM_IMG) $(MAIN_RAM_IMG) $(BIN_DIR_STAMP)
	@echo "> Constructing $@"
	$(v)cat $(BOOT_RAM_IMG) $(MAIN_RAM_IMG) > $(RAM_IMG)

$(RAM_SREC) : $(RAM_IMG) $(BIN_DIR_STAMP)
	@echo "> Converting $< to $@"
	@$(OBJCOPY) --set-start=$(LOADER_OFFSET) -O srec -I binary $(RAM_IMG) $(RAM_SREC)

$(BOOT_RAM_IMG) : $(BOOT_RAM_OBJS) $(OBJ_DIR_STAMP)
	@echo "> Linking $@"
	$(v)$(LD) $(ENDIAN_FG) $(LD_FLAG) $(LIB_PATH) -e _nand_reset -Ttext $(LOADER_OFFSET) \
			 	-Map $(OBJ_DIR)/$(BOOT_RAM_NAME).map -o $(OBJ_DIR)/$(BOOT_RAM_NAME).elf	\
				$(BOOT_RAM_OBJS) $(LIBS)
	$(v)$(OBJCOPY) -O binary $(OBJ_DIR)/$(BOOT_RAM_NAME).elf $(OBJ_DIR)/$(BOOT_RAM_NAME).bin
	$(v)$(OBJCOPY) -I binary -O binary --pad-to 0x1000       $(OBJ_DIR)/$(BOOT_RAM_NAME).bin $@

$(MAIN_RAM_IMG) : $(EXEC_RAM_OBJS) $(OBJ_DIR_STAMP)
	@echo "> Linking $@"
	$(v)$(LD) $(ENDIAN_FG) $(LD_FLAG) $(LIB_PATH) -e _ldrinit -Ttext $(RUNTIME_OFFSET) \
			-Map $(OBJ_DIR)/$(EXEC_RAM_NAME).map -o $(OBJ_DIR)/$(EXEC_RAM_NAME).elf \
			$(EXEC_RAM_OBJS) $(LIBS)
	$(v)$(OBJCOPY) -O binary $(OBJ_DIR)/$(EXEC_RAM_NAME).elf $@


$(OBJ_DIR)/%.o : $(SRC_DIR)/%.c $(OBJ_DIR_STAMP)
	@echo "> Compiling $< to $@"
	$(v)$(CC) $(ALL_C_FLAGS)  -c $< -o $@

$(OBJ_DIR)/%.o : $(SRC_DIR)/%.S $(OBJ_DIR_STAMP)
	@echo "> Compiling $< to $@"
	$(v)$(CC) $(ALL_C_FLAGS) -c $< -o $@


#======================== Directory rules ============================
%/.dir :
	@echo "> Creating directory $@"
	$(v)$(MKDIR_P)        $(dir $@)
	$(v)touch                   $@


#========================== Clean rules ==============================
.PHONY : clean
clean:
	@echo "> Cleaning $(OBJ_DIR) $(BIN_DIR)"
	$(v)$(RM_R)       $(OBJ_DIR) $(BIN_DIR)


#===================== Dependencies generation =======================
deps = $(patsubst %.o,%.dep,$(ALL_OBJS))
#$(warning deps: $(deps))

dep_gen_cmd_tail = -M $(ALL_C_FLAGS) -w $< > $@.tmp.dep \
	&& sed '\''s!$(subst .,\.,$*.o) *:!$(patsubst %.dep,%.o,$@) $(patsubst %.dep,%.lo,$@) $@ $(patsubst %.dep,%.s,$@):!g'\'' \
	   < $@.tmp.dep > $@.tmp2.dep \
	&& $(MV) $@.tmp2.dep $@ && $(RM) $@.tmp.dep; } \
	|| $(RM) $@ $@.tmp.dep $@.tmp.dep

  c_deps_gen_cmd = $(SHELL) -ec '{ $(CC)  -D__GENDEPS__ $(dep_gen_cmd_tail)'


$(OBJ_DIR)/%.o: $(OBJ_DIR)/%.dep

$(OBJ_DIR)/%.dep: $(SRC_DIR)/%.c $(OBJ_DIR_STAMP)
	@echo "> Generating dependencies for $<"; \
		$(c_deps_gen_cmd)

ifeq "$(deps)" ""
  DONT_INCLUDE_DEPS = defined
endif

ifneq "$(filter %clean dist% none,$(MAKECMDGOALS))" ""
  DONT_INCLUDE_DEPS = defined
endif

ifndef DONT_INCLUDE_DEPS
  -include $(deps)
endif