1b2441318SGreg Kroah-Hartman# SPDX-License-Identifier: GPL-2.0 2db569afaSSam Ravnborg# 3db569afaSSam Ravnborg# linux/arch/x86/boot/compressed/Makefile 4db569afaSSam Ravnborg# 5db569afaSSam Ravnborg# create a compressed vmlinux image from the original vmlinux 6db569afaSSam Ravnborg# 7fb7183efSKees Cook# vmlinuz is: 8fb7183efSKees Cook# decompression code (*.o) 9fb7183efSKees Cook# asm globals (piggy.S), including: 10fb7183efSKees Cook# vmlinux.bin.(gz|bz2|lzma|...) 11fb7183efSKees Cook# 12fb7183efSKees Cook# vmlinux.bin is: 13fb7183efSKees Cook# vmlinux stripped of debugging and comments 14fb7183efSKees Cook# vmlinux.bin.all is: 15fb7183efSKees Cook# vmlinux.bin + vmlinux.relocs 16fb7183efSKees Cook# vmlinux.bin.(gz|bz2|lzma|...) is: 17fb7183efSKees Cook# (see scripts/Makefile.lib size_append) 18fb7183efSKees Cook# compressed vmlinux.bin.all + u32 size of vmlinux.bin.all 19db569afaSSam Ravnborg 20f9b493acSKyungsik Leetargets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 vmlinux.bin.lzma \ 21fb46d057SNick Terrell vmlinux.bin.xz vmlinux.bin.lzo vmlinux.bin.lz4 vmlinux.bin.zst 22db569afaSSam Ravnborg 235fe392ffSNathan Chancellor# CLANG_FLAGS must come before any cc-disable-warning or cc-option calls in 245fe392ffSNathan Chancellor# case of cross compiling, as it has the '--target=' flag, which is needed to 255fe392ffSNathan Chancellor# avoid errors with '-march=i386', and future flags may depend on the target to 265fe392ffSNathan Chancellor# be valid. 275fe392ffSNathan ChancellorKBUILD_CFLAGS := -m$(BITS) -O2 $(CLANG_FLAGS) 28ee2ab467SNathan ChancellorKBUILD_CFLAGS += -std=gnu11 29527afc21SArvind SankarKBUILD_CFLAGS += -fno-strict-aliasing -fPIE 30a554e740SNick DesaulniersKBUILD_CFLAGS += -Wundef 3195a38f34SH. Peter AnvinKBUILD_CFLAGS += -DDISABLE_BRANCH_PROFILING 3217a2a9b5SH. Peter Anvincflags-$(CONFIG_X86_32) := -march=i386 336ba0efa4SJoerg Roedelcflags-$(CONFIG_X86_64) := -mcmodel=small -mno-red-zone 34db569afaSSam RavnborgKBUILD_CFLAGS += $(cflags-y) 358b3b005dSH. Peter AnvinKBUILD_CFLAGS += -mno-mmx -mno-sse 36e1ac4b24SChester LinKBUILD_CFLAGS += -ffreestanding -fshort-wchar 37893ab004SMasahiro YamadaKBUILD_CFLAGS += -fno-stack-protector 3820c6c189SMatthias KaehlckeKBUILD_CFLAGS += $(call cc-disable-warning, address-of-packed-member) 396c3b56b1SMatthias KaehlckeKBUILD_CFLAGS += $(call cc-disable-warning, gnu) 40dca5203eSNathan ChancellorKBUILD_CFLAGS += -Wno-pointer-sign 41003602adSArvind SankarKBUILD_CFLAGS += -fno-asynchronous-unwind-tables 42fb46d057SNick TerrellKBUILD_CFLAGS += -D__DISABLE_EXPORTS 4309e43968SArvind Sankar# Disable relocation relaxation in case the link is not PIE. 44994f5f78SNick DesaulniersKBUILD_CFLAGS += $(call cc-option,-Wa$(comma)-mrelax-relocations=no) 45e544ea57SArd BiesheuvelKBUILD_CFLAGS += -include $(srctree)/include/linux/hidden.h 46db569afaSSam Ravnborg 47ae862964SArd Biesheuvel# sev-decode-insn.c indirectly includes inat-table.c which is generated during 48597cfe48SJoerg Roedel# compilation and stored in $(objtree). Add the directory to the includes so 49597cfe48SJoerg Roedel# that the compiler finds it even with out-of-tree builds (make O=/some/path). 