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 defined(CONFIG_CMD_NAND)
27 #include <asm/byteorder.h>
28 #include <jffs2/jffs2.h>
31 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
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
);
40 extern nand_info_t nand_info
[]; /* info for NAND chips */
42 static int nand_dump_oob(nand_info_t
*nand
, ulong off
)
47 static int nand_dump(nand_info_t
*nand
, ulong off
)
52 buf
= malloc(nand
->oobblock
+ nand
->oobsize
);
54 puts("No memory for page buffer\n");
57 off
&= ~(nand
->oobblock
- 1);
58 i
= nand_read_raw(nand
, buf
, off
, nand
->oobblock
, nand
->oobsize
);
60 printf("Error (%d) reading page %08x\n", i
, off
);
64 printf("Page %08x dump:\n", off
);
65 i
= nand
->oobblock
>> 4; p
= buf
;
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]);
74 i
= nand
->oobsize
>> 3;
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]);
85 /* ------------------------------------------------------------------------- */
87 static inline int str2long(char *p
, ulong
*num
)
91 *num
= simple_strtoul(p
, &endptr
, 16);
92 return (*p
!= '\0' && *endptr
== '\0') ? 1 : 0;
96 arg_off_size(int argc
, char *argv
[], nand_info_t
*nand
, ulong
*off
, ulong
*size
)
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
;
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");
113 if (!(str2long(argv
[1], size
))) {
114 printf("'%s' is not a number\n", argv
[1]);
117 if (*size
> part
->size
)
123 *nand
= nand_info
[idx
];
130 if (!(str2long(argv
[0], off
))) {
131 printf("'%s' is not a number\n", argv
[0]);
139 if (!(str2long(argv
[1], size
))) {
140 printf("'%s' is not a number\n", argv
[1]);
144 *size
= nand
->size
- *off
;
147 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
150 printf("device %d ", idx
);
151 if (*size
== nand
->size
)
152 puts("whole chip\n");
154 printf("offset 0x%x, size 0x%x\n", *off
, *size
);
158 int do_nand(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
161 ulong addr
, off
, size
;
164 #ifdef CFG_NAND_QUIET
165 int quiet
= CFG_NAND_QUIET
;
169 const char *quiet_str
= getenv("quiet");
171 /* at least two arguments please */
176 quiet
= simple_strtoul(quiet_str
, NULL
, 0) != 0;
180 if (strcmp(cmd
, "info") == 0) {
183 for (i
= 0; i
< CFG_MAX_NAND_DEVICE
; i
++) {
184 if (nand_info
[i
].name
)
185 printf("Device %d: %s, sector size %lu KiB\n",
186 i
, nand_info
[i
].name
,
187 nand_info
[i
].erasesize
>> 10);
192 if (strcmp(cmd
, "device") == 0) {
195 if ((nand_curr_device
< 0) ||
196 (nand_curr_device
>= CFG_MAX_NAND_DEVICE
))
197 puts("\nno devices available\n");
199 printf("\nDevice %d: %s\n", nand_curr_device
,
200 nand_info
[nand_curr_device
].name
);
203 dev
= (int)simple_strtoul(argv
[2], NULL
, 10);
204 if (dev
< 0 || dev
>= CFG_MAX_NAND_DEVICE
|| !nand_info
[dev
].name
) {
205 puts("No such device\n");
208 printf("Device %d: %s", dev
, nand_info
[dev
].name
);
209 puts("... is now current device\n");
210 nand_curr_device
= dev
;
212 #ifdef CFG_NAND_SELECT_DEVICE
214 * Select the chip in the board/cpu specific driver
216 board_nand_select_device(nand_info
[dev
].priv
, dev
);
222 if (strcmp(cmd
, "bad") != 0 && strcmp(cmd
, "erase") != 0 &&
223 strncmp(cmd
, "dump", 4) != 0 &&
224 strncmp(cmd
, "read", 4) != 0 && strncmp(cmd
, "write", 5) != 0 &&
225 strcmp(cmd
, "scrub") != 0 && strcmp(cmd
, "markbad") != 0 &&
226 strcmp(cmd
, "biterr") != 0 &&
227 strcmp(cmd
, "lock") != 0 && strcmp(cmd
, "unlock") != 0 )
230 /* the following commands operate on the current device */
231 if (nand_curr_device
