common/cmd_net.c

   1 /*
   2  * (C) Copyright 2000
   3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   4  *
   5  * See file CREDITS for list of people who contributed to this
   6  * project.
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License as
  10  * published by the Free Software Foundation; either version 2 of
  11  * the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  21  * MA 02111-1307 USA
  22  */
  23
  24 /*
  25  * Boot support
  26  */
  27 #include <common.h>
  28 #include <command.h>
  29 #include <net.h>
  30
  31 static int netboot_common(enum proto_t, cmd_tbl_t *, int, char * const []);
  32
  33 int do_bootp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  34 {
  35         return netboot_common (BOOTP, cmdtp, argc, argv);
  36 }
  37
  38 U_BOOT_CMD(
  39         bootp,  3,      1,      do_bootp,
  40         "boot image via network using BOOTP/TFTP protocol",
  41         "[loadAddress] [[hostIPaddr:]bootfilename]"
  42 );
  43
  44 int do_tftpb (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  45 {
  46         return netboot_common(TFTPGET, cmdtp, argc, argv);
  47 }
  48
  49 U_BOOT_CMD(
  50         tftpboot,       3,      1,      do_tftpb,
  51         "boot image via network using TFTP protocol",
  52         "[loadAddress] [[hostIPaddr:]bootfilename]"
  53 );
  54
  55 #ifdef CONFIG_CMD_TFTPPUT
  56 int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  57 {
  58         int ret;
  59
  60         ret = netboot_common(TFTPPUT, cmdtp, argc, argv);
  61         return ret;
  62 }
  63
  64 U_BOOT_CMD(
  65         tftpput,        4,      1,      do_tftpput,
  66         "TFTP put command, for uploading files to a server",
  67         "Address Size [[hostIPaddr:]filename]"
  68 );
  69 #endif
  70
  71 #ifdef CONFIG_CMD_TFTPSRV
  72 static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  73 {
  74         return netboot_common(TFTPSRV, cmdtp, argc, argv);
  75 }
  76
  77 U_BOOT_CMD(
  78         tftpsrv,        2,      1,      do_tftpsrv,
  79         "act as a TFTP server and boot the first received file",
  80         "[loadAddress]\n"
  81         "Listen for an incoming TFTP transfer, receive a file and boot it.\n"
  82         "The transfer is aborted if a transfer has not been started after\n"
  83         "about 50 seconds or if Ctrl-C is pressed."
  84 );
  85 #endif
  86
  87
  88 #ifdef CONFIG_CMD_RARP
  89 int do_rarpb (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  90 {
  91         return netboot_common (RARP, cmdtp, argc, argv);
  92 }
  93
  94 U_BOOT_CMD(
  95         rarpboot,       3,      1,      do_rarpb,
  96         "boot image via network using RARP/TFTP protocol",
  97         "[loadAddress] [[hostIPaddr:]bootfilename]"
  98 );
  99 #endif
 100
 101 #if defined(CONFIG_CMD_DHCP)
 102 int do_dhcp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 103 {
 104         return netboot_common(DHCP, cmdtp, argc, argv);
 105 }
 106
 107 U_BOOT_CMD(
 108         dhcp,   3,      1,      do_dhcp,
 109         "boot image via network using DHCP/TFTP protocol",
 110         "[loadAddress] [[hostIPaddr:]bootfilename]"
 111 );
 112 #endif
 113
 114 #if defined(CONFIG_CMD_NFS)
 115 int do_nfs (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 116 {
 117         return netboot_common(NFS, cmdtp, argc, argv);
 118 }
 119
 120 U_BOOT_CMD(
 121         nfs,    3,      1,      do_nfs,
 122         "boot image via network using NFS protocol",
 123         "[loadAddress] [[hostIPaddr:]bootfilename]"
 124 );
 125 #endif
 126
 127 static void netboot_update_env (void)
 128 {
 129         char tmp[22];
 130
 131         if (NetOurGatewayIP) {
 132                 ip_to_string (NetOurGatewayIP, tmp);
 133                 setenv ("gatewayip", tmp);
 134         }
 135
 136         if (NetOurSubnetMask) {
 137                 ip_to_string (NetOurSubnetMask, tmp);
 138                 setenv ("netmask", tmp);
 139         }
 140
 141         if (NetOurHostName[0])
 142                 setenv ("hostname", NetOurHostName);
 143
 144         if (NetOurRootPath[0])
 145                 setenv ("rootpath", NetOurRootPath);
 146
 147         if (NetOurIP) {
 148                 ip_to_string (NetOurIP, tmp);
 149                 setenv ("ipaddr", tmp);
 150         }
 151
 152         if (NetServerIP) {
 153                 ip_to_string (NetServerIP, tmp);
