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Stefan Roese68d7d652009-03-19 13:30:36 +01001/*
2 * (C) Copyright 2002
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * (C) Copyright 2002
6 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
7 *
8 * (C) Copyright 2003
9 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
10 *
11 * (C) Copyright 2005
12 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
13 *
14 * Added support for reading flash partition table from environment.
15 * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
16 * kernel tree.
17 *
Ben Gardinerca75b202010-08-31 17:48:03 -040018 * (C) Copyright 2008
19 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
20 *
Stefan Roese68d7d652009-03-19 13:30:36 +010021 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
22 * Copyright 2002 SYSGO Real-Time Solutions GmbH
23 *
24 * See file CREDITS for list of people who contributed to this
25 * project.
26 *
27 * This program is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU General Public License as
29 * published by the Free Software Foundation; either version 2 of
30 * the License, or (at your option) any later version.
31 *
32 * This program is distributed in the hope that it will be useful,
33 * but WITHOUT ANY WARRANTY; without even the implied warranty of
34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
35 * GNU General Public License for more details.
36 *
37 * You should have received a copy of the GNU General Public License
38 * along with this program; if not, write to the Free Software
39 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
40 * MA 02111-1307 USA
41 */
42
43/*
44 * Three environment variables are used by the parsing routines:
45 *
46 * 'partition' - keeps current partition identifier
47 *
48 * partition := <part-id>
49 * <part-id> := <dev-id>,part_num
50 *
51 *
52 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
53 *
54 * mtdids=<idmap>[,<idmap>,...]
55 *
56 * <idmap> := <dev-id>=<mtd-id>
57 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
58 * <dev-num> := mtd device number, 0...
59 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
60 *
61 *
62 * 'mtdparts' - partition list
63 *
64 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
65 *
66 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
67 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
68 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
69 * <size> := standard linux memsize OR '-' to denote all remaining space
70 * <offset> := partition start offset within the device
71 * <name> := '(' NAME ')'
72 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
73 *
74 * Notes:
75 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
76 * - if the above variables are not set defaults for a given target are used
77 *
78 * Examples:
79 *
80 * 1 NOR Flash, with 1 single writable partition:
81 * mtdids=nor0=edb7312-nor
82 * mtdparts=mtdparts=edb7312-nor:-
83 *
84 * 1 NOR Flash with 2 partitions, 1 NAND with one
85 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
86 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
87 *
88 */
89
Stefan Roese68d7d652009-03-19 13:30:36 +010090#include <common.h>
91#include <command.h>
92#include <malloc.h>
Ladislav Michlb93b24b2009-03-23 12:06:07 +010093#include <jffs2/load_kernel.h>
Stefan Roese68d7d652009-03-19 13:30:36 +010094#include <linux/list.h>
95#include <linux/ctype.h>
Stefan Roese864aa032009-05-12 14:31:56 +020096#include <linux/err.h>
97#include <linux/mtd/mtd.h>
Stefan Roese68d7d652009-03-19 13:30:36 +010098
99#if defined(CONFIG_CMD_NAND)
Stefan Roese68d7d652009-03-19 13:30:36 +0100100#include <linux/mtd/nand.h>
101#include <nand.h>
Stefan Roese68d7d652009-03-19 13:30:36 +0100102#endif
103
104#if defined(CONFIG_CMD_ONENAND)
Stefan Roese68d7d652009-03-19 13:30:36 +0100105#include <linux/mtd/onenand.h>
106#include <onenand_uboot.h>
107#endif
108
Stefan Roese68d7d652009-03-19 13:30:36 +0100109/* special size referring to all the remaining space in a partition */
110#define SIZE_REMAINING 0xFFFFFFFF
111
112/* special offset value, it is used when not provided by user
113 *
114 * this value is used temporarily during parsing, later such offests
115 * are recalculated */
116#define OFFSET_NOT_SPECIFIED 0xFFFFFFFF
117
118/* minimum partition size */
119#define MIN_PART_SIZE 4096
120
121/* this flag needs to be set in part_info struct mask_flags
122 * field for read-only partitions */
123#define MTD_WRITEABLE_CMD 1
124
125/* default values for mtdids and mtdparts variables */
126#if defined(MTDIDS_DEFAULT)
127static const char *const mtdids_default = MTDIDS_DEFAULT;
128#else
Stefan Roese68d7d652009-03-19 13:30:36 +0100129static const char *const mtdids_default = NULL;
130#endif
131
132#if defined(MTDPARTS_DEFAULT)
133static const char *const mtdparts_default = MTDPARTS_DEFAULT;
134#else
Stefan Roese68d7d652009-03-19 13:30:36 +0100135static const char *const mtdparts_default = NULL;
136#endif
137
138/* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
139#define MTDIDS_MAXLEN 128
140#define MTDPARTS_MAXLEN 512
141#define PARTITION_MAXLEN 16
142static char last_ids[MTDIDS_MAXLEN];
143static char last_parts[MTDPARTS_MAXLEN];
144static char last_partition[PARTITION_MAXLEN];
145
146/* low level jffs2 cache cleaning routine */
147extern void jffs2_free_cache(struct part_info *part);
148
149/* mtdids mapping list, filled by parse_ids() */
150struct list_head mtdids;
151
152/* device/partition list, parse_cmdline() parses into here */
153struct list_head devices;
154
155/* current active device and partition number */
Stefan Roese76b58832009-05-16 12:04:22 +0200156struct mtd_device *current_mtd_dev = NULL;
157u8 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100158
159static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
160
161/* command line only routines */
162static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
163static int device_del(struct mtd_device *dev);
164
165/**
166 * Parses a string into a number. The number stored at ptr is
167 * potentially suffixed with K (for kilobytes, or 1024 bytes),
168 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
169 * 1073741824). If the number is suffixed with K, M, or G, then
170 * the return value is the number multiplied by one kilobyte, one
171 * megabyte, or one gigabyte, respectively.
172 *
173 * @param ptr where parse begins
174 * @param retptr output pointer to next char after parse completes (output)
175 * @return resulting unsigned int
176 */
177static unsigned long memsize_parse (const char *const ptr, const char **retptr)
178{
179 unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0);
180
181 switch (**retptr) {
182 case 'G':
183 case 'g':
184 ret <<= 10;
185 case 'M':
186 case 'm':
187 ret <<= 10;
188 case 'K':
189 case 'k':
190 ret <<= 10;
191 (*retptr)++;
192 default:
193 break;
194 }
195
196 return ret;
197}
198
199/**
200 * Format string describing supplied size. This routine does the opposite job
201 * to memsize_parse(). Size in bytes is converted to string and if possible
202 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
203 *
204 * Note, that this routine does not check for buffer overflow, it's the caller
205 * who must assure enough space.
206 *
207 * @param buf output buffer
208 * @param size size to be converted to string
209 */
210static void memsize_format(char *buf, u32 size)
211{
212#define SIZE_GB ((u32)1024*1024*1024)
213#define SIZE_MB ((u32)1024*1024)
214#define SIZE_KB ((u32)1024)
215
216 if ((size % SIZE_GB) == 0)
217 sprintf(buf, "%ug", size/SIZE_GB);
218 else if ((size % SIZE_MB) == 0)
219 sprintf(buf, "%um", size/SIZE_MB);
220 else if (size % SIZE_KB == 0)
221 sprintf(buf, "%uk", size/SIZE_KB);
222 else
223 sprintf(buf, "%u", size);
224}
225
226/**
227 * This routine does global indexing of all partitions. Resulting index for
228 * current partition is saved in 'mtddevnum'. Current partition name in
229 * 'mtddevname'.
230 */
231static void index_partitions(void)
232{
233 char buf[16];
234 u16 mtddevnum;
235 struct part_info *part;
236 struct list_head *dentry;
237 struct mtd_device *dev;
238
Wolfgang Denke1d29502010-04-28 10:58:10 +0200239 debug("--- index partitions ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100240
Stefan Roese76b58832009-05-16 12:04:22 +0200241 if (current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100242 mtddevnum = 0;
243 list_for_each(dentry, &devices) {
244 dev = list_entry(dentry, struct mtd_device, link);
Stefan Roese76b58832009-05-16 12:04:22 +0200245 if (dev == current_mtd_dev) {
246 mtddevnum += current_mtd_partnum;
Stefan Roese68d7d652009-03-19 13:30:36 +0100247 sprintf(buf, "%d", mtddevnum);
248 setenv("mtddevnum", buf);
249 break;
250 }
251 mtddevnum += dev->num_parts;
252 }
253
Stefan Roese76b58832009-05-16 12:04:22 +0200254 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100255 setenv("mtddevname", part->name);
256
Wolfgang Denke1d29502010-04-28 10:58:10 +0200257 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100258 } else {
259 setenv("mtddevnum", NULL);
260 setenv("mtddevname", NULL);
261
Wolfgang Denke1d29502010-04-28 10:58:10 +0200262 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100263 }
264}
265
266/**
267 * Save current device and partition in environment variable 'partition'.
