arch/blackfin/lib/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_LOGBUFFER
  30 #include <logbuff.h>
  31 #endif
  32
  33 DECLARE_GLOBAL_DATA_PTR;
  34
  35 #define POST_MAX_NUMBER         32
  36
  37 #define BOOTMODE_MAGIC  0xDEAD0000
  38
  39 int post_init_f(void)
  40 {
  41         int res = 0;
  42         unsigned int i;
  43
  44         for (i = 0; i < post_list_size; i++) {
  45                 struct post_test *test = post_list + i;
  46
  47                 if (test->init_f && test->init_f()) {
  48                         res = -1;
  49                 }
  50         }
  51
  52         gd->post_init_f_time = post_time_ms(0);
  53         if (!gd->post_init_f_time) {
  54                 printf
  55                     ("post/post.c: post_time_ms seems not to be implemented\n");
  56         }
  57
  58         return res;
  59 }
  60
  61 void post_bootmode_init(void)
  62 {
  63         int bootmode = post_bootmode_get(0);
  64         int newword;
  65
  66         if (post_hotkeys_pressed() && !(bootmode & POST_POWERTEST)) {
  67                 newword = BOOTMODE_MAGIC | POST_SLOWTEST;
  68         } else if (bootmode == 0) {
  69                 newword = BOOTMODE_MAGIC | POST_POWERON;
  70         } else if (bootmode == POST_POWERON || bootmode == POST_SLOWTEST) {
  71                 newword = BOOTMODE_MAGIC | POST_NORMAL;
  72         } else {
  73                 /* Use old value */
  74                 newword = post_word_load() & ~POST_COLDBOOT;
  75         }
  76
  77         if (bootmode == 0) {
  78                 /* We are booting after power-on */
  79                 newword |= POST_COLDBOOT;
  80         }
  81
  82         post_word_store(newword);
  83
  84         /* Reset activity record */
  85         gd->post_log_word = 0;
  86 }
  87
  88 int post_bootmode_get(unsigned int *last_test)
  89 {
  90         unsigned long word = post_word_load();
  91         int bootmode;
  92
  93         if ((word & 0xFFFF0000) != BOOTMODE_MAGIC) {
  94                 return 0;
  95         }
  96
  97         bootmode = word & 0x7F;
  98
  99         if (last_test && (bootmode & POST_POWERTEST)) {
 100                 *last_test = (word >> 8) & 0xFF;
 101         }
 102
 103         return bootmode;
 104 }
 105
 106 /* POST tests run before relocation only mark status bits .... */
 107 static void post_log_mark_start(unsigned long testid)
 108 {
 109         gd->post_log_word |= (testid) << 16;
 110 }
 111
 112 static void post_log_mark_succ(unsigned long testid)
 113 {
 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         int j;
 121
 122         for (j = 0; j < post_list_size; j++) {
 123                 if (gd->post_log_word & (post_list[j].testid << 16)) {
 124                         post_log("POST %s ", post_list[j].cmd);
 125                         if (gd->post_log_word & post_list[j].testid)
 126                                 post_log("PASSED\n");
 127                         else {
 128                                 post_log("FAILED\n");
 129                                 show_boot_progress (-31);
 130                         }
 131                 }
 132         }
 133 }
 134
 135 static void post_bootmode_test_on(unsigned int last_test)
 136 {
 137         unsigned long word = post_word_load();
 138
 139         word |= POST_POWERTEST;
 140
 141         word |= (last_test & 0xFF) << 8;
 142
 143         post_word_store(word);
 144 }
 145
 146 static void post_bootmode_test_off(void)
 147 {
 148         unsigned long word = post_word_load();
 149
 150         word &= ~POST_POWERTEST;
 151
 152         post_word_store(word);
 153 }
 154
 155 static void post_get_flags(int *test_flags)
 156 {
 157         int flag[] = { POST_POWERON, POST_NORMAL, POST_SLOWTEST };
 158         char *var[] = { "post_poweron", "post_normal", "post_slowtest" };
 159         int varnum = sizeof(var) / sizeof(var[0]);
 160         char list[128];         /* long enough for POST list */
 161         char *name;
 162         char *s;
 163         int last;
 164         int i, j;
 165
 166         for (j = 0; j < post_list_size; j++) {
 167                 test_flags[j] = post_list[j].flags;
 168         }
 169
 170         for (i = 0; i < varnum; i++) {
 171                 if (getenv_r(var[i], list, sizeof(list)) <= 0)
 172                         continue;
 173
 174                 for (j = 0; j < post_list_size; j++) {
 175                         test_flags[j] &= ~flag[i];
