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 <console.h>
  26 #include <watchdog.h>
  27 #include <post.h>
  28
  29 #ifdef CONFIG_LOGBUFFER
  30 #include <logbuff.h>
  31 #endif
  32
  33 #ifdef CONFIG_POST
  34
  35 #define POST_MAX_NUMBER         32
  36
  37 #define BOOTMODE_MAGIC  0xDEAD0000
  38
  39 int post_init_f (void)
  40 {
  41         DECLARE_GLOBAL_DATA_PTR;
  42
  43         int res = 0;
  44         unsigned int i;
  45
  46         for (i = 0; i < post_list_size; i++) {
  47                 struct post_test *test = post_list + i;
  48
  49                 if (test->init_f && test->init_f()) {
  50                         res = -1;
  51                 }
  52         }
  53
  54         gd->post_init_f_time = post_time_ms(0);
  55         if (!gd->post_init_f_time)
  56         {
  57                 printf("post/post.c: post_time_ms seems not to be implemented\n");
  58         }
  59
  60         return res;
  61 }
  62
  63 void post_bootmode_init (void)
  64 {
  65         DECLARE_GLOBAL_DATA_PTR;
  66         int bootmode = post_bootmode_get (0);
  67
  68         if (bootmode == 0) {
  69                 bootmode = POST_POWERON;
  70         } else if (bootmode == POST_POWERON) {
  71                 bootmode = POST_NORMAL;
  72         } else {
  73                 return;
  74         }
  75
  76         post_word_store (BOOTMODE_MAGIC | bootmode);
  77         /* Reset activity record */
  78         gd->post_log_word = 0;
  79 }
  80
  81 int post_bootmode_get (unsigned int *last_test)
  82 {
  83         unsigned long word = post_word_load ();
  84         int bootmode;
  85
  86         if ((word & 0xFFFF0000) != BOOTMODE_MAGIC) {
  87                 return 0;
  88         }
  89
  90         bootmode = word & 0xFF;
  91
  92         if (last_test && (bootmode & POST_POWERTEST)) {
  93                 *last_test = (word >> 8) & 0xFF;
  94         }
  95
  96         return bootmode;
  97 }
  98
  99 void post_bootmode_clear (void)
 100 {
 101         post_word_store (0);
 102 }
 103
 104 /* POST tests run before relocation only mark status bits .... */
 105 static void post_log_mark_start ( unsigned long testid )
 106 {
 107         DECLARE_GLOBAL_DATA_PTR;
 108         gd->post_log_word |= (testid)<<16;
 109 }
 110
 111 static void post_log_mark_succ ( unsigned long testid )
 112 {
 113         DECLARE_GLOBAL_DATA_PTR;
 114         gd->post_log_word |= testid;
 115 }
 116
 117 /* ... and the messages are output once we are relocated */
 118 void post_output_backlog ( void )
 119 {
 120         DECLARE_GLOBAL_DATA_PTR;
 121         int j;
 122
 123         for (j = 0; j < post_list_size; j++) {
 124                 if (gd->post_log_word & (post_list[j].testid<<16)) {
 125                         post_log ("POST %s ", post_list[j].cmd);
 126                         if (gd->post_log_word & post_list[j].testid)
 127                                 post_log ("PASSED\n");
 128                         else
 129                                 post_log ("FAILED\n");
 130                 }
 131         }
 132 }
 133
 134 static void post_bootmode_test_on (unsigned int last_test)
 135 {
 136         unsigned long word = post_word_load ();
 137
 138         word |= POST_POWERTEST;
 139
 140         word |= (last_test & 0xFF) << 8;
 141
 142         post_word_store (word);
 143 }
 144
 145 static void post_bootmode_test_off (void)
 146 {
 147         unsigned long word = post_word_load ();
 148
 149         word &= ~POST_POWERTEST;
 150
 151         post_word_store (word);
 152 }
 153
 154 static void post_get_flags (int *test_flags)
 155 {
 156         int  flag[] = {  POST_POWERON,   POST_NORMAL,   POST_SLOWTEST };
 157         char *var[] = { "post_poweron", "post_normal", "post_slowtest" };
 158         int varnum = sizeof (var) / sizeof (var[0]);
 159         char list[128];                 /* long enough for POST list */
 160         char *name;
 161         char *s;
 162         int last;
 163         int i, j;
 164
 165         for (j = 0; j < post_list_size; j++) {
 166                 test_flags[j] = post_list[j].flags;
 167         }
 168
 169         for (i = 0; i < varnum; i++) {
 170                 if (getenv_r (var[i], list, sizeof (list)) <= 0)
 171                         continue;
 172
 173                 for (j = 0; j < post_list_size; j++) {
 174                         test_flags[j] &= ~flag[i];
 175                 }
 176