268 */
269static void current_save(void)
270{
271 char buf[16];
272
Wolfgang Denke1d29502010-04-28 10:58:10 +0200273 debug("--- current_save ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100274
Stefan Roese76b58832009-05-16 12:04:22 +0200275 if (current_mtd_dev) {
276 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
277 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100278
279 setenv("partition", buf);
280 strncpy(last_partition, buf, 16);
281
Wolfgang Denke1d29502010-04-28 10:58:10 +0200282 debug("=> partition %s\n", buf);
Stefan Roese68d7d652009-03-19 13:30:36 +0100283 } else {
284 setenv("partition", NULL);
285 last_partition[0] = '\0';
286
Wolfgang Denke1d29502010-04-28 10:58:10 +0200287 debug("=> partition NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100288 }
289 index_partitions();
290}
291
Ben Gardiner0a026d32010-08-31 17:48:00 -0400292
293/**
294 * Produce a mtd_info given a type and num.
295 *
296 * @param type mtd type
297 * @param num mtd number
298 * @param mtd a pointer to an mtd_info instance (output)
299 * @return 0 if device is valid, 1 otherwise
300 */
301static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
302{
303 char mtd_dev[16];
304
305 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
306 *mtd = get_mtd_device_nm(mtd_dev);
307 if (IS_ERR(*mtd)) {
308 printf("Device %s not found!\n", mtd_dev);
309 return 1;
310 }
311
312 return 0;
313}
314
Stefan Roese68d7d652009-03-19 13:30:36 +0100315/**
Stefan Roese864aa032009-05-12 14:31:56 +0200316 * Performs sanity check for supplied flash partition.
317 * Table of existing MTD flash devices is searched and partition device
Stefan Roese68d7d652009-03-19 13:30:36 +0100318 * is located. Alignment with the granularity of nand erasesize is verified.
319 *
320 * @param id of the parent device
321 * @param part partition to validate
322 * @return 0 if partition is valid, 1 otherwise
323 */
Stefan Roese864aa032009-05-12 14:31:56 +0200324static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
Stefan Roese68d7d652009-03-19 13:30:36 +0100325{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400326 struct mtd_info *mtd = NULL;
Stefan Roese864aa032009-05-12 14:31:56 +0200327 int i, j;
328 ulong start;
Stefan Roese68d7d652009-03-19 13:30:36 +0100329
Ben Gardiner0a026d32010-08-31 17:48:00 -0400330 if (get_mtd_info(id->type, id->num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200331 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100332
333 part->sector_size = mtd->erasesize;
334
Stefan Roese864aa032009-05-12 14:31:56 +0200335 if (!mtd->numeraseregions) {
336 /*
337 * Only one eraseregion (NAND, OneNAND or uniform NOR),
338 * checking for alignment is easy here
339 */
340 if ((unsigned long)part->offset % mtd->erasesize) {
341 printf("%s%d: partition (%s) start offset"
342 "alignment incorrect\n",
343 MTD_DEV_TYPE(id->type), id->num, part->name);
344 return 1;
345 }
Stefan Roese68d7d652009-03-19 13:30:36 +0100346
Stefan Roese864aa032009-05-12 14:31:56 +0200347 if (part->size % mtd->erasesize) {
348 printf("%s%d: partition (%s) size alignment incorrect\n",
349 MTD_DEV_TYPE(id->type), id->num, part->name);
350 return 1;
351 }
352 } else {
353 /*
354 * Multiple eraseregions (non-uniform NOR),
355 * checking for alignment is more complex here
356 */
357
358 /* Check start alignment */
359 for (i = 0; i < mtd->numeraseregions; i++) {
360 start = mtd->eraseregions[i].offset;
361 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
362 if (part->offset == start)
363 goto start_ok;
364 start += mtd->eraseregions[i].erasesize;
365 }
366 }
367
368 printf("%s%d: partition (%s) start offset alignment incorrect\n",
369 MTD_DEV_TYPE(id->type), id->num, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100370 return 1;
Stefan Roese864aa032009-05-12 14:31:56 +0200371
372 start_ok:
373
374 /* Check end/size alignment */
375 for (i = 0; i < mtd->numeraseregions; i++) {
376 start = mtd->eraseregions[i].offset;
377 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
378 if ((part->offset + part->size) == start)
379 goto end_ok;
380 start += mtd->eraseregions[i].erasesize;
381 }
382 }
383 /* Check last sector alignment */
384 if ((part->offset + part->size) == start)
385 goto end_ok;
386
387 printf("%s%d: partition (%s) size alignment incorrect\n",
388 MTD_DEV_TYPE(id->type), id->num, part->name);
389 return 1;
390
391 end_ok:
392 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100393 }
394
395 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100396}
397
398
399/**
400 * Performs sanity check for supplied partition. Offset and size are verified
401 * to be within valid range. Partition type is checked and either
402 * parts_validate_nor() or parts_validate_nand() is called with the argument
403 * of part.
404 *
405 * @param id of the parent device
406 * @param part partition to validate
407 * @return 0 if partition is valid, 1 otherwise
408 */
409static int part_validate(struct mtdids *id, struct part_info *part)
410{
411 if (part->size == SIZE_REMAINING)
412 part->size = id->size - part->offset;
413
414 if (part->offset > id->size) {
415 printf("%s: offset %08x beyond flash size %08x\n",
416 id->mtd_id, part->offset, id->size);
417 return 1;
418 }
419
420 if ((part->offset + part->size) <= part->offset) {
421 printf("%s%d: partition (%s) size too big\n",
422 MTD_DEV_TYPE(id->type), id->num, part->name);
423 return 1;
424 }
425
426 if (part->offset + part->size > id->size) {
427 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
428 return 1;
429 }
430
Stefan Roese864aa032009-05-12 14:31:56 +0200431 /*
432 * Now we need to check if the partition starts and ends on
433 * sector (eraseblock) regions
434 */
435 return part_validate_eraseblock(id, part);
Stefan Roese68d7d652009-03-19 13:30:36 +0100436}
437
438/**
439 * Delete selected partition from the partion list of the specified device.
440 *
441 * @param dev device to delete partition from
442 * @param part partition to delete
443 * @return 0 on success, 1 otherwise
444 */
445static int part_del(struct mtd_device *dev, struct part_info *part)
446{
447 u8 current_save_needed = 0;
448
449 /* if there is only one partition, remove whole device */
450 if (dev->num_parts == 1)
451 return device_del(dev);
452
453 /* otherwise just delete this partition */
454
Stefan Roese76b58832009-05-16 12:04:22 +0200455 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100456 /* we are modyfing partitions for the current device,
457 * update current */
458 struct part_info *curr_pi;
Stefan Roese76b58832009-05-16 12:04:22 +0200459 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100460
461 if (curr_pi) {
462 if (curr_pi == part) {
463 printf("current partition deleted, resetting current to 0\n");
Stefan Roese76b58832009-05-16 12:04:22 +0200464 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100465 } else if (part->offset <= curr_pi->offset) {
Stefan Roese76b58832009-05-16 12:04:22 +0200466 current_mtd_partnum--;
Stefan Roese68d7d652009-03-19 13:30:36 +0100467 }
468 current_save_needed = 1;
469 }
470 }
471
Stefan Roese68d7d652009-03-19 13:30:36 +0100472 list_del(&part->link);
473 free(part);
474 dev->num_parts--;
475
476 if (current_save_needed > 0)
477 current_save();
478 else
479 index_partitions();
480
481 return 0;
482}
483
484/**
485 * Delete all partitions from parts head list, free memory.
486 *
487 * @param head list of partitions to delete
488 */
489static void part_delall(struct list_head *head)
490{
491 struct list_head *entry, *n;
492 struct part_info *part_tmp;
493
494 /* clean tmp_list and free allocated memory */
495 list_for_each_safe(entry, n, head) {
496 part_tmp = list_entry(entry, struct part_info, link);
497
Stefan Roese68d7d652009-03-19 13:30:36 +0100498 list_del(entry);
499 free(part_tmp);
500 }
501}
502
503/**
504 * Add new partition to the supplied partition list. Make sure partitions are
505 * sorted by offset in ascending order.
