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68d7d651 SR |
1 | /* |
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 | * | |
18 | * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $ | |
19 | * Copyright 2002 SYSGO Real-Time Solutions GmbH | |
20 | * | |
21 | * See file CREDITS for list of people who contributed to this | |
22 | * project. | |
23 | * | |
24 | * This program is free software; you can redistribute it and/or | |
25 | * modify it under the terms of the GNU General Public License as | |
26 | * published by the Free Software Foundation; either version 2 of | |
27 | * the License, or (at your option) any later version. | |
28 | * | |
29 | * This program is distributed in the hope that it will be useful, | |
30 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
31 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
32 | * GNU General Public License for more details. | |
33 | * | |
34 | * You should have received a copy of the GNU General Public License | |
35 | * along with this program; if not, write to the Free Software | |
36 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
37 | * MA 02111-1307 USA | |
38 | */ | |
39 | ||
40 | /* | |
41 | * Three environment variables are used by the parsing routines: | |
42 | * | |
43 | * 'partition' - keeps current partition identifier | |
44 | * | |
45 | * partition := <part-id> | |
46 | * <part-id> := <dev-id>,part_num | |
47 | * | |
48 | * | |
49 | * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping | |
50 | * | |
51 | * mtdids=<idmap>[,<idmap>,...] | |
52 | * | |
53 | * <idmap> := <dev-id>=<mtd-id> | |
54 | * <dev-id> := 'nand'|'nor'|'onenand'<dev-num> | |
55 | * <dev-num> := mtd device number, 0... | |
56 | * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) | |
57 | * | |
58 | * | |
59 | * 'mtdparts' - partition list | |
60 | * | |
61 | * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...] | |
62 | * | |
63 | * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...] | |
64 | * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name) | |
65 | * <part-def> := <size>[@<offset>][<name>][<ro-flag>] | |
66 | * <size> := standard linux memsize OR '-' to denote all remaining space | |
67 | * <offset> := partition start offset within the device | |
68 | * <name> := '(' NAME ')' | |
69 | * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel) | |
70 | * | |
71 | * Notes: | |
72 | * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping | |
73 | * - if the above variables are not set defaults for a given target are used | |
74 | * | |
75 | * Examples: | |
76 | * | |
77 | * 1 NOR Flash, with 1 single writable partition: | |
78 | * mtdids=nor0=edb7312-nor | |
79 | * mtdparts=mtdparts=edb7312-nor:- | |
80 | * | |
81 | * 1 NOR Flash with 2 partitions, 1 NAND with one | |
82 | * mtdids=nor0=edb7312-nor,nand0=edb7312-nand | |
83 | * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home) | |
84 | * | |
85 | */ | |
86 | ||
68d7d651 SR |
87 | #include <common.h> |
88 | #include <command.h> | |
89 | #include <malloc.h> | |
b93b24bf | 90 | #include <jffs2/load_kernel.h> |
68d7d651 SR |
91 | #include <linux/list.h> |
92 | #include <linux/ctype.h> | |
864aa034 SR |
93 | #include <linux/err.h> |
94 | #include <linux/mtd/mtd.h> | |
68d7d651 SR |
95 | |
96 | #if defined(CONFIG_CMD_NAND) | |
97 | #ifdef CONFIG_NAND_LEGACY | |
98 | #include <linux/mtd/nand_legacy.h> | |
99 | #else /* !CONFIG_NAND_LEGACY */ | |
100 | #include <linux/mtd/nand.h> | |
101 | #include <nand.h> | |
102 | #endif /* !CONFIG_NAND_LEGACY */ | |
103 | #endif | |
104 | ||
105 | #if defined(CONFIG_CMD_ONENAND) | |
68d7d651 SR |
106 | #include <linux/mtd/onenand.h> |
107 | #include <onenand_uboot.h> | |
108 | #endif | |
109 | ||
110 | /* enable/disable debugging messages */ | |
111 | #define DEBUG_MTDPARTS | |
112 | #undef DEBUG_MTDPARTS | |
113 | ||
114 | #ifdef DEBUG_MTDPARTS | |
115 | # define DEBUGF(fmt, args...) printf(fmt ,##args) | |
116 | #else | |
117 | # define DEBUGF(fmt, args...) | |
118 | #endif | |
119 | ||
120 | /* special size referring to all the remaining space in a partition */ | |
121 | #define SIZE_REMAINING 0xFFFFFFFF | |
122 | ||
123 | /* special offset value, it is used when not provided by user | |
124 | * | |
125 | * this value is used temporarily during parsing, later such offests | |
126 | * are recalculated */ | |
127 | #define OFFSET_NOT_SPECIFIED 0xFFFFFFFF | |
128 | ||
129 | /* minimum partition size */ | |
130 | #define MIN_PART_SIZE 4096 | |
131 | ||
132 | /* this flag needs to be set in part_info struct mask_flags | |
133 | * field for read-only partitions */ | |
134 | #define MTD_WRITEABLE_CMD 1 | |
135 | ||
136 | /* default values for mtdids and mtdparts variables */ | |
137 | #if defined(MTDIDS_DEFAULT) | |
138 | static const char *const mtdids_default = MTDIDS_DEFAULT; | |
139 | #else | |
68d7d651 SR |
140 | static const char *const mtdids_default = NULL; |
141 | #endif | |
142 | ||
143 | #if defined(MTDPARTS_DEFAULT) | |
144 | static const char *const mtdparts_default = MTDPARTS_DEFAULT; | |
145 | #else | |
68d7d651 SR |
146 | static const char *const mtdparts_default = NULL; |
147 | #endif | |
148 | ||
149 | /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */ | |
150 | #define MTDIDS_MAXLEN 128 | |
151 | #define MTDPARTS_MAXLEN 512 | |
152 | #define PARTITION_MAXLEN 16 | |
153 | static char last_ids[MTDIDS_MAXLEN]; | |
154 | static char last_parts[MTDPARTS_MAXLEN]; | |
155 | static char last_partition[PARTITION_MAXLEN]; | |
156 | ||
157 | /* low level jffs2 cache cleaning routine */ | |
158 | extern void jffs2_free_cache(struct part_info *part); | |
159 | ||
160 | /* mtdids mapping list, filled by parse_ids() */ | |
161 | struct list_head mtdids; | |
162 | ||
163 | /* device/partition list, parse_cmdline() parses into here */ | |
164 | struct list_head devices; | |
165 | ||
166 | /* current active device and partition number */ | |
76b5883d SR |
167 | struct mtd_device *current_mtd_dev = NULL; |
168 | u8 current_mtd_partnum = 0; | |
68d7d651 SR |
169 | |
170 | static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num); | |
171 | ||
172 | /* command line only routines */ | |
173 | static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len); | |
174 | static int device_del(struct mtd_device *dev); | |
175 | ||
176 | /** | |
177 | * Parses a string into a number. The number stored at ptr is | |
178 | * potentially suffixed with K (for kilobytes, or 1024 bytes), | |
179 | * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or | |
180 | * 1073741824). If the number is suffixed with K, M, or G, then | |
181 | * the return value is the number multiplied by one kilobyte, one | |
182 | * megabyte, or one gigabyte, respectively. | |
183 | * | |
184 | * @param ptr where parse begins | |
185 | * @param retptr output pointer to next char after parse completes (output) | |
186 | * @return resulting unsigned int | |
187 | */ | |
188 | static unsigned long memsize_parse (const char *const ptr, const char **retptr) | |
189 | { | |
190 | unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0); | |
191 | ||
192 | switch (**retptr) { | |
193 | case 'G': | |
194 | case 'g': | |
195 | ret <<= 10; | |
196 | case 'M': | |
197 | case 'm': | |
198 | ret <<= 10; | |
199 | case 'K': | |
200 | case 'k': | |
201 | ret <<= 10; | |
202 | (*retptr)++; | |
203 | default: | |
204 | break; | |
205 | } | |
206 | ||
207 | return ret; | |
208 | } | |
209 | ||
210 | /** | |
211 | * Format string describing supplied size. This routine does the opposite job | |
212 | * to memsize_parse(). Size in bytes is converted to string and if possible | |
213 | * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix. | |
214 | * | |
215 | * Note, that this routine does not check for buffer overflow, it's the caller | |
216 | * who must assure enough space. | |
217 | * | |
218 | * @param buf output buffer | |
219 | * @param size size to be converted to string | |
