blob: 3275eb919bfb2a561364570de2c8a2c6dd0212ea [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
Tom Rini54f17922017-08-14 20:42:27 -0400136static char last_ids[MTDIDS_MAXLEN + 1];
137static char last_parts[MTDPARTS_MAXLEN + 1];
138static char last_partition[PARTITION_MAXLEN + 1];
Stefan Roese68d7d652009-03-19 13:30:36 +0100139
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 Glass018f5302017-08-03 12:22:10 -0600242 env_set_ulong("mtddevnum", mtddevnum);
Tom Rini54f17922017-08-14 20:42:27 -0400243 debug("=> mtddevnum %d,\n", mtddevnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100244 break;
245 }
246 mtddevnum += dev->num_parts;
247 }
248
Stefan Roese76b58832009-05-16 12:04:22 +0200249 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Tom Rini54f17922017-08-14 20:42:27 -0400250 if (part) {
251 env_set("mtddevname", part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100252
Tom Rini54f17922017-08-14 20:42:27 -0400253 debug("=> mtddevname %s\n", part->name);
254 } else {
255 env_set("mtddevname", NULL);
256
257 debug("=> mtddevname NULL\n");
258 }
Stefan Roese68d7d652009-03-19 13:30:36 +0100259 } else {
Simon Glass382bee52017-08-03 12:22:09 -0600260 env_set("mtddevnum", NULL);
261 env_set("mtddevname", NULL);
Stefan Roese68d7d652009-03-19 13:30:36 +0100262
Wolfgang Denke1d29502010-04-28 10:58:10 +0200263 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100264 }
265}
266
267/**
268 * Save current device and partition in environment variable 'partition'.
269 */
270static void current_save(void)
271{
272 char buf[16];
273
Wolfgang Denke1d29502010-04-28 10:58:10 +0200274 debug("--- current_save ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100275
Stefan Roese76b58832009-05-16 12:04:22 +0200276 if (current_mtd_dev) {
277 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
278 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100279
Simon Glass382bee52017-08-03 12:22:09 -0600280 env_set("partition", buf);
Stefan Roese68d7d652009-03-19 13:30:36 +0100281 strncpy(last_partition, buf, 16);
282
Wolfgang Denke1d29502010-04-28 10:58:10 +0200283 debug("=> partition %s\n", buf);
Stefan Roese68d7d652009-03-19 13:30:36 +0100284 } else {
Simon Glass382bee52017-08-03 12:22:09 -0600285 env_set("partition", NULL);
Stefan Roese68d7d652009-03-19 13:30:36 +0100286 last_partition[0] = '\0';
287
Wolfgang Denke1d29502010-04-28 10:58:10 +0200288 debug("=> partition NULL\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100289 }
290 index_partitions();
291}
292
Ben Gardiner0a026d32010-08-31 17:48:00 -0400293
294/**
295 * Produce a mtd_info given a type and num.
296 *
297 * @param type mtd type
298 * @param num mtd number
299 * @param mtd a pointer to an mtd_info instance (output)
300 * @return 0 if device is valid, 1 otherwise
301 */
302static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
303{
304 char mtd_dev[16];
305
306 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
307 *mtd = get_mtd_device_nm(mtd_dev);
308 if (IS_ERR(*mtd)) {
309 printf("Device %s not found!\n", mtd_dev);
310 return 1;
311 }
Heiko Schocher1668d642014-07-14 09:17:11 +0200312 put_mtd_device(*mtd);
Ben Gardiner0a026d32010-08-31 17:48:00 -0400313
314 return 0;
315}
316
Stefan Roese68d7d652009-03-19 13:30:36 +0100317/**
Stefan Roese864aa032009-05-12 14:31:56 +0200318 * Performs sanity check for supplied flash partition.
319 * Table of existing MTD flash devices is searched and partition device
Stefan Roese68d7d652009-03-19 13:30:36 +0100320 * is located. Alignment with the granularity of nand erasesize is verified.
321 *
322 * @param id of the parent device
323 * @param part partition to validate
324 * @return 0 if partition is valid, 1 otherwise
325 */
Stefan Roese864aa032009-05-12 14:31:56 +0200326static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
Stefan Roese68d7d652009-03-19 13:30:36 +0100327{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400328 struct mtd_info *mtd = NULL;
Stefan Roese864aa032009-05-12 14:31:56 +0200329 int i, j;
330 ulong start;
Paul Burton39ac3442013-09-04 15:16:57 +0100331 u64 offset, size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100332
Ben Gardiner0a026d32010-08-31 17:48:00 -0400333 if (get_mtd_info(id->type, id->num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200334 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100335
336 part->sector_size = mtd->erasesize;
337
Stefan Roese864aa032009-05-12 14:31:56 +0200338 if (!mtd->numeraseregions) {
339 /*
340 * Only one eraseregion (NAND, OneNAND or uniform NOR),
341 * checking for alignment is easy here
342 */
Paul Burton39ac3442013-09-04 15:16:57 +0100343 offset = part->offset;
344 if (do_div(offset, mtd->erasesize)) {
Stefan Roese864aa032009-05-12 14:31:56 +0200345 printf("%s%d: partition (%s) start offset"
346 "alignment incorrect\n",
347 MTD_DEV_TYPE(id->type), id->num, part->name);
348 return 1;
349 }
Stefan Roese68d7d652009-03-19 13:30:36 +0100350
Paul Burton39ac3442013-09-04 15:16:57 +0100351 size = part->size;
352 if (do_div(size, mtd->erasesize)) {
Stefan Roese864aa032009-05-12 14:31:56 +0200353 printf("%s%d: partition (%s) size alignment incorrect\n",
354 MTD_DEV_TYPE(id->type), id->num, part->name);
355 return 1;
356 }
357 } else {
358 /*
359 * Multiple eraseregions (non-uniform NOR),
360 * checking for alignment is more complex here
361 */
362
363 /* Check start alignment */
364 for (i = 0; i < mtd->numeraseregions; i++) {
365 start = mtd->eraseregions[i].offset;
366 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
367 if (part->offset == start)
368 goto start_ok;
369 start += mtd->eraseregions[i].erasesize;
370 }
371 }
372
373 printf("%s%d: partition (%s) start offset alignment incorrect\n",
374 MTD_DEV_TYPE(id->type), id->num, part->name);
Stefan Roese68d7d652009-03-19 13:30:36 +0100375 return 1;
Stefan Roese864aa032009-05-12 14:31:56 +0200376
377 start_ok:
378
379 /* Check end/size alignment */
380 for (i = 0; i < mtd->numeraseregions; i++) {
381 start = mtd->eraseregions[i].offset;
382 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
383 if ((part->offset + part->size) == start)
384 goto end_ok;
385 start += mtd->eraseregions[i].erasesize;
386 }
387 }
388 /* Check last sector alignment */
389 if ((part->offset + part->size) == start)
390 goto end_ok;
391
392 printf("%s%d: partition (%s) size alignment incorrect\n",
393 MTD_DEV_TYPE(id->type), id->num, part->name);
394 return 1;
395
396 end_ok:
397 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100398 }
399
400 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100401}
402
403
404/**
Otavio Salvadorf5019912013-10-03 08:04:38 -0300405 * Performs sanity check for supplied partition. Offset and size are
406 * verified to be within valid range. Partition type is checked and
407 * part_validate_eraseblock() is called with the argument of part.
Stefan Roese68d7d652009-03-19 13:30:36 +0100408 *
409 * @param id of the parent device
410 * @param part partition to validate
411 * @return 0 if partition is valid, 1 otherwise
412 */
413static int part_validate(struct mtdids *id, struct part_info *part)
414{
415 if (part->size == SIZE_REMAINING)
416 part->size = id->size - part->offset;
417
418 if (part->offset > id->size) {
Paul Burton39ac3442013-09-04 15:16:57 +0100419 printf("%s: offset %08llx beyond flash size %08llx\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100420 id->mtd_id, part->offset, id->size);
421 return 1;
422 }
423
424 if ((part->offset + part->size) <= part->offset) {
425 printf("%s%d: partition (%s) size too big\n",
426 MTD_DEV_TYPE(id->type), id->num, part->name);
427 return 1;
428 }
429
430 if (part->offset + part->size > id->size) {
431 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
432 return 1;
433 }
434
Stefan Roese864aa032009-05-12 14:31:56 +0200435 /*
436 * Now we need to check if the partition starts and ends on
437 * sector (eraseblock) regions
438 */
439 return part_validate_eraseblock(id, part);
Stefan Roese68d7d652009-03-19 13:30:36 +0100440}
441
442/**
Robert P. J. Day1f8b5462013-08-21 11:39:19 -0400443 * Delete selected partition from the partition list of the specified device.
