3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
9 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
12 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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
19 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
21 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
22 * Copyright 2002 SYSGO Real-Time Solutions GmbH
24 * See file CREDITS for list of people who contributed to this
27 * This program is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU General Public License as
29 * published by the Free Software Foundation; either version 2 of
30 * the License, or (at your option) any later version.
32 * This program is distributed in the hope that it will be useful,
33 * but WITHOUT ANY WARRANTY; without even the implied warranty of
34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
35 * GNU General Public License for more details.
37 * You should have received a copy of the GNU General Public License
38 * along with this program; if not, write to the Free Software
39 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
44 * Three environment variables are used by the parsing routines:
46 * 'partition' - keeps current partition identifier
48 * partition := <part-id>
49 * <part-id> := <dev-id>,part_num
52 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
54 * mtdids=<idmap>[,<idmap>,...]
56 * <idmap> := <dev-id>=<mtd-id>
57 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
58 * <dev-num> := mtd device number, 0...
59 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
62 * 'mtdparts' - partition list
64 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
66 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
67 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
68 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
69 * <size> := standard linux memsize OR '-' to denote all remaining space
70 * <offset> := partition start offset within the device
71 * <name> := '(' NAME ')'
72 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
75 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
76 * - if the above variables are not set defaults for a given target are used
80 * 1 NOR Flash, with 1 single writable partition:
81 * mtdids=nor0=edb7312-nor
82 * mtdparts=mtdparts=edb7312-nor:-
84 * 1 NOR Flash with 2 partitions, 1 NAND with one
85 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
86 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
93 #include <jffs2/load_kernel.h>
94 #include <linux/list.h>
95 #include <linux/ctype.h>
96 #include <linux/err.h>
97 #include <linux/mtd/mtd.h>
99 #if defined(CONFIG_CMD_NAND)
100 #include <linux/mtd/nand.h>
104 #if defined(CONFIG_CMD_ONENAND)
105 #include <linux/mtd/onenand.h>
106 #include <onenand_uboot.h>
109 /* special size referring to all the remaining space in a partition */
110 #define SIZE_REMAINING 0xFFFFFFFF
112 /* special offset value, it is used when not provided by user
114 * this value is used temporarily during parsing, later such offests
115 * are recalculated */
116 #define OFFSET_NOT_SPECIFIED 0xFFFFFFFF
118 /* minimum partition size */
119 #define MIN_PART_SIZE 4096
121 /* this flag needs to be set in part_info struct mask_flags
122 * field for read-only partitions */
123 #define MTD_WRITEABLE_CMD 1
125 /* default values for mtdids and mtdparts variables */
126 #if defined(MTDIDS_DEFAULT)
127 static const char *const mtdids_default = MTDIDS_DEFAULT;
129 static const char *const mtdids_default = NULL;
132 #if defined(MTDPARTS_DEFAULT)
133 static const char *const mtdparts_default = MTDPARTS_DEFAULT;
135 static const char *const mtdparts_default = NULL;
138 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
139 #define MTDIDS_MAXLEN 128
140 #define MTDPARTS_MAXLEN 512
141 #define PARTITION_MAXLEN 16
142 static char last_ids[MTDIDS_MAXLEN];
143 static char last_parts[MTDPARTS_MAXLEN];
144 static char last_partition[PARTITION_MAXLEN];
146 /* low level jffs2 cache cleaning routine */
147 extern void jffs2_free_cache(struct part_info *part);
149 /* mtdids mapping list, filled by parse_ids() */
150 static struct list_head mtdids;
152 /* device/partition list, parse_cmdline() parses into here */
153 static struct list_head devices;
155 /* current active device and partition number */
156 struct mtd_device *current_mtd_dev = NULL;
157 u8 current_mtd_partnum = 0;
159 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
161 /* command line only routines */
162 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
163 static int device_del(struct mtd_device *dev);
166 * Parses a string into a number. The number stored at ptr is
167 * potentially suffixed with K (for kilobytes, or 1024 bytes),
168 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
169 * 1073741824). If the number is suffixed with K, M, or G, then
170 * the return value is the number multiplied by one kilobyte, one
171 * megabyte, or one gigabyte, respectively.
173 * @param ptr where parse begins
174 * @param retptr output pointer to next char after parse completes (output)
175 * @return resulting unsigned int
177 static unsigned long memsize_parse (const char *const ptr, const char **retptr)
179 unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0);
200 * Format string describing supplied size. This routine does the opposite job
201 * to memsize_parse(). Size in bytes is converted to string and if possible
202 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
204 * Note, that this routine does not check for buffer overflow, it's the caller
205 * who must assure enough space.
