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 == NAND_ChipID_UNKNOWN)
704 continue; /* list only known devices */
705 printf ("Device %d: ", i);
706 nand_print(&nand_dev_desc[i]);
710 } else if (strcmp(argv[1],"device") == 0) {
711 if ((curr_device < 0) || (curr_device >= CFG_MAX_NAND_DEVICE)) {
712 puts ("\nno devices available\n");
715 printf ("\nDevice %d: ", curr_device);
716 nand_print(&nand_dev_desc[curr_device]);
719 } else if (strcmp(argv[1],"bad") == 0) {
720 if ((curr_device < 0) || (curr_device >= CFG_MAX_NAND_DEVICE)) {
721 puts ("\nno devices available\n");
724 printf ("\nDevice %d bad blocks:\n", curr_device);
725 nand_print_bad(&nand_dev_desc[curr_device]);
729 printf ("Usage:\n%s\n", cmdtp->usage);
732 if (strcmp(argv[1],"device") == 0) {
733 int dev = (int)simple_strtoul(argv[2], NULL, 10);
735 printf ("\nDevice %d: ", dev);
736 if (dev >= CFG_MAX_NAND_DEVICE) {
737 puts ("unknown device\n");
740 nand_print(&nand_dev_desc[dev]);
741 /*nand_print (dev);*/
743 if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
749 puts ("... is now current device\n");
753 else if (strcmp(argv[1],"erase") == 0 && strcmp(argv[2], "clean") == 0) {
754 struct nand_chip* nand = &nand_dev_desc[curr_device];
756 ulong size = nand->totlen;
759 printf ("\nNAND erase: device %d offset %ld, size %ld ... ",
760 curr_device, off, size);
762 ret = nand_legacy_erase (nand, off, size, 1);
764 printf("%s\n", ret ? "ERROR" : "OK");
769 printf ("Usage:\n%s\n", cmdtp->usage);
772 /* at least 4 args */
774 if (strncmp(argv[1], "read", 4) == 0 ||
775 strncmp(argv[1], "write", 5) == 0) {
776 ulong addr = simple_strtoul(argv[2], NULL, 16);
777 ulong off = simple_strtoul(argv[3], NULL, 16);
778 ulong size = simple_strtoul(argv[4], NULL, 16);
779 int cmd = (strncmp(argv[1], "read", 4) == 0) ?
780 NANDRW_READ : NANDRW_WRITE;
782 char* cmdtail = strchr(argv[1], '.');
784 if (cmdtail && !strncmp(cmdtail, ".oob", 2)) {
785 /* read out-of-band data */
786 if (cmd & NANDRW_READ) {
787 ret = nand_read_oob(nand_dev_desc + curr_device,
788 off, size, (size_t *)&total,
792 ret = nand_write_oob(nand_dev_desc + curr_device,
793 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, cmd, off, size,
829 (size_t *)&total, (u_char*)addr);
831 printf (" %d bytes %s: %s\n", total,
832 (cmd & NANDRW_READ) ? "read" : "written",
833 ret ? "ERROR" : "OK");
836 } else if (strcmp(argv[1],"erase") == 0 &&
837 (argc == 4 || strcmp("clean", argv[2]) == 0)) {
838 int clean = argc == 5;
839 ulong off = simple_strtoul(argv[2 + clean], NULL, 16);
840 ulong size = simple_strtoul(argv[3 + clean], NULL, 16);
843 printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
844 curr_device, off, size);
846 ret = nand_legacy_erase (nand_dev_desc + curr_device,
849 printf("%s\n", ret ? "ERROR" : "OK");
853 printf ("Usage:\n%s\n", cmdtp->usage);
863 "nand - legacy NAND sub-system\n",
864 "info - show available NAND devices\n"
865 "nand device [dev] - show or set current device\n"
866 "nand read[.jffs2[s]] addr off size\n"
867 "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
868 " at offset `off' to/from memory address `addr'\n"
869 "nand erase [clean] [off size] - erase `size' bytes from\n"
870 " offset `off' (entire device if not specified)\n"
871 "nand bad - show bad blocks\n"
872 "nand read.oob addr off size - read out-of-band data\n"
873 "nand write.oob addr off size - read out-of-band data\n"
876 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
878 char *boot_device = NULL;
888 addr = CFG_LOAD_ADDR;
889 boot_device = getenv ("bootdevice");
892 addr = simple_strtoul(argv[1], NULL, 16);
893 boot_device = getenv ("bootdevice");
896 addr = simple_strtoul(argv[1], NULL, 16);
897 boot_device = argv[2];
900 addr = simple_strtoul(argv[1], NULL, 16);
901 boot_device = argv[2];
902 offset = simple_strtoul(argv[3], NULL, 16);
905 printf ("Usage:\n%s\n", cmdtp->usage);
906 SHOW_BOOT_PROGRESS (-1);
911 puts ("\n** No boot device **\n");
912 SHOW_BOOT_PROGRESS (-1);
916 dev = simple_strtoul(boot_device, &ep, 16);
918 if ((dev >= CFG_MAX_NAND_DEVICE) ||
919 (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
920 printf ("\n** Device %d not available\n", dev);
921 SHOW_BOOT_PROGRESS (-1);
925 printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
926 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
929 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
930 SECTORSIZE, NULL, (u_char *)addr)) {
931 printf ("** Read error on %d\n", dev);
932 SHOW_BOOT_PROGRESS (-1);
936 hdr = (image_header_t *)addr;
938 if (ntohl(hdr->ih_magic) == IH_MAGIC) {
940 print_image_hdr (hdr);
942 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
945 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
946 SHOW_BOOT_PROGRESS (-1);
950 if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
951 offset + SECTORSIZE, cnt, NULL,
952 (u_char *)(addr+SECTORSIZE))) {
953 printf ("** Read error on %d\n", dev);
954 SHOW_BOOT_PROGRESS (-1);
958 /* Loading ok, update default load address */
962 /* Check if we should attempt an auto-start */
963 if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
965 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
967 local_args[0] = argv[0];
968 local_args[1] = NULL;
970 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
972 do_bootm (cmdtp, 0, 1, local_args);
979 nboot, 4, 1, do_nandboot,
980 "nboot - boot from NAND device\n",
984 #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */
986 #endif /* CFG_NAND_LEGACY */