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/disk/part_dos.h

@@ -0,0 +1,33 @@
+/*
+ * (C) Copyright 2000
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#ifndef _DISK_PART_DOS_H
+#define _DISK_PART_DOS_H
+
+#define DOS_PART_DISKSIG_OFFSET	0x1b8
+#define DOS_PART_TBL_OFFSET	0x1be
+#define DOS_PART_MAGIC_OFFSET	0x1fe
+#define DOS_PBR_FSTYPE_OFFSET	0x36
+#define DOS_PBR32_FSTYPE_OFFSET	0x52
+#define DOS_PBR_MEDIA_TYPE_OFFSET	0x15
+#define DOS_MBR	0
+#define DOS_PBR	1
+
+typedef struct dos_partition {
+	unsigned char boot_ind;		/* 0x80 - active			*/
+	unsigned char head;		/* starting head			*/
+	unsigned char sector;		/* starting sector			*/
+	unsigned char cyl;		/* starting cylinder			*/
+	unsigned char sys_ind;		/* What partition type			*/
+	unsigned char end_head;		/* end head				*/
+	unsigned char end_sector;	/* end sector				*/
+	unsigned char end_cyl;		/* end cylinder				*/
+	unsigned char start4[4];	/* starting sector counting from 0	*/
+	unsigned char size4[4];		/* nr of sectors in partition		*/
+} dos_partition_t;
+
+#endif	/* _DISK_PART_DOS_H */