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NAND: Always skip blocks on read/write/boot.
[people/ms/u-boot.git] / common / cmd_nand.c
1 /*
2 * Driver for NAND support, Rick Bronson
3 * borrowed heavily from:
4 * (c) 1999 Machine Vision Holdings, Inc.
5 * (c) 1999, 2000 David Woodhouse <dwmw2@infradead.org>
6 *
7 * Added 16-bit nand support
8 * (C) 2004 Texas Instruments
9 */
10
11 #include <common.h>
12
13
14 #ifndef CFG_NAND_LEGACY
15 /*
16 *
17 * New NAND support
18 *
19 */
20 #include <common.h>
21 #include <linux/mtd/mtd.h>
22
23 #if defined(CONFIG_CMD_NAND)
24
25 #include <command.h>
26 #include <watchdog.h>
27 #include <malloc.h>
28 #include <asm/byteorder.h>
29 #include <jffs2/jffs2.h>
30 #include <nand.h>
31
32 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
33
34 /* parition handling routines */
35 int mtdparts_init(void);
36 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
37 int find_dev_and_part(const char *id, struct mtd_device **dev,
38 u8 *part_num, struct part_info **part);
39 #endif
40
41 static int nand_dump(nand_info_t *nand, ulong off, int only_oob)
42 {
43 int i;
44 u_char *datbuf, *oobbuf, *p;
45
46 datbuf = malloc(nand->writesize + nand->oobsize);
47 oobbuf = malloc(nand->oobsize);
48 if (!datbuf || !oobbuf) {
49 puts("No memory for page buffer\n");
50 return 1;
51 }
52 off &= ~(nand->writesize - 1);
53 loff_t addr = (loff_t) off;
54 struct mtd_oob_ops ops;
55 memset(&ops, 0, sizeof(ops));
56 ops.datbuf = datbuf;
57 ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
58 ops.len = nand->writesize;
59 ops.ooblen = nand->oobsize;
60 ops.mode = MTD_OOB_RAW;
61 i = nand->read_oob(nand, addr, &ops);
62 if (i < 0) {
63 printf("Error (%d) reading page %08lx\n", i, off);
64 free(datbuf);
65 free(oobbuf);
66 return 1;
67 }
68 printf("Page %08lx dump:\n", off);
69 i = nand->writesize >> 4;
70 p = datbuf;
71
72 while (i--) {
73 if (!only_oob)
74 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
75 " %02x %02x %02x %02x %02x %02x %02x %02x\n",
76 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
77 p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
78 p += 16;
79 }
80 puts("OOB:\n");
81 i = nand->oobsize >> 3;
82 while (i--) {
83 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
84 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
85 p += 8;
86 }
87 free(datbuf);
88 free(oobbuf);
89
90 return 0;
91 }
92
93 /* ------------------------------------------------------------------------- */
94
95 static inline int str2long(char *p, ulong *num)
96 {
97 char *endptr;
98
99 *num = simple_strtoul(p, &endptr, 16);
100 return (*p != '\0' && *endptr == '\0') ? 1 : 0;
101 }
102
103 static int
104 arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, size_t *size)
105 {
106 int idx = nand_curr_device;
107 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
108 struct mtd_device *dev;
109 struct part_info *part;
110 u8 pnum;
111
112 if (argc >= 1 && !(str2long(argv[0], off))) {
113 if ((mtdparts_init() == 0) &&
114 (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
115 if (dev->id->type != MTD_DEV_TYPE_NAND) {
116 puts("not a NAND device\n");
117 return -1;
118 }
119 *off = part->offset;
120 if (argc >= 2) {
121 if (!(str2long(argv[1], (ulong *)size))) {
122 printf("'%s' is not a number\n", argv[1]);
123 return -1;
124 }
125 if (*size > part->size)
126 *size = part->size;
127 } else {
128 *size = part->size;
129 }
130 idx = dev->id->num;
131 *nand = nand_info[idx];
132 goto out;
133 }
134 }
135 #endif
136
137 if (argc >= 1) {
138 if (!(str2long(argv[0], off))) {
139 printf("'%s' is not a number\n", argv[0]);
