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 PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions
  33 PLATFORM_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
  34
  35 # This is used in the top-level Makefile which does not include
  36 # PLATFORM_LDFLAGS
  37 LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
  38
  39 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  40         -j .rel -j .rela -j .reloc
  41
  42 ifeq ($(IS_32BIT),y)
  43 CFLAGS_NON_EFI := -mregparm=3
  44 endif
  45 CFLAGS_EFI := -fpic -fshort-wchar
  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
  69 LDSCRIPT := $(LDSCRIPT_EFI)
  70
  71 else
  72
  73 PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
  74 PLATFORM_LDFLAGS += --emit-relocs
  75 LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)
  76
  77 endif
  78
  79 ifdef CONFIG_X86_64
  80 ifndef CONFIG_SPL_BUILD
  81 PLATFORM_CPPFLAGS += -D__x86_64__
  82 else
  83 PLATFORM_CPPFLAGS += -D__I386__
  84 endif
  85 else
  86 PLATFORM_CPPFLAGS += -D__I386__
  87 endif
  88
  89 ifdef CONFIG_EFI_STUB
  90
  91 ifdef CONFIG_EFI_STUB_64BIT
  92 EFI_LDS := elf_x86_64_efi.lds
  93 EFI_CRT0 := crt0_x86_64_efi.o
  94 EFI_RELOC := reloc_x86_64_efi.o
  95 else
  96 EFI_LDS := elf_ia32_efi.lds
  97 EFI_CRT0 := crt0_ia32_efi.o
  98 EFI_RELOC := reloc_ia32_efi.o
  99 endif
 100
 101 else
 102
 103 ifdef CONFIG_X86_64
 104 EFI_LDS := elf_x86_64_efi.lds
 105 EFI_CRT0 := crt0_x86_64_efi.o
 106 EFI_RELOC := reloc_x86_64_efi.o
 107 else
 108 EFI_LDS := elf_ia32_efi.lds
 109 EFI_CRT0 := crt0_ia32_efi.o
 110 EFI_RELOC := reloc_ia32_efi.o
 111 endif
 112
 113 endif
 114
 115 ifdef CONFIG_X86_64
 116 EFI_TARGET := --target=efi-app-x86_64
 117 else
 118 EFI_TARGET := --target=efi-app-ia32
 119 endif