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[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
22 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
23
24 #include <command.h>
25 #include <watchdog.h>
26 #include <malloc.h>
27 #include <asm/byteorder.h>
28
29 #ifdef CONFIG_SHOW_BOOT_PROGRESS
30 # include <status_led.h>
31 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
32 #else
33 # define SHOW_BOOT_PROGRESS(arg)
34 #endif
35
36 #include <jffs2/jffs2.h>
37 #include <nand.h>
38
39 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
40
41 /* parition handling routines */
42 int mtdparts_init(void);
43 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
44 int find_dev_and_part(const char *id, struct mtd_device **dev,
45 u8 *part_num, struct part_info **part);
46 #endif
47
48 extern nand_info_t nand_info[]; /* info for NAND chips */
49
50 static int nand_dump_oob(nand_info_t *nand, ulong off)
51 {
52 return 0;
53 }
54
55 static int nand_dump(nand_info_t *nand, ulong off)
56 {
57 int i;
58 u_char *buf, *p;
59
60 buf = malloc(nand->oobblock + nand->oobsize);
61 if (!buf) {
62 puts("No memory for page buffer\n");
63 return 1;
64 }
65 off &= ~(nand->oobblock - 1);
66 i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize);
67 if (i < 0) {
68 printf("Error (%d) reading page %08x\n", i, off);
69 free(buf);
70 return 1;
71 }
72 printf("Page %08x dump:\n", off);
73 i = nand->oobblock >> 4; p = buf;
74 while (i--) {
75 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x"
76 " %02x %02x %02x %02x %02x %02x %02x %02x\n",
77 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
78 p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
79 p += 16;
80 }
81 puts("OOB:\n");
82 i = nand->oobsize >> 3;
83 while (i--) {
84 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
85 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
86 p += 8;
87 }
88 free(buf);
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, ulong *size)
105 {
106 int idx = nand_curr_device;
107 #if (CONFIG_COMMANDS & CFG_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], 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], 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 (CONFIG_COMMANDS & CFG_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%x, 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;
169 ulong addr, off, size;
170 char *cmd, *s;
171 nand_info_t *nand;
172 int quiet = 0;
173 const char *quiet_str = getenv("quiet");
174
175 /* at least two arguments please */
176 if (argc < 2)
177 goto usage;
178
179 if (quiet_str)
180 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
181
182 cmd = argv[1];
183
184 if (strcmp(cmd, "info") == 0) {
185
186 putc('\n');
187 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
188 if (nand_info[i].name)
189 printf("Device %d: %s, sector size %lu KiB\n",
190 i, nand_info[i].name,
191 nand_info[i].erasesize >> 10);
192 }
193 return 0;
194 }
195
196 if (strcmp(cmd, "device") == 0) {
197
198 if (argc < 3) {
199 if ((nand_curr_device < 0) ||
200 (nand_curr_device >= CFG_MAX_NAND_DEVICE))
201 puts("\nno devices available\n");
202 else
203 printf("\nDevice %d: %s\n", nand_curr_device,
204 nand_info[nand_curr_device].name);
205 return 0;
206 }
207 dev = (int)simple_strtoul(argv[2], NULL, 10);
208 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
209 puts("No such device\n");
210 return 1;
211 }
212 printf("Device %d: %s", dev, nand_info[dev].name);
213 puts("... is now current device\n");
214 nand_curr_device = dev;
215
216 #ifdef CFG_NAND_SELECT_DEVICE
217 /*
218 * Select the chip in the board/cpu specific driver
219 */
220 board_nand_select_device(nand_info[dev].priv, dev);
221 #endif
222
223 return 0;
224 }
225
226 if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
227 strncmp(cmd, "dump", 4) != 0 &&
228 strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
229 strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
230 strcmp(cmd, "biterr") != 0 &&
231 strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
232 goto usage;
233
234 /* the following commands operate on the current device */
235 if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
236 !nand_info[nand_curr_device].name) {
237 puts("\nno devices available\n");