506 *
507 * @param head list this partition is to be added to
508 * @param new partition to be added
509 */
510static int part_sort_add(struct mtd_device *dev, struct part_info *part)
511{
512 struct list_head *entry;
513 struct part_info *new_pi, *curr_pi;
514
515 /* link partition to parrent dev */
516 part->dev = dev;
517
518 if (list_empty(&dev->parts)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +0200519 debug("part_sort_add: list empty\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100520 list_add(&part->link, &dev->parts);
521 dev->num_parts++;
522 index_partitions();
523 return 0;
524 }
525
526 new_pi = list_entry(&part->link, struct part_info, link);
527
528 /* get current partition info if we are updating current device */
529 curr_pi = NULL;
Stefan Roese76b58832009-05-16 12:04:22 +0200530 if (dev == current_mtd_dev)
531 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100532
533 list_for_each(entry, &dev->parts) {
534 struct part_info *pi;
535
536 pi = list_entry(entry, struct part_info, link);
537
538 /* be compliant with kernel cmdline, allow only one partition at offset zero */
539 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
540 printf("cannot add second partition at offset 0\n");
541 return 1;
542 }
543
544 if (new_pi->offset <= pi->offset) {
545 list_add_tail(&part->link, entry);
546 dev->num_parts++;
547
548 if (curr_pi && (pi->offset <= curr_pi->offset)) {
549 /* we are modyfing partitions for the current
550 * device, update current */
Stefan Roese76b58832009-05-16 12:04:22 +0200551 current_mtd_partnum++;
Stefan Roese68d7d652009-03-19 13:30:36 +0100552 current_save();
553 } else {
554 index_partitions();
555 }
556 return 0;
557 }
558 }
559
560 list_add_tail(&part->link, &dev->parts);
561 dev->num_parts++;
562 index_partitions();
563 return 0;
564}
565
566/**
567 * Add provided partition to the partition list of a given device.
568 *
569 * @param dev device to which partition is added
570 * @param part partition to be added
571 * @return 0 on success, 1 otherwise
572 */
573static int part_add(struct mtd_device *dev, struct part_info *part)
574{
575 /* verify alignment and size */
576 if (part_validate(dev->id, part) != 0)
577 return 1;
578
579 /* partition is ok, add it to the list */
580 if (part_sort_add(dev, part) != 0)
581 return 1;
582
583 return 0;
584}
585
586/**
587 * Parse one partition definition, allocate memory and return pointer to this
588 * location in retpart.
589 *
590 * @param partdef pointer to the partition definition string i.e. <part-def>
591 * @param ret output pointer to next char after parse completes (output)
592 * @param retpart pointer to the allocated partition (output)
593 * @return 0 on success, 1 otherwise
594 */
595static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
596{
597 struct part_info *part;
598 unsigned long size;
599 unsigned long offset;
600 const char *name;
601 int name_len;
602 unsigned int mask_flags;
603 const char *p;
604
605 p = partdef;
606 *retpart = NULL;
607 *ret = NULL;
608
609 /* fetch the partition size */
610 if (*p == '-') {
611 /* assign all remaining space to this partition */
Wolfgang Denke1d29502010-04-28 10:58:10 +0200612 debug("'-': remaining size assigned\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100613 size = SIZE_REMAINING;
614 p++;
615 } else {
616 size = memsize_parse(p, &p);
617 if (size < MIN_PART_SIZE) {
618 printf("partition size too small (%lx)\n", size);
619 return 1;
620 }
621 }
622
623 /* check for offset */
624 offset = OFFSET_NOT_SPECIFIED;
625 if (*p == '@') {
626 p++;
627 offset = memsize_parse(p, &p);
628 }
629
630 /* now look for the name */
631 if (*p == '(') {
632 name = ++p;
633 if ((p = strchr(name, ')')) == NULL) {
634 printf("no closing ) found in partition name\n");
635 return 1;
636 }
637 name_len = p - name + 1;
638 if ((name_len - 1) == 0) {
639 printf("empty partition name\n");
640 return 1;
641 }
642 p++;
643 } else {
644 /* 0x00000000@0x00000000 */
645 name_len = 22;
646 name = NULL;
647 }
648
649 /* test for options */
650 mask_flags = 0;
651 if (strncmp(p, "ro", 2) == 0) {
652 mask_flags |= MTD_WRITEABLE_CMD;
653 p += 2;
654 }
655
656 /* check for next partition definition */
657 if (*p == ',') {
658 if (size == SIZE_REMAINING) {
659 *ret = NULL;
660 printf("no partitions allowed after a fill-up partition\n");
661 return 1;
662 }
663 *ret = ++p;
664 } else if ((*p == ';') || (*p == '\0')) {
665 *ret = p;
666 } else {
667 printf("unexpected character '%c' at the end of partition\n", *p);
668 *ret = NULL;
669 return 1;
670 }
671
672 /* allocate memory */
673 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
674 if (!part) {
675 printf("out of memory\n");
676 return 1;
677 }
678 memset(part, 0, sizeof(struct part_info) + name_len);
679 part->size = size;
680 part->offset = offset;
681 part->mask_flags = mask_flags;
682 part->name = (char *)(part + 1);
683
684 if (name) {
685 /* copy user provided name */
686 strncpy(part->name, name, name_len - 1);
687 part->auto_name = 0;
688 } else {
689 /* auto generated name in form of size@offset */
690 sprintf(part->name, "0x%08lx@0x%08lx", size, offset);
691 part->auto_name = 1;
692 }
693
694 part->name[name_len - 1] = '\0';
695 INIT_LIST_HEAD(&part->link);
696
Wolfgang Denke1d29502010-04-28 10:58:10 +0200697 debug("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100698 part->name, part->size,
699 part->offset, part->mask_flags);
700
701 *retpart = part;
702 return 0;
703}
704
705/**
706 * Check device number to be within valid range for given device type.
707 *
Ben Gardiner0a026d32010-08-31 17:48:00 -0400708 * @param type mtd type
709 * @param num mtd number
710 * @param size a pointer to the size of the mtd device (output)
Stefan Roese68d7d652009-03-19 13:30:36 +0100711 * @return 0 if device is valid, 1 otherwise
712 */
713int mtd_device_validate(u8 type, u8 num, u32 *size)
714{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400715 struct mtd_info *mtd = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100716
Ben Gardiner0a026d32010-08-31 17:48:00 -0400717 if (get_mtd_info(type, num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200718 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100719
Stefan Roese864aa032009-05-12 14:31:56 +0200720 *size = mtd->size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100721
Stefan Roese864aa032009-05-12 14:31:56 +0200722 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100723}
724
725/**
726 * Delete all mtd devices from a supplied devices list, free memory allocated for
727 * each device and delete all device partitions.
728 *
729 * @return 0 on success, 1 otherwise
730 */
731static int device_delall(struct list_head *head)
732{
733 struct list_head *entry, *n;
734 struct mtd_device *dev_tmp;
735
736 /* clean devices list */
737 list_for_each_safe(entry, n, head) {
738 dev_tmp = list_entry(entry, struct mtd_device, link);
739 list_del(entry);
740 part_delall(&dev_tmp->parts);
741 free(dev_tmp);
742 }
743 INIT_LIST_HEAD(&devices);
744
745 return 0;
746}
747
748/**
749 * If provided device exists it's partitions are deleted, device is removed
750 * from device list and device memory is freed.
751 *
752 * @param dev device to be deleted
753 * @return 0 on success, 1 otherwise
754 */
755static int device_del(struct mtd_device *dev)
756{
757 part_delall(&dev->parts);
758 list_del(&dev->link);
759 free(dev);
760
Stefan Roese76b58832009-05-16 12:04:22 +0200761 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100762 /* we just deleted current device */
763 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200764 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100765 } else {
766 /* reset first partition from first dev from the
767 * devices list as current */
Stefan Roese76b58832009-05-16 12:04:22 +0200768 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
769 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100770 }
771 current_save();
772 return 0;
773 }
774
775 index_partitions();
776 return 0;
777}
778
779/**
780 * Search global device list and return pointer to the device of type and num
781 * specified.
