summaryrefslogtreecommitdiff
path: root/common/cmd_ubi.c
blob: f11cb61f1581e9857fb730222e92b8b9958320ee (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
/*
 * Unsorted Block Image commands
 *
 *  Copyright (C) 2008 Samsung Electronics
 *  Kyungmin Park <kyungmin.park@samsung.com>
 *
 * Copyright 2008-2009 Stefan Roese <sr@denx.de>, DENX Software Engineering
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <common.h>
#include <command.h>
#include <exports.h>

#include <nand.h>
#include <onenand_uboot.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <ubi_uboot.h>
#include <asm/errno.h>
#include <jffs2/load_kernel.h>

#undef ubi_msg
#define ubi_msg(fmt, ...) printf("UBI: " fmt "\n", ##__VA_ARGS__)

#define DEV_TYPE_NONE		0
#define DEV_TYPE_NAND		1
#define DEV_TYPE_ONENAND	2
#define DEV_TYPE_NOR		3

/* Private own data */
static struct ubi_device *ubi;
static char buffer[80];
static int ubi_initialized;

struct selected_dev {
	char part_name[80];
	int selected;
	int nr;
	struct mtd_info *mtd_info;
};

static struct selected_dev ubi_dev;

#ifdef CONFIG_CMD_UBIFS
int ubifs_is_mounted(void);
void cmd_ubifs_umount(void);
#endif

static void ubi_dump_vol_info(const struct ubi_volume *vol)
{
	ubi_msg("volume information dump:");
	ubi_msg("vol_id          %d", vol->vol_id);
	ubi_msg("reserved_pebs   %d", vol->reserved_pebs);
	ubi_msg("alignment       %d", vol->alignment);
	ubi_msg("data_pad        %d", vol->data_pad);
	ubi_msg("vol_type        %d", vol->vol_type);
	ubi_msg("name_len        %d", vol->name_len);
	ubi_msg("usable_leb_size %d", vol->usable_leb_size);
	ubi_msg("used_ebs        %d", vol->used_ebs);
	ubi_msg("used_bytes      %lld", vol->used_bytes);
	ubi_msg("last_eb_bytes   %d", vol->last_eb_bytes);
	ubi_msg("corrupted       %d", vol->corrupted);
	ubi_msg("upd_marker      %d", vol->upd_marker);

	if (vol->name_len <= UBI_VOL_NAME_MAX &&
		strnlen(vol->name, vol->name_len + 1) == vol->name_len) {
		ubi_msg("name            %s", vol->name);
	} else {
		ubi_msg("the 1st 5 characters of the name: %c%c%c%c%c",
				vol->name[0], vol->name[1], vol->name[2],
				vol->name[3], vol->name[4]);
	}
	printf("\n");
}

static void display_volume_info(struct ubi_device *ubi)
{
	int i;

	for (i = 0; i < (ubi->vtbl_slots + 1); i++) {
		if (!ubi->volumes[i])
			continue;	/* Empty record */
		ubi_dump_vol_info(ubi->volumes[i]);
	}
}

static void display_ubi_info(struct ubi_device *ubi)
{
	ubi_msg("MTD device name:            \"%s\"", ubi->mtd->name);
	ubi_msg("MTD device size:            %llu MiB", ubi->flash_size >> 20);
	ubi_msg("physical eraseblock size:   %d bytes (%d KiB)",
			ubi->peb_size, ubi->peb_size >> 10);
	ubi_msg("logical eraseblock size:    %d bytes", ubi->leb_size);
	ubi_msg("number of good PEBs:        %d", ubi->good_peb_count);
	ubi_msg("number of bad PEBs:         %d", ubi->bad_peb_count);
	ubi_msg("smallest flash I/O unit:    %d", ubi->min_io_size);
	ubi_msg("VID header offset:          %d (aligned %d)",
			ubi->vid_hdr_offset, ubi->vid_hdr_aloffset);
	ubi_msg("data offset:                %d", ubi->leb_start);
	ubi_msg("max. allowed volumes:       %d", ubi->vtbl_slots);
	ubi_msg("wear-leveling threshold:    %d", CONFIG_MTD_UBI_WL_THRESHOLD);
	ubi_msg("number of internal volumes: %d", UBI_INT_VOL_COUNT);
	ubi_msg("number of user volumes:     %d",
			ubi->vol_count - UBI_INT_VOL_COUNT);
	ubi_msg("available PEBs:             %d", ubi->avail_pebs);
	ubi_msg("total number of reserved PEBs: %d", ubi->rsvd_pebs);
	ubi_msg("number of PEBs reserved for bad PEB handling: %d",
			ubi->beb_rsvd_pebs);
	ubi_msg("max/mean erase counter: %d/%d", ubi->max_ec, ubi->mean_ec);
}

