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 (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 (TFTP, 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_RARP
  56 int do_rarpb (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  57 {
  58         return netboot_common (RARP, cmdtp, argc, argv);
  59 }
  60
  61 U_BOOT_CMD(
  62         rarpboot,       3,      1,      do_rarpb,
  63         "boot image via network using RARP/TFTP protocol",
  64         "[loadAddress] [[hostIPaddr:]bootfilename]"
  65 );
  66 #endif
  67
  68 #if defined(CONFIG_CMD_DHCP)
  69 int do_dhcp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  70 {
  71         return netboot_common(DHCP, cmdtp, argc, argv);
  72 }
  73
  74 U_BOOT_CMD(
  75         dhcp,   3,      1,      do_dhcp,
  76         "boot image via network using DHCP/TFTP protocol",
  77         "[loadAddress] [[hostIPaddr:]bootfilename]"
  78 );
  79 #endif
  80
  81 #if defined(CONFIG_CMD_NFS)
  82 int do_nfs (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  83 {
  84         return netboot_common(NFS, cmdtp, argc, argv);
  85 }
  86
  87 U_BOOT_CMD(
  88         nfs,    3,      1,      do_nfs,
  89         "boot image via network using NFS protocol",
  90         "[loadAddress] [[hostIPaddr:]bootfilename]"
  91 );
  92 #endif
  93
  94 static void netboot_update_env (void)
  95 {
  96         char tmp[22];
  97
  98         if (NetOurGatewayIP) {
  99                 ip_to_string (NetOurGatewayIP, tmp);
 100                 setenv ("gatewayip", tmp);
 101         }
 102
 103         if (NetOurSubnetMask) {
 104                 ip_to_string (NetOurSubnetMask, tmp);
 105                 setenv ("netmask", tmp);
 106         }
 107
 108         if (NetOurHostName[0])
 109                 setenv ("hostname", NetOurHostName);
 110
 111         if (NetOurRootPath[0])
 112                 setenv ("rootpath", NetOurRootPath);
 113
 114         if (NetOurIP) {
 115                 ip_to_string (NetOurIP, tmp);
 116                 setenv ("ipaddr", tmp);
 117         }
 118
 119         if (NetServerIP) {
 120                 ip_to_string (NetServerIP, tmp);
 121                 setenv ("serverip", tmp);
 122         }
 123
 124         if (NetOurDNSIP) {
 125                 ip_to_string (NetOurDNSIP, tmp);
 126                 setenv ("dnsip", tmp);
 127         }
 128 #if defined(CONFIG_BOOTP_DNS2)
 129         if (NetOurDNS2IP) {
 130                 ip_to_string (NetOurDNS2IP, tmp);
 131                 setenv ("dnsip2", tmp);
 132         }
 133 #endif
 134         if (NetOurNISDomain[0])
 135                 setenv ("domain", NetOurNISDomain);
 136
 137 #if defined(CONFIG_CMD_SNTP) \
 138     && defined(CONFIG_BOOTP_TIMEOFFSET)
 139         if (NetTimeOffset) {
 140                 sprintf (tmp, "%d", NetTimeOffset);
 141                 setenv ("timeoffset", tmp);
 142         }
 143 #endif
 144 #if defined(CONFIG_CMD_SNTP) \
 145     && defined(CONFIG_BOOTP_NTPSERVER)
 146         if (NetNtpServerIP) {
 147                 ip_to_string (NetNtpServerIP, tmp);
 148                 setenv ("ntpserverip", tmp);
 149         }
 150 #endif
 151 }
 152
 153 static int
 154 netboot_common (proto_t proto, cmd_tbl_t *cmdtp, int argc, char * const argv[])
 155 {
 156         char *s;
 157         char *end;
 158         int   rcode = 0;
 159         int   size;
 160         ulong addr;
 161
 162         /* pre-set load_addr */
 163         if ((s = getenv("loadaddr")) != NULL) {
 164                 load_addr = simple_strtoul(s, NULL, 16);
 165         }
 166
 167         switch (argc) {
 168         case 1:
 169                 break;
 170
 171         case 2: /*
 172                  * Only one arg - accept two forms:
 173                  * Just load address, or just boot file name. The latter
 174                  * form must be written in a format which can not be
 175                  * mis-interpreted as a valid number.
