Merge git://www.denx.de/git/u-boot
[platform/kernel/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 defined(CONFIG_CMD_NAND)
23
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_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
32
33 /* parition 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 extern nand_info_t nand_info[];       /* info for NAND chips */
41
42 static int nand_dump_oob(nand_info_t *nand, ulong off)
43 {
44         return 0;
45 }
46
47 static int nand_dump(nand_info_t *nand, ulong off)
48 {
49         int i;
50         u_char *buf, *p;
51
52         buf = malloc(nand->oobblock + nand->oobsize);
53         if (!buf) {
54                 puts("No memory for page buffer\n");
55                 return 1;
56         }
57         off &= ~(nand->oobblock - 1);
58         i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize);
59         if (i < 0) {
60                 printf("Error (%d) reading page %08x\n", i, off);
61                 free(buf);
62                 return 1;
63         }
64         printf("Page %08x dump:\n", off);
65         i = nand->oobblock >> 4; p = buf;
66         while (i--) {
67                 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x"
68                         "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
69                         p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
70                         p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
71                 p += 16;
72         }
73         puts("OOB:\n");
74         i = nand->oobsize >> 3;
75         while (i--) {
76                 printf( "\t%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;
79         }
80         free(buf);
81
82         return 0;
83 }
84
85 /* ------------------------------------------------------------------------- */
86
87 static inline int str2long(char *p, ulong *num)
88 {
89         char *endptr;
90
91         *num = simple_strtoul(p, &endptr, 16);
92         return (*p != '\0' && *endptr == '\0') ? 1 : 0;
93 }
94
95 static int
96 arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, ulong *size)
97 {
98         int idx = nand_curr_device;
99 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
100         struct mtd_device *dev;
101         struct part_info *part;
102         u8 pnum;
103
104         if (argc >= 1 && !(str2long(argv[0], off))) {
105                 if ((mtdparts_init() == 0) &&
106                     (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
107                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
108                                 puts("not a NAND device\n");
109                                 return -1;
110                         }
111                         *off = part->offset;
112                         if (argc >= 2) {
113                                 if (!(str2long(argv[1], size))) {
114                                         printf("'%s' is not a number\n", argv[1]);
115                                         return -1;
116                                 }
117                                 if (*size > part->size)
118                                         *size = part->size;
119                         } else {
120                                 *size = part->size;
121                         }
122                         idx = dev->id->num;
123                         *nand = nand_info[idx];
124                         goto out;
125                 }
126         }
127 #endif
128
129         if (argc >= 1) {
130                 if (!(str2long(argv[0], off))) {
131                         printf("'%s' is not a number\n", argv[0]);
132                         return -1;
133                 }
134         } else {
135                 *off = 0;
136         }
137
138         if (argc >= 2) {
139                 if (!(str2long(argv[1], size))) {
140                         printf("'%s' is not a number\n", argv[1]);
141                         return -1;
142                 }
143         } else {
144                 *size = nand->size - *off;
145         }
146
147 #if  defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
148 out:
149 #endif
150         printf("device %d ", idx);
151         if (*size == nand->size)
152                 puts("whole chip\n");
153         else
154                 printf("offset 0x%x, size 0x%x\n", *off, *size);
155         return 0;
156 }
157
158 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
159 {
160         int i, dev, ret;
161         ulong addr, off, size;
162         char *cmd, *s;
163         nand_info_t *nand;
164         int quiet = 0;
165         const char *quiet_str = getenv("quiet");
166
167         /* at least two arguments please */
168         if (argc < 2)
169                 goto usage;
170
171         if (quiet_str)
172                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
173
174         cmd = argv[1];
175
176         if (strcmp(cmd, "info") == 0) {
177
178                 putc('\n');
179                 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
180                         if (nand_info[i].name)
181                                 printf("Device %d: %s, sector size %lu KiB\n",
182                                         i, nand_info[i].name,
183                                         nand_info[i].erasesize >> 10);
184                 }
185                 return 0;
186         }
187
188         if (strcmp(cmd, "device") == 0) {
189
190                 if (argc < 3) {
191                         if ((nand_curr_device < 0) ||
