blob: 112bf1f3e3cd51e5a30d8f941b88d20ee0fae031 [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 */
Ladislav Michlaf324432016-07-12 20:28:26 +0200112#if !defined(MTDIDS_DEFAULT)
Maxime Ripard0269dfa2017-02-27 18:22:04 +0100113#ifdef CONFIG_MTDIDS_DEFAULT
114#define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
115#else
Ladislav Michlaf324432016-07-12 20:28:26 +0200116#define MTDIDS_DEFAULT NULL
Stefan Roese68d7d652009-03-19 13:30:36 +0100117#endif
Maxime Ripard0269dfa2017-02-27 18:22:04 +0100118#endif
Ladislav Michlaf324432016-07-12 20:28:26 +0200119#if !defined(MTDPARTS_DEFAULT)
Maxime Ripard0269dfa2017-02-27 18:22:04 +0100120#ifdef CONFIG_MTDPARTS_DEFAULT
121#define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
122#else
Ladislav Michlaf324432016-07-12 20:28:26 +0200123#define MTDPARTS_DEFAULT NULL
Stefan Roese68d7d652009-03-19 13:30:36 +0100124#endif
Maxime Ripard0269dfa2017-02-27 18:22:04 +0100125#endif
Ladislav Michlaf324432016-07-12 20:28:26 +0200126#if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
127extern void board_mtdparts_default(const char **mtdids, const char **mtdparts);
128#endif
129static const char *mtdids_default = MTDIDS_DEFAULT;
130static const char *mtdparts_default = MTDPARTS_DEFAULT;
Stefan Roese68d7d652009-03-19 13:30:36 +0100131
132/* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
133#define MTDIDS_MAXLEN 128
134#define MTDPARTS_MAXLEN 512
135#define PARTITION_MAXLEN 16
136static char last_ids[MTDIDS_MAXLEN];
137static char last_parts[MTDPARTS_MAXLEN];
138static char last_partition[PARTITION_MAXLEN];
139
140/* low level jffs2 cache cleaning routine */
141extern void jffs2_free_cache(struct part_info *part);
142
143/* mtdids mapping list, filled by parse_ids() */
Kim Phillips088f1b12012-10-29 13:34:31 +0000144static struct list_head mtdids;
Stefan Roese68d7d652009-03-19 13:30:36 +0100145
146/* device/partition list, parse_cmdline() parses into here */
Kim Phillips088f1b12012-10-29 13:34:31 +0000147static struct list_head devices;
Stefan Roese68d7d652009-03-19 13:30:36 +0100148
149/* current active device and partition number */
Stefan Roese76b58832009-05-16 12:04:22 +0200150struct mtd_device *current_mtd_dev = NULL;
151u8 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100152
Ladislav Michlf8f744a2016-07-12 20:28:25 +0200153u8 use_defaults;
154
Stefan Roese68d7d652009-03-19 13:30:36 +0100155static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
156
157/* command line only routines */
158static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
159static int device_del(struct mtd_device *dev);
160
161/**
162 * Parses a string into a number. The number stored at ptr is
163 * potentially suffixed with K (for kilobytes, or 1024 bytes),
164 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
165 * 1073741824). If the number is suffixed with K, M, or G, then
166 * the return value is the number multiplied by one kilobyte, one
167 * megabyte, or one gigabyte, respectively.
168 *
169 * @param ptr where parse begins
170 * @param retptr output pointer to next char after parse completes (output)
171 * @return resulting unsigned int
172 */
Paul Burton39ac3442013-09-04 15:16:57 +0100173static u64 memsize_parse (const char *const ptr, const char **retptr)
Stefan Roese68d7d652009-03-19 13:30:36 +0100174{
Paul Burton39ac3442013-09-04 15:16:57 +0100175 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
Stefan Roese68d7d652009-03-19 13:30:36 +0100176
177 switch (**retptr) {
178 case 'G':
179 case 'g':
180 ret <<= 10;
181 case 'M':
182 case 'm':
183 ret <<= 10;
184 case 'K':
185 case 'k':
186 ret <<= 10;
187 (*retptr)++;
188 default:
189 break;
190 }
191
192 return ret;
193}
194
195/**
196 * Format string describing supplied size. This routine does the opposite job
197 * to memsize_parse(). Size in bytes is converted to string and if possible
198 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
199 *
200 * Note, that this routine does not check for buffer overflow, it's the caller
201 * who must assure enough space.
202 *
203 * @param buf output buffer
204 * @param size size to be converted to string
205 */
Paul Burton39ac3442013-09-04 15:16:57 +0100206static void memsize_format(char *buf, u64 size)
Stefan Roese68d7d652009-03-19 13:30:36 +0100207{
208#define SIZE_GB ((u32)1024*1024*1024)
209#define SIZE_MB ((u32)1024*1024)
210#define SIZE_KB ((u32)1024)
211
212 if ((size % SIZE_GB) == 0)
Paul Burton39ac3442013-09-04 15:16:57 +0100213 sprintf(buf, "%llug", size/SIZE_GB);
Stefan Roese68d7d652009-03-19 13:30:36 +0100214 else if ((size % SIZE_MB) == 0)
Paul Burton39ac3442013-09-04 15:16:57 +0100215 sprintf(buf, "%llum", size/SIZE_MB);
Stefan Roese68d7d652009-03-19 13:30:36 +0100216 else if (size % SIZE_KB == 0)
Paul Burton39ac3442013-09-04 15:16:57 +0100217 sprintf(buf, "%lluk", size/SIZE_KB);
Stefan Roese68d7d652009-03-19 13:30:36 +0100218 else
Paul Burton39ac3442013-09-04 15:16:57 +0100219 sprintf(buf, "%llu", size);
Stefan Roese68d7d652009-03-19 13:30:36 +0100220}
221
222/**
223 * This routine does global indexing of all partitions. Resulting index for
224 * current partition is saved in 'mtddevnum'. Current partition name in
225 * 'mtddevname'.
226 */
227static void index_partitions(void)
228{
Stefan Roese68d7d652009-03-19 13:30:36 +0100229 u16 mtddevnum;
230 struct part_info *part;
231 struct list_head *dentry;
232 struct mtd_device *dev;
233
Wolfgang Denke1d29502010-04-28 10:58:10 +0200234 debug("--- index partitions ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100235
Stefan Roese76b58832009-05-16 12:04:22 +0200236 if (current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100237 mtddevnum = 0;
238 list_for_each(dentry, &devices) {
239 dev = list_entry(dentry, struct mtd_device, link);
Stefan Roese76b58832009-05-16 12:04:22 +0200240 if (dev == current_mtd_dev) {
241 mtddevnum += current_mtd_partnum;
Simon Glass41ef3722013-02-24 17:33:22 +0000242 setenv_ulong("mtddevnum", mtddevnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100243 break;
244 }
245 mtddevnum += dev->num_parts;
246 }
247
Stefan Roese76b58832009-05-16 12:04:22 +0200248 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100249 setenv("mtddevname", part->name);
250
Wolfgang Denke1d29502010-04-28 10:58:10 +0200251 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100252 } else {
253 setenv("mtddevnum", NULL);
254 setenv("mtddevname", NULL);
255
Wolfgang Denke1d29502010-04-28 10:58:10 +0200256 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100257 }
258}
259
260/**
261 * Save current device and partition in environment variable 'partition'.
262 */
263static void current_save(void)
264{
265 char buf[16];
266
Wolfgang Denke1d29502010-04-28 10:58:10 +0200267 debug("--- current_save ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100268
Stefan Roese76b58832009-05-16 12:04:22 +0200269 if (current_mtd_dev) {
270 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
271 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100272
273 setenv("partition", buf);
274 strncpy(last_partition, buf, 16);
275
Wolfgang Denke1d29502010-04-28 10:58:10 +0200276 debug("=> partition %s\n", buf);
Stefan Roese68d7d652009-03-19 13:30:36 +0100277 } else {
278 setenv("partition", NULL);
279 last_partition[0] = '\0';
280
Wolfgang Denke1d29502010-04-28 10:58:10 +0200281 debug("=> partition NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100282 }
283 index_partitions();
284}
285
Ben Gardiner0a026d32010-08-31 17:48:00 -0400286
287/**
288 * Produce a mtd_info given a type and num.
289 *
290 * @param type mtd type
291 * @param num mtd number
292 * @param mtd a pointer to an mtd_info instance (output)
293 * @return 0 if device is valid, 1 otherwise
294 */
295static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
296{
297 char mtd_dev[16];
298
299 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
300 *mtd = get_mtd_device_nm(mtd_dev);
301 if (IS_ERR(*mtd)) {
302 printf("Device %s not found!\n", mtd_dev);
303 return 1;
304 }
Heiko Schocher1668d642014-07-14 09:17:11 +0200305 put_mtd_device(*mtd);
Ben Gardiner0a026d32010-08-31 17:48:00 -0400306
307 return 0;
308}
309
Stefan Roese68d7d652009-03-19 13:30:36 +0100310/**
Stefan Roese864aa032009-05-12 14:31:56 +0200311 * Performs sanity check for supplied flash partition.
