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 += $(PF_CPPFLAGS_X86)
  17 PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
  18 PLATFORM_CPPFLAGS += -march=i386 -m32
  19
  20 PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
  21
  22 PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions -m elf_i386
  23
  24 LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
  25 LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
  26
  27 # This is used in the top-level Makefile which does not include
  28 # PLATFORM_LDFLAGS
  29 LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
  30
  31 OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  32         -j .rel -j .rela -j .reloc
  33
  34 CFLAGS_NON_EFI := -mregparm=3
  35 CFLAGS_EFI := -fpic -fshort-wchar
  36
  37 ifeq ($(CONFIG_EFI_STUB_64BIT),)
  38 CFLAGS_EFI += $(call cc-option, -mno-red-zone)
  39 EFIARCH = ia32
  40 EFIPAYLOAD_BFDTARGET = elf32-i386
  41 else
  42 EFIARCH = x86_64
  43 EFIPAYLOAD_BFDTARGET = elf64-x86-64
  44 endif
  45
  46 EFIPAYLOAD_BFDARCH = i386
  47
  48 LDSCRIPT_EFI := $(srctree)/$(CPUDIR)/efi/elf_$(EFIARCH)_efi.lds
  49 EFISTUB := crt0-efi-$(EFIARCH).o reloc_$(EFIARCH).o
  50 OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
  51
  52 CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
  53 CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
  54
  55 ifeq ($(CONFIG_EFI_APP),y)
  56
  57 PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
  58 LDFLAGS_FINAL += -znocombreloc -shared
  59 LDSCRIPT := $(LDSCRIPT_EFI)
  60
  61 else
  62
  63 PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
  64 PLATFORM_LDFLAGS += --emit-relocs
  65 LDFLAGS_FINAL += --gc-sections -pie
  66
  67 endif