[people/ms/u-boot.git] / net / tftp.c

/*
 *	Copyright 1994, 1995, 2000 Neil Russell.
 *	(See License)
 *	Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
 */

#include <common.h>
#include <command.h>
#include <net.h>
#include "tftp.h"
#include "bootp.h"

#undef	ET_DEBUG

#if (CONFIG_COMMANDS & CFG_CMD_NET)

#define WELL_KNOWN_PORT	69		/* Well known TFTP port #		*/
#define TIMEOUT		5		/* Seconds to timeout for a lost pkt	*/
#ifndef	CONFIG_NET_RETRY_COUNT
# define TIMEOUT_COUNT	10		/* # of timeouts before giving up  */
#else
# define TIMEOUT_COUNT  (CONFIG_NET_RETRY_COUNT * 2)
#endif
					/* (for checking the image size)	*/
#define HASHES_PER_LINE	65		/* Number of "loading" hashes per line	*/

/*
 *	TFTP operations.
 */
#define TFTP_RRQ	1
#define TFTP_WRQ	2
#define TFTP_DATA	3
#define TFTP_ACK	4
#define TFTP_ERROR	5
#define TFTP_OACK	6


static int	TftpServerPort;		/* The UDP port at their end		*/
static int	TftpOurPort;		/* The UDP port at our end		*/
static int	TftpTimeoutCount;
static ulong	TftpBlock;		/* packet sequence number		*/
static ulong	TftpLastBlock;		/* last packet sequence number received */
static ulong	TftpBlockWrap;		/* count of sequence number wraparounds */
static ulong	TftpBlockWrapOffset;	/* memory offset due to wrapping	*/
static int	TftpState;

#define STATE_RRQ	1
#define STATE_DATA	2
#define STATE_TOO_LARGE	3
#define STATE_BAD_MAGIC	4
#define STATE_OACK	5

#define TFTP_BLOCK_SIZE		512		    /* default TFTP block size	*/
#define TFTP_SEQUENCE_SIZE	((ulong)(1<<16))    /* sequence number is 16 bit */

#define DEFAULT_NAME_LEN	(8 + 4 + 1)
static char default_filename[DEFAULT_NAME_LEN];
static char *tftp_filename;

#ifdef CFG_DIRECT_FLASH_TFTP
extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
#endif

static __inline__ void
store_block (unsigned block, uchar * src, unsigned len)
{
	ulong offset = block * TFTP_BLOCK_SIZE + TftpBlockWrapOffset;
	ulong newsize = offset + len;
#ifdef CFG_DIRECT_FLASH_TFTP
	int i, rc = 0;

	for (i=0; i<CFG_MAX_FLASH_BANKS; i++) {
		/* start address in flash? */
		if (load_addr + offset >= flash_info[i].start[0]) {
			rc = 1;
			break;
		}
	}

	if (rc) { /* Flash is destination for this packet */
		rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
		if (rc) {
			flash_perror (rc);
			NetState = NETLOOP_FAIL;
			return;
		}
	}
	else
#endif /* CFG_DIRECT_FLASH_TFTP */
	{
		(void)memcpy((void *)(load_addr + offset), src, len);
	}

	if (NetBootFileXferSize < newsize)
		NetBootFileXferSize = newsize;
}

static void TftpSend (void);
static void TftpTimeout (void);

/**********************************************************************/

static void
TftpSend (void)
{
	volatile uchar *	pkt;
	volatile uchar *	xp;
	int			len = 0;
	volatile ushort *s;

	/*
	 *	We will always be sending some sort of packet, so
	 *	cobble together the packet headers now.
	 */
	pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE;

	switch (TftpState) {

	case STATE_RRQ:
		xp = pkt;
		s = (ushort *)pkt;
		*s++ = htons(TFTP_RRQ);
		pkt = (uchar *)s;
		strcpy ((char *)pkt, tftp_filename);
		pkt += strlen(tftp_filename) + 1;
		strcpy ((char *)pkt, "octet");
		pkt += 5 /*strlen("octet")*/ + 1;
		strcpy ((char *)pkt, "timeout");
		pkt += 7 /*strlen("timeout")*/ + 1;
		sprintf((char *)pkt, "%d", TIMEOUT);
#ifdef ET_DEBUG
		printf("send option \"timeout %s\"\n", (char *)pkt);
#endif
		pkt += strlen((char *)pkt) + 1;
		len = pkt - xp;
		break;

