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) || defined(CONFIG_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_CMD_JFFS2)) \
40 && defined(CONFIG_JFFS2_CMDLINE)
42 /* parition handling routines */
43 int mtdparts_init(void);
44 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num);
45 int find_dev_and_part(const char *id, struct mtd_device **dev,
46 u8 *part_num, struct part_info **part);
49 extern nand_info_t nand_info[]; /* info for NAND chips */
51 static int nand_dump_oob(nand_info_t *nand, ulong off)
56 static int nand_dump(nand_info_t *nand, ulong off)
61 buf = malloc(nand->oobblock + nand->oobsize);
63 puts("No memory for page buffer\n");
66 off &= ~(nand->oobblock - 1);
67 i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize);
69 printf("Error (%d) reading page %08x\n", i, off);
73 printf("Page %08x dump:\n", off);
74 i = nand->oobblock >> 4; p = buf;
76 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x"
77 " %02x %02x %02x %02x %02x %02x %02x %02x\n",
78 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
79 p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]);
83 i = nand->oobsize >> 3;
85 printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
86 p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
94 /* ------------------------------------------------------------------------- */
96 static inline int str2long(char *p, ulong *num)
100 *num = simple_strtoul(p, &endptr, 16);
101 return (*p != '\0' && *endptr == '\0') ? 1 : 0;
105 arg_off_size(int argc, char *argv[], nand_info_t *nand, ulong *off, ulong *size)
107 int idx = nand_curr_device;
108 #if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) || defined(CONFIG_CMD_JFFS2)) \
109 && defined(CONFIG_JFFS2_CMDLINE)
110 struct mtd_device *dev;
111 struct part_info *part;
114 if (argc >= 1 && !(str2long(argv[0], off))) {
115 if ((mtdparts_init() == 0) &&
116 (find_dev_and_part(argv[0], &dev, &pnum, &part) == 0)) {
117 if (dev->id->type != MTD_DEV_TYPE_NAND) {
118 puts("not a NAND device\n");
123 if (!(str2long(argv[1], size))) {
124 printf("'%s' is not a number\n", argv[1]);
127 if (*size > part->size)
133 *nand = nand_info[idx];
140 if (!(str2long(argv[0], off))) {
141 printf("'%s' is not a number\n", argv[0]);
149 if (!(str2long(argv[1], size))) {
150 printf("'%s' is not a number\n", argv[1]);
154 *size = nand->size - *off;
157 #if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) || defined(CONFIG_CMD_JFFS2)) \
158 && defined(CONFIG_JFFS2_CMDLINE)
161 printf("device %d ", idx);
162 if (*size == nand->size)
163 puts("whole chip\n");
165 printf("offset 0x%x, size 0x%x\n", *off, *size);
169 int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
172 ulong addr, off, size;
176 const char *quiet_str = getenv("quiet");
178 /* at least two arguments please */
183 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
187 if (strcmp(cmd, "info") == 0) {
190 for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) {
191 if (nand_info[i].name)
192 printf("Device %d: %s, sector size %lu KiB\n",
193 i, nand_info[i].name,
194 nand_info[i].erasesize >> 10);
199 if (strcmp(cmd, "device") == 0) {
202 if ((nand_curr_device < 0) ||
203 (nand_curr_device >= CFG_MAX_NAND_DEVICE))
204 puts("\nno devices available\n");
206 printf("\nDevice %d: %s\n", nand_curr_device,
207 nand_info[nand_curr_device].name);
210 dev = (int)simple_strtoul(argv[2], NULL, 10);
211 if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) {
212 puts("No such device\n");
215 printf("Device %d: %s", dev, nand_info[dev].name);
216 puts("... is now current device\n");
217 nand_curr_device = dev;
219 #ifdef CFG_NAND_SELECT_DEVICE
221 * Select the chip in the board/cpu specific driver
