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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 #ifdef CFG_NAND_QUIET
165         int quiet = CFG_NAND_QUIET;
166 #else
167         int quiet = 0;
168 #endif
169         const char *quiet_str = getenv("quiet");
170
171         /* at least two arguments please */
172         if (argc < 2)
173                 goto usage;
174
175         if (quiet_str)
176                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
177
178         cmd = argv[1];
179
180         if (strcmp(cmd, "info") == 0) {
181
182                 putc('\n');
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);
188                 }
189                 return 0;
190         }
191
192         if (strcmp(cmd, "device") == 0) {
193
194                 if (argc < 3) {
195                         if ((nand_curr_device < 0) ||
196                             (nand_curr_device >= CFG_MAX_NAND_DEVICE))
197                                 puts("\nno devices available\n");
198                         else
199                                 printf("\nDevice %d: %s\n", nand_curr_device,
200                                         nand_info[nand_curr_device].name);
201                         return 0;
202                 }
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");
206                         return 1;
207                 }
208                 printf("Device %d: %s", dev, nand_info[dev].name);
209                 puts("... is now current device\n");
210                 nand_curr_device = dev;
211
212 #ifdef CFG_NAND_SELECT_DEVICE
213                 /*
214                  * Select the chip in the board/cpu specific driver
215                  */
216                 board_nand_select_device(nand_info[dev].priv, dev);
217 #endif
218
219                 return 0;
220         }
221
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 )
228                 goto usage;
229
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");
234                 return 1;
235         }
236         nand = &nand_info[nand_curr_device];
237
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);
243                 return 0;
244         }
245
246         /*
247          * Syntax is:
248          *   0    1     2       3    4
249          *   nand erase [clean] [off size]
250          */
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");
257
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)
261                         return 1;
262
263                 memset(&opts, 0, sizeof(opts));
264                 opts.offset = off;
265                 opts.length = size;
266                 opts.jffs2  = clean;
267                 opts.quiet  = quiet;
268
269                 if (scrub) {
270                         puts("Warning: "
271                              "scrub option will erase all factory set "
272                              "bad blocks!\n"
273                              "         "
274                              "There is no reliable way to recover them.\n"
275                              "         "
276                              "Use this command only for testing purposes "
277                              "if you\n"
278                              "         "
279                              "are sure of what you are doing!\n"
280                              "\nReally scrub this NAND flash? <y/N>\n");
281
282                         if (getc() == 'y' && getc() == '\r') {
283                                 opts.scrub = 1;
284                         } else {
285                                 puts("scrub aborted\n");
286                                 return -1;
287                         }
288                 }
289                 ret = nand_erase_opts(nand, &opts);
290                 printf("%s\n", ret ? "ERROR" : "OK");
291
292                 return ret == 0 ? 0 : 1;
293         }
294
295         if (strncmp(cmd, "dump", 4) == 0) {
296                 if (argc < 3)
297                         goto usage;
298
299                 s = strchr(cmd, '.');
300                 off = (int)simple_strtoul(argv[2], NULL, 16);
301
302                 if (s != NULL && strcmp(s, ".oob") == 0)
303                         ret = nand_dump_oob(nand, off);
304                 else
305                         ret = nand_dump(nand, off);
306
307                 return ret == 0 ? 1 : 0;
308
309         }
310
311         /* read write */
312         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
313                 int read;
314
315                 if (argc < 4)
316                         goto usage;
317
318                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
319
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)
323                         return 1;
324
325                 s = strchr(cmd, '.');
