board/mpl/common/memtst.c

   1 /*
   2  * (C) Copyright 2001
   3  * Denis Peter, MPL AG Switzerland, d.peter@mpl.ch
   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
  25 /* NOT Used yet...
  26   add following code to PIP405.c :
  27 int testdram (void)
  28 {
  29         unsigned char s[32];
  30         int i;
  31
  32         i = getenv_r ("testmem", s, 32);
  33         if (i != 0) {
  34                 i = (int) simple_strtoul (s, NULL, 10);
  35                 if ((i > 0) && (i < 0xf)) {
  36                         printf ("testing ");
  37                         i = mem_test (0, ramsize, i);
  38                         if (i > 0)
  39                                 printf ("ERROR ");
  40                         else
  41                                 printf ("Ok ");
  42                 }
  43         }
  44         return (1);
  45 }
  46 */
  47
  48
  49 #include <common.h>
  50 #include <asm/processor.h>
  51 #include <405gp_i2c.h>
  52
  53 #define FALSE           0
  54 #define TRUE            1
  55
  56 #define TEST_QUIET                      8
  57 #define TEST_SHOW_PROG  4
  58 #define TEST_SHOW_ERR   2
  59 #define TEST_SHOW_ALL           1
  60
  61 #define TESTPAT1 0xAA55AA55
  62 #define TESTPAT2 0x55AA55AA
  63 #define TEST_PASSED 0
  64 #define TEST_FAILED 1
  65 #define MEGABYTE (1024*1024)
  66
  67
  68 typedef struct {
  69         volatile unsigned long pat1;
  70         volatile unsigned long pat2;
  71 } RAM_MEMTEST_PATTERN2;
  72
  73 typedef struct {
  74         volatile unsigned long addr;
  75 } RAM_MEMTEST_ADDRLINE;
  76
  77 static __inline unsigned long Swap_32 (unsigned long val)
  78 {
  79         return (((val << 16) & 0xFFFF0000) | ((val >> 16) & 0x0000FFFF));
  80 }
  81
  82 void testm_puts (int quiet, char *buf)
  83 {
  84         if ((quiet & TEST_SHOW_ALL) == TEST_SHOW_ALL)
  85                 puts (buf);
  86 }
  87
  88
  89 void Write_Error (int mode, unsigned long addr, unsigned long expected,
  90                                   unsigned long actual)
  91 {
  92
  93         char dispbuf[64];
  94
  95         sprintf (dispbuf, "\n ERROR @ 0x%08lX: (exp: 0x%08lX act: 0x%08lX) ",
  96                          addr, expected, actual);
  97         testm_puts (((mode & TEST_SHOW_ERR) ==
  98                                  TEST_SHOW_ERR) ? TEST_SHOW_ALL : mode, dispbuf);
  99 }
 100
 101
 102 /*
 103  * fills the memblock of <size> bytes from <startaddr> with pat1 and pat2
 104  */
 105
 106
 107 void RAM_MemTest_WritePattern2 (unsigned long startaddr,
 108                                                                 unsigned long size, unsigned long pat1,
 109                                                                 unsigned long pat2)
 110 {
 111         RAM_MEMTEST_PATTERN2 *p, *pe;
 112
 113         p = (RAM_MEMTEST_PATTERN2 *) startaddr;
 114         pe = (RAM_MEMTEST_PATTERN2 *) (startaddr + size);
 115
 116         while (p < pe) {
 117                 p->pat1 = pat1;
 118                 p->pat2 = pat2;
 119                 p++;
 120         }                                                       /* endwhile */
 121 }
 122
 123 /*
 124  * checks the memblock of <size> bytes from <startaddr> with pat1 and pat2
 125  * returns the address of the first error or NULL if all is well
 126  */
 127
 128 void *RAM_MemTest_CheckPattern2 (int mode, unsigned long startaddr,
 129                                                                  unsigned long size, unsigned long pat1,
 130                                                                  unsigned long pat2)
 131 {
 132         RAM_MEMTEST_PATTERN2 *p, *pe;
 133         unsigned long actual1, actual2;
 134
 135         p = (RAM_MEMTEST_PATTERN2 *) startaddr;
 136         pe = (RAM_MEMTEST_PATTERN2 *) (startaddr + size);
 137
 138         while (p < pe) {
 139                 actual1 = p->pat1;
 140                 actual2 = p->pat2;
 141
 142                 if (actual1 != pat1) {
 143                         Write_Error (mode, (unsigned long) &(p->pat1), pat1, actual1);
 144                         return ((void *) &(p->pat1));
 145                 }
 146                 /* endif */
 147                 if (actual2 != pat2) {
 148                         Write_Error (mode, (unsigned long) &(p->pat2), pat2, actual2);
 149                         return ((void *) &(p->pat2));
 150                 }
 151                 /* endif */
 152                 p++;
 153         }                                                       /* endwhile */
 154
 155         return (NULL);
 156 }
 157
 158 /*
 159  * fills the memblock of <size> bytes from <startaddr> with the address
 160  */
 161
 162 void RAM_MemTest_WriteAddrLine (unsigned long startaddr,
 163                                                                 unsigned long size, int swapped)
 164 {
 165         RAM_MEMTEST_ADDRLINE *p, *pe;
