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x86: Support building the EFI stub
Add support for building a 32/64-bit EFI stub for x86. This involves building the startup and relocation code for either i386 or x86_64. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
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@ -34,7 +34,7 @@ obj-$(CONFIG_SYS_X86_TSC_TIMER) += tsc_timer.o
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obj-$(CONFIG_CMD_ZBOOT) += zimage.o
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obj-$(CONFIG_CMD_ZBOOT) += zimage.o
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obj-$(CONFIG_HAVE_FSP) += fsp/
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obj-$(CONFIG_HAVE_FSP) += fsp/
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extra-$(CONFIG_USE_PRIVATE_LIBGCC) := lib.a
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extra-$(CONFIG_USE_PRIVATE_LIBGCC) += lib.a
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NORMAL_LIBGCC = $(shell $(CC) $(PLATFORM_CPPFLAGS) -print-libgcc-file-name)
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NORMAL_LIBGCC = $(shell $(CC) $(PLATFORM_CPPFLAGS) -print-libgcc-file-name)
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OBJCOPYFLAGS := --prefix-symbols=__normal_
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OBJCOPYFLAGS := --prefix-symbols=__normal_
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24
arch/x86/lib/efi/Makefile
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24
arch/x86/lib/efi/Makefile
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@ -0,0 +1,24 @@
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#
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# (C) Copyright 2002-2006
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# Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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#
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# SPDX-License-Identifier: GPL-2.0+
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#
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obj-$(CONFIG_EFI_APP) += crt0-efi-ia32.o reloc_ia32.o
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ifneq ($(CONFIG_EFI_STUB),)
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CFLAGS_REMOVE_reloc_ia32.o += -mregparm=3
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CFLAGS_reloc_ia32.o += -fpic -fshort-wchar
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# When building for 64-bit we must remove the i386-specific flags
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CFLAGS_REMOVE_reloc_x86_64.o += -mregparm=3 -march=i386 -m32
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CFLAGS_reloc_x86_64.o += -fpic -fshort-wchar
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AFLAGS_REMOVE_crt0-efi-x86_64.o += -mregparm=3 -march=i386 -m32
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AFLAGS_crt0-efi-x86_64.o += -fpic -fshort-wchar
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extra-$(CONFIG_EFI_STUB_32BIT) += crt0-efi-ia32.o reloc_ia32.o
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extra-$(CONFIG_EFI_STUB_64BIT) += crt0-efi-x86_64.o reloc_x86_64.o
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endif
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