Stefan Roese68d7d652009-03-19 13:30:36 +0100444 *
445 * @param dev device to delete partition from
446 * @param part partition to delete
447 * @return 0 on success, 1 otherwise
448 */
449static int part_del(struct mtd_device *dev, struct part_info *part)
450{
451 u8 current_save_needed = 0;
452
453 /* if there is only one partition, remove whole device */
454 if (dev->num_parts == 1)
455 return device_del(dev);
456
457 /* otherwise just delete this partition */
458
Stefan Roese76b58832009-05-16 12:04:22 +0200459 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100460 /* we are modyfing partitions for the current device,
461 * update current */
462 struct part_info *curr_pi;
Stefan Roese76b58832009-05-16 12:04:22 +0200463 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100464
465 if (curr_pi) {
466 if (curr_pi == part) {
467 printf("current partition deleted, resetting current to 0\n");
Stefan Roese76b58832009-05-16 12:04:22 +0200468 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100469 } else if (part->offset <= curr_pi->offset) {
Stefan Roese76b58832009-05-16 12:04:22 +0200470 current_mtd_partnum--;
Stefan Roese68d7d652009-03-19 13:30:36 +0100471 }
472 current_save_needed = 1;
473 }
474 }
475
Stefan Roese68d7d652009-03-19 13:30:36 +0100476 list_del(&part->link);
477 free(part);
478 dev->num_parts--;
479
480 if (current_save_needed > 0)
481 current_save();
482 else
483 index_partitions();
484
485 return 0;
486}
487
488/**
489 * Delete all partitions from parts head list, free memory.
490 *
491 * @param head list of partitions to delete
492 */
493static void part_delall(struct list_head *head)
494{
495 struct list_head *entry, *n;
496 struct part_info *part_tmp;
497
498 /* clean tmp_list and free allocated memory */
499 list_for_each_safe(entry, n, head) {
500 part_tmp = list_entry(entry, struct part_info, link);
501
Stefan Roese68d7d652009-03-19 13:30:36 +0100502 list_del(entry);
503 free(part_tmp);
504 }
505}
506
507/**
508 * Add new partition to the supplied partition list. Make sure partitions are
509 * sorted by offset in ascending order.
510 *
511 * @param head list this partition is to be added to
512 * @param new partition to be added
513 */
514static int part_sort_add(struct mtd_device *dev, struct part_info *part)
515{
516 struct list_head *entry;
517 struct part_info *new_pi, *curr_pi;
518
519 /* link partition to parrent dev */
520 part->dev = dev;
521
522 if (list_empty(&dev->parts)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +0200523 debug("part_sort_add: list empty\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100524 list_add(&part->link, &dev->parts);
525 dev->num_parts++;
526 index_partitions();
527 return 0;
528 }
529
530 new_pi = list_entry(&part->link, struct part_info, link);
531
532 /* get current partition info if we are updating current device */
533 curr_pi = NULL;
Stefan Roese76b58832009-05-16 12:04:22 +0200534 if (dev == current_mtd_dev)
535 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +0100536
537 list_for_each(entry, &dev->parts) {
538 struct part_info *pi;
539
540 pi = list_entry(entry, struct part_info, link);
541
542 /* be compliant with kernel cmdline, allow only one partition at offset zero */
543 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
544 printf("cannot add second partition at offset 0\n");
545 return 1;
546 }
547
548 if (new_pi->offset <= pi->offset) {
549 list_add_tail(&part->link, entry);
550 dev->num_parts++;
551
552 if (curr_pi && (pi->offset <= curr_pi->offset)) {
553 /* we are modyfing partitions for the current
554 * device, update current */
Stefan Roese76b58832009-05-16 12:04:22 +0200555 current_mtd_partnum++;
Stefan Roese68d7d652009-03-19 13:30:36 +0100556 current_save();
557 } else {
558 index_partitions();
559 }
560 return 0;
561 }
562 }
563
564 list_add_tail(&part->link, &dev->parts);
565 dev->num_parts++;
566 index_partitions();
567 return 0;
568}
569
570/**
571 * Add provided partition to the partition list of a given device.
572 *
573 * @param dev device to which partition is added
574 * @param part partition to be added
575 * @return 0 on success, 1 otherwise
576 */
577static int part_add(struct mtd_device *dev, struct part_info *part)
578{
579 /* verify alignment and size */
580 if (part_validate(dev->id, part) != 0)
581 return 1;
582
583 /* partition is ok, add it to the list */
584 if (part_sort_add(dev, part) != 0)
585 return 1;
586
587 return 0;
588}
589
590/**
591 * Parse one partition definition, allocate memory and return pointer to this
592 * location in retpart.
593 *
594 * @param partdef pointer to the partition definition string i.e. <part-def>
595 * @param ret output pointer to next char after parse completes (output)
596 * @param retpart pointer to the allocated partition (output)
597 * @return 0 on success, 1 otherwise
598 */
599static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
600{
601 struct part_info *part;
Paul Burton39ac3442013-09-04 15:16:57 +0100602 u64 size;
603 u64 offset;
Stefan Roese68d7d652009-03-19 13:30:36 +0100604 const char *name;
605 int name_len;
606 unsigned int mask_flags;
607 const char *p;
608
609 p = partdef;
610 *retpart = NULL;
611 *ret = NULL;
612
613 /* fetch the partition size */
614 if (*p == '-') {
615 /* assign all remaining space to this partition */
Wolfgang Denke1d29502010-04-28 10:58:10 +0200616 debug("'-': remaining size assigned\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100617 size = SIZE_REMAINING;
618 p++;
619 } else {
620 size = memsize_parse(p, &p);
621 if (size < MIN_PART_SIZE) {
Paul Burton39ac3442013-09-04 15:16:57 +0100622 printf("partition size too small (%llx)\n", size);
Stefan Roese68d7d652009-03-19 13:30:36 +0100623 return 1;
624 }
625 }
626
627 /* check for offset */
628 offset = OFFSET_NOT_SPECIFIED;
629 if (*p == '@') {
630 p++;
631 offset = memsize_parse(p, &p);
632 }
633
634 /* now look for the name */
635 if (*p == '(') {
636 name = ++p;
637 if ((p = strchr(name, ')')) == NULL) {
638 printf("no closing ) found in partition name\n");
639 return 1;
640 }
641 name_len = p - name + 1;
642 if ((name_len - 1) == 0) {
643 printf("empty partition name\n");
644 return 1;
645 }
646 p++;
647 } else {
648 /* 0x00000000@0x00000000 */
649 name_len = 22;
650 name = NULL;
651 }
652
653 /* test for options */
654 mask_flags = 0;
655 if (strncmp(p, "ro", 2) == 0) {
656 mask_flags |= MTD_WRITEABLE_CMD;
657 p += 2;
658 }
659
660 /* check for next partition definition */
661 if (*p == ',') {
662 if (size == SIZE_REMAINING) {
663 *ret = NULL;
664 printf("no partitions allowed after a fill-up partition\n");
665 return 1;
666 }
667 *ret = ++p;
668 } else if ((*p == ';') || (*p == '\0')) {
669 *ret = p;
670 } else {
671 printf("unexpected character '%c' at the end of partition\n", *p);
672 *ret = NULL;
673 return 1;
674 }
675
676 /* allocate memory */
677 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
678 if (!part) {
679 printf("out of memory\n");
680 return 1;
681 }
682 memset(part, 0, sizeof(struct part_info) + name_len);
683 part->size = size;
684 part->offset = offset;
685 part->mask_flags = mask_flags;
686 part->name = (char *)(part + 1);
687
688 if (name) {
689 /* copy user provided name */
690 strncpy(part->name, name, name_len - 1);
691 part->auto_name = 0;
692 } else {
693 /* auto generated name in form of size@offset */
Paul Burton39ac3442013-09-04 15:16:57 +0100694 sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
Stefan Roese68d7d652009-03-19 13:30:36 +0100695 part->auto_name = 1;
696 }
697
698 part->name[name_len - 1] = '\0';
699 INIT_LIST_HEAD(&part->link);
700
Paul Burton39ac3442013-09-04 15:16:57 +0100701 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100702 part->name, part->size,
703 part->offset, part->mask_flags);
704
705 *retpart = part;
706 return 0;
707}
708
709/**
710 * Check device number to be within valid range for given device type.
