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Commit | Line | Data |
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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 (CONFIG_COMMANDS & CFG_CMD_NAND) | |
23 | ||
24 | #include <command.h> | |
25 | #include <watchdog.h> | |
26 | #include <malloc.h> | |
27 | #include <asm/byteorder.h> | |
28 | ||
29 | #ifdef CONFIG_SHOW_BOOT_PROGRESS | |
30 | # include <status_led.h> | |
31 | # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) | |
32 | #else | |
33 | # define SHOW_BOOT_PROGRESS(arg) | |
34 | #endif | |
35 | ||
36 | #include <jffs2/jffs2.h> | |
37 | #include <nand.h> | |
38 | ||
39 | extern nand_info_t nand_info[]; /* info for NAND chips */ | |
40 | ||
41 | static int nand_dump_oob(nand_info_t *nand, ulong off) | |
42 | { | |
43 | return 0; | |
44 | } | |
45 | ||
46 | static int nand_dump(nand_info_t *nand, ulong off) | |
47 | { | |
48 | int i; | |
49 | u_char *buf, *p; | |
50 | ||
51 | buf = malloc(nand->oobblock + nand->oobsize); | |
52 | if (!buf) { | |
53 | puts("No memory for page buffer\n"); | |
54 | return 1; | |
55 | } | |
56 | off &= ~(nand->oobblock - 1); | |
57 | i = nand_read_raw(nand, buf, off, nand->oobblock, nand->oobsize); | |
58 | if (i < 0) { | |
59 | printf("Error (%d) reading page %08x\n", i, off); | |
60 | free(buf); | |
61 | return 1; | |
62 | } | |
63 | printf("Page %08x dump:\n", off); | |
64 | i = nand->oobblock >> 4; p = buf; | |
65 | while (i--) { | |
66 | printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x" | |
67 | " %02x %02x %02x %02x %02x %02x %02x %02x\n", | |
68 | p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7], | |
69 | p[8], p[9], p[10], p[11], p[12], p[13], p[14], p[15]); | |
70 | p += 16; | |
71 | } | |
72 | puts("OOB:\n"); | |
73 | i = nand->oobsize >> 3; | |
74 | while (i--) { | |
75 | printf( "\t%02x %02x %02x %02x %02x %02x %02x %02x\n", | |
76 | p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]); | |
77 | p += 8; | |
78 | } | |
79 | free(buf); | |
80 | ||
81 | return 0; | |
82 | } | |
83 | ||
84 | /* ------------------------------------------------------------------------- */ | |
85 | ||
86 | static void | |
87 | arg_off_size(int argc, char *argv[], ulong *off, ulong *size, ulong totsize) | |
88 | { | |
89 | *off = 0; | |
90 | *size = 0; | |
91 | ||
92 | #if defined(CONFIG_JFFS2_NAND) && defined(CFG_JFFS_CUSTOM_PART) | |
93 | if (argc >= 1 && strcmp(argv[0], "partition") == 0) { | |
94 | int part_num; | |
95 | struct part_info *part; | |
96 | const char *partstr; | |
97 | ||
98 | if (argc >= 2) | |
99 | partstr = argv[1]; | |
100 | else | |
101 | partstr = getenv("partition"); | |
102 | ||
103 | if (partstr) | |
104 | part_num = (int)simple_strtoul(partstr, NULL, 10); | |
105 | else | |
106 | part_num = 0; | |
107 | ||
108 | part = jffs2_part_info(part_num); | |
109 | if (part == NULL) { | |
110 | printf("\nInvalid partition %d\n", part_num); | |
111 | return; | |
112 | } | |
113 | *size = part->size; | |
114 | *off = (ulong)part->offset; | |
115 | } else | |
116 | #endif | |
117 | { | |
118 | if (argc >= 1) | |
119 | *off = (ulong)simple_strtoul(argv[0], NULL, 16); | |
120 | else | |
121 | *off = 0; | |
122 | ||
123 | if (argc >= 2) | |
124 | *size = (ulong)simple_strtoul(argv[1], NULL, 16); | |
125 | else | |
126 | *size = totsize - *off; | |
127 | ||
128 | } | |
129 | ||
130 | } | |
131 | ||
132 | int do_nand(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
133 | { | |
134 | int i, dev, ret; | |
135 | ulong addr, off, size; | |
136 | char *cmd, *s; | |
137 | nand_info_t *nand; | |
138 | int quiet = 0; | |
139 | const char *quiet_str = getenv("quiet"); | |
140 | ||
141 | /* at least two arguments please */ | |
142 | if (argc < 2) | |
143 | goto usage; | |
144 | ||
145 | if (quiet_str) | |