 177                 last = 0;
 178                 name = list;
 179                 while (!last) {
 180                         while (*name && *name == ' ')
 181                                 name++;
 182                         if (*name == 0)
 183                                 break;
 184                         s = name + 1;
 185                         while (*s && *s != ' ')
 186                                 s++;
 187                         if (*s == 0)
 188                                 last = 1;
 189                         else
 190                                 *s = 0;
 191
 192                         for (j = 0; j < post_list_size; j++) {
 193                                 if (strcmp (post_list[j].cmd, name) == 0) {
 194                                         test_flags[j] |= flag[i];
 195                                         break;
 196                                 }
 197                         }
 198
 199                         if (j == post_list_size) {
 200                                 printf ("No such test: %s\n", name);
 201                         }
 202
 203                         name = s + 1;
 204                 }
 205         }
 206 }
 207
 208 static int post_run_single (struct post_test *test,
 209                                 int test_flags, int flags, unsigned int i)
 210 {
 211         if ((flags & test_flags & POST_ALWAYS) &&
 212                 (flags & test_flags & POST_MEM)) {
 213                 WATCHDOG_RESET ();
 214
 215                 if (!(flags & POST_REBOOT)) {
 216                         if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
 217                                 post_bootmode_test_on (i);
 218                         }
 219
 220                         if (test_flags & POST_PREREL)
 221                                 post_log_mark_start ( test->testid );
 222                         else
 223                         post_log ("POST %s ", test->cmd);
 224                 }
 225
 226                 if (test_flags & POST_PREREL) {
 227                         if ((*test->test) (flags) == 0)
 228                                 post_log_mark_succ ( test->testid );
 229                 } else {
 230                 if ((*test->test) (flags) != 0)
 231                         post_log ("FAILED\n");
 232                 else
 233                         post_log ("PASSED\n");
 234                 }
 235
 236                 if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
 237                         post_bootmode_test_off ();
 238                 }
 239
 240                 return 0;
 241         } else {
 242                 return -1;
 243         }
 244 }
 245
 246 int post_run (char *name, int flags)
 247 {
 248         unsigned int i;
 249         int test_flags[POST_MAX_NUMBER];
 250
 251         post_get_flags (test_flags);
 252
 253         if (name == NULL) {
 254                 unsigned int last;
 255
 256                 if (post_bootmode_get (&last) & POST_POWERTEST) {
 257                         if (last < post_list_size &&
 258                                 (flags & test_flags[last] & POST_ALWAYS) &&
 259                                 (flags & test_flags[last] & POST_MEM)) {
 260
 261                                 post_run_single (post_list + last,
 262                                                  test_flags[last],
 263                                                  flags | POST_REBOOT, last);
 264
 265                                 for (i = last + 1; i < post_list_size; i++) {
 266                                         post_run_single (post_list + i,
 267                                                          test_flags[i],
 268                                                          flags, i);
 269                                 }
 270                         }
 271                 } else {
 272                         for (i = 0; i < post_list_size; i++) {
 273                                 post_run_single (post_list + i,
 274                                                  test_flags[i],
 275                                                  flags, i);
 276                         }
 277                 }
 278
 279                 return 0;
 280         } else {
 281                 for (i = 0; i < post_list_size; i++) {
 282                         if (strcmp (post_list[i].cmd, name) == 0)
 283                                 break;