static int ubi_info(int layout)
{
	if (layout)
		display_volume_info(ubi);
	else
		display_ubi_info(ubi);

	return 0;
}

static int verify_mkvol_req(const struct ubi_device *ubi,
			    const struct ubi_mkvol_req *req)
{
	int n, err = EINVAL;

	if (req->bytes < 0 || req->alignment < 0 || req->vol_type < 0 ||
	    req->name_len < 0)
		goto bad;

	if ((req->vol_id < 0 || req->vol_id >= ubi->vtbl_slots) &&
	    req->vol_id != UBI_VOL_NUM_AUTO)
		goto bad;

	if (req->alignment == 0)
		goto bad;

	if (req->bytes == 0) {
		printf("No space left in UBI device!\n");
		err = ENOMEM;
		goto bad;
	}

	if (req->vol_type != UBI_DYNAMIC_VOLUME &&
	    req->vol_type != UBI_STATIC_VOLUME)
		goto bad;

	if (req->alignment > ubi->leb_size)
		goto bad;

	n = req->alignment % ubi->min_io_size;
	if (req->alignment != 1 && n)
		goto bad;

	if (req->name_len > UBI_VOL_NAME_MAX) {
		printf("Name too long!\n");
		err = ENAMETOOLONG;
		goto bad;
	}

	return 0;
bad:
	return err;
}

static int ubi_create_vol(char *volume, int64_t size, int dynamic)
{
	struct ubi_mkvol_req req;
	int err;

	if (dynamic)
		req.vol_type = UBI_DYNAMIC_VOLUME;
	else
		req.vol_type = UBI_STATIC_VOLUME;

	req.vol_id = UBI_VOL_NUM_AUTO;
	req.alignment = 1;
	req.bytes = size;

	strcpy(req.name, volume);
	req.name_len = strlen(volume);
	req.name[req.name_len] = '\0';
	req.padding1 = 0;
	/* It's duplicated at drivers/mtd/ubi/cdev.c */
	err = verify_mkvol_req(ubi, &req);
	if (err) {
		printf("verify_mkvol_req failed %d\n", err);
		return err;
	}
	printf("Creating %s volume %s of size %lld\n",
		dynamic ? "dynamic" : "static", volume, size);
	/* Call real ubi create volume */
	return ubi_create_volume(ubi, &req);
}

static struct ubi_volume *ubi_find_volume(char *volume)
{
	struct ubi_volume *vol = NULL;
	int i;

	for (i = 0; i < ubi->vtbl_slots; i++) {
		vol = ubi->volumes[i];
		if (vol && !strcmp(vol->name, volume))
			return vol;
	}

	printf("Volume %s not found!\n", volume);
	return NULL;
}

static int ubi_remove_vol(char *volume)
{
	int err, reserved_pebs, i;
	struct ubi_volume *vol;

	vol = ubi_find_volume(volume);
	if (vol == NULL)
		return ENODEV;

	printf("Remove UBI volume %s (id %d)\n", vol->name, vol->vol_id);

