1 /*
2 * Copyright 1994, 1995, 2000 Neil Russell.
3 * (See License)
4 * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
5 * Copyright 2011 Comelit Group SpA,
6 * Luca Ceresoli <luca.ceresoli@comelit.it>
7 */
8
9 #include <common.h>
10 #include <command.h>
11 #include <efi_loader.h>
12 #include <mapmem.h>
13 #include <net.h>
14 #include <net/tftp.h>
15 #include "bootp.h"
16 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
17 #include <flash.h>
18 #endif
19
20 DECLARE_GLOBAL_DATA_PTR;
21
22 /* Well known TFTP port # */
23 #define WELL_KNOWN_PORT 69
24 /* Millisecs to timeout for lost pkt */
25 #define TIMEOUT 5000UL
26 #ifndef CONFIG_NET_RETRY_COUNT
27 /* # of timeouts before giving up */
28 # define TIMEOUT_COUNT 10
29 #else
30 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
31 #endif
32 /* Number of "loading" hashes per line (for checking the image size) */
33 #define HASHES_PER_LINE 65
34
35 /*
36 * TFTP operations.
37 */
38 #define TFTP_RRQ 1
39 #define TFTP_WRQ 2
40 #define TFTP_DATA 3
41 #define TFTP_ACK 4
42 #define TFTP_ERROR 5
43 #define TFTP_OACK 6
44
45 static ulong timeout_ms = TIMEOUT;
46 static int timeout_count_max = TIMEOUT_COUNT;
47 static ulong time_start; /* Record time we started tftp */
48
49 /*
50 * These globals govern the timeout behavior when attempting a connection to a
51 * TFTP server. tftp_timeout_ms specifies the number of milliseconds to
52 * wait for the server to respond to initial connection. Second global,
53 * tftp_timeout_count_max, gives the number of such connection retries.
54 * tftp_timeout_count_max must be non-negative and tftp_timeout_ms must be
55 * positive. The globals are meant to be set (and restored) by code needing
56 * non-standard timeout behavior when initiating a TFTP transfer.
57 */
58 ulong tftp_timeout_ms = TIMEOUT;
59 int tftp_timeout_count_max = TIMEOUT_COUNT;
60
61 enum {
62 TFTP_ERR_UNDEFINED = 0,
63 TFTP_ERR_FILE_NOT_FOUND = 1,
64 TFTP_ERR_ACCESS_DENIED = 2,
65 TFTP_ERR_DISK_FULL = 3,
66 TFTP_ERR_UNEXPECTED_OPCODE = 4,
67 TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
68 TFTP_ERR_FILE_ALREADY_EXISTS = 6,
69 };
70
71 static struct in_addr tftp_remote_ip;
72 /* The UDP port at their end */
73 static int tftp_remote_port;
74 /* The UDP port at our end */
75 static int tftp_our_port;
76 static int timeout_count;
77 /* packet sequence number */
78 static ulong tftp_cur_block;
79 /* last packet sequence number received */
80 static ulong tftp_prev_block;
81 /* count of sequence number wraparounds */
82 static ulong tftp_block_wrap;
83 /* memory offset due to wrapping */
84 static ulong tftp_block_wrap_offset;
85 static int tftp_state;
86 static ulong tftp_load_addr;
87 #ifdef CONFIG_LMB
88 static ulong tftp_load_size;
89 #endif
90 #ifdef CONFIG_TFTP_TSIZE
91 /* The file size reported by the server */
92 static int tftp_tsize;
93 /* The number of hashes we printed */
94 static short tftp_tsize_num_hash;
95 #endif
96 #ifdef CONFIG_CMD_TFTPPUT
97 /* 1 if writing, else 0 */
98 static int tftp_put_active;
99 /* 1 if we have sent the last block */
100 static int tftp_put_final_block_sent;
101 #else
102 #define tftp_put_active 0
103 #endif
104
105 #define STATE_SEND_RRQ 1
106 #define STATE_DATA 2
107 #define STATE_TOO_LARGE 3
108 #define STATE_BAD_MAGIC 4
109 #define STATE_OACK 5
110 #define STATE_RECV_WRQ 6
111 #define STATE_SEND_WRQ 7
112
113 /* default TFTP block size */
114 #define TFTP_BLOCK_SIZE 512
115 /* sequence number is 16 bit */
116 #define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
117
118 #define DEFAULT_NAME_LEN (8 + 4 + 1)
119 static char default_filename[DEFAULT_NAME_LEN];
120
121 #ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
122 #define MAX_LEN 128
123 #else
124 #define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
125 #endif
126
127 static char tftp_filename[MAX_LEN];
128
129 /* 512 is poor choice for ethernet, MTU is typically 1500.
