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wdenkfe8c2802002-11-03 00:38:21 +00001/*
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
Jon Loeliger643d1ab2007-07-09 17:45:14 -050015#if defined(CONFIG_CMD_NET)
wdenkfe8c2802002-11-03 00:38:21 +000016
17#define WELL_KNOWN_PORT 69 /* Well known TFTP port # */
Jean-Christophe PLAGNIOL-VILLARD079c2c42007-11-17 11:31:10 +010018#define TIMEOUT 5UL /* Seconds to timeout for a lost pkt */
wdenkfe8c2802002-11-03 00:38:21 +000019#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
wdenkfbe4b5c2003-10-06 21:55:32 +000035#define TFTP_OACK 6
wdenkfe8c2802002-11-03 00:38:21 +000036
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +010037static IPaddr_t TftpServerIP;
wdenkfe8c2802002-11-03 00:38:21 +000038static int TftpServerPort; /* The UDP port at their end */
39static int TftpOurPort; /* The UDP port at our end */
40static int TftpTimeoutCount;
wdenk3f85ce22004-02-23 16:11:30 +000041static ulong TftpBlock; /* packet sequence number */
42static ulong TftpLastBlock; /* last packet sequence number received */
43static ulong TftpBlockWrap; /* count of sequence number wraparounds */
44static ulong TftpBlockWrapOffset; /* memory offset due to wrapping */
wdenkfe8c2802002-11-03 00:38:21 +000045static int TftpState;
wdenk3f85ce22004-02-23 16:11:30 +000046
wdenkfe8c2802002-11-03 00:38:21 +000047#define STATE_RRQ 1
48#define STATE_DATA 2
49#define STATE_TOO_LARGE 3
50#define STATE_BAD_MAGIC 4
wdenkfbe4b5c2003-10-06 21:55:32 +000051#define STATE_OACK 5
wdenkfe8c2802002-11-03 00:38:21 +000052
wdenk3f85ce22004-02-23 16:11:30 +000053#define TFTP_BLOCK_SIZE 512 /* default TFTP block size */
54#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16)) /* sequence number is 16 bit */
55
wdenkfe8c2802002-11-03 00:38:21 +000056#define DEFAULT_NAME_LEN (8 + 4 + 1)
57static char default_filename[DEFAULT_NAME_LEN];
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +010058
59#ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
60#define MAX_LEN 128
61#else
62#define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
63#endif
64
65static char tftp_filename[MAX_LEN];
wdenkfe8c2802002-11-03 00:38:21 +000066
67#ifdef CFG_DIRECT_FLASH_TFTP
Marian Balakowicze6f2e902005-10-11 19:09:42 +020068extern flash_info_t flash_info[];
wdenkfe8c2802002-11-03 00:38:21 +000069#endif
70
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +020071/* 512 is poor choice for ethernet, MTU is typically 1500.
72 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
David Updegraff53a5c422007-06-11 10:41:07 -050073 * almost-MTU block sizes. At least try... fall back to 512 if need be.