146 | quiet = simple_strtoul(quiet_str, NULL, 0) != 0; | |
147 | ||
148 | cmd = argv[1]; | |
149 | ||
150 | if (strcmp(cmd, "info") == 0) { | |
151 | ||
152 | putc('\n'); | |
153 | for (i = 0; i < CFG_MAX_NAND_DEVICE; i++) { | |
154 | if (nand_info[i].name) | |
155 | printf("Device %d: %s, sector size %lu KiB\n", | |
156 | i, nand_info[i].name, | |
157 | nand_info[i].erasesize >> 10); | |
158 | } | |
159 | return 0; | |
160 | } | |
161 | ||
162 | if (strcmp(cmd, "device") == 0) { | |
163 | ||
164 | if (argc < 3) { | |
165 | if ((nand_curr_device < 0) || | |
166 | (nand_curr_device >= CFG_MAX_NAND_DEVICE)) | |
167 | puts("\nno devices available\n"); | |
168 | else | |
169 | printf("\nDevice %d: %s\n", nand_curr_device, | |
170 | nand_info[nand_curr_device].name); | |
171 | return 0; | |
172 | } | |
173 | dev = (int)simple_strtoul(argv[2], NULL, 10); | |
174 | if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) { | |
175 | puts("No such device\n"); | |
176 | return 1; | |
177 | } | |
178 | printf("Device %d: %s", dev, nand_info[dev].name); | |
179 | puts("... is now current device\n"); | |
180 | nand_curr_device = dev; | |
181 | ||
182 | #ifdef CFG_NAND_SELECT_DEVICE | |
183 | /* | |
184 | * Select the chip in the board/cpu specific driver | |
185 | */ | |
186 | board_nand_select_device(nand_info[dev].priv, dev); | |
187 | #endif | |
188 | ||
189 | return 0; | |
190 | } | |
191 | ||
192 | if (strcmp(cmd, "bad") != 0 && strcmp(cmd, "erase") != 0 && | |
193 | strncmp(cmd, "dump", 4) != 0 && | |
194 | strncmp(cmd, "read", 4) != 0 && strncmp(cmd, "write", 5) != 0 && | |
195 | strcmp(cmd, "scrub") != 0 && strcmp(cmd, "markbad") != 0 && | |
196 | strcmp(cmd, "biterr") != 0 && | |
197 | strcmp(cmd, "lock") != 0 && strcmp(cmd, "unlock") != 0 ) | |
198 | goto usage; | |
199 | ||
200 | /* the following commands operate on the current device */ | |
201 | if (nand_curr_device < 0 || nand_curr_device >= CFG_MAX_NAND_DEVICE || | |
202 | !nand_info[nand_curr_device].name) { | |
203 | puts("\nno devices available\n"); | |
204 | return 1; | |
205 | } | |
206 | nand = &nand_info[nand_curr_device]; | |
207 | ||
208 | if (strcmp(cmd, "bad") == 0) { | |
209 | printf("\nDevice %d bad blocks:\n", nand_curr_device); | |
210 | for (off = 0; off < nand->size; off += nand->erasesize) | |
211 | if (nand_block_isbad(nand, off)) | |
212 | printf(" %08x\n", off); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | if (strcmp(cmd, "erase") == 0 || strcmp(cmd, "scrub") == 0) { | |
217 | nand_erase_options_t opts; | |
218 | int clean = argc >= 3 && !strcmp("clean", argv[2]); | |
219 | int rest_argc = argc - 2; | |
220 | char **rest_argv = argv + 2; | |
221 | int scrub = !strcmp(cmd, "scrub"); | |
222 | ||
223 | if (clean) { | |
224 | rest_argc--; | |
225 | rest_argv++; | |
226 | } | |
227 | ||
228 | if (rest_argc == 0) { | |
229 | ||
230 | printf("\nNAND %s: device %d whole chip\n", | |
231 | cmd, | |
232 | nand_curr_device); | |
233 | ||
234 | off = size = 0; | |
235 | } else { | |
236 | arg_off_size(rest_argc, rest_argv, &off, &size, | |
237 | nand->size); | |
238 | ||
239 | if (off == 0 && size == 0) | |
240 | return 1; | |
241 | ||
242 | printf("\nNAND %s: device %d offset 0x%x, size 0x%x\n", | |
243 | cmd, nand_curr_device, off, size); | |
244 | } | |
245 | ||
246 | memset(&opts, 0, sizeof(opts)); | |
247 | opts.offset = off; | |
248 | opts.length = size; | |
249 | opts.jffs2 = clean; | |
250 | opts.quiet = quiet; | |
251 | ||
252 | if (scrub) { | |
253 | printf("Warning: " | |
254 | "scrub option will erase all factory set " | |
255 | "bad blocks!\n" | |
256 | " " | |
257 | "There is no reliable way to recover them.\n" | |
258 | " " | |
259 | "Use this command only for testing purposes " | |
260 | "if you\n" | |
261 | " " | |
262 | "are sure of what you are doing!\n" | |
