2 * Copyright 1994, 1995, 2000 Neil Russell.
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>
10 #include <efi_loader.h>
19 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
23 DECLARE_GLOBAL_DATA_PTR;
25 /* Well known TFTP port # */
26 #define WELL_KNOWN_PORT 69
27 /* Millisecs to timeout for lost pkt */
28 #define TIMEOUT 5000UL
29 #ifndef CONFIG_NET_RETRY_COUNT
30 /* # of timeouts before giving up */
31 # define TIMEOUT_COUNT 10
33 # define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
35 /* Number of "loading" hashes per line (for checking the image size) */
36 #define HASHES_PER_LINE 65
48 static ulong timeout_ms = TIMEOUT;
49 static int timeout_count_max = TIMEOUT_COUNT;
50 static ulong time_start; /* Record time we started tftp */
53 * These globals govern the timeout behavior when attempting a connection to a
54 * TFTP server. tftp_timeout_ms specifies the number of milliseconds to
55 * wait for the server to respond to initial connection. Second global,
56 * tftp_timeout_count_max, gives the number of such connection retries.
57 * tftp_timeout_count_max must be non-negative and tftp_timeout_ms must be
58 * positive. The globals are meant to be set (and restored) by code needing
59 * non-standard timeout behavior when initiating a TFTP transfer.
61 ulong tftp_timeout_ms = TIMEOUT;
62 int tftp_timeout_count_max = TIMEOUT_COUNT;
65 TFTP_ERR_UNDEFINED = 0,
66 TFTP_ERR_FILE_NOT_FOUND = 1,
67 TFTP_ERR_ACCESS_DENIED = 2,
68 TFTP_ERR_DISK_FULL = 3,
69 TFTP_ERR_UNEXPECTED_OPCODE = 4,
70 TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
71 TFTP_ERR_FILE_ALREADY_EXISTS = 6,
72 TFTP_ERR_OPTION_NEGOTIATION = 8,
75 static struct in_addr tftp_remote_ip;
76 /* The UDP port at their end */
77 static int tftp_remote_port;
78 /* The UDP port at our end */
79 static int tftp_our_port;
80 static int timeout_count;
81 /* packet sequence number */
82 static ulong tftp_cur_block;
83 /* last packet sequence number received */
84 static ulong tftp_prev_block;
85 /* count of sequence number wraparounds */
86 static ulong tftp_block_wrap;
87 /* memory offset due to wrapping */
88 static ulong tftp_block_wrap_offset;
89 static int tftp_state;
90 static ulong tftp_load_addr;
92 static ulong tftp_load_size;
94 #ifdef CONFIG_TFTP_TSIZE
95 /* The file size reported by the server */
96 static int tftp_tsize;
97 /* The number of hashes we printed */
98 static short tftp_tsize_num_hash;
100 /* The window size negotiated */
101 static ushort tftp_windowsize;
102 /* Next block to send ack to */
103 static ushort tftp_next_ack;
104 /* Last nack block we send */
105 static ushort tftp_last_nack;
106 #ifdef CONFIG_CMD_TFTPPUT
107 /* 1 if writing, else 0 */
108 static int tftp_put_active;
109 /* 1 if we have sent the last block */
110 static int tftp_put_final_block_sent;
112 #define tftp_put_active 0
115 #define STATE_SEND_RRQ 1
117 #define STATE_TOO_LARGE 3
118 #define STATE_BAD_MAGIC 4
120 #define STATE_RECV_WRQ 6
121 #define STATE_SEND_WRQ 7
122 #define STATE_INVALID_OPTION 8
124 /* default TFTP block size */
125 #define TFTP_BLOCK_SIZE 512
126 /* sequence number is 16 bit */
127 #define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
129 #define DEFAULT_NAME_LEN (8 + 4 + 1)
130 static char default_filename[DEFAULT_NAME_LEN];
132 #ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
135 #define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
138 static char tftp_filename[MAX_LEN];
140 /* 512 is poor choice for ethernet, MTU is typically 1500.
141 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
142 * almost-MTU block sizes. At least try... fall back to 512 if need be.
