blob: 422c069513843f930ce1eeccf2a9aa2e89b7fcf1 [file] [log] [blame]
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 *
Wolfgang Denk1a459662013-07-08 09:37:19 +020024 * SPDX-License-Identifier: GPL-2.0+
Stefan Roese68d7d652009-03-19 13:30:36 +010025 */
26
27/*
28 * Three environment variables are used by the parsing routines:
29 *
30 * 'partition' - keeps current partition identifier
31 *
32 * partition := <part-id>
33 * <part-id> := <dev-id>,part_num
34 *
35 *
36 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
37 *
38 * mtdids=<idmap>[,<idmap>,...]
39 *
40 * <idmap> := <dev-id>=<mtd-id>
41 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
42 * <dev-num> := mtd device number, 0...
43 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
44 *
45 *
46 * 'mtdparts' - partition list
47 *
48 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
49 *
50 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
51 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
52 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
53 * <size> := standard linux memsize OR '-' to denote all remaining space
54 * <offset> := partition start offset within the device
55 * <name> := '(' NAME ')'
56 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
57 *
58 * Notes:
59 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
60 * - if the above variables are not set defaults for a given target are used
61 *
62 * Examples:
63 *
64 * 1 NOR Flash, with 1 single writable partition:
65 * mtdids=nor0=edb7312-nor
66 * mtdparts=mtdparts=edb7312-nor:-
67 *
68 * 1 NOR Flash with 2 partitions, 1 NAND with one
69 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
70 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
71 *
72 */
73
Stefan Roese68d7d652009-03-19 13:30:36 +010074#include <common.h>
75#include <command.h>
76#include <malloc.h>
Ladislav Michlb93b24b2009-03-23 12:06:07 +010077#include <jffs2/load_kernel.h>
Stefan Roese68d7d652009-03-19 13:30:36 +010078#include <linux/list.h>
79#include <linux/ctype.h>
Stefan Roese864aa032009-05-12 14:31:56 +020080#include <linux/err.h>
81#include <linux/mtd/mtd.h>
Stefan Roese68d7d652009-03-19 13:30:36 +010082
83#if defined(CONFIG_CMD_NAND)
Stefan Roese68d7d652009-03-19 13:30:36 +010084#include <linux/mtd/nand.h>
85#include <nand.h>
Stefan Roese68d7d652009-03-19 13:30:36 +010086#endif
87
88#if defined(CONFIG_CMD_ONENAND)
Stefan Roese68d7d652009-03-19 13:30:36 +010089#include <linux/mtd/onenand.h>
90#include <onenand_uboot.h>
91#endif
92
Joe Hershbergera7eb1d62013-04-08 10:32:50 +000093DECLARE_GLOBAL_DATA_PTR;
94
Stefan Roese68d7d652009-03-19 13:30:36 +010095/* special size referring to all the remaining space in a partition */
Paul Burton39ac3442013-09-04 15:16:57 +010096#define SIZE_REMAINING (~0llu)
Stefan Roese68d7d652009-03-19 13:30:36 +010097
98/* special offset value, it is used when not provided by user
99 *
100 * this value is used temporarily during parsing, later such offests
101 * are recalculated */
Paul Burton39ac3442013-09-04 15:16:57 +0100102#define OFFSET_NOT_SPECIFIED (~0llu)
Stefan Roese68d7d652009-03-19 13:30:36 +0100103
104/* minimum partition size */
105#define MIN_PART_SIZE 4096
106
107/* this flag needs to be set in part_info struct mask_flags
108 * field for read-only partitions */
109#define MTD_WRITEABLE_CMD 1
110
111/* default values for mtdids and mtdparts variables */
112#if defined(MTDIDS_DEFAULT)
113static const char *const mtdids_default = MTDIDS_DEFAULT;
114#else
Stefan Roese68d7d652009-03-19 13:30:36 +0100115static const char *const mtdids_default = NULL;
116#endif
117
118#if defined(MTDPARTS_DEFAULT)
119static const char *const mtdparts_default = MTDPARTS_DEFAULT;
120#else
Stefan Roese68d7d652009-03-19 13:30:36 +0100121static const char *const mtdparts_default = NULL;
122#endif
123
124/* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
125#define MTDIDS_MAXLEN 128
126#define MTDPARTS_MAXLEN 512
127#define PARTITION_MAXLEN 16
128static char last_ids[MTDIDS_MAXLEN];
129static char last_parts[MTDPARTS_MAXLEN];
130static char last_partition[PARTITION_MAXLEN];
131
132/* low level jffs2 cache cleaning routine */
133extern void jffs2_free_cache(struct part_info *part);
134
135/* mtdids mapping list, filled by parse_ids() */
Kim Phillips088f1b12012-10-29 13:34:31 +0000136static struct list_head mtdids;
Stefan Roese68d7d652009-03-19 13:30:36 +0100137
138/* device/partition list, parse_cmdline() parses into here */
Kim Phillips088f1b12012-10-29 13:34:31 +0000139static struct list_head devices;
Stefan Roese68d7d652009-03-19 13:30:36 +0100140
141/* current active device and partition number */
Stefan Roese76b58832009-05-16 12:04:22 +0200142struct mtd_device *current_mtd_dev = NULL;
143u8 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100144
145static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
146
147/* command line only routines */
148static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
149static int device_del(struct mtd_device *dev);
150
151/**
152 * Parses a string into a number. The number stored at ptr is
153 * potentially suffixed with K (for kilobytes, or 1024 bytes),
154 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
155 * 1073741824). If the number is suffixed with K, M, or G, then
156 * the return value is the number multiplied by one kilobyte, one
157 * megabyte, or one gigabyte, respectively.
158 *
159 * @param ptr where parse begins
160 * @param retptr output pointer to next char after parse completes (output)
161 * @return resulting unsigned int
162 */
Paul Burton39ac3442013-09-04 15:16:57 +0100163static u64 memsize_parse (const char *const ptr, const char **retptr)
Stefan Roese68d7d652009-03-19 13:30:36 +0100164{
Paul Burton39ac3442013-09-04 15:16:57 +0100165 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
Stefan Roese68d7d652009-03-19 13:30:36 +0100166
167 switch (**retptr) {
168 case 'G':
169 case 'g':
170 ret <<= 10;
171 case 'M':
172 case 'm':
173 ret <<= 10;
174 case 'K':
175 case 'k':
176 ret <<= 10;
177 (*retptr)++;
178 default:
179 break;
180 }
181
182 return ret;
183}
184
185/**
186 * Format string describing supplied size. This routine does the opposite job
187 * to memsize_parse(). Size in bytes is converted to string and if possible
188 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
189 *
190 * Note, that this routine does not check for buffer overflow, it's the caller
191 * who must assure enough space.
192 *
193 * @param buf output buffer
194 * @param size size to be converted to string
195 */
Paul Burton39ac3442013-09-04 15:16:57 +0100196static void memsize_format(char *buf, u64 size)
Stefan Roese68d7d652009-03-19 13:30:36 +0100197{
198#define SIZE_GB ((u32)1024*1024*1024)
199#define SIZE_MB ((u32)1024*1024)
200#define SIZE_KB ((u32)1024)
201
202 if ((size % SIZE_GB) == 0)
Paul Burton39ac3442013-09-04 15:16:57 +0100203 sprintf(buf, "%llug", size/SIZE_GB);
Stefan Roese68d7d652009-03-19 13:30:36 +0100204 else if ((size % SIZE_MB) == 0)
Paul Burton39ac3442013-09-04 15:16:57 +0100205 sprintf(buf, "%llum", size/SIZE_MB);
Stefan Roese68d7d652009-03-19 13:30:36 +0100206 else if (size % SIZE_KB == 0)
Paul Burton39ac3442013-09-04 15:16:57 +0100207 sprintf(buf, "%lluk", size/SIZE_KB);
Stefan Roese68d7d652009-03-19 13:30:36 +0100208 else
Paul Burton39ac3442013-09-04 15:16:57 +0100209 sprintf(buf, "%llu", size);
Stefan Roese68d7d652009-03-19 13:30:36 +0100210}
211
212/**
213 * This routine does global indexing of all partitions. Resulting index for
214 * current partition is saved in 'mtddevnum'. Current partition name in
215 * 'mtddevname'.
