git.ozlabs.org Git - petitboot/blob - discover/platform-powerpc.c

   1
   2 #include <assert.h>
   3 #include <string.h>
   4 #include <stdlib.h>
   5 #include <limits.h>
   6 #include <errno.h>
   7 #include <sys/types.h>
   8 #include <sys/wait.h>
   9 #include <sys/fcntl.h>
  10 #include <sys/stat.h>
  11 #include <asm/byteorder.h>
  12
  13 #include <file/file.h>
  14 #include <talloc/talloc.h>
  15 #include <list/list.h>
  16 #include <log/log.h>
  17 #include <process/process.h>
  18 #include <types/types.h>
  19
  20 #include "hostboot.h"
  21 #include "platform.h"
  22 #include "ipmi.h"
  23 #include "dt.h"
  24
  25 static const char *partition = "common";
  26 static const char *sysparams_dir = "/sys/firmware/opal/sysparams/";
  27 static const char *devtree_dir = "/proc/device-tree/";
  28 static const int ipmi_timeout = 5000; /* milliseconds. */
  29
  30 struct param {
  31         char                    *name;
  32         char                    *value;
  33         bool                    modified;
  34         struct list_item        list;
  35 };
  36
  37 struct platform_powerpc {
  38         struct list     params;
  39         struct ipmi     *ipmi;
  40         bool            ipmi_bootdev_persistent;
  41         int             (*get_ipmi_bootdev)(
  42                                 struct platform_powerpc *platform,
  43                                 uint8_t *bootdev, bool *persistent);
  44         int             (*clear_ipmi_bootdev)(
  45                                 struct platform_powerpc *platform,
  46                                 bool persistent);
  47         int             (*set_os_boot_sensor)(
  48                                 struct platform_powerpc *platform);
  49         void            (*get_platform_versions)(struct system_info *info);
  50 };
  51
  52 static const char *known_params[] = {
  53         "auto-boot?",
  54         "petitboot,network",
  55         "petitboot,timeout",
  56         "petitboot,bootdevs",
  57         "petitboot,language",
  58         "petitboot,debug?",
  59         "petitboot,write?",
  60         "petitboot,snapshots?",
  61         "petitboot,console",
  62         "petitboot,http_proxy",
  63         "petitboot,https_proxy",
  64         NULL,
  65 };
  66
  67 #define to_platform_powerpc(p) \
  68         (struct platform_powerpc *)(p->platform_data)
  69
  70 static bool param_is_known(const char *param, unsigned int len)
  71 {
  72         const char *known_param;
  73         unsigned int i;
  74
  75         for (i = 0; known_params[i]; i++) {
  76                 known_param = known_params[i];
  77                 if (len == strlen(known_param) &&
  78                                 !strncmp(param, known_param, len))
  79                         return true;
  80         }
  81
  82         return false;
  83 }
  84
  85 static int parse_nvram_params(struct platform_powerpc *platform,
  86                 char *buf, int len)
  87 {
  88         char *pos, *name, *value;
  89         unsigned int paramlen;
  90         int i, count;
  91
  92         /* discard 2 header lines:
  93          * "common" partiton"
  94          * ------------------
  95          */
  96         pos = buf;
  97         count = 0;
  98
  99         for (i = 0; i < len; i++) {
 100                 if (pos[i] == '\n')
 101                         count++;
 102                 if (count == 2)
 103                         break;
 104         }
 105
 106         if (i == len) {
 107                 fprintf(stderr, "failure parsing nvram output\n");
 108                 return -1;
 109         }
 110
 111         for (pos = buf + i; pos < buf + len; pos += paramlen + 1) {
 112                 unsigned int namelen;
 113                 struct param *param;
 114                 char *newline;
 115
 116                 newline = strchr(pos, '\n');
 117                 if (!newline)
 118                         break;
 119
 120                 *newline = '\0';
 121
 122                 paramlen = strlen(pos);
 123
 124                 name = pos;
 125                 value = strchr(pos, '=');
 126                 if (!value)
 127                         continue;
 128
 129                 namelen = value - name;
 130                 if (namelen == 0)
 131                         continue;
 132
 133                 if (!param_is_known(name, namelen))
 134                         continue;
 135
 136                 value++;
 137
 138                 param = talloc(platform, struct param);
 139                 param->modified = false;
 140                 param->name = talloc_strndup(platform, name, namelen);
 141                 param->value = talloc_strdup(platform, value);
 142                 list_add(&platform->params, &param->list);
 143         }
 144
 145         return 0;
 146 }
 147
 148 static int parse_nvram(struct platform_powerpc *platform)
 149 {
 150         struct process *process;
 151         const char *argv[5];
 152         int rc;
 153
 154         argv[0] = "nvram";
 155         argv[1] = "--print-config";
 156         argv[2] = "--partition";
 157         argv[3] = partition;
 158         argv[4] = NULL;
 159
 160         process = process_create(platform);
 161         process->path = "nvram";
 162         process->argv = argv;
 163         process->keep_stdout = true;
 164
 165         rc = process_run_sync(process);
 166
 167         if (rc || !process_exit_ok(process)) {
 168                 fprintf(stderr, "nvram process returned "
 169                                 "non-zero exit status\n");
 170                 rc = -1;
 171         } else {
 172                 rc = parse_nvram_params(platform, process->stdout_buf,
 173                                             process->stdout_len);
 174         }
 175
 176         process_release(process);
 177         return rc;
 178 }
 179
 180 static int write_nvram(struct platform_powerpc *platform)
 181 {
 182         struct process *process;
 183         struct param *param;
 184         const char *argv[6];
 185         int rc = 0;
 186
 187         argv[0] = "nvram";
 188         argv[1] = "--update-config";
 189         argv[2] = NULL;
 190         argv[3] = "--partition";
 191         argv[4] = partition;
 192         argv[5] = NULL;
 193
 194         process = process_create(platform);
 195         process->path = "nvram";
 196         process->argv = argv;
 197
 198         list_for_each_entry(&platform->params, param, list) {
 199                 char *paramstr;
 200
