Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
kbuild: create a list of all built DTB files
It is useful to have a list of all *.dtb and *.dtbo files generated
from the current build.
With this commit, 'make dtbs' creates arch/*/boot/dts/dtbs-list, which
lists the dtb(o) files created in the current build. It maintains the
order of the dtb-y additions in Makefiles although the order is not
important for DTBs. It is a (good) side effect through the reuse of the
modules.order rule.
Please note this list only includes the files directly added to dtb-y.
For example, consider this case:
foo-dtbs := foo_base.dtb foo_overlay.dtbo
dtb-y := foo.dtb
In this example, the list will include foo.dtb, but not foo_base.dtb
or foo_overlay.dtbo.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
+21
-10
+1
.gitignore
+1
.gitignore
+2
-2
Makefile
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-2
Makefile
···
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PHONY += dtbs dtbs_prepare dtbs_install dtbs_check
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dtbs: dtbs_prepare
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$(Q)$(MAKE) $(build)=$(dtstree)
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$(Q)$(MAKE) $(build)=$(dtstree) need-dtbslist=1
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# include/config/kernel.release is actually needed when installing DTBs because
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# INSTALL_DTBS_PATH contains $(KERNELRELEASE). However, we do not want to make
···
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-o -name '*.ko.*' \
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-o -name '*.dtb' -o -name '*.dtbo' \
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-o -name '*.dtb.S' -o -name '*.dtbo.S' \
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-
-o -name '*.dt.yaml' \
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-o -name '*.dt.yaml' -o -name 'dtbs-list' \
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-o -name '*.dwo' -o -name '*.lst' \
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-o -name '*.su' -o -name '*.mod' \
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-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \
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-8
scripts/Makefile.build
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-8
scripts/Makefile.build
···
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# subdir-builtin and subdir-modorder may contain duplications. Use $(sort ...)
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subdir-builtin := $(sort $(filter %/built-in.a, $(real-obj-y)))
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subdir-modorder := $(sort $(filter %/modules.order, $(obj-m)))
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subdir-dtbslist := $(sort $(filter %/dtbs-list, $(dtb-y)))
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targets-for-builtin := $(extra-y)
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···
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# To build objects in subdirs, we need to descend into the directories
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$(subdir-builtin): $(obj)/%/built-in.a: $(obj)/% ;
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$(subdir-modorder): $(obj)/%/modules.order: $(obj)/% ;
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$(subdir-dtbslist): $(obj)/%/dtbs-list: $(obj)/% ;
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#
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# Rule to compile a set of .o files into one .a file (without symbol table)
···
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$(call if_changed,ar_builtin)
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#
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# Rule to create modules.order file
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# Rule to create modules.order and dtbs-list
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#
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# Create commands to either record .ko file or cat modules.order from
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# a subdirectory
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# Add $(obj-m) as the prerequisite to avoid updating the timestamp of
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# modules.order unless contained modules are updated.
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# This is a list of build artifacts (module or dtb) from the current Makefile
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# and its sub-directories. The timestamp should be updated when any of the
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# member files.
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cmd_modules_order = { $(foreach m, $(real-prereqs), \
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$(if $(filter %/modules.order, $m), cat $m, echo $m);) :; } \
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cmd_gen_order = { $(foreach m, $(real-prereqs), \
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$(if $(filter %/$(notdir $@), $m), cat $m, echo $m);) :; } \
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> $@
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$(obj)/modules.order: $(obj-m) FORCE
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$(call if_changed,modules_order)
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$(call if_changed,gen_order)
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$(obj)/dtbs-list: $(dtb-y) FORCE
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$(call if_changed,gen_order)
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#
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# Rule to compile a set of .o files into one .a file (with symbol table)
+6
scripts/Makefile.lib
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scripts/Makefile.lib
···
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obj-y := $(filter-out %/, $(obj-y))
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endif
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ifdef need-dtbslist
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dtb-y += $(addsuffix /dtbs-list, $(subdir-ym))
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always-y += dtbs-list
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endif
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# Expand $(foo-objs) $(foo-y) etc. by replacing their individuals
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suffix-search = $(strip $(foreach s, $3, $($(1:%$(strip $2)=%$s))))
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# List composite targets that are constructed by combining other targets
···
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real-obj-y := $(addprefix $(obj)/,$(real-obj-y))
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real-obj-m := $(addprefix $(obj)/,$(real-obj-m))
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multi-obj-m := $(addprefix $(obj)/, $(multi-obj-m))
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dtb-y := $(addprefix $(obj)/, $(dtb-y))
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multi-dtb-y := $(addprefix $(obj)/, $(multi-dtb-y))
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real-dtb-y := $(addprefix $(obj)/, $(real-dtb-y))
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subdir-ym := $(addprefix $(obj)/,$(subdir-ym))