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>
7 * Added 16-bit nand support
8 * (C) 2004 Texas Instruments
14 #ifndef CFG_NAND_LEGACY
22 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
27 #include <asm/byteorder.h>
29 #ifdef CONFIG_SHOW_BOOT_PROGRESS
30 # include <status_led.h>
31 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
33 # define SHOW_BOOT_PROGRESS(arg)
36 #include <jffs2/jffs2.h>
39 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
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
);
48 extern nand_info_t nand_info
[]; /* info for NAND chips */
50 static int nand_dump_oob(nand_info_t
*nand
, ulong off
)
55 static int nand_dump(nand_info_t
*nand
, ulong off
)
60 buf
= malloc(nand
->oobblock
+ nand
->oobsize
);
62 puts("No memory for page buffer\n");
65 off
&= ~(nand
->oobblock
- 1);
66 i
= nand_read_raw(nand
, buf
, off
, nand
->oobblock
, nand
->oobsize
);
68 printf("Error (%d) reading page %08x\n", i
, off
);
72 printf("Page %08x dump:\n", off
);
73 i
= nand
->oobblock
>> 4; p
= buf
;
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]);
82 i
= nand
->oobsize
>> 3;
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]);
93 /* ------------------------------------------------------------------------- */
95 static inline int str2long(char *p
, ulong
*num
)
99 *num
= simple_strtoul(p
, &endptr
, 16);
100 return (*p
!= '\0' && *endptr
== '\0') ? 1 : 0;
104 arg_off_size(int argc
, char *argv
[], nand_info_t
*nand
, ulong
*off
, ulong
*size
)
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
;
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");
121 if (!(str2long(argv
[1], size
))) {
122 printf("'%s' is not a number\n", argv
[1]);
125 if (*size
> part
->size
)
131 *nand
= nand_info
[idx
];
138 if (!(str2long(argv
[0], off
))) {
139 printf("'%s' is not a number\n", argv
[0]);
147 if (!(str2long(argv
[1], size
))) {
148 printf("'%s' is not a number\n", argv
[1]);
152 *size
= nand
->size
- *off
;
155 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
158 printf("device %d ", idx
);
159 if (*size
== nand
->size
)
160 puts("whole chip\n");
162 printf("offset 0x%x, size 0x%x\n", *off
, *size
);
166 int do_nand(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
169 ulong addr
, off
, size
;
173 const char *quiet_str
= getenv("quiet");
175 /* at least two arguments please */
180 quiet
= simple_strtoul(quiet_str
, NULL
, 0) != 0;
184 if (strcmp(cmd
, "info") == 0) {
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);
196 if (strcmp(cmd
, "device") == 0) {
199 if ((nand_curr_device
< 0) ||
200 (nand_curr_device
>= CFG_MAX_NAND_DEVICE
))
201 puts("\nno devices available\n");
203 printf("\nDevice %d: %s\n", nand_curr_device
,
204 nand_info
[nand_curr_device
].name
);
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");
212 printf("Device %d: %s", dev
, nand_info
[dev
].name
);
213 puts("... is now current device\n");
214 nand_curr_device
= dev
;
216 #ifdef CFG_NAND_SELECT_DEVICE
218 * Select the chip in the board/cpu specific driver
220 board_nand_select_device(nand_info
[dev
].priv
, dev
);
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 )
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");
240 nand
= &nand_info
[nand_curr_device
];
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
);
253 * nand erase [clean] [off size]
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");
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)
267 memset(&opts
, 0, sizeof(opts
));
275 "scrub option will erase all factory set "
278 "There is no reliable way to recover them.\n"
280 "Use this command only for testing purposes "
283 "are sure of what you are doing!\n"
