post/post.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * (C) Copyright 2002
   4  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   5  */
   6
   7 #include <common.h>
   8 #include <env.h>
   9 #include <stdio_dev.h>
  10 #include <time.h>
  11 #include <watchdog.h>
  12 #include <div64.h>
  13 #include <post.h>
  14
  15 #ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
  16 #include <asm/gpio.h>
  17 #endif
  18
  19 DECLARE_GLOBAL_DATA_PTR;
  20
  21 #define POST_MAX_NUMBER         32
  22
  23 #define BOOTMODE_MAGIC  0xDEAD0000
  24
  25 int post_init_f(void)
  26 {
  27         int res = 0;
  28         unsigned int i;
  29
  30         for (i = 0; i < post_list_size; i++) {
  31                 struct post_test *test = post_list + i;
  32
  33                 if (test->init_f && test->init_f())
  34                         res = -1;
  35         }
  36
  37         gd->post_init_f_time = post_time_ms(0);
  38         if (!gd->post_init_f_time)
  39                 printf("%s: post_time_ms not implemented\n", __FILE__);
  40
  41         return res;
  42 }
  43
  44 /*
  45  * Supply a default implementation for post_hotkeys_pressed() for boards
  46  * without hotkey support. We always return 0 here, so that the
  47  * long-running tests won't be started.
  48  *
  49  * Boards with hotkey support can override this weak default function
  50  * by defining one in their board specific code.
  51  */
  52 __weak int post_hotkeys_pressed(void)
  53 {
  54 #ifdef CONFIG_SYS_POST_HOTKEYS_GPIO
  55         int ret;
  56         unsigned gpio = CONFIG_SYS_POST_HOTKEYS_GPIO;
  57
  58         ret = gpio_request(gpio, "hotkeys");
  59         if (ret) {
  60                 printf("POST: gpio hotkey request failed\n");
  61                 return 0;
  62         }
  63
  64         gpio_direction_input(gpio);
  65         ret = gpio_get_value(gpio);
  66         gpio_free(gpio);
  67
  68         return ret;
  69 #endif
  70
  71         return 0;       /* No hotkeys supported */
  72 }
  73
  74 void post_bootmode_init(void)
  75 {
  76         int bootmode = post_bootmode_get(0);
  77         int newword;
  78
  79         if (post_hotkeys_pressed() && !(bootmode & POST_POWERTEST))
  80                 newword = BOOTMODE_MAGIC | POST_SLOWTEST;
  81         else if (bootmode == 0)
  82                 newword = BOOTMODE_MAGIC | POST_POWERON;
  83         else if (bootmode == POST_POWERON || bootmode == POST_SLOWTEST)
  84                 newword = BOOTMODE_MAGIC | POST_NORMAL;
  85         else
  86                 /* Use old value */
  87                 newword = post_word_load() & ~POST_COLDBOOT;
  88
  89         if (bootmode == 0)
  90                 /* We are booting after power-on */
  91                 newword |= POST_COLDBOOT;
  92
  93         post_word_store(newword);
  94
  95         /* Reset activity record */
  96         gd->post_log_word = 0;
  97         gd->post_log_res = 0;
  98 }
  99
 100 int post_bootmode_get(unsigned int *last_test)
 101 {
 102         unsigned long word = post_word_load();
 103         int bootmode;
 104
 105         if ((word & 0xFFFF0000) != BOOTMODE_MAGIC)
 106                 return 0;
 107
 108         bootmode = word & 0x7F;
 109
 110         if (last_test && (bootmode & POST_POWERTEST))
 111                 *last_test = (word >> 8) & 0xFF;
 112
 113         return bootmode;
 114 }
 115
 116 /* POST tests run before relocation only mark status bits .... */
 117 static void post_log_mark_start(unsigned long testid)
 118 {
 119         gd->post_log_word |= testid;
 120 }
 121
 122 static void post_log_mark_succ(unsigned long testid)
 123 {
 124         gd->post_log_res |= testid;
 125 }
 126
 127 /* ... and the messages are output once we are relocated */
 128 void post_output_backlog(void)
 129 {
 130         int j;
 131
 132         for (j = 0; j < post_list_size; j++) {
 133                 if (gd->post_log_word & (post_list[j].testid)) {
 134                         post_log("POST %s ", post_list[j].cmd);
