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/net/bootp.h

@@ -0,0 +1,93 @@
+/*
+ *	Copied from LiMon - BOOTP.
+ *
+ *	Copyright 1994, 1995, 2000 Neil Russell.
+ *	(See License)
+ *	Copyright 2000 Paolo Scaffardi
+ */
+
+#ifndef __BOOTP_H__
+#define __BOOTP_H__
+
+#ifndef __NET_H__
+#include <net.h>
+#endif /* __NET_H__ */
+
+/**********************************************************************/
+
+/*
+ *	BOOTP header.
+ */
+#if defined(CONFIG_CMD_DHCP)
+/* Minimum DHCP Options size per RFC2131 - results in 576 byte pkt */
+#define OPT_FIELD_SIZE 312
+#if defined(CONFIG_BOOTP_VENDOREX)
+extern u8 *dhcp_vendorex_prep(u8 *e); /*rtn new e after add own opts. */
+extern u8 *dhcp_vendorex_proc(u8 *e); /*rtn next e if mine,else NULL  */
+#endif
+#else
+#define OPT_FIELD_SIZE 64
+#endif
+
+struct bootp_hdr {
+	u8		bp_op;		/* Operation			*/
+# define OP_BOOTREQUEST	1
+# define OP_BOOTREPLY	2
+	u8		bp_htype;	/* Hardware type		*/
+# define HWT_ETHER	1
+	u8		bp_hlen;	/* Hardware address length	*/
+# define HWL_ETHER	6
+	u8		bp_hops;	/* Hop count (gateway thing)	*/
+	u32		bp_id;		/* Transaction ID		*/
+	u16		bp_secs;	/* Seconds since boot		*/
+	u16		bp_spare1;	/* Alignment			*/
+	struct in_addr	bp_ciaddr;	/* Client IP address		*/
+	struct in_addr	bp_yiaddr;	/* Your (client) IP address	*/
+	struct in_addr	bp_siaddr;	/* Server IP address		*/
+	struct in_addr	bp_giaddr;	/* Gateway IP address		*/
+	u8		bp_chaddr[16];	/* Client hardware address	*/
+	char		bp_sname[64];	/* Server host name		*/
+	char		bp_file[128];	/* Boot file name		*/
+	char		bp_vend[OPT_FIELD_SIZE]; /* Vendor information	*/
+};
+
+#define BOOTP_HDR_SIZE	sizeof(struct bootp_hdr)
+
+/**********************************************************************/
+/*
+ *	Global functions and variables.
+ */
+
+/* bootp.c */
+extern u32	bootp_id;		/* ID of cur BOOTP request	*/
+extern int	bootp_try;
+
+
+/* Send a BOOTP request */
+void bootp_reset(void);
+void bootp_request(void);
+
+/****************** DHCP Support *********************/
+void dhcp_request(void);
+
+/* DHCP States */
+typedef enum { INIT,
+	       INIT_REBOOT,
+	       REBOOTING,
+	       SELECTING,
+	       REQUESTING,
+	       REBINDING,
+	       BOUND,
+	       RENEWING } dhcp_state_t;
+
+#define DHCP_DISCOVER 1
+#define DHCP_OFFER    2
+#define DHCP_REQUEST  3
+#define DHCP_DECLINE  4
+#define DHCP_ACK      5
+#define DHCP_NAK      6
+#define DHCP_RELEASE  7
+
+/**********************************************************************/
+
+#endif /* __BOOTP_H__ */