be2412c247
There is no reason to have this code in assembly language. Therefore convert it to C. Note that this code needs special treatment: it is called very early and one of the side effects is that e.g. the bss section is not cleared. Therefore the preferred way for static variables is to put them on the stack which has a size of 16KB. There is no functional change with this patch. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
70 lines
2.1 KiB
Makefile
70 lines
2.1 KiB
Makefile
#
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# linux/arch/s390/boot/compressed/Makefile
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#
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# create a compressed vmlinux image from the original vmlinux
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#
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KCOV_INSTRUMENT := n
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targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2
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targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4
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targets += misc.o piggy.o sizes.h head.o
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KBUILD_CFLAGS := -m64 -D__KERNEL__ $(LINUX_INCLUDE) -O2
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KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
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KBUILD_CFLAGS += $(cflags-y) -fno-delete-null-pointer-checks -msoft-float
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KBUILD_CFLAGS += $(call cc-option,-mpacked-stack)
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KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
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GCOV_PROFILE := n
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OBJECTS := $(addprefix $(objtree)/arch/s390/kernel/, head.o sclp.o ebcdic.o als.o)
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OBJECTS += $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o
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LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T
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$(obj)/vmlinux: $(obj)/vmlinux.lds $(OBJECTS)
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$(call if_changed,ld)
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sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 0x\1/p'
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quiet_cmd_sizes = GEN $@
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cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@
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$(obj)/sizes.h: vmlinux
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$(call if_changed,sizes)
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AFLAGS_head.o += -I$(obj)
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$(obj)/head.o: $(obj)/sizes.h
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CFLAGS_misc.o += -I$(obj)
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$(obj)/misc.o: $(obj)/sizes.h
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OBJCOPYFLAGS_vmlinux.bin := -R .comment -S
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$(obj)/vmlinux.bin: vmlinux
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$(call if_changed,objcopy)
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vmlinux.bin.all-y := $(obj)/vmlinux.bin
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suffix-$(CONFIG_KERNEL_GZIP) := gz
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suffix-$(CONFIG_KERNEL_BZIP2) := bz2
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suffix-$(CONFIG_KERNEL_LZ4) := lz4
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suffix-$(CONFIG_KERNEL_LZMA) := lzma
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suffix-$(CONFIG_KERNEL_LZO) := lzo
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suffix-$(CONFIG_KERNEL_XZ) := xz
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$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y)
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$(call if_changed,gzip)
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$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y)
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$(call if_changed,bzip2)
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$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y)
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$(call if_changed,lz4)
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$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y)
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$(call if_changed,lzma)
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$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y)
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$(call if_changed,lzo)
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$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y)
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$(call if_changed,xzkern)
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LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T
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$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix-y)
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$(call if_changed,ld)
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