 201                 if (!param->modified)
 202                         continue;
 203
 204                 paramstr = talloc_asprintf(platform, "%s=%s",
 205                                 param->name, param->value);
 206                 argv[2] = paramstr;
 207
 208                 rc = process_run_sync(process);
 209
 210                 talloc_free(paramstr);
 211
 212                 if (rc || !process_exit_ok(process)) {
 213                         rc = -1;
 214                         pb_log("nvram update process returned "
 215                                         "non-zero exit status\n");
 216                         break;
 217                 }
 218         }
 219
 220         process_release(process);
 221         return rc;
 222 }
 223
 224 static const char *get_param(struct platform_powerpc *platform,
 225                 const char *name)
 226 {
 227         struct param *param;
 228
 229         list_for_each_entry(&platform->params, param, list)
 230                 if (!strcmp(param->name, name))
 231                         return param->value;
 232         return NULL;
 233 }
 234
 235 static void set_param(struct platform_powerpc *platform, const char *name,
 236                 const char *value)
 237 {
 238         struct param *param;
 239
 240         list_for_each_entry(&platform->params, param, list) {
 241                 if (strcmp(param->name, name))
 242                         continue;
 243
 244                 if (!strcmp(param->value, value))
 245                         return;
 246
 247                 talloc_free(param->value);
 248                 param->value = talloc_strdup(param, value);
 249                 param->modified = true;
 250                 return;
 251         }
 252
 253
 254         param = talloc(platform, struct param);
 255         param->modified = true;
 256         param->name = talloc_strdup(platform, name);
 257         param->value = talloc_strdup(platform, value);
 258         list_add(&platform->params, &param->list);
 259 }
 260
 261 static int parse_hwaddr(struct interface_config *ifconf, char *str)
 262 {
 263         int i;
 264
 265         if (strlen(str) != strlen("00:00:00:00:00:00"))
 266                 return -1;
 267
 268         for (i = 0; i < HWADDR_SIZE; i++) {
 269                 char byte[3], *endp;
 270                 unsigned long x;
 271
 272                 byte[0] = str[i * 3 + 0];
 273                 byte[1] = str[i * 3 + 1];
 274                 byte[2] = '\0';
 275
 276                 x = strtoul(byte, &endp, 16);
 277                 if (endp != byte + 2)
 278                         return -1;
 279
 280                 ifconf->hwaddr[i] = x & 0xff;
 281         }
 282
 283         return 0;
 284 }
 285
 286 static int parse_one_interface_config(struct config *config,
 287                 char *confstr)
 288 {
 289         struct interface_config *ifconf;
 290         char *tok, *saveptr;
 291
 292         ifconf = talloc_zero(config, struct interface_config);
 293
 294         if (!confstr || !strlen(confstr))
 295                 goto out_err;
 296
 297         /* first token should be the mac address */
 298         tok = strtok_r(confstr, ",", &saveptr);
 299         if (!tok)
 300                 goto out_err;
 301
 302         if (parse_hwaddr(ifconf, tok))
 303                 goto out_err;
 304
 305         /* second token is the method */
 306         tok = strtok_r(NULL, ",", &saveptr);
 307         if (!tok || !strlen(tok) || !strcmp(tok, "ignore")) {
 308                 ifconf->ignore = true;
 309
 310         } else if (!strcmp(tok, "dhcp")) {
 311                 ifconf->method = CONFIG_METHOD_DHCP;
 312
 313         } else if (!strcmp(tok, "static")) {
 314                 ifconf->method = CONFIG_METHOD_STATIC;
 315
 316                 /* ip/mask, [optional] gateway, [optional] url */
 317                 tok = strtok_r(NULL, ",", &saveptr);
 318                 if (!tok)
 319                         goto out_err;
 320                 ifconf->static_config.address =
 321                         talloc_strdup(ifconf, tok);
 322
 323                 tok = strtok_r(NULL, ",", &saveptr);
 324                 if (tok) {
 325                         ifconf->static_config.gateway =
 326                                 talloc_strdup(ifconf, tok);
 327                 }
 328
 329                 tok = strtok_r(NULL, ",", &saveptr);
 330                 if (tok) {
 331                         ifconf->static_config.url =
 332                                 talloc_strdup(ifconf, tok);
 333                 }
 334
 335         } else {
 336                 pb_log("Unknown network configuration method %s\n", tok);
 337                 goto out_err;
 338         }
 339
 340         config->network.interfaces = talloc_realloc(config,
 341                         config->network.interfaces,
 342                         struct interface_config *,
 343                         ++config->network.n_interfaces);
 344
 345         config->network.interfaces[config->network.n_interfaces - 1] = ifconf;
 346
 347         return 0;
 348 out_err:
 349         talloc_free(ifconf);
 350         return -1;
 351 }
 352
 353 static int parse_one_dns_config(struct config *config,
 354                 char *confstr)
 355 {
 356         char *tok, *saveptr = NULL;
 357
 358         for (tok = strtok_r(confstr, ",", &saveptr); tok;
 359                         tok = strtok_r(NULL, ",", &saveptr)) {
 360
 361                 char *server = talloc_strdup(config, tok);
 362
 363                 config->network.dns_servers = talloc_realloc(config,
 364                                 config->network.dns_servers, const char *,
 365                                 ++config->network.n_dns_servers);
 366
 367                 config->network.dns_servers[config->network.n_dns_servers - 1]
 368                                 = server;
 369         }
 370
 371         return 0;
 372 }
 373
 374 static void populate_network_config(struct platform_powerpc *platform,
 375                 struct config *config)
 376 {
 377         char *val, *saveptr = NULL;
 378         const char *cval;
 379         int i;
 380
 381         cval = get_param(platform, "petitboot,network");
 382         if (!cval || !strlen(cval))
 383                 return;
 384
 385         val = talloc_strdup(config, cval);
 386
 387         for (i = 0; ; i++) {
 388                 char *tok;
 389
 390                 tok = strtok_r(i == 0 ? val : NULL, " ", &saveptr);
 391                 if (!tok)