312 * Table of existing MTD flash devices is searched and partition device
Stefan Roese68d7d652009-03-19 13:30:36 +0100313 * is located. Alignment with the granularity of nand erasesize is verified.
314 *
315 * @param id of the parent device
316 * @param part partition to validate
317 * @return 0 if partition is valid, 1 otherwise
318 */
Stefan Roese864aa032009-05-12 14:31:56 +0200319static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
Stefan Roese68d7d652009-03-19 13:30:36 +0100320{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400321 struct mtd_info *mtd = NULL;
Stefan Roese864aa032009-05-12 14:31:56 +0200322 int i, j;
323 ulong start;
Paul Burton39ac3442013-09-04 15:16:57 +0100324 u64 offset, size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100325
Ben Gardiner0a026d32010-08-31 17:48:00 -0400326 if (get_mtd_info(id->type, id->num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200327 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100328
329 part->sector_size = mtd->erasesize;
330
Stefan Roese864aa032009-05-12 14:31:56 +0200331 if (!mtd->numeraseregions) {
332 /*
333 * Only one eraseregion (NAND, OneNAND or uniform NOR),
334 * checking for alignment is easy here
335 */
Paul Burton39ac3442013-09-04 15:16:57 +0100336 offset = part->offset;
337 if (do_div(offset, mtd->erasesize)) {
Stefan Roese864aa032009-05-12 14:31:56 +0200338 printf("%s%d: partition (%s) start offset"
339 "alignment incorrect\n",
340 MTD_DEV_TYPE(id->type), id->num, part->name);
341 return 1;
342 }
Stefan Roese68d7d652009-03-19 13:30:36 +0100343
Paul Burton39ac3442013-09-04 15:16:57 +0100344 size = part->size;
345 if (do_div(size, mtd->erasesize)) {
Stefan Roese864aa032009-05-12 14:31:56 +0200346 printf("%s%d: partition (%s) size alignment incorrect\n",
347 MTD_DEV_TYPE(id->type), id->num, part->name);
348 return 1;
349 }
350 } else {
351 /*
352 * Multiple eraseregions (non-uniform NOR),
353 * checking for alignment is more complex here
354 */
355
356 /* Check start alignment */
357 for (i = 0; i < mtd->numeraseregions; i++) {
358 start = mtd->eraseregions[i].offset;
359 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
360 if (part->offset == start)
361 goto start_ok;
362 start += mtd->eraseregions[i].erasesize;
363 }
364 }
365
366 printf("%s%d: partition (%s) start offset alignment incorrect\n",
367 MTD_DEV_TYPE(id->type), id->num, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100368 return 1;
Stefan Roese864aa032009-05-12 14:31:56 +0200369
370 start_ok:
371
372 /* Check end/size alignment */
373 for (i = 0; i < mtd->numeraseregions; i++) {
374 start = mtd->eraseregions[i].offset;
375 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
376 if ((part->offset + part->size) == start)
377 goto end_ok;
378 start += mtd->eraseregions[i].erasesize;
379 }
380 }
381 /* Check last sector alignment */
382 if ((part->offset + part->size) == start)
383 goto end_ok;
384
385 printf("%s%d: partition (%s) size alignment incorrect\n",
386 MTD_DEV_TYPE(id->type), id->num, part->name);
387 return 1;
388
389 end_ok:
390 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100391 }
392
393 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100394}
395
396
397/**
Otavio Salvadorf5019912013-10-03 08:04:38 -0300398 * Performs sanity check for supplied partition. Offset and size are
399 * verified to be within valid range. Partition type is checked and
400 * part_validate_eraseblock() is called with the argument of part.
Stefan Roese68d7d652009-03-19 13:30:36 +0100401 *
402 * @param id of the parent device
403 * @param part partition to validate
404 * @return 0 if partition is valid, 1 otherwise
405 */
406static int part_validate(struct mtdids *id, struct part_info *part)
407{
408 if (part->size == SIZE_REMAINING)
409 part->size = id->size - part->offset;
410
411 if (part->offset > id->size) {
Paul Burton39ac3442013-09-04 15:16:57 +0100412 printf("%s: offset %08llx beyond flash size %08llx\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100413 id->mtd_id, part->offset, id->size);
414 return 1;
415 }
416
417 if ((part->offset + part->size) <= part->offset) {
418 printf("%s%d: partition (%s) size too big\n",
419 MTD_DEV_TYPE(id->type), id->num, part->name);
420 return 1;
421 }
422
423 if (part->offset + part->size > id->size) {
424 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
425 return 1;
426 }
427
Stefan Roese864aa032009-05-12 14:31:56 +0200428 /*
429 * Now we need to check if the partition starts and ends on
430 * sector (eraseblock) regions
431 */
432 return part_validate_eraseblock(id, part);
Stefan Roese68d7d652009-03-19 13:30:36 +0100433}
434
435/**
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400436 * Delete selected partition from the partition list of the specified device.
Stefan Roese68d7d652009-03-19 13:30:36 +0100437 *
438 * @param dev device to delete partition from
439 * @param part partition to delete
440 * @return 0 on success, 1 otherwise
441 */
442static int part_del(struct mtd_device *dev, struct part_info *part)
443{
444 u8 current_save_needed = 0;
445
446 /* if there is only one partition, remove whole device */
447 if (dev->num_parts == 1)
448 return device_del(dev);
449
450 /* otherwise just delete this partition */
451
Stefan Roese76b58832009-05-16 12:04:22 +0200452 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100453 /* we are modyfing partitions for the current device,
454 * update current */
455 struct part_info *curr_pi;
Stefan Roese76b58832009-05-16 12:04:22 +0200456 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100457
458 if (curr_pi) {
459 if (curr_pi == part) {
460 printf("current partition deleted, resetting current to 0\n");
Stefan Roese76b58832009-05-16 12:04:22 +0200461 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100462 } else if (part->offset <= curr_pi->offset) {
Stefan Roese76b58832009-05-16 12:04:22 +0200463 current_mtd_partnum--;
Stefan Roese68d7d652009-03-19 13:30:36 +0100464 }
465 current_save_needed = 1;
466 }
467 }
468
Stefan Roese68d7d652009-03-19 13:30:36 +0100469 list_del(&part->link);
470 free(part);
471 dev->num_parts--;
472
473 if (current_save_needed > 0)
474 current_save();
475 else
476 index_partitions();
477
478 return 0;
479}
480
481/**
482 * Delete all partitions from parts head list, free memory.
483 *
484 * @param head list of partitions to delete
485 */
486static void part_delall(struct list_head *head)
487{
488 struct list_head *entry, *n;
489 struct part_info *part_tmp;
490
491 /* clean tmp_list and free allocated memory */
492 list_for_each_safe(entry, n, head) {
493 part_tmp = list_entry(entry, struct part_info, link);
494
Stefan Roese68d7d652009-03-19 13:30:36 +0100495 list_del(entry);
496 free(part_tmp);
497 }
498}
499
500/**
501 * Add new partition to the supplied partition list. Make sure partitions are
502 * sorted by offset in ascending order.
503 *
504 * @param head list this partition is to be added to
505 * @param new partition to be added
506 */
507static int part_sort_add(struct mtd_device *dev, struct part_info *part)
508{
509 struct list_head *entry;
510 struct part_info *new_pi, *curr_pi;
511
512 /* link partition to parrent dev */
513 part->dev = dev;
514
515 if (list_empty(&dev->parts)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +0200516 debug("part_sort_add: list empty\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100517 list_add(&part->link, &dev->parts);
518 dev->num_parts++;
519 index_partitions();
520 return 0;
521 }
522
523 new_pi = list_entry(&part->link, struct part_info, link);
524
525 /* get current partition info if we are updating current device */
526 curr_pi = NULL;
Stefan Roese76b58832009-05-16 12:04:22 +0200527 if (dev == current_mtd_dev)
528 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100529
530 list_for_each(entry, &dev->parts) {
531 struct part_info *pi;
532
533 pi = list_entry(entry, struct part_info, link);
534
535 /* be compliant with kernel cmdline, allow only one partition at offset zero */
536 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
537 printf("cannot add second partition at offset 0\n");
538 return 1;
539 }
540
541 if (new_pi->offset <= pi->offset) {
542 list_add_tail(&part->link, entry);
543 dev->num_parts++;
544
545 if (curr_pi && (pi->offset <= curr_pi->offset)) {
546 /* we are modyfing partitions for the current
547 * device, update current */
Stefan Roese76b58832009-05-16 12:04:22 +0200548 current_mtd_partnum++;
Stefan Roese68d7d652009-03-19 13:30:36 +0100549 current_save();
550 } else {
551 index_partitions();
552 }
553 return 0;
554 }
555 }
556
557 list_add_tail(&part->link, &dev->parts);
558 dev->num_parts++;
559 index_partitions();
560 return 0;
561}
562
563/**
564 * Add provided partition to the partition list of a given device.
