1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * (C) Copyright 2000
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 */
6
7 /*
8 * Boot support
9 */
10 #include <common.h>
11 #include <command.h>
12 #include <net.h>
13
14 static int netboot_common(enum proto_t, cmd_tbl_t *, int, char * const []);
15
16 #ifdef CONFIG_CMD_BOOTP
do_bootp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])17 static int do_bootp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
18 {
19 return netboot_common(BOOTP, cmdtp, argc, argv);
20 }
21
22 U_BOOT_CMD(
23 bootp, 3, 1, do_bootp,
24 "boot image via network using BOOTP/TFTP protocol",
25 "[loadAddress] [[hostIPaddr:]bootfilename]"
26 );
27 #endif
28
29 #ifdef CONFIG_CMD_TFTPBOOT
do_tftpb(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])30 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
31 {
32 int ret;
33
34 bootstage_mark_name(BOOTSTAGE_KERNELREAD_START, "tftp_start");
35 ret = netboot_common(TFTPGET, cmdtp, argc, argv);
36 bootstage_mark_name(BOOTSTAGE_KERNELREAD_STOP, "tftp_done");
37 return ret;
38 }
39
40 U_BOOT_CMD(
41 tftpboot, 3, 1, do_tftpb,
42 "boot image via network using TFTP protocol",
43 "[loadAddress] [[hostIPaddr:]bootfilename]"
44 );
45 #endif
46
47 #ifdef CONFIG_CMD_TFTPPUT
do_tftpput(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])48 static int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
49 {
50 return netboot_common(TFTPPUT, cmdtp, argc, argv);
51 }
52
53 U_BOOT_CMD(
54 tftpput, 4, 1, do_tftpput,
55 "TFTP put command, for uploading files to a server",
56 "Address Size [[hostIPaddr:]filename]"
57 );
58 #endif
59
60 #ifdef CONFIG_CMD_TFTPSRV
do_tftpsrv(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])61 static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
62 {
63 return netboot_common(TFTPSRV, cmdtp, argc, argv);
64 }
65
66 U_BOOT_CMD(
67 tftpsrv, 2, 1, do_tftpsrv,
68 "act as a TFTP server and boot the first received file",
69 "[loadAddress]\n"
70 "Listen for an incoming TFTP transfer, receive a file and boot it.\n"
71 "The transfer is aborted if a transfer has not been started after\n"
72 "about 50 seconds or if Ctrl-C is pressed."
73 );
74 #endif
75
76
77 #ifdef CONFIG_CMD_RARP
do_rarpb(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])78 int do_rarpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
79 {
80 return netboot_common(RARP, cmdtp, argc, argv);
81 }
82
83 U_BOOT_CMD(
84 rarpboot, 3, 1, do_rarpb,
85 "boot image via network using RARP/TFTP protocol",
86 "[loadAddress] [[hostIPaddr:]bootfilename]"
87 );
88 #endif
89
90 #if defined(CONFIG_CMD_DHCP)
do_dhcp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])91 static int do_dhcp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
92 {
93 return netboot_common(DHCP, cmdtp, argc, argv);
94 }
95
96 U_BOOT_CMD(
97 dhcp, 3, 1, do_dhcp,
98 "boot image via network using DHCP/TFTP protocol",
99 "[loadAddress] [[hostIPaddr:]bootfilename]"
100 );
101 #endif
102
103 #if defined(CONFIG_CMD_NFS)
do_nfs(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])104 static int do_nfs(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
105 {
106 return netboot_common(NFS, cmdtp, argc, argv);
107 }
108
109 U_BOOT_CMD(
110 nfs, 3, 1, do_nfs,
111 "boot image via network using NFS protocol",
112 "[loadAddress] [[hostIPaddr:]bootfilename]"
113 );
114 #endif
115
netboot_update_env(void)116 static void netboot_update_env(void)
117 {
118 char tmp[22];
119
120 if (net_gateway.s_addr) {
121 ip_to_string(net_gateway, tmp);
122 env_set("gatewayip", tmp);
123 }
124
125 if (net_netmask.s_addr) {
126 ip_to_string(net_netmask, tmp);
127 env_set("netmask", tmp);
128 }
129
130 if (net_hostname[0])
131 env_set("hostname", net_hostname);
132
133 if (net_root_path[0])
134 env_set("rootpath", net_root_path);
135
136 if (net_ip.s_addr) {
137 ip_to_string(net_ip, tmp);
138 env_set("ipaddr", tmp);
139 }
140 #if !defined(CONFIG_BOOTP_SERVERIP)
141 /*
142 * Only attempt to change serverip if net/bootp.c:store_net_params()