223 board_nand_select_device(nand_info[dev].priv, dev);
229 if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 &&
230 strncmp(cmd, "dump", 4) != 0 &&
231 strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 &&
232 strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 &&
233 strcmp(cmd, "biterr") != 0 &&
234 strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 )
237 /* the following commands operate on the current device */
238 if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE ||
239 !nand_info[nand_curr_device].name) {
240 puts("\nno devices available\n");
243 nand = &nand_info[nand_curr_device];
245 if (strcmp(cmd, "bad") == 0) {
246 printf("\nDevice %d bad blocks:\n", nand_curr_device);
247 for (off = 0; off < nand->size; off += nand->erasesize)
248 if (nand_block_isbad(nand, off))
249 printf(" %08x\n", off);
256 * nand erase [clean] [off size]
258 if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) {
259 nand_erase_options_t opts;
260 /* "clean" at index 2 means request to write cleanmarker */
261 int clean = argc > 2 && !strcmp("clean", argv[2]);
262 int o = clean ? 3 : 2;
263 int scrub = !strcmp(cmd, "scrub");
265 printf("\nNAND %s: ", scrub ? "scrub" : "erase");
266 /* skip first two or three arguments, look for offset and size */
267 if (arg_off_size(argc - o, argv + o, nand, &off, &size) != 0)
270 memset(&opts, 0, sizeof(opts));
278 "scrub option will erase all factory set "
281 "There is no reliable way to recover them.\n"
283 "Use this command only for testing purposes "
286 "are sure of what you are doing!\n"
287 "\nReally scrub this NAND flash? <y/N>\n");
289 if (getc() == 'y' && getc() == '\r') {
292 puts("scrub aborted\n");
296 ret = nand_erase_opts(nand, &opts);
297 printf("%s\n", ret ? "ERROR" : "OK");
299 return ret == 0 ? 0 : 1;
302 if (strncmp(cmd, "dump", 4) == 0) {
306 s = strchr(cmd, '.');
307 off = (int)simple_strtoul(argv[2], NULL, 16);
309 if (s != NULL && strcmp(s, ".oob") == 0)
310 ret = nand_dump_oob(nand, off);
312 ret = nand_dump(nand, off);
314 return ret == 0 ? 1 : 0;
319 if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
325 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
327 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
328 printf("\nNAND %s: ", read ? "read" : "write");
329 if (arg_off_size(argc - 3, argv + 3, nand, &off, &size) != 0)
332 s = strchr(cmd, '.');
334 (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
337 nand_read_options_t opts;
338 memset(&opts, 0, sizeof(opts));
339 opts.buffer = (u_char*) addr;
343 ret = nand_read_opts(nand, &opts);
346 nand_write_options_t opts;
347 memset(&opts, 0, sizeof(opts));
348 opts.buffer = (u_char*) addr;
351 /* opts.forcejffs2 = 1; */
355 ret = nand_write_opts(nand, &opts);
359 ret = nand_read(nand, off, &size, (u_char *)addr);
361 ret = nand_write(nand, off, &size, (u_char *)addr);
364 printf(" %d bytes %s: %s\n", size,
365 read ? "read" : "written", ret ? "ERROR" : "OK");
367 return ret == 0 ? 0 : 1;
370 if (strcmp(cmd, "markbad") == 0) {
371 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
373 int ret = nand->block_markbad(nand, addr);
375 printf("block 0x%08lx successfully marked as bad\n",
379 printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
384 if (strcmp(cmd, "biterr") == 0) {
389 if (strcmp(cmd, "lock") == 0) {
393 if (!strcmp("tight", argv[2]))
395 if (!strcmp("status", argv[2]))
400 ulong block_start = 0;
402 int last_status = -1;
404 struct nand_chip *nand_chip = nand->priv;
405 /* check the WP bit */
406 nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
407 printf("device is %swrite protected\n",
408 (nand_chip->read_byte(nand) & 0x80 ?