565 *
566 * @param dev device to which partition is added
567 * @param part partition to be added
568 * @return 0 on success, 1 otherwise
569 */
570static int part_add(struct mtd_device *dev, struct part_info *part)
571{
572 /* verify alignment and size */
573 if (part_validate(dev->id, part) != 0)
574 return 1;
575
576 /* partition is ok, add it to the list */
577 if (part_sort_add(dev, part) != 0)
578 return 1;
579
580 return 0;
581}
582
583/**
584 * Parse one partition definition, allocate memory and return pointer to this
585 * location in retpart.
586 *
587 * @param partdef pointer to the partition definition string i.e. <part-def>
588 * @param ret output pointer to next char after parse completes (output)
589 * @param retpart pointer to the allocated partition (output)
590 * @return 0 on success, 1 otherwise
591 */
592static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
593{
594 struct part_info *part;
Paul Burton39ac3442013-09-04 15:16:57 +0100595 u64 size;
596 u64 offset;
Stefan Roese68d7d652009-03-19 13:30:36 +0100597 const char *name;
598 int name_len;
599 unsigned int mask_flags;
600 const char *p;
601
602 p = partdef;
603 *retpart = NULL;
604 *ret = NULL;
605
606 /* fetch the partition size */
607 if (*p == '-') {
608 /* assign all remaining space to this partition */
Wolfgang Denke1d29502010-04-28 10:58:10 +0200609 debug("'-': remaining size assigned\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100610 size = SIZE_REMAINING;
611 p++;
612 } else {
613 size = memsize_parse(p, &p);
614 if (size < MIN_PART_SIZE) {
Paul Burton39ac3442013-09-04 15:16:57 +0100615 printf("partition size too small (%llx)\n", size);
Stefan Roese68d7d652009-03-19 13:30:36 +0100616 return 1;
617 }
618 }
619
620 /* check for offset */
621 offset = OFFSET_NOT_SPECIFIED;
622 if (*p == '@') {
623 p++;
624 offset = memsize_parse(p, &p);
625 }
626
627 /* now look for the name */
628 if (*p == '(') {
629 name = ++p;
630 if ((p = strchr(name, ')')) == NULL) {
631 printf("no closing ) found in partition name\n");
632 return 1;
633 }
634 name_len = p - name + 1;
635 if ((name_len - 1) == 0) {
636 printf("empty partition name\n");
637 return 1;
638 }
639 p++;
640 } else {
641 /* 0x00000000@0x00000000 */
642 name_len = 22;
643 name = NULL;
644 }
645
646 /* test for options */
647 mask_flags = 0;
648 if (strncmp(p, "ro", 2) == 0) {
649 mask_flags |= MTD_WRITEABLE_CMD;
650 p += 2;
651 }
652
653 /* check for next partition definition */
654 if (*p == ',') {
655 if (size == SIZE_REMAINING) {
656 *ret = NULL;
657 printf("no partitions allowed after a fill-up partition\n");
658 return 1;
659 }
660 *ret = ++p;
661 } else if ((*p == ';') || (*p == '\0')) {
662 *ret = p;
663 } else {
664 printf("unexpected character '%c' at the end of partition\n", *p);
665 *ret = NULL;
666 return 1;
667 }
668
669 /* allocate memory */
670 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
671 if (!part) {
672 printf("out of memory\n");
673 return 1;
674 }
675 memset(part, 0, sizeof(struct part_info) + name_len);
676 part->size = size;
677 part->offset = offset;
678 part->mask_flags = mask_flags;
679 part->name = (char *)(part + 1);
680
681 if (name) {
682 /* copy user provided name */
683 strncpy(part->name, name, name_len - 1);
684 part->auto_name = 0;
685 } else {
686 /* auto generated name in form of size@offset */
Paul Burton39ac3442013-09-04 15:16:57 +0100687 sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
Stefan Roese68d7d652009-03-19 13:30:36 +0100688 part->auto_name = 1;
689 }
690
691 part->name[name_len - 1] = '\0';
692 INIT_LIST_HEAD(&part->link);
693
Paul Burton39ac3442013-09-04 15:16:57 +0100694 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100695 part->name, part->size,
696 part->offset, part->mask_flags);
697
698 *retpart = part;
699 return 0;
700}
701
702/**
703 * Check device number to be within valid range for given device type.
704 *
Ben Gardiner0a026d32010-08-31 17:48:00 -0400705 * @param type mtd type
706 * @param num mtd number
707 * @param size a pointer to the size of the mtd device (output)
Stefan Roese68d7d652009-03-19 13:30:36 +0100708 * @return 0 if device is valid, 1 otherwise
709 */
Paul Burton39ac3442013-09-04 15:16:57 +0100710static int mtd_device_validate(u8 type, u8 num, u64 *size)
Stefan Roese68d7d652009-03-19 13:30:36 +0100711{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400712 struct mtd_info *mtd = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100713
Ben Gardiner0a026d32010-08-31 17:48:00 -0400714 if (get_mtd_info(type, num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200715 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100716
Stefan Roese864aa032009-05-12 14:31:56 +0200717 *size = mtd->size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100718
Stefan Roese864aa032009-05-12 14:31:56 +0200719 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100720}
721
722/**
723 * Delete all mtd devices from a supplied devices list, free memory allocated for
724 * each device and delete all device partitions.
725 *
726 * @return 0 on success, 1 otherwise
727 */
728static int device_delall(struct list_head *head)
729{
730 struct list_head *entry, *n;
731 struct mtd_device *dev_tmp;
732
733 /* clean devices list */
734 list_for_each_safe(entry, n, head) {
735 dev_tmp = list_entry(entry, struct mtd_device, link);
736 list_del(entry);
737 part_delall(&dev_tmp->parts);
738 free(dev_tmp);
739 }
740 INIT_LIST_HEAD(&devices);
741
742 return 0;
743}
744
745/**
746 * If provided device exists it's partitions are deleted, device is removed
747 * from device list and device memory is freed.
748 *
749 * @param dev device to be deleted
750 * @return 0 on success, 1 otherwise
751 */
752static int device_del(struct mtd_device *dev)
753{
754 part_delall(&dev->parts);
755 list_del(&dev->link);
756 free(dev);
757
Stefan Roese76b58832009-05-16 12:04:22 +0200758 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100759 /* we just deleted current device */
760 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200761 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100762 } else {
763 /* reset first partition from first dev from the
764 * devices list as current */
Stefan Roese76b58832009-05-16 12:04:22 +0200765 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
766 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100767 }
768 current_save();
769 return 0;
770 }
771
772 index_partitions();
773 return 0;
774}
775
776/**
777 * Search global device list and return pointer to the device of type and num
778 * specified.
779 *
780 * @param type device type
781 * @param num device number
782 * @return NULL if requested device does not exist
783 */
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100784struct mtd_device *device_find(u8 type, u8 num)
Stefan Roese68d7d652009-03-19 13:30:36 +0100785{
786 struct list_head *entry;
787 struct mtd_device *dev_tmp;
788
789 list_for_each(entry, &devices) {
790 dev_tmp = list_entry(entry, struct mtd_device, link);
791
792 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
793 return dev_tmp;
794 }
795
796 return NULL;
797}
798
799/**
800 * Add specified device to the global device list.
801 *
802 * @param dev device to be added
803 */
804static void device_add(struct mtd_device *dev)
805{
806 u8 current_save_needed = 0;
807
808 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200809 current_mtd_dev = dev;
810 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100811 current_save_needed = 1;
812 }
813
814 list_add_tail(&dev->link, &devices);
815
816 if (current_save_needed > 0)
817 current_save();
818 else
819 index_partitions();
820}
821
822/**
823 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
824 * return pointer to the device structure.