 166
 167         p = (RAM_MEMTEST_ADDRLINE *) startaddr;
 168         pe = (RAM_MEMTEST_ADDRLINE *) (startaddr + size);
 169
 170         if (!swapped) {
 171                 while (p < pe) {
 172                         p->addr = (unsigned long) p;
 173                         p++;
 174                 }                                               /* endwhile */
 175         } else {
 176                 while (p < pe) {
 177                         p->addr = Swap_32 ((unsigned long) p);
 178                         p++;
 179                 }                                               /* endwhile */
 180         }                                                       /* endif */
 181 }
 182
 183 /*
 184  * checks the memblock of <size> bytes from <startaddr>
 185  * returns the address of the error or NULL if all is well
 186  */
 187
 188 void *RAM_MemTest_CheckAddrLine (int mode, unsigned long startaddr,
 189                                                                  unsigned long size, int swapped)
 190 {
 191         RAM_MEMTEST_ADDRLINE *p, *pe;
 192         unsigned long actual, expected;
 193
 194         p = (RAM_MEMTEST_ADDRLINE *) startaddr;
 195         pe = (RAM_MEMTEST_ADDRLINE *) (startaddr + size);
 196
 197         if (!swapped) {
 198                 while (p < pe) {
 199                         actual = p->addr;
 200                         expected = (unsigned long) p;
 201                         if (actual != expected) {
 202                                 Write_Error (mode, (unsigned long) &(p->addr), expected,
 203                                                          actual);
 204                                 return ((void *) &(p->addr));
 205                         }                                       /* endif */
 206                         p++;
 207                 }                                               /* endwhile */
 208         } else {
 209                 while (p < pe) {
 210                         actual = p->addr;
 211                         expected = Swap_32 ((unsigned long) p);
 212                         if (actual != expected) {
 213                                 Write_Error (mode, (unsigned long) &(p->addr), expected,
 214                                                          actual);
 215                                 return ((void *) &(p->addr));
 216                         }                                       /* endif */
 217                         p++;
 218                 }                                               /* endwhile */
 219         }                                                       /* endif */
 220
 221         return (NULL);
 222 }
 223
 224 /*
 225  * checks the memblock of <size> bytes from <startaddr+size>
 226  * returns the address of the error or NULL if all is well
 227  */
 228
 229 void *RAM_MemTest_CheckAddrLineReverse (int mode, unsigned long startaddr,
 230                                                                                 unsigned long size, int swapped)
 231 {
 232         RAM_MEMTEST_ADDRLINE *p, *pe;
 233         unsigned long actual, expected;
 234
 235         p = (RAM_MEMTEST_ADDRLINE *) (startaddr + size - sizeof (p->addr));
 236         pe = (RAM_MEMTEST_ADDRLINE *) startaddr;
 237
 238         if (!swapped) {
 239                 while (p > pe) {
 240                         actual = p->addr;
 241                         expected = (unsigned long) p;
 242                         if (actual != expected) {
 243                                 Write_Error (mode, (unsigned long) &(p->addr), expected,
 244                                                          actual);
 245                                 return ((void *) &(p->addr));
 246                         }                                       /* endif */
 247                         p--;
 248                 }                                               /* endwhile */
 249         } else {
 250                 while (p > pe) {
 251                         actual = p->addr;
 252                         expected = Swap_32 ((unsigned long) p);
 253                         if (actual != expected) {
 254                                 Write_Error (mode, (unsigned long) &(p->addr), expected,
 255                                                          actual);
 256                                 return ((void *) &(p->addr));
 257                         }                                       /* endif */
 258                         p--;
 259                 }                                               /* endwhile */
 260         }                                                       /* endif */
 261
 262         return (NULL);
 263 }
 264
 265 /*
 266  * fills the memblock of <size> bytes from <startaddr> with walking bit pattern
 267  */
 268
 269 void RAM_MemTest_WriteWalkBit (unsigned long startaddr, unsigned long size)