263 | "\nReally scrub this NAND flash? <y/N>\n" | |
264 | ); | |
265 | ||
266 | if (getc() == 'y' && getc() == '\r') { | |
267 | opts.scrub = 1; | |
268 | } else { | |
269 | printf("scrub aborted\n"); | |
270 | return -1; | |
271 | } | |
272 | } | |
273 | ret = nand_erase_opts(nand, &opts); | |
274 | printf("%s\n", ret ? "ERROR" : "OK"); | |
275 | ||
276 | return ret == 0 ? 0 : 1; | |
277 | } | |
278 | ||
279 | if (strncmp(cmd, "dump", 4) == 0) { | |
280 | if (argc < 3) | |
281 | goto usage; | |
282 | ||
283 | s = strchr(cmd, '.'); | |
284 | off = (int)simple_strtoul(argv[2], NULL, 16); | |
285 | ||
286 | if (s != NULL && strcmp(s, ".oob") == 0) | |
287 | ret = nand_dump_oob(nand, off); | |
288 | else | |
289 | ret = nand_dump(nand, off); | |
290 | ||
291 | return ret == 0 ? 1 : 0; | |
292 | ||
293 | } | |
294 | ||
295 | /* read write */ | |
296 | if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) { | |
297 | int read; | |
298 | ||
299 | if (argc < 4) | |
300 | goto usage; | |
301 | ||
302 | addr = (ulong)simple_strtoul(argv[2], NULL, 16); | |
303 | ||
304 | arg_off_size(argc - 3, argv + 3, &off, &size, nand->size); | |
305 | if (off == 0 && size == 0) | |
306 | return 1; | |
307 | ||
308 | read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */ | |
309 | printf("\nNAND %s: device %d offset %u, size %u ... ", | |
310 | read ? "read" : "write", nand_curr_device, off, size); | |
311 | ||
312 | s = strchr(cmd, '.'); | |
313 | if (s != NULL && | |
314 | (!strcmp(s, ".jffs2") || !strcmp(s, ".e") || !strcmp(s, ".i"))) { | |
315 | if (read) { | |
316 | /* read */ | |
317 | nand_read_options_t opts; | |
318 | memset(&opts, 0, sizeof(opts)); | |
319 | opts.buffer = (u_char*) addr; | |
320 | opts.length = size; | |
321 | opts.offset = off; | |
322 | opts.quiet = quiet; | |
323 | ret = nand_read_opts(nand, &opts); | |
324 | } else { | |
325 | /* write */ | |
326 | nand_write_options_t opts; | |
327 | memset(&opts, 0, sizeof(opts)); | |
328 | opts.buffer = (u_char*) addr; | |
329 | opts.length = size; | |
330 | opts.offset = off; | |
331 | /* opts.forcejffs2 = 1; */ | |
332 | opts.pad = 1; | |
333 | opts.blockalign = 1; | |
334 | opts.quiet = quiet; | |
335 | ret = nand_write_opts(nand, &opts); | |
336 | } | |
337 | printf("%s\n", ret ? "ERROR" : "OK"); | |
338 | return ret == 0 ? 0 : 1; | |
339 | } | |
340 | ||
341 | if (read) | |
342 | ret = nand_read(nand, off, &size, (u_char *)addr); | |
343 | else | |
344 | ret = nand_write(nand, off, &size, (u_char *)addr); | |
345 | ||
346 | printf(" %d bytes %s: %s\n", size, | |
347 | read ? "read" : "written", ret ? "ERROR" : "OK"); | |
348 | ||
349 | return ret == 0 ? 0 : 1; | |
350 | } | |
351 | ||
352 | if (strcmp(cmd, "markbad") == 0) { | |
353 | addr = (ulong)simple_strtoul(argv[2], NULL, 16); | |
354 | ||
355 | int ret = nand->block_markbad(nand, addr); | |
356 | if (ret == 0) { | |
357 | printf("block 0x%08lx successfully marked as bad\n", | |
358 | (ulong) addr); | |
359 | return 0; | |
360 | } else { | |
361 | printf("block 0x%08lx NOT marked as bad! ERROR %d\n", | |
362 | (ulong) addr, ret); | |
363 | } | |
364 | return 1; | |
365 | } | |
366 | if (strcmp(cmd, "biterr") == 0) { | |
367 | /* todo */ | |
368 | return 1; | |
369 | } | |
370 | ||
371 | if (strcmp(cmd, "lock") == 0) { | |
372 | int tight = 0; | |
373 | int status = 0; | |
374 | if (argc == 3) { | |
375 | if (!strcmp("tight", argv[2])) | |
376 | tight = 1; | |
377 | if (!strcmp("status", argv[2])) | |
378 | status = 1; | |
379 | } | |
380 | ||
381 | if (status) { | |
382 | ulong block_start = 0; | |
383 | ulong off; | |
384 | int last_status = -1; | |
385 | ||
386 | struct nand_chip *nand_chip = nand->priv; | |
387 | /* check the WP bit */ | |
388 | nand_chip->cmdfunc (nand, NAND_CMD_STATUS, -1, -1); | |