192                             (nand_curr_device >= CFG_MAX_NAND_DEVICE))
193                                 puts("\nno devices available\n");
194                         else
195                                 printf("\nDevice %d: %s\n", nand_curr_device,
196                                         nand_info[nand_curr_device].name);
197                         return 0;
198                 }
199                 dev = (int)simple_strtoul(argv[2], NULL, 10);
200                 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
201                         puts("No such device\n");
202                         return 1;
203                 }
204                 printf("Device %d: %s", dev, nand_info[dev].name);
205                 puts("... is now current device\n");
206                 nand_curr_device = dev;
207
208 #ifdef CFG_NAND_SELECT_DEVICE
209                 /*
210                  * Select the chip in the board/cpu specific driver
211                  */
212                 board_nand_select_device(nand_info[dev].priv, dev);
213 #endif
214
215                 return 0;
216         }
217
218         if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
219             strncmp(cmd, "dump", 4) != 0 &&
220             strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
221             strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
222             strcmp(cmd, "biterr") != 0 &&
223             strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
224                 goto usage;
225
226         /* the following commands operate on the current device */
227         if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
228             !nand_info[nand_curr_device].name) {
229                 puts("\nno devices available\n");
230                 return 1;
231         }
232         nand = &nand_info[nand_curr_device];
233
234         if (strcmp(cmd, "bad") == 0) {
235                 printf("\nDevice %d bad blocks:\n", nand_curr_device);
236                 for (off = 0; off < nand->size; off += nand->erasesize)
237                         if (nand_block_isbad(nand, off))
238                                 printf("  %08x\n", off);
239                 return 0;
240         }
241
242         /*
243          * Syntax is:
244          *   0    1     2       3    4
245          *   nand erase [clean] [off size]
246          */
247         if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
248                 nand_erase_options_t opts;
249                 /* "clean" at index 2 means request to write cleanmarker */
250                 int clean = argc > 2 && !strcmp("clean", argv[2]);
251                 int o = clean ? 3 : 2;
252                 int scrub = !strcmp(cmd, "scrub");
253
254                 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
255                 /* skip first two or three arguments, look for offset and size */
256                 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
257                         return 1;
258
259                 memset(&opts, 0, sizeof(opts));
260                 opts.offset = off;
261                 opts.length = size;
262                 opts.jffs2  = clean;
263                 opts.quiet  = quiet;
264
265                 if (scrub) {
266                         puts("Warning: "
267                              "scrub option will erase all factory set "
268                              "bad blocks!\n"
269                              "         "
270                              "There is no reliable way to recover them.\n"
271                              "         "
272                              "Use this command only for testing purposes "
273                              "if you\n"
274                              "         "
275                              "are sure of what you are doing!\n"
276                              "\nReally scrub this NAND flash? <y/N>\n");
277
278                         if (getc() == 'y' && getc() == '\r') {
279                                 opts.scrub = 1;
280                         } else {
281                                 puts("scrub aborted\n");
282                                 return -1;
283                         }
284                 }
285                 ret = nand_erase_opts(nand, &opts);
286                 printf("%s\n", ret ? "ERROR" : "OK");
287
288                 return ret == 0 ? 0 : 1;
289         }
290
291         if (strncmp(cmd, "dump", 4) == 0) {
292                 if (argc < 3)
293                         goto usage;
294
295                 s = strchr(cmd, '.');
296                 off = (int)simple_strtoul(argv[2], NULL, 16);
297
298                 if (s != NULL && strcmp(s, ".oob") == 0)
299                         ret = nand_dump_oob(nand, off);
300                 else
301                         ret = nand_dump(nand, off);
302
303                 return ret == 0 ? 1 : 0;
304
305         }
306
307         /* read write */
308         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
309                 int read;
310
311                 if (argc < 4)
312                         goto usage;
313
314                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
315
316                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
317                 printf("\nNAND %s: ", read ? "read" : "write");
318                 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
319                         return 1;
320
321                 s = strchr(cmd, '.');
322                 if (s != NULL &&