411 for (off = 0; off < nand->size; off += nand->oobblock) {
412 int s = nand_get_lock_status(nand, off);
414 /* print message only if status has changed
417 if (off == nand->size - nand->oobblock
418 || (s != last_status && off != 0)) {
420 printf("%08x - %08x: %8d pages %s%s%s\n",
423 (off-block_start)/nand->oobblock,
424 ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
425 ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
426 ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
432 if (!nand_lock(nand, tight)) {
433 puts("NAND flash successfully locked\n");
435 puts("Error locking NAND flash\n");
442 if (strcmp(cmd, "unlock") == 0) {
443 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
446 if (!nand_unlock(nand, off, size)) {
447 puts("NAND flash successfully unlocked\n");
449 puts("Error unlocking NAND flash, "
450 "write and erase will probably fail\n");
457 printf("Usage:\n%s\n", cmdtp->usage);
461 U_BOOT_CMD(nand, 5, 1, do_nand,
462 "nand - NAND sub-system\n",
463 "info - show available NAND devices\n"
464 "nand device [dev] - show or set current device\n"
465 "nand read[.jffs2] - addr off|partition size\n"
466 "nand write[.jffs2] - addr off|partiton size - read/write `size' bytes starting\n"
467 " at offset `off' to/from memory address `addr'\n"
468 "nand erase [clean] [off size] - erase `size' bytes from\n"
469 " offset `off' (entire device if not specified)\n"
470 "nand bad - show bad blocks\n"
471 "nand dump[.oob] off - dump page\n"
472 "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
473 "nand markbad off - mark bad block at offset (UNSAFE)\n"
474 "nand biterr off - make a bit error at offset (UNSAFE)\n"
475 "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
476 "nand unlock [offset] [size] - unlock section\n");
478 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
479 ulong offset, ulong addr, char *cmd)
486 printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
488 cnt = nand->oobblock;
489 r = nand_read(nand, offset, &cnt, (u_char *) addr);
491 puts("** Read error\n");
492 SHOW_BOOT_PROGRESS(-1);
496 hdr = (image_header_t *) addr;
498 if (ntohl(hdr->ih_magic) != IH_MAGIC) {
499 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
500 SHOW_BOOT_PROGRESS(-1);
504 print_image_hdr(hdr);
506 cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
508 r = nand_read(nand, offset, &cnt, (u_char *) addr);
510 puts("** Read error\n");
511 SHOW_BOOT_PROGRESS(-1);
515 /* Loading ok, update default load address */
519 /* Check if we should attempt an auto-start */
520 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
522 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
525 local_args[1] = NULL;
527 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
529 do_bootm(cmdtp, 0, 1, local_args);
535 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
537 char *boot_device = NULL;
539 ulong addr, offset = 0;
540 #if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) || defined(CONFIG_CMD_JFFS2)) \
541 && defined(CONFIG_JFFS2_CMDLINE)
542 struct mtd_device *dev;
543 struct part_info *part;
547 char *p = (argc == 2) ? argv[1] : argv[2];
548 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
549 (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
550 if (dev->id->type != MTD_DEV_TYPE_NAND) {
551 puts("Not a NAND device\n");
557 addr = simple_strtoul(argv[2], NULL, 16);
559 addr = CFG_LOAD_ADDR;
560 return nand_load_image(cmdtp, &nand_info[dev->id->num],
561 part->offset, addr, argv[0]);
568 addr = CFG_LOAD_ADDR;
569 boot_device = getenv("bootdevice");
572 addr = simple_strtoul(argv[1], NULL, 16);
573 boot_device = getenv("bootdevice");
576 addr = simple_strtoul(argv[1], NULL, 16);
577 boot_device = argv[2];
580 addr = simple_strtoul(argv[1], NULL, 16);
581 boot_device = argv[2];
582 offset = simple_strtoul(argv[3], NULL, 16);
585 #if ((CONFIG_COMMANDS & CFG_CMD_JFFS2) || defined(CONFIG_CMD_JFFS2)) \
586 && defined(CONFIG_JFFS2_CMDLINE)
589 printf("Usage:\n%s\n", cmdtp->usage);
590 SHOW_BOOT_PROGRESS(-1);
595 puts("\n** No boot device **\n");
596 SHOW_BOOT_PROGRESS(-1);
600 idx = simple_strtoul(boot_device, NULL, 16);
602 if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
603 printf("\n** Device %d not available\n", idx);
604 SHOW_BOOT_PROGRESS(-1);
608 return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
611 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
612 "nboot - boot from NAND device\n",
613 "[partition] | [[[loadAddr] dev] offset]\n");
615 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
617 #else /* CFG_NAND_LEGACY */
620 * Legacy NAND support - to be phased out
626 #include <watchdog.h>
628 #ifdef CONFIG_SHOW_BOOT_PROGRESS
629 # include <status_led.h>
630 # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg)
632 # define SHOW_BOOT_PROGRESS(arg)
635 #if (CONFIG_COMMANDS & CFG_CMD_NAND) || defined(CONFIG_CMD_NAND)
636 #include <linux/mtd/nand_legacy.h>
638 #include <linux/mtd/nand_ids.h>
639 #include <jffs2/jffs2.h>
642 #ifdef CONFIG_OMAP1510
643 void archflashwp(void *archdata, int wp);
646 #define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1)))
651 /* ****************** WARNING *********************
652 * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
653 * erase (or at least attempt to erase) blocks that are marked
654 * bad. This can be very handy if you are _sure_ that the block
655 * is OK, say because you marked a good block bad to test bad
656 * block handling and you are done testing, or if you have
657 * accidentally marked blocks bad.
