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authorMasahiro Yamada <yamada.m@jp.panasonic.com>2014-02-05 11:28:27 +0900
committerTom Rini <trini@ti.com>2014-02-19 11:10:05 -0500
commit3284c8b8cad9452bf0711f52699bc9a5aeb83319 (patch)
tree104fa98297b97ac0ba9df772714c0cd8fc766d2e /dts
parent5ab502cb8900aee483dfba28700640672e0b060e (diff)
dts: generate multiple device tree blobs
It is convenient to have all device trees on the same SoC compiled. It allows for later easy repackaging without the need to re-run the make file. - Build device trees with the same SoC under arch/$(ARCH)/dts - Copy the one specified by CONFIG_DEFAULT_DEVICE_TREE or DEVICE_TREE=... to dts/dt.dtb Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Diffstat (limited to 'dts')
-rw-r--r--dts/Makefile31
1 files changed, 20 insertions, 11 deletions
diff --git a/dts/Makefile b/dts/Makefile
index 5d2abd9f5c3..9907463fc63 100644
--- a/dts/Makefile
+++ b/dts/Makefile
@@ -9,24 +9,30 @@
DEVICE_TREE ?= $(CONFIG_DEFAULT_DEVICE_TREE:"%"=%)
ifeq ($(DEVICE_TREE),)
-DEVICE_TREE := notfound
+DEVICE_TREE := unset
endif
-DTS := $(srctree)/arch/$(ARCH)/dts/$(DEVICE_TREE).dts
+DTB := arch/$(ARCH)/dts/$(DEVICE_TREE).dtb
-DTC_FLAGS += -R 4 -p 0x1000
+quiet_cmd_copy = COPY $@
+ cmd_copy = cp $< $@
-$(obj)/dt.dtb: $(DTS) FORCE
- $(call if_changed_dep,dtc)
+$(obj)/dt.dtb: $(DTB) FORCE
+ $(call if_changed,copy)
targets += dt.dtb
-$(DTS):
- @echo >&2
- @echo >&2 "Device Tree Source is not specified."
- @echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"
- @echo >&2 "or build with 'DEVICE_TREE=<dts-file-name>' argument"
- @/bin/false
+$(DTB): arch-dtbs
+ $(Q)test -e $@ || ( \
+ echo >&2; \
+ echo >&2 "Device Tree Source is not correctly specified."; \
+ echo >&2 "Please define 'CONFIG_DEFAULT_DEVICE_TREE'"; \
+ echo >&2 "or build with 'DEVICE_TREE=<device_tree>' argument"; \
+ echo >&2; \
+ /bin/false)
+
+arch-dtbs:
+ $(Q)$(MAKE) $(build)=arch/$(ARCH)/dts dtbs
.SECONDARY: $(obj)/dt.dtb.S
@@ -36,3 +42,6 @@ dtbs: $(obj)/dt.dtb
@:
clean-files := dt.dtb.S
+
+# Let clean descend into dts directories
+subdir- += ../arch/*/dts