323                     (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
324                         if (read) {
325                                 /* read */
326                                 nand_read_options_t opts;
327                                 memset(&opts, 0, sizeof(opts));
328                                 opts.buffer     = (u_char*) addr;
329                                 opts.length     = size;
330                                 opts.offset     = off;
331                                 opts.quiet      = quiet;
332                                 ret = nand_read_opts(nand, &opts);
333                         } else {
334                                 /* write */
335                                 nand_write_options_t opts;
336                                 memset(&opts, 0, sizeof(opts));
337                                 opts.buffer     = (u_char*) addr;
338                                 opts.length     = size;
339                                 opts.offset     = off;
340                                 /* opts.forcejffs2 = 1; */
341                                 opts.pad        = 1;
342                                 opts.blockalign = 1;
343                                 opts.quiet      = quiet;
344                                 ret = nand_write_opts(nand, &opts);
345                         }
346                 } else {
347                         if (read)
348                                 ret = nand_read(nand, off, &size, (u_char *)addr);
349                         else
350                                 ret = nand_write(nand, off, &size, (u_char *)addr);
351                 }
352
353                 printf(" %d bytes %s: %s\n", size,
354                        read ? "read" : "written", ret ? "ERROR" : "OK");
355
356                 return ret == 0 ? 0 : 1;
357         }
358
359         if (strcmp(cmd, "markbad") == 0) {
360                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
361
362                 int ret = nand->block_markbad(nand, addr);
363                 if (ret == 0) {
364                         printf("block 0x%08lx successfully marked as bad\n",
365                                (ulong) addr);
366                         return 0;
367                 } else {
368                         printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
369                                (ulong) addr, ret);
370                 }
371                 return 1;
372         }
373         if (strcmp(cmd, "biterr") == 0) {
374                 /* todo */
375                 return 1;
376         }
377
378         if (strcmp(cmd, "lock") == 0) {
379                 int tight  = 0;
380                 int status = 0;
381                 if (argc == 3) {
382                         if (!strcmp("tight", argv[2]))
383                                 tight = 1;
384                         if (!strcmp("status", argv[2]))
385                                 status = 1;
386                 }
387
388                 if (status) {
389                         ulong block_start = 0;
390                         ulong off;
391                         int last_status = -1;
392
393                         struct nand_chip *nand_chip = nand->priv;
394                         /* check the WP bit */
395                         nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
396                         printf("device is %swrite protected\n",
397                                (nand_chip->read_byte(nand) & 0x80 ?
398                                 "NOT " : "" ) );
399
400                         for (off = 0; off < nand->size; off += nand->oobblock) {
401                                 int s = nand_get_lock_status(nand, off);
402
403                                 /* print message only if status has changed
404                                  * or at end of chip
405                                  */
406                                 if (off == nand->size - nand->oobblock
407                                     || (s != last_status && off != 0))  {
408
409                                         printf("%08x - %08x: %8d pages %s%s%s\n",
410                                                block_start,
411                                                off-1,
412                                                (off-block_start)/nand->oobblock,
413                                                ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
414                                                ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
415                                                ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
416                                 }
417
418                                 last_status = s;
419                        }
420                 } else {
421                         if (!nand_lock(nand, tight)) {
422                                 puts("NAND flash successfully locked\n");
423                         } else {
424                                 puts("Error locking NAND flash\n");
425                                 return 1;
426                         }
427                 }
428                 return 0;
429         }
430
431         if (strcmp(cmd, "unlock") == 0) {
432                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
433                         return 1;
434
435                 if (!nand_unlock(nand, off, size)) {
436                         puts("NAND flash successfully unlocked\n");
437                 } else {
438                         puts("Error unlocking NAND flash, "
