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         int ret;
  47
  48         bootstage_mark_name(BOOTSTAGE_KERNELREAD_START, "tftp_start");
  49         ret = netboot_common(TFTPGET, cmdtp, argc, argv);
  50         bootstage_mark_name(BOOTSTAGE_KERNELREAD_STOP, "tftp_done");
  51         return ret;
  52 }
  53
  54 U_BOOT_CMD(
  55         tftpboot,       3,      1,      do_tftpb,
  56         "boot image via network using TFTP protocol",
  57         "[loadAddress] [[hostIPaddr:]bootfilename]"
  58 );
  59
  60 #ifdef CONFIG_CMD_TFTPPUT
  61 int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  62 {
  63         int ret;
  64
  65         ret = netboot_common(TFTPPUT, cmdtp, argc, argv);
  66         return ret;
  67 }
  68
  69 U_BOOT_CMD(
  70         tftpput,        4,      1,      do_tftpput,
  71         "TFTP put command, for uploading files to a server",
  72         "Address Size [[hostIPaddr:]filename]"
  73 );
  74 #endif
  75
  76 #ifdef CONFIG_CMD_TFTPSRV
  77 static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  78 {
  79         return netboot_common(TFTPSRV, cmdtp, argc, argv);
  80 }
  81
  82 U_BOOT_CMD(
  83         tftpsrv,        2,      1,      do_tftpsrv,
  84         "act as a TFTP server and boot the first received file",
  85         "[loadAddress]\n"
  86         "Listen for an incoming TFTP transfer, receive a file and boot it.\n"
  87         "The transfer is aborted if a transfer has not been started after\n"
  88         "about 50 seconds or if Ctrl-C is pressed."
  89 );
  90 #endif
  91
  92
  93 #ifdef CONFIG_CMD_RARP
  94 int do_rarpb (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  95 {
  96         return netboot_common (RARP, cmdtp, argc, argv);
  97 }
  98
  99 U_BOOT_CMD(
 100         rarpboot,       3,      1,      do_rarpb,
 101         "boot image via network using RARP/TFTP protocol",
 102         "[loadAddress] [[hostIPaddr:]bootfilename]"
 103 );
 104 #endif
 105
 106 #if defined(CONFIG_CMD_DHCP)
 107 int do_dhcp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 108 {
 109         return netboot_common(DHCP, cmdtp, argc, argv);
 110 }
 111
 112 U_BOOT_CMD(
 113         dhcp,   3,      1,      do_dhcp,
 114         "boot image via network using DHCP/TFTP protocol",
 115         "[loadAddress] [[hostIPaddr:]bootfilename]"
 116 );
 117 #endif
 118
 119 #if defined(CONFIG_CMD_NFS)
 120 int do_nfs (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 121 {
 122         return netboot_common(NFS, cmdtp, argc, argv);
 123 }
 124
 125 U_BOOT_CMD(
 126         nfs,    3,      1,      do_nfs,
 127         "boot image via network using NFS protocol",
 128         "[loadAddress] [[hostIPaddr:]bootfilename]"
 129 );
 130 #endif
 131
 132 static void netboot_update_env (void)
 133 {
 134         char tmp[22];
 135
 136         if (NetOurGatewayIP) {
 137                 ip_to_string (NetOurGatewayIP, tmp);
 138                 setenv ("gatewayip", tmp);
 139         }
 140
 141         if (NetOurSubnetMask) {
 142                 ip_to_string (NetOurSubnetMask, tmp);
 143                 setenv ("netmask", tmp);
 144         }
 145
 146         if (NetOurHostName[0])
 147                 setenv ("hostname", NetOurHostName);
 148
 149         if (NetOurRootPath[0])
 150                 setenv ("rootpath", NetOurRootPath);
 151
 152         if (NetOurIP) {
 153                 ip_to_string (NetOurIP, tmp);
 154                 setenv ("ipaddr", tmp);
 155         }
 156
 157         if (NetServerIP) {
 158                 ip_to_string (NetServerIP, tmp);
 159                 setenv ("serverip", tmp);
 160         }
 161
 162         if (NetOurDNSIP) {
 163                 ip_to_string (NetOurDNSIP, tmp);
 164                 setenv ("dnsip", tmp);
 165         }
 166 #if defined(CONFIG_BOOTP_DNS2)
 167         if (NetOurDNS2IP) {
 168                 ip_to_string (NetOurDNS2IP, tmp);
 169                 setenv ("dnsip2", tmp);
 170         }
 171 #endif
 172         if (NetOurNISDomain[0])
 173                 setenv ("domain", NetOurNISDomain);
 174
 175 #if defined(CONFIG_CMD_SNTP) \
