1#
 2# linux/arch/x86/boot/compressed/Makefile
 3#
 4# create a compressed vmlinux image from the original vmlinux
 5#
 6
 7targets := vmlinux.lds vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo head_$(BITS).o misc.o string.o cmdline.o early_serial_console.o piggy.o
 8
 9KBUILD_CFLAGS := -m$(BITS) -D__KERNEL__ $(LINUX_INCLUDE) -O2
10KBUILD_CFLAGS += -fno-strict-aliasing -fPIC
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
11KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
12cflags-$(CONFIG_X86_32) := -march=i386
13cflags-$(CONFIG_X86_64) := -mcmodel=small
14KBUILD_CFLAGS += $(cflags-y)
15KBUILD_CFLAGS += $(call cc-option,-ffreestanding)
16KBUILD_CFLAGS += $(call cc-option,-fno-stack-protector)
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
17
18KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
19GCOV_PROFILE := n
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
20
21LDFLAGS := -m elf_$(UTS_MACHINE)
22LDFLAGS_vmlinux := -T
23
24hostprogs-y	:= mkpiggy
 
25
26$(obj)/vmlinux: $(obj)/vmlinux.lds $(obj)/head_$(BITS).o $(obj)/misc.o $(obj)/string.o $(obj)/cmdline.o $(obj)/early_serial_console.o $(obj)/piggy.o FORCE
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
27	$(call if_changed,ld)
28	@:
29
30OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
31$(obj)/vmlinux.bin: vmlinux FORCE
32	$(call if_changed,objcopy)
33
 
34
35targets += vmlinux.bin.all vmlinux.relocs relocs
36hostprogs-$(CONFIG_X86_NEED_RELOCS) += relocs
37
38quiet_cmd_relocs = RELOCS  $@
39      cmd_relocs = $(obj)/relocs $< > $@;$(obj)/relocs --abs-relocs $<
40$(obj)/vmlinux.relocs: vmlinux $(obj)/relocs FORCE
41	$(call if_changed,relocs)
42
43vmlinux.bin.all-y := $(obj)/vmlinux.bin
44vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
45
46$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
47	$(call if_changed,gzip)
48$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
49	$(call if_changed,bzip2)
50$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
51	$(call if_changed,lzma)
52$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
53	$(call if_changed,xzkern)
54$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
55	$(call if_changed,lzo)
 
 
 
 
56
57suffix-$(CONFIG_KERNEL_GZIP)	:= gz
58suffix-$(CONFIG_KERNEL_BZIP2)	:= bz2
59suffix-$(CONFIG_KERNEL_LZMA)	:= lzma
60suffix-$(CONFIG_KERNEL_XZ)	:= xz
61suffix-$(CONFIG_KERNEL_LZO) 	:= lzo
 
 
62
63quiet_cmd_mkpiggy = MKPIGGY $@
64      cmd_mkpiggy = $(obj)/mkpiggy $< > $@ || ( rm -f $@ ; false )
65
66targets += piggy.S
67$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
68	$(call if_changed,mkpiggy)

