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;
163 ulong newsize = offset + len;
164 ulong store_addr = tftp_load_addr + offset;
165 #ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
168 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
169 /* start address in flash? */
170 if (flash_info[i].flash_id == FLASH_UNKNOWN)
172 if (store_addr >= flash_info[i].start[0]) {
178 if (rc) { /* Flash is destination for this packet */
179 rc = flash_write((char *)src, store_addr, len);
185 #endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
190 ulong end_addr = tftp_load_addr + tftp_load_size;
193 end_addr = ULONG_MAX;
195 if (store_addr < tftp_load_addr ||
196 store_addr + len > end_addr) {
197 puts("\nTFTP error: ");
198 puts("trying to overwrite reserved memory...\n");
202 ptr = map_sysmem(store_addr, len);
203 memcpy(ptr, src, len);
207 if (net_boot_file_size < newsize)
208 net_boot_file_size = newsize;
213 /* Clear our state ready for a new transfer */
214 static void new_transfer(void)
218 tftp_block_wrap_offset = 0;
219 #ifdef CONFIG_CMD_TFTPPUT
220 tftp_put_final_block_sent = 0;
224 #ifdef CONFIG_CMD_TFTPPUT
226 * Load the next block from memory to be sent over tftp.
228 * @param block Block number to send
229 * @param dst Destination buffer for data
230 * @param len Number of bytes in block (this one and every other)
231 * @return number of bytes loaded
233 static int load_block(unsigned block, uchar *dst, unsigned len)
235 /* We may want to get the final block from the previous set */
236 ulong offset = ((int)block - 1) * len + tftp_block_wrap_offset;
239 tosend = min(net_boot_file_size - offset, tosend);
240 (void)memcpy(dst, (void *)(image_save_addr + offset), tosend);
241 debug("%s: block=%u, offset=%lu, len=%u, tosend=%lu\n", __func__,
242 block, offset, len, tosend);
247 static void tftp_send(void);
248 static void tftp_timeout_handler(void);
250 /**********************************************************************/
252 static void show_block_marker(void)
256 #ifdef CONFIG_TFTP_TSIZE
258 pos = tftp_cur_block * tftp_block_size +
259 tftp_block_wrap_offset;
260 if (pos > tftp_tsize)
263 while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
265 tftp_tsize_num_hash++;
270 pos = (tftp_cur_block - 1) +
271 (tftp_block_wrap * TFTP_SEQUENCE_SIZE);
274 else if (((pos + 1) % (10 * HASHES_PER_LINE)) == 0)
280 * restart the current transfer due to an error
282 * @param msg Message to print for user
284 static void restart(const char *msg)
286 printf("\n%s; starting again\n", msg);
291 * Check if the block number has wrapped, and update progress
293 * TODO: The egregious use of global variables in this file should be tidied.
295 static void update_block_number(void)
298 * RFC1350 specifies that the first data packet will
299 * have sequence number 1. If we receive a sequence
300 * number of 0 this means that there was a wrap
301 * around of the (16 bit) counter.
303 if (tftp_cur_block == 0 && tftp_prev_block != 0) {
305 tftp_block_wrap_offset += tftp_block_size * TFTP_SEQUENCE_SIZE;
306 timeout_count = 0; /* we've done well, reset the timeout */
311 /* The TFTP get or put is complete */
312 static void tftp_complete(void)
314 #ifdef CONFIG_TFTP_TSIZE
315 /* Print hash marks for the last packet received */
316 while (tftp_tsize && tftp_tsize_num_hash < 49) {
318 tftp_tsize_num_hash++;
321 print_size(tftp_tsize, "");
323 time_start = get_timer(time_start);
324 if (time_start > 0) {
325 puts("\n\t "); /* Line up with "Loading: " */
326 print_size(net_boot_file_size /
327 time_start * 1000, "/s");
330 net_set_state(NETLOOP_SUCCESS);
333 static void tftp_send(void)
339 bool err_pkt = false;
342 * We will always be sending some sort of packet, so
343 * cobble together the packet headers now.