326                 if (s != NULL &&
327                     (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) {
328                         if (read) {
329                                 /* read */
330                                 nand_read_options_t opts;
331                                 memset(&opts, 0, sizeof(opts));
332                                 opts.buffer     = (u_char*) addr;
333                                 opts.length     = size;
334                                 opts.offset     = off;
335                                 opts.quiet      = quiet;
336                                 ret = nand_read_opts(nand, &opts);
337                         } else {
338                                 /* write */
339                                 nand_write_options_t opts;
340                                 memset(&opts, 0, sizeof(opts));
341                                 opts.buffer     = (u_char*) addr;
342                                 opts.length     = size;
343                                 opts.offset     = off;
344                                 /* opts.forcejffs2 = 1; */
345                                 opts.pad        = 1;
346                                 opts.blockalign = 1;
347                                 opts.quiet      = quiet;
348                                 ret = nand_write_opts(nand, &opts);
349                         }
350                 } else {
351                         if (read)
352                                 ret = nand_read(nand, off, &size, (u_char *)addr);
353                         else
354                                 ret = nand_write(nand, off, &size, (u_char *)addr);
355                 }
356
357                 printf(" %d bytes %s: %s\n", size,
358                        read ? "read" : "written", ret ? "ERROR" : "OK");
359
360                 return ret == 0 ? 0 : 1;
361         }
362
363         if (strcmp(cmd, "markbad") == 0) {
364                 addr = (ulong)simple_strtoul(argv[2], NULL, 16);
365
366                 int ret = nand->block_markbad(nand, addr);
367                 if (ret == 0) {
368                         printf("block 0x%08lx successfully marked as bad\n",
369                                (ulong) addr);
370                         return 0;
371                 } else {
372                         printf("block 0x%08lx NOT marked as bad! ERROR %d\n",
373                                (ulong) addr, ret);
374                 }
375                 return 1;
376         }
377         if (strcmp(cmd, "biterr") == 0) {
378                 /* todo */
379                 return 1;
380         }
381
382         if (strcmp(cmd, "lock") == 0) {
383                 int tight  = 0;
384                 int status = 0;
385                 if (argc == 3) {
386                         if (!strcmp("tight", argv[2]))
387                                 tight = 1;
388                         if (!strcmp("status", argv[2]))
389                                 status = 1;
390                 }
391
392                 if (status) {
393                         ulong block_start = 0;
394                         ulong off;
395                         int last_status = -1;
396
397                         struct nand_chip *nand_chip = nand->priv;
398                         /* check the WP bit */
399                         nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1);
400                         printf("device is %swrite protected\n",
401                                (nand_chip->read_byte(nand) & 0x80 ?
402                                 "NOT " : "" ) );
403
404                         for (off = 0; off < nand->size; off += nand->oobblock) {
405                                 int s = nand_get_lock_status(nand, off);
406
407                                 /* print message only if status has changed
408                                  * or at end of chip
409                                  */
410                                 if (off == nand->size - nand->oobblock
411                                     || (s != last_status && off != 0))  {
412
413                                         printf("%08x - %08x: %8d pages %s%s%s\n",
414                                                block_start,
415                                                off-1,
416                                                (off-block_start)/nand->oobblock,
417                                                ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""),
418                                                ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""),
419                                                ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : ""));
420                                 }
421
422                                 last_status = s;
423                        }
