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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  * Ported 'dynenv' to 'nand env.oob' command
8  * (C) 2010 Nanometrics, Inc.
9  * 'dynenv' -- Dynamic environment offset in NAND OOB
10  * (C) Copyright 2006-2007 OpenMoko, Inc.
11  * Added 16-bit nand support
12  * (C) 2004 Texas Instruments
13  *
14  * Copyright 2010 Freescale Semiconductor
15  * The portions of this file whose copyright is held by Freescale and which
16  * are not considered a derived work of GPL v2-only code may be distributed
17  * and/or modified under the terms of the GNU General Public License as
18  * published by the Free Software Foundation; either version 2 of the
19  * License, or (at your option) any later version.
20  */
21
22 #include <common.h>
23 #include <linux/mtd/mtd.h>
24 #include <command.h>
25 #include <watchdog.h>
26 #include <malloc.h>
27 #include <asm/byteorder.h>
28 #include <jffs2/jffs2.h>
29 #include <nand.h>
30
31 #if defined(CONFIG_CMD_MTDPARTS)
32
33 /* partition handling routines */
34 int mtdparts_init(void);
35 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
36 int find_dev_and_part(const char *id, struct mtd_device **dev,
37                       u8 *part_num, struct part_info **part);
38 #endif
39
40 static int nand_dump(nand_info_t *nand, ulong off, int only_oob, int repeat)
41 {
42         int i;
43         u_char *datbuf, *oobbuf, *p;
44         static loff_t last;
45
46         if (repeat)
47                 off = last + nand->writesize;
48
49         last = off;
50
51         datbuf = malloc(nand->writesize + nand->oobsize);
52         oobbuf = malloc(nand->oobsize);
53         if (!datbuf || !oobbuf) {
54                 puts("No memory for page buffer\n");
55                 return 1;
56         }
57         off &= ~(nand->writesize - 1);
58         loff_t addr = (loff_t) off;
59         struct mtd_oob_ops ops;
60         memset(&ops, 0, sizeof(ops));
61         ops.datbuf = datbuf;
62         ops.oobbuf = oobbuf; /* must exist, but oob data will be appended to ops.datbuf */
63         ops.len = nand->writesize;
64         ops.ooblen = nand->oobsize;
65         ops.mode = MTD_OOB_RAW;
66         i = nand->read_oob(nand, addr, &ops);
67         if (i < 0) {
68                 printf("Error (%d) reading page %08lx\n", i, off);
69                 free(datbuf);
70                 free(oobbuf);
71                 return 1;
72         }
73         printf("Page %08lx dump:\n", off);
74         i = nand->writesize >> 4;
75         p = datbuf;
76
77         while (i--) {
78                 if (!only_oob)
79                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
80                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
81                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
82                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
83                                p[15]);
84                 p += 16;
85         }
86         puts("OOB:\n");
87         i = nand->oobsize >> 3;
88         while (i--) {
89                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
90                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
91                 p += 8;
92         }
93         free(datbuf);
94         free(oobbuf);
95
96         return 0;
97 }
98
99 /* ------------------------------------------------------------------------- */
100
101 static int set_dev(int dev)
102 {
103         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
104             !nand_info[dev].name) {
105                 puts("No such device\n");
106                 return -1;
107         }
108
109         if (nand_curr_device == dev)
110                 return 0;
111
112         printf("Device %d: %s", dev, nand_info[dev].name);
113         puts("... is now current device\n");
114         nand_curr_device = dev;
115
116 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
117         board_nand_select_device(nand_info[dev].priv, dev);