< 0 || nand_curr_device
>= CFG_MAX_NAND_DEVICE
||
232 !nand_info
[nand_curr_device
].name
) {
233 puts("\nno devices available\n");
236 nand
= &nand_info
[nand_curr_device
];
238 if (strcmp(cmd
, "bad") == 0) {
239 printf("\nDevice %d bad blocks:\n", nand_curr_device
);
240 for (off
= 0; off
< nand
->size
; off
+= nand
->erasesize
)
241 if (nand_block_isbad(nand
, off
))
242 printf(" %08x\n", off
);
249 * nand erase [clean] [off size]
251 if (strcmp(cmd
, "erase") == 0 || strcmp(cmd
, "scrub") == 0) {
252 nand_erase_options_t opts
;
253 /* "clean" at index 2 means request to write cleanmarker */
254 int clean
= argc
> 2 && !strcmp("clean", argv
[2]);
255 int o
= clean
? 3 : 2;
256 int scrub
= !strcmp(cmd
, "scrub");
258 printf("\nNAND %s: ", scrub
? "scrub" : "erase");
259 /* skip first two or three arguments, look for offset and size */
260 if (arg_off_size(argc
- o
, argv
+ o
, nand
, &off
, &size
) != 0)
263 memset(&opts
, 0, sizeof(opts
));
271 "scrub option will erase all factory set "
274 "There is no reliable way to recover them.\n"
276 "Use this command only for testing purposes "
279 "are sure of what you are doing!\n"
280 "\nReally scrub this NAND flash? <y/N>\n");
282 if (getc() == 'y' && getc() == '\r') {
285 puts("scrub aborted\n");
289 ret
= nand_erase_opts(nand
, &opts
);
290 printf("%s\n", ret
? "ERROR" : "OK");
292 return ret
== 0 ? 0 : 1;
295 if (strncmp(cmd
, "dump", 4) == 0) {
299 s
= strchr(cmd
, '.');
300 off
= (int)simple_strtoul(argv
[2], NULL
, 16);
302 if (s
!= NULL
&& strcmp(s
, ".oob") == 0)
303 ret
= nand_dump_oob(nand
, off
);
305 ret
= nand_dump(nand
, off
);
307 return ret
== 0 ? 1 : 0;
312 if (strncmp(cmd
, "read", 4) == 0 || strncmp(cmd
, "write", 5) == 0) {
318 addr
= (ulong
)simple_strtoul(argv
[2], NULL
, 16);
320 read
= strncmp(cmd
, "read", 4) == 0; /* 1 = read, 0 = write */
321 printf("\nNAND %s: ", read
? "read" : "write");
322 if (arg_off_size(argc
- 3, argv
+ 3, nand
, &off
, &size
) != 0)
325 s
= strchr(cmd
, '.');
327 (!strcmp(s
, ".jffs2") || !strcmp(s
, ".e") || !strcmp(s
, ".i"))) {
330 nand_read_options_t opts
;
331 memset(&opts
, 0, sizeof(opts
));
332 opts
.buffer
= (u_char
*) addr
;
336 ret
= nand_read_opts(nand
, &opts
);
339 nand_write_options_t opts
;
340 memset(&opts
, 0, sizeof(opts
));
341 opts
.buffer
= (u_char
*) addr
;
344 /* opts.forcejffs2 = 1; */
348 ret
= nand_write_opts(nand
, &opts
);
350 } else if (s
!= NULL
&& !strcmp(s
, ".oob")) {
351 /* read out-of-band data */
353 ret
= nand
->read_oob(nand
, off
, size
, (size_t *) &size
,
356 ret
= nand
->write_oob(nand
, off
, size
, (size_t *) &size
,
360 ret
= nand_read(nand
, off
, &size
, (u_char
*)addr
);
362 ret
= nand_write(nand
, off
, &size
, (u_char
*)addr
);
365 printf(" %d bytes %s: %s\n", size
,
366 read
? "read" : "written", ret
? "ERROR" : "OK");
368 return ret
== 0 ? 0 : 1;
371 if (strcmp(cmd
, "markbad") == 0) {
372 addr
= (ulong
)simple_strtoul(argv
[2], NULL
, 16);
374 int ret
= nand
->block_markbad(nand
, addr
);
376 printf("block 0x%08lx successfully marked as bad\n",
380 printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
385 if (strcmp(cmd
, "biterr") == 0) {
390 if (strcmp(cmd
, "lock") == 0) {
394 if (!strcmp("tight", argv
[2]))
396 if (!strcmp("status", argv
[2]))
401 ulong block_start
= 0;
403 int last_status
= -1;
405 struct nand_chip
*nand_chip
= nand
->priv
;
406 /* check the WP bit */
407 nand_chip
->cmdfunc (nand
, NAND_CMD_STATUS
, -1, -1);
408 printf("device is %swrite protected\n",
409 (nand_chip
->read_byte(nand
) & 0x80 ?