439                              "write and erase will probably fail\n");
440                         return 1;
441                 }
442                 return 0;
443         }
444
445 usage:
446         printf("Usage:\n%s\n", cmdtp->usage);
447         return 1;
448 }
449
450 U_BOOT_CMD(nand, 5, 1, do_nand,
451         "nand    - NAND sub-system\n",
452         "info                  - show available NAND devices\n"
453         "nand device [dev]     - show or set current device\n"
454         "nand read[.jffs2]     - addr off|partition size\n"
455         "nand write[.jffs2]    - addr off|partiton size - read/write `size' bytes starting\n"
456         "    at offset `off' to/from memory address `addr'\n"
457         "nand erase [clean] [off size] - erase `size' bytes from\n"
458         "    offset `off' (entire device if not specified)\n"
459         "nand bad - show bad blocks\n"
460         "nand dump[.oob] off - dump page\n"
461         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
462         "nand markbad off - mark bad block at offset (UNSAFE)\n"
463         "nand biterr off - make a bit error at offset (UNSAFE)\n"
464         "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
465         "nand unlock [offset] [size] - unlock section\n");
466
467 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
468                            ulong offset, ulong addr, char *cmd)
469 {
470         int r;
471         char *ep;
472         ulong cnt;
473         image_header_t *hdr;
474
475         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
476
477         cnt = nand->oobblock;
478         r = nand_read(nand, offset, &cnt, (u_char *) addr);
479         if (r) {
480                 puts("** Read error\n");
481                 show_boot_progress (-56);
482                 return 1;
483         }
484         show_boot_progress (56);
485
486         hdr = (image_header_t *) addr;
487
488         if (ntohl(hdr->ih_magic) != IH_MAGIC) {
489                 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
490                 show_boot_progress (-57);
491                 return 1;
492         }
493         show_boot_progress (57);
494
495         print_image_hdr(hdr);
496
497         cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
498
499         r = nand_read(nand, offset, &cnt, (u_char *) addr);
500         if (r) {
501                 puts("** Read error\n");
502                 show_boot_progress (-58);
503                 return 1;
504         }
505         show_boot_progress (58);
506
507         /* Loading ok, update default load address */
508
509         load_addr = addr;
510
511         /* Check if we should attempt an auto-start */
512         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
513                 char *local_args[2];
514                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
515
516                 local_args[0] = cmd;
517                 local_args[1] = NULL;
518
519                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
520
521                 do_bootm(cmdtp, 0, 1, local_args);
522                 return 1;
523         }
524         return 0;
525 }
526
527 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
528 {
529         char *boot_device = NULL;
530         int idx;
531         ulong addr, offset = 0;
532 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
533         struct mtd_device *dev;
534         struct part_info *part;
535         u8 pnum;
536
537         if (argc >= 2) {
538                 char *p = (argc == 2) ? argv[1] : argv[2];
539                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
540                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
541                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
542                                 puts("Not a NAND device\n");
543                                 return 1;
544                         }
545                         if (argc > 3)
546                                 goto usage;
547                         if (argc == 3)
548                                 addr = simple_strtoul(argv[2], NULL, 16);
549                         else
550                                 addr = CFG_LOAD_ADDR;
551                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
552                                                part->offset, addr, argv[0]);
553                 }
554         }
555 #endif
556
557         show_boot_progress(52);
558         switch (argc) {
559         case 1:
560                 addr = CFG_LOAD_ADDR;
561                 boot_device = getenv("bootdevice");
562                 break;
563         case 2:
564                 addr = simple_strtoul(argv[1], NULL, 16);
565                 boot_device = getenv("bootdevice");
566                 break;
567         case 3:
568                 addr = simple_strtoul(argv[1], NULL, 16);
569                 boot_device = argv[2];
570                 break;
571         case 4:
572                 addr = simple_strtoul(argv[1], NULL, 16);
573                 boot_device = argv[2];
574                 offset = simple_strtoul(argv[3], NULL, 16);
575                 break;
576         default:
577 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
578 usage:
579 #endif
580                 printf("Usage:\n%s\n", cmdtp->usage);
581                 show_boot_progress(-53);
582                 return 1;
583         }
584
585         show_boot_progress(53);
586         if (!boot_device) {
587                 puts("\n** No boot device **\n");