424                 } else {
425                         if (!nand_lock(nand, tight)) {
426                                 puts("NAND flash successfully locked\n");
427                         } else {
428                                 puts("Error locking NAND flash\n");
429                                 return 1;
430                         }
431                 }
432                 return 0;
433         }
434
435         if (strcmp(cmd, "unlock") == 0) {
436                 if (arg_off_size(argc - 2, argv + 2, nand, &off, &size) < 0)
437                         return 1;
438
439                 if (!nand_unlock(nand, off, size)) {
440                         puts("NAND flash successfully unlocked\n");
441                 } else {
442                         puts("Error unlocking NAND flash, "
443                              "write and erase will probably fail\n");
444                         return 1;
445                 }
446                 return 0;
447         }
448
449 usage:
450         printf("Usage:\n%s\n", cmdtp->usage);
451         return 1;
452 }
453
454 U_BOOT_CMD(nand, 5, 1, do_nand,
455         "nand    - NAND sub-system\n",
456         "info                  - show available NAND devices\n"
457         "nand device [dev]     - show or set current device\n"
458         "nand read[.jffs2]     - addr off|partition size\n"
459         "nand write[.jffs2]    - addr off|partition size - read/write `size' bytes starting\n"
460         "    at offset `off' to/from memory address `addr'\n"
461         "nand erase [clean] [off size] - erase `size' bytes from\n"
462         "    offset `off' (entire device if not specified)\n"
463         "nand bad - show bad blocks\n"
464         "nand dump[.oob] off - dump page\n"
465         "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n"
466         "nand markbad off - mark bad block at offset (UNSAFE)\n"
467         "nand biterr off - make a bit error at offset (UNSAFE)\n"
468         "nand lock [tight] [status] - bring nand to lock state or display locked pages\n"
469         "nand unlock [offset] [size] - unlock section\n");
470
471 static int nand_load_image(cmd_tbl_t *cmdtp, nand_info_t *nand,
472                            ulong offset, ulong addr, char *cmd)
473 {
474         int r;
475         char *ep, *s;
476         ulong cnt;
477         image_header_t *hdr;
478         int jffs2 = 0;
479
480         s = strchr(cmd, '.');
481         if (s != NULL &&
482             (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i")))
483                 jffs2 = 1;
484
485         printf("\nLoading from %s, offset 0x%lx\n", nand->name, offset);
486
487         cnt = nand->oobblock;
488         if (jffs2) {
489                 nand_read_options_t opts;
490                 memset(&opts, 0, sizeof(opts));
491                 opts.buffer     = (u_char*) addr;
492                 opts.length     = cnt;
493                 opts.offset     = offset;
494                 opts.quiet      = 1;
495                 r = nand_read_opts(nand, &opts);
496         } else {
497                 r = nand_read(nand, offset, &cnt, (u_char *) addr);
498         }
499
500         if (r) {
501                 puts("** Read error\n");
502                 show_boot_progress (-56);
503                 return 1;
504         }
505         show_boot_progress (56);
506
507         hdr = (image_header_t *) addr;
508
509         if (ntohl(hdr->ih_magic) != IH_MAGIC) {
510                 printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic);
511                 show_boot_progress (-57);
512                 return 1;
513         }
514         show_boot_progress (57);
515
516         print_image_hdr(hdr);
517
518         cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t));
519         if (jffs2) {
520                 nand_read_options_t opts;
521                 memset(&opts, 0, sizeof(opts));
522                 opts.buffer     = (u_char*) addr;
523                 opts.length     = cnt;
524                 opts.offset     = offset;
525                 opts.quiet      = 1;
526                 r = nand_read_opts(nand, &opts);
527         } else {
528                 r = nand_read(nand, offset, &cnt, (u_char *) addr);
529         }
530
531         if (r) {
532                 puts("** Read error\n");
533                 show_boot_progress (-58);
534                 return 1;
535         }
536         show_boot_progress (58);
537
538         /* Loading ok, update default load address */
539
540         load_addr = addr;
541
542         /* Check if we should attempt an auto-start */
543         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) {
544                 char *local_args[2];
545                 extern int do_bootm(cmd_tbl_t *, int, int, char *[]);
546
547                 local_args[0] = cmd;
548                 local_args[1] = NULL;
