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