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wdenkfe8c2802002-11-03 00:38:21 +00001/*
Luca Ceresoli2f094132011-05-14 05:49:56 +00002 * Copyright 1994, 1995, 2000 Neil Russell.
3 * (See License)
4 * Copyright 2000, 2001 DENX Software Engineering, Wolfgang Denk, wd@denx.de
Luca Ceresolie59e3562011-05-17 00:03:39 +00005 * Copyright 2011 Comelit Group SpA,
6 * Luca Ceresoli <luca.ceresoli@comelit.it>
wdenkfe8c2802002-11-03 00:38:21 +00007 */
wdenkfe8c2802002-11-03 00:38:21 +00008#include <common.h>
9#include <command.h>
Alexander Graf0efe1bc2016-05-06 21:01:01 +020010#include <efi_loader.h>
Simon Glass7b51b572019-08-01 09:46:52 -060011#include <env.h>
Simon Glass8e8ccfe2019-12-28 10:45:03 -070012#include <image.h>
Simon Glass4d72caa2020-05-10 11:40:01 -060013#include <lmb.h>
Simon Glassf7ae49f2020-05-10 11:40:05 -060014#include <log.h>
Joe Hershberger55d5fd92015-03-22 17:09:08 -050015#include <mapmem.h>
wdenkfe8c2802002-11-03 00:38:21 +000016#include <net.h>
Simon Glass401d1c42020-10-30 21:38:53 -060017#include <asm/global_data.h>
Lukasz Majewski34696952015-08-24 00:21:43 +020018#include <net/tftp.h>
wdenkfe8c2802002-11-03 00:38:21 +000019#include "bootp.h"
Joe Hershberger13dfe942012-05-15 08:59:12 +000020#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
21#include <flash.h>
22#endif
wdenkfe8c2802002-11-03 00:38:21 +000023
Simon Goldschmidta156c472019-01-14 22:38:22 +010024DECLARE_GLOBAL_DATA_PTR;
25
Luca Ceresoli2f094132011-05-14 05:49:56 +000026/* Well known TFTP port # */
27#define WELL_KNOWN_PORT 69
28/* Millisecs to timeout for lost pkt */
Bin Mengaf2ca592015-08-27 22:25:51 -070029#define TIMEOUT 5000UL
wdenkfe8c2802002-11-03 00:38:21 +000030#ifndef CONFIG_NET_RETRY_COUNT
Luca Ceresoli2f094132011-05-14 05:49:56 +000031/* # of timeouts before giving up */
Bin Mengaf2ca592015-08-27 22:25:51 -070032# define TIMEOUT_COUNT 10
wdenkfe8c2802002-11-03 00:38:21 +000033#else
34# define TIMEOUT_COUNT (CONFIG_NET_RETRY_COUNT * 2)
35#endif
Luca Ceresoli2f094132011-05-14 05:49:56 +000036/* Number of "loading" hashes per line (for checking the image size) */
37#define HASHES_PER_LINE 65
wdenkfe8c2802002-11-03 00:38:21 +000038
39/*
40 * TFTP operations.
41 */
42#define TFTP_RRQ 1
43#define TFTP_WRQ 2
44#define TFTP_DATA 3
45#define TFTP_ACK 4
46#define TFTP_ERROR 5
wdenkfbe4b5c2003-10-06 21:55:32 +000047#define TFTP_OACK 6
wdenkfe8c2802002-11-03 00:38:21 +000048
Joe Hershberger8885c5f2015-04-08 01:41:07 -050049static ulong timeout_ms = TIMEOUT;
50static int timeout_count_max = TIMEOUT_COUNT;
Simon Glass85b19802012-10-11 13:57:36 +000051static ulong time_start; /* Record time we started tftp */
Bartlomiej Siekae83cc062008-10-01 15:26:29 +020052
53/*
54 * These globals govern the timeout behavior when attempting a connection to a
Joe Hershberger8885c5f2015-04-08 01:41:07 -050055 * TFTP server. tftp_timeout_ms specifies the number of milliseconds to
Bartlomiej Siekae83cc062008-10-01 15:26:29 +020056 * wait for the server to respond to initial connection. Second global,
Joe Hershberger8885c5f2015-04-08 01:41:07 -050057 * tftp_timeout_count_max, gives the number of such connection retries.
58 * tftp_timeout_count_max must be non-negative and tftp_timeout_ms must be
Bartlomiej Siekae83cc062008-10-01 15:26:29 +020059 * positive. The globals are meant to be set (and restored) by code needing
60 * non-standard timeout behavior when initiating a TFTP transfer.
61 */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050062ulong tftp_timeout_ms = TIMEOUT;
63int tftp_timeout_count_max = TIMEOUT_COUNT;
Bartlomiej Siekae83cc062008-10-01 15:26:29 +020064
Remy Bohmeraafda382009-10-28 22:13:40 +010065enum {
66 TFTP_ERR_UNDEFINED = 0,
67 TFTP_ERR_FILE_NOT_FOUND = 1,
68 TFTP_ERR_ACCESS_DENIED = 2,
69 TFTP_ERR_DISK_FULL = 3,
70 TFTP_ERR_UNEXPECTED_OPCODE = 4,
71 TFTP_ERR_UNKNOWN_TRANSFER_ID = 5,
72 TFTP_ERR_FILE_ALREADY_EXISTS = 6,
Ravik Hasija08139212020-05-18 21:35:43 -070073 TFTP_ERR_OPTION_NEGOTIATION = 8,
Remy Bohmeraafda382009-10-28 22:13:40 +010074};
75
Joe Hershberger049a95a2015-04-08 01:41:01 -050076static struct in_addr tftp_remote_ip;
Luca Ceresoli2f094132011-05-14 05:49:56 +000077/* The UDP port at their end */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050078static int tftp_remote_port;
Luca Ceresoli2f094132011-05-14 05:49:56 +000079/* The UDP port at our end */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050080static int tftp_our_port;
81static int timeout_count;
Luca Ceresoli2f094132011-05-14 05:49:56 +000082/* packet sequence number */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050083static ulong tftp_cur_block;
Luca Ceresoli2f094132011-05-14 05:49:56 +000084/* last packet sequence number received */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050085static ulong tftp_prev_block;
Luca Ceresoli2f094132011-05-14 05:49:56 +000086/* count of sequence number wraparounds */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050087static ulong tftp_block_wrap;
Luca Ceresoli2f094132011-05-14 05:49:56 +000088/* memory offset due to wrapping */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050089static ulong tftp_block_wrap_offset;
90static int tftp_state;
Simon Goldschmidta156c472019-01-14 22:38:22 +010091static ulong tftp_load_addr;
92#ifdef CONFIG_LMB
93static ulong tftp_load_size;
94#endif
Robin Getz4fccb812009-08-20 10:50:20 -040095#ifdef CONFIG_TFTP_TSIZE
Luca Ceresoli2f094132011-05-14 05:49:56 +000096/* The file size reported by the server */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050097static int tftp_tsize;
Luca Ceresoli2f094132011-05-14 05:49:56 +000098/* The number of hashes we printed */
Joe Hershberger8885c5f2015-04-08 01:41:07 -050099static short tftp_tsize_num_hash;
Robin Getz4fccb812009-08-20 10:50:20 -0400100#endif
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300101/* The window size negotiated */
102static ushort tftp_windowsize;
103/* Next block to send ack to */
104static ushort tftp_next_ack;
105/* Last nack block we send */
106static ushort tftp_last_nack;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000107#ifdef CONFIG_CMD_TFTPPUT
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500108/* 1 if writing, else 0 */