 154                 setenv ("serverip", tmp);
 155         }
 156
 157         if (NetOurDNSIP) {
 158                 ip_to_string (NetOurDNSIP, tmp);
 159                 setenv ("dnsip", tmp);
 160         }
 161 #if defined(CONFIG_BOOTP_DNS2)
 162         if (NetOurDNS2IP) {
 163                 ip_to_string (NetOurDNS2IP, tmp);
 164                 setenv ("dnsip2", tmp);
 165         }
 166 #endif
 167         if (NetOurNISDomain[0])
 168                 setenv ("domain", NetOurNISDomain);
 169
 170 #if defined(CONFIG_CMD_SNTP) \
 171     && defined(CONFIG_BOOTP_TIMEOFFSET)
 172         if (NetTimeOffset) {
 173                 sprintf (tmp, "%d", NetTimeOffset);
 174                 setenv ("timeoffset", tmp);
 175         }
 176 #endif
 177 #if defined(CONFIG_CMD_SNTP) \
 178     && defined(CONFIG_BOOTP_NTPSERVER)
 179         if (NetNtpServerIP) {
 180                 ip_to_string (NetNtpServerIP, tmp);
 181                 setenv ("ntpserverip", tmp);
 182         }
 183 #endif
 184 }
 185
 186 static int netboot_common(enum proto_t proto, cmd_tbl_t *cmdtp, int argc,
 187                 char * const argv[])
 188 {
 189         char *s;
 190         char *end;
 191         int   rcode = 0;
 192         int   size;
 193         ulong addr;
 194
 195         /* pre-set load_addr */
 196         if ((s = getenv("loadaddr")) != NULL) {
 197                 load_addr = simple_strtoul(s, NULL, 16);
 198         }
 199
 200         switch (argc) {
 201         case 1:
 202                 break;
 203
 204         case 2: /*
 205                  * Only one arg - accept two forms:
 206                  * Just load address, or just boot file name. The latter
 207                  * form must be written in a format which can not be
 208                  * mis-interpreted as a valid number.
 209                  */
 210                 addr = simple_strtoul(argv[1], &end, 16);
 211                 if (end == (argv[1] + strlen(argv[1])))
 212                         load_addr = addr;
 213                 else
 214                         copy_filename(BootFile, argv[1], sizeof(BootFile));
 215                 break;
 216
 217         case 3: load_addr = simple_strtoul(argv[1], NULL, 16);
 218                 copy_filename (BootFile, argv[2], sizeof(BootFile));
 219
 220                 break;
 221
 222 #ifdef CONFIG_CMD_TFTPPUT
 223         case 4:
 224                 if (strict_strtoul(argv[1], 16, &save_addr) < 0 ||
 225                         strict_strtoul(argv[2], 16, &save_size) < 0) {
 226                         printf("Invalid address/size\n");
 227                         return cmd_usage(cmdtp);
 228                 }
 229                 copy_filename(BootFile, argv[3], sizeof(BootFile));
 230                 break;
 231 #endif
 232         default:
 233                 bootstage_error(BOOTSTAGE_ID_NET_START);
 234                 return CMD_RET_USAGE;
 235         }
 236         bootstage_mark(BOOTSTAGE_ID_NET_START);
 237
 238         if ((size = NetLoop(proto)) < 0) {
 239                 bootstage_error(BOOTSTAGE_ID_NET_NETLOOP_OK);
 240                 return 1;
 241         }
 242         bootstage_mark(BOOTSTAGE_ID_NET_NETLOOP_OK);
 243
 244         /* NetLoop ok, update environment */
 245         netboot_update_env();
 246
 247         /* done if no file was loaded (no errors though) */
 248         if (size == 0) {
 249                 bootstage_error(BOOTSTAGE_ID_NET_LOADED);
 250                 return 0;
 251         }
 252
 253         /* flush cache */
 254         flush_cache(load_addr, size);
 255
 256         bootstage_mark(BOOTSTAGE_ID_NET_LOADED);
 257
 258         rcode = bootm_maybe_autostart(cmdtp, argv[0]);
 259
 260         if (rcode < 0)
 261                 bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
 262         else
 263                 bootstage_mark(BOOTSTAGE_ID_NET_DONE);
 264         return rcode;
 265 }
 266
 267 #if defined(CONFIG_CMD_PING)
 268 int do_ping (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 269 {
 270         if (argc < 2)
 271                 return -1;
 272
 273         NetPingIP = string_to_ip(argv[1]);
 274         if (NetPingIP == 0)
 275                 return CMD_RET_USAGE;
 276
 277         if (NetLoop(PING) < 0) {
 278                 printf("ping failed; host %s is not alive\n", argv[1]);
