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x86: Update compile/link flags to support 64-bit U-Boot

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Update config.mk settings to support both 32-bit and 64-bit U-Boot.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Simon Glass 2017-01-16 07:04:26 -07:00 committed by Bin Meng
parent c17c422854
commit 3a03703afc
2 changed files with 28 additions and 4 deletions
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30
arch/x86/config.mk
View File

@ -15,11 +15,25 @@ PF_CPPFLAGS_X86 := $(call cc-option, -fno-toplevel-reorder, \
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
endif
PLATFORM_RELFLAGS += -ffunction-sections -fvisibility=hidden
PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions -m elf_i386
PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions
PLATFORM_LDFLAGS += -m $(if $(IS_32BIT),elf_i386,elf_x86_64)
LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3
LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
@ -31,7 +45,9 @@ LDFLAGS_EFI_PAYLOAD := -Bsymbolic -Bsymbolic-functions -shared --no-undefined
OBJCOPYFLAGS_EFI := -j .text -j .sdata -j .data -j .dynamic -j .dynsym \
-j .rel -j .rela -j .reloc
ifeq ($(IS_32BIT),y)
CFLAGS_NON_EFI := -mregparm=3
endif
CFLAGS_EFI := -fpic -fshort-wchar
ifeq ($(CONFIG_EFI_STUB_64BIT),)
@ -62,10 +78,20 @@ else
PLATFORM_CPPFLAGS += $(CFLAGS_NON_EFI)
PLATFORM_LDFLAGS += --emit-relocs
LDFLAGS_FINAL += --gc-sections -pie
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),)

2
arch/x86/cpu/config.mk
View File

@ -7,8 +7,6 @@
CROSS_COMPILE ?= i386-linux-
PLATFORM_CPPFLAGS += -D__I386__
# DO NOT MODIFY THE FOLLOWING UNLESS YOU REALLY KNOW WHAT YOU ARE DOING!
LDPPFLAGS += -DRESET_SEG_START=$(CONFIG_RESET_SEG_START)
LDPPFLAGS += -DRESET_SEG_SIZE=$(CONFIG_RESET_SEG_SIZE)