xref: /openbmc/u-boot/cmd/net.c (revision 193f6fb9) 
1 /*
2  * (C) Copyright 2000
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * SPDX-License-Identifier:	GPL-2.0+
6  */
7 
8 /*
9  * Boot support
10  */
11 #include <common.h>
12 #include <command.h>
13 #include <net.h>
14 
15 static int netboot_common(enum proto_t, cmd_tbl_t *, int, char * const []);
16 
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 
28 int do_tftpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
29 {
30 	int ret;
31 
32 	bootstage_mark_name(BOOTSTAGE_KERNELREAD_START, "tftp_start");
33 	ret = netboot_common(TFTPGET, cmdtp, argc, argv);
34 	bootstage_mark_name(BOOTSTAGE_KERNELREAD_STOP, "tftp_done");
35 	return ret;
36 }
37 
38 U_BOOT_CMD(
39 	tftpboot,	3,	1,	do_tftpb,
40 	"boot image via network using TFTP protocol",
41 	"[loadAddress] [[hostIPaddr:]bootfilename]"
42 );
43 
44 #ifdef CONFIG_CMD_TFTPPUT
45 static int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
46 {
47 	return netboot_common(TFTPPUT, cmdtp, argc, argv);
48 }
49 
50 U_BOOT_CMD(
51 	tftpput,	4,	1,	do_tftpput,
52 	"TFTP put command, for uploading files to a server",
53 	"Address Size [[hostIPaddr:]filename]"
54 );
55 #endif
56 
57 #ifdef CONFIG_CMD_TFTPSRV
58 static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
59 {
60 	return netboot_common(TFTPSRV, cmdtp, argc, argv);
61 }
62 
63 U_BOOT_CMD(
64 	tftpsrv,	2,	1,	do_tftpsrv,
65 	"act as a TFTP server and boot the first received file",
66 	"[loadAddress]\n"
67 	"Listen for an incoming TFTP transfer, receive a file and boot it.\n"
68 	"The transfer is aborted if a transfer has not been started after\n"
69 	"about 50 seconds or if Ctrl-C is pressed."
70 );
71 #endif
72 
73 
74 #ifdef CONFIG_CMD_RARP
75 int do_rarpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
76 {
77 	return netboot_common(RARP, cmdtp, argc, argv);
78 }
79 
80 U_BOOT_CMD(
81 	rarpboot,	3,	1,	do_rarpb,
82 	"boot image via network using RARP/TFTP protocol",
83 	"[loadAddress] [[hostIPaddr:]bootfilename]"
84 );
85 #endif
86 
87 #if defined(CONFIG_CMD_DHCP)
88 static int do_dhcp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
89 {
90 	return netboot_common(DHCP, cmdtp, argc, argv);
91 }
92 
93 U_BOOT_CMD(
94 	dhcp,	3,	1,	do_dhcp,
95 	"boot image via network using DHCP/TFTP protocol",
96 	"[loadAddress] [[hostIPaddr:]bootfilename]"
97 );
98 #endif
99 
100 #if defined(CONFIG_CMD_NFS)
101 static int do_nfs(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
102 {
103 	return netboot_common(NFS, cmdtp, argc, argv);
104 }
105 
106 U_BOOT_CMD(
107 	nfs,	3,	1,	do_nfs,
108 	"boot image via network using NFS protocol",
109 	"[loadAddress] [[hostIPaddr:]bootfilename]"
110 );
111 #endif
112 
113 static void netboot_update_env(void)
114 {
115 	char tmp[22];
116 
117 	if (net_gateway.s_addr) {
118 		ip_to_string(net_gateway, tmp);
119 		env_set("gatewayip", tmp);
120 	}
121 
122 	if (net_netmask.s_addr) {
123 		ip_to_string(net_netmask, tmp);
124 		env_set("netmask", tmp);
125 	}
126 
127 	if (net_hostname[0])
128 		env_set("hostname", net_hostname);
129 
130 	if (net_root_path[0])
131 		env_set("rootpath", net_root_path);
132 
133 	if (net_ip.s_addr) {
134 		ip_to_string(net_ip, tmp);
135 		env_set("ipaddr", tmp);
136 	}
137 #if !defined(CONFIG_BOOTP_SERVERIP)
138 	/*
139 	 * Only attempt to change serverip if net/bootp.c:store_net_params()
140 	 * could have set it
141 	 */
142 	if (net_server_ip.s_addr) {
143 		ip_to_string(net_server_ip, tmp);
144 		env_set("serverip", tmp);
145 	}
146 #endif
147 	if (net_dns_server.s_addr) {
148 		ip_to_string(net_dns_server, tmp);
149 		env_set("dnsip", tmp);
150 	}
151 #if defined(CONFIG_BOOTP_DNS2)
152 	if (net_dns_server2.s_addr) {
153 		ip_to_string(net_dns_server2, tmp);
154 		env_set("dnsip2", tmp);
155 	}
156 #endif
157 	if (net_nis_domain[0])
158 		env_set("domain", net_nis_domain);
159 
160 #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_TIMEOFFSET)
161 	if (net_ntp_time_offset) {
162 		sprintf(tmp, "%d", net_ntp_time_offset);
163 		env_set("timeoffset", tmp);
164 	}
165 #endif
166 #if defined(CONFIG_CMD_SNTP) && defined(CONFIG_BOOTP_NTPSERVER)
167 	if (net_ntp_server.s_addr) {
168 		ip_to_string(net_ntp_server, tmp);
169 		env_set("ntpserverip", tmp);
170 	}
171 #endif
172 }
173 
174 static int netboot_common(enum proto_t proto, cmd_tbl_t *cmdtp, int argc,
175 		char * const argv[])
176 {
177 	char *s;
178 	char *end;
179 	int   rcode = 0;
180 	int   size;
181 	ulong addr;
182 
183 	/* pre-set load_addr */
184 	s = env_get("loadaddr");
185 	if (s != NULL)
186 		load_addr = simple_strtoul(s, NULL, 16);
187 
188 	switch (argc) {
189 	case 1:
190 		break;
191 
192 	case 2:	/*
193 		 * Only one arg - accept two forms:
194 		 * Just load address, or just boot file name. The latter
195 		 * form must be written in a format which can not be
196 		 * mis-interpreted as a valid number.