130 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
131 * almost-MTU block sizes. At least try... fall back to 512 if need be.
132 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
133 */
134 #ifdef CONFIG_TFTP_BLOCKSIZE
135 #define TFTP_MTU_BLOCKSIZE CONFIG_TFTP_BLOCKSIZE
136 #else
137 #define TFTP_MTU_BLOCKSIZE 1468
138 #endif
139
140 static unsigned short tftp_block_size = TFTP_BLOCK_SIZE;
141 static unsigned short tftp_block_size_option = TFTP_MTU_BLOCKSIZE;
142
store_block(int block,uchar * src,unsigned int len)143 static inline int store_block(int block, uchar *src, unsigned int len)
144 {
145 ulong offset = block * tftp_block_size + tftp_block_wrap_offset;
146 ulong newsize = offset + len;
147 ulong store_addr = tftp_load_addr + offset;
148 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
149 int i, rc = 0;
150
151 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
152 /* start address in flash? */
153 if (flash_info[i].flash_id == FLASH_UNKNOWN)
154 continue;
155 if (store_addr >= flash_info[i].start[0]) {
156 rc = 1;
157 break;
158 }
159 }
160
161 if (rc) { /* Flash is destination for this packet */
162 rc = flash_write((char *)src, store_addr, len);
163 if (rc) {
164 flash_perror(rc);
165 return rc;
166 }
167 } else
168 #endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
169 {
170 void *ptr;
171
172 #ifdef CONFIG_LMB
173 if (store_addr < tftp_load_addr ||
174 store_addr + len > tftp_load_addr + tftp_load_size) {
175 puts("\nTFTP error: ");
176 puts("trying to overwrite reserved memory...\n");
177 return -1;
178 }
179 #endif
180 ptr = map_sysmem(store_addr, len);
181 memcpy(ptr, src, len);
182 unmap_sysmem(ptr);
183 }
184
185 if (net_boot_file_size < newsize)
186 net_boot_file_size = newsize;
187
188 return 0;
189 }
190
191 /* Clear our state ready for a new transfer */
new_transfer(void)192 static void new_transfer(void)
193 {
194 tftp_prev_block = 0;
195 tftp_block_wrap = 0;
196 tftp_block_wrap_offset = 0;
197 #ifdef CONFIG_CMD_TFTPPUT
198 tftp_put_final_block_sent = 0;
199 #endif
200 }
201
202 #ifdef CONFIG_CMD_TFTPPUT
203 /**
204 * Load the next block from memory to be sent over tftp.