 392                         break;
 393
 394                 if (!strncasecmp(tok, "dns,", strlen("dns,")))
 395                         parse_one_dns_config(config, tok + strlen("dns,"));
 396                 else
 397                         parse_one_interface_config(config, tok);
 398
 399         }
 400
 401         talloc_free(val);
 402 }
 403
 404 static int read_bootdev(void *ctx, char **pos, struct autoboot_option *opt)
 405 {
 406         char *delim = strchr(*pos, ' ');
 407         int len, prefix = 0, rc = -1;
 408         enum device_type type;
 409
 410         if (!strncmp(*pos, "uuid:", strlen("uuid:"))) {
 411                 prefix = strlen("uuid:");
 412                 opt->boot_type = BOOT_DEVICE_UUID;
 413                 rc = 0;
 414         } else if (!strncmp(*pos, "mac:", strlen("mac:"))) {
 415                 prefix = strlen("mac:");
 416                 opt->boot_type = BOOT_DEVICE_UUID;
 417                 rc = 0;
 418         } else {
 419                 type = find_device_type(*pos);
 420                 if (type != DEVICE_TYPE_UNKNOWN) {
 421                         opt->type = type;
 422                         opt->boot_type = BOOT_DEVICE_TYPE;
 423                         rc = 0;
 424                 }
 425         }
 426
 427         if (opt->boot_type == BOOT_DEVICE_UUID) {
 428                 if (delim)
 429                         len = (int)(delim - *pos) - prefix;
 430                 else
 431                         len = strlen(*pos);
 432
 433                 opt->uuid = talloc_strndup(ctx, *pos + prefix, len);
 434         }
 435
 436         /* Always advance pointer to next option or end */
 437         if (delim)
 438                 *pos = delim + 1;
 439         else
 440                 *pos += strlen(*pos);
 441
 442         return rc;
 443 }
 444
 445 static void populate_bootdev_config(struct platform_powerpc *platform,
 446                 struct config *config)
 447 {
 448         struct autoboot_option *opt, *new = NULL;
 449         char *pos, *end;
 450         unsigned int n_new = 0;
 451         const char *val;
 452
 453         /* Check for ordered bootdevs */
 454         val = get_param(platform, "petitboot,bootdevs");
 455         if (!val || !strlen(val)) {
 456                 pos = end = NULL;
 457         } else {
 458                 pos = talloc_strdup(config, val);
 459                 end = strchr(pos, '\0');
 460         }
 461
 462         while (pos && pos < end) {
 463                 opt = talloc(config, struct autoboot_option);
 464
 465                 if (read_bootdev(config, &pos, opt)) {
 466                         pb_log("bootdev config is in an unknown format "
 467                                "(expected uuid:... or mac:...)\n");
 468                         talloc_free(opt);
 469                         continue;
 470                 }
 471
 472                 new = talloc_realloc(config, new, struct autoboot_option,
 473                                      n_new + 1);
 474                 new[n_new] = *opt;
 475                 n_new++;
 476                 talloc_free(opt);
 477
 478         }
 479
 480         if (!n_new) {
 481                 /* If autoboot has been disabled, clear the default options */
 482                 if (!config->autoboot_enabled) {
 483                         talloc_free(config->autoboot_opts);
 484                         config->n_autoboot_opts = 0;
 485                 }
 486                 return;
 487         }
 488
 489         talloc_free(config->autoboot_opts);
 490         config->autoboot_opts = new;
 491         config->n_autoboot_opts = n_new;
 492 }
 493
 494 static void set_proxy_variables(struct config *config)
 495 {
 496         if (config->http_proxy)
 497                 setenv("http_proxy", config->http_proxy, 1);
 498         else
 499                 unsetenv("http_proxy");
 500
 501         if (config->https_proxy)
 502                 setenv("https_proxy", config->https_proxy, 1);
 503         else
 504                 unsetenv("https_proxy");
 505 }
 506
 507 static void populate_config(struct platform_powerpc *platform,
 508                 struct config *config)
 509 {
 510         const char *val;
 511         char *end;
 512         unsigned long timeout;
 513
 514         /* if the "auto-boot?' property is present and "false", disable auto
 515          * boot */
 516         val = get_param(platform, "auto-boot?");
 517         config->autoboot_enabled = !val || strcmp(val, "false");
 518
 519         val = get_param(platform, "petitboot,timeout");
 520         if (val) {
 521                 timeout = strtoul(val, &end, 10);
 522                 if (end != val) {
 523                         if (timeout >= INT_MAX)
 524                                 timeout = INT_MAX;
 525                         config->autoboot_timeout_sec = (int)timeout;
 526                 }
 527         }
 528
 529         val = get_param(platform, "petitboot,language");
 530         config->lang = val ? talloc_strdup(config, val) : NULL;
 531
 532         populate_network_config(platform, config);
 533
 534         populate_bootdev_config(platform, config);
 535
 536         if (!config->debug) {
 537                 val = get_param(platform, "petitboot,debug?");
 538                 config->debug = val && !strcmp(val, "true");
 539         }
 540
 541         val = get_param(platform, "petitboot,write?");
 542         if (val)
 543                 config->allow_writes = !strcmp(val, "true");
 544
 545         val = get_param(platform, "petitboot,snapshots?");
 546         if (val)
 547                 config->disable_snapshots = !strcmp(val, "false");
 548
 549         val = get_param(platform, "petitboot,console");
 550         if (val)
 551                 config->boot_console = talloc_strdup(config, val);
 552         /* If a full path is already set we don't want to override it */
 553         config->manual_console = config->boot_console &&
 554                                         !strchr(config->boot_console, '[');
 555
 556         val = get_param(platform, "petitboot,http_proxy");
 557         if (val)
 558                 config->http_proxy = talloc_strdup(config, val);
 559         val = get_param(platform, "petitboot,https_proxy");
 560         if (val)
 561                 config->https_proxy = talloc_strdup(config, val);
 562         set_proxy_variables(config);
 563 }
 564
 565 static char *iface_config_str(void *ctx, struct interface_config *config)