	if (ubi->ro_mode) {
		printf("It's read-only mode\n");
		err = EROFS;
		goto out_err;
	}

	err = ubi_change_vtbl_record(ubi, vol->vol_id, NULL);
	if (err) {
		printf("Error changing Vol tabel record err=%x\n", err);
		goto out_err;
	}
	reserved_pebs = vol->reserved_pebs;
	for (i = 0; i < vol->reserved_pebs; i++) {
		err = ubi_eba_unmap_leb(ubi, vol, i);
		if (err)
			goto out_err;
	}

	kfree(vol->eba_tbl);
	ubi->volumes[vol->vol_id]->eba_tbl = NULL;
	ubi->volumes[vol->vol_id] = NULL;

	ubi->rsvd_pebs -= reserved_pebs;
	ubi->avail_pebs += reserved_pebs;
	i = ubi->beb_rsvd_level - ubi->beb_rsvd_pebs;
	if (i > 0) {
		i = ubi->avail_pebs >= i ? i : ubi->avail_pebs;
		ubi->avail_pebs -= i;
		ubi->rsvd_pebs += i;
		ubi->beb_rsvd_pebs += i;
		if (i > 0)
			ubi_msg("reserve more %d PEBs", i);
	}
	ubi->vol_count -= 1;

	return 0;
out_err:
	ubi_err("cannot remove volume %s, error %d", volume, err);
	if (err < 0)
		err = -err;
	return err;
}

int ubi_volume_write(char *volume, void *buf, size_t size)
{
	int err = 1;
	int rsvd_bytes = 0;
	struct ubi_volume *vol;

	vol = ubi_find_volume(volume);
	if (vol == NULL)
		return ENODEV;

	rsvd_bytes = vol->reserved_pebs * (ubi->leb_size - vol->data_pad);
	if (size < 0 || size > rsvd_bytes) {
		printf("size > volume size! Aborting!\n");
		return EINVAL;
	}

	err = ubi_start_update(ubi, vol, size);
	if (err < 0) {
		printf("Cannot start volume update\n");
		return -err;
	}

	err = ubi_more_update_data(ubi, vol, buf, size);
	if (err < 0) {
		printf("Couldnt or partially wrote data\n");
		return -err;
	}

	if (err) {
		size = err;

		err = ubi_check_volume(ubi, vol->vol_id);
		if (err < 0)
			return -err;

		if (err) {
			ubi_warn("volume %d on UBI device %d is corrupted",
					vol->vol_id, ubi->ubi_num);
			vol->corrupted = 1;
		}

		vol->checked = 1;
		ubi_gluebi_updated(vol);
	}

	return 0;
}

int ubi_volume_read(char *volume, char *buf, size_t size)
{
	int err, lnum, off, len, tbuf_size;
	void *tbuf;
	unsigned long long tmp;
	struct ubi_volume *vol;
	loff_t offp = 0;

	vol = ubi_find_volume(volume);
	if (vol == NULL)
		return ENODEV;

	if (vol->updating) {
		printf("updating");
		return EBUSY;
	}
	if (vol->upd_marker) {
		printf("damaged volume, update marker is set");
		return EBADF;
	}
	if (offp == vol->used_bytes)
		return 0;

	if (size == 0) {
		printf("No size specified -> Using max size (%lld)\n", vol->used_bytes);
		size = vol->used_bytes;
	}

	if (vol->corrupted)
		printf("read from corrupted volume %d", vol->vol_id);
	if (offp + size > vol->used_bytes)
		size = vol->used_bytes - offp;

	tbuf_size = vol->usable_leb_size;
	if (size < tbuf_size)
		tbuf_size = ALIGN(size, ubi->min_io_size);
	tbuf = malloc(tbuf_size);
	if (!tbuf) {
		printf("NO MEM\n");
		return ENOMEM;
	}
	len = size > tbuf_size ? tbuf_size : size;