711 *
Ben Gardiner0a026d32010-08-31 17:48:00 -0400712 * @param type mtd type
713 * @param num mtd number
714 * @param size a pointer to the size of the mtd device (output)
Stefan Roese68d7d652009-03-19 13:30:36 +0100715 * @return 0 if device is valid, 1 otherwise
716 */
Paul Burton39ac3442013-09-04 15:16:57 +0100717static int mtd_device_validate(u8 type, u8 num, u64 *size)
Stefan Roese68d7d652009-03-19 13:30:36 +0100718{
Ben Gardiner0a026d32010-08-31 17:48:00 -0400719 struct mtd_info *mtd = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100720
Ben Gardiner0a026d32010-08-31 17:48:00 -0400721 if (get_mtd_info(type, num, &mtd))
Stefan Roese864aa032009-05-12 14:31:56 +0200722 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +0100723
Stefan Roese864aa032009-05-12 14:31:56 +0200724 *size = mtd->size;
Stefan Roese68d7d652009-03-19 13:30:36 +0100725
Stefan Roese864aa032009-05-12 14:31:56 +0200726 return 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100727}
728
729/**
730 * Delete all mtd devices from a supplied devices list, free memory allocated for
731 * each device and delete all device partitions.
732 *
733 * @return 0 on success, 1 otherwise
734 */
735static int device_delall(struct list_head *head)
736{
737 struct list_head *entry, *n;
738 struct mtd_device *dev_tmp;
739
740 /* clean devices list */
741 list_for_each_safe(entry, n, head) {
742 dev_tmp = list_entry(entry, struct mtd_device, link);
743 list_del(entry);
744 part_delall(&dev_tmp->parts);
745 free(dev_tmp);
746 }
747 INIT_LIST_HEAD(&devices);
748
749 return 0;
750}
751
752/**
753 * If provided device exists it's partitions are deleted, device is removed
754 * from device list and device memory is freed.
755 *
756 * @param dev device to be deleted
757 * @return 0 on success, 1 otherwise
758 */
759static int device_del(struct mtd_device *dev)
760{
761 part_delall(&dev->parts);
762 list_del(&dev->link);
763 free(dev);
764
Stefan Roese76b58832009-05-16 12:04:22 +0200765 if (dev == current_mtd_dev) {
Stefan Roese68d7d652009-03-19 13:30:36 +0100766 /* we just deleted current device */
767 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200768 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100769 } else {
770 /* reset first partition from first dev from the
771 * devices list as current */
Stefan Roese76b58832009-05-16 12:04:22 +0200772 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
773 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100774 }
775 current_save();
776 return 0;
777 }
778
779 index_partitions();
780 return 0;
781}
782
783/**
784 * Search global device list and return pointer to the device of type and num
785 * specified.
786 *
787 * @param type device type
788 * @param num device number
789 * @return NULL if requested device does not exist
790 */
Anatolij Gustschin3c950e22010-03-16 17:10:05 +0100791struct mtd_device *device_find(u8 type, u8 num)
Stefan Roese68d7d652009-03-19 13:30:36 +0100792{
793 struct list_head *entry;
794 struct mtd_device *dev_tmp;
795
796 list_for_each(entry, &devices) {
797 dev_tmp = list_entry(entry, struct mtd_device, link);
798
799 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
800 return dev_tmp;
801 }
802
803 return NULL;
804}
805
806/**
807 * Add specified device to the global device list.
808 *
809 * @param dev device to be added
810 */
811static void device_add(struct mtd_device *dev)
812{
813 u8 current_save_needed = 0;
814
815 if (list_empty(&devices)) {
Stefan Roese76b58832009-05-16 12:04:22 +0200816 current_mtd_dev = dev;
817 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +0100818 current_save_needed = 1;
819 }
820
821 list_add_tail(&dev->link, &devices);
822
823 if (current_save_needed > 0)
824 current_save();
825 else
826 index_partitions();
827}
828
829/**
830 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
831 * return pointer to the device structure.
832 *
833 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
834 * @param ret output pointer to next char after parse completes (output)
835 * @param retdev pointer to the allocated device (output)
836 * @return 0 on success, 1 otherwise
837 */
838static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
839{
840 struct mtd_device *dev;
841 struct part_info *part;
842 struct mtdids *id;
843 const char *mtd_id;
844 unsigned int mtd_id_len;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200845 const char *p;
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200846 const char *pend;
Stefan Roese68d7d652009-03-19 13:30:36 +0100847 LIST_HEAD(tmp_list);
848 struct list_head *entry, *n;
849 u16 num_parts;
Paul Burton39ac3442013-09-04 15:16:57 +0100850 u64 offset;
Stefan Roese68d7d652009-03-19 13:30:36 +0100851 int err = 1;
852
Wolfgang Denke1d29502010-04-28 10:58:10 +0200853 debug("===device_parse===\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100854
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200855 assert(retdev);
856 *retdev = NULL;
857
858 if (ret)
859 *ret = NULL;
860
Stefan Roese68d7d652009-03-19 13:30:36 +0100861 /* fetch <mtd-id> */
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200862 mtd_id = p = mtd_dev;
Stefan Roese68d7d652009-03-19 13:30:36 +0100863 if (!(p = strchr(mtd_id, ':'))) {
864 printf("no <mtd-id> identifier\n");
865 return 1;
866 }
867 mtd_id_len = p - mtd_id + 1;
868 p++;
869
870 /* verify if we have a valid device specified */
871 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
872 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
873 return 1;
874 }
875
Wolfgang Denk419a1fe2011-10-05 22:48:12 +0200876#ifdef DEBUG
877 pend = strchr(p, ';');
878#endif
Wolfgang Denke1d29502010-04-28 10:58:10 +0200879 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +0100880 id->type, MTD_DEV_TYPE(id->type),
881 id->num, id->mtd_id);
Vasili Galka5d69a5d2014-08-26 13:45:48 +0300882 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
Stefan Roese68d7d652009-03-19 13:30:36 +0100883
884
885 /* parse partitions */
886 num_parts = 0;
887
888 offset = 0;
889 if ((dev = device_find(id->type, id->num)) != NULL) {
890 /* if device already exists start at the end of the last partition */
891 part = list_entry(dev->parts.prev, struct part_info, link);
892 offset = part->offset + part->size;
893 }
894
895 while (p && (*p != '\0') && (*p != ';')) {
896 err = 1;
897 if ((part_parse(p, &p, &part) != 0) || (!part))
898 break;
899
900 /* calculate offset when not specified */
901 if (part->offset == OFFSET_NOT_SPECIFIED)
902 part->offset = offset;
903 else
904 offset = part->offset;
905
906 /* verify alignment and size */
907 if (part_validate(id, part) != 0)
908 break;
909
910 offset += part->size;
911
912 /* partition is ok, add it to the list */
913 list_add_tail(&part->link, &tmp_list);
914 num_parts++;
915 err = 0;
916 }
917 if (err == 1) {
918 part_delall(&tmp_list);
919 return 1;
920 }
921
Wolfgang Denke1d29502010-04-28 10:58:10 +0200922 debug("\ntotal partitions: %d\n", num_parts);
Stefan Roese68d7d652009-03-19 13:30:36 +0100923
924 /* check for next device presence */
925 if (p) {
926 if (*p == ';') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200927 if (ret)
928 *ret = ++p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100929 } else if (*p == '\0') {
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200930 if (ret)
931 *ret = p;
Stefan Roese68d7d652009-03-19 13:30:36 +0100932 } else {
933 printf("unexpected character '%c' at the end of device\n", *p);
Wolfgang Denk2697eff2010-04-28 10:53:47 +0200934 if (ret)
935 *ret = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100936 return 1;
937 }
938 }
939
940 /* allocate memory for mtd_device structure */
941 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
942 printf("out of memory\n");
943 return 1;
944 }
945 memset(dev, 0, sizeof(struct mtd_device));
946 dev->id = id;
947 dev->num_parts = 0; /* part_sort_add increments num_parts */
948 INIT_LIST_HEAD(&dev->parts);
949 INIT_LIST_HEAD(&dev->link);
950
951 /* move partitions from tmp_list to dev->parts */
952 list_for_each_safe(entry, n, &tmp_list) {
953 part = list_entry(entry, struct part_info, link);
954 list_del(entry);
955 if (part_sort_add(dev, part) != 0) {
956 device_del(dev);
957 return 1;
958 }
959 }
960
961 *retdev = dev;
962
Wolfgang Denke1d29502010-04-28 10:58:10 +0200963 debug("===\n\n");
Stefan Roese68d7d652009-03-19 13:30:36 +0100964 return 0;
965}
966
967/**
968 * Initialize global device list.
969 *
970 * @return 0 on success, 1 otherwise
971 */
972static int mtd_devices_init(void)
973{
974 last_parts[0] = '\0';
Stefan Roese76b58832009-05-16 12:04:22 +0200975 current_mtd_dev = NULL;
Stefan Roese68d7d652009-03-19 13:30:36 +0100976 current_save();
977
978 return device_delall(&devices);
979}
980
981/*
982 * Search global mtdids list and find id of requested type and number.