 279                 return 1;
 280         }
 281
 282         printf("host %s is alive\n", argv[1]);
 283
 284         return 0;
 285 }
 286
 287 U_BOOT_CMD(
 288         ping,   2,      1,      do_ping,
 289         "send ICMP ECHO_REQUEST to network host",
 290         "pingAddress"
 291 );
 292 #endif
 293
 294 #if defined(CONFIG_CMD_CDP)
 295
 296 static void cdp_update_env(void)
 297 {
 298         char tmp[16];
 299
 300         if (CDPApplianceVLAN != htons(-1)) {
 301                 printf("CDP offered appliance VLAN %d\n", ntohs(CDPApplianceVLAN));
 302                 VLAN_to_string(CDPApplianceVLAN, tmp);
 303                 setenv("vlan", tmp);
 304                 NetOurVLAN = CDPApplianceVLAN;
 305         }
 306
 307         if (CDPNativeVLAN != htons(-1)) {
 308                 printf("CDP offered native VLAN %d\n", ntohs(CDPNativeVLAN));
 309                 VLAN_to_string(CDPNativeVLAN, tmp);
 310                 setenv("nvlan", tmp);
 311                 NetOurNativeVLAN = CDPNativeVLAN;
 312         }
 313
 314 }
 315
 316 int do_cdp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 317 {
 318         int r;
 319
 320         r = NetLoop(CDP);
 321         if (r < 0) {
 322                 printf("cdp failed; perhaps not a CISCO switch?\n");
 323                 return 1;
 324         }
 325
 326         cdp_update_env();
 327
 328         return 0;
 329 }
 330
 331 U_BOOT_CMD(
 332         cdp,    1,      1,      do_cdp,
 333         "Perform CDP network configuration",
 334         "\n"
 335 );
 336 #endif
 337
 338 #if defined(CONFIG_CMD_SNTP)
 339 int do_sntp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 340 {
 341         char *toff;
 342
 343         if (argc < 2) {
 344                 NetNtpServerIP = getenv_IPaddr ("ntpserverip");
 345                 if (NetNtpServerIP == 0) {
 346                         printf ("ntpserverip not set\n");
 347                         return (1);
 348                 }
 349         } else {
 350                 NetNtpServerIP = string_to_ip(argv[1]);
 351                 if (NetNtpServerIP == 0) {
 352                         printf ("Bad NTP server IP address\n");
 353                         return (1);
 354                 }
 355         }
 356
 357         toff = getenv ("timeoffset");
 358         if (toff == NULL) NetTimeOffset = 0;
 359         else NetTimeOffset = simple_strtol (toff, NULL, 10);
 360
 361         if (NetLoop(SNTP) < 0) {
 362                 printf("SNTP failed: host %pI4 not responding\n",
 363                         &NetNtpServerIP);
 364                 return 1;
 365         }
 366
 367         return 0;
 368 }
 369
 370 U_BOOT_CMD(
 371         sntp,   2,      1,      do_sntp,
 372         "synchronize RTC via network",
 373         "[NTP server IP]\n"
 374 );
 375 #endif
 376
 377 #if defined(CONFIG_CMD_DNS)
 378 int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 379 {
 380         if (argc == 1)
 381                 return CMD_RET_USAGE;
 382
 383         /*
 384          * We should check for a valid hostname:
 385          * - Each label must be between 1 and 63 characters long
 386          * - the entire hostname has a maximum of 255 characters
 387          * - only the ASCII letters 'a' through 'z' (case-insensitive),
 388          *   the digits '0' through '9', and the hyphen
 389          * - cannot begin or end with a hyphen
 390          * - no other symbols, punctuation characters, or blank spaces are
 391          *   permitted
 392          * but hey - this is a minimalist implmentation, so only check length
 393          * and let the name server deal with things.
 394          */
 395         if (strlen(argv[1]) >= 255) {
 396                 printf("dns error: hostname too long\n");
 397                 return 1;
 398         }
 399
 400         NetDNSResolve = argv[1];
 401
 402         if (argc == 3)
 403                 NetDNSenvvar = argv[2];
 404         else
 405                 NetDNSenvvar = NULL;
 406
 407         if (NetLoop(DNS) < 0) {
 408                 printf("dns lookup of %s failed, check setup\n", argv[1]);
 409                 return 1;
 410         }
 411
 412         return 0;
 413 }
 414
 415 U_BOOT_CMD(
 416         dns,    3,      1,      do_dns,
 417         "lookup the IP of a hostname",
 418         "hostname [envvar]"
 419 );
 420
 421 #endif  /* CONFIG_CMD_DNS */