197 		 */
198 		addr = simple_strtoul(argv[1], &end, 16);
199 		if (end == (argv[1] + strlen(argv[1])))
200 			load_addr = addr;
201 		else
202 			copy_filename(net_boot_file_name, argv[1],
203 				      sizeof(net_boot_file_name));
204 		break;
205 
206 	case 3:
207 		load_addr = simple_strtoul(argv[1], NULL, 16);
208 		copy_filename(net_boot_file_name, argv[2],
209 			      sizeof(net_boot_file_name));
210 
211 		break;
212 
213 #ifdef CONFIG_CMD_TFTPPUT
214 	case 4:
215 		if (strict_strtoul(argv[1], 16, &save_addr) < 0 ||
216 		    strict_strtoul(argv[2], 16, &save_size) < 0) {
217 			printf("Invalid address/size\n");
218 			return CMD_RET_USAGE;
219 		}
220 		copy_filename(net_boot_file_name, argv[3],
221 			      sizeof(net_boot_file_name));
222 		break;
223 #endif
224 	default:
225 		bootstage_error(BOOTSTAGE_ID_NET_START);
226 		return CMD_RET_USAGE;
227 	}
228 	bootstage_mark(BOOTSTAGE_ID_NET_START);
229 
230 	size = net_loop(proto);
231 	if (size < 0) {
232 		bootstage_error(BOOTSTAGE_ID_NET_NETLOOP_OK);
233 		return CMD_RET_FAILURE;
234 	}
235 	bootstage_mark(BOOTSTAGE_ID_NET_NETLOOP_OK);
236 
237 	/* net_loop ok, update environment */
238 	netboot_update_env();
239 
240 	/* done if no file was loaded (no errors though) */
241 	if (size == 0) {
242 		bootstage_error(BOOTSTAGE_ID_NET_LOADED);
243 		return CMD_RET_SUCCESS;
244 	}
245 
246 	bootstage_mark(BOOTSTAGE_ID_NET_LOADED);
247 
248 	rcode = bootm_maybe_autostart(cmdtp, argv[0]);
249 
250 	if (rcode == CMD_RET_SUCCESS)
251 		bootstage_mark(BOOTSTAGE_ID_NET_DONE);
252 	else
253 		bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
254 	return rcode;
255 }
256 
257 #if defined(CONFIG_CMD_PING)
258 static int do_ping(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
259 {
260 	if (argc < 2)
261 		return CMD_RET_USAGE;
262 
263 	net_ping_ip = string_to_ip(argv[1]);
264 	if (net_ping_ip.s_addr == 0)
265 		return CMD_RET_USAGE;
266 
267 	if (net_loop(PING) < 0) {
268 		printf("ping failed; host %s is not alive\n", argv[1]);
269 		return CMD_RET_FAILURE;
270 	}
271 
272 	printf("host %s is alive\n", argv[1]);
273 
274 	return CMD_RET_SUCCESS;
275 }
276 
277 U_BOOT_CMD(
278 	ping,	2,	1,	do_ping,
279 	"send ICMP ECHO_REQUEST to network host",
280 	"pingAddress"
281 );
282 #endif
283 
284 #if defined(CONFIG_CMD_CDP)
285 
286 static void cdp_update_env(void)
287 {
288 	char tmp[16];
289 
290 	if (cdp_appliance_vlan != htons(-1)) {
291 		printf("CDP offered appliance VLAN %d\n",
292 		       ntohs(cdp_appliance_vlan));
293 		vlan_to_string(cdp_appliance_vlan, tmp);
294 		env_set("vlan", tmp);
295 		net_our_vlan = cdp_appliance_vlan;
296 	}
297 
298 	if (cdp_native_vlan != htons(-1)) {
299 		printf("CDP offered native VLAN %d\n", ntohs(cdp_native_vlan));
300 		vlan_to_string(cdp_native_vlan, tmp);
301 		env_set("nvlan", tmp);
302 		net_native_vlan = cdp_native_vlan;
303 	}
304 }
305 
306 int do_cdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
307 {
308 	int r;
309 
310 	r = net_loop(CDP);
311 	if (r < 0) {
312 		printf("cdp failed; perhaps not a CISCO switch?\n");
313 		return CMD_RET_FAILURE;
314 	}
315 
316 	cdp_update_env();
317 
318 	return CMD_RET_SUCCESS;
319 }