143 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
146 /* When windowsize is defined to 1,
147 * tftp behaves the same way as it was
150 #ifdef CONFIG_TFTP_WINDOWSIZE
151 #define TFTP_WINDOWSIZE CONFIG_TFTP_WINDOWSIZE
153 #define TFTP_WINDOWSIZE 1
156 static unsigned short tftp_block_size = TFTP_BLOCK_SIZE;
157 static unsigned short tftp_block_size_option = CONFIG_TFTP_BLOCKSIZE;
158 static unsigned short tftp_window_size_option = TFTP_WINDOWSIZE;
160 static inline int store_block(int block, uchar *src, unsigned int len)
162 ulong offset = block * tftp_block_size + tftp_block_wrap_offset -
164 ulong newsize = offset + len;
165 ulong store_addr = tftp_load_addr + offset;
166 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
169 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
170 /* start address in flash? */
171 if (flash_info[i].flash_id == FLASH_UNKNOWN)
173 if (store_addr >= flash_info[i].start[0]) {
179 if (rc) { /* Flash is destination for this packet */
180 rc = flash_write((char *)src, store_addr, len);
186 #endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
191 ulong end_addr = tftp_load_addr + tftp_load_size;
194 end_addr = ULONG_MAX;
196 if (store_addr < tftp_load_addr ||
197 store_addr + len > end_addr) {
198 puts("\nTFTP error: ");
199 puts("trying to overwrite reserved memory...\n");
203 ptr = map_sysmem(store_addr, len);
204 memcpy(ptr, src, len);
208 if (net_boot_file_size < newsize)
209 net_boot_file_size = newsize;
214 /* Clear our state ready for a new transfer */
215 static void new_transfer(void)
219 tftp_block_wrap_offset = 0;
220 #ifdef CONFIG_CMD_TFTPPUT
221 tftp_put_final_block_sent = 0;
225 #ifdef CONFIG_CMD_TFTPPUT
227 * Load the next block from memory to be sent over tftp.
229 * @param block Block number to send
230 * @param dst Destination buffer for data
231 * @param len Number of bytes in block (this one and every other)
232 * @return number of bytes loaded
234 static int load_block(unsigned block, uchar *dst, unsigned len)
236 /* We may want to get the final block from the previous set */
237 ulong offset = ((int)block - 1) * len + tftp_block_wrap_offset;
240 tosend = min(net_boot_file_size - offset, tosend);
241 (void)memcpy(dst, (void *)(image_save_addr + offset), tosend);
242 debug("%s: block=%u, offset=%lu, len=%u, tosend=%lu\n", __func__,
243 block, offset, len, tosend);
248 static void tftp_send(void);
249 static void tftp_timeout_handler(void);
251 /**********************************************************************/
253 static void show_block_marker(void)
257 #ifdef CONFIG_TFTP_TSIZE
259 pos = tftp_cur_block * tftp_block_size +
260 tftp_block_wrap_offset;
261 if (pos > tftp_tsize)
264 while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
266 tftp_tsize_num_hash++;
271 pos = (tftp_cur_block - 1) +
272 (tftp_block_wrap * TFTP_SEQUENCE_SIZE);
275 else if (((pos + 1) % (10 * HASHES_PER_LINE)) == 0)
281 * restart the current transfer due to an error
283 * @param msg Message to print for user
285 static void restart(const char *msg)
287 printf("\n%s; starting again\n", msg);
292 * Check if the block number has wrapped, and update progress
294 * TODO: The egregious use of global variables in this file should be tidied.
296 static void update_block_number(void)
299 * RFC1350 specifies that the first data packet will
300 * have sequence number 1. If we receive a sequence
301 * number of 0 this means that there was a wrap
302 * around of the (16 bit) counter.