220 | */ | |
221 | static void memsize_format(char *buf, u32 size) | |
222 | { | |
223 | #define SIZE_GB ((u32)1024*1024*1024) | |
224 | #define SIZE_MB ((u32)1024*1024) | |
225 | #define SIZE_KB ((u32)1024) | |
226 | ||
227 | if ((size % SIZE_GB) == 0) | |
228 | sprintf(buf, "%ug", size/SIZE_GB); | |
229 | else if ((size % SIZE_MB) == 0) | |
230 | sprintf(buf, "%um", size/SIZE_MB); | |
231 | else if (size % SIZE_KB == 0) | |
232 | sprintf(buf, "%uk", size/SIZE_KB); | |
233 | else | |
234 | sprintf(buf, "%u", size); | |
235 | } | |
236 | ||
237 | /** | |
238 | * This routine does global indexing of all partitions. Resulting index for | |
239 | * current partition is saved in 'mtddevnum'. Current partition name in | |
240 | * 'mtddevname'. | |
241 | */ | |
242 | static void index_partitions(void) | |
243 | { | |
244 | char buf[16]; | |
245 | u16 mtddevnum; | |
246 | struct part_info *part; | |
247 | struct list_head *dentry; | |
248 | struct mtd_device *dev; | |
249 | ||
250 | DEBUGF("--- index partitions ---\n"); | |
251 | ||
76b5883d | 252 | if (current_mtd_dev) { |
68d7d651 SR |
253 | mtddevnum = 0; |
254 | list_for_each(dentry, &devices) { | |
255 | dev = list_entry(dentry, struct mtd_device, link); | |
76b5883d SR |
256 | if (dev == current_mtd_dev) { |
257 | mtddevnum += current_mtd_partnum; | |
68d7d651 SR |
258 | sprintf(buf, "%d", mtddevnum); |
259 | setenv("mtddevnum", buf); | |
260 | break; | |
261 | } | |
262 | mtddevnum += dev->num_parts; | |
263 | } | |
264 | ||
76b5883d | 265 | part = mtd_part_info(current_mtd_dev, current_mtd_partnum); |
68d7d651 SR |
266 | setenv("mtddevname", part->name); |
267 | ||
268 | DEBUGF("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name); | |
269 | } else { | |
270 | setenv("mtddevnum", NULL); | |
271 | setenv("mtddevname", NULL); | |
272 | ||
273 | DEBUGF("=> mtddevnum NULL\n=> mtddevname NULL\n"); | |
274 | } | |
275 | } | |
276 | ||
277 | /** | |
278 | * Save current device and partition in environment variable 'partition'. | |
279 | */ | |
280 | static void current_save(void) | |
281 | { | |
282 | char buf[16]; | |
283 | ||
284 | DEBUGF("--- current_save ---\n"); | |
285 | ||
76b5883d SR |
286 | if (current_mtd_dev) { |
287 | sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type), | |
288 | current_mtd_dev->id->num, current_mtd_partnum); | |
68d7d651 SR |
289 | |
290 | setenv("partition", buf); | |
291 | strncpy(last_partition, buf, 16); | |
292 | ||
293 | DEBUGF("=> partition %s\n", buf); | |
294 | } else { | |
295 | setenv("partition", NULL); | |
296 | last_partition[0] = '\0'; | |
297 | ||
298 | DEBUGF("=> partition NULL\n"); | |
299 | } | |
300 | index_partitions(); | |
301 | } | |
302 | ||
303 | /** | |
864aa034 SR |
304 | * Performs sanity check for supplied flash partition. |
305 | * Table of existing MTD flash devices is searched and partition device | |
306 | * is located. Alignment with the granularity of nand erasesize is verified. | |
68d7d651 SR |
307 | * |
308 | * @param id of the parent device | |
309 | * @param part partition to validate | |
310 | * @return 0 if partition is valid, 1 otherwise | |
311 | */ | |
864aa034 | 312 | static int part_validate_eraseblock(struct mtdids *id, struct part_info *part) |
68d7d651 | 313 | { |
864aa034 SR |
314 | struct mtd_info *mtd; |
315 | char mtd_dev[16]; | |
316 | int i, j; | |
317 | ulong start; | |
318 | ||
319 | sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(id->type), id->num); | |
320 | mtd = get_mtd_device_nm(mtd_dev); | |
321 | if (IS_ERR(mtd)) { | |
322 | printf("Partition %s not found on device %s!\n", part->name, mtd_dev); | |
68d7d651 SR |
323 | return 1; |
324 | } | |
325 | ||
864aa034 | 326 | part->sector_size = mtd->erasesize; |
68d7d651 | 327 | |
864aa034 SR |
328 | if (!mtd->numeraseregions) { |
329 | /* | |
330 | * Only one eraseregion (NAND, OneNAND or uniform NOR), | |
331 | * checking for alignment is easy here | |
332 | */ | |
333 | if ((unsigned long)part->offset % mtd->erasesize) { | |
334 | printf("%s%d: partition (%s) start offset" | |
335 | "alignment incorrect\n", | |
336 | MTD_DEV_TYPE(id->type), id->num, part->name); | |
337 | return 1; | |
338 | } | |
68d7d651 | 339 | |
864aa034 SR |
340 | if (part->size % mtd->erasesize) { |
341 | printf("%s%d: partition (%s) size alignment incorrect\n", | |
342 | MTD_DEV_TYPE(id->type), id->num, part->name); | |
343 | return 1; | |
344 | } | |
345 | } else { | |
346 | /* | |
347 | * Multiple eraseregions (non-uniform NOR), | |
348 | * checking for alignment is more complex here | |
349 | */ | |
350 | ||
351 | /* Check start alignment */ | |
352 | for (i = 0; i < mtd->numeraseregions; i++) { | |
353 | start = mtd->eraseregions[i].offset; | |
354 | for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { | |
355 | if (part->offset == start) | |
356 | goto start_ok; | |
357 | start += mtd->eraseregions[i].erasesize; | |
358 | } | |
359 | } | |
68d7d651 | 360 | |
68d7d651 | 361 | printf("%s%d: partition (%s) start offset alignment incorrect\n", |
864aa034 | 362 | MTD_DEV_TYPE(id->type), id->num, part->name); |
68d7d651 | 363 | return 1; |
68d7d651 | 364 | |
864aa034 | 365 | start_ok: |
68d7d651 | 366 | |
864aa034 SR |
367 | /* Check end/size alignment */ |
368 | for (i = 0; i < mtd->numeraseregions; i++) { | |
369 | start = mtd->eraseregions[i].offset; | |
370 | for (j = 0; j < mtd->eraseregions[i].numblocks; j++) { | |
371 | if ((part->offset + part->size) == start) | |
372 | goto end_ok; | |
373 | start += mtd->eraseregions[i].erasesize; | |
374 | } | |
375 | } | |
376 | /* Check last sector alignment */ | |
377 | if ((part->offset + part->size) == start) | |
378 | goto end_ok; | |
68d7d651 | 379 | |
68d7d651 | 380 | printf("%s%d: partition (%s) size alignment incorrect\n", |
864aa034 | 381 | MTD_DEV_TYPE(id->type), id->num, part->name); |
68d7d651 | 382 | return 1; |
864aa034 SR |
383 | |
384 | end_ok: | |
385 | return 0; | |
68d7d651 SR |
386 | } |
387 | ||
388 | return 0; | |
68d7d651 SR |
389 | } |
390 | ||
391 | ||
392 | /** | |
393 | * Performs sanity check for supplied partition. Offset and size are verified | |
394 | * to be within valid range. Partition type is checked and either | |
395 | * parts_validate_nor() or parts_validate_nand() is called with the argument | |
396 | * of part. | |
397 | * | |
398 | * @param id of the parent device | |
399 | * @param part partition to validate | |
400 | * @return 0 if partition is valid, 1 otherwise | |
401 | */ | |
402 | static int part_validate(struct mtdids *id, struct part_info *part) | |
403 | { | |
404 | if (part->size == SIZE_REMAINING) | |
405 | part->size = id->size - part->offset; | |
406 | ||
407 | if (part->offset > id->size) { | |
408 | printf("%s: offset %08x beyond flash size %08x\n", | |
409 | id->mtd_id, part->offset, id->size); | |
410 | return 1; | |
411 | } | |
412 | ||
413 | if ((part->offset + part->size) <= part->offset) { | |
414 | printf("%s%d: partition (%s) size too big\n", | |
415 | MTD_DEV_TYPE(id->type), id->num, part->name); | |
416 | return 1; | |
417 | } | |
418 | ||
419 | if (part->offset + part->size > id->size) { | |
420 | printf("%s: partitioning exceeds flash size\n", id->mtd_id); | |
421 | return 1; | |
422 | } | |
423 | ||
864aa034 SR |
424 | /* |
425 | * Now we need to check if the partition starts and ends on | |
426 | * sector (eraseblock) regions | |
427 | */ | |
428 | return part_validate_eraseblock(id, part); | |
68d7d651 SR |
429 | } |
430 | ||
431 | /** | |
432 | * Delete selected partition from the partion list of the specified device. | |
433 | * | |
434 | * @param dev device to delete partition from | |
435 | * @param part partition to delete | |
436 | * @return 0 on success, 1 otherwise | |
437 | */ | |
438 | static int part_del(struct mtd_device *dev, struct part_info *part) | |
439 | { | |
440 | u8 current_save_needed = 0; | |
441 | ||
442 | /* if there is only one partition, remove whole device */ | |
