1 files changed, 59 insertions, 0 deletions
diff --git a/test/dm/fdtdec.c b/test/dm/fdtdec.c
new file mode 100644
index 0000000000..b2f75b5843
--- /dev/null
+++ b/test/dm/fdtdec.c
@@ -0,0 +1,59 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2020 NXP
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <dm/of_extra.h>
+#include <dm/test.h>
+#include <test/ut.h>
+
+static int dm_test_fdtdec_set_carveout(struct unit_test_state *uts)
+{
+	struct fdt_memory resv;
+	void *blob;
+	const fdt32_t *prop;
+	int blob_sz, len, offset;
+
+	blob_sz = fdt_totalsize(gd->fdt_blob) + 4096;
+	blob = malloc(blob_sz);
+	ut_assertnonnull(blob);
+
+	/* Make a writtable copy of the fdt blob */
+	ut_assertok(fdt_open_into(gd->fdt_blob, blob, blob_sz));
+
+	resv.start = 0x1000;
+	resv.end = 0x2000;
+	ut_assertok(fdtdec_set_carveout(blob, "/a-test",
+					"memory-region", 2, "test_resv1",
+					&resv));
+
+	resv.start = 0x10000;
+	resv.end = 0x20000;
+	ut_assertok(fdtdec_set_carveout(blob, "/a-test",
+					"memory-region", 1, "test_resv2",
+					&resv));
+
+	resv.start = 0x100000;
+	resv.end = 0x200000;
+	ut_assertok(fdtdec_set_carveout(blob, "/a-test",
+					"memory-region", 0, "test_resv3",
+					&resv));
+
+	offset = fdt_path_offset(blob, "/a-test");
+	ut_assert(offset > 0);
+	prop = fdt_getprop(blob, offset, "memory-region", &len);
+	ut_assertnonnull(prop);
+
+	ut_asserteq(len, 12);
+	ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[0])) > 0);
+	ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[1])) > 0);
+	ut_assert(fdt_node_offset_by_phandle(blob, fdt32_to_cpu(prop[2])) > 0);
+
+	free(blob);
+
+	return 0;
+}
+DM_TEST(dm_test_fdtdec_set_carveout,
+	DM_TESTF_SCAN_PDATA | DM_TESTF_SCAN_FDT | DM_TESTF_FLAT_TREE);