549
550                 printf("Automatic boot of image at addr 0x%08lx ...\n", addr);
551
552                 do_bootm(cmdtp, 0, 1, local_args);
553                 return 1;
554         }
555         return 0;
556 }
557
558 int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
559 {
560         char *boot_device = NULL;
561         int idx;
562         ulong addr, offset = 0;
563 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
564         struct mtd_device *dev;
565         struct part_info *part;
566         u8 pnum;
567
568         if (argc >= 2) {
569                 char *p = (argc == 2) ? argv[1] : argv[2];
570                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
571                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
572                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
573                                 puts("Not a NAND device\n");
574                                 return 1;
575                         }
576                         if (argc > 3)
577                                 goto usage;
578                         if (argc == 3)
579                                 addr = simple_strtoul(argv[1], NULL, 16);
580                         else
581                                 addr = CFG_LOAD_ADDR;
582                         return nand_load_image(cmdtp, &nand_info[dev->id->num],
583                                                part->offset, addr, argv[0]);
584                 }
585         }
586 #endif
587
588         show_boot_progress(52);
589         switch (argc) {
590         case 1:
591                 addr = CFG_LOAD_ADDR;
592                 boot_device = getenv("bootdevice");
593                 break;
594         case 2:
595                 addr = simple_strtoul(argv[1], NULL, 16);
596                 boot_device = getenv("bootdevice");
597                 break;
598         case 3:
599                 addr = simple_strtoul(argv[1], NULL, 16);
600                 boot_device = argv[2];
601                 break;
602         case 4:
603                 addr = simple_strtoul(argv[1], NULL, 16);
604                 boot_device = argv[2];
605                 offset = simple_strtoul(argv[3], NULL, 16);
606                 break;
607         default:
608 #if defined(CONFIG_CMD_JFFS2) && defined(CONFIG_JFFS2_CMDLINE)
609 usage:
610 #endif
611                 printf("Usage:\n%s\n", cmdtp->usage);
612                 show_boot_progress(-53);
613                 return 1;
614         }
615
616         show_boot_progress(53);
617         if (!boot_device) {
618                 puts("\n** No boot device **\n");
619                 show_boot_progress(-54);
620                 return 1;
621         }
622         show_boot_progress(54);
623
624         idx = simple_strtoul(boot_device, NULL, 16);
625
626         if (idx < 0 || idx >= CFG_MAX_NAND_DEVICE || !nand_info[idx].name) {
627                 printf("\n** Device %d not available\n", idx);
628                 show_boot_progress(-55);
629                 return 1;
630         }
631         show_boot_progress(55);
632
633         return nand_load_image(cmdtp, &nand_info[idx], offset, addr, argv[0]);
634 }
635
636 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
637         "nboot   - boot from NAND device\n",
638         "[.jffs2] [partition] | [[[loadAddr] dev] offset]\n");
639
640 #endif
641
642 #else /* CFG_NAND_LEGACY */
643 /*
644  *
645  * Legacy NAND support - to be phased out
646  *
647  */
648 #include <command.h>
649 #include <malloc.h>
650 #include <asm/io.h>
651 #include <watchdog.h>
652
653 #ifdef CONFIG_show_boot_progress
654 # include <status_led.h>
655 # define show_boot_progress(arg)        show_boot_progress(arg)
656 #else
657 # define show_boot_progress(arg)
658 #endif
659
660 #if defined(CONFIG_CMD_NAND)
661 #include <linux/mtd/nand_legacy.h>
662 #if 0
663 #include <linux/mtd/nand_ids.h>
664 #include <jffs2/jffs2.h>
665 #endif
666
667 #ifdef CONFIG_OMAP1510
668 void archflashwp(void *archdata, int wp);
669 #endif
670
671 #define ROUND_DOWN(value,boundary)      ((value) & (~((boundary)-1)))
672
673 #undef  NAND_DEBUG
674 #undef  PSYCHO_DEBUG
675
676 /* ****************** WARNING *********************
677  * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will
678  * erase (or at least attempt to erase) blocks that are marked
679  * bad. This can be very handy if you are _sure_ that the block
680  * is OK, say because you marked a good block bad to test bad
681  * block handling and you are done testing, or if you have
682  * accidentally marked blocks bad.
683  *
684  * Erasing factory marked bad blocks is a _bad_ idea. If the
685  * erase succeeds there is no reliable way to find them again,
686  * and attempting to program or erase bad blocks can affect
687  * the data in _other_ (good) blocks.