443 | if (dev->num_parts == 1) | |
444 | return device_del(dev); | |
445 | ||
446 | /* otherwise just delete this partition */ | |
447 | ||
76b5883d | 448 | if (dev == current_mtd_dev) { |
68d7d651 SR |
449 | /* we are modyfing partitions for the current device, |
450 | * update current */ | |
451 | struct part_info *curr_pi; | |
76b5883d | 452 | curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum); |
68d7d651 SR |
453 | |
454 | if (curr_pi) { | |
455 | if (curr_pi == part) { | |
456 | printf("current partition deleted, resetting current to 0\n"); | |
76b5883d | 457 | current_mtd_partnum = 0; |
68d7d651 | 458 | } else if (part->offset <= curr_pi->offset) { |
76b5883d | 459 | current_mtd_partnum--; |
68d7d651 SR |
460 | } |
461 | current_save_needed = 1; | |
462 | } | |
463 | } | |
464 | ||
465 | #ifdef CONFIG_NAND_LEGACY | |
466 | jffs2_free_cache(part); | |
467 | #endif | |
468 | list_del(&part->link); | |
469 | free(part); | |
470 | dev->num_parts--; | |
471 | ||
472 | if (current_save_needed > 0) | |
473 | current_save(); | |
474 | else | |
475 | index_partitions(); | |
476 | ||
477 | return 0; | |
478 | } | |
479 | ||
480 | /** | |
481 | * Delete all partitions from parts head list, free memory. | |
482 | * | |
483 | * @param head list of partitions to delete | |
484 | */ | |
485 | static void part_delall(struct list_head *head) | |
486 | { | |
487 | struct list_head *entry, *n; | |
488 | struct part_info *part_tmp; | |
489 | ||
490 | /* clean tmp_list and free allocated memory */ | |
491 | list_for_each_safe(entry, n, head) { | |
492 | part_tmp = list_entry(entry, struct part_info, link); | |
493 | ||
494 | #ifdef CONFIG_NAND_LEGACY | |
495 | jffs2_free_cache(part_tmp); | |
496 | #endif | |
497 | list_del(entry); | |
498 | free(part_tmp); | |
499 | } | |
500 | } | |
501 | ||
502 | /** | |
503 | * Add new partition to the supplied partition list. Make sure partitions are | |
504 | * sorted by offset in ascending order. | |
505 | * | |
506 | * @param head list this partition is to be added to | |
507 | * @param new partition to be added | |
508 | */ | |
509 | static int part_sort_add(struct mtd_device *dev, struct part_info *part) | |
510 | { | |
511 | struct list_head *entry; | |
512 | struct part_info *new_pi, *curr_pi; | |
513 | ||
514 | /* link partition to parrent dev */ | |
515 | part->dev = dev; | |
516 | ||
517 | if (list_empty(&dev->parts)) { | |
518 | DEBUGF("part_sort_add: list empty\n"); | |
519 | list_add(&part->link, &dev->parts); | |
520 | dev->num_parts++; | |
521 | index_partitions(); | |
522 | return 0; | |
523 | } | |
524 | ||
525 | new_pi = list_entry(&part->link, struct part_info, link); | |
526 | ||
527 | /* get current partition info if we are updating current device */ | |
528 | curr_pi = NULL; | |
76b5883d SR |
529 | if (dev == current_mtd_dev) |
530 | curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum); | |
68d7d651 SR |
531 | |
532 | list_for_each(entry, &dev->parts) { | |
533 | struct part_info *pi; | |
534 | ||
535 | pi = list_entry(entry, struct part_info, link); | |
536 | ||
537 | /* be compliant with kernel cmdline, allow only one partition at offset zero */ | |
538 | if ((new_pi->offset == pi->offset) && (pi->offset == 0)) { | |
539 | printf("cannot add second partition at offset 0\n"); | |
540 | return 1; | |
541 | } | |
542 | ||
543 | if (new_pi->offset <= pi->offset) { | |
544 | list_add_tail(&part->link, entry); | |
545 | dev->num_parts++; | |
546 | ||
547 | if (curr_pi && (pi->offset <= curr_pi->offset)) { | |
548 | /* we are modyfing partitions for the current | |
549 | * device, update current */ | |
76b5883d | 550 | current_mtd_partnum++; |
68d7d651 SR |
551 | current_save(); |
552 | } else { | |
553 | index_partitions(); | |
554 | } | |
555 | return 0; | |
556 | } | |
557 | } | |
558 | ||
559 | list_add_tail(&part->link, &dev->parts); | |
560 | dev->num_parts++; | |
561 | index_partitions(); | |
562 | return 0; | |
563 | } | |
564 | ||
565 | /** | |
566 | * Add provided partition to the partition list of a given device. | |
567 | * | |
568 | * @param dev device to which partition is added | |
569 | * @param part partition to be added | |
570 | * @return 0 on success, 1 otherwise | |
571 | */ | |
572 | static int part_add(struct mtd_device *dev, struct part_info *part) | |
573 | { | |
574 | /* verify alignment and size */ | |
575 | if (part_validate(dev->id, part) != 0) | |
576 | return 1; | |
577 | ||
578 | /* partition is ok, add it to the list */ | |
579 | if (part_sort_add(dev, part) != 0) | |
580 | return 1; | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
585 | /** | |
586 | * Parse one partition definition, allocate memory and return pointer to this | |
587 | * location in retpart. | |
588 | * | |
589 | * @param partdef pointer to the partition definition string i.e. <part-def> | |
590 | * @param ret output pointer to next char after parse completes (output) | |
591 | * @param retpart pointer to the allocated partition (output) | |
592 | * @return 0 on success, 1 otherwise | |
593 | */ | |
594 | static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart) | |
595 | { | |
596 | struct part_info *part; | |
597 | unsigned long size; | |
598 | unsigned long offset; | |
599 | const char *name; | |
600 | int name_len; | |
601 | unsigned int mask_flags; | |
602 | const char *p; | |
603 | ||
604 | p = partdef; | |
605 | *retpart = NULL; | |
606 | *ret = NULL; | |
607 | ||
608 | /* fetch the partition size */ | |
609 | if (*p == '-') { | |
610 | /* assign all remaining space to this partition */ | |
611 | DEBUGF("'-': remaining size assigned\n"); | |
612 | size = SIZE_REMAINING; | |
613 | p++; | |
614 | } else { | |
615 | size = memsize_parse(p, &p); | |
616 | if (size < MIN_PART_SIZE) { | |
617 | printf("partition size too small (%lx)\n", size); | |
618 | return 1; | |
619 | } | |
620 | } | |
621 | ||
622 | /* check for offset */ | |
623 | offset = OFFSET_NOT_SPECIFIED; | |
624 | if (*p == '@') { | |
625 | p++; | |
626 | offset = memsize_parse(p, &p); | |
627 | } | |
628 | ||
629 | /* now look for the name */ | |
630 | if (*p == '(') { | |
631 | name = ++p; | |
632 | if ((p = strchr(name, ')')) == NULL) { | |
633 | printf("no closing ) found in partition name\n"); | |
634 | return 1; | |
635 | } | |
636 | name_len = p - name + 1; | |
637 | if ((name_len - 1) == 0) { | |
638 | printf("empty partition name\n"); | |
639 | return 1; | |
640 | } | |
641 | p++; | |
642 | } else { | |
643 | /* 0x00000000@0x00000000 */ | |
644 | name_len = 22; | |
645 | name = NULL; | |
646 | } | |
647 | ||
648 | /* test for options */ | |
649 | mask_flags = 0; | |
650 | if (strncmp(p, "ro", 2) == 0) { | |
651 | mask_flags |= MTD_WRITEABLE_CMD; | |
652 | p += 2; | |
653 | } | |
654 | ||
655 | /* check for next partition definition */ | |
656 | if (*p == ',') { | |
657 | if (size == SIZE_REMAINING) { | |
658 | *ret = NULL; | |
659 | printf("no partitions allowed after a fill-up partition\n"); | |
660 | return 1; | |
661 | } | |
662 | *ret = ++p; | |
663 | } else if ((*p == ';') || (*p == '\0')) { | |
664 | *ret = p; | |
665 | } else { | |
666 | printf("unexpected character '%c' at the end of partition\n", *p); | |
667 | *ret = NULL; | |
668 | return 1; | |
669 | } | |
670 | ||
671 | /* allocate memory */ | |
672 | part = (struct part_info *)malloc(sizeof(struct part_info) + name_len); | |
673 | if (!part) { | |
674 | printf("out of memory\n"); | |
675 | return 1; | |
676 | } | |
677 | memset(part, 0, sizeof(struct part_info) + name_len); | |
678 | part->size = size; | |
679 | part->offset = offset; | |
680 | part->mask_flags = mask_flags; | |
681 | part->name = (char *)(part + 1); | |
682 | ||
683 | if (name) { | |
684 | /* copy user provided name */ | |
685 | strncpy(part->name, name, name_len - 1); | |
686 | part->auto_name = 0; | |
687 | } else { | |
688 | /* auto generated name in form of size@offset */ | |
689 | sprintf(part->name, "0x%08lx@0x%08lx", size, offset); | |
