common/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 int do_tftpput(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  46 {
  47         int ret;
  48
  49         ret = netboot_common(TFTPPUT, cmdtp, argc, argv);
  50         return ret;
  51 }
  52
  53 U_BOOT_CMD(
  54         tftpput,        4,      1,      do_tftpput,
  55         "TFTP put command, for uploading files to a server",
  56         "Address Size [[hostIPaddr:]filename]"
  57 );
  58 #endif
  59
  60 #ifdef CONFIG_CMD_TFTPSRV
  61 static int do_tftpsrv(cmd_tbl_t *cmdtp, int flag, int argc, char *const argv[])
  62 {
  63         return netboot_common(TFTPSRV, cmdtp, argc, argv);
  64 }
  65
  66 U_BOOT_CMD(
  67         tftpsrv,        2,      1,      do_tftpsrv,
  68         "act as a TFTP server and boot the first received file",
  69         "[loadAddress]\n"
  70         "Listen for an incoming TFTP transfer, receive a file and boot it.\n"
  71         "The transfer is aborted if a transfer has not been started after\n"
  72         "about 50 seconds or if Ctrl-C is pressed."
  73 );
  74 #endif
  75
  76
  77 #ifdef CONFIG_CMD_RARP
  78 int do_rarpb(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  79 {
  80         return netboot_common(RARP, cmdtp, argc, argv);
  81 }
  82
  83 U_BOOT_CMD(
  84         rarpboot,       3,      1,      do_rarpb,
  85         "boot image via network using RARP/TFTP protocol",
  86         "[loadAddress] [[hostIPaddr:]bootfilename]"
  87 );
  88 #endif
  89
  90 #if defined(CONFIG_CMD_DHCP)
  91 static int do_dhcp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
  92 {
  93         return netboot_common(DHCP, cmdtp, argc, argv);
  94 }
  95
  96 U_BOOT_CMD(
  97         dhcp,   3,      1,      do_dhcp,
  98         "boot image via network using DHCP/TFTP protocol",
  99         "[loadAddress] [[hostIPaddr:]bootfilename]"
 100 );
 101 #endif
 102
 103 #if defined(CONFIG_CMD_NFS)
 104 static int do_nfs(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 105 {
 106         return netboot_common(NFS, cmdtp, argc, argv);
 107 }
 108
 109 U_BOOT_CMD(
 110         nfs,    3,      1,      do_nfs,
 111         "boot image via network using NFS protocol",
 112         "[loadAddress] [[hostIPaddr:]bootfilename]"
 113 );
 114 #endif
 115
 116 static void netboot_update_env(void)
 117 {
 118         char tmp[22];
 119
 120         if (NetOurGatewayIP) {
 121                 ip_to_string(NetOurGatewayIP, tmp);
 122                 setenv("gatewayip", tmp);
 123         }
 124
 125         if (NetOurSubnetMask) {
 126                 ip_to_string(NetOurSubnetMask, tmp);
 127                 setenv("netmask", tmp);
 128         }
 129
 130         if (NetOurHostName[0])
 131                 setenv("hostname", NetOurHostName);
 132
 133         if (NetOurRootPath[0])
 134                 setenv("rootpath", NetOurRootPath);
 135
 136         if (NetOurIP) {
 137                 ip_to_string(NetOurIP, tmp);
 138                 setenv("ipaddr", tmp);
 139         }
 140 #if !defined(CONFIG_BOOTP_SERVERIP)
 141         /*
 142          * Only attempt to change serverip if net/bootp.c:BootpCopyNetParams()
 143          * could have set it
 144          */
 145         if (NetServerIP) {
 146                 ip_to_string(NetServerIP, tmp);
 147                 setenv("serverip", tmp);
 148         }
 149 #endif
 150         if (NetOurDNSIP) {
 151                 ip_to_string(NetOurDNSIP, tmp);
 152                 setenv("dnsip", tmp);
 153         }
 154 #if defined(CONFIG_BOOTP_DNS2)
 155         if (NetOurDNS2IP) {
 156                 ip_to_string(NetOurDNS2IP, tmp);
 157                 setenv("dnsip2", tmp);
 158         }
 159 #endif
 160         if (NetOurNISDomain[0])
 161                 setenv("domain", NetOurNISDomain);
 162
 163 #if defined(CONFIG_CMD_SNTP) \
 164     && defined(CONFIG_BOOTP_TIMEOFFSET)
 165         if (NetTimeOffset) {
 166                 sprintf(tmp, "%d", NetTimeOffset);
 167                 setenv("timeoffset", tmp);
 168         }
 169 #endif
 170 #if defined(CONFIG_CMD_SNTP) \
 171     && defined(CONFIG_BOOTP_NTPSERVER)
 172         if (NetNtpServerIP) {
 173                 ip_to_string(NetNtpServerIP, tmp);
 174                 setenv("ntpserverip", tmp);
 175         }
 176 #endif
 177 }
 178
 179 static int netboot_common(enum proto_t proto, cmd_tbl_t *cmdtp, int argc,
 180                 char * const argv[])
 181 {
 182         char *s;
 183         char *end;
 184         int   rcode = 0;
 185         int   size;
 186         ulong addr;
 187
 188         /* pre-set load_addr */
 189         if ((s = getenv("loadaddr")) != NULL) {
 190                 load_addr = simple_strtoul(s, NULL, 16);
 191         }
 192
 193         switch (argc) {
 194         case 1:
 195                 break;
 196
 197         case 2: /*
 198                  * Only one arg - accept two forms:
 199                  * Just load address, or just boot file name. The latter
 200                  * form must be written in a format which can not be
 201                  * mis-interpreted as a valid number.