74 */
75#define TFTP_MTU_BLOCKSIZE 1468
76static unsigned short TftpBlkSize=TFTP_BLOCK_SIZE;
77static unsigned short TftpBlkSizeOption=TFTP_MTU_BLOCKSIZE;
78
79#ifdef CONFIG_MCAST_TFTP
80#include <malloc.h>
81#define MTFTP_BITMAPSIZE 0x1000
82static unsigned *Bitmap;
83static int PrevBitmapHole,Mapsize=MTFTP_BITMAPSIZE;
84static uchar ProhibitMcast=0, MasterClient=0;
85static uchar Multicast=0;
86extern IPaddr_t Mcast_addr;
87static int Mcast_port;
88static ulong TftpEndingBlock; /* can get 'last' block before done..*/
89
90static void parse_multicast_oack(char *pkt,int len);
91
92static void
93mcast_cleanup(void)
94{
95 if (Mcast_addr) eth_mcast_join(Mcast_addr, 0);
96 if (Bitmap) free(Bitmap);
97 Bitmap=NULL;
98 Mcast_addr = Multicast = Mcast_port = 0;
99 TftpEndingBlock = -1;
100}
101
102#endif /* CONFIG_MCAST_TFTP */
103
wdenkfe8c2802002-11-03 00:38:21 +0000104static __inline__ void
105store_block (unsigned block, uchar * src, unsigned len)
106{
David Updegraff53a5c422007-06-11 10:41:07 -0500107 ulong offset = block * TftpBlkSize + TftpBlockWrapOffset;
wdenk3f85ce22004-02-23 16:11:30 +0000108 ulong newsize = offset + len;
wdenkfe8c2802002-11-03 00:38:21 +0000109#ifdef CFG_DIRECT_FLASH_TFTP
110 int i, rc = 0;
111
112 for (i=0; i<CFG_MAX_FLASH_BANKS; i++) {
113 /* start address in flash? */
114 if (load_addr + offset >= flash_info[i].start[0]) {
115 rc = 1;
116 break;
117 }
118 }
119
120 if (rc) { /* Flash is destination for this packet */
Wolfgang Denk77ddac92005-10-13 16:45:02 +0200121 rc = flash_write ((char *)src, (ulong)(load_addr+offset), len);
wdenkfe8c2802002-11-03 00:38:21 +0000122 if (rc) {
123 flash_perror (rc);
124 NetState = NETLOOP_FAIL;
125 return;
126 }
127 }
128 else
129#endif /* CFG_DIRECT_FLASH_TFTP */
130 {
131 (void)memcpy((void *)(load_addr + offset), src, len);
132 }
David Updegraff53a5c422007-06-11 10:41:07 -0500133#ifdef CONFIG_MCAST_TFTP
134 if (Multicast)
135 ext2_set_bit(block, Bitmap);
136#endif
wdenkfe8c2802002-11-03 00:38:21 +0000137
138 if (NetBootFileXferSize < newsize)
139 NetBootFileXferSize = newsize;
140}
141
142static void TftpSend (void);
143static void TftpTimeout (void);
144
145/**********************************************************************/
146
147static void
148TftpSend (void)
149{
150 volatile uchar * pkt;
151 volatile uchar * xp;
152 int len = 0;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200153 volatile ushort *s;
wdenkfe8c2802002-11-03 00:38:21 +0000154
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200155#ifdef CONFIG_MCAST_TFTP
David Updegraff53a5c422007-06-11 10:41:07 -0500156 /* Multicast TFTP.. non-MasterClients do not ACK data. */
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200157 if (Multicast
158 && (TftpState == STATE_DATA)
159 && (MasterClient == 0))
David Updegraff53a5c422007-06-11 10:41:07 -0500160 return;
161#endif
wdenkfe8c2802002-11-03 00:38:21 +0000162 /*
163 * We will always be sending some sort of packet, so
164 * cobble together the packet headers now.
165 */
wdenka3d991b2004-04-15 21:48:45 +0000166 pkt = NetTxPacket + NetEthHdrSize() + IP_HDR_SIZE;
wdenkfe8c2802002-11-03 00:38:21 +0000167
168 switch (TftpState) {
169
170 case STATE_RRQ:
171 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200172 s = (ushort *)pkt;
173 *s++ = htons(TFTP_RRQ);
174 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000175 strcpy ((char *)pkt, tftp_filename);
176 pkt += strlen(tftp_filename) + 1;
177 strcpy ((char *)pkt, "octet");
178 pkt += 5 /*strlen("octet")*/ + 1;
wdenkfbe4b5c2003-10-06 21:55:32 +0000179 strcpy ((char *)pkt, "timeout");
180 pkt += 7 /*strlen("timeout")*/ + 1;
181 sprintf((char *)pkt, "%d", TIMEOUT);
182#ifdef ET_DEBUG
183 printf("send option \"timeout %s\"\n", (char *)pkt);
184#endif
185 pkt += strlen((char *)pkt) + 1;