345 pkt = net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
347 switch (tftp_state) {
352 #ifdef CONFIG_CMD_TFTPPUT
353 *s++ = htons(tftp_state == STATE_SEND_RRQ ? TFTP_RRQ :
356 *s++ = htons(TFTP_RRQ);
359 strcpy((char *)pkt, tftp_filename);
360 pkt += strlen(tftp_filename) + 1;
361 strcpy((char *)pkt, "octet");
362 pkt += 5 /*strlen("octet")*/ + 1;
363 strcpy((char *)pkt, "timeout");
364 pkt += 7 /*strlen("timeout")*/ + 1;
365 sprintf((char *)pkt, "%lu", timeout_ms / 1000);
366 debug("send option \"timeout %s\"\n", (char *)pkt);
367 pkt += strlen((char *)pkt) + 1;
368 #ifdef CONFIG_TFTP_TSIZE
369 pkt += sprintf((char *)pkt, "tsize%c%u%c",
370 0, net_boot_file_size, 0);
372 /* try for more effic. blk size */
373 pkt += sprintf((char *)pkt, "blksize%c%d%c",
374 0, tftp_block_size_option, 0);
376 /* try for more effic. window size.
377 * Implemented only for tftp get.
378 * Don't bother sending if it's 1
380 if (tftp_state == STATE_SEND_RRQ && tftp_window_size_option > 1)
381 pkt += sprintf((char *)pkt, "windowsize%c%d%c",
382 0, tftp_window_size_option, 0);
392 s[0] = htons(TFTP_ACK);
393 s[1] = htons(tftp_cur_block);
394 pkt = (uchar *)(s + 2);
395 #ifdef CONFIG_CMD_TFTPPUT
396 if (tftp_put_active) {
397 int toload = tftp_block_size;
398 int loaded = load_block(tftp_cur_block, pkt, toload);
400 s[0] = htons(TFTP_DATA);
402 tftp_put_final_block_sent = (loaded < toload);
408 case STATE_TOO_LARGE:
411 *s++ = htons(TFTP_ERROR);
415 strcpy((char *)pkt, "File too large");
416 pkt += 14 /*strlen("File too large")*/ + 1;
421 case STATE_BAD_MAGIC:
424 *s++ = htons(TFTP_ERROR);
427 strcpy((char *)pkt, "File has bad magic");
428 pkt += 18 /*strlen("File has bad magic")*/ + 1;
433 case STATE_INVALID_OPTION:
436 *s++ = htons(TFTP_ERROR);
437 *s++ = htons(TFTP_ERR_OPTION_NEGOTIATION);
439 strcpy((char *)pkt, "Option Negotiation Failed");
440 /* strlen("Option Negotiation Failed") + NULL*/
447 net_send_udp_packet(net_server_ethaddr, tftp_remote_ip,
448 tftp_remote_port, tftp_our_port, len);
451 net_set_state(NETLOOP_FAIL);
454 #ifdef CONFIG_CMD_TFTPPUT
455 static void icmp_handler(unsigned type, unsigned code, unsigned dest,
456 struct in_addr sip, unsigned src, uchar *pkt,
459 if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
460 /* Oh dear the other end has gone away */
461 restart("TFTP server died");
466 static void tftp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
467 unsigned src, unsigned len)
472 u16 timeout_val_rcvd;
474 if (dest != tftp_our_port) {
477 if (tftp_state != STATE_SEND_RRQ && src != tftp_remote_port &&
478 tftp_state != STATE_RECV_WRQ && tftp_state != STATE_SEND_WRQ)
484 /* warning: don't use increment (++) in ntohs() macros!! */
488 switch (ntohs(proto)) {
493 #ifdef CONFIG_CMD_TFTPPUT
494 if (tftp_put_active) {
495 if (tftp_put_final_block_sent) {
499 * Move to the next block. We want our block
500 * count to wrap just like the other end!
