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dts: Add ability to build fallback DTBOs from arch/$(ARCH)/dts

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Currently the enablement of OF_UPSTREAM results on the build system
searching for DTs only in dts/upstream/ . There are platforms which
use U-Boot specific DTBOs applied on top of U-Boot control DT during
SPL stage, and source DTs for these are located in arch/$(ARCH)/dtb.

Add dedicated 'dtbos' target which builds only .dtbos and not .dtbs and
in case CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS is enabled, build
this target for arch/$(ARCH)/dtb to generate local U-Boot specific DTBOs.

Adjust top level Makefile so binman would search for .dtb and .dtbo in
both OF_UPSTREAM specific paths and arch/$(ARCH)/dtb for the .dtbo case
in case CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS is enabled.

Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2024-10-17 03:08:40 +02:00 • committed by Fabio Estevam
parent 608a31bdec
commit a55c4836f3
4 changed files with 39 additions and 1 deletions
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6
scripts/Makefile.dts
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@ -21,4 +21,10 @@ PHONY += dtbs
dtbs: $(addprefix $(obj)/, $(dtb-y))
@:
ifneq ($(CONFIG_OF_UPSTREAM_INCLUDE_LOCAL_FALLBACK_DTBOS),)
PHONY += dtbos
dtbos: $(addprefix $(obj)/, $(filter-out %.dtb,$(dtb-y)))
@:
endif
clean-files := *.dtb *.dtbo */*.dtb */*.dtbo *_HS