David Updegraff53a5c422007-06-11 10:41:07 -0500186 /* try for more effic. blk size */
187 pkt += sprintf((char *)pkt,"blksize%c%d%c",
stefano babicef8f2072007-08-21 15:52:33 +0200188 0,TftpBlkSizeOption,0);
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200189#ifdef CONFIG_MCAST_TFTP
David Updegraff53a5c422007-06-11 10:41:07 -0500190 /* Check all preconditions before even trying the option */
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200191 if (!ProhibitMcast
192 && (Bitmap=malloc(Mapsize))
David Updegraff53a5c422007-06-11 10:41:07 -0500193 && eth_get_dev()->mcast) {
194 free(Bitmap);
195 Bitmap=NULL;
196 pkt += sprintf((char *)pkt,"multicast%c%c",0,0);
197 }
198#endif /* CONFIG_MCAST_TFTP */
wdenkfe8c2802002-11-03 00:38:21 +0000199 len = pkt - xp;
200 break;
201
wdenkfbe4b5c2003-10-06 21:55:32 +0000202 case STATE_OACK:
David Updegraff53a5c422007-06-11 10:41:07 -0500203#ifdef CONFIG_MCAST_TFTP
204 /* My turn! Start at where I need blocks I missed.*/
205 if (Multicast)
206 TftpBlock=ext2_find_next_zero_bit(Bitmap,(Mapsize*8),0);
207 /*..falling..*/
208#endif
209 case STATE_DATA:
wdenkfe8c2802002-11-03 00:38:21 +0000210 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200211 s = (ushort *)pkt;
212 *s++ = htons(TFTP_ACK);
213 *s++ = htons(TftpBlock);
214 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000215 len = pkt - xp;
216 break;
217
218 case STATE_TOO_LARGE:
219 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200220 s = (ushort *)pkt;
221 *s++ = htons(TFTP_ERROR);
222 *s++ = htons(3);
223 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000224 strcpy ((char *)pkt, "File too large");
225 pkt += 14 /*strlen("File too large")*/ + 1;
226 len = pkt - xp;
227 break;
228
229 case STATE_BAD_MAGIC:
230 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200231 s = (ushort *)pkt;
232 *s++ = htons(TFTP_ERROR);
233 *s++ = htons(2);
234 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000235 strcpy ((char *)pkt, "File has bad magic");
236 pkt += 18 /*strlen("File has bad magic")*/ + 1;
237 len = pkt - xp;
238 break;
239 }
240
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100241 NetSendUDPPacket(NetServerEther, TftpServerIP, TftpServerPort, TftpOurPort, len);
wdenkfe8c2802002-11-03 00:38:21 +0000242}
243
244
245static void
246TftpHandler (uchar * pkt, unsigned dest, unsigned src, unsigned len)
247{
248 ushort proto;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200249 ushort *s;
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200250 int i;
wdenkfe8c2802002-11-03 00:38:21 +0000251
252 if (dest != TftpOurPort) {
David Updegraff53a5c422007-06-11 10:41:07 -0500253#ifdef CONFIG_MCAST_TFTP
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200254 if (Multicast
David Updegraff53a5c422007-06-11 10:41:07 -0500255 && (!Mcast_port || (dest != Mcast_port)))
256#endif
wdenkfe8c2802002-11-03 00:38:21 +0000257 return;
258 }
259 if (TftpState != STATE_RRQ && src != TftpServerPort) {
260 return;
261 }
262
263 if (len < 2) {
264 return;
265 }
266 len -= 2;
267 /* warning: don't use increment (++) in ntohs() macros!! */
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200268 s = (ushort *)pkt;
269 proto = *s++;
270 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000271 switch (ntohs(proto)) {
272
273 case TFTP_RRQ:
274 case TFTP_WRQ:
275 case TFTP_ACK:
276 break;
277 default:
278 break;
279
wdenkfbe4b5c2003-10-06 21:55:32 +0000280 case TFTP_OACK:
281#ifdef ET_DEBUG
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200282 printf("Got OACK: %s %s\n", pkt, pkt+strlen(pkt)+1);
wdenkfbe4b5c2003-10-06 21:55:32 +0000283#endif
284 TftpState = STATE_OACK;
285 TftpServerPort = src;
Wolfgang Denk60174742007-08-31 10:01:51 +0200286 /*
287 * Check for 'blksize' option.
