cmd/onenand.c

   1 /*
   2  *  U-Boot command for OneNAND support
   3  *
   4  *  Copyright (C) 2005-2008 Samsung Electronics
   5  *  Kyungmin Park <kyungmin.park@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License version 2 as
   9  * published by the Free Software Foundation.
  10  */
  11
  12 #include <common.h>
  13 #include <command.h>
  14 #include <malloc.h>
  15
  16 #include <linux/compat.h>
  17 #include <linux/mtd/mtd.h>
  18 #include <linux/mtd/onenand.h>
  19
  20 #include <asm/io.h>
  21
  22 static struct mtd_info *mtd;
  23
  24 static loff_t next_ofs;
  25 static loff_t skip_ofs;
  26
  27 static int arg_off_size_onenand(int argc, char * const argv[], ulong *off,
  28                                 size_t *size)
  29 {
  30         if (argc >= 1) {
  31                 if (!(str2long(argv[0], off))) {
  32                         printf("'%s' is not a number\n", argv[0]);
  33                         return -1;
  34                 }
  35         } else {
  36                 *off = 0;
  37         }
  38
  39         if (argc >= 2) {
  40                 if (!(str2long(argv[1], (ulong *)size))) {
  41                         printf("'%s' is not a number\n", argv[1]);
  42                         return -1;
  43                 }
  44         } else {
  45                 *size = mtd->size - *off;
  46         }
  47
  48         if ((*off + *size) > mtd->size) {
  49                 printf("total chip size (0x%llx) exceeded!\n", mtd->size);
  50                 return -1;
  51         }
  52
  53         if (*size == mtd->size)
  54                 puts("whole chip\n");
  55         else
  56                 printf("offset 0x%lx, size 0x%x\n", *off, *size);
  57
  58         return 0;
  59 }
  60
  61 static int onenand_block_read(loff_t from, size_t len,
  62                               size_t *retlen, u_char *buf, int oob)
  63 {
  64         struct onenand_chip *this = mtd->priv;
  65         int blocks = (int) len >> this->erase_shift;
  66         int blocksize = (1 << this->erase_shift);
  67         loff_t ofs = from;
  68         struct mtd_oob_ops ops = {
  69                 .retlen         = 0,
  70         };
  71         int ret;
  72
  73         if (oob)
  74                 ops.ooblen = blocksize;
  75         else
  76                 ops.len = blocksize;
  77
  78         while (blocks) {
  79                 ret = mtd_block_isbad(mtd, ofs);
  80                 if (ret) {
  81                         printk("Bad blocks %d at 0x%x\n",
  82                                (u32)(ofs >> this->erase_shift), (u32)ofs);
  83                         ofs += blocksize;
  84                         continue;
  85                 }
  86
  87                 if (oob)
  88                         ops.oobbuf = buf;
  89                 else
  90                         ops.datbuf = buf;
  91
  92                 ops.retlen = 0;
  93                 ret = mtd_read_oob(mtd, ofs, &ops);
  94                 if (ret) {
  95                         printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
  96                         ofs += blocksize;
  97                         continue;
  98                 }
  99                 ofs += blocksize;
 100                 buf += blocksize;
 101                 blocks--;
 102                 *retlen += ops.retlen;
 103         }
 104
 105         return 0;
 106 }
 107
 108 static int onenand_write_oneblock_withoob(loff_t to, const u_char * buf,
 109                                           size_t *retlen)
 110 {
 111         struct mtd_oob_ops ops = {
 112                 .len = mtd->writesize,
 113                 .ooblen = mtd->oobsize,
 114                 .mode = MTD_OPS_AUTO_OOB,
 115         };
 116         int page, ret = 0;
 117         for (page = 0; page < (mtd->erasesize / mtd->writesize); page ++) {
 118                 ops.datbuf = (u_char *)buf;
 119                 buf += mtd->writesize;
 120                 ops.oobbuf = (u_char *)buf;
 121                 buf += mtd->oobsize;
 122                 ret = mtd_write_oob(mtd, to, &ops);