216 */
217static void index_partitions(void)
218{
Stefan Roese68d7d652009-03-19 13:30:36 +0100219 u16 mtddevnum;
220 struct part_info *part;
221 struct list_head *dentry;
222 struct mtd_device *dev;
223
Wolfgang Denke1d29502010-04-28 10:58:10 +0200224 debug("--- index partitions ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100225
Stefan Roese76b58832009-05-16 12:04:22 +0200226 if (current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100227 mtddevnum = 0;
228 list_for_each(dentry, &devices) {
229 dev = list_entry(dentry, struct mtd_device, link);
Stefan Roese76b58832009-05-16 12:04:22 +0200230 if (dev == current_mtd_dev) {
231 mtddevnum += current_mtd_partnum;
Simon Glass41ef3722013-02-24 17:33:22 +0000232 setenv_ulong("mtddevnum", mtddevnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100233 break;
234 }
235 mtddevnum += dev->num_parts;
236 }
237
Stefan Roese76b58832009-05-16 12:04:22 +0200238 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100239 setenv("mtddevname", part->name);
240
Wolfgang Denke1d29502010-04-28 10:58:10 +0200241 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100242 } else {
243 setenv("mtddevnum", NULL);
244 setenv("mtddevname", NULL);
245
Wolfgang Denke1d29502010-04-28 10:58:10 +0200246 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100247 }
248}
249
250/**
251 * Save current device and partition in environment variable 'partition'.
252 */
253static void current_save(void)
254{
255 char buf[16];
256
Wolfgang Denke1d29502010-04-28 10:58:10 +0200257 debug("--- current_save ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100258
Stefan Roese76b58832009-05-16 12:04:22 +0200259 if (current_mtd_dev) {
260 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
261 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100262
263 setenv("partition", buf);
264 strncpy(last_partition, buf, 16);
265
Wolfgang Denke1d29502010-04-28 10:58:10 +0200266 debug("=> partition %s\n", buf);
Stefan Roese68d7d652009-03-19 13:30:36 +0100267 } else {
268 setenv("partition", NULL);
269 last_partition[0] = '\0';
270
Wolfgang Denke1d29502010-04-28 10:58:10 +0200271 debug("=> partition NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100272 }
273 index_partitions();
274}
275
Ben Gardiner0a026d32010-08-31 17:48:00 -0400276
277/**
278 * Produce a mtd_info given a type and num.
279 *
280 * @param type mtd type
281 * @param num mtd number
282 * @param mtd a pointer to an mtd_info instance (output)
283 * @return 0 if device is valid, 1 otherwise
284 */
285static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
286{
287 char mtd_dev[16];
288
289 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
290 *mtd = get_mtd_device_nm(mtd_dev);
291 if (IS_ERR(*mtd)) {
292 printf("Device %s not found!\n", mtd_dev);
293 return 1;
294 }
Heiko Schocher1668d642014-07-14 09:17:11 +0200295 put_mtd_device(*mtd);
Ben Gardiner0a026d32010-08-31 17:48:00 -0400296
297 return 0;
298}
299
Stefan Roese68d7d652009-03-19 13:30:36 +0100300/**
Stefan Roese864aa032009-05-12 14:31:56 +0200301 * Performs sanity check for supplied flash partition.
302 * Table of existing MTD flash devices is searched and partition device
Stefan Roese68d7d652009-03-19 13:30:36 +0100303 * is located. Alignment with the granularity of nand erasesize is verified.
304 *
305 * @param id of the parent device
306 * @param part partition to validate
307 * @return 0 if partition is valid, 1 otherwise
308 */
Stefan Roese864aa032009-05-12 14:31:56 +0200309static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
Stefan Roese68d7d652009-03-19 13:30:36 +0100310{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400311 struct mtd_info *mtd = NULL;
Stefan Roese864aa032009-05-12 14:31:56 +0200312 int i, j;
313 ulong start;
Paul Burton39ac3442013-09-04 15:16:57 +0100314 u64 offset, size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100315
Ben Gardiner0a026d32010-08-31 17:48:00 -0400316 if (get_mtd_info(id->type, id->num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200317 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100318
319 part->sector_size = mtd->erasesize;
320
Stefan Roese864aa032009-05-12 14:31:56 +0200321 if (!mtd->numeraseregions) {
322 /*
323 * Only one eraseregion (NAND, OneNAND or uniform NOR),
324 * checking for alignment is easy here
325 */
Paul Burton39ac3442013-09-04 15:16:57 +0100326 offset = part->offset;
327 if (do_div(offset, mtd->erasesize)) {
Stefan Roese864aa032009-05-12 14:31:56 +0200328 printf("%s%d: partition (%s) start offset"
329 "alignment incorrect\n",
330 MTD_DEV_TYPE(id->type), id->num, part->name);
331 return 1;
332 }
Stefan Roese68d7d652009-03-19 13:30:36 +0100333
Paul Burton39ac3442013-09-04 15:16:57 +0100334 size = part->size;
335 if (do_div(size, mtd->erasesize)) {
Stefan Roese864aa032009-05-12 14:31:56 +0200336 printf("%s%d: partition (%s) size alignment incorrect\n",
337 MTD_DEV_TYPE(id->type), id->num, part->name);
338 return 1;
339 }
340 } else {
341 /*
342 * Multiple eraseregions (non-uniform NOR),
343 * checking for alignment is more complex here
344 */
345
346 /* Check start alignment */
347 for (i = 0; i < mtd->numeraseregions; i++) {
348 start = mtd->eraseregions[i].offset;
349 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
350 if (part->offset == start)
351 goto start_ok;
352 start += mtd->eraseregions[i].erasesize;
353 }
354 }
355
356 printf("%s%d: partition (%s) start offset alignment incorrect\n",
357 MTD_DEV_TYPE(id->type), id->num, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100358 return 1;
Stefan Roese864aa032009-05-12 14:31:56 +0200359
360 start_ok:
361
362 /* Check end/size alignment */
363 for (i = 0; i < mtd->numeraseregions; i++) {
364 start = mtd->eraseregions[i].offset;
365 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
366 if ((part->offset + part->size) == start)
367 goto end_ok;
368 start += mtd->eraseregions[i].erasesize;
369 }
370 }
371 /* Check last sector alignment */
372 if ((part->offset + part->size) == start)
373 goto end_ok;
374
375 printf("%s%d: partition (%s) size alignment incorrect\n",
376 MTD_DEV_TYPE(id->type), id->num, part->name);
377 return 1;
378
379 end_ok:
380 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100381 }
382
383 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100384}
385
386
387/**
Otavio Salvadorf5019912013-10-03 08:04:38 -0300388 * Performs sanity check for supplied partition. Offset and size are
389 * verified to be within valid range. Partition type is checked and
390 * part_validate_eraseblock() is called with the argument of part.
Stefan Roese68d7d652009-03-19 13:30:36 +0100391 *
392 * @param id of the parent device
393 * @param part partition to validate
394 * @return 0 if partition is valid, 1 otherwise
395 */
396static int part_validate(struct mtdids *id, struct part_info *part)
397{
398 if (part->size == SIZE_REMAINING)
399 part->size = id->size - part->offset;
400
401 if (part->offset > id->size) {
Paul Burton39ac3442013-09-04 15:16:57 +0100402 printf("%s: offset %08llx beyond flash size %08llx\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100403 id->mtd_id, part->offset, id->size);
404 return 1;
405 }
406
407 if ((part->offset + part->size) <= part->offset) {
408 printf("%s%d: partition (%s) size too big\n",
409 MTD_DEV_TYPE(id->type), id->num, part->name);
410 return 1;
411 }
412
413 if (part->offset + part->size > id->size) {
414 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
415 return 1;
416 }
417
Stefan Roese864aa032009-05-12 14:31:56 +0200418 /*
419 * Now we need to check if the partition starts and ends on
420 * sector (eraseblock) regions
421 */
422 return part_validate_eraseblock(id, part);
Stefan Roese68d7d652009-03-19 13:30:36 +0100423}
424
425/**
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400426 * Delete selected partition from the partition list of the specified device.
Stefan Roese68d7d652009-03-19 13:30:36 +0100427 *
428 * @param dev device to delete partition from
429 * @param part partition to delete
430 * @return 0 on success, 1 otherwise
431 */
432static int part_del(struct mtd_device *dev, struct part_info *part)
433{
434 u8 current_save_needed = 0;
435
436 /* if there is only one partition, remove whole device */
437 if (dev->num_parts == 1)
438 return device_del(dev);
439
440 /* otherwise just delete this partition */
441
Stefan Roese76b58832009-05-16 12:04:22 +0200442 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100443 /* we are modyfing partitions for the current device,
444 * update current */
445 struct part_info *curr_pi;
Stefan Roese76b58832009-05-16 12:04:22 +0200446 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100447
448 if (curr_pi) {
449 if (curr_pi == part) {
450 printf("current partition deleted, resetting current to 0\n");
Stefan Roese76b58832009-05-16 12:04:22 +0200451 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100452 } else if (part->offset <= curr_pi->offset) {
Stefan Roese76b58832009-05-16 12:04:22 +0200453 current_mtd_partnum--;
Stefan Roese68d7d652009-03-19 13:30:36 +0100454 }
455 current_save_needed = 1;
456 }
457 }
458
Stefan Roese68d7d652009-03-19 13:30:36 +0100459 list_del(&part->link);
460 free(part);
461 dev->num_parts--;
462
463 if (current_save_needed > 0)
464 current_save();
465 else
466 index_partitions();
467
468 return 0;
469}
470
471/**
472 * Delete all partitions from parts head list, free memory.