412 for (off
= 0; off
< nand
->size
; off
+= nand
->oobblock
) {
413 int s
= nand_get_lock_status(nand
, off
);
415 /* print message only if status has changed
418 if (off
== nand
->size
- nand
->oobblock
419 || (s
!= last_status
&& off
!= 0)) {
421 printf("%08x - %08x: %8d pages %s%s%s\n",
424 (off
-block_start
)/nand
->oobblock
,
425 ((last_status
& NAND_LOCK_STATUS_TIGHT
) ? "TIGHT " : ""),
426 ((last_status
& NAND_LOCK_STATUS_LOCK
) ? "LOCK " : ""),
427 ((last_status
& NAND_LOCK_STATUS_UNLOCK
) ? "UNLOCK " : ""));
433 if (!nand_lock(nand
, tight
)) {
434 puts("NAND flash successfully locked\n");
436 puts("Error locking NAND flash\n");
443 if (strcmp(cmd
, "unlock") == 0) {
444 if (arg_off_size(argc
- 2, argv
+ 2, nand
, &off
, &size
) < 0)
447 if (!nand_unlock(nand
, off
, size
)) {
448 puts("NAND flash successfully unlocked\n");
450 puts("Error unlocking NAND flash, "
451 "write and erase will probably fail\n");
458 printf("Usage:\n%s\n", cmdtp
->usage
);
462 U_BOOT_CMD(nand
, 5, 1, do_nand
,
463 "nand - NAND sub-system\n",
464 "info - show available NAND devices\n"
465 "nand device [dev] - show or set current device\n"
466 "nand read[.jffs2] - addr off|partition size\n"
467 "nand write[.jffs2] - addr off|partition size - read/write `size' bytes starting\n"
468 " at offset `off' to/from memory address `addr'\n"
469 "nand erase [clean] [off size] - erase `size' bytes from\n"
470 " offset `off' (entire device if not specified)\n"
471 "nand bad - show bad blocks\n"
472 "nand dump[.oob] off - dump page\n"
473 "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
474 "nand markbad off - mark bad block at offset (UNSAFE)\n"
475 "nand biterr off - make a bit error at offset (UNSAFE)\n"
476 "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
477 "nand unlock [offset] [size] - unlock section\n");
479 static int nand_load_image(cmd_tbl_t
*cmdtp
, nand_info_t
*nand
,
480 ulong offset
, ulong addr
, char *cmd
)
488 s
= strchr(cmd
, '.');
490 (!strcmp(s
, ".jffs2") || !strcmp(s
, ".e") || !strcmp(s
, ".i")))
493 printf("\nLoading from %s, offset 0x%lx\n", nand
->name
, offset
);
495 cnt
= nand
->oobblock
;
497 nand_read_options_t opts
;
498 memset(&opts
, 0, sizeof(opts
));
499 opts
.buffer
= (u_char
*) addr
;
501 opts
.offset
= offset
;
503 r
= nand_read_opts(nand
, &opts
);
505 r
= nand_read(nand
, offset
, &cnt
, (u_char
*) addr
);
509 puts("** Read error\n");
510 show_boot_progress (-56);
513 show_boot_progress (56);
515 hdr
= (image_header_t
*) addr
;
517 if (ntohl(hdr
->ih_magic
) != IH_MAGIC
) {
518 printf("\n** Bad Magic Number 0x%x **\n", hdr
->ih_magic
);
519 show_boot_progress (-57);
522 show_boot_progress (57);
524 print_image_hdr(hdr
);
526 cnt
= (ntohl(hdr
->ih_size
) + sizeof (image_header_t
));
528 nand_read_options_t opts
;
529 memset(&opts
, 0, sizeof(opts
));
530 opts
.buffer
= (u_char
*) addr
;
532 opts
.offset
= offset
;
534 r
= nand_read_opts(nand
, &opts
);
536 r
= nand_read(nand
, offset
, &cnt
, (u_char
*) addr
);
540 puts("** Read error\n");
541 show_boot_progress (-58);
544 show_boot_progress (58);
