avionic design with actual uboot and tooling

submodule of avionic design uboot bootloader and with included tools to
get you started , read readme.md and readme-tk1-loader.md

u-boot/fs/yaffs2/yaffs_summary.h

@@ -0,0 +1,37 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Charles Manning <charles@aleph1.co.uk>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
+#ifndef __YAFFS_SUMMARY_H__
+#define __YAFFS_SUMMARY_H__
+
+#include "yaffs_packedtags2.h"
+
+
+int yaffs_summary_init(struct yaffs_dev *dev);
+void yaffs_summary_deinit(struct yaffs_dev *dev);
+
+int yaffs_summary_add(struct yaffs_dev *dev,
+			struct yaffs_ext_tags *tags,
+			int chunk_in_block);
+int yaffs_summary_fetch(struct yaffs_dev *dev,
+			struct yaffs_ext_tags *tags,
+			int chunk_in_block);
+int yaffs_summary_read(struct yaffs_dev *dev,
+			struct yaffs_summary_tags *st,
+			int blk);
+void yaffs_summary_gc(struct yaffs_dev *dev, int blk);
+
+
+#endif