Makefile
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上传日期:2013-04-10
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- # Makefile for making ELF bootable images for booting on CHRP
- # using Open Firmware.
- #
- # Geert Uytterhoeven September 1997
- #
- # Based on coffboot by Paul Mackerras
- # Simplified for ppc64 by Todd Inglett
- #
- # NOTE: this code is built for 32 bit in ELF32 format even though
- # it packages a 64 bit kernel. We do this to simplify the
- # bootloader and increase compatibility with OpenFirmware.
- #
- # To this end we need to define BOOTCC, etc, as the tools
- # needed to build the 32 bit image. These are normally HOSTCC,
- # but may be a third compiler if, for example, you are cross
- # compiling from an intel box. Once the 64bit ppc gcc is
- # stable it will probably simply be a compiler switch to
- # compile for 32bit mode.
- # To make it easier to setup a cross compiler,
- # CROSS32_COMPILE is setup as a prefix just like CROSS_COMPILE
- # in the toplevel makefile.
- CROSS32_COMPILE =
- #CROSS32_COMPILE = /usr/local/ppc/bin/powerpc-linux-
- BOOTCC = $(CROSS32_COMPILE)gcc
- BOOTCFLAGS = $(HOSTCFLAGS) -I$(HPATH)
- BOOTLD = $(CROSS32_COMPILE)ld
- BOOTAS = $(CROSS32_COMPILE)as
- BOOTAFLAGS = -D__ASSEMBLY__ $(HOSTCFLAGS) -I$(HPATH)
- OBJCOPYFLAGS = contents,alloc,load,readonly,data
- .c.o:
- $(BOOTCC) $(BOOTCFLAGS) -c -o $*.o $<
- .S.o:
- $(BOOTCC) $(BOOTAFLAGS) -traditional -c -o $*.o $<
- CFLAGS = $(CPPFLAGS) -O -fno-builtin -DSTDC_HEADERS
- LD_ARGS = -Ttext 0x00400000 -e _start
- OBJS = crt0.o string.o prom.o zImage.o zlib.o imagesize.o
- #LIBS = $(TOPDIR)/lib/lib.a
- LIBS =
- ifeq ($(CONFIG_SMP),y)
- TFTPIMAGE=/tftpboot/zImage.chrp.smp
- else
- TFTPIMAGE=/tftpboot/zImage.chrp
- endif
- ifeq ($(CONFIG_PPC_ISERIES),y)
- all: vmlinux.sm
- else
- all: $(TOPDIR)/zImage
- endif
- znetboot: zImage
- cp zImage $(TFTPIMAGE)
- ifeq ($(CONFIG_PPC_ISERIES),y)
- addSystemMap: addSystemMap.c
- $(HOSTCC) $(HOSTCFLAGS) -o addSystemMap addSystemMap.c
- vmlinux.sm: $(TOPDIR)/vmlinux addSystemMap
- ./addSystemMap $(TOPDIR)/System.map $(TOPDIR)/vmlinux vmlinux.sm
- addRamDisk: addRamDisk.c
- $(HOSTCC) $(HOSTCFLAGS) -o addRamDisk addRamDisk.c
- vmlinux.initrd: $(TOPDIR)/vmlinux addRamDisk ramdisk.image.gz $(TOPDIR)/System.map
- ./addRamDisk ramdisk.image.gz $(TOPDIR)/System.map $(TOPDIR)/vmlinux vmlinux.initrd
- vmlinux.sminitrd: vmlinux.sm addRamDisk ramdisk.image.gz $(TOPDIR)/System.map
- ./addRamDisk ramdisk.image.gz $(TOPDIR)/System.map vmlinux.sm vmlinux.sminitrd
- endif
- znetboot.initrd: zImage.initrd
- cp zImage.initrd $(TFTPIMAGE)
- addnote: addnote.c
- $(HOSTCC) $(HOSTCFLAGS) -o addnote addnote.c
- imagesize.c: $(TOPDIR)/vmlinux
- ls -l $(TOPDIR)/vmlinux | awk '{printf "/* generated -- do not edit! */nunsigned long vmlinux_filesize = %d;n", $$5}' > imagesize.c
- $(CROSS_COMPILE)nm -n $(TOPDIR)/vmlinux | tail -1 | awk '{printf "unsigned long vmlinux_memsize = 0x%s;n", substr($$1,8)}' >> imagesize.c
- vmlinux .config System.map: % : $(TOPDIR)/%
- gzip -cvf9 $(TOPDIR)/$@ > kernel-$@.gz
- $(OBJCOPY) zImage.o
- --add-section=.kernel:$@=kernel-$@.gz
- --set-section-flags=.kernel:$@=$(OBJCOPYFLAGS)
- initrd: ramdisk.image.gz
- $(OBJCOPY) zImage.o
- --add-section=.kernel:$@=ramdisk.image.gz
- --set-section-flags=.kernel:$@=$(OBJCOPYFLAGS)
- zImage: $(OBJS) addnote vmlinux .config System.map
- $(BOOTLD) $(LD_ARGS) -T zImage.lds -o $@ $(OBJS) $(LIBS)
- ./addnote $@
- zImage.initrd: $(OBJS) addnote vmlinux .config System.map initrd
- $(BOOTLD) $(LD_ARGS) -T zImage.lds -o $@ $(OBJS) $(LIBS)
- ./addnote $@
- clean:
- rm -f add{note,RamDisk,SystemMap} $(OBJS) initrd.o
- vmlinux.{sm,initrd} zImage{,.initrd} imagesize.c
- kernel-{vmlinux,.config,System.map}.gz
- fastdep:
- $(TOPDIR)/scripts/mkdep *.[Sch] > .depend
- dep:
- $(CPP) $(CPPFLAGS) -M *.S *.c > .depend