109static int tftp_put_active;
110/* 1 if we have sent the last block */
111static int tftp_put_final_block_sent;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000112#else
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500113#define tftp_put_active 0
Simon Glass1fb7cd42011-10-24 18:00:07 +0000114#endif
wdenk3f85ce22004-02-23 16:11:30 +0000115
Luca Ceresolie3fb0ab2011-05-17 00:03:38 +0000116#define STATE_SEND_RRQ 1
wdenkfe8c2802002-11-03 00:38:21 +0000117#define STATE_DATA 2
118#define STATE_TOO_LARGE 3
119#define STATE_BAD_MAGIC 4
wdenkfbe4b5c2003-10-06 21:55:32 +0000120#define STATE_OACK 5
Luca Ceresolie59e3562011-05-17 00:03:39 +0000121#define STATE_RECV_WRQ 6
Simon Glass1fb7cd42011-10-24 18:00:07 +0000122#define STATE_SEND_WRQ 7
Ravik Hasija08139212020-05-18 21:35:43 -0700123#define STATE_INVALID_OPTION 8
wdenkfe8c2802002-11-03 00:38:21 +0000124
Luca Ceresoli2f094132011-05-14 05:49:56 +0000125/* default TFTP block size */
126#define TFTP_BLOCK_SIZE 512
127/* sequence number is 16 bit */
128#define TFTP_SEQUENCE_SIZE ((ulong)(1<<16))
wdenk3f85ce22004-02-23 16:11:30 +0000129
wdenkfe8c2802002-11-03 00:38:21 +0000130#define DEFAULT_NAME_LEN (8 + 4 + 1)
131static char default_filename[DEFAULT_NAME_LEN];
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100132
133#ifndef CONFIG_TFTP_FILE_NAME_MAX_LEN
134#define MAX_LEN 128
135#else
136#define MAX_LEN CONFIG_TFTP_FILE_NAME_MAX_LEN
137#endif
138
139static char tftp_filename[MAX_LEN];
wdenkfe8c2802002-11-03 00:38:21 +0000140
Wolfgang Denk85eb5ca2007-08-14 09:47:27 +0200141/* 512 is poor choice for ethernet, MTU is typically 1500.
142 * Minus eth.hdrs thats 1468. Can get 2x better throughput with
David Updegraff53a5c422007-06-11 10:41:07 -0500143 * almost-MTU block sizes. At least try... fall back to 512 if need be.
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200144 * (but those using CONFIG_IP_DEFRAG may want to set a larger block in cfg file)
David Updegraff53a5c422007-06-11 10:41:07 -0500145 */
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200146
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300147/* When windowsize is defined to 1,
148 * tftp behaves the same way as it was
149 * never declared
150 */
151#ifdef CONFIG_TFTP_WINDOWSIZE
152#define TFTP_WINDOWSIZE CONFIG_TFTP_WINDOWSIZE
153#else
154#define TFTP_WINDOWSIZE 1
155#endif
156
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500157static unsigned short tftp_block_size = TFTP_BLOCK_SIZE;
Patrick Delaunay31d275b2020-04-22 14:18:26 +0200158static unsigned short tftp_block_size_option = CONFIG_TFTP_BLOCKSIZE;
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300159static unsigned short tftp_window_size_option = TFTP_WINDOWSIZE;
David Updegraff53a5c422007-06-11 10:41:07 -0500160
Simon Goldschmidta156c472019-01-14 22:38:22 +0100161static inline int store_block(int block, uchar *src, unsigned int len)
wdenkfe8c2802002-11-03 00:38:21 +0000162{
Ley Foon Tanae0bdf02020-08-25 10:26:36 +0800163 ulong offset = block * tftp_block_size + tftp_block_wrap_offset -
164 tftp_block_size;
wdenk3f85ce22004-02-23 16:11:30 +0000165 ulong newsize = offset + len;
Simon Goldschmidta156c472019-01-14 22:38:22 +0100166 ulong store_addr = tftp_load_addr + offset;
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200167#ifdef CONFIG_SYS_DIRECT_FLASH_TFTP
wdenkfe8c2802002-11-03 00:38:21 +0000168 int i, rc = 0;
169
Luca Ceresolic718b142011-05-14 05:49:57 +0000170 for (i = 0; i < CONFIG_SYS_MAX_FLASH_BANKS; i++) {
wdenkfe8c2802002-11-03 00:38:21 +0000171 /* start address in flash? */
Jochen Friedrichbe1b0d22008-09-02 11:24:59 +0200172 if (flash_info[i].flash_id == FLASH_UNKNOWN)
173 continue;
Simon Goldschmidta156c472019-01-14 22:38:22 +0100174 if (store_addr >= flash_info[i].start[0]) {
wdenkfe8c2802002-11-03 00:38:21 +0000175 rc = 1;
176 break;
177 }
178 }
179
180 if (rc) { /* Flash is destination for this packet */
Simon Goldschmidta156c472019-01-14 22:38:22 +0100181 rc = flash_write((char *)src, store_addr, len);
wdenkfe8c2802002-11-03 00:38:21 +0000182 if (rc) {
Luca Ceresolic718b142011-05-14 05:49:57 +0000183 flash_perror(rc);
Simon Goldschmidta156c472019-01-14 22:38:22 +0100184 return rc;
wdenkfe8c2802002-11-03 00:38:21 +0000185 }
Joe Hershberger13dfe942012-05-15 08:59:12 +0000186 } else
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200187#endif /* CONFIG_SYS_DIRECT_FLASH_TFTP */
wdenkfe8c2802002-11-03 00:38:21 +0000188 {
Simon Goldschmidta156c472019-01-14 22:38:22 +0100189 void *ptr;
Joe Hershberger55d5fd92015-03-22 17:09:08 -0500190
Simon Goldschmidta156c472019-01-14 22:38:22 +0100191#ifdef CONFIG_LMB
Bin Mengca48cb42019-11-15 22:20:13 -0800192 ulong end_addr = tftp_load_addr + tftp_load_size;
193
194 if (!end_addr)
195 end_addr = ULONG_MAX;
196
Simon Goldschmidta156c472019-01-14 22:38:22 +0100197 if (store_addr < tftp_load_addr ||
Bin Mengca48cb42019-11-15 22:20:13 -0800198 store_addr + len > end_addr) {
Simon Goldschmidta156c472019-01-14 22:38:22 +0100199 puts("\nTFTP error: ");
200 puts("trying to overwrite reserved memory...\n");
201 return -1;
202 }
203#endif
204 ptr = map_sysmem(store_addr, len);
Joe Hershberger55d5fd92015-03-22 17:09:08 -0500205 memcpy(ptr, src, len);
206 unmap_sysmem(ptr);
wdenkfe8c2802002-11-03 00:38:21 +0000207 }
208
Joe Hershberger14111572015-04-08 01:41:02 -0500209 if (net_boot_file_size < newsize)
210 net_boot_file_size = newsize;
Simon Goldschmidta156c472019-01-14 22:38:22 +0100211
212 return 0;
wdenkfe8c2802002-11-03 00:38:21 +0000213}
214
Simon Glasse4cde2f2011-10-24 18:00:04 +0000215/* Clear our state ready for a new transfer */
Simon Glass165099e2011-10-27 06:24:28 +0000216static void new_transfer(void)
Simon Glasse4cde2f2011-10-24 18:00:04 +0000217{
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500218 tftp_prev_block = 0;
219 tftp_block_wrap = 0;
220 tftp_block_wrap_offset = 0;
Simon Glasse4cde2f2011-10-24 18:00:04 +0000221#ifdef CONFIG_CMD_TFTPPUT
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500222 tftp_put_final_block_sent = 0;
Simon Glasse4cde2f2011-10-24 18:00:04 +0000223#endif
224}
225
Simon Glass1fb7cd42011-10-24 18:00:07 +0000226#ifdef CONFIG_CMD_TFTPPUT
227/**
228 * Load the next block from memory to be sent over tftp.
