cmd: bootefi: allocate device-tree copy from high memory
[platform/kernel/u-boot.git] / cmd / nand.c
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  * Ported 'dynenv' to 'nand env.oob' command
8  * (C) 2010 Nanometrics, Inc.
9  * 'dynenv' -- Dynamic environment offset in NAND OOB
10  * (C) Copyright 2006-2007 OpenMoko, Inc.
11  * Added 16-bit nand support
12  * (C) 2004 Texas Instruments
13  *
14  * Copyright 2010, 2012 Freescale Semiconductor
15  * The portions of this file whose copyright is held by Freescale and which
16  * are not considered a derived work of GPL v2-only code may be distributed
17  * and/or modified under the terms of the GNU General Public License as
18  * published by the Free Software Foundation; either version 2 of the
19  * License, or (at your option) any later version.
20  *
21  * The function nand_biterror() in this file is inspired from
22  * mtd-utils/nand-utils/nandflipbits.c which was released under GPLv2
23  * only
24  */
25
26 #include <common.h>
27 #include <bootstage.h>
28 #include <image.h>
29 #include <asm/cache.h>
30 #include <linux/mtd/mtd.h>
31 #include <linux/mtd/rawnand.h>
32 #include <command.h>
33 #include <console.h>
34 #include <env.h>
35 #include <watchdog.h>
36 #include <malloc.h>
37 #include <asm/byteorder.h>
38 #include <jffs2/jffs2.h>
39 #include <nand.h>
40
41 #include "legacy-mtd-utils.h"
42
43 #if defined(CONFIG_CMD_MTDPARTS)
44
45 /* partition handling routines */
46 int mtdparts_init(void);
47 int find_dev_and_part(const char *id, struct mtd_device **dev,
48                       u8 *part_num, struct part_info **part);
49 #endif
50
51 #define MAX_NUM_PAGES 64
52
53 static int nand_biterror(struct mtd_info *mtd, ulong off, int bit)
54 {
55         int ret = 0;
56         int page = 0;
57         ulong  block_off;
58         u_char *datbuf[MAX_NUM_PAGES]; /* Data and OOB */
59         u_char data;
60         int pages_per_blk = mtd->erasesize / mtd->writesize;
61         struct erase_info einfo;
62
63         if (pages_per_blk > MAX_NUM_PAGES) {
64                 printf("Too many pages in one erase block\n");
65                 return 1;
66         }
67
68         if (bit < 0 || bit > 7) {
69                 printf("bit position 0 to 7 is allowed\n");
70                 return 1;
71         }
72
73         /* Allocate memory */
74         memset(datbuf, 0, sizeof(datbuf));
75         for (page = 0; page < pages_per_blk ; page++) {
76                 datbuf[page] = malloc(mtd->writesize + mtd->oobsize);
77                 if (!datbuf[page]) {
78                         printf("No memory for page buffer\n");
79                         ret = -ENOMEM;
80                         goto free_memory;
81                 }
82         }
83
84         /* Align to erase block boundary */
85         block_off = off & (~(mtd->erasesize - 1));
86
87         /* Read out memory as first step */
88         for (page = 0; page < pages_per_blk ; page++) {
89                 struct mtd_oob_ops ops;
90                 loff_t addr = (loff_t)block_off;
91
92                 memset(&ops, 0, sizeof(ops));
93                 ops.datbuf = datbuf[page];
94                 ops.oobbuf = datbuf[page] + mtd->writesize;
95                 ops.len = mtd->writesize;
96                 ops.ooblen = mtd->oobsize;
97                 ops.mode = MTD_OPS_RAW;
98                 ret = mtd_read_oob(mtd, addr, &ops);
99                 if (ret < 0) {
100                         printf("Error (%d) reading page %08lx\n",
101                                ret, block_off);
102                         ret = 1;
103                         goto free_memory;
104                 }
105                 block_off += mtd->writesize;
106         }
107
108         /* Erase the block */
109         memset(&einfo, 0, sizeof(einfo));
110         einfo.mtd = mtd;
111         /* Align to erase block boundary */
112         einfo.addr = (loff_t)(off & (~(mtd->erasesize - 1)));
113         einfo.len = mtd->erasesize;
114         ret = mtd_erase(mtd, &einfo);
115         if (ret < 0) {
116                 printf("Error (%d) nand_erase_nand page %08llx\n",
117                        ret, einfo.addr);
118                 ret = 1;
119                 goto free_memory;
120         }
121
122         /* Twist a bit in data part */
123         block_off = off & (mtd->erasesize - 1);
124         data = datbuf[block_off / mtd->writesize][block_off % mtd->writesize];
125         data ^= (1 << bit);
126         datbuf[block_off / mtd->writesize][block_off % mtd->writesize] = data;
127
128         printf("Flip data at 0x%lx with xor 0x%02x (bit=%d) to value=0x%02x\n",
129                off, (1 << bit), bit, data);
130
131         /* Write back twisted data and unmodified OOB */
132         /* Align to erase block boundary */
133         block_off = off & (~(mtd->erasesize - 1));
134         for (page = 0; page < pages_per_blk; page++) {
135                 struct mtd_oob_ops ops;
136                 loff_t addr = (loff_t)block_off;
137
138                 memset(&ops, 0, sizeof(ops));
139                 ops.datbuf = datbuf[page];
