makefile

ADS下的bios工程

.EXPORT_ALL_VARIABLES:

TEXTADDR		= 0x0
TEXTADDR0		= 0x0
BSS_START		= 0x30280000
TEXTADDR1		= 0x30200000

CONFIG_NAND_BOOT = y

#CROSS_COMPILE = arm-linux-
CROSS_COMPILE = GNUARM

TOPDIR			:= $(shell if [ "$$PWD" != "" ]; then echo $$PWD; else pwd; fi)
HPATH			= $(TOPDIR)/include
FINDHPATH		= $(HPATH)/bios

DEBUG			= 
CFLAGS			= -fomit-frame-pointer -I$(HPATH) -Wall $(DEBUG) -fno-loop-optimize #-O2
LDFLAGS			= -N -Ttext $(TEXTADDR) #-Tbss $(BSS_START)
LDFLAGS1		= -N -Ttext $(TEXTADDR1) #-Tbss $(BSS_START)
LDFLAGS0		= -N -Ttext $(TEXTADDR0) #-Tbss $(BSS_START0)

HOSTCC			= gcc
HOSTCFLAGS		= -Wall -Wstrict-prototypes -fomit-frame-pointer #-O2

CC				=$(CROSS_COMPILE)gcc
LD				=$(CROSS_COMPILE)ld
AR				=$(CROSS_COMPILE)ar
NM				=$(CROSS_COMPILE)nm
STRIP			=$(CROSS_COMPILE)strip
OBJCOPY			=$(CROSS_COMPILE)objcopy

#CFLAGS			+= -mapcs-32 -mcpu=arm9tdmi -DELF
CFLAGS			+= -mcpu=arm9tdmi -DELF -nostdlib
BIOS			= bios.elf

ifeq ($(BIG_ENDIAN),y)
CFLAGS			+= -mbig-endian -DBIG_ENDIAN
LDFLAGS2		= -oformat=elf32-bigarm
OUTPUT_FORMAT	= elf32-bigarm
else
OUTPUT_FORMAT	= elf32-littlearm
endif

SUBDIRS			= lib init drivers
BIOSOBJS		= init/crt0.o init/init.o
DRIVERS			= drivers/drivers.o drivers/char/char.a \
				  drivers/rom/rom.a drivers/net/net.a
LIBS			= lib/lib.a `$(CC) $(CFLAGS) --print-libgcc-file-name`


ifeq ($(CONFIG_NAND_BOOT),y)
all: boot bios update
	cp boot.bin bios.bin load.bin ../image
	cp boot.bin bios.bin load.bin /home/tftp
else
all: bios update
	cp bios.bin load.bin ../image
	cp bios.bin load.bin /home/tftp
endif

boot: boot.elf

bios: bios.elf

update: update.elf

depend dep: dep-files

bios.elf:	subdirs
	$(LD) $(LDFLAGS) $(LDFLAGS2) -T elfbios.lds -o $@ $(BIOSOBJS)\
		$(DRIVERS) $(LIBS)
	$(OBJCOPY) -I $(OUTPUT_FORMAT) -O binary bios.elf bios.bin
	$(NM) -n bios.elf > System.sym

update.elf:	subdirs1
	$(LD) $(LDFLAGS1) $(LDFLAGS2) -T elfbios.lds -o $@ update/crt0.o update/main.o \
	update/flash.o $(LIBS)
	$(OBJCOPY) -I $(OUTPUT_FORMAT) -O binary update.elf update.bin
	cat update.bin bios.bin > load.bin

boot.elf:	bootdirs
	$(LD) $(LDFLAGS0)  -T elfbios.lds -o $@ boot/crt0.o boot/boot.o
	$(OBJCOPY) -I $(OUTPUT_FORMAT) -O binary boot.elf boot.bin

clean:
	$(RM) `find . -name '*.[oas]' -print`
	$(RM) `find . -name '.*.flags' -print`
	$(RM) bios.elf bios.bin	 load.bin update.elf update.bin boot.bin boot.elf System.sym

mrproper:	clean
	$(RM) `find . -name '.depend' -print`
	$(RM) scripts/mkaif scripts/mkdep

subdirs:        $(patsubst %, _dir_%,$(SUBDIRS))

$(patsubst %, _dir_%, $(SUBDIRS)) : dummy
	$(MAKE) -C $(patsubst _dir_%, %, $@)

subdirs1:       $(patsubst %, _dir_%,update)

$(patsubst %, _dir_%, update) : dummy
	$(MAKE) -C $(patsubst _dir_%, %, $@)

bootdirs:        $(patsubst %, _dir_%,boot)

$(patsubst %, _dir_%, boot) : dummy
	$(MAKE) -C $(patsubst _dir_%, %, $@)

dep-files: scripts/mkdep
	scripts/mkdep `find $(FINDHPATH) -follow -name \*.h -print` > .hdepend
	$(MAKE) $(patsubst %,_sfdep_%,$(SUBDIRS)) _FASTDEP_ALL_SUB_DIRS="$(SUBDIRS)"

scripts/mkdep: scripts/mkdep.c
	$(HOSTCC) $(HOSTCFLAGS) -o scripts/mkdep scripts/mkdep.c

tar:		mrproper
	@( cd ..; tar zcf bios-s3c2410-${VERSION}.tar.gz bios )

dummy:

include Rules.make