diff --git a/boot/fdt_support.c b/boot/fdt_support.c
index 2bd80a9dfb1..b1b2679dea0 100644
--- a/boot/fdt_support.c
+++ b/boot/fdt_support.c
@@ -7,12 +7,15 @@
  */
 
 #include <common.h>
+#include <dm.h>
 #include <abuf.h>
 #include <env.h>
 #include <log.h>
 #include <mapmem.h>
 #include <net.h>
+#include <rng.h>
 #include <stdio_dev.h>
+#include <dm/device_compat.h>
 #include <dm/ofnode.h>
 #include <linux/ctype.h>
 #include <linux/types.h>
@@ -274,6 +277,47 @@ int fdt_initrd(void *fdt, ulong initrd_start, ulong initrd_end)
 	return 0;
 }
 
+int fdt_kaslrseed(void *fdt, bool overwrite)
+{
+	int len, err, nodeoffset;
+	struct udevice *dev;
+	const u64 *orig;
+	u64 data = 0;
+
+	err = fdt_check_header(fdt);
+	if (err < 0)
+		return err;
+
+	/* find or create "/chosen" node. */
+	nodeoffset = fdt_find_or_add_subnode(fdt, 0, "chosen");
+	if (nodeoffset < 0)
+		return nodeoffset;
+
+	/* return without error if we are not overwriting and existing non-zero node */
+	orig = fdt_getprop(fdt, nodeoffset, "kaslr-seed", &len);
+	if (orig && len == sizeof(*orig))
+		data = fdt64_to_cpu(*orig);
+	if (data && !overwrite) {
+		debug("not overwriting existing kaslr-seed\n");
+		return 0;
+	}
+	err = uclass_get_device(UCLASS_RNG, 0, &dev);
+	if (err) {
+		printf("No RNG device\n");
+		return err;
+	}
+	err = dm_rng_read(dev, &data, sizeof(data));
+	if (err) {
+		dev_err(dev, "dm_rng_read failed: %d\n", err);
+		return err;
+	}
+	err = fdt_setprop(fdt, nodeoffset, "kaslr-seed", &data, sizeof(data));
+	if (err < 0)
+		printf("WARNING: could not set kaslr-seed %s.\n", fdt_strerror(err));
+
+	return err;
+}
+
 /**
  * board_fdt_chosen_bootargs - boards may override this function to use
  *                             alternative kernel command line arguments
diff --git a/include/fdt_support.h b/include/fdt_support.h
index 4b71b8948d9..741e2360c22 100644
--- a/include/fdt_support.h
+++ b/include/fdt_support.h
@@ -463,4 +463,14 @@ void fdt_fixup_board_enet(void *blob);
 #ifdef CONFIG_CMD_PSTORE
 void fdt_fixup_pstore(void *blob);
 #endif
+
+/**
+ * fdt_kaslrseed() - create a 'kaslr-seed' node in chosen
+ *
+ * @blob:	fdt blob
+ * @overwrite:	do not overwrite existing non-zero node unless true
+ * Return:	0 if OK, -ve on error
+ */
+int fdt_kaslrseed(void *blob, bool overwrite);
+
 #endif /* ifndef __FDT_SUPPORT_H */