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/include/sed156x.h

@@ -0,0 +1,26 @@
+/*
+ * (C) Copyright 2004
+ *
+ * Pantelis Antoniou <panto@intracom.gr>
+ * Intracom S.A.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+/* Video support for Epson SED156x chipset(s) */
+
+#ifndef SED156X_H
+#define SED156X_H
+
+void sed156x_init(void);
+void sed156x_clear(void);
+void sed156x_output_at(int x, int y, const char *str, int size);
+void sed156x_reverse_at(int x, int y, int size);
+void sed156x_sync(void);
+void sed156x_scroll(int dx, int dy);
+
+/* export display */
+extern const int sed156x_text_width;
+extern const int sed156x_text_height;
+
+#endif	/* SED156X_H */