690 | part->auto_name = 1; | |
691 | } | |
692 | ||
693 | part->name[name_len - 1] = '\0'; | |
694 | INIT_LIST_HEAD(&part->link); | |
695 | ||
696 | DEBUGF("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n", | |
697 | part->name, part->size, | |
698 | part->offset, part->mask_flags); | |
699 | ||
700 | *retpart = part; | |
701 | return 0; | |
702 | } | |
703 | ||
704 | /** | |
705 | * Check device number to be within valid range for given device type. | |
706 | * | |
707 | * @param dev device to validate | |
708 | * @return 0 if device is valid, 1 otherwise | |
709 | */ | |
710 | int mtd_device_validate(u8 type, u8 num, u32 *size) | |
711 | { | |
864aa034 SR |
712 | struct mtd_info *mtd; |
713 | char mtd_dev[16]; | |
68d7d651 | 714 | |
864aa034 SR |
715 | sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num); |
716 | mtd = get_mtd_device_nm(mtd_dev); | |
717 | if (IS_ERR(mtd)) { | |
718 | printf("Device %s not found!\n", mtd_dev); | |
719 | return 1; | |
720 | } | |
68d7d651 | 721 | |
864aa034 | 722 | *size = mtd->size; |
68d7d651 | 723 | |
864aa034 | 724 | return 0; |
68d7d651 SR |
725 | } |
726 | ||
727 | /** | |
728 | * Delete all mtd devices from a supplied devices list, free memory allocated for | |
729 | * each device and delete all device partitions. | |
730 | * | |
731 | * @return 0 on success, 1 otherwise | |
732 | */ | |
733 | static int device_delall(struct list_head *head) | |
734 | { | |
735 | struct list_head *entry, *n; | |
736 | struct mtd_device *dev_tmp; | |
737 | ||
738 | /* clean devices list */ | |
739 | list_for_each_safe(entry, n, head) { | |
740 | dev_tmp = list_entry(entry, struct mtd_device, link); | |
741 | list_del(entry); | |
742 | part_delall(&dev_tmp->parts); | |
743 | free(dev_tmp); | |
744 | } | |
745 | INIT_LIST_HEAD(&devices); | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | /** | |
751 | * If provided device exists it's partitions are deleted, device is removed | |
752 | * from device list and device memory is freed. | |
753 | * | |
754 | * @param dev device to be deleted | |
755 | * @return 0 on success, 1 otherwise | |
756 | */ | |
757 | static int device_del(struct mtd_device *dev) | |
758 | { | |
759 | part_delall(&dev->parts); | |
760 | list_del(&dev->link); | |
761 | free(dev); | |
762 | ||
76b5883d | 763 | if (dev == current_mtd_dev) { |
68d7d651 SR |
764 | /* we just deleted current device */ |
765 | if (list_empty(&devices)) { | |
76b5883d | 766 | current_mtd_dev = NULL; |
68d7d651 SR |
767 | } else { |
768 | /* reset first partition from first dev from the | |
769 | * devices list as current */ | |
76b5883d SR |
770 | current_mtd_dev = list_entry(devices.next, struct mtd_device, link); |
771 | current_mtd_partnum = 0; | |
68d7d651 SR |
772 | } |
773 | current_save(); | |
774 | return 0; | |
775 | } | |
776 | ||
777 | index_partitions(); | |
778 | return 0; | |
779 | } | |
780 | ||
781 | /** | |
782 | * Search global device list and return pointer to the device of type and num | |
783 | * specified. | |
784 | * | |
785 | * @param type device type | |
786 | * @param num device number | |
787 | * @return NULL if requested device does not exist | |
788 | */ | |
789 | static struct mtd_device* device_find(u8 type, u8 num) | |
790 | { | |
791 | struct list_head *entry; | |
792 | struct mtd_device *dev_tmp; | |
793 | ||
794 | list_for_each(entry, &devices) { | |
795 | dev_tmp = list_entry(entry, struct mtd_device, link); | |
796 | ||
797 | if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num)) | |
798 | return dev_tmp; | |
799 | } | |
800 | ||
801 | return NULL; | |
802 | } | |
803 | ||
804 | /** | |
805 | * Add specified device to the global device list. | |
806 | * | |
807 | * @param dev device to be added | |
808 | */ | |
809 | static void device_add(struct mtd_device *dev) | |
810 | { | |
811 | u8 current_save_needed = 0; | |
812 | ||
813 | if (list_empty(&devices)) { | |
76b5883d SR |
814 | current_mtd_dev = dev; |
815 | current_mtd_partnum = 0; | |
68d7d651 SR |
816 | current_save_needed = 1; |
817 | } | |
818 | ||
819 | list_add_tail(&dev->link, &devices); | |
820 | ||
821 | if (current_save_needed > 0) | |
822 | current_save(); | |
823 | else | |
824 | index_partitions(); | |
825 | } | |
826 | ||
827 | /** | |
828 | * Parse device type, name and mtd-id. If syntax is ok allocate memory and | |
829 | * return pointer to the device structure. | |
830 | * | |
831 | * @param mtd_dev pointer to the device definition string i.e. <mtd-dev> | |
832 | * @param ret output pointer to next char after parse completes (output) | |
833 | * @param retdev pointer to the allocated device (output) | |
834 | * @return 0 on success, 1 otherwise | |
835 | */ | |
836 | static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev) | |
837 | { | |
838 | struct mtd_device *dev; | |
839 | struct part_info *part; | |
840 | struct mtdids *id; | |
841 | const char *mtd_id; | |
842 | unsigned int mtd_id_len; | |
843 | const char *p, *pend; | |
844 | LIST_HEAD(tmp_list); | |
845 | struct list_head *entry, *n; | |
846 | u16 num_parts; | |
847 | u32 offset; | |
848 | int err = 1; | |
849 | ||
850 | p = mtd_dev; | |
851 | *retdev = NULL; | |
852 | *ret = NULL; | |
853 | ||
854 | DEBUGF("===device_parse===\n"); | |
855 | ||
856 | /* fetch <mtd-id> */ | |
857 | mtd_id = p; | |
858 | if (!(p = strchr(mtd_id, ':'))) { | |
859 | printf("no <mtd-id> identifier\n"); | |
860 | return 1; | |
861 | } | |
862 | mtd_id_len = p - mtd_id + 1; | |
863 | p++; | |
864 | ||
865 | /* verify if we have a valid device specified */ | |
866 | if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) { | |
867 | printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id); | |
868 | return 1; | |
869 | } | |
870 | ||
871 | DEBUGF("dev type = %d (%s), dev num = %d, mtd-id = %s\n", | |
872 | id->type, MTD_DEV_TYPE(id->type), | |
873 | id->num, id->mtd_id); | |
874 | pend = strchr(p, ';'); | |
875 | DEBUGF("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p); | |
876 | ||
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 | ||
921 | DEBUGF("\ntotal partitions: %d\n", num_parts); | |
922 | ||
923 | /* check for next device presence */ | |
924 | if (p) { | |
925 | if (*p == ';') { | |
926 | *ret = ++p; | |
927 | } else if (*p == '\0') { | |
928 | *ret = p; | |
929 | } else { | |
930 | printf("unexpected character '%c' at the end of device\n", *p); | |
931 | *ret = NULL; | |
932 | return 1; | |
933 | } | |
934 | } | |
935 | ||
936 | /* allocate memory for mtd_device structure */ | |
937 | if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) { | |
938 | printf("out of memory\n"); | |
939 | return 1; | |
940 | } | |
941 | memset(dev, 0, sizeof(struct mtd_device)); | |
942 | dev->id = id; | |
943 | dev->num_parts = 0; /* part_sort_add increments num_parts */ | |
944 | INIT_LIST_HEAD(&dev->parts); | |
945 | INIT_LIST_HEAD(&dev->link); | |
946 | ||
947 | /* move partitions from tmp_list to dev->parts */ | |
948 | list_for_each_safe(entry, n, &tmp_list) { | |
949 | part = list_entry(entry, struct part_info, link); | |
950 | list_del(entry); | |
951 | if (part_sort_add(dev, part) != 0) { | |
952 | device_del(dev); | |
953 | return 1; | |
954 | } | |
955 | } | |
956 | ||
957 | *retdev = dev; | |
958 | ||
959 | DEBUGF("===\n\n"); | |
960 | return 0; | |
961 | } | |
962 | ||
963 | /** | |
964 | * Initialize global device list. | |
965 | * | |
966 | * @return 0 on success, 1 otherwise | |
967 | */ | |
968 | static int mtd_devices_init(void) | |
969 | { | |
970 | last_parts[0] = '\0'; | |
76b5883d | 971 | current_mtd_dev = NULL; |
68d7d651 SR |
972 | current_save(); |
973 | ||
974 | return device_delall(&devices); | |
975 | } | |
976 | ||
977 | /* | |
978 | * Search global mtdids list and find id of requested type and number. | |
979 | * | |
980 | * @return pointer to the id if it exists, NULL otherwise | |
981 | */ | |
982 | static struct mtdids* id_find(u8 type, u8 num) | |
983 | { | |