825 *
826 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
827 * @param ret output pointer to next char after parse completes (output)
828 * @param retdev pointer to the allocated device (output)
829 * @return 0 on success, 1 otherwise
830 */
831static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
832{
833 struct mtd_device *dev;
834 struct part_info *part;
835 struct mtdids *id;
836 const char *mtd_id;
837 unsigned int mtd_id_len;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200838 const char *p;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200839 const char *pend;
Stefan Roese68d7d652009-03-19 13:30:36 +0100840 LIST_HEAD(tmp_list);
841 struct list_head *entry, *n;
842 u16 num_parts;
Paul Burton39ac3442013-09-04 15:16:57 +0100843 u64 offset;
Stefan Roese68d7d652009-03-19 13:30:36 +0100844 int err = 1;
845
Wolfgang Denke1d29502010-04-28 10:58:10 +0200846 debug("===device_parse===\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100847
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200848 assert(retdev);
849 *retdev = NULL;
850
851 if (ret)
852 *ret = NULL;
853
Stefan Roese68d7d652009-03-19 13:30:36 +0100854 /* fetch <mtd-id> */
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200855 mtd_id = p = mtd_dev;
Stefan Roese68d7d652009-03-19 13:30:36 +0100856 if (!(p = strchr(mtd_id, ':'))) {
857 printf("no <mtd-id> identifier\n");
858 return 1;
859 }
860 mtd_id_len = p - mtd_id + 1;
861 p++;
862
863 /* verify if we have a valid device specified */
864 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
865 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
866 return 1;
867 }
868
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200869#ifdef DEBUG
870 pend = strchr(p, ';');
871#endif
Wolfgang Denke1d29502010-04-28 10:58:10 +0200872 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100873 id->type, MTD_DEV_TYPE(id->type),
874 id->num, id->mtd_id);
Vasili Galka5d69a5d2014-08-26 13:45:48 +0300875 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
Stefan Roese68d7d652009-03-19 13:30:36 +0100876
877
878 /* parse partitions */
879 num_parts = 0;
880
881 offset = 0;
882 if ((dev = device_find(id->type, id->num)) != NULL) {
883 /* if device already exists start at the end of the last partition */
884 part = list_entry(dev->parts.prev, struct part_info, link);
885 offset = part->offset + part->size;
886 }
887
888 while (p && (*p != '\0') && (*p != ';')) {
889 err = 1;
890 if ((part_parse(p, &p, &part) != 0) || (!part))
891 break;
892
893 /* calculate offset when not specified */
894 if (part->offset == OFFSET_NOT_SPECIFIED)
895 part->offset = offset;
896 else
897 offset = part->offset;
898
899 /* verify alignment and size */
900 if (part_validate(id, part) != 0)
901 break;
902
903 offset += part->size;
904
905 /* partition is ok, add it to the list */
906 list_add_tail(&part->link, &tmp_list);
907 num_parts++;
908 err = 0;
909 }
910 if (err == 1) {
911 part_delall(&tmp_list);
912 return 1;
913 }
914
915 if (num_parts == 0) {
916 printf("no partitions for device %s%d (%s)\n",
917 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
918 return 1;
919 }
920
Wolfgang Denke1d29502010-04-28 10:58:10 +0200921 debug("\ntotal partitions: %d\n", num_parts);
Stefan Roese68d7d652009-03-19 13:30:36 +0100922
923 /* check for next device presence */
924 if (p) {
925 if (*p == ';') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200926 if (ret)
927 *ret = ++p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100928 } else if (*p == '\0') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200929 if (ret)
930 *ret = p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100931 } else {
932 printf("unexpected character '%c' at the end of device\n", *p);
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200933 if (ret)
934 *ret = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100935 return 1;
936 }
937 }
938
939 /* allocate memory for mtd_device structure */
940 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
941 printf("out of memory\n");
942 return 1;
943 }
944 memset(dev, 0, sizeof(struct mtd_device));
945 dev->id = id;
946 dev->num_parts = 0; /* part_sort_add increments num_parts */
947 INIT_LIST_HEAD(&dev->parts);
948 INIT_LIST_HEAD(&dev->link);
949
950 /* move partitions from tmp_list to dev->parts */
951 list_for_each_safe(entry, n, &tmp_list) {
952 part = list_entry(entry, struct part_info, link);
953 list_del(entry);
954 if (part_sort_add(dev, part) != 0) {
955 device_del(dev);
956 return 1;
957 }
958 }
959
960 *retdev = dev;
961
Wolfgang Denke1d29502010-04-28 10:58:10 +0200962 debug("===\n\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100963 return 0;
964}
965
966/**
967 * Initialize global device list.
968 *
969 * @return 0 on success, 1 otherwise
970 */
971static int mtd_devices_init(void)
972{
973 last_parts[0] = '\0';
Stefan Roese76b58832009-05-16 12:04:22 +0200974 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100975 current_save();
976
977 return device_delall(&devices);
978}
979
980/*
981 * Search global mtdids list and find id of requested type and number.
982 *
983 * @return pointer to the id if it exists, NULL otherwise
984 */
985static struct mtdids* id_find(u8 type, u8 num)
986{
987 struct list_head *entry;
988 struct mtdids *id;
989
990 list_for_each(entry, &mtdids) {
991 id = list_entry(entry, struct mtdids, link);
992
993 if ((id->type == type) && (id->num == num))
994 return id;
995 }
996
997 return NULL;
998}
999
1000/**
1001 * Search global mtdids list and find id of a requested mtd_id.
1002 *
1003 * Note: first argument is not null terminated.
1004 *
1005 * @param mtd_id string containing requested mtd_id
1006 * @param mtd_id_len length of supplied mtd_id
1007 * @return pointer to the id if it exists, NULL otherwise
1008 */
1009static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1010{
1011 struct list_head *entry;
1012 struct mtdids *id;
1013
Wolfgang Denke1d29502010-04-28 10:58:10 +02001014 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001015 mtd_id_len, mtd_id, mtd_id_len);
1016
1017 list_for_each(entry, &mtdids) {
1018 id = list_entry(entry, struct mtdids, link);
1019
Vasili Galka5d69a5d2014-08-26 13:45:48 +03001020 debug("entry: '%s' (len = %zu)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001021 id->mtd_id, strlen(id->mtd_id));
1022
1023 if (mtd_id_len != strlen(id->mtd_id))
1024 continue;
1025 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1026 return id;
1027 }
1028
1029 return NULL;
1030}
1031
1032/**
1033 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1034 * return device type and number.
1035 *
1036 * @param id string describing device id
1037 * @param ret_id output pointer to next char after parse completes (output)
1038 * @param dev_type parsed device type (output)
1039 * @param dev_num parsed device number (output)
1040 * @return 0 on success, 1 otherwise
1041 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001042int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1043 u8 *dev_num)
Stefan Roese68d7d652009-03-19 13:30:36 +01001044{
1045 const char *p = id;
1046
1047 *dev_type = 0;
1048 if (strncmp(p, "nand", 4) == 0) {
1049 *dev_type = MTD_DEV_TYPE_NAND;
1050 p += 4;
1051 } else if (strncmp(p, "nor", 3) == 0) {
1052 *dev_type = MTD_DEV_TYPE_NOR;
1053 p += 3;
1054 } else if (strncmp(p, "onenand", 7) == 0) {
1055 *dev_type = MTD_DEV_TYPE_ONENAND;
1056 p += 7;
1057 } else {
1058 printf("incorrect device type in %s\n", id);
1059 return 1;
1060 }
1061
1062 if (!isdigit(*p)) {
1063 printf("incorrect device number in %s\n", id);
1064 return 1;
1065 }
1066
1067 *dev_num = simple_strtoul(p, (char **)&p, 0);
1068 if (ret_id)
1069 *ret_id = p;
1070 return 0;
1071}
1072
1073/**
1074 * Process all devices and generate corresponding mtdparts string describing
1075 * all partitions on all devices.