140                 ops.oobbuf = datbuf[page] + mtd->writesize;
141                 ops.len = mtd->writesize;
142                 ops.ooblen = mtd->oobsize;
143                 ops.mode = MTD_OPS_RAW;
144                 ret = mtd_write_oob(mtd, addr, &ops);
145                 if (ret < 0) {
146                         printf("Error (%d) write page %08lx\n", ret, block_off);
147                         ret = 1;
148                         goto free_memory;
149                 }
150                 block_off += mtd->writesize;
151         }
152
153 free_memory:
154         for (page = 0; page < pages_per_blk ; page++) {
155                 if (datbuf[page])
156                         free(datbuf[page]);
157         }
158         return ret;
159 }
160
161 static int nand_dump(struct mtd_info *mtd, ulong off, int only_oob,
162                      int repeat)
163 {
164         int i;
165         u_char *datbuf, *oobbuf, *p;
166         static loff_t last;
167         int ret = 0;
168
169         if (repeat)
170                 off = last + mtd->writesize;
171
172         last = off;
173
174         datbuf = memalign(ARCH_DMA_MINALIGN, mtd->writesize);
175         if (!datbuf) {
176                 puts("No memory for page buffer\n");
177                 return 1;
178         }
179
180         oobbuf = memalign(ARCH_DMA_MINALIGN, mtd->oobsize);
181         if (!oobbuf) {
182                 puts("No memory for page buffer\n");
183                 ret = 1;
184                 goto free_dat;
185         }
186         off &= ~(mtd->writesize - 1);
187         loff_t addr = (loff_t) off;
188         struct mtd_oob_ops ops;
189         memset(&ops, 0, sizeof(ops));
190         ops.datbuf = datbuf;
191         ops.oobbuf = oobbuf;
192         ops.len = mtd->writesize;
193         ops.ooblen = mtd->oobsize;
194         ops.mode = MTD_OPS_RAW;
195         i = mtd_read_oob(mtd, addr, &ops);
196         if (i < 0) {
197                 printf("Error (%d) reading page %08lx\n", i, off);
198                 ret = 1;
199                 goto free_all;
200         }
201         printf("Page %08lx dump:\n", off);
202
203         if (!only_oob) {
204                 i = mtd->writesize >> 4;
205                 p = datbuf;
206
207                 while (i--) {
208                         printf("\t%02x %02x %02x %02x %02x %02x %02x %02x"
209                                "  %02x %02x %02x %02x %02x %02x %02x %02x\n",
210                                p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7],
211                                p[8], p[9], p[10], p[11], p[12], p[13], p[14],
212                                p[15]);
213                         p += 16;
214                 }
215         }
216
217         puts("OOB:\n");
218         i = mtd->oobsize >> 3;
219         p = oobbuf;
220         while (i--) {
221                 printf("\t%02x %02x %02x %02x %02x %02x %02x %02x\n",
222                        p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
223                 p += 8;
224         }
225
226 free_all:
227         free(oobbuf);
228 free_dat:
229         free(datbuf);
230
231         return ret;
232 }
233
234 /* ------------------------------------------------------------------------- */
235
236 static int set_dev(int dev)
237 {
238         struct mtd_info *mtd = get_nand_dev_by_index(dev);
239
240         if (!mtd)
241                 return -ENODEV;
242
243         if (nand_curr_device == dev)
244                 return 0;
245
246         printf("Device %d: %s", dev, mtd->name);
247         puts("... is now current device\n");
248         nand_curr_device = dev;
249
250 #ifdef CONFIG_SYS_NAND_SELECT_DEVICE
251         board_nand_select_device(mtd_to_nand(mtd), dev);
252 #endif
253
254         return 0;
255 }
256
257 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
258 static void print_status(ulong start, ulong end, ulong erasesize, int status)
259 {
260         /*
261          * Micron NAND flash (e.g. MT29F4G08ABADAH4) BLOCK LOCK READ STATUS is
262          * not the same as others.  Instead of bit 1 being lock, it is
263          * #lock_tight. To make the driver support either format, ignore bit 1
264          * and use only bit 0 and bit 2.
265          */
266         printf("%08lx - %08lx: %08lx blocks %s%s%s\n",
267                 start,
268                 end - 1,
269                 (end - start) / erasesize,
270                 ((status & NAND_LOCK_STATUS_TIGHT) ?  "TIGHT " : ""),
271                 (!(status & NAND_LOCK_STATUS_UNLOCK) ?  "LOCK " : ""),
272                 ((status & NAND_LOCK_STATUS_UNLOCK) ?  "UNLOCK " : ""));
273 }
274
275 static void do_nand_status(struct mtd_info *mtd)
276 {
277         ulong block_start = 0;
278         ulong off;
279         int last_status = -1;
280
281         struct nand_chip *nand_chip = mtd_to_nand(mtd);
282         /* check the WP bit */
283         nand_chip->cmdfunc(mtd, NAND_CMD_STATUS, -1, -1);
284         printf("device is %swrite protected\n",
285                 (nand_chip->read_byte(mtd) & 0x80 ?
