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 -m64
  27 endif
  28
  29 PLATFORM_RELFLAGS += -fdata-sections -ffunction-sections -fvisibility=hidden
  30
  31 PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions
  32 PLATFORM_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
  33
  34 # This is used in the top-level Makefile which does not include
  35 # PLATFORM_LDFLAGS
  36 LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
  37
  38 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  39         -j .rel -j .rela -j .reloc
  40
  41 ifeq ($(IS_32BIT),y)
  42 CFLAGS_NON_EFI := -mregparm=3
  43 endif
  44 CFLAGS_EFI := -fpic -fshort-wchar
  45
  46 ifeq ($(CONFIG_EFI_STUB_64BIT),)
  47 CFLAGS_EFI += $(call cc-option, -mno-red-zone)
  48 EFIARCH = ia32
  49 EFIPAYLOAD_BFDTARGET = elf32-i386
  50 else
  51 EFIARCH = x86_64
  52 EFIPAYLOAD_BFDTARGET = elf64-x86-64
  53 endif
  54
  55 EFIPAYLOAD_BFDARCH = i386
  56
  57 LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
  58 EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
  59 OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
  60
  61 CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
  62 CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
  63
  64 ifeq ($(CONFIG_EFI_APP),y)
  65
  66 PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
  67 LDFLAGS_FINAL += -znocombreloc -shared
  68 LDSCRIPT := $(LDSCRIPT_EFI)
  69
  70 else
  71
  72 PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
  73 PLATFORM_LDFLAGS += --emit-relocs
  74 LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)
  75
  76 endif
  77
  78 ifdef CONFIG_X86_64
  79 ifndef CONFIG_SPL_BUILD
  80 PLATFORM_CPPFLAGS += -D__x86_64__
  81 else
  82 PLATFORM_CPPFLAGS += -D__I386__
  83 endif
  84 else
  85 PLATFORM_CPPFLAGS += -D__I386__
  86 endif
  87
  88 ifdef CONFIG_EFI_STUB
  89
  90 ifdef CONFIG_EFI_STUB_64BIT
  91 EFI_LDS := elf_x86_64_efi.lds
  92 EFI_CRT0 := crt0_x86_64_efi.o
  93 EFI_RELOC := reloc_x86_64_efi.o
  94 else
  95 EFI_LDS := elf_ia32_efi.lds
  96 EFI_CRT0 := crt0_ia32_efi.o
  97 EFI_RELOC := reloc_ia32_efi.o
  98 endif
  99
 100 else
 101
 102 ifdef CONFIG_X86_64
 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 endif
 113
 114 ifdef CONFIG_X86_64
 115 EFI_TARGET := --target=efi-app-x86_64
 116 else
 117 EFI_TARGET := --target=efi-app-ia32
 118 endif