284 "\nReally scrub this NAND flash? <y/N>\n");
286 if (getc() == 'y' && getc() == '\r') {
289 puts("scrub aborted\n");
293 ret
= nand_erase_opts(nand
, &opts
);
294 printf("%s\n", ret
? "ERROR" : "OK");
296 return ret
== 0 ? 0 : 1;
299 if (strncmp(cmd
, "dump", 4) == 0) {
303 s
= strchr(cmd
, '.');
304 off
= (int)simple_strtoul(argv
[2], NULL
, 16);
306 if (s
!= NULL
&& strcmp(s
, ".oob") == 0)
307 ret
= nand_dump_oob(nand
, off
);
309 ret
= nand_dump(nand
, off
);
311 return ret
== 0 ? 1 : 0;
316 if (strncmp(cmd
, "read", 4) == 0 || strncmp(cmd
, "write", 5) == 0) {
322 addr
= (ulong
)simple_strtoul(argv
[2], NULL
, 16);
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)
329 s
= strchr(cmd
, '.');
331 (!strcmp(s
, ".jffs2") || !strcmp(s
, ".e") || !strcmp(s
, ".i"))) {
334 nand_read_options_t opts
;
335 memset(&opts
, 0, sizeof(opts
));
336 opts
.buffer
= (u_char
*) addr
;
340 ret
= nand_read_opts(nand
, &opts
);
343 nand_write_options_t opts
;
344 memset(&opts
, 0, sizeof(opts
));
345 opts
.buffer
= (u_char
*) addr
;
348 /* opts.forcejffs2 = 1; */
352 ret
= nand_write_opts(nand
, &opts
);
356 ret
= nand_read(nand
, off
, &size
, (u_char
*)addr
);
358 ret
= nand_write(nand
, off
, &size
, (u_char
*)addr
);
361 printf(" %d bytes %s: %s\n", size
,
362 read
? "read" : "written", ret
? "ERROR" : "OK");
364 return ret
== 0 ? 0 : 1;
367 if (strcmp(cmd
, "markbad") == 0) {
368 addr
= (ulong
)simple_strtoul(argv
[2], NULL
, 16);
370 int ret
= nand
->block_markbad(nand
, addr
);
372 printf("block 0x%08lx successfully marked as bad\n",
376 printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
381 if (strcmp(cmd
, "biterr") == 0) {
386 if (strcmp(cmd
, "lock") == 0) {
390 if (!strcmp("tight", argv
[2]))
392 if (!strcmp("status", argv
[2]))
397 ulong block_start
= 0;
399 int last_status
= -1;
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 ?
408 for (off
= 0; off
< nand
->size
; off
+= nand
->oobblock
) {
409 int s
= nand_get_lock_status(nand
, off
);
411 /* print message only if status has changed
414 if (off
== nand
->size
- nand
->oobblock
415 || (s
!= last_status
&& off
!= 0)) {
417 printf("%08x - %08x: %8d pages %s%s%s\n",
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 " : ""));
429 if (!nand_lock(nand
, tight
)) {
430 puts("NAND flash successfully locked\n");
432 puts("Error locking NAND flash\n");
439 if (strcmp(cmd
, "unlock") == 0) {
440 if (arg_off_size(argc
- 2, argv
+ 2, nand
, &off
, &size
) < 0)
443 if (!nand_unlock(nand
, off
, size
)) {
444 puts("NAND flash successfully unlocked\n");
446 puts("Error unlocking NAND flash, "
447 "write and erase will probably fail\n");
454 printf("Usage:\n%s\n", cmdtp
->usage
);
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");
475 static int nand_load_image(cmd_tbl_t
*cmdtp
, nand_info_t
*nand
,
476 ulong offset
, ulong addr
, char *cmd
)
483 printf("\nLoading from %s, offset 0x%lx\n", nand
->name
, offset
);
485 cnt
= nand
->oobblock
;
486 r
= nand_read(nand
, offset
, &cnt
, (u_char
*) addr
);
488 puts("** Read error\n");
489 SHOW_BOOT_PROGRESS(-1);
493 hdr
= (image_header_t
*) addr
;
495 if (ntohl(hdr
->ih_magic
) != IH_MAGIC
) {
496 printf("\n** Bad Magic Number 0x%x **\n", hdr
->ih_magic
);
497 SHOW_BOOT_PROGRESS(-1);
501 print_image_hdr(hdr
);
503 cnt
= (ntohl(hdr
->ih_size
) + sizeof (image_header_t
));
505 r
= nand_read(nand
, offset
, &cnt
, (u_char
*) addr
);
507 puts("** Read error\n");
508 SHOW_BOOT_PROGRESS(-1);
512 /* Loading ok, update default load address */
516 /* Check if we should attempt an auto-start */
517 if (((ep
= getenv("autostart")) != NULL
) && (strcmp(ep
, "yes") == 0)) {
519 extern int do_bootm(cmd_tbl_t