140 return -1;
141 }
142 } else {
143 *off = 0;
144 }
145
146 if (argc >= 2) {
147 if (!(str2long(argv[1], (ulong *)size))) {
148 printf("'%s' is not a number\n", argv[1]);
149 return -1;
150 }
151 } else {
152 *size = nand->size - *off;
153 }
154
155 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
156 out:
157 #endif
158 printf("device %d ", idx);
159 if (*size == nand->size)
160 puts("whole chip\n");
161 else
162 printf("offset 0x%lx, size 0x%x\n", *off, *size);
163 return 0;
164 }
165
166 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
167 {
168 int i, dev, ret = 0;
169 ulong addr, off;
170 size_t size;
171 char *cmd, *s;
172 nand_info_t *nand;
173 #ifdef CFG_NAND_QUIET
174 int quiet = CFG_NAND_QUIET;
175 #else
176 int quiet = 0;
177 #endif
178 const char *quiet_str = getenv("quiet");
179
180 /* at least two arguments please */
181 if (argc < 2)
182 goto usage;
183
184 if (quiet_str)
185 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
186
187 cmd = argv[1];
188
189 if (strcmp(cmd, "info") == 0) {
190
191 putc('\n');
192 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
193 if (nand_info[i].name)
194 printf("Device %d: %s, sector size %u KiB\n",
195 i, nand_info[i].name,
196 nand_info[i].erasesize >> 10);
197 }
198 return 0;
199 }
200
201 if (strcmp(cmd, "device") == 0) {
202
203 if (argc < 3) {
204 if ((nand_curr_device < 0) ||
205 (nand_curr_device >= CFG_MAX_NAND_DEVICE))
206 puts("\nno devices available\n");
207 else
208 printf("\nDevice %d: %s\n", nand_curr_device,
209 nand_info[nand_curr_device].name);
210 return 0;
211 }
212 dev = (int)simple_strtoul(argv[2], NULL, 10);
213 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
214 puts("No such device\n");
215 return 1;
216 }
217 printf("Device %d: %s", dev, nand_info[dev].name);
218 puts("... is now current device\n");
219 nand_curr_device = dev;
220
221 #ifdef CFG_NAND_SELECT_DEVICE
222 /*
223 * Select the chip in the board/cpu specific driver
224 */
225 board_nand_select_device(nand_info[dev].priv, dev);
226 #endif
227
228 return 0;
229 }
230
231 if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
232 strncmp(cmd, "dump", 4) != 0 &&
233 strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
234 strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
235 strcmp(cmd, "biterr") != 0 &&
236 strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
237 goto usage;
238
239 /* the following commands operate on the current device */
240 if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
241 !nand_info[nand_curr_device].name) {
242 puts("\nno devices available\n");
243 return 1;
244 }
245 nand = &nand_info[nand_curr_device];
246
247 if (strcmp(cmd, "bad") == 0) {
248 printf("\nDevice %d bad blocks:\n", nand_curr_device);
249 for (off = 0; off < nand->size; off += nand->erasesize)
250 if (nand_block_isbad(nand, off))
251 printf(" %08lx\n", off);
252 return 0;
253 }
254
255 /*
256 * Syntax is:
257 * 0 1 2 3 4
258 * nand erase [clean] [off size]
259 */
260 if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
261 nand_erase_options_t opts;
262 /* "clean" at index 2 means request to write cleanmarker */
263 int clean = argc > 2 && !strcmp("clean", argv[2]);
264 int o = clean ? 3 : 2;
265 int scrub = !strcmp(cmd, "scrub");
266
267 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
268 /* skip first two or three arguments, look for offset and size */
269 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
270 return 1;
271
272 memset(&opts, 0, sizeof(opts));
273 opts.offset = off;
274 opts.length = size;
275 opts.jffs2 = clean;
276 opts.quiet = quiet;
