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09297182ad
The generated .S files for fonts and splash screens use .incbin with the full prerequisite path. When building with O= this bakes an absolute path into the .S file. If the build directory is later used on a different machine (e.g. in a container), the assembler cannot find the source file. Follow the existing DTB convention: rename the object targets to use compound suffixes (.ttf.o, .bmp.o), switch the pattern rules from direct $(call cmd,...) to FORCE + $(call if_changed,...), and register the new suffixes with intermediate_targets so that kbuild loads their .cmd files. This lets if_changed detect when the recorded command (including source paths) has changed and regenerate the .S file automatically. The EFI rule is left unchanged since its prerequisite is a generated file in the build directory, like the DTB and DTBO rules. The intermediate_targets entries stay in scripts/Makefile.build rather than moving to scripts/Makefile.lib-u-boot, because that file is included before intermediate_targets is defined and 'targets' is ':=', so a '$(call intermediate_targets, ...)' inside it would expand to empty and silently drop the entries. To keep the upstream block untouched, the U-Boot additions go in a separate 'targets +=' block immediately below. Suggested-by: Rasmus Villemoes <ravi@prevas.dk> Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Rasmus Villemoes <ravi@prevas.dk>
97 lines
2.9 KiB
Makefile
97 lines
2.9 KiB
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# U-Boot-specific rules for embedding binary data via .incbin
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# These are split out of Makefile.lib to simplify kbuild re-syncs.
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# Fonts
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# ---------------------------------------------------------------------------
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# Generate an assembly file to wrap the font data
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quiet_cmd_S_ttf= TTF $@
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cmd_S_ttf= \
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( \
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echo '.section .rodata.ttf.init,"a"'; \
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echo '.balign 16'; \
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echo '.global __ttf_$(*F)_begin'; \
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echo '__ttf_$(*F)_begin:'; \
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echo '.incbin "$<" '; \
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echo '__ttf_$(*F)_end:'; \
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echo '.global __ttf_$(*F)_end'; \
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echo '.balign 16'; \
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) > $@
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$(obj)/%.ttf.S: $(src)/%.ttf FORCE
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$(call if_changed,S_ttf)
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# Splash logos
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# ---------------------------------------------------------------------------
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# Generate an assembly file to wrap the splash data
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quiet_cmd_S_splash= TTF $@
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cmd_S_splash= \
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( \
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echo '.section .rodata.splash.init,"a"'; \
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echo '.balign 16'; \
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echo '.global __splash_$(*F)_begin'; \
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echo '__splash_$(*F)_begin:'; \
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echo '.incbin "$<" '; \
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echo '__splash_$(*F)_end:'; \
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echo '.global __splash_$(*F)_end'; \
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echo '.balign 16'; \
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) > $@
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$(obj)/%.bmp.S: $(src)/%.bmp FORCE
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$(call if_changed,S_splash)
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# EFI applications
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# A Makefile target *.efi is built as EFI application.
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# A Makefile target *_efi.S wraps *.efi as built-in EFI application.
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# ---------------------------------------------------------------------------
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# Generate an assembly file to wrap the EFI app
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cmd_S_efi= \
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( \
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echo '.section .rodata.$*.init,"a"'; \
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echo '.balign 16'; \
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echo '.global __efi_$*_begin'; \
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echo '__efi_$*_begin:'; \
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echo '.incbin "$<" '; \
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echo '__efi_$*_end:'; \
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echo '.global __efi_$*_end'; \
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echo '.balign 16'; \
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) > $@
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$(obj)/%_efi.S: $(obj)/%.efi
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$(call cmd,S_efi)
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quiet_cmd_efi_objcopy = OBJCOPY $@
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cmd_efi_objcopy = $(OBJCOPY) -j .header -j .text -j .sdata -j .data \
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-j .dynamic -j .dynstr -j .dynsym -j .rel* -j .reloc \
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$(if $(EFI_TARGET),$(EFI_TARGET),-O binary) $^ $@
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$(obj)/%.efi: $(obj)/%_efi.so
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$(call cmd,efi_objcopy)
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KBUILD_EFILDFLAGS = -nostdlib -zexecstack -znocombreloc -znorelro
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KBUILD_EFILDFLAGS += $(call ld-option,--no-warn-rwx-segments)
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quiet_cmd_efi_ld = LD $@
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cmd_efi_ld = $(LD) $(KBUILD_EFILDFLAGS) -L $(srctree) -T $(EFI_LDS_PATH) \
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-shared -Bsymbolic -s $^ $(PLATFORM_LIBGCC) -o $@
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EFI_LDS_PATH = arch/$(ARCH)/lib/$(EFI_LDS)
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$(obj)/efi_crt0.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_CRT0:.o=.S) FORCE
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$(call if_changed_dep,as_o_S)
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$(obj)/efi_reloc.o: $(srctree)/arch/$(ARCH)/lib/$(EFI_RELOC:.o=.c) $(recordmcount_source) FORCE
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$(call cmd,force_checksrc)
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$(call if_changed_rule,cc_o_c)
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$(obj)/%_efi.so: $(obj)/%.o $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
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$(call cmd,efi_ld)
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targets += $(obj)/efi_crt0.o $(obj)/efi_reloc.o $(obj)/efi_freestanding.o
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CFLAGS_REMOVE_efi_reloc.o := $(LTO_CFLAGS)
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CFLAGS_REMOVE_efi_freestanding.o := $(LTO_CFLAGS)
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