 135                         if (gd->post_log_res & post_list[j].testid)
 136                                 post_log("PASSED\n");
 137                         else {
 138                                 post_log("FAILED\n");
 139                                 bootstage_error(BOOTSTAGE_ID_POST_FAIL_R);
 140                         }
 141                 }
 142         }
 143 }
 144
 145 static void post_bootmode_test_on(unsigned int last_test)
 146 {
 147         unsigned long word = post_word_load();
 148
 149         word |= POST_POWERTEST;
 150
 151         word |= (last_test & 0xFF) << 8;
 152
 153         post_word_store(word);
 154 }
 155
 156 static void post_bootmode_test_off(void)
 157 {
 158         unsigned long word = post_word_load();
 159
 160         word &= ~POST_POWERTEST;
 161
 162         post_word_store(word);
 163 }
 164
 165 #ifndef CONFIG_POST_SKIP_ENV_FLAGS
 166 static void post_get_env_flags(int *test_flags)
 167 {
 168         int  flag[] = {  POST_POWERON,   POST_NORMAL,   POST_SLOWTEST,
 169                          POST_CRITICAL };
 170         char *var[] = { "post_poweron", "post_normal", "post_slowtest",
 171                         "post_critical" };
 172         int varnum = ARRAY_SIZE(var);
 173         char list[128];                 /* long enough for POST list */
 174         char *name;
 175         char *s;
 176         int last;
 177         int i, j;
 178
 179         for (i = 0; i < varnum; i++) {
 180                 if (env_get_f(var[i], list, sizeof(list)) <= 0)
 181                         continue;
 182
 183                 for (j = 0; j < post_list_size; j++)
 184                         test_flags[j] &= ~flag[i];
 185
 186                 last = 0;
 187                 name = list;
 188                 while (!last) {
 189                         while (*name && *name == ' ')
 190                                 name++;
 191                         if (*name == 0)
 192                                 break;
 193                         s = name + 1;
 194                         while (*s && *s != ' ')
 195                                 s++;
 196                         if (*s == 0)
 197                                 last = 1;
 198                         else
 199                                 *s = 0;
 200
 201                         for (j = 0; j < post_list_size; j++) {
 202                                 if (strcmp(post_list[j].cmd, name) == 0) {
 203                                         test_flags[j] |= flag[i];
 204                                         break;
 205                                 }
 206                         }
 207
 208                         if (j == post_list_size)
 209                                 printf("No such test: %s\n", name);
 210
 211                         name = s + 1;
 212                 }
 213         }
 214 }
 215 #endif
 216
 217 static void post_get_flags(int *test_flags)
 218 {
 219         int j;
 220
 221         for (j = 0; j < post_list_size; j++)
 222                 test_flags[j] = post_list[j].flags;
 223
 224 #ifndef CONFIG_POST_SKIP_ENV_FLAGS
 225         post_get_env_flags(test_flags);
 226 #endif
 227
 228         for (j = 0; j < post_list_size; j++)
 229                 if (test_flags[j] & POST_POWERON)
 230                         test_flags[j] |= POST_SLOWTEST;
 231 }
 232
 233 __weak void show_post_progress(unsigned int test_num, int before, int result)
 234 {
 235 }
 236
 237 static int post_run_single(struct post_test *test,
 238                                 int test_flags, int flags, unsigned int i)
 239 {
 240         if ((flags & test_flags & POST_ALWAYS) &&
 241                 (flags & test_flags & POST_MEM)) {
 242                 WATCHDOG_RESET();
 243
 244                 if (!(flags & POST_REBOOT)) {
 245                         if ((test_flags & POST_REBOOT) &&
 246                                 !(flags & POST_MANUAL)) {
 247                                 post_bootmode_test_on(
 248                                         (gd->flags & GD_FLG_POSTFAIL) ?