277
278 if (scrub) {
279 puts("Warning: "
280 "scrub option will erase all factory set "
281 "bad blocks!\n"
282 " "
283 "There is no reliable way to recover them.\n"
284 " "
285 "Use this command only for testing purposes "
286 "if you\n"
287 " "
288 "are sure of what you are doing!\n"
289 "\nReally scrub this NAND flash? <y/N>\n");
290
291 if (getc() == 'y' && getc() == '\r') {
292 opts.scrub = 1;
293 } else {
294 puts("scrub aborted\n");
295 return -1;
296 }
297 }
298 ret = nand_erase_opts(nand, &opts);
299 printf("%s\n", ret ? "ERROR" : "OK");
300
301 return ret == 0 ? 0 : 1;
302 }
303
304 if (strncmp(cmd, "dump", 4) == 0) {
305 if (argc < 3)
306 goto usage;
307
308 s = strchr(cmd, '.');
309 off = (int)simple_strtoul(argv[2], NULL, 16);
310
311 if (s != NULL && strcmp(s, ".oob") == 0)
312 ret = nand_dump(nand, off, 1);
313 else
314 ret = nand_dump(nand, off, 0);
315
316 return ret == 0 ? 1 : 0;
317
318 }
319
320 /* read write */
321 if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
322 int read;
323
324 if (argc < 4)
325 goto usage;
326
327 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
328
329 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
330 printf("\nNAND %s: ", read ? "read" : "write");
331 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
332 return 1;
333
334 s = strchr(cmd, '.');
335 if (!s || !strcmp(s, ".jffs2") ||
336 !strcmp(s, ".e") || !strcmp(s, ".i")) {
337 if (read) {
338 /* read */
339 nand_read_options_t opts;
340 memset(&opts, 0, sizeof(opts));
341 opts.buffer = (u_char*) addr;
342 opts.length = size;
343 opts.offset = off;
344 opts.quiet = quiet;
345 /*
346 * ! BROKEN !
347 *
348 * TODO: Function must be implemented
349 *
350 * ret = nand_read_opts(nand, &opts);
351 */
352 } else {
353 /* write */
354 mtd_oob_ops_t opts;
355 memset(&opts, 0, sizeof(opts));
356 opts.datbuf = (u_char*) addr;
357 opts.len = size;
358 opts.ooblen = 64;
359 opts.mode = MTD_OOB_AUTO;
360 ret = nand_write_opts(nand, off, &opts);
361 }
362 } else if (s != NULL && !strcmp(s, ".oob")) {
363 /* out-of-band data */
364 mtd_oob_ops_t ops = {
365 .oobbuf = (u8 *)addr,
366 .ooblen = size,
367 .mode = MTD_OOB_RAW
368 };
369
370 if (read)
371 ret = nand->read_oob(nand, off, &ops);
372 else
373 ret = nand->write_oob(nand, off, &ops);
374 } else {
375 printf("Unknown nand command suffix '%s'.\n", s);
376 return 1;
377 }
378
379 printf(" %d bytes %s: %s\n", size,
380 read ? "read" : "written", ret ? "ERROR" : "OK");
381
382 return ret == 0 ? 0 : 1;
383 }
384
385 if (strcmp(cmd, "markbad") == 0) {
386 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
387
388 int ret = nand->block_markbad(nand, addr);
389 if (ret == 0) {
390 printf("block 0x%08lx successfully marked as bad\n",
391 (ulong) addr);
392 return 0;
393 } else {
394 printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
395 (ulong) addr, ret);
396 }
397 return 1;
398 }
399 if (strcmp(cmd, "biterr") == 0) {
400 /* todo */
401 return 1;
402 }
403
404 if (strcmp(cmd, "lock") == 0) {
405 int tight = 0;
406 int status = 0;
407 if (argc == 3) {
408 if (!strcmp("tight", argv[2]))
409 tight = 1;
410 if (!strcmp("status", argv[2]))
411 status = 1;
412 }
413 /*
414 * ! BROKEN !
415 *
416 * TODO: must be implemented and tested by someone with HW
417 */
418 #if 0
419 if (status) {
420 ulong block_start = 0;
421 ulong off;
422 int last_status = -1;
423
424 struct nand_chip *nand_chip = nand->priv;
425 /* check the WP bit */
426 nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
427 printf("device is %swrite protected\n",
428 (nand_chip->read_byte(nand) & 0x80 ?
