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
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
do_tftpb(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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
do_tftpput(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])45 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
do_tftpsrv(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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
do_rarpb(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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)
do_dhcp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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)
do_nfs(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])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
netboot_update_env(void)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 setenv("gatewayip", tmp);
120 }
121
122 if (net_netmask.s_addr) {
123 ip_to_string(net_netmask, tmp);
124 setenv("netmask", tmp);
125 }
126
127 if (net_hostname[0])
128 setenv("hostname", net_hostname);
129
130 if (net_root_path[0])
131 setenv("rootpath", net_root_path);
132
133 if (net_ip.s_addr) {
134 ip_to_string(net_ip, tmp);
135 setenv("ipaddr", tmp);
136 }
137 #if !defined(CONFIG_BOOTP_SERVERIP)
138 /*
139 * Only attempt to change serverip if net/bootp.c:BootpCopyNetParams()
140 * could have set it
141 */
142 if (net_server_ip.s_addr) {
143 ip_to_string(net_server_ip, tmp);
144 setenv("serverip", tmp);
145 }
146 #endif
147 if (net_dns_server.s_addr) {
148 ip_to_string(net_dns_server, tmp);
149 setenv("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 setenv("dnsip2", tmp);
155 }
156 #endif
157 if (net_nis_domain[0])
158 setenv("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 setenv("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 setenv("ntpserverip", tmp);
170 }
171 #endif
172 }
173
netboot_common(enum proto_t proto,cmd_tbl_t * cmdtp,int argc,char * const argv[])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 = getenv("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 /* flush cache */
247 flush_cache(load_addr, size);
248
249 bootstage_mark(BOOTSTAGE_ID_NET_LOADED);
250
251 rcode = bootm_maybe_autostart(cmdtp, argv[0]);
252
253 if (rcode == CMD_RET_SUCCESS)
254 bootstage_mark(BOOTSTAGE_ID_NET_DONE);
255 else
256 bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
257 return rcode;
258 }
259
260 #if defined(CONFIG_CMD_PING)
do_ping(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])261 static int do_ping(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
262 {
263 if (argc < 2)
264 return CMD_RET_USAGE;
265
266 net_ping_ip = string_to_ip(argv[1]);
267 if (net_ping_ip.s_addr == 0)
268 return CMD_RET_USAGE;
269
270 if (net_loop(PING) < 0) {
271 printf("ping failed; host %s is not alive\n", argv[1]);
272 return CMD_RET_FAILURE;
273 }
274
275 printf("host %s is alive\n", argv[1]);
276
277 return CMD_RET_SUCCESS;
278 }
279
280 U_BOOT_CMD(
281 ping, 2, 1, do_ping,
282 "send ICMP ECHO_REQUEST to network host",
283 "pingAddress"
284 );
285 #endif
286
287 #if defined(CONFIG_CMD_CDP)
288
cdp_update_env(void)289 static void cdp_update_env(void)
290 {
291 char tmp[16];
292
293 if (cdp_appliance_vlan != htons(-1)) {
294 printf("CDP offered appliance VLAN %d\n",
295 ntohs(cdp_appliance_vlan));
296 vlan_to_string(cdp_appliance_vlan, tmp);
297 setenv("vlan", tmp);
298 net_our_vlan = cdp_appliance_vlan;
299 }
300
301 if (cdp_native_vlan != htons(-1)) {
302 printf("CDP offered native VLAN %d\n", ntohs(cdp_native_vlan));
303 vlan_to_string(cdp_native_vlan, tmp);
304 setenv("nvlan", tmp);