 270 {
 271         volatile unsigned long *p, *pe;
 272         unsigned long i;
 273
 274         p = (unsigned long *) startaddr;
 275         pe = (unsigned long *) (startaddr + size);
 276         i = 0;
 277
 278         while (p < pe) {
 279                 *p = 1UL << i;
 280                 i = (i + 1 + (((unsigned long) p) >> 7)) % 32;
 281                 p++;
 282         }                                                       /* endwhile */
 283 }
 284
 285 /*
 286  * checks the memblock of <size> bytes from <startaddr>
 287  * returns the address of the error or NULL if all is well
 288  */
 289
 290 void *RAM_MemTest_CheckWalkBit (int mode, unsigned long startaddr,
 291                                                                 unsigned long size)
 292 {
 293         volatile unsigned long *p, *pe;
 294         unsigned long actual, expected;
 295         unsigned long i;
 296
 297         p = (unsigned long *) startaddr;
 298         pe = (unsigned long *) (startaddr + size);
 299         i = 0;
 300
 301         while (p < pe) {
 302                 actual = *p;
 303                 expected = (1UL << i);
 304                 if (actual != expected) {
 305                         Write_Error (mode, (unsigned long) p, expected, actual);
 306                         return ((void *) p);
 307                 }                                               /* endif */
 308                 i = (i + 1 + (((unsigned long) p) >> 7)) % 32;
 309                 p++;
 310         }                                                       /* endwhile */
 311
 312         return (NULL);
 313 }
 314
 315 /*
 316  * fills the memblock of <size> bytes from <startaddr> with "random" pattern
 317  */
 318
 319 void RAM_MemTest_WriteRandomPattern (unsigned long startaddr,
 320                                                                          unsigned long size,
 321                                                                          unsigned long *pat)
 322 {
 323         unsigned long i, p;
 324
 325         p = *pat;
 326
 327         for (i = 0; i < (size / 4); i++) {
 328                 *(unsigned long *) (startaddr + i * 4) = p;
 329                 if ((p % 2) > 0) {
 330                         p ^= i;
 331                         p >>= 1;
 332                         p |= 0x80000000;
 333                 } else {
 334                         p ^= ~i;
 335                         p >>= 1;
 336                 }                                               /* endif */
 337         }                                                       /* endfor */
 338         *pat = p;
 339 }
 340
 341 /*
 342  * checks the memblock of <size> bytes from <startaddr>
 343  * returns the address of the error or NULL if all is well
 344  */
 345
 346 void *RAM_MemTest_CheckRandomPattern (int mode, unsigned long startaddr,
 347                                                                           unsigned long size,
 348                                                                           unsigned long *pat)
 349 {
 350         void *perr = NULL;
 351         unsigned long i, p, p1;
 352
 353         p = *pat;
 354
 355         for (i = 0; i < (size / 4); i++) {
 356                 p1 = *(unsigned long *) (startaddr + i * 4);
 357                 if (p1 != p) {
 358                         if (perr == NULL) {
 359                                 Write_Error (mode, startaddr + i * 4, p, p1);
 360                                 perr = (void *) (startaddr + i * 4);
 361                         }                                       /* endif */
 362                 }
 363                 /* endif */
 364                 if ((p % 2) > 0) {
 365                         p ^= i;
 366                         p >>= 1;
 367                         p |= 0x80000000;
 368                 } else {
 369                         p ^= ~i;
 370                         p >>= 1;
 371                 }                                               /* endif */
 372         }                                                       /* endfor */
 373
 374         *pat = p;
 375         return (perr);
 376 }
 377
 378
 379 void RAM_MemTest_WriteData1 (unsigned long startaddr, unsigned long size,
 380                                                          unsigned long *pat)
 381 {
 382         RAM_MemTest_WritePattern2 (startaddr, size, TESTPAT1, TESTPAT2);
 383 }
 384
 385 void *RAM_MemTest_CheckData1 (int mode, unsigned long startaddr,
 386                                                           unsigned long size, unsigned long *pat)
 387 {
 388         return (RAM_MemTest_CheckPattern2
 389                         (mode, startaddr, size, TESTPAT1, TESTPAT2));
 390 }
 391
 392 void RAM_MemTest_WriteData2 (unsigned long startaddr, unsigned long size,
 393                                                          unsigned long *pat)
