config.mk 2.7 KB

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  1. # SPDX-License-Identifier: GPL-2.0+
  2. #
  3. # (C) Copyright 2000-2002
  4. # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
  5. CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
  6. PLATFORM_CPPFLAGS += -fomit-frame-pointer
  7. PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \
  8. $(call cc-option, -fno-unit-at-a-time))
  9. PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
  10. PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
  11. ifdef CONFIG_SPL_BUILD
  12. IS_32BIT := y
  13. else
  14. ifndef CONFIG_X86_64
  15. IS_32BIT := y
  16. endif
  17. endif
  18. ifeq ($(IS_32BIT),y)
  19. PLATFORM_CPPFLAGS += -march=i386 -m32
  20. else
  21. PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common -march=core2 -m64
  22. PLATFORM_CPPFLAGS += -mno-mmx -mno-sse
  23. endif
  24. PLATFORM_RELFLAGS += -fdata-sections -ffunction-sections -fvisibility=hidden
  25. KBUILD_LDFLAGS += -Bsymbolic -Bsymbolic-functions
  26. KBUILD_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
  27. # This is used in the top-level Makefile which does not include
  28. # KBUILD_LDFLAGS
  29. LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined -s
  30. OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
  31. -j .rel -j .rela -j .reloc
  32. ifeq ($(IS_32BIT),y)
  33. CFLAGS_NON_EFI := -mregparm=3
  34. endif
  35. CFLAGS_EFI := -fpic -fshort-wchar
  36. ifeq ($(CONFIG_EFI_STUB_64BIT),)
  37. CFLAGS_EFI += $(call cc-option, -mno-red-zone)
  38. EFIARCH = ia32
  39. EFIPAYLOAD_BFDTARGET = elf32-i386
  40. else
  41. EFIARCH = x86_64
  42. EFIPAYLOAD_BFDTARGET = elf64-x86-64
  43. endif
  44. EFIPAYLOAD_BFDARCH = i386
  45. LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
  46. EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
  47. OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
  48. CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
  49. CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
  50. ifeq ($(CONFIG_EFI_APP),y)
  51. PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
  52. LDFLAGS_FINAL += -znocombreloc -shared -s
  53. LDSCRIPT := $(LDSCRIPT_EFI)
  54. else
  55. PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
  56. KBUILD_LDFLAGS += --emit-relocs
  57. LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_SPL_BUILD),,-pie)
  58. endif
  59. ifdef CONFIG_X86_64
  60. ifndef CONFIG_SPL_BUILD
  61. PLATFORM_CPPFLAGS += -D__x86_64__
  62. else
  63. PLATFORM_CPPFLAGS += -D__I386__
  64. endif
  65. else
  66. PLATFORM_CPPFLAGS += -D__I386__
  67. endif
  68. ifdef CONFIG_EFI_STUB
  69. ifdef CONFIG_EFI_STUB_64BIT
  70. EFI_LDS := elf_x86_64_efi.lds
  71. EFI_CRT0 := crt0_x86_64_efi.o
  72. EFI_RELOC := reloc_x86_64_efi.o
  73. else
  74. EFI_LDS := elf_ia32_efi.lds
  75. EFI_CRT0 := crt0_ia32_efi.o
  76. EFI_RELOC := reloc_ia32_efi.o
  77. endif
  78. else
  79. ifdef CONFIG_X86_64
  80. EFI_LDS := elf_x86_64_efi.lds
  81. EFI_CRT0 := crt0_x86_64_efi.o
  82. EFI_RELOC := reloc_x86_64_efi.o
  83. else
  84. EFI_LDS := elf_ia32_efi.lds
  85. EFI_CRT0 := crt0_ia32_efi.o
  86. EFI_RELOC := reloc_ia32_efi.o
  87. endif
  88. endif
  89. ifdef CONFIG_X86_64
  90. EFI_TARGET := --target=efi-app-x86_64
  91. else
  92. EFI_TARGET := --target=efi-app-ia32
  93. endif