305 net_native_vlan = cdp_native_vlan;
306 }
307 }
308
do_cdp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])309 int do_cdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
310 {
311 int r;
312
313 r = net_loop(CDP);
314 if (r < 0) {
315 printf("cdp failed; perhaps not a CISCO switch?\n");
316 return CMD_RET_FAILURE;
317 }
318
319 cdp_update_env();
320
321 return CMD_RET_SUCCESS;
322 }
323
324 U_BOOT_CMD(
325 cdp, 1, 1, do_cdp,
326 "Perform CDP network configuration",
327 "\n"
328 );
329 #endif
330
331 #if defined(CONFIG_CMD_SNTP)
do_sntp(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])332 int do_sntp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
333 {
334 char *toff;
335
336 if (argc < 2) {
337 net_ntp_server = getenv_ip("ntpserverip");
338 if (net_ntp_server.s_addr == 0) {
339 printf("ntpserverip not set\n");
340 return CMD_RET_FAILURE;
341 }
342 } else {
343 net_ntp_server = string_to_ip(argv[1]);
344 if (net_ntp_server.s_addr == 0) {
345 printf("Bad NTP server IP address\n");
346 return CMD_RET_FAILURE;
347 }
348 }
349
350 toff = getenv("timeoffset");
351 if (toff == NULL)
352 net_ntp_time_offset = 0;
353 else
354 net_ntp_time_offset = simple_strtol(toff, NULL, 10);
355
356 if (net_loop(SNTP) < 0) {
357 printf("SNTP failed: host %pI4 not responding\n",
358 &net_ntp_server);
359 return CMD_RET_FAILURE;
360 }
361
362 return CMD_RET_SUCCESS;
363 }
364
365 U_BOOT_CMD(
366 sntp, 2, 1, do_sntp,
367 "synchronize RTC via network",
368 "[NTP server IP]\n"
369 );
370 #endif
371
372 #if defined(CONFIG_CMD_DNS)
do_dns(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])373 int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
374 {
375 if (argc == 1)
376 return CMD_RET_USAGE;
377
378 /*
379 * We should check for a valid hostname:
380 * - Each label must be between 1 and 63 characters long
381 * - the entire hostname has a maximum of 255 characters
382 * - only the ASCII letters 'a' through 'z' (case-insensitive),
383 * the digits '0' through '9', and the hyphen
384 * - cannot begin or end with a hyphen
385 * - no other symbols, punctuation characters, or blank spaces are
386 * permitted
387 * but hey - this is a minimalist implmentation, so only check length
388 * and let the name server deal with things.
389 */
390 if (strlen(argv[1]) >= 255) {
391 printf("dns error: hostname too long\n");
392 return CMD_RET_FAILURE;
393 }
394
395 net_dns_resolve = argv[1];
396
397 if (argc == 3)
398 net_dns_env_var = argv[2];
399 else
400 net_dns_env_var = NULL;
401
402 if (net_loop(DNS) < 0) {
403 printf("dns lookup of %s failed, check setup\n", argv[1]);
404 return CMD_RET_FAILURE;
405 }
406
407 return CMD_RET_SUCCESS;
408 }
409
410 U_BOOT_CMD(
411 dns, 3, 1, do_dns,
412 "lookup the IP of a hostname",
413 "hostname [envvar]"
414 );
415
416 #endif /* CONFIG_CMD_DNS */
417
418 #if defined(CONFIG_CMD_LINK_LOCAL)
do_link_local(cmd_tbl_t * cmdtp,int flag,int argc,char * const argv[])419 static int do_link_local(cmd_tbl_t *cmdtp, int flag, int argc,
420 char * const argv[])
421 {
422 char tmp[22];
423
424 if (net_loop(LINKLOCAL) < 0)
425 return CMD_RET_FAILURE;
426
427 net_gateway.s_addr = 0;
428 ip_to_string(net_gateway, tmp);
429 setenv("gatewayip", tmp);
430
431 ip_to_string(net_netmask, tmp);
432 setenv("netmask", tmp);
433
434 ip_to_string(net_ip, tmp);
435 setenv("ipaddr", tmp);
436 setenv("llipaddr", tmp); /* store this for next time */
437
438 return CMD_RET_SUCCESS;
439 }
440
441 U_BOOT_CMD(
442 linklocal, 1, 1, do_link_local,
443 "acquire a network IP address using the link-local protocol",
444 ""
445 );
446
447 #endif /* CONFIG_CMD_LINK_LOCAL */
448