286                  "NOT " : ""));
287
288         for (off = 0; off < mtd->size; off += mtd->erasesize) {
289                 int s = nand_get_lock_status(mtd, off);
290
291                 /* print message only if status has changed */
292                 if (s != last_status && off != 0) {
293                         print_status(block_start, off, mtd->erasesize,
294                                         last_status);
295                         block_start = off;
296                 }
297                 last_status = s;
298         }
299         /* Print the last block info */
300         print_status(block_start, off, mtd->erasesize, last_status);
301 }
302 #endif
303
304 #ifdef CONFIG_ENV_OFFSET_OOB
305 unsigned long nand_env_oob_offset;
306
307 int do_nand_env_oob(struct cmd_tbl *cmdtp, int argc, char *const argv[])
308 {
309         int ret;
310         uint32_t oob_buf[ENV_OFFSET_SIZE/sizeof(uint32_t)];
311         struct mtd_info *mtd = get_nand_dev_by_index(0);
312         char *cmd = argv[1];
313
314         if (CONFIG_SYS_MAX_NAND_DEVICE == 0 || !mtd) {
315                 puts("no devices available\n");
316                 return 1;
317         }
318
319         set_dev(0);
320
321         if (!strcmp(cmd, "get")) {
322                 ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
323                 if (ret)
324                         return 1;
325
326                 printf("0x%08lx\n", nand_env_oob_offset);
327         } else if (!strcmp(cmd, "set")) {
328                 loff_t addr;
329                 loff_t maxsize;
330                 struct mtd_oob_ops ops;
331                 int idx = 0;
332
333                 if (argc < 3)
334                         goto usage;
335
336                 mtd = get_nand_dev_by_index(idx);
337                 /* We don't care about size, or maxsize. */
338                 if (mtd_arg_off(argv[2], &idx, &addr, &maxsize, &maxsize,
339                                 MTD_DEV_TYPE_NAND, mtd->size)) {
340                         puts("Offset or partition name expected\n");
341                         return 1;
342                 }
343                 if (set_dev(idx)) {
344                         puts("Offset or partition name expected\n");
345                         return 1;
346                 }
347
348                 if (idx != 0) {
349                         puts("Partition not on first NAND device\n");
350                         return 1;
351                 }
352
353                 if (mtd->oobavail < ENV_OFFSET_SIZE) {
354                         printf("Insufficient available OOB bytes:\n"
355                                "%d OOB bytes available but %d required for "
356                                "env.oob support\n",
357                                mtd->oobavail, ENV_OFFSET_SIZE);
358                         return 1;
359                 }
360
361                 if ((addr & (mtd->erasesize - 1)) != 0) {
362                         printf("Environment offset must be block-aligned\n");
363                         return 1;
364                 }
365
366                 ops.datbuf = NULL;
367                 ops.mode = MTD_OOB_AUTO;
368                 ops.ooboffs = 0;
369                 ops.ooblen = ENV_OFFSET_SIZE;
370                 ops.oobbuf = (void *) oob_buf;
371
372                 oob_buf[0] = ENV_OOB_MARKER;
373                 oob_buf[1] = addr / mtd->erasesize;
374
375                 ret = mtd->write_oob(mtd, ENV_OFFSET_SIZE, &ops);
376                 if (ret) {
377                         printf("Error writing OOB block 0\n");
378                         return ret;
379                 }
380
381                 ret = get_nand_env_oob(mtd, &nand_env_oob_offset);
382                 if (ret) {
383                         printf("Error reading env offset in OOB\n");
384                         return ret;
385                 }
386
387                 if (addr != nand_env_oob_offset) {
388                         printf("Verification of env offset in OOB failed: "
389                                "0x%08llx expected but got 0x%08lx\n",
390                                (unsigned long long)addr, nand_env_oob_offset);
391                         return 1;
392                 }
393         } else {
394                 goto usage;
395         }
396
397         return ret;
398
399 usage:
400         return CMD_RET_USAGE;
401 }
402
403 #endif
404
405 static void nand_print_and_set_info(int idx)
406 {
407         struct mtd_info *mtd;
408         struct nand_chip *chip;
409
410         mtd = get_nand_dev_by_index(idx);
411         if (!mtd)
412                 return;
413
414         chip = mtd_to_nand(mtd);
415         printf("Device %d: ", idx);
416         if (chip->numchips > 1)
417                 printf("%dx ", chip->numchips);
418         printf("%s, sector size %u KiB\n",
419                mtd->name, mtd->erasesize >> 10);
420         printf("  Page size     %8d b\n", mtd->writesize);
421         printf("  OOB size      %8d b\n", mtd->oobsize);
422         printf("  Erase size    %8d b\n", mtd->erasesize);
423         printf("  ecc strength  %8d bits\n", mtd->ecc_strength);
424         printf("  ecc step size %8d b\n", mtd->ecc_step_size);
425         printf("  subpagesize   %8d b\n", chip->subpagesize);
426         printf("  options       0x%08x\n", chip->options);
427         printf("  bbt options   0x%08x\n", chip->bbt_options);
428
429         /* Set geometry info */
430         env_set_hex("nand_writesize", mtd->writesize);
431         env_set_hex("nand_oobsize", mtd->oobsize);
432         env_set_hex("nand_erasesize", mtd->erasesize);
433 }
434
435 static int raw_access(struct mtd_info *mtd, ulong addr, loff_t off,
436                       ulong count, int read, int no_verify)
437 {
438         int ret = 0;
439
440         while (count--) {
441                 /* Raw access */
442                 mtd_oob_ops_t ops = {
443                         .datbuf = (u8 *)addr,
444                         .oobbuf = ((u8 *)addr) + mtd->writesize,
445                         .len = mtd->writesize,
446                         .ooblen = mtd->oobsize,
447                         .mode = MTD_OPS_RAW
448                 };
449
450                 if (read) {
451                         ret = mtd_read_oob(mtd, off, &ops);
452                 } else {
453                         ret = mtd_write_oob(mtd, off, &ops);
454                         if (!ret && !no_verify)
455                                 ret = nand_verify_page_oob(mtd, &ops, off);
456                 }
457
458                 if (ret) {
459                         printf("%s: error at offset %llx, ret %d\n",
460                                 __func__, (long long)off, ret);
461                         break;
462                 }
463
464                 addr += mtd->writesize + mtd->oobsize;
465                 off += mtd->writesize;
466         }
467
468         return ret;
469 }
470
471 /* Adjust a chip/partition size down for bad blocks so we don't
472  * read/write past the end of a chip/partition by accident.