984 | struct list_head *entry; | |
985 | struct mtdids *id; | |
986 | ||
987 | list_for_each(entry, &mtdids) { | |
988 | id = list_entry(entry, struct mtdids, link); | |
989 | ||
990 | if ((id->type == type) && (id->num == num)) | |
991 | return id; | |
992 | } | |
993 | ||
994 | return NULL; | |
995 | } | |
996 | ||
997 | /** | |
998 | * Search global mtdids list and find id of a requested mtd_id. | |
999 | * | |
1000 | * Note: first argument is not null terminated. | |
1001 | * | |
1002 | * @param mtd_id string containing requested mtd_id | |
1003 | * @param mtd_id_len length of supplied mtd_id | |
1004 | * @return pointer to the id if it exists, NULL otherwise | |
1005 | */ | |
1006 | static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len) | |
1007 | { | |
1008 | struct list_head *entry; | |
1009 | struct mtdids *id; | |
1010 | ||
1011 | DEBUGF("--- id_find_by_mtd_id: '%.*s' (len = %d)\n", | |
1012 | mtd_id_len, mtd_id, mtd_id_len); | |
1013 | ||
1014 | list_for_each(entry, &mtdids) { | |
1015 | id = list_entry(entry, struct mtdids, link); | |
1016 | ||
1017 | DEBUGF("entry: '%s' (len = %d)\n", | |
1018 | id->mtd_id, strlen(id->mtd_id)); | |
1019 | ||
1020 | if (mtd_id_len != strlen(id->mtd_id)) | |
1021 | continue; | |
1022 | if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0) | |
1023 | return id; | |
1024 | } | |
1025 | ||
1026 | return NULL; | |
1027 | } | |
1028 | ||
1029 | /** | |
1030 | * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>, | |
1031 | * return device type and number. | |
1032 | * | |
1033 | * @param id string describing device id | |
1034 | * @param ret_id output pointer to next char after parse completes (output) | |
1035 | * @param dev_type parsed device type (output) | |
1036 | * @param dev_num parsed device number (output) | |
1037 | * @return 0 on success, 1 otherwise | |
1038 | */ | |
1039 | int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num) | |
1040 | { | |
1041 | const char *p = id; | |
1042 | ||
1043 | *dev_type = 0; | |
1044 | if (strncmp(p, "nand", 4) == 0) { | |
1045 | *dev_type = MTD_DEV_TYPE_NAND; | |
1046 | p += 4; | |
1047 | } else if (strncmp(p, "nor", 3) == 0) { | |
1048 | *dev_type = MTD_DEV_TYPE_NOR; | |
1049 | p += 3; | |
1050 | } else if (strncmp(p, "onenand", 7) == 0) { | |
1051 | *dev_type = MTD_DEV_TYPE_ONENAND; | |
1052 | p += 7; | |
1053 | } else { | |
1054 | printf("incorrect device type in %s\n", id); | |
1055 | return 1; | |
1056 | } | |
1057 | ||
1058 | if (!isdigit(*p)) { | |
1059 | printf("incorrect device number in %s\n", id); | |
1060 | return 1; | |
1061 | } | |
1062 | ||
1063 | *dev_num = simple_strtoul(p, (char **)&p, 0); | |
1064 | if (ret_id) | |
1065 | *ret_id = p; | |
1066 | return 0; | |
1067 | } | |
1068 | ||
1069 | /** | |
1070 | * Process all devices and generate corresponding mtdparts string describing | |
1071 | * all partitions on all devices. | |
1072 | * | |
1073 | * @param buf output buffer holding generated mtdparts string (output) | |
1074 | * @param buflen buffer size | |
1075 | * @return 0 on success, 1 otherwise | |
1076 | */ | |
1077 | static int generate_mtdparts(char *buf, u32 buflen) | |
1078 | { | |
1079 | struct list_head *pentry, *dentry; | |
1080 | struct mtd_device *dev; | |
1081 | struct part_info *part, *prev_part; | |
1082 | char *p = buf; | |
1083 | char tmpbuf[32]; | |
1084 | u32 size, offset, len, part_cnt; | |
1085 | u32 maxlen = buflen - 1; | |
1086 | ||
1087 | DEBUGF("--- generate_mtdparts ---\n"); | |
1088 | ||
1089 | if (list_empty(&devices)) { | |
1090 | buf[0] = '\0'; | |
1091 | return 0; | |
1092 | } | |
1093 | ||
1094 | sprintf(p, "mtdparts="); | |
1095 | p += 9; | |
1096 | ||
1097 | list_for_each(dentry, &devices) { | |
1098 | dev = list_entry(dentry, struct mtd_device, link); | |
1099 | ||
1100 | /* copy mtd_id */ | |
1101 | len = strlen(dev->id->mtd_id) + 1; | |
1102 | if (len > maxlen) | |
1103 | goto cleanup; | |
1104 | memcpy(p, dev->id->mtd_id, len - 1); | |
1105 | p += len - 1; | |
1106 | *(p++) = ':'; | |
1107 | maxlen -= len; | |
1108 | ||
1109 | /* format partitions */ | |
1110 | prev_part = NULL; | |
1111 | part_cnt = 0; | |
1112 | list_for_each(pentry, &dev->parts) { | |
1113 | part = list_entry(pentry, struct part_info, link); | |
1114 | size = part->size; | |
1115 | offset = part->offset; | |
1116 | part_cnt++; | |
1117 | ||
1118 | /* partition size */ | |
1119 | memsize_format(tmpbuf, size); | |
1120 | len = strlen(tmpbuf); | |
1121 | if (len > maxlen) | |
1122 | goto cleanup; | |
1123 | memcpy(p, tmpbuf, len); | |
1124 | p += len; | |
1125 | maxlen -= len; | |
1126 | ||
1127 | ||
1128 | /* add offset only when there is a gap between | |
1129 | * partitions */ | |
1130 | if ((!prev_part && (offset != 0)) || | |
1131 | (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) { | |
1132 | ||
1133 | memsize_format(tmpbuf, offset); | |
1134 | len = strlen(tmpbuf) + 1; | |
1135 | if (len > maxlen) | |
1136 | goto cleanup; | |
1137 | *(p++) = '@'; | |
1138 | memcpy(p, tmpbuf, len - 1); | |
1139 | p += len - 1; | |
1140 | maxlen -= len; | |
1141 | } | |
1142 | ||
1143 | /* copy name only if user supplied */ | |
1144 | if(!part->auto_name) { | |
1145 | len = strlen(part->name) + 2; | |
1146 | if (len > maxlen) | |
1147 | goto cleanup; | |
1148 | ||
1149 | *(p++) = '('; | |
1150 | memcpy(p, part->name, len - 2); | |
1151 | p += len - 2; | |
1152 | *(p++) = ')'; | |
1153 | maxlen -= len; | |
1154 | } | |
1155 | ||
1156 | /* ro mask flag */ | |
1157 | if (part->mask_flags && MTD_WRITEABLE_CMD) { | |
1158 | len = 2; | |
1159 | if (len > maxlen) | |
1160 | goto cleanup; | |
1161 | *(p++) = 'r'; | |
1162 | *(p++) = 'o'; | |
1163 | maxlen -= 2; | |
1164 | } | |
1165 | ||
1166 | /* print ',' separator if there are other partitions | |
1167 | * following */ | |
1168 | if (dev->num_parts > part_cnt) { | |
1169 | if (1 > maxlen) | |
1170 | goto cleanup; | |
1171 | *(p++) = ','; | |
1172 | maxlen--; | |
1173 | } | |
1174 | prev_part = part; | |
1175 | } | |
1176 | /* print ';' separator if there are other devices following */ | |
1177 | if (dentry->next != &devices) { | |
1178 | if (1 > maxlen) | |
1179 | goto cleanup; | |
1180 | *(p++) = ';'; | |
1181 | maxlen--; | |
1182 | } | |
1183 | } | |
1184 | ||
1185 | /* we still have at least one char left, as we decremented maxlen at | |
1186 | * the begining */ | |
1187 | *p = '\0'; | |
1188 | ||
1189 | return 0; | |
1190 | ||
1191 | cleanup: | |
1192 | last_parts[0] = '\0'; | |
1193 | return 1; | |
1194 | } | |
1195 | ||
1196 | /** | |
1197 | * Call generate_mtdparts to process all devices and generate corresponding | |
1198 | * mtdparts string, save it in mtdparts environment variable. | |
1199 | * | |
1200 | * @param buf output buffer holding generated mtdparts string (output) | |
1201 | * @param buflen buffer size | |
1202 | * @return 0 on success, 1 otherwise | |
1203 | */ | |
1204 | static int generate_mtdparts_save(char *buf, u32 buflen) | |
1205 | { | |
1206 | int ret; | |
1207 | ||
1208 | ret = generate_mtdparts(buf, buflen); | |
1209 | ||
1210 | if ((buf[0] != '\0') && (ret == 0)) | |
1211 | setenv("mtdparts", buf); | |
1212 | else | |
1213 | setenv("mtdparts", NULL); | |
1214 | ||
1215 | return ret; | |
1216 | } | |
1217 | ||
1218 | /** | |
1219 | * Format and print out a partition list for each device from global device | |
1220 | * list. | |
1221 | */ | |
1222 | static void list_partitions(void) | |
1223 | { | |
1224 | struct list_head *dentry, *pentry; | |
1225 | struct part_info *part; | |
1226 | struct mtd_device *dev; | |
1227 | int part_num; | |
1228 | ||
1229 | DEBUGF("\n---list_partitions---\n"); | |
1230 | list_for_each(dentry, &devices) { | |
1231 | dev = list_entry(dentry, struct mtd_device, link); | |
1232 | printf("\ndevice %s%d <%s>, # parts = %d\n", | |
1233 | MTD_DEV_TYPE(dev->id->type), dev->id->num, | |
1234 | dev->id->mtd_id, dev->num_parts); | |
08f077da | 1235 | printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n"); |
