1 # SPDX-License-Identifier: GPL-2.0 <<
2 # 1 #
3 # linux/arch/x86/boot/compressed/Makefile !! 2 # linux/arch/i386/boot/compressed/Makefile
4 # 3 #
5 # create a compressed vmlinux image from the o 4 # create a compressed vmlinux image from the original vmlinux
6 # 5 #
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 comm <<
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 <<
19 <<
20 targets := vmlinux vmlinux.bin vmlinux.bin.gz <<
21 vmlinux.bin.xz vmlinux.bin.lzo vmlinux <<
22 <<
23 # CLANG_FLAGS must come before any cc-disable- <<
24 # case of cross compiling, as it has the '--ta <<
25 # avoid errors with '-march=i386', and future <<
26 # be valid. <<
27 KBUILD_CFLAGS := -m$(BITS) -O2 $(CLANG_FLAGS) <<
28 KBUILD_CFLAGS += -fno-strict-aliasing -fPIE <<
29 KBUILD_CFLAGS += -Wundef <<
30 KBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING <<
31 cflags-$(CONFIG_X86_32) := -march=i386 <<
32 cflags-$(CONFIG_X86_64) := -mcmodel=small -mno <<
33 KBUILD_CFLAGS += $(cflags-y) <<
34 KBUILD_CFLAGS += -mno-mmx -mno-sse <<
35 KBUILD_CFLAGS += -ffreestanding -fshort-wchar <<
36 KBUILD_CFLAGS += -fno-stack-protector <<
37 KBUILD_CFLAGS += $(call cc-disable-warning, ad <<
38 KBUILD_CFLAGS += $(call cc-disable-warning, gn <<
39 KBUILD_CFLAGS += -Wno-pointer-sign <<
40 KBUILD_CFLAGS += $(call cc-option,-fmacro-pref <<
41 KBUILD_CFLAGS += -fno-asynchronous-unwind-tabl <<
42 KBUILD_CFLAGS += -D__DISABLE_EXPORTS <<
43 # Disable relocation relaxation in case the li <<
44 KBUILD_CFLAGS += $(call cc-option,-Wa$(comma)- <<
45 KBUILD_CFLAGS += -include $(srctree)/include/l <<
46 <<
47 # sev.c indirectly includes inat-table.h which <<
48 # compilation and stored in $(objtree). Add th <<
49 # that the compiler finds it even with out-of- <<
50 CFLAGS_sev.o += -I$(objtree)/arch/x86/lib/ <<
51 <<
52 KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBL <<
53 <<
54 KBUILD_LDFLAGS := -m elf_$(UTS_MACHINE) <<
55 KBUILD_LDFLAGS += $(call ld-option,--no-ld-gen <<
56 # Compressed kernel should be built as PIE sin <<
57 # address by the bootloader. <<
58 LDFLAGS_vmlinux := -pie $(call ld-option, --no <<
59 ifdef CONFIG_LD_ORPHAN_WARN <<
60 LDFLAGS_vmlinux += --orphan-handling=$(CONFIG_ <<
61 endif <<
62 LDFLAGS_vmlinux += -z noexecstack <<
63 ifeq ($(CONFIG_LD_IS_BFD),y) <<
64 LDFLAGS_vmlinux += $(call ld-option,--no-warn- <<
65 endif <<
66 ifeq ($(CONFIG_EFI_STUB),y) <<
67 # ensure that the static EFI stub library will <<
68 # never referenced explicitly from the startup <<
69 LDFLAGS_vmlinux += -u efi_pe_entry <<
70 endif <<
71 LDFLAGS_vmlinux += -T <<
72 <<
73 hostprogs := mkpiggy <<
74 HOST_EXTRACFLAGS += -I$(srctree)/tools/include <<
75 <<
76 sed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABCDGR <<
77 <<
78 quiet_cmd_voffset = VOFFSET $@ <<
79 cmd_voffset = $(NM) $< | sed -n $(sed-vo <<
80 <<
81 targets += ../voffset.h <<
82 <<
83 $(obj)/../voffset.h: vmlinux FORCE <<
84 $(call if_changed,voffset) <<
85 <<
86 $(obj)/misc.o: $(obj)/../voffset.h <<
87 <<
88 vmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/ke <<
89 $(obj)/misc.o $(obj)/string.o $(obj)/c <<
90 $(obj)/piggy.o $(obj)/cpuflags.o <<
91 <<
