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/pblimage.h

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012 Freescale Semiconductor, Inc.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef PBLIMAGE_H
+#define PBLIMAGE_H
+
+#define RCW_BYTES	64
+#define RCW_PREAMBLE	0xaa55aa55
+#define RCW_HEADER	0x010e0100
+
+struct pbl_header {
+	uint32_t preamble;
+	uint32_t rcwheader;
+	uint8_t rcw_data[RCW_BYTES];
+};
+
+#endif /* PBLIMAGE_H */