*, int, int, char *[]);
522 local_args
[1] = NULL
;
524 printf("Automatic boot of image at addr 0x%08lx ...\n", addr
);
526 do_bootm(cmdtp
, 0, 1, local_args
);
532 int do_nandboot(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
534 char *boot_device
= NULL
;
536 ulong addr
, offset
= 0;
537 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
538 struct mtd_device
*dev
;
539 struct part_info
*part
;
543 char *p
= (argc
== 2) ? argv
[1] : argv
[2];
544 if (!(str2long(p
, &addr
)) && (mtdparts_init() == 0) &&
545 (find_dev_and_part(p
, &dev
, &pnum
, &part
) == 0)) {
546 if (dev
->id
->type
!= MTD_DEV_TYPE_NAND
) {
547 puts("Not a NAND device\n");
553 addr
= simple_strtoul(argv
[2], NULL
, 16);
555 addr
= CFG_LOAD_ADDR
;
556 return nand_load_image(cmdtp
, &nand_info
[dev
->id
->num
],
557 part
->offset
, addr
, argv
[0]);
564 addr
= CFG_LOAD_ADDR
;
565 boot_device
= getenv("bootdevice");
568 addr
= simple_strtoul(argv
[1], NULL
, 16);
569 boot_device
= getenv("bootdevice");
572 addr
= simple_strtoul(argv
[1], NULL
, 16);
573 boot_device
= argv
[2];
576 addr
= simple_strtoul(argv
[1], NULL
, 16);
577 boot_device
= argv
[2];
578 offset
= simple_strtoul(argv
[3], NULL
, 16);
581 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
584 printf("Usage:\n%s\n", cmdtp
->usage
);
585 SHOW_BOOT_PROGRESS(-1);
590 puts("\n** No boot device **\n");
591 SHOW_BOOT_PROGRESS(-1);
595 idx
= simple_strtoul(boot_device
, NULL
, 16);
597 if (idx
< 0 || idx
>= CFG_MAX_NAND_DEVICE
|| !nand_info
[idx
].name
) {
598 printf("\n** Device %d not available\n", idx
);
599 SHOW_BOOT_PROGRESS(-1);
603 return nand_load_image(cmdtp
, &nand_info
[idx
], offset
, addr
, argv
[0]);
606 U_BOOT_CMD(nboot
, 4, 1, do_nandboot
,
607 "nboot - boot from NAND device\n",
608 "[partition] | [[[loadAddr] dev] offset]\n");
610 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
612 #else /* CFG_NAND_LEGACY */
615 * Legacy NAND support - to be phased out
621 #include <watchdog.h>
623 #ifdef CONFIG_SHOW_BOOT_PROGRESS
624 # include <status_led.h>
625 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
627 # define SHOW_BOOT_PROGRESS(arg)
630 #if (CONFIG_COMMANDS & CFG_CMD_NAND)
631 #include <linux/mtd/nand_legacy.h>
633 #include <linux/mtd/nand_ids.h>
634 #include <jffs2/jffs2.h>
637 #ifdef CONFIG_OMAP1510
638 void archflashwp(void *archdata
, int wp
);
641 #define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
646 /* ****************** WARNING *********************
647 * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
648 * erase (or at least attempt to erase) blocks that are marked
649 * bad. This can be very handy if you are _sure_ that the block
650 * is OK, say because you marked a good block bad to test bad
651 * block handling and you are done testing, or if you have
652 * accidentally marked blocks bad.
654 * Erasing factory marked bad blocks is a _bad_ idea. If the
655 * erase succeeds there is no reliable way to find them again,
656 * and attempting to program or erase bad blocks can affect
657 * the data in _other_ (good) blocks.
659 #define ALLOW_ERASE_BAD_DEBUG 0
661 #define CONFIG_MTD_NAND_ECC /* enable ECC */
662 #define CONFIG_MTD_NAND_ECC_JFFS2
664 /* bits for nand_legacy_rw() `cmd'; or together as needed */
665 #define NANDRW_READ 0x01
666 #define NANDRW_WRITE 0x00
667 #define NANDRW_JFFS2 0x02
668 #define NANDRW_JFFS2_SKIP 0x04
671 * Imports from nand_legacy.c
673 extern struct nand_chip nand_dev_desc
[CFG_MAX_NAND_DEVICE
];
674 extern int curr_device
;
675 extern int nand_legacy_erase(struct nand_chip
*nand
, size_t ofs
,
676 size_t len
, int clean
);
677 extern int nand_legacy_rw(struct nand_chip
*nand
, int cmd