207 * @param buf output buffer
208 * @param size size to be converted to string
210 static void memsize_format(char *buf, u32 size)
212 #define SIZE_GB ((u32)1024*1024*1024)
213 #define SIZE_MB ((u32)1024*1024)
214 #define SIZE_KB ((u32)1024)
216 if ((size % SIZE_GB) == 0)
217 sprintf(buf, "%ug", size/SIZE_GB);
218 else if ((size % SIZE_MB) == 0)
219 sprintf(buf, "%um", size/SIZE_MB);
220 else if (size % SIZE_KB == 0)
221 sprintf(buf, "%uk", size/SIZE_KB);
223 sprintf(buf, "%u", size);
227 * This routine does global indexing of all partitions. Resulting index for
228 * current partition is saved in 'mtddevnum'. Current partition name in
231 static void index_partitions(void)
234 struct part_info *part;
235 struct list_head *dentry;
236 struct mtd_device *dev;
238 debug("--- index partitions ---\n");
240 if (current_mtd_dev) {
242 list_for_each(dentry, &devices) {
243 dev = list_entry(dentry, struct mtd_device, link);
244 if (dev == current_mtd_dev) {
245 mtddevnum += current_mtd_partnum;
246 setenv_ulong("mtddevnum", mtddevnum);
249 mtddevnum += dev->num_parts;
252 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
253 setenv("mtddevname", part->name);
255 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
257 setenv("mtddevnum", NULL);
258 setenv("mtddevname", NULL);
260 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
265 * Save current device and partition in environment variable 'partition'.
267 static void current_save(void)
271 debug("--- current_save ---\n");
273 if (current_mtd_dev) {
274 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
275 current_mtd_dev->id->num, current_mtd_partnum);
277 setenv("partition", buf);
278 strncpy(last_partition, buf, 16);
280 debug("=> partition %s\n", buf);
282 setenv("partition", NULL);
283 last_partition[0] = '\0';
285 debug("=> partition NULL\n");
292 * Produce a mtd_info given a type and num.
294 * @param type mtd type
295 * @param num mtd number
296 * @param mtd a pointer to an mtd_info instance (output)
297 * @return 0 if device is valid, 1 otherwise
299 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
303 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
304 *mtd = get_mtd_device_nm(mtd_dev);
306 printf("Device %s not found!\n", mtd_dev);
314 * Performs sanity check for supplied flash partition.
315 * Table of existing MTD flash devices is searched and partition device
316 * is located. Alignment with the granularity of nand erasesize is verified.
318 * @param id of the parent device
319 * @param part partition to validate
320 * @return 0 if partition is valid, 1 otherwise
322 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
324 struct mtd_info *mtd = NULL;
328 if (get_mtd_info(id->type, id->num, &mtd))
331 part->sector_size = mtd->erasesize;
333 if (!mtd->numeraseregions) {
335 * Only one eraseregion (NAND, OneNAND or uniform NOR),
336 * checking for alignment is easy here
338 if ((unsigned long)part->offset % mtd->erasesize) {
339 printf("%s%d: partition (%s) start offset"
340 "alignment incorrect\n",
341 MTD_DEV_TYPE(id->type), id->num, part->name);
345 if (part->size % mtd->erasesize) {
346 printf("%s%d: partition (%s) size alignment incorrect\n",
347 MTD_DEV_TYPE(id->type), id->num, part->name);
352 * Multiple eraseregions (non-uniform NOR),
353 * checking for alignment is more complex here
356 /* Check start alignment */
357 for (i = 0; i < mtd->numeraseregions; i++) {
358 start = mtd->eraseregions[i].offset;
359 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
360 if (part->offset == start)
362 start += mtd->eraseregions[i].erasesize;
366 printf("%s%d: partition (%s) start offset alignment incorrect\n",
367 MTD_DEV_TYPE(id->type), id->num, part->name);
372 /* Check end/size alignment */
373 for (i = 0; i < mtd->numeraseregions; i++) {
374 start = mtd->eraseregions[i].offset;
375 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
376 if ((part->offset + part->size) == start)
378 start += mtd->eraseregions[i].erasesize;
381 /* Check last sector alignment */
382 if ((part->offset + part->size) == start)
385 printf("%s%d: partition (%s) size alignment incorrect\n",
386 MTD_DEV_TYPE(id->type), id->num, part->name);
398 * Performs sanity check for supplied partition. Offset and size are verified
399 * to be within valid range. Partition type is checked and either
400 * parts_validate_nor() or parts_validate_nand() is called with the argument
403 * @param id of the parent device
404 * @param part partition to validate
405 * @return 0 if partition is valid, 1 otherwise
407 static int part_validate(struct mtdids *id, struct part_info *part)
409 if (part->size == SIZE_REMAINING)
410 part->size = id->size - part->offset;
412 if (part->offset > id->size) {
413 printf("%s: offset %08x beyond flash size %08x\n",
414 id->mtd_id, part->offset, id->size);
418 if ((part->offset + part->size) <= part->offset) {
419 printf("%s%d: partition (%s) size too big\n",
420 MTD_DEV_TYPE(id->type), id->num, part->name);
424 if (part->offset + part->size > id->size) {
425 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
430 * Now we need to check if the partition starts and ends on
431 * sector (eraseblock) regions
433 return part_validate_eraseblock(id, part);
437 * Delete selected partition from the partion list of the specified device.
439 * @param dev device to delete partition from
440 * @param part partition to delete
441 * @return 0 on success, 1 otherwise
443 static int part_del(struct mtd_device *dev, struct part_info *part)
445 u8 current_save_needed = 0;
447 /* if there is only one partition, remove whole device */
448 if (dev->num_parts == 1)
449 return device_del(dev);
451 /* otherwise just delete this partition */
453 if (dev == current_mtd_dev) {
454 /* we are modyfing partitions for the current device,
456 struct part_info *curr_pi;
457 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
460 if (curr_pi == part) {
461 printf("current partition deleted, resetting current to 0\n");
462 current_mtd_partnum = 0;
463 } else if (part->offset <= curr_pi->offset) {
464 current_mtd_partnum--;
466 current_save_needed = 1;
470 list_del(&part->link);
474 if (current_save_needed > 0)
483 * Delete all partitions from parts head list, free memory.
