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 <post.h>
  28
  29 #ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
  30 #include <asm/gpio.h>
  31 #endif
  32
  33 #ifdef CONFIG_LOGBUFFER
  34 #include <logbuff.h>
  35 #endif
  36
  37 DECLARE_GLOBAL_DATA_PTR;
  38
  39 #define POST_MAX_NUMBER         32
  40
  41 #define BOOTMODE_MAGIC  0xDEAD0000
  42
  43 int post_init_f(void)
  44 {
  45         int res = 0;
  46         unsigned int i;
  47
  48         for (i = 0; i < post_list_size; i++) {
  49                 struct post_test *test = post_list + i;
  50
  51                 if (test->init_f && test->init_f()) {
  52                         res = -1;
  53                 }
  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
 209                 last = 0;
 210                 name = list;
 211                 while (!last) {
 212                         while (*name && *name == ' ')
 213                                 name++;
 214                         if (*name == 0)
 215                                 break;
 216                         s = name + 1;
 217                         while (*s && *s != ' ')
 218                                 s++;
 219                         if (*s == 0)
 220                                 last = 1;
 221                         else
 222                                 *s = 0;
 223
 224                         for (j = 0; j < post_list_size; j++) {
 225                                 if (strcmp (post_list[j].cmd, name) == 0) {
 226                                         test_flags[j] |= flag[i];
 227                                         break;
 228                                 }
 229                         }
 230
 231                         if (j == post_list_size)
 232                                 printf ("No such test: %s\n", name);
 233
 234                         name = s + 1;
 235                 }
 236         }
 237 }
 238 #endif
 239
 240 static void post_get_flags(int *test_flags)
 241 {
 242         int j;
 243
 244         for (j = 0; j < post_list_size; j++)
 245                 test_flags[j] = post_list[j].flags;
 246
 247 #ifndef CONFIG_POST_SKIP_ENV_FLAGS
 248         post_get_env_flags(test_flags);
 249 #endif
 250
 251         for (j = 0; j < post_list_size; j++)
 252                 if (test_flags[j] & POST_POWERON)
 253                         test_flags[j] |= POST_SLOWTEST;
 254 }
 255
 256 void __show_post_progress(unsigned int test_num, int before, int result)
 257 {
 258 }
 259 void show_post_progress(unsigned int, int, int)
 260                         __attribute__((weak, alias("__show_post_progress")));
 261
 262 static int post_run_single(struct post_test *test,
 263                                 int test_flags, int flags, unsigned int i)
 264 {
 265         if ((flags & test_flags & POST_ALWAYS) &&
 266                 (flags & test_flags & POST_MEM)) {
 267                 WATCHDOG_RESET ();
 268
 269                 if (!(flags & POST_REBOOT)) {
 270                         if ((test_flags & POST_REBOOT) &&
 271                                 !(flags & POST_MANUAL)) {
 272                                 post_bootmode_test_on(
 273                                         (gd->flags & GD_FLG_POSTFAIL) ?
 274                                                 POST_FAIL_SAVE | i : i);
 275                         }
 276
 277                         if (test_flags & POST_PREREL)
 278                                 post_log_mark_start(test->testid);
 279                         else
 280                                 post_log("POST %s ", test->cmd);
 281                 }
 282
 283                 show_post_progress(i, POST_BEFORE, POST_FAILED);
 284
 285                 if (test_flags & POST_PREREL) {
 286                         if ((*test->test) (flags) == 0) {
 287                                 post_log_mark_succ(test->testid);
 288                                 show_post_progress(i, POST_AFTER, POST_PASSED);
 289                         }
 290                         else {
 291                                 show_post_progress(i, POST_AFTER, POST_FAILED);
 292                                 if (test_flags & POST_CRITICAL)
 293                                         gd->flags |= GD_FLG_POSTFAIL;
 294                                 if (test_flags & POST_STOP)
 295                                         gd->flags |= GD_FLG_POSTSTOP;
 296                         }
 297                 } else {
 298                         if ((*test->test)(flags) != 0) {
 299                                 post_log("FAILED\n");
 300                                 show_boot_progress(-32);
 301                                 show_post_progress(i, POST_AFTER, POST_FAILED);
 302                                 if (test_flags & POST_CRITICAL)
 303                                         gd->flags |= GD_FLG_POSTFAIL;
 304                                 if (test_flags & POST_STOP)
 305                                         gd->flags |= GD_FLG_POSTSTOP;
 306                         } else {
 307                                 post_log("PASSED\n");
 308                                 show_post_progress(i, POST_AFTER, POST_PASSED);
 309                         }
 310                 }
 311
 312                 if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
 313                         post_bootmode_test_off();
 314                 }
 315
 316                 return 0;
 317         } else {
 318                 return -1;
 319         }
 320 }
 321
 322 int post_run (char *name, int flags)
 323 {
 324         unsigned int i;
 325         int test_flags[POST_MAX_NUMBER];
 326
 327         post_get_flags(test_flags);
 328
 329         if (name == NULL) {
 330                 unsigned int last;
 331
 332                 if (gd->flags & GD_FLG_POSTSTOP)
 333                         return 0;
 334
 335                 if (post_bootmode_get(&last) & POST_POWERTEST) {
 336                         if (last & POST_FAIL_SAVE) {
 337                                 last &= ~POST_FAIL_SAVE;
 338                                 gd->flags |= GD_FLG_POSTFAIL;
 339                         }