288 * Careful: "i" is signed, "len" is unsigned, thus
289 * something like "len-8" may give a *huge* number
290 */
291 for (i=0; i+8<len; i++) {
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200292 if (strcmp ((char*)pkt+i,"blksize") == 0) {
293 TftpBlkSize = (unsigned short)
294 simple_strtoul((char*)pkt+i+8,NULL,10);
David Updegraff53a5c422007-06-11 10:41:07 -0500295#ifdef ET_DEBUG
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200296 printf ("Blocksize ack: %s, %d\n",
297 (char*)pkt+i+8,TftpBlkSize);
David Updegraff53a5c422007-06-11 10:41:07 -0500298#endif
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200299 break;
300 }
David Updegraff53a5c422007-06-11 10:41:07 -0500301 }
302#ifdef CONFIG_MCAST_TFTP
303 parse_multicast_oack((char *)pkt,len-1);
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200304 if ((Multicast) && (!MasterClient))
David Updegraff53a5c422007-06-11 10:41:07 -0500305 TftpState = STATE_DATA; /* passive.. */
306 else
307#endif
wdenkfbe4b5c2003-10-06 21:55:32 +0000308 TftpSend (); /* Send ACK */
309 break;
wdenkfe8c2802002-11-03 00:38:21 +0000310 case TFTP_DATA:
311 if (len < 2)
312 return;
313 len -= 2;
314 TftpBlock = ntohs(*(ushort *)pkt);
wdenk3f85ce22004-02-23 16:11:30 +0000315
316 /*
wdenkcd0a9de2004-02-23 20:48:38 +0000317 * RFC1350 specifies that the first data packet will
318 * have sequence number 1. If we receive a sequence
319 * number of 0 this means that there was a wrap
320 * around of the (16 bit) counter.
wdenk3f85ce22004-02-23 16:11:30 +0000321 */
322 if (TftpBlock == 0) {
323 TftpBlockWrap++;
David Updegraff53a5c422007-06-11 10:41:07 -0500324 TftpBlockWrapOffset += TftpBlkSize * TFTP_SEQUENCE_SIZE;
Wolfgang Denkddd5d9d2006-08-14 22:43:13 +0200325 printf ("\n\t %lu MB received\n\t ", TftpBlockWrapOffset>>20);
wdenk3f85ce22004-02-23 16:11:30 +0000326 } else {
327 if (((TftpBlock - 1) % 10) == 0) {
328 putc ('#');
329 } else if ((TftpBlock % (10 * HASHES_PER_LINE)) == 0) {
330 puts ("\n\t ");
331 }
wdenkfe8c2802002-11-03 00:38:21 +0000332 }
333
wdenkfbe4b5c2003-10-06 21:55:32 +0000334#ifdef ET_DEBUG
wdenkfe8c2802002-11-03 00:38:21 +0000335 if (TftpState == STATE_RRQ) {
wdenk4b9206e2004-03-23 22:14:11 +0000336 puts ("Server did not acknowledge timeout option!\n");
wdenkfbe4b5c2003-10-06 21:55:32 +0000337 }
338#endif
339
340 if (TftpState == STATE_RRQ || TftpState == STATE_OACK) {
wdenk3f85ce22004-02-23 16:11:30 +0000341 /* first block received */
wdenkfe8c2802002-11-03 00:38:21 +0000342 TftpState = STATE_DATA;
343 TftpServerPort = src;
344 TftpLastBlock = 0;
wdenk3f85ce22004-02-23 16:11:30 +0000345 TftpBlockWrap = 0;
346 TftpBlockWrapOffset = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000347
David Updegraff53a5c422007-06-11 10:41:07 -0500348#ifdef CONFIG_MCAST_TFTP
349 if (Multicast) { /* start!=1 common if mcast */
350 TftpLastBlock = TftpBlock - 1;
351 } else
352#endif
wdenkfe8c2802002-11-03 00:38:21 +0000353 if (TftpBlock != 1) { /* Assertion */
354 printf ("\nTFTP error: "
wdenk3f85ce22004-02-23 16:11:30 +0000355 "First block is not block 1 (%ld)\n"
wdenkfe8c2802002-11-03 00:38:21 +0000356 "Starting again\n\n",
357 TftpBlock);
358 NetStartAgain ();
359 break;
360 }
361 }
362
363 if (TftpBlock == TftpLastBlock) {
364 /*
365 * Same block again; ignore it.