473 *
474 * @param head list of partitions to delete
475 */
476static void part_delall(struct list_head *head)
477{
478 struct list_head *entry, *n;
479 struct part_info *part_tmp;
480
481 /* clean tmp_list and free allocated memory */
482 list_for_each_safe(entry, n, head) {
483 part_tmp = list_entry(entry, struct part_info, link);
484
Stefan Roese68d7d652009-03-19 13:30:36 +0100485 list_del(entry);
486 free(part_tmp);
487 }
488}
489
490/**
491 * Add new partition to the supplied partition list. Make sure partitions are
492 * sorted by offset in ascending order.
493 *
494 * @param head list this partition is to be added to
495 * @param new partition to be added
496 */
497static int part_sort_add(struct mtd_device *dev, struct part_info *part)
498{
499 struct list_head *entry;
500 struct part_info *new_pi, *curr_pi;
501
502 /* link partition to parrent dev */
503 part->dev = dev;
504
505 if (list_empty(&dev->parts)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +0200506 debug("part_sort_add: list empty\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100507 list_add(&part->link, &dev->parts);
508 dev->num_parts++;
509 index_partitions();
510 return 0;
511 }
512
513 new_pi = list_entry(&part->link, struct part_info, link);
514
515 /* get current partition info if we are updating current device */
516 curr_pi = NULL;
Stefan Roese76b58832009-05-16 12:04:22 +0200517 if (dev == current_mtd_dev)
518 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100519
520 list_for_each(entry, &dev->parts) {
521 struct part_info *pi;
522
523 pi = list_entry(entry, struct part_info, link);
524
525 /* be compliant with kernel cmdline, allow only one partition at offset zero */
526 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
527 printf("cannot add second partition at offset 0\n");
528 return 1;
529 }
530
531 if (new_pi->offset <= pi->offset) {
532 list_add_tail(&part->link, entry);
533 dev->num_parts++;
534
535 if (curr_pi && (pi->offset <= curr_pi->offset)) {
536 /* we are modyfing partitions for the current
537 * device, update current */
Stefan Roese76b58832009-05-16 12:04:22 +0200538 current_mtd_partnum++;
Stefan Roese68d7d652009-03-19 13:30:36 +0100539 current_save();
540 } else {
541 index_partitions();
542 }
543 return 0;
544 }
545 }
546
547 list_add_tail(&part->link, &dev->parts);
548 dev->num_parts++;
549 index_partitions();
550 return 0;
551}
552
553/**
554 * Add provided partition to the partition list of a given device.
555 *
556 * @param dev device to which partition is added
557 * @param part partition to be added
558 * @return 0 on success, 1 otherwise
559 */
560static int part_add(struct mtd_device *dev, struct part_info *part)
561{
562 /* verify alignment and size */
563 if (part_validate(dev->id, part) != 0)
564 return 1;
565
566 /* partition is ok, add it to the list */
567 if (part_sort_add(dev, part) != 0)
568 return 1;
569
570 return 0;
571}
572
573/**
574 * Parse one partition definition, allocate memory and return pointer to this
575 * location in retpart.
576 *
577 * @param partdef pointer to the partition definition string i.e. <part-def>
578 * @param ret output pointer to next char after parse completes (output)
579 * @param retpart pointer to the allocated partition (output)
580 * @return 0 on success, 1 otherwise
581 */
582static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
583{
584 struct part_info *part;
Paul Burton39ac3442013-09-04 15:16:57 +0100585 u64 size;
586 u64 offset;
Stefan Roese68d7d652009-03-19 13:30:36 +0100587 const char *name;
588 int name_len;
589 unsigned int mask_flags;
590 const char *p;
591
592 p = partdef;
593 *retpart = NULL;
594 *ret = NULL;
595
596 /* fetch the partition size */
597 if (*p == '-') {
598 /* assign all remaining space to this partition */
Wolfgang Denke1d29502010-04-28 10:58:10 +0200599 debug("'-': remaining size assigned\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100600 size = SIZE_REMAINING;
601 p++;
602 } else {
603 size = memsize_parse(p, &p);
604 if (size < MIN_PART_SIZE) {
Paul Burton39ac3442013-09-04 15:16:57 +0100605 printf("partition size too small (%llx)\n", size);
Stefan Roese68d7d652009-03-19 13:30:36 +0100606 return 1;
607 }
608 }
609
610 /* check for offset */
611 offset = OFFSET_NOT_SPECIFIED;
612 if (*p == '@') {
613 p++;
614 offset = memsize_parse(p, &p);
615 }
616
617 /* now look for the name */
618 if (*p == '(') {
619 name = ++p;
620 if ((p = strchr(name, ')')) == NULL) {
621 printf("no closing ) found in partition name\n");
622 return 1;
623 }
624 name_len = p - name + 1;
625 if ((name_len - 1) == 0) {
626 printf("empty partition name\n");
627 return 1;
628 }
629 p++;
630 } else {
631 /* 0x00000000@0x00000000 */
632 name_len = 22;
633 name = NULL;
634 }
635
636 /* test for options */
637 mask_flags = 0;
638 if (strncmp(p, "ro", 2) == 0) {
639 mask_flags |= MTD_WRITEABLE_CMD;
640 p += 2;
641 }
642
643 /* check for next partition definition */
644 if (*p == ',') {
645 if (size == SIZE_REMAINING) {
646 *ret = NULL;
647 printf("no partitions allowed after a fill-up partition\n");
648 return 1;
649 }
650 *ret = ++p;
651 } else if ((*p == ';') || (*p == '\0')) {
652 *ret = p;
653 } else {
654 printf("unexpected character '%c' at the end of partition\n", *p);
655 *ret = NULL;
656 return 1;
657 }
658
659 /* allocate memory */
660 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
661 if (!part) {
662 printf("out of memory\n");
663 return 1;
664 }
665 memset(part, 0, sizeof(struct part_info) + name_len);
666 part->size = size;
667 part->offset = offset;
668 part->mask_flags = mask_flags;
669 part->name = (char *)(part + 1);
670
671 if (name) {
672 /* copy user provided name */
673 strncpy(part->name, name, name_len - 1);
674 part->auto_name = 0;
675 } else {
676 /* auto generated name in form of size@offset */
Paul Burton39ac3442013-09-04 15:16:57 +0100677 sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
Stefan Roese68d7d652009-03-19 13:30:36 +0100678 part->auto_name = 1;
679 }
680
681 part->name[name_len - 1] = '\0';
682 INIT_LIST_HEAD(&part->link);
683
Paul Burton39ac3442013-09-04 15:16:57 +0100684 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100685 part->name, part->size,
686 part->offset, part->mask_flags);
687
688 *retpart = part;
689 return 0;
690}
691
692/**
693 * Check device number to be within valid range for given device type.
694 *
Ben Gardiner0a026d32010-08-31 17:48:00 -0400695 * @param type mtd type
696 * @param num mtd number
697 * @param size a pointer to the size of the mtd device (output)
Stefan Roese68d7d652009-03-19 13:30:36 +0100698 * @return 0 if device is valid, 1 otherwise
699 */
Paul Burton39ac3442013-09-04 15:16:57 +0100700static int mtd_device_validate(u8 type, u8 num, u64 *size)
Stefan Roese68d7d652009-03-19 13:30:36 +0100701{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400702 struct mtd_info *mtd = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100703
Ben Gardiner0a026d32010-08-31 17:48:00 -0400704 if (get_mtd_info(type, num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200705 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100706
Stefan Roese864aa032009-05-12 14:31:56 +0200707 *size = mtd->size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100708
Stefan Roese864aa032009-05-12 14:31:56 +0200709 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100710}
711
712/**
713 * Delete all mtd devices from a supplied devices list, free memory allocated for
714 * each device and delete all device partitions.
715 *
716 * @return 0 on success, 1 otherwise
717 */
718static int device_delall(struct list_head *head)
719{
720 struct list_head *entry, *n;
721 struct mtd_device *dev_tmp;
722
723 /* clean devices list */
724 list_for_each_safe(entry, n, head) {
725 dev_tmp = list_entry(entry, struct mtd_device, link);
726 list_del(entry);
727 part_delall(&dev_tmp->parts);
728 free(dev_tmp);
729 }
730 INIT_LIST_HEAD(&devices);
731
732 return 0;
733}
734
735/**
736 * If provided device exists it's partitions are deleted, device is removed
737 * from device list and device memory is freed.
738 *
739 * @param dev device to be deleted
740 * @return 0 on success, 1 otherwise
741 */
742static int device_del(struct mtd_device *dev)
743{
744 part_delall(&dev->parts);
745 list_del(&dev->link);
746 free(dev);
747
Stefan Roese76b58832009-05-16 12:04:22 +0200748 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100749 /* we just deleted current device */
750 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200751 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100752 } else {
753 /* reset first partition from first dev from the
754 * devices list as current */
Stefan Roese76b58832009-05-16 12:04:22 +0200755 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
756 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100757 }
758 current_save();
759 return 0;
760 }
761
762 index_partitions();
763 return 0;
764}
765
766/**
767 * Search global device list and return pointer to the device of type and num
768 * specified.