 566 {
 567         char *str;
 568
 569         /* todo: HWADDR size is hardcoded as 6, but we may need to handle
 570          * different hardware address formats */
 571         str = talloc_asprintf(ctx, "%02x:%02x:%02x:%02x:%02x:%02x,",
 572                         config->hwaddr[0], config->hwaddr[1],
 573                         config->hwaddr[2], config->hwaddr[3],
 574                         config->hwaddr[4], config->hwaddr[5]);
 575
 576         if (config->ignore) {
 577                 str = talloc_asprintf_append(str, "ignore");
 578
 579         } else if (config->method == CONFIG_METHOD_DHCP) {
 580                 str = talloc_asprintf_append(str, "dhcp");
 581
 582         } else if (config->method == CONFIG_METHOD_STATIC) {
 583                 str = talloc_asprintf_append(str, "static,%s%s%s%s%s",
 584                                 config->static_config.address,
 585                                 config->static_config.gateway ? "," : "",
 586                                 config->static_config.gateway ?: "",
 587                                 config->static_config.url ? "," : "",
 588                                 config->static_config.url ?: "");
 589         }
 590         return str;
 591 }
 592
 593 static char *dns_config_str(void *ctx, const char **dns_servers, int n)
 594 {
 595         char *str;
 596         int i;
 597
 598         str = talloc_strdup(ctx, "dns,");
 599         for (i = 0; i < n; i++) {
 600                 str = talloc_asprintf_append(str, "%s%s",
 601                                 i == 0 ? "" : ",",
 602                                 dns_servers[i]);
 603         }
 604
 605         return str;
 606 }
 607
 608 static void update_string_config(struct platform_powerpc *platform,
 609                 const char *name, const char *value)
 610 {
 611         const char *cur;
 612
 613         cur = get_param(platform, name);
 614
 615         /* don't set an empty parameter if it doesn't already exist */
 616         if (!cur && !strlen(value))
 617                 return;
 618
 619         set_param(platform, name, value);
 620 }
 621
 622 static void update_network_config(struct platform_powerpc *platform,
 623         struct config *config)
 624 {
 625         unsigned int i;
 626         char *val;
 627
 628         /*
 629          * Don't store IPMI overrides to NVRAM. If this was a persistent
 630          * override it was already stored in NVRAM by
 631          * get_ipmi_network_override()
 632          */
 633         if (config->network.n_interfaces &&
 634                 config->network.interfaces[0]->override)
 635                 return;
 636
 637         val = talloc_strdup(platform, "");
 638
 639         for (i = 0; i < config->network.n_interfaces; i++) {
 640                 char *iface_str = iface_config_str(platform,
 641                                         config->network.interfaces[i]);
 642                 val = talloc_asprintf_append(val, "%s%s",
 643                                 *val == '\0' ? "" : " ", iface_str);
 644                 talloc_free(iface_str);
 645         }
 646
 647         if (config->network.n_dns_servers) {
 648                 char *dns_str = dns_config_str(platform,
 649                                                 config->network.dns_servers,
 650                                                 config->network.n_dns_servers);
 651                 val = talloc_asprintf_append(val, "%s%s",
 652                                 *val == '\0' ? "" : " ", dns_str);
 653                 talloc_free(dns_str);
 654         }
 655
 656         update_string_config(platform, "petitboot,network", val);
 657
 658         talloc_free(val);
 659 }
 660
 661 static void update_bootdev_config(struct platform_powerpc *platform,
 662                 struct config *config)
 663 {
 664         char *val = NULL, *boot_str = NULL, *tmp = NULL;
 665         struct autoboot_option *opt;
 666         const char delim = ' ';
 667         unsigned int i;
 668
 669         if (!config->n_autoboot_opts)
 670                 val = "";
 671
 672         for (i = 0; i < config->n_autoboot_opts; i++) {
 673                 opt = &config->autoboot_opts[i];
 674                 switch (opt->boot_type) {
 675                         case BOOT_DEVICE_TYPE:
 676                                 boot_str = talloc_asprintf(config, "%s%c",
 677                                                 device_type_name(opt->type),
 678                                                 delim);
 679                                 break;
 680                         case BOOT_DEVICE_UUID:
 681                                 boot_str = talloc_asprintf(config, "uuid:%s%c",
 682                                                 opt->uuid, delim);
 683                                 break;
 684                         }
 685                         tmp = val = talloc_asprintf_append(val, "%s", boot_str);
 686         }
 687
 688         update_string_config(platform, "petitboot,bootdevs", val);
 689         talloc_free(tmp);
 690         if (boot_str)
 691                 talloc_free(boot_str);
 692 }
 693
 694 static int update_config(struct platform_powerpc *platform,
 695                 struct config *config, struct config *defaults)
 696 {
 697         char *tmp = NULL;
 698         const char *val;
 699
 700         if (config->autoboot_enabled == defaults->autoboot_enabled)
 701                 val = "";
 702         else
 703                 val = config->autoboot_enabled ? "true" : "false";
 704         update_string_config(platform, "auto-boot?", val);
 705
 706         if (config->autoboot_timeout_sec == defaults->autoboot_timeout_sec)
 707                 val = "";
 708         else
 709                 val = tmp = talloc_asprintf(platform, "%d",
 710                                 config->autoboot_timeout_sec);
 711
 712         if (config->ipmi_bootdev == IPMI_BOOTDEV_INVALID &&
 713             platform->clear_ipmi_bootdev) {
 714                 platform->clear_ipmi_bootdev(platform,
 715                                 config->ipmi_bootdev_persistent);
 716                 config->ipmi_bootdev = IPMI_BOOTDEV_NONE;
 717                 config->ipmi_bootdev_persistent = false;
 718         }
 719
 720         update_string_config(platform, "petitboot,timeout", val);
 721         if (tmp)
 722                 talloc_free(tmp);
 723
 724         val = config->lang ?: "";
 725         update_string_config(platform, "petitboot,language", val);
 726