473  */
474 static void adjust_size_for_badblocks(loff_t *size, loff_t offset, int dev)
475 {
476         /* We grab the nand info object here fresh because this is usually
477          * called after arg_off_size() which can change the value of dev.
478          */
479         struct mtd_info *mtd = get_nand_dev_by_index(dev);
480         loff_t maxoffset = offset + *size;
481         int badblocks = 0;
482
483         /* count badblocks in NAND from offset to offset + size */
484         for (; offset < maxoffset; offset += mtd->erasesize) {
485                 if (nand_block_isbad(mtd, offset))
486                         badblocks++;
487         }
488         /* adjust size if any bad blocks found */
489         if (badblocks) {
490                 *size -= badblocks * mtd->erasesize;
491                 printf("size adjusted to 0x%llx (%d bad blocks)\n",
492                        (unsigned long long)*size, badblocks);
493         }
494 }
495
496 static int do_nand(struct cmd_tbl *cmdtp, int flag, int argc,
497                    char *const argv[])
498 {
499         int i, ret = 0;
500         ulong addr;
501         loff_t off, size, maxsize;
502         char *cmd, *s;
503         struct mtd_info *mtd;
504 #ifdef CONFIG_SYS_NAND_QUIET
505         int quiet = CONFIG_SYS_NAND_QUIET;
506 #else
507         int quiet = 0;
508 #endif
509         const char *quiet_str = env_get("quiet");
510         int dev = nand_curr_device;
511         int repeat = flag & CMD_FLAG_REPEAT;
512
513         /* at least two arguments please */
514         if (argc < 2)
515                 goto usage;
516
517         if (quiet_str)
518                 quiet = simple_strtoul(quiet_str, NULL, 0) != 0;
519
520         cmd = argv[1];
521
522         /* Only "dump" is repeatable. */
523         if (repeat && strcmp(cmd, "dump"))
524                 return 0;
525
526         if (strcmp(cmd, "info") == 0) {
527
528                 putc('\n');
529                 for (i = 0; i < CONFIG_SYS_MAX_NAND_DEVICE; i++)
530                         nand_print_and_set_info(i);
531                 return 0;
532         }
533
534         if (strcmp(cmd, "device") == 0) {
535                 if (argc < 3) {
536                         putc('\n');
537                         if (dev < 0 || dev >= CONFIG_SYS_MAX_NAND_DEVICE)
538                                 puts("no devices available\n");
539                         else
540                                 nand_print_and_set_info(dev);
541                         return 0;
542                 }
543
544                 dev = (int)dectoul(argv[2], NULL);
545                 set_dev(dev);
546
547                 return 0;
548         }
549
550 #ifdef CONFIG_ENV_OFFSET_OOB
551         /* this command operates only on the first nand device */
552         if (strcmp(cmd, "env.oob") == 0)
553                 return do_nand_env_oob(cmdtp, argc - 1, argv + 1);
554 #endif
555
556         /* The following commands operate on the current device, unless
557          * overridden by a partition specifier.  Note that if somehow the
558          * current device is invalid, it will have to be changed to a valid
559          * one before these commands can run, even if a partition specifier
560          * for another device is to be used.