 176     && defined(CONFIG_BOOTP_TIMEOFFSET)
 177         if (NetTimeOffset) {
 178                 sprintf (tmp, "%d", NetTimeOffset);
 179                 setenv ("timeoffset", tmp);
 180         }
 181 #endif
 182 #if defined(CONFIG_CMD_SNTP) \
 183     && defined(CONFIG_BOOTP_NTPSERVER)
 184         if (NetNtpServerIP) {
 185                 ip_to_string (NetNtpServerIP, tmp);
 186                 setenv ("ntpserverip", tmp);
 187         }
 188 #endif
 189 }
 190
 191 static int netboot_common(enum proto_t proto, cmd_tbl_t *cmdtp, int argc,
 192                 char * const argv[])
 193 {
 194         char *s;
 195         char *end;
 196         int   rcode = 0;
 197         int   size;
 198         ulong addr;
 199
 200         /* pre-set load_addr */
 201         if ((s = getenv("loadaddr")) != NULL) {
 202                 load_addr = simple_strtoul(s, NULL, 16);
 203         }
 204
 205         switch (argc) {
 206         case 1:
 207                 break;
 208
 209         case 2: /*
 210                  * Only one arg - accept two forms:
 211                  * Just load address, or just boot file name. The latter
 212                  * form must be written in a format which can not be
 213                  * mis-interpreted as a valid number.
 214                  */
 215                 addr = simple_strtoul(argv[1], &end, 16);
 216                 if (end == (argv[1] + strlen(argv[1])))
 217                         load_addr = addr;
 218                 else
 219                         copy_filename(BootFile, argv[1], sizeof(BootFile));
 220                 break;
 221
 222         case 3: load_addr = simple_strtoul(argv[1], NULL, 16);
 223                 copy_filename (BootFile, argv[2], sizeof(BootFile));
 224
 225                 break;
 226
 227 #ifdef CONFIG_CMD_TFTPPUT
 228         case 4:
 229                 if (strict_strtoul(argv[1], 16, &save_addr) < 0 ||
 230                         strict_strtoul(argv[2], 16, &save_size) < 0) {
 231                         printf("Invalid address/size\n");
 232                         return cmd_usage(cmdtp);
 233                 }
 234                 copy_filename(BootFile, argv[3], sizeof(BootFile));
 235                 break;
 236 #endif
 237         default:
 238                 bootstage_error(BOOTSTAGE_ID_NET_START);
 239                 return CMD_RET_USAGE;
 240         }
 241         bootstage_mark(BOOTSTAGE_ID_NET_START);
 242
 243         if ((size = NetLoop(proto)) < 0) {
 244                 bootstage_error(BOOTSTAGE_ID_NET_NETLOOP_OK);
 245                 return 1;
 246         }
 247         bootstage_mark(BOOTSTAGE_ID_NET_NETLOOP_OK);
 248
 249         /* NetLoop ok, update environment */
 250         netboot_update_env();
 251
 252         /* done if no file was loaded (no errors though) */
 253         if (size == 0) {
 254                 bootstage_error(BOOTSTAGE_ID_NET_LOADED);
 255                 return 0;
 256         }
 257
 258         /* flush cache */
 259         flush_cache(load_addr, size);
 260
 261         bootstage_mark(BOOTSTAGE_ID_NET_LOADED);
 262
 263         rcode = bootm_maybe_autostart(cmdtp, argv[0]);
 264
 265         if (rcode < 0)
 266                 bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
 267         else
 268                 bootstage_mark(BOOTSTAGE_ID_NET_DONE);
 269         return rcode;
 270 }
 271
 272 #if defined(CONFIG_CMD_PING)
 273 int do_ping (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 274 {
 275         if (argc < 2)
 276                 return -1;
 277
 278         NetPingIP = string_to_ip(argv[1]);
 279         if (NetPingIP == 0)
 280                 return CMD_RET_USAGE;
 281
 282         if (NetLoop(PING) < 0) {
 283                 printf("ping failed; host %s is not alive\n", argv[1]);
 284                 return 1;
 285         }
 286
 287         printf("host %s is alive\n", argv[1]);
 288
 289         return 0;
 290 }
 291
 292 U_BOOT_CMD(
 293         ping,   2,      1,      do_ping,
 294         "send ICMP ECHO_REQUEST to network host",
 295         "pingAddress"