782 *
783 * @param type device type
784 * @param num device number
785 * @return NULL if requested device does not exist
786 */
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100787struct mtd_device *device_find(u8 type, u8 num)
Stefan Roese68d7d652009-03-19 13:30:36 +0100788{
789 struct list_head *entry;
790 struct mtd_device *dev_tmp;
791
792 list_for_each(entry, &devices) {
793 dev_tmp = list_entry(entry, struct mtd_device, link);
794
795 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
796 return dev_tmp;
797 }
798
799 return NULL;
800}
801
802/**
803 * Add specified device to the global device list.
804 *
805 * @param dev device to be added
806 */
807static void device_add(struct mtd_device *dev)
808{
809 u8 current_save_needed = 0;
810
811 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200812 current_mtd_dev = dev;
813 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100814 current_save_needed = 1;
815 }
816
817 list_add_tail(&dev->link, &devices);
818
819 if (current_save_needed > 0)
820 current_save();
821 else
822 index_partitions();
823}
824
825/**
826 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
827 * return pointer to the device structure.
828 *
829 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
830 * @param ret output pointer to next char after parse completes (output)
831 * @param retdev pointer to the allocated device (output)
832 * @return 0 on success, 1 otherwise
833 */
834static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
835{
836 struct mtd_device *dev;
837 struct part_info *part;
838 struct mtdids *id;
839 const char *mtd_id;
840 unsigned int mtd_id_len;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200841 const char *p;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200842 const char *pend;
Stefan Roese68d7d652009-03-19 13:30:36 +0100843 LIST_HEAD(tmp_list);
844 struct list_head *entry, *n;
845 u16 num_parts;
846 u32 offset;
847 int err = 1;
848
Wolfgang Denke1d29502010-04-28 10:58:10 +0200849 debug("===device_parse===\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100850
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200851 assert(retdev);
852 *retdev = NULL;
853
854 if (ret)
855 *ret = NULL;
856
Stefan Roese68d7d652009-03-19 13:30:36 +0100857 /* fetch <mtd-id> */
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200858 mtd_id = p = mtd_dev;
Stefan Roese68d7d652009-03-19 13:30:36 +0100859 if (!(p = strchr(mtd_id, ':'))) {
860 printf("no <mtd-id> identifier\n");
861 return 1;
862 }
863 mtd_id_len = p - mtd_id + 1;
864 p++;
865
866 /* verify if we have a valid device specified */
867 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
868 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
869 return 1;
870 }
871
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200872#ifdef DEBUG
873 pend = strchr(p, ';');
874#endif
Wolfgang Denke1d29502010-04-28 10:58:10 +0200875 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100876 id->type, MTD_DEV_TYPE(id->type),
877 id->num, id->mtd_id);
Wolfgang Denke1d29502010-04-28 10:58:10 +0200878 debug("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p);
Stefan Roese68d7d652009-03-19 13:30:36 +0100879
880
881 /* parse partitions */
882 num_parts = 0;
883
884 offset = 0;
885 if ((dev = device_find(id->type, id->num)) != NULL) {
886 /* if device already exists start at the end of the last partition */
887 part = list_entry(dev->parts.prev, struct part_info, link);
888 offset = part->offset + part->size;
889 }
890
891 while (p && (*p != '\0') && (*p != ';')) {
892 err = 1;
893 if ((part_parse(p, &p, &part) != 0) || (!part))
894 break;
895
896 /* calculate offset when not specified */
897 if (part->offset == OFFSET_NOT_SPECIFIED)
898 part->offset = offset;
899 else
900 offset = part->offset;
901
902 /* verify alignment and size */
903 if (part_validate(id, part) != 0)
904 break;
905
906 offset += part->size;
907
908 /* partition is ok, add it to the list */
909 list_add_tail(&part->link, &tmp_list);
910 num_parts++;
911 err = 0;
912 }
913 if (err == 1) {
914 part_delall(&tmp_list);
915 return 1;
916 }
917
918 if (num_parts == 0) {
919 printf("no partitions for device %s%d (%s)\n",
920 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
921 return 1;
922 }
923
Wolfgang Denke1d29502010-04-28 10:58:10 +0200924 debug("\ntotal partitions: %d\n", num_parts);
Stefan Roese68d7d652009-03-19 13:30:36 +0100925
926 /* check for next device presence */
927 if (p) {
928 if (*p == ';') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200929 if (ret)
930 *ret = ++p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100931 } else if (*p == '\0') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200932 if (ret)
933 *ret = p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100934 } else {
935 printf("unexpected character '%c' at the end of device\n", *p);
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200936 if (ret)
937 *ret = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100938 return 1;
939 }
940 }
941
942 /* allocate memory for mtd_device structure */
943 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
944 printf("out of memory\n");
945 return 1;
946 }
947 memset(dev, 0, sizeof(struct mtd_device));
948 dev->id = id;
949 dev->num_parts = 0; /* part_sort_add increments num_parts */
950 INIT_LIST_HEAD(&dev->parts);
951 INIT_LIST_HEAD(&dev->link);
952
953 /* move partitions from tmp_list to dev->parts */
954 list_for_each_safe(entry, n, &tmp_list) {
955 part = list_entry(entry, struct part_info, link);
956 list_del(entry);
957 if (part_sort_add(dev, part) != 0) {
958 device_del(dev);
959 return 1;
960 }
961 }
962
963 *retdev = dev;
964
Wolfgang Denke1d29502010-04-28 10:58:10 +0200965 debug("===\n\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100966 return 0;
967}
968
969/**
970 * Initialize global device list.
971 *
972 * @return 0 on success, 1 otherwise
973 */
974static int mtd_devices_init(void)
975{
976 last_parts[0] = '\0';
Stefan Roese76b58832009-05-16 12:04:22 +0200977 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100978 current_save();
979
980 return device_delall(&devices);
981}
982
983/*
984 * Search global mtdids list and find id of requested type and number.
985 *
986 * @return pointer to the id if it exists, NULL otherwise
987 */
988static struct mtdids* id_find(u8 type, u8 num)
989{
990 struct list_head *entry;
991 struct mtdids *id;
992
993 list_for_each(entry, &mtdids) {
994 id = list_entry(entry, struct mtdids, link);
995
996 if ((id->type == type) && (id->num == num))
997 return id;
998 }
999
1000 return NULL;
1001}
1002
1003/**
1004 * Search global mtdids list and find id of a requested mtd_id.
1005 *
1006 * Note: first argument is not null terminated.
1007 *
1008 * @param mtd_id string containing requested mtd_id
1009 * @param mtd_id_len length of supplied mtd_id
1010 * @return pointer to the id if it exists, NULL otherwise
1011 */
1012static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1013{
1014 struct list_head *entry;
1015 struct mtdids *id;
1016
Wolfgang Denke1d29502010-04-28 10:58:10 +02001017 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001018 mtd_id_len, mtd_id, mtd_id_len);
1019
1020 list_for_each(entry, &mtdids) {
1021 id = list_entry(entry, struct mtdids, link);
1022
Wolfgang Denke1d29502010-04-28 10:58:10 +02001023 debug("entry: '%s' (len = %d)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001024 id->mtd_id, strlen(id->mtd_id));
1025
1026 if (mtd_id_len != strlen(id->mtd_id))
1027 continue;
1028 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1029 return id;
1030 }
1031
1032 return NULL;
1033}
1034
1035/**
1036 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1037 * return device type and number.
1038 *
1039 * @param id string describing device id
1040 * @param ret_id output pointer to next char after parse completes (output)
1041 * @param dev_type parsed device type (output)
1042 * @param dev_num parsed device number (output)
1043 * @return 0 on success, 1 otherwise
1044 */
1045int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
1046{
1047 const char *p = id;
1048
1049 *dev_type = 0;
1050 if (strncmp(p, "nand", 4) == 0) {
1051 *dev_type = MTD_DEV_TYPE_NAND;
1052 p += 4;
1053 } else if (strncmp(p, "nor", 3) == 0) {
1054 *dev_type = MTD_DEV_TYPE_NOR;
1055 p += 3;
1056 } else if (strncmp(p, "onenand", 7) == 0) {
1057 *dev_type = MTD_DEV_TYPE_ONENAND;
1058 p += 7;
1059 } else {
1060 printf("incorrect device type in %s\n", id);
1061 return 1;
1062 }
1063
1064 if (!isdigit(*p)) {
1065 printf("incorrect device number in %s\n", id);
1066 return 1;
1067 }
1068
1069 *dev_num = simple_strtoul(p, (char **)&p, 0);
1070 if (ret_id)
1071 *ret_id = p;
1072 return 0;
1073}
1074
1075/**
1076 * Process all devices and generate corresponding mtdparts string describing
1077 * all partitions on all devices.