485 * @param head list of partitions to delete
487 static void part_delall(struct list_head *head)
489 struct list_head *entry, *n;
490 struct part_info *part_tmp;
492 /* clean tmp_list and free allocated memory */
493 list_for_each_safe(entry, n, head) {
494 part_tmp = list_entry(entry, struct part_info, link);
502 * Add new partition to the supplied partition list. Make sure partitions are
503 * sorted by offset in ascending order.
505 * @param head list this partition is to be added to
506 * @param new partition to be added
508 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
510 struct list_head *entry;
511 struct part_info *new_pi, *curr_pi;
513 /* link partition to parrent dev */
516 if (list_empty(&dev->parts)) {
517 debug("part_sort_add: list empty\n");
518 list_add(&part->link, &dev->parts);
524 new_pi = list_entry(&part->link, struct part_info, link);
526 /* get current partition info if we are updating current device */
528 if (dev == current_mtd_dev)
529 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
531 list_for_each(entry, &dev->parts) {
532 struct part_info *pi;
534 pi = list_entry(entry, struct part_info, link);
536 /* be compliant with kernel cmdline, allow only one partition at offset zero */
537 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
538 printf("cannot add second partition at offset 0\n");
542 if (new_pi->offset <= pi->offset) {
543 list_add_tail(&part->link, entry);
546 if (curr_pi && (pi->offset <= curr_pi->offset)) {
547 /* we are modyfing partitions for the current
548 * device, update current */
549 current_mtd_partnum++;
558 list_add_tail(&part->link, &dev->parts);
565 * Add provided partition to the partition list of a given device.
567 * @param dev device to which partition is added
568 * @param part partition to be added
569 * @return 0 on success, 1 otherwise
571 static int part_add(struct mtd_device *dev, struct part_info *part)
573 /* verify alignment and size */
574 if (part_validate(dev->id, part) != 0)
577 /* partition is ok, add it to the list */
578 if (part_sort_add(dev, part) != 0)
585 * Parse one partition definition, allocate memory and return pointer to this
586 * location in retpart.
588 * @param partdef pointer to the partition definition string i.e. <part-def>
589 * @param ret output pointer to next char after parse completes (output)
590 * @param retpart pointer to the allocated partition (output)
591 * @return 0 on success, 1 otherwise
593 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
595 struct part_info *part;
597 unsigned long offset;
600 unsigned int mask_flags;
607 /* fetch the partition size */
609 /* assign all remaining space to this partition */
610 debug("'-': remaining size assigned\n");
611 size = SIZE_REMAINING;
614 size = memsize_parse(p, &p);
615 if (size < MIN_PART_SIZE) {
616 printf("partition size too small (%lx)\n", size);
621 /* check for offset */
622 offset = OFFSET_NOT_SPECIFIED;
625 offset = memsize_parse(p, &p);
628 /* now look for the name */
631 if ((p = strchr(name, ')')) == NULL) {
632 printf("no closing ) found in partition name\n");
635 name_len = p - name + 1;
636 if ((name_len - 1) == 0) {
637 printf("empty partition name\n");
642 /* 0x00000000@0x00000000 */
647 /* test for options */
649 if (strncmp(p, "ro", 2) == 0) {
650 mask_flags |= MTD_WRITEABLE_CMD;
654 /* check for next partition definition */
656 if (size == SIZE_REMAINING) {
658 printf("no partitions allowed after a fill-up partition\n");
662 } else if ((*p == ';') || (*p == '\0')) {
665 printf("unexpected character '%c' at the end of partition\n", *p);
670 /* allocate memory */
671 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
673 printf("out of memory\n");
676 memset(part, 0, sizeof(struct part_info) + name_len);
678 part->offset = offset;
679 part->mask_flags = mask_flags;
680 part->name = (char *)(part + 1);
683 /* copy user provided name */
684 strncpy(part->name, name, name_len - 1);
687 /* auto generated name in form of size@offset */
688 sprintf(part->name, "0x%08lx@0x%08lx", size, offset);
692 part->name[name_len - 1] = '\0';
693 INIT_LIST_HEAD(&part->link);
695 debug("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
696 part->name, part->size,
697 part->offset, part->mask_flags);
704 * Check device number to be within valid range for given device type.
706 * @param type mtd type
707 * @param num mtd number
708 * @param size a pointer to the size of the mtd device (output)
709 * @return 0 if device is valid, 1 otherwise
711 static int mtd_device_validate(u8 type, u8 num, u32 *size)
713 struct mtd_info *mtd = NULL;
715 if (get_mtd_info(type, num, &mtd))
724 * Delete all mtd devices from a supplied devices list, free memory allocated for
725 * each device and delete all device partitions.
727 * @return 0 on success, 1 otherwise
729 static int device_delall(struct list_head *head)
731 struct list_head *entry, *n;
732 struct mtd_device *dev_tmp;
734 /* clean devices list */
735 list_for_each_safe(entry, n, head) {
736 dev_tmp = list_entry(entry, struct mtd_device, link);
738 part_delall(&dev_tmp->parts);
741 INIT_LIST_HEAD(&devices);
747 * If provided device exists it's partitions are deleted, device is removed
748 * from device list and device memory is freed.