659 * Erasing factory marked bad blocks is a _bad_ idea. If the
660 * erase succeeds there is no reliable way to find them again,
661 * and attempting to program or erase bad blocks can affect
662 * the data in _other_ (good) blocks.
664 #define ALLOW_ERASE_BAD_DEBUG 0
666 #define CONFIG_MTD_NAND_ECC /* enable ECC */
667 #define CONFIG_MTD_NAND_ECC_JFFS2
669 /* bits for nand_legacy_rw() `cmd'; or together as needed */
670 #define NANDRW_READ 0x01
671 #define NANDRW_WRITE 0x00
672 #define NANDRW_JFFS2 0x02
673 #define NANDRW_JFFS2_SKIP 0x04
676 * Imports from nand_legacy.c
678 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
679 extern int curr_device;
680 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
681 size_t len, int clean);
682 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
683 size_t len, size_t *retlen, u_char *buf);
684 extern void nand_print(struct nand_chip *nand);
685 extern void nand_print_bad(struct nand_chip *nand);
686 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
687 size_t len, size_t *retlen, u_char *buf);
688 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
689 size_t len, size_t *retlen, const u_char *buf);
692 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
699 printf ("Usage:\n%s\n", cmdtp->usage);
702 if (strcmp (argv[1], "info") == 0) {
707 for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
708 if (nand_dev_desc[i].ChipID ==
710 continue; /* list only known devices */
711 printf ("Device %d: ", i);
712 nand_print (&nand_dev_desc[i]);
716 } else if (strcmp (argv[1], "device") == 0) {
717 if ((curr_device < 0)
718 || (curr_device >= CFG_MAX_NAND_DEVICE)) {
719 puts ("\nno devices available\n");
722 printf ("\nDevice %d: ", curr_device);
723 nand_print (&nand_dev_desc[curr_device]);
726 } else if (strcmp (argv[1], "bad") == 0) {
727 if ((curr_device < 0)
728 || (curr_device >= CFG_MAX_NAND_DEVICE)) {
729 puts ("\nno devices available\n");
732 printf ("\nDevice %d bad blocks:\n", curr_device);
733 nand_print_bad (&nand_dev_desc[curr_device]);
737 printf ("Usage:\n%s\n", cmdtp->usage);
740 if (strcmp (argv[1], "device") == 0) {
741 int dev = (int) simple_strtoul (argv[2], NULL, 10);
743 printf ("\nDevice %d: ", dev);
744 if (dev >= CFG_MAX_NAND_DEVICE) {
745 puts ("unknown device\n");
748 nand_print (&nand_dev_desc[dev]);
749 /*nand_print (dev); */
751 if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
757 puts ("... is now current device\n");
760 } else if (strcmp (argv[1], "erase") == 0
761 && strcmp (argv[2], "clean") == 0) {
762 struct nand_chip *nand = &nand_dev_desc[curr_device];
764 ulong size = nand->totlen;
767 printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
769 ret = nand_legacy_erase (nand, off, size, 1);
771 printf ("%s\n", ret ? "ERROR" : "OK");
776 printf ("Usage:\n%s\n", cmdtp->usage);
779 /* at least 4 args */
781 if (strncmp (argv[1], "read", 4) == 0 ||
782 strncmp (argv[1], "write", 5) == 0) {
783 ulong addr = simple_strtoul (argv[2], NULL, 16);
784 ulong off = simple_strtoul (argv[3], NULL, 16);
785 ulong size = simple_strtoul (argv[4], NULL, 16);
786 int cmd = (strncmp (argv[1], "read", 4) == 0) ?