, size_t start
,
678 size_t len
, size_t *retlen
, u_char
*buf
);
679 extern void nand_print(struct nand_chip
*nand
);
680 extern void nand_print_bad(struct nand_chip
*nand
);
681 extern int nand_read_oob(struct nand_chip
*nand
, size_t ofs
,
682 size_t len
, size_t *retlen
, u_char
*buf
);
683 extern int nand_write_oob(struct nand_chip
*nand
, size_t ofs
,
684 size_t len
, size_t *retlen
, const u_char
*buf
);
687 int do_nand (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
694 printf ("Usage:\n%s\n", cmdtp
->usage
);
697 if (strcmp (argv
[1], "info") == 0) {
702 for (i
= 0; i
< CFG_MAX_NAND_DEVICE
; ++i
) {
703 if (nand_dev_desc
[i
].ChipID
==
705 continue; /* list only known devices */
706 printf ("Device %d: ", i
);
707 nand_print (&nand_dev_desc
[i
]);
711 } else if (strcmp (argv
[1], "device") == 0) {
712 if ((curr_device
< 0)
713 || (curr_device
>= CFG_MAX_NAND_DEVICE
)) {
714 puts ("\nno devices available\n");
717 printf ("\nDevice %d: ", curr_device
);
718 nand_print (&nand_dev_desc
[curr_device
]);
721 } else if (strcmp (argv
[1], "bad") == 0) {
722 if ((curr_device
< 0)
723 || (curr_device
>= CFG_MAX_NAND_DEVICE
)) {
724 puts ("\nno devices available\n");
727 printf ("\nDevice %d bad blocks:\n", curr_device
);
728 nand_print_bad (&nand_dev_desc
[curr_device
]);
732 printf ("Usage:\n%s\n", cmdtp
->usage
);
735 if (strcmp (argv
[1], "device") == 0) {
736 int dev
= (int) simple_strtoul (argv
[2], NULL
, 10);
738 printf ("\nDevice %d: ", dev
);
739 if (dev
>= CFG_MAX_NAND_DEVICE
) {
740 puts ("unknown device\n");
743 nand_print (&nand_dev_desc
[dev
]);
744 /*nand_print (dev); */
746 if (nand_dev_desc
[dev
].ChipID
== NAND_ChipID_UNKNOWN
) {
752 puts ("... is now current device\n");
755 } else if (strcmp (argv
[1], "erase") == 0
756 && strcmp (argv
[2], "clean") == 0) {
757 struct nand_chip
*nand
= &nand_dev_desc
[curr_device
];
759 ulong size
= nand
->totlen
;
762 printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device
, off
, size
);
764 ret
= nand_legacy_erase (nand
, off
, size
, 1);
766 printf ("%s\n", ret
? "ERROR" : "OK");
771 printf ("Usage:\n%s\n", cmdtp
->usage
);
774 /* at least 4 args */
776 if (strncmp (argv
[1], "read", 4) == 0 ||
777 strncmp (argv
[1], "write", 5) == 0) {
778 ulong addr
= simple_strtoul (argv
[2], NULL
, 16);
779 ulong off
= simple_strtoul (argv
[3], NULL
, 16);
780 ulong size
= simple_strtoul (argv
[4], NULL
, 16);
781 int cmd
= (strncmp (argv
[1], "read", 4) == 0) ?
782 NANDRW_READ
: NANDRW_WRITE
;
784 char *cmdtail
= strchr (argv
[1], '.');
786 if (cmdtail
&& !strncmp (cmdtail
, ".oob", 2)) {
787 /* read out-of-band data */
788 if (cmd
& NANDRW_READ
) {
789 ret
= nand_read_oob (nand_dev_desc
+ curr_device
,
790 off
, size
, (size_t *) & total
,
793 ret
= nand_write_oob (nand_dev_desc
+ curr_device
,
794 off
, size
, (size_t *) & total
,
798 } else if (cmdtail
&& !strncmp (cmdtail
, ".jffs2", 2))
799 cmd
|= NANDRW_JFFS2
; /* skip bad blocks */
800 else if (cmdtail
&& !strncmp (cmdtail
, ".jffs2s", 2)) {
801 cmd
|= NANDRW_JFFS2
; /* skip bad blocks (on read too) */
802 if (cmd
& NANDRW_READ
)
803 cmd
|= NANDRW_JFFS2_SKIP
; /* skip bad blocks (on read too) */
806 /* need ".e" same as ".j" for compatibility with older units */
807 else if (cmdtail
&& !strcmp (cmdtail
, ".e"))
808 cmd
|= NANDRW_JFFS2
; /* skip bad blocks */
810 #ifdef CFG_NAND_SKIP_BAD_DOT_I
811 /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
812 /* ".i" for image -> read skips bad block (no 0xff) */
813 else if (cmdtail
&& !strcmp (cmdtail
, ".i")) {
814 cmd
|= NANDRW_JFFS2
; /* skip bad blocks (on read too) */
815 if (cmd
& NANDRW_READ
)
816 cmd
|= NANDRW_JFFS2_SKIP
; /* skip bad blocks (on read too) */