 249                                                 POST_FAIL_SAVE | i : i);
 250                         }
 251
 252                         if (test_flags & POST_PREREL)
 253                                 post_log_mark_start(test->testid);
 254                         else
 255                                 post_log("POST %s ", test->cmd);
 256                 }
 257
 258                 show_post_progress(i, POST_BEFORE, POST_FAILED);
 259
 260                 if (test_flags & POST_PREREL) {
 261                         if ((*test->test)(flags) == 0) {
 262                                 post_log_mark_succ(test->testid);
 263                                 show_post_progress(i, POST_AFTER, POST_PASSED);
 264                         } else {
 265                                 show_post_progress(i, POST_AFTER, POST_FAILED);
 266                                 if (test_flags & POST_CRITICAL)
 267                                         gd->flags |= GD_FLG_POSTFAIL;
 268                                 if (test_flags & POST_STOP)
 269                                         gd->flags |= GD_FLG_POSTSTOP;
 270                         }
 271                 } else {
 272                         if ((*test->test)(flags) != 0) {
 273                                 post_log("FAILED\n");
 274                                 bootstage_error(BOOTSTAGE_ID_POST_FAIL_R);
 275                                 show_post_progress(i, POST_AFTER, POST_FAILED);
 276                                 if (test_flags & POST_CRITICAL)
 277                                         gd->flags |= GD_FLG_POSTFAIL;
 278                                 if (test_flags & POST_STOP)
 279                                         gd->flags |= GD_FLG_POSTSTOP;
 280                         } else {
 281                                 post_log("PASSED\n");
 282                                 show_post_progress(i, POST_AFTER, POST_PASSED);
 283                         }
 284                 }
 285
 286                 if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL))
 287                         post_bootmode_test_off();
 288
 289                 return 0;
 290         } else {
 291                 return -1;
 292         }
 293 }
 294
 295 int post_run(char *name, int flags)
 296 {
 297         unsigned int i;
 298         int test_flags[POST_MAX_NUMBER];
 299
 300         post_get_flags(test_flags);
 301
 302         if (name == NULL) {
 303                 unsigned int last;
 304
 305                 if (gd->flags & GD_FLG_POSTSTOP)
 306                         return 0;
 307
 308                 if (post_bootmode_get(&last) & POST_POWERTEST) {
 309                         if (last & POST_FAIL_SAVE) {
 310                                 last &= ~POST_FAIL_SAVE;
 311                                 gd->flags |= GD_FLG_POSTFAIL;
 312                         }
 313                         if (last < post_list_size &&
 314                                 (flags & test_flags[last] & POST_ALWAYS) &&
 315                                 (flags & test_flags[last] & POST_MEM)) {
 316
 317                                 post_run_single(post_list + last,
 318                                                  test_flags[last],
 319                                                  flags | POST_REBOOT, last);
 320
 321                                 for (i = last + 1; i < post_list_size; i++) {
 322                                         if (gd->flags & GD_FLG_POSTSTOP)
 323                                                 break;
 324                                         post_run_single(post_list + i,
 325                                                          test_flags[i],
 326                                                          flags, i);
 327                                 }
 328                         }
 329                 } else {
 330                         for (i = 0; i < post_list_size; i++) {
 331                                 if (gd->flags & GD_FLG_POSTSTOP)
 332                                         break;
 333                                 post_run_single(post_list + i,
 334                                                  test_flags[i],
 335                                                  flags, i);
 336                         }
 337                 }
 338
 339                 return 0;
 340         } else {
 341                 for (i = 0; i < post_list_size; i++) {
