| 1 | # |
| 2 | # linux/arch/mips/boot/compressed/Makefile |
| 3 | # |
| 4 | # create a compressed zImage from the original vmlinux |
| 5 | # |
| 6 | |
| 7 | targets := zImage vmlinuz vmlinux.bin.gz head.o misc.o piggy.o dummy.o |
| 8 | |
| 9 | OBJS := $(obj)/head.o $(obj)/misc.o |
| 10 | |
| 11 | LD_ARGS := -T $(obj)/ld.script -Ttext 0x80600000 -Bstatic |
| 12 | OBJCOPY_ARGS := -O elf32-tradlittlemips |
| 13 | |
| 14 | ENTRY := $(obj)/../tools/entry |
| 15 | FILESIZE := $(obj)/../tools/filesize |
| 16 | |
| 17 | drop-sections = .reginfo .mdebug .comment .note .pdr .options .MIPS.options |
| 18 | strip-flags = $(addprefix --remove-section=,$(drop-sections)) |
| 19 | |
| 20 | |
| 21 | $(obj)/vmlinux.bin.gz: vmlinux |
| 22 | rm -f $(obj)/vmlinux.bin.gz |
| 23 | $(OBJCOPY) -O binary $(strip-flags) vmlinux $(obj)/vmlinux.bin |
| 24 | gzip -v9f $(obj)/vmlinux.bin |
| 25 | |
| 26 | $(obj)/head.o: $(obj)/head.S $(obj)/vmlinux.bin.gz vmlinux |
| 27 | $(CC) $(KBUILD_AFLAGS) \ |
| 28 | -DIMAGESIZE=$(shell sh $(FILESIZE) $(obj)/vmlinux.bin.gz) \ |
| 29 | -DKERNEL_ENTRY=$(shell sh $(ENTRY) $(NM) vmlinux ) \ |
| 30 | -DLOADADDR=$(loadaddr) \ |
| 31 | -c -o $(obj)/head.o $< |
| 32 | |
| 33 | $(obj)/vmlinuz: $(OBJS) $(obj)/ld.script $(obj)/vmlinux.bin.gz $(obj)/dummy.o |
| 34 | $(OBJCOPY) \ |
| 35 | --add-section=.image=$(obj)/vmlinux.bin.gz \ |
| 36 | --set-section-flags=.image=contents,alloc,load,readonly,data \ |
| 37 | $(obj)/dummy.o $(obj)/piggy.o |
| 38 | $(LD) $(LD_ARGS) -o $@ $(OBJS) $(obj)/piggy.o |
| 39 | $(OBJCOPY) $(OBJCOPY_ARGS) $@ $@ -R .comment -R .stab -R .stabstr -R .initrd -R .sysmap |
| 40 | |
| 41 | zImage: $(obj)/vmlinuz |
| 42 | $(OBJCOPY) -O binary $(obj)/vmlinuz $(obj)/zImage |
| 43 | |