 727         if (config->allow_writes == defaults->allow_writes)
 728                 val = "";
 729         else
 730                 val = config->allow_writes ? "true" : "false";
 731         update_string_config(platform, "petitboot,write?", val);
 732
 733         if (!config->manual_console) {
 734                 val = config->boot_console ?: "";
 735                 update_string_config(platform, "petitboot,console", val);
 736         }
 737
 738         val = config->http_proxy ?: "";
 739         update_string_config(platform, "petitboot,http_proxy", val);
 740         val = config->https_proxy ?: "";
 741         update_string_config(platform, "petitboot,https_proxy", val);
 742         set_proxy_variables(config);
 743
 744         update_network_config(platform, config);
 745
 746         update_bootdev_config(platform, config);
 747
 748         return write_nvram(platform);
 749 }
 750
 751 static void set_ipmi_bootdev(struct config *config, enum ipmi_bootdev bootdev,
 752                 bool persistent)
 753 {
 754         config->ipmi_bootdev = bootdev;
 755         config->ipmi_bootdev_persistent = persistent;
 756
 757         switch (bootdev) {
 758         case IPMI_BOOTDEV_NONE:
 759         case IPMI_BOOTDEV_DISK:
 760         case IPMI_BOOTDEV_NETWORK:
 761         case IPMI_BOOTDEV_CDROM:
 762         default:
 763                 break;
 764         case IPMI_BOOTDEV_SETUP:
 765                 config->autoboot_enabled = false;
 766                 break;
 767         case IPMI_BOOTDEV_SAFE:
 768                 config->autoboot_enabled = false;
 769                 config->safe_mode = true;
 770                 break;
 771         }
 772 }
 773
 774 static int read_bootdev_sysparam(const char *name, uint8_t *val)
 775 {
 776         uint8_t buf[2];
 777         char path[50];
 778         int fd, rc;
 779
 780         assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
 781         snprintf(path, sizeof(path), "%s%s", sysparams_dir, name);
 782
 783         fd = open(path, O_RDONLY);
 784         if (fd < 0) {
 785                 pb_debug("powerpc: can't access sysparam %s\n",
 786                                 name);
 787                 return -1;
 788         }
 789
 790         rc = read(fd, buf, sizeof(buf));
 791
 792         close(fd);
 793
 794         /* bootdev definitions should only be one byte in size */
 795         if (rc != 1) {
 796                 pb_debug("powerpc: sysparam %s read returned %d\n",
 797                                 name, rc);
 798                 return -1;
 799         }
 800
 801         pb_debug("powerpc: sysparam %s: 0x%02x\n", name, buf[0]);
 802
 803         if (!ipmi_bootdev_is_valid(buf[0]))
 804                 return -1;
 805
 806         *val = buf[0];
 807         return 0;
 808 }
 809
 810 static int write_bootdev_sysparam(const char *name, uint8_t val)
 811 {
 812         char path[50];
 813         int fd, rc;
 814
 815         assert(strlen(sysparams_dir) + strlen(name) < sizeof(path));
 816         snprintf(path, sizeof(path), "%s%s", sysparams_dir, name);
 817
 818         fd = open(path, O_WRONLY);
 819         if (fd < 0) {
 820                 pb_debug("powerpc: can't access sysparam %s for writing\n",
 821                                 name);
 822                 return -1;
 823         }
 824
 825         for (;;) {
 826                 errno = 0;
 827                 rc = write(fd, &val, sizeof(val));
 828                 if (rc == sizeof(val)) {
 829                         rc = 0;
 830                         break;
 831                 }
 832
 833                 if (rc <= 0 && errno != EINTR) {
 834                         pb_log("powerpc: error updating sysparam %s: %s",
 835                                         name, strerror(errno));
 836                         rc = -1;
 837                         break;
 838                 }
 839         }
 840
 841         close(fd);
 842
 843         if (!rc)
 844                 pb_debug("powerpc: set sysparam %s: 0x%02x\n", name, val);
 845
 846         return rc;
 847 }
 848
 849 static int clear_ipmi_bootdev_sysparams(
 850                 struct platform_powerpc *platform __attribute__((unused)),
 851                 bool persistent)
 852 {
 853         if (persistent) {
 854                 /* invalidate default-boot-device setting */
 855                 write_bootdev_sysparam("default-boot-device", 0xff);
 856         } else {
 857                 /* invalidate next-boot-device setting */
 858                 write_bootdev_sysparam("next-boot-device", 0xff);
 859         }
 860         return 0;
 861 }
 862
 863 static int get_ipmi_bootdev_sysparams(
 864                 struct platform_powerpc *platform __attribute__((unused)),
 865                 uint8_t *bootdev, bool *persistent)
 866 {
 867         uint8_t next_bootdev, default_bootdev;
 868         bool next_valid, default_valid;
 869         int rc;
 870
 871         rc = read_bootdev_sysparam("next-boot-device", &next_bootdev);
 872         next_valid = rc == 0;
 873
 874         rc = read_bootdev_sysparam("default-boot-device", &default_bootdev);
 875         default_valid = rc == 0;
 876
 877         /* nothing valid? no need to change the config */
 878         if (!next_valid && !default_valid)
 879                 return -1;
 880
 881         *persistent = !next_valid;
 882         *bootdev = next_valid ? next_bootdev : default_bootdev;
 883         return 0;
 884 }
 885
 886 static int clear_ipmi_bootdev_ipmi(struct platform_powerpc *platform,
 887                                    bool persistent __attribute__((unused)))
 888 {
 889         uint16_t resp_len;
 890         uint8_t resp[1];
 891         uint8_t req[] = {
 892                 0x05, /* parameter selector: boot flags */
 893                 0x80, /* data 1: valid */
 894                 0x00, /* data 2: bootdev: no override */
 895                 0x00, /* data 3: system defaults */
 896                 0x00, /* data 4: no request for shared mode, mux defaults */
 897                 0x00, /* data 5: no instance request */
 898         };
 899
 900         resp_len = sizeof(resp);
 901
 902         ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
 903                         IPMI_CMD_CHASSIS_SET_SYSTEM_BOOT_OPTIONS,
 904                         req, sizeof(req),
 905                         resp, &resp_len,
 906                         ipmi_timeout);
 907         return 0;
 908 }
 909
 910 static int get_ipmi_bootdev_ipmi(struct platform_powerpc *platform,