238 return 1;
239 }
240 nand = &nand_info[nand_curr_device];
241
242 if (strcmp(cmd, "bad") == 0) {
243 printf("\nDevice %d bad blocks:\n", nand_curr_device);
244 for (off = 0; off < nand->size; off += nand->erasesize)
245 if (nand_block_isbad(nand, off))
246 printf(" %08x\n", off);
247 return 0;
248 }
249
250 /*
251 * Syntax is:
252 * 0 1 2 3 4
253 * nand erase [clean] [off size]
254 */
255 if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
256 nand_erase_options_t opts;
257 /* "clean" at index 2 means request to write cleanmarker */
258 int clean = argc > 2 && !strcmp("clean", argv[2]);
259 int o = clean ? 3 : 2;
260 int scrub = !strcmp(cmd, "scrub");
261
262 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
263 /* skip first two or three arguments, look for offset and size */
264 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
265 return 1;
266
267 memset(&opts, 0, sizeof(opts));
268 opts.offset = off;
269 opts.length = size;
270 opts.jffs2 = clean;
271 opts.quiet = quiet;
272
273 if (scrub) {
274 puts("Warning: "
275 "scrub option will erase all factory set "
276 "bad blocks!\n"
277 " "
278 "There is no reliable way to recover them.\n"
279 " "
280 "Use this command only for testing purposes "
281 "if you\n"
282 " "
283 "are sure of what you are doing!\n"
284 "\nReally scrub this NAND flash? <y/N>\n");
285
286 if (getc() == 'y' && getc() == '\r') {
287 opts.scrub = 1;
288 } else {
289 puts("scrub aborted\n");
290 return -1;
291 }
292 }
293 ret = nand_erase_opts(nand, &opts);
294 printf("%s\n", ret ? "ERROR" : "OK");
295
296 return ret == 0 ? 0 : 1;
297 }
298
299 if (strncmp(cmd, "dump", 4) == 0) {
300 if (argc < 3)
301 goto usage;
302
303 s = strchr(cmd, '.');
304 off = (int)simple_strtoul(argv[2], NULL, 16);
305
306 if (s != NULL && strcmp(s, ".oob") == 0)
307 ret = nand_dump_oob(nand, off);
308 else
309 ret = nand_dump(nand, off);
310
311 return ret == 0 ? 1 : 0;
312
313 }
314
315 /* read write */
316 if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
317 int read;
318
319 if (argc < 4)
320 goto usage;
321
322 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
323
324 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
325 printf("\nNAND %s: ", read ? "read" : "write");
326 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
327 return 1;
328
329 s = strchr(cmd, '.');
330 if (s != NULL &&
331 (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
332 if (read) {
333 /* read */
334 nand_read_options_t opts;
335 memset(&opts, 0, sizeof(opts));
336 opts.buffer = (u_char*) addr;
337 opts.length = size;
338 opts.offset = off;
339 opts.quiet = quiet;
340 ret = nand_read_opts(nand, &opts);
341 } else {
342 /* write */
343 nand_write_options_t opts;
344 memset(&opts, 0, sizeof(opts));
345 opts.buffer = (u_char*) addr;
346 opts.length = size;
347 opts.offset = off;
348 /* opts.forcejffs2 = 1; */
349 opts.pad = 1;
350 opts.blockalign = 1;
351 opts.quiet = quiet;
352 ret = nand_write_opts(nand, &opts);
353 }
354 } else {
355 if (read)
356 ret = nand_read(nand, off, &size, (u_char *)addr);
357 else
358 ret = nand_write(nand, off, &size, (u_char *)addr);
359 }
360
361 printf(" %d bytes %s: %s\n", size,
362 read ? "read" : "written", ret ? "ERROR" : "OK");
363
364 return ret == 0 ? 0 : 1;
365 }
366
367 if (strcmp(cmd, "markbad") == 0) {
368 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
369
370 int ret = nand->block_markbad(nand, addr);
371 if (ret == 0) {
372 printf("block 0x%08lx successfully marked as bad\n",
373 (ulong) addr);
374 return 0;
375 } else {
376 printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
377 (ulong) addr, ret);
378 }
379 return 1;
380 }
381 if (strcmp(cmd, "biterr") == 0) {
382 /* todo */
383 return 1;
384 }
385
386 if (strcmp(cmd, "lock") == 0) {
387 int tight = 0;
388 int status = 0;
389 if (argc == 3) {
390 if (!strcmp("tight", argv[2]))
391 tight = 1;
392 if (!strcmp("status", argv[2]))
393 status = 1;
394 }
395
396 if (status) {
397 ulong block_start = 0;
398 ulong off;
399 int last_status = -1;
400
401 struct nand_chip *nand_chip = nand->priv;
402 /* check the WP bit */
403 nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
404 printf("device is %swrite protected\n",
405 (nand_chip->read_byte(nand) & 0x80 ?
