mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-11 07:34:31 +00:00
aa7839b39c
This patch removes the inclusion of the libgcc math functions and replaces them by functions coded in C, taken from the coreboot project. This makes U-Boot building more independent from the toolchain installed / available on the build system. The code taken from coreboot is authored from Vadim Bendebury <vbendeb@chromium.org> on 2014-11-28 and committed with commit ID e63990ef [libpayload: provide basic 64bit division implementation] (coreboot git repository located here [1]). I modified the code so that its checkpatch clean without any functional changes. [1] git://github.com/coreboot/coreboot.git Signed-off-by: Stefan Roese <sr@denx.de> Cc: Simon Glass <sjg@chromium.org> Cc: Bin Meng <bmeng.cn@gmail.com> Reviewed-by: Bin Meng <bmeng.cn@gmail.com> Tested-by: Bin Meng <bmeng.cn@gmail.com>
105 lines
2.5 KiB
Makefile
105 lines
2.5 KiB
Makefile
#
|
|
# (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))
|
|
|
|
PLATFORM_CPPFLAGS += $(PF_CPPFLAGS_X86)
|
|
PLATFORM_CPPFLAGS += -fno-dwarf2-cfi-asm
|
|
|
|
ifdef CONFIG_SPL_BUILD
|
|
IS_32BIT := y
|
|
else
|
|
ifndef CONFIG_X86_64
|
|
IS_32BIT := y
|
|
endif
|
|
endif
|
|
|
|
ifeq ($(IS_32BIT),y)
|
|
PLATFORM_CPPFLAGS += -march=i386 -m32
|
|
else
|
|
PLATFORM_CPPFLAGS += $(if $(CONFIG_SPL_BUILD),,-fpic) -fno-common -m64
|
|
endif
|
|
|
|
PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
|
|
|
|
PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions
|
|
PLATFORM_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
|
|
|
|
# This is used in the top-level Makefile which does not include
|
|
# PLATFORM_LDFLAGS
|
|
LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
|
|
|
|
OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
|
|
-j .rel -j .rela -j .reloc
|
|
|
|
ifeq ($(IS_32BIT),y)
|
|
CFLAGS_NON_EFI := -mregparm=3
|
|
endif
|
|
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 $(if $(CONFIG_SPL_BUILD),,-pie)
|
|
|
|
endif
|
|
|
|
ifdef CONFIG_X86_64
|
|
ifndef CONFIG_SPL_BUILD
|
|
PLATFORM_CPPFLAGS += -D__x86_64__
|
|
else
|
|
PLATFORM_CPPFLAGS += -D__I386__
|
|
endif
|
|
else
|
|
PLATFORM_CPPFLAGS += -D__I386__
|
|
endif
|
|
|
|
ifneq ($(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
|