320 
321 U_BOOT_CMD(
322 	cdp,	1,	1,	do_cdp,
323 	"Perform CDP network configuration",
324 	"\n"
325 );
326 #endif
327 
328 #if defined(CONFIG_CMD_SNTP)
329 int do_sntp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
330 {
331 	char *toff;
332 
333 	if (argc < 2) {
334 		net_ntp_server = env_get_ip("ntpserverip");
335 		if (net_ntp_server.s_addr == 0) {
336 			printf("ntpserverip not set\n");
337 			return CMD_RET_FAILURE;
338 		}
339 	} else {
340 		net_ntp_server = string_to_ip(argv[1]);
341 		if (net_ntp_server.s_addr == 0) {
342 			printf("Bad NTP server IP address\n");
343 			return CMD_RET_FAILURE;
344 		}
345 	}
346 
347 	toff = env_get("timeoffset");
348 	if (toff == NULL)
349 		net_ntp_time_offset = 0;
350 	else
351 		net_ntp_time_offset = simple_strtol(toff, NULL, 10);
352 
353 	if (net_loop(SNTP) < 0) {
354 		printf("SNTP failed: host %pI4 not responding\n",
355 		       &net_ntp_server);
356 		return CMD_RET_FAILURE;
357 	}
358 
359 	return CMD_RET_SUCCESS;
360 }
361 
362 U_BOOT_CMD(
363 	sntp,	2,	1,	do_sntp,
364 	"synchronize RTC via network",
365 	"[NTP server IP]\n"
366 );
367 #endif
368 
369 #if defined(CONFIG_CMD_DNS)
370 int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
371 {
372 	if (argc == 1)
373 		return CMD_RET_USAGE;
374 
375 	/*
376 	 * We should check for a valid hostname:
377 	 * - Each label must be between 1 and 63 characters long
378 	 * - the entire hostname has a maximum of 255 characters
379 	 * - only the ASCII letters 'a' through 'z' (case-insensitive),
380 	 *   the digits '0' through '9', and the hyphen
381 	 * - cannot begin or end with a hyphen
382 	 * - no other symbols, punctuation characters, or blank spaces are
383 	 *   permitted
384 	 * but hey - this is a minimalist implmentation, so only check length
385 	 * and let the name server deal with things.
386 	 */
387 	if (strlen(argv[1]) >= 255) {
388 		printf("dns error: hostname too long\n");
389 		return CMD_RET_FAILURE;
390 	}
391 
392 	net_dns_resolve = argv[1];
393 
394 	if (argc == 3)
395 		net_dns_env_var = argv[2];
396 	else
397 		net_dns_env_var = NULL;
398 
399 	if (net_loop(DNS) < 0) {
400 		printf("dns lookup of %s failed, check setup\n", argv[1]);
401 		return CMD_RET_FAILURE;
402 	}
403 
404 	return CMD_RET_SUCCESS;
405 }
406 
407 U_BOOT_CMD(
408 	dns,	3,	1,	do_dns,
409 	"lookup the IP of a hostname",
410 	"hostname [envvar]"
411 );
412 
413 #endif	/* CONFIG_CMD_DNS */
414 
415 #if defined(CONFIG_CMD_LINK_LOCAL)
416 static int do_link_local(cmd_tbl_t *cmdtp, int flag, int argc,
417 			char * const argv[])
418 {
419 	char tmp[22];
420 
421 	if (net_loop(LINKLOCAL) < 0)
422 		return CMD_RET_FAILURE;
423 
424 	net_gateway.s_addr = 0;
425 	ip_to_string(net_gateway, tmp);
426 	env_set("gatewayip", tmp);
427 
428 	ip_to_string(net_netmask, tmp);
429 	env_set("netmask", tmp);
430 
431 	ip_to_string(net_ip, tmp);
432 	env_set("ipaddr", tmp);
433 	env_set("llipaddr", tmp); /* store this for next time */
434 
435 	return CMD_RET_SUCCESS;
436 }
437 
438 U_BOOT_CMD(
439 	linklocal,	1,	1,	do_link_local,
440 	"acquire a network IP address using the link-local protocol",
441 	""
442 );
443 
444 #endif  /* CONFIG_CMD_LINK_LOCAL */
445