1 files changed, 14 insertions, 0 deletions

diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index bdf42fdf64c9..07125e697d7a 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -156,6 +156,11 @@ cpp_flags      = -Wp,-MD,$(depfile) $(NOSTDINC_FLAGS) $(LINUXINCLUDE)     \
 
 ld_flags       = $(LDFLAGS) $(ldflags-y)
 
+dtc_cpp_flags  = -Wp,-MD,$(depfile) -nostdinc                            \
+                 -I$(srctree)/arch/$(SRCARCH)/boot/dts                   \
+                 -I$(srctree)/arch/$(SRCARCH)/include/dts                \
+                 -undef -D__DTS__
+
 # Finds the multi-part object the current object will be linked into
 modname-multi = $(sort $(foreach m,$(multi-used),\
                 $(if $(filter $(subst $(obj)/,,$*.o), $($(m:.o=-objs)) $($(m:.o=-y))),$(m:.o=))))
@@ -269,6 +274,15 @@ cmd_dtc = $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) -d $(depfile
 $(obj)/%.dtb: $(src)/%.dts FORCE
         $(call if_changed_dep,dtc)
 
+dtc-tmp = $(subst $(comma),_,$(dot-target).dts)
+
+quiet_cmd_dtc_cpp = DTC+CPP $@
+cmd_dtc_cpp = $(CPP) $(dtc_cpp_flags) -x assembler-with-cpp -o $(dtc-tmp) $< ; \
+        $(objtree)/scripts/dtc/dtc -O dtb -o $@ -b 0 $(DTC_FLAGS) $(dtc-tmp)
+
+$(obj)/%.dtb: $(src)/%.dtsp FORCE
+        $(call if_changed_dep,dtc_cpp)
+
 # Bzip2
 # ---------------------------------------------------------------------------