769 *
770 * @param type device type
771 * @param num device number
772 * @return NULL if requested device does not exist
773 */
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100774struct mtd_device *device_find(u8 type, u8 num)
Stefan Roese68d7d652009-03-19 13:30:36 +0100775{
776 struct list_head *entry;
777 struct mtd_device *dev_tmp;
778
779 list_for_each(entry, &devices) {
780 dev_tmp = list_entry(entry, struct mtd_device, link);
781
782 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
783 return dev_tmp;
784 }
785
786 return NULL;
787}
788
789/**
790 * Add specified device to the global device list.
791 *
792 * @param dev device to be added
793 */
794static void device_add(struct mtd_device *dev)
795{
796 u8 current_save_needed = 0;
797
798 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200799 current_mtd_dev = dev;
800 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100801 current_save_needed = 1;
802 }
803
804 list_add_tail(&dev->link, &devices);
805
806 if (current_save_needed > 0)
807 current_save();
808 else
809 index_partitions();
810}
811
812/**
813 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
814 * return pointer to the device structure.
815 *
816 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
817 * @param ret output pointer to next char after parse completes (output)
818 * @param retdev pointer to the allocated device (output)
819 * @return 0 on success, 1 otherwise
820 */
821static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
822{
823 struct mtd_device *dev;
824 struct part_info *part;
825 struct mtdids *id;
826 const char *mtd_id;
827 unsigned int mtd_id_len;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200828 const char *p;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200829 const char *pend;
Stefan Roese68d7d652009-03-19 13:30:36 +0100830 LIST_HEAD(tmp_list);
831 struct list_head *entry, *n;
832 u16 num_parts;
Paul Burton39ac3442013-09-04 15:16:57 +0100833 u64 offset;
Stefan Roese68d7d652009-03-19 13:30:36 +0100834 int err = 1;
835
Wolfgang Denke1d29502010-04-28 10:58:10 +0200836 debug("===device_parse===\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100837
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200838 assert(retdev);
839 *retdev = NULL;
840
841 if (ret)
842 *ret = NULL;
843
Stefan Roese68d7d652009-03-19 13:30:36 +0100844 /* fetch <mtd-id> */
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200845 mtd_id = p = mtd_dev;
Stefan Roese68d7d652009-03-19 13:30:36 +0100846 if (!(p = strchr(mtd_id, ':'))) {
847 printf("no <mtd-id> identifier\n");
848 return 1;
849 }
850 mtd_id_len = p - mtd_id + 1;
851 p++;
852
853 /* verify if we have a valid device specified */
854 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
855 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
856 return 1;
857 }
858
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200859#ifdef DEBUG
860 pend = strchr(p, ';');
861#endif
Wolfgang Denke1d29502010-04-28 10:58:10 +0200862 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100863 id->type, MTD_DEV_TYPE(id->type),
864 id->num, id->mtd_id);
Vasili Galka5d69a5d2014-08-26 13:45:48 +0300865 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
Stefan Roese68d7d652009-03-19 13:30:36 +0100866
867
868 /* parse partitions */
869 num_parts = 0;
870
871 offset = 0;
872 if ((dev = device_find(id->type, id->num)) != NULL) {
873 /* if device already exists start at the end of the last partition */
874 part = list_entry(dev->parts.prev, struct part_info, link);
875 offset = part->offset + part->size;
876 }
877
878 while (p && (*p != '\0') && (*p != ';')) {
879 err = 1;
880 if ((part_parse(p, &p, &part) != 0) || (!part))
881 break;
882
883 /* calculate offset when not specified */
884 if (part->offset == OFFSET_NOT_SPECIFIED)
885 part->offset = offset;
886 else
887 offset = part->offset;
888
889 /* verify alignment and size */
890 if (part_validate(id, part) != 0)
891 break;
892
893 offset += part->size;
894
895 /* partition is ok, add it to the list */
896 list_add_tail(&part->link, &tmp_list);
897 num_parts++;
898 err = 0;
899 }
900 if (err == 1) {
901 part_delall(&tmp_list);
902 return 1;
903 }
904
905 if (num_parts == 0) {
906 printf("no partitions for device %s%d (%s)\n",
907 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
908 return 1;
909 }
910
Wolfgang Denke1d29502010-04-28 10:58:10 +0200911 debug("\ntotal partitions: %d\n", num_parts);
Stefan Roese68d7d652009-03-19 13:30:36 +0100912
913 /* check for next device presence */
914 if (p) {
915 if (*p == ';') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200916 if (ret)
917 *ret = ++p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100918 } else if (*p == '\0') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200919 if (ret)
920 *ret = p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100921 } else {
922 printf("unexpected character '%c' at the end of device\n", *p);
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200923 if (ret)
924 *ret = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100925 return 1;
926 }
927 }
928
929 /* allocate memory for mtd_device structure */
930 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
931 printf("out of memory\n");
932 return 1;
933 }
934 memset(dev, 0, sizeof(struct mtd_device));
935 dev->id = id;
936 dev->num_parts = 0; /* part_sort_add increments num_parts */
937 INIT_LIST_HEAD(&dev->parts);
938 INIT_LIST_HEAD(&dev->link);
939
940 /* move partitions from tmp_list to dev->parts */
941 list_for_each_safe(entry, n, &tmp_list) {
942 part = list_entry(entry, struct part_info, link);
943 list_del(entry);
944 if (part_sort_add(dev, part) != 0) {
945 device_del(dev);
946 return 1;
947 }
948 }
949
950 *retdev = dev;
951
Wolfgang Denke1d29502010-04-28 10:58:10 +0200952 debug("===\n\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100953 return 0;
954}
955
956/**
957 * Initialize global device list.
958 *
959 * @return 0 on success, 1 otherwise
960 */
961static int mtd_devices_init(void)
962{
963 last_parts[0] = '\0';
Stefan Roese76b58832009-05-16 12:04:22 +0200964 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100965 current_save();
966
967 return device_delall(&devices);
968}
969
970/*
971 * Search global mtdids list and find id of requested type and number.
972 *
973 * @return pointer to the id if it exists, NULL otherwise
974 */
975static struct mtdids* id_find(u8 type, u8 num)
976{
977 struct list_head *entry;
978 struct mtdids *id;
979
980 list_for_each(entry, &mtdids) {
981 id = list_entry(entry, struct mtdids, link);
982
983 if ((id->type == type) && (id->num == num))
984 return id;
985 }
986
987 return NULL;
988}
989
990/**
991 * Search global mtdids list and find id of a requested mtd_id.
992 *
993 * Note: first argument is not null terminated.
994 *
995 * @param mtd_id string containing requested mtd_id
996 * @param mtd_id_len length of supplied mtd_id
997 * @return pointer to the id if it exists, NULL otherwise
998 */
999static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1000{
1001 struct list_head *entry;
1002 struct mtdids *id;
1003
Wolfgang Denke1d29502010-04-28 10:58:10 +02001004 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001005 mtd_id_len, mtd_id, mtd_id_len);
1006
1007 list_for_each(entry, &mtdids) {
1008 id = list_entry(entry, struct mtdids, link);
1009
Vasili Galka5d69a5d2014-08-26 13:45:48 +03001010 debug("entry: '%s' (len = %zu)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001011 id->mtd_id, strlen(id->mtd_id));
1012
1013 if (mtd_id_len != strlen(id->mtd_id))
1014 continue;
1015 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1016 return id;
1017 }
1018
1019 return NULL;
1020}
1021
1022/**
1023 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1024 * return device type and number.
1025 *
1026 * @param id string describing device id
1027 * @param ret_id output pointer to next char after parse completes (output)
1028 * @param dev_type parsed device type (output)
1029 * @param dev_num parsed device number (output)
1030 * @return 0 on success, 1 otherwise
1031 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001032int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1033 u8 *dev_num)
Stefan Roese68d7d652009-03-19 13:30:36 +01001034{
1035 const char *p = id;
1036
1037 *dev_type = 0;
1038 if (strncmp(p, "nand", 4) == 0) {
1039 *dev_type = MTD_DEV_TYPE_NAND;
1040 p += 4;
1041 } else if (strncmp(p, "nor", 3) == 0) {
1042 *dev_type = MTD_DEV_TYPE_NOR;
1043 p += 3;
1044 } else if (strncmp(p, "onenand", 7) == 0) {
1045 *dev_type = MTD_DEV_TYPE_ONENAND;
1046 p += 7;
1047 } else {
1048 printf("incorrect device type in %s\n", id);
1049 return 1;
1050 }
1051
1052 if (!isdigit(*p)) {
1053 printf("incorrect device number in %s\n", id);
1054 return 1;
1055 }
1056
1057 *dev_num = simple_strtoul(p, (char **)&p, 0);
1058 if (ret_id)
1059 *ret_id = p;
1060 return 0;
1061}
1062
1063/**
1064 * Process all devices and generate corresponding mtdparts string describing
1065 * all partitions on all devices.
