xtensa: enable building of all dtbs

Enable building all dtb files when CONFIG_OF_ALL_DTBS is enabled. The dtbs
are not really dependent on a platform being enabled or any other kernel
config, so for testing coverage it is convenient to build all of the dtbs.
This builds all dts files in the tree, not just targets listed.

Signed-off-by: Rob Herring <robh@kernel.org>
Cc: Chris Zankel <chris@zankel.net>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: linux-xtensa@linux-xtensa.org

diff --git a/arch/xtensa/Makefile b/arch/xtensa/Makefile
index f9e6a068aafd3ca3c296a9bee832dbd74bdb99ab..709b5748a2d7ed44aeacf7d378cc99b4e37c0939 100644 (file)
--- a/arch/xtensa/Makefile
+++ b/arch/xtensa/Makefile
@@ -101,6 +101,10 @@ zImage: vmlinux
 %.dtb:
        $(Q)$(MAKE) $(build)=$(boot)/dts $(boot)/dts/$@
 
+dtbs: scripts
+       $(Q)$(MAKE) $(build)=$(boot)/dts
+
 define archhelp
   @echo '* zImage      - Compressed kernel image (arch/xtensa/boot/images/zImage.*)'
+  @echo '  dtbs        - Build device tree blobs for enabled boards'
 endef

diff --git a/arch/xtensa/boot/dts/Makefile b/arch/xtensa/boot/dts/Makefile
index 5f711bba830790c49d54c9fd926f0bf128dae01f..a15e241c9153c4791fe89977e03775c824e3acc1 100644 (file)
--- a/arch/xtensa/boot/dts/Makefile
+++ b/arch/xtensa/boot/dts/Makefile
@@ -12,4 +12,9 @@ ifneq ($(CONFIG_BUILTIN_DTB),"")
 obj-$(CONFIG_OF) += $(BUILTIN_DTB)
 endif
 
-clean-files := *.dtb.S
+dtstree := $(srctree)/$(src)
+dtb-$(CONFIG_OF_ALL_DTBS) := $(patsubst $(dtstree)/%.dts,%.dtb, $(wildcard $(dtstree)/*.dts))
+
+always += $(dtb-y)
+clean-files += *.dtb *.dtb.S
+