143 * could have set it
144 */
145 if (net_server_ip.s_addr) {
146 ip_to_string(net_server_ip, tmp);
147 env_set("serverip", tmp);
148 }
149 #endif
150 if (net_dns_server.s_addr) {
151 ip_to_string(net_dns_server, tmp);
152 env_set("dnsip", tmp);
153 }
154 #if defined(CONFIG_BOOTP_DNS2)
155 if (net_dns_server2.s_addr) {
156 ip_to_string(net_dns_server2, tmp);
157 env_set("dnsip2", tmp);
158 }
159 #endif
160 if (net_nis_domain[0])
161 env_set("domain", net_nis_domain);
162
163 #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
164 if (net_ntp_time_offset) {
165 sprintf(tmp, "%d", net_ntp_time_offset);
166 env_set("timeoffset", tmp);
167 }
168 #endif
169 #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
170 if (net_ntp_server.s_addr) {
171 ip_to_string(net_ntp_server, tmp);
172 env_set("ntpserverip", tmp);
173 }
174 #endif
175 }
176
netboot_common(enum proto_t proto,cmd_tbl_t * cmdtp,int argc,char * const argv[])177 static int netboot_common(enum proto_t proto, cmd_tbl_t *cmdtp, int argc,
178 char * const argv[])
179 {
180 char *s;
181 char *end;
182 int rcode = 0;
183 int size;
184 ulong addr;
185
186 net_boot_file_name_explicit = false;
187
188 /* pre-set load_addr */
189 s = env_get("loadaddr");
190 if (s != NULL)
191 load_addr = simple_strtoul(s, NULL, 16);
192
193 switch (argc) {
194 case 1:
195 break;
196
197 case 2: /*
198 * Only one arg - accept two forms:
199 * Just load address, or just boot file name. The latter
200 * form must be written in a format which can not be
201 * mis-interpreted as a valid number.
202 */
203 addr = simple_strtoul(argv[1], &end, 16);
204 if (end == (argv[1] + strlen(argv[1]))) {
205 load_addr = addr;
206 } else {
207 net_boot_file_name_explicit = true;
208 copy_filename(net_boot_file_name, argv[1],
209 sizeof(net_boot_file_name));
210 }
211 break;
212
213 case 3:
214 load_addr = simple_strtoul(argv[1], NULL, 16);
215 net_boot_file_name_explicit = true;
216 copy_filename(net_boot_file_name, argv[2],
217 sizeof(net_boot_file_name));
218
219 break;
220
221 #ifdef CONFIG_CMD_TFTPPUT
222 case 4:
223 if (strict_strtoul(argv[1], 16, &save_addr) < 0 ||
224 strict_strtoul(argv[2], 16, &save_size) < 0) {
225 printf("Invalid address/size\n");
226 return CMD_RET_USAGE;
227 }
228 net_boot_file_name_explicit = true;
229 copy_filename(net_boot_file_name, argv[3],
230 sizeof(net_boot_file_name));
231 break;
232 #endif
233 default:
234 bootstage_error(BOOTSTAGE_ID_NET_START);
235 return CMD_RET_USAGE;
236 }
237 bootstage_mark(BOOTSTAGE_ID_NET_START);
238
239 size = net_loop(proto);
240 if (size < 0) {
241 bootstage_error(BOOTSTAGE_ID_NET_NETLOOP_OK);
242 return CMD_RET_FAILURE;
243 }
244 bootstage_mark(BOOTSTAGE_ID_NET_NETLOOP_OK);
245
246 /* net_loop ok, update environment */
247 netboot_update_env();
248
249 /* done if no file was loaded (no errors though) */
250 if (size == 0) {
251 bootstage_error(BOOTSTAGE_ID_NET_LOADED);
252 return CMD_RET_SUCCESS;
253 }
254
255 bootstage_mark(BOOTSTAGE_ID_NET_LOADED);
256
257 rcode = bootm_maybe_autostart(cmdtp, argv[0]);
258
259 if (rcode == CMD_RET_SUCCESS)
260 bootstage_mark(BOOTSTAGE_ID_NET_DONE);
261 else
262 bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
263 return rcode;
264 }
265
266 #if defined(CONFIG_CMD_PING)
do_ping(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])267 static int do_ping(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
268 {
269 if (argc < 2)
270 return CMD_RET_USAGE;
271
272 net_ping_ip = string_to_ip(argv[1]);
273 if (net_ping_ip.s_addr == 0)
274 return CMD_RET_USAGE;
275
276 if (net_loop(PING) < 0) {
277 printf("ping failed; host %s is not alive\n", argv[1]);
278 return CMD_RET_FAILURE;
279 }
280
281 printf("host %s is alive\n", argv[1]);
282
283 return CMD_RET_SUCCESS;
284 }
285
286 U_BOOT_CMD(
287 ping, 2, 1, do_ping,
288 "send ICMP ECHO_REQUEST to network host",
289 "pingAddress"
290 );
291 #endif
292
293 #if defined(CONFIG_CMD_CDP)
294
cdp_update_env(void)295 static void cdp_update_env(void)
296 {
297 char tmp[16];
298