1076 *
1077 * @param buf output buffer holding generated mtdparts string (output)
1078 * @param buflen buffer size
1079 * @return 0 on success, 1 otherwise
1080 */
1081static int generate_mtdparts(char *buf, u32 buflen)
1082{
1083 struct list_head *pentry, *dentry;
1084 struct mtd_device *dev;
1085 struct part_info *part, *prev_part;
1086 char *p = buf;
1087 char tmpbuf[32];
Paul Burton39ac3442013-09-04 15:16:57 +01001088 u64 size, offset;
1089 u32 len, part_cnt;
Stefan Roese68d7d652009-03-19 13:30:36 +01001090 u32 maxlen = buflen - 1;
1091
Wolfgang Denke1d29502010-04-28 10:58:10 +02001092 debug("--- generate_mtdparts ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001093
1094 if (list_empty(&devices)) {
1095 buf[0] = '\0';
1096 return 0;
1097 }
1098
Ben Whitten192bc692015-12-30 13:05:58 +00001099 strcpy(p, "mtdparts=");
Stefan Roese68d7d652009-03-19 13:30:36 +01001100 p += 9;
1101
1102 list_for_each(dentry, &devices) {
1103 dev = list_entry(dentry, struct mtd_device, link);
1104
1105 /* copy mtd_id */
1106 len = strlen(dev->id->mtd_id) + 1;
1107 if (len > maxlen)
1108 goto cleanup;
1109 memcpy(p, dev->id->mtd_id, len - 1);
1110 p += len - 1;
1111 *(p++) = ':';
1112 maxlen -= len;
1113
1114 /* format partitions */
1115 prev_part = NULL;
1116 part_cnt = 0;
1117 list_for_each(pentry, &dev->parts) {
1118 part = list_entry(pentry, struct part_info, link);
1119 size = part->size;
1120 offset = part->offset;
1121 part_cnt++;
1122
1123 /* partition size */
1124 memsize_format(tmpbuf, size);
1125 len = strlen(tmpbuf);
1126 if (len > maxlen)
1127 goto cleanup;
1128 memcpy(p, tmpbuf, len);
1129 p += len;
1130 maxlen -= len;
1131
1132
1133 /* add offset only when there is a gap between
1134 * partitions */
1135 if ((!prev_part && (offset != 0)) ||
1136 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1137
1138 memsize_format(tmpbuf, offset);
1139 len = strlen(tmpbuf) + 1;
1140 if (len > maxlen)
1141 goto cleanup;
1142 *(p++) = '@';
1143 memcpy(p, tmpbuf, len - 1);
1144 p += len - 1;
1145 maxlen -= len;
1146 }
1147
1148 /* copy name only if user supplied */
1149 if(!part->auto_name) {
1150 len = strlen(part->name) + 2;
1151 if (len > maxlen)
1152 goto cleanup;
1153
1154 *(p++) = '(';
1155 memcpy(p, part->name, len - 2);
1156 p += len - 2;
1157 *(p++) = ')';
1158 maxlen -= len;
1159 }
1160
1161 /* ro mask flag */
1162 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1163 len = 2;
1164 if (len > maxlen)
1165 goto cleanup;
1166 *(p++) = 'r';
1167 *(p++) = 'o';
1168 maxlen -= 2;
1169 }
1170
1171 /* print ',' separator if there are other partitions
1172 * following */
1173 if (dev->num_parts > part_cnt) {
1174 if (1 > maxlen)
1175 goto cleanup;
1176 *(p++) = ',';
1177 maxlen--;
1178 }
1179 prev_part = part;
1180 }
1181 /* print ';' separator if there are other devices following */
1182 if (dentry->next != &devices) {
1183 if (1 > maxlen)
1184 goto cleanup;
1185 *(p++) = ';';
1186 maxlen--;
1187 }
1188 }
1189
1190 /* we still have at least one char left, as we decremented maxlen at
1191 * the begining */
1192 *p = '\0';
1193
1194 return 0;
1195
1196cleanup:
1197 last_parts[0] = '\0';
1198 return 1;
1199}
1200
1201/**
1202 * Call generate_mtdparts to process all devices and generate corresponding
1203 * mtdparts string, save it in mtdparts environment variable.
1204 *
1205 * @param buf output buffer holding generated mtdparts string (output)
1206 * @param buflen buffer size
1207 * @return 0 on success, 1 otherwise
1208 */
1209static int generate_mtdparts_save(char *buf, u32 buflen)
1210{
1211 int ret;
1212
1213 ret = generate_mtdparts(buf, buflen);
1214
1215 if ((buf[0] != '\0') && (ret == 0))
1216 setenv("mtdparts", buf);
1217 else
1218 setenv("mtdparts", NULL);
1219
1220 return ret;
1221}
1222
Ben Gardiner04ac3802010-08-31 17:48:02 -04001223#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
Stefan Roese68d7d652009-03-19 13:30:36 +01001224/**
Ben Gardiner04ac3802010-08-31 17:48:02 -04001225 * Get the net size (w/o bad blocks) of the given partition.
1226 *
1227 * @param mtd the mtd info
1228 * @param part the partition
1229 * @return the calculated net size of this partition
Stefan Roese68d7d652009-03-19 13:30:36 +01001230 */
Ben Gardiner04ac3802010-08-31 17:48:02 -04001231static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1232{
Scott Wood36650ca2010-09-09 15:40:03 -05001233 uint64_t i, net_size = 0;
1234
Ben Gardiner04ac3802010-08-31 17:48:02 -04001235 if (!mtd->block_isbad)
1236 return part->size;
1237
Ben Gardiner04ac3802010-08-31 17:48:02 -04001238 for (i = 0; i < part->size; i += mtd->erasesize) {
1239 if (!mtd->block_isbad(mtd, part->offset + i))
1240 net_size += mtd->erasesize;
1241 }
Scott Wood36650ca2010-09-09 15:40:03 -05001242
Ben Gardiner04ac3802010-08-31 17:48:02 -04001243 return net_size;
1244}
1245#endif
1246
1247static void print_partition_table(void)
Stefan Roese68d7d652009-03-19 13:30:36 +01001248{
1249 struct list_head *dentry, *pentry;
1250 struct part_info *part;
1251 struct mtd_device *dev;
1252 int part_num;
1253
Stefan Roese68d7d652009-03-19 13:30:36 +01001254 list_for_each(dentry, &devices) {
1255 dev = list_entry(dentry, struct mtd_device, link);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001256 /* list partitions for given device */
1257 part_num = 0;
1258#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1259 struct mtd_info *mtd;
1260
1261 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1262 return;
1263
1264 printf("\ndevice %s%d <%s>, # parts = %d\n",
1265 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1266 dev->id->mtd_id, dev->num_parts);
1267 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1268
1269 list_for_each(pentry, &dev->parts) {
1270 u32 net_size;
1271 char *size_note;
1272
1273 part = list_entry(pentry, struct part_info, link);
1274 net_size = net_part_size(mtd, part);
1275 size_note = part->size == net_size ? " " : " (!)";
1276 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1277 part_num, part->name, part->size,
1278 net_size, size_note, part->offset,
1279 part->mask_flags);
1280#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001281 printf("\ndevice %s%d <%s>, # parts = %d\n",
1282 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1283 dev->id->mtd_id, dev->num_parts);
David Brownell08f077d2009-04-16 19:55:48 -07001284 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001285
Stefan Roese68d7d652009-03-19 13:30:36 +01001286 list_for_each(pentry, &dev->parts) {
1287 part = list_entry(pentry, struct part_info, link);
Paul Burton39ac3442013-09-04 15:16:57 +01001288 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001289 part_num, part->name, part->size,
1290 part->offset, part->mask_flags);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001291#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001292 part_num++;
1293 }
1294 }
Ben Gardiner04ac3802010-08-31 17:48:02 -04001295
Stefan Roese68d7d652009-03-19 13:30:36 +01001296 if (list_empty(&devices))
1297 printf("no partitions defined\n");
Ben Gardiner04ac3802010-08-31 17:48:02 -04001298}
1299
1300/**
1301 * Format and print out a partition list for each device from global device
1302 * list.
1303 */
1304static void list_partitions(void)
1305{
1306 struct part_info *part;
1307
1308 debug("\n---list_partitions---\n");
1309 print_partition_table();
Stefan Roese68d7d652009-03-19 13:30:36 +01001310
Stefan Roese76b58832009-05-16 12:04:22 +02001311 /* current_mtd_dev is not NULL only when we have non empty device list */
1312 if (current_mtd_dev) {
1313 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001314 if (part) {
Paul Burton39ac3442013-09-04 15:16:57 +01001315 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001316 MTD_DEV_TYPE(current_mtd_dev->id->type),
1317 current_mtd_dev->id->num, current_mtd_partnum,
Stefan Roese68d7d652009-03-19 13:30:36 +01001318 part->name, part->size, part->offset);
1319 } else {
1320 printf("could not get current partition info\n\n");
1321 }
1322 }
1323
1324 printf("\ndefaults:\n");
Wolfgang Denk36c91692009-05-17 16:01:54 +02001325 printf("mtdids : %s\n",
1326 mtdids_default ? mtdids_default : "none");
Anatolij Gustschina6934472010-02-24 00:29:44 +01001327 /*
1328 * Using printf() here results in printbuffer overflow
1329 * if default mtdparts string is greater than console
1330 * printbuffer. Use puts() to prevent system crashes.
1331 */
1332 puts("mtdparts: ");
1333 puts(mtdparts_default ? mtdparts_default : "none");
1334 puts("\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001335}
1336
1337/**
1338 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1339 * corresponding device and verify partition number.
1340 *
1341 * @param id string describing device and partition or partition name
1342 * @param dev pointer to the requested device (output)
1343 * @param part_num verified partition number (output)
1344 * @param part pointer to requested partition (output)
1345 * @return 0 on success, 1 otherwise
1346 */
1347int find_dev_and_part(const char *id, struct mtd_device **dev,
1348 u8 *part_num, struct part_info **part)
1349{
1350 struct list_head *dentry, *pentry;
1351 u8 type, dnum, pnum;
1352 const char *p;
1353
Wolfgang Denke1d29502010-04-28 10:58:10 +02001354 debug("--- find_dev_and_part ---\nid = %s\n", id);
Stefan Roese68d7d652009-03-19 13:30:36 +01001355
1356 list_for_each(dentry, &devices) {
1357 *part_num = 0;
1358 *dev = list_entry(dentry, struct mtd_device, link);
1359 list_for_each(pentry, &(*dev)->parts) {
1360 *part = list_entry(pentry, struct part_info, link);
1361 if (strcmp((*part)->name, id) == 0)
1362 return 0;
1363 (*part_num)++;
1364 }
1365 }
1366
1367 p = id;
1368 *dev = NULL;
1369 *part = NULL;
1370 *part_num = 0;
1371
1372 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1373 return 1;
1374
1375 if ((*p++ != ',') || (*p == '\0')) {
1376 printf("no partition number specified\n");
1377 return 1;
1378 }
1379 pnum = simple_strtoul(p, (char **)&p, 0);
1380 if (*p != '\0') {
1381 printf("unexpected trailing character '%c'\n", *p);
1382 return 1;
1383 }
1384
1385 if ((*dev = device_find(type, dnum)) == NULL) {
1386 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1387 return 1;
1388 }
1389
1390 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1391 printf("no such partition\n");
1392 *dev = NULL;
1393 return 1;
1394 }
1395
1396 *part_num = pnum;
1397
1398 return 0;
1399}
1400
1401/**
1402 * Find and delete partition. For partition id format see find_dev_and_part().
