diff --git a/Makefile b/Makefile
index f049217..a81b502 100644
--- a/Makefile
+++ b/Makefile
@@ -180,3 +180,5 @@ qemu-gdb: $K/kernel .gdbinit fs.img
 	@echo "*** Now run 'gdb' in another window." 1>&2
 	$(QEMU) $(QEMUOPTS) -S $(QEMUGDB)
 
+qemu-dump-dtb: $K/kernel fs.img
+	$(QEMU) $(QEMUOPTS) -machine dumpdtb=qemu.dtb