 202                  */
 203                 addr = simple_strtoul(argv[1], &end, 16);
 204                 if (end == (argv[1] + strlen(argv[1])))
 205                         load_addr = addr;
 206                 else
 207                         copy_filename(BootFile, argv[1], sizeof(BootFile));
 208                 break;
 209
 210         case 3: load_addr = simple_strtoul(argv[1], NULL, 16);
 211                 copy_filename(BootFile, argv[2], sizeof(BootFile));
 212
 213                 break;
 214
 215 #ifdef CONFIG_CMD_TFTPPUT
 216         case 4:
 217                 if (strict_strtoul(argv[1], 16, &save_addr) < 0 ||
 218                         strict_strtoul(argv[2], 16, &save_size) < 0) {
 219                         printf("Invalid address/size\n");
 220                         return cmd_usage(cmdtp);
 221                 }
 222                 copy_filename(BootFile, argv[3], sizeof(BootFile));
 223                 break;
 224 #endif
 225         default:
 226                 bootstage_error(BOOTSTAGE_ID_NET_START);
 227                 return CMD_RET_USAGE;
 228         }
 229         bootstage_mark(BOOTSTAGE_ID_NET_START);
 230
 231         if ((size = NetLoop(proto)) < 0) {
 232                 bootstage_error(BOOTSTAGE_ID_NET_NETLOOP_OK);
 233                 return 1;
 234         }
 235         bootstage_mark(BOOTSTAGE_ID_NET_NETLOOP_OK);
 236
 237         /* NetLoop 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 0;
 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 < 0)
 254                 bootstage_error(BOOTSTAGE_ID_NET_DONE_ERR);
 255         else
 256                 bootstage_mark(BOOTSTAGE_ID_NET_DONE);
 257         return rcode;
 258 }
 259
 260 #if defined(CONFIG_CMD_PING)
 261 static int do_ping(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 262 {
 263         if (argc < 2)
 264                 return -1;
 265
 266         NetPingIP = string_to_ip(argv[1]);
 267         if (NetPingIP == 0)
 268                 return CMD_RET_USAGE;
 269
 270         if (NetLoop(PING) < 0) {
 271                 printf("ping failed; host %s is not alive\n", argv[1]);
 272                 return 1;
 273         }
 274
 275         printf("host %s is alive\n", argv[1]);
 276
 277         return 0;
 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
 289 static void cdp_update_env(void)
 290 {
 291         char tmp[16];
 292
 293         if (CDPApplianceVLAN != htons(-1)) {
 294                 printf("CDP offered appliance VLAN %d\n", ntohs(CDPApplianceVLAN));
 295                 VLAN_to_string(CDPApplianceVLAN, tmp);
 296                 setenv("vlan", tmp);
 297                 NetOurVLAN = CDPApplianceVLAN;
 298         }
 299
 300         if (CDPNativeVLAN != htons(-1)) {
 301                 printf("CDP offered native VLAN %d\n", ntohs(CDPNativeVLAN));
 302                 VLAN_to_string(CDPNativeVLAN, tmp);
 303                 setenv("nvlan", tmp);
 304                 NetOurNativeVLAN = CDPNativeVLAN;
 305         }
 306
 307 }
 308
 309 int do_cdp(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 310 {
 311         int r;
 312
 313         r = NetLoop(CDP);
 314         if (r < 0) {
 315                 printf("cdp failed; perhaps not a CISCO switch?\n");
 316                 return 1;
 317         }
 318
 319         cdp_update_env();
 320
 321         return 0;
 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)
 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                 NetNtpServerIP = getenv_IPaddr("ntpserverip");
 338                 if (NetNtpServerIP == 0) {
 339                         printf("ntpserverip not set\n");
 340                         return (1);
 341                 }
 342         } else {
 343                 NetNtpServerIP = string_to_ip(argv[1]);
 344                 if (NetNtpServerIP == 0) {
 345                         printf("Bad NTP server IP address\n");
 346                         return (1);
 347                 }
 348         }
 349
 350         toff = getenv("timeoffset");
 351         if (toff == NULL)
 352                 NetTimeOffset = 0;
 353         else
 354                 NetTimeOffset = simple_strtol(toff, NULL, 10);
 355
 356         if (NetLoop(SNTP) < 0) {
 357                 printf("SNTP failed: host %pI4 not responding\n",
 358                         &NetNtpServerIP);
 359                 return 1;
 360         }
 361
 362         return 0;
 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)
 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 1;
 393         }
 394
 395         NetDNSResolve = argv[1];
 396
 397         if (argc == 3)
 398                 NetDNSenvvar = argv[2];
 399         else
 400                 NetDNSenvvar = NULL;
 401
 402         if (NetLoop(DNS) < 0) {
 403                 printf("dns lookup of %s failed, check setup\n", argv[1]);
 404                 return 1;
 405         }
 406
 407         return 0;
 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)
 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 (NetLoop(LINKLOCAL) < 0)
 425                 return 1;
 426
 427         NetOurGatewayIP = 0;
 428         ip_to_string(NetOurGatewayIP, tmp);
 429         setenv("gatewayip", tmp);
 430
 431         ip_to_string(NetOurSubnetMask, tmp);
 432         setenv("netmask", tmp);
 433
 434         ip_to_string(NetOurIP, tmp);
 435         setenv("ipaddr", tmp);
 436         setenv("llipaddr", tmp); /* store this for next time */
 437
 438         return 0;
 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 */