1078 *
1079 * @param buf output buffer holding generated mtdparts string (output)
1080 * @param buflen buffer size
1081 * @return 0 on success, 1 otherwise
1082 */
1083static int generate_mtdparts(char *buf, u32 buflen)
1084{
1085 struct list_head *pentry, *dentry;
1086 struct mtd_device *dev;
1087 struct part_info *part, *prev_part;
1088 char *p = buf;
1089 char tmpbuf[32];
1090 u32 size, offset, len, part_cnt;
1091 u32 maxlen = buflen - 1;
1092
Wolfgang Denke1d29502010-04-28 10:58:10 +02001093 debug("--- generate_mtdparts ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001094
1095 if (list_empty(&devices)) {
1096 buf[0] = '\0';
1097 return 0;
1098 }
1099
1100 sprintf(p, "mtdparts=");
1101 p += 9;
1102
1103 list_for_each(dentry, &devices) {
1104 dev = list_entry(dentry, struct mtd_device, link);
1105
1106 /* copy mtd_id */
1107 len = strlen(dev->id->mtd_id) + 1;
1108 if (len > maxlen)
1109 goto cleanup;
1110 memcpy(p, dev->id->mtd_id, len - 1);
1111 p += len - 1;
1112 *(p++) = ':';
1113 maxlen -= len;
1114
1115 /* format partitions */
1116 prev_part = NULL;
1117 part_cnt = 0;
1118 list_for_each(pentry, &dev->parts) {
1119 part = list_entry(pentry, struct part_info, link);
1120 size = part->size;
1121 offset = part->offset;
1122 part_cnt++;
1123
1124 /* partition size */
1125 memsize_format(tmpbuf, size);
1126 len = strlen(tmpbuf);
1127 if (len > maxlen)
1128 goto cleanup;
1129 memcpy(p, tmpbuf, len);
1130 p += len;
1131 maxlen -= len;
1132
1133
1134 /* add offset only when there is a gap between
1135 * partitions */
1136 if ((!prev_part && (offset != 0)) ||
1137 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1138
1139 memsize_format(tmpbuf, offset);
1140 len = strlen(tmpbuf) + 1;
1141 if (len > maxlen)
1142 goto cleanup;
1143 *(p++) = '@';
1144 memcpy(p, tmpbuf, len - 1);
1145 p += len - 1;
1146 maxlen -= len;
1147 }
1148
1149 /* copy name only if user supplied */
1150 if(!part->auto_name) {
1151 len = strlen(part->name) + 2;
1152 if (len > maxlen)
1153 goto cleanup;
1154
1155 *(p++) = '(';
1156 memcpy(p, part->name, len - 2);
1157 p += len - 2;
1158 *(p++) = ')';
1159 maxlen -= len;
1160 }
1161
1162 /* ro mask flag */
1163 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1164 len = 2;
1165 if (len > maxlen)
1166 goto cleanup;
1167 *(p++) = 'r';
1168 *(p++) = 'o';
1169 maxlen -= 2;
1170 }
1171
1172 /* print ',' separator if there are other partitions
1173 * following */
1174 if (dev->num_parts > part_cnt) {
1175 if (1 > maxlen)
1176 goto cleanup;
1177 *(p++) = ',';
1178 maxlen--;
1179 }
1180 prev_part = part;
1181 }
1182 /* print ';' separator if there are other devices following */
1183 if (dentry->next != &devices) {
1184 if (1 > maxlen)
1185 goto cleanup;
1186 *(p++) = ';';
1187 maxlen--;
1188 }
1189 }
1190
1191 /* we still have at least one char left, as we decremented maxlen at
1192 * the begining */
1193 *p = '\0';
1194
1195 return 0;
1196
1197cleanup:
1198 last_parts[0] = '\0';
1199 return 1;
1200}
1201
1202/**
1203 * Call generate_mtdparts to process all devices and generate corresponding
1204 * mtdparts string, save it in mtdparts environment variable.
1205 *
1206 * @param buf output buffer holding generated mtdparts string (output)
1207 * @param buflen buffer size
1208 * @return 0 on success, 1 otherwise
1209 */
1210static int generate_mtdparts_save(char *buf, u32 buflen)
1211{
1212 int ret;
1213
1214 ret = generate_mtdparts(buf, buflen);
1215
1216 if ((buf[0] != '\0') && (ret == 0))
1217 setenv("mtdparts", buf);
1218 else
1219 setenv("mtdparts", NULL);
1220
1221 return ret;
1222}
1223
Ben Gardiner04ac3802010-08-31 17:48:02 -04001224#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
Stefan Roese68d7d652009-03-19 13:30:36 +01001225/**
Ben Gardiner04ac3802010-08-31 17:48:02 -04001226 * Get the net size (w/o bad blocks) of the given partition.
1227 *
1228 * @param mtd the mtd info
1229 * @param part the partition
1230 * @return the calculated net size of this partition
Stefan Roese68d7d652009-03-19 13:30:36 +01001231 */
Ben Gardiner04ac3802010-08-31 17:48:02 -04001232static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1233{
Scott Wood36650ca2010-09-09 15:40:03 -05001234 uint64_t i, net_size = 0;
1235
Ben Gardiner04ac3802010-08-31 17:48:02 -04001236 if (!mtd->block_isbad)
1237 return part->size;
1238
Ben Gardiner04ac3802010-08-31 17:48:02 -04001239 for (i = 0; i < part->size; i += mtd->erasesize) {
1240 if (!mtd->block_isbad(mtd, part->offset + i))
1241 net_size += mtd->erasesize;
1242 }
Scott Wood36650ca2010-09-09 15:40:03 -05001243
Ben Gardiner04ac3802010-08-31 17:48:02 -04001244 return net_size;
1245}
1246#endif
1247
1248static void print_partition_table(void)
Stefan Roese68d7d652009-03-19 13:30:36 +01001249{
1250 struct list_head *dentry, *pentry;
1251 struct part_info *part;
1252 struct mtd_device *dev;
1253 int part_num;
1254
Stefan Roese68d7d652009-03-19 13:30:36 +01001255 list_for_each(dentry, &devices) {
1256 dev = list_entry(dentry, struct mtd_device, link);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001257 /* list partitions for given device */
1258 part_num = 0;
1259#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1260 struct mtd_info *mtd;
1261
1262 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1263 return;
1264
1265 printf("\ndevice %s%d <%s>, # parts = %d\n",
1266 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1267 dev->id->mtd_id, dev->num_parts);
1268 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1269
1270 list_for_each(pentry, &dev->parts) {
1271 u32 net_size;
1272 char *size_note;
1273
1274 part = list_entry(pentry, struct part_info, link);
1275 net_size = net_part_size(mtd, part);
1276 size_note = part->size == net_size ? " " : " (!)";
1277 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1278 part_num, part->name, part->size,
1279 net_size, size_note, part->offset,
1280 part->mask_flags);
1281#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001282 printf("\ndevice %s%d <%s>, # parts = %d\n",
1283 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1284 dev->id->mtd_id, dev->num_parts);
David Brownell08f077d2009-04-16 19:55:48 -07001285 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001286
Stefan Roese68d7d652009-03-19 13:30:36 +01001287 list_for_each(pentry, &dev->parts) {
1288 part = list_entry(pentry, struct part_info, link);
1289 printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
1290 part_num, part->name, part->size,
1291 part->offset, part->mask_flags);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001292#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001293 part_num++;
1294 }
1295 }
Ben Gardiner04ac3802010-08-31 17:48:02 -04001296
Stefan Roese68d7d652009-03-19 13:30:36 +01001297 if (list_empty(&devices))
1298 printf("no partitions defined\n");
Ben Gardiner04ac3802010-08-31 17:48:02 -04001299}
1300
1301/**
1302 * Format and print out a partition list for each device from global device
1303 * list.