366 */
367 break;
368 }
369
370 TftpLastBlock = TftpBlock;
371 NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
372
373 store_block (TftpBlock - 1, pkt + 2, len);
374
375 /*
376 * Acknoledge the block just received, which will prompt
377 * the server for the next one.
378 */
David Updegraff53a5c422007-06-11 10:41:07 -0500379#ifdef CONFIG_MCAST_TFTP
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200380 /* if I am the MasterClient, actively calculate what my next
381 * needed block is; else I'm passive; not ACKING
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100382 */
David Updegraff53a5c422007-06-11 10:41:07 -0500383 if (Multicast) {
384 if (len < TftpBlkSize) {
385 TftpEndingBlock = TftpBlock;
386 } else if (MasterClient) {
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200387 TftpBlock = PrevBitmapHole =
David Updegraff53a5c422007-06-11 10:41:07 -0500388 ext2_find_next_zero_bit(
389 Bitmap,
390 (Mapsize*8),
391 PrevBitmapHole);
392 if (TftpBlock > ((Mapsize*8) - 1)) {
393 printf ("tftpfile too big\n");
394 /* try to double it and retry */
395 Mapsize<<=1;
396 mcast_cleanup();
397 NetStartAgain ();
398 return;
399 }
400 TftpLastBlock = TftpBlock;
401 }
402 }
403#endif
wdenkfe8c2802002-11-03 00:38:21 +0000404 TftpSend ();
405
David Updegraff53a5c422007-06-11 10:41:07 -0500406#ifdef CONFIG_MCAST_TFTP
407 if (Multicast) {
408 if (MasterClient && (TftpBlock >= TftpEndingBlock)) {
409 puts ("\nMulticast tftp done\n");
410 mcast_cleanup();
411 NetState = NETLOOP_SUCCESS;
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200412 }
David Updegraff53a5c422007-06-11 10:41:07 -0500413 }
414 else
415#endif
416 if (len < TftpBlkSize) {
wdenkfe8c2802002-11-03 00:38:21 +0000417 /*
418 * We received the whole thing. Try to
419 * run it.
420 */
421 puts ("\ndone\n");
422 NetState = NETLOOP_SUCCESS;
423 }
424 break;
425
426 case TFTP_ERROR:
427 printf ("\nTFTP error: '%s' (%d)\n",
428 pkt + 2, ntohs(*(ushort *)pkt));
429 puts ("Starting again\n\n");
David Updegraff53a5c422007-06-11 10:41:07 -0500430#ifdef CONFIG_MCAST_TFTP
431 mcast_cleanup();
432#endif
wdenkfe8c2802002-11-03 00:38:21 +0000433 NetStartAgain ();
434 break;
435 }
436}
437
438
439static void
440TftpTimeout (void)
441{
wdenke0ac62d2003-08-17 18:55:18 +0000442 if (++TftpTimeoutCount > TIMEOUT_COUNT) {
wdenkfe8c2802002-11-03 00:38:21 +0000443 puts ("\nRetry count exceeded; starting again\n");
David Updegraff53a5c422007-06-11 10:41:07 -0500444#ifdef CONFIG_MCAST_TFTP
445 mcast_cleanup();
446#endif
wdenkfe8c2802002-11-03 00:38:21 +0000447 NetStartAgain ();
448 } else {
449 puts ("T ");
450 NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
451 TftpSend ();
452 }
453}
454
455
456void
457TftpStart (void)
458{
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200459#ifdef CONFIG_TFTP_PORT
460 char *ep; /* Environment pointer */
461#endif
462
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100463 TftpServerIP = NetServerIP;
wdenkfe8c2802002-11-03 00:38:21 +0000464 if (BootFile[0] == '\0') {
wdenkfe8c2802002-11-03 00:38:21 +0000465 sprintf(default_filename, "%02lX%02lX%02lX%02lX.img",
Wolfgang Denkc43352c2005-08-04 01:09:44 +0200466 NetOurIP & 0xFF,
467 (NetOurIP >> 8) & 0xFF,
468 (NetOurIP >> 16) & 0xFF,
469 (NetOurIP >> 24) & 0xFF );
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100470