561          */
562         mtd = get_nand_dev_by_index(dev);
563         if (!mtd) {
564                 puts("\nno devices available\n");
565                 return 1;
566         }
567
568         if (strcmp(cmd, "bad") == 0) {
569                 printf("\nDevice %d bad blocks:\n", dev);
570                 for (off = 0; off < mtd->size; off += mtd->erasesize) {
571                         ret = nand_block_isbad(mtd, off);
572                         if (ret)
573                                 printf("  0x%08llx%s\n", (unsigned long long)off,
574                                        ret == 2 ? "\t (bbt reserved)" : "");
575                 }
576                 return 0;
577         }
578
579         /*
580          * Syntax is:
581          *   0    1     2       3    4
582          *   nand erase [clean] [off size]
583          */
584         if (strncmp(cmd, "erase", 5) == 0 || strncmp(cmd, "scrub", 5) == 0) {
585                 nand_erase_options_t opts;
586                 /* "clean" at index 2 means request to write cleanmarker */
587                 int clean = argc > 2 && !strcmp("clean", argv[2]);
588                 int scrub_yes = argc > 2 && !strcmp("-y", argv[2]);
589                 int o = (clean || scrub_yes) ? 3 : 2;
590                 int scrub = !strncmp(cmd, "scrub", 5);
591                 int spread = 0;
592                 int args = 2;
593                 const char *scrub_warn =
594                         "Warning: "
595                         "scrub option will erase all factory set bad blocks!\n"
596                         "         "
597                         "There is no reliable way to recover them.\n"
598                         "         "
599                         "Use this command only for testing purposes if you\n"
600                         "         "
601                         "are sure of what you are doing!\n"
602                         "\nReally scrub this NAND flash? <y/N>\n";
603
604                 if (cmd[5] != 0) {
605                         if (!strcmp(&cmd[5], ".spread")) {
606                                 spread = 1;
607                         } else if (!strcmp(&cmd[5], ".part")) {
608                                 args = 1;
609                         } else if (!strcmp(&cmd[5], ".chip")) {
610                                 args = 0;
611                         } else {
612                                 goto usage;
613                         }
614                 }
615
616                 /*
617                  * Don't allow missing arguments to cause full chip/partition
618                  * erases -- easy to do accidentally, e.g. with a misspelled
619                  * variable name.
620                  */
621                 if (argc != o + args)
622                         goto usage;
623
624                 printf("\nNAND %s: ", cmd);
625                 /* skip first two or three arguments, look for offset and size */
626                 if (mtd_arg_off_size(argc - o, argv + o, &dev, &off, &size,
627                                      &maxsize, MTD_DEV_TYPE_NAND,
628                                      mtd->size) != 0)
629                         return 1;
630
631                 if (set_dev(dev))
632                         return 1;
633
634                 mtd = get_nand_dev_by_index(dev);
635
636                 memset(&opts, 0, sizeof(opts));
637                 opts.offset = off;
638                 opts.length = size;
639                 opts.jffs2  = clean;
640                 opts.quiet  = quiet;
641                 opts.spread = spread;
642
643                 if (scrub) {
644                         if (scrub_yes) {
645                                 opts.scrub = 1;
646                         } else {
647                                 puts(scrub_warn);
648                                 if (confirm_yesno()) {
649                                         opts.scrub = 1;
650                                 } else {
651                                         puts("scrub aborted\n");
652                                         return 1;
653                                 }
654                         }
655                 }
656                 ret = nand_erase_opts(mtd, &opts);
657                 printf("%s\n", ret ? "ERROR" : "OK");
658
659                 return ret == 0 ? 0 : 1;
660         }
661
662         if (strncmp(cmd, "dump", 4) == 0) {
663                 if (argc < 3)
664                         goto usage;
665
666                 off = (int)hextoul(argv[2], NULL);
667                 ret = nand_dump(mtd, off, !strcmp(&cmd[4], ".oob"), repeat);
668
669                 return ret == 0 ? 1 : 0;
670         }
671
672         if (strncmp(cmd, "read", 4) == 0 || strncmp(cmd, "write", 5) == 0) {
673                 size_t rwsize;
674                 ulong pagecount = 1;
675                 int read;
676                 int raw = 0;
677                 int no_verify = 0;
678
679                 if (argc < 4)
680                         goto usage;
681
682                 addr = (ulong)hextoul(argv[2], NULL);
683
684                 read = strncmp(cmd, "read", 4) == 0; /* 1 = read, 0 = write */
685                 printf("\nNAND %s: ", read ? "read" : "write");
686
687                 s = strchr(cmd, '.');
688
689                 if (s && !strncmp(s, ".raw", 4)) {
690                         raw = 1;
691
692                         if (!strcmp(s, ".raw.noverify"))
693                                 no_verify = 1;
694
695                         if (mtd_arg_off(argv[3], &dev, &off, &size, &maxsize,
696                                         MTD_DEV_TYPE_NAND,
697                                         mtd->size))
698                                 return 1;
699
700                         if (set_dev(dev))
701                                 return 1;
702
703                         mtd = get_nand_dev_by_index(dev);
704
705                         if (argc > 4 && !str2long(argv[4], &pagecount)) {
706                                 printf("'%s' is not a number\n", argv[4]);