688  */
689 #define  ALLOW_ERASE_BAD_DEBUG 0
690
691 #define CONFIG_MTD_NAND_ECC  /* enable ECC */
692 #define CONFIG_MTD_NAND_ECC_JFFS2
693
694 /* bits for nand_legacy_rw() `cmd'; or together as needed */
695 #define NANDRW_READ     0x01
696 #define NANDRW_WRITE    0x00
697 #define NANDRW_JFFS2    0x02
698 #define NANDRW_JFFS2_SKIP       0x04
699
700 /*
701  * Imports from nand_legacy.c
702  */
703 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
704 extern int curr_device;
705 extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs,
706                             size_t len, int clean);
707 extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start,
708                          size_t len, size_t *retlen, u_char *buf);
709 extern void nand_print(struct nand_chip *nand);
710 extern void nand_print_bad(struct nand_chip *nand);
711 extern int nand_read_oob(struct nand_chip *nand, size_t ofs,
712                                size_t len, size_t *retlen, u_char *buf);
713 extern int nand_write_oob(struct nand_chip *nand, size_t ofs,
714                                 size_t len, size_t *retlen, const u_char *buf);
715
716
717 int do_nand (cmd_tbl_t * cmdtp, int flag, int argc, char *argv[])
718 {
719         int rcode = 0;
720
721         switch (argc) {
722         case 0:
723         case 1:
724                 printf ("Usage:\n%s\n", cmdtp->usage);
725                 return 1;
726         case 2:
727                 if (strcmp (argv[1], "info") == 0) {
728                         int i;
729
730                         putc ('\n');
731
732                         for (i = 0; i < CFG_MAX_NAND_DEVICE; ++i) {
733                                 if (nand_dev_desc[i].ChipID ==
734                                     NAND_ChipID_UNKNOWN)
735                                         continue;       /* list only known devices */
736                                 printf ("Device %d: ", i);
737                                 nand_print (&nand_dev_desc[i]);
738                         }
739                         return 0;
740
741                 } else if (strcmp (argv[1], "device") == 0) {
742                         if ((curr_device < 0)
743                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
744                                 puts ("\nno devices available\n");
745                                 return 1;
746                         }
747                         printf ("\nDevice %d: ", curr_device);
748                         nand_print (&nand_dev_desc[curr_device]);
749                         return 0;
750
751                 } else if (strcmp (argv[1], "bad") == 0) {
752                         if ((curr_device < 0)
753                             || (curr_device >= CFG_MAX_NAND_DEVICE)) {
754                                 puts ("\nno devices available\n");
755                                 return 1;
756                         }
757                         printf ("\nDevice %d bad blocks:\n", curr_device);
758                         nand_print_bad (&nand_dev_desc[curr_device]);
759                         return 0;
760
761                 }
762                 printf ("Usage:\n%s\n", cmdtp->usage);
763                 return 1;
764         case 3:
765                 if (strcmp (argv[1], "device") == 0) {
766                         int dev = (int) simple_strtoul (argv[2], NULL, 10);
767
768                         printf ("\nDevice %d: ", dev);
769                         if (dev >= CFG_MAX_NAND_DEVICE) {
770                                 puts ("unknown device\n");
771                                 return 1;
772                         }
773                         nand_print (&nand_dev_desc[dev]);
774                         /*nand_print (dev); */
775
776                         if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) {
777                                 return 1;
778                         }
779
780                         curr_device = dev;
781
782                         puts ("... is now current device\n");
783
784                         return 0;
785                 } else if (strcmp (argv[1], "erase") == 0
786                            && strcmp (argv[2], "clean") == 0) {
787                         struct nand_chip *nand = &nand_dev_desc[curr_device];
788                         ulong off = 0;
789                         ulong size = nand->totlen;
790                         int ret;
791
792                         printf ("\nNAND erase: device %d offset %ld, size %ld ... ", curr_device, off, size);
793
794                         ret = nand_legacy_erase (nand, off, size, 1);
795
796                         printf ("%s\n", ret ? "ERROR" : "OK");
797
798                         return ret;
799                 }
800
801                 printf ("Usage:\n%s\n", cmdtp->usage);
802                 return 1;
803         default:
804                 /* at least 4 args */
805
806                 if (strncmp (argv[1], "read", 4) == 0 ||
807                     strncmp (argv[1], "write", 5) == 0) {
808                         ulong addr = simple_strtoul (argv[2], NULL, 16);
809                         ulong off = simple_strtoul (argv[3], NULL, 16);
810                         ulong size = simple_strtoul (argv[4], NULL, 16);
811                         int cmd = (strncmp (argv[1], "read", 4) == 0) ?
