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 EFI_IS_32BIT := $(IS_32BIT)
  24 ifdef CONFIG_EFI_STUB_64BIT
  25 EFI_IS_32BIT :=
  26 endif
  27
  28 ifeq ($(IS_32BIT),y)
  29 PLATFORM_CPPFLAGS += -march=i386 -m32
  30 else
  31 PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common -march=core2 -m64
  32 PLATFORM_CPPFLAGS += -mno-mmx -mno-sse
  33 endif
  34
  35 PLATFORM_RELFLAGS += -fdata-sections -ffunction-sections -fvisibility=hidden
  36
  37 KBUILD_LDFLAGS += -Bsymbolic -Bsymbolic-functions
  38 KBUILD_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
  39
  40 # This is used in the top-level Makefile which does not include
  41 # KBUILD_LDFLAGS
  42 LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined -s
  43
  44 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  45         -j .rel -j .rela -j .reloc --strip-all
  46
  47 # Compiler flags to be added when building UEFI applications
  48 CFLAGS_EFI := -fpic -fshort-wchar
  49 # Compiler flags to be removed when building UEFI applications
  50 CFLAGS_NON_EFI := -mregparm=3 -fstack-protector-strong
  51
  52 ifeq ($(IS_32BIT),y)
  53 EFIPAYLOAD_BFDARCH = i386
  54 else
  55 CFLAGS_EFI += $(call cc-option, -mno-red-zone)
  56 EFIPAYLOAD_BFDARCH = x86_64
  57 endif
  58
  59 ifeq ($(EFI_IS_32BIT),y)
  60 EFIARCH = ia32
  61 EFIPAYLOAD_BFDTARGET = elf32-i386
  62 else
  63 EFIARCH = x86_64
  64 EFIPAYLOAD_BFDTARGET = elf64-x86-64
  65 endif
  66
  67 LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
  68 EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
  69 OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
  70
  71 CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
  72 CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
  73
  74 ifeq ($(CONFIG_EFI_APP),y)
  75
  76 PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
  77 LDFLAGS_FINAL += -znocombreloc -shared
  78 LDSCRIPT := $(LDSCRIPT_EFI)
  79
  80 else
  81
  82 ifeq ($(IS_32BIT),y)
  83 PLATFORM_CPPFLAGS += -mregparm=3
  84 endif
  85 KBUILD_LDFLAGS += --emit-relocs
  86 LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)
  87
  88 endif
  89
  90 ifdef CONFIG_X86_64
  91 ifndef CONFIG_SPL_BUILD
  92 PLATFORM_CPPFLAGS += -D__x86_64__
  93 else
  94 PLATFORM_CPPFLAGS += -D__I386__
  95 endif
  96 else
  97 PLATFORM_CPPFLAGS += -D__I386__
  98 endif
  99
 100 ifdef CONFIG_EFI_STUB
 101
 102 ifdef CONFIG_EFI_STUB_64BIT
 103 EFI_LDS := elf_x86_64_efi.lds
 104 EFI_CRT0 := crt0_x86_64_efi.o
 105 EFI_RELOC := reloc_x86_64_efi.o
 106 else
 107 EFI_LDS := elf_ia32_efi.lds
 108 EFI_CRT0 := crt0_ia32_efi.o
 109 EFI_RELOC := reloc_ia32_efi.o
 110 endif
 111
 112 else
 113
 114 ifdef CONFIG_X86_64
 115 EFI_LDS := elf_x86_64_efi.lds
 116 EFI_CRT0 := crt0_x86_64_efi.o
 117 EFI_RELOC := reloc_x86_64_efi.o
 118 else
 119 EFI_LDS := elf_ia32_efi.lds
 120 EFI_CRT0 := crt0_ia32_efi.o
 121 EFI_RELOC := reloc_ia32_efi.o
 122 endif
 123
 124 endif
 125
 126 ifdef CONFIG_X86_64
 127 EFI_TARGET := --target=efi-app-x86_64
 128 else
 129 EFI_TARGET := --target=efi-app-ia32
 130 endif