707                                 return 1;
708                         }
709
710                         if (pagecount * mtd->writesize > size) {
711                                 puts("Size exceeds partition or device limit\n");
712                                 return -1;
713                         }
714
715                         rwsize = pagecount * (mtd->writesize + mtd->oobsize);
716                 } else {
717                         if (mtd_arg_off_size(argc - 3, argv + 3, &dev, &off,
718                                              &size, &maxsize,
719                                              MTD_DEV_TYPE_NAND,
720                                              mtd->size) != 0)
721                                 return 1;
722
723                         if (set_dev(dev))
724                                 return 1;
725
726                         /* size is unspecified */
727                         if (argc < 5)
728                                 adjust_size_for_badblocks(&size, off, dev);
729                         rwsize = size;
730                 }
731
732                 mtd = get_nand_dev_by_index(dev);
733
734                 if (!s || !strcmp(s, ".jffs2") ||
735                     !strcmp(s, ".e") || !strcmp(s, ".i")) {
736                         if (read)
737                                 ret = nand_read_skip_bad(mtd, off, &rwsize,
738                                                          NULL, maxsize,
739                                                          (u_char *)addr);
740                         else
741                                 ret = nand_write_skip_bad(mtd, off, &rwsize,
742                                                           NULL, maxsize,
743                                                           (u_char *)addr,
744                                                           WITH_WR_VERIFY);
745 #ifdef CONFIG_CMD_NAND_TRIMFFS
746                 } else if (!strcmp(s, ".trimffs")) {
747                         if (read) {
748                                 printf("Unknown nand command suffix '%s'\n", s);
749                                 return 1;
750                         }
751                         ret = nand_write_skip_bad(mtd, off, &rwsize, NULL,
752                                                 maxsize, (u_char *)addr,
753                                                 WITH_DROP_FFS | WITH_WR_VERIFY);
754 #endif
755                 } else if (!strcmp(s, ".oob")) {
756                         /* out-of-band data */
757                         mtd_oob_ops_t ops = {
758                                 .oobbuf = (u8 *)addr,
759                                 .ooblen = rwsize,
760                                 .mode = MTD_OPS_RAW
761                         };
762
763                         if (read)
764                                 ret = mtd_read_oob(mtd, off, &ops);
765                         else
766                                 ret = mtd_write_oob(mtd, off, &ops);
767                 } else if (raw) {
768                         ret = raw_access(mtd, addr, off, pagecount, read,
769                                          no_verify);
770                 } else {
771                         printf("Unknown nand command suffix '%s'.\n", s);
772                         return 1;
773                 }
774
775                 printf(" %zu bytes %s: %s\n", rwsize,
776                        read ? "read" : "written", ret ? "ERROR" : "OK");
777
778                 return ret == 0 ? 0 : 1;
779         }
780
781 #ifdef CONFIG_CMD_NAND_TORTURE
782         if (strcmp(cmd, "torture") == 0) {
783                 loff_t endoff;
784                 unsigned int failed = 0, passed = 0;
785
786                 if (argc < 3)
787                         goto usage;
788
789                 if (!str2off(argv[2], &off)) {
790                         puts("Offset is not a valid number\n");
791                         return 1;
792                 }
793
794                 size = mtd->erasesize;
795                 if (argc > 3) {
796                         if (!str2off(argv[3], &size)) {
797                                 puts("Size is not a valid number\n");
798                                 return 1;
799                         }
800                 }
801
802                 endoff = off + size;
803                 if (endoff > mtd->size) {
804                         puts("Arguments beyond end of NAND\n");
805                         return 1;
806                 }
807
808                 off = round_down(off, mtd->erasesize);
809                 endoff = round_up(endoff, mtd->erasesize);
810                 size = endoff - off;
811                 printf("\nNAND torture: device %d offset 0x%llx size 0x%llx (block size 0x%x)\n",
812                        dev, off, size, mtd->erasesize);
813                 while (off < endoff) {
814                         ret = nand_torture(mtd, off);
815                         if (ret) {
816                                 failed++;
817                                 printf("  block at 0x%llx failed\n", off);
818                         } else {
819                                 passed++;
820                         }
821                         off += mtd->erasesize;
822                 }
823                 printf(" Passed: %u, failed: %u\n", passed, failed);
824                 return failed != 0;
825         }
826 #endif
827
828         if (strcmp(cmd, "markbad") == 0) {
829                 argc -= 2;
830                 argv += 2;
831
832                 if (argc <= 0)
833                         goto usage;
834
835                 while (argc > 0) {
836                         addr = hextoul(*argv, NULL);
837
838                         if (mtd_block_markbad(mtd, addr)) {
839                                 printf("block 0x%08lx NOT marked "
840                                         "as bad! ERROR %d\n",
841                                         addr, ret);
842                                 ret = 1;