1304 */
1305static void list_partitions(void)
1306{
1307 struct part_info *part;
1308
1309 debug("\n---list_partitions---\n");
1310 print_partition_table();
Stefan Roese68d7d652009-03-19 13:30:36 +01001311
Stefan Roese76b58832009-05-16 12:04:22 +02001312 /* current_mtd_dev is not NULL only when we have non empty device list */
1313 if (current_mtd_dev) {
1314 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001315 if (part) {
1316 printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001317 MTD_DEV_TYPE(current_mtd_dev->id->type),
1318 current_mtd_dev->id->num, current_mtd_partnum,
Stefan Roese68d7d652009-03-19 13:30:36 +01001319 part->name, part->size, part->offset);
1320 } else {
1321 printf("could not get current partition info\n\n");
1322 }
1323 }
1324
1325 printf("\ndefaults:\n");
Wolfgang Denk36c91692009-05-17 16:01:54 +02001326 printf("mtdids : %s\n",
1327 mtdids_default ? mtdids_default : "none");
Anatolij Gustschina6934472010-02-24 00:29:44 +01001328 /*
1329 * Using printf() here results in printbuffer overflow
1330 * if default mtdparts string is greater than console
1331 * printbuffer. Use puts() to prevent system crashes.
1332 */
1333 puts("mtdparts: ");
1334 puts(mtdparts_default ? mtdparts_default : "none");
1335 puts("\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001336}
1337
1338/**
1339 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1340 * corresponding device and verify partition number.
1341 *
1342 * @param id string describing device and partition or partition name
1343 * @param dev pointer to the requested device (output)
1344 * @param part_num verified partition number (output)
1345 * @param part pointer to requested partition (output)
1346 * @return 0 on success, 1 otherwise
1347 */
1348int find_dev_and_part(const char *id, struct mtd_device **dev,
1349 u8 *part_num, struct part_info **part)
1350{
1351 struct list_head *dentry, *pentry;
1352 u8 type, dnum, pnum;
1353 const char *p;
1354
Wolfgang Denke1d29502010-04-28 10:58:10 +02001355 debug("--- find_dev_and_part ---\nid = %s\n", id);
Stefan Roese68d7d652009-03-19 13:30:36 +01001356
1357 list_for_each(dentry, &devices) {
1358 *part_num = 0;
1359 *dev = list_entry(dentry, struct mtd_device, link);
1360 list_for_each(pentry, &(*dev)->parts) {
1361 *part = list_entry(pentry, struct part_info, link);
1362 if (strcmp((*part)->name, id) == 0)
1363 return 0;
1364 (*part_num)++;
1365 }
1366 }
1367
1368 p = id;
1369 *dev = NULL;
1370 *part = NULL;
1371 *part_num = 0;
1372
1373 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1374 return 1;
1375
1376 if ((*p++ != ',') || (*p == '\0')) {
1377 printf("no partition number specified\n");
1378 return 1;
1379 }
1380 pnum = simple_strtoul(p, (char **)&p, 0);
1381 if (*p != '\0') {
1382 printf("unexpected trailing character '%c'\n", *p);
1383 return 1;
1384 }
1385
1386 if ((*dev = device_find(type, dnum)) == NULL) {
1387 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1388 return 1;
1389 }
1390
1391 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1392 printf("no such partition\n");
1393 *dev = NULL;
1394 return 1;
1395 }
1396
1397 *part_num = pnum;
1398
1399 return 0;
1400}
1401
1402/**
1403 * Find and delete partition. For partition id format see find_dev_and_part().
1404 *
1405 * @param id string describing device and partition
1406 * @return 0 on success, 1 otherwise
1407 */
1408static int delete_partition(const char *id)
1409{
1410 u8 pnum;
1411 struct mtd_device *dev;
1412 struct part_info *part;
1413
1414 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1415
Wolfgang Denke1d29502010-04-28 10:58:10 +02001416 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001417 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1418 part->name, part->size, part->offset);
1419
1420 if (part_del(dev, part) != 0)
1421 return 1;
1422
1423 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1424 printf("generated mtdparts too long, reseting to null\n");
1425 return 1;
1426 }
1427 return 0;
1428 }
1429
1430 printf("partition %s not found\n", id);
1431 return 1;
1432}
1433
Ben Gardinerca75b202010-08-31 17:48:03 -04001434#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1435/**
1436 * Increase the size of the given partition so that it's net size is at least
1437 * as large as the size member and such that the next partition would start on a
1438 * good block if it were adjacent to this partition.
1439 *
1440 * @param mtd the mtd device
1441 * @param part the partition
1442 * @param next_offset pointer to the offset of the next partition after this
1443 * partition's size has been modified (output)
1444 */
1445static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1446 uint64_t *next_offset)
1447{
1448 uint64_t net_size, padding_size = 0;
1449 int truncated;
1450
1451 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1452 &truncated);
1453
1454 /*
1455 * Absorb bad blocks immediately following this
1456 * partition also into the partition, such that
1457 * the next partition starts with a good block.
1458 */
1459 if (!truncated) {
1460 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1461 mtd->erasesize, &padding_size, &truncated);
1462 if (truncated)
1463 padding_size = 0;
1464 else
1465 padding_size -= mtd->erasesize;
1466 }
1467
1468 if (truncated) {
1469 printf("truncated partition %s to %lld bytes\n", part->name,
1470 (uint64_t) net_size + padding_size);
1471 }
1472
1473 part->size = net_size + padding_size;
1474 *next_offset = part->offset + part->size;
1475}
1476
1477/**
1478 * Adjust all of the partition sizes, such that all partitions are at least
1479 * as big as their mtdparts environment variable sizes and they each start
1480 * on a good block.
1481 *
1482 * @return 0 on success, 1 otherwise
1483 */
1484static int spread_partitions(void)
1485{
1486 struct list_head *dentry, *pentry;
1487 struct mtd_device *dev;
1488 struct part_info *part;
1489 struct mtd_info *mtd;
1490 int part_num;
1491 uint64_t cur_offs;
1492
1493 list_for_each(dentry, &devices) {
1494 dev = list_entry(dentry, struct mtd_device, link);
1495
1496 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1497 return 1;
1498
1499 part_num = 0;
1500 cur_offs = 0;
1501 list_for_each(pentry, &dev->parts) {
1502 part = list_entry(pentry, struct part_info, link);
1503
1504 debug("spread_partitions: device = %s%d, partition %d ="
1505 " (%s) 0x%08x@0x%08x\n",
1506 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1507 part_num, part->name, part->size,
1508 part->offset);
1509
1510 if (cur_offs > part->offset)
1511 part->offset = cur_offs;
1512
1513 spread_partition(mtd, part, &cur_offs);
1514
1515 part_num++;
1516 }
1517 }
1518
1519 index_partitions();
1520
1521 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1522 printf("generated mtdparts too long, reseting to null\n");
1523 return 1;
1524 }
1525 return 0;
1526}
1527#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1528
Stefan Roese68d7d652009-03-19 13:30:36 +01001529/**
1530 * Accept character string describing mtd partitions and call device_parse()
1531 * for each entry. Add created devices to the global devices list.
1532 *
1533 * @param mtdparts string specifing mtd partitions
1534 * @return 0 on success, 1 otherwise
1535 */
1536static int parse_mtdparts(const char *const mtdparts)
1537{
1538 const char *p = mtdparts;
1539 struct mtd_device *dev;
1540 int err = 1;
1541
Wolfgang Denke1d29502010-04-28 10:58:10 +02001542 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
Stefan Roese68d7d652009-03-19 13:30:36 +01001543
1544 /* delete all devices and partitions */
1545 if (mtd_devices_init() != 0) {
1546 printf("could not initialise device list\n");
1547 return err;
1548 }
1549
1550 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1551 p = getenv("mtdparts");
1552
1553 if (strncmp(p, "mtdparts=", 9) != 0) {
1554 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1555 return err;
1556 }
1557 p += 9;
1558
1559 while (p && (*p != '\0')) {
1560 err = 1;
1561 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1562 break;
1563
Wolfgang Denke1d29502010-04-28 10:58:10 +02001564 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01001565 dev->id->num, dev->id->mtd_id);
1566
1567 /* check if parsed device is already on the list */
1568 if (device_find(dev->id->type, dev->id->num) != NULL) {
1569 printf("device %s%d redefined, please correct mtdparts variable\n",
1570 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1571 break;
1572 }
1573
1574 list_add_tail(&dev->link, &devices);
1575 err = 0;
1576 }
1577 if (err == 1) {
1578 device_delall(&devices);
1579 return 1;
1580 }
1581
1582 return 0;
1583}
1584
1585/**
1586 * Parse provided string describing mtdids mapping (see file header for mtdids
1587 * variable format). Allocate memory for each entry and add all found entries
1588 * to the global mtdids list.