 394 {
 395         RAM_MemTest_WritePattern2 (startaddr, size, TESTPAT2, TESTPAT1);
 396 }
 397
 398 void *RAM_MemTest_CheckData2 (int mode, unsigned long startaddr,
 399                                                           unsigned long size, unsigned long *pat)
 400 {
 401         return (RAM_MemTest_CheckPattern2
 402                         (mode, startaddr, size, TESTPAT2, TESTPAT1));
 403 }
 404
 405 void RAM_MemTest_WriteAddr1 (unsigned long startaddr, unsigned long size,
 406                                                          unsigned long *pat)
 407 {
 408         RAM_MemTest_WriteAddrLine (startaddr, size, FALSE);
 409 }
 410
 411 void *RAM_MemTest_Check1Addr1 (int mode, unsigned long startaddr,
 412                                                            unsigned long size, unsigned long *pat)
 413 {
 414         return (RAM_MemTest_CheckAddrLine (mode, startaddr, size, FALSE));
 415 }
 416
 417 void *RAM_MemTest_Check2Addr1 (int mode, unsigned long startaddr,
 418                                                            unsigned long size, unsigned long *pat)
 419 {
 420         return (RAM_MemTest_CheckAddrLineReverse
 421                         (mode, startaddr, size, FALSE));
 422 }
 423
 424 void RAM_MemTest_WriteAddr2 (unsigned long startaddr, unsigned long size,
 425                                                          unsigned long *pat)
 426 {
 427         RAM_MemTest_WriteAddrLine (startaddr, size, TRUE);
 428 }
 429
 430 void *RAM_MemTest_Check1Addr2 (int mode, unsigned long startaddr,
 431                                                            unsigned long size, unsigned long *pat)
 432 {
 433         return (RAM_MemTest_CheckAddrLine (mode, startaddr, size, TRUE));
 434 }
 435
 436 void *RAM_MemTest_Check2Addr2 (int mode, unsigned long startaddr,
 437                                                            unsigned long size, unsigned long *pat)
 438 {
 439         return (RAM_MemTest_CheckAddrLineReverse
 440                         (mode, startaddr, size, TRUE));
 441 }
 442
 443
 444 typedef struct {
 445         void (*test_write) (unsigned long startaddr, unsigned long size,
 446                                                 unsigned long *pat);
 447         char *test_write_desc;
 448         void *(*test_check1) (int mode, unsigned long startaddr,
 449                                                   unsigned long size, unsigned long *pat);
 450         void *(*test_check2) (int mode, unsigned long startaddr,
 451                                                   unsigned long size, unsigned long *pat);
 452 } RAM_MEMTEST_FUNC;
 453
 454
 455 #define TEST_STAGES 5
 456 static RAM_MEMTEST_FUNC test_stage[TEST_STAGES] = {
 457         {RAM_MemTest_WriteData1, "data test 1...\n", RAM_MemTest_CheckData1,
 458          NULL},
 459         {RAM_MemTest_WriteData2, "data test 2...\n", RAM_MemTest_CheckData2,
 460          NULL},
 461         {RAM_MemTest_WriteAddr1, "address line test...\n",
 462          RAM_MemTest_Check1Addr1, RAM_MemTest_Check2Addr1},
 463         {RAM_MemTest_WriteAddr2, "address line test (swapped)...\n",
 464          RAM_MemTest_Check1Addr2, RAM_MemTest_Check2Addr2},
 465         {RAM_MemTest_WriteRandomPattern, "random data test...\n",
 466          RAM_MemTest_CheckRandomPattern, NULL}
 467 };
 468
 469 void mem_test_reloc(void)
 470 {
 471         DECLARE_GLOBAL_DATA_PTR;
 472         unsigned long addr;
 473         int i;
 474         for (i=0; i< TEST_STAGES; i++) {
 475                 addr = (ulong) (test_stage[i].test_write) + gd->reloc_off;
 476                 test_stage[i].test_write=
 477                         (void (*) (unsigned long startaddr, unsigned long size,
 478                                                 unsigned long *pat))addr;
 479                 addr = (ulong) (test_stage[i].test_write_desc) + gd->reloc_off;
 480                 test_stage[i].test_write_desc=(char *)addr;
 481                 if(test_stage[i].test_check1) {
 482                         addr = (ulong) (test_stage[i].test_check1) + gd->reloc_off;
 483                         test_stage[i].test_check1=
 484                                 (void *(*) (int mode, unsigned long startaddr,
 485                                  unsigned long size, unsigned long *pat))addr;
 486                 }
 487                 if(test_stage[i].test_check2) {
 488                         addr = (ulong) (test_stage[i].test_check2) + gd->reloc_off;
 489                         test_stage[i].test_check2=
 490                                 (void *(*) (int mode, unsigned long startaddr,
 491                                  unsigned long size, unsigned long *pat))addr;
 492                 }
 493         }
 494 }
 495
 496
 497 int mem_test (unsigned long start, unsigned long ramsize, int quiet, int reloc)
 498 {
 499         unsigned long errors, stage;