229 *
230 * @param block Block number to send
231 * @param dst Destination buffer for data
232 * @param len Number of bytes in block (this one and every other)
Heinrich Schuchardt185f8122022-01-19 18:05:50 +0100233 * Return: number of bytes loaded
Simon Glass1fb7cd42011-10-24 18:00:07 +0000234 */
235static int load_block(unsigned block, uchar *dst, unsigned len)
236{
237 /* We may want to get the final block from the previous set */
Ley Foon Tanf6a158b2020-08-25 10:26:37 +0800238 ulong offset = block * tftp_block_size + tftp_block_wrap_offset -
239 tftp_block_size;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000240 ulong tosend = len;
241
Joe Hershberger14111572015-04-08 01:41:02 -0500242 tosend = min(net_boot_file_size - offset, tosend);
Simon Glassbb872dd2019-12-28 10:45:02 -0700243 (void)memcpy(dst, (void *)(image_save_addr + offset), tosend);
Heinrich Schuchardt2bcc43b2020-02-22 08:43:40 +0100244 debug("%s: block=%u, offset=%lu, len=%u, tosend=%lu\n", __func__,
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500245 block, offset, len, tosend);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000246 return tosend;
247}
248#endif
249
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500250static void tftp_send(void);
251static void tftp_timeout_handler(void);
wdenkfe8c2802002-11-03 00:38:21 +0000252
253/**********************************************************************/
254
Simon Glassf5329bb2011-10-24 18:00:03 +0000255static void show_block_marker(void)
256{
Ravik Hasijade5468e2020-05-07 14:55:32 -0700257 ulong pos;
258
Simon Glassf5329bb2011-10-24 18:00:03 +0000259#ifdef CONFIG_TFTP_TSIZE
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500260 if (tftp_tsize) {
Ravik Hasijade5468e2020-05-07 14:55:32 -0700261 pos = tftp_cur_block * tftp_block_size +
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500262 tftp_block_wrap_offset;
Max Krummenacher7628afe2015-08-05 17:17:05 +0200263 if (pos > tftp_tsize)
264 pos = tftp_tsize;
Simon Glassf5329bb2011-10-24 18:00:03 +0000265
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500266 while (tftp_tsize_num_hash < pos * 50 / tftp_tsize) {
Simon Glassf5329bb2011-10-24 18:00:03 +0000267 putc('#');
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500268 tftp_tsize_num_hash++;
Simon Glassf5329bb2011-10-24 18:00:03 +0000269 }
Simon Glass1fb7cd42011-10-24 18:00:07 +0000270 } else
Simon Glassf5329bb2011-10-24 18:00:03 +0000271#endif
Simon Glass1fb7cd42011-10-24 18:00:07 +0000272 {
Ravik Hasijade5468e2020-05-07 14:55:32 -0700273 pos = (tftp_cur_block - 1) +
274 (tftp_block_wrap * TFTP_SEQUENCE_SIZE);
275 if ((pos % 10) == 0)
Simon Glassf5329bb2011-10-24 18:00:03 +0000276 putc('#');
Ravik Hasijade5468e2020-05-07 14:55:32 -0700277 else if (((pos + 1) % (10 * HASHES_PER_LINE)) == 0)
Simon Glassf5329bb2011-10-24 18:00:03 +0000278 puts("\n\t ");
279 }
280}
281
Simon Glasse4cde2f2011-10-24 18:00:04 +0000282/**
283 * restart the current transfer due to an error
284 *
285 * @param msg Message to print for user
286 */
287static void restart(const char *msg)
288{
289 printf("\n%s; starting again\n", msg);
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500290 net_start_again();
Simon Glasse4cde2f2011-10-24 18:00:04 +0000291}
292
293/*
294 * Check if the block number has wrapped, and update progress
295 *
296 * TODO: The egregious use of global variables in this file should be tidied.
297 */
298static void update_block_number(void)
299{
300 /*
301 * RFC1350 specifies that the first data packet will
302 * have sequence number 1. If we receive a sequence
303 * number of 0 this means that there was a wrap
304 * around of the (16 bit) counter.
305 */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500306 if (tftp_cur_block == 0 && tftp_prev_block != 0) {
307 tftp_block_wrap++;
308 tftp_block_wrap_offset += tftp_block_size * TFTP_SEQUENCE_SIZE;
309 timeout_count = 0; /* we've done well, reset the timeout */
Simon Glasse4cde2f2011-10-24 18:00:04 +0000310 }
Ravik Hasijade5468e2020-05-07 14:55:32 -0700311 show_block_marker();
Simon Glasse4cde2f2011-10-24 18:00:04 +0000312}
313
Simon Glassf5329bb2011-10-24 18:00:03 +0000314/* The TFTP get or put is complete */
315static void tftp_complete(void)
316{
317#ifdef CONFIG_TFTP_TSIZE
318 /* Print hash marks for the last packet received */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500319 while (tftp_tsize && tftp_tsize_num_hash < 49) {
Simon Glassf5329bb2011-10-24 18:00:03 +0000320 putc('#');
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500321 tftp_tsize_num_hash++;
Simon Glassf5329bb2011-10-24 18:00:03 +0000322 }
Simon Glass8104f542014-10-10 07:30:21 -0600323 puts(" ");
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500324 print_size(tftp_tsize, "");
Simon Glassf5329bb2011-10-24 18:00:03 +0000325#endif
Simon Glass85b19802012-10-11 13:57:36 +0000326 time_start = get_timer(time_start);
327 if (time_start > 0) {
328 puts("\n\t "); /* Line up with "Loading: " */
Joe Hershberger14111572015-04-08 01:41:02 -0500329 print_size(net_boot_file_size /
Simon Glass85b19802012-10-11 13:57:36 +0000330 time_start * 1000, "/s");
331 }
Simon Glassf5329bb2011-10-24 18:00:03 +0000332 puts("\ndone\n");
Heinrich Schuchardt5f595182021-01-12 12:46:24 +0100333 if (IS_ENABLED(CONFIG_CMD_BOOTEFI)) {
334 if (!tftp_put_active)
335 efi_set_bootdev("Net", "", tftp_filename,
336 map_sysmem(tftp_load_addr, 0),
337 net_boot_file_size);
338 }
Joe Hershberger22f6e992012-05-23 07:59:14 +0000339 net_set_state(NETLOOP_SUCCESS);
Simon Glassf5329bb2011-10-24 18:00:03 +0000340}
341
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500342static void tftp_send(void)
wdenkfe8c2802002-11-03 00:38:21 +0000343{
Simon Glass1fb7cd42011-10-24 18:00:07 +0000344 uchar *pkt;
Joe Hershbergerdb288a92012-05-15 08:59:04 +0000345 uchar *xp;
346 int len = 0;
347 ushort *s;
Ravik Hasija08139212020-05-18 21:35:43 -0700348 bool err_pkt = false;
wdenkfe8c2802002-11-03 00:38:21 +0000349
350 /*
351 * We will always be sending some sort of packet, so
352 * cobble together the packet headers now.