118 #endif
119
120         return 0;
121 }
122
123 static inline int str2off(const char *p, loff_t *num)
124 {
125         char *endptr;
126
127         *num = simple_strtoull(p, &endptr, 16);
128         return *p != '\0' && *endptr == '\0';
129 }
130
131 static inline int str2long(const char *p, ulong *num)
132 {
133         char *endptr;
134
135         *num = simple_strtoul(p, &endptr, 16);
136         return *p != '\0' && *endptr == '\0';
137 }
138
139 static int get_part(const char *partname, int *idx, loff_t *off, loff_t *size)
140 {
141 #ifdef CONFIG_CMD_MTDPARTS
142         struct mtd_device *dev;
143         struct part_info *part;
144         u8 pnum;
145         int ret;
146
147         ret = mtdparts_init();
148         if (ret)
149                 return ret;
150
151         ret = find_dev_and_part(partname, &dev, &pnum, &part);
152         if (ret)
153                 return ret;
154
155         if (dev->id->type != MTD_DEV_TYPE_NAND) {
156                 puts("not a NAND device\n");
157                 return -1;
158         }
159
160         *off = part->offset;
161         *size = part->size;
162         *idx = dev->id->num;
163
164         ret = set_dev(*idx);
165         if (ret)
166                 return ret;
167
168         return 0;
169 #else
170         puts("offset is not a number\n");
171         return -1;
172 #endif
173 }
174
175 static int arg_off(const char *arg, int *idx, loff_t *off, loff_t *maxsize)
176 {
177         if (!str2off(arg, off))
178                 return get_part(arg, idx, off, maxsize);
179
180         if (*off >= nand_info[*idx].size) {
181                 puts("Offset exceeds device limit\n");
182                 return -1;
183         }
184
185         *maxsize = nand_info[*idx].size - *off;
186         return 0;
187 }
188
189 static int arg_off_size(int argc, char *const argv[], int *idx,
190                         loff_t *off, loff_t *size)
191 {
192         int ret;
193         loff_t maxsize;
194
195         if (argc == 0) {
196                 *off = 0;
197                 *size = nand_info[*idx].size;
198                 goto print;
199         }
200
201         ret = arg_off(argv[0], idx, off, &maxsize);
202         if (ret)
203                 return ret;
204
205         if (argc == 1) {
206                 *size = maxsize;
207                 goto print;
208         }
209
210         if (!str2off(argv[1], size)) {
211                 printf("'%s' is not a number\n", argv[1]);
212                 return -1;
213         }
214
215         if (*size > maxsize) {
216                 puts("Size exceeds partition or device limit\n");
217                 return -1;
218         }
219
220 print:
221         printf("device %d ", *idx);
222         if (*size == nand_info[*idx].size)
223                 puts("whole chip\n");
224         else
225                 printf("offset 0x%llx, size 0x%llx\n",
226                        (unsigned long long)*off, (unsigned long long)*size);
227         return 0;
228 }
229
230 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
231 static void print_status(ulong start, ulong end, ulong erasesize, int status)
232 {
233         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
234                 start,
235                 end - 1,
236                 (end - start) / erasesize,
237                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
238                 ((status & NAND_LOCK_STATUS_LOCK) ?  "LOCK " : ""),
239                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
240 }
241
242 static void do_nand_status(nand_info_t *nand)
243 {
244         ulong block_start = 0;
245         ulong off;
246         int last_status = -1;
247
248         struct nand_chip *nand_chip = nand->priv;
249         /* check the WP bit */
250         nand_chip->cmdfunc(nand, NAND_CMD_STATUS, -1, -1);
251         printf("device is %swrite protected\n",
252                 (nand_chip->read_byte(nand) & 0x80 ?
