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#
# linux/arch/sh/boot/compressed/Makefile
#
# create a compressed vmlinux image from the original vmlinux
#
HEAD = head.o
SYSTEM = $(TOPDIR)/vmlinux
OBJECTS = $(HEAD) misc.o
ifdef CONFIG_SH_STANDARD_BIOS
OBJECTS += ../../kernel/sh_bios.o
endif
ZLDFLAGS = -e startup -T $(TOPDIR)/arch/sh/vmlinux.lds
#
# ZIMAGE_OFFSET is the load offset of the compression loader
#
ZIMAGE_OFFSET = $(shell printf "0x%8x" $$[0x80000000+0x$(CONFIG_MEMORY_START)+0x200000+0x10000+0x400])
ZLINKFLAGS = -Ttext $(ZIMAGE_OFFSET) $(ZLDFLAGS)
all: vmlinux
vmlinux: piggy.o $(OBJECTS)
$(LD) $(ZLINKFLAGS) -o vmlinux $(OBJECTS) piggy.o
head.o: head.S
$(CC) $(AFLAGS) -traditional -c head.S
piggy.o: $(SYSTEM)
tmppiggy=_tmp_$$$$piggy; \
rm -f $$tmppiggy $$tmppiggy.gz $$tmppiggy.lnk; \
$(OBJCOPY) -R .empty_zero_page $(SYSTEM) $$tmppiggy; \
gzip -f -9 < $$tmppiggy > $$tmppiggy.gz; \
echo "SECTIONS { .data : { input_len = .; LONG(input_data_end - input_data) input_data = .; *(.data) input_data_end = .; }}" > $$tmppiggy.lnk; \
$(LD) -r -o piggy.o -b binary $$tmppiggy.gz -b elf32-shl -T $$tmppiggy.lnk; \
rm -f $$tmppiggy $$tmppiggy.gz $$tmppiggy.lnk
clean:
rm -f vmlinux _tmp_*
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