750 * @param dev device to be deleted
751 * @return 0 on success, 1 otherwise
753 static int device_del(struct mtd_device *dev)
755 part_delall(&dev->parts);
756 list_del(&dev->link);
759 if (dev == current_mtd_dev) {
760 /* we just deleted current device */
761 if (list_empty(&devices)) {
762 current_mtd_dev = NULL;
764 /* reset first partition from first dev from the
765 * devices list as current */
766 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
767 current_mtd_partnum = 0;
778 * Search global device list and return pointer to the device of type and num
781 * @param type device type
782 * @param num device number
783 * @return NULL if requested device does not exist
785 struct mtd_device *device_find(u8 type, u8 num)
787 struct list_head *entry;
788 struct mtd_device *dev_tmp;
790 list_for_each(entry, &devices) {
791 dev_tmp = list_entry(entry, struct mtd_device, link);
793 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
801 * Add specified device to the global device list.
803 * @param dev device to be added
805 static void device_add(struct mtd_device *dev)
807 u8 current_save_needed = 0;
809 if (list_empty(&devices)) {
810 current_mtd_dev = dev;
811 current_mtd_partnum = 0;
812 current_save_needed = 1;
815 list_add_tail(&dev->link, &devices);
817 if (current_save_needed > 0)
824 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
825 * return pointer to the device structure.
827 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
828 * @param ret output pointer to next char after parse completes (output)
829 * @param retdev pointer to the allocated device (output)
830 * @return 0 on success, 1 otherwise
832 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
834 struct mtd_device *dev;
835 struct part_info *part;
838 unsigned int mtd_id_len;
842 struct list_head *entry, *n;
847 debug("===device_parse===\n");
856 mtd_id = p = mtd_dev;
857 if (!(p = strchr(mtd_id, ':'))) {
858 printf("no <mtd-id> identifier\n");
861 mtd_id_len = p - mtd_id + 1;
864 /* verify if we have a valid device specified */
865 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
866 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
871 pend = strchr(p, ';');
873 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
874 id->type, MTD_DEV_TYPE(id->type),
875 id->num, id->mtd_id);
876 debug("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p);
879 /* parse partitions */
883 if ((dev = device_find(id->type, id->num)) != NULL) {
884 /* if device already exists start at the end of the last partition */
885 part = list_entry(dev->parts.prev, struct part_info, link);
886 offset = part->offset + part->size;
889 while (p && (*p != '\0') && (*p != ';')) {
891 if ((part_parse(p, &p, &part) != 0) || (!part))
894 /* calculate offset when not specified */
895 if (part->offset == OFFSET_NOT_SPECIFIED)
896 part->offset = offset;
898 offset = part->offset;
900 /* verify alignment and size */
901 if (part_validate(id, part) != 0)
904 offset += part->size;
906 /* partition is ok, add it to the list */
907 list_add_tail(&part->link, &tmp_list);
912 part_delall(&tmp_list);
916 if (num_parts == 0) {
917 printf("no partitions for device %s%d (%s)\n",
918 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
922 debug("\ntotal partitions: %d\n", num_parts);
924 /* check for next device presence */
929 } else if (*p == '\0') {
933 printf("unexpected character '%c' at the end of device\n", *p);
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");
945 memset(dev, 0, sizeof(struct mtd_device));
947 dev->num_parts = 0; /* part_sort_add increments num_parts */
948 INIT_LIST_HEAD(&dev->parts);
949 INIT_LIST_HEAD(&dev->link);
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);
955 if (part_sort_add(dev, part) != 0) {
968 * Initialize global device list.
970 * @return 0 on success, 1 otherwise
972 static int mtd_devices_init(void)
974 last_parts[0] = '\0';
975 current_mtd_dev = NULL;
978 return device_delall(&devices);
982 * Search global mtdids list and find id of requested type and number.
984 * @return pointer to the id if it exists, NULL otherwise
986 static struct mtdids* id_find(u8 type, u8 num)
988 struct list_head *entry;
991 list_for_each(entry, &mtdids) {
992 id = list_entry(entry, struct mtdids, link);
994 if ((id->type == type) && (id->num == num))
1002 * Search global mtdids list and find id of a requested mtd_id.
1004 * Note: first argument is not null terminated.
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
1010 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1012 struct list_head *entry;
1015 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1016 mtd_id_len, mtd_id, mtd_id_len);
1018 list_for_each(entry, &mtdids) {
1019 id = list_entry(entry, struct mtdids, link);
1021 debug("entry: '%s' (len = %d)\n",
1022 id->mtd_id, strlen(id->mtd_id));
1024 if (mtd_id_len != strlen(id->mtd_id))
1026 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1034 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1035 * return device type and number.
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
1043 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1049 if (strncmp(p, "nand", 4) == 0) {
1050 *dev_type = MTD_DEV_TYPE_NAND;
1052 } else if (strncmp(p, "nor", 3) == 0) {
1053 *dev_type = MTD_DEV_TYPE_NOR;
1055 } else if (strncmp(p, "onenand", 7) == 0) {
1056 *dev_type = MTD_DEV_TYPE_ONENAND;
1059 printf("incorrect device type in %s\n", id);
1064 printf("incorrect device number in %s\n", id);
1068 *dev_num = simple_strtoul(p, (char **)&p, 0);
1075 * Process all devices and generate corresponding mtdparts string describing
1076 * all partitions on all devices.
