post/post.c

   1 /*
   2  * (C) Copyright 2002
   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 #include <common.h>
  25 #include <stdio_dev.h>
  26 #include <watchdog.h>
  27 #include <div64.h>
  28 #include <post.h>
  29
  30 #ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
  31 #include <asm/gpio.h>
  32 #endif
  33
  34 #ifdef CONFIG_LOGBUFFER
  35 #include <logbuff.h>
  36 #endif
  37
  38 DECLARE_GLOBAL_DATA_PTR;
  39
  40 #define POST_MAX_NUMBER         32
  41
  42 #define BOOTMODE_MAGIC  0xDEAD0000
  43
  44 int post_init_f(void)
  45 {
  46         int res = 0;
  47         unsigned int i;
  48
  49         for (i = 0; i < post_list_size; i++) {
  50                 struct post_test *test = post_list + i;
  51
  52                 if (test->init_f && test->init_f())
  53                         res = -1;
  54         }
  55
  56         gd->post_init_f_time = post_time_ms(0);
  57         if (!gd->post_init_f_time)
  58                 printf("%s: post_time_ms not implemented\n", __FILE__);
  59
  60         return res;
  61 }
  62
  63 /*
  64  * Supply a default implementation for post_hotkeys_pressed() for boards
  65  * without hotkey support. We always return 0 here, so that the
  66  * long-running tests won't be started.
  67  *
  68  * Boards with hotkey support can override this weak default function
  69  * by defining one in their board specific code.
  70  */
  71 int __post_hotkeys_pressed(void)
  72 {
  73 #ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
  74         int ret;
  75         unsigned gpio = CONFIG_SYS_POST_HOTKEYS_GPIO;
  76
  77         ret = gpio_request(gpio, "hotkeys");
  78         if (ret) {
  79                 printf("POST: gpio hotkey request failed\n");
  80                 return 0;
  81         }
  82
  83         gpio_direction_input(gpio);
  84         ret = gpio_get_value(gpio);
  85         gpio_free(gpio);
  86
  87         return ret;
  88 #endif
  89
  90         return 0;       /* No hotkeys supported */
  91 }
  92 int post_hotkeys_pressed(void)
  93         __attribute__((weak, alias("__post_hotkeys_pressed")));
  94
  95
  96 void post_bootmode_init(void)
  97 {
  98         int bootmode = post_bootmode_get(0);
  99         int newword;
 100
 101         if (post_hotkeys_pressed() && !(bootmode & POST_POWERTEST))
 102                 newword = BOOTMODE_MAGIC | POST_SLOWTEST;
 103         else if (bootmode == 0)
 104                 newword = BOOTMODE_MAGIC | POST_POWERON;
 105         else if (bootmode == POST_POWERON || bootmode == POST_SLOWTEST)
 106                 newword = BOOTMODE_MAGIC | POST_NORMAL;
 107         else
 108                 /* Use old value */
 109                 newword = post_word_load() & ~POST_COLDBOOT;
 110
 111         if (bootmode == 0)
 112                 /* We are booting after power-on */
 113                 newword |= POST_COLDBOOT;
 114
 115         post_word_store(newword);
 116
 117         /* Reset activity record */
 118         gd->post_log_word = 0;
 119         gd->post_log_res = 0;
 120 }
 121
 122 int post_bootmode_get(unsigned int *last_test)
 123 {
 124         unsigned long word = post_word_load();
 125         int bootmode;
 126
 127         if ((word & 0xFFFF0000) != BOOTMODE_MAGIC)
 128                 return 0;
 129
 130         bootmode = word & 0x7F;
 131
 132         if (last_test && (bootmode & POST_POWERTEST))
 133                 *last_test = (word >> 8) & 0xFF;
 134
 135         return bootmode;
 136 }
 137
 138 /* POST tests run before relocation only mark status bits .... */
 139 static void post_log_mark_start(unsigned long testid)
 140 {
 141         gd->post_log_word |= testid;
 142 }
 143
 144 static void post_log_mark_succ(unsigned long testid)
 145 {
 146         gd->post_log_res |= testid;
 147 }
 148
 149 /* ... and the messages are output once we are relocated */
 150 void post_output_backlog(void)
 151 {
 152         int j;
 153
 154         for (j = 0; j < post_list_size; j++) {
 155                 if (gd->post_log_word & (post_list[j].testid)) {
 156                         post_log("POST %s ", post_list[j].cmd);