429 "NOT " : ""));
430
431 for (off = 0; off < nand->size; off += nand->writesize) {
432 int s = nand_get_lock_status(nand, off);
433
434 /* print message only if status has changed
435 * or at end of chip
436 */
437 if (off == nand->size - nand->writesize
438 || (s != last_status && off != 0)) {
439
440 printf("%08lx - %08lx: %8d pages %s%s%s\n",
441 block_start,
442 off-1,
443 (off-block_start)/nand->writesize,
444 ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
445 ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
446 ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
447 }
448
449 last_status = s;
450 }
451 } else {
452 if (!nand_lock(nand, tight)) {
453 puts("NAND flash successfully locked\n");
454 } else {
455 puts("Error locking NAND flash\n");
456 return 1;
457 }
458 }
459 #endif
460 return 0;
461 }
462
463 if (strcmp(cmd, "unlock") == 0) {
464 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
465 return 1;
466
467 /*
468 * ! BROKEN !
469 *
470 * TODO: must be implemented and tested by someone with HW
471 */
472 #if 0
473 if (!nand_unlock(nand, off, size)) {
474 puts("NAND flash successfully unlocked\n");
475 } else {
476 puts("Error unlocking NAND flash, "
477 "write and erase will probably fail\n");
478 return 1;
479 }
480 #endif
481 return 0;
482 }
483
484 usage:
485 printf("Usage:\n%s\n", cmdtp->usage);
486 return 1;
487 }
488
489 U_BOOT_CMD(nand, 5, 1, do_nand,
490 "nand - NAND sub-system\n",
491 "info - show available NAND devices\n"
492 "nand device [dev] - show or set current device\n"
493 "nand read - addr off|partition size\n"
494 "nand write - addr off|partition size\n"
495 " read/write 'size' bytes starting at offset 'off'\n"
496 " to/from memory address 'addr', skipping bad blocks.\n"
497 "nand erase [clean] [off size] - erase 'size' bytes from\n"
498 " offset 'off' (entire device if not specified)\n"
499 "nand bad - show bad blocks\n"
500 "nand dump[.oob] off - dump page\n"
501 "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
502 "nand markbad off - mark bad block at offset (UNSAFE)\n"
503 "nand biterr off - make a bit error at offset (UNSAFE)\n"
504 "nand lock [tight] [status]\n"
505 " bring nand to lock state or display locked pages\n"
506 "nand unlock [offset] [size] - unlock section\n");
507
508 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
509 ulong offset, ulong addr, char *cmd)
510 {
511 int r;
512 char *ep, *s;
513 size_t cnt;
514 image_header_t *hdr;
515 #if defined(CONFIG_FIT)
516 const void *fit_hdr = NULL;
517 #endif
518
519 s = strchr(cmd, '.');
520 if (s != NULL &&
521 (strcmp(s, ".jffs2") && !strcmp(s, ".e") && !strcmp(s, ".i"))) {
522 printf("Unknown nand load suffix '%s'\n", s);
523 show_boot_progress(-53);
524 return 1;
525 }
526
527 printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
528
529 cnt = nand->writesize;
530 r = nand_read(nand, offset, &cnt, (u_char *) addr);
531 if (r) {
532 puts("** Read error\n");
533 show_boot_progress (-56);
534 return 1;
535 }
536 show_boot_progress (56);
537
538 switch (genimg_get_format ((void *)addr)) {
539 case IMAGE_FORMAT_LEGACY:
540 hdr = (image_header_t *)addr;
541
542 show_boot_progress (57);
543 image_print_contents (hdr);
544
545 cnt = image_get_image_size (hdr);
546 break;
547 #if defined(CONFIG_FIT)
548 case IMAGE_FORMAT_FIT:
549 fit_hdr = (const void *)addr;
550 puts ("Fit image detected...\n");
551
552 cnt = fit_get_size (fit_hdr);
553 break;
554 #endif
555 default:
556 show_boot_progress (-57);
557 puts ("** Unknown image type\n");
558 return 1;
559 }
560 show_boot_progress (57);
561
562 /* FIXME: skip bad blocks */
563 r = nand_read(nand, offset, &cnt, (u_char *) addr);
564 if (r) {
565 puts("** Read error\n");
566 show_boot_progress (-58);
567 return 1;
568 }
569 show_boot_progress (58);
570
571 #if defined(CONFIG_FIT)
572 /* This cannot be done earlier, we need complete FIT image in RAM first */
573 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
574 if (!fit_check_format (fit_hdr)) {