546 /* Loading ok, update default load address */
550 /* Check if we should attempt an auto-start */
551 if (((ep
= getenv("autostart")) != NULL
) && (strcmp(ep
, "yes") == 0)) {
553 extern int do_bootm(cmd_tbl_t
*, int, int, char *[]);
556 local_args
[1] = NULL
;
558 printf("Automatic boot of image at addr 0x%08lx ...\n", addr
);
560 do_bootm(cmdtp
, 0, 1, local_args
);
566 int do_nandboot(cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
568 char *boot_device
= NULL
;
570 ulong addr
, offset
= 0;
571 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
572 struct mtd_device
*dev
;
573 struct part_info
*part
;
577 char *p
= (argc
== 2) ? argv
[1] : argv
[2];
578 if (!(str2long(p
, &addr
)) && (mtdparts_init() == 0) &&
579 (find_dev_and_part(p
, &dev
, &pnum
, &part
) == 0)) {
580 if (dev
->id
->type
!= MTD_DEV_TYPE_NAND
) {
581 puts("Not a NAND device\n");
587 addr
= simple_strtoul(argv
[1], NULL
, 16);
589 addr
= CFG_LOAD_ADDR
;
590 return nand_load_image(cmdtp
, &nand_info
[dev
->id
->num
],
591 part
->offset
, addr
, argv
[0]);
596 show_boot_progress(52);
599 addr
= CFG_LOAD_ADDR
;
600 boot_device
= getenv("bootdevice");
603 addr
= simple_strtoul(argv
[1], NULL
, 16);
604 boot_device
= getenv("bootdevice");
607 addr
= simple_strtoul(argv
[1], NULL
, 16);
608 boot_device
= argv
[2];
611 addr
= simple_strtoul(argv
[1], NULL
, 16);
612 boot_device
= argv
[2];
613 offset
= simple_strtoul(argv
[3], NULL
, 16);
616 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
619 printf("Usage:\n%s\n", cmdtp
->usage
);
620 show_boot_progress(-53);
624 show_boot_progress(53);
626 puts("\n** No boot device **\n");
627 show_boot_progress(-54);
630 show_boot_progress(54);
632 idx
= simple_strtoul(boot_device
, NULL
, 16);
634 if (idx
< 0 || idx
>= CFG_MAX_NAND_DEVICE
|| !nand_info
[idx
].name
) {
635 printf("\n** Device %d not available\n", idx
);
636 show_boot_progress(-55);
639 show_boot_progress(55);
641 return nand_load_image(cmdtp
, &nand_info
[idx
], offset
, addr
, argv
[0]);
644 U_BOOT_CMD(nboot
, 4, 1, do_nandboot
,
645 "nboot - boot from NAND device\n",
646 "[.jffs2] [partition] | [[[loadAddr] dev] offset]\n");
650 #else /* CFG_NAND_LEGACY */
653 * Legacy NAND support - to be phased out
659 #include <watchdog.h>
661 #ifdef CONFIG_show_boot_progress
662 # include <status_led.h>
663 # define show_boot_progress(arg) show_boot_progress(arg)
665 # define show_boot_progress(arg)
668 #if defined(CONFIG_CMD_NAND)
669 #include <linux/mtd/nand_legacy.h>
671 #include <linux/mtd/nand_ids.h>
672 #include <jffs2/jffs2.h>
675 #ifdef CONFIG_OMAP1510
676 void archflashwp(void *archdata
, int wp
);
679 #define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
684 /* ****************** WARNING *********************
685 * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
686 * erase (or at least attempt to erase) blocks that are marked
687 * bad. This can be very handy if you are _sure_ that the block
688 * is OK, say because you marked a good block bad to test bad
689 * block handling and you are done testing, or if you have
690 * accidentally marked blocks bad.