 911                 uint8_t *bootdev, bool *persistent)
 912 {
 913         uint16_t resp_len;
 914         uint8_t resp[8];
 915         int rc;
 916         uint8_t req[] = {
 917                 0x05, /* parameter selector: boot flags */
 918                 0x00, /* no set selector */
 919                 0x00, /* no block selector */
 920         };
 921
 922         resp_len = sizeof(resp);
 923         rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
 924                         IPMI_CMD_CHASSIS_GET_SYSTEM_BOOT_OPTIONS,
 925                         req, sizeof(req),
 926                         resp, &resp_len,
 927                         ipmi_timeout);
 928         if (rc) {
 929                 pb_log("platform: error reading IPMI boot options\n");
 930                 return -1;
 931         }
 932
 933         if (resp_len != sizeof(resp)) {
 934                 pb_log("platform: unexpected length (%d) in "
 935                                 "boot options response\n", resp_len);
 936                 return -1;
 937         }
 938
 939         pb_debug("IPMI get_bootdev response:\n");
 940         for (int i = 0; i < resp_len; i++)
 941                 pb_debug("%x ", resp[i]);
 942         pb_debug("\n");
 943
 944         if (resp[0] != 0) {
 945                 pb_log("platform: non-zero completion code %d from IPMI req\n",
 946                                 resp[0]);
 947                 return -1;
 948         }
 949
 950         /* check for correct parameter version */
 951         if ((resp[1] & 0xf) != 0x1) {
 952                 pb_log("platform: unexpected version (0x%x) in "
 953                                 "boot options response\n", resp[0]);
 954                 return -1;
 955         }
 956
 957         /* check for valid paramters */
 958         if (resp[2] & 0x80) {
 959                 pb_debug("platform: boot options are invalid/locked\n");
 960                 return -1;
 961         }
 962
 963         *persistent = false;
 964
 965         /* check for valid flags */
 966         if (!(resp[3] & 0x80)) {
 967                 pb_debug("platform: boot flags are invalid, ignoring\n");
 968                 return -1;
 969         }
 970
 971         *persistent = resp[3] & 0x40;
 972         *bootdev = (resp[4] >> 2) & 0x0f;
 973         return 0;
 974 }
 975
 976 static int set_ipmi_os_boot_sensor(struct platform_powerpc *platform)
 977 {
 978         int sensor_number;
 979         uint16_t resp_len;
 980         uint8_t resp[1];
 981         uint8_t req[] = {
 982                 0x00, /* sensor number: os boot */
 983                 0xA9, /* operation: set everything */
 984                 0x00, /* sensor reading: none */
 985                 0x40, /* assertion mask lsb: set state 6 */
 986                 0x00, /* assertion mask msb: none */
 987                 0x00, /* deassertion mask lsb: none */
 988                 0x00, /* deassertion mask msb: none */
 989                 0x00, /* event data 1: none */
 990                 0x00, /* event data 2: none */
 991                 0x00, /* event data 3: none */
 992         };
 993
 994         sensor_number = get_ipmi_sensor(platform, IPMI_SENSOR_ID_OS_BOOT);
 995         if (sensor_number < 0) {
 996                 pb_log("Couldn't find OS boot sensor in device tree\n");
 997                 return -1;
 998         }
 999
1000         req[0] = sensor_number;
1001
1002         resp_len = sizeof(resp);
1003
1004         ipmi_transaction(platform->ipmi, IPMI_NETFN_SE,
1005                         IPMI_CMD_SENSOR_SET,
1006                         req, sizeof(req),
1007                         resp, &resp_len,
1008                         ipmi_timeout); return 0;
1009
1010         return 0;
1011 }
1012
1013 static void get_ipmi_bmc_mac(struct platform *p, uint8_t *buf)
1014 {
1015         struct platform_powerpc *platform = p->platform_data;
1016         uint16_t resp_len = 8;
1017         uint8_t resp[8];
1018         uint8_t req[] = { 0x1, 0x5, 0x0, 0x0 };
1019         int i, rc;
1020
1021         rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_TRANSPORT,
1022                         IPMI_CMD_TRANSPORT_GET_LAN_PARAMS,
1023                         req, sizeof(req),
1024                         resp, &resp_len,
1025                         ipmi_timeout);
1026
1027         pb_debug("BMC MAC resp [%d][%d]:\n", rc, resp_len);
1028
1029         if (rc == 0 && resp_len > 0) {
1030                 for (i = 2; i < resp_len; i++) {
1031                         pb_debug(" %x", resp[i]);
1032                         buf[i - 2] = resp[i];
1033                 }
1034                 pb_debug("\n");
1035         }
1036
1037 }
1038
1039 /*
1040  * Retrieve info from the "Get Device ID" IPMI commands.
1041  * See Chapter 20.1 in the IPMIv2 specification.
1042  */
1043 static void get_ipmi_bmc_versions(struct platform *p, struct system_info *info)
1044 {
1045         struct platform_powerpc *platform = p->platform_data;
1046         uint16_t resp_len = 16;
1047         uint8_t resp[16], bcd;
1048         uint32_t aux_version;
1049         int i, rc;
1050
1051         /* Retrieve info from current side */
1052         rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_APP,
1053                         IPMI_CMD_APP_GET_DEVICE_ID,
1054                         NULL, 0,
1055                         resp, &resp_len,
1056                         ipmi_timeout);
1057
1058         pb_debug("BMC version resp [%d][%d]:\n", rc, resp_len);
1059         if (resp_len > 0) {
1060                 for (i = 0; i < resp_len; i++) {
1061                         pb_debug(" %x", resp[i]);
1062                 }
1063                 pb_debug("\n");
1064         }
1065
1066         if (rc == 0 && resp_len == 16) {
1067                 info->bmc_current = talloc_array(info, char *, 4);
1068                 info->n_bmc_current = 4;
1069
1070                 info->bmc_current[0] = talloc_asprintf(info, "Device ID: 0x%x",
1071                                                 resp[1]);
1072                 info->bmc_current[1] = talloc_asprintf(info, "Device Rev: 0x%x",
1073                                                 resp[2]);
1074                 bcd = resp[4] & 0x0f;
1075                 bcd += 10 * (resp[4] >> 4);
1076                 memcpy(&aux_version, &resp[12], sizeof(aux_version));
1077                 info->bmc_current[2] = talloc_asprintf(info,
1078                                                 "Firmware version: %u.%02u.%05u",