 123                 if (ret)
 124                         break;
 125                 to += mtd->writesize;
 126         }
 127
 128         *retlen = (ret) ? 0 : mtd->erasesize;
 129         return ret;
 130 }
 131
 132 static int onenand_block_write(loff_t to, size_t len,
 133                                size_t *retlen, const u_char * buf, int withoob)
 134 {
 135         struct onenand_chip *this = mtd->priv;
 136         int blocks = len >> this->erase_shift;
 137         int blocksize = (1 << this->erase_shift);
 138         loff_t ofs;
 139         size_t _retlen = 0;
 140         int ret;
 141
 142         if ((to & (mtd->writesize - 1)) != 0) {
 143                 printf("Attempt to write non block-aligned data\n");
 144                 *retlen = 0;
 145                 return 1;
 146         }
 147
 148         if (to == next_ofs) {
 149                 next_ofs = to + len;
 150                 to += skip_ofs;
 151         } else {
 152                 next_ofs = to + len;
 153                 skip_ofs = 0;
 154         }
 155         ofs = to;
 156
 157         while (blocks) {
 158                 ret = mtd_block_isbad(mtd, ofs);
 159                 if (ret) {
 160                         printk("Bad blocks %d at 0x%x\n",
 161                                (u32)(ofs >> this->erase_shift), (u32)ofs);
 162                         skip_ofs += blocksize;
 163                         goto next;
 164                 }
 165
 166                 if (!withoob)
 167                         ret = mtd_write(mtd, ofs, blocksize, &_retlen, buf);
 168                 else
 169                         ret = onenand_write_oneblock_withoob(ofs, buf, &_retlen);
 170                 if (ret) {
 171                         printk("Write failed 0x%x, %d", (u32)ofs, ret);
 172                         skip_ofs += blocksize;
 173                         goto next;
 174                 }
 175
 176                 buf += blocksize;
 177                 blocks--;
 178                 *retlen += _retlen;
 179 next:
 180                 ofs += blocksize;
 181         }
 182
 183         return 0;
 184 }
 185
 186 static int onenand_block_erase(u32 start, u32 size, int force)
 187 {
 188         struct onenand_chip *this = mtd->priv;
 189         struct erase_info instr = {
 190                 .callback       = NULL,
 191         };
 192         loff_t ofs;
 193         int ret;
 194         int blocksize = 1 << this->erase_shift;
 195
 196         for (ofs = start; ofs < (start + size); ofs += blocksize) {
 197                 ret = mtd_block_isbad(mtd, ofs);
 198                 if (ret && !force) {
 199                         printf("Skip erase bad block %d at 0x%x\n",
 200                                (u32)(ofs >> this->erase_shift), (u32)ofs);
 201                         continue;
 202                 }
 203
 204                 instr.addr = ofs;
 205                 instr.len = blocksize;
 206                 instr.priv = force;
 207                 instr.mtd = mtd;
 208                 ret = mtd_erase(mtd, &instr);
 209                 if (ret) {
 210                         printf("erase failed block %d at 0x%x\n",
 211                                (u32)(ofs >> this->erase_shift), (u32)ofs);
 212                         continue;
 213                 }
 214         }
 215
 216         return 0;
 217 }
 218
 219 static int onenand_block_test(u32 start, u32 size)
 220 {
 221         struct onenand_chip *this = mtd->priv;
 222         struct erase_info instr = {
 223                 .callback       = NULL,
 224                 .priv           = 0,
 225         };
 226
 227         int blocks;
 228         loff_t ofs;
 229         int blocksize = 1 << this->erase_shift;
 230         int start_block, end_block;
 231         size_t retlen;
 232         u_char *buf;
 233         u_char *verify_buf;
 234         int ret;
 235
 236         buf = malloc(blocksize);
 237         if (!buf) {
 238                 printf("Not enough malloc space available!\n");
 239                 return -1;
 240         }
 241