1078 * @param buf output buffer holding generated mtdparts string (output)
1079 * @param buflen buffer size
1080 * @return 0 on success, 1 otherwise
1082 static int generate_mtdparts(char *buf, u32 buflen)
1084 struct list_head *pentry, *dentry;
1085 struct mtd_device *dev;
1086 struct part_info *part, *prev_part;
1089 u32 size, offset, len, part_cnt;
1090 u32 maxlen = buflen - 1;
1092 debug("--- generate_mtdparts ---\n");
1094 if (list_empty(&devices)) {
1099 sprintf(p, "mtdparts=");
1102 list_for_each(dentry, &devices) {
1103 dev = list_entry(dentry, struct mtd_device, link);
1106 len = strlen(dev->id->mtd_id) + 1;
1109 memcpy(p, dev->id->mtd_id, len - 1);
1114 /* format partitions */
1117 list_for_each(pentry, &dev->parts) {
1118 part = list_entry(pentry, struct part_info, link);
1120 offset = part->offset;
1123 /* partition size */
1124 memsize_format(tmpbuf, size);
1125 len = strlen(tmpbuf);
1128 memcpy(p, tmpbuf, len);
1133 /* add offset only when there is a gap between
1135 if ((!prev_part && (offset != 0)) ||
1136 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1138 memsize_format(tmpbuf, offset);
1139 len = strlen(tmpbuf) + 1;
1143 memcpy(p, tmpbuf, len - 1);
1148 /* copy name only if user supplied */
1149 if(!part->auto_name) {
1150 len = strlen(part->name) + 2;
1155 memcpy(p, part->name, len - 2);
1162 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1171 /* print ',' separator if there are other partitions
1173 if (dev->num_parts > part_cnt) {
1181 /* print ';' separator if there are other devices following */
1182 if (dentry->next != &devices) {
1190 /* we still have at least one char left, as we decremented maxlen at
1197 last_parts[0] = '\0';
1202 * Call generate_mtdparts to process all devices and generate corresponding
1203 * mtdparts string, save it in mtdparts environment variable.
1205 * @param buf output buffer holding generated mtdparts string (output)
1206 * @param buflen buffer size
1207 * @return 0 on success, 1 otherwise
1209 static int generate_mtdparts_save(char *buf, u32 buflen)
1213 ret = generate_mtdparts(buf, buflen);
1215 if ((buf[0] != '\0') && (ret == 0))
1216 setenv("mtdparts", buf);
1218 setenv("mtdparts", NULL);
1223 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1225 * Get the net size (w/o bad blocks) of the given partition.
1227 * @param mtd the mtd info
1228 * @param part the partition
1229 * @return the calculated net size of this partition
1231 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1233 uint64_t i, net_size = 0;
1235 if (!mtd->block_isbad)
1238 for (i = 0; i < part->size; i += mtd->erasesize) {
1239 if (!mtd->block_isbad(mtd, part->offset + i))
1240 net_size += mtd->erasesize;
1247 static void print_partition_table(void)
1249 struct list_head *dentry, *pentry;
1250 struct part_info *part;
1251 struct mtd_device *dev;
1254 list_for_each(dentry, &devices) {
1255 dev = list_entry(dentry, struct mtd_device, link);
1256 /* list partitions for given device */
1258 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1259 struct mtd_info *mtd;
1261 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1264 printf("\ndevice %s%d <%s>, # parts = %d\n",
1265 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1266 dev->id->mtd_id, dev->num_parts);
1267 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1269 list_for_each(pentry, &dev->parts) {
1273 part = list_entry(pentry, struct part_info, link);
1274 net_size = net_part_size(mtd, part);
1275 size_note = part->size == net_size ? " " : " (!)";
1276 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1277 part_num, part->name, part->size,
1278 net_size, size_note, part->offset,
1280 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1281 printf("\ndevice %s%d <%s>, # parts = %d\n",
1282 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1283 dev->id->mtd_id, dev->num_parts);
1284 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1286 list_for_each(pentry, &dev->parts) {
1287 part = list_entry(pentry, struct part_info, link);
1288 printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
1289 part_num, part->name, part->size,
1290 part->offset, part->mask_flags);
1291 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1296 if (list_empty(&devices))
1297 printf("no partitions defined\n");
1301 * Format and print out a partition list for each device from global device
1304 static void list_partitions(void)
1306 struct part_info *part;
1308 debug("\n---list_partitions---\n");
1309 print_partition_table();
1311 /* current_mtd_dev is not NULL only when we have non empty device list */
1312 if (current_mtd_dev) {
1313 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1315 printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
1316 MTD_DEV_TYPE(current_mtd_dev->id->type),
1317 current_mtd_dev->id->num, current_mtd_partnum,
1318 part->name, part->size, part->offset);
1320 printf("could not get current partition info\n\n");
1324 printf("\ndefaults:\n");
1325 printf("mtdids : %s\n",
1326 mtdids_default ? mtdids_default : "none");
1328 * Using printf() here results in printbuffer overflow
1329 * if default mtdparts string is greater than console
1330 * printbuffer. Use puts() to prevent system crashes.
1333 puts(mtdparts_default ? mtdparts_default : "none");
1338 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1339 * corresponding device and verify partition number.