304 if (tftp_cur_block == 0 && tftp_prev_block != 0) {
306 tftp_block_wrap_offset += tftp_block_size * TFTP_SEQUENCE_SIZE;
307 timeout_count = 0; /* we've done well, reset the timeout */
312 /* The TFTP get or put is complete */
313 static void tftp_complete(void)
315 #ifdef CONFIG_TFTP_TSIZE
316 /* Print hash marks for the last packet received */
317 while (tftp_tsize && tftp_tsize_num_hash < 49) {
319 tftp_tsize_num_hash++;
322 print_size(tftp_tsize, "");
324 time_start = get_timer(time_start);
325 if (time_start > 0) {
326 puts("\n\t "); /* Line up with "Loading: " */
327 print_size(net_boot_file_size /
328 time_start * 1000, "/s");
331 net_set_state(NETLOOP_SUCCESS);
334 static void tftp_send(void)
340 bool err_pkt = false;
343 * We will always be sending some sort of packet, so
344 * cobble together the packet headers now.
346 pkt = net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
348 switch (tftp_state) {
353 #ifdef CONFIG_CMD_TFTPPUT
354 *s++ = htons(tftp_state == STATE_SEND_RRQ ? TFTP_RRQ :
357 *s++ = htons(TFTP_RRQ);
360 strcpy((char *)pkt, tftp_filename);
361 pkt += strlen(tftp_filename) + 1;
362 strcpy((char *)pkt, "octet");
363 pkt += 5 /*strlen("octet")*/ + 1;
364 strcpy((char *)pkt, "timeout");
365 pkt += 7 /*strlen("timeout")*/ + 1;
366 sprintf((char *)pkt, "%lu", timeout_ms / 1000);
367 debug("send option \"timeout %s\"\n", (char *)pkt);
368 pkt += strlen((char *)pkt) + 1;
369 #ifdef CONFIG_TFTP_TSIZE
370 pkt += sprintf((char *)pkt, "tsize%c%u%c",
371 0, net_boot_file_size, 0);
373 /* try for more effic. blk size */
374 pkt += sprintf((char *)pkt, "blksize%c%d%c",
375 0, tftp_block_size_option, 0);
377 /* try for more effic. window size.
378 * Implemented only for tftp get.
379 * Don't bother sending if it's 1
381 if (tftp_state == STATE_SEND_RRQ && tftp_window_size_option > 1)
382 pkt += sprintf((char *)pkt, "windowsize%c%d%c",
383 0, tftp_window_size_option, 0);
393 s[0] = htons(TFTP_ACK);
394 s[1] = htons(tftp_cur_block);
395 pkt = (uchar *)(s + 2);
396 #ifdef CONFIG_CMD_TFTPPUT
397 if (tftp_put_active) {
398 int toload = tftp_block_size;
399 int loaded = load_block(tftp_cur_block, pkt, toload);
401 s[0] = htons(TFTP_DATA);
403 tftp_put_final_block_sent = (loaded < toload);
409 case STATE_TOO_LARGE:
412 *s++ = htons(TFTP_ERROR);
416 strcpy((char *)pkt, "File too large");
417 pkt += 14 /*strlen("File too large")*/ + 1;
422 case STATE_BAD_MAGIC:
425 *s++ = htons(TFTP_ERROR);
428 strcpy((char *)pkt, "File has bad magic");
429 pkt += 18 /*strlen("File has bad magic")*/ + 1;
434 case STATE_INVALID_OPTION:
437 *s++ = htons(TFTP_ERROR);
438 *s++ = htons(TFTP_ERR_OPTION_NEGOTIATION);
440 strcpy((char *)pkt, "Option Negotiation Failed");
441 /* strlen("Option Negotiation Failed") + NULL*/
448 net_send_udp_packet(net_server_ethaddr, tftp_remote_ip,
449 tftp_remote_port, tftp_our_port, len);
452 net_set_state(NETLOOP_FAIL);
455 #ifdef CONFIG_CMD_TFTPPUT
456 static void icmp_handler(unsigned type, unsigned code, unsigned dest,
457 struct in_addr sip, unsigned src, uchar *pkt,
460 if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
461 /* Oh dear the other end has gone away */
462 restart("TFTP server died");
467 static void tftp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
468 unsigned src, unsigned len)
473 u16 timeout_val_rcvd;
475 if (dest != tftp_our_port) {
478 if (tftp_state != STATE_SEND_RRQ && src != tftp_remote_port &&
479 tftp_state != STATE_RECV_WRQ && tftp_state != STATE_SEND_WRQ)
485 /* warning: don't use increment (++) in ntohs() macros!! */
489 switch (ntohs(proto)) {
494 #ifdef CONFIG_CMD_TFTPPUT
495 if (tftp_put_active) {
496 if (tftp_put_final_block_sent) {
500 * Move to the next block. We want our block
501 * count to wrap just like the other end!