1079                                                 resp[3], bcd, aux_version);
1080                 bcd = resp[5] & 0x0f;
1081                 bcd += 10 * (resp[5] >> 4);
1082                 info->bmc_current[3] = talloc_asprintf(info, "IPMI version: %u",
1083                                                 bcd);
1084         } else
1085                 pb_log("Failed to retrieve Device ID from IPMI\n");
1086
1087         /* Retrieve info from golden side */
1088         memset(resp, 0, sizeof(resp));
1089         resp_len = 16;
1090         rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_AMI,
1091                         IPMI_CMD_APP_GET_DEVICE_ID_GOLDEN,
1092                         NULL, 0,
1093                         resp, &resp_len,
1094                         ipmi_timeout);
1095
1096         pb_debug("BMC golden resp [%d][%d]:\n", rc, resp_len);
1097         if (resp_len > 0) {
1098                 for (i = 0; i < resp_len; i++) {
1099                         pb_debug(" %x", resp[i]);
1100                 }
1101                 pb_debug("\n");
1102         }
1103
1104         if (rc == 0 && resp_len == 16) {
1105                 info->bmc_golden = talloc_array(info, char *, 4);
1106                 info->n_bmc_golden = 4;
1107
1108                 info->bmc_golden[0] = talloc_asprintf(info, "Device ID: 0x%x",
1109                                                 resp[1]);
1110                 info->bmc_golden[1] = talloc_asprintf(info, "Device Rev: 0x%x",
1111                                                 resp[2]);
1112                 bcd = resp[4] & 0x0f;
1113                 bcd += 10 * (resp[4] >> 4);
1114                 memcpy(&aux_version, &resp[12], sizeof(aux_version));
1115                 info->bmc_golden[2] = talloc_asprintf(info,
1116                                                 "Firmware version: %u.%02u.%u",
1117                                                 resp[3], bcd, aux_version);
1118                 bcd = resp[5] & 0x0f;
1119                 bcd += 10 * (resp[5] >> 4);
1120                 info->bmc_golden[3] = talloc_asprintf(info, "IPMI version: %u",
1121                                                 bcd);
1122         } else
1123                 pb_log("Failed to retrieve Golden Device ID from IPMI\n");
1124 }
1125
1126 static void get_ipmi_network_override(struct platform_powerpc *platform,
1127                         struct config *config)
1128 {
1129         uint16_t min_len = 12, resp_len = 53, version;
1130         const uint32_t magic_value = 0x21706221;
1131         uint8_t resp[resp_len];
1132         uint32_t cookie;
1133         bool persistent;
1134         int i, rc;
1135         uint8_t req[] = {
1136                 0x61, /* parameter selector: OEM section (network) */
1137                 0x00, /* no set selector */
1138                 0x00, /* no block selector */
1139         };
1140
1141         rc = ipmi_transaction(platform->ipmi, IPMI_NETFN_CHASSIS,
1142                         IPMI_CMD_CHASSIS_GET_SYSTEM_BOOT_OPTIONS,
1143                         req, sizeof(req),
1144                         resp, &resp_len,
1145                         ipmi_timeout);
1146
1147         pb_debug("IPMI net override resp [%d][%d]:\n", rc, resp_len);
1148         if (resp_len > 0) {
1149                 for (i = 0; i < resp_len; i++) {
1150                         pb_debug(" %02x", resp[i]);
1151                         if (i && (i + 1) % 16 == 0 && i != resp_len - 1)
1152                                 pb_debug("\n");
1153                         else if (i && (i + 1) % 8 == 0)
1154                                 pb_debug(" ");
1155                 }
1156                 pb_debug("\n");
1157         }
1158
1159         if (rc) {
1160                 pb_debug("IPMI network config option unavailable\n");
1161                 return;
1162         }
1163
1164         if (resp_len < min_len) {
1165                 pb_debug("IPMI net response too small\n");
1166                 return;
1167         }
1168
1169         if (resp[0] != 0) {
1170                 pb_log("platform: non-zero completion code %d from IPMI network req\n",
1171                        resp[0]);
1172                 return;
1173         }
1174
1175         /* Check for correct parameter version */
1176         if ((resp[1] & 0xf) != 0x1) {
1177                 pb_log("platform: unexpected version (0x%x) in network override response\n",
1178                        resp[0]);
1179                 return;
1180         }
1181
1182         /* Check that the parameters are valid */
1183         if (resp[2] & 0x80) {
1184                 pb_debug("platform: network override is invalid/locked\n");
1185                 return;
1186         }
1187
1188         /* Check for valid parameters in the boot flags section */
1189         if (!(resp[3] & 0x80)) {
1190                 pb_debug("platform: network override valid flag not set\n");
1191                 return;
1192         }
1193         /* Read the persistent flag; if it is set we need to save this config */
1194         persistent = resp[3] & 0x40;
1195         if (persistent)
1196                 pb_debug("platform: network override is persistent\n");
1197
1198         /* Check 4-byte cookie value */
1199         i = 4;
1200         memcpy(&cookie, &resp[i], sizeof(cookie));
1201         cookie = __be32_to_cpu(cookie);
1202         if (cookie != magic_value) {
1203                 pb_log("%s: Incorrect cookie %x\n", __func__, cookie);
1204                 return;
1205         }
1206         i += sizeof(cookie);
1207
1208         /* Check 2-byte version number */
1209         memcpy(&version, &resp[i], sizeof(version));
1210         version = __be16_to_cpu(version);
1211         i += sizeof(version);
1212         if (version != 1) {
1213                 pb_debug("Unexpected version: %u\n", version);
1214                 return;
1215         }
1216
1217         /* Interpret the rest of the interface config */
1218         rc = parse_ipmi_interface_override(config, &resp[i], resp_len - i);
1219
1220         if (!rc && persistent) {
1221                 /* Write this new config to NVRAM */
1222                 update_network_config(platform, config);
1223                 rc = write_nvram(platform);
1224                 if (rc)
1225                         pb_log("platform: Failed to save persistent interface override\n");
1226         }
1227 }
1228
1229 static void get_active_consoles(struct config *config)
1230 {
1231         struct stat sbuf;