 500         unsigned long startaddr, size, i;
 501         const unsigned long blocksize = 0x80000;        /* check in 512KB blocks */
 502         unsigned long *perr;
 503         unsigned long rdatapat;
 504         char dispbuf[80];
 505         int status = TEST_PASSED;
 506         int prog = 0;
 507
 508         errors = 0;
 509         startaddr = start;
 510         size = ramsize;
 511         if ((quiet & TEST_SHOW_PROG) == TEST_SHOW_PROG) {
 512                 prog++;
 513                 printf (".");
 514         }
 515         sprintf (dispbuf, "\nMemory Test: addr = 0x%lx size = 0x%lx\n",
 516                          startaddr, size);
 517         testm_puts (quiet, dispbuf);
 518         for (stage = 0; stage < TEST_STAGES; stage++) {
 519                 sprintf (dispbuf, test_stage[stage].test_write_desc);
 520                 testm_puts (quiet, dispbuf);
 521                 /* fill SDRAM */
 522                 rdatapat = 0x12345678;
 523                 sprintf (dispbuf, "writing block:     ");
 524                 testm_puts (quiet, dispbuf);
 525                 for (i = 0; i < size; i += blocksize) {
 526                         sprintf (dispbuf, "%04lX\b\b\b\b", i / blocksize);
 527                         testm_puts (quiet, dispbuf);
 528                         test_stage[stage].test_write (startaddr + i, blocksize,
 529                                                                                   &rdatapat);
 530                 }                                               /* endfor */
 531                 sprintf (dispbuf, "\n");
 532                 testm_puts (quiet, dispbuf);
 533                 if ((quiet & TEST_SHOW_PROG) == TEST_SHOW_PROG) {
 534                         prog++;
 535                         printf (".");
 536                 }
 537                 /* check SDRAM */
 538                 rdatapat = 0x12345678;
 539                 sprintf (dispbuf, "checking block:     ");
 540                 testm_puts (quiet, dispbuf);
 541                 for (i = 0; i < size; i += blocksize) {
 542                         sprintf (dispbuf, "%04lX\b\b\b\b", i / blocksize);
 543                         testm_puts (quiet, dispbuf);
 544                         if ((perr =
 545                                  test_stage[stage].test_check1 (quiet, startaddr + i,
 546                                                                                                 blocksize,
 547                                                                                                 &rdatapat)) != NULL) {
 548                                 status = TEST_FAILED;
 549                         }                                       /* endif */
 550                 }                                               /* endfor */
 551                 sprintf (dispbuf, "\n");
 552                 testm_puts (quiet, dispbuf);
 553                 if ((quiet & TEST_SHOW_PROG) == TEST_SHOW_PROG) {
 554                         prog++;
 555                         printf (".");
 556                 }
 557                 if (test_stage[stage].test_check2 != NULL) {
 558                         /* check2 SDRAM */
 559                         sprintf (dispbuf, "2nd checking block:     ");
 560                         rdatapat = 0x12345678;
 561                         testm_puts (quiet, dispbuf);
 562                         for (i = 0; i < size; i += blocksize) {
 563                                 sprintf (dispbuf, "%04lX\b\b\b\b", i / blocksize);
 564                                 testm_puts (quiet, dispbuf);
 565                                 if ((perr =
 566                                          test_stage[stage].test_check2 (quiet, startaddr + i,
 567                                                                                                         blocksize,
 568                                                                                                         &rdatapat)) != NULL) {
 569                                         status = TEST_FAILED;
 570                                 }                               /* endif */
 571                         }                                       /* endfor */
 572                         sprintf (dispbuf, "\n");
 573                         testm_puts (quiet, dispbuf);
 574                         if ((quiet & TEST_SHOW_PROG) == TEST_SHOW_PROG) {
 575                                 prog++;
 576                                 printf (".");
 577                         }
 578                 }
 579
 580         }                                                       /* next stage */
 581         if ((quiet & TEST_SHOW_PROG) == TEST_SHOW_PROG) {
 582                 while (prog-- > 0)
 583                         printf ("\b \b");
 584         }
 585
 586         if (status == TEST_FAILED)
 587                 errors++;
 588
 589         return (errors);
 590 }