983 *
984 * @return pointer to the id if it exists, NULL otherwise
985 */
986static struct mtdids* id_find(u8 type, u8 num)
987{
988 struct list_head *entry;
989 struct mtdids *id;
990
991 list_for_each(entry, &mtdids) {
992 id = list_entry(entry, struct mtdids, link);
993
994 if ((id->type == type) && (id->num == num))
995 return id;
996 }
997
998 return NULL;
999}
1000
1001/**
1002 * Search global mtdids list and find id of a requested mtd_id.
1003 *
1004 * Note: first argument is not null terminated.
1005 *
1006 * @param mtd_id string containing requested mtd_id
1007 * @param mtd_id_len length of supplied mtd_id
1008 * @return pointer to the id if it exists, NULL otherwise
1009 */
1010static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1011{
1012 struct list_head *entry;
1013 struct mtdids *id;
1014
Wolfgang Denke1d29502010-04-28 10:58:10 +02001015 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001016 mtd_id_len, mtd_id, mtd_id_len);
1017
1018 list_for_each(entry, &mtdids) {
1019 id = list_entry(entry, struct mtdids, link);
1020
Vasili Galka5d69a5d2014-08-26 13:45:48 +03001021 debug("entry: '%s' (len = %zu)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001022 id->mtd_id, strlen(id->mtd_id));
1023
1024 if (mtd_id_len != strlen(id->mtd_id))
1025 continue;
1026 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1027 return id;
1028 }
1029
1030 return NULL;
1031}
1032
1033/**
1034 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1035 * return device type and number.
1036 *
1037 * @param id string describing device id
1038 * @param ret_id output pointer to next char after parse completes (output)
1039 * @param dev_type parsed device type (output)
1040 * @param dev_num parsed device number (output)
1041 * @return 0 on success, 1 otherwise
1042 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001043int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1044 u8 *dev_num)
Stefan Roese68d7d652009-03-19 13:30:36 +01001045{
1046 const char *p = id;
1047
1048 *dev_type = 0;
1049 if (strncmp(p, "nand", 4) == 0) {
1050 *dev_type = MTD_DEV_TYPE_NAND;
1051 p += 4;
1052 } else if (strncmp(p, "nor", 3) == 0) {
1053 *dev_type = MTD_DEV_TYPE_NOR;
1054 p += 3;
1055 } else if (strncmp(p, "onenand", 7) == 0) {
1056 *dev_type = MTD_DEV_TYPE_ONENAND;
1057 p += 7;
1058 } else {
1059 printf("incorrect device type in %s\n", id);
1060 return 1;
1061 }
1062
1063 if (!isdigit(*p)) {
1064 printf("incorrect device number in %s\n", id);
1065 return 1;
1066 }
1067
1068 *dev_num = simple_strtoul(p, (char **)&p, 0);
1069 if (ret_id)
1070 *ret_id = p;
1071 return 0;
1072}
1073
1074/**
1075 * Process all devices and generate corresponding mtdparts string describing
1076 * all partitions on all devices.
1077 *
1078 * @param buf output buffer holding generated mtdparts string (output)
1079 * @param buflen buffer size
1080 * @return 0 on success, 1 otherwise
1081 */
1082static int generate_mtdparts(char *buf, u32 buflen)
1083{
1084 struct list_head *pentry, *dentry;
1085 struct mtd_device *dev;
1086 struct part_info *part, *prev_part;
1087 char *p = buf;
1088 char tmpbuf[32];
Paul Burton39ac3442013-09-04 15:16:57 +01001089 u64 size, offset;
1090 u32 len, part_cnt;
Stefan Roese68d7d652009-03-19 13:30:36 +01001091 u32 maxlen = buflen - 1;
1092
Wolfgang Denke1d29502010-04-28 10:58:10 +02001093 debug("--- generate_mtdparts ---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001094
1095 if (list_empty(&devices)) {
1096 buf[0] = '\0';
1097 return 0;
1098 }
1099
Ben Whitten192bc692015-12-30 13:05:58 +00001100 strcpy(p, "mtdparts=");
Stefan Roese68d7d652009-03-19 13:30:36 +01001101 p += 9;
1102
1103 list_for_each(dentry, &devices) {
1104 dev = list_entry(dentry, struct mtd_device, link);
1105
1106 /* copy mtd_id */
1107 len = strlen(dev->id->mtd_id) + 1;
1108 if (len > maxlen)
1109 goto cleanup;
1110 memcpy(p, dev->id->mtd_id, len - 1);
1111 p += len - 1;
1112 *(p++) = ':';
1113 maxlen -= len;
1114
1115 /* format partitions */
1116 prev_part = NULL;
1117 part_cnt = 0;
1118 list_for_each(pentry, &dev->parts) {
1119 part = list_entry(pentry, struct part_info, link);
1120 size = part->size;
1121 offset = part->offset;
1122 part_cnt++;
1123
1124 /* partition size */
1125 memsize_format(tmpbuf, size);
1126 len = strlen(tmpbuf);
1127 if (len > maxlen)
1128 goto cleanup;
1129 memcpy(p, tmpbuf, len);
1130 p += len;
1131 maxlen -= len;
1132
1133
1134 /* add offset only when there is a gap between
1135 * partitions */
1136 if ((!prev_part && (offset != 0)) ||
1137 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1138
1139 memsize_format(tmpbuf, offset);
1140 len = strlen(tmpbuf) + 1;
1141 if (len > maxlen)
1142 goto cleanup;
1143 *(p++) = '@';
1144 memcpy(p, tmpbuf, len - 1);
1145 p += len - 1;
1146 maxlen -= len;
1147 }
1148
1149 /* copy name only if user supplied */
1150 if(!part->auto_name) {
1151 len = strlen(part->name) + 2;
1152 if (len > maxlen)
1153 goto cleanup;
1154
1155 *(p++) = '(';
1156 memcpy(p, part->name, len - 2);
1157 p += len - 2;
1158 *(p++) = ')';
1159 maxlen -= len;
1160 }
1161
1162 /* ro mask flag */
1163 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1164 len = 2;
1165 if (len > maxlen)
1166 goto cleanup;
1167 *(p++) = 'r';
1168 *(p++) = 'o';
1169 maxlen -= 2;
1170 }
1171
1172 /* print ',' separator if there are other partitions
1173 * following */
1174 if (dev->num_parts > part_cnt) {
1175 if (1 > maxlen)
1176 goto cleanup;
1177 *(p++) = ',';
1178 maxlen--;
1179 }
1180 prev_part = part;
1181 }
1182 /* print ';' separator if there are other devices following */
1183 if (dentry->next != &devices) {
1184 if (1 > maxlen)
1185 goto cleanup;
1186 *(p++) = ';';
1187 maxlen--;
1188 }
1189 }
1190
1191 /* we still have at least one char left, as we decremented maxlen at
1192 * the begining */
1193 *p = '\0';
1194
1195 return 0;
1196
1197cleanup:
1198 last_parts[0] = '\0';
1199 return 1;
1200}
1201
1202/**
1203 * Call generate_mtdparts to process all devices and generate corresponding
1204 * mtdparts string, save it in mtdparts environment variable.
1205 *
1206 * @param buf output buffer holding generated mtdparts string (output)
1207 * @param buflen buffer size
1208 * @return 0 on success, 1 otherwise
1209 */
1210static int generate_mtdparts_save(char *buf, u32 buflen)
1211{
1212 int ret;
1213
1214 ret = generate_mtdparts(buf, buflen);
1215
1216 if ((buf[0] != '\0') && (ret == 0))
Simon Glass382bee52017-08-03 12:22:09 -06001217 env_set("mtdparts", buf);
Stefan Roese68d7d652009-03-19 13:30:36 +01001218 else
Simon Glass382bee52017-08-03 12:22:09 -06001219 env_set("mtdparts", NULL);
Stefan Roese68d7d652009-03-19 13:30:36 +01001220
1221 return ret;
1222}
1223
Ben Gardiner04ac3802010-08-31 17:48:02 -04001224#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
Stefan Roese68d7d652009-03-19 13:30:36 +01001225/**
Ben Gardiner04ac3802010-08-31 17:48:02 -04001226 * Get the net size (w/o bad blocks) of the given partition.