692 * Erasing factory marked bad blocks is a _bad_ idea. If the
693 * erase succeeds there is no reliable way to find them again,
694 * and attempting to program or erase bad blocks can affect
695 * the data in _other_ (good) blocks.
697 #define ALLOW_ERASE_BAD_DEBUG 0
699 #define CONFIG_MTD_NAND_ECC /* enable ECC */
700 #define CONFIG_MTD_NAND_ECC_JFFS2
702 /* bits for nand_legacy_rw() `cmd'; or together as needed */
703 #define NANDRW_READ 0x01
704 #define NANDRW_WRITE 0x00
705 #define NANDRW_JFFS2 0x02
706 #define NANDRW_JFFS2_SKIP 0x04
709 * Imports from nand_legacy.c
711 extern struct nand_chip nand_dev_desc
[CFG_MAX_NAND_DEVICE
];
712 extern int curr_device
;
713 extern int nand_legacy_erase(struct nand_chip
*nand
, size_t ofs
,
714 size_t len
, int clean
);
715 extern int nand_legacy_rw(struct nand_chip
*nand
, int cmd
, size_t start
,
716 size_t len
, size_t *retlen
, u_char
*buf
);
717 extern void nand_print(struct nand_chip
*nand
);
718 extern void nand_print_bad(struct nand_chip
*nand
);
719 extern int nand_read_oob(struct nand_chip
*nand
, size_t ofs
,
720 size_t len
, size_t *retlen
, u_char
*buf
);
721 extern int nand_write_oob(struct nand_chip
*nand
, size_t ofs
,
722 size_t len
, size_t *retlen
, const u_char
*buf
);
725 int do_nand (cmd_tbl_t
* cmdtp
, int flag
, int argc
, char *argv
[])
732 printf ("Usage:\n%s\n", cmdtp
->usage
);
735 if (strcmp (argv
[1], "info") == 0) {
740 for (i
= 0; i
< CFG_MAX_NAND_DEVICE
; ++i
) {
741 if (nand_dev_desc
[i
].ChipID
==
743 continue; /* list only known devices */
744 printf ("Device %d: ", i
);
745 nand_print (&nand_dev_desc
[i
]);
749 } else if (strcmp (argv
[1], "device") == 0) {
750 if ((curr_device
< 0)
751 || (curr_device
>= CFG_MAX_NAND_DEVICE
)) {
752 puts ("\nno devices available\n");
755 printf ("\nDevice %d: ", curr_device
);
756 nand_print (&nand_dev_desc
[curr_device
]);
759 } else if (strcmp (argv
[1], "bad") == 0) {
760 if ((curr_device
< 0)
761 || (curr_device
>= CFG_MAX_NAND_DEVICE
)) {
762 puts ("\nno devices available\n");
765 printf ("\nDevice %d bad blocks:\n", curr_device
);
766 nand_print_bad (&nand_dev_desc
[curr_device
]);
770 printf ("Usage:\n%s\n", cmdtp
->usage
);
773 if (strcmp (argv
[1], "device") == 0) {
774 int dev
= (int) simple_strtoul (argv
[2], NULL
, 10);
776 printf ("\nDevice %d: ", dev
);
777 if (dev
>= CFG_MAX_NAND_DEVICE
) {
778 puts ("unknown device\n");
781 nand_print (&nand_dev_desc
[dev
]);
782 /*nand_print (dev); */
784 if (nand_dev_desc
[dev
].ChipID
== NAND_ChipID_UNKNOWN
) {
790 puts ("... is now current device\n");
793 } else if (strcmp (argv
[1], "erase") == 0
794 && strcmp (argv
[2], "clean") == 0) {
795 struct nand_chip
*nand
= &nand_dev_desc
[curr_device
];
797 ulong size
= nand
->totlen
;
800 printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device