843                         } else {
844                                 printf("block 0x%08lx successfully "
845                                         "marked as bad\n",
846                                         addr);
847                         }
848                         --argc;
849                         ++argv;
850                 }
851                 return ret;
852         }
853
854         if (strcmp(cmd, "biterr") == 0) {
855                 int bit;
856
857                 if (argc != 4)
858                         goto usage;
859
860                 off = (int)simple_strtoul(argv[2], NULL, 16);
861                 bit = (int)simple_strtoul(argv[3], NULL, 10);
862                 ret = nand_biterror(mtd, off, bit);
863                 return ret;
864         }
865
866 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
867         if (strcmp(cmd, "lock") == 0) {
868                 int tight = 0;
869                 int status = 0;
870                 if (argc == 3) {
871                         if (!strcmp("tight", argv[2]))
872                                 tight = 1;
873                         if (!strcmp("status", argv[2]))
874                                 status = 1;
875                 }
876                 if (status) {
877                         do_nand_status(mtd);
878                 } else {
879                         if (!nand_lock(mtd, tight)) {
880                                 puts("NAND flash successfully locked\n");
881                         } else {
882                                 puts("Error locking NAND flash\n");
883                                 return 1;
884                         }
885                 }
886                 return 0;
887         }
888
889         if (strncmp(cmd, "unlock", 5) == 0) {
890                 int allexcept = 0;
891
892                 s = strchr(cmd, '.');
893
894                 if (s && !strcmp(s, ".allexcept"))
895                         allexcept = 1;
896
897                 if (mtd_arg_off_size(argc - 2, argv + 2, &dev, &off, &size,
898                                      &maxsize, MTD_DEV_TYPE_NAND,
899                                      mtd->size) < 0)
900                         return 1;
901
902                 if (set_dev(dev))
903                         return 1;
904
905                 mtd = get_nand_dev_by_index(dev);
906
907                 if (!nand_unlock(mtd, off, size, allexcept)) {
908                         puts("NAND flash successfully unlocked\n");
909                 } else {
910                         puts("Error unlocking NAND flash, "
911                              "write and erase will probably fail\n");
912                         return 1;
913                 }
914                 return 0;
915         }
916 #endif
917
918 usage:
919         return CMD_RET_USAGE;
920 }
921
922 #ifdef CONFIG_SYS_LONGHELP
923 static char nand_help_text[] =
924         "info - show available NAND devices\n"
925         "nand device [dev] - show or set current device\n"
926         "nand read - addr off|partition size\n"
927         "nand write - addr off|partition size\n"
928         "    read/write 'size' bytes starting at offset 'off'\n"
929         "    to/from memory address 'addr', skipping bad blocks.\n"
930         "nand read.raw - addr off|partition [count]\n"
931         "nand write.raw[.noverify] - addr off|partition [count]\n"
932         "    Use read.raw/write.raw to avoid ECC and access the flash as-is.\n"
933 #ifdef CONFIG_CMD_NAND_TRIMFFS
934         "nand write.trimffs - addr off|partition size\n"
935         "    write 'size' bytes starting at offset 'off' from memory address\n"
936         "    'addr', skipping bad blocks and dropping any pages at the end\n"
937         "    of eraseblocks that contain only 0xFF\n"
938 #endif
939         "nand erase[.spread] [clean] off size - erase 'size' bytes "
940         "from offset 'off'\n"
941         "    With '.spread', erase enough for given file size, otherwise,\n"
942         "    'size' includes skipped bad blocks.\n"
943         "nand erase.part [clean] partition - erase entire mtd partition'\n"
944         "nand erase.chip [clean] - erase entire chip'\n"
945         "nand bad - show bad blocks\n"
946         "nand dump[.oob] off - dump page\n"
947 #ifdef CONFIG_CMD_NAND_TORTURE
948         "nand torture off - torture one block at offset\n"
949         "nand torture off [size] - torture blocks from off to off+size\n"
950 #endif
951         "nand scrub [-y] off size | scrub.part partition | scrub.chip\n"
952         "    really clean NAND erasing bad blocks (UNSAFE)\n"
953         "nand markbad off [...] - mark bad block(s) at offset (UNSAFE)\n"
954         "nand biterr off bit - make a bit error at offset and bit position (UNSAFE)"
955 #ifdef CONFIG_CMD_NAND_LOCK_UNLOCK
956         "\n"
957         "nand lock [tight] [status]\n"
958         "    bring nand to lock state or display locked pages\n"
959         "nand unlock[.allexcept] [offset] [size] - unlock section"
960 #endif
961 #ifdef CONFIG_ENV_OFFSET_OOB
962         "\n"
963         "nand env.oob - environment offset in OOB of block 0 of"
964         "    first device.\n"
965         "nand env.oob set off|partition - set enviromnent offset\n"
966         "nand env.oob get - get environment offset"
967 #endif
968         "";
969 #endif
970
971 U_BOOT_CMD(
972         nand, CONFIG_SYS_MAXARGS, 1, do_nand,
973         "NAND sub-system", nand_help_text
974 );
975
976 static int nand_load_image(struct cmd_tbl *cmdtp, struct mtd_info *mtd,
977                            ulong offset, ulong addr, char *cmd)
978 {
979         int r;
980         char *s;
981         size_t cnt;
982 #if defined(CONFIG_LEGACY_IMAGE_FORMAT)
983         struct legacy_img_hdr *hdr;
984 #endif
985 #if defined(CONFIG_FIT)
986         const void *fit_hdr = NULL;
987 #endif
988
989         s = strchr(cmd, '.');
990         if (s != NULL &&
991             (strcmp(s, ".jffs2") && strcmp(s, ".e") && strcmp(s, ".i"))) {