389 | printf("device is %swrite protected\n", | |
390 | (nand_chip->read_byte(nand) & 0x80 ? | |
391 | "NOT " : "" ) ); | |
392 | ||
393 | for (off = 0; off < nand->size; off += nand->oobblock) { | |
394 | int s = nand_get_lock_status(nand, off); | |
395 | ||
396 | /* print message only if status has changed | |
397 | * or at end of chip | |
398 | */ | |
399 | if (off == nand->size - nand->oobblock | |
400 | || (s != last_status && off != 0)) { | |
401 | ||
402 | printf("%08x - %08x: %8d pages %s%s%s\n", | |
403 | block_start, | |
404 | off-1, | |
405 | (off-block_start)/nand->oobblock, | |
406 | ((last_status & NAND_LOCK_STATUS_TIGHT) ? "TIGHT " : ""), | |
407 | ((last_status & NAND_LOCK_STATUS_LOCK) ? "LOCK " : ""), | |
408 | ((last_status & NAND_LOCK_STATUS_UNLOCK) ? "UNLOCK " : "")); | |
409 | } | |
410 | ||
411 | last_status = s; | |
412 | } | |
413 | } else { | |
414 | if (!nand_lock(nand, tight)) { | |
415 | printf ("NAND flash successfully locked\n"); | |
416 | } else { | |
417 | printf ("Error locking NAND flash. \n"); | |
418 | return 1; | |
419 | } | |
420 | } | |
421 | return 0; | |
422 | } | |
423 | ||
424 | if (strcmp(cmd, "unlock") == 0) { | |
425 | if (argc == 2) { | |
426 | off = 0; | |
427 | size = nand->size; | |
428 | } else { | |
429 | arg_off_size(argc - 2, argv + 2, &off, &size, | |
430 | nand->size); | |
431 | } | |
432 | ||
433 | if (!nand_unlock(nand, off, size)) { | |
434 | printf("NAND flash successfully unlocked\n"); | |
435 | } else { | |
436 | printf("Error unlocking NAND flash. " | |
437 | "Write and erase will probably fail\n"); | |
438 | return 1; | |
439 | } | |
440 | return 0; | |
441 | } | |
442 | ||
443 | usage: | |
444 | printf("Usage:\n%s\n", cmdtp->usage); | |
445 | return 1; | |
446 | } | |
447 | ||
448 | U_BOOT_CMD(nand, 5, 1, do_nand, | |
449 | "nand - NAND sub-system\n", | |
450 | "info - show available NAND devices\n" | |
451 | "nand device [dev] - show or set current device\n" | |
452 | "nand read[.jffs2] - addr off size\n" | |
453 | "nand write[.jffs2] - addr off size - read/write `size' bytes starting\n" | |
454 | " at offset `off' to/from memory address `addr'\n" | |
455 | "nand erase [clean] [off size] - erase `size' bytes from\n" | |
456 | " offset `off' (entire device if not specified)\n" | |
457 | "nand bad - show bad blocks\n" | |
458 | "nand dump[.oob] off - dump page\n" | |
459 | "nand scrub - really clean NAND erasing bad blocks (UNSAFE)\n" | |
460 | "nand markbad off - mark bad block at offset (UNSAFE)\n" | |
461 | "nand biterr off - make a bit error at offset (UNSAFE)\n" | |
462 | "nand lock [tight] [status] - bring nand to lock state or display locked pages\n" | |
463 | "nand unlock [offset] [size] - unlock section\n"); | |
464 | ||
465 | int do_nandboot(cmd_tbl_t * cmdtp, int flag, int argc, char *argv[]) | |
466 | { | |
467 | char *boot_device = NULL; | |
468 | char *ep; | |
469 | int dev; | |
470 | int r; | |
471 | ulong addr, cnt, offset = 0; | |
472 | image_header_t *hdr; | |
473 | nand_info_t *nand; | |
474 | ||
475 | switch (argc) { | |
476 | case 1: | |
477 | addr = CFG_LOAD_ADDR; | |
478 | boot_device = getenv("bootdevice"); | |
479 | break; | |
480 | case 2: | |
481 | addr = simple_strtoul(argv[1], NULL, 16); | |
482 | boot_device = getenv("bootdevice"); | |
483 | break; | |
484 | case 3: | |
485 | addr = simple_strtoul(argv[1], NULL, 16); | |
486 | boot_device = argv[2]; | |
487 | break; | |
488 | case 4: | |
489 | addr = simple_strtoul(argv[1], NULL, 16); | |
490 | boot_device = argv[2]; | |
491 | offset = simple_strtoul(argv[3], NULL, 16); | |
492 | break; | |
493 | default: | |
494 | printf("Usage:\n%s\n", cmdtp->usage); | |
495 | SHOW_BOOT_PROGRESS(-1); | |
496 | return 1; | |
497 | } | |
498 | ||
499 | if (!boot_device) { | |
500 | puts("\n** No boot device **\n"); | |