, off
, size
);
802 ret
= nand_legacy_erase (nand
, off
, size
, 1);
804 printf ("%s\n", ret
? "ERROR" : "OK");
809 printf ("Usage:\n%s\n", cmdtp
->usage
);
812 /* at least 4 args */
814 if (strncmp (argv
[1], "read", 4) == 0 ||
815 strncmp (argv
[1], "write", 5) == 0) {
816 ulong addr
= simple_strtoul (argv
[2], NULL
, 16);
817 ulong off
= simple_strtoul (argv
[3], NULL
, 16);
818 ulong size
= simple_strtoul (argv
[4], NULL
, 16);
819 int cmd
= (strncmp (argv
[1], "read", 4) == 0) ?
820 NANDRW_READ
: NANDRW_WRITE
;
822 char *cmdtail
= strchr (argv
[1], '.');
824 if (cmdtail
&& !strncmp (cmdtail
, ".oob", 2)) {
825 /* read out-of-band data */
826 if (cmd
& NANDRW_READ
) {
827 ret
= nand_read_oob (nand_dev_desc
+ curr_device
,
828 off
, size
, (size_t *) & total
,
831 ret
= nand_write_oob (nand_dev_desc
+ curr_device
,
832 off
, size
, (size_t *) & total
,
836 } else if (cmdtail
&& !strncmp (cmdtail
, ".jffs2", 2))
837 cmd
|= NANDRW_JFFS2
; /* skip bad blocks */
838 else if (cmdtail
&& !strncmp (cmdtail
, ".jffs2s", 2)) {
839 cmd
|= NANDRW_JFFS2
; /* skip bad blocks (on read too) */
840 if (cmd
& NANDRW_READ
)
841 cmd
|= NANDRW_JFFS2_SKIP
; /* skip bad blocks (on read too) */
844 /* need ".e" same as ".j" for compatibility with older units */
845 else if (cmdtail
&& !strcmp (cmdtail
, ".e"))
846 cmd
|= NANDRW_JFFS2
; /* skip bad blocks */
848 #ifdef CFG_NAND_SKIP_BAD_DOT_I
849 /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
850 /* ".i" for image -> read skips bad block (no 0xff) */
851 else if (cmdtail
&& !strcmp (cmdtail
, ".i")) {
852 cmd
|= NANDRW_JFFS2
; /* skip bad blocks (on read too) */
853 if (cmd
& NANDRW_READ
)
854 cmd
|= NANDRW_JFFS2_SKIP
; /* skip bad blocks (on read too) */
856 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
858 printf ("Usage:\n%s\n", cmdtp
->usage
);
862 printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
863 (cmd
& NANDRW_READ
) ? "read" : "write",
864 curr_device
, off
, size
);
866 ret
= nand_legacy_rw (nand_dev_desc
+ curr_device
,
871 printf (" %d bytes %s: %s\n", total
,
872 (cmd
& NANDRW_READ
) ? "read" : "written",
873 ret
? "ERROR" : "OK");
876 } else if (strcmp (argv
[1], "erase") == 0 &&
877 (argc
== 4 || strcmp ("clean", argv
[2]) == 0)) {
878 int clean
= argc
== 5;
880 simple_strtoul (argv
[2 + clean
], NULL
, 16);
882 simple_strtoul (argv
[3 + clean
], NULL
, 16);
885 printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
886 curr_device
, off
, size
);
888 ret
= nand_legacy_erase (nand_dev_desc
+ curr_device
,
891 printf ("%s\n", ret
? "ERROR" : "OK");
895 printf ("Usage:\n%s\n", cmdtp
->usage
);
905 "nand - legacy NAND sub-system\n",
906 "info - show available NAND devices\n"
907 "nand device [dev] - show or set current device\n"
908 "nand read[.jffs2[s]] addr off size\n"