1403 *
1404 * @param id string describing device and partition
1405 * @return 0 on success, 1 otherwise
1406 */
1407static int delete_partition(const char *id)
1408{
1409 u8 pnum;
1410 struct mtd_device *dev;
1411 struct part_info *part;
1412
1413 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1414
Paul Burton39ac3442013-09-04 15:16:57 +01001415 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001416 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1417 part->name, part->size, part->offset);
1418
1419 if (part_del(dev, part) != 0)
1420 return 1;
1421
1422 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00001423 printf("generated mtdparts too long, resetting to null\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001424 return 1;
1425 }
1426 return 0;
1427 }
1428
1429 printf("partition %s not found\n", id);
1430 return 1;
1431}
1432
Ben Gardinerca75b202010-08-31 17:48:03 -04001433#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1434/**
1435 * Increase the size of the given partition so that it's net size is at least
1436 * as large as the size member and such that the next partition would start on a
1437 * good block if it were adjacent to this partition.
1438 *
1439 * @param mtd the mtd device
1440 * @param part the partition
1441 * @param next_offset pointer to the offset of the next partition after this
1442 * partition's size has been modified (output)
1443 */
1444static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1445 uint64_t *next_offset)
1446{
1447 uint64_t net_size, padding_size = 0;
1448 int truncated;
1449
1450 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1451 &truncated);
1452
1453 /*
1454 * Absorb bad blocks immediately following this
1455 * partition also into the partition, such that
1456 * the next partition starts with a good block.
1457 */
1458 if (!truncated) {
1459 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1460 mtd->erasesize, &padding_size, &truncated);
1461 if (truncated)
1462 padding_size = 0;
1463 else
1464 padding_size -= mtd->erasesize;
1465 }
1466
1467 if (truncated) {
1468 printf("truncated partition %s to %lld bytes\n", part->name,
1469 (uint64_t) net_size + padding_size);
1470 }
1471
1472 part->size = net_size + padding_size;
1473 *next_offset = part->offset + part->size;
1474}
1475
1476/**
1477 * Adjust all of the partition sizes, such that all partitions are at least
1478 * as big as their mtdparts environment variable sizes and they each start
1479 * on a good block.
1480 *
1481 * @return 0 on success, 1 otherwise
1482 */
1483static int spread_partitions(void)
1484{
1485 struct list_head *dentry, *pentry;
1486 struct mtd_device *dev;
1487 struct part_info *part;
1488 struct mtd_info *mtd;
1489 int part_num;
1490 uint64_t cur_offs;
1491
1492 list_for_each(dentry, &devices) {
1493 dev = list_entry(dentry, struct mtd_device, link);
1494
1495 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1496 return 1;
1497
1498 part_num = 0;
1499 cur_offs = 0;
1500 list_for_each(pentry, &dev->parts) {
1501 part = list_entry(pentry, struct part_info, link);
1502
1503 debug("spread_partitions: device = %s%d, partition %d ="
Steve Rae59441ac2016-06-29 13:50:59 -07001504 " (%s) 0x%08llx@0x%08llx\n",
Ben Gardinerca75b202010-08-31 17:48:03 -04001505 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1506 part_num, part->name, part->size,
1507 part->offset);
1508
1509 if (cur_offs > part->offset)
1510 part->offset = cur_offs;
1511
1512 spread_partition(mtd, part, &cur_offs);
1513
1514 part_num++;
1515 }
1516 }
1517
1518 index_partitions();
1519
1520 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00001521 printf("generated mtdparts too long, resetting to null\n");
Ben Gardinerca75b202010-08-31 17:48:03 -04001522 return 1;
1523 }
1524 return 0;
1525}
1526#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1527
Stefan Roese68d7d652009-03-19 13:30:36 +01001528/**
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001529 * The mtdparts variable tends to be long. If we need to access it
1530 * before the env is relocated, then we need to use our own stack
1531 * buffer. gd->env_buf will be too small.
1532 *
1533 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1534 * @return mtdparts variable string, NULL if not found
1535 */
1536static const char *getenv_mtdparts(char *buf)
1537{
1538 if (gd->flags & GD_FLG_ENV_READY)
1539 return getenv("mtdparts");
1540 if (getenv_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1)
1541 return buf;
1542 return NULL;
1543}
1544
1545/**
Stefan Roese68d7d652009-03-19 13:30:36 +01001546 * Accept character string describing mtd partitions and call device_parse()
1547 * for each entry. Add created devices to the global devices list.
1548 *
1549 * @param mtdparts string specifing mtd partitions
1550 * @return 0 on success, 1 otherwise
1551 */
1552static int parse_mtdparts(const char *const mtdparts)
1553{
Ladislav Michl06a040a2016-07-12 20:28:23 +02001554 const char *p;
Stefan Roese68d7d652009-03-19 13:30:36 +01001555 struct mtd_device *dev;
1556 int err = 1;
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001557 char tmp_parts[MTDPARTS_MAXLEN];
Stefan Roese68d7d652009-03-19 13:30:36 +01001558
Wolfgang Denke1d29502010-04-28 10:58:10 +02001559 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
Stefan Roese68d7d652009-03-19 13:30:36 +01001560
1561 /* delete all devices and partitions */
1562 if (mtd_devices_init() != 0) {
1563 printf("could not initialise device list\n");
1564 return err;
1565 }
1566
1567 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001568 p = getenv_mtdparts(tmp_parts);
Ladislav Michl06a040a2016-07-12 20:28:23 +02001569 if (!p)
1570 p = mtdparts;
1571
Stefan Roese68d7d652009-03-19 13:30:36 +01001572 if (strncmp(p, "mtdparts=", 9) != 0) {
1573 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1574 return err;
1575 }
1576 p += 9;
1577
Ladislav Michl06a040a2016-07-12 20:28:23 +02001578 while (*p != '\0') {
Stefan Roese68d7d652009-03-19 13:30:36 +01001579 err = 1;
1580 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1581 break;
1582
Wolfgang Denke1d29502010-04-28 10:58:10 +02001583 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01001584 dev->id->num, dev->id->mtd_id);
1585
1586 /* check if parsed device is already on the list */
1587 if (device_find(dev->id->type, dev->id->num) != NULL) {
1588 printf("device %s%d redefined, please correct mtdparts variable\n",
1589 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1590 break;
1591 }
1592
1593 list_add_tail(&dev->link, &devices);
1594 err = 0;
1595 }
Ladislav Michl06a040a2016-07-12 20:28:23 +02001596 if (err == 1)
Stefan Roese68d7d652009-03-19 13:30:36 +01001597 device_delall(&devices);
Stefan Roese68d7d652009-03-19 13:30:36 +01001598
Ladislav Michl06a040a2016-07-12 20:28:23 +02001599 return err;
Stefan Roese68d7d652009-03-19 13:30:36 +01001600}
1601
1602/**
1603 * Parse provided string describing mtdids mapping (see file header for mtdids
1604 * variable format). Allocate memory for each entry and add all found entries
1605 * to the global mtdids list.