1341 * @param id string describing device and partition or partition name
1342 * @param dev pointer to the requested device (output)
1343 * @param part_num verified partition number (output)
1344 * @param part pointer to requested partition (output)
1345 * @return 0 on success, 1 otherwise
1347 int find_dev_and_part(const char *id, struct mtd_device **dev,
1348 u8 *part_num, struct part_info **part)
1350 struct list_head *dentry, *pentry;
1351 u8 type, dnum, pnum;
1354 debug("--- find_dev_and_part ---\nid = %s\n", id);
1356 list_for_each(dentry, &devices) {
1358 *dev = list_entry(dentry, struct mtd_device, link);
1359 list_for_each(pentry, &(*dev)->parts) {
1360 *part = list_entry(pentry, struct part_info, link);
1361 if (strcmp((*part)->name, id) == 0)
1372 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1375 if ((*p++ != ',') || (*p == '\0')) {
1376 printf("no partition number specified\n");
1379 pnum = simple_strtoul(p, (char **)&p, 0);
1381 printf("unexpected trailing character '%c'\n", *p);
1385 if ((*dev = device_find(type, dnum)) == NULL) {
1386 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1390 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1391 printf("no such partition\n");
1402 * Find and delete partition. For partition id format see find_dev_and_part().
1404 * @param id string describing device and partition
1405 * @return 0 on success, 1 otherwise
1407 static int delete_partition(const char *id)
1410 struct mtd_device *dev;
1411 struct part_info *part;
1413 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1415 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
1416 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1417 part->name, part->size, part->offset);
1419 if (part_del(dev, part) != 0)
1422 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1423 printf("generated mtdparts too long, resetting to null\n");
1429 printf("partition %s not found\n", id);
1433 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1435 * Increase the size of the given partition so that it's net size is at least
1436 * as large as the size member and such that the next partition would start on a
1437 * good block if it were adjacent to this partition.
1439 * @param mtd the mtd device
1440 * @param part the partition
1441 * @param next_offset pointer to the offset of the next partition after this
1442 * partition's size has been modified (output)
1444 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1445 uint64_t *next_offset)
1447 uint64_t net_size, padding_size = 0;
1450 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1454 * Absorb bad blocks immediately following this
1455 * partition also into the partition, such that
1456 * the next partition starts with a good block.
1459 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1460 mtd->erasesize, &padding_size, &truncated);
1464 padding_size -= mtd->erasesize;
1468 printf("truncated partition %s to %lld bytes\n", part->name,
1469 (uint64_t) net_size + padding_size);
1472 part->size = net_size + padding_size;
1473 *next_offset = part->offset + part->size;
1477 * Adjust all of the partition sizes, such that all partitions are at least
1478 * as big as their mtdparts environment variable sizes and they each start
1481 * @return 0 on success, 1 otherwise
1483 static int spread_partitions(void)
1485 struct list_head *dentry, *pentry;
1486 struct mtd_device *dev;
1487 struct part_info *part;
1488 struct mtd_info *mtd;
1492 list_for_each(dentry, &devices) {
1493 dev = list_entry(dentry, struct mtd_device, link);
1495 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1500 list_for_each(pentry, &dev->parts) {
1501 part = list_entry(pentry, struct part_info, link);
1503 debug("spread_partitions: device = %s%d, partition %d ="
1504 " (%s) 0x%08x@0x%08x\n",
1505 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1506 part_num, part->name, part->size,
1509 if (cur_offs > part->offset)
1510 part->offset = cur_offs;
1512 spread_partition(mtd, part, &cur_offs);
1520 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1521 printf("generated mtdparts too long, resetting to null\n");
1526 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1529 * Accept character string describing mtd partitions and call device_parse()
1530 * for each entry. Add created devices to the global devices list.
1532 * @param mtdparts string specifing mtd partitions
1533 * @return 0 on success, 1 otherwise
1535 static int parse_mtdparts(const char *const mtdparts)
1537 const char *p = mtdparts;
1538 struct mtd_device *dev;
1541 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
1543 /* delete all devices and partitions */
1544 if (mtd_devices_init() != 0) {
1545 printf("could not initialise device list\n");
1549 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1550 p = getenv("mtdparts");
1552 if (strncmp(p, "mtdparts=", 9) != 0) {
1553 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1558 while (p && (*p != '\0')) {
1560 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1563 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1564 dev->id->num, dev->id->mtd_id);
1566 /* check if parsed device is already on the list */
1567 if (device_find(dev->id->type, dev->id->num) != NULL) {
1568 printf("device %s%d redefined, please correct mtdparts variable\n",
1569 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1573 list_add_tail(&dev->link, &devices);
1577 device_delall(&devices);
1585 * Parse provided string describing mtdids mapping (see file header for mtdids
1586 * variable format). Allocate memory for each entry and add all found entries
1587 * to the global mtdids list.