	tmp = offp;
	off = do_div(tmp, vol->usable_leb_size);
	lnum = tmp;
	do {
		if (off + len >= vol->usable_leb_size)
			len = vol->usable_leb_size - off;

		err = ubi_eba_read_leb(ubi, vol, lnum, tbuf, off, len, 0);
		if (err) {
			printf("read err %x\n", err);
			err = -err;
			break;
		}
		off += len;
		if (off == vol->usable_leb_size) {
			lnum += 1;
			off -= vol->usable_leb_size;
		}

		size -= len;
		offp += len;

		memcpy(buf, tbuf, len);

		buf += len;
		len = size > tbuf_size ? tbuf_size : size;
	} while (size);

	free(tbuf);
	return err;
}

static int ubi_dev_scan(struct mtd_info *info, char *ubidev,
		const char *vid_header_offset)
{
	struct mtd_device *dev;
	struct part_info *part;
	struct mtd_partition mtd_part;
	char ubi_mtd_param_buffer[80];
	u8 pnum;
	int err;

	if (find_dev_and_part(ubidev, &dev, &pnum, &part) != 0)
		return 1;

	sprintf(buffer, "mtd=%d", pnum);
	memset(&mtd_part, 0, sizeof(mtd_part));
	mtd_part.name = buffer;
	mtd_part.size = part->size;
	mtd_part.offset = part->offset;
	add_mtd_partitions(info, &mtd_part, 1);

	strcpy(ubi_mtd_param_buffer, buffer);
	if (vid_header_offset)
		sprintf(ubi_mtd_param_buffer, "mtd=%d,%s", pnum,
				vid_header_offset);
	err = ubi_mtd_param_parse(ubi_mtd_param_buffer, NULL);
	if (err) {
		del_mtd_partitions(info);
		return -err;
	}

	err = ubi_init();
	if (err) {
		del_mtd_partitions(info);
		return -err;
	}

	ubi_initialized = 1;

	return 0;
}

int ubi_part(char *part_name, const char *vid_header_offset)
{
	int err = 0;
	char mtd_dev[16];
	struct mtd_device *dev;
	struct part_info *part;
	u8 pnum;

	if (mtdparts_init() != 0) {
		printf("Error initializing mtdparts!\n");
		return 1;
	}

#ifdef CONFIG_CMD_UBIFS
	/*
	 * Automatically unmount UBIFS partition when user
	 * changes the UBI device. Otherwise the following
	 * UBIFS commands will crash.
	 */
	if (ubifs_is_mounted())
		cmd_ubifs_umount();
#endif

	/* todo: get dev number for NAND... */
	ubi_dev.nr = 0;

	/*
	 * Call ubi_exit() before re-initializing the UBI subsystem
	 */
	if (ubi_initialized) {
		ubi_exit();
		del_mtd_partitions(ubi_dev.mtd_info);
	}

	/*
	 * Search the mtd device number where this partition
	 * is located
	 */
	if (find_dev_and_part(part_name, &dev, &pnum, &part)) {
		printf("Partition %s not found!\n", part_name);
		return 1;
	}
	sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(dev->id->type), dev->id->num);
	ubi_dev.mtd_info = get_mtd_device_nm(mtd_dev);
	if (IS_ERR(ubi_dev.mtd_info)) {
		printf("Partition %s not found on device %s!\n", part_name,
		       mtd_dev);
		return 1;
	}

	ubi_dev.selected = 1;

	strcpy(ubi_dev.part_name, part_name);
	err = ubi_dev_scan(ubi_dev.mtd_info, ubi_dev.part_name,
			vid_header_offset);
	if (err) {
		printf("UBI init error %d\n", err);
		ubi_dev.selected = 0;
		return err;
	}

	ubi = ubi_devices[0];

	return 0;
}

static int do_ubi(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
	int64_t size = 0;
	ulong addr = 0;

	if (argc < 2)
		return CMD_RET_USAGE;

	if (strcmp(argv[1], "part") == 0) {
		const char *vid_header_offset = NULL;