1606 *
1607 * @param ids mapping string
1608 * @return 0 on success, 1 otherwise
1609 */
1610static int parse_mtdids(const char *const ids)
1611{
1612 const char *p = ids;
1613 const char *mtd_id;
1614 int mtd_id_len;
1615 struct mtdids *id;
1616 struct list_head *entry, *n;
1617 struct mtdids *id_tmp;
1618 u8 type, num;
Paul Burton39ac3442013-09-04 15:16:57 +01001619 u64 size;
Stefan Roese68d7d652009-03-19 13:30:36 +01001620 int ret = 1;
1621
Wolfgang Denke1d29502010-04-28 10:58:10 +02001622 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
Stefan Roese68d7d652009-03-19 13:30:36 +01001623
1624 /* clean global mtdids list */
1625 list_for_each_safe(entry, n, &mtdids) {
1626 id_tmp = list_entry(entry, struct mtdids, link);
Wolfgang Denke1d29502010-04-28 10:58:10 +02001627 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
Stefan Roese68d7d652009-03-19 13:30:36 +01001628 list_del(entry);
1629 free(id_tmp);
1630 }
1631 last_ids[0] = '\0';
1632 INIT_LIST_HEAD(&mtdids);
1633
1634 while(p && (*p != '\0')) {
1635
1636 ret = 1;
1637 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1638 if (mtd_id_parse(p, &p, &type, &num) != 0)
1639 break;
1640
1641 if (*p != '=') {
1642 printf("mtdids: incorrect <dev-num>\n");
1643 break;
1644 }
1645 p++;
1646
1647 /* check if requested device exists */
1648 if (mtd_device_validate(type, num, &size) != 0)
1649 return 1;
1650
1651 /* locate <mtd-id> */
1652 mtd_id = p;
1653 if ((p = strchr(mtd_id, ',')) != NULL) {
1654 mtd_id_len = p - mtd_id + 1;
1655 p++;
1656 } else {
1657 mtd_id_len = strlen(mtd_id) + 1;
1658 }
1659 if (mtd_id_len == 0) {
1660 printf("mtdids: no <mtd-id> identifier\n");
1661 break;
1662 }
1663
1664 /* check if this id is already on the list */
1665 int double_entry = 0;
1666 list_for_each(entry, &mtdids) {
1667 id_tmp = list_entry(entry, struct mtdids, link);
1668 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1669 double_entry = 1;
1670 break;
1671 }
1672 }
1673 if (double_entry) {
1674 printf("device id %s%d redefined, please correct mtdids variable\n",
1675 MTD_DEV_TYPE(type), num);
1676 break;
1677 }
1678
1679 /* allocate mtdids structure */
1680 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1681 printf("out of memory\n");
1682 break;
1683 }
1684 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1685 id->num = num;
1686 id->type = type;
1687 id->size = size;
1688 id->mtd_id = (char *)(id + 1);
1689 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1690 id->mtd_id[mtd_id_len - 1] = '\0';
1691 INIT_LIST_HEAD(&id->link);
1692
Paul Burton39ac3442013-09-04 15:16:57 +01001693 debug("+ id %s%d\t%16lld bytes\t%s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001694 MTD_DEV_TYPE(id->type), id->num,
1695 id->size, id->mtd_id);
1696
1697 list_add_tail(&id->link, &mtdids);
1698 ret = 0;
1699 }
1700 if (ret == 1) {
1701 /* clean mtdids list and free allocated memory */
1702 list_for_each_safe(entry, n, &mtdids) {
1703 id_tmp = list_entry(entry, struct mtdids, link);
1704 list_del(entry);
1705 free(id_tmp);
1706 }
1707 return 1;
1708 }
1709
1710 return 0;
1711}
1712
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001713
Stefan Roese68d7d652009-03-19 13:30:36 +01001714/**
1715 * Parse and initialize global mtdids mapping and create global
1716 * device/partition list.
1717 *
1718 * @return 0 on success, 1 otherwise
1719 */
1720int mtdparts_init(void)
1721{
1722 static int initialized = 0;
1723 const char *ids, *parts;
1724 const char *current_partition;
1725 int ids_changed;
1726 char tmp_ep[PARTITION_MAXLEN];
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001727 char tmp_parts[MTDPARTS_MAXLEN];
Stefan Roese68d7d652009-03-19 13:30:36 +01001728
Wolfgang Denke1d29502010-04-28 10:58:10 +02001729 debug("\n---mtdparts_init---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001730 if (!initialized) {
1731 INIT_LIST_HEAD(&mtdids);
1732 INIT_LIST_HEAD(&devices);
1733 memset(last_ids, 0, MTDIDS_MAXLEN);
1734 memset(last_parts, 0, MTDPARTS_MAXLEN);
1735 memset(last_partition, 0, PARTITION_MAXLEN);
Ladislav Michlaf324432016-07-12 20:28:26 +02001736#if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1737 board_mtdparts_default(&mtdids_default, &mtdparts_default);
1738#endif
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001739 use_defaults = 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01001740 initialized = 1;
1741 }
1742
1743 /* get variables */
1744 ids = getenv("mtdids");
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001745 parts = getenv_mtdparts(tmp_parts);
Stefan Roese68d7d652009-03-19 13:30:36 +01001746 current_partition = getenv("partition");
1747
1748 /* save it for later parsing, cannot rely on current partition pointer
1749 * as 'partition' variable may be updated during init */
1750 tmp_ep[0] = '\0';
1751 if (current_partition)
1752 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1753
Wolfgang Denke1d29502010-04-28 10:58:10 +02001754 debug("last_ids : %s\n", last_ids);
1755 debug("env_ids : %s\n", ids);
1756 debug("last_parts: %s\n", last_parts);
1757 debug("env_parts : %s\n\n", parts);
Stefan Roese68d7d652009-03-19 13:30:36 +01001758
Wolfgang Denke1d29502010-04-28 10:58:10 +02001759 debug("last_partition : %s\n", last_partition);
1760 debug("env_partition : %s\n", current_partition);
Stefan Roese68d7d652009-03-19 13:30:36 +01001761
Robert P. J. Day1cc0a9f2016-05-04 04:47:31 -04001762 /* if mtdids variable is empty try to use defaults */
Stefan Roese68d7d652009-03-19 13:30:36 +01001763 if (!ids) {
1764 if (mtdids_default) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001765 debug("mtdids variable not defined, using default\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001766 ids = mtdids_default;
1767 setenv("mtdids", (char *)ids);
1768 } else {
1769 printf("mtdids not defined, no default present\n");
1770 return 1;
1771 }
1772 }
1773 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1774 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1775 return 1;
1776 }
1777
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001778 /* use defaults when mtdparts variable is not defined
1779 * once mtdparts is saved environment, drop use_defaults flag */
1780 if (!parts) {
1781 if (mtdparts_default && use_defaults) {
1782 parts = mtdparts_default;
1783 if (setenv("mtdparts", (char *)parts) == 0)
1784 use_defaults = 0;
1785 } else
1786 printf("mtdparts variable not set, see 'help mtdparts'\n");
1787 }
Stefan Roese68d7d652009-03-19 13:30:36 +01001788
1789 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1790 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1791 return 1;
1792 }
1793
1794 /* check if we have already parsed those mtdids */
1795 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1796 ids_changed = 0;
1797 } else {
1798 ids_changed = 1;
1799
1800 if (parse_mtdids(ids) != 0) {
1801 mtd_devices_init();
1802 return 1;
1803 }
1804
1805 /* ok it's good, save new ids */
1806 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1807 }
1808
1809 /* parse partitions if either mtdparts or mtdids were updated */
1810 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1811 if (parse_mtdparts(parts) != 0)
1812 return 1;
1813
1814 if (list_empty(&devices)) {
1815 printf("mtdparts_init: no valid partitions\n");
1816 return 1;
1817 }
1818
1819 /* ok it's good, save new parts */
1820 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1821
1822 /* reset first partition from first dev from the list as current */
Stefan Roese76b58832009-05-16 12:04:22 +02001823 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1824 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +01001825 current_save();
1826
Wolfgang Denke1d29502010-04-28 10:58:10 +02001827 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001828 MTD_DEV_TYPE(current_mtd_dev->id->type),
1829 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001830 }
1831
1832 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1833 if (!parts && (last_parts[0] != '\0'))
1834 return mtd_devices_init();
1835
1836 /* do not process current partition if mtdparts variable is null */
1837 if (!parts)
1838 return 0;
1839
1840 /* is current partition set in environment? if so, use it */
1841 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1842 struct part_info *p;
1843 struct mtd_device *cdev;
1844 u8 pnum;
1845
Wolfgang Denke1d29502010-04-28 10:58:10 +02001846 debug("--- getting current partition: %s\n", tmp_ep);
Stefan Roese68d7d652009-03-19 13:30:36 +01001847
1848 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
Stefan Roese76b58832009-05-16 12:04:22 +02001849 current_mtd_dev = cdev;
1850 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001851 current_save();
1852 }
1853 } else if (getenv("partition") == NULL) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001854 debug("no partition variable set, setting...\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001855 current_save();
1856 }
1857
1858 return 0;
1859}
1860
1861/**
1862 * Return pointer to the partition of a requested number from a requested
1863 * device.