205 *
206 * @param block Block number to send
207 * @param dst Destination buffer for data
208 * @param len Number of bytes in block (this one and every other)
209 * @return number of bytes loaded
210 */
load_block(unsigned block,uchar * dst,unsigned len)211 static int load_block(unsigned block, uchar *dst, unsigned len)
212 {
213 /* We may want to get the final block from the previous set */
214 ulong offset = ((int)block - 1) * len + tftp_block_wrap_offset;
215 ulong tosend = len;
216
217 tosend = min(net_boot_file_size - offset, tosend);
218 (void)memcpy(dst, (void *)(save_addr + offset), tosend);
219 debug("%s: block=%d, offset=%ld, len=%d, tosend=%ld\n", __func__,
220 block, offset, len, tosend);
221 return tosend;
222 }
223 #endif
224
225 static void tftp_send(void);
226 static void tftp_timeout_handler(void);
227
228 /**********************************************************************/
229
show_block_marker(void)230 static void show_block_marker(void)
231 {
232 #ifdef CONFIG_TFTP_TSIZE
233 if (tftp_tsize) {
234 ulong pos = tftp_cur_block * tftp_block_size +
235 tftp_block_wrap_offset;
236 if (pos > tftp_tsize)
237 pos = tftp_tsize;
238
239 while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
240 putc('#');
241 tftp_tsize_num_hash++;
242 }
243 } else
244 #endif
245 {
246 if (((tftp_cur_block - 1) % 10) == 0)
247 putc('#');
248 else if ((tftp_cur_block % (10 * HASHES_PER_LINE)) == 0)
249 puts("\n\t ");
250 }
251 }
252
253 /**
254 * restart the current transfer due to an error
255 *
256 * @param msg Message to print for user
257 */
restart(const char * msg)258 static void restart(const char *msg)
259 {
260 printf("\n%s; starting again\n", msg);
261 net_start_again();
262 }
263
264 /*
265 * Check if the block number has wrapped, and update progress
266 *
267 * TODO: The egregious use of global variables in this file should be tidied.
268 */
update_block_number(void)269 static void update_block_number(void)
270 {
271 /*
272 * RFC1350 specifies that the first data packet will
273 * have sequence number 1. If we receive a sequence
274 * number of 0 this means that there was a wrap
275 * around of the (16 bit) counter.
276 */
277 if (tftp_cur_block == 0 && tftp_prev_block != 0) {
278 tftp_block_wrap++;
279 tftp_block_wrap_offset += tftp_block_size * TFTP_SEQUENCE_SIZE;
280 timeout_count = 0; /* we've done well, reset the timeout */
281 } else {
282 show_block_marker();
283 }
284 }
285
286 /* The TFTP get or put is complete */
tftp_complete(void)287 static void tftp_complete(void)
288 {
289 #ifdef CONFIG_TFTP_TSIZE
290 /* Print hash marks for the last packet received */
291 while (tftp_tsize && tftp_tsize_num_hash < 49) {
292 putc('#');
293 tftp_tsize_num_hash++;
294 }
295 puts(" ");
296 print_size(tftp_tsize, "");
297 #endif
298 time_start = get_timer(time_start);
299 if (time_start > 0) {
300 puts("\n\t "); /* Line up with "Loading: " */
301 print_size(net_boot_file_size /
302 time_start * 1000, "/s");
303 }
304 puts("\ndone\n");
305 net_set_state(NETLOOP_SUCCESS);
306 }
307
tftp_send(void)308 static void tftp_send(void)
309 {
310 uchar *pkt;
311 uchar *xp;
312 int len = 0;
313 ushort *s;
314
315 /*
316 * We will always be sending some sort of packet, so
317 * cobble together the packet headers now.
318 */
319 pkt = net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
320
321 switch (tftp_state) {
322 case STATE_SEND_RRQ:
323 case STATE_SEND_WRQ:
324 xp = pkt;
325 s = (ushort *)pkt;
326 #ifdef CONFIG_CMD_TFTPPUT
327 *s++ = htons(tftp_state == STATE_SEND_RRQ ? TFTP_RRQ :
328 TFTP_WRQ);
329 #else
330 *s++ = htons(TFTP_RRQ);
331 #endif
332 pkt = (uchar *)s;
333 strcpy((char *)pkt, tftp_filename);
334 pkt += strlen(tftp_filename) + 1;
335 strcpy((char *)pkt, "octet");
336 pkt += 5 /*strlen("octet")*/ + 1;
337 strcpy((char *)pkt, "timeout");
338 pkt += 7 /*strlen("timeout")*/ + 1;
339 sprintf((char *)pkt, "%lu", timeout_ms / 1000);
340 debug("send option \"timeout %s\"\n", (char *)pkt);
341 pkt += strlen((char *)pkt) + 1;
342 #ifdef CONFIG_TFTP_TSIZE
343 pkt += sprintf((char *)pkt, "tsize%c%u%c",
344 0, net_boot_file_size, 0);
345 #endif
346 /* try for more effic. blk size */
347 pkt += sprintf((char *)pkt, "blksize%c%d%c",
348 0, tftp_block_size_option, 0);
349 len = pkt - xp;
350 break;
351
352 case STATE_OACK:
353
354 case STATE_RECV_WRQ:
355 case STATE_DATA:
356 xp = pkt;
357 s = (ushort *)pkt;
358 s[0] = htons(TFTP_ACK);
359 s[1] = htons(tftp_cur_block);
360 pkt = (uchar *)(s + 2);
361 #ifdef CONFIG_CMD_TFTPPUT
362 if (tftp_put_active) {
363 int toload = tftp_block_size;
364 int loaded = load_block(tftp_cur_block, pkt, toload);
365
366 s[0] = htons(TFTP_DATA);
367 pkt += loaded;
368 tftp_put_final_block_sent = (loaded < toload);
369 }
370 #endif
371 len = pkt - xp;
372 break;
373
374 case STATE_TOO_LARGE:
375 xp = pkt;
376 s = (ushort *)pkt;
377 *s++ = htons(TFTP_ERROR);
378 *s++ = htons(3);
379
380 pkt = (uchar *)s;
381 strcpy((char *)pkt, "File too large");
382 pkt += 14 /*strlen("File too large")*/ + 1;
383 len = pkt - xp;
384 break;
385
386 case STATE_BAD_MAGIC:
387 xp = pkt;
388 s = (ushort *)pkt;
389 *s++ = htons(TFTP_ERROR);
390 *s++ = htons(2);
391 pkt = (uchar *)s;
392 strcpy((char *)pkt, "File has bad magic");
393 pkt += 18 /*strlen("File has bad magic")*/ + 1;
394 len = pkt - xp;
395 break;
396 }
397
398 net_send_udp_packet(net_server_ethaddr, tftp_remote_ip,
399 tftp_remote_port, tftp_our_port, len);
400 }
401
402 #ifdef CONFIG_CMD_TFTPPUT
icmp_handler(unsigned type,unsigned code,unsigned dest,struct in_addr sip,unsigned src,uchar * pkt,unsigned len)403 static void icmp_handler(unsigned type, unsigned code, unsigned dest,
404 struct in_addr sip, unsigned src, uchar *pkt,
405 unsigned len)
406 {
407 if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
408 /* Oh dear the other end has gone away */
409 restart("TFTP server died");
410 }
411 }
412 #endif
413
tftp_handler(uchar * pkt,unsigned dest,struct in_addr sip,unsigned src,unsigned len)414 static void tftp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
415 unsigned src, unsigned len)
416 {
417 __be16 proto;
418 __be16 *s;
419 int i;
420
421 if (dest != tftp_our_port) {
422 return;
423 }
424 if (tftp_state != STATE_SEND_RRQ && src != tftp_remote_port &&
425 tftp_state != STATE_RECV_WRQ && tftp_state != STATE_SEND_WRQ)
426 return;
427
428 if (len < 2)
429 return;
430 len -= 2;
431 /* warning: don't use increment (++) in ntohs() macros!! */
432 s = (__be16 *)pkt;
433 proto = *s++;
434 pkt = (uchar *)s;
435 switch (ntohs(proto)) {
436 case TFTP_RRQ:
437 break;
438
439 case TFTP_ACK:
440 #ifdef CONFIG_CMD_TFTPPUT
441 if (tftp_put_active) {
442 if (tftp_put_final_block_sent) {
443 tftp_complete();
444 } else {
445 /*
446 * Move to the next block. We want our block
447 * count to wrap just like the other end!