68d7d651 SR |
1236 | |
1237 | /* list partitions for given device */ | |
1238 | part_num = 0; | |
1239 | list_for_each(pentry, &dev->parts) { | |
1240 | part = list_entry(pentry, struct part_info, link); | |
1241 | printf("%2d: %-20s0x%08x\t0x%08x\t%d\n", | |
1242 | part_num, part->name, part->size, | |
1243 | part->offset, part->mask_flags); | |
1244 | ||
1245 | part_num++; | |
1246 | } | |
1247 | } | |
1248 | if (list_empty(&devices)) | |
1249 | printf("no partitions defined\n"); | |
1250 | ||
76b5883d SR |
1251 | /* current_mtd_dev is not NULL only when we have non empty device list */ |
1252 | if (current_mtd_dev) { | |
1253 | part = mtd_part_info(current_mtd_dev, current_mtd_partnum); | |
68d7d651 SR |
1254 | if (part) { |
1255 | printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n", | |
76b5883d SR |
1256 | MTD_DEV_TYPE(current_mtd_dev->id->type), |
1257 | current_mtd_dev->id->num, current_mtd_partnum, | |
68d7d651 SR |
1258 | part->name, part->size, part->offset); |
1259 | } else { | |
1260 | printf("could not get current partition info\n\n"); | |
1261 | } | |
1262 | } | |
1263 | ||
1264 | printf("\ndefaults:\n"); | |
36c9169a WD |
1265 | printf("mtdids : %s\n", |
1266 | mtdids_default ? mtdids_default : "none"); | |
1267 | printf("mtdparts: %s\n", | |
1268 | mtdparts_default ? mtdparts_default : "none"); | |
68d7d651 SR |
1269 | } |
1270 | ||
1271 | /** | |
1272 | * Given partition identifier in form of <dev_type><dev_num>,<part_num> find | |
1273 | * corresponding device and verify partition number. | |
1274 | * | |
1275 | * @param id string describing device and partition or partition name | |
1276 | * @param dev pointer to the requested device (output) | |
1277 | * @param part_num verified partition number (output) | |
1278 | * @param part pointer to requested partition (output) | |
1279 | * @return 0 on success, 1 otherwise | |
1280 | */ | |
1281 | int find_dev_and_part(const char *id, struct mtd_device **dev, | |
1282 | u8 *part_num, struct part_info **part) | |
1283 | { | |
1284 | struct list_head *dentry, *pentry; | |
1285 | u8 type, dnum, pnum; | |
1286 | const char *p; | |
1287 | ||
1288 | DEBUGF("--- find_dev_and_part ---\nid = %s\n", id); | |
1289 | ||
1290 | list_for_each(dentry, &devices) { | |
1291 | *part_num = 0; | |
1292 | *dev = list_entry(dentry, struct mtd_device, link); | |
1293 | list_for_each(pentry, &(*dev)->parts) { | |
1294 | *part = list_entry(pentry, struct part_info, link); | |
1295 | if (strcmp((*part)->name, id) == 0) | |
1296 | return 0; | |
1297 | (*part_num)++; | |
1298 | } | |
1299 | } | |
1300 | ||
1301 | p = id; | |
1302 | *dev = NULL; | |
1303 | *part = NULL; | |
1304 | *part_num = 0; | |
1305 | ||
1306 | if (mtd_id_parse(p, &p, &type, &dnum) != 0) | |
1307 | return 1; | |
1308 | ||
1309 | if ((*p++ != ',') || (*p == '\0')) { | |
1310 | printf("no partition number specified\n"); | |
1311 | return 1; | |
1312 | } | |
1313 | pnum = simple_strtoul(p, (char **)&p, 0); | |
1314 | if (*p != '\0') { | |
1315 | printf("unexpected trailing character '%c'\n", *p); | |
1316 | return 1; | |
1317 | } | |
1318 | ||
1319 | if ((*dev = device_find(type, dnum)) == NULL) { | |
1320 | printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum); | |
1321 | return 1; | |
1322 | } | |
1323 | ||
1324 | if ((*part = mtd_part_info(*dev, pnum)) == NULL) { | |
1325 | printf("no such partition\n"); | |
1326 | *dev = NULL; | |
1327 | return 1; | |
1328 | } | |
1329 | ||
1330 | *part_num = pnum; | |
1331 | ||
1332 | return 0; | |
1333 | } | |
1334 | ||
1335 | /** | |
1336 | * Find and delete partition. For partition id format see find_dev_and_part(). | |
1337 | * | |
1338 | * @param id string describing device and partition | |
1339 | * @return 0 on success, 1 otherwise | |
1340 | */ | |
1341 | static int delete_partition(const char *id) | |
1342 | { | |
1343 | u8 pnum; | |
1344 | struct mtd_device *dev; | |
1345 | struct part_info *part; | |
1346 | ||
1347 | if (find_dev_and_part(id, &dev, &pnum, &part) == 0) { | |
1348 | ||
1349 | DEBUGF("delete_partition: device = %s%d, partition %d = (%s) 0x%08lx@0x%08lx\n", | |
1350 | MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum, | |
1351 | part->name, part->size, part->offset); | |
1352 | ||
1353 | if (part_del(dev, part) != 0) | |
1354 | return 1; | |
1355 | ||
1356 | if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) { | |
1357 | printf("generated mtdparts too long, reseting to null\n"); | |
1358 | return 1; | |
1359 | } | |
1360 | return 0; | |
1361 | } | |
1362 | ||
1363 | printf("partition %s not found\n", id); | |
1364 | return 1; | |
1365 | } | |
1366 | ||
1367 | /** | |
1368 | * Accept character string describing mtd partitions and call device_parse() | |
1369 | * for each entry. Add created devices to the global devices list. | |
1370 | * | |
1371 | * @param mtdparts string specifing mtd partitions | |
1372 | * @return 0 on success, 1 otherwise | |
1373 | */ | |
1374 | static int parse_mtdparts(const char *const mtdparts) | |
1375 | { | |
1376 | const char *p = mtdparts; | |
1377 | struct mtd_device *dev; | |
1378 | int err = 1; | |
1379 | ||
1380 | DEBUGF("\n---parse_mtdparts---\nmtdparts = %s\n\n", p); | |
1381 | ||
1382 | /* delete all devices and partitions */ | |
1383 | if (mtd_devices_init() != 0) { | |
1384 | printf("could not initialise device list\n"); | |
1385 | return err; | |
1386 | } | |
1387 | ||
1388 | /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */ | |
1389 | p = getenv("mtdparts"); | |
1390 | ||
1391 | if (strncmp(p, "mtdparts=", 9) != 0) { | |
1392 | printf("mtdparts variable doesn't start with 'mtdparts='\n"); | |
1393 | return err; | |
1394 | } | |
1395 | p += 9; | |
1396 | ||
1397 | while (p && (*p != '\0')) { | |
1398 | err = 1; | |
1399 | if ((device_parse(p, &p, &dev) != 0) || (!dev)) | |
1400 | break; | |
1401 | ||
1402 | DEBUGF("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type), | |
1403 | dev->id->num, dev->id->mtd_id); | |
1404 | ||
1405 | /* check if parsed device is already on the list */ | |
1406 | if (device_find(dev->id->type, dev->id->num) != NULL) { | |
1407 | printf("device %s%d redefined, please correct mtdparts variable\n", | |
1408 | MTD_DEV_TYPE(dev->id->type), dev->id->num); | |
1409 | break; | |
1410 | } | |
1411 | ||
1412 | list_add_tail(&dev->link, &devices); | |
1413 | err = 0; | |
1414 | } | |
1415 | if (err == 1) { | |
1416 | device_delall(&devices); | |
1417 | return 1; | |
1418 | } | |
1419 | ||
1420 | return 0; | |
1421 | } | |
1422 | ||
1423 | /** | |
1424 | * Parse provided string describing mtdids mapping (see file header for mtdids | |
1425 | * variable format). Allocate memory for each entry and add all found entries | |
1426 | * to the global mtdids list. | |
1427 | * | |
1428 | * @param ids mapping string | |
1429 | * @return 0 on success, 1 otherwise | |
1430 | */ | |
1431 | static int parse_mtdids(const char *const ids) | |
1432 | { | |
1433 | const char *p = ids; | |
1434 | const char *mtd_id; | |
1435 | int mtd_id_len; | |
1436 | struct mtdids *id; | |
1437 | struct list_head *entry, *n; | |
1438 | struct mtdids *id_tmp; | |
1439 | u8 type, num; | |
1440 | u32 size; | |
1441 | int ret = 1; | |
1442 | ||
1443 | DEBUGF("\n---parse_mtdids---\nmtdids = %s\n\n", ids); | |
1444 | ||
1445 | /* clean global mtdids list */ | |
1446 | list_for_each_safe(entry, n, &mtdids) { | |
1447 | id_tmp = list_entry(entry, struct mtdids, link); | |
1448 | DEBUGF("mtdids del: %d %d\n", id_tmp->type, id_tmp->num); | |
1449 | list_del(entry); | |
1450 | free(id_tmp); | |
1451 | } | |
1452 | last_ids[0] = '\0'; | |
1453 | INIT_LIST_HEAD(&mtdids); | |
1454 | ||
1455 | while(p && (*p != '\0')) { | |
1456 | ||
1457 | ret = 1; | |
1458 | /* parse 'nor'|'nand'|'onenand'<dev-num> */ | |
1459 | if (mtd_id_parse(p, &p, &type, &num) != 0) | |
1460 | break; | |
1461 | ||
1462 | if (*p != '=') { | |
1463 | printf("mtdids: incorrect <dev-num>\n"); | |