1589 * @param ids mapping string
1590 * @return 0 on success, 1 otherwise
1592 static int parse_mtdids(const char *const ids)
1594 const char *p = ids;
1598 struct list_head *entry, *n;
1599 struct mtdids *id_tmp;
1604 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1606 /* clean global mtdids list */
1607 list_for_each_safe(entry, n, &mtdids) {
1608 id_tmp = list_entry(entry, struct mtdids, link);
1609 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1614 INIT_LIST_HEAD(&mtdids);
1616 while(p && (*p != '\0')) {
1619 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1620 if (mtd_id_parse(p, &p, &type, &num) != 0)
1624 printf("mtdids: incorrect <dev-num>\n");
1629 /* check if requested device exists */
1630 if (mtd_device_validate(type, num, &size) != 0)
1633 /* locate <mtd-id> */
1635 if ((p = strchr(mtd_id, ',')) != NULL) {
1636 mtd_id_len = p - mtd_id + 1;
1639 mtd_id_len = strlen(mtd_id) + 1;
1641 if (mtd_id_len == 0) {
1642 printf("mtdids: no <mtd-id> identifier\n");
1646 /* check if this id is already on the list */
1647 int double_entry = 0;
1648 list_for_each(entry, &mtdids) {
1649 id_tmp = list_entry(entry, struct mtdids, link);
1650 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1656 printf("device id %s%d redefined, please correct mtdids variable\n",
1657 MTD_DEV_TYPE(type), num);
1661 /* allocate mtdids structure */
1662 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1663 printf("out of memory\n");
1666 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1670 id->mtd_id = (char *)(id + 1);
1671 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1672 id->mtd_id[mtd_id_len - 1] = '\0';
1673 INIT_LIST_HEAD(&id->link);
1675 debug("+ id %s%d\t%16d bytes\t%s\n",
1676 MTD_DEV_TYPE(id->type), id->num,
1677 id->size, id->mtd_id);
1679 list_add_tail(&id->link, &mtdids);
1683 /* clean mtdids list and free allocated memory */
1684 list_for_each_safe(entry, n, &mtdids) {
1685 id_tmp = list_entry(entry, struct mtdids, link);
1696 * Parse and initialize global mtdids mapping and create global
1697 * device/partition list.
1699 * @return 0 on success, 1 otherwise
1701 int mtdparts_init(void)
1703 static int initialized = 0;
1704 const char *ids, *parts;
1705 const char *current_partition;
1707 char tmp_ep[PARTITION_MAXLEN];
1709 debug("\n---mtdparts_init---\n");
1711 INIT_LIST_HEAD(&mtdids);
1712 INIT_LIST_HEAD(&devices);
1713 memset(last_ids, 0, MTDIDS_MAXLEN);
1714 memset(last_parts, 0, MTDPARTS_MAXLEN);
1715 memset(last_partition, 0, PARTITION_MAXLEN);
1720 ids = getenv("mtdids");
1721 parts = getenv("mtdparts");
1722 current_partition = getenv("partition");
1724 /* save it for later parsing, cannot rely on current partition pointer
1725 * as 'partition' variable may be updated during init */
1727 if (current_partition)
1728 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1730 debug("last_ids : %s\n", last_ids);
1731 debug("env_ids : %s\n", ids);
1732 debug("last_parts: %s\n", last_parts);
1733 debug("env_parts : %s\n\n", parts);
1735 debug("last_partition : %s\n", last_partition);
1736 debug("env_partition : %s\n", current_partition);
1738 /* if mtdids varible is empty try to use defaults */
1740 if (mtdids_default) {
1741 debug("mtdids variable not defined, using default\n");
1742 ids = mtdids_default;
1743 setenv("mtdids", (char *)ids);
1745 printf("mtdids not defined, no default present\n");
1749 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1750 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1754 /* do no try to use defaults when mtdparts variable is not defined,
1755 * just check the length */
1757 printf("mtdparts variable not set, see 'help mtdparts'\n");
1759 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1760 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1764 /* check if we have already parsed those mtdids */
1765 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1770 if (parse_mtdids(ids) != 0) {
1775 /* ok it's good, save new ids */
1776 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1779 /* parse partitions if either mtdparts or mtdids were updated */
1780 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1781 if (parse_mtdparts(parts) != 0)
1784 if (list_empty(&devices)) {
1785 printf("mtdparts_init: no valid partitions\n");
1789 /* ok it's good, save new parts */
1790 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1792 /* reset first partition from first dev from the list as current */
1793 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1794 current_mtd_partnum = 0;
1797 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1798 MTD_DEV_TYPE(current_mtd_dev->id->type),
1799 current_mtd_dev->id->num, current_mtd_partnum);
1802 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1803 if (!parts && (last_parts[0] != '\0'))
1804 return mtd_devices_init();
1806 /* do not process current partition if mtdparts variable is null */
1810 /* is current partition set in environment? if so, use it */
1811 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1812 struct part_info *p;
1813 struct mtd_device *cdev;
1816 debug("--- getting current partition: %s\n", tmp_ep);
1818 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1819 current_mtd_dev = cdev;
1820 current_mtd_partnum = pnum;
1823 } else if (getenv("partition") == NULL) {
1824 debug("no partition variable set, setting...\n");
1832 * Return pointer to the partition of a requested number from a requested
1835 * @param dev device that is to be searched for a partition
1836 * @param part_num requested partition number
1837 * @return pointer to the part_info, NULL otherwise
1839 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1841 struct list_head *entry;
1842 struct part_info *part;
1848 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1849 part_num, MTD_DEV_TYPE(dev->id->type),
1850 dev->id->num, dev->id->mtd_id);
1852 if (part_num >= dev->num_parts) {
1853 printf("invalid partition number %d for device %s%d (%s)\n",
1854 part_num, MTD_DEV_TYPE(dev->id->type),
1855 dev->id->num, dev->id->mtd_id);
1859 /* locate partition number, return it */
1861 list_for_each(entry, &dev->parts) {
1862 part = list_entry(entry, struct part_info, link);
1864 if (part_num == num++) {
1872 /***************************************************/
1873 /* U-boot commands */
1874 /***************************************************/
1875 /* command line only */
1877 * Routine implementing u-boot chpart command. Sets new current partition based
1878 * on the user supplied partition id. For partition id format see find_dev_and_part().