992                 printf("Unknown nand load suffix '%s'\n", s);
993                 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
994                 return 1;
995         }
996
997         printf("\nLoading from %s, offset 0x%lx\n", mtd->name, offset);
998
999         cnt = mtd->writesize;
1000         r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
1001                                (u_char *)addr);
1002         if (r) {
1003                 puts("** Read error\n");
1004                 bootstage_error(BOOTSTAGE_ID_NAND_HDR_READ);
1005                 return 1;
1006         }
1007         bootstage_mark(BOOTSTAGE_ID_NAND_HDR_READ);
1008
1009         switch (genimg_get_format ((void *)addr)) {
1010 #if defined(CONFIG_LEGACY_IMAGE_FORMAT)
1011         case IMAGE_FORMAT_LEGACY:
1012                 hdr = (struct legacy_img_hdr *)addr;
1013
1014                 bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
1015                 image_print_contents (hdr);
1016
1017                 cnt = image_get_image_size (hdr);
1018                 break;
1019 #endif
1020 #if defined(CONFIG_FIT)
1021         case IMAGE_FORMAT_FIT:
1022                 fit_hdr = (const void *)addr;
1023                 puts ("Fit image detected...\n");
1024
1025                 cnt = fit_get_size (fit_hdr);
1026                 break;
1027 #endif
1028         default:
1029                 bootstage_error(BOOTSTAGE_ID_NAND_TYPE);
1030                 puts ("** Unknown image type\n");
1031                 return 1;
1032         }
1033         bootstage_mark(BOOTSTAGE_ID_NAND_TYPE);
1034
1035         r = nand_read_skip_bad(mtd, offset, &cnt, NULL, mtd->size,
1036                                (u_char *)addr);
1037         if (r) {
1038                 puts("** Read error\n");
1039                 bootstage_error(BOOTSTAGE_ID_NAND_READ);
1040                 return 1;
1041         }
1042         bootstage_mark(BOOTSTAGE_ID_NAND_READ);
1043
1044 #if defined(CONFIG_FIT)
1045         /* This cannot be done earlier, we need complete FIT image in RAM first */
1046         if (genimg_get_format ((void *)addr) == IMAGE_FORMAT_FIT) {
1047                 if (fit_check_format(fit_hdr, IMAGE_SIZE_INVAL)) {
1048                         bootstage_error(BOOTSTAGE_ID_NAND_FIT_READ);
1049                         puts ("** Bad FIT image format\n");
1050                         return 1;
1051                 }
1052                 bootstage_mark(BOOTSTAGE_ID_NAND_FIT_READ_OK);
1053                 fit_print_contents (fit_hdr);
1054         }
1055 #endif
1056
1057         /* Loading ok, update default load address */
1058
1059         image_load_addr = addr;
1060
1061         return bootm_maybe_autostart(cmdtp, cmd);
1062 }
1063
1064 static int do_nandboot(struct cmd_tbl *cmdtp, int flag, int argc,
1065                        char *const argv[])
1066 {
1067         char *boot_device = NULL;
1068         int idx;
1069         ulong addr, offset = 0;
1070         struct mtd_info *mtd;
1071 #if defined(CONFIG_CMD_MTDPARTS)
1072         struct mtd_device *dev;
1073         struct part_info *part;
1074         u8 pnum;
1075
1076         if (argc >= 2) {
1077                 char *p = (argc == 2) ? argv[1] : argv[2];
1078                 if (!(str2long(p, &addr)) && (mtdparts_init() == 0) &&
1079                     (find_dev_and_part(p, &dev, &pnum, &part) == 0)) {
1080                         if (dev->id->type != MTD_DEV_TYPE_NAND) {
1081                                 puts("Not a NAND device\n");
1082                                 return 1;
1083                         }
1084                         if (argc > 3)
1085                                 goto usage;
1086                         if (argc == 3)
1087                                 addr = hextoul(argv[1], NULL);
1088                         else
1089                                 addr = CONFIG_SYS_LOAD_ADDR;
1090
1091                         mtd = get_nand_dev_by_index(dev->id->num);
1092                         return nand_load_image(cmdtp, mtd, part->offset,
1093                                                addr, argv[0]);
1094                 }
1095         }
1096 #endif
1097
1098         bootstage_mark(BOOTSTAGE_ID_NAND_PART);
1099         switch (argc) {
1100         case 1:
1101                 addr = CONFIG_SYS_LOAD_ADDR;
1102                 boot_device = env_get("bootdevice");
1103                 break;
1104         case 2:
1105                 addr = hextoul(argv[1], NULL);
1106                 boot_device = env_get("bootdevice");
1107                 break;
1108         case 3:
1109                 addr = hextoul(argv[1], NULL);
1110                 boot_device = argv[2];
1111                 break;
1112         case 4:
1113                 addr = hextoul(argv[1], NULL);
1114                 boot_device = argv[2];
1115                 offset = hextoul(argv[3], NULL);
1116                 break;
1117         default:
1118 #if defined(CONFIG_CMD_MTDPARTS)
1119 usage:
1120 #endif
1121                 bootstage_error(BOOTSTAGE_ID_NAND_SUFFIX);
1122                 return CMD_RET_USAGE;
1123         }
1124         bootstage_mark(BOOTSTAGE_ID_NAND_SUFFIX);
1125
1126         if (!boot_device) {
1127                 puts("\n** No boot device **\n");
1128                 bootstage_error(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
1129                 return 1;
1130         }
1131         bootstage_mark(BOOTSTAGE_ID_NAND_BOOT_DEVICE);
1132
1133         idx = hextoul(boot_device, NULL);
1134
1135         mtd = get_nand_dev_by_index(idx);
1136         if (!mtd) {
1137                 printf("\n** Device %d not available\n", idx);
1138                 bootstage_error(BOOTSTAGE_ID_NAND_AVAILABLE);
1139                 return 1;
1140         }
1141         bootstage_mark(BOOTSTAGE_ID_NAND_AVAILABLE);
1142
1143         return nand_load_image(cmdtp, mtd, offset, addr, argv[0]);
1144 }
1145
1146 U_BOOT_CMD(nboot, 4, 1, do_nandboot,
1147         "boot from NAND device",
1148         "[partition] | [[[loadAddr] dev] offset]"
1149 );