253                 "NOT " : ""));
254
255         for (off = 0; off < nand->size; off += nand->erasesize) {
256                 int s = nand_get_lock_status(nand, off);
257
258                 /* print message only if status has changed */
259                 if (s != last_status && off != 0) {
260                         print_status(block_start, off, nand->erasesize,
261                                         last_status);
262                         block_start = off;
263                 }
264                 last_status = s;
265         }
266         /* Print the last block info */
267         print_status(block_start, off, nand->erasesize, last_status);
268 }
269 #endif
270
271 #ifdef CONFIG_ENV_OFFSET_OOB
272 unsigned long nand_env_oob_offset;
273
274 int do_nand_env_oob(cmd_tbl_t *cmdtp, int argc, char *const argv[])
275 {
276         int ret;
277         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
278         nand_info_t *nand = &nand_info[0];
279         char *cmd = argv[1];
280
281         if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !nand->name) {
282                 puts("no devices available\n");
283                 return 1;
284         }
285
286         set_dev(0);
287
288         if (!strcmp(cmd, "get")) {
289                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
290                 if (ret)
291                         return 1;
292
293                 printf("0x%08lx\n", nand_env_oob_offset);
294         } else if (!strcmp(cmd, "set")) {
295                 loff_t addr;
296                 loff_t maxsize;
297                 struct mtd_oob_ops ops;
298                 int idx = 0;
299
300                 if (argc < 3)
301                         goto usage;
302
303                 if (arg_off(argv[2], &idx, &addr, &maxsize)) {
304                         puts("Offset or partition name expected\n");
305                         return 1;
306                 }
307
308                 if (idx != 0) {
309                         puts("Partition not on first NAND device\n");
310                         return 1;
311                 }
312
313                 if (nand->oobavail < ENV_OFFSET_SIZE) {
314                         printf("Insufficient available OOB bytes:\n"
315                                "%d OOB bytes available but %d required for "
316                                "env.oob support\n",
317                                nand->oobavail, ENV_OFFSET_SIZE);
318                         return 1;
319                 }
320
321                 if ((addr & (nand->erasesize - 1)) != 0) {
322                         printf("Environment offset must be block-aligned\n");
323                         return 1;
324                 }
325
326                 ops.datbuf = NULL;
327                 ops.mode = MTD_OOB_AUTO;
328                 ops.ooboffs = 0;
329                 ops.ooblen = ENV_OFFSET_SIZE;
330                 ops.oobbuf = (void *) oob_buf;
331
332                 oob_buf[0] = ENV_OOB_MARKER;
333                 oob_buf[1] = addr / nand->erasesize;
334
335                 ret = nand->write_oob(nand, ENV_OFFSET_SIZE, &ops);
336                 if (ret) {
337                         printf("Error writing OOB block 0\n");
338                         return ret;
339                 }
340
341                 ret = get_nand_env_oob(nand, &nand_env_oob_offset);
342                 if (ret) {
343                         printf("Error reading env offset in OOB\n");
344                         return ret;
345                 }
346
347                 if (addr != nand_env_oob_offset) {
348                         printf("Verification of env offset in OOB failed: "
349                                "0x%08llx expected but got 0x%08lx\n",
350                                (unsigned long long)addr, nand_env_oob_offset);
351                         return 1;
352                 }
353         } else {
354                 goto usage;
355         }
356
357         return ret;
358
359 usage:
360         return cmd_usage(cmdtp);
361 }
362
363 #endif
364
365 static void nand_print_info(int idx)
366 {
367         nand_info_t *nand = &nand_info[idx];
368         struct nand_chip *chip = nand->priv;
369         printf("Device %d: ", idx);
370         if (chip->numchips > 1)
371                 printf("%dx ", chip->numchips);
372         printf("%s, sector size %u KiB\n",
373                nand->name, nand->erasesize >> 10);
374 }
375
376 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
377 {
378         int i, ret = 0;
379         ulong addr;
380         loff_t off, size;
381         char *cmd, *s;
382         nand_info_t *nand;
383 #ifdef CONFIG_SYS_NAND_QUIET
384         int quiet = CONFIG_SYS_NAND_QUIET;
385 #else
386         int quiet = 0;
387 #endif
388         const char *quiet_str = getenv("quiet");
389         int dev = nand_curr_device;
390         int repeat = flag & CMD_FLAG_REPEAT;
391
392         /* at least two arguments please */
393         if (argc < 2)
394                 goto usage;
395
396         if (quiet_str)
397                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
398
399         cmd = argv[1];
400
401         /* Only "dump" is repeatable. */
402         if (repeat && strcmp(cmd, "dump"))
403                 return 0;
404
405         if (strcmp(cmd, "info") == 0) {
406
407                 putc('\n');
408                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++) {
409                         if (nand_info[i].name)
410                                 nand_print_info(i);
411                 }
412                 return 0;
413         }
414
415         if (strcmp(cmd, "device") == 0) {
416                 if (argc < 3) {
417                         putc('\n');
418                         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
419                                 puts("no devices available\n");
420                         else
421                                 nand_print_info(dev);
422                         return 0;
423                 }
424
425                 dev = (int)simple_strtoul(argv[2], NULL, 10);
426                 set_dev(dev);
427
428                 return 0;
429         }
430
431 #ifdef CONFIG_ENV_OFFSET_OOB
432         /* this command operates only on the first nand device */
433         if (strcmp(cmd, "env.oob") == 0)
434                 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
435 #endif
436
437         /* The following commands operate on the current device, unless
438          * overridden by a partition specifier.  Note that if somehow the
439          * current device is invalid, it will have to be changed to a valid
440          * one before these commands can run, even if a partition specifier
441          * for another device is to be used.