353 */
Joe Hershberger1203fcc2015-04-08 01:41:05 -0500354 pkt = net_tx_packet + net_eth_hdr_size() + IP_UDP_HDR_SIZE;
wdenkfe8c2802002-11-03 00:38:21 +0000355
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500356 switch (tftp_state) {
Luca Ceresolie3fb0ab2011-05-17 00:03:38 +0000357 case STATE_SEND_RRQ:
Simon Glass1fb7cd42011-10-24 18:00:07 +0000358 case STATE_SEND_WRQ:
wdenkfe8c2802002-11-03 00:38:21 +0000359 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200360 s = (ushort *)pkt;
Simon Glass8c6914f2011-10-27 06:24:29 +0000361#ifdef CONFIG_CMD_TFTPPUT
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500362 *s++ = htons(tftp_state == STATE_SEND_RRQ ? TFTP_RRQ :
Simon Glass1fb7cd42011-10-24 18:00:07 +0000363 TFTP_WRQ);
Simon Glass8c6914f2011-10-27 06:24:29 +0000364#else
365 *s++ = htons(TFTP_RRQ);
366#endif
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200367 pkt = (uchar *)s;
Luca Ceresolic718b142011-05-14 05:49:57 +0000368 strcpy((char *)pkt, tftp_filename);
wdenkfe8c2802002-11-03 00:38:21 +0000369 pkt += strlen(tftp_filename) + 1;
Luca Ceresolic718b142011-05-14 05:49:57 +0000370 strcpy((char *)pkt, "octet");
wdenkfe8c2802002-11-03 00:38:21 +0000371 pkt += 5 /*strlen("octet")*/ + 1;
Luca Ceresolic718b142011-05-14 05:49:57 +0000372 strcpy((char *)pkt, "timeout");
wdenkfbe4b5c2003-10-06 21:55:32 +0000373 pkt += 7 /*strlen("timeout")*/ + 1;
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500374 sprintf((char *)pkt, "%lu", timeout_ms / 1000);
Robin Getz0ebf04c2009-07-23 03:01:03 -0400375 debug("send option \"timeout %s\"\n", (char *)pkt);
wdenkfbe4b5c2003-10-06 21:55:32 +0000376 pkt += strlen((char *)pkt) + 1;
Robin Getz4fccb812009-08-20 10:50:20 -0400377#ifdef CONFIG_TFTP_TSIZE
Joe Hershberger14111572015-04-08 01:41:02 -0500378 pkt += sprintf((char *)pkt, "tsize%c%u%c",
379 0, net_boot_file_size, 0);
Robin Getz4fccb812009-08-20 10:50:20 -0400380#endif
David Updegraff53a5c422007-06-11 10:41:07 -0500381 /* try for more effic. blk size */
Luca Ceresolic718b142011-05-14 05:49:57 +0000382 pkt += sprintf((char *)pkt, "blksize%c%d%c",
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500383 0, tftp_block_size_option, 0);
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300384
385 /* try for more effic. window size.
386 * Implemented only for tftp get.
387 * Don't bother sending if it's 1
388 */
389 if (tftp_state == STATE_SEND_RRQ && tftp_window_size_option > 1)
390 pkt += sprintf((char *)pkt, "windowsize%c%d%c",
391 0, tftp_window_size_option, 0);
wdenkfe8c2802002-11-03 00:38:21 +0000392 len = pkt - xp;
393 break;
394
wdenkfbe4b5c2003-10-06 21:55:32 +0000395 case STATE_OACK:
Luca Ceresolie59e3562011-05-17 00:03:39 +0000396
397 case STATE_RECV_WRQ:
David Updegraff53a5c422007-06-11 10:41:07 -0500398 case STATE_DATA:
wdenkfe8c2802002-11-03 00:38:21 +0000399 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200400 s = (ushort *)pkt;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000401 s[0] = htons(TFTP_ACK);
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500402 s[1] = htons(tftp_cur_block);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000403 pkt = (uchar *)(s + 2);
404#ifdef CONFIG_CMD_TFTPPUT
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500405 if (tftp_put_active) {
406 int toload = tftp_block_size;
407 int loaded = load_block(tftp_cur_block, pkt, toload);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000408
409 s[0] = htons(TFTP_DATA);
410 pkt += loaded;
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500411 tftp_put_final_block_sent = (loaded < toload);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000412 }
413#endif
wdenkfe8c2802002-11-03 00:38:21 +0000414 len = pkt - xp;
415 break;
416
417 case STATE_TOO_LARGE:
418 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200419 s = (ushort *)pkt;
420 *s++ = htons(TFTP_ERROR);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000421 *s++ = htons(3);
422
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200423 pkt = (uchar *)s;
Luca Ceresolic718b142011-05-14 05:49:57 +0000424 strcpy((char *)pkt, "File too large");
wdenkfe8c2802002-11-03 00:38:21 +0000425 pkt += 14 /*strlen("File too large")*/ + 1;
426 len = pkt - xp;
Ravik Hasija08139212020-05-18 21:35:43 -0700427 err_pkt = true;
wdenkfe8c2802002-11-03 00:38:21 +0000428 break;
429
430 case STATE_BAD_MAGIC:
431 xp = pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200432 s = (ushort *)pkt;
433 *s++ = htons(TFTP_ERROR);
434 *s++ = htons(2);
435 pkt = (uchar *)s;
Luca Ceresolic718b142011-05-14 05:49:57 +0000436 strcpy((char *)pkt, "File has bad magic");
wdenkfe8c2802002-11-03 00:38:21 +0000437 pkt += 18 /*strlen("File has bad magic")*/ + 1;
438 len = pkt - xp;
Ravik Hasija08139212020-05-18 21:35:43 -0700439 err_pkt = true;
440 break;
441
442 case STATE_INVALID_OPTION:
443 xp = pkt;
444 s = (ushort *)pkt;
445 *s++ = htons(TFTP_ERROR);
446 *s++ = htons(TFTP_ERR_OPTION_NEGOTIATION);
447 pkt = (uchar *)s;
448 strcpy((char *)pkt, "Option Negotiation Failed");
449 /* strlen("Option Negotiation Failed") + NULL*/
450 pkt += 25 + 1;
451 len = pkt - xp;
452 err_pkt = true;
wdenkfe8c2802002-11-03 00:38:21 +0000453 break;
454 }
455
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500456 net_send_udp_packet(net_server_ethaddr, tftp_remote_ip,
457 tftp_remote_port, tftp_our_port, len);
Ravik Hasija08139212020-05-18 21:35:43 -0700458
459 if (err_pkt)
460 net_set_state(NETLOOP_FAIL);
wdenkfe8c2802002-11-03 00:38:21 +0000461}
462
Simon Glass39bccd22011-10-26 14:18:38 +0000463#ifdef CONFIG_CMD_TFTPPUT
Simon Glass1fb7cd42011-10-24 18:00:07 +0000464static void icmp_handler(unsigned type, unsigned code, unsigned dest,
Joe Hershberger049a95a2015-04-08 01:41:01 -0500465 struct in_addr sip, unsigned src, uchar *pkt,
466 unsigned len)
Simon Glass1fb7cd42011-10-24 18:00:07 +0000467{
468 if (type == ICMP_NOT_REACH && code == ICMP_NOT_REACH_PORT) {
469 /* Oh dear the other end has gone away */
470 restart("TFTP server died");
471 }
472}
Simon Glass39bccd22011-10-26 14:18:38 +0000473#endif
Simon Glass1fb7cd42011-10-24 18:00:07 +0000474
Joe Hershberger049a95a2015-04-08 01:41:01 -0500475static void tftp_handler(uchar *pkt, unsigned dest, struct in_addr sip,
476 unsigned src, unsigned len)
wdenkfe8c2802002-11-03 00:38:21 +0000477{
Kim Phillips61fdd4f2013-01-16 18:09:19 -0600478 __be16 proto;
479 __be16 *s;
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200480 int i;
Ravik Hasija08139212020-05-18 21:35:43 -0700481 u16 timeout_val_rcvd;
wdenkfe8c2802002-11-03 00:38:21 +0000482