 157                         if (gd->post_log_res & post_list[j].testid)
 158                                 post_log("PASSED\n");
 159                         else {
 160                                 post_log("FAILED\n");
 161                                 show_boot_progress(-31);
 162                         }
 163                 }
 164         }
 165 }
 166
 167 static void post_bootmode_test_on(unsigned int last_test)
 168 {
 169         unsigned long word = post_word_load();
 170
 171         word |= POST_POWERTEST;
 172
 173         word |= (last_test & 0xFF) << 8;
 174
 175         post_word_store(word);
 176 }
 177
 178 static void post_bootmode_test_off(void)
 179 {
 180         unsigned long word = post_word_load();
 181
 182         word &= ~POST_POWERTEST;
 183
 184         post_word_store(word);
 185 }
 186
 187 #ifndef CONFIG_POST_SKIP_ENV_FLAGS
 188 static void post_get_env_flags(int *test_flags)
 189 {
 190         int  flag[] = {  POST_POWERON,   POST_NORMAL,   POST_SLOWTEST,
 191                          POST_CRITICAL };
 192         char *var[] = { "post_poweron", "post_normal", "post_slowtest",
 193                         "post_critical" };
 194         int varnum = ARRAY_SIZE(var);
 195         char list[128];                 /* long enough for POST list */
 196         char *name;
 197         char *s;
 198         int last;
 199         int i, j;
 200
 201         for (i = 0; i < varnum; i++) {
 202                 if (getenv_f(var[i], list, sizeof(list)) <= 0)
 203                         continue;
 204
 205                 for (j = 0; j < post_list_size; j++)
 206                         test_flags[j] &= ~flag[i];
 207
 208                 last = 0;
 209                 name = list;
 210                 while (!last) {
 211                         while (*name && *name == ' ')
 212                                 name++;
 213                         if (*name == 0)
 214                                 break;
 215                         s = name + 1;
 216                         while (*s && *s != ' ')
 217                                 s++;
 218                         if (*s == 0)
 219                                 last = 1;
 220                         else
 221                                 *s = 0;
 222
 223                         for (j = 0; j < post_list_size; j++) {
 224                                 if (strcmp(post_list[j].cmd, name) == 0) {
 225                                         test_flags[j] |= flag[i];
 226                                         break;
 227                                 }
 228                         }
 229
 230                         if (j == post_list_size)
 231                                 printf("No such test: %s\n", name);
 232
 233                         name = s + 1;
 234                 }
 235         }
 236 }
 237 #endif
 238
 239 static void post_get_flags(int *test_flags)
 240 {
 241         int j;
 242
 243         for (j = 0; j < post_list_size; j++)
 244                 test_flags[j] = post_list[j].flags;
 245
 246 #ifndef CONFIG_POST_SKIP_ENV_FLAGS
 247         post_get_env_flags(test_flags);
 248 #endif
 249
 250         for (j = 0; j < post_list_size; j++)
 251                 if (test_flags[j] & POST_POWERON)
 252                         test_flags[j] |= POST_SLOWTEST;
 253 }
 254
 255 void __show_post_progress(unsigned int test_num, int before, int result)
 256 {
 257 }
 258 void show_post_progress(unsigned int, int, int)
 259                         __attribute__((weak, alias("__show_post_progress")));
 260
 261 static int post_run_single(struct post_test *test,
 262                                 int test_flags, int flags, unsigned int i)
 263 {
 264         if ((flags & test_flags & POST_ALWAYS) &&
 265                 (flags & test_flags & POST_MEM)) {
 266                 WATCHDOG_RESET();
 267
 268                 if (!(flags & POST_REBOOT)) {
 269                         if ((test_flags & POST_REBOOT) &&
 270                                 !(flags & POST_MANUAL)) {
 271                                 post_bootmode_test_on(
 272                                         (gd->flags & GD_FLG_POSTFAIL) ?