575 show_boot_progress (-150);
576 puts ("** Bad FIT image format\n");
577 return 1;
578 }
579 show_boot_progress (151);
580 fit_print_contents (fit_hdr);
581 }
582 #endif
583
584 /* Loading ok, update default load address */
585
586 load_addr = addr;
587
588 /* Check if we should attempt an auto-start */
589 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
590 char *local_args[2];
591 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
592
593 local_args[0] = cmd;
594 local_args[1] = NULL;
595
596 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
597
598 do_bootm(cmdtp, 0, 1, local_args);
599 return 1;
600 }
601 return 0;
602 }
603
604 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
605 {
606 char *boot_device = NULL;
607 int idx;
608 ulong addr, offset = 0;
609 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
610 struct mtd_device *dev;
611 struct part_info *part;
612 u8 pnum;
613
614 if (argc >= 2) {
615 char *p = (argc == 2) ? argv[1] : argv[2];
616 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
617 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
618 if (dev->id->type != MTD_DEV_TYPE_NAND) {
619 puts("Not a NAND device\n");
620 return 1;
621 }
622 if (argc > 3)
623 goto usage;
624 if (argc == 3)
625 addr = simple_strtoul(argv[1], NULL, 16);
626 else
627 addr = CFG_LOAD_ADDR;
628 return nand_load_image(cmdtp, &nand_info[dev->id->num],
629 part->offset, addr, argv[0]);
630 }
631 }
632 #endif
633
634 show_boot_progress(52);
635 switch (argc) {
636 case 1:
637 addr = CFG_LOAD_ADDR;
638 boot_device = getenv("bootdevice");
639 break;
640 case 2:
641 addr = simple_strtoul(argv[1], NULL, 16);
642 boot_device = getenv("bootdevice");
643 break;
644 case 3:
645 addr = simple_strtoul(argv[1], NULL, 16);
646 boot_device = argv[2];
647 break;
648 case 4:
649 addr = simple_strtoul(argv[1], NULL, 16);
650 boot_device = argv[2];
651 offset = simple_strtoul(argv[3], NULL, 16);
652 break;
653 default:
654 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
655 usage:
656 #endif
657 printf("Usage:\n%s\n", cmdtp->usage);
658 show_boot_progress(-53);
659 return 1;
660 }
661
662 show_boot_progress(53);
663 if (!boot_device) {
664 puts("\n** No boot device **\n");
665 show_boot_progress(-54);
666 return 1;
667 }
668 show_boot_progress(54);
669
670 idx = simple_strtoul(boot_device, NULL, 16);
671
672 if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
673 printf("\n** Device %d not available\n", idx);
674 show_boot_progress(-55);
675 return 1;
676 }
677 show_boot_progress(55);
678
679 return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
680 }
681
682 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
683 "nboot - boot from NAND device\n",
684 "[partition] | [[[loadAddr] dev] offset]\n");
685
686 #endif
687
688 #else /* CFG_NAND_LEGACY */
689 /*
690 *
691 * Legacy NAND support - to be phased out
692 *
693 */
694 #include <command.h>
695 #include <malloc.h>
696 #include <asm/io.h>
697 #include <watchdog.h>
698
699 #ifdef CONFIG_show_boot_progress
700 # include <status_led.h>
701 # define show_boot_progress(arg) show_boot_progress(arg)
702 #else
703 # define show_boot_progress(arg)
704 #endif
705
706 #if defined(CONFIG_CMD_NAND)
707 #include <linux/mtd/nand_legacy.h>
708 #if 0
709 #include <linux/mtd/nand_ids.h>
710 #include <jffs2/jffs2.h>
711 #endif
712
713 #ifdef CONFIG_OMAP1510
714 void archflashwp(void *archdata, int wp);
715 #endif
716
717 #define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
718
719 #undef NAND_DEBUG
720 #undef PSYCHO_DEBUG
721
722 /* ****************** WARNING *********************
723 * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
724 * erase (or at least attempt to erase) blocks that are marked
725 * bad. This can be very handy if you are _sure_ that the block
726 * is OK, say because you marked a good block bad to test bad
727 * block handling and you are done testing, or if you have
728 * accidentally marked blocks bad.