588                 show_boot_progress(-54);
589                 return 1;
590         }
591         show_boot_progress(54);
592
593         idx = simple_strtoul(boot_device, NULL, 16);
594
595         if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
596                 printf("\n** Device %d not available\n", idx);
597                 show_boot_progress(-55);
598                 return 1;
599         }
600         show_boot_progress(55);
601
602         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
603 }
604
605 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
606         "nboot   - boot from NAND device\n",
607         "[partition] | [[[loadAddr] dev] offset]\n");
608
609 #endif
610
611 #else /* CFG_NAND_LEGACY */
612 /*
613  *
614  * Legacy NAND support - to be phased out
615  *
616  */
617 #include <command.h>
618 #include <malloc.h>
619 #include <asm/io.h>
620 #include <watchdog.h>
621
622 #ifdef CONFIG_show_boot_progress
623 # include <status_led.h>
624 # define show_boot_progress(arg)        show_boot_progress(arg)
625 #else
626 # define show_boot_progress(arg)
627 #endif
628
629 #if defined(CONFIG_CMD_NAND)
630 #include <linux/mtd/nand_legacy.h>
631 #if 0
632 #include <linux/mtd/nand_ids.h>
633 #include <jffs2/jffs2.h>
634 #endif
635
636 #ifdef CONFIG_OMAP1510
637 void archflashwp(void *archdata, int wp);
638 #endif
639
640 #define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
641
642 #undef  NAND_DEBUG
643 #undef  PSYCHO_DEBUG
644
645 /* ****************** WARNING *********************
646  * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
647  * erase (or at least attempt to erase) blocks that are marked
648  * bad. This can be very handy if you are _sure_ that the block
649  * is OK, say because you marked a good block bad to test bad
650  * block handling and you are done testing, or if you have
651  * accidentally marked blocks bad.
652  *
653  * Erasing factory marked bad blocks is a _bad_ idea. If the
654  * erase succeeds there is no reliable way to find them again,
655  * and attempting to program or erase bad blocks can affect
656  * the data in _other_ (good) blocks.
657  */
658 #define  ALLOW_ERASE_BAD_DEBUG 0
659
660 #define CONFIG_MTD_NAND_ECC  /* enable ECC */
661 #define CONFIG_MTD_NAND_ECC_JFFS2
662
663 /* bits for nand_legacy_rw() `cmd'; or together as needed */
664 #define NANDRW_READ     0x01
665 #define NANDRW_WRITE    0x00
666 #define NANDRW_JFFS2    0x02
667 #define NANDRW_JFFS2_SKIP       0x04
668
669 /*
670  * Imports from nand_legacy.c
671  */
672 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
673 extern int curr_device;
674 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
675                             size_t len, int clean);
676 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
677                          size_t len, size_t *retlen, u_char *buf);
678 extern void nand_print(struct nand_chip *nand);
679 extern void nand_print_bad(struct nand_chip *nand);
680 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
681                                size_t len, size_t *retlen, u_char *buf);
682 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
683                                 size_t len, size_t *retlen, const u_char *buf);
684
685
686 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
687 {
688         int rcode = 0;
689
690         switch (argc) {
691         case 0:
692         case 1:
693                 printf ("Usage:\n%s\n", cmdtp->usage);
694                 return 1;
695         case 2:
696                 if (strcmp (argv[1], "info") == 0) {
697                         int i;
698
699                         putc ('\n');
700
701                         for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
702                                 if (nand_dev_desc[i].ChipID ==
703                                     NAND_ChipID_UNKNOWN)
704                                         continue;       /* list only known devices */
705                                 printf ("Device %d: ", i);
706                                 nand_print (&nand_dev_desc[i]);
707                         }
708                         return 0;
709
710                 } else if (strcmp (argv[1], "device") == 0) {
711                         if ((curr_device < 0)
712                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
713                                 puts ("\nno devices available\n");
714                                 return 1;
715                         }
716                         printf ("\nDevice %d: ", curr_device);
717                         nand_print (&nand_dev_desc[curr_device]);
718                         return 0;
719
720                 } else if (strcmp (argv[1], "bad") == 0) {
721                         if ((curr_device < 0)
722                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
723                                 puts ("\nno devices available\n");
724                                 return 1;
725                         }
726                         printf ("\nDevice %d bad blocks:\n", curr_device);
727                         nand_print_bad (&nand_dev_desc[curr_device]);
728                         return 0;
729
730                 }
731                 printf ("Usage:\n%s\n", cmdtp->usage);
732                 return 1;
733         case 3:
734                 if (strcmp (argv[1], "device") == 0) {
735                         int dev = (int) simple_strtoul (argv[2], NULL, 10);
736
737                         printf ("\nDevice %d: ", dev);