502 int block = ntohs(*s);
503 int ack_ok = (tftp_cur_block == block);
505 tftp_prev_block = tftp_cur_block;
506 tftp_cur_block = (unsigned short)(block + 1);
507 update_block_number();
509 tftp_send(); /* Send next data block */
518 #ifdef CONFIG_CMD_TFTPSRV
521 tftp_remote_ip = sip;
522 tftp_remote_port = src;
523 tftp_our_port = 1024 + (get_timer(0) % 3072);
525 tftp_send(); /* Send ACK(0) */
531 for (i = 0; i < len; i++) {
538 tftp_state = STATE_OACK;
539 tftp_remote_port = src;
541 * Check for 'blksize' option.
542 * Careful: "i" is signed, "len" is unsigned, thus
543 * something like "len-8" may give a *huge* number
545 for (i = 0; i+8 < len; i++) {
546 if (strcasecmp((char *)pkt + i, "blksize") == 0) {
547 tftp_block_size = (unsigned short)
548 simple_strtoul((char *)pkt + i + 8,
550 debug("Blocksize oack: %s, %d\n",
551 (char *)pkt + i + 8, tftp_block_size);
552 if (tftp_block_size > tftp_block_size_option) {
553 printf("Invalid blk size(=%d)\n",
555 tftp_state = STATE_INVALID_OPTION;
558 if (strcasecmp((char *)pkt + i, "timeout") == 0) {
559 timeout_val_rcvd = (unsigned short)
560 simple_strtoul((char *)pkt + i + 8,
562 debug("Timeout oack: %s, %d\n",
563 (char *)pkt + i + 8, timeout_val_rcvd);
564 if (timeout_val_rcvd != (timeout_ms / 1000)) {
565 printf("Invalid timeout val(=%d s)\n",
567 tftp_state = STATE_INVALID_OPTION;
570 #ifdef CONFIG_TFTP_TSIZE
571 if (strcasecmp((char *)pkt + i, "tsize") == 0) {
572 tftp_tsize = simple_strtoul((char *)pkt + i + 6,
574 debug("size = %s, %d\n",
575 (char *)pkt + i + 6, tftp_tsize);
578 if (strcasecmp((char *)pkt + i, "windowsize") == 0) {
580 simple_strtoul((char *)pkt + i + 11,
582 debug("windowsize = %s, %d\n",
583 (char *)pkt + i + 11, tftp_windowsize);
587 tftp_next_ack = tftp_windowsize;
589 #ifdef CONFIG_CMD_TFTPPUT
590 if (tftp_put_active && tftp_state == STATE_OACK) {
591 /* Get ready to send the first block */
592 tftp_state = STATE_DATA;
596 tftp_send(); /* Send ACK or first data block */
603 if (ntohs(*(__be16 *)pkt) != (ushort)(tftp_cur_block + 1)) {
604 debug("Received unexpected block: %d, expected: %d\n",
605 ntohs(*(__be16 *)pkt),
606 (ushort)(tftp_cur_block + 1));
608 * If one packet is dropped most likely
609 * all other buffers in the window
610 * that will arrive will cause a sending NACK.
611 * This just overwellms the server, let's just send one.
613 if (tftp_last_nack != tftp_cur_block) {
615 tftp_last_nack = tftp_cur_block;
616 tftp_next_ack = (ushort)(tftp_cur_block +
623 tftp_cur_block %= TFTP_SEQUENCE_SIZE;
625 if (tftp_state == STATE_SEND_RRQ)
626 debug("Server did not acknowledge any options!\n");
628 if (tftp_state == STATE_SEND_RRQ || tftp_state == STATE_OACK ||
629 tftp_state == STATE_RECV_WRQ) {
630 /* first block received */
631 tftp_state = STATE_DATA;
632 tftp_remote_port = src;
635 if (tftp_cur_block != 1) { /* Assertion */
636 puts("\nTFTP error: ");
637 printf("First block is not block 1 (%ld)\n",
639 puts("Starting again\n\n");
645 if (tftp_cur_block == tftp_prev_block) {
646 /* Same block again; ignore it. */
650 update_block_number();
651 tftp_prev_block = tftp_cur_block;
652 timeout_count_max = tftp_timeout_count_max;
653 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
655 if (store_block(tftp_cur_block - 1, pkt + 2, len)) {
657 net_set_state(NETLOOP_FAIL);
662 * Acknowledge the block just received, which will prompt
663 * the remote for the next one.