 242         verify_buf = malloc(blocksize);
 243         if (!verify_buf) {
 244                 printf("Not enough malloc space available!\n");
 245                 return -1;
 246         }
 247
 248         start_block = start >> this->erase_shift;
 249         end_block = (start + size) >> this->erase_shift;
 250
 251         /* Protect boot-loader from badblock testing */
 252         if (start_block < 2)
 253                 start_block = 2;
 254
 255         if (end_block > (mtd->size >> this->erase_shift))
 256                 end_block = mtd->size >> this->erase_shift;
 257
 258         blocks = start_block;
 259         ofs = start;
 260         while (blocks < end_block) {
 261                 printf("\rTesting block %d at 0x%x", (u32)(ofs >> this->erase_shift), (u32)ofs);
 262
 263                 ret = mtd_block_isbad(mtd, ofs);
 264                 if (ret) {
 265                         printf("Skip erase bad block %d at 0x%x\n",
 266                                (u32)(ofs >> this->erase_shift), (u32)ofs);
 267                         goto next;
 268                 }
 269
 270                 instr.addr = ofs;
 271                 instr.len = blocksize;
 272                 ret = mtd_erase(mtd, &instr);
 273                 if (ret) {
 274                         printk("Erase failed 0x%x, %d\n", (u32)ofs, ret);
 275                         goto next;
 276                 }
 277
 278                 ret = mtd_write(mtd, ofs, blocksize, &retlen, buf);
 279                 if (ret) {
 280                         printk("Write failed 0x%x, %d\n", (u32)ofs, ret);
 281                         goto next;
 282                 }
 283
 284                 ret = mtd_read(mtd, ofs, blocksize, &retlen, verify_buf);
 285                 if (ret) {
 286                         printk("Read failed 0x%x, %d\n", (u32)ofs, ret);
 287                         goto next;
 288                 }
 289
 290                 if (memcmp(buf, verify_buf, blocksize))
 291                         printk("\nRead/Write test failed at 0x%x\n", (u32)ofs);
 292
 293 next:
 294                 ofs += blocksize;
 295                 blocks++;
 296         }
 297         printf("...Done\n");
 298
 299         free(buf);
 300         free(verify_buf);
 301
 302         return 0;
 303 }
 304
 305 static int onenand_dump(struct mtd_info *mtd, ulong off, int only_oob)
 306 {
 307         int i;
 308         u_char *datbuf, *oobbuf, *p;
 309         struct mtd_oob_ops ops;
 310         loff_t addr;
 311
 312         datbuf = malloc(mtd->writesize + mtd->oobsize);
 313         oobbuf = malloc(mtd->oobsize);
 314         if (!datbuf || !oobbuf) {
 315                 puts("No memory for page buffer\n");
 316                 return 1;
 317         }
 318         off &= ~(mtd->writesize - 1);
 319         addr = (loff_t) off;
 320         memset(&ops, 0, sizeof(ops));
 321         ops.datbuf = datbuf;
 322         ops.oobbuf = oobbuf;
 323         ops.len = mtd->writesize;
 324         ops.ooblen = mtd->oobsize;
 325         ops.retlen = 0;
 326         i = mtd_read_oob(mtd, addr, &ops);
 327         if (i < 0) {
 328                 printf("Error (%d) reading page %08lx\n", i, off);
 329                 free(datbuf);
 330                 free(oobbuf);
 331                 return 1;
 332         }
 333         printf("Page %08lx dump:\n", off);
 334         i = mtd->writesize >> 4;
 335         p = datbuf;
 336
 337         while (i--) {
 338                 if (!only_oob)
 339                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
 340                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
 341                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
 342                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
 343                                p[15]);
 344                 p += 16;
 345         }
 346         puts("OOB:\n");
 347         i = mtd->oobsize >> 3;
 348         p = oobbuf;
 349
 350         while (i--) {
 351                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