738                         if (dev >= CFG_MAX_NAND_DEVICE) {
739                                 puts ("unknown device\n");
740                                 return 1;
741                         }
742                         nand_print (&nand_dev_desc[dev]);
743                         /*nand_print (dev); */
744
745                         if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
746                                 return 1;
747                         }
748
749                         curr_device = dev;
750
751                         puts ("... is now current device\n");
752
753                         return 0;
754                 } else if (strcmp (argv[1], "erase") == 0
755                            && strcmp (argv[2], "clean") == 0) {
756                         struct nand_chip *nand = &nand_dev_desc[curr_device];
757                         ulong off = 0;
758                         ulong size = nand->totlen;
759                         int ret;
760
761                         printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
762
763                         ret = nand_legacy_erase (nand, off, size, 1);
764
765                         printf ("%s\n", ret ? "ERROR" : "OK");
766
767                         return ret;
768                 }
769
770                 printf ("Usage:\n%s\n", cmdtp->usage);
771                 return 1;
772         default:
773                 /* at least 4 args */
774
775                 if (strncmp (argv[1], "read", 4) == 0 ||
776                     strncmp (argv[1], "write", 5) == 0) {
777                         ulong addr = simple_strtoul (argv[2], NULL, 16);
778                         ulong off = simple_strtoul (argv[3], NULL, 16);
779                         ulong size = simple_strtoul (argv[4], NULL, 16);
780                         int cmd = (strncmp (argv[1], "read", 4) == 0) ?
781                                 NANDRW_READ : NANDRW_WRITE;
782                         int ret, total;
783                         char *cmdtail = strchr (argv[1], '.');
784
785                         if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
786                                 /* read out-of-band data */
787                                 if (cmd & NANDRW_READ) {
788                                         ret = nand_read_oob (nand_dev_desc + curr_device,
789                                                              off, size, (size_t *) & total,
790                                                              (u_char *) addr);
791                                 } else {
792                                         ret = nand_write_oob (nand_dev_desc + curr_device,
793                                                               off, size, (size_t *) & total,
794                                                               (u_char *) addr);
795                                 }
796                                 return ret;
797                         } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
798                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
799                         else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
800                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
801                                 if (cmd & NANDRW_READ)
802                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
803                         }
804 #ifdef SXNI855T
805                         /* need ".e" same as ".j" for compatibility with older units */
806                         else if (cmdtail && !strcmp (cmdtail, ".e"))
807                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
808 #endif
809 #ifdef CFG_NAND_SKIP_BAD_DOT_I
810                         /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
811                         /* ".i" for image -> read skips bad block (no 0xff) */
812                         else if (cmdtail && !strcmp (cmdtail, ".i")) {
813                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
814                                 if (cmd & NANDRW_READ)
815                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
816                         }
817 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
818                         else if (cmdtail) {
819                                 printf ("Usage:\n%s\n", cmdtp->usage);
820                                 return 1;
821                         }
822
823                         printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
824                                 (cmd & NANDRW_READ) ? "read" : "write",
825                                 curr_device, off, size);
826
827                         ret = nand_legacy_rw (nand_dev_desc + curr_device,
828                                               cmd, off, size,
829                                               (size_t *) & total,
830                                               (u_char *) addr);
831
832                         printf (" %d bytes %s: %s\n", total,
833                                 (cmd & NANDRW_READ) ? "read" : "written",
834                                 ret ? "ERROR" : "OK");
835
836                         return ret;
837                 } else if (strcmp (argv[1], "erase") == 0 &&
838                            (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
839                         int clean = argc == 5;
840                         ulong off =
841                                 simple_strtoul (argv[2 + clean], NULL, 16);