299 if (cdp_appliance_vlan != htons(-1)) {
300 printf("CDP offered appliance VLAN %d\n",
301 ntohs(cdp_appliance_vlan));
302 vlan_to_string(cdp_appliance_vlan, tmp);
303 env_set("vlan", tmp);
304 net_our_vlan = cdp_appliance_vlan;
305 }
306
307 if (cdp_native_vlan != htons(-1)) {
308 printf("CDP offered native VLAN %d\n", ntohs(cdp_native_vlan));
309 vlan_to_string(cdp_native_vlan, tmp);
310 env_set("nvlan", tmp);
311 net_native_vlan = cdp_native_vlan;
312 }
313 }
314
do_cdp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])315 int do_cdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
316 {
317 int r;
318
319 r = net_loop(CDP);
320 if (r < 0) {
321 printf("cdp failed; perhaps not a CISCO switch?\n");
322 return CMD_RET_FAILURE;
323 }
324
325 cdp_update_env();
326
327 return CMD_RET_SUCCESS;
328 }
329
330 U_BOOT_CMD(
331 cdp, 1, 1, do_cdp,
332 "Perform CDP network configuration",
333 "\n"
334 );
335 #endif
336
337 #if defined(CONFIG_CMD_SNTP)
do_sntp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])338 int do_sntp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
339 {
340 char *toff;
341
342 if (argc < 2) {
343 net_ntp_server = env_get_ip("ntpserverip");
344 if (net_ntp_server.s_addr == 0) {
345 printf("ntpserverip not set\n");
346 return CMD_RET_FAILURE;
347 }
348 } else {
349 net_ntp_server = string_to_ip(argv[1]);
350 if (net_ntp_server.s_addr == 0) {
351 printf("Bad NTP server IP address\n");
352 return CMD_RET_FAILURE;
353 }
354 }
355
356 toff = env_get("timeoffset");
357 if (toff == NULL)
358 net_ntp_time_offset = 0;
359 else
360 net_ntp_time_offset = simple_strtol(toff, NULL, 10);
361
362 if (net_loop(SNTP) < 0) {
363 printf("SNTP failed: host %pI4 not responding\n",
364 &net_ntp_server);
365 return CMD_RET_FAILURE;
366 }
367
368 return CMD_RET_SUCCESS;
369 }
370
371 U_BOOT_CMD(
372 sntp, 2, 1, do_sntp,
373 "synchronize RTC via network",
374 "[NTP server IP]\n"
375 );
376 #endif
377
378 #if defined(CONFIG_CMD_DNS)
do_dns(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])379 int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
380 {
381 if (argc == 1)
382 return CMD_RET_USAGE;
383
384 /*
385 * We should check for a valid hostname:
386 * - Each label must be between 1 and 63 characters long
387 * - the entire hostname has a maximum of 255 characters
388 * - only the ASCII letters 'a' through 'z' (case-insensitive),
389 * the digits '0' through '9', and the hyphen
390 * - cannot begin or end with a hyphen
391 * - no other symbols, punctuation characters, or blank spaces are
392 * permitted
393 * but hey - this is a minimalist implmentation, so only check length
394 * and let the name server deal with things.
395 */
396 if (strlen(argv[1]) >= 255) {
397 printf("dns error: hostname too long\n");
398 return CMD_RET_FAILURE;
399 }
400
401 net_dns_resolve = argv[1];
402
403 if (argc == 3)
404 net_dns_env_var = argv[2];
405 else
406 net_dns_env_var = NULL;
407
408 if (net_loop(DNS) < 0) {
409 printf("dns lookup of %s failed, check setup\n", argv[1]);
410 return CMD_RET_FAILURE;
411 }
412
413 return CMD_RET_SUCCESS;
414 }
415
416 U_BOOT_CMD(
417 dns, 3, 1, do_dns,
418 "lookup the IP of a hostname",
419 "hostname [envvar]"
420 );
421
422 #endif /* CONFIG_CMD_DNS */
423
424 #if defined(CONFIG_CMD_LINK_LOCAL)
do_link_local(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])425 static int do_link_local(cmd_tbl_t *cmdtp, int flag, int argc,
426 char * const argv[])
427 {
428 char tmp[22];
429
430 if (net_loop(LINKLOCAL) < 0)
431 return CMD_RET_FAILURE;
432
433 net_gateway.s_addr = 0;
434 ip_to_string(net_gateway, tmp);
435 env_set("gatewayip", tmp);
436
437 ip_to_string(net_netmask, tmp);
438 env_set("netmask", tmp);
439
440 ip_to_string(net_ip, tmp);
441 env_set("ipaddr", tmp);
442 env_set("llipaddr", tmp); /* store this for next time */
443
444 return CMD_RET_SUCCESS;
445 }
446
447 U_BOOT_CMD(
448 linklocal, 1, 1, do_link_local,
449 "acquire a network IP address using the link-local protocol",
450 ""
451 );
452
453 #endif /* CONFIG_CMD_LINK_LOCAL */
454