 352                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
 353                 p += 8;
 354         }
 355         free(datbuf);
 356         free(oobbuf);
 357
 358         return 0;
 359 }
 360
 361 static int do_onenand_info(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 362 {
 363         printf("%s\n", mtd->name);
 364         return 0;
 365 }
 366
 367 static int do_onenand_bad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 368 {
 369         ulong ofs;
 370
 371         mtd = &onenand_mtd;
 372         /* Currently only one OneNAND device is supported */
 373         printf("\nDevice %d bad blocks:\n", 0);
 374         for (ofs = 0; ofs < mtd->size; ofs += mtd->erasesize) {
 375                 if (mtd_block_isbad(mtd, ofs))
 376                         printf("  %08x\n", (u32)ofs);
 377         }
 378
 379         return 0;
 380 }
 381
 382 static int do_onenand_read(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 383 {
 384         char *s;
 385         int oob = 0;
 386         ulong addr, ofs;
 387         size_t len;
 388         int ret = 0;
 389         size_t retlen = 0;
 390
 391         if (argc < 3)
 392                 return CMD_RET_USAGE;
 393
 394         s = strchr(argv[0], '.');
 395         if ((s != NULL) && (!strcmp(s, ".oob")))
 396                 oob = 1;
 397
 398         addr = (ulong)simple_strtoul(argv[1], NULL, 16);
 399
 400         printf("\nOneNAND read: ");
 401         if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0)
 402                 return 1;
 403
 404         ret = onenand_block_read(ofs, len, &retlen, (u8 *)addr, oob);
 405
 406         printf(" %d bytes read: %s\n", retlen, ret ? "ERROR" : "OK");
 407
 408         return ret == 0 ? 0 : 1;
 409 }
 410
 411 static int do_onenand_write(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 412 {
 413         ulong addr, ofs;
 414         size_t len;
 415         int ret = 0, withoob = 0;
 416         size_t retlen = 0;
 417
 418         if (argc < 3)
 419                 return CMD_RET_USAGE;
 420
 421         if (strncmp(argv[0] + 6, "yaffs", 5) == 0)
 422                 withoob = 1;
 423
 424         addr = (ulong)simple_strtoul(argv[1], NULL, 16);
 425
 426         printf("\nOneNAND write: ");
 427         if (arg_off_size_onenand(argc - 2, argv + 2, &ofs, &len) != 0)
 428                 return 1;
 429
 430         ret = onenand_block_write(ofs, len, &retlen, (u8 *)addr, withoob);
 431
 432         printf(" %d bytes written: %s\n", retlen, ret ? "ERROR" : "OK");
 433
 434         return ret == 0 ? 0 : 1;
 435 }
 436
 437 static int do_onenand_erase(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 438 {
 439         ulong ofs;
 440         int ret = 0;
 441         size_t len;
 442         int force;
 443
 444         /*
 445          * Syntax is:
 446          *   0       1     2       3    4
 447          *   onenand erase [force] [off size]
 448          */
 449         argc--;
 450         argv++;
 451         if (argc)
 452         {
 453                 if (!strcmp("force", argv[0]))
 454                 {
 455                         force = 1;
 456                         argc--;
 457                         argv++;
 458                 }
 459         }
 460         printf("\nOneNAND erase: ");
 461
 462         /* skip first two or three arguments, look for offset and size */
 463         if (arg_off_size_onenand(argc, argv, &ofs, &len) != 0)
 464                 return 1;
 465
 466         ret = onenand_block_erase(ofs, len, force);
 467
 468         printf("%s\n", ret ? "ERROR" : "OK");
 469
 470         return ret == 0 ? 0 : 1;
 471 }
 472
 473 static int do_onenand_test(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 474 {
 475         ulong ofs;
 476         int ret = 0;
 477         size_t len;
 478
 479         /*
 480          * Syntax is:
 481          *   0       1     2       3    4
 482          *   onenand test [force] [off size]
 483          */
 484
 485         printf("\nOneNAND test: ");
 486
 487         /* skip first two or three arguments, look for offset and size */
