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x86: Tidy up selection of building the EFI stub 

At present we use a CONFIG option in efi.h to determine whether we are
building the EFI stub or not. This means that the same header cannot be
used for EFI_LOADER support. The CONFIG option will be enabled for the
whole build, even when not building the stub.

Use a different define instead, set up just for the files that make up the
stub.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Simon Glass 2016-11-07 08:47:06 -07:00 committed by Alexander Graf
parent 5ee31baf81
commit 5abd9137d5
2 changed files with 7 additions and 4 deletions
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7
include/efi.h
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@ -30,8 +30,11 @@ struct efi_device_path;
#define EFI_BITS_PER_LONG BITS_PER_LONG
/* With 64-bit EFI stub, EFI_BITS_PER_LONG has to be 64 */
#ifdef CONFIG_EFI_STUB_64BIT
/*
* With 64-bit EFI stub, EFI_BITS_PER_LONG has to be 64. EFI_STUB is set
* in lib/efi/Makefile, when building the stub.
*/
#if defined(CONFIG_EFI_STUB_64BIT) && defined(EFI_STUB)
#undef EFI_BITS_PER_LONG
#define EFI_BITS_PER_LONG 64
#endif

4
lib/efi/Makefile
View File

@ -9,9 +9,9 @@ obj-$(CONFIG_EFI_STUB) += efi_info.o
CFLAGS_REMOVE_efi_stub.o := -mregparm=3 \
$(if $(CONFIG_EFI_STUB_64BIT),-march=i386 -m32)
CFLAGS_efi_stub.o := -fpic -fshort-wchar
CFLAGS_efi_stub.o := -fpic -fshort-wchar -DEFI_STUB
CFLAGS_REMOVE_efi.o := -mregparm=3 \
$(if $(CONFIG_EFI_STUB_64BIT),-march=i386 -m32)
CFLAGS_efi.o := -fpic -fshort-wchar
CFLAGS_efi.o := -fpic -fshort-wchar -DEFI_STUB
extra-$(CONFIG_EFI_STUB) += efi_stub.o efi.o