448 */
449 int block = ntohs(*s);
450 int ack_ok = (tftp_cur_block == block);
451
452 tftp_cur_block = (unsigned short)(block + 1);
453 update_block_number();
454 if (ack_ok)
455 tftp_send(); /* Send next data block */
456 }
457 }
458 #endif
459 break;
460
461 default:
462 break;
463
464 #ifdef CONFIG_CMD_TFTPSRV
465 case TFTP_WRQ:
466 debug("Got WRQ\n");
467 tftp_remote_ip = sip;
468 tftp_remote_port = src;
469 tftp_our_port = 1024 + (get_timer(0) % 3072);
470 new_transfer();
471 tftp_send(); /* Send ACK(0) */
472 break;
473 #endif
474
475 case TFTP_OACK:
476 debug("Got OACK: %s %s\n",
477 pkt, pkt + strlen((char *)pkt) + 1);
478 tftp_state = STATE_OACK;
479 tftp_remote_port = src;
480 /*
481 * Check for 'blksize' option.
482 * Careful: "i" is signed, "len" is unsigned, thus
483 * something like "len-8" may give a *huge* number
484 */
485 for (i = 0; i+8 < len; i++) {
486 if (strcmp((char *)pkt + i, "blksize") == 0) {
487 tftp_block_size = (unsigned short)
488 simple_strtoul((char *)pkt + i + 8,
489 NULL, 10);
490 debug("Blocksize ack: %s, %d\n",
491 (char *)pkt + i + 8, tftp_block_size);
492 }
493 #ifdef CONFIG_TFTP_TSIZE
494 if (strcmp((char *)pkt+i, "tsize") == 0) {
495 tftp_tsize = simple_strtoul((char *)pkt + i + 6,
496 NULL, 10);
497 debug("size = %s, %d\n",
498 (char *)pkt + i + 6, tftp_tsize);
499 }
500 #endif
501 }
502 #ifdef CONFIG_CMD_TFTPPUT
503 if (tftp_put_active) {
504 /* Get ready to send the first block */
505 tftp_state = STATE_DATA;
506 tftp_cur_block++;
507 }
508 #endif
509 tftp_send(); /* Send ACK or first data block */
510 break;
511 case TFTP_DATA:
512 if (len < 2)
513 return;
514 len -= 2;
515 tftp_cur_block = ntohs(*(__be16 *)pkt);
516
517 update_block_number();
518
519 if (tftp_state == STATE_SEND_RRQ)
520 debug("Server did not acknowledge timeout option!\n");
521
522 if (tftp_state == STATE_SEND_RRQ || tftp_state == STATE_OACK ||
523 tftp_state == STATE_RECV_WRQ) {
524 /* first block received */
525 tftp_state = STATE_DATA;
526 tftp_remote_port = src;
527 new_transfer();
528
529 if (tftp_cur_block != 1) { /* Assertion */
530 puts("\nTFTP error: ");
531 printf("First block is not block 1 (%ld)\n",
532 tftp_cur_block);
533 puts("Starting again\n\n");
534 net_start_again();
535 break;
536 }
537 }
538
539 if (tftp_cur_block == tftp_prev_block) {
540 /* Same block again; ignore it. */
541 break;
542 }
543
544 tftp_prev_block = tftp_cur_block;
545 timeout_count_max = tftp_timeout_count_max;
546 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
547
548 if (store_block(tftp_cur_block - 1, pkt + 2, len)) {
549 eth_halt();
550 net_set_state(NETLOOP_FAIL);
551 break;
552 }
553
554 /*
555 * Acknowledge the block just received, which will prompt
556 * the remote for the next one.
