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/tools/tbot/README-ToDo

@@ -0,0 +1,62 @@
+# Copyright (c) 2016 DENX Software Engineering GmbH
+# Heiko Schocher <hs@denx.de>
+#
+# SPDX-License-Identifier:	GPL-2.0+
+#
+
+ToDo list for tbot
+==================
+
+please look also into the tbot ToDo list.
+https://github.com/hsdenx/tbot/blob/master/ToDo
+
+- cleanup tbot code:
+  - remove all retry / timeout pieces of code
+  - clean up tbot function names, as I am not good in
+    giving function a understandable name ;-)
+  - as I am not a python programmer, cleanup whole tbot code
+
+- introduce a "layering" like yocto do, so U-Boot TC can integrated
+  into U-Boot source code.
+
+  Proposal:
+  introduce  subdirs in "src/tc"
+
+       lab: all lab specific stuff
+       lab/common: common lab stuff (for example ssh handling)
+       lab/ssh_std: ssh_std specific stuff
+
+       u-boot: all u-boot tests
+       u-boot/common: common u-boot tc
+       u-boot/duts: DUTS tc
+       u-boot-dxr2: all u-boot dxr2 board specific tc
+
+       board: board tc
+       board/common: common board tc
+       board/dxr2: all tc for dxr2 board
+
+       linux: all linux tc
+       linux/common: common linux tc
+       linux/dxr2
+
+  - move U-Boot special TC to U-Boot source
+    -> need a mechanism in tbot, how it gets automatically for example
+       U-Boot TC from U-Boot source...
+    -> add a consistency checker
+
+- simplify tbot log output (seperate a lot of output which is currently
+  in INFO logging level, to another logging level)
+  started (new loglevel "CON", whih prints read/write from console only), see:
+  https://github.com/hsdenx/tbot/commit/b4ab2567ad8c19ad53f785203159d3c8465a21c6
+  - make the timestamp configurable
+
+- Open more than 2 filehandles ?
+  Do we need for more complex TC more than 2 filehandles?
+
+- Find a way to document all TC and document all variables they use in an
+  automated way.
+
+- write a lot of more TC
+
+- get U-Boot configuration settings from current U-Boot code and use
+  them in U-Boot TC-es