50ae862964SArd BiesheuvelCFLAGS_sev-handle-vc.o += -I$(objtree)/arch/x86/lib/ 51597cfe48SJoerg Roedel 52db569afaSSam RavnborgKBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__ 53db569afaSSam Ravnborg 54d503ac53SMasahiro YamadaKBUILD_LDFLAGS := -m elf_$(UTS_MACHINE) 55d1c0272bSKees CookKBUILD_LDFLAGS += $(call ld-option,--no-ld-generated-unwind-info) 56a980ce35SH.J. Lu# Compressed kernel should be built as PIE since it may be loaded at any 57a980ce35SH.J. Lu# address by the bootloader. 58527afc21SArvind SankarLDFLAGS_vmlinux := -pie $(call ld-option, --no-dynamic-linker) 5959612b24SNathan Chancellorifdef CONFIG_LD_ORPHAN_WARN 60e1789d7cSXin LiLDFLAGS_vmlinux += --orphan-handling=$(CONFIG_LD_ORPHAN_WARN_LEVEL) 6159612b24SNathan Chancellorendif 62ffcf9c57SNick DesaulniersLDFLAGS_vmlinux += -z noexecstack 63ffcf9c57SNick Desaulniersifeq ($(CONFIG_LD_IS_BFD),y) 64ffcf9c57SNick DesaulniersLDFLAGS_vmlinux += $(call ld-option,--no-warn-rwx-segments) 65ffcf9c57SNick Desaulniersendif 66a1b87d54SArd Biesheuvelifeq ($(CONFIG_EFI_STUB),y) 67a1b87d54SArd Biesheuvel# ensure that the static EFI stub library will be pulled in, even if it is 68a1b87d54SArd Biesheuvel# never referenced explicitly from the startup code 69a1b87d54SArd BiesheuvelLDFLAGS_vmlinux += -u efi_pe_entry 70a1b87d54SArd Biesheuvelendif 713f086189SArvind SankarLDFLAGS_vmlinux += -T 72db569afaSSam Ravnborg 735f2fb52fSMasahiro Yamadahostprogs := mkpiggy 7412871c56SMatt FlemingHOST_EXTRACFLAGS += -I$(srctree)/tools/include 7502a884c0SH. Peter Anvin 764cecebf2SArd Biesheuvelsed-voffset := -e 's/^\([0-9a-fA-F]*\) [ABbCDGRSTtVW] \(_text\|__start_rodata\|__bss_start\|_end\)$$/\#define VO_\2 _AC(0x\1,UL)/p' 7767b66625SYinghai Lu 7867b66625SYinghai Luquiet_cmd_voffset = VOFFSET $@ 7967b66625SYinghai Lu cmd_voffset = $(NM) $< | sed -n $(sed-voffset) > $@ 8067b66625SYinghai Lu 8167b66625SYinghai Lutargets += ../voffset.h 8267b66625SYinghai Lu 8367b66625SYinghai Lu$(obj)/../voffset.h: vmlinux FORCE 8467b66625SYinghai Lu $(call if_changed,voffset) 8567b66625SYinghai Lu 8667b66625SYinghai Lu$(obj)/misc.o: $(obj)/../voffset.h 8767b66625SYinghai Lu 882c33c27fSDaniel Kipervmlinux-objs-y := $(obj)/vmlinux.lds $(obj)/kernel_info.o $(obj)/head_$(BITS).o \ 892c33c27fSDaniel Kiper $(obj)/misc.o $(obj)/string.o $(obj)/cmdline.o $(obj)/error.o \ 909e6abd2aSJosh Triplett $(obj)/piggy.o $(obj)/cpuflags.o 919e6abd2aSJosh Triplett 923afed06aSJosh Triplettvmlinux-objs-$(CONFIG_EARLY_PRINTK) += $(obj)/early_serial_console.o 939b238748SKees Cookvmlinux-objs-$(CONFIG_RANDOMIZE_BASE) += $(obj)/kaslr.o 943a94707dSKees Cookifdef CONFIG_X86_64 955f2bb016SJoerg Roedel vmlinux-objs-y += $(obj)/ident_map_64.o 9664e68263SJoerg Roedel vmlinux-objs-y += $(obj)/idt_64.o $(obj)/idt_handlers_64.o 9761de13dfSArd Biesheuvel vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/mem_encrypt.o 9808529078SKirill A. Shutemov vmlinux-objs-y += $(obj)/pgtable_64.o 99ae862964SArd Biesheuvel vmlinux-objs-$(CONFIG_AMD_MEM_ENCRYPT) += $(obj)/sev.o $(obj)/sev-handle-vc.o 1003a94707dSKees Cookendif 101291f3632SMatt Fleming 1023a63f70bSChao Fanvmlinux-objs-$(CONFIG_ACPI) += $(obj)/acpi.o 10375d090fdSKirill A. Shutemovvmlinux-objs-$(CONFIG_INTEL_TDX_GUEST) += $(obj)/tdx.o $(obj)/tdcall.o $(obj)/tdx-shared.o 104745e3ed8SKirill A. Shutemovvmlinux-objs-$(CONFIG_UNACCEPTED_MEMORY) += $(obj)/mem.o 1053a63f70bSChao Fan 1067c4146e8SMichael Rothvmlinux-objs-$(CONFIG_EFI) += $(obj)/efi.o 107b2747f10SBenjamin