406 "NOT " : "" ) );
407
408 for (off = 0; off < nand->size; off += nand->oobblock) {
409 int s = nand_get_lock_status(nand, off);
410
411 /* print message only if status has changed
412 * or at end of chip
413 */
414 if (off == nand->size - nand->oobblock
415 || (s != last_status && off != 0)) {
416
417 printf("%08x - %08x: %8d pages %s%s%s\n",
418 block_start,
419 off-1,
420 (off-block_start)/nand->oobblock,
421 ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
422 ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
423 ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
424 }
425
426 last_status = s;
427 }
428 } else {
429 if (!nand_lock(nand, tight)) {
430 puts("NAND flash successfully locked\n");
431 } else {
432 puts("Error locking NAND flash\n");
433 return 1;
434 }
435 }
436 return 0;
437 }
438
439 if (strcmp(cmd, "unlock") == 0) {
440 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
441 return 1;
442
443 if (!nand_unlock(nand, off, size)) {
444 puts("NAND flash successfully unlocked\n");
445 } else {
446 puts("Error unlocking NAND flash, "
447 "write and erase will probably fail\n");
448 return 1;
449 }
450 return 0;
451 }
452
453 usage:
454 printf("Usage:\n%s\n", cmdtp->usage);
455 return 1;
456 }
457
458 U_BOOT_CMD(nand, 5, 1, do_nand,
459 "nand - NAND sub-system\n",
460 "info - show available NAND devices\n"
461 "nand device [dev] - show or set current device\n"
462 "nand read[.jffs2] - addr off|partition size\n"
463 "nand write[.jffs2] - addr off|partiton size - read/write `size' bytes starting\n"
464 " at offset `off' to/from memory address `addr'\n"
465 "nand erase [clean] [off size] - erase `size' bytes from\n"
466 " offset `off' (entire device if not specified)\n"
467 "nand bad - show bad blocks\n"
468 "nand dump[.oob] off - dump page\n"
469 "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
470 "nand markbad off - mark bad block at offset (UNSAFE)\n"
471 "nand biterr off - make a bit error at offset (UNSAFE)\n"
472 "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
473 "nand unlock [offset] [size] - unlock section\n");
474
475 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
476 ulong offset, ulong addr, char *cmd)
477 {
478 int r;
479 char *ep;
480 ulong cnt;
481 image_header_t *hdr;
482
483 printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
484
485 cnt = nand->oobblock;
486 r = nand_read(nand, offset, &cnt, (u_char *) addr);
487 if (r) {
488 puts("** Read error\n");
489 SHOW_BOOT_PROGRESS(-56);
490 return 1;
491 }
492 SHOW_BOOT_PROGRESS(56);
493
494 hdr = (image_header_t *) addr;
495
496 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
497 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
498 SHOW_BOOT_PROGRESS(-57);
499 return 1;
500 }
501 SHOW_BOOT_PROGRESS(57);
502
503 print_image_hdr(hdr);
504
505 cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
506
507 r = nand_read(nand, offset, &cnt, (u_char *) addr);
508 if (r) {
509 puts("** Read error\n");
510 SHOW_BOOT_PROGRESS(-58);
511 return 1;
512 }
513 SHOW_BOOT_PROGRESS(58);
514
515 /* Loading ok, update default load address */
516
517 load_addr = addr;
518
519 /* Check if we should attempt an auto-start */
520 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
521 char *local_args[2];
522 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
523
524 local_args[0] = cmd;
525 local_args[1] = NULL;
526
527 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
528