812                                 NANDRW_READ : NANDRW_WRITE;
813                         int ret, total;
814                         char *cmdtail = strchr (argv[1], '.');
815
816                         if (cmdtail && !strncmp (cmdtail, ".oob", 2)) {
817                                 /* read out-of-band data */
818                                 if (cmd & NANDRW_READ) {
819                                         ret = nand_read_oob (nand_dev_desc + curr_device,
820                                                              off, size, (size_t *) & total,
821                                                              (u_char *) addr);
822                                 } else {
823                                         ret = nand_write_oob (nand_dev_desc + curr_device,
824                                                               off, size, (size_t *) & total,
825                                                               (u_char *) addr);
826                                 }
827                                 return ret;
828                         } else if (cmdtail && !strncmp (cmdtail, ".jffs2", 2))
829                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
830                         else if (cmdtail && !strncmp (cmdtail, ".jffs2s", 2)) {
831                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
832                                 if (cmd & NANDRW_READ)
833                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
834                         }
835 #ifdef SXNI855T
836                         /* need ".e" same as ".j" for compatibility with older units */
837                         else if (cmdtail && !strcmp (cmdtail, ".e"))
838                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks */
839 #endif
840 #ifdef CFG_NAND_SKIP_BAD_DOT_I
841                         /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */
842                         /* ".i" for image -> read skips bad block (no 0xff) */
843                         else if (cmdtail && !strcmp (cmdtail, ".i")) {
844                                 cmd |= NANDRW_JFFS2;    /* skip bad blocks (on read too) */
845                                 if (cmd & NANDRW_READ)
846                                         cmd |= NANDRW_JFFS2_SKIP;       /* skip bad blocks (on read too) */
847                         }
848 #endif /* CFG_NAND_SKIP_BAD_DOT_I */
849                         else if (cmdtail) {
850                                 printf ("Usage:\n%s\n", cmdtp->usage);
851                                 return 1;
852                         }
853
854                         printf ("\nNAND %s: device %d offset %ld, size %ld ...\n",
855                                 (cmd & NANDRW_READ) ? "read" : "write",
856                                 curr_device, off, size);
857
858                         ret = nand_legacy_rw (nand_dev_desc + curr_device,
859                                               cmd, off, size,
860                                               (size_t *) & total,
861                                               (u_char *) addr);
862
863                         printf (" %d bytes %s: %s\n", total,
864                                 (cmd & NANDRW_READ) ? "read" : "written",
865                                 ret ? "ERROR" : "OK");
866
867                         return ret;
868                 } else if (strcmp (argv[1], "erase") == 0 &&
869                            (argc == 4 || strcmp ("clean", argv[2]) == 0)) {
870                         int clean = argc == 5;
871                         ulong off =
872                                 simple_strtoul (argv[2 + clean], NULL, 16);
873                         ulong size =
874                                 simple_strtoul (argv[3 + clean], NULL, 16);
875                         int ret;
876
877                         printf ("\nNAND erase: device %d offset %ld, size %ld ...\n",
878                                 curr_device, off, size);
879
880                         ret = nand_legacy_erase (nand_dev_desc + curr_device,
881                                                  off, size, clean);
882
883                         printf ("%s\n", ret ? "ERROR" : "OK");
884
885                         return ret;
886                 } else {
887                         printf ("Usage:\n%s\n", cmdtp->usage);
888                         rcode = 1;
889                 }
890
891                 return rcode;
892         }
893 }
894
895 U_BOOT_CMD(
896         nand,   5,      1,      do_nand,
897         "nand    - legacy NAND sub-system\n",
898         "info  - show available NAND devices\n"