501 | SHOW_BOOT_PROGRESS(-1); | |
502 | return 1; | |
503 | } | |
504 | ||
505 | dev = simple_strtoul(boot_device, &ep, 16); | |
506 | ||
507 | if (dev < 0 || dev >= CFG_MAX_NAND_DEVICE || !nand_info[dev].name) { | |
508 | printf("\n** Device %d not available\n", dev); | |
509 | SHOW_BOOT_PROGRESS(-1); | |
510 | return 1; | |
511 | } | |
512 | ||
513 | nand = &nand_info[dev]; | |
514 | printf("\nLoading from device %d: %s (offset 0x%lx)\n", | |
515 | dev, nand->name, offset); | |
516 | ||
517 | cnt = nand->oobblock; | |
518 | r = nand_read(nand, offset, &cnt, (u_char *) addr); | |
519 | if (r) { | |
520 | printf("** Read error on %d\n", dev); | |
521 | SHOW_BOOT_PROGRESS(-1); | |
522 | return 1; | |
523 | } | |
524 | ||
525 | hdr = (image_header_t *) addr; | |
526 | ||
527 | if (ntohl(hdr->ih_magic) != IH_MAGIC) { | |
528 | printf("\n** Bad Magic Number 0x%x **\n", hdr->ih_magic); | |
529 | SHOW_BOOT_PROGRESS(-1); | |
530 | return 1; | |
531 | } | |
532 | ||
533 | print_image_hdr(hdr); | |
534 | ||
535 | cnt = (ntohl(hdr->ih_size) + sizeof (image_header_t)); | |
536 | ||
537 | r = nand_read(nand, offset, &cnt, (u_char *) addr); | |
538 | if (r) { | |
539 | printf("** Read error on %d\n", dev); | |
540 | SHOW_BOOT_PROGRESS(-1); | |
541 | return 1; | |
542 | } | |
543 | ||
544 | /* Loading ok, update default load address */ | |
545 | ||
546 | load_addr = addr; | |
547 | ||
548 | /* Check if we should attempt an auto-start */ | |
549 | if (((ep = getenv("autostart")) != NULL) && (strcmp(ep, "yes") == 0)) { | |
550 | char *local_args[2]; | |
551 | extern int do_bootm(cmd_tbl_t *, int, int, char *[]); | |
552 | ||
553 | local_args[0] = argv[0]; | |
554 | local_args[1] = NULL; | |
555 | ||
556 | printf("Automatic boot of image at addr 0x%08lx ...\n", addr); | |
557 | ||
558 | do_bootm(cmdtp, 0, 1, local_args); | |
559 | return 1; | |
560 | } | |
561 | return 0; | |
562 | } | |
563 | ||
564 | U_BOOT_CMD(nboot, 4, 1, do_nandboot, | |
565 | "nboot - boot from NAND device\n", "loadAddr dev\n"); | |
566 | ||
567 | ||
568 | #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */ | |
569 | ||
570 | #else /* CFG_NAND_LEGACY */ | |
571 | /* | |
572 | * | |
573 | * Legacy NAND support - to be phased out | |
574 | * | |
575 | */ | |
576 | #include <command.h> | |
577 | #include <malloc.h> | |
578 | #include <asm/io.h> | |
579 | #include <watchdog.h> | |
580 | ||
581 | #ifdef CONFIG_SHOW_BOOT_PROGRESS | |
582 | # include <status_led.h> | |
583 | # define SHOW_BOOT_PROGRESS(arg) show_boot_progress(arg) | |
584 | #else | |
585 | # define SHOW_BOOT_PROGRESS(arg) | |
586 | #endif | |
587 | ||
588 | #if (CONFIG_COMMANDS & CFG_CMD_NAND) | |
589 | #include <linux/mtd/nand_legacy.h> | |
590 | #if 0 | |
591 | #include <linux/mtd/nand_ids.h> | |
592 | #include <jffs2/jffs2.h> | |
593 | #endif | |
594 | ||
595 | #ifdef CONFIG_OMAP1510 | |
596 | void archflashwp(void *archdata, int wp); | |
597 | #endif | |
598 | ||
599 | #define ROUND_DOWN(value,boundary) ((value) & (~((boundary)-1))) | |
600 | ||
601 | #undef NAND_DEBUG | |
602 | #undef PSYCHO_DEBUG | |
603 | ||
604 | /* ****************** WARNING ********************* | |
605 | * When ALLOW_ERASE_BAD_DEBUG is non-zero the erase command will | |
606 | * erase (or at least attempt to erase) blocks that are marked | |
607 | * bad. This can be very handy if you are _sure_ that the block | |
608 | * is OK, say because you marked a good block bad to test bad | |
609 | * block handling and you are done testing, or if you have | |
610 | * accidentally marked blocks bad. | |
611 | * | |
612 | * Erasing factory marked bad blocks is a _bad_ idea. If the | |
613 | * erase succeeds there is no reliable way to find them again, | |
614 | * and attempting to program or erase bad blocks can affect | |