529 do_bootm(cmdtp, 0, 1, local_args);
530 return 1;
531 }
532 return 0;
533 }
534
535 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
536 {
537 char *boot_device = NULL;
538 int idx;
539 ulong addr, offset = 0;
540 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
541 struct mtd_device *dev;
542 struct part_info *part;
543 u8 pnum;
544
545 if (argc >= 2) {
546 char *p = (argc == 2) ? argv[1] : argv[2];
547 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
548 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
549 if (dev->id->type != MTD_DEV_TYPE_NAND) {
550 puts("Not a NAND device\n");
551 return 1;
552 }
553 if (argc > 3)
554 goto usage;
555 if (argc == 3)
556 addr = simple_strtoul(argv[2], NULL, 16);
557 else
558 addr = CFG_LOAD_ADDR;
559 return nand_load_image(cmdtp, &nand_info[dev->id->num],
560 part->offset, addr, argv[0]);
561 }
562 }
563 #endif
564
565 SHOW_BOOT_PROGRESS(52);
566 switch (argc) {
567 case 1:
568 addr = CFG_LOAD_ADDR;
569 boot_device = getenv("bootdevice");
570 break;
571 case 2:
572 addr = simple_strtoul(argv[1], NULL, 16);
573 boot_device = getenv("bootdevice");
574 break;
575 case 3:
576 addr = simple_strtoul(argv[1], NULL, 16);
577 boot_device = argv[2];
578 break;
579 case 4:
580 addr = simple_strtoul(argv[1], NULL, 16);
581 boot_device = argv[2];
582 offset = simple_strtoul(argv[3], NULL, 16);
583 break;
584 default:
585 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
586 usage:
587 #endif
588 printf("Usage:\n%s\n", cmdtp->usage);
589 SHOW_BOOT_PROGRESS(-53);
590 return 1;
591 }
592
593 SHOW_BOOT_PROGRESS(53);
594 if (!boot_device) {
595 puts("\n** No boot device **\n");
596 SHOW_BOOT_PROGRESS(-54);
597 return 1;
598 }
599 SHOW_BOOT_PROGRESS(54);
600
601 idx = simple_strtoul(boot_device, NULL, 16);
602
603 if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
604 printf("\n** Device %d not available\n", idx);
605 SHOW_BOOT_PROGRESS(-55);
606 return 1;
607 }
608 SHOW_BOOT_PROGRESS(55);
609
610 return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
611 }
612
613 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
614 "nboot - boot from NAND device\n",
615 "[partition] | [[[loadAddr] dev] offset]\n");
616
617 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
618
619 #else /* CFG_NAND_LEGACY */
620 /*
621 *
622 * Legacy NAND support - to be phased out
623 *
624 */
625 #include <command.h>
626 #include <malloc.h>
627 #include <asm/io.h>
628 #include <watchdog.h>
629
630 #ifdef CONFIG_SHOW_BOOT_PROGRESS
631 # include <status_led.h>
632 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
633 #else
634 # define SHOW_BOOT_PROGRESS(arg)
635 #endif
636
637 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
638 #include <linux/mtd/nand_legacy.h>
639 #if 0
640 #include <linux/mtd/nand_ids.h>
641 #include <jffs2/jffs2.h>
642 #endif
643
644 #ifdef CONFIG_OMAP1510
645 void archflashwp(void *archdata, int wp);
646 #endif
647
648 #define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
649
650 #undef NAND_DEBUG
651 #undef PSYCHO_DEBUG
652
653 /* ****************** WARNING *********************
654 * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
655 * erase (or at least attempt to erase) blocks that are marked
656 * bad. This can be very handy if you are _sure_ that the block
657 * is OK, say because you marked a good block bad to test bad
658 * block handling and you are done testing, or if you have
659 * accidentally marked blocks bad.