 340                         if (last < post_list_size &&
 341                                 (flags & test_flags[last] & POST_ALWAYS) &&
 342                                 (flags & test_flags[last] & POST_MEM)) {
 343
 344                                 post_run_single(post_list + last,
 345                                                  test_flags[last],
 346                                                  flags | POST_REBOOT, last);
 347
 348                                 for (i = last + 1; i < post_list_size; i++) {
 349                                         if (gd->flags & GD_FLG_POSTSTOP)
 350                                                 break;
 351                                         post_run_single(post_list + i,
 352                                                          test_flags[i],
 353                                                          flags, i);
 354                                 }
 355                         }
 356                 } else {
 357                         for (i = 0; i < post_list_size; i++) {
 358                                 if (gd->flags & GD_FLG_POSTSTOP)
 359                                         break;
 360                                 post_run_single(post_list + i,
 361                                                  test_flags[i],
 362                                                  flags, i);
 363                         }
 364                 }
 365
 366                 return 0;
 367         } else {
 368                 for (i = 0; i < post_list_size; i++) {
 369                         if (strcmp (post_list[i].cmd, name) == 0)
 370                                 break;
 371                 }
 372
 373                 if (i < post_list_size) {
 374                         WATCHDOG_RESET();
 375                         return post_run_single(post_list + i,
 376                                                 test_flags[i],
 377                                                 flags, i);
 378                 } else {
 379                         return -1;
 380                 }
 381         }
 382 }
 383
 384 static int post_info_single(struct post_test *test, int full)
 385 {
 386         if (test->flags & POST_MANUAL) {
 387                 if (full)
 388                         printf("%s - %s\n"
 389                                 "  %s\n", test->cmd, test->name, test->desc);
 390                 else
 391                         printf("  %-15s - %s\n", test->cmd, test->name);
 392
 393                 return 0;
 394         } else {
 395                 return -1;
 396         }
 397 }
 398
 399 int post_info (char *name)
 400 {
 401         unsigned int i;
 402
 403         if (name == NULL) {
 404                 for (i = 0; i < post_list_size; i++)
 405                         post_info_single(post_list + i, 0);
 406
 407                 return 0;
 408         } else {
 409                 for (i = 0; i < post_list_size; i++) {
 410                         if (strcmp (post_list[i].cmd, name) == 0)
 411                                 break;
 412                 }
 413
 414                 if (i < post_list_size) {
 415                         return post_info_single(post_list + i, 1);
 416                 } else {
 417                         return -1;
 418                 }
 419         }
 420 }
 421
 422 int post_log(char *format, ...)
 423 {
 424         va_list args;
 425         uint i;
 426         char printbuffer[CONFIG_SYS_PBSIZE];
 427
 428         va_start (args, format);
 429
 430         /* For this to work, printbuffer must be larger than
 431          * anything we ever want to print.
 432          */
 433         i = vsprintf (printbuffer, format, args);
 434         va_end (args);
 435
 436 #ifdef CONFIG_LOGBUFFER
 437         /* Send to the logbuffer */
 438         logbuff_log(printbuffer);
 439 #else
 440         /* Send to the stdout file */
 441         puts(printbuffer);
 442 #endif
 443
 444         return 0;
 445 }
 446
 447 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 448 void post_reloc(void)
 449 {
 450         unsigned int i;
 451
 452         /*
 453          * We have to relocate the test table manually
 454          */
 455         for (i = 0; i < post_list_size; i++) {
 456                 ulong addr;
 457                 struct post_test *test = post_list + i;
 458
 459                 if (test->name) {
 460                         addr = (ulong) (test->name) + gd->reloc_off;
 461                         test->name = (char *)addr;
 462                 }
 463
 464                 if (test->cmd) {
 465                         addr = (ulong) (test->cmd) + gd->reloc_off;
 466                         test->cmd = (char *)addr;
 467                 }
 468
 469                 if (test->desc) {
 470                         addr = (ulong) (test->desc) + gd->reloc_off;
 471                         test->desc = (char *)addr;
 472                 }
 473
 474                 if (test->test) {
 475                         addr = (ulong) (test->test) + gd->reloc_off;
 476                         test->test = (int (*)(int flags)) addr;
 477                 }
 478
 479                 if (test->init_f) {
 480                         addr = (ulong) (test->init_f) + gd->reloc_off;
 481                         test->init_f = (int (*)(void)) addr;
 482                 }
 483
 484                 if (test->reloc) {
 485                         addr = (ulong) (test->reloc) + gd->reloc_off;
 486                         test->reloc = (void (*)(void)) addr;
 487
 488                         test->reloc();
 489                 }
 490         }
 491 }
 492 #endif
 493
 494
 495 /*
 496  * Some tests (e.g. SYSMON) need the time when post_init_f started,
 497  * but we cannot use get_timer() at this point.
 498  *
 499  * On PowerPC we implement it using the timebase register.
 500  */
 501 unsigned long post_time_ms(unsigned long base)
 502 {
 503 #ifdef CONFIG_PPC
 504         return (unsigned long)(get_ticks() / (get_tbclk() / CONFIG_SYS_HZ))
 505                 - base;
 506 #else
 507 #warning "Not implemented yet"
 508         return 0; /* Not implemented yet */
 509 #endif
 510 }