cmd/net.c

   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 */