442          */
443         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE ||
444             !nand_info[dev].name) {
445                 puts("\nno devices available\n");
446                 return 1;
447         }
448         nand = &nand_info[dev];
449
450         if (strcmp(cmd, "bad") == 0) {
451                 printf("\nDevice %d bad blocks:\n", dev);
452                 for (off = 0; off < nand->size; off += nand->erasesize)
453                         if (nand_block_isbad(nand, off))
454                                 printf("  %08llx\n", (unsigned long long)off);
455                 return 0;
456         }
457
458         /*
459          * Syntax is:
460          *   0    1     2       3    4
461          *   nand erase [clean] [off size]
462          */
463         if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
464                 nand_erase_options_t opts;
465                 /* "clean" at index 2 means request to write cleanmarker */
466                 int clean = argc > 2 && !strcmp("clean", argv[2]);
467                 int o = clean ? 3 : 2;
468                 int scrub = !strncmp(cmd, "scrub", 5);
469                 int part = 0;
470                 int chip = 0;
471                 int spread = 0;
472                 int args = 2;
473
474                 if (cmd[5] != 0) {
475                         if (!strcmp(&cmd[5], ".spread")) {
476                                 spread = 1;
477                         } else if (!strcmp(&cmd[5], ".part")) {
478                                 part = 1;
479                                 args = 1;
480                         } else if (!strcmp(&cmd[5], ".chip")) {
481                                 chip = 1;
482                                 args = 0;
483                         } else {
484                                 goto usage;
485                         }
486                 }
487
488                 /*
489                  * Don't allow missing arguments to cause full chip/partition
490                  * erases -- easy to do accidentally, e.g. with a misspelled
491                  * variable name.