899         "nand device [dev] - show or set current device\n"
900         "nand read[.jffs2[s]]  addr off size\n"
901         "nand write[.jffs2] addr off size - read/write `size' bytes starting\n"
902         "    at offset `off' to/from memory address `addr'\n"
903         "nand erase [clean] [off size] - erase `size' bytes from\n"
904         "    offset `off' (entire device if not specified)\n"
905         "nand bad - show bad blocks\n"
906         "nand read.oob addr off size - read out-of-band data\n"
907         "nand write.oob addr off size - read out-of-band data\n"
908 );
909
910 int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
911 {
912         char *boot_device = NULL;
913         char *ep;
914         int dev;
915         ulong cnt;
916         ulong addr;
917         ulong offset = 0;
918         image_header_t *hdr;
919         int rcode = 0;
920         show_boot_progress (52);
921         switch (argc) {
922         case 1:
923                 addr = CFG_LOAD_ADDR;
924                 boot_device = getenv ("bootdevice");
925                 break;
926         case 2:
927                 addr = simple_strtoul(argv[1], NULL, 16);
928                 boot_device = getenv ("bootdevice");
929                 break;
930         case 3:
931                 addr = simple_strtoul(argv[1], NULL, 16);
932                 boot_device = argv[2];
933                 break;
934         case 4:
935                 addr = simple_strtoul(argv[1], NULL, 16);
936                 boot_device = argv[2];
937                 offset = simple_strtoul(argv[3], NULL, 16);
938                 break;
939         default:
940                 printf ("Usage:\n%s\n", cmdtp->usage);
941                 show_boot_progress (-53);
942                 return 1;
943         }
944
945         show_boot_progress (53);
946         if (!boot_device) {
947                 puts ("\n** No boot device **\n");
948                 show_boot_progress (-54);
949                 return 1;
950         }
951         show_boot_progress (54);
952
953         dev = simple_strtoul(boot_device, &ep, 16);
954
955         if ((dev >= CFG_MAX_NAND_DEVICE) ||
956             (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) {
957                 printf ("\n** Device %d not available\n", dev);
958                 show_boot_progress (-55);
959                 return 1;
960         }
961         show_boot_progress (55);
962
963         printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n",
964                 dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR,
965                 offset);
966
967         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset,
968                         SECTORSIZE, NULL, (u_char *)addr)) {
969                 printf ("** Read error on %d\n", dev);
970                 show_boot_progress (-56);
971                 return 1;
972         }
973         show_boot_progress (56);
974
975         hdr = (image_header_t *)addr;
976
977         if (ntohl(hdr->ih_magic) == IH_MAGIC) {
978
979                 print_image_hdr (hdr);
980
981                 cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t));
982                 cnt -= SECTORSIZE;
983         } else {
984                 printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic));
985                 show_boot_progress (-57);
986                 return 1;
987         }
988         show_boot_progress (57);
989
990         if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ,
991                         offset + SECTORSIZE, cnt, NULL,
992                         (u_char *)(addr+SECTORSIZE))) {
993                 printf ("** Read error on %d\n", dev);
994                 show_boot_progress (-58);
995                 return 1;
996         }
997         show_boot_progress (58);
998
999         /* Loading ok, update default load address */
1000
1001         load_addr = addr;
1002
1003         /* Check if we should attempt an auto-start */
1004         if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) {
1005                 char *local_args[2];
1006                 extern int do_bootm (cmd_tbl_t *, int, int, char *[]);
1007
1008                 local_args[0] = argv[0];
1009                 local_args[1] = NULL;
1010
1011                 printf ("Automatic boot of image at addr 0x%08lx ...\n", addr);
1012
1013                 do_bootm (cmdtp, 0, 1, local_args);
1014                 rcode = 1;
1015         }
1016         return rcode;
1017 }
1018
1019 U_BOOT_CMD(
1020         nboot,  4,      1,      do_nandboot,
1021         "nboot   - boot from NAND device\n",
1022         "loadAddr dev\n"
1023 );
1024
1025 #endif
1026
1027 #endif /* CFG_NAND_LEGACY */