dts, kbuild: Implement support for dtb vendor subdirs
This patch adds support of vendor sub directories for dtb files.
Subdirectories can be specified in $(dts-dirs). Kbuild traverses over
all directories while building and installing dtb files. The directory
tree is also reflected in the install path.
Tested-by: Andrew Bresticker <abrestic@chromium.org>
Signed-off-by: Robert Richter <rrichter@cavium.com>
diff --git a/arch/arm64/boot/dts/Makefile b/arch/arm64/boot/dts/Makefile
index aa28902..77130bd 100644
--- a/arch/arm64/boot/dts/Makefile
+++ b/arch/arm64/boot/dts/Makefile
@@ -3,4 +3,5 @@
dtb-$(CONFIG_ARCH_XGENE) += apm-mustang.dtb
always := $(dtb-y)
+subdir-y := $(dts-dirs)
clean-files := *.dtb
diff --git a/scripts/Makefile.dtbinst b/scripts/Makefile.dtbinst
index 54286cc..909ed7a 100644
--- a/scripts/Makefile.dtbinst
+++ b/scripts/Makefile.dtbinst
@@ -6,6 +6,7 @@
#
# $INSTALL_PATH/dtbs/$KERNELRELEASE
#
+# Traverse through subdirectories listed in $(dts-dirs).
# ==========================================================================
src := $(obj)
@@ -13,26 +14,38 @@
PHONY := __dtbs_install
__dtbs_install:
+export dtbinst-root ?= $(obj)
+
include include/config/auto.conf
include scripts/Kbuild.include
include $(srctree)/$(obj)/Makefile
PHONY += __dtbs_install_prep
__dtbs_install_prep:
+ifeq ("$(dtbinst-root)", "$(obj)")
$(Q)if [ -d $(INSTALL_DTBS_PATH).old ]; then rm -rf $(INSTALL_DTBS_PATH).old; fi
$(Q)if [ -d $(INSTALL_DTBS_PATH) ]; then mv $(INSTALL_DTBS_PATH) $(INSTALL_DTBS_PATH).old; fi
$(Q)mkdir -p $(INSTALL_DTBS_PATH)
+endif
dtbinst-files := $(dtb-y)
+dtbinst-dirs := $(dts-dirs)
# Helper targets for Installing DTBs into the boot directory
quiet_cmd_dtb_install = INSTALL $<
- cmd_dtb_install = cp $< $(2)
+ cmd_dtb_install = mkdir -p $(2); cp $< $(2)
-$(dtbinst-files): %.dtb: $(obj)/%.dtb | __dtbs_install_prep
- $(call cmd,dtb_install,$(INSTALL_DTBS_PATH))
+install-dir = $(patsubst $(dtbinst-root)%,$(INSTALL_DTBS_PATH)%,$(obj))
-PHONY += $(dtbinst-files)
-__dtbs_install: $(dtbinst-files)
+$(dtbinst-files) $(dtbinst-dirs): | __dtbs_install_prep
+
+$(dtbinst-files): %.dtb: $(obj)/%.dtb
+ $(call cmd,dtb_install,$(install-dir))
+
+$(dtbinst-dirs):
+ $(Q)$(MAKE) $(dtbinst)=$(obj)/$@
+
+PHONY += $(dtbinst-files) $(dtbinst-dirs)
+__dtbs_install: $(dtbinst-files) $(dtbinst-dirs)
.PHONY: $(PHONY)