1589 *
1590 * @param ids mapping string
1591 * @return 0 on success, 1 otherwise
1592 */
1593static int parse_mtdids(const char *const ids)
1594{
1595 const char *p = ids;
1596 const char *mtd_id;
1597 int mtd_id_len;
1598 struct mtdids *id;
1599 struct list_head *entry, *n;
1600 struct mtdids *id_tmp;
1601 u8 type, num;
1602 u32 size;
1603 int ret = 1;
1604
Wolfgang Denke1d29502010-04-28 10:58:10 +02001605 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
Stefan Roese68d7d652009-03-19 13:30:36 +01001606
1607 /* clean global mtdids list */
1608 list_for_each_safe(entry, n, &mtdids) {
1609 id_tmp = list_entry(entry, struct mtdids, link);
Wolfgang Denke1d29502010-04-28 10:58:10 +02001610 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
Stefan Roese68d7d652009-03-19 13:30:36 +01001611 list_del(entry);
1612 free(id_tmp);
1613 }
1614 last_ids[0] = '\0';
1615 INIT_LIST_HEAD(&mtdids);
1616
1617 while(p && (*p != '\0')) {
1618
1619 ret = 1;
1620 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1621 if (mtd_id_parse(p, &p, &type, &num) != 0)
1622 break;
1623
1624 if (*p != '=') {
1625 printf("mtdids: incorrect <dev-num>\n");
1626 break;
1627 }
1628 p++;
1629
1630 /* check if requested device exists */
1631 if (mtd_device_validate(type, num, &size) != 0)
1632 return 1;
1633
1634 /* locate <mtd-id> */
1635 mtd_id = p;
1636 if ((p = strchr(mtd_id, ',')) != NULL) {
1637 mtd_id_len = p - mtd_id + 1;
1638 p++;
1639 } else {
1640 mtd_id_len = strlen(mtd_id) + 1;
1641 }
1642 if (mtd_id_len == 0) {
1643 printf("mtdids: no <mtd-id> identifier\n");
1644 break;
1645 }
1646
1647 /* check if this id is already on the list */
1648 int double_entry = 0;
1649 list_for_each(entry, &mtdids) {
1650 id_tmp = list_entry(entry, struct mtdids, link);
1651 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1652 double_entry = 1;
1653 break;
1654 }
1655 }
1656 if (double_entry) {
1657 printf("device id %s%d redefined, please correct mtdids variable\n",
1658 MTD_DEV_TYPE(type), num);
1659 break;
1660 }
1661
1662 /* allocate mtdids structure */
1663 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1664 printf("out of memory\n");
1665 break;
1666 }
1667 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1668 id->num = num;
1669 id->type = type;
1670 id->size = size;
1671 id->mtd_id = (char *)(id + 1);
1672 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1673 id->mtd_id[mtd_id_len - 1] = '\0';
1674 INIT_LIST_HEAD(&id->link);
1675
Wolfgang Denke1d29502010-04-28 10:58:10 +02001676 debug("+ id %s%d\t%16d bytes\t%s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001677 MTD_DEV_TYPE(id->type), id->num,
1678 id->size, id->mtd_id);
1679
1680 list_add_tail(&id->link, &mtdids);
1681 ret = 0;
1682 }
1683 if (ret == 1) {
1684 /* clean mtdids list and free allocated memory */
1685 list_for_each_safe(entry, n, &mtdids) {
1686 id_tmp = list_entry(entry, struct mtdids, link);
1687 list_del(entry);
1688 free(id_tmp);
1689 }
1690 return 1;
1691 }
1692
1693 return 0;
1694}
1695
1696/**
1697 * Parse and initialize global mtdids mapping and create global
1698 * device/partition list.
1699 *
1700 * @return 0 on success, 1 otherwise
1701 */
1702int mtdparts_init(void)
1703{
1704 static int initialized = 0;
1705 const char *ids, *parts;
1706 const char *current_partition;
1707 int ids_changed;
1708 char tmp_ep[PARTITION_MAXLEN];
1709
Wolfgang Denke1d29502010-04-28 10:58:10 +02001710 debug("\n---mtdparts_init---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001711 if (!initialized) {
1712 INIT_LIST_HEAD(&mtdids);
1713 INIT_LIST_HEAD(&devices);
1714 memset(last_ids, 0, MTDIDS_MAXLEN);
1715 memset(last_parts, 0, MTDPARTS_MAXLEN);
1716 memset(last_partition, 0, PARTITION_MAXLEN);
1717 initialized = 1;
1718 }
1719
1720 /* get variables */
1721 ids = getenv("mtdids");
1722 parts = getenv("mtdparts");
1723 current_partition = getenv("partition");
1724
1725 /* save it for later parsing, cannot rely on current partition pointer
1726 * as 'partition' variable may be updated during init */
1727 tmp_ep[0] = '\0';
1728 if (current_partition)
1729 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1730
Wolfgang Denke1d29502010-04-28 10:58:10 +02001731 debug("last_ids : %s\n", last_ids);
1732 debug("env_ids : %s\n", ids);
1733 debug("last_parts: %s\n", last_parts);
1734 debug("env_parts : %s\n\n", parts);
Stefan Roese68d7d652009-03-19 13:30:36 +01001735
Wolfgang Denke1d29502010-04-28 10:58:10 +02001736 debug("last_partition : %s\n", last_partition);
1737 debug("env_partition : %s\n", current_partition);
Stefan Roese68d7d652009-03-19 13:30:36 +01001738
1739 /* if mtdids varible is empty try to use defaults */
1740 if (!ids) {
1741 if (mtdids_default) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001742 debug("mtdids variable not defined, using default\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001743 ids = mtdids_default;
1744 setenv("mtdids", (char *)ids);
1745 } else {
1746 printf("mtdids not defined, no default present\n");
1747 return 1;
1748 }
1749 }
1750 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1751 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1752 return 1;
1753 }
1754
1755 /* do no try to use defaults when mtdparts variable is not defined,
1756 * just check the length */
1757 if (!parts)
1758 printf("mtdparts variable not set, see 'help mtdparts'\n");
1759
1760 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1761 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1762 return 1;
1763 }
1764
1765 /* check if we have already parsed those mtdids */
1766 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1767 ids_changed = 0;
1768 } else {
1769 ids_changed = 1;
1770
1771 if (parse_mtdids(ids) != 0) {
1772 mtd_devices_init();
1773 return 1;
1774 }
1775
1776 /* ok it's good, save new ids */
1777 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1778 }
1779
1780 /* parse partitions if either mtdparts or mtdids were updated */
1781 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1782 if (parse_mtdparts(parts) != 0)
1783 return 1;
1784
1785 if (list_empty(&devices)) {
1786 printf("mtdparts_init: no valid partitions\n");
1787 return 1;
1788 }
1789
1790 /* ok it's good, save new parts */
1791 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1792
1793 /* reset first partition from first dev from the list as current */
Stefan Roese76b58832009-05-16 12:04:22 +02001794 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1795 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +01001796 current_save();
1797
Wolfgang Denke1d29502010-04-28 10:58:10 +02001798 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001799 MTD_DEV_TYPE(current_mtd_dev->id->type),
1800 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001801 }
1802
1803 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1804 if (!parts && (last_parts[0] != '\0'))
1805 return mtd_devices_init();
1806
1807 /* do not process current partition if mtdparts variable is null */
1808 if (!parts)
1809 return 0;
1810
1811 /* is current partition set in environment? if so, use it */
1812 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1813 struct part_info *p;
1814 struct mtd_device *cdev;
1815 u8 pnum;
1816
Wolfgang Denke1d29502010-04-28 10:58:10 +02001817 debug("--- getting current partition: %s\n", tmp_ep);
Stefan Roese68d7d652009-03-19 13:30:36 +01001818
1819 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
Stefan Roese76b58832009-05-16 12:04:22 +02001820 current_mtd_dev = cdev;
1821 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001822 current_save();
1823 }
1824 } else if (getenv("partition") == NULL) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001825 debug("no partition variable set, setting...\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001826 current_save();
1827 }
1828
1829 return 0;
1830}
1831
1832/**
1833 * Return pointer to the partition of a requested number from a requested
1834 * device.