818 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
820 printf ("Usage:\n%s\n", cmdtp
->usage
);
824 printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
825 (cmd
& NANDRW_READ
) ? "read" : "write",
826 curr_device
, off
, size
);
828 ret
= nand_legacy_rw (nand_dev_desc
+ curr_device
,
833 printf (" %d bytes %s: %s\n", total
,
834 (cmd
& NANDRW_READ
) ? "read" : "written",
835 ret
? "ERROR" : "OK");
838 } else if (strcmp (argv
[1], "erase") == 0 &&
839 (argc
== 4 || strcmp ("clean", argv
[2]) == 0)) {
840 int clean
= argc
== 5;
842 simple_strtoul (argv
[2 + clean
], NULL
, 16);
844 simple_strtoul (argv
[3 + clean
], NULL
, 16);
847 printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
848 curr_device
, off
, size
);
850 ret
= nand_legacy_erase (nand_dev_desc
+ curr_device
,
853 printf ("%s\n", ret
? "ERROR" : "OK");
857 printf ("Usage:\n%s\n", cmdtp
->usage
);
867 "nand - legacy NAND sub-system\n",
868 "info - show available NAND devices\n"
869 "nand device [dev] - show or set current device\n"
870 "nand read[.jffs2[s]] addr off size\n"
871 "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
872 " at offset `off' to/from memory address `addr'\n"
873 "nand erase [clean] [off size] - erase `size' bytes from\n"
874 " offset `off' (entire device if not specified)\n"
875 "nand bad - show bad blocks\n"
876 "nand read.oob addr off size - read out-of-band data\n"
877 "nand write.oob addr off size - read out-of-band data\n"
880 int do_nandboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
882 char *boot_device
= NULL
;
892 addr
= CFG_LOAD_ADDR
;
893 boot_device
= getenv ("bootdevice");
896 addr
= simple_strtoul(argv
[1], NULL
, 16);
897 boot_device
= getenv ("bootdevice");
900 addr
= simple_strtoul(argv
[1], NULL
, 16);
901 boot_device
= argv
[2];
904 addr
= simple_strtoul(argv
[1], NULL
, 16);
905 boot_device
= argv
[2];
906 offset
= simple_strtoul(argv
[3], NULL
, 16);
909 printf ("Usage:\n%s\n", cmdtp
->usage
);
910 SHOW_BOOT_PROGRESS (-1);
915 puts ("\n** No boot device **\n");
916 SHOW_BOOT_PROGRESS (-1);
920 dev
= simple_strtoul(boot_device
, &ep
, 16);
922 if ((dev
>= CFG_MAX_NAND_DEVICE
) ||
923 (nand_dev_desc
[dev
].ChipID
== NAND_ChipID_UNKNOWN
)) {
924 printf ("\n** Device %d not available\n", dev
);
925 SHOW_BOOT_PROGRESS (-1);
929 printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
930 dev
, nand_dev_desc
[dev
].name
, nand_dev_desc
[dev
].IO_ADDR
,
933 if (nand_legacy_rw (nand_dev_desc
+ dev
, NANDRW_READ
, offset
,
934 SECTORSIZE
, NULL
, (u_char
*)addr
)) {
935 printf ("** Read error on %d\n", dev
);
936 SHOW_BOOT_PROGRESS (-1);
940 hdr
= (image_header_t
*)addr
;
942 if (ntohl(hdr
->ih_magic
) == IH_MAGIC
) {
944 print_image_hdr (hdr
);
946 cnt
= (ntohl(hdr
->ih_size
) + sizeof(image_header_t
));
949 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr
->ih_magic
));
950 SHOW_BOOT_PROGRESS (-1);
954 if (nand_legacy_rw (nand_dev_desc
+ dev
, NANDRW_READ
,
955 offset
+ SECTORSIZE
, cnt
, NULL
,
956 (u_char
*)(addr
+SECTORSIZE
))) {
957 printf ("** Read error on %d\n", dev
);
958 SHOW_BOOT_PROGRESS (-1);
962 /* Loading ok, update default load address */
966 /* Check if we should attempt an auto-start */
967 if (((ep
= getenv("autostart")) != NULL
) && (strcmp(ep
,"yes") == 0)) {
969 extern int do_bootm (cmd_tbl_t
*, int, int, char *[]);
971 local_args
[0] = argv
[0];
972 local_args
[1] = NULL
;
974 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr
);
976 do_bootm (cmdtp
, 0, 1, local_args
);
983 nboot
, 4, 1, do_nandboot
,
984 "nboot - boot from NAND device\n",
988 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
990 #endif /* CFG_NAND_LEGACY */