665 if (tftp_cur_block == tftp_next_ack) {
667 tftp_next_ack += tftp_windowsize;
670 if (len < tftp_block_size) {
677 printf("\nTFTP error: '%s' (%d)\n",
678 pkt + 2, ntohs(*(__be16 *)pkt));
680 switch (ntohs(*(__be16 *)pkt)) {
681 case TFTP_ERR_FILE_NOT_FOUND:
682 case TFTP_ERR_ACCESS_DENIED:
683 puts("Not retrying...\n");
685 net_set_state(NETLOOP_FAIL);
687 case TFTP_ERR_UNDEFINED:
688 case TFTP_ERR_DISK_FULL:
689 case TFTP_ERR_UNEXPECTED_OPCODE:
690 case TFTP_ERR_UNKNOWN_TRANSFER_ID:
691 case TFTP_ERR_FILE_ALREADY_EXISTS:
693 puts("Starting again\n\n");
702 static void tftp_timeout_handler(void)
704 if (++timeout_count > timeout_count_max) {
705 restart("Retry count exceeded");
708 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
709 if (tftp_state != STATE_RECV_WRQ)
714 /* Initialize tftp_load_addr and tftp_load_size from image_load_addr and lmb */
715 static int tftp_init_load_addr(void)
719 phys_size_t max_size;
721 lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
723 max_size = lmb_get_free_size(&lmb, image_load_addr);
727 tftp_load_size = max_size;
729 tftp_load_addr = image_load_addr;
733 void tftp_start(enum proto_t protocol)
735 #if CONFIG_NET_TFTP_VARS
736 char *ep; /* Environment pointer */
739 * Allow the user to choose TFTP blocksize and timeout.
740 * TFTP protocol has a minimal timeout of 1 second.
743 ep = env_get("tftpblocksize");
745 tftp_block_size_option = simple_strtol(ep, NULL, 10);
747 ep = env_get("tftpwindowsize");
749 tftp_window_size_option = simple_strtol(ep, NULL, 10);
751 ep = env_get("tftptimeout");
753 timeout_ms = simple_strtol(ep, NULL, 10);
755 if (timeout_ms < 1000) {
756 printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
761 ep = env_get("tftptimeoutcountmax");
763 tftp_timeout_count_max = simple_strtol(ep, NULL, 10);
765 if (tftp_timeout_count_max < 0) {
766 printf("TFTP timeout count max (%d ms) negative, set to 0\n",
767 tftp_timeout_count_max);
768 tftp_timeout_count_max = 0;
772 debug("TFTP blocksize = %i, TFTP windowsize = %d timeout = %ld ms\n",
773 tftp_block_size_option, tftp_window_size_option, timeout_ms);
775 tftp_remote_ip = net_server_ip;
776 if (!net_parse_bootfile(&tftp_remote_ip, tftp_filename, MAX_LEN)) {
777 sprintf(default_filename, "%02X%02X%02X%02X.img",
778 net_ip.s_addr & 0xFF,
779 (net_ip.s_addr >> 8) & 0xFF,
780 (net_ip.s_addr >> 16) & 0xFF,
781 (net_ip.s_addr >> 24) & 0xFF);
783 strncpy(tftp_filename, default_filename, DEFAULT_NAME_LEN);
784 tftp_filename[DEFAULT_NAME_LEN - 1] = 0;
786 printf("*** Warning: no boot file name; using '%s'\n",
790 printf("Using %s device\n", eth_get_name());
791 printf("TFTP %s server %pI4; our IP address is %pI4",
792 #ifdef CONFIG_CMD_TFTPPUT
793 protocol == TFTPPUT ? "to" : "from",
797 &tftp_remote_ip, &net_ip);
799 /* Check if we need to send across this subnet */
800 if (net_gateway.s_addr && net_netmask.s_addr) {
801 struct in_addr our_net;
