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/xyzModem.h

@@ -0,0 +1,77 @@
+/*
+ *==========================================================================
+ *
+ *      xyzModem.h
+ *
+ *      RedBoot stream handler for xyzModem protocol
+ *
+ *==========================================================================
+ * SPDX-License-Identifier:	eCos-2.0
+ *==========================================================================
+ *#####DESCRIPTIONBEGIN####
+ *
+ * Author(s):    gthomas
+ * Contributors: gthomas
+ * Date:         2000-07-14
+ * Purpose:
+ * Description:
+ *
+ * This code is part of RedBoot (tm).
+ *
+ *####DESCRIPTIONEND####
+ *
+ *==========================================================================
+ */
+
+#ifndef _XYZMODEM_H_
+#define _XYZMODEM_H_
+
+#define xyzModem_xmodem 1
+#define xyzModem_ymodem 2
+/* Don't define this until the protocol support is in place */
+/*#define xyzModem_zmodem 3 */
+
+#define xyzModem_access   -1
+#define xyzModem_noZmodem -2
+#define xyzModem_timeout  -3
+#define xyzModem_eof      -4
+#define xyzModem_cancel   -5
+#define xyzModem_frame    -6
+#define xyzModem_cksum    -7
+#define xyzModem_sequence -8
+
+#define xyzModem_close 1
+#define xyzModem_abort 2
+
+
+#ifdef REDBOOT
+extern getc_io_funcs_t xyzModem_io;
+#else
+#define CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT
+#define CYGACC_CALL_IF_SET_CONSOLE_COMM(x)
+
+#define diag_vprintf vprintf
+#define diag_printf printf
+#define diag_vsprintf vsprintf
+
+#define CYGACC_CALL_IF_DELAY_US(x) udelay(x)
+
+typedef struct {
+    char *filename;
+    int   mode;
+    int   chan;
+#ifdef CYGPKG_REDBOOT_NETWORKING
+    struct sockaddr_in *server;
+#endif
+} connection_info_t;
+
+#endif
+
+
+int   xyzModem_stream_open(connection_info_t *info, int *err);
+void  xyzModem_stream_close(int *err);
+void  xyzModem_stream_terminate(bool method, int (*getc)(void));
+int   xyzModem_stream_read(char *buf, int size, int *err);
+char *xyzModem_error(int err);
+
+#endif /* _XYZMODEM_H_ */