 176                 }
 177
 178                 last = 0;
 179                 name = list;
 180                 while (!last) {
 181                         while (*name && *name == ' ')
 182                                 name++;
 183                         if (*name == 0)
 184                                 break;
 185                         s = name + 1;
 186                         while (*s && *s != ' ')
 187                                 s++;
 188                         if (*s == 0)
 189                                 last = 1;
 190                         else
 191                                 *s = 0;
 192
 193                         for (j = 0; j < post_list_size; j++) {
 194                                 if (strcmp(post_list[j].cmd, name) == 0) {
 195                                         test_flags[j] |= flag[i];
 196                                         break;
 197                                 }
 198                         }
 199
 200                         if (j == post_list_size) {
 201                                 printf("No such test: %s\n", name);
 202                         }
 203
 204                         name = s + 1;
 205                 }
 206         }
 207
 208         for (j = 0; j < post_list_size; j++) {
 209                 if (test_flags[j] & POST_POWERON) {
 210                         test_flags[j] |= POST_SLOWTEST;
 211                 }
 212         }
 213 }
 214
 215 static int post_run_single(struct post_test *test,
 216                            int test_flags, int flags, unsigned int i)
 217 {
 218         if ((flags & test_flags & POST_ALWAYS) &&
 219             (flags & test_flags & POST_MEM)) {
 220                 WATCHDOG_RESET();
 221
 222                 if (!(flags & POST_REBOOT)) {
 223                         if ((test_flags & POST_REBOOT)
 224                             && !(flags & POST_MANUAL)) {
 225                                 post_bootmode_test_on(i);
 226                         }
 227
 228                         if (test_flags & POST_PREREL)
 229                                 post_log_mark_start(test->testid);
 230                         else
 231                                 post_log("POST %s ", test->cmd);
 232                 }
 233
 234                 if (test_flags & POST_PREREL) {
 235                         if ((*test->test) (flags) == 0)
 236                                 post_log_mark_succ(test->testid);
 237                 } else {
 238                         if ((*test->test) (flags) != 0) {
 239                                 post_log("FAILED\n");
 240                                 show_boot_progress (-32);
 241                         } else
 242                                 post_log("PASSED\n");
 243                 }
 244
 245                 if ((test_flags & POST_REBOOT) && !(flags & POST_MANUAL)) {
 246                         post_bootmode_test_off();
 247                 }
 248
 249                 return 0;
 250         } else {
 251                 return -1;
 252         }
 253 }
 254
 255 int post_run(char *name, int flags)
 256 {
 257         unsigned int i;
 258         int test_flags[POST_MAX_NUMBER];
 259
 260         post_get_flags(test_flags);
 261
 262         if (name == NULL) {
 263                 unsigned int last;
 264
 265                 if (post_bootmode_get(&last) & POST_POWERTEST) {
 266                         if (last < post_list_size &&
 267                             (flags & test_flags[last] & POST_ALWAYS) &&
 268                             (flags & test_flags[last] & POST_MEM)) {
 269
 270                                 post_run_single(post_list + last,
 271                                                 test_flags[last],
 272                                                 flags | POST_REBOOT, last);
 273
 274                                 for (i = last + 1; i < post_list_size; i++) {
 275                                         post_run_single(post_list + i,
 276                                                         test_flags[i],
 277                                                         flags, i);
 278                                 }
 279                         }
 280                 } else {
 281                         for (i = 0; i < post_list_size; i++) {
 282                                 post_run_single(post_list + i,
 283                                                 test_flags[i], flags, i);
