1# SPDX-License-Identifier: GPL-2.0 2# 3# linux/arch/s390/boot/compressed/Makefile 4# 5# create a compressed vmlinux image from the original vmlinux 6# 7 8KCOV_INSTRUMENT := n 9GCOV_PROFILE := n 10UBSAN_SANITIZE := n 11KASAN_SANITIZE := n 12 13obj-y := $(if $(CONFIG_KERNEL_UNCOMPRESSED),,head.o misc.o) piggy.o 14targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 15targets += vmlinux.bin.xz vmlinux.bin.lzma vmlinux.bin.lzo vmlinux.bin.lz4 16targets += vmlinux.scr.lds $(obj-y) $(if $(CONFIG_KERNEL_UNCOMPRESSED),,sizes.h) 17 18KBUILD_AFLAGS := $(KBUILD_AFLAGS_DECOMPRESSOR) 19KBUILD_CFLAGS := $(KBUILD_CFLAGS_DECOMPRESSOR) 20 21OBJECTS := $(addprefix $(obj)/,$(obj-y)) 22 23LDFLAGS_vmlinux := --oformat $(LD_BFD) -e startup -T 24$(obj)/vmlinux: $(obj)/vmlinux.lds $(objtree)/arch/s390/boot/startup.a $(OBJECTS) FORCE 25 $(call if_changed,ld) 26 27# extract required uncompressed vmlinux symbols and adjust them to reflect offsets inside vmlinux.bin 28sed-sizes := -e 's/^\([0-9a-fA-F]*\) . \(__bss_start\|_end\)$$/\#define SZ\2 (0x\1 - 0x100000)/p' 29 30quiet_cmd_sizes = GEN $@ 31 cmd_sizes = $(NM) $< | sed -n $(sed-sizes) > $@ 32 33$(obj)/sizes.h: vmlinux 34 $(call if_changed,sizes) 35 36AFLAGS_head.o += -I$(objtree)/$(obj) 37$(obj)/head.o: $(obj)/sizes.h 38 39CFLAGS_misc.o += -I$(objtree)/$(obj) 40$(obj)/misc.o: $(obj)/sizes.h 41 42OBJCOPYFLAGS_vmlinux.bin := -R .comment -S 43$(obj)/vmlinux.bin: vmlinux 44 $(call if_changed,objcopy) 45 46vmlinux.bin.all-y := $(obj)/vmlinux.bin 47 48suffix-$(CONFIG_KERNEL_GZIP) := .gz 49suffix-$(CONFIG_KERNEL_BZIP2) := .bz2 50suffix-$(CONFIG_KERNEL_LZ4) := .lz4 51suffix-$(CONFIG_KERNEL_LZMA) := .lzma 52suffix-$(CONFIG_KERNEL_LZO) := .lzo 53suffix-$(CONFIG_KERNEL_XZ) := .xz 54 55$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 56 $(call if_changed,gzip) 57$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 58 $(call if_changed,bzip2) 59$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE 60 $(call if_changed,lz4) 61$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 62 $(call if_changed,lzma) 63$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 64 $(call if_changed,lzo) 65$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 66 $(call if_changed,xzkern) 67 68LDFLAGS_piggy.o := -r --format binary --oformat $(LD_BFD) -T 69$(obj)/piggy.o: $(obj)/vmlinux.scr.lds $(obj)/vmlinux.bin$(suffix-y) 70 $(call if_changed,ld) 71 72chkbss := $(filter-out $(obj)/misc.o $(obj)/piggy.o,$(OBJECTS)) 73chkbss-target := $(obj)/vmlinux.bin 74include $(srctree)/arch/s390/scripts/Makefile.chkbss 75