492                  */
493                 if (argc != o + args)
494                         goto usage;
495
496                 printf("\nNAND %s: ", cmd);
497                 /* skip first two or three arguments, look for offset and size */
498                 if (arg_off_size(argc - o, argv + o, &dev, &off, &size) != 0)
499                         return 1;
500
501                 nand = &nand_info[dev];
502
503                 memset(&opts, 0, sizeof(opts));
504                 opts.offset = off;
505                 opts.length = size;
506                 opts.jffs2  = clean;
507                 opts.quiet  = quiet;
508                 opts.spread = spread;
509
510                 if (scrub) {
511                         puts("Warning: "
512                              "scrub option will erase all factory set "
513                              "bad blocks!\n"
514                              "         "
515                              "There is no reliable way to recover them.\n"
516                              "         "
517                              "Use this command only for testing purposes "
518                              "if you\n"
519                              "         "
520                              "are sure of what you are doing!\n"
521                              "\nReally scrub this NAND flash? <y/N>\n");
522
523                         if (getc() == 'y') {
524                                 puts("y");
525                                 if (getc() == '\r')
526                                         opts.scrub = 1;
527                                 else {
528                                         puts("scrub aborted\n");
529                                         return -1;
530                                 }
531                         } else {
532                                 puts("scrub aborted\n");
533                                 return -1;
534                         }
535                 }
536                 ret = nand_erase_opts(nand, &opts);
537                 printf("%s\n", ret ? "ERROR" : "OK");
538
539                 return ret == 0 ? 0 : 1;
540         }
541
542         if (strncmp(cmd, "dump", 4) == 0) {
543                 if (argc < 3)
544                         goto usage;
545
546                 off = (int)simple_strtoul(argv[2], NULL, 16);
547                 ret = nand_dump(nand, off, !strcmp(&cmd[4], ".oob"), repeat);
548
549                 return ret == 0 ? 1 : 0;
550         }
551
552         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
553                 size_t rwsize;
554                 int read;
555
556                 if (argc < 4)
557                         goto usage;
558
559                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
560
561                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
562                 printf("\nNAND %s: ", read ? "read" : "write");
563                 if (arg_off_size(argc - 3, argv + 3, &dev, &off, &size) != 0)
564                         return 1;
565
566                 nand = &nand_info[dev];
567                 rwsize = size;
568
569                 s = strchr(cmd, '.');
570                 if (!s || !strcmp(s, ".jffs2") ||
571                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
572                         if (read)
573                                 ret = nand_read_skip_bad(nand, off, &rwsize,
574                                                          (u_char *)addr);
575                         else
576                                 ret = nand_write_skip_bad(nand, off, &rwsize,
577                                                           (u_char *)addr, 0);
578 #ifdef CONFIG_CMD_NAND_YAFFS
579                 } else if (!strcmp(s, ".yaffs")) {
580                         if (read) {
581                                 printf("Unknown nand command suffix '%s'.\n", s);
582                                 return 1;
583                         }
584                         ret = nand_write_skip_bad(nand, off, &rwsize, (u_char *)addr, 1);
585 #endif
586                 } else if (!strcmp(s, ".oob")) {
587                         /* out-of-band data */
588                         mtd_oob_ops_t ops = {
589                                 .oobbuf = (u8 *)addr,
590                                 .ooblen = rwsize,
591                                 .mode = MTD_OOB_RAW
592                         };
593
594                         if (read)
595                                 ret = nand->read_oob(nand, off, &ops);
596                         else
597                                 ret = nand->write_oob(nand, off, &ops);
598                 } else {
599                         printf("Unknown nand command suffix '%s'.\n", s);
600                         return 1;
601                 }
602
603                 printf(" %zu bytes %s: %s\n", rwsize,
604                        read ? "read" : "written", ret ? "ERROR" : "OK");
605
606                 return ret == 0 ? 0 : 1;
607         }
608
609         if (strcmp(cmd, "markbad") == 0) {
610                 argc -= 2;
611                 argv += 2;
612
613                 if (argc <= 0)
614                         goto usage;
615
616                 while (argc > 0) {
617                         addr = simple_strtoul(*argv, NULL, 16);
