scripts: install dtbo files to kernel packages

Signed-off-by: Stephen Chen <stephen@radxa.com>

arch/arm/boot/.gitignore

@@ -4,3 +4,5 @@ zImage
 xipImage
 bootpImage
 uImage
+*.dtb*
+*.scr

arch/arm64/boot/.gitignore

@@ -1,3 +1,5 @@
 # SPDX-License-Identifier: GPL-2.0-only
 Image
 Image.gz
+*.dtb*
+*.scr

scripts/Makefile.dtbinst

@@ -18,9 +18,11 @@ include scripts/Kbuild.include
 include $(src)/Makefile
 
 dtbs    := $(addprefix $(dst)/, $(dtb-y) $(if $(CONFIG_OF_ALL_DTBS),$(dtb-)))
+dtbos   := $(addprefix $(dst)/, $(dtbo-y))
+readmes := $(addprefix $(dst)/, $(dtbotxt-y))
 subdirs := $(addprefix $(obj)/, $(subdir-y) $(subdir-m))
 
-__dtbs_install: $(dtbs) $(subdirs)
+__dtbs_install: $(dtbs) $(dtbos) $(readmes) $(subdirs)
 	@:
 
 quiet_cmd_dtb_install = INSTALL $@
@@ -32,6 +34,9 @@ $(dst)/%.dtb: $(obj)/%.dtb
 $(dst)/%.dtbo: $(obj)/%.dtbo
 	$(call cmd,dtb_install)
 
+$(dst)/README.rockchip-overlays: $(src)/README.rockchip-overlays
+	$(call cmd,dtb_install)
+
 PHONY += $(subdirs)
 $(subdirs):
 	$(Q)$(MAKE) $(dtbinst)=$@ dst=$(patsubst $(obj)/%,$(dst)/%,$@)

scripts/Makefile.lib

@@ -334,6 +334,9 @@ ifeq ($(CONFIG_DTC_OMIT_EMPTY),y)
 DTC_FLAGS += -Wnode_empty
 endif
 
+# Overlay support
+DTC_FLAGS += -@ -Wno-unit_address_format -Wno-simple_bus_reg
+
 # Disable noisy checks by default
 ifeq ($(findstring 1,$(KBUILD_EXTRA_WARN)),)
 DTC_FLAGS += $(call dtc-option,-Wno-unit_address_vs_reg) \
@@ -401,6 +404,17 @@ endef
 $(obj)/%.dt.yaml: $(src)/%.dts $(DTC) $(DT_TMP_SCHEMA) FORCE
 	$(call if_changed_rule,dtc,yaml)
 
+quiet_cmd_dtco = DTCO    $@
+cmd_dtco = mkdir -p $(dir ${dtc-tmp}) ; \
+	$(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+	$(DTC) -O dtb -o $@ -b 0 \
+		-i $(dir $<) $(DTC_FLAGS) \
+		-d $(depfile).dtc.tmp $(dtc-tmp) ; \
+	cat $(depfile).pre.tmp $(depfile).dtc.tmp > $(depfile)
+
+$(obj)/%.dtbo: $(src)/%.dts FORCE
+	$(call if_changed_dep,dtco)
+
 dtc-tmp = $(subst $(comma),_,$(dot-target).dts.tmp)
 
 # Bzip2