1227 *
1228 * @param mtd the mtd info
1229 * @param part the partition
1230 * @return the calculated net size of this partition
Stefan Roese68d7d652009-03-19 13:30:36 +01001231 */
Ben Gardiner04ac3802010-08-31 17:48:02 -04001232static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1233{
Scott Wood36650ca2010-09-09 15:40:03 -05001234 uint64_t i, net_size = 0;
1235
Ben Gardiner04ac3802010-08-31 17:48:02 -04001236 if (!mtd->block_isbad)
1237 return part->size;
1238
Ben Gardiner04ac3802010-08-31 17:48:02 -04001239 for (i = 0; i < part->size; i += mtd->erasesize) {
1240 if (!mtd->block_isbad(mtd, part->offset + i))
1241 net_size += mtd->erasesize;
1242 }
Scott Wood36650ca2010-09-09 15:40:03 -05001243
Ben Gardiner04ac3802010-08-31 17:48:02 -04001244 return net_size;
1245}
1246#endif
1247
1248static void print_partition_table(void)
Stefan Roese68d7d652009-03-19 13:30:36 +01001249{
1250 struct list_head *dentry, *pentry;
1251 struct part_info *part;
1252 struct mtd_device *dev;
1253 int part_num;
1254
Stefan Roese68d7d652009-03-19 13:30:36 +01001255 list_for_each(dentry, &devices) {
1256 dev = list_entry(dentry, struct mtd_device, link);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001257 /* list partitions for given device */
1258 part_num = 0;
1259#if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1260 struct mtd_info *mtd;
1261
1262 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1263 return;
1264
1265 printf("\ndevice %s%d <%s>, # parts = %d\n",
1266 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1267 dev->id->mtd_id, dev->num_parts);
1268 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1269
1270 list_for_each(pentry, &dev->parts) {
1271 u32 net_size;
1272 char *size_note;
1273
1274 part = list_entry(pentry, struct part_info, link);
1275 net_size = net_part_size(mtd, part);
1276 size_note = part->size == net_size ? " " : " (!)";
1277 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1278 part_num, part->name, part->size,
1279 net_size, size_note, part->offset,
1280 part->mask_flags);
1281#else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001282 printf("\ndevice %s%d <%s>, # parts = %d\n",
1283 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1284 dev->id->mtd_id, dev->num_parts);
David Brownell08f077d2009-04-16 19:55:48 -07001285 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001286
Stefan Roese68d7d652009-03-19 13:30:36 +01001287 list_for_each(pentry, &dev->parts) {
1288 part = list_entry(pentry, struct part_info, link);
Paul Burton39ac3442013-09-04 15:16:57 +01001289 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001290 part_num, part->name, part->size,
1291 part->offset, part->mask_flags);
Ben Gardiner04ac3802010-08-31 17:48:02 -04001292#endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
Stefan Roese68d7d652009-03-19 13:30:36 +01001293 part_num++;
1294 }
1295 }
Ben Gardiner04ac3802010-08-31 17:48:02 -04001296
Stefan Roese68d7d652009-03-19 13:30:36 +01001297 if (list_empty(&devices))
1298 printf("no partitions defined\n");
Ben Gardiner04ac3802010-08-31 17:48:02 -04001299}
1300
1301/**
1302 * Format and print out a partition list for each device from global device
1303 * list.
1304 */
1305static void list_partitions(void)
1306{
1307 struct part_info *part;
1308
1309 debug("\n---list_partitions---\n");
1310 print_partition_table();
Stefan Roese68d7d652009-03-19 13:30:36 +01001311
Stefan Roese76b58832009-05-16 12:04:22 +02001312 /* current_mtd_dev is not NULL only when we have non empty device list */
1313 if (current_mtd_dev) {
1314 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001315 if (part) {
Paul Burton39ac3442013-09-04 15:16:57 +01001316 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001317 MTD_DEV_TYPE(current_mtd_dev->id->type),
1318 current_mtd_dev->id->num, current_mtd_partnum,
Stefan Roese68d7d652009-03-19 13:30:36 +01001319 part->name, part->size, part->offset);
1320 } else {
1321 printf("could not get current partition info\n\n");
1322 }
1323 }
1324
1325 printf("\ndefaults:\n");
Wolfgang Denk36c91692009-05-17 16:01:54 +02001326 printf("mtdids : %s\n",
1327 mtdids_default ? mtdids_default : "none");
Anatolij Gustschina6934472010-02-24 00:29:44 +01001328 /*
1329 * Using printf() here results in printbuffer overflow
1330 * if default mtdparts string is greater than console
1331 * printbuffer. Use puts() to prevent system crashes.
1332 */
1333 puts("mtdparts: ");
1334 puts(mtdparts_default ? mtdparts_default : "none");
1335 puts("\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001336}
1337
1338/**
1339 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1340 * corresponding device and verify partition number.
1341 *
1342 * @param id string describing device and partition or partition name
1343 * @param dev pointer to the requested device (output)
1344 * @param part_num verified partition number (output)
1345 * @param part pointer to requested partition (output)
1346 * @return 0 on success, 1 otherwise
1347 */
1348int find_dev_and_part(const char *id, struct mtd_device **dev,
1349 u8 *part_num, struct part_info **part)
1350{
1351 struct list_head *dentry, *pentry;
1352 u8 type, dnum, pnum;
1353 const char *p;
1354
Wolfgang Denke1d29502010-04-28 10:58:10 +02001355 debug("--- find_dev_and_part ---\nid = %s\n", id);
Stefan Roese68d7d652009-03-19 13:30:36 +01001356
1357 list_for_each(dentry, &devices) {
1358 *part_num = 0;
1359 *dev = list_entry(dentry, struct mtd_device, link);
1360 list_for_each(pentry, &(*dev)->parts) {
1361 *part = list_entry(pentry, struct part_info, link);
1362 if (strcmp((*part)->name, id) == 0)
1363 return 0;
1364 (*part_num)++;
1365 }
1366 }
1367
1368 p = id;
1369 *dev = NULL;
1370 *part = NULL;
1371 *part_num = 0;
1372
1373 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1374 return 1;
1375
1376 if ((*p++ != ',') || (*p == '\0')) {
1377 printf("no partition number specified\n");
1378 return 1;
1379 }
1380 pnum = simple_strtoul(p, (char **)&p, 0);
1381 if (*p != '\0') {
1382 printf("unexpected trailing character '%c'\n", *p);
1383 return 1;
1384 }
1385
1386 if ((*dev = device_find(type, dnum)) == NULL) {
1387 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1388 return 1;
1389 }
1390
1391 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1392 printf("no such partition\n");
1393 *dev = NULL;
1394 return 1;
1395 }
1396
1397 *part_num = pnum;
1398
1399 return 0;
1400}
1401
1402/**
1403 * Find and delete partition. For partition id format see find_dev_and_part().
1404 *
1405 * @param id string describing device and partition
1406 * @return 0 on success, 1 otherwise
1407 */
1408static int delete_partition(const char *id)
1409{
1410 u8 pnum;
1411 struct mtd_device *dev;
1412 struct part_info *part;
1413
1414 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1415
Paul Burton39ac3442013-09-04 15:16:57 +01001416 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001417 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1418 part->name, part->size, part->offset);
1419
1420 if (part_del(dev, part) != 0)
1421 return 1;
1422
1423 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00001424 printf("generated mtdparts too long, resetting to null\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001425 return 1;
1426 }
1427 return 0;
1428 }
1429
1430 printf("partition %s not found\n", id);
1431 return 1;
1432}
1433
Ben Gardinerca75b202010-08-31 17:48:03 -04001434#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1435/**
1436 * Increase the size of the given partition so that it's net size is at least
1437 * as large as the size member and such that the next partition would start on a
1438 * good block if it were adjacent to this partition.
1439 *
1440 * @param mtd the mtd device
1441 * @param part the partition
1442 * @param next_offset pointer to the offset of the next partition after this
1443 * partition's size has been modified (output)
1444 */
1445static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1446 uint64_t *next_offset)
1447{
1448 uint64_t net_size, padding_size = 0;
1449 int truncated;
1450
1451 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1452 &truncated);
1453
1454 /*
1455 * Absorb bad blocks immediately following this
1456 * partition also into the partition, such that
1457 * the next partition starts with a good block.
1458 */
1459 if (!truncated) {
1460 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1461 mtd->erasesize, &padding_size, &truncated);
1462 if (truncated)
1463 padding_size = 0;
1464 else
1465 padding_size -= mtd->erasesize;
1466 }
1467
1468 if (truncated) {
1469 printf("truncated partition %s to %lld bytes\n", part->name,
1470 (uint64_t) net_size + padding_size);
1471 }
1472
1473 part->size = net_size + padding_size;
1474 *next_offset = part->offset + part->size;
1475}
1476
1477/**
1478 * Adjust all of the partition sizes, such that all partitions are at least
1479 * as big as their mtdparts environment variable sizes and they each start
1480 * on a good block.