787 NANDRW_READ : NANDRW_WRITE;
789 char *cmdtail = strchr (argv[1], '.');
791 if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
792 /* read out-of-band data */
793 if (cmd & NANDRW_READ) {
794 ret = nand_read_oob (nand_dev_desc + curr_device,
795 off, size, (size_t *) & total,
798 ret = nand_write_oob (nand_dev_desc + curr_device,
799 off, size, (size_t *) & total,
803 } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
804 cmd |= NANDRW_JFFS2; /* skip bad blocks */
805 else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
806 cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */
807 if (cmd & NANDRW_READ)
808 cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */
811 /* need ".e" same as ".j" for compatibility with older units */
812 else if (cmdtail && !strcmp (cmdtail, ".e"))
813 cmd |= NANDRW_JFFS2; /* skip bad blocks */
815 #ifdef CFG_NAND_SKIP_BAD_DOT_I
816 /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
817 /* ".i" for image -> read skips bad block (no 0xff) */
818 else if (cmdtail && !strcmp (cmdtail, ".i")) {
819 cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */
820 if (cmd & NANDRW_READ)
821 cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */
823 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
825 printf ("Usage:\n%s\n", cmdtp->usage);
829 printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
830 (cmd & NANDRW_READ) ? "read" : "write",
831 curr_device, off, size);
833 ret = nand_legacy_rw (nand_dev_desc + curr_device,
838 printf (" %d bytes %s: %s\n", total,
839 (cmd & NANDRW_READ) ? "read" : "written",
840 ret ? "ERROR" : "OK");
843 } else if (strcmp (argv[1], "erase") == 0 &&
844 (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
845 int clean = argc == 5;
847 simple_strtoul (argv[2 + clean], NULL, 16);
849 simple_strtoul (argv[3 + clean], NULL, 16);
852 printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
853 curr_device, off, size);
855 ret = nand_legacy_erase (nand_dev_desc + curr_device,
858 printf ("%s\n", ret ? "ERROR" : "OK");
862 printf ("Usage:\n%s\n", cmdtp->usage);
872 "nand - legacy NAND sub-system\n",
873 "info - show available NAND devices\n"
874 "nand device [dev] - show or set current device\n"
875 "nand read[.jffs2[s]] addr off size\n"
876 "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
877 " at offset `off' to/from memory address `addr'\n"
878 "nand erase [clean] [off size] - erase `size' bytes from\n"
879 " offset `off' (entire device if not specified)\n"
880 "nand bad - show bad blocks\n"
881 "nand read.oob addr off size - read out-of-band data\n"
882 "nand write.oob addr off size - read out-of-band data\n"
885 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
887 char *boot_device = NULL;
897 addr = CFG_LOAD_ADDR;
898 boot_device = getenv ("bootdevice");
901 addr = simple_strtoul(argv[1], NULL, 16);
902 boot_device = getenv ("bootdevice");
905 addr = simple_strtoul(argv[1], NULL, 16);
906 boot_device = argv[2];
909 addr = simple_strtoul(argv[1], NULL, 16);
910 boot_device = argv[2];
911 offset = simple_strtoul(argv[3], NULL, 16);
914 printf ("Usage:\n%s\n", cmdtp->usage);
915 SHOW_BOOT_PROGRESS (-1);
920 puts ("\n** No boot device **\n");
921 SHOW_BOOT_PROGRESS (-1);
925 dev = simple_strtoul(boot_device, &ep, 16);
927 if ((dev >= CFG_MAX_NAND_DEVICE) ||
928 (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
929 printf ("\n** Device %d not available\n", dev);
930 SHOW_BOOT_PROGRESS (-1);
934 printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
935 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
938 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
939 SECTORSIZE, NULL, (u_char *)addr)) {
940 printf ("** Read error on %d\n", dev);
941 SHOW_BOOT_PROGRESS (-1);
945 hdr = (image_header_t *)addr;
947 if (ntohl(hdr->ih_magic) == IH_MAGIC) {
949 print_image_hdr (hdr);
951 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
954 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
955 SHOW_BOOT_PROGRESS (-1);
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 (-1);
967 /* Loading ok, update default load address */
971 /* Check if we should attempt an auto-start */
972 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
974 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
976 local_args[0] = argv[0];
977 local_args[1] = NULL;
979 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
981 do_bootm (cmdtp, 0, 1, local_args);
988 nboot, 4, 1, do_nandboot,
989 "nboot - boot from NAND device\n",
993 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
995 #endif /* CFG_NAND_LEGACY */