615 | * the data in _other_ (good) blocks. | |
616 | */ | |
617 | #define ALLOW_ERASE_BAD_DEBUG 0 | |
618 | ||
619 | #define CONFIG_MTD_NAND_ECC /* enable ECC */ | |
620 | #define CONFIG_MTD_NAND_ECC_JFFS2 | |
621 | ||
622 | /* bits for nand_legacy_rw() `cmd'; or together as needed */ | |
623 | #define NANDRW_READ 0x01 | |
624 | #define NANDRW_WRITE 0x00 | |
625 | #define NANDRW_JFFS2 0x02 | |
626 | #define NANDRW_JFFS2_SKIP 0x04 | |
627 | ||
628 | /* | |
629 | * Imports from nand_legacy.c | |
630 | */ | |
631 | extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE]; | |
632 | extern int curr_device; | |
633 | extern int nand_legacy_erase(struct nand_chip *nand, size_t ofs, | |
634 | size_t len, int clean); | |
635 | extern int nand_legacy_rw(struct nand_chip *nand, int cmd, size_t start, | |
636 | size_t len, size_t *retlen, u_char *buf); | |
637 | extern void nand_print(struct nand_chip *nand); | |
638 | extern void nand_print_bad(struct nand_chip *nand); | |
639 | extern int nand_read_oob(struct nand_chip *nand, size_t ofs, | |
640 | size_t len, size_t *retlen, u_char *buf); | |
641 | extern int nand_write_oob(struct nand_chip *nand, size_t ofs, | |
642 | size_t len, size_t *retlen, const u_char *buf); | |
643 | ||
644 | ||
645 | int do_nand (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
646 | { | |
647 | int rcode = 0; | |
648 | ||
649 | switch (argc) { | |
650 | case 0: | |
651 | case 1: | |
652 | printf ("Usage:\n%s\n", cmdtp->usage); | |
653 | return 1; | |
654 | case 2: | |
655 | if (strcmp(argv[1],"info") == 0) { | |
656 | int i; | |
657 | ||
658 | putc ('\n'); | |
659 | ||
660 | for (i=0; i<CFG_MAX_NAND_DEVICE; ++i) { | |
661 | if(nand_dev_desc[i].ChipID == NAND_ChipID_UNKNOWN) | |
662 | continue; /* list only known devices */ | |
663 | printf ("Device %d: ", i); | |
664 | nand_print(&nand_dev_desc[i]); | |
665 | } | |
666 | return 0; | |
667 | ||
668 | } else if (strcmp(argv[1],"device") == 0) { | |
669 | if ((curr_device < 0) || (curr_device >= CFG_MAX_NAND_DEVICE)) { | |
670 | puts ("\nno devices available\n"); | |
671 | return 1; | |
672 | } | |
673 | printf ("\nDevice %d: ", curr_device); | |
674 | nand_print(&nand_dev_desc[curr_device]); | |
675 | return 0; | |
676 | ||
677 | } else if (strcmp(argv[1],"bad") == 0) { | |
678 | if ((curr_device < 0) || (curr_device >= CFG_MAX_NAND_DEVICE)) { | |
679 | puts ("\nno devices available\n"); | |
680 | return 1; | |
681 | } | |
682 | printf ("\nDevice %d bad blocks:\n", curr_device); | |
683 | nand_print_bad(&nand_dev_desc[curr_device]); | |
684 | return 0; | |
685 | ||
686 | } | |
687 | printf ("Usage:\n%s\n", cmdtp->usage); | |
688 | return 1; | |
689 | case 3: | |
690 | if (strcmp(argv[1],"device") == 0) { | |
691 | int dev = (int)simple_strtoul(argv[2], NULL, 10); | |
692 | ||
693 | printf ("\nDevice %d: ", dev); | |
694 | if (dev >= CFG_MAX_NAND_DEVICE) { | |
695 | puts ("unknown device\n"); | |
696 | return 1; | |
697 | } | |
698 | nand_print(&nand_dev_desc[dev]); | |
699 | /*nand_print (dev);*/ | |
700 | ||
701 | if (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN) { | |
702 | return 1; | |
703 | } | |
704 | ||
705 | curr_device = dev; | |
706 | ||
707 | puts ("... is now current device\n"); | |
708 | ||
709 | return 0; | |
710 | } | |
711 | else if (strcmp(argv[1],"erase") == 0 && strcmp(argv[2], "clean") == 0) { | |
712 | struct nand_chip* nand = &nand_dev_desc[curr_device]; | |
713 | ulong off = 0; | |
714 | ulong size = nand->totlen; | |
715 | int ret; | |
716 | ||
717 | printf ("\nNAND erase: device %d offset %ld, size %ld ... ", | |
718 | curr_device, off, size); | |
719 | ||
720 | ret = nand_legacy_erase (nand, off, size, 1); | |
721 | ||
722 | printf("%s\n", ret ? "ERROR" : "OK"); | |
723 | ||
724 | return ret; | |
725 | } | |
726 | ||