503 int block = ntohs(*s);
504 int ack_ok = (tftp_cur_block == block);
506 tftp_prev_block = tftp_cur_block;
507 tftp_cur_block = (unsigned short)(block + 1);
508 update_block_number();
510 tftp_send(); /* Send next data block */
519 #ifdef CONFIG_CMD_TFTPSRV
522 tftp_remote_ip = sip;
523 tftp_remote_port = src;
524 tftp_our_port = 1024 + (get_timer(0) % 3072);
526 tftp_send(); /* Send ACK(0) */
532 for (i = 0; i < len; i++) {
539 tftp_state = STATE_OACK;
540 tftp_remote_port = src;
542 * Check for 'blksize' option.
543 * Careful: "i" is signed, "len" is unsigned, thus
544 * something like "len-8" may give a *huge* number
546 for (i = 0; i+8 < len; i++) {
547 if (strcasecmp((char *)pkt + i, "blksize") == 0) {
548 tftp_block_size = (unsigned short)
549 simple_strtoul((char *)pkt + i + 8,
551 debug("Blocksize oack: %s, %d\n",
552 (char *)pkt + i + 8, tftp_block_size);
553 if (tftp_block_size > tftp_block_size_option) {
554 printf("Invalid blk size(=%d)\n",
556 tftp_state = STATE_INVALID_OPTION;
559 if (strcasecmp((char *)pkt + i, "timeout") == 0) {
560 timeout_val_rcvd = (unsigned short)
561 simple_strtoul((char *)pkt + i + 8,
563 debug("Timeout oack: %s, %d\n",
564 (char *)pkt + i + 8, timeout_val_rcvd);
565 if (timeout_val_rcvd != (timeout_ms / 1000)) {
566 printf("Invalid timeout val(=%d s)\n",
568 tftp_state = STATE_INVALID_OPTION;
571 #ifdef CONFIG_TFTP_TSIZE
572 if (strcasecmp((char *)pkt + i, "tsize") == 0) {
573 tftp_tsize = simple_strtoul((char *)pkt + i + 6,
575 debug("size = %s, %d\n",
576 (char *)pkt + i + 6, tftp_tsize);
579 if (strcasecmp((char *)pkt + i, "windowsize") == 0) {
581 simple_strtoul((char *)pkt + i + 11,
583 debug("windowsize = %s, %d\n",
584 (char *)pkt + i + 11, tftp_windowsize);
588 tftp_next_ack = tftp_windowsize;
590 #ifdef CONFIG_CMD_TFTPPUT
591 if (tftp_put_active && tftp_state == STATE_OACK) {
592 /* Get ready to send the first block */
593 tftp_state = STATE_DATA;
597 tftp_send(); /* Send ACK or first data block */
604 if (ntohs(*(__be16 *)pkt) != (ushort)(tftp_cur_block + 1)) {
605 debug("Received unexpected block: %d, expected: %d\n",
606 ntohs(*(__be16 *)pkt),
607 (ushort)(tftp_cur_block + 1));
609 * If one packet is dropped most likely
610 * all other buffers in the window
611 * that will arrive will cause a sending NACK.
612 * This just overwellms the server, let's just send one.