618
619                         if (nand->block_markbad(nand, addr)) {
620                                 printf("block 0x%08lx NOT marked "
621                                         "as bad! ERROR %d\n",
622                                         addr, ret);
623                                 ret = 1;
624                         } else {
625                                 printf("block 0x%08lx successfully "
626                                         "marked as bad\n",
627                                         addr);
628                         }
629                         --argc;
630                         ++argv;
631                 }
632                 return ret;
633         }
634
635         if (strcmp(cmd, "biterr") == 0) {
636                 /* todo */
637                 return 1;
638         }
639
640 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
641         if (strcmp(cmd, "lock") == 0) {
642                 int tight = 0;
643                 int status = 0;
644                 if (argc == 3) {
645                         if (!strcmp("tight", argv[2]))
646                                 tight = 1;
647                         if (!strcmp("status", argv[2]))
648                                 status = 1;
649                 }
650                 if (status) {
651                         do_nand_status(nand);
652                 } else {
653                         if (!nand_lock(nand, tight)) {
654                                 puts("NAND flash successfully locked\n");
655                         } else {
656                                 puts("Error locking NAND flash\n");
657                                 return 1;
658                         }
659                 }
660                 return 0;
661         }
662
663         if (strcmp(cmd, "unlock") == 0) {
664                 if (arg_off_size(argc - 2, argv + 2, &dev, &off, &size) < 0)
665                         return 1;
666
667                 if (!nand_unlock(&nand_info[dev], off, size)) {
668                         puts("NAND flash successfully unlocked\n");
669                 } else {
670                         puts("Error unlocking NAND flash, "
671                              "write and erase will probably fail\n");
672                         return 1;
673                 }
674                 return 0;
675         }
676 #endif
677
678 usage:
679         return cmd_usage(cmdtp);
680 }
681
682 U_BOOT_CMD(
683         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
684         "NAND sub-system",
685         "info - show available NAND devices\n"
686         "nand device [dev] - show or set current device\n"
687         "nand read - addr off|partition size\n"
688         "nand write - addr off|partition size\n"
689         "    read/write 'size' bytes starting at offset 'off'\n"
690         "    to/from memory address 'addr', skipping bad blocks.\n"
691 #ifdef CONFIG_CMD_NAND_YAFFS
692         "nand write.yaffs - addr off|partition size\n"
693         "    write 'size' bytes starting at offset 'off' with yaffs format\n"
694         "    from memory address 'addr', skipping bad blocks.\n"
695 #endif
696         "nand erase[.spread] [clean] [off [size]] - erase 'size' bytes "
697         "from offset 'off'\n"
698         "    With '.spread', erase enough for given file size, otherwise,\n"
699         "    'size' includes skipped bad blocks.\n"
700         "nand erase.part [clean] partition - erase entire mtd partition'\n"
701         "nand erase.chip [clean] - erase entire chip'\n"
702         "nand bad - show bad blocks\n"
703         "nand dump[.oob] off - dump page\n"
704         "nand scrub off size | scrub.part partition | scrub.chip\n"
705         "    really clean NAND erasing bad blocks (UNSAFE)\n"
706         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
707         "nand biterr off - make a bit error at offset (UNSAFE)"
708 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
709         "\n"
710         "nand lock [tight] [status]\n"
711         "    bring nand to lock state or display locked pages\n"
712         "nand unlock [offset] [size] - unlock section"
713 #endif
714 #ifdef CONFIG_ENV_OFFSET_OOB
715         "\n"
716         "nand env.oob - environment offset in OOB of block 0 of"
717         "    first device.\n"
718         "nand env.oob set off|partition - set enviromnent offset\n"
719         "nand env.oob get - get environment offset"
720 #endif
721 );
722
723 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
724                            ulong offset, ulong addr, char *cmd)
725 {
726         int r;
727         char *ep, *s;
728         size_t cnt;
729         image_header_t *hdr;
730 #if defined(CONFIG_FIT)
731         const void *fit_hdr = NULL;
732 #endif
733
734         s = strchr(cmd, '.');
735         if (s != NULL &&
736             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
737                 printf("Unknown nand load suffix '%s'\n", s);
738                 show_boot_progress(-53);
739                 return 1;
740         }
741
742         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
743
744         cnt = nand->writesize;
745         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
746         if (r) {
747                 puts("** Read error\n");