	case STATE_DATA:
	case STATE_OACK:
		xp = pkt;
		s = (ushort *)pkt;
		*s++ = htons(TFTP_ACK);
		*s++ = htons(TftpBlock);
		pkt = (uchar *)s;
		len = pkt - xp;
		break;

	case STATE_TOO_LARGE:
		xp = pkt;
		s = (ushort *)pkt;
		*s++ = htons(TFTP_ERROR);
		*s++ = htons(3);
		pkt = (uchar *)s;
		strcpy ((char *)pkt, "File too large");
		pkt += 14 /*strlen("File too large")*/ + 1;
		len = pkt - xp;
		break;

	case STATE_BAD_MAGIC:
		xp = pkt;
		s = (ushort *)pkt;
		*s++ = htons(TFTP_ERROR);
		*s++ = htons(2);
		pkt = (uchar *)s;
		strcpy ((char *)pkt, "File has bad magic");
		pkt += 18 /*strlen("File has bad magic")*/ + 1;
		len = pkt - xp;
		break;
	}

	NetSendUDPPacket(NetServerEther, NetServerIP, TftpServerPort, TftpOurPort, len);
}


static void
TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
{
	ushort proto;
	ushort *s;

	if (dest != TftpOurPort) {
		return;
	}
	if (TftpState != STATE_RRQ && src != TftpServerPort) {
		return;
	}

	if (len < 2) {
		return;
	}
	len -= 2;
	/* warning: don't use increment (++) in ntohs() macros!! */
	s = (ushort *)pkt;
	proto = *s++;
	pkt = (uchar *)s;
	switch (ntohs(proto)) {

	case TFTP_RRQ:
	case TFTP_WRQ:
	case TFTP_ACK:
		break;
	default:
		break;

	case TFTP_OACK:
#ifdef ET_DEBUG
		printf("Got OACK: %s %s\n", pkt, pkt+strlen(pkt)+1);
#endif
		TftpState = STATE_OACK;
		TftpServerPort = src;
		TftpSend (); /* Send ACK */
		break;
	case TFTP_DATA:
		if (len < 2)
			return;
		len -= 2;
		TftpBlock = ntohs(*(ushort *)pkt);

		/*
		 * RFC1350 specifies that the first data packet will
		 * have sequence number 1. If we receive a sequence
		 * number of 0 this means that there was a wrap
		 * around of the (16 bit) counter.
		 */
		if (TftpBlock == 0) {
			TftpBlockWrap++;
			TftpBlockWrapOffset += TFTP_BLOCK_SIZE * TFTP_SEQUENCE_SIZE;
			printf ("\n\t %lu MB reveived\n\t ", TftpBlockWrapOffset>>20);
		} else {
			if (((TftpBlock - 1) % 10) == 0) {
				putc ('#');
			} else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) {
				puts ("\n\t ");
			}
		}

#ifdef ET_DEBUG
		if (TftpState == STATE_RRQ) {
			puts ("Server did not acknowledge timeout option!\n");
		}
#endif

		if (TftpState == STATE_RRQ || TftpState == STATE_OACK) {
			/* first block received */
			TftpState = STATE_DATA;
			TftpServerPort = src;
			TftpLastBlock = 0;
			TftpBlockWrap = 0;
			TftpBlockWrapOffset = 0;

			if (TftpBlock != 1) {	/* Assertion */
				printf ("\nTFTP error: "
					"First block is not block 1 (%ld)\n"
					"Starting again\n\n",
					TftpBlock);
				NetStartAgain ();
				break;
			}
		}

		if (TftpBlock == TftpLastBlock) {
			/*
			 *	Same block again; ignore it.
			 */
			break;
		}

		TftpLastBlock = TftpBlock;
		NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);

		store_block (TftpBlock - 1, pkt + 2, len);