729 *
730 * Erasing factory marked bad blocks is a _bad_ idea. If the
731 * erase succeeds there is no reliable way to find them again,
732 * and attempting to program or erase bad blocks can affect
733 * the data in _other_ (good) blocks.
734 */
735 #define ALLOW_ERASE_BAD_DEBUG 0
736
737 #define CONFIG_MTD_NAND_ECC /* enable ECC */
738 #define CONFIG_MTD_NAND_ECC_JFFS2
739
740 /* bits for nand_legacy_rw() `cmd'; or together as needed */
741 #define NANDRW_READ 0x01
742 #define NANDRW_WRITE 0x00
743 #define NANDRW_JFFS2 0x02
744 #define NANDRW_JFFS2_SKIP 0x04
745
746 /*
747 * Imports from nand_legacy.c
748 */
749 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
750 extern int curr_device;
751 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
752 size_t len, int clean);
753 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
754 size_t len, size_t *retlen, u_char *buf);
755 extern void nand_print(struct nand_chip *nand);
756 extern void nand_print_bad(struct nand_chip *nand);
757 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
758 size_t len, size_t *retlen, u_char *buf);
759 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
760 size_t len, size_t *retlen, const u_char *buf);
761
762
763 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
764 {
765 int rcode = 0;
766
767 switch (argc) {
768 case 0:
769 case 1:
770 printf ("Usage:\n%s\n", cmdtp->usage);
771 return 1;
772 case 2:
773 if (strcmp (argv[1], "info") == 0) {
774 int i;
775
776 putc ('\n');
777
778 for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
779 if (nand_dev_desc[i].ChipID ==
780 NAND_ChipID_UNKNOWN)
781 continue; /* list only known devices */
782 printf ("Device %d: ", i);
783 nand_print (&nand_dev_desc[i]);
784 }
785 return 0;
786
787 } else if (strcmp (argv[1], "device") == 0) {
788 if ((curr_device < 0)
789 || (curr_device >= CFG_MAX_NAND_DEVICE)) {
790 puts ("\nno devices available\n");
791 return 1;
792 }
793 printf ("\nDevice %d: ", curr_device);
794 nand_print (&nand_dev_desc[curr_device]);
795 return 0;
796
797 } else if (strcmp (argv[1], "bad") == 0) {
798 if ((curr_device < 0)
799 || (curr_device >= CFG_MAX_NAND_DEVICE)) {
800 puts ("\nno devices available\n");
801 return 1;
802 }
803 printf ("\nDevice %d bad blocks:\n", curr_device);
804 nand_print_bad (&nand_dev_desc[curr_device]);
805 return 0;
806
807 }
808 printf ("Usage:\n%s\n", cmdtp->usage);
809 return 1;
810 case 3:
811 if (strcmp (argv[1], "device") == 0) {
812 int dev = (int) simple_strtoul (argv[2], NULL, 10);
813
814 printf ("\nDevice %d: ", dev);
815 if (dev >= CFG_MAX_NAND_DEVICE) {
816 puts ("unknown device\n");
817 return 1;
818 }
819 nand_print (&nand_dev_desc[dev]);
820 /*nand_print (dev); */
821
822 if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
823 return 1;
824 }
825
826 curr_device = dev;
827
828 puts ("... is now current device\n");
829
830 return 0;
831 } else if (strcmp (argv[1], "erase") == 0
832 && strcmp (argv[2], "clean") == 0) {
833 struct nand_chip *nand = &nand_dev_desc[curr_device];
834 ulong off = 0;
835 ulong size = nand->totlen;
836 int ret;
837
838 printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
839
840 ret = nand_legacy_erase (nand, off, size, 1);
841
842 printf ("%s\n", ret ? "ERROR" : "OK");
843
844 return ret;
845 }
846
847 printf ("Usage:\n%s\n", cmdtp->usage);
848 return 1;
849 default:
850 /* at least 4 args */
851
852 if (strncmp (argv[1], "read", 4) == 0 ||
853 strncmp (argv[1], "write", 5) == 0) {
854 ulong addr = simple_strtoul (argv[2], NULL, 16);
855 off_t off = simple_strtoul (argv[3], NULL, 16);
856 size_t size = simple_strtoul (argv[4], NULL, 16);
857 int cmd = (strncmp (argv[1], "read", 4) == 0) ?