 284                         }
 285                 }
 286
 287                 return 0;
 288         } else {
 289                 for (i = 0; i < post_list_size; i++) {
 290                         if (strcmp(post_list[i].cmd, name) == 0)
 291                                 break;
 292                 }
 293
 294                 if (i < post_list_size) {
 295                         return post_run_single(post_list + i,
 296                                                test_flags[i], flags, i);
 297                 } else {
 298                         return -1;
 299                 }
 300         }
 301 }
 302
 303 static int post_info_single(struct post_test *test, int full)
 304 {
 305         if (test->flags & POST_MANUAL) {
 306                 if (full)
 307                         printf("%s - %s\n"
 308                                "  %s\n", test->cmd, test->name, test->desc);
 309                 else
 310                         printf("  %-15s - %s\n", test->cmd, test->name);
 311
 312                 return 0;
 313         } else {
 314                 return -1;
 315         }
 316 }
 317
 318 int post_info(char *name)
 319 {
 320         unsigned int i;
 321
 322         if (name == NULL) {
 323                 for (i = 0; i < post_list_size; i++) {
 324                         post_info_single(post_list + i, 0);
 325                 }
 326
 327                 return 0;
 328         } else {
 329                 for (i = 0; i < post_list_size; i++) {
 330                         if (strcmp(post_list[i].cmd, name) == 0)
 331                                 break;
 332                 }
 333
 334                 if (i < post_list_size) {
 335                         return post_info_single(post_list + i, 1);
 336                 } else {
 337                         return -1;
 338                 }
 339         }
 340 }
 341
 342 int post_log(char *format, ...)
 343 {
 344         va_list args;
 345         uint i;
 346         char printbuffer[CONFIG_SYS_PBSIZE];
 347
 348         va_start(args, format);
 349
 350         /* For this to work, printbuffer must be larger than
 351          * anything we ever want to print.
 352          */
 353         i = vsprintf(printbuffer, format, args);
 354         va_end(args);
 355
 356 #ifdef CONFIG_LOGBUFFER
 357         /* Send to the logbuffer */
 358         logbuff_log(printbuffer);
 359 #else
 360         /* Send to the stdout file */
 361         puts(printbuffer);
 362 #endif
 363
 364         return 0;
 365 }
 366
 367 void post_reloc(void)
 368 {
 369         unsigned int i;
 370
 371         /*
 372          * We have to relocate the test table manually
 373          */
 374         for (i = 0; i < post_list_size; i++) {
 375                 ulong addr;
 376                 struct post_test *test = post_list + i;
 377
 378                 if (test->name) {
 379                         addr = (ulong) (test->name) + gd->reloc_off;
 380                         test->name = (char *)addr;
 381                 }
 382
 383                 if (test->cmd) {
 384                         addr = (ulong) (test->cmd) + gd->reloc_off;
 385                         test->cmd = (char *)addr;
 386                 }
 387
 388                 if (test->desc) {
 389                         addr = (ulong) (test->desc) + gd->reloc_off;
 390                         test->desc = (char *)addr;
 391                 }
 392
 393                 if (test->test) {
 394                         addr = (ulong) (test->test) + gd->reloc_off;
 395                         test->test = (int (*)(int flags))addr;
 396                 }
 397
 398                 if (test->init_f) {
 399                         addr = (ulong) (test->init_f) + gd->reloc_off;
 400                         test->init_f = (int (*)(void))addr;
 401                 }
 402
 403                 if (test->reloc) {
 404                         addr = (ulong) (test->reloc) + gd->reloc_off;
 405                         test->reloc = (void (*)(void))addr;
 406
 407                         test->reloc();
 408                 }
 409         }
 410 }
 411
 412 /*
 413  * Some tests (e.g. SYSMON) need the time when post_init_f started,
 414  * but we cannot use get_timer() at this point.
 415  *
 416  * On PowerPC we implement it using the timebase register.
 417  */
 418 unsigned long post_time_ms(unsigned long base)
 419 {
 420         return (unsigned long)get_ticks() / (get_tbclk() / CONFIG_SYS_HZ) - base;
 421 }