		/*
		 *	Acknoledge the block just received, which will prompt
		 *	the server for the next one.
		 */
		TftpSend ();

		if (len < TFTP_BLOCK_SIZE) {
			/*
			 *	We received the whole thing.  Try to
			 *	run it.
			 */
			puts ("\ndone\n");
			NetState = NETLOOP_SUCCESS;
		}
		break;

	case TFTP_ERROR:
		printf ("\nTFTP error: '%s' (%d)\n",
					pkt + 2, ntohs(*(ushort *)pkt));
		puts ("Starting again\n\n");
		NetStartAgain ();
		break;
	}
}


static void
TftpTimeout (void)
{
	if (++TftpTimeoutCount > TIMEOUT_COUNT) {
		puts ("\nRetry count exceeded; starting again\n");
		NetStartAgain ();
	} else {
		puts ("T ");
		NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
		TftpSend ();
	}
}


void
TftpStart (void)
{
	if (BootFile[0] == '\0') {
		sprintf(default_filename, "%02lX%02lX%02lX%02lX.img",
			NetOurIP & 0xFF,
			(NetOurIP >>  8) & 0xFF,
			(NetOurIP >> 16) & 0xFF,
			(NetOurIP >> 24) & 0xFF	);
		tftp_filename = default_filename;

		printf ("*** Warning: no boot file name; using '%s'\n",
			tftp_filename);
	} else {
		tftp_filename = BootFile;
	}

#if defined(CONFIG_NET_MULTI)
	printf ("Using %s device\n", eth_get_name());
#endif
	puts ("TFTP from server ");	print_IPaddr (NetServerIP);
	puts ("; our IP address is ");	print_IPaddr (NetOurIP);

	/* Check if we need to send across this subnet */
	if (NetOurGatewayIP && NetOurSubnetMask) {
	    IPaddr_t OurNet 	= NetOurIP    & NetOurSubnetMask;
	    IPaddr_t ServerNet 	= NetServerIP & NetOurSubnetMask;

	    if (OurNet != ServerNet) {
		puts ("; sending through gateway ");
		print_IPaddr (NetOurGatewayIP) ;
	    }
	}
	putc ('\n');

	printf ("Filename '%s'.", tftp_filename);

	if (NetBootFileSize) {
		printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
		print_size (NetBootFileSize<<9, "");
	}

	putc ('\n');

	printf ("Load address: 0x%lx\n", load_addr);

	puts ("Loading: *\b");

	NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
	NetSetHandler (TftpHandler);

	TftpServerPort = WELL_KNOWN_PORT;
	TftpTimeoutCount = 0;
	TftpState = STATE_RRQ;
	TftpOurPort = 1024 + (get_timer(0) % 3072);
	TftpBlock = 0;

	/* zero out server ether in case the server ip has changed */
	memset(NetServerEther, 0, 6);