471 strncpy(tftp_filename, default_filename, MAX_LEN);
472 tftp_filename[MAX_LEN-1] = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000473
474 printf ("*** Warning: no boot file name; using '%s'\n",
475 tftp_filename);
476 } else {
Jean-Christophe PLAGNIOL-VILLARD38cc09c2008-02-14 08:02:12 +0100477 char *p = strchr (BootFile, ':');
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100478
479 if (p == NULL) {
480 strncpy(tftp_filename, BootFile, MAX_LEN);
481 tftp_filename[MAX_LEN-1] = 0;
482 } else {
483 *p++ = '\0';
484 TftpServerIP = string_to_ip (BootFile);
485 strncpy(tftp_filename, p, MAX_LEN);
486 tftp_filename[MAX_LEN-1] = 0;
487 }
wdenkfe8c2802002-11-03 00:38:21 +0000488 }
489
wdenk5bb226e2003-11-17 21:14:37 +0000490#if defined(CONFIG_NET_MULTI)
491 printf ("Using %s device\n", eth_get_name());
492#endif
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100493 puts ("TFTP from server "); print_IPaddr (TftpServerIP);
wdenkfe8c2802002-11-03 00:38:21 +0000494 puts ("; our IP address is "); print_IPaddr (NetOurIP);
495
496 /* Check if we need to send across this subnet */
497 if (NetOurGatewayIP && NetOurSubnetMask) {
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100498 IPaddr_t OurNet = NetOurIP & NetOurSubnetMask;
499 IPaddr_t ServerNet = TftpServerIP & NetOurSubnetMask;
wdenkfe8c2802002-11-03 00:38:21 +0000500
501 if (OurNet != ServerNet) {
502 puts ("; sending through gateway ");
503 print_IPaddr (NetOurGatewayIP) ;
504 }
505 }
506 putc ('\n');
507
508 printf ("Filename '%s'.", tftp_filename);
509
510 if (NetBootFileSize) {
511 printf (" Size is 0x%x Bytes = ", NetBootFileSize<<9);
512 print_size (NetBootFileSize<<9, "");
513 }
514
515 putc ('\n');
516
517 printf ("Load address: 0x%lx\n", load_addr);
518
519 puts ("Loading: *\b");
520
521 NetSetTimeout (TIMEOUT * CFG_HZ, TftpTimeout);
522 NetSetHandler (TftpHandler);
523
524 TftpServerPort = WELL_KNOWN_PORT;
525 TftpTimeoutCount = 0;
526 TftpState = STATE_RRQ;
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200527 /* Use a pseudo-random port unless a specific port is set */
wdenkfe8c2802002-11-03 00:38:21 +0000528 TftpOurPort = 1024 + (get_timer(0) % 3072);
David Updegraff53a5c422007-06-11 10:41:07 -0500529
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200530#ifdef CONFIG_TFTP_PORT
Wolfgang Denk28cb9372005-09-24 23:25:46 +0200531 if ((ep = getenv("tftpdstp")) != NULL) {
532 TftpServerPort = simple_strtol(ep, NULL, 10);
533 }
534 if ((ep = getenv("tftpsrcp")) != NULL) {
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200535 TftpOurPort= simple_strtol(ep, NULL, 10);
536 }
537#endif
wdenkfbe4b5c2003-10-06 21:55:32 +0000538 TftpBlock = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000539
wdenk73a8b272003-06-05 19:27:42 +0000540 /* zero out server ether in case the server ip has changed */
541 memset(NetServerEther, 0, 6);
David Updegraff53a5c422007-06-11 10:41:07 -0500542 /* Revert TftpBlkSize to dflt */
543 TftpBlkSize = TFTP_BLOCK_SIZE;
544#ifdef CONFIG_MCAST_TFTP
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100545 mcast_cleanup();
David Updegraff53a5c422007-06-11 10:41:07 -0500546#endif
wdenk73a8b272003-06-05 19:27:42 +0000547
wdenkfe8c2802002-11-03 00:38:21 +0000548 TftpSend ();
549}
550
David Updegraff53a5c422007-06-11 10:41:07 -0500551#ifdef CONFIG_MCAST_TFTP
552/* Credits: atftp project.