1066 *
1067 * @param buf output buffer holding generated mtdparts string (output)
1068 * @param buflen buffer size
1069 * @return 0 on success, 1 otherwise
1070 */
1071static int generate_mtdparts(char *buf, u32 buflen)
1072{
1073 struct list_head *pentry, *dentry;
1074 struct mtd_device *dev;
1075 struct part_info *part, *prev_part;
1076 char *p = buf;
1077 char tmpbuf[32];
Paul Burton39ac3442013-09-04 15:16:57 +01001078 u64 size, offset;
1079 u32 len, part_cnt;
Stefan Roese68d7d652009-03-19 13:30:36 +01001080 u32 maxlen = buflen - 1;
1081
Wolfgang Denke1d29502010-04-28 10:58:10 +02001082 debug("--- generate_mtdparts ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001083
1084 if (list_empty(&devices)) {
1085 buf[0] = '\0';
1086 return 0;
1087 }
1088
1089 sprintf(p, "mtdparts=");
1090 p += 9;
1091
1092 list_for_each(dentry, &devices) {
1093 dev = list_entry(dentry, struct mtd_device, link);
1094
1095 /* copy mtd_id */
1096 len = strlen(dev->id->mtd_id) + 1;
1097 if (len > maxlen)
1098 goto cleanup;
1099 memcpy(p, dev->id->mtd_id, len - 1);
1100 p += len - 1;
1101 *(p++) = ':';
1102 maxlen -= len;
1103
1104 /* format partitions */
1105 prev_part = NULL;
1106 part_cnt = 0;
1107 list_for_each(pentry, &dev->parts) {
1108 part = list_entry(pentry, struct part_info, link);
1109 size = part->size;
1110 offset = part->offset;
1111 part_cnt++;
1112
1113 /* partition size */
1114 memsize_format(tmpbuf, size);
1115 len = strlen(tmpbuf);
1116 if (len > maxlen)
1117 goto cleanup;
1118 memcpy(p, tmpbuf, len);
1119 p += len;
1120 maxlen -= len;
1121
1122
1123 /* add offset only when there is a gap between
1124 * partitions */
1125 if ((!prev_part && (offset != 0)) ||
1126 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1127
1128 memsize_format(tmpbuf, offset);
1129 len = strlen(tmpbuf) + 1;
1130 if (len > maxlen)
1131 goto cleanup;
1132 *(p++) = '@';
1133 memcpy(p, tmpbuf, len - 1);
1134 p += len - 1;
1135 maxlen -= len;
1136 }
1137
1138 /* copy name only if user supplied */
1139 if(!part->auto_name) {
1140 len = strlen(part->name) + 2;
1141 if (len > maxlen)
1142 goto cleanup;
1143
1144 *(p++) = '(';
1145 memcpy(p, part->name, len - 2);
1146 p += len - 2;
1147 *(p++) = ')';
1148 maxlen -= len;
1149 }
1150
1151 /* ro mask flag */
1152 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1153 len = 2;
1154 if (len > maxlen)
1155 goto cleanup;
1156 *(p++) = 'r';
1157 *(p++) = 'o';
1158 maxlen -= 2;
1159 }
1160
1161 /* print ',' separator if there are other partitions
1162 * following */
1163 if (dev->num_parts > part_cnt) {
1164 if (1 > maxlen)
1165 goto cleanup;
1166 *(p++) = ',';
1167 maxlen--;
1168 }
1169 prev_part = part;
1170 }
1171 /* print ';' separator if there are other devices following */
1172 if (dentry->next != &devices) {
1173 if (1 > maxlen)
1174 goto cleanup;
1175 *(p++) = ';';
1176 maxlen--;
1177 }
1178 }
1179
1180 /* we still have at least one char left, as we decremented maxlen at
1181 * the begining */
1182 *p = '\0';
1183
1184 return 0;
1185
1186cleanup:
1187 last_parts[0] = '\0';
1188 return 1;
1189}
1190
1191/**
1192 * Call generate_mtdparts to process all devices and generate corresponding
1193 * mtdparts string, save it in mtdparts environment variable.
1194 *
1195 * @param buf output buffer holding generated mtdparts string (output)
1196 * @param buflen buffer size
1197 * @return 0 on success, 1 otherwise
1198 */
1199static int generate_mtdparts_save(char *buf, u32 buflen)
1200{
1201 int ret;
1202
1203 ret = generate_mtdparts(buf, buflen);
1204
1205 if ((buf[0] != '\0') && (ret == 0))
1206 setenv("mtdparts", buf);
1207 else
1208 setenv("mtdparts", NULL);
1209
1210 return ret;
1211}
1212
Ben Gardiner04ac3802010-08-31 17:48:02 -04001213#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
Stefan Roese68d7d652009-03-19 13:30:36 +01001214/**
Ben Gardiner04ac3802010-08-31 17:48:02 -04001215 * Get the net size (w/o bad blocks) of the given partition.
1216 *
1217 * @param mtd the mtd info
1218 * @param part the partition
1219 * @return the calculated net size of this partition
Stefan Roese68d7d652009-03-19 13:30:36 +01001220 */
Ben Gardiner04ac3802010-08-31 17:48:02 -04001221static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1222{
Scott Wood36650ca2010-09-09 15:40:03 -05001223 uint64_t i, net_size = 0;
1224
Ben Gardiner04ac3802010-08-31 17:48:02 -04001225 if (!mtd->block_isbad)
1226 return part->size;
1227
Ben Gardiner04ac3802010-08-31 17:48:02 -04001228 for (i = 0; i < part->size; i += mtd->erasesize) {
1229 if (!mtd->block_isbad(mtd, part->offset + i))
1230 net_size += mtd->erasesize;
1231 }
Scott Wood36650ca2010-09-09 15:40:03 -05001232
Ben Gardiner04ac3802010-08-31 17:48:02 -04001233 return net_size;
1234}
1235#endif
1236
1237static void print_partition_table(void)
Stefan Roese68d7d652009-03-19 13:30:36 +01001238{
1239 struct list_head *dentry, *pentry;
1240 struct part_info *part;
1241 struct mtd_device *dev;
1242 int part_num;
1243
Stefan Roese68d7d652009-03-19 13:30:36 +01001244 list_for_each(dentry, &devices) {
1245 dev = list_entry(dentry, struct mtd_device, link);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001246 /* list partitions for given device */
1247 part_num = 0;
1248#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1249 struct mtd_info *mtd;
1250
1251 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1252 return;
1253
1254 printf("\ndevice %s%d <%s>, # parts = %d\n",
1255 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1256 dev->id->mtd_id, dev->num_parts);
1257 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1258
1259 list_for_each(pentry, &dev->parts) {
1260 u32 net_size;
1261 char *size_note;
1262
1263 part = list_entry(pentry, struct part_info, link);
1264 net_size = net_part_size(mtd, part);
1265 size_note = part->size == net_size ? " " : " (!)";
1266 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1267 part_num, part->name, part->size,
1268 net_size, size_note, part->offset,
1269 part->mask_flags);
1270#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001271 printf("\ndevice %s%d <%s>, # parts = %d\n",
1272 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1273 dev->id->mtd_id, dev->num_parts);
David Brownell08f077d2009-04-16 19:55:48 -07001274 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001275
Stefan Roese68d7d652009-03-19 13:30:36 +01001276 list_for_each(pentry, &dev->parts) {
1277 part = list_entry(pentry, struct part_info, link);
Paul Burton39ac3442013-09-04 15:16:57 +01001278 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001279 part_num, part->name, part->size,
1280 part->offset, part->mask_flags);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001281#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001282 part_num++;
1283 }
1284 }
Ben Gardiner04ac3802010-08-31 17:48:02 -04001285
Stefan Roese68d7d652009-03-19 13:30:36 +01001286 if (list_empty(&devices))
1287 printf("no partitions defined\n");
Ben Gardiner04ac3802010-08-31 17:48:02 -04001288}
1289
1290/**
1291 * Format and print out a partition list for each device from global device
1292 * list.