	TftpSend ();
}

#endif /* CFG_CMD_NET */
Commit	Line	Data
fe8c2806 WD	1	/*
	2	* Copyright 1994, 1995, 2000 Neil Russell.
	3	* (See License)
	4	* Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
	5	*/
	6
	7	#include <common.h>
	8	#include <command.h>
	9	#include <net.h>
	10	#include "tftp.h"
	11	#include "bootp.h"
	12
	13	#undef ET_DEBUG
	14
	15	#if (CONFIG_COMMANDS & CFG_CMD_NET)
	16
	17	#define WELL_KNOWN_PORT 69 /* Well known TFTP port # */
fbe4b5cb	18	#define TIMEOUT 5 /* Seconds to timeout for a lost pkt */
fe8c2806 WD	19	#ifndef CONFIG_NET_RETRY_COUNT
	20	# define TIMEOUT_COUNT 10 /* # of timeouts before giving up */
	21	#else
	22	# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
	23	#endif
	24	/* (for checking the image size) */
	25	#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
	26
	27	/*
	28	* TFTP operations.
	29	*/
	30	#define TFTP_RRQ 1
	31	#define TFTP_WRQ 2
	32	#define TFTP_DATA 3
	33	#define TFTP_ACK 4
	34	#define TFTP_ERROR 5
fbe4b5cb	35	#define TFTP_OACK 6
fe8c2806 WD	36
	37
	38	static int TftpServerPort; /* The UDP port at their end */
	39	static int TftpOurPort; /* The UDP port at our end */
	40	static int TftpTimeoutCount;
3f85ce27 WD	41	static ulong TftpBlock; /* packet sequence number */
	42	static ulong TftpLastBlock; /* last packet sequence number received */
	43	static ulong TftpBlockWrap; /* count of sequence number wraparounds */
	44	static ulong TftpBlockWrapOffset; /* memory offset due to wrapping */
fe8c2806	45	static int TftpState;
3f85ce27	46
fe8c2806 WD	47	#define STATE_RRQ 1
	48	#define STATE_DATA 2
	49	#define STATE_TOO_LARGE 3
	50	#define STATE_BAD_MAGIC 4
fbe4b5cb	51	#define STATE_OACK 5
fe8c2806	52
3f85ce27 WD	53	#define TFTP_BLOCK_SIZE 512 /* default TFTP block size */
	54	#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16)) /* sequence number is 16 bit */
	55
fe8c2806 WD	56	#define DEFAULT_NAME_LEN (8 + 4 + 1)
	57	static char default_filename[DEFAULT_NAME_LEN];
	58	static char *tftp_filename;
	59
	60	#ifdef CFG_DIRECT_FLASH_TFTP
	61	extern flash_info_t flash_info[CFG_MAX_FLASH_BANKS];
	62	#endif
	63
	64	static __inline__ void
	65	store_block (unsigned block, uchar * src, unsigned len)
	66	{
3f85ce27 WD	67	ulong offset = block * TFTP_BLOCK_SIZE + TftpBlockWrapOffset;
3f85ce27 WD	68	ulong newsize = offset + len;
fe8c2806 WD	69	#ifdef CFG_DIRECT_FLASH_TFTP
	70	int i, rc = 0;
	71
	72	for (i=0; i<CFG_MAX_FLASH_BANKS; i++) {
	73	/* start address in flash? */
	74	if (load_addr + offset >= flash_info[i].start[0]) {
	75	rc = 1;
	76	break;
	77	}
	78	}
	79
	80	if (rc) { /* Flash is destination for this packet */
	81	rc = flash_write ((uchar *)src, (ulong)(load_addr+offset), len);
	82	if (rc) {
	83	flash_perror (rc);
	84	NetState = NETLOOP_FAIL;
	85	return;
	86	}
	87	}
	88	else
	89	#endif /* CFG_DIRECT_FLASH_TFTP */
	90	{
	91	(void)memcpy((void *)(load_addr + offset), src, len);
	92	}
	93
	94	if (NetBootFileXferSize < newsize)
	95	NetBootFileXferSize = newsize;
	96	}
	97
	98	static void TftpSend (void);
	99	static void TftpTimeout (void);
	100
	101	/**********************************************************************/
	102
	103	static void
	104	TftpSend (void)
	105	{
	106	volatile uchar * pkt;
	107	volatile uchar * xp;
	108	int len = 0;
7bc5ee07	109	volatile ushort *s;
fe8c2806 WD	110
	111	/*
	112	* We will always be sending some sort of packet, so
	113	* cobble together the packet headers now.
	114	*/
a3d991bd	115	pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE;