1481 *
1482 * @return 0 on success, 1 otherwise
1483 */
1484static int spread_partitions(void)
1485{
1486 struct list_head *dentry, *pentry;
1487 struct mtd_device *dev;
1488 struct part_info *part;
1489 struct mtd_info *mtd;
1490 int part_num;
1491 uint64_t cur_offs;
1492
1493 list_for_each(dentry, &devices) {
1494 dev = list_entry(dentry, struct mtd_device, link);
1495
1496 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1497 return 1;
1498
1499 part_num = 0;
1500 cur_offs = 0;
1501 list_for_each(pentry, &dev->parts) {
1502 part = list_entry(pentry, struct part_info, link);
1503
1504 debug("spread_partitions: device = %s%d, partition %d ="
Steve Rae59441ac2016-06-29 13:50:59 -07001505 " (%s) 0x%08llx@0x%08llx\n",
Ben Gardinerca75b202010-08-31 17:48:03 -04001506 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1507 part_num, part->name, part->size,
1508 part->offset);
1509
1510 if (cur_offs > part->offset)
1511 part->offset = cur_offs;
1512
1513 spread_partition(mtd, part, &cur_offs);
1514
1515 part_num++;
1516 }
1517 }
1518
1519 index_partitions();
1520
1521 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00001522 printf("generated mtdparts too long, resetting to null\n");
Ben Gardinerca75b202010-08-31 17:48:03 -04001523 return 1;
1524 }
1525 return 0;
1526}
1527#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1528
Stefan Roese68d7d652009-03-19 13:30:36 +01001529/**
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001530 * The mtdparts variable tends to be long. If we need to access it
1531 * before the env is relocated, then we need to use our own stack
1532 * buffer. gd->env_buf will be too small.
1533 *
1534 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1535 * @return mtdparts variable string, NULL if not found
1536 */
Simon Glass723806c2017-08-03 12:22:15 -06001537static const char *env_get_mtdparts(char *buf)
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001538{
1539 if (gd->flags & GD_FLG_ENV_READY)
Simon Glass00caae62017-08-03 12:22:12 -06001540 return env_get("mtdparts");
1541 if (env_get_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1)
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001542 return buf;
1543 return NULL;
1544}
1545
1546/**
Stefan Roese68d7d652009-03-19 13:30:36 +01001547 * Accept character string describing mtd partitions and call device_parse()
1548 * for each entry. Add created devices to the global devices list.
1549 *
1550 * @param mtdparts string specifing mtd partitions
1551 * @return 0 on success, 1 otherwise
1552 */
1553static int parse_mtdparts(const char *const mtdparts)
1554{
Ladislav Michl06a040a2016-07-12 20:28:23 +02001555 const char *p;
Stefan Roese68d7d652009-03-19 13:30:36 +01001556 struct mtd_device *dev;
1557 int err = 1;
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001558 char tmp_parts[MTDPARTS_MAXLEN];
Stefan Roese68d7d652009-03-19 13:30:36 +01001559
Lothar Waßmann1aca4d52017-06-08 14:04:03 +02001560 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts);
Stefan Roese68d7d652009-03-19 13:30:36 +01001561
1562 /* delete all devices and partitions */
1563 if (mtd_devices_init() != 0) {
1564 printf("could not initialise device list\n");
1565 return err;
1566 }
1567
1568 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
Simon Glass723806c2017-08-03 12:22:15 -06001569 p = env_get_mtdparts(tmp_parts);
Ladislav Michl06a040a2016-07-12 20:28:23 +02001570 if (!p)
1571 p = mtdparts;
1572
Stefan Roese68d7d652009-03-19 13:30:36 +01001573 if (strncmp(p, "mtdparts=", 9) != 0) {
1574 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1575 return err;
1576 }
1577 p += 9;
1578
Ladislav Michl06a040a2016-07-12 20:28:23 +02001579 while (*p != '\0') {
Stefan Roese68d7d652009-03-19 13:30:36 +01001580 err = 1;
1581 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1582 break;
1583
Wolfgang Denke1d29502010-04-28 10:58:10 +02001584 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01001585 dev->id->num, dev->id->mtd_id);
1586
1587 /* check if parsed device is already on the list */
1588 if (device_find(dev->id->type, dev->id->num) != NULL) {
1589 printf("device %s%d redefined, please correct mtdparts variable\n",
1590 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1591 break;
1592 }
1593
1594 list_add_tail(&dev->link, &devices);
1595 err = 0;
1596 }
Tom Rini54f17922017-08-14 20:42:27 -04001597 if (err == 1) {
1598 free(dev);
Stefan Roese68d7d652009-03-19 13:30:36 +01001599 device_delall(&devices);
Tom Rini54f17922017-08-14 20:42:27 -04001600 }
Stefan Roese68d7d652009-03-19 13:30:36 +01001601
Ladislav Michl06a040a2016-07-12 20:28:23 +02001602 return err;
Stefan Roese68d7d652009-03-19 13:30:36 +01001603}
1604
1605/**
1606 * Parse provided string describing mtdids mapping (see file header for mtdids
1607 * variable format). Allocate memory for each entry and add all found entries
1608 * to the global mtdids list.
1609 *
1610 * @param ids mapping string
1611 * @return 0 on success, 1 otherwise
1612 */
1613static int parse_mtdids(const char *const ids)
1614{
1615 const char *p = ids;
1616 const char *mtd_id;
1617 int mtd_id_len;
1618 struct mtdids *id;
1619 struct list_head *entry, *n;
1620 struct mtdids *id_tmp;
1621 u8 type, num;
Paul Burton39ac3442013-09-04 15:16:57 +01001622 u64 size;
Stefan Roese68d7d652009-03-19 13:30:36 +01001623 int ret = 1;
1624
Wolfgang Denke1d29502010-04-28 10:58:10 +02001625 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
Stefan Roese68d7d652009-03-19 13:30:36 +01001626
1627 /* clean global mtdids list */
1628 list_for_each_safe(entry, n, &mtdids) {
1629 id_tmp = list_entry(entry, struct mtdids, link);
Wolfgang Denke1d29502010-04-28 10:58:10 +02001630 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
Stefan Roese68d7d652009-03-19 13:30:36 +01001631 list_del(entry);
1632 free(id_tmp);
1633 }
1634 last_ids[0] = '\0';
1635 INIT_LIST_HEAD(&mtdids);
1636
1637 while(p && (*p != '\0')) {
1638
1639 ret = 1;
1640 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1641 if (mtd_id_parse(p, &p, &type, &num) != 0)
1642 break;
1643
1644 if (*p != '=') {
1645 printf("mtdids: incorrect <dev-num>\n");
1646 break;
1647 }
1648 p++;
1649
1650 /* check if requested device exists */
1651 if (mtd_device_validate(type, num, &size) != 0)
1652 return 1;
1653
1654 /* locate <mtd-id> */
1655 mtd_id = p;
1656 if ((p = strchr(mtd_id, ',')) != NULL) {
1657 mtd_id_len = p - mtd_id + 1;
1658 p++;
1659 } else {
1660 mtd_id_len = strlen(mtd_id) + 1;
1661 }
1662 if (mtd_id_len == 0) {
1663 printf("mtdids: no <mtd-id> identifier\n");
1664 break;
1665 }
1666
1667 /* check if this id is already on the list */
1668 int double_entry = 0;
1669 list_for_each(entry, &mtdids) {
1670 id_tmp = list_entry(entry, struct mtdids, link);
1671 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1672 double_entry = 1;
1673 break;
1674 }
1675 }
1676 if (double_entry) {
1677 printf("device id %s%d redefined, please correct mtdids variable\n",
1678 MTD_DEV_TYPE(type), num);
1679 break;
1680 }
1681
1682 /* allocate mtdids structure */
1683 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1684 printf("out of memory\n");
1685 break;
1686 }
1687 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1688 id->num = num;
1689 id->type = type;
1690 id->size = size;
1691 id->mtd_id = (char *)(id + 1);
1692 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1693 id->mtd_id[mtd_id_len - 1] = '\0';
1694 INIT_LIST_HEAD(&id->link);
1695
Paul Burton39ac3442013-09-04 15:16:57 +01001696 debug("+ id %s%d\t%16lld bytes\t%s\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001697 MTD_DEV_TYPE(id->type), id->num,
1698 id->size, id->mtd_id);
1699
1700 list_add_tail(&id->link, &mtdids);
1701 ret = 0;
1702 }
1703 if (ret == 1) {
1704 /* clean mtdids list and free allocated memory */
1705 list_for_each_safe(entry, n, &mtdids) {
1706 id_tmp = list_entry(entry, struct mtdids, link);
1707 list_del(entry);
1708 free(id_tmp);
1709 }
1710 return 1;
1711 }
1712
1713 return 0;
1714}
1715
Ladislav Michl1c2a2622016-07-12 20:28:24 +02001716
Stefan Roese68d7d652009-03-19 13:30:36 +01001717/**
1718 * Parse and initialize global mtdids mapping and create global
1719 * device/partition list.
