arch/x86/config.mk

   1 # SPDX-License-Identifier: GPL-2.0+
   2 #
   3 # (C) Copyright 2000-2002
   4 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5
   6 CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
   7
   8 PLATFORM_CPPFLAGS += -fomit-frame-pointer
   9 PF_CPPFLAGS_X86   := $(call cc-option, -fno-toplevel-reorder, \
  10                      $(call cc-option, -fno-unit-at-a-time))
  11
  12 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
  13 PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
  14
  15 ifdef CONFIG_SPL_BUILD
  16 IS_32BIT := y
  17 else
  18 ifndef CONFIG_X86_64
  19 IS_32BIT := y
  20 endif
  21 endif
  22
  23 ifeq ($(IS_32BIT),y)
  24 PLATFORM_CPPFLAGS += -march=i386 -m32
  25 else
  26 PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common -march=core2 -m64
  27 PLATFORM_CPPFLAGS += -mno-mmx -mno-sse
  28 endif
  29
  30 PLATFORM_RELFLAGS += -fdata-sections -ffunction-sections -fvisibility=hidden
  31
  32 KBUILD_LDFLAGS += -Bsymbolic -Bsymbolic-functions
  33 KBUILD_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
  34
  35 # This is used in the top-level Makefile which does not include
  36 # KBUILD_LDFLAGS
  37 LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined -s
  38
  39 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  40         -j .rel -j .rela -j .reloc
  41
  42 # Compiler flags to be added when building UEFI applications
  43 CFLAGS_EFI := -fpic -fshort-wchar
  44 # Compiler flags to be removed when building UEFI applications
  45 CFLAGS_NON_EFI := -mregparm=3 -fstack-protector-strong
  46
  47 ifeq ($(CONFIG_EFI_STUB_64BIT),)
  48 CFLAGS_EFI += $(call cc-option, -mno-red-zone)
  49 EFIARCH = ia32
  50 EFIPAYLOAD_BFDTARGET = elf32-i386
  51 else
  52 EFIARCH = x86_64
  53 EFIPAYLOAD_BFDTARGET = elf64-x86-64
  54 endif
  55
  56 EFIPAYLOAD_BFDARCH = i386
  57
  58 LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
  59 EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
  60 OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
  61
  62 CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
  63 CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
  64
  65 ifeq ($(CONFIG_EFI_APP),y)
  66
  67 PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
  68 LDFLAGS_FINAL += -znocombreloc -shared -s
  69 LDSCRIPT := $(LDSCRIPT_EFI)
  70
  71 else
  72
  73 ifeq ($(IS_32BIT),y)
  74 PLATFORM_CPPFLAGS += -mregparm=3
  75 endif
  76 KBUILD_LDFLAGS += --emit-relocs
  77 LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)
  78
  79 endif
  80
  81 ifdef CONFIG_X86_64
  82 ifndef CONFIG_SPL_BUILD
  83 PLATFORM_CPPFLAGS += -D__x86_64__
  84 else
  85 PLATFORM_CPPFLAGS += -D__I386__
  86 endif
  87 else
  88 PLATFORM_CPPFLAGS += -D__I386__
  89 endif
  90
  91 ifdef CONFIG_EFI_STUB
  92
  93 ifdef CONFIG_EFI_STUB_64BIT
  94 EFI_LDS := elf_x86_64_efi.lds
  95 EFI_CRT0 := crt0_x86_64_efi.o
  96 EFI_RELOC := reloc_x86_64_efi.o
  97 else
  98 EFI_LDS := elf_ia32_efi.lds
  99 EFI_CRT0 := crt0_ia32_efi.o
 100 EFI_RELOC := reloc_ia32_efi.o
 101 endif
 102
 103 else
 104
 105 ifdef CONFIG_X86_64
 106 EFI_LDS := elf_x86_64_efi.lds
 107 EFI_CRT0 := crt0_x86_64_efi.o
 108 EFI_RELOC := reloc_x86_64_efi.o
 109 else
 110 EFI_LDS := elf_ia32_efi.lds
 111 EFI_CRT0 := crt0_ia32_efi.o
 112 EFI_RELOC := reloc_ia32_efi.o
 113 endif
 114
 115 endif
 116
 117 ifdef CONFIG_X86_64
 118 EFI_TARGET := --target=efi-app-x86_64
 119 else
 120 EFI_TARGET := --target=efi-app-ia32
 121 endif