arch/x86/config.mk

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