image.mk: add a BuildDTB define
Add a Image/BuildDTB command that takes the path to an dts file and applies the CPP using the default include directories, then uses dtc to compile the dts as the specified output file. Additional CPP and DTC flags can be supplied as additional arguments. Signed-off-by: Jonas Gorski <jogo@openwrt.org> SVN-Revision: 46389
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@ -126,6 +126,22 @@ define Image/BuildKernel/MkFIT
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PATH=$(LINUX_DIR)/scripts/dtc:$(PATH) mkimage -f $(KDIR)/fit-$(1).its $(KDIR)/fit-$(1)$(7).itb
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endef
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# $(1) source dts file
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# $(2) target dtb file
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# $(3) extra CPP flags
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# $(4) extra DTC flags
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define Image/BuildDTB
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$(CPP) -nostdinc -x assembler-with-cpp \
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-I$(LINUX_DIR)/arch/$(ARCH)/boot/dts \
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-I$(LINUX_DIR)/arch/$(ARCH)/boot/dts/include \
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-undef -D__DTS__ $(3) \
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-o $(2).tmp $(1)
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$(LINUX_DIR)/scripts/dtc/dtc -O dtb \
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-i$(dir $(1)) $(4) \
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-o $(2) $(2).tmp
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$(RM) $(2).tmp
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endef
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define Image/mkfs/jffs2/sub
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$(STAGING_DIR_HOST)/bin/mkfs.jffs2 $(3) --pad -e $(patsubst %k,%KiB,$(1)) -o $(KDIR)/root.jffs2-$(2) -d $(TARGET_DIR) -v 2>&1 1>/dev/null | awk '/^.+$$$$/'
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$(call add_jffs2_mark,$(KDIR)/root.jffs2-$(2))
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