553 */
554
555/* pick up BcastAddr, Port, and whether I am [now] the master-client. *
556 * Frame:
557 * +-------+-----------+---+-------~~-------+---+
558 * | opc | multicast | 0 | addr, port, mc | 0 |
559 * +-------+-----------+---+-------~~-------+---+
560 * The multicast addr/port becomes what I listen to, and if 'mc' is '1' then
561 * I am the new master-client so must send ACKs to DataBlocks. If I am not
562 * master-client, I'm a passive client, gathering what DataBlocks I may and
563 * making note of which ones I got in my bitmask.
564 * In theory, I never go from master->passive..
565 * .. this comes in with pkt already pointing just past opc
566 */
567static void parse_multicast_oack(char *pkt, int len)
568{
569 int i;
570 IPaddr_t addr;
571 char *mc_adr, *port, *mc;
572
573 mc_adr=port=mc=NULL;
574 /* march along looking for 'multicast\0', which has to start at least
575 * 14 bytes back from the end.
576 */
577 for (i=0;i<len-14;i++)
578 if (strcmp (pkt+i,"multicast") == 0)
579 break;
580 if (i >= (len-14)) /* non-Multicast OACK, ign. */
581 return;
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200582
David Updegraff53a5c422007-06-11 10:41:07 -0500583 i+=10; /* strlen multicast */
584 mc_adr = pkt+i;
585 for (;i<len;i++) {
586 if (*(pkt+i) == ',') {
587 *(pkt+i) = '\0';
588 if (port) {
589 mc = pkt+i+1;
590 break;
591 } else {
592 port = pkt+i+1;
593 }
594 }
595 }
596 if (!port || !mc_adr || !mc ) return;
597 if (Multicast && MasterClient) {
598 printf ("I got a OACK as master Client, WRONG!\n");
599 return;
600 }
601 /* ..I now accept packets destined for this MCAST addr, port */
602 if (!Multicast) {
603 if (Bitmap) {
604 printf ("Internal failure! no mcast.\n");
605 free(Bitmap);
606 Bitmap=NULL;
607 ProhibitMcast=1;
608 return ;
609 }
610 /* I malloc instead of pre-declare; so that if the file ends
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200611 * up being too big for this bitmap I can retry
612 */
David Updegraff53a5c422007-06-11 10:41:07 -0500613 if (!(Bitmap = malloc (Mapsize))) {
614 printf ("No Bitmap, no multicast. Sorry.\n");
615 ProhibitMcast=1;
616 return;
617 }
618 memset (Bitmap,0,Mapsize);
619 PrevBitmapHole = 0;
620 Multicast = 1;
621 }
622 addr = string_to_ip(mc_adr);
623 if (Mcast_addr != addr) {
624 if (Mcast_addr)
625 eth_mcast_join(Mcast_addr, 0);
626 if (eth_mcast_join(Mcast_addr=addr, 1)) {
627 printf ("Fail to set mcast, revert to TFTP\n");
628 ProhibitMcast=1;
629 mcast_cleanup();
630 NetStartAgain();
631 }
632 }
633 MasterClient = (unsigned char)simple_strtoul((char *)mc,NULL,10);
634 Mcast_port = (unsigned short)simple_strtoul(port,NULL,10);
635 printf ("Multicast: %s:%d [%d]\n", mc_adr, Mcast_port, MasterClient);
636 return;
637}
638
639#endif /* Multicast TFTP */
640
Jon Loeliger30b52df2007-08-15 11:55:35 -0500641#endif