748                 show_boot_progress (-56);
749                 return 1;
750         }
751         show_boot_progress (56);
752
753         switch (genimg_get_format ((void *)addr)) {
754         case IMAGE_FORMAT_LEGACY:
755                 hdr = (image_header_t *)addr;
756
757                 show_boot_progress (57);
758                 image_print_contents (hdr);
759
760                 cnt = image_get_image_size (hdr);
761                 break;
762 #if defined(CONFIG_FIT)
763         case IMAGE_FORMAT_FIT:
764                 fit_hdr = (const void *)addr;
765                 puts ("Fit image detected...\n");
766
767                 cnt = fit_get_size (fit_hdr);
768                 break;
769 #endif
770         default:
771                 show_boot_progress (-57);
772                 puts ("** Unknown image type\n");
773                 return 1;
774         }
775         show_boot_progress (57);
776
777         r = nand_read_skip_bad(nand, offset, &cnt, (u_char *) addr);
778         if (r) {
779                 puts("** Read error\n");
780                 show_boot_progress (-58);
781                 return 1;
782         }
783         show_boot_progress (58);
784
785 #if defined(CONFIG_FIT)
786         /* This cannot be done earlier, we need complete FIT image in RAM first */
787         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
788                 if (!fit_check_format (fit_hdr)) {
789                         show_boot_progress (-150);
790                         puts ("** Bad FIT image format\n");
791                         return 1;
792                 }
793                 show_boot_progress (151);
794                 fit_print_contents (fit_hdr);
795         }
796 #endif
797
798         /* Loading ok, update default load address */
799
800         load_addr = addr;
801
802         /* Check if we should attempt an auto-start */
803         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
804                 char *local_args[2];
805
806                 local_args[0] = cmd;
807                 local_args[1] = NULL;
808
809                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
810
811                 do_bootm(cmdtp, 0, 1, local_args);
812                 return 1;
813         }
814         return 0;
815 }
816
817 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char * const argv[])
818 {
819         char *boot_device = NULL;
820         int idx;
821         ulong addr, offset = 0;
822 #if defined(CONFIG_CMD_MTDPARTS)
823         struct mtd_device *dev;
824         struct part_info *part;
825         u8 pnum;
826
827         if (argc >= 2) {
828                 char *p = (argc == 2) ? argv[1] : argv[2];
829                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
830                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
831                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
832                                 puts("Not a NAND device\n");
833                                 return 1;
834                         }
835                         if (argc > 3)
836                                 goto usage;
837                         if (argc == 3)
838                                 addr = simple_strtoul(argv[1], NULL, 16);
839                         else
840                                 addr = CONFIG_SYS_LOAD_ADDR;
841                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
842                                                part->offset, addr, argv[0]);
843                 }
844         }
845 #endif
846
847         show_boot_progress(52);
848         switch (argc) {
849         case 1:
850                 addr = CONFIG_SYS_LOAD_ADDR;
851                 boot_device = getenv("bootdevice");
852                 break;
853         case 2:
854                 addr = simple_strtoul(argv[1], NULL, 16);
855                 boot_device = getenv("bootdevice");
856                 break;
857         case 3:
858                 addr = simple_strtoul(argv[1], NULL, 16);
859                 boot_device = argv[2];
860                 break;
861         case 4:
862                 addr = simple_strtoul(argv[1], NULL, 16);
863                 boot_device = argv[2];
864                 offset = simple_strtoul(argv[3], NULL, 16);
865                 break;
866         default:
867 #if defined(CONFIG_CMD_MTDPARTS)
868 usage:
869 #endif
870                 show_boot_progress(-53);
871                 return cmd_usage(cmdtp);
872         }
873
874         show_boot_progress(53);
875         if (!boot_device) {
876                 puts("\n** No boot device **\n");
877                 show_boot_progress(-54);
878                 return 1;
879         }
880         show_boot_progress(54);
881
882         idx = simple_strtoul(boot_device, NULL, 16);
883
884         if (idx < 0 || idx >= CONFIG_SYS_MAX_NAND_DEVICE || !nand_info[idx].name) {
885                 printf("\n** Device %d not available\n", idx);
886                 show_boot_progress(-55);
887                 return 1;
888         }
889         show_boot_progress(55);
890
891         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
892 }
893
894 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
895         "boot from NAND device",
896         "[partition] | [[[loadAddr] dev] offset]"
897 );