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diff --git a/qemu/dtc/tests/dtbs_equal_ordered.c b/qemu/dtc/tests/dtbs_equal_ordered.c
new file mode 100644
index 000000000..12495dea4
--- /dev/null
+++ b/qemu/dtc/tests/dtbs_equal_ordered.c
@@ -0,0 +1,173 @@
+/*
+ * libfdt - Flat Device Tree manipulation
+ *	Tests if two given dtbs are structurally equal (including order)
+ * Copyright (C) 2007 David Gibson, IBM Corporation.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdint.h>
+
+#include <libfdt.h>
+
+#include "tests.h"
+#include "testdata.h"
+
+int notequal; /* = 0 */
+
+#define MISMATCH(fmt, ...)			\
+	do { \
+		if (notequal) \
+			PASS(); \
+		else \
+			FAIL(fmt, ##__VA_ARGS__);	\
+	} while (0)
+
+#define MATCH()			\
+	do { \
+		if (!notequal) \
+			PASS(); \
+		else \
+			FAIL("Trees match which shouldn't");	\
+	} while (0)
+
+#define CHECK(code) \
+	{ \
+		err = (code); \
+		if (err) \
+			FAIL(#code ": %s", fdt_strerror(err)); \
+	}
+
+static void compare_mem_rsv(const void *fdt1, const void *fdt2)
+{
+	int i;
+	uint64_t addr1, size1, addr2, size2;
+	int err;
+
+	if (fdt_num_mem_rsv(fdt1) != fdt_num_mem_rsv(fdt2))
+		MISMATCH("Trees have different number of reserve entries");
+	for (i = 0; i < fdt_num_mem_rsv(fdt1); i++) {
+		CHECK(fdt_get_mem_rsv(fdt1, i, &addr1, &size1));
+		CHECK(fdt_get_mem_rsv(fdt2, i, &addr2, &size2));
+
+		if ((addr1 != addr2) || (size1 != size2))
+			MISMATCH("Mismatch in reserve entry %d: "
+				 "(0x%llx, 0x%llx) != (0x%llx, 0x%llx)", i,
+				 (unsigned long long)addr1,
+				 (unsigned long long)size1,
+				 (unsigned long long)addr2,
+				 (unsigned long long)size2);
+	}
+}
+
+static void compare_structure(const void *fdt1, const void *fdt2)
+{
+	int nextoffset1 = 0, nextoffset2 = 0;
+	int offset1, offset2;
+	uint32_t tag1, tag2;
+	const char *name1, *name2;
+	int err;
+	const struct fdt_property *prop1, *prop2;
+	int len1, len2;
+
+	while (1) {
+		do {
+			offset1 = nextoffset1;
+			tag1 = fdt_next_tag(fdt1, offset1, &nextoffset1);
+		} while (tag1 == FDT_NOP);
+		do {
+			offset2 = nextoffset2;
+			tag2 = fdt_next_tag(fdt2, offset2, &nextoffset2);
+		} while (tag2 == FDT_NOP);
+
+		if (tag1 != tag2)
+			MISMATCH("Tag mismatch (%d != %d) at (%d, %d)",
+			     tag1, tag2, offset1, offset2);
+
+		switch (tag1) {
+		case FDT_BEGIN_NODE:
+			name1 = fdt_get_name(fdt1, offset1, &err);
+			if (!name1)
+				FAIL("fdt_get_name(fdt1, %d, ..): %s",
+				     offset1, fdt_strerror(err));
+			name2 = fdt_get_name(fdt2, offset2, NULL);
+			if (!name2)
+				FAIL("fdt_get_name(fdt2, %d, ..): %s",
+				     offset2, fdt_strerror(err));
+
+			if (!streq(name1, name2))
+			    MISMATCH("Name mismatch (\"%s\" != \"%s\") at (%d, %d)",
+				     name1, name2, offset1, offset2);
+			break;
+
+		case FDT_PROP:
+			prop1 = fdt_offset_ptr(fdt1, offset1, sizeof(*prop1));
+			if (!prop1)
+				FAIL("Could get fdt1 property at %d", offset1);
+			prop2 = fdt_offset_ptr(fdt2, offset2, sizeof(*prop2));
+			if (!prop2)
+				FAIL("Could get fdt2 property at %d", offset2);
+
+			name1 = fdt_string(fdt1, fdt32_to_cpu(prop1->nameoff));
+			name2 = fdt_string(fdt2, fdt32_to_cpu(prop2->nameoff));
+			if (!streq(name1, name2))
+				MISMATCH("Property name mismatch \"%s\" != \"%s\" "
+					 "at (%d, %d)", name1, name2, offset1, offset2);
+			len1 = fdt32_to_cpu(prop1->len);
+			len2 = fdt32_to_cpu(prop2->len);
+			if (len1 != len2)
+				MISMATCH("Property length mismatch %u != %u "
+					 "at (%d, %d)", len1, len2, offset1, offset2);
+
+			if (memcmp(prop1->data, prop2->data, len1) != 0)
+				MISMATCH("Property value mismatch at (%d, %d)",
+					 offset1, offset2);
+			break;
+
+		case FDT_END:
+			return;
+		}
+	}
+}
+
+int main(int argc, char *argv[])
+{
+	void *fdt1, *fdt2;
+	uint32_t cpuid1, cpuid2;
+
+	test_init(argc, argv);
+	if ((argc != 3)
+	    && ((argc != 4) || !streq(argv[1], "-n")))
+		CONFIG("Usage: %s [-n] <dtb file> <dtb file>", argv[0]);
+	if (argc == 4)
+		notequal = 1;
+
+	fdt1 = load_blob(argv[argc-2]);
+	fdt2 = load_blob(argv[argc-1]);
+
+	compare_mem_rsv(fdt1, fdt2);
+	compare_structure(fdt1, fdt2);
+
+	cpuid1 = fdt_boot_cpuid_phys(fdt1);
+	cpuid2 = fdt_boot_cpuid_phys(fdt2);
+	if (cpuid1 != cpuid2)
+		MISMATCH("boot_cpuid_phys mismatch 0x%x != 0x%x",
+			 cpuid1, cpuid2);
+
+	MATCH();
+}