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500483 if (dest != tftp_our_port) {
Luca Ceresoli0bdd8ac2011-05-14 05:50:02 +0000484 return;
wdenkfe8c2802002-11-03 00:38:21 +0000485 }
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500486 if (tftp_state != STATE_SEND_RRQ && src != tftp_remote_port &&
487 tftp_state != STATE_RECV_WRQ && tftp_state != STATE_SEND_WRQ)
wdenkfe8c2802002-11-03 00:38:21 +0000488 return;
wdenkfe8c2802002-11-03 00:38:21 +0000489
Luca Ceresoli7bc325a2011-05-14 05:50:00 +0000490 if (len < 2)
wdenkfe8c2802002-11-03 00:38:21 +0000491 return;
wdenkfe8c2802002-11-03 00:38:21 +0000492 len -= 2;
493 /* warning: don't use increment (++) in ntohs() macros!! */
Kim Phillips61fdd4f2013-01-16 18:09:19 -0600494 s = (__be16 *)pkt;
Wolfgang Denk7bc5ee02005-08-26 01:36:03 +0200495 proto = *s++;
496 pkt = (uchar *)s;
wdenkfe8c2802002-11-03 00:38:21 +0000497 switch (ntohs(proto)) {
wdenkfe8c2802002-11-03 00:38:21 +0000498 case TFTP_RRQ:
wdenkfe8c2802002-11-03 00:38:21 +0000499 break;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000500
501 case TFTP_ACK:
502#ifdef CONFIG_CMD_TFTPPUT
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500503 if (tftp_put_active) {
504 if (tftp_put_final_block_sent) {
Simon Glass1fb7cd42011-10-24 18:00:07 +0000505 tftp_complete();
506 } else {
507 /*
508 * Move to the next block. We want our block
509 * count to wrap just like the other end!
510 */
511 int block = ntohs(*s);
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500512 int ack_ok = (tftp_cur_block == block);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000513
Ley Foon Tan6bf46362020-08-25 10:26:35 +0800514 tftp_prev_block = tftp_cur_block;
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500515 tftp_cur_block = (unsigned short)(block + 1);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000516 update_block_number();
517 if (ack_ok)
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500518 tftp_send(); /* Send next data block */
Simon Glass1fb7cd42011-10-24 18:00:07 +0000519 }
520 }
521#endif
522 break;
523
wdenkfe8c2802002-11-03 00:38:21 +0000524 default:
525 break;
526
Luca Ceresolie59e3562011-05-17 00:03:39 +0000527#ifdef CONFIG_CMD_TFTPSRV
528 case TFTP_WRQ:
529 debug("Got WRQ\n");
Joe Hershberger049a95a2015-04-08 01:41:01 -0500530 tftp_remote_ip = sip;
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500531 tftp_remote_port = src;
532 tftp_our_port = 1024 + (get_timer(0) % 3072);
Simon Glasse4cde2f2011-10-24 18:00:04 +0000533 new_transfer();
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500534 tftp_send(); /* Send ACK(0) */
Luca Ceresolie59e3562011-05-17 00:03:39 +0000535 break;
536#endif
537
wdenkfbe4b5c2003-10-06 21:55:32 +0000538 case TFTP_OACK:
Ravik Hasija08139212020-05-18 21:35:43 -0700539 debug("Got OACK: ");
540 for (i = 0; i < len; i++) {
541 if (pkt[i] == '\0')
542 debug(" ");
543 else
544 debug("%c", pkt[i]);
545 }
546 debug("\n");
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500547 tftp_state = STATE_OACK;
548 tftp_remote_port = src;
Wolfgang Denk60174742007-08-31 10:01:51 +0200549 /*
550 * Check for 'blksize' option.
551 * Careful: "i" is signed, "len" is unsigned, thus
552 * something like "len-8" may give a *huge* number
553 */
Luca Ceresolic718b142011-05-14 05:49:57 +0000554 for (i = 0; i+8 < len; i++) {
Ravik Hasija08139212020-05-18 21:35:43 -0700555 if (strcasecmp((char *)pkt + i, "blksize") == 0) {
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500556 tftp_block_size = (unsigned short)
Simon Glass0b1284e2021-07-24 09:03:30 -0600557 dectoul((char *)pkt + i + 8, NULL);
Ravik Hasija08139212020-05-18 21:35:43 -0700558 debug("Blocksize oack: %s, %d\n",
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500559 (char *)pkt + i + 8, tftp_block_size);
Ravik Hasija08139212020-05-18 21:35:43 -0700560 if (tftp_block_size > tftp_block_size_option) {
561 printf("Invalid blk size(=%d)\n",
562 tftp_block_size);
563 tftp_state = STATE_INVALID_OPTION;
564 }
565 }
566 if (strcasecmp((char *)pkt + i, "timeout") == 0) {
567 timeout_val_rcvd = (unsigned short)
Simon Glass0b1284e2021-07-24 09:03:30 -0600568 dectoul((char *)pkt + i + 8, NULL);
Ravik Hasija08139212020-05-18 21:35:43 -0700569 debug("Timeout oack: %s, %d\n",
570 (char *)pkt + i + 8, timeout_val_rcvd);
571 if (timeout_val_rcvd != (timeout_ms / 1000)) {
572 printf("Invalid timeout val(=%d s)\n",
573 timeout_val_rcvd);
574 tftp_state = STATE_INVALID_OPTION;
575 }
Wolfgang Denkff13ac82007-08-30 14:42:15 +0200576 }
Robin Getz4fccb812009-08-20 10:50:20 -0400577#ifdef CONFIG_TFTP_TSIZE
Ravik Hasija08139212020-05-18 21:35:43 -0700578 if (strcasecmp((char *)pkt + i, "tsize") == 0) {
Simon Glass0b1284e2021-07-24 09:03:30 -0600579 tftp_tsize = dectoul((char *)pkt + i + 6,
580 NULL);
Robin Getz4fccb812009-08-20 10:50:20 -0400581 debug("size = %s, %d\n",
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500582 (char *)pkt + i + 6, tftp_tsize);
Robin Getz4fccb812009-08-20 10:50:20 -0400583 }
584#endif
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300585 if (strcasecmp((char *)pkt + i, "windowsize") == 0) {
586 tftp_windowsize =
Simon Glass0b1284e2021-07-24 09:03:30 -0600587 dectoul((char *)pkt + i + 11, NULL);
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300588 debug("windowsize = %s, %d\n",
589 (char *)pkt + i + 11, tftp_windowsize);
590 }
David Updegraff53a5c422007-06-11 10:41:07 -0500591 }
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300592
593 tftp_next_ack = tftp_windowsize;
594
Simon Glass1fb7cd42011-10-24 18:00:07 +0000595#ifdef CONFIG_CMD_TFTPPUT
Ravik Hasija08139212020-05-18 21:35:43 -0700596 if (tftp_put_active && tftp_state == STATE_OACK) {
Simon Glass1fb7cd42011-10-24 18:00:07 +0000597 /* Get ready to send the first block */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500598 tftp_state = STATE_DATA;
599 tftp_cur_block++;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000600 }
601#endif
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500602 tftp_send(); /* Send ACK or first data block */
wdenkfbe4b5c2003-10-06 21:55:32 +0000603 break;
wdenkfe8c2802002-11-03 00:38:21 +0000604 case TFTP_DATA:
605 if (len < 2)
606 return;
607 len -= 2;
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300608
609 if (ntohs(*(__be16 *)pkt) != (ushort)(tftp_cur_block + 1)) {
610 debug("Received unexpected block: %d, expected: %d\n",
611 ntohs(*(__be16 *)pkt),
612 (ushort)(tftp_cur_block + 1));
613 /*
614 * If one packet is dropped most likely
615 * all other buffers in the window
616 * that will arrive will cause a sending NACK.