 273                                                 POST_FAIL_SAVE | i : i);
 274                         }
 275
 276                         if (test_flags & POST_PREREL)
 277                                 post_log_mark_start(test->testid);
 278                         else
 279                                 post_log("POST %s ", test->cmd);
 280                 }
 281
 282                 show_post_progress(i, POST_BEFORE, POST_FAILED);
 283
 284                 if (test_flags & POST_PREREL) {
 285                         if ((*test->test)(flags) == 0) {
 286                                 post_log_mark_succ(test->testid);
 287                                 show_post_progress(i, POST_AFTER, POST_PASSED);
 288                         } else {
 289                                 show_post_progress(i, POST_AFTER, POST_FAILED);
 290                                 if (test_flags & POST_CRITICAL)
 291                                         gd->flags |= GD_FLG_POSTFAIL;
 292                                 if (test_flags & POST_STOP)
 293                                         gd->flags |= GD_FLG_POSTSTOP;
 294                         }
 295                 } else {
 296                         if ((*test->test)(flags) != 0) {
 297                                 post_log("FAILED\n");
 298                                 show_boot_progress(-32);
 299                                 show_post_progress(i, POST_AFTER, POST_FAILED);
 300                                 if (test_flags & POST_CRITICAL)
 301                                         gd->flags |= GD_FLG_POSTFAIL;
 302                                 if (test_flags & POST_STOP)
 303                                         gd->flags |= GD_FLG_POSTSTOP;
 304                         } else {
 305                                 post_log("PASSED\n");
 306                                 show_post_progress(i, POST_AFTER, POST_PASSED);
 307                         }
 308                 }
 309
 310                 if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL))
 311                         post_bootmode_test_off();
 312
 313                 return 0;
 314         } else {
 315                 return -1;
 316         }
 317 }
 318
 319 int post_run(char *name, int flags)
 320 {
 321         unsigned int i;
 322         int test_flags[POST_MAX_NUMBER];
 323
 324         post_get_flags(test_flags);
 325
 326         if (name == NULL) {
 327                 unsigned int last;
 328
 329                 if (gd->flags & GD_FLG_POSTSTOP)
 330                         return 0;
 331
 332                 if (post_bootmode_get(&last) & POST_POWERTEST) {
 333                         if (last & POST_FAIL_SAVE) {
 334                                 last &= ~POST_FAIL_SAVE;
 335                                 gd->flags |= GD_FLG_POSTFAIL;
 336                         }
 337                         if (last < post_list_size &&
 338                                 (flags & test_flags[last] & POST_ALWAYS) &&
 339                                 (flags & test_flags[last] & POST_MEM)) {
 340
 341                                 post_run_single(post_list + last,
 342                                                  test_flags[last],
 343                                                  flags | POST_REBOOT, last);
 344
 345                                 for (i = last + 1; i < post_list_size; i++) {
 346                                         if (gd->flags & GD_FLG_POSTSTOP)
 347                                                 break;
 348                                         post_run_single(post_list + i,
 349                                                          test_flags[i],
 350                                                          flags, i);
 351                                 }
 352                         }
 353                 } else {
 354                         for (i = 0; i < post_list_size; i++) {
 355                                 if (gd->flags & GD_FLG_POSTSTOP)
 356                                         break;
 357                                 post_run_single(post_list + i,
 358                                                  test_flags[i],
 359                                                  flags, i);
 360                         }
 361                 }
 362
 363                 return 0;
 364         } else {
 365                 for (i = 0; i < post_list_size; i++) {
 366                         if (strcmp(post_list[i].cmd, name) == 0)
 367                                 break;