 342                         if (strcmp(post_list[i].cmd, name) == 0)
 343                                 break;
 344                 }
 345
 346                 if (i < post_list_size) {
 347                         WATCHDOG_RESET();
 348                         return post_run_single(post_list + i,
 349                                                 test_flags[i],
 350                                                 flags, i);
 351                 } else {
 352                         return -1;
 353                 }
 354         }
 355 }
 356
 357 static int post_info_single(struct post_test *test, int full)
 358 {
 359         if (test->flags & POST_MANUAL) {
 360                 if (full)
 361                         printf("%s - %s\n"
 362                                 "  %s\n", test->cmd, test->name, test->desc);
 363                 else
 364                         printf("  %-15s - %s\n", test->cmd, test->name);
 365
 366                 return 0;
 367         } else {
 368                 return -1;
 369         }
 370 }
 371
 372 int post_info(char *name)
 373 {
 374         unsigned int i;
 375
 376         if (name == NULL) {
 377                 for (i = 0; i < post_list_size; i++)
 378                         post_info_single(post_list + i, 0);
 379
 380                 return 0;
 381         } else {
 382                 for (i = 0; i < post_list_size; i++) {
 383                         if (strcmp(post_list[i].cmd, name) == 0)
 384                                 break;
 385                 }
 386
 387                 if (i < post_list_size)
 388                         return post_info_single(post_list + i, 1);
 389                 else
 390                         return -1;
 391         }
 392 }
 393
 394 int post_log(char *format, ...)
 395 {
 396         va_list args;
 397         char printbuffer[CONFIG_SYS_PBSIZE];
 398
 399         va_start(args, format);
 400
 401         /* For this to work, printbuffer must be larger than
 402          * anything we ever want to print.
 403          */
 404         vsprintf(printbuffer, format, args);
 405         va_end(args);
 406
 407         /* Send to the stdout file */
 408         puts(printbuffer);
 409
 410         return 0;
 411 }
 412
 413 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 414 void post_reloc(void)
 415 {
 416         unsigned int i;
 417
 418         /*
 419          * We have to relocate the test table manually
 420          */
 421         for (i = 0; i < post_list_size; i++) {
 422                 ulong addr;
 423                 struct post_test *test = post_list + i;
 424
 425                 if (test->name) {
 426                         addr = (ulong)(test->name) + gd->reloc_off;
 427                         test->name = (char *)addr;
 428                 }
 429
 430                 if (test->cmd) {
 431                         addr = (ulong)(test->cmd) + gd->reloc_off;
 432                         test->cmd = (char *)addr;
 433                 }
 434
 435                 if (test->desc) {
 436                         addr = (ulong)(test->desc) + gd->reloc_off;
 437                         test->desc = (char *)addr;
 438                 }
 439
 440                 if (test->test) {
 441                         addr = (ulong)(test->test) + gd->reloc_off;
 442                         test->test = (int (*)(int flags)) addr;
 443                 }
 444
 445                 if (test->init_f) {
 446                         addr = (ulong)(test->init_f) + gd->reloc_off;
 447                         test->init_f = (int (*)(void)) addr;
 448                 }
 449
 450                 if (test->reloc) {
 451                         addr = (ulong)(test->reloc) + gd->reloc_off;
 452                         test->reloc = (void (*)(void)) addr;
 453
 454                         test->reloc();
 455                 }
 456         }
 457 }
 458 #endif
 459
 460
 461 /*
 462  * Some tests (e.g. SYSMON) need the time when post_init_f started,
 463  * but we cannot use get_timer() at this point.
 464  *
 465  * On PowerPC we implement it using the timebase register.
 466  */
 467 unsigned long post_time_ms(unsigned long base)
 468 {
 469 #if defined(CONFIG_PPC) || defined(CONFIG_ARM)
 470         return (unsigned long)lldiv(get_ticks(), get_tbclk() / CONFIG_SYS_HZ)
 471                 - base;
 472 #else
 473 #warning "Not implemented yet"
 474         return 0; /* Not implemented yet */
 475 #endif
 476 }