614 if (tftp_last_nack != tftp_cur_block) {
616 tftp_last_nack = tftp_cur_block;
617 tftp_next_ack = (ushort)(tftp_cur_block +
624 tftp_cur_block %= TFTP_SEQUENCE_SIZE;
626 if (tftp_state == STATE_SEND_RRQ)
627 debug("Server did not acknowledge any options!\n");
629 if (tftp_state == STATE_SEND_RRQ || tftp_state == STATE_OACK ||
630 tftp_state == STATE_RECV_WRQ) {
631 /* first block received */
632 tftp_state = STATE_DATA;
633 tftp_remote_port = src;
636 if (tftp_cur_block != 1) { /* Assertion */
637 puts("\nTFTP error: ");
638 printf("First block is not block 1 (%ld)\n",
640 puts("Starting again\n\n");
646 if (tftp_cur_block == tftp_prev_block) {
647 /* Same block again; ignore it. */
651 update_block_number();
652 tftp_prev_block = tftp_cur_block;
653 timeout_count_max = tftp_timeout_count_max;
654 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
656 if (store_block(tftp_cur_block, pkt + 2, len)) {
658 net_set_state(NETLOOP_FAIL);
663 * Acknowledge the block just received, which will prompt
664 * the remote for the next one.
666 if (tftp_cur_block == tftp_next_ack) {
668 tftp_next_ack += tftp_windowsize;
671 if (len < tftp_block_size) {
678 printf("\nTFTP error: '%s' (%d)\n",
679 pkt + 2, ntohs(*(__be16 *)pkt));
681 switch (ntohs(*(__be16 *)pkt)) {
682 case TFTP_ERR_FILE_NOT_FOUND:
683 case TFTP_ERR_ACCESS_DENIED:
684 puts("Not retrying...\n");
686 net_set_state(NETLOOP_FAIL);
688 case TFTP_ERR_UNDEFINED:
689 case TFTP_ERR_DISK_FULL:
690 case TFTP_ERR_UNEXPECTED_OPCODE:
691 case TFTP_ERR_UNKNOWN_TRANSFER_ID:
692 case TFTP_ERR_FILE_ALREADY_EXISTS:
694 puts("Starting again\n\n");
703 static void tftp_timeout_handler(void)
705 if (++timeout_count > timeout_count_max) {
706 restart("Retry count exceeded");
709 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
710 if (tftp_state != STATE_RECV_WRQ)
715 /* Initialize tftp_load_addr and tftp_load_size from image_load_addr and lmb */
716 static int tftp_init_load_addr(void)
720 phys_size_t max_size;
722 lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
724 max_size = lmb_get_free_size(&lmb, image_load_addr);
728 tftp_load_size = max_size;
730 tftp_load_addr = image_load_addr;
734 void tftp_start(enum proto_t protocol)
736 #if CONFIG_NET_TFTP_VARS
737 char *ep; /* Environment pointer */
740 * Allow the user to choose TFTP blocksize and timeout.
741 * TFTP protocol has a minimal timeout of 1 second.
744 ep = env_get("tftpblocksize");
746 tftp_block_size_option = simple_strtol(ep, NULL, 10);
748 ep = env_get("tftpwindowsize");
750 tftp_window_size_option = simple_strtol(ep, NULL, 10);
752 ep = env_get("tftptimeout");
754 timeout_ms = simple_strtol(ep, NULL, 10);
756 if (timeout_ms < 1000) {
757 printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
762 ep = env_get("tftptimeoutcountmax");
764 tftp_timeout_count_max = simple_strtol(ep, NULL, 10);
766 if (tftp_timeout_count_max < 0) {
767 printf("TFTP timeout count max (%d ms) negative, set to 0\n",
768 tftp_timeout_count_max);
769 tftp_timeout_count_max = 0;
773 debug("TFTP blocksize = %i, TFTP windowsize = %d timeout = %ld ms\n",
774 tftp_block_size_option, tftp_window_size_option, timeout_ms);
776 tftp_remote_ip = net_server_ip;
777 if (!net_parse_bootfile(&tftp_remote_ip, tftp_filename, MAX_LEN)) {
778 sprintf(default_filename, "%02X%02X%02X%02X.img",
779 net_ip.s_addr & 0xFF,
780 (net_ip.s_addr >> 8) & 0xFF,
781 (net_ip.s_addr >> 16) & 0xFF,