 296 );
 297 #endif
 298
 299 #if defined(CONFIG_CMD_CDP)
 300
 301 static void cdp_update_env(void)
 302 {
 303         char tmp[16];
 304
 305         if (CDPApplianceVLAN != htons(-1)) {
 306                 printf("CDP offered appliance VLAN %d\n", ntohs(CDPApplianceVLAN));
 307                 VLAN_to_string(CDPApplianceVLAN, tmp);
 308                 setenv("vlan", tmp);
 309                 NetOurVLAN = CDPApplianceVLAN;
 310         }
 311
 312         if (CDPNativeVLAN != htons(-1)) {
 313                 printf("CDP offered native VLAN %d\n", ntohs(CDPNativeVLAN));
 314                 VLAN_to_string(CDPNativeVLAN, tmp);
 315                 setenv("nvlan", tmp);
 316                 NetOurNativeVLAN = CDPNativeVLAN;
 317         }
 318
 319 }
 320
 321 int do_cdp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 322 {
 323         int r;
 324
 325         r = NetLoop(CDP);
 326         if (r < 0) {
 327                 printf("cdp failed; perhaps not a CISCO switch?\n");
 328                 return 1;
 329         }
 330
 331         cdp_update_env();
 332
 333         return 0;
 334 }
 335
 336 U_BOOT_CMD(
 337         cdp,    1,      1,      do_cdp,
 338         "Perform CDP network configuration",
 339         "\n"
 340 );
 341 #endif
 342
 343 #if defined(CONFIG_CMD_SNTP)
 344 int do_sntp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 345 {
 346         char *toff;
 347
 348         if (argc < 2) {
 349                 NetNtpServerIP = getenv_IPaddr ("ntpserverip");
 350                 if (NetNtpServerIP == 0) {
 351                         printf ("ntpserverip not set\n");
 352                         return (1);
 353                 }
 354         } else {
 355                 NetNtpServerIP = string_to_ip(argv[1]);
 356                 if (NetNtpServerIP == 0) {
 357                         printf ("Bad NTP server IP address\n");
 358                         return (1);
 359                 }
 360         }
 361
 362         toff = getenv ("timeoffset");
 363         if (toff == NULL) NetTimeOffset = 0;
 364         else NetTimeOffset = simple_strtol (toff, NULL, 10);
 365
 366         if (NetLoop(SNTP) < 0) {
 367                 printf("SNTP failed: host %pI4 not responding\n",
 368                         &NetNtpServerIP);
 369                 return 1;
 370         }
 371
 372         return 0;
 373 }
 374
 375 U_BOOT_CMD(
 376         sntp,   2,      1,      do_sntp,
 377         "synchronize RTC via network",
 378         "[NTP server IP]\n"
 379 );
 380 #endif
 381
 382 #if defined(CONFIG_CMD_DNS)
 383 int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 384 {
 385         if (argc == 1)
 386                 return CMD_RET_USAGE;
 387
 388         /*
 389          * We should check for a valid hostname:
 390          * - Each label must be between 1 and 63 characters long
 391          * - the entire hostname has a maximum of 255 characters
 392          * - only the ASCII letters 'a' through 'z' (case-insensitive),
 393          *   the digits '0' through '9', and the hyphen
 394          * - cannot begin or end with a hyphen
 395          * - no other symbols, punctuation characters, or blank spaces are
 396          *   permitted
 397          * but hey - this is a minimalist implmentation, so only check length
 398          * and let the name server deal with things.
 399          */
 400         if (strlen(argv[1]) >= 255) {
 401                 printf("dns error: hostname too long\n");
 402                 return 1;
 403         }
 404
 405         NetDNSResolve = argv[1];
 406
 407         if (argc == 3)
 408                 NetDNSenvvar = argv[2];
 409         else
 410                 NetDNSenvvar = NULL;
 411
 412         if (NetLoop(DNS) < 0) {
 413                 printf("dns lookup of %s failed, check setup\n", argv[1]);
 414                 return 1;
 415         }
 416
 417         return 0;
 418 }
 419
 420 U_BOOT_CMD(
 421         dns,    3,      1,      do_dns,
 422         "lookup the IP of a hostname",
 423         "hostname [envvar]"
 424 );
 425
 426 #endif  /* CONFIG_CMD_DNS */