660 *
661 * Erasing factory marked bad blocks is a _bad_ idea. If the
662 * erase succeeds there is no reliable way to find them again,
663 * and attempting to program or erase bad blocks can affect
664 * the data in _other_ (good) blocks.
665 */
666 #define ALLOW_ERASE_BAD_DEBUG 0
667
668 #define CONFIG_MTD_NAND_ECC /* enable ECC */
669 #define CONFIG_MTD_NAND_ECC_JFFS2
670
671 /* bits for nand_legacy_rw() `cmd'; or together as needed */
672 #define NANDRW_READ 0x01
673 #define NANDRW_WRITE 0x00
674 #define NANDRW_JFFS2 0x02
675 #define NANDRW_JFFS2_SKIP 0x04
676
677 /*
678 * Imports from nand_legacy.c
679 */
680 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
681 extern int curr_device;
682 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
683 size_t len, int clean);
684 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
685 size_t len, size_t *retlen, u_char *buf);
686 extern void nand_print(struct nand_chip *nand);
687 extern void nand_print_bad(struct nand_chip *nand);
688 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
689 size_t len, size_t *retlen, u_char *buf);
690 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
691 size_t len, size_t *retlen, const u_char *buf);
692
693
694 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
695 {
696 int rcode = 0;
697
698 switch (argc) {
699 case 0:
700 case 1:
701 printf ("Usage:\n%s\n", cmdtp->usage);
702 return 1;
703 case 2:
704 if (strcmp (argv[1], "info") == 0) {
705 int i;
706
707 putc ('\n');
708
709 for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
710 if (nand_dev_desc[i].ChipID ==
711 NAND_ChipID_UNKNOWN)
712 continue; /* list only known devices */
713 printf ("Device %d: ", i);
714 nand_print (&nand_dev_desc[i]);
715 }
716 return 0;
717
718 } else if (strcmp (argv[1], "device") == 0) {
719 if ((curr_device < 0)
720 || (curr_device >= CFG_MAX_NAND_DEVICE)) {
721 puts ("\nno devices available\n");
722 return 1;
723 }
724 printf ("\nDevice %d: ", curr_device);
725 nand_print (&nand_dev_desc[curr_device]);
726 return 0;
727
728 } else if (strcmp (argv[1], "bad") == 0) {
729 if ((curr_device < 0)
730 || (curr_device >= CFG_MAX_NAND_DEVICE)) {
731 puts ("\nno devices available\n");
732 return 1;
733 }
734 printf ("\nDevice %d bad blocks:\n", curr_device);
735 nand_print_bad (&nand_dev_desc[curr_device]);
736 return 0;
737
738 }
739 printf ("Usage:\n%s\n", cmdtp->usage);
740 return 1;
741 case 3:
742 if (strcmp (argv[1], "device") == 0) {
743 int dev = (int) simple_strtoul (argv[2], NULL, 10);
744
745 printf ("\nDevice %d: ", dev);
746 if (dev >= CFG_MAX_NAND_DEVICE) {
747 puts ("unknown device\n");
748 return 1;
749 }
750 nand_print (&nand_dev_desc[dev]);
751 /*nand_print (dev); */
752
753 if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
754 return 1;
755 }
756
757 curr_device = dev;
758
759 puts ("... is now current device\n");
760
761 return 0;
762 } else if (strcmp (argv[1], "erase") == 0
763 && strcmp (argv[2], "clean") == 0) {
764 struct nand_chip *nand = &nand_dev_desc[curr_device];
765 ulong off = 0;
766 ulong size = nand->totlen;
767 int ret;
768
769 printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
770
771 ret = nand_legacy_erase (nand, off, size, 1);
772
773 printf ("%s\n", ret ? "ERROR" : "OK");
774
775 return ret;
776 }
777
778 printf ("Usage:\n%s\n", cmdtp->usage);
779 return 1;
780 default:
781 /* at least 4 args */
782
783 if (strncmp (argv[1], "read", 4) == 0 ||
784 strncmp (argv[1], "write", 5) == 0) {
785 ulong addr = simple_strtoul (argv[2], NULL, 16);
786 ulong off = simple_strtoul (argv[3], NULL, 16);
787 ulong size = simple_strtoul (argv[4], NULL, 16);
788 int cmd = (strncmp (argv[1], "read", 4) == 0) ?