782 (net_ip.s_addr >> 24) & 0xFF);
784 strncpy(tftp_filename, default_filename, DEFAULT_NAME_LEN);
785 tftp_filename[DEFAULT_NAME_LEN - 1] = 0;
787 printf("*** Warning: no boot file name; using '%s'\n",
791 printf("Using %s device\n", eth_get_name());
792 printf("TFTP %s server %pI4; our IP address is %pI4",
793 #ifdef CONFIG_CMD_TFTPPUT
794 protocol == TFTPPUT ? "to" : "from",
798 &tftp_remote_ip, &net_ip);
800 /* Check if we need to send across this subnet */
801 if (net_gateway.s_addr && net_netmask.s_addr) {
802 struct in_addr our_net;
803 struct in_addr remote_net;
805 our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
806 remote_net.s_addr = tftp_remote_ip.s_addr & net_netmask.s_addr;
807 if (our_net.s_addr != remote_net.s_addr)
808 printf("; sending through gateway %pI4", &net_gateway);
812 printf("Filename '%s'.", tftp_filename);
814 if (net_boot_file_expected_size_in_blocks) {
815 printf(" Size is 0x%x Bytes = ",
816 net_boot_file_expected_size_in_blocks << 9);
817 print_size(net_boot_file_expected_size_in_blocks << 9, "");
821 #ifdef CONFIG_CMD_TFTPPUT
822 tftp_put_active = (protocol == TFTPPUT);
823 if (tftp_put_active) {
824 printf("Save address: 0x%lx\n", image_save_addr);
825 printf("Save size: 0x%lx\n", image_save_size);
826 net_boot_file_size = image_save_size;
828 tftp_state = STATE_SEND_WRQ;
833 if (tftp_init_load_addr()) {
835 net_set_state(NETLOOP_FAIL);
836 puts("\nTFTP error: ");
837 puts("trying to overwrite reserved memory...\n");
840 printf("Load address: 0x%lx\n", tftp_load_addr);
841 puts("Loading: *\b");
842 tftp_state = STATE_SEND_RRQ;
843 #ifdef CONFIG_CMD_BOOTEFI
844 efi_set_bootdev("Net", "", tftp_filename);
848 time_start = get_timer(0);
849 timeout_count_max = tftp_timeout_count_max;
851 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
852 net_set_udp_handler(tftp_handler);
853 #ifdef CONFIG_CMD_TFTPPUT
854 net_set_icmp_handler(icmp_handler);
856 tftp_remote_port = WELL_KNOWN_PORT;
858 /* Use a pseudo-random port unless a specific port is set */
859 tftp_our_port = 1024 + (get_timer(0) % 3072);
861 #ifdef CONFIG_TFTP_PORT
862 ep = env_get("tftpdstp");
864 tftp_remote_port = simple_strtol(ep, NULL, 10);
865 ep = env_get("tftpsrcp");
867 tftp_our_port = simple_strtol(ep, NULL, 10);
872 /* zero out server ether in case the server ip has changed */
873 memset(net_server_ethaddr, 0, 6);
874 /* Revert tftp_block_size to dflt */
875 tftp_block_size = TFTP_BLOCK_SIZE;
876 #ifdef CONFIG_TFTP_TSIZE
878 tftp_tsize_num_hash = 0;
884 #ifdef CONFIG_CMD_TFTPSRV
885 void tftp_start_server(void)
887 tftp_filename[0] = 0;
889 if (tftp_init_load_addr()) {
891 net_set_state(NETLOOP_FAIL);
892 puts("\nTFTP error: trying to overwrite reserved memory...\n");
895 printf("Using %s device\n", eth_get_name());
896 printf("Listening for TFTP transfer on %pI4\n", &net_ip);
897 printf("Load address: 0x%lx\n", tftp_load_addr);
899 puts("Loading: *\b");
901 timeout_count_max = tftp_timeout_count_max;
903 timeout_ms = TIMEOUT;
904 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
906 /* Revert tftp_block_size to dflt */
907 tftp_block_size = TFTP_BLOCK_SIZE;
909 tftp_our_port = WELL_KNOWN_PORT;
911 #ifdef CONFIG_TFTP_TSIZE
913 tftp_tsize_num_hash = 0;
916 tftp_state = STATE_RECV_WRQ;
917 net_set_udp_handler(tftp_handler);
919 /* zero out server ether in case the server ip has changed */
920 memset(net_server_ethaddr, 0, 6);
922 #endif /* CONFIG_CMD_TFTPSRV */