727 | printf ("Usage:\n%s\n", cmdtp->usage); | |
728 | return 1; | |
729 | default: | |
730 | /* at least 4 args */ | |
731 | ||
732 | if (strncmp(argv[1], "read", 4) == 0 || | |
733 | strncmp(argv[1], "write", 5) == 0) { | |
734 | ulong addr = simple_strtoul(argv[2], NULL, 16); | |
735 | ulong off = simple_strtoul(argv[3], NULL, 16); | |
736 | ulong size = simple_strtoul(argv[4], NULL, 16); | |
737 | int cmd = (strncmp(argv[1], "read", 4) == 0) ? | |
738 | NANDRW_READ : NANDRW_WRITE; | |
739 | int ret, total; | |
740 | char* cmdtail = strchr(argv[1], '.'); | |
741 | ||
742 | if (cmdtail && !strncmp(cmdtail, ".oob", 2)) { | |
743 | /* read out-of-band data */ | |
744 | if (cmd & NANDRW_READ) { | |
745 | ret = nand_read_oob(nand_dev_desc + curr_device, | |
746 | off, size, (size_t *)&total, | |
747 | (u_char*)addr); | |
748 | } | |
749 | else { | |
750 | ret = nand_write_oob(nand_dev_desc + curr_device, | |
751 | off, size, (size_t *)&total, | |
752 | (u_char*)addr); | |
753 | } | |
754 | return ret; | |
755 | } | |
756 | else if (cmdtail && !strncmp(cmdtail, ".jffs2", 2)) | |
757 | cmd |= NANDRW_JFFS2; /* skip bad blocks */ | |
758 | else if (cmdtail && !strncmp(cmdtail, ".jffs2s", 2)) { | |
759 | cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */ | |
760 | if (cmd & NANDRW_READ) | |
761 | cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */ | |
762 | } | |
763 | #ifdef SXNI855T | |
764 | /* need ".e" same as ".j" for compatibility with older units */ | |
765 | else if (cmdtail && !strcmp(cmdtail, ".e")) | |
766 | cmd |= NANDRW_JFFS2; /* skip bad blocks */ | |
767 | #endif | |
768 | #ifdef CFG_NAND_SKIP_BAD_DOT_I | |
769 | /* need ".i" same as ".jffs2s" for compatibility with older units (esd) */ | |
770 | /* ".i" for image -> read skips bad block (no 0xff) */ | |
771 | else if (cmdtail && !strcmp(cmdtail, ".i")) { | |
772 | cmd |= NANDRW_JFFS2; /* skip bad blocks (on read too) */ | |
773 | if (cmd & NANDRW_READ) | |
774 | cmd |= NANDRW_JFFS2_SKIP; /* skip bad blocks (on read too) */ | |
775 | } | |
776 | #endif /* CFG_NAND_SKIP_BAD_DOT_I */ | |
777 | else if (cmdtail) { | |
778 | printf ("Usage:\n%s\n", cmdtp->usage); | |
779 | return 1; | |
780 | } | |
781 | ||
782 | printf ("\nNAND %s: device %d offset %ld, size %ld ...\n", | |
783 | (cmd & NANDRW_READ) ? "read" : "write", | |
784 | curr_device, off, size); | |
785 | ||
786 | ret = nand_legacy_rw(nand_dev_desc + curr_device, cmd, off, size, | |
787 | (size_t *)&total, (u_char*)addr); | |
788 | ||
789 | printf (" %d bytes %s: %s\n", total, | |
790 | (cmd & NANDRW_READ) ? "read" : "written", | |
791 | ret ? "ERROR" : "OK"); | |
792 | ||
793 | return ret; | |
794 | } else if (strcmp(argv[1],"erase") == 0 && | |
795 | (argc == 4 || strcmp("clean", argv[2]) == 0)) { | |
796 | int clean = argc == 5; | |
797 | ulong off = simple_strtoul(argv[2 + clean], NULL, 16); | |
798 | ulong size = simple_strtoul(argv[3 + clean], NULL, 16); | |
799 | int ret; | |
800 | ||
801 | printf ("\nNAND erase: device %d offset %ld, size %ld ...\n", | |
802 | curr_device, off, size); | |
803 | ||
804 | ret = nand_legacy_erase (nand_dev_desc + curr_device, | |
805 | off, size, clean); | |
806 | ||
807 | printf("%s\n", ret ? "ERROR" : "OK"); | |
808 | ||
809 | return ret; | |
810 | } else { | |
811 | printf ("Usage:\n%s\n", cmdtp->usage); | |
812 | rcode = 1; | |
813 | } | |
814 | ||
815 | return rcode; | |
816 | } | |
817 | } | |
818 | ||
819 | U_BOOT_CMD( | |
820 | nand, 5, 1, do_nand, | |
821 | "nand - legacy NAND sub-system\n", | |
822 | "info - show available NAND devices\n" | |
823 | "nand device [dev] - show or set current device\n" | |
824 | "nand read[.jffs2[s]] addr off size\n" | |
825 | "nand write[.jffs2] addr off size - read/write `size' bytes starting\n" | |
826 | " at offset `off' to/from memory address `addr'\n" | |
