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                      $(call cc-option, -mpreferred-stack-boundary=2)
  15
  16 PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
  17 PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
  18
  19 ifdef CONFIG_SPL_BUILD
  20 IS_32BIT := y
  21 else
  22 ifndef CONFIG_X86_64
  23 IS_32BIT := y
  24 endif
  25 endif
  26
  27 ifeq ($(IS_32BIT),y)
  28 PLATFORM_CPPFLAGS += -march=i386 -m32
  29 else
  30 PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common
  31 endif
  32
  33 PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
  34
  35 PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions
  36 PLATFORM_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
  37
  38 LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
  39 LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
  40
  41 # This is used in the top-level Makefile which does not include
  42 # PLATFORM_LDFLAGS
  43 LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
  44
  45 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  46         -j .rel -j .rela -j .reloc
  47
  48 ifeq ($(IS_32BIT),y)
  49 CFLAGS_NON_EFI := -mregparm=3
  50 endif
  51 CFLAGS_EFI := -fpic -fshort-wchar
  52
  53 ifeq ($(CONFIG_EFI_STUB_64BIT),)
  54 CFLAGS_EFI += $(call cc-option, -mno-red-zone)
  55 EFIARCH = ia32
  56 EFIPAYLOAD_BFDTARGET = elf32-i386
  57 else
  58 EFIARCH = x86_64
  59 EFIPAYLOAD_BFDTARGET = elf64-x86-64
  60 endif
  61
  62 EFIPAYLOAD_BFDARCH = i386
  63
  64 LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
  65 EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
  66 OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
  67
  68 CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
  69 CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
  70
  71 ifeq ($(CONFIG_EFI_APP),y)
  72
  73 PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
  74 LDFLAGS_FINAL += -znocombreloc -shared
  75 LDSCRIPT := $(LDSCRIPT_EFI)
  76
  77 else
  78
  79 PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
  80 PLATFORM_LDFLAGS += --emit-relocs
  81 LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)
  82
  83 endif
  84
  85 ifdef CONFIG_X86_64
  86 ifndef CONFIG_SPL_BUILD
  87 PLATFORM_CPPFLAGS += -D__x86_64__
  88 else
  89 PLATFORM_CPPFLAGS += -D__I386__
  90 endif
  91 else
  92 PLATFORM_CPPFLAGS += -D__I386__
  93 endif
  94
  95 ifneq ($(CONFIG_EFI_STUB)$(CONFIG_CMD_BOOTEFI_HELLO_COMPILE),)
  96
  97 ifneq ($(CONFIG_EFI_STUB_64BIT),)
  98 EFI_LDS := elf_x86_64_efi.lds
  99 EFI_CRT0 := crt0_x86_64_efi.o
 100 EFI_RELOC := reloc_x86_64_efi.o
 101 EFI_TARGET := --target=efi-app-ia32
 102 else
 103 EFI_LDS := elf_ia32_efi.lds
 104 EFI_CRT0 := crt0_ia32_efi.o
 105 EFI_RELOC := reloc_ia32_efi.o
 106 EFI_TARGET := --target=efi-app-x86_64
 107 endif
 108
 109 endif