 176                  */
 177                 addr = simple_strtoul(argv[1], &end, 16);
 178                 if (end == (argv[1] + strlen(argv[1])))
 179                         load_addr = addr;
 180                 else
 181                         copy_filename(BootFile, argv[1], sizeof(BootFile));
 182                 break;
 183
 184         case 3: load_addr = simple_strtoul(argv[1], NULL, 16);
 185                 copy_filename (BootFile, argv[2], sizeof(BootFile));
 186
 187                 break;
 188
 189         default:
 190                 show_boot_progress (-80);
 191                 return cmd_usage(cmdtp);
 192         }
 193
 194         show_boot_progress (80);
 195         if ((size = NetLoop(proto)) < 0) {
 196                 show_boot_progress (-81);
 197                 return 1;
 198         }
 199
 200         show_boot_progress (81);
 201         /* NetLoop ok, update environment */
 202         netboot_update_env();
 203
 204         /* done if no file was loaded (no errors though) */
 205         if (size == 0) {
 206                 show_boot_progress (-82);
 207                 return 0;
 208         }
 209
 210         /* flush cache */
 211         flush_cache(load_addr, size);
 212
 213         /* Loading ok, check if we should attempt an auto-start */
 214         if (((s = getenv("autostart")) != NULL) && (strcmp(s,"yes") == 0)) {
 215                 char *local_args[2];
 216                 local_args[0] = argv[0];
 217                 local_args[1] = NULL;
 218
 219                 printf ("Automatic boot of image at addr 0x%08lX ...\n",
 220                         load_addr);
 221                 show_boot_progress (82);
 222                 rcode = do_bootm (cmdtp, 0, 1, local_args);
 223         }
 224
 225         if (rcode < 0)
 226                 show_boot_progress (-83);
 227         else
 228                 show_boot_progress (84);
 229         return rcode;
 230 }
 231
 232 #if defined(CONFIG_CMD_PING)
 233 int do_ping (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 234 {
 235         if (argc < 2)
 236                 return -1;
 237
 238         NetPingIP = string_to_ip(argv[1]);
 239         if (NetPingIP == 0)
 240                 return cmd_usage(cmdtp);
 241
 242         if (NetLoop(PING) < 0) {
 243                 printf("ping failed; host %s is not alive\n", argv[1]);
 244                 return 1;
 245         }
 246
 247         printf("host %s is alive\n", argv[1]);
 248
 249         return 0;
 250 }
 251
 252 U_BOOT_CMD(
 253         ping,   2,      1,      do_ping,
 254         "send ICMP ECHO_REQUEST to network host",
 255         "pingAddress"
 256 );
 257 #endif
 258
 259 #if defined(CONFIG_CMD_CDP)
 260
 261 static void cdp_update_env(void)
 262 {
 263         char tmp[16];
 264
 265         if (CDPApplianceVLAN != htons(-1)) {
 266                 printf("CDP offered appliance VLAN %d\n", ntohs(CDPApplianceVLAN));
 267                 VLAN_to_string(CDPApplianceVLAN, tmp);
 268                 setenv("vlan", tmp);
 269                 NetOurVLAN = CDPApplianceVLAN;
 270         }
 271
 272         if (CDPNativeVLAN != htons(-1)) {
 273                 printf("CDP offered native VLAN %d\n", ntohs(CDPNativeVLAN));
 274                 VLAN_to_string(CDPNativeVLAN, tmp);
 275                 setenv("nvlan", tmp);
 276                 NetOurNativeVLAN = CDPNativeVLAN;
 277         }
 278
 279 }
 280
 281 int do_cdp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 282 {
 283         int r;
 284
 285         r = NetLoop(CDP);
 286         if (r < 0) {
 287                 printf("cdp failed; perhaps not a CISCO switch?\n");
 288                 return 1;
 289         }
 290
 291         cdp_update_env();
 292
 293         return 0;
 294 }
 295
 296 U_BOOT_CMD(
 297         cdp,    1,      1,      do_cdp,
 298         "Perform CDP network configuration",
 299         "\n"
 300 );
 301 #endif
 302
 303 #if defined(CONFIG_CMD_SNTP)
 304 int do_sntp (cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 305 {
 306         char *toff;
 307
 308         if (argc < 2) {
 309                 NetNtpServerIP = getenv_IPaddr ("ntpserverip");
 310                 if (NetNtpServerIP == 0) {
 311                         printf ("ntpserverip not set\n");
 312                         return (1);
 313                 }
 314         } else {
 315                 NetNtpServerIP = string_to_ip(argv[1]);
 316                 if (NetNtpServerIP == 0) {
 317                         printf ("Bad NTP server IP address\n");
 318                         return (1);
 319                 }
 320         }
 321
 322         toff = getenv ("timeoffset");
 323         if (toff == NULL) NetTimeOffset = 0;
 324         else NetTimeOffset = simple_strtol (toff, NULL, 10);
 325
 326         if (NetLoop(SNTP) < 0) {
 327                 printf("SNTP failed: host %s not responding\n", argv[1]);
 328                 return 1;
 329         }
 330
 331         return 0;
 332 }
 333
 334 U_BOOT_CMD(
 335         sntp,   2,      1,      do_sntp,
 336         "synchronize RTC via network",
 337         "[NTP server IP]\n"
 338 );
 339 #endif
 340
 341 #if defined(CONFIG_CMD_DNS)
 342 int do_dns(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 343 {
 344         if (argc == 1)
 345                 return cmd_usage(cmdtp);
 346
 347         /*
 348          * We should check for a valid hostname:
 349          * - Each label must be between 1 and 63 characters long
 350          * - the entire hostname has a maximum of 255 characters
 351          * - only the ASCII letters 'a' through 'z' (case-insensitive),
 352          *   the digits '0' through '9', and the hyphen
 353          * - cannot begin or end with a hyphen
 354          * - no other symbols, punctuation characters, or blank spaces are
 355          *   permitted
 356          * but hey - this is a minimalist implmentation, so only check length
 357          * and let the name server deal with things.
 358          */
 359         if (strlen(argv[1]) >= 255) {
 360                 printf("dns error: hostname too long\n");
 361                 return 1;
 362         }
 363
 364         NetDNSResolve = argv[1];
 365
 366         if (argc == 3)
 367                 NetDNSenvvar = argv[2];
 368         else
 369                 NetDNSenvvar = NULL;
 370
 371         if (NetLoop(DNS) < 0) {
 372                 printf("dns lookup of %s failed, check setup\n", argv[1]);
 373                 return 1;
 374         }
 375
 376         return 0;
 377 }
 378
 379 U_BOOT_CMD(
 380         dns,    3,      1,      do_dns,
 381         "lookup the IP of a hostname",
 382         "hostname [envvar]"
 383 );
 384
 385 #endif  /* CONFIG_CMD_DNS */