617 * This just overwellms the server, let's just send one.
618 */
619 if (tftp_last_nack != tftp_cur_block) {
620 tftp_send();
621 tftp_last_nack = tftp_cur_block;
622 tftp_next_ack = (ushort)(tftp_cur_block +
623 tftp_windowsize);
624 }
625 break;
626 }
627
628 tftp_cur_block++;
629 tftp_cur_block %= TFTP_SEQUENCE_SIZE;
wdenk3f85ce22004-02-23 16:11:30 +0000630
Harm Berntsenbeb61e12020-11-27 21:45:56 +0000631 if (tftp_state == STATE_SEND_RRQ) {
Ravik Hasija08139212020-05-18 21:35:43 -0700632 debug("Server did not acknowledge any options!\n");
Harm Berntsenbeb61e12020-11-27 21:45:56 +0000633 tftp_next_ack = tftp_windowsize;
634 }
wdenkfbe4b5c2003-10-06 21:55:32 +0000635
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500636 if (tftp_state == STATE_SEND_RRQ || tftp_state == STATE_OACK ||
637 tftp_state == STATE_RECV_WRQ) {
wdenk3f85ce22004-02-23 16:11:30 +0000638 /* first block received */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500639 tftp_state = STATE_DATA;
640 tftp_remote_port = src;
Simon Glasse4cde2f2011-10-24 18:00:04 +0000641 new_transfer();
wdenkfe8c2802002-11-03 00:38:21 +0000642
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500643 if (tftp_cur_block != 1) { /* Assertion */
644 puts("\nTFTP error: ");
645 printf("First block is not block 1 (%ld)\n",
646 tftp_cur_block);
647 puts("Starting again\n\n");
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500648 net_start_again();
wdenkfe8c2802002-11-03 00:38:21 +0000649 break;
650 }
651 }
652
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500653 if (tftp_cur_block == tftp_prev_block) {
654 /* Same block again; ignore it. */
wdenkfe8c2802002-11-03 00:38:21 +0000655 break;
656 }
657
Ravik Hasijade5468e2020-05-07 14:55:32 -0700658 update_block_number();
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500659 tftp_prev_block = tftp_cur_block;
Albert ARIBAUD \(3ADEV\)f5fb7342015-10-12 00:02:57 +0200660 timeout_count_max = tftp_timeout_count_max;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500661 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
wdenkfe8c2802002-11-03 00:38:21 +0000662
Ley Foon Tanae0bdf02020-08-25 10:26:36 +0800663 if (store_block(tftp_cur_block, pkt + 2, len)) {
Simon Goldschmidta156c472019-01-14 22:38:22 +0100664 eth_halt();
665 net_set_state(NETLOOP_FAIL);
666 break;
667 }
wdenkfe8c2802002-11-03 00:38:21 +0000668
Ramon Fried2dddc1b2021-02-03 21:28:59 +0200669 if (len < tftp_block_size) {
670 tftp_send();
671 tftp_complete();
672 break;
673 }
674
wdenkfe8c2802002-11-03 00:38:21 +0000675 /*
Luca Ceresoli4d69e982011-05-17 00:03:41 +0000676 * Acknowledge the block just received, which will prompt
Luca Ceresoli20478ce2011-05-17 00:03:37 +0000677 * the remote for the next one.