fe8c2806 WD	116
	117	switch (TftpState) {
	118
	119	case STATE_RRQ:
	120	xp = pkt;
7bc5ee07 WD	121	s = (ushort *)pkt;
	122	*s++ = htons(TFTP_RRQ);
	123	pkt = (uchar *)s;
fe8c2806 WD	124	strcpy ((char *)pkt, tftp_filename);
	125	pkt += strlen(tftp_filename) + 1;
	126	strcpy ((char *)pkt, "octet");
	127	pkt += 5 /strlen("octet")/ + 1;
fbe4b5cb WD	128	strcpy ((char *)pkt, "timeout");
	129	pkt += 7 /strlen("timeout")/ + 1;
	130	sprintf((char *)pkt, "%d", TIMEOUT);
	131	#ifdef ET_DEBUG
	132	printf("send option \"timeout %s\"\n", (char *)pkt);
	133	#endif
	134	pkt += strlen((char *)pkt) + 1;
fe8c2806 WD	135	len = pkt - xp;
	136	break;
	137
	138	case STATE_DATA:
fbe4b5cb	139	case STATE_OACK:
fe8c2806	140	xp = pkt;
7bc5ee07 WD	141	s = (ushort *)pkt;
	142	*s++ = htons(TFTP_ACK);
	143	*s++ = htons(TftpBlock);
	144	pkt = (uchar *)s;
fe8c2806 WD	145	len = pkt - xp;
	146	break;
	147
	148	case STATE_TOO_LARGE:
	149	xp = pkt;
7bc5ee07 WD	150	s = (ushort *)pkt;
	151	*s++ = htons(TFTP_ERROR);
	152	*s++ = htons(3);
	153	pkt = (uchar *)s;
fe8c2806 WD	154	strcpy ((char *)pkt, "File too large");
	155	pkt += 14 /strlen("File too large")/ + 1;
	156	len = pkt - xp;
	157	break;
	158
	159	case STATE_BAD_MAGIC:
	160	xp = pkt;
7bc5ee07 WD	161	s = (ushort *)pkt;
	162	*s++ = htons(TFTP_ERROR);
	163	*s++ = htons(2);
	164	pkt = (uchar *)s;
fe8c2806 WD	165	strcpy ((char *)pkt, "File has bad magic");
	166	pkt += 18 /strlen("File has bad magic")/ + 1;
	167	len = pkt - xp;
	168	break;
	169	}
	170
73a8b27c	171	NetSendUDPPacket(NetServerEther, NetServerIP, TftpServerPort, TftpOurPort, len);
fe8c2806 WD	172	}
	173
	174
	175	static void
	176	TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
	177	{
	178	ushort proto;
7bc5ee07	179	ushort *s;
fe8c2806 WD	180
	181	if (dest != TftpOurPort) {
	182	return;
	183	}
	184	if (TftpState != STATE_RRQ && src != TftpServerPort) {
	185	return;
	186	}
	187
	188	if (len < 2) {
	189	return;
	190	}
	191	len -= 2;
	192	/* warning: don't use increment (++) in ntohs() macros!! */
7bc5ee07 WD	193	s = (ushort *)pkt;
	194	proto = *s++;
	195	pkt = (uchar *)s;
fe8c2806 WD	196	switch (ntohs(proto)) {
	197
	198	case TFTP_RRQ:
	199	case TFTP_WRQ:
	200	case TFTP_ACK:
	201	break;
	202	default:
	203	break;
	204
fbe4b5cb WD	205	case TFTP_OACK:
	206	#ifdef ET_DEBUG
	207	printf("Got OACK: %s %s\n", pkt, pkt+strlen(pkt)+1);
	208	#endif
	209	TftpState = STATE_OACK;
	210	TftpServerPort = src;
	211	TftpSend (); /* Send ACK */
	212	break;
fe8c2806 WD	213	case TFTP_DATA:
	214	if (len < 2)
	215	return;
	216	len -= 2;
	217	TftpBlock = ntohs((ushort )pkt);
3f85ce27 WD	218
3f85ce27 WD	219	/*
cd0a9de6 WD	220	* RFC1350 specifies that the first data packet will
	221	* have sequence number 1. If we receive a sequence
	222	* number of 0 this means that there was a wrap
	223	* around of the (16 bit) counter.
3f85ce27 WD	224	*/
	225	if (TftpBlock == 0) {
	226	TftpBlockWrap++;
	227	TftpBlockWrapOffset += TFTP_BLOCK_SIZE * TFTP_SEQUENCE_SIZE;
	228	printf ("\n\t %lu MB reveived\n\t ", TftpBlockWrapOffset>>20);
	229	} else {
	230	if (((TftpBlock - 1) % 10) == 0) {
	231	putc ('#');
	232	} else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) {
	233	puts ("\n\t ");
	234	}
fe8c2806 WD	235	}
fe8c2806 WD	236
fbe4b5cb	237	#ifdef ET_DEBUG
fe8c2806	238	if (TftpState == STATE_RRQ) {
4b9206ed	239	puts ("Server did not acknowledge timeout option!\n");
fbe4b5cb WD	240	}
	241	#endif
	242
	243	if (TftpState == STATE_RRQ \|\| TftpState == STATE_OACK) {