1232         char *fsp_prop = NULL;
1233
1234         config->n_consoles = 2;
1235         config->consoles = talloc_array(config, char *, config->n_consoles);
1236         if (!config->consoles)
1237                 goto err;
1238
1239         config->consoles[0] = talloc_asprintf(config->consoles,
1240                                         "/dev/hvc0 [IPMI / Serial]");
1241         config->consoles[1] = talloc_asprintf(config->consoles,
1242                                         "/dev/tty1 [VGA]");
1243
1244         fsp_prop = talloc_asprintf(config, "%sfsps", devtree_dir);
1245         if (stat(fsp_prop, &sbuf) == 0) {
1246                 /* FSP based machines also have a separate serial console */
1247                 config->consoles = talloc_realloc(config, config->consoles,
1248                                                 char *, config->n_consoles + 1);
1249                 if (!config->consoles)
1250                         goto err;
1251                 config->consoles[config->n_consoles++] = talloc_asprintf(
1252                                                 config->consoles,
1253                                                 "/dev/hvc1 [Serial]");
1254         }
1255
1256         return;
1257 err:
1258         config->n_consoles = 0;
1259         pb_log("Failed to allocate memory for consoles\n");
1260 }
1261
1262 static int load_config(struct platform *p, struct config *config)
1263 {
1264         struct platform_powerpc *platform = to_platform_powerpc(p);
1265         int rc;
1266
1267         rc = parse_nvram(platform);
1268         if (rc)
1269                 return rc;
1270
1271         populate_config(platform, config);
1272
1273         if (platform->get_ipmi_bootdev) {
1274                 bool bootdev_persistent;
1275                 uint8_t bootdev = IPMI_BOOTDEV_INVALID;
1276                 rc = platform->get_ipmi_bootdev(platform, &bootdev,
1277                                 &bootdev_persistent);
1278                 if (!rc && ipmi_bootdev_is_valid(bootdev)) {
1279                         set_ipmi_bootdev(config, bootdev, bootdev_persistent);
1280                 }
1281         }
1282
1283         if (platform->ipmi)
1284                 get_ipmi_network_override(platform, config);
1285
1286         get_active_consoles(config);
1287
1288         return 0;
1289 }
1290
1291 static int save_config(struct platform *p, struct config *config)
1292 {
1293         struct platform_powerpc *platform = to_platform_powerpc(p);
1294         struct config *defaults;
1295         int rc;
1296
1297         defaults = talloc_zero(platform, struct config);
1298         config_set_defaults(defaults);
1299
1300         rc = update_config(platform, config, defaults);
1301
1302         talloc_free(defaults);
1303         return rc;
1304 }
1305
1306 static void pre_boot(struct platform *p, const struct config *config)
1307 {
1308         struct platform_powerpc *platform = to_platform_powerpc(p);
1309
1310         if (!config->ipmi_bootdev_persistent && platform->clear_ipmi_bootdev)
1311                 platform->clear_ipmi_bootdev(platform, false);
1312
1313         if (platform->set_os_boot_sensor)
1314                 platform->set_os_boot_sensor(platform);
1315 }
1316
1317 static int get_sysinfo(struct platform *p, struct system_info *sysinfo)
1318 {
1319         struct platform_powerpc *platform = p->platform_data;
1320         char *buf, *filename;
1321         int len, rc;
1322
1323         filename = talloc_asprintf(platform, "%smodel", devtree_dir);
1324         rc = read_file(platform, filename, &buf, &len);
1325         if (rc == 0)
1326                 sysinfo->type = talloc_steal(sysinfo, buf);
1327         talloc_free(filename);
1328
1329         filename = talloc_asprintf(platform, "%ssystem-id", devtree_dir);
1330         rc = read_file(platform, filename, &buf, &len);
1331         if (rc == 0)
1332                 sysinfo->identifier = talloc_steal(sysinfo, buf);
1333         talloc_free(filename);
1334
1335         sysinfo->bmc_mac = talloc_zero_size(sysinfo, HWADDR_SIZE);
1336         if (platform->ipmi)
1337                 get_ipmi_bmc_mac(p, sysinfo->bmc_mac);
1338
1339         if (platform->ipmi)
1340                 get_ipmi_bmc_versions(p, sysinfo);
1341
1342         if (platform->get_platform_versions)
1343                 platform->get_platform_versions(sysinfo);
1344
1345         return 0;
1346 }
1347
1348 static bool probe(struct platform *p, void *ctx)
1349 {
1350         struct platform_powerpc *platform;
1351         struct stat statbuf;
1352         bool bmc_present;
1353         int rc;
1354
1355         /* we need a device tree */
1356         rc = stat("/proc/device-tree", &statbuf);
1357         if (rc)
1358                 return false;
1359
1360         if (!S_ISDIR(statbuf.st_mode))
1361                 return false;
1362
1363         platform = talloc_zero(ctx, struct platform_powerpc);
1364         list_init(&platform->params);
1365
1366         p->platform_data = platform;
1367
1368         bmc_present = stat("/proc/device-tree/bmc", &statbuf) == 0;
1369
1370         if (ipmi_present() && bmc_present) {
1371                 pb_debug("platform: using direct IPMI for IPMI paramters\n");
1372                 platform->ipmi = ipmi_open(platform);
1373                 platform->get_ipmi_bootdev = get_ipmi_bootdev_ipmi;
1374                 platform->clear_ipmi_bootdev = clear_ipmi_bootdev_ipmi;
1375                 platform->set_os_boot_sensor = set_ipmi_os_boot_sensor;
1376         } else if (!stat(sysparams_dir, &statbuf)) {
1377                 pb_debug("platform: using sysparams for IPMI paramters\n");
1378                 platform->get_ipmi_bootdev = get_ipmi_bootdev_sysparams;
1379                 platform->clear_ipmi_bootdev = clear_ipmi_bootdev_sysparams;
1380
1381         } else {
1382                 pb_log("platform: no IPMI parameter support\n");
1383         }
1384
1385         if (bmc_present)
1386                 platform->get_platform_versions = hostboot_load_versions;
1387
1388         return true;
1389 }
1390
1391
1392 static struct platform platform_powerpc = {
1393         .name                   = "powerpc",
1394         .dhcp_arch_id           = 0x000e,
1395         .probe                  = probe,
1396         .load_config            = load_config,
1397         .save_config            = save_config,
1398         .pre_boot               = pre_boot,
1399         .get_sysinfo            = get_sysinfo,
1400 };
1401
1402 register_platform(platform_powerpc);