1835 *
1836 * @param dev device that is to be searched for a partition
1837 * @param part_num requested partition number
1838 * @return pointer to the part_info, NULL otherwise
1839 */
1840static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1841{
1842 struct list_head *entry;
1843 struct part_info *part;
1844 int num;
1845
1846 if (!dev)
1847 return NULL;
1848
Wolfgang Denke1d29502010-04-28 10:58:10 +02001849 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001850 part_num, MTD_DEV_TYPE(dev->id->type),
1851 dev->id->num, dev->id->mtd_id);
1852
1853 if (part_num >= dev->num_parts) {
1854 printf("invalid partition number %d for device %s%d (%s)\n",
1855 part_num, MTD_DEV_TYPE(dev->id->type),
1856 dev->id->num, dev->id->mtd_id);
1857 return NULL;
1858 }
1859
1860 /* locate partition number, return it */
1861 num = 0;
1862 list_for_each(entry, &dev->parts) {
1863 part = list_entry(entry, struct part_info, link);
1864
1865 if (part_num == num++) {
1866 return part;
1867 }
1868 }
1869
1870 return NULL;
1871}
1872
1873/***************************************************/
1874/* U-boot commands */
1875/***************************************************/
1876/* command line only */
1877/**
1878 * Routine implementing u-boot chpart command. Sets new current partition based
1879 * on the user supplied partition id. For partition id format see find_dev_and_part().
1880 *
1881 * @param cmdtp command internal data
1882 * @param flag command flag
1883 * @param argc number of arguments supplied to the command
1884 * @param argv arguments list
1885 * @return 0 on success, 1 otherwise
1886 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001887int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001888{
1889/* command line only */
1890 struct mtd_device *dev;
1891 struct part_info *part;
1892 u8 pnum;
1893
1894 if (mtdparts_init() !=0)
1895 return 1;
1896
1897 if (argc < 2) {
1898 printf("no partition id specified\n");
1899 return 1;
1900 }
1901
1902 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1903 return 1;
1904
Stefan Roese76b58832009-05-16 12:04:22 +02001905 current_mtd_dev = dev;
1906 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001907 current_save();
1908
1909 printf("partition changed to %s%d,%d\n",
1910 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1911
1912 return 0;
1913}
1914
1915/**
1916 * Routine implementing u-boot mtdparts command. Initialize/update default global
1917 * partition list and process user partition request (list, add, del).
1918 *
1919 * @param cmdtp command internal data
1920 * @param flag command flag
1921 * @param argc number of arguments supplied to the command
1922 * @param argv arguments list
1923 * @return 0 on success, 1 otherwise
1924 */
Wolfgang Denk54841ab2010-06-28 22:00:46 +02001925int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001926{
1927 if (argc == 2) {
1928 if (strcmp(argv[1], "default") == 0) {
1929 setenv("mtdids", (char *)mtdids_default);
1930 setenv("mtdparts", (char *)mtdparts_default);
1931 setenv("partition", NULL);
1932
1933 mtdparts_init();
1934 return 0;
1935 } else if (strcmp(argv[1], "delall") == 0) {
1936 /* this may be the first run, initialize lists if needed */
1937 mtdparts_init();
1938
1939 setenv("mtdparts", NULL);
1940
1941 /* mtd_devices_init() calls current_save() */
1942 return mtd_devices_init();
1943 }
1944 }
1945
1946 /* make sure we are in sync with env variables */
1947 if (mtdparts_init() != 0)
1948 return 1;
1949
1950 if (argc == 1) {
1951 list_partitions();
1952 return 0;
1953 }
1954
1955 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
Ben Gardiner59a50d22010-08-31 17:48:04 -04001956 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
Stefan Roese68d7d652009-03-19 13:30:36 +01001957#define PART_ADD_DESC_MAXLEN 64
1958 char tmpbuf[PART_ADD_DESC_MAXLEN];
Ben Gardiner59a50d22010-08-31 17:48:04 -04001959#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1960 struct mtd_info *mtd;
1961 uint64_t next_offset;
1962#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01001963 u8 type, num, len;
1964 struct mtd_device *dev;
1965 struct mtd_device *dev_tmp;
1966 struct mtdids *id;
1967 struct part_info *p;
1968
1969 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1970 return 1;
1971
1972 if ((id = id_find(type, num)) == NULL) {
1973 printf("no such device %s defined in mtdids variable\n", argv[2]);
1974 return 1;
1975 }
1976
1977 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1978 len += strlen(argv[3]); /* size@offset */
1979 len += strlen(argv[4]) + 2; /* '(' name ')' */
1980 if (argv[5] && (strlen(argv[5]) == 2))
1981 len += 2; /* 'ro' */
1982
1983 if (len >= PART_ADD_DESC_MAXLEN) {
1984 printf("too long partition description\n");
1985 return 1;
1986 }
1987 sprintf(tmpbuf, "%s:%s(%s)%s",
1988 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
Wolfgang Denke1d29502010-04-28 10:58:10 +02001989 debug("add tmpbuf: %s\n", tmpbuf);
Stefan Roese68d7d652009-03-19 13:30:36 +01001990
1991 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
1992 return 1;
1993
Wolfgang Denke1d29502010-04-28 10:58:10 +02001994 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01001995 dev->id->num, dev->id->mtd_id);
1996
Ben Gardiner59a50d22010-08-31 17:48:04 -04001997 p = list_entry(dev->parts.next, struct part_info, link);
1998
1999#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2000 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2001 return 1;
2002
2003 if (!strcmp(&argv[1][3], ".spread")) {
2004 spread_partition(mtd, p, &next_offset);
2005 debug("increased %s to %d bytes\n", p->name, p->size);
2006 }
2007#endif
2008
2009 dev_tmp = device_find(dev->id->type, dev->id->num);
2010 if (dev_tmp == NULL) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002011 device_add(dev);
Ben Gardiner59a50d22010-08-31 17:48:04 -04002012 } else if (part_add(dev_tmp, p) != 0) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002013 /* merge new partition with existing ones*/
Ben Gardiner59a50d22010-08-31 17:48:04 -04002014 device_del(dev);
2015 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01002016 }
2017
2018 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2019 printf("generated mtdparts too long, reseting to null\n");
2020 return 1;
2021 }
2022
2023 return 0;
2024 }
2025
2026 /* mtdparts del part-id */
2027 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02002028 debug("del: part-id = %s\n", argv[2]);
Stefan Roese68d7d652009-03-19 13:30:36 +01002029
2030 return delete_partition(argv[2]);
2031 }
2032
Ben Gardinerca75b202010-08-31 17:48:03 -04002033#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2034 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2035 return spread_partitions();
2036#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2037
Wolfgang Denk47e26b12010-07-17 01:06:04 +02002038 return cmd_usage(cmdtp);
Stefan Roese68d7d652009-03-19 13:30:36 +01002039}
2040
2041/***************************************************/
2042U_BOOT_CMD(
2043 chpart, 2, 0, do_chpart,
2044 "change active partition",
2045 "part-id\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +02002046 " - change active partition (e.g. part-id = nand0,1)"
Stefan Roese68d7d652009-03-19 13:30:36 +01002047);
2048
2049U_BOOT_CMD(
2050 mtdparts, 6, 0, do_mtdparts,
2051 "define flash/nand partitions",
2052 "\n"
2053 " - list partition table\n"
2054 "mtdparts delall\n"
2055 " - delete all partitions\n"
2056 "mtdparts del part-id\n"
2057 " - delete partition (e.g. part-id = nand0,1)\n"
2058 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2059 " - add partition\n"
Ben Gardiner59a50d22010-08-31 17:48:04 -04002060#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2061 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2062 " - add partition, padding size by skipping bad blocks\n"
2063#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01002064 "mtdparts default\n"
Ben Gardinerca75b202010-08-31 17:48:03 -04002065 " - reset partition table to defaults\n"
2066#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2067 "mtdparts spread\n"
2068 " - adjust the sizes of the partitions so they are\n"
2069 " at least as big as the mtdparts variable specifies\n"
2070 " and they each start on a good block\n\n"
2071#else
2072 "\n"
2073#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
Stefan Roese68d7d652009-03-19 13:30:36 +01002074 "-----\n\n"
2075 "this command uses three environment variables:\n\n"
2076 "'partition' - keeps current partition identifier\n\n"
2077 "partition := <part-id>\n"
2078 "<part-id> := <dev-id>,part_num\n\n"
2079 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2080 "mtdids=<idmap>[,<idmap>,...]\n\n"
2081 "<idmap> := <dev-id>=<mtd-id>\n"
2082 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2083 "<dev-num> := mtd device number, 0...\n"
2084 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2085 "'mtdparts' - partition list\n\n"
2086 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2087 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2088 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2089 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2090 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2091 "<offset> := partition start offset within the device\n"
2092 "<name> := '(' NAME ')'\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +02002093 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)"
Stefan Roese68d7d652009-03-19 13:30:36 +01002094);
2095/***************************************************/