 488         if (arg_off_size_onenand(argc - 1, argv + 1, &ofs, &len) != 0)
 489                 return 1;
 490
 491         ret = onenand_block_test(ofs, len);
 492
 493         printf("%s\n", ret ? "ERROR" : "OK");
 494
 495         return ret == 0 ? 0 : 1;
 496 }
 497
 498 static int do_onenand_dump(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 499 {
 500         ulong ofs;
 501         int ret = 0;
 502         char *s;
 503
 504         if (argc < 2)
 505                 return CMD_RET_USAGE;
 506
 507         s = strchr(argv[0], '.');
 508         ofs = (int)simple_strtoul(argv[1], NULL, 16);
 509
 510         if (s != NULL && strcmp(s, ".oob") == 0)
 511                 ret = onenand_dump(mtd, ofs, 1);
 512         else
 513                 ret = onenand_dump(mtd, ofs, 0);
 514
 515         return ret == 0 ? 1 : 0;
 516 }
 517
 518 static int do_onenand_markbad(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 519 {
 520         int ret = 0;
 521         ulong addr;
 522
 523         argc -= 2;
 524         argv += 2;
 525
 526         if (argc <= 0)
 527                 return CMD_RET_USAGE;
 528
 529         while (argc > 0) {
 530                 addr = simple_strtoul(*argv, NULL, 16);
 531
 532                 if (mtd_block_markbad(mtd, addr)) {
 533                         printf("block 0x%08lx NOT marked "
 534                                 "as bad! ERROR %d\n",
 535                                 addr, ret);
 536                         ret = 1;
 537                 } else {
 538                         printf("block 0x%08lx successfully "
 539                                 "marked as bad\n",
 540                                 addr);
 541                 }
 542                 --argc;
 543                 ++argv;
 544         }
 545         return ret;
 546 }
 547
 548 static cmd_tbl_t cmd_onenand_sub[] = {
 549         U_BOOT_CMD_MKENT(info, 1, 0, do_onenand_info, "", ""),
 550         U_BOOT_CMD_MKENT(bad, 1, 0, do_onenand_bad, "", ""),
 551         U_BOOT_CMD_MKENT(read, 4, 0, do_onenand_read, "", ""),
 552         U_BOOT_CMD_MKENT(write, 4, 0, do_onenand_write, "", ""),
 553         U_BOOT_CMD_MKENT(write.yaffs, 4, 0, do_onenand_write, "", ""),
 554         U_BOOT_CMD_MKENT(erase, 3, 0, do_onenand_erase, "", ""),
 555         U_BOOT_CMD_MKENT(test, 3, 0, do_onenand_test, "", ""),
 556         U_BOOT_CMD_MKENT(dump, 2, 0, do_onenand_dump, "", ""),
 557         U_BOOT_CMD_MKENT(markbad, CONFIG_SYS_MAXARGS, 0, do_onenand_markbad, "", ""),
 558 };
 559
 560 #ifdef CONFIG_NEEDS_MANUAL_RELOC
 561 void onenand_reloc(void) {
 562         fixup_cmdtable(cmd_onenand_sub, ARRAY_SIZE(cmd_onenand_sub));
 563 }
 564 #endif
 565
 566 static int do_onenand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
 567 {
 568         cmd_tbl_t *c;
 569
 570         if (argc < 2)
 571                 return CMD_RET_USAGE;
 572
 573         mtd = &onenand_mtd;
 574
 575         /* Strip off leading 'onenand' command argument */
 576         argc--;
 577         argv++;
 578
 579         c = find_cmd_tbl(argv[0], &cmd_onenand_sub[0], ARRAY_SIZE(cmd_onenand_sub));
 580
 581         if (c)
 582                 return c->cmd(cmdtp, flag, argc, argv);
 583         else
 584                 return CMD_RET_USAGE;
 585 }
 586
 587 U_BOOT_CMD(
 588         onenand,        CONFIG_SYS_MAXARGS,     1,      do_onenand,
 589         "OneNAND sub-system",
 590         "info - show available OneNAND devices\n"
 591         "onenand bad - show bad blocks\n"
 592         "onenand read[.oob] addr off size\n"
 593         "onenand write[.yaffs] addr off size\n"
 594         "    read/write 'size' bytes starting at offset 'off'\n"
 595         "    to/from memory address 'addr', skipping bad blocks.\n"
 596         "onenand erase [force] [off size] - erase 'size' bytes from\n"
 597         "onenand test [off size] - test 'size' bytes from\n"
 598         "    offset 'off' (entire device if not specified)\n"
 599         "onenand dump[.oob] off - dump page\n"
 600         "onenand markbad off [...] - mark bad block(s) at offset (UNSAFE)"
 601 );