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#
# create a compressed vmlinuz image from the binary vmlinux.bin file
#
target = $(target_compressed_dir)
src = $(src_compressed_dir)
CC = gcc-cris -melf $(LINUXINCLUDE)
CFLAGS = -O2
LD = ld-cris
OBJCOPY = objcopy-cris
OBJCOPYFLAGS = -O binary --remove-section=.bss
OBJECTS = $(target)/head.o $(target)/misc.o
# files to compress
SYSTEM = $(objtree)/vmlinux.bin
all: $(target_compressed_dir)/vmlinuz
$(target)/decompress.bin: $(OBJECTS)
$(LD) -T $(src)/decompress.ld -o $(target)/decompress.o $(OBJECTS)
$(OBJCOPY) $(OBJCOPYFLAGS) $(target)/decompress.o $(target)/decompress.bin
# Create vmlinuz image in top-level build directory
$(target_compressed_dir)/vmlinuz: $(target) piggy.img $(target)/decompress.bin
@echo " COMPR vmlinux.bin --> vmlinuz"
@cat $(target)/decompress.bin piggy.img > $(target_compressed_dir)/vmlinuz
@rm -f piggy.img
$(target)/head.o: $(src)/head.S
$(CC) -D__ASSEMBLY__ -traditional -c $< -o $@
$(target)/misc.o: $(src)/misc.c
$(CC) -D__KERNEL__ -c $< -o $@
# gzip the kernel image
piggy.img: $(SYSTEM)
@cat $(SYSTEM) | gzip -f -9 > piggy.img
$(target):
mkdir -p $(target)
clean:
rm -f piggy.img $(objtree)/vmlinuz
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