92 vmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/ <<
93 vmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj <<
94 ifdef CONFIG_X86_64 <<
95 vmlinux-objs-y += $(obj)/ident_map_64. <<
96 vmlinux-objs-y += $(obj)/idt_64.o $(ob <<
97 vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) <<
98 vmlinux-objs-y += $(obj)/pgtable_64.o <<
99 vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) <<
100 endif <<
101 <<
102 vmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o <<
103 vmlinux-objs-$(CONFIG_INTEL_TDX_GUEST) += $(ob <<
104 vmlinux-objs-$(CONFIG_UNACCEPTED_MEMORY) += $( <<
105 <<
106 vmlinux-objs-$(CONFIG_EFI) += $(obj)/efi.o <<
107 vmlinux-objs-$(CONFIG_EFI_MIXED) += $(obj)/efi <<
108 vmlinux-libs-$(CONFIG_EFI_STUB) += $(objtree)/ <<
109 6
110 $(obj)/vmlinux: $(vmlinux-objs-y) $(vmlinux-li !! 7 targets := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o piggy.o
>> 8 EXTRA_AFLAGS := -traditional
>> 9
>> 10 LDFLAGS_vmlinux := -Ttext $(IMAGE_OFFSET) -e startup_32
>> 11
>> 12 $(obj)/vmlinux: $(obj)/head.o $(obj)/misc.o $(obj)/piggy.o FORCE
111 $(call if_changed,ld) 13 $(call if_changed,ld)
>> 14 @:
112 15
113 OBJCOPYFLAGS_vmlinux.bin := -R .comment -S <<
114 $(obj)/vmlinux.bin: vmlinux FORCE 16 $(obj)/vmlinux.bin: vmlinux FORCE
115 $(call if_changed,objcopy) 17 $(call if_changed,objcopy)
116 18
117 targets += $(patsubst $(obj)/%,%,$(vmlinux-obj !! 19 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
118 !! 20 $(call if_changed,gzip)
119 # vmlinux.relocs is created by the vmlinux pos <<
120 $(obj)/vmlinux.relocs: vmlinux <<
121 @true <<
122 21
123 vmlinux.bin.all-y := $(obj)/vmlinux.bin !! 22 LDFLAGS_piggy.o := -r --format binary --oformat elf32-i386 -T
124 vmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $ <<
125 23
126 $(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FO !! 24 $(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
127 $(call if_changed,gzip) !! 25 $(call if_changed,ld)
128 $(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) F <<
129 $(call if_changed,bzip2_with_size) <<
130 $(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) <<
131 $(call if_changed,lzma_with_size) <<
132 $(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FO <<
133 $(call if_changed,xzkern_with_size) <<
134 $(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) F <<
135 $(call if_changed,lzo_with_size) <<
136 $(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) F <<
137 $(call if_changed,lz4_with_size) <<
138 $(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) F <<
139 $(call if_changed,zstd22_with_size) <<
140 <<
141 suffix-$(CONFIG_KERNEL_GZIP) := gz <<
142 suffix-$(CONFIG_KERNEL_BZIP2) := bz2 <<
143 suffix-$(CONFIG_KERNEL_LZMA) := lzma <<
144 suffix-$(CONFIG_KERNEL_XZ) := xz <<
145 suffix-$(CONFIG_KERNEL_LZO) := lzo <<
146 suffix-$(CONFIG_KERNEL_LZ4) := lz4 <<
147 suffix-$(CONFIG_KERNEL_ZSTD) := zst <<
148 <<
149 quiet_cmd_mkpiggy = MKPIGGY $@ <<
150 cmd_mkpiggy = $(obj)/mkpiggy $< > $@ <<
151 <<
152 targets += piggy.S <<
153 $(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) <<
154 $(call if_changed,mkpiggy) <<
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