1864 *
1865 * @param dev device that is to be searched for a partition
1866 * @param part_num requested partition number
1867 * @return pointer to the part_info, NULL otherwise
1868 */
1869static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1870{
1871 struct list_head *entry;
1872 struct part_info *part;
1873 int num;
1874
1875 if (!dev)
1876 return NULL;
1877
Wolfgang Denke1d29502010-04-28 10:58:10 +02001878 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001879 part_num, MTD_DEV_TYPE(dev->id->type),
1880 dev->id->num, dev->id->mtd_id);
1881
1882 if (part_num >= dev->num_parts) {
1883 printf("invalid partition number %d for device %s%d (%s)\n",
1884 part_num, MTD_DEV_TYPE(dev->id->type),
1885 dev->id->num, dev->id->mtd_id);
1886 return NULL;
1887 }
1888
1889 /* locate partition number, return it */
1890 num = 0;
1891 list_for_each(entry, &dev->parts) {
1892 part = list_entry(entry, struct part_info, link);
1893
1894 if (part_num == num++) {
1895 return part;
1896 }
1897 }
1898
1899 return NULL;
1900}
1901
1902/***************************************************/
Bin Menga1875592016-02-05 19:30:11 -08001903/* U-Boot commands */
Stefan Roese68d7d652009-03-19 13:30:36 +01001904/***************************************************/
1905/* command line only */
1906/**
1907 * Routine implementing u-boot chpart command. Sets new current partition based
1908 * on the user supplied partition id. For partition id format see find_dev_and_part().
1909 *
1910 * @param cmdtp command internal data
1911 * @param flag command flag
1912 * @param argc number of arguments supplied to the command
1913 * @param argv arguments list
1914 * @return 0 on success, 1 otherwise
1915 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001916static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001917{
1918/* command line only */
1919 struct mtd_device *dev;
1920 struct part_info *part;
1921 u8 pnum;
1922
1923 if (mtdparts_init() !=0)
1924 return 1;
1925
1926 if (argc < 2) {
1927 printf("no partition id specified\n");
1928 return 1;
1929 }
1930
1931 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1932 return 1;
1933
Stefan Roese76b58832009-05-16 12:04:22 +02001934 current_mtd_dev = dev;
1935 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001936 current_save();
1937
1938 printf("partition changed to %s%d,%d\n",
1939 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1940
1941 return 0;
1942}
1943
1944/**
1945 * Routine implementing u-boot mtdparts command. Initialize/update default global
1946 * partition list and process user partition request (list, add, del).
1947 *
1948 * @param cmdtp command internal data
1949 * @param flag command flag
1950 * @param argc number of arguments supplied to the command
1951 * @param argv arguments list
1952 * @return 0 on success, 1 otherwise
1953 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001954static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1955 char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001956{
1957 if (argc == 2) {
1958 if (strcmp(argv[1], "default") == 0) {
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001959 setenv("mtdids", NULL);
1960 setenv("mtdparts", NULL);
Stefan Roese68d7d652009-03-19 13:30:36 +01001961 setenv("partition", NULL);
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001962 use_defaults = 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01001963
1964 mtdparts_init();
1965 return 0;
1966 } else if (strcmp(argv[1], "delall") == 0) {
1967 /* this may be the first run, initialize lists if needed */
1968 mtdparts_init();
1969
1970 setenv("mtdparts", NULL);
1971
1972 /* mtd_devices_init() calls current_save() */
1973 return mtd_devices_init();
1974 }
1975 }
1976
1977 /* make sure we are in sync with env variables */
1978 if (mtdparts_init() != 0)
1979 return 1;
1980
1981 if (argc == 1) {
1982 list_partitions();
1983 return 0;
1984 }
1985
1986 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
Ben Gardiner59a50d22010-08-31 17:48:04 -04001987 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
Stefan Roese68d7d652009-03-19 13:30:36 +01001988#define PART_ADD_DESC_MAXLEN 64
1989 char tmpbuf[PART_ADD_DESC_MAXLEN];
Ben Gardiner59a50d22010-08-31 17:48:04 -04001990#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1991 struct mtd_info *mtd;
1992 uint64_t next_offset;
1993#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01001994 u8 type, num, len;
1995 struct mtd_device *dev;
1996 struct mtd_device *dev_tmp;
1997 struct mtdids *id;
1998 struct part_info *p;
1999
2000 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
2001 return 1;
2002
2003 if ((id = id_find(type, num)) == NULL) {
2004 printf("no such device %s defined in mtdids variable\n", argv[2]);
2005 return 1;
2006 }
2007
2008 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
2009 len += strlen(argv[3]); /* size@offset */
2010 len += strlen(argv[4]) + 2; /* '(' name ')' */
2011 if (argv[5] && (strlen(argv[5]) == 2))
2012 len += 2; /* 'ro' */
2013
2014 if (len >= PART_ADD_DESC_MAXLEN) {
2015 printf("too long partition description\n");
2016 return 1;
2017 }
2018 sprintf(tmpbuf, "%s:%s(%s)%s",
2019 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
Wolfgang Denke1d29502010-04-28 10:58:10 +02002020 debug("add tmpbuf: %s\n", tmpbuf);
Stefan Roese68d7d652009-03-19 13:30:36 +01002021
2022 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2023 return 1;
2024
Wolfgang Denke1d29502010-04-28 10:58:10 +02002025 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01002026 dev->id->num, dev->id->mtd_id);
2027
Ben Gardiner59a50d22010-08-31 17:48:04 -04002028 p = list_entry(dev->parts.next, struct part_info, link);
2029
2030#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2031 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2032 return 1;
2033
2034 if (!strcmp(&argv[1][3], ".spread")) {
2035 spread_partition(mtd, p, &next_offset);
Steve Rae59441ac2016-06-29 13:50:59 -07002036 debug("increased %s to %llu bytes\n", p->name, p->size);
Ben Gardiner59a50d22010-08-31 17:48:04 -04002037 }
2038#endif
2039
2040 dev_tmp = device_find(dev->id->type, dev->id->num);
2041 if (dev_tmp == NULL) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002042 device_add(dev);
Ben Gardiner59a50d22010-08-31 17:48:04 -04002043 } else if (part_add(dev_tmp, p) != 0) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002044 /* merge new partition with existing ones*/
Ben Gardiner59a50d22010-08-31 17:48:04 -04002045 device_del(dev);
2046 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01002047 }
2048
2049 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00002050 printf("generated mtdparts too long, resetting to null\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01002051 return 1;
2052 }
2053
2054 return 0;
2055 }
2056
2057 /* mtdparts del part-id */
2058 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02002059 debug("del: part-id = %s\n", argv[2]);
Stefan Roese68d7d652009-03-19 13:30:36 +01002060
2061 return delete_partition(argv[2]);
2062 }
2063
Ben Gardinerca75b202010-08-31 17:48:03 -04002064#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2065 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2066 return spread_partitions();
2067#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2068
Simon Glass4c12eeb2011-12-10 08:44:01 +00002069 return CMD_RET_USAGE;
Stefan Roese68d7d652009-03-19 13:30:36 +01002070}
2071
2072/***************************************************/
2073U_BOOT_CMD(
2074 chpart, 2, 0, do_chpart,
2075 "change active partition",
2076 "part-id\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +02002077 " - change active partition (e.g. part-id = nand0,1)"
Stefan Roese68d7d652009-03-19 13:30:36 +01002078);
2079
Kim Phillips088f1b12012-10-29 13:34:31 +00002080#ifdef CONFIG_SYS_LONGHELP
2081static char mtdparts_help_text[] =
Stefan Roese68d7d652009-03-19 13:30:36 +01002082 "\n"
2083 " - list partition table\n"
2084 "mtdparts delall\n"
2085 " - delete all partitions\n"
2086 "mtdparts del part-id\n"
2087 " - delete partition (e.g. part-id = nand0,1)\n"
2088 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2089 " - add partition\n"
Ben Gardiner59a50d22010-08-31 17:48:04 -04002090#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2091 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2092 " - add partition, padding size by skipping bad blocks\n"
2093#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01002094 "mtdparts default\n"
Ben Gardinerca75b202010-08-31 17:48:03 -04002095 " - reset partition table to defaults\n"
2096#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2097 "mtdparts spread\n"
2098 " - adjust the sizes of the partitions so they are\n"
2099 " at least as big as the mtdparts variable specifies\n"
2100 " and they each start on a good block\n\n"
2101#else
2102 "\n"
2103#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
Stefan Roese68d7d652009-03-19 13:30:36 +01002104 "-----\n\n"
2105 "this command uses three environment variables:\n\n"
2106 "'partition' - keeps current partition identifier\n\n"
2107 "partition := <part-id>\n"
2108 "<part-id> := <dev-id>,part_num\n\n"
2109 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2110 "mtdids=<idmap>[,<idmap>,...]\n\n"
2111 "<idmap> := <dev-id>=<mtd-id>\n"
2112 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2113 "<dev-num> := mtd device number, 0...\n"
2114 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2115 "'mtdparts' - partition list\n\n"
2116 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2117 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2118 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2119 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2120 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2121 "<offset> := partition start offset within the device\n"
2122 "<name> := '(' NAME ')'\n"
Kim Phillips088f1b12012-10-29 13:34:31 +00002123 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2124#endif
2125
2126U_BOOT_CMD(
2127 mtdparts, 6, 0, do_mtdparts,
2128 "define flash/nand partitions", mtdparts_help_text
Stefan Roese68d7d652009-03-19 13:30:36 +01002129);
2130/***************************************************/