557 */
558 tftp_send();
559
560 if (len < tftp_block_size)
561 tftp_complete();
562 break;
563
564 case TFTP_ERROR:
565 printf("\nTFTP error: '%s' (%d)\n",
566 pkt + 2, ntohs(*(__be16 *)pkt));
567
568 switch (ntohs(*(__be16 *)pkt)) {
569 case TFTP_ERR_FILE_NOT_FOUND:
570 case TFTP_ERR_ACCESS_DENIED:
571 puts("Not retrying...\n");
572 eth_halt();
573 net_set_state(NETLOOP_FAIL);
574 break;
575 case TFTP_ERR_UNDEFINED:
576 case TFTP_ERR_DISK_FULL:
577 case TFTP_ERR_UNEXPECTED_OPCODE:
578 case TFTP_ERR_UNKNOWN_TRANSFER_ID:
579 case TFTP_ERR_FILE_ALREADY_EXISTS:
580 default:
581 puts("Starting again\n\n");
582 net_start_again();
583 break;
584 }
585 break;
586 }
587 }
588
589
tftp_timeout_handler(void)590 static void tftp_timeout_handler(void)
591 {
592 if (++timeout_count > timeout_count_max) {
593 restart("Retry count exceeded");
594 } else {
595 puts("T ");
596 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
597 if (tftp_state != STATE_RECV_WRQ)
598 tftp_send();
599 }
600 }
601
602 /* Initialize tftp_load_addr and tftp_load_size from load_addr and lmb */
tftp_init_load_addr(void)603 static int tftp_init_load_addr(void)
604 {
605 #ifdef CONFIG_LMB
606 struct lmb lmb;
607 phys_size_t max_size;
608
609 lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
610
611 max_size = lmb_get_free_size(&lmb, load_addr);
612 if (!max_size)
613 return -1;
614
615 tftp_load_size = max_size;
616 #endif
617 tftp_load_addr = load_addr;
618 return 0;
619 }
620
tftp_start(enum proto_t protocol)621 void tftp_start(enum proto_t protocol)
622 {
623 #if CONFIG_NET_TFTP_VARS
624 char *ep; /* Environment pointer */
625
626 /*
627 * Allow the user to choose TFTP blocksize and timeout.
628 * TFTP protocol has a minimal timeout of 1 second.
629 */
630
631 ep = env_get("tftpblocksize");
632 if (ep != NULL)
633 tftp_block_size_option = simple_strtol(ep, NULL, 10);
634
635 ep = env_get("tftptimeout");
636 if (ep != NULL)
637 timeout_ms = simple_strtol(ep, NULL, 10);
638
639 if (timeout_ms < 1000) {
640 printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
641 timeout_ms);
642 timeout_ms = 1000;
643 }
644
645 ep = env_get("tftptimeoutcountmax");
646 if (ep != NULL)
647 tftp_timeout_count_max = simple_strtol(ep, NULL, 10);
648
649 if (tftp_timeout_count_max < 0) {
650 printf("TFTP timeout count max (%d ms) negative, set to 0\n",
651 tftp_timeout_count_max);
652 tftp_timeout_count_max = 0;
653 }
654 #endif
655
656 debug("TFTP blocksize = %i, timeout = %ld ms\n",
657 tftp_block_size_option, timeout_ms);
658
659 tftp_remote_ip = net_server_ip;
660 if (!net_parse_bootfile(&tftp_remote_ip, tftp_filename, MAX_LEN)) {
661 sprintf(default_filename, "%02X%02X%02X%02X.img",
662 net_ip.s_addr & 0xFF,
663 (net_ip.s_addr >> 8) & 0xFF,
664 (net_ip.s_addr >> 16) & 0xFF,
665 (net_ip.s_addr >> 24) & 0xFF);
666
667 strncpy(tftp_filename, default_filename, DEFAULT_NAME_LEN);
668 tftp_filename[DEFAULT_NAME_LEN - 1] = 0;
669
670 printf("*** Warning: no boot file name; using '%s'\n",
671 tftp_filename);
672 }
673
674 printf("Using %s device\n", eth_get_name());
675 printf("TFTP %s server %pI4; our IP address is %pI4",
676 #ifdef CONFIG_CMD_TFTPPUT
677 protocol == TFTPPUT ? "to" : "from",
678 #else
679 "from",
680 #endif
681 &tftp_remote_ip, &net_ip);
682
683 /* Check if we need to send across this subnet */
684 if (net_gateway.s_addr && net_netmask.s_addr) {
685 struct in_addr our_net;