wdenkfe8c2802002-11-03 00:38:21 +0000678 */
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300679 if (tftp_cur_block == tftp_next_ack) {
680 tftp_send();
681 tftp_next_ack += tftp_windowsize;
682 }
wdenkfe8c2802002-11-03 00:38:21 +0000683 break;
684
685 case TFTP_ERROR:
Luca Ceresolic718b142011-05-14 05:49:57 +0000686 printf("\nTFTP error: '%s' (%d)\n",
Kim Phillips61fdd4f2013-01-16 18:09:19 -0600687 pkt + 2, ntohs(*(__be16 *)pkt));
Remy Bohmeraafda382009-10-28 22:13:40 +0100688
Kim Phillips61fdd4f2013-01-16 18:09:19 -0600689 switch (ntohs(*(__be16 *)pkt)) {
Remy Bohmeraafda382009-10-28 22:13:40 +0100690 case TFTP_ERR_FILE_NOT_FOUND:
691 case TFTP_ERR_ACCESS_DENIED:
692 puts("Not retrying...\n");
693 eth_halt();
Joe Hershberger22f6e992012-05-23 07:59:14 +0000694 net_set_state(NETLOOP_FAIL);
Remy Bohmeraafda382009-10-28 22:13:40 +0100695 break;
696 case TFTP_ERR_UNDEFINED:
697 case TFTP_ERR_DISK_FULL:
698 case TFTP_ERR_UNEXPECTED_OPCODE:
699 case TFTP_ERR_UNKNOWN_TRANSFER_ID:
700 case TFTP_ERR_FILE_ALREADY_EXISTS:
701 default:
702 puts("Starting again\n\n");
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500703 net_start_again();
Remy Bohmeraafda382009-10-28 22:13:40 +0100704 break;
705 }
wdenkfe8c2802002-11-03 00:38:21 +0000706 break;
707 }
708}
709
710
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500711static void tftp_timeout_handler(void)
wdenkfe8c2802002-11-03 00:38:21 +0000712{
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500713 if (++timeout_count > timeout_count_max) {
Simon Glasse4cde2f2011-10-24 18:00:04 +0000714 restart("Retry count exceeded");
wdenkfe8c2802002-11-03 00:38:21 +0000715 } else {
Luca Ceresolic718b142011-05-14 05:49:57 +0000716 puts("T ");
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500717 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500718 if (tftp_state != STATE_RECV_WRQ)
719 tftp_send();
wdenkfe8c2802002-11-03 00:38:21 +0000720 }
721}
722
Simon Glassbb872dd2019-12-28 10:45:02 -0700723/* Initialize tftp_load_addr and tftp_load_size from image_load_addr and lmb */
Simon Goldschmidta156c472019-01-14 22:38:22 +0100724static int tftp_init_load_addr(void)
725{
726#ifdef CONFIG_LMB
727 struct lmb lmb;
728 phys_size_t max_size;
729
Simon Goldschmidt9cc23232019-01-26 22:13:04 +0100730 lmb_init_and_reserve(&lmb, gd->bd, (void *)gd->fdt_blob);
Simon Goldschmidta156c472019-01-14 22:38:22 +0100731
Simon Glassbb872dd2019-12-28 10:45:02 -0700732 max_size = lmb_get_free_size(&lmb, image_load_addr);
Simon Goldschmidta156c472019-01-14 22:38:22 +0100733 if (!max_size)
734 return -1;
735
736 tftp_load_size = max_size;
737#endif
Simon Glassbb872dd2019-12-28 10:45:02 -0700738 tftp_load_addr = image_load_addr;
Simon Goldschmidta156c472019-01-14 22:38:22 +0100739 return 0;
740}
wdenkfe8c2802002-11-03 00:38:21 +0000741
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500742void tftp_start(enum proto_t protocol)
wdenkfe8c2802002-11-03 00:38:21 +0000743{
Albert ARIBAUD \(3ADEV\)f5fb7342015-10-12 00:02:57 +0200744#if CONFIG_NET_TFTP_VARS
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200745 char *ep; /* Environment pointer */
Alessandro Rubini89ba81d2009-08-07 13:59:06 +0200746
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100747 /*
748 * Allow the user to choose TFTP blocksize and timeout.
749 * TFTP protocol has a minimal timeout of 1 second.
750 */
Albert ARIBAUD \(3ADEV\)f5fb7342015-10-12 00:02:57 +0200751
Simon Glass00caae62017-08-03 12:22:12 -0600752 ep = env_get("tftpblocksize");
Luca Ceresoli2cb53602011-05-14 05:49:59 +0000753 if (ep != NULL)
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500754 tftp_block_size_option = simple_strtol(ep, NULL, 10);
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100755
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300756 ep = env_get("tftpwindowsize");
757 if (ep != NULL)
758 tftp_window_size_option = simple_strtol(ep, NULL, 10);
759
Simon Glass00caae62017-08-03 12:22:12 -0600760 ep = env_get("tftptimeout");
Luca Ceresoli2cb53602011-05-14 05:49:59 +0000761 if (ep != NULL)
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500762 timeout_ms = simple_strtol(ep, NULL, 10);
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100763
Bin Mengaf2ca592015-08-27 22:25:51 -0700764 if (timeout_ms < 1000) {
765 printf("TFTP timeout (%ld ms) too low, set min = 1000 ms\n",
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500766 timeout_ms);
Bin Mengaf2ca592015-08-27 22:25:51 -0700767 timeout_ms = 1000;
Wolfgang Denkc96f86e2010-01-17 23:55:53 +0100768 }
769
Simon Glass00caae62017-08-03 12:22:12 -0600770 ep = env_get("tftptimeoutcountmax");
Albert ARIBAUD \(3ADEV\)f5fb7342015-10-12 00:02:57 +0200771 if (ep != NULL)
772 tftp_timeout_count_max = simple_strtol(ep, NULL, 10);
773
774 if (tftp_timeout_count_max < 0) {
775 printf("TFTP timeout count max (%d ms) negative, set to 0\n",
776 tftp_timeout_count_max);
777 tftp_timeout_count_max = 0;
778 }
779#endif
780
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300781 debug("TFTP blocksize = %i, TFTP windowsize = %d timeout = %ld ms\n",
782 tftp_block_size_option, tftp_window_size_option, timeout_ms);
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200783
Joe Hershberger049a95a2015-04-08 01:41:01 -0500784 tftp_remote_ip = net_server_ip;
Joe Hershberger6ab12832018-07-03 19:36:43 -0500785 if (!net_parse_bootfile(&tftp_remote_ip, tftp_filename, MAX_LEN)) {
Matthias Weisserea45cb02011-12-03 03:29:44 +0000786 sprintf(default_filename, "%02X%02X%02X%02X.img",
Joe Hershberger049a95a2015-04-08 01:41:01 -0500787 net_ip.s_addr & 0xFF,
788 (net_ip.s_addr >> 8) & 0xFF,
789 (net_ip.s_addr >> 16) & 0xFF,
790 (net_ip.s_addr >> 24) & 0xFF);
Jean-Christophe PLAGNIOL-VILLARDa93907c2008-01-18 01:14:03 +0100791
Vladimir Zapolskiy0c17b1b2017-06-28 22:56:07 +0300792 strncpy(tftp_filename, default_filename, DEFAULT_NAME_LEN);
793 tftp_filename[DEFAULT_NAME_LEN - 1] = 0;
wdenkfe8c2802002-11-03 00:38:21 +0000794
Luca Ceresolic718b142011-05-14 05:49:57 +0000795 printf("*** Warning: no boot file name; using '%s'\n",
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500796 tftp_filename);
wdenkfe8c2802002-11-03 00:38:21 +0000797 }
798
Luca Ceresolic718b142011-05-14 05:49:57 +0000799 printf("Using %s device\n", eth_get_name());
Simon Glass1fb7cd42011-10-24 18:00:07 +0000800 printf("TFTP %s server %pI4; our IP address is %pI4",
Simon Glass8c6914f2011-10-27 06:24:29 +0000801#ifdef CONFIG_CMD_TFTPPUT
802 protocol == TFTPPUT ? "to" : "from",
803#else
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500804 "from",
Simon Glass8c6914f2011-10-27 06:24:29 +0000805#endif
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500806 &tftp_remote_ip, &net_ip);
wdenkfe8c2802002-11-03 00:38:21 +0000807
808 /* Check if we need to send across this subnet */
Joe Hershberger049a95a2015-04-08 01:41:01 -0500809 if (net_gateway.s_addr && net_netmask.s_addr) {