1293 */
1294static void list_partitions(void)
1295{
1296 struct part_info *part;
1297
1298 debug("\n---list_partitions---\n");
1299 print_partition_table();
Stefan Roese68d7d652009-03-19 13:30:36 +01001300
Stefan Roese76b58832009-05-16 12:04:22 +02001301 /* current_mtd_dev is not NULL only when we have non empty device list */
1302 if (current_mtd_dev) {
1303 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001304 if (part) {
Paul Burton39ac3442013-09-04 15:16:57 +01001305 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001306 MTD_DEV_TYPE(current_mtd_dev->id->type),
1307 current_mtd_dev->id->num, current_mtd_partnum,
Stefan Roese68d7d652009-03-19 13:30:36 +01001308 part->name, part->size, part->offset);
1309 } else {
1310 printf("could not get current partition info\n\n");
1311 }
1312 }
1313
1314 printf("\ndefaults:\n");
Wolfgang Denk36c91692009-05-17 16:01:54 +02001315 printf("mtdids : %s\n",
1316 mtdids_default ? mtdids_default : "none");
Anatolij Gustschina6934472010-02-24 00:29:44 +01001317 /*
1318 * Using printf() here results in printbuffer overflow
1319 * if default mtdparts string is greater than console
1320 * printbuffer. Use puts() to prevent system crashes.
1321 */
1322 puts("mtdparts: ");
1323 puts(mtdparts_default ? mtdparts_default : "none");
1324 puts("\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001325}
1326
1327/**
1328 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1329 * corresponding device and verify partition number.
1330 *
1331 * @param id string describing device and partition or partition name
1332 * @param dev pointer to the requested device (output)
1333 * @param part_num verified partition number (output)
1334 * @param part pointer to requested partition (output)
1335 * @return 0 on success, 1 otherwise
1336 */
1337int find_dev_and_part(const char *id, struct mtd_device **dev,
1338 u8 *part_num, struct part_info **part)
1339{
1340 struct list_head *dentry, *pentry;
1341 u8 type, dnum, pnum;
1342 const char *p;
1343
Wolfgang Denke1d29502010-04-28 10:58:10 +02001344 debug("--- find_dev_and_part ---\nid = %s\n", id);
Stefan Roese68d7d652009-03-19 13:30:36 +01001345
1346 list_for_each(dentry, &devices) {
1347 *part_num = 0;
1348 *dev = list_entry(dentry, struct mtd_device, link);
1349 list_for_each(pentry, &(*dev)->parts) {
1350 *part = list_entry(pentry, struct part_info, link);
1351 if (strcmp((*part)->name, id) == 0)
1352 return 0;
1353 (*part_num)++;
1354 }
1355 }
1356
1357 p = id;
1358 *dev = NULL;
1359 *part = NULL;
1360 *part_num = 0;
1361
1362 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1363 return 1;
1364
1365 if ((*p++ != ',') || (*p == '\0')) {
1366 printf("no partition number specified\n");
1367 return 1;
1368 }
1369 pnum = simple_strtoul(p, (char **)&p, 0);
1370 if (*p != '\0') {
1371 printf("unexpected trailing character '%c'\n", *p);
1372 return 1;
1373 }
1374
1375 if ((*dev = device_find(type, dnum)) == NULL) {
1376 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1377 return 1;
1378 }
1379
1380 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1381 printf("no such partition\n");
1382 *dev = NULL;
1383 return 1;
1384 }
1385
1386 *part_num = pnum;
1387
1388 return 0;
1389}
1390
1391/**
1392 * Find and delete partition. For partition id format see find_dev_and_part().
1393 *
1394 * @param id string describing device and partition
1395 * @return 0 on success, 1 otherwise
1396 */
1397static int delete_partition(const char *id)
1398{
1399 u8 pnum;
1400 struct mtd_device *dev;
1401 struct part_info *part;
1402
1403 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1404
Paul Burton39ac3442013-09-04 15:16:57 +01001405 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001406 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1407 part->name, part->size, part->offset);
1408
1409 if (part_del(dev, part) != 0)
1410 return 1;
1411
1412 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00001413 printf("generated mtdparts too long, resetting to null\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001414 return 1;
1415 }
1416 return 0;
1417 }
1418
1419 printf("partition %s not found\n", id);
1420 return 1;
1421}
1422
Ben Gardinerca75b202010-08-31 17:48:03 -04001423#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1424/**
1425 * Increase the size of the given partition so that it's net size is at least
1426 * as large as the size member and such that the next partition would start on a
1427 * good block if it were adjacent to this partition.
1428 *
1429 * @param mtd the mtd device
1430 * @param part the partition
1431 * @param next_offset pointer to the offset of the next partition after this
1432 * partition's size has been modified (output)
1433 */
1434static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1435 uint64_t *next_offset)
1436{
1437 uint64_t net_size, padding_size = 0;
1438 int truncated;
1439
1440 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1441 &truncated);
1442
1443 /*
1444 * Absorb bad blocks immediately following this
1445 * partition also into the partition, such that
1446 * the next partition starts with a good block.
1447 */
1448 if (!truncated) {
1449 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1450 mtd->erasesize, &padding_size, &truncated);
1451 if (truncated)
1452 padding_size = 0;
1453 else
1454 padding_size -= mtd->erasesize;
1455 }
1456
1457 if (truncated) {
1458 printf("truncated partition %s to %lld bytes\n", part->name,
1459 (uint64_t) net_size + padding_size);
1460 }
1461
1462 part->size = net_size + padding_size;
1463 *next_offset = part->offset + part->size;
1464}
1465
1466/**
1467 * Adjust all of the partition sizes, such that all partitions are at least
1468 * as big as their mtdparts environment variable sizes and they each start
1469 * on a good block.
1470 *
1471 * @return 0 on success, 1 otherwise
1472 */
1473static int spread_partitions(void)
1474{
1475 struct list_head *dentry, *pentry;
1476 struct mtd_device *dev;
1477 struct part_info *part;
1478 struct mtd_info *mtd;
1479 int part_num;
1480 uint64_t cur_offs;
1481
1482 list_for_each(dentry, &devices) {
1483 dev = list_entry(dentry, struct mtd_device, link);
1484
1485 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1486 return 1;
1487
1488 part_num = 0;
1489 cur_offs = 0;
1490 list_for_each(pentry, &dev->parts) {
1491 part = list_entry(pentry, struct part_info, link);
1492
1493 debug("spread_partitions: device = %s%d, partition %d ="
1494 " (%s) 0x%08x@0x%08x\n",
1495 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1496 part_num, part->name, part->size,
1497 part->offset);
1498
1499 if (cur_offs > part->offset)
1500 part->offset = cur_offs;
1501
1502 spread_partition(mtd, part, &cur_offs);
1503
1504 part_num++;
1505 }
1506 }
1507
1508 index_partitions();
1509
1510 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00001511 printf("generated mtdparts too long, resetting to null\n");
Ben Gardinerca75b202010-08-31 17:48:03 -04001512 return 1;
1513 }
1514 return 0;
1515}
1516#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1517
Stefan Roese68d7d652009-03-19 13:30:36 +01001518/**
1519 * Accept character string describing mtd partitions and call device_parse()
1520 * for each entry. Add created devices to the global devices list.
1521 *
1522 * @param mtdparts string specifing mtd partitions
1523 * @return 0 on success, 1 otherwise
1524 */
1525static int parse_mtdparts(const char *const mtdparts)
1526{
1527 const char *p = mtdparts;
1528 struct mtd_device *dev;
1529 int err = 1;
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001530 char tmp_parts[MTDPARTS_MAXLEN];
Stefan Roese68d7d652009-03-19 13:30:36 +01001531
Wolfgang Denke1d29502010-04-28 10:58:10 +02001532 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
Stefan Roese68d7d652009-03-19 13:30:36 +01001533
1534 /* delete all devices and partitions */
1535 if (mtd_devices_init() != 0) {
1536 printf("could not initialise device list\n");
1537 return err;
1538 }
1539
1540 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001541 if (gd->flags & GD_FLG_ENV_READY) {
1542 p = getenv("mtdparts");
1543 } else {
1544 p = tmp_parts;
1545 getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
1546 }
Stefan Roese68d7d652009-03-19 13:30:36 +01001547
1548 if (strncmp(p, "mtdparts=", 9) != 0) {
1549 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1550 return err;
1551 }
1552 p += 9;
1553
1554 while (p && (*p != '\0')) {
1555 err = 1;
1556 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1557 break;
1558
Wolfgang Denke1d29502010-04-28 10:58:10 +02001559 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01001560 dev->id->num, dev->id->mtd_id);
1561
1562 /* check if parsed device is already on the list */
1563 if (device_find(dev->id->type, dev->id->num) != NULL) {
1564 printf("device %s%d redefined, please correct mtdparts variable\n",
1565 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1566 break;
1567 }
1568
1569 list_add_tail(&dev->link, &devices);
1570 err = 0;
1571 }
1572 if (err == 1) {
1573 device_delall(&devices);
1574 return 1;
1575 }
1576
1577 return 0;
1578}
1579
1580/**
1581 * Parse provided string describing mtdids mapping (see file header for mtdids
1582 * variable format). Allocate memory for each entry and add all found entries
1583 * to the global mtdids list.