686 struct in_addr remote_net;
687
688 our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
689 remote_net.s_addr = tftp_remote_ip.s_addr & net_netmask.s_addr;
690 if (our_net.s_addr != remote_net.s_addr)
691 printf("; sending through gateway %pI4", &net_gateway);
692 }
693 putc('\n');
694
695 printf("Filename '%s'.", tftp_filename);
696
697 if (net_boot_file_expected_size_in_blocks) {
698 printf(" Size is 0x%x Bytes = ",
699 net_boot_file_expected_size_in_blocks << 9);
700 print_size(net_boot_file_expected_size_in_blocks << 9, "");
701 }
702
703 putc('\n');
704 #ifdef CONFIG_CMD_TFTPPUT
705 tftp_put_active = (protocol == TFTPPUT);
706 if (tftp_put_active) {
707 printf("Save address: 0x%lx\n", save_addr);
708 printf("Save size: 0x%lx\n", save_size);
709 net_boot_file_size = save_size;
710 puts("Saving: *\b");
711 tftp_state = STATE_SEND_WRQ;
712 new_transfer();
713 } else
714 #endif
715 {
716 if (tftp_init_load_addr()) {
717 eth_halt();
718 net_set_state(NETLOOP_FAIL);
719 puts("\nTFTP error: ");
720 puts("trying to overwrite reserved memory...\n");
721 return;
722 }
723 printf("Load address: 0x%lx\n", tftp_load_addr);
724 puts("Loading: *\b");
725 tftp_state = STATE_SEND_RRQ;
726 #ifdef CONFIG_CMD_BOOTEFI
727 efi_set_bootdev("Net", "", tftp_filename);
728 #endif
729 }
730
731 time_start = get_timer(0);
732 timeout_count_max = tftp_timeout_count_max;
733
734 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
735 net_set_udp_handler(tftp_handler);
736 #ifdef CONFIG_CMD_TFTPPUT
737 net_set_icmp_handler(icmp_handler);
738 #endif
739 tftp_remote_port = WELL_KNOWN_PORT;
740 timeout_count = 0;
741 /* Use a pseudo-random port unless a specific port is set */
742 tftp_our_port = 1024 + (get_timer(0) % 3072);
743
744 #ifdef CONFIG_TFTP_PORT
745 ep = env_get("tftpdstp");
746 if (ep != NULL)
747 tftp_remote_port = simple_strtol(ep, NULL, 10);
748 ep = env_get("tftpsrcp");
749 if (ep != NULL)
750 tftp_our_port = simple_strtol(ep, NULL, 10);
751 #endif
752 tftp_cur_block = 0;
753
754 /* zero out server ether in case the server ip has changed */
755 memset(net_server_ethaddr, 0, 6);
756 /* Revert tftp_block_size to dflt */
757 tftp_block_size = TFTP_BLOCK_SIZE;
758 #ifdef CONFIG_TFTP_TSIZE
759 tftp_tsize = 0;
760 tftp_tsize_num_hash = 0;
761 #endif
762
763 tftp_send();
764 }
765
766 #ifdef CONFIG_CMD_TFTPSRV
tftp_start_server(void)767 void tftp_start_server(void)
768 {
769 tftp_filename[0] = 0;
770
771 if (tftp_init_load_addr()) {
772 eth_halt();
773 net_set_state(NETLOOP_FAIL);
774 puts("\nTFTP error: trying to overwrite reserved memory...\n");
775 return;
776 }
777 printf("Using %s device\n", eth_get_name());
778 printf("Listening for TFTP transfer on %pI4\n", &net_ip);
779 printf("Load address: 0x%lx\n", tftp_load_addr);
780
781 puts("Loading: *\b");
782
783 timeout_count_max = tftp_timeout_count_max;
784 timeout_count = 0;
785 timeout_ms = TIMEOUT;
786 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
787
788 /* Revert tftp_block_size to dflt */
789 tftp_block_size = TFTP_BLOCK_SIZE;
790 tftp_cur_block = 0;
791 tftp_our_port = WELL_KNOWN_PORT;
792
793 #ifdef CONFIG_TFTP_TSIZE
794 tftp_tsize = 0;
795 tftp_tsize_num_hash = 0;
796 #endif
797
798 tftp_state = STATE_RECV_WRQ;
799 net_set_udp_handler(tftp_handler);
800
801 /* zero out server ether in case the server ip has changed */
802 memset(net_server_ethaddr, 0, 6);
803 }
804 #endif /* CONFIG_CMD_TFTPSRV */
805
806