1# SPDX-License-Identifier: GPL-2.0+
2#
3# (C) Copyright 2000-2002
4# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5
6PLATFORM_CPPFLAGS += -fomit-frame-pointer
7PF_CPPFLAGS_X86   := $(call cc-option, -fno-toplevel-reorder, \
8		     $(call cc-option, -fno-unit-at-a-time))
9
10PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
11PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
12
13ifdef CONFIG_XPL_BUILD
14IS_32BIT := y
15else
16ifndef CONFIG_X86_64
17IS_32BIT := y
18endif
19endif
20
21EFI_IS_32BIT := $(IS_32BIT)
22ifdef CONFIG_EFI_STUB_64BIT
23EFI_IS_32BIT :=
24endif
25
26ifeq ($(IS_32BIT),y)
27PLATFORM_CPPFLAGS += -march=i386 -m32
28else
29PLATFORM_CPPFLAGS += $(if $(CONFIG_XPL_BUILD),,-fpic) -fno-common -march=core2 -m64
30
31ifndef CONFIG_X86_HARDFP
32PLATFORM_CPPFLAGS += -mno-mmx -mno-sse
33endif
34
35endif # IS_32BIT
36
37PLATFORM_RELFLAGS += -fdata-sections -ffunction-sections -fvisibility=hidden
38
39KBUILD_LDFLAGS += -Bsymbolic -Bsymbolic-functions
40KBUILD_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
41
42# This is used in the top-level Makefile which does not include
43# KBUILD_LDFLAGS
44LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined \
45		       -s -zexecstack
46
47OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
48	-j .rel -j .rela -j .reloc --strip-all
49
50# Compiler flags to be added when building UEFI applications
51CFLAGS_EFI := -fpic -fshort-wchar
52# Compiler flags to be removed when building UEFI applications
53CFLAGS_NON_EFI := -mregparm=3 -fstack-protector-strong
54
55ifeq ($(IS_32BIT),y)
56EFIPAYLOAD_BFDARCH = i386
57else
58CFLAGS_EFI += $(call cc-option, -mno-red-zone)
59EFIPAYLOAD_BFDARCH = x86_64
60endif
61
62ifeq ($(EFI_IS_32BIT),y)
63EFIARCH = ia32
64EFIPAYLOAD_BFDTARGET = elf32-i386
65else
66EFIARCH = x86_64
67EFIPAYLOAD_BFDTARGET = elf64-x86-64
68endif
69
70LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
71EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
72OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
73
74CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
75CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)
76
77ifeq ($(CONFIG_EFI_APP),y)
78
79PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
80LDFLAGS_FINAL += -znocombreloc -shared
81LDSCRIPT := $(LDSCRIPT_EFI)
82
83else
84
85ifeq ($(IS_32BIT),y)
86PLATFORM_CPPFLAGS += -mregparm=3
87endif
88KBUILD_LDFLAGS += --emit-relocs
89LDFLAGS_FINAL += --gc-sections $(if $(CONFIG_XPL_BUILD),,-pie)
90
91endif
92
93ifdef CONFIG_X86_64
94ifndef CONFIG_XPL_BUILD
95PLATFORM_CPPFLAGS += -D__x86_64__
96else
97PLATFORM_CPPFLAGS += -D__I386__
98endif
99else
100PLATFORM_CPPFLAGS += -D__I386__
101endif
102
103ifdef CONFIG_EFI_STUB
104
105ifdef CONFIG_EFI_STUB_64BIT
106EFI_LDS := elf_x86_64_efi.lds
107EFI_CRT0 := crt0_x86_64_efi.o
108EFI_RELOC := reloc_x86_64_efi.o
109else
110EFI_LDS := elf_ia32_efi.lds
111EFI_CRT0 := crt0_ia32_efi.o
112EFI_RELOC := reloc_ia32_efi.o
113endif
114
115else
116
117ifdef CONFIG_X86_64
118EFI_LDS := elf_x86_64_efi.lds
119EFI_CRT0 := crt0_x86_64_efi.o
120EFI_RELOC := reloc_x86_64_efi.o
121else
122EFI_LDS := elf_ia32_efi.lds
123EFI_CRT0 := crt0_ia32_efi.o
124EFI_RELOC := reloc_ia32_efi.o
125endif
126
127endif
128
129ifdef CONFIG_X86_64
130EFI_TARGET := --target=efi-app-x86_64
131else
132EFI_TARGET := --target=efi-app-ia32
133endif
134