1584 *
1585 * @param ids mapping string
1586 * @return 0 on success, 1 otherwise
1587 */
1588static int parse_mtdids(const char *const ids)
1589{
1590 const char *p = ids;
1591 const char *mtd_id;
1592 int mtd_id_len;
1593 struct mtdids *id;
1594 struct list_head *entry, *n;
1595 struct mtdids *id_tmp;
1596 u8 type, num;
Paul Burton39ac3442013-09-04 15:16:57 +01001597 u64 size;
Stefan Roese68d7d652009-03-19 13:30:36 +01001598 int ret = 1;
1599
Wolfgang Denke1d29502010-04-28 10:58:10 +02001600 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
Stefan Roese68d7d652009-03-19 13:30:36 +01001601
1602 /* clean global mtdids list */
1603 list_for_each_safe(entry, n, &mtdids) {
1604 id_tmp = list_entry(entry, struct mtdids, link);
Wolfgang Denke1d29502010-04-28 10:58:10 +02001605 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
Stefan Roese68d7d652009-03-19 13:30:36 +01001606 list_del(entry);
1607 free(id_tmp);
1608 }
1609 last_ids[0] = '\0';
1610 INIT_LIST_HEAD(&mtdids);
1611
1612 while(p && (*p != '\0')) {
1613
1614 ret = 1;
1615 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1616 if (mtd_id_parse(p, &p, &type, &num) != 0)
1617 break;
1618
1619 if (*p != '=') {
1620 printf("mtdids: incorrect <dev-num>\n");
1621 break;
1622 }
1623 p++;
1624
1625 /* check if requested device exists */
1626 if (mtd_device_validate(type, num, &size) != 0)
1627 return 1;
1628
1629 /* locate <mtd-id> */
1630 mtd_id = p;
1631 if ((p = strchr(mtd_id, ',')) != NULL) {
1632 mtd_id_len = p - mtd_id + 1;
1633 p++;
1634 } else {
1635 mtd_id_len = strlen(mtd_id) + 1;
1636 }
1637 if (mtd_id_len == 0) {
1638 printf("mtdids: no <mtd-id> identifier\n");
1639 break;
1640 }
1641
1642 /* check if this id is already on the list */
1643 int double_entry = 0;
1644 list_for_each(entry, &mtdids) {
1645 id_tmp = list_entry(entry, struct mtdids, link);
1646 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1647 double_entry = 1;
1648 break;
1649 }
1650 }
1651 if (double_entry) {
1652 printf("device id %s%d redefined, please correct mtdids variable\n",
1653 MTD_DEV_TYPE(type), num);
1654 break;
1655 }
1656
1657 /* allocate mtdids structure */
1658 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1659 printf("out of memory\n");
1660 break;
1661 }
1662 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1663 id->num = num;
1664 id->type = type;
1665 id->size = size;
1666 id->mtd_id = (char *)(id + 1);
1667 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1668 id->mtd_id[mtd_id_len - 1] = '\0';
1669 INIT_LIST_HEAD(&id->link);
1670
Paul Burton39ac3442013-09-04 15:16:57 +01001671 debug("+ id %s%d\t%16lld bytes\t%s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001672 MTD_DEV_TYPE(id->type), id->num,
1673 id->size, id->mtd_id);
1674
1675 list_add_tail(&id->link, &mtdids);
1676 ret = 0;
1677 }
1678 if (ret == 1) {
1679 /* clean mtdids list and free allocated memory */
1680 list_for_each_safe(entry, n, &mtdids) {
1681 id_tmp = list_entry(entry, struct mtdids, link);
1682 list_del(entry);
1683 free(id_tmp);
1684 }
1685 return 1;
1686 }
1687
1688 return 0;
1689}
1690
1691/**
1692 * Parse and initialize global mtdids mapping and create global
1693 * device/partition list.
1694 *
1695 * @return 0 on success, 1 otherwise
1696 */
1697int mtdparts_init(void)
1698{
1699 static int initialized = 0;
1700 const char *ids, *parts;
1701 const char *current_partition;
1702 int ids_changed;
1703 char tmp_ep[PARTITION_MAXLEN];
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001704 char tmp_parts[MTDPARTS_MAXLEN];
Stefan Roese68d7d652009-03-19 13:30:36 +01001705
Wolfgang Denke1d29502010-04-28 10:58:10 +02001706 debug("\n---mtdparts_init---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001707 if (!initialized) {
1708 INIT_LIST_HEAD(&mtdids);
1709 INIT_LIST_HEAD(&devices);
1710 memset(last_ids, 0, MTDIDS_MAXLEN);
1711 memset(last_parts, 0, MTDPARTS_MAXLEN);
1712 memset(last_partition, 0, PARTITION_MAXLEN);
1713 initialized = 1;
1714 }
1715
1716 /* get variables */
1717 ids = getenv("mtdids");
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001718 /*
1719 * The mtdparts variable tends to be long. If we need to access it
1720 * before the env is relocated, then we need to use our own stack
1721 * buffer. gd->env_buf will be too small.
1722 */
1723 if (gd->flags & GD_FLG_ENV_READY) {
1724 parts = getenv("mtdparts");
1725 } else {
1726 parts = tmp_parts;
1727 getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
1728 }
Stefan Roese68d7d652009-03-19 13:30:36 +01001729 current_partition = getenv("partition");
1730
1731 /* save it for later parsing, cannot rely on current partition pointer
1732 * as 'partition' variable may be updated during init */
1733 tmp_ep[0] = '\0';
1734 if (current_partition)
1735 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1736
Wolfgang Denke1d29502010-04-28 10:58:10 +02001737 debug("last_ids : %s\n", last_ids);
1738 debug("env_ids : %s\n", ids);
1739 debug("last_parts: %s\n", last_parts);
1740 debug("env_parts : %s\n\n", parts);
Stefan Roese68d7d652009-03-19 13:30:36 +01001741
Wolfgang Denke1d29502010-04-28 10:58:10 +02001742 debug("last_partition : %s\n", last_partition);
1743 debug("env_partition : %s\n", current_partition);
Stefan Roese68d7d652009-03-19 13:30:36 +01001744
1745 /* if mtdids varible is empty try to use defaults */
1746 if (!ids) {
1747 if (mtdids_default) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001748 debug("mtdids variable not defined, using default\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001749 ids = mtdids_default;
1750 setenv("mtdids", (char *)ids);
1751 } else {
1752 printf("mtdids not defined, no default present\n");
1753 return 1;
1754 }
1755 }
1756 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1757 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1758 return 1;
1759 }
1760
1761 /* do no try to use defaults when mtdparts variable is not defined,
1762 * just check the length */
1763 if (!parts)
1764 printf("mtdparts variable not set, see 'help mtdparts'\n");
1765
1766 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1767 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1768 return 1;
1769 }
1770
1771 /* check if we have already parsed those mtdids */
1772 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1773 ids_changed = 0;
1774 } else {
1775 ids_changed = 1;
1776
1777 if (parse_mtdids(ids) != 0) {
1778 mtd_devices_init();
1779 return 1;
1780 }
1781
1782 /* ok it's good, save new ids */
1783 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1784 }
1785
1786 /* parse partitions if either mtdparts or mtdids were updated */
1787 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1788 if (parse_mtdparts(parts) != 0)
1789 return 1;
1790
1791 if (list_empty(&devices)) {
1792 printf("mtdparts_init: no valid partitions\n");
1793 return 1;
1794 }
1795
1796 /* ok it's good, save new parts */
1797 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1798
1799 /* reset first partition from first dev from the list as current */
Stefan Roese76b58832009-05-16 12:04:22 +02001800 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1801 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +01001802 current_save();
1803
Wolfgang Denke1d29502010-04-28 10:58:10 +02001804 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001805 MTD_DEV_TYPE(current_mtd_dev->id->type),
1806 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001807 }
1808
1809 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1810 if (!parts && (last_parts[0] != '\0'))
1811 return mtd_devices_init();
1812
1813 /* do not process current partition if mtdparts variable is null */
1814 if (!parts)
1815 return 0;
1816
1817 /* is current partition set in environment? if so, use it */
1818 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1819 struct part_info *p;
1820 struct mtd_device *cdev;
1821 u8 pnum;
1822
Wolfgang Denke1d29502010-04-28 10:58:10 +02001823 debug("--- getting current partition: %s\n", tmp_ep);
Stefan Roese68d7d652009-03-19 13:30:36 +01001824
1825 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
Stefan Roese76b58832009-05-16 12:04:22 +02001826 current_mtd_dev = cdev;
1827 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001828 current_save();
1829 }
1830 } else if (getenv("partition") == NULL) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001831 debug("no partition variable set, setting...\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001832 current_save();
1833 }
1834
1835 return 0;
1836}
1837
1838/**
1839 * Return pointer to the partition of a requested number from a requested
1840 * device.