 368                 }
 369
 370                 if (i < post_list_size) {
 371                         WATCHDOG_RESET();
 372                         return post_run_single(post_list + i,
 373                                                 test_flags[i],
 374                                                 flags, i);
 375                 } else {
 376                         return -1;
 377                 }
 378         }
 379 }
 380
 381 static int post_info_single(struct post_test *test, int full)
 382 {
 383         if (test->flags & POST_MANUAL) {
 384                 if (full)
 385                         printf("%s - %s\n"
 386                                 "  %s\n", test->cmd, test->name, test->desc);
 387                 else
 388                         printf("  %-15s - %s\n", test->cmd, test->name);
 389
 390                 return 0;
 391         } else {
 392                 return -1;
 393         }
 394 }
 395
 396 int post_info(char *name)
 397 {
 398         unsigned int i;
 399
 400         if (name == NULL) {
 401                 for (i = 0; i < post_list_size; i++)
 402                         post_info_single(post_list + i, 0);
 403
 404                 return 0;
 405         } else {
 406                 for (i = 0; i < post_list_size; i++) {
 407                         if (strcmp(post_list[i].cmd, name) == 0)
 408                                 break;
 409                 }
 410
 411                 if (i < post_list_size)
 412                         return post_info_single(post_list + i, 1);
 413                 else
 414                         return -1;
 415         }
 416 }
 417
 418 int post_log(char *format, ...)
 419 {
 420         va_list args;
 421         char printbuffer[CONFIG_SYS_PBSIZE];
 422
 423         va_start(args, format);
 424
 425         /* For this to work, printbuffer must be larger than
 426          * anything we ever want to print.
 427          */
 428         vsprintf(printbuffer, format, args);
 429         va_end(args);
 430
 431 #ifdef CONFIG_LOGBUFFER
 432         /* Send to the logbuffer */
 433         logbuff_log(printbuffer);
 434 #else
 435         /* Send to the stdout file */
 436         puts(printbuffer);
 437 #endif
 438
 439         return 0;
 440 }
 441
 442 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 443 void post_reloc(void)
 444 {
 445         unsigned int i;
 446
 447         /*
 448          * We have to relocate the test table manually
 449          */
 450         for (i = 0; i < post_list_size; i++) {
 451                 ulong addr;
 452                 struct post_test *test = post_list + i;
 453
 454                 if (test->name) {
 455                         addr = (ulong)(test->name) + gd->reloc_off;
 456                         test->name = (char *)addr;
 457                 }
 458
 459                 if (test->cmd) {
 460                         addr = (ulong)(test->cmd) + gd->reloc_off;
 461                         test->cmd = (char *)addr;
 462                 }
 463
 464                 if (test->desc) {
 465                         addr = (ulong)(test->desc) + gd->reloc_off;
 466                         test->desc = (char *)addr;
 467                 }
 468
 469                 if (test->test) {
 470                         addr = (ulong)(test->test) + gd->reloc_off;
 471                         test->test = (int (*)(int flags)) addr;
 472                 }
 473
 474                 if (test->init_f) {
 475                         addr = (ulong)(test->init_f) + gd->reloc_off;
 476                         test->init_f = (int (*)(void)) addr;
 477                 }
 478
 479                 if (test->reloc) {
 480                         addr = (ulong)(test->reloc) + gd->reloc_off;
 481                         test->reloc = (void (*)(void)) addr;
 482
 483                         test->reloc();
 484                 }
 485         }
 486 }
 487 #endif
 488
 489
 490 /*
 491  * Some tests (e.g. SYSMON) need the time when post_init_f started,
 492  * but we cannot use get_timer() at this point.
 493  *
 494  * On PowerPC we implement it using the timebase register.
 495  */
 496 unsigned long post_time_ms(unsigned long base)
 497 {
 498 #if defined(CONFIG_PPC) || defined(CONFIG_ARM) && !defined(CONFIG_KIRKWOOD)
 499         return (unsigned long)lldiv(get_ticks(), get_tbclk() / CONFIG_SYS_HZ)
 500                 - base;
 501 #else
 502 #warning "Not implemented yet"
 503         return 0; /* Not implemented yet */
 504 #endif
 505 }