1720 *
1721 * @return 0 on success, 1 otherwise
1722 */
1723int mtdparts_init(void)
1724{
1725 static int initialized = 0;
1726 const char *ids, *parts;
1727 const char *current_partition;
1728 int ids_changed;
Tom Rinibc028342017-08-20 20:05:40 -04001729 char tmp_ep[PARTITION_MAXLEN + 1];
Joe Hershbergera7eb1d62013-04-08 10:32:50 +00001730 char tmp_parts[MTDPARTS_MAXLEN];
Stefan Roese68d7d652009-03-19 13:30:36 +01001731
Wolfgang Denke1d29502010-04-28 10:58:10 +02001732 debug("\n---mtdparts_init---\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001733 if (!initialized) {
1734 INIT_LIST_HEAD(&mtdids);
1735 INIT_LIST_HEAD(&devices);
Tom Rini54f17922017-08-14 20:42:27 -04001736 memset(last_ids, 0, sizeof(last_ids));
1737 memset(last_parts, 0, sizeof(last_parts));
1738 memset(last_partition, 0, sizeof(last_partition));
Ladislav Michlaf324432016-07-12 20:28:26 +02001739#if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1740 board_mtdparts_default(&mtdids_default, &mtdparts_default);
1741#endif
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001742 use_defaults = 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01001743 initialized = 1;
1744 }
1745
1746 /* get variables */
Simon Glass00caae62017-08-03 12:22:12 -06001747 ids = env_get("mtdids");
Simon Glass723806c2017-08-03 12:22:15 -06001748 parts = env_get_mtdparts(tmp_parts);
Simon Glass00caae62017-08-03 12:22:12 -06001749 current_partition = env_get("partition");
Stefan Roese68d7d652009-03-19 13:30:36 +01001750
1751 /* save it for later parsing, cannot rely on current partition pointer
1752 * as 'partition' variable may be updated during init */
Tom Rinibc028342017-08-20 20:05:40 -04001753 memset(tmp_parts, 0, sizeof(tmp_parts));
Tom Rini8b3cec72017-08-26 16:59:24 -04001754 memset(tmp_ep, 0, sizeof(tmp_ep));
Stefan Roese68d7d652009-03-19 13:30:36 +01001755 if (current_partition)
1756 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1757
Wolfgang Denke1d29502010-04-28 10:58:10 +02001758 debug("last_ids : %s\n", last_ids);
1759 debug("env_ids : %s\n", ids);
1760 debug("last_parts: %s\n", last_parts);
1761 debug("env_parts : %s\n\n", parts);
Stefan Roese68d7d652009-03-19 13:30:36 +01001762
Wolfgang Denke1d29502010-04-28 10:58:10 +02001763 debug("last_partition : %s\n", last_partition);
1764 debug("env_partition : %s\n", current_partition);
Stefan Roese68d7d652009-03-19 13:30:36 +01001765
Robert P. J. Day1cc0a9f2016-05-04 04:47:31 -04001766 /* if mtdids variable is empty try to use defaults */
Stefan Roese68d7d652009-03-19 13:30:36 +01001767 if (!ids) {
1768 if (mtdids_default) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001769 debug("mtdids variable not defined, using default\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001770 ids = mtdids_default;
Simon Glass382bee52017-08-03 12:22:09 -06001771 env_set("mtdids", (char *)ids);
Stefan Roese68d7d652009-03-19 13:30:36 +01001772 } else {
1773 printf("mtdids not defined, no default present\n");
1774 return 1;
1775 }
1776 }
1777 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1778 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1779 return 1;
1780 }
1781
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001782 /* use defaults when mtdparts variable is not defined
1783 * once mtdparts is saved environment, drop use_defaults flag */
1784 if (!parts) {
1785 if (mtdparts_default && use_defaults) {
1786 parts = mtdparts_default;
Simon Glass382bee52017-08-03 12:22:09 -06001787 if (env_set("mtdparts", (char *)parts) == 0)
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001788 use_defaults = 0;
1789 } else
1790 printf("mtdparts variable not set, see 'help mtdparts'\n");
1791 }
Stefan Roese68d7d652009-03-19 13:30:36 +01001792
1793 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1794 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1795 return 1;
1796 }
1797
1798 /* check if we have already parsed those mtdids */
1799 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1800 ids_changed = 0;
1801 } else {
1802 ids_changed = 1;
1803
1804 if (parse_mtdids(ids) != 0) {
1805 mtd_devices_init();
1806 return 1;
1807 }
1808
1809 /* ok it's good, save new ids */
1810 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1811 }
1812
1813 /* parse partitions if either mtdparts or mtdids were updated */
1814 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1815 if (parse_mtdparts(parts) != 0)
1816 return 1;
1817
1818 if (list_empty(&devices)) {
1819 printf("mtdparts_init: no valid partitions\n");
1820 return 1;
1821 }
1822
1823 /* ok it's good, save new parts */
1824 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1825
1826 /* reset first partition from first dev from the list as current */
Stefan Roese76b58832009-05-16 12:04:22 +02001827 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1828 current_mtd_partnum = 0;
Stefan Roese68d7d652009-03-19 13:30:36 +01001829 current_save();
1830
Wolfgang Denke1d29502010-04-28 10:58:10 +02001831 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
Stefan Roese76b58832009-05-16 12:04:22 +02001832 MTD_DEV_TYPE(current_mtd_dev->id->type),
1833 current_mtd_dev->id->num, current_mtd_partnum);
Stefan Roese68d7d652009-03-19 13:30:36 +01001834 }
1835
1836 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1837 if (!parts && (last_parts[0] != '\0'))
1838 return mtd_devices_init();
1839
1840 /* do not process current partition if mtdparts variable is null */
1841 if (!parts)
1842 return 0;
1843
1844 /* is current partition set in environment? if so, use it */
1845 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1846 struct part_info *p;
1847 struct mtd_device *cdev;
1848 u8 pnum;
1849
Wolfgang Denke1d29502010-04-28 10:58:10 +02001850 debug("--- getting current partition: %s\n", tmp_ep);
Stefan Roese68d7d652009-03-19 13:30:36 +01001851
1852 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
Stefan Roese76b58832009-05-16 12:04:22 +02001853 current_mtd_dev = cdev;
1854 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001855 current_save();
1856 }
Simon Glass00caae62017-08-03 12:22:12 -06001857 } else if (env_get("partition") == NULL) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02001858 debug("no partition variable set, setting...\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01001859 current_save();
1860 }
1861
1862 return 0;
1863}
1864
1865/**
1866 * Return pointer to the partition of a requested number from a requested
1867 * device.
1868 *
1869 * @param dev device that is to be searched for a partition
1870 * @param part_num requested partition number
1871 * @return pointer to the part_info, NULL otherwise
1872 */
1873static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1874{
1875 struct list_head *entry;
1876 struct part_info *part;
1877 int num;
1878
1879 if (!dev)
1880 return NULL;
1881
Wolfgang Denke1d29502010-04-28 10:58:10 +02001882 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
Stefan Roese68d7d652009-03-19 13:30:36 +01001883 part_num, MTD_DEV_TYPE(dev->id->type),
1884 dev->id->num, dev->id->mtd_id);
1885
1886 if (part_num >= dev->num_parts) {
1887 printf("invalid partition number %d for device %s%d (%s)\n",
1888 part_num, MTD_DEV_TYPE(dev->id->type),
1889 dev->id->num, dev->id->mtd_id);
1890 return NULL;
1891 }
1892
1893 /* locate partition number, return it */
1894 num = 0;
1895 list_for_each(entry, &dev->parts) {
1896 part = list_entry(entry, struct part_info, link);
1897
1898 if (part_num == num++) {
1899 return part;
1900 }
1901 }
1902
1903 return NULL;
1904}
1905
1906/***************************************************/
Bin Menga1875592016-02-05 19:30:11 -08001907/* U-Boot commands */
Stefan Roese68d7d652009-03-19 13:30:36 +01001908/***************************************************/
1909/* command line only */
1910/**
1911 * Routine implementing u-boot chpart command. Sets new current partition based
1912 * on the user supplied partition id. For partition id format see find_dev_and_part().
