x86: link: Add build options for SPL

[people/ms/u-boot.git] / arch / x86 / config.mk

#
# (C) Copyright 2000-2002
# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
#
# SPDX-License-Identifier:	GPL-2.0+
#

CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000

PLATFORM_CPPFLAGS += -fno-strict-aliasing
PLATFORM_CPPFLAGS += -fomit-frame-pointer
PF_CPPFLAGS_X86   := $(call cc-option, -fno-toplevel-reorder, \
		       $(call cc-option, -fno-unit-at-a-time)) \
		     $(call cc-option, -mpreferred-stack-boundary=2)

PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
PLATFORM_CPPFLAGS += -march=i386 -m32

PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden

PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions -m elf_i386

LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3

# This is used in the top-level Makefile which does not include
# PLATFORM_LDFLAGS
LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined

OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
	-j .rel -j .rela -j .reloc

CFLAGS_NON_EFI := -mregparm=3
CFLAGS_EFI := -fpic -fshort-wchar

ifeq ($(CONFIG_EFI_STUB_64BIT),)
CFLAGS_EFI += $(call cc-option, -mno-red-zone)
EFIARCH = ia32
EFIPAYLOAD_BFDTARGET = elf32-i386
else
EFIARCH = x86_64
EFIPAYLOAD_BFDTARGET = elf64-x86-64
endif

EFIPAYLOAD_BFDARCH = i386

LDSCRIPT_EFI := $(srctree)/arch/x86/lib/elf_$(EFIARCH)_efi.lds
EFISTUB := crt0_$(EFIARCH)_efi.o reloc_$(EFIARCH)_efi.o
OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)

CPPFLAGS_REMOVE_crt0-efi-$(EFIARCH).o += $(CFLAGS_NON_EFI)
CPPFLAGS_crt0-efi-$(EFIARCH).o += $(CFLAGS_EFI)

ifeq ($(CONFIG_EFI_APP),y)

PLATFORM_CPPFLAGS += $(CFLAGS_EFI)
LDFLAGS_FINAL += -znocombreloc -shared
LDSCRIPT := $(LDSCRIPT_EFI)

else

PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
PLATFORM_LDFLAGS += --emit-relocs
LDFLAGS_FINAL += --gc-sections -pie

endif

ifneq ($(CONFIG_EFI_STUB)$(CONFIG_CMD_BOOTEFI_HELLO_COMPILE),)

ifneq ($(CONFIG_EFI_STUB_64BIT),)
EFI_LDS := elf_x86_64_efi.lds
EFI_CRT0 := crt0_x86_64_efi.o
EFI_RELOC := reloc_x86_64_efi.o
EFI_TARGET := --target=efi-app-ia32
else
EFI_LDS := elf_ia32_efi.lds
EFI_CRT0 := crt0_ia32_efi.o
EFI_RELOC := reloc_ia32_efi.o
EFI_TARGET := --target=efi-app-x86_64
endif

endif