909 "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
910 " at offset `off' to/from memory address `addr'\n"
911 "nand erase [clean] [off size] - erase `size' bytes from\n"
912 " offset `off' (entire device if not specified)\n"
913 "nand bad - show bad blocks\n"
914 "nand read.oob addr off size - read out-of-band data\n"
915 "nand write.oob addr off size - read out-of-band data\n"
918 int do_nandboot (cmd_tbl_t
*cmdtp
, int flag
, int argc
, char *argv
[])
920 char *boot_device
= NULL
;
928 show_boot_progress (52);
931 addr
= CFG_LOAD_ADDR
;
932 boot_device
= getenv ("bootdevice");
935 addr
= simple_strtoul(argv
[1], NULL
, 16);
936 boot_device
= getenv ("bootdevice");
939 addr
= simple_strtoul(argv
[1], NULL
, 16);
940 boot_device
= argv
[2];
943 addr
= simple_strtoul(argv
[1], NULL
, 16);
944 boot_device
= argv
[2];
945 offset
= simple_strtoul(argv
[3], NULL
, 16);
948 printf ("Usage:\n%s\n", cmdtp
->usage
);
949 show_boot_progress (-53);
953 show_boot_progress (53);
955 puts ("\n** No boot device **\n");
956 show_boot_progress (-54);
959 show_boot_progress (54);
961 dev
= simple_strtoul(boot_device
, &ep
, 16);
963 if ((dev
>= CFG_MAX_NAND_DEVICE
) ||
964 (nand_dev_desc
[dev
].ChipID
== NAND_ChipID_UNKNOWN
)) {
965 printf ("\n** Device %d not available\n", dev
);
966 show_boot_progress (-55);
969 show_boot_progress (55);
971 printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
972 dev
, nand_dev_desc
[dev
].name
, nand_dev_desc
[dev
].IO_ADDR
,
975 if (nand_legacy_rw (nand_dev_desc
+ dev
, NANDRW_READ
, offset
,
976 SECTORSIZE
, NULL
, (u_char
*)addr
)) {
977 printf ("** Read error on %d\n", dev
);
978 show_boot_progress (-56);
981 show_boot_progress (56);
983 hdr
= (image_header_t
*)addr
;
985 if (ntohl(hdr
->ih_magic
) == IH_MAGIC
) {
987 print_image_hdr (hdr
);
989 cnt
= (ntohl(hdr
->ih_size
) + sizeof(image_header_t
));
992 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr
->ih_magic
));
993 show_boot_progress (-57);
996 show_boot_progress (57);
998 if (nand_legacy_rw (nand_dev_desc
+ dev
, NANDRW_READ
,
999 offset
+ SECTORSIZE
, cnt
, NULL
,
1000 (u_char
*)(addr
+SECTORSIZE
))) {
1001 printf ("** Read error on %d\n", dev
);
1002 show_boot_progress (-58);
1005 show_boot_progress (58);
1007 /* Loading ok, update default load address */
1011 /* Check if we should attempt an auto-start */
1012 if (((ep
= getenv("autostart")) != NULL
) && (strcmp(ep
,"yes") == 0)) {
1013 char *local_args
[2];
1014 extern int do_bootm (cmd_tbl_t
*, int, int, char *[]);
1016 local_args
[0] = argv
[0];
1017 local_args
[1] = NULL
;
1019 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr
);
1021 do_bootm (cmdtp
, 0, 1, local_args
);
1028 nboot
, 4, 1, do_nandboot
,
1029 "nboot - boot from NAND device\n",
1035 #endif /* CFG_NAND_LEGACY */