 284                 }
 285
 286                 if (i < post_list_size) {
 287                         return post_run_single (post_list + i,
 288                                                 test_flags[i],
 289                                                 flags, i);
 290                 } else {
 291                         return -1;
 292                 }
 293         }
 294 }
 295
 296 static int post_info_single (struct post_test *test, int full)
 297 {
 298         if (test->flags & POST_MANUAL) {
 299                 if (full)
 300                         printf ("%s - %s\n"
 301                                 "  %s\n", test->cmd, test->name, test->desc);
 302                 else
 303                         printf ("  %-15s - %s\n", test->cmd, test->name);
 304
 305                 return 0;
 306         } else {
 307                 return -1;
 308         }
 309 }
 310
 311 int post_info (char *name)
 312 {
 313         unsigned int i;
 314
 315         if (name == NULL) {
 316                 for (i = 0; i < post_list_size; i++) {
 317                         post_info_single (post_list + i, 0);
 318                 }
 319
 320                 return 0;
 321         } else {
 322                 for (i = 0; i < post_list_size; i++) {
 323                         if (strcmp (post_list[i].cmd, name) == 0)
 324                                 break;
 325                 }
 326
 327                 if (i < post_list_size) {
 328                         return post_info_single (post_list + i, 1);
 329                 } else {
 330                         return -1;
 331                 }
 332         }
 333 }
 334
 335 int post_log (char *format, ...)
 336 {
 337         va_list args;
 338         uint i;
 339         char printbuffer[CFG_PBSIZE];
 340
 341         va_start (args, format);
 342
 343         /* For this to work, printbuffer must be larger than
 344          * anything we ever want to print.
 345          */
 346         i = vsprintf (printbuffer, format, args);
 347         va_end (args);
 348
 349 #ifdef CONFIG_LOGBUFFER
 350         /* Send to the logbuffer */
 351         logbuff_log (printbuffer);
 352 #else
 353         /* Send to the stdout file */
 354         puts (printbuffer);
 355 #endif
 356
 357         return 0;
 358 }
 359
 360 void post_reloc (void)
 361 {
 362         DECLARE_GLOBAL_DATA_PTR;
 363
 364         unsigned int i;
 365
 366         /*
 367          * We have to relocate the test table manually
 368          */
 369         for (i = 0; i < post_list_size; i++) {
 370                 ulong addr;
 371                 struct post_test *test = post_list + i;
 372
 373                 if (test->name) {
 374                         addr = (ulong) (test->name) + gd->reloc_off;
 375                         test->name = (char *) addr;
 376                 }
 377
 378                 if (test->cmd) {
 379                         addr = (ulong) (test->cmd) + gd->reloc_off;
 380                         test->cmd = (char *) addr;
 381                 }
 382
 383                 if (test->desc) {
 384                         addr = (ulong) (test->desc) + gd->reloc_off;
 385                         test->desc = (char *) addr;
 386                 }
 387
 388                 if (test->test) {
 389                         addr = (ulong) (test->test) + gd->reloc_off;
 390                         test->test = (int (*)(int flags)) addr;
 391                 }
 392
 393                 if (test->init_f) {
 394                         addr = (ulong) (test->init_f) + gd->reloc_off;
 395                         test->init_f = (int (*)(void)) addr;
 396                 }
 397
 398                 if (test->reloc) {
 399                         addr = (ulong) (test->reloc) + gd->reloc_off;
 400                         test->reloc = (void (*)(void)) addr;
 401
 402                         test->reloc();
 403                 }
 404         }
 405 }
 406
 407
 408 /*
 409  * Some tests (e.g. SYSMON) need the time when post_init_f started,
 410  * but we cannot use get_timer() at this point.
 411  *
 412  * On PowerPC we implement it using the timebase register.
 413  */
 414 unsigned long post_time_ms (unsigned long base)
 415 {
 416 #ifdef CONFIG_PPC
 417         return (unsigned long)get_ticks () / (get_tbclk () / CFG_HZ) - base;
 418 #else
 419         return 0; /* Not implemented yet */
 420 #endif
 421 }
 422
 423 #endif /* CONFIG_POST */