789 NANDRW_READ : NANDRW_WRITE;
790 int ret, total;
791 char *cmdtail = strchr (argv[1], '.');
792
793 if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
794 /* read out-of-band data */
795 if (cmd & NANDRW_READ) {
796 ret = nand_read_oob (nand_dev_desc + curr_device,
797 off, size, (size_t *) & total,
798 (u_char *) addr);
799 } else {
800 ret = nand_write_oob (nand_dev_desc + curr_device,
801 off, size, (size_t *) & total,
802 (u_char *) addr);
803 }
804 return ret;
805 } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
806 cmd |= NANDRW_JFFS2; /* skip bad blocks */
807 else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
808 cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */
809 if (cmd & NANDRW_READ)
810 cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */
811 }
812 #ifdef SXNI855T
813 /* need ".e" same as ".j" for compatibility with older units */
814 else if (cmdtail && !strcmp (cmdtail, ".e"))
815 cmd |= NANDRW_JFFS2; /* skip bad blocks */
816 #endif
817 #ifdef CFG_NAND_SKIP_BAD_DOT_I
818 /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
819 /* ".i" for image -> read skips bad block (no 0xff) */
820 else if (cmdtail && !strcmp (cmdtail, ".i")) {
821 cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */
822 if (cmd & NANDRW_READ)
823 cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */
824 }
825 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
826 else if (cmdtail) {
827 printf ("Usage:\n%s\n", cmdtp->usage);
828 return 1;
829 }
830
831 printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
832 (cmd & NANDRW_READ) ? "read" : "write",
833 curr_device, off, size);
834
835 ret = nand_legacy_rw (nand_dev_desc + curr_device,
836 cmd, off, size,
837 (size_t *) & total,
838 (u_char *) addr);
839
840 printf (" %d bytes %s: %s\n", total,
841 (cmd & NANDRW_READ) ? "read" : "written",
842 ret ? "ERROR" : "OK");
843
844 return ret;
845 } else if (strcmp (argv[1], "erase") == 0 &&
846 (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
847 int clean = argc == 5;
848 ulong off =
849 simple_strtoul (argv[2 + clean], NULL, 16);
850 ulong size =
851 simple_strtoul (argv[3 + clean], NULL, 16);
852 int ret;
853
854 printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
855 curr_device, off, size);
856
857 ret = nand_legacy_erase (nand_dev_desc + curr_device,
858 off, size, clean);
859
860 printf ("%s\n", ret ? "ERROR" : "OK");
861
862 return ret;
863 } else {
864 printf ("Usage:\n%s\n", cmdtp->usage);
865 rcode = 1;
866 }
867
868 return rcode;
869 }
870 }
871
872 U_BOOT_CMD(
873 nand, 5, 1, do_nand,
874 "nand - legacy NAND sub-system\n",
875 "info - show available NAND devices\n"
876 "nand device [dev] - show or set current device\n"
877 "nand read[.jffs2[s]] addr off size\n"
878 "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
879 " at offset `off' to/from memory address `addr'\n"
880 "nand erase [clean] [off size] - erase `size' bytes from\n"
881 " offset `off' (entire device if not specified)\n"
882 "nand bad - show bad blocks\n"
883 "nand read.oob addr off size - read out-of-band data\n"