827 | "nand erase [clean] [off size] - erase `size' bytes from\n" | |
828 | " offset `off' (entire device if not specified)\n" | |
829 | "nand bad - show bad blocks\n" | |
830 | "nand read.oob addr off size - read out-of-band data\n" | |
831 | "nand write.oob addr off size - read out-of-band data\n" | |
832 | ); | |
833 | ||
834 | int do_nandboot (cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
835 | { | |
836 | char *boot_device = NULL; | |
837 | char *ep; | |
838 | int dev; | |
839 | ulong cnt; | |
840 | ulong addr; | |
841 | ulong offset = 0; | |
842 | image_header_t *hdr; | |
843 | int rcode = 0; | |
844 | switch (argc) { | |
845 | case 1: | |
846 | addr = CFG_LOAD_ADDR; | |
847 | boot_device = getenv ("bootdevice"); | |
848 | break; | |
849 | case 2: | |
850 | addr = simple_strtoul(argv[1], NULL, 16); | |
851 | boot_device = getenv ("bootdevice"); | |
852 | break; | |
853 | case 3: | |
854 | addr = simple_strtoul(argv[1], NULL, 16); | |
855 | boot_device = argv[2]; | |
856 | break; | |
857 | case 4: | |
858 | addr = simple_strtoul(argv[1], NULL, 16); | |
859 | boot_device = argv[2]; | |
860 | offset = simple_strtoul(argv[3], NULL, 16); | |
861 | break; | |
862 | default: | |
863 | printf ("Usage:\n%s\n", cmdtp->usage); | |
864 | SHOW_BOOT_PROGRESS (-1); | |
865 | return 1; | |
866 | } | |
867 | ||
868 | if (!boot_device) { | |
869 | puts ("\n** No boot device **\n"); | |
870 | SHOW_BOOT_PROGRESS (-1); | |
871 | return 1; | |
872 | } | |
873 | ||
874 | dev = simple_strtoul(boot_device, &ep, 16); | |
875 | ||
876 | if ((dev >= CFG_MAX_NAND_DEVICE) || | |
877 | (nand_dev_desc[dev].ChipID == NAND_ChipID_UNKNOWN)) { | |
878 | printf ("\n** Device %d not available\n", dev); | |
879 | SHOW_BOOT_PROGRESS (-1); | |
880 | return 1; | |
881 | } | |
882 | ||
883 | printf ("\nLoading from device %d: %s at 0x%lx (offset 0x%lx)\n", | |
884 | dev, nand_dev_desc[dev].name, nand_dev_desc[dev].IO_ADDR, | |
885 | offset); | |
886 | ||
887 | if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, offset, | |
888 | SECTORSIZE, NULL, (u_char *)addr)) { | |
889 | printf ("** Read error on %d\n", dev); | |
890 | SHOW_BOOT_PROGRESS (-1); | |
891 | return 1; | |
892 | } | |
893 | ||
894 | hdr = (image_header_t *)addr; | |
895 | ||
896 | if (ntohl(hdr->ih_magic) == IH_MAGIC) { | |
897 | ||
898 | print_image_hdr (hdr); | |
899 | ||
900 | cnt = (ntohl(hdr->ih_size) + sizeof(image_header_t)); | |
901 | cnt -= SECTORSIZE; | |
902 | } else { | |
903 | printf ("\n** Bad Magic Number 0x%x **\n", ntohl(hdr->ih_magic)); | |
904 | SHOW_BOOT_PROGRESS (-1); | |
905 | return 1; | |
906 | } | |
907 | ||
908 | if (nand_legacy_rw (nand_dev_desc + dev, NANDRW_READ, | |
909 | offset + SECTORSIZE, cnt, NULL, | |
910 | (u_char *)(addr+SECTORSIZE))) { | |
911 | printf ("** Read error on %d\n", dev); | |
912 | SHOW_BOOT_PROGRESS (-1); | |
913 | return 1; | |
914 | } | |
915 | ||
916 | /* Loading ok, update default load address */ | |
917 | ||
918 | load_addr = addr; | |
919 | ||
920 | /* Check if we should attempt an auto-start */ | |
921 | if (((ep = getenv("autostart")) != NULL) && (strcmp(ep,"yes") == 0)) { | |
922 | char *local_args[2]; | |
923 | extern int do_bootm (cmd_tbl_t *, int, int, char *[]); | |
924 | ||
925 | local_args[0] = argv[0]; | |
926 | local_args[1] = NULL; | |
927 | ||
928 | printf ("Automatic boot of image at addr 0x%08lx ...\n", addr); | |
929 | ||
930 | do_bootm (cmdtp, 0, 1, local_args); | |
931 | rcode = 1; | |
932 | } | |
933 | return rcode; | |
934 | } | |
935 | ||
936 | U_BOOT_CMD( | |
937 | nboot, 4, 1, do_nandboot, | |
938 | "nboot - boot from NAND device\n", | |
939 | "loadAddr dev\n" | |
940 | ); | |
941 | ||
942 | #endif /* (CONFIG_COMMANDS & CFG_CMD_NAND) */ | |
943 | ||
944 | #endif /* CFG_NAND_LEGACY */ |