858 NANDRW_READ : NANDRW_WRITE;
859 size_t total;
860 int ret;
861 char *cmdtail = strchr (argv[1], '.');
862
863 if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
864 /* read out-of-band data */
865 if (cmd & NANDRW_READ) {
866 ret = nand_read_oob (nand_dev_desc + curr_device,
867 off, size, &total,
868 (u_char *) addr);
869 } else {
870 ret = nand_write_oob (nand_dev_desc + curr_device,
871 off, size, &total,
872 (u_char *) addr);
873 }
874 return ret;
875 } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
876 cmd |= NANDRW_JFFS2; /* skip bad blocks */
877 else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
878 cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */
879 if (cmd & NANDRW_READ)
880 cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */
881 }
882 #ifdef SXNI855T
883 /* need ".e" same as ".j" for compatibility with older units */
884 else if (cmdtail && !strcmp (cmdtail, ".e"))
885 cmd |= NANDRW_JFFS2; /* skip bad blocks */
886 #endif
887 #ifdef CFG_NAND_SKIP_BAD_DOT_I
888 /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
889 /* ".i" for image -> read skips bad block (no 0xff) */
890 else if (cmdtail && !strcmp (cmdtail, ".i")) {
891 cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */
892 if (cmd & NANDRW_READ)
893 cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */
894 }
895 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
896 else if (cmdtail) {
897 printf ("Usage:\n%s\n", cmdtp->usage);
898 return 1;
899 }
900
901 printf ("\nNAND %s: device %d offset %ld, size %lu ...\n",
902 (cmd & NANDRW_READ) ? "read" : "write",
903 curr_device, off, (ulong)size);
904
905 ret = nand_legacy_rw (nand_dev_desc + curr_device,
906 cmd, off, size,
907 &total, (u_char *) addr);
908
909 printf (" %d bytes %s: %s\n", total,
910 (cmd & NANDRW_READ) ? "read" : "written",
911 ret ? "ERROR" : "OK");
912
913 return ret;
914 } else if (strcmp (argv[1], "erase") == 0 &&
915 (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
916 int clean = argc == 5;
917 ulong off =
918 simple_strtoul (argv[2 + clean], NULL, 16);
919 ulong size =
920 simple_strtoul (argv[3 + clean], NULL, 16);
921 int ret;
922
923 printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
924 curr_device, off, size);
925
926 ret = nand_legacy_erase (nand_dev_desc + curr_device,
927 off, size, clean);
928
929 printf ("%s\n", ret ? "ERROR" : "OK");
930
931 return ret;
932 } else {
933 printf ("Usage:\n%s\n", cmdtp->usage);
934 rcode = 1;
935 }
936
937 return rcode;
938 }
939 }
940
941 U_BOOT_CMD(
942 nand, 5, 1, do_nand,
943 "nand - legacy NAND sub-system\n",
944 "info - show available NAND devices\n"
945 "nand device [dev] - show or set current device\n"
946 "nand read[.jffs2[s]] addr off size\n"
947 "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
948 " at offset `off' to/from memory address `addr'\n"
949 "nand erase [clean] [off size] - erase `size' bytes from\n"
950 " offset `off' (entire device if not specified)\n"
951 "nand bad - show bad blocks\n"
952 "nand read.oob addr off size - read out-of-band data\n"
953 "nand write.oob addr off size - read out-of-band data\n"
954 );
955
956 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
957 {
958 char *boot_device = NULL;
959 char *ep;
960 int dev;
961 ulong cnt;
962 ulong addr;
963 ulong offset = 0;
964 image_header_t *hdr;
965 int rcode = 0;
966 #if defined(CONFIG_FIT)
967 const void *fit_hdr = NULL;