1841 *
1842 * @param dev device that is to be searched for a partition
1843 * @param part_num requested partition number
1844 * @return pointer to the part_info, NULL otherwise
1845 */
1846static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1847{
1848 struct list_head *entry;
1849 struct part_info *part;
1850 int num;
1851
1852 if (!dev)
1853 return NULL;
1854
Wolfgang Denke1d29502010-04-28 10:58:10 +02001855 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001856 part_num, MTD_DEV_TYPE(dev->id->type),
1857 dev->id->num, dev->id->mtd_id);
1858
1859 if (part_num >= dev->num_parts) {
1860 printf("invalid partition number %d for device %s%d (%s)\n",
1861 part_num, MTD_DEV_TYPE(dev->id->type),
1862 dev->id->num, dev->id->mtd_id);
1863 return NULL;
1864 }
1865
1866 /* locate partition number, return it */
1867 num = 0;
1868 list_for_each(entry, &dev->parts) {
1869 part = list_entry(entry, struct part_info, link);
1870
1871 if (part_num == num++) {
1872 return part;
1873 }
1874 }
1875
1876 return NULL;
1877}
1878
1879/***************************************************/
1880/* U-boot commands */
1881/***************************************************/
1882/* command line only */
1883/**
1884 * Routine implementing u-boot chpart command. Sets new current partition based
1885 * on the user supplied partition id. For partition id format see find_dev_and_part().
1886 *
1887 * @param cmdtp command internal data
1888 * @param flag command flag
1889 * @param argc number of arguments supplied to the command
1890 * @param argv arguments list
1891 * @return 0 on success, 1 otherwise
1892 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001893static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001894{
1895/* command line only */
1896 struct mtd_device *dev;
1897 struct part_info *part;
1898 u8 pnum;
1899
1900 if (mtdparts_init() !=0)
1901 return 1;
1902
1903 if (argc < 2) {
1904 printf("no partition id specified\n");
1905 return 1;
1906 }
1907
1908 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1909 return 1;
1910
Stefan Roese76b58832009-05-16 12:04:22 +02001911 current_mtd_dev = dev;
1912 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001913 current_save();
1914
1915 printf("partition changed to %s%d,%d\n",
1916 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1917
1918 return 0;
1919}
1920
1921/**
1922 * Routine implementing u-boot mtdparts command. Initialize/update default global
1923 * partition list and process user partition request (list, add, del).
1924 *
1925 * @param cmdtp command internal data
1926 * @param flag command flag
1927 * @param argc number of arguments supplied to the command
1928 * @param argv arguments list
1929 * @return 0 on success, 1 otherwise
1930 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001931static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1932 char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001933{
1934 if (argc == 2) {
1935 if (strcmp(argv[1], "default") == 0) {
1936 setenv("mtdids", (char *)mtdids_default);
1937 setenv("mtdparts", (char *)mtdparts_default);
1938 setenv("partition", NULL);
1939
1940 mtdparts_init();
1941 return 0;
1942 } else if (strcmp(argv[1], "delall") == 0) {
1943 /* this may be the first run, initialize lists if needed */
1944 mtdparts_init();
1945
1946 setenv("mtdparts", NULL);
1947
1948 /* mtd_devices_init() calls current_save() */
1949 return mtd_devices_init();
1950 }
1951 }
1952
1953 /* make sure we are in sync with env variables */
1954 if (mtdparts_init() != 0)
1955 return 1;
1956
1957 if (argc == 1) {
1958 list_partitions();
1959 return 0;
1960 }
1961
1962 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
Ben Gardiner59a50d22010-08-31 17:48:04 -04001963 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
Stefan Roese68d7d652009-03-19 13:30:36 +01001964#define PART_ADD_DESC_MAXLEN 64
1965 char tmpbuf[PART_ADD_DESC_MAXLEN];
Ben Gardiner59a50d22010-08-31 17:48:04 -04001966#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1967 struct mtd_info *mtd;
1968 uint64_t next_offset;
1969#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01001970 u8 type, num, len;
1971 struct mtd_device *dev;
1972 struct mtd_device *dev_tmp;
1973 struct mtdids *id;
1974 struct part_info *p;
1975
1976 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1977 return 1;
1978
1979 if ((id = id_find(type, num)) == NULL) {
1980 printf("no such device %s defined in mtdids variable\n", argv[2]);
1981 return 1;
1982 }
1983
1984 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1985 len += strlen(argv[3]); /* size@offset */
1986 len += strlen(argv[4]) + 2; /* '(' name ')' */
1987 if (argv[5] && (strlen(argv[5]) == 2))
1988 len += 2; /* 'ro' */
1989
1990 if (len >= PART_ADD_DESC_MAXLEN) {
1991 printf("too long partition description\n");
1992 return 1;
1993 }
1994 sprintf(tmpbuf, "%s:%s(%s)%s",
1995 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
Wolfgang Denke1d29502010-04-28 10:58:10 +02001996 debug("add tmpbuf: %s\n", tmpbuf);
Stefan Roese68d7d652009-03-19 13:30:36 +01001997
1998 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
1999 return 1;
2000
Wolfgang Denke1d29502010-04-28 10:58:10 +02002001 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01002002 dev->id->num, dev->id->mtd_id);
2003
Ben Gardiner59a50d22010-08-31 17:48:04 -04002004 p = list_entry(dev->parts.next, struct part_info, link);
2005
2006#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2007 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2008 return 1;
2009
2010 if (!strcmp(&argv[1][3], ".spread")) {
2011 spread_partition(mtd, p, &next_offset);
2012 debug("increased %s to %d bytes\n", p->name, p->size);
2013 }
2014#endif
2015
2016 dev_tmp = device_find(dev->id->type, dev->id->num);
2017 if (dev_tmp == NULL) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002018 device_add(dev);
Ben Gardiner59a50d22010-08-31 17:48:04 -04002019 } else if (part_add(dev_tmp, p) != 0) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002020 /* merge new partition with existing ones*/
Ben Gardiner59a50d22010-08-31 17:48:04 -04002021 device_del(dev);
2022 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01002023 }
2024
2025 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00002026 printf("generated mtdparts too long, resetting to null\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01002027 return 1;
2028 }
2029
2030 return 0;
2031 }
2032
2033 /* mtdparts del part-id */
2034 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02002035 debug("del: part-id = %s\n", argv[2]);
Stefan Roese68d7d652009-03-19 13:30:36 +01002036
2037 return delete_partition(argv[2]);
2038 }
2039
Ben Gardinerca75b202010-08-31 17:48:03 -04002040#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2041 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2042 return spread_partitions();
2043#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2044
Simon Glass4c12eeb2011-12-10 08:44:01 +00002045 return CMD_RET_USAGE;
Stefan Roese68d7d652009-03-19 13:30:36 +01002046}
2047
2048/***************************************************/
2049U_BOOT_CMD(
2050 chpart, 2, 0, do_chpart,
2051 "change active partition",
2052 "part-id\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +02002053 " - change active partition (e.g. part-id = nand0,1)"
Stefan Roese68d7d652009-03-19 13:30:36 +01002054);
2055
Kim Phillips088f1b12012-10-29 13:34:31 +00002056#ifdef CONFIG_SYS_LONGHELP
2057static char mtdparts_help_text[] =
Stefan Roese68d7d652009-03-19 13:30:36 +01002058 "\n"
2059 " - list partition table\n"
2060 "mtdparts delall\n"
2061 " - delete all partitions\n"
2062 "mtdparts del part-id\n"
2063 " - delete partition (e.g. part-id = nand0,1)\n"
2064 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2065 " - add partition\n"
Ben Gardiner59a50d22010-08-31 17:48:04 -04002066#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2067 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2068 " - add partition, padding size by skipping bad blocks\n"
2069#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01002070 "mtdparts default\n"
Ben Gardinerca75b202010-08-31 17:48:03 -04002071 " - reset partition table to defaults\n"
2072#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2073 "mtdparts spread\n"
2074 " - adjust the sizes of the partitions so they are\n"
2075 " at least as big as the mtdparts variable specifies\n"
2076 " and they each start on a good block\n\n"
2077#else
2078 "\n"
2079#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
Stefan Roese68d7d652009-03-19 13:30:36 +01002080 "-----\n\n"
2081 "this command uses three environment variables:\n\n"
2082 "'partition' - keeps current partition identifier\n\n"
2083 "partition := <part-id>\n"
2084 "<part-id> := <dev-id>,part_num\n\n"
2085 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2086 "mtdids=<idmap>[,<idmap>,...]\n\n"
2087 "<idmap> := <dev-id>=<mtd-id>\n"
2088 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2089 "<dev-num> := mtd device number, 0...\n"
2090 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2091 "'mtdparts' - partition list\n\n"
2092 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2093 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2094 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2095 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2096 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2097 "<offset> := partition start offset within the device\n"
2098 "<name> := '(' NAME ')'\n"
Kim Phillips088f1b12012-10-29 13:34:31 +00002099 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2100#endif
2101
2102U_BOOT_CMD(
2103 mtdparts, 6, 0, do_mtdparts,
2104 "define flash/nand partitions", mtdparts_help_text
Stefan Roese68d7d652009-03-19 13:30:36 +01002105);
2106/***************************************************/