On 5 August 2015 at 01:41, Bin Meng bmeng.cn@gmail.com wrote:
On Wed, Aug 5, 2015 at 2:33 AM, Simon Glass sjg@chromium.org wrote:
From: Ben Stoltz stoltz@google.com
Adjust the toolchain flags to build U-Boot as a relocatable shared library, as required by EFI.
Signed-off-by: Ben Stoltz stoltz@google.com Signed-off-by: Simon Glass sjg@chromium.org
Changes in v3:
- Add spaces around EFIARCH=
- Drop LDFLAGS_EFI from this patch
- Move '-m elf_i386' into the common PLATFORM_LDFLAGS
Changes in v2:
- Add a comment as to where LDFLAGS_EFI is used
- Drop duplicate OBJCOPYFLAGS_EFI
- Drop no-red-zone as it is not needed for i386
- Rename CONFIG_ARCH_EFI to CONFIG_EFI_APP
- Use toolchain instead of tool chain
arch/x86/config.mk | 30 +++++++++++++++++++++++++++--- 1 file changed, 27 insertions(+), 3 deletions(-)
diff --git a/arch/x86/config.mk b/arch/x86/config.mk index 999143e..e27f84a 100644 --- a/arch/x86/config.mk +++ b/arch/x86/config.mk @@ -8,19 +8,43 @@ CONFIG_STANDALONE_LOAD_ADDR ?= 0x40000
PLATFORM_CPPFLAGS += -fno-strict-aliasing -PLATFORM_CPPFLAGS += -mregparm=3 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 += --emit-relocs -Bsymbolic -Bsymbolic-functions -m elf_i386 +PLATFORM_LDFLAGS += -Bsymbolic -Bsymbolic-functions -m elf_i386
-LDFLAGS_FINAL += --gc-sections -pie LDFLAGS_FINAL += --wrap=__divdi3 --wrap=__udivdi3 LDFLAGS_FINAL += --wrap=__moddi3 --wrap=__umoddi3
+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
+EFIARCH = ia32
+LDSCRIPT_EFI := $(srctree)/$(CPUDIR)/efi/elf_$(EFIARCH)_efi.lds +OBJCOPYFLAGS_EFI += --target=efi-app-$(EFIARCH)
+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
Reviewed-by: Bin Meng bmeng.cn@gmail.com Tested-by: Bin Meng bmeng.cn@gmail.com
Applied to u-boot-x86.