		/* Print current partition */
		if (argc == 2) {
			if (!ubi_dev.selected) {
				printf("Error, no UBI device/partition selected!\n");
				return 1;
			}

			printf("Device %d: %s, partition %s\n",
			       ubi_dev.nr, ubi_dev.mtd_info->name, ubi_dev.part_name);
			return 0;
		}

		if (argc < 3)
			return CMD_RET_USAGE;

		if (argc > 3)
			vid_header_offset = argv[3];

		return ubi_part(argv[2], vid_header_offset);
	}

	if ((strcmp(argv[1], "part") != 0) && (!ubi_dev.selected)) {
		printf("Error, no UBI device/partition selected!\n");
		return 1;
	}

	if (strcmp(argv[1], "info") == 0) {
		int layout = 0;
		if (argc > 2 && !strncmp(argv[2], "l", 1))
			layout = 1;
		return ubi_info(layout);
	}

	if (strncmp(argv[1], "create", 6) == 0) {
		int dynamic = 1;	/* default: dynamic volume */

		/* Use maximum available size */
		size = 0;

		/* E.g., create volume size type */
		if (argc == 5) {
			if (strncmp(argv[4], "s", 1) == 0)
				dynamic = 0;
			else if (strncmp(argv[4], "d", 1) != 0) {
				printf("Incorrect type\n");
				return 1;
			}
			argc--;
		}
		/* E.g., create volume size */
		if (argc == 4) {
			size = simple_strtoull(argv[3], NULL, 16);
			argc--;
		}
		/* Use maximum available size */
		if (!size) {
			size = (int64_t)ubi->avail_pebs * ubi->leb_size;
			printf("No size specified -> Using max size (%lld)\n", size);
		}
		/* E.g., create volume */
		if (argc == 3)
			return ubi_create_vol(argv[2], size, dynamic);
	}

	if (strncmp(argv[1], "remove", 6) == 0) {
		/* E.g., remove volume */
		if (argc == 3)
			return ubi_remove_vol(argv[2]);
	}

	if (strncmp(argv[1], "write", 5) == 0) {
		int ret;

		if (argc < 5) {
			printf("Please see usage\n");
			return 1;
		}

		addr = simple_strtoul(argv[2], NULL, 16);
		size = simple_strtoul(argv[4], NULL, 16);

		ret = ubi_volume_write(argv[3], (void *)addr, size);
		if (!ret) {
			printf("%lld bytes written to volume %s\n", size,
			       argv[3]);
		}

		return ret;
	}

	if (strncmp(argv[1], "read", 4) == 0) {
		size = 0;

		/* E.g., read volume size */
		if (argc == 5) {
			size = simple_strtoul(argv[4], NULL, 16);
			argc--;
		}

		/* E.g., read volume */
		if (argc == 4) {
			addr = simple_strtoul(argv[2], NULL, 16);
			argc--;
		}

		if (argc == 3) {
			printf("Read %lld bytes from volume %s to %lx\n", size,
			       argv[3], addr);

			return ubi_volume_read(argv[3], (char *)addr, size);
		}
	}

	printf("Please see usage\n");
	return 1;
}

U_BOOT_CMD(
	ubi, 6, 1, do_ubi,
	"ubi commands",
	"part [part] [offset]\n"
		" - Show or set current partition (with optional VID"
		" header offset)\n"
	"ubi info [l[ayout]]"
		" - Display volume and ubi layout information\n"
	"ubi create[vol] volume [size] [type]"
		" - create volume name with size\n"
	"ubi write[vol] address volume size"
		" - Write volume from address with size\n"
	"ubi read[vol] address volume [size]"
		" - Read volume to address with size\n"
	"ubi remove[vol] volume"
		" - Remove volume\n"
	"[Legends]\n"
	" volume: character name\n"
	" size: specified in bytes\n"
	" type: s[tatic] or d[ynamic] (default=dynamic)"
);