3f85ce27	244	/* first block received */
fe8c2806 WD	245	TftpState = STATE_DATA;
	246	TftpServerPort = src;
	247	TftpLastBlock = 0;
3f85ce27 WD	248	TftpBlockWrap = 0;
3f85ce27 WD	249	TftpBlockWrapOffset = 0;
fe8c2806 WD	250
	251	if (TftpBlock != 1) { /* Assertion */
	252	printf ("\nTFTP error: "
3f85ce27	253	"First block is not block 1 (%ld)\n"
fe8c2806 WD	254	"Starting again\n\n",
	255	TftpBlock);
	256	NetStartAgain ();
	257	break;
	258	}
	259	}
	260
	261	if (TftpBlock == TftpLastBlock) {
	262	/*
	263	* Same block again; ignore it.
	264	*/
	265	break;
	266	}
	267
	268	TftpLastBlock = TftpBlock;
	269	NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
	270
	271	store_block (TftpBlock - 1, pkt + 2, len);
	272
	273	/*
	274	* Acknoledge the block just received, which will prompt
	275	* the server for the next one.
	276	*/
	277	TftpSend ();
	278
3f85ce27	279	if (len < TFTP_BLOCK_SIZE) {
fe8c2806 WD	280	/*
	281	* We received the whole thing. Try to
	282	* run it.
	283	*/
	284	puts ("\ndone\n");
	285	NetState = NETLOOP_SUCCESS;
	286	}
	287	break;
	288
	289	case TFTP_ERROR:
	290	printf ("\nTFTP error: '%s' (%d)\n",
	291	pkt + 2, ntohs((ushort )pkt));
	292	puts ("Starting again\n\n");
	293	NetStartAgain ();
	294	break;
	295	}
	296	}
	297
	298
	299	static void
	300	TftpTimeout (void)
	301	{
e0ac62d7	302	if (++TftpTimeoutCount > TIMEOUT_COUNT) {
fe8c2806 WD	303	puts ("\nRetry count exceeded; starting again\n");
	304	NetStartAgain ();
	305	} else {
	306	puts ("T ");
	307	NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
	308	TftpSend ();
	309	}
	310	}
	311
	312
	313	void
	314	TftpStart (void)
	315	{
fe8c2806	316	if (BootFile[0] == '\0') {
fe8c2806	317	sprintf(default_filename, "%02lX%02lX%02lX%02lX.img",
c43352cc WD	318	NetOurIP & 0xFF,
	319	(NetOurIP >> 8) & 0xFF,
	320	(NetOurIP >> 16) & 0xFF,
	321	(NetOurIP >> 24) & 0xFF );
fe8c2806 WD	322	tftp_filename = default_filename;
	323
	324	printf ("*** Warning: no boot file name; using '%s'\n",
	325	tftp_filename);
	326	} else {
	327	tftp_filename = BootFile;
	328	}
	329
5bb226e8 WD	330	#if defined(CONFIG_NET_MULTI)
	331	printf ("Using %s device\n", eth_get_name());
	332	#endif
fe8c2806 WD	333	puts ("TFTP from server "); print_IPaddr (NetServerIP);
	334	puts ("; our IP address is "); print_IPaddr (NetOurIP);
	335
	336	/* Check if we need to send across this subnet */
	337	if (NetOurGatewayIP && NetOurSubnetMask) {
	338	IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
	339	IPaddr_t ServerNet = NetServerIP & NetOurSubnetMask;
	340
	341	if (OurNet != ServerNet) {
	342	puts ("; sending through gateway ");
	343	print_IPaddr (NetOurGatewayIP) ;
	344	}
	345	}
	346	putc ('\n');
	347
	348	printf ("Filename '%s'.", tftp_filename);
	349
	350	if (NetBootFileSize) {
	351	printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
	352	print_size (NetBootFileSize<<9, "");
	353	}
	354
	355	putc ('\n');
	356
	357	printf ("Load address: 0x%lx\n", load_addr);
	358
	359	puts ("Loading: *\b");
	360
	361	NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
	362	NetSetHandler (TftpHandler);
	363
	364	TftpServerPort = WELL_KNOWN_PORT;
	365	TftpTimeoutCount = 0;
	366	TftpState = STATE_RRQ;
	367	TftpOurPort = 1024 + (get_timer(0) % 3072);
fbe4b5cb	368	TftpBlock = 0;
fe8c2806	369
73a8b27c WD	370	/* zero out server ether in case the server ip has changed */
	371	memset(NetServerEther, 0, 6);
	372
fe8c2806 WD	373	TftpSend ();
	374	}
	375
	376	#endif /* CFG_CMD_NET */