968 #endif
969
970 show_boot_progress (52);
971 switch (argc) {
972 case 1:
973 addr = CFG_LOAD_ADDR;
974 boot_device = getenv ("bootdevice");
975 break;
976 case 2:
977 addr = simple_strtoul(argv[1], NULL, 16);
978 boot_device = getenv ("bootdevice");
979 break;
980 case 3:
981 addr = simple_strtoul(argv[1], NULL, 16);
982 boot_device = argv[2];
983 break;
984 case 4:
985 addr = simple_strtoul(argv[1], NULL, 16);
986 boot_device = argv[2];
987 offset = simple_strtoul(argv[3], NULL, 16);
988 break;
989 default:
990 printf ("Usage:\n%s\n", cmdtp->usage);
991 show_boot_progress (-53);
992 return 1;
993 }
994
995 show_boot_progress (53);
996 if (!boot_device) {
997 puts ("\n** No boot device **\n");
998 show_boot_progress (-54);
999 return 1;
1000 }
1001 show_boot_progress (54);
1002
1003 dev = simple_strtoul(boot_device, &ep, 16);
1004
1005 if ((dev >= CFG_MAX_NAND_DEVICE) ||
1006 (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
1007 printf ("\n** Device %d not available\n", dev);
1008 show_boot_progress (-55);
1009 return 1;
1010 }
1011 show_boot_progress (55);
1012
1013 printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
1014 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
1015 offset);
1016
1017 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
1018 SECTORSIZE, NULL, (u_char *)addr)) {
1019 printf ("** Read error on %d\n", dev);
1020 show_boot_progress (-56);
1021 return 1;
1022 }
1023 show_boot_progress (56);
1024
1025 switch (genimg_get_format ((void *)addr)) {
1026 case IMAGE_FORMAT_LEGACY:
1027 hdr = (image_header_t *)addr;
1028 image_print_contents (hdr);
1029
1030 cnt = image_get_image_size (hdr);
1031 cnt -= SECTORSIZE;
1032 break;
1033 #if defined(CONFIG_FIT)
1034 case IMAGE_FORMAT_FIT:
1035 fit_hdr = (const void *)addr;
1036 puts ("Fit image detected...\n");
1037
1038 cnt = fit_get_size (fit_hdr);
1039 break;
1040 #endif
1041 default:
1042 show_boot_progress (-57);
1043 puts ("** Unknown image type\n");
1044 return 1;
1045 }
1046 show_boot_progress (57);
1047
1048 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
1049 offset + SECTORSIZE, cnt, NULL,
1050 (u_char *)(addr+SECTORSIZE))) {
1051 printf ("** Read error on %d\n", dev);
1052 show_boot_progress (-58);
1053 return 1;
1054 }
1055 show_boot_progress (58);
1056
1057 #if defined(CONFIG_FIT)
1058 /* This cannot be done earlier, we need complete FIT image in RAM first */
1059 if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
1060 if (!fit_check_format (fit_hdr)) {
1061 show_boot_progress (-150);
1062 puts ("** Bad FIT image format\n");
1063 return 1;
1064 }
1065 show_boot_progress (151);
1066 fit_print_contents (fit_hdr);
1067 }
1068 #endif
1069
1070 /* Loading ok, update default load address */
1071
1072 load_addr = addr;
1073
1074 /* Check if we should attempt an auto-start */
1075 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
1076 char *local_args[2];
1077 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
1078
1079 local_args[0] = argv[0];
1080 local_args[1] = NULL;
1081
1082 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
1083
1084 do_bootm (cmdtp, 0, 1, local_args);
1085 rcode = 1;
1086 }
1087 return rcode;
1088 }
1089
1090 U_BOOT_CMD(
1091 nboot, 4, 1, do_nandboot,
1092 "nboot - boot from NAND device\n",
1093 "loadAddr dev\n"
1094 );
1095
1096 #endif
1097
1098 #endif /* CFG_NAND_LEGACY */
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