1464 | break; | |
1465 | } | |
1466 | p++; | |
1467 | ||
1468 | /* check if requested device exists */ | |
1469 | if (mtd_device_validate(type, num, &size) != 0) | |
1470 | return 1; | |
1471 | ||
1472 | /* locate <mtd-id> */ | |
1473 | mtd_id = p; | |
1474 | if ((p = strchr(mtd_id, ',')) != NULL) { | |
1475 | mtd_id_len = p - mtd_id + 1; | |
1476 | p++; | |
1477 | } else { | |
1478 | mtd_id_len = strlen(mtd_id) + 1; | |
1479 | } | |
1480 | if (mtd_id_len == 0) { | |
1481 | printf("mtdids: no <mtd-id> identifier\n"); | |
1482 | break; | |
1483 | } | |
1484 | ||
1485 | /* check if this id is already on the list */ | |
1486 | int double_entry = 0; | |
1487 | list_for_each(entry, &mtdids) { | |
1488 | id_tmp = list_entry(entry, struct mtdids, link); | |
1489 | if ((id_tmp->type == type) && (id_tmp->num == num)) { | |
1490 | double_entry = 1; | |
1491 | break; | |
1492 | } | |
1493 | } | |
1494 | if (double_entry) { | |
1495 | printf("device id %s%d redefined, please correct mtdids variable\n", | |
1496 | MTD_DEV_TYPE(type), num); | |
1497 | break; | |
1498 | } | |
1499 | ||
1500 | /* allocate mtdids structure */ | |
1501 | if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) { | |
1502 | printf("out of memory\n"); | |
1503 | break; | |
1504 | } | |
1505 | memset(id, 0, sizeof(struct mtdids) + mtd_id_len); | |
1506 | id->num = num; | |
1507 | id->type = type; | |
1508 | id->size = size; | |
1509 | id->mtd_id = (char *)(id + 1); | |
1510 | strncpy(id->mtd_id, mtd_id, mtd_id_len - 1); | |
1511 | id->mtd_id[mtd_id_len - 1] = '\0'; | |
1512 | INIT_LIST_HEAD(&id->link); | |
1513 | ||
1514 | DEBUGF("+ id %s%d\t%16d bytes\t%s\n", | |
1515 | MTD_DEV_TYPE(id->type), id->num, | |
1516 | id->size, id->mtd_id); | |
1517 | ||
1518 | list_add_tail(&id->link, &mtdids); | |
1519 | ret = 0; | |
1520 | } | |
1521 | if (ret == 1) { | |
1522 | /* clean mtdids list and free allocated memory */ | |
1523 | list_for_each_safe(entry, n, &mtdids) { | |
1524 | id_tmp = list_entry(entry, struct mtdids, link); | |
1525 | list_del(entry); | |
1526 | free(id_tmp); | |
1527 | } | |
1528 | return 1; | |
1529 | } | |
1530 | ||
1531 | return 0; | |
1532 | } | |
1533 | ||
1534 | /** | |
1535 | * Parse and initialize global mtdids mapping and create global | |
1536 | * device/partition list. | |
1537 | * | |
1538 | * @return 0 on success, 1 otherwise | |
1539 | */ | |
1540 | int mtdparts_init(void) | |
1541 | { | |
1542 | static int initialized = 0; | |
1543 | const char *ids, *parts; | |
1544 | const char *current_partition; | |
1545 | int ids_changed; | |
1546 | char tmp_ep[PARTITION_MAXLEN]; | |
1547 | ||
1548 | DEBUGF("\n---mtdparts_init---\n"); | |
1549 | if (!initialized) { | |
1550 | INIT_LIST_HEAD(&mtdids); | |
1551 | INIT_LIST_HEAD(&devices); | |
1552 | memset(last_ids, 0, MTDIDS_MAXLEN); | |
1553 | memset(last_parts, 0, MTDPARTS_MAXLEN); | |
1554 | memset(last_partition, 0, PARTITION_MAXLEN); | |
1555 | initialized = 1; | |
1556 | } | |
1557 | ||
1558 | /* get variables */ | |
1559 | ids = getenv("mtdids"); | |
1560 | parts = getenv("mtdparts"); | |
1561 | current_partition = getenv("partition"); | |
1562 | ||
1563 | /* save it for later parsing, cannot rely on current partition pointer | |
1564 | * as 'partition' variable may be updated during init */ | |
1565 | tmp_ep[0] = '\0'; | |
1566 | if (current_partition) | |
1567 | strncpy(tmp_ep, current_partition, PARTITION_MAXLEN); | |
1568 | ||
1569 | DEBUGF("last_ids : %s\n", last_ids); | |
1570 | DEBUGF("env_ids : %s\n", ids); | |
1571 | DEBUGF("last_parts: %s\n", last_parts); | |
1572 | DEBUGF("env_parts : %s\n\n", parts); | |
1573 | ||
1574 | DEBUGF("last_partition : %s\n", last_partition); | |
1575 | DEBUGF("env_partition : %s\n", current_partition); | |
1576 | ||
1577 | /* if mtdids varible is empty try to use defaults */ | |
1578 | if (!ids) { | |
1579 | if (mtdids_default) { | |
1580 | DEBUGF("mtdids variable not defined, using default\n"); | |
1581 | ids = mtdids_default; | |
1582 | setenv("mtdids", (char *)ids); | |
1583 | } else { | |
1584 | printf("mtdids not defined, no default present\n"); | |
1585 | return 1; | |
1586 | } | |
1587 | } | |
1588 | if (strlen(ids) > MTDIDS_MAXLEN - 1) { | |
1589 | printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN); | |
1590 | return 1; | |
1591 | } | |
1592 | ||
1593 | /* do no try to use defaults when mtdparts variable is not defined, | |
1594 | * just check the length */ | |
1595 | if (!parts) | |
1596 | printf("mtdparts variable not set, see 'help mtdparts'\n"); | |
1597 | ||
1598 | if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) { | |
1599 | printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN); | |
1600 | return 1; | |
1601 | } | |
1602 | ||
1603 | /* check if we have already parsed those mtdids */ | |
1604 | if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) { | |
1605 | ids_changed = 0; | |
1606 | } else { | |
1607 | ids_changed = 1; | |
1608 | ||
1609 | if (parse_mtdids(ids) != 0) { | |
1610 | mtd_devices_init(); | |
1611 | return 1; | |
1612 | } | |
1613 | ||
1614 | /* ok it's good, save new ids */ | |
1615 | strncpy(last_ids, ids, MTDIDS_MAXLEN); | |
1616 | } | |
1617 | ||
1618 | /* parse partitions if either mtdparts or mtdids were updated */ | |
1619 | if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) { | |
1620 | if (parse_mtdparts(parts) != 0) | |
1621 | return 1; | |
1622 | ||
1623 | if (list_empty(&devices)) { | |
1624 | printf("mtdparts_init: no valid partitions\n"); | |
1625 | return 1; | |
1626 | } | |
1627 | ||
1628 | /* ok it's good, save new parts */ | |
1629 | strncpy(last_parts, parts, MTDPARTS_MAXLEN); | |
1630 | ||
1631 | /* reset first partition from first dev from the list as current */ | |
76b5883d SR |
1632 | current_mtd_dev = list_entry(devices.next, struct mtd_device, link); |
1633 | current_mtd_partnum = 0; | |
68d7d651 SR |
1634 | current_save(); |
1635 | ||
76b5883d SR |
1636 | DEBUGF("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n", |
1637 | MTD_DEV_TYPE(current_mtd_dev->id->type), | |
1638 | current_mtd_dev->id->num, current_mtd_partnum); | |
68d7d651 SR |
1639 | } |
1640 | ||
1641 | /* mtdparts variable was reset to NULL, delete all devices/partitions */ | |
1642 | if (!parts && (last_parts[0] != '\0')) | |
1643 | return mtd_devices_init(); | |
1644 | ||
1645 | /* do not process current partition if mtdparts variable is null */ | |
1646 | if (!parts) | |
1647 | return 0; | |
1648 | ||
1649 | /* is current partition set in environment? if so, use it */ | |
1650 | if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) { | |
1651 | struct part_info *p; | |
1652 | struct mtd_device *cdev; | |
1653 | u8 pnum; | |
1654 | ||
1655 | DEBUGF("--- getting current partition: %s\n", tmp_ep); | |
1656 | ||
1657 | if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) { | |
76b5883d SR |
1658 | current_mtd_dev = cdev; |
1659 | current_mtd_partnum = pnum; | |
68d7d651 SR |
1660 | current_save(); |
1661 | } | |
1662 | } else if (getenv("partition") == NULL) { | |
1663 | DEBUGF("no partition variable set, setting...\n"); | |
1664 | current_save(); | |
1665 | } | |
1666 | ||
1667 | return 0; | |
1668 | } | |
1669 | ||
1670 | /** | |
1671 | * Return pointer to the partition of a requested number from a requested | |
1672 | * device. | |
1673 | * | |
1674 | * @param dev device that is to be searched for a partition | |
1675 | * @param part_num requested partition number | |
1676 | * @return pointer to the part_info, NULL otherwise | |
1677 | */ | |
1678 | static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num) | |
1679 | { | |
1680 | struct list_head *entry; | |
1681 | struct part_info *part; | |
1682 | int num; | |
1683 | ||
1684 | if (!dev) | |
1685 | return NULL; | |
1686 | ||
1687 | DEBUGF("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n", | |
1688 | part_num, MTD_DEV_TYPE(dev->id->type), | |
1689 | dev->id->num, dev->id->mtd_id); | |