Segallvmlinux-libs-$(CONFIG_EFI_STUB) += $(objtree)/drivers/firmware/efi/libstub/lib.a 1085a67da1fSArd Biesheuvelvmlinux-libs-$(CONFIG_X86_64) += $(objtree)/arch/x86/boot/startup/lib.a 109*61b57d35SVitaly Kuznetsovvmlinux-objs-$(CONFIG_EFI_SBAT) += $(obj)/sbat.o 110*61b57d35SVitaly Kuznetsov 111*61b57d35SVitaly Kuznetsovifdef CONFIG_EFI_SBAT 112*61b57d35SVitaly Kuznetsov$(obj)/sbat.o: $(CONFIG_EFI_SBAT_FILE) 113*61b57d35SVitaly Kuznetsovendif 114291f3632SMatt Fleming 115b2747f10SBenjamin Segall$(obj)/vmlinux: $(vmlinux-objs-y) $(vmlinux-libs-y) FORCE 116527afc21SArvind Sankar $(call if_changed,ld) 117db569afaSSam Ravnborg 118099e1377SIan CampbellOBJCOPYFLAGS_vmlinux.bin := -R .comment -S 119db569afaSSam Ravnborg$(obj)/vmlinux.bin: vmlinux FORCE 120db569afaSSam Ravnborg $(call if_changed,objcopy) 121db569afaSSam Ravnborg 1229a1cb471SJosh Tripletttargets += $(patsubst $(obj)/%,%,$(vmlinux-objs-y)) vmlinux.bin.all vmlinux.relocs 123db569afaSSam Ravnborg 124e6a03a66SArd BiesheuvelCMD_RELOCS = arch/x86/tools/relocs 125e6a03a66SArd Biesheuvelquiet_cmd_relocs = RELOCS $@ 126e6a03a66SArd Biesheuvel cmd_relocs = $(CMD_RELOCS) $< > $@;$(CMD_RELOCS) --abs-relocs $< 127e6a03a66SArd Biesheuvel 128e6a03a66SArd Biesheuvel$(obj)/vmlinux.relocs: vmlinux.unstripped FORCE 129e6a03a66SArd Biesheuvel $(call if_changed,relocs) 130db569afaSSam Ravnborg 131db569afaSSam Ravnborgvmlinux.bin.all-y := $(obj)/vmlinux.bin 1325f11e020SH. Peter Anvinvmlinux.bin.all-$(CONFIG_X86_NEED_RELOCS) += $(obj)/vmlinux.relocs 133db569afaSSam Ravnborg 1345f11e020SH. Peter Anvin$(obj)/vmlinux.bin.gz: $(vmlinux.bin.all-y) FORCE 135db569afaSSam Ravnborg $(call if_changed,gzip) 1365f11e020SH. Peter Anvin$(obj)/vmlinux.bin.bz2: $(vmlinux.bin.all-y) FORCE 1377ce7e984SMasahiro Yamada $(call if_changed,bzip2_with_size) 1385f11e020SH. Peter Anvin$(obj)/vmlinux.bin.lzma: $(vmlinux.bin.all-y) FORCE 1397ce7e984SMasahiro Yamada $(call if_changed,lzma_with_size) 14030314804SLasse Collin$(obj)/vmlinux.bin.xz: $(vmlinux.bin.all-y) FORCE 1417ce7e984SMasahiro Yamada $(call if_changed,xzkern_with_size) 14213510997SAlbin Tonnerre$(obj)/vmlinux.bin.lzo: $(vmlinux.bin.all-y) FORCE 1437ce7e984SMasahiro Yamada $(call if_changed,lzo_with_size) 144f9b493acSKyungsik Lee$(obj)/vmlinux.bin.lz4: $(vmlinux.bin.all-y) FORCE 1457ce7e984SMasahiro Yamada $(call if_changed,lz4_with_size) 146fb46d057SNick Terrell$(obj)/vmlinux.bin.zst: $(vmlinux.bin.all-y) FORCE 1477ce7e984SMasahiro Yamada $(call if_changed,zstd22_with_size) 148db569afaSSam Ravnborg 149283ab1c0SH. Peter Anvinsuffix-$(CONFIG_KERNEL_GZIP) := gz 150283ab1c0SH. Peter Anvinsuffix-$(CONFIG_KERNEL_BZIP2) := bz2 151283ab1c0SH. Peter Anvinsuffix-$(CONFIG_KERNEL_LZMA) := lzma 15230314804SLasse Collinsuffix-$(CONFIG_KERNEL_XZ) := xz 15313510997SAlbin Tonnerresuffix-$(CONFIG_KERNEL_LZO) := lzo 154f9b493acSKyungsik Leesuffix-$(CONFIG_KERNEL_LZ4) := lz4 155fb46d057SNick Terrellsuffix-$(CONFIG_KERNEL_ZSTD) := zst 156ae03c499SAlain Knaff 15702a884c0SH. Peter Anvinquiet_cmd_mkpiggy = MKPIGGY $@ 158172caf19SMasahiro Yamada cmd_mkpiggy = $(obj)/mkpiggy $< > $@ 15902a884c0SH. Peter Anvin 16002a884c0SH. Peter Anvintargets += piggy.S 16102a884c0SH. Peter Anvin$(obj)/piggy.S: $(obj)/vmlinux.bin.$(suffix-y) $(obj)/mkpiggy FORCE 16202a884c0SH. Peter Anvin $(call if_changed,mkpiggy) 163