1913 *
1914 * @param cmdtp command internal data
1915 * @param flag command flag
1916 * @param argc number of arguments supplied to the command
1917 * @param argv arguments list
1918 * @return 0 on success, 1 otherwise
1919 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001920static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001921{
1922/* command line only */
1923 struct mtd_device *dev;
1924 struct part_info *part;
1925 u8 pnum;
1926
1927 if (mtdparts_init() !=0)
1928 return 1;
1929
1930 if (argc < 2) {
1931 printf("no partition id specified\n");
1932 return 1;
1933 }
1934
1935 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1936 return 1;
1937
Stefan Roese76b58832009-05-16 12:04:22 +02001938 current_mtd_dev = dev;
1939 current_mtd_partnum = pnum;
Stefan Roese68d7d652009-03-19 13:30:36 +01001940 current_save();
1941
1942 printf("partition changed to %s%d,%d\n",
1943 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1944
1945 return 0;
1946}
1947
1948/**
1949 * Routine implementing u-boot mtdparts command. Initialize/update default global
1950 * partition list and process user partition request (list, add, del).
1951 *
1952 * @param cmdtp command internal data
1953 * @param flag command flag
1954 * @param argc number of arguments supplied to the command
1955 * @param argv arguments list
1956 * @return 0 on success, 1 otherwise
1957 */
Kim Phillips088f1b12012-10-29 13:34:31 +00001958static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1959 char * const argv[])
Stefan Roese68d7d652009-03-19 13:30:36 +01001960{
1961 if (argc == 2) {
1962 if (strcmp(argv[1], "default") == 0) {
Simon Glass382bee52017-08-03 12:22:09 -06001963 env_set("mtdids", NULL);
1964 env_set("mtdparts", NULL);
1965 env_set("partition", NULL);
Ladislav Michlf8f744a2016-07-12 20:28:25 +02001966 use_defaults = 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01001967
1968 mtdparts_init();
1969 return 0;
1970 } else if (strcmp(argv[1], "delall") == 0) {
1971 /* this may be the first run, initialize lists if needed */
1972 mtdparts_init();
1973
Simon Glass382bee52017-08-03 12:22:09 -06001974 env_set("mtdparts", NULL);
Stefan Roese68d7d652009-03-19 13:30:36 +01001975
1976 /* mtd_devices_init() calls current_save() */
1977 return mtd_devices_init();
1978 }
1979 }
1980
1981 /* make sure we are in sync with env variables */
1982 if (mtdparts_init() != 0)
1983 return 1;
1984
1985 if (argc == 1) {
1986 list_partitions();
1987 return 0;
1988 }
1989
1990 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
Ben Gardiner59a50d22010-08-31 17:48:04 -04001991 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
Stefan Roese68d7d652009-03-19 13:30:36 +01001992#define PART_ADD_DESC_MAXLEN 64
1993 char tmpbuf[PART_ADD_DESC_MAXLEN];
Ben Gardiner59a50d22010-08-31 17:48:04 -04001994#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1995 struct mtd_info *mtd;
1996 uint64_t next_offset;
1997#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01001998 u8 type, num, len;
1999 struct mtd_device *dev;
2000 struct mtd_device *dev_tmp;
2001 struct mtdids *id;
2002 struct part_info *p;
2003
2004 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
2005 return 1;
2006
2007 if ((id = id_find(type, num)) == NULL) {
2008 printf("no such device %s defined in mtdids variable\n", argv[2]);
2009 return 1;
2010 }
2011
2012 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
2013 len += strlen(argv[3]); /* size@offset */
2014 len += strlen(argv[4]) + 2; /* '(' name ')' */
2015 if (argv[5] && (strlen(argv[5]) == 2))
2016 len += 2; /* 'ro' */
2017
2018 if (len >= PART_ADD_DESC_MAXLEN) {
2019 printf("too long partition description\n");
2020 return 1;
2021 }
2022 sprintf(tmpbuf, "%s:%s(%s)%s",
2023 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
Wolfgang Denke1d29502010-04-28 10:58:10 +02002024 debug("add tmpbuf: %s\n", tmpbuf);
Stefan Roese68d7d652009-03-19 13:30:36 +01002025
2026 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2027 return 1;
2028
Wolfgang Denke1d29502010-04-28 10:58:10 +02002029 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
Stefan Roese68d7d652009-03-19 13:30:36 +01002030 dev->id->num, dev->id->mtd_id);
2031
Ben Gardiner59a50d22010-08-31 17:48:04 -04002032 p = list_entry(dev->parts.next, struct part_info, link);
2033
2034#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2035 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2036 return 1;
2037
2038 if (!strcmp(&argv[1][3], ".spread")) {
2039 spread_partition(mtd, p, &next_offset);
Steve Rae59441ac2016-06-29 13:50:59 -07002040 debug("increased %s to %llu bytes\n", p->name, p->size);
Ben Gardiner59a50d22010-08-31 17:48:04 -04002041 }
2042#endif
2043
2044 dev_tmp = device_find(dev->id->type, dev->id->num);
2045 if (dev_tmp == NULL) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002046 device_add(dev);
Ben Gardiner59a50d22010-08-31 17:48:04 -04002047 } else if (part_add(dev_tmp, p) != 0) {
Stefan Roese68d7d652009-03-19 13:30:36 +01002048 /* merge new partition with existing ones*/
Ben Gardiner59a50d22010-08-31 17:48:04 -04002049 device_del(dev);
2050 return 1;
Stefan Roese68d7d652009-03-19 13:30:36 +01002051 }
2052
2053 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
Robert P. J. Daya22bf162013-02-04 13:51:10 +00002054 printf("generated mtdparts too long, resetting to null\n");
Stefan Roese68d7d652009-03-19 13:30:36 +01002055 return 1;
2056 }
2057
2058 return 0;
2059 }
2060
2061 /* mtdparts del part-id */
2062 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
Wolfgang Denke1d29502010-04-28 10:58:10 +02002063 debug("del: part-id = %s\n", argv[2]);
Stefan Roese68d7d652009-03-19 13:30:36 +01002064
2065 return delete_partition(argv[2]);
2066 }
2067
Ben Gardinerca75b202010-08-31 17:48:03 -04002068#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2069 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2070 return spread_partitions();
2071#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2072
Simon Glass4c12eeb2011-12-10 08:44:01 +00002073 return CMD_RET_USAGE;
Stefan Roese68d7d652009-03-19 13:30:36 +01002074}
2075
2076/***************************************************/
2077U_BOOT_CMD(
2078 chpart, 2, 0, do_chpart,
2079 "change active partition",
2080 "part-id\n"
Wolfgang Denka89c33d2009-05-24 17:06:54 +02002081 " - change active partition (e.g. part-id = nand0,1)"
Stefan Roese68d7d652009-03-19 13:30:36 +01002082);
2083
Kim Phillips088f1b12012-10-29 13:34:31 +00002084#ifdef CONFIG_SYS_LONGHELP
2085static char mtdparts_help_text[] =
Stefan Roese68d7d652009-03-19 13:30:36 +01002086 "\n"
2087 " - list partition table\n"
2088 "mtdparts delall\n"
2089 " - delete all partitions\n"
2090 "mtdparts del part-id\n"
2091 " - delete partition (e.g. part-id = nand0,1)\n"
2092 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2093 " - add partition\n"
Ben Gardiner59a50d22010-08-31 17:48:04 -04002094#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2095 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2096 " - add partition, padding size by skipping bad blocks\n"
2097#endif
Stefan Roese68d7d652009-03-19 13:30:36 +01002098 "mtdparts default\n"
Ben Gardinerca75b202010-08-31 17:48:03 -04002099 " - reset partition table to defaults\n"
2100#if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2101 "mtdparts spread\n"
2102 " - adjust the sizes of the partitions so they are\n"
2103 " at least as big as the mtdparts variable specifies\n"
2104 " and they each start on a good block\n\n"
2105#else
2106 "\n"
2107#endif /* CONFIG_CMD_MTDPARTS_SPREAD */
Stefan Roese68d7d652009-03-19 13:30:36 +01002108 "-----\n\n"
2109 "this command uses three environment variables:\n\n"
2110 "'partition' - keeps current partition identifier\n\n"
2111 "partition := <part-id>\n"
2112 "<part-id> := <dev-id>,part_num\n\n"
2113 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2114 "mtdids=<idmap>[,<idmap>,...]\n\n"
2115 "<idmap> := <dev-id>=<mtd-id>\n"
2116 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2117 "<dev-num> := mtd device number, 0...\n"
2118 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2119 "'mtdparts' - partition list\n\n"
2120 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2121 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2122 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2123 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2124 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2125 "<offset> := partition start offset within the device\n"
2126 "<name> := '(' NAME ')'\n"
Kim Phillips088f1b12012-10-29 13:34:31 +00002127 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2128#endif
2129
2130U_BOOT_CMD(
2131 mtdparts, 6, 0, do_mtdparts,
2132 "define flash/nand partitions", mtdparts_help_text
Stefan Roese68d7d652009-03-19 13:30:36 +01002133);
2134/***************************************************/