1690 | ||
1691 | if (part_num >= dev->num_parts) { | |
1692 | printf("invalid partition number %d for device %s%d (%s)\n", | |
1693 | part_num, MTD_DEV_TYPE(dev->id->type), | |
1694 | dev->id->num, dev->id->mtd_id); | |
1695 | return NULL; | |
1696 | } | |
1697 | ||
1698 | /* locate partition number, return it */ | |
1699 | num = 0; | |
1700 | list_for_each(entry, &dev->parts) { | |
1701 | part = list_entry(entry, struct part_info, link); | |
1702 | ||
1703 | if (part_num == num++) { | |
1704 | return part; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | return NULL; | |
1709 | } | |
1710 | ||
1711 | /***************************************************/ | |
1712 | /* U-boot commands */ | |
1713 | /***************************************************/ | |
1714 | /* command line only */ | |
1715 | /** | |
1716 | * Routine implementing u-boot chpart command. Sets new current partition based | |
1717 | * on the user supplied partition id. For partition id format see find_dev_and_part(). | |
1718 | * | |
1719 | * @param cmdtp command internal data | |
1720 | * @param flag command flag | |
1721 | * @param argc number of arguments supplied to the command | |
1722 | * @param argv arguments list | |
1723 | * @return 0 on success, 1 otherwise | |
1724 | */ | |
1725 | int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
1726 | { | |
1727 | /* command line only */ | |
1728 | struct mtd_device *dev; | |
1729 | struct part_info *part; | |
1730 | u8 pnum; | |
1731 | ||
1732 | if (mtdparts_init() !=0) | |
1733 | return 1; | |
1734 | ||
1735 | if (argc < 2) { | |
1736 | printf("no partition id specified\n"); | |
1737 | return 1; | |
1738 | } | |
1739 | ||
1740 | if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0) | |
1741 | return 1; | |
1742 | ||
76b5883d SR |
1743 | current_mtd_dev = dev; |
1744 | current_mtd_partnum = pnum; | |
68d7d651 SR |
1745 | current_save(); |
1746 | ||
1747 | printf("partition changed to %s%d,%d\n", | |
1748 | MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum); | |
1749 | ||
1750 | return 0; | |
1751 | } | |
1752 | ||
1753 | /** | |
1754 | * Routine implementing u-boot mtdparts command. Initialize/update default global | |
1755 | * partition list and process user partition request (list, add, del). | |
1756 | * | |
1757 | * @param cmdtp command internal data | |
1758 | * @param flag command flag | |
1759 | * @param argc number of arguments supplied to the command | |
1760 | * @param argv arguments list | |
1761 | * @return 0 on success, 1 otherwise | |
1762 | */ | |
1763 | int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[]) | |
1764 | { | |
1765 | if (argc == 2) { | |
1766 | if (strcmp(argv[1], "default") == 0) { | |
1767 | setenv("mtdids", (char *)mtdids_default); | |
1768 | setenv("mtdparts", (char *)mtdparts_default); | |
1769 | setenv("partition", NULL); | |
1770 | ||
1771 | mtdparts_init(); | |
1772 | return 0; | |
1773 | } else if (strcmp(argv[1], "delall") == 0) { | |
1774 | /* this may be the first run, initialize lists if needed */ | |
1775 | mtdparts_init(); | |
1776 | ||
1777 | setenv("mtdparts", NULL); | |
1778 | ||
1779 | /* mtd_devices_init() calls current_save() */ | |
1780 | return mtd_devices_init(); | |
1781 | } | |
1782 | } | |
1783 | ||
1784 | /* make sure we are in sync with env variables */ | |
1785 | if (mtdparts_init() != 0) | |
1786 | return 1; | |
1787 | ||
1788 | if (argc == 1) { | |
1789 | list_partitions(); | |
1790 | return 0; | |
1791 | } | |
1792 | ||
1793 | /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */ | |
1794 | if (((argc == 5) || (argc == 6)) && (strcmp(argv[1], "add") == 0)) { | |
1795 | #define PART_ADD_DESC_MAXLEN 64 | |
1796 | char tmpbuf[PART_ADD_DESC_MAXLEN]; | |
1797 | u8 type, num, len; | |
1798 | struct mtd_device *dev; | |
1799 | struct mtd_device *dev_tmp; | |
1800 | struct mtdids *id; | |
1801 | struct part_info *p; | |
1802 | ||
1803 | if (mtd_id_parse(argv[2], NULL, &type, &num) != 0) | |
1804 | return 1; | |
1805 | ||
1806 | if ((id = id_find(type, num)) == NULL) { | |
1807 | printf("no such device %s defined in mtdids variable\n", argv[2]); | |
1808 | return 1; | |
1809 | } | |
1810 | ||
1811 | len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */ | |
1812 | len += strlen(argv[3]); /* size@offset */ | |
1813 | len += strlen(argv[4]) + 2; /* '(' name ')' */ | |
1814 | if (argv[5] && (strlen(argv[5]) == 2)) | |
1815 | len += 2; /* 'ro' */ | |
1816 | ||
1817 | if (len >= PART_ADD_DESC_MAXLEN) { | |
1818 | printf("too long partition description\n"); | |
1819 | return 1; | |
1820 | } | |
1821 | sprintf(tmpbuf, "%s:%s(%s)%s", | |
1822 | id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : ""); | |
1823 | DEBUGF("add tmpbuf: %s\n", tmpbuf); | |
1824 | ||
1825 | if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev)) | |
1826 | return 1; | |
1827 | ||
1828 | DEBUGF("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type), | |
1829 | dev->id->num, dev->id->mtd_id); | |
1830 | ||
1831 | if ((dev_tmp = device_find(dev->id->type, dev->id->num)) == NULL) { | |
1832 | device_add(dev); | |
1833 | } else { | |
1834 | /* merge new partition with existing ones*/ | |
1835 | p = list_entry(dev->parts.next, struct part_info, link); | |
1836 | if (part_add(dev_tmp, p) != 0) { | |
1837 | device_del(dev); | |
1838 | return 1; | |
1839 | } | |
1840 | } | |
1841 | ||
1842 | if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) { | |
1843 | printf("generated mtdparts too long, reseting to null\n"); | |
1844 | return 1; | |
1845 | } | |
1846 | ||
1847 | return 0; | |
1848 | } | |
1849 | ||
1850 | /* mtdparts del part-id */ | |
1851 | if ((argc == 3) && (strcmp(argv[1], "del") == 0)) { | |
1852 | DEBUGF("del: part-id = %s\n", argv[2]); | |
1853 | ||
1854 | return delete_partition(argv[2]); | |
1855 | } | |
1856 | ||
1857 | cmd_usage(cmdtp); | |
1858 | return 1; | |
1859 | } | |
1860 | ||
1861 | /***************************************************/ | |
1862 | U_BOOT_CMD( | |
1863 | chpart, 2, 0, do_chpart, | |
1864 | "change active partition", | |
1865 | "part-id\n" | |
a89c33db | 1866 | " - change active partition (e.g. part-id = nand0,1)" |
68d7d651 SR |
1867 | ); |
1868 | ||
1869 | U_BOOT_CMD( | |
1870 | mtdparts, 6, 0, do_mtdparts, | |
1871 | "define flash/nand partitions", | |
1872 | "\n" | |
1873 | " - list partition table\n" | |
1874 | "mtdparts delall\n" | |
1875 | " - delete all partitions\n" | |
1876 | "mtdparts del part-id\n" | |
1877 | " - delete partition (e.g. part-id = nand0,1)\n" | |
1878 | "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n" | |
1879 | " - add partition\n" | |
1880 | "mtdparts default\n" | |
1881 | " - reset partition table to defaults\n\n" | |
1882 | "-----\n\n" | |
1883 | "this command uses three environment variables:\n\n" | |
1884 | "'partition' - keeps current partition identifier\n\n" | |
1885 | "partition := <part-id>\n" | |
1886 | "<part-id> := <dev-id>,part_num\n\n" | |
1887 | "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n" | |
1888 | "mtdids=<idmap>[,<idmap>,...]\n\n" | |
1889 | "<idmap> := <dev-id>=<mtd-id>\n" | |
1890 | "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n" | |
1891 | "<dev-num> := mtd device number, 0...\n" | |
1892 | "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n" | |
1893 | "'mtdparts' - partition list\n\n" | |
1894 | "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n" | |
1895 | "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n" | |
1896 | "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n" | |
1897 | "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n" | |
1898 | "<size> := standard linux memsize OR '-' to denote all remaining space\n" | |
1899 | "<offset> := partition start offset within the device\n" | |
1900 | "<name> := '(' NAME ')'\n" | |
a89c33db | 1901 | "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)" |
68d7d651 SR |
1902 | ); |
1903 | /***************************************************/ |