  1# SPDX-License-Identifier: GPL-2.0
  2#
  3# linux/arch/x86/boot/compressed/Makefile
  4#
  5# create a compressed vmlinux image from the original vmlinux
  6#
  7# vmlinuz is:
  8#	decompression code (*.o)
  9#	asm globals (piggy.S), including:
 10#		vmlinux.bin.(gz|bz2|lzma|...)
 11#
 12# vmlinux.bin is:
 13#	vmlinux stripped of debugging and comments
 14# vmlinux.bin.all is:
 15#	vmlinux.bin + vmlinux.relocs
 16# vmlinux.bin.(gz|bz2|lzma|...) is:
 17#	(see scripts/Makefile.lib size_append)
 18#	compressed vmlinux.bin.all + u32 size of vmlinux.bin.all
 19
 20# Sanitizer runtimes are unavailable and cannot be linked for early boot code.
 21KASAN_SANITIZE			:= n
 22KCSAN_SANITIZE			:= n
 23OBJECT_FILES_NON_STANDARD	:= y
 24
 25# Prevents link failures: __sanitizer_cov_trace_pc() is not linked in.
 26KCOV_INSTRUMENT		:= n
 27
 28targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \
 29	vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 vmlinux.bin.zst
 30
 31KBUILD_CFLAGS := -m$(BITS) -O2
 32KBUILD_CFLAGS += -fno-strict-aliasing -fPIE
 33KBUILD_CFLAGS += -Wundef
 34KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING
 35cflags-$(CONFIG_X86_32) := -march=i386
 36cflags-$(CONFIG_X86_64) := -mcmodel=small -mno-red-zone
 37KBUILD_CFLAGS += $(cflags-y)
 38KBUILD_CFLAGS += -mno-mmx -mno-sse
 39KBUILD_CFLAGS += -ffreestanding -fshort-wchar
 40KBUILD_CFLAGS += -fno-stack-protector
 41KBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member)
 42KBUILD_CFLAGS += $(call cc-disable-warning, gnu)
 43KBUILD_CFLAGS += -Wno-pointer-sign
 44KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
 45KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
 46KBUILD_CFLAGS += -D__DISABLE_EXPORTS
 47# Disable relocation relaxation in case the link is not PIE.
 48KBUILD_CFLAGS += $(call as-option,-Wa$(comma)-mrelax-relocations=no)
 49KBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h
 50KBUILD_CFLAGS += $(CLANG_FLAGS)
 51
 52# sev.c indirectly inludes inat-table.h which is generated during
 53# compilation and stored in $(objtree). Add the directory to the includes so
 54# that the compiler finds it even with out-of-tree builds (make O=/some/path).
 55CFLAGS_sev.o += -I$(objtree)/arch/x86/lib/
 56
 57KBUILD_AFLAGS  := $(KBUILD_CFLAGS) -D__ASSEMBLY__
 58GCOV_PROFILE := n
 59UBSAN_SANITIZE :=n
 60
 61KBUILD_LDFLAGS := -m elf_$(UTS_MACHINE)
 62KBUILD_LDFLAGS += $(call ld-option,--no-ld-generated-unwind-info)
 63# Compressed kernel should be built as PIE since it may be loaded at any
 64# address by the bootloader.
 65LDFLAGS_vmlinux := -pie $(call ld-option, --no-dynamic-linker)
 66ifdef CONFIG_LD_ORPHAN_WARN
 67LDFLAGS_vmlinux += --orphan-handling=warn
 68endif
 69LDFLAGS_vmlinux += -T
 70
 71hostprogs	:= mkpiggy
 72HOST_EXTRACFLAGS += -I$(srctree)/tools/include
 73
 74sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGRSTVW] \(_text\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p'
 75
 76quiet_cmd_voffset = VOFFSET $@
 77      cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@
 78
 79targets += ../voffset.h
 
 80
 81$(obj)/../voffset.h: vmlinux FORCE
 82	$(call if_changed,voffset)
 83
 84$(obj)/misc.o: $(obj)/../voffset.h
 85
 86vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/kernel_info.o $(obj)/head_$(BITS).o \
 87	$(obj)/misc.o $(obj)/string.o $(obj)/cmdline.o $(obj)/error.o \
 88	$(obj)/piggy.o $(obj)/cpuflags.o
 89
 90vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o
 91vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/kaslr.o
 92ifdef CONFIG_X86_64
 93	vmlinux-objs-y += $(obj)/ident_map_64.o
 94	vmlinux-objs-y += $(obj)/idt_64.o $(obj)/idt_handlers_64.o
 95	vmlinux-objs-y += $(obj)/mem_encrypt.o
 96	vmlinux-objs-y += $(obj)/pgtable_64.o
 97	vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/sev.o
 98endif
 99
100vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o
101
102vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi_thunk_$(BITS).o
103efi-obj-$(CONFIG_EFI_STUB) = $(objtree)/drivers/firmware/efi/libstub/lib.a
104
105$(obj)/vmlinux: $(vmlinux-objs-y) $(efi-obj-y) FORCE
106	$(call if_changed,ld)
 
107
108OBJCOPYFLAGS_vmlinux.bin :=  -R .comment -S
109$(obj)/vmlinux.bin: vmlinux FORCE
110	$(call if_changed,objcopy)
111
112targets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs
113
114CMD_RELOCS = arch/x86/tools/relocs
 
 
115quiet_cmd_relocs = RELOCS  $@
116      cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $<
117$(obj)/vmlinux.relocs: vmlinux FORCE
118	$(call if_changed,relocs)
119
120vmlinux.bin.all-y := $(obj)/vmlinux.bin
121vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs
122
123$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE
124	$(call if_changed,gzip)
125$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE
126	$(call if_changed,bzip2)
127$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE
128	$(call if_changed,lzma)
129$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE
130	$(call if_changed,xzkern)
131$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE
132	$(call if_changed,lzo)
133$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE
134	$(call if_changed,lz4)
135$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE
136	$(call if_changed,zstd22)
137
138suffix-$(CONFIG_KERNEL_GZIP)	:= gz
139suffix-$(CONFIG_KERNEL_BZIP2)	:= bz2
140suffix-$(CONFIG_KERNEL_LZMA)	:= lzma
141suffix-$(CONFIG_KERNEL_XZ)	:= xz
142suffix-$(CONFIG_KERNEL_LZO) 	:= lzo
143suffix-$(CONFIG_KERNEL_LZ4) 	:= lz4
144suffix-$(CONFIG_KERNEL_ZSTD)	:= zst
145
146quiet_cmd_mkpiggy = MKPIGGY $@
147      cmd_mkpiggy = $(obj)/mkpiggy $< > $@
148
149targets += piggy.S
150$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE
151	$(call if_changed,mkpiggy)