[][Add tool to support embed dm-verity bootargs into fdt]
[Description]
Add tool to support embed dm-verity bootargs into fdt
[Release-log]
N/A
Change-Id: I65ef262484ecc48efc513b0ef1a0cb96e5440011
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5850557
diff --git a/tools/fdt-patch-dm-verify/src/libfdt/fdt_empty_tree.c b/tools/fdt-patch-dm-verify/src/libfdt/fdt_empty_tree.c
new file mode 100644
index 0000000..49d54d4
--- /dev/null
+++ b/tools/fdt-patch-dm-verify/src/libfdt/fdt_empty_tree.c
@@ -0,0 +1,38 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR BSD-2-Clause)
+/*
+ * libfdt - Flat Device Tree manipulation
+ * Copyright (C) 2012 David Gibson, IBM Corporation.
+ */
+#include "libfdt_env.h"
+
+#include <fdt.h>
+#include <libfdt.h>
+
+#include "libfdt_internal.h"
+
+int fdt_create_empty_tree(void *buf, int bufsize)
+{
+ int err;
+
+ err = fdt_create(buf, bufsize);
+ if (err)
+ return err;
+
+ err = fdt_finish_reservemap(buf);
+ if (err)
+ return err;
+
+ err = fdt_begin_node(buf, "");
+ if (err)
+ return err;
+
+ err = fdt_end_node(buf);
+ if (err)
+ return err;
+
+ err = fdt_finish(buf);
+ if (err)
+ return err;
+
+ return fdt_open_into(buf, buf, bufsize);
+}