810 struct in_addr our_net;
811 struct in_addr remote_net;
wdenkfe8c2802002-11-03 00:38:21 +0000812
Joe Hershberger049a95a2015-04-08 01:41:01 -0500813 our_net.s_addr = net_ip.s_addr & net_netmask.s_addr;
814 remote_net.s_addr = tftp_remote_ip.s_addr & net_netmask.s_addr;
815 if (our_net.s_addr != remote_net.s_addr)
816 printf("; sending through gateway %pI4", &net_gateway);
wdenkfe8c2802002-11-03 00:38:21 +0000817 }
Luca Ceresolic718b142011-05-14 05:49:57 +0000818 putc('\n');
wdenkfe8c2802002-11-03 00:38:21 +0000819
Luca Ceresolic718b142011-05-14 05:49:57 +0000820 printf("Filename '%s'.", tftp_filename);
wdenkfe8c2802002-11-03 00:38:21 +0000821
Joe Hershberger14111572015-04-08 01:41:02 -0500822 if (net_boot_file_expected_size_in_blocks) {
823 printf(" Size is 0x%x Bytes = ",
824 net_boot_file_expected_size_in_blocks << 9);
825 print_size(net_boot_file_expected_size_in_blocks << 9, "");
wdenkfe8c2802002-11-03 00:38:21 +0000826 }
827
Luca Ceresolic718b142011-05-14 05:49:57 +0000828 putc('\n');
Simon Glass1fb7cd42011-10-24 18:00:07 +0000829#ifdef CONFIG_CMD_TFTPPUT
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500830 tftp_put_active = (protocol == TFTPPUT);
831 if (tftp_put_active) {
Simon Glassbb872dd2019-12-28 10:45:02 -0700832 printf("Save address: 0x%lx\n", image_save_addr);
833 printf("Save size: 0x%lx\n", image_save_size);
834 net_boot_file_size = image_save_size;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000835 puts("Saving: *\b");
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500836 tftp_state = STATE_SEND_WRQ;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000837 new_transfer();
838 } else
839#endif
840 {
Simon Goldschmidta156c472019-01-14 22:38:22 +0100841 if (tftp_init_load_addr()) {
842 eth_halt();
843 net_set_state(NETLOOP_FAIL);
844 puts("\nTFTP error: ");
845 puts("trying to overwrite reserved memory...\n");
846 return;
847 }
848 printf("Load address: 0x%lx\n", tftp_load_addr);
Simon Glass1fb7cd42011-10-24 18:00:07 +0000849 puts("Loading: *\b");
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500850 tftp_state = STATE_SEND_RRQ;
Simon Glass1fb7cd42011-10-24 18:00:07 +0000851 }
wdenkfe8c2802002-11-03 00:38:21 +0000852
Simon Glass85b19802012-10-11 13:57:36 +0000853 time_start = get_timer(0);
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500854 timeout_count_max = tftp_timeout_count_max;
Bartlomiej Siekae83cc062008-10-01 15:26:29 +0200855
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500856 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
Joe Hershberger049a95a2015-04-08 01:41:01 -0500857 net_set_udp_handler(tftp_handler);
Simon Glass39bccd22011-10-26 14:18:38 +0000858#ifdef CONFIG_CMD_TFTPPUT
Simon Glass1fb7cd42011-10-24 18:00:07 +0000859 net_set_icmp_handler(icmp_handler);
Simon Glass39bccd22011-10-26 14:18:38 +0000860#endif
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500861 tftp_remote_port = WELL_KNOWN_PORT;
862 timeout_count = 0;
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200863 /* Use a pseudo-random port unless a specific port is set */
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500864 tftp_our_port = 1024 + (get_timer(0) % 3072);
David Updegraff53a5c422007-06-11 10:41:07 -0500865
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200866#ifdef CONFIG_TFTP_PORT
Simon Glass00caae62017-08-03 12:22:12 -0600867 ep = env_get("tftpdstp");
Luca Ceresoli7bc325a2011-05-14 05:50:00 +0000868 if (ep != NULL)
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500869 tftp_remote_port = simple_strtol(ep, NULL, 10);
Simon Glass00caae62017-08-03 12:22:12 -0600870 ep = env_get("tftpsrcp");
Luca Ceresoli7bc325a2011-05-14 05:50:00 +0000871 if (ep != NULL)
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500872 tftp_our_port = simple_strtol(ep, NULL, 10);
Wolfgang Denkecb0ccd2005-09-24 22:37:32 +0200873#endif
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500874 tftp_cur_block = 0;
Ramon Friedcc6b87e2020-07-18 23:31:46 +0300875 tftp_windowsize = 1;
876 tftp_last_nack = 0;
wdenk73a8b272003-06-05 19:27:42 +0000877 /* zero out server ether in case the server ip has changed */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500878 memset(net_server_ethaddr, 0, 6);
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500879 /* Revert tftp_block_size to dflt */
880 tftp_block_size = TFTP_BLOCK_SIZE;
Robin Getz4fccb812009-08-20 10:50:20 -0400881#ifdef CONFIG_TFTP_TSIZE
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500882 tftp_tsize = 0;
883 tftp_tsize_num_hash = 0;
Robin Getz4fccb812009-08-20 10:50:20 -0400884#endif
wdenk73a8b272003-06-05 19:27:42 +0000885
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500886 tftp_send();
wdenkfe8c2802002-11-03 00:38:21 +0000887}
888
Luca Ceresolie59e3562011-05-17 00:03:39 +0000889#ifdef CONFIG_CMD_TFTPSRV
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500890void tftp_start_server(void)
Luca Ceresolie59e3562011-05-17 00:03:39 +0000891{
892 tftp_filename[0] = 0;
893
Simon Goldschmidta156c472019-01-14 22:38:22 +0100894 if (tftp_init_load_addr()) {
895 eth_halt();
896 net_set_state(NETLOOP_FAIL);
897 puts("\nTFTP error: trying to overwrite reserved memory...\n");
898 return;
899 }
Luca Ceresolie59e3562011-05-17 00:03:39 +0000900 printf("Using %s device\n", eth_get_name());
Joe Hershberger049a95a2015-04-08 01:41:01 -0500901 printf("Listening for TFTP transfer on %pI4\n", &net_ip);
Simon Goldschmidta156c472019-01-14 22:38:22 +0100902 printf("Load address: 0x%lx\n", tftp_load_addr);
Luca Ceresolie59e3562011-05-17 00:03:39 +0000903
904 puts("Loading: *\b");
905
Albert ARIBAUD \(3ADEV\)f5fb7342015-10-12 00:02:57 +0200906 timeout_count_max = tftp_timeout_count_max;
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500907 timeout_count = 0;
908 timeout_ms = TIMEOUT;
Joe Hershbergerbc0571f2015-04-08 01:41:21 -0500909 net_set_timeout_handler(timeout_ms, tftp_timeout_handler);
Luca Ceresolie59e3562011-05-17 00:03:39 +0000910
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500911 /* Revert tftp_block_size to dflt */
912 tftp_block_size = TFTP_BLOCK_SIZE;
913 tftp_cur_block = 0;
914 tftp_our_port = WELL_KNOWN_PORT;
Luca Ceresolie59e3562011-05-17 00:03:39 +0000915
916#ifdef CONFIG_TFTP_TSIZE
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500917 tftp_tsize = 0;
918 tftp_tsize_num_hash = 0;
Luca Ceresolie59e3562011-05-17 00:03:39 +0000919#endif
920
Joe Hershberger8885c5f2015-04-08 01:41:07 -0500921 tftp_state = STATE_RECV_WRQ;
Joe Hershberger049a95a2015-04-08 01:41:01 -0500922 net_set_udp_handler(tftp_handler);
Andrew Ruder8e525332013-10-22 19:10:28 -0500923
924 /* zero out server ether in case the server ip has changed */
Joe Hershberger0adb5b72015-04-08 01:41:04 -0500925 memset(net_server_ethaddr, 0, 6);
Luca Ceresolie59e3562011-05-17 00:03:39 +0000926}
927#endif /* CONFIG_CMD_TFTPSRV */