802 struct in_addr remote_net;
804 our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
805 remote_net.s_addr = tftp_remote_ip.s_addr & net_netmask.s_addr;
806 if (our_net.s_addr != remote_net.s_addr)
807 printf("; sending through gateway %pI4", &net_gateway);
811 printf("Filename '%s'.", tftp_filename);
813 if (net_boot_file_expected_size_in_blocks) {
814 printf(" Size is 0x%x Bytes = ",
815 net_boot_file_expected_size_in_blocks << 9);
816 print_size(net_boot_file_expected_size_in_blocks << 9, "");
820 #ifdef CONFIG_CMD_TFTPPUT
821 tftp_put_active = (protocol == TFTPPUT);
822 if (tftp_put_active) {
823 printf("Save address: 0x%lx\n", image_save_addr);
824 printf("Save size: 0x%lx\n", image_save_size);
825 net_boot_file_size = image_save_size;
827 tftp_state = STATE_SEND_WRQ;
832 if (tftp_init_load_addr()) {
834 net_set_state(NETLOOP_FAIL);
835 puts("\nTFTP error: ");
836 puts("trying to overwrite reserved memory...\n");
839 printf("Load address: 0x%lx\n", tftp_load_addr);
840 puts("Loading: *\b");
841 tftp_state = STATE_SEND_RRQ;
842 #ifdef CONFIG_CMD_BOOTEFI
843 efi_set_bootdev("Net", "", tftp_filename);
847 time_start = get_timer(0);
848 timeout_count_max = tftp_timeout_count_max;
850 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
851 net_set_udp_handler(tftp_handler);
852 #ifdef CONFIG_CMD_TFTPPUT
853 net_set_icmp_handler(icmp_handler);
855 tftp_remote_port = WELL_KNOWN_PORT;
857 /* Use a pseudo-random port unless a specific port is set */
858 tftp_our_port = 1024 + (get_timer(0) % 3072);
860 #ifdef CONFIG_TFTP_PORT
861 ep = env_get("tftpdstp");
863 tftp_remote_port = simple_strtol(ep, NULL, 10);
864 ep = env_get("tftpsrcp");
866 tftp_our_port = simple_strtol(ep, NULL, 10);
871 /* zero out server ether in case the server ip has changed */
872 memset(net_server_ethaddr, 0, 6);
873 /* Revert tftp_block_size to dflt */
874 tftp_block_size = TFTP_BLOCK_SIZE;
875 #ifdef CONFIG_TFTP_TSIZE
877 tftp_tsize_num_hash = 0;
883 #ifdef CONFIG_CMD_TFTPSRV
884 void tftp_start_server(void)
886 tftp_filename[0] = 0;
888 if (tftp_init_load_addr()) {
890 net_set_state(NETLOOP_FAIL);
891 puts("\nTFTP error: trying to overwrite reserved memory...\n");
894 printf("Using %s device\n", eth_get_name());
895 printf("Listening for TFTP transfer on %pI4\n", &net_ip);
896 printf("Load address: 0x%lx\n", tftp_load_addr);
898 puts("Loading: *\b");
900 timeout_count_max = tftp_timeout_count_max;
902 timeout_ms = TIMEOUT;
903 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
905 /* Revert tftp_block_size to dflt */
906 tftp_block_size = TFTP_BLOCK_SIZE;
908 tftp_our_port = WELL_KNOWN_PORT;
910 #ifdef CONFIG_TFTP_TSIZE
912 tftp_tsize_num_hash = 0;
915 tftp_state = STATE_RECV_WRQ;
916 net_set_udp_handler(tftp_handler);
918 /* zero out server ether in case the server ip has changed */
919 memset(net_server_ethaddr, 0, 6);
921 #endif /* CONFIG_CMD_TFTPSRV */