1880 * @param cmdtp command internal data
1881 * @param flag command flag
1882 * @param argc number of arguments supplied to the command
1883 * @param argv arguments list
1884 * @return 0 on success, 1 otherwise
1886 static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1888 /* command line only */
1889 struct mtd_device *dev;
1890 struct part_info *part;
1893 if (mtdparts_init() !=0)
1897 printf("no partition id specified\n");
1901 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1904 current_mtd_dev = dev;
1905 current_mtd_partnum = pnum;
1908 printf("partition changed to %s%d,%d\n",
1909 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1915 * Routine implementing u-boot mtdparts command. Initialize/update default global
1916 * partition list and process user partition request (list, add, del).
1918 * @param cmdtp command internal data
1919 * @param flag command flag
1920 * @param argc number of arguments supplied to the command
1921 * @param argv arguments list
1922 * @return 0 on success, 1 otherwise
1924 static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1925 char * const argv[])
1928 if (strcmp(argv[1], "default") == 0) {
1929 setenv("mtdids", (char *)mtdids_default);
1930 setenv("mtdparts", (char *)mtdparts_default);
1931 setenv("partition", NULL);
1935 } else if (strcmp(argv[1], "delall") == 0) {
1936 /* this may be the first run, initialize lists if needed */
1939 setenv("mtdparts", NULL);
1941 /* mtd_devices_init() calls current_save() */
1942 return mtd_devices_init();
1946 /* make sure we are in sync with env variables */
1947 if (mtdparts_init() != 0)
1955 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1956 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1957 #define PART_ADD_DESC_MAXLEN 64
1958 char tmpbuf[PART_ADD_DESC_MAXLEN];
1959 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1960 struct mtd_info *mtd;
1961 uint64_t next_offset;
1964 struct mtd_device *dev;
1965 struct mtd_device *dev_tmp;
1967 struct part_info *p;
1969 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1972 if ((id = id_find(type, num)) == NULL) {
1973 printf("no such device %s defined in mtdids variable\n", argv[2]);
1977 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1978 len += strlen(argv[3]); /* size@offset */
1979 len += strlen(argv[4]) + 2; /* '(' name ')' */
1980 if (argv[5] && (strlen(argv[5]) == 2))
1981 len += 2; /* 'ro' */
1983 if (len >= PART_ADD_DESC_MAXLEN) {
1984 printf("too long partition description\n");
1987 sprintf(tmpbuf, "%s:%s(%s)%s",
1988 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
1989 debug("add tmpbuf: %s\n", tmpbuf);
1991 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
1994 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1995 dev->id->num, dev->id->mtd_id);
1997 p = list_entry(dev->parts.next, struct part_info, link);
1999 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2000 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2003 if (!strcmp(&argv[1][3], ".spread")) {
2004 spread_partition(mtd, p, &next_offset);
2005 debug("increased %s to %d bytes\n", p->name, p->size);
2009 dev_tmp = device_find(dev->id->type, dev->id->num);
2010 if (dev_tmp == NULL) {
2012 } else if (part_add(dev_tmp, p) != 0) {
2013 /* merge new partition with existing ones*/
2018 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2019 printf("generated mtdparts too long, resetting to null\n");
2026 /* mtdparts del part-id */
2027 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2028 debug("del: part-id = %s\n", argv[2]);
2030 return delete_partition(argv[2]);
2033 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2034 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2035 return spread_partitions();
2036 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2038 return CMD_RET_USAGE;
2041 /***************************************************/
2043 chpart, 2, 0, do_chpart,
2044 "change active partition",
2046 " - change active partition (e.g. part-id = nand0,1)"
2049 #ifdef CONFIG_SYS_LONGHELP
2050 static char mtdparts_help_text[] =
2052 " - list partition table\n"
2054 " - delete all partitions\n"
2055 "mtdparts del part-id\n"
2056 " - delete partition (e.g. part-id = nand0,1)\n"
2057 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2058 " - add partition\n"
2059 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2060 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2061 " - add partition, padding size by skipping bad blocks\n"
2063 "mtdparts default\n"
2064 " - reset partition table to defaults\n"
2065 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2067 " - adjust the sizes of the partitions so they are\n"
2068 " at least as big as the mtdparts variable specifies\n"
2069 " and they each start on a good block\n\n"
2072 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2074 "this command uses three environment variables:\n\n"
2075 "'partition' - keeps current partition identifier\n\n"
2076 "partition := <part-id>\n"
2077 "<part-id> := <dev-id>,part_num\n\n"
2078 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2079 "mtdids=<idmap>[,<idmap>,...]\n\n"
2080 "<idmap> := <dev-id>=<mtd-id>\n"
2081 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2082 "<dev-num> := mtd device number, 0...\n"
2083 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2084 "'mtdparts' - partition list\n\n"
2085 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2086 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2087 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2088 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2089 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2090 "<offset> := partition start offset within the device\n"
2091 "<name> := '(' NAME ')'\n"
2092 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2096 mtdparts, 6, 0, do_mtdparts,
2097 "define flash/nand partitions", mtdparts_help_text
2099 /***************************************************/