884 "nand write.oob addr off size - read out-of-band data\n"
885 );
886
887 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
888 {
889 char *boot_device = NULL;
890 char *ep;
891 int dev;
892 ulong cnt;
893 ulong addr;
894 ulong offset = 0;
895 image_header_t *hdr;
896 int rcode = 0;
897 SHOW_BOOT_PROGRESS(52);
898 switch (argc) {
899 case 1:
900 addr = CFG_LOAD_ADDR;
901 boot_device = getenv ("bootdevice");
902 break;
903 case 2:
904 addr = simple_strtoul(argv[1], NULL, 16);
905 boot_device = getenv ("bootdevice");
906 break;
907 case 3:
908 addr = simple_strtoul(argv[1], NULL, 16);
909 boot_device = argv[2];
910 break;
911 case 4:
912 addr = simple_strtoul(argv[1], NULL, 16);
913 boot_device = argv[2];
914 offset = simple_strtoul(argv[3], NULL, 16);
915 break;
916 default:
917 printf ("Usage:\n%s\n", cmdtp->usage);
918 SHOW_BOOT_PROGRESS (-53);
919 return 1;
920 }
921
922 SHOW_BOOT_PROGRESS(53);
923 if (!boot_device) {
924 puts ("\n** No boot device **\n");
925 SHOW_BOOT_PROGRESS (-54);
926 return 1;
927 }
928 SHOW_BOOT_PROGRESS(54);
929
930 dev = simple_strtoul(boot_device, &ep, 16);
931
932 if ((dev >= CFG_MAX_NAND_DEVICE) ||
933 (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
934 printf ("\n** Device %d not available\n", dev);
935 SHOW_BOOT_PROGRESS (-55);
936 return 1;
937 }
938 SHOW_BOOT_PROGRESS(55);
939
940 printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
941 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
942 offset);
943
944 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
945 SECTORSIZE, NULL, (u_char *)addr)) {
946 printf ("** Read error on %d\n", dev);
947 SHOW_BOOT_PROGRESS (-56);
948 return 1;
949 }
950 SHOW_BOOT_PROGRESS(56);
951
952 hdr = (image_header_t *)addr;
953
954 if (ntohl(hdr->ih_magic) == IH_MAGIC) {
955
956 print_image_hdr (hdr);
957
958 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
959 cnt -= SECTORSIZE;
960 } else {
961 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
962 SHOW_BOOT_PROGRESS (-57);
963 return 1;
964 }
965 SHOW_BOOT_PROGRESS(57);
966
967 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
968 offset + SECTORSIZE, cnt, NULL,
969 (u_char *)(addr+SECTORSIZE))) {
970 printf ("** Read error on %d\n", dev);
971 SHOW_BOOT_PROGRESS (-58);
972 return 1;
973 }
974 SHOW_BOOT_PROGRESS(58);
975
976 /* Loading ok, update default load address */
977
978 load_addr = addr;
979
980 /* Check if we should attempt an auto-start */
981 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
982 char *local_args[2];
983 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
984
985 local_args[0] = argv[0];
986 local_args[1] = NULL;
987
988 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
989
990 do_bootm (cmdtp, 0, 1, local_args);
991 rcode = 1;
992 }
993 return rcode;
994 }
995
996 U_BOOT_CMD(
997 nboot, 4, 1, do_nandboot,
998 "nboot - boot from NAND device\n",
999 "loadAddr dev\n"
1000 );
1001
1002 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
1003
1004 #endif /* CFG_NAND_LEGACY */
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