842                         ulong size =
843                                 simple_strtoul (argv[3 + clean], NULL, 16);
844                         int ret;
845
846                         printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
847                                 curr_device, off, size);
848
849                         ret = nand_legacy_erase (nand_dev_desc + curr_device,
850                                                  off, size, clean);
851
852                         printf ("%s\n", ret ? "ERROR" : "OK");
853
854                         return ret;
855                 } else {
856                         printf ("Usage:\n%s\n", cmdtp->usage);
857                         rcode = 1;
858                 }
859
860                 return rcode;
861         }
862 }
863
864 U_BOOT_CMD(
865         nand,   5,      1,      do_nand,
866         "nand    - legacy NAND sub-system\n",
867         "info  - show available NAND devices\n"
868         "nand device [dev] - show or set current device\n"
869         "nand read[.jffs2[s]]  addr off size\n"
870         "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
871         "    at offset `off' to/from memory address `addr'\n"
872         "nand erase [clean] [off size] - erase `size' bytes from\n"
873         "    offset `off' (entire device if not specified)\n"
874         "nand bad - show bad blocks\n"
875         "nand read.oob addr off size - read out-of-band data\n"
876         "nand write.oob addr off size - read out-of-band data\n"
877 );
878
879 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
880 {
881         char *boot_device = NULL;
882         char *ep;
883         int dev;
884         ulong cnt;
885         ulong addr;
886         ulong offset = 0;
887         image_header_t *hdr;
888         int rcode = 0;
889         show_boot_progress (52);
890         switch (argc) {
891         case 1:
892                 addr = CFG_LOAD_ADDR;
893                 boot_device = getenv ("bootdevice");
894                 break;
895         case 2:
896                 addr = simple_strtoul(argv[1], NULL, 16);
897                 boot_device = getenv ("bootdevice");
898                 break;
899         case 3:
900                 addr = simple_strtoul(argv[1], NULL, 16);
901                 boot_device = argv[2];
902                 break;
903         case 4:
904                 addr = simple_strtoul(argv[1], NULL, 16);
905                 boot_device = argv[2];
906                 offset = simple_strtoul(argv[3], NULL, 16);
907                 break;
908         default:
909                 printf ("Usage:\n%s\n", cmdtp->usage);
910                 show_boot_progress (-53);
911                 return 1;
912         }
913
914         show_boot_progress (53);
915         if (!boot_device) {
916                 puts ("\n** No boot device **\n");
917                 show_boot_progress (-54);
918                 return 1;
919         }
920         show_boot_progress (54);
921
922         dev = simple_strtoul(boot_device, &ep, 16);
923
924         if ((dev >= CFG_MAX_NAND_DEVICE) ||
925             (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
926                 printf ("\n** Device %d not available\n", dev);
927                 show_boot_progress (-55);
928                 return 1;
929         }
930         show_boot_progress (55);
931
932         printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
933                 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
934                 offset);
935
936         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
937                         SECTORSIZE, NULL, (u_char *)addr)) {
938                 printf ("** Read error on %d\n", dev);
939                 show_boot_progress (-56);
940                 return 1;
941         }
942         show_boot_progress (56);
943
944         hdr = (image_header_t *)addr;
945
946         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
947
948                 print_image_hdr (hdr);
949
950                 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
951                 cnt -= SECTORSIZE;
952         } else {
953                 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
954                 show_boot_progress (-57);
955                 return 1;
956         }
957         show_boot_progress (57);
958
959         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
960                         offset + SECTORSIZE, cnt, NULL,
961                         (u_char *)(addr+SECTORSIZE))) {
962                 printf ("** Read error on %d\n", dev);
963                 show_boot_progress (-58);
964                 return 1;
965         }
966         show_boot_progress (58);
967
968         /* Loading ok, update default load address */
969
970         load_addr = addr;
971
972         /* Check if we should attempt an auto-start */
973         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
974                 char *local_args[2];
975                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
976
977                 local_args[0] = argv[0];
978                 local_args[1] = NULL;
979
980                 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
981
982                 do_bootm (cmdtp, 0, 1, local_args);
983                 rcode = 1;
984         }
985         return rcode;
986 }
987
988 U_BOOT_CMD(
989         nboot,  4,      1,      do_nandboot,
990         "nboot   - boot from NAND device\n",
991         "loadAddr dev\n"
992 );
993
994 #endif
995
996 #endif /* CFG_NAND_LEGACY */