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)
235 struct part_info *part;
236 struct list_head *dentry;
237 struct mtd_device *dev;
239 debug("--- index partitions ---\n");
241 if (current_mtd_dev) {
243 list_for_each(dentry, &devices) {
244 dev = list_entry(dentry, struct mtd_device, link);
245 if (dev == current_mtd_dev) {
246 mtddevnum += current_mtd_partnum;
247 sprintf(buf, "%d", mtddevnum);
248 setenv("mtddevnum", buf);
251 mtddevnum += dev->num_parts;
254 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
255 setenv("mtddevname", part->name);
257 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
259 setenv("mtddevnum", NULL);
260 setenv("mtddevname", NULL);
262 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
267 * Save current device and partition in environment variable 'partition'.
269 static void current_save(void)
273 debug("--- current_save ---\n");
275 if (current_mtd_dev) {
276 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
277 current_mtd_dev->id->num, current_mtd_partnum);
279 setenv("partition", buf);
280 strncpy(last_partition, buf, 16);
282 debug("=> partition %s\n", buf);
284 setenv("partition", NULL);
285 last_partition[0] = '\0';
287 debug("=> partition NULL\n");
294 * Produce a mtd_info given a type and num.
296 * @param type mtd type
297 * @param num mtd number
298 * @param mtd a pointer to an mtd_info instance (output)
299 * @return 0 if device is valid, 1 otherwise
301 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
305 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
306 *mtd = get_mtd_device_nm(mtd_dev);
308 printf("Device %s not found!\n", mtd_dev);
316 * Performs sanity check for supplied flash partition.
317 * Table of existing MTD flash devices is searched and partition device
318 * is located. Alignment with the granularity of nand erasesize is verified.
320 * @param id of the parent device
321 * @param part partition to validate
322 * @return 0 if partition is valid, 1 otherwise
324 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
326 struct mtd_info *mtd = NULL;
330 if (get_mtd_info(id->type, id->num, &mtd))
333 part->sector_size = mtd->erasesize;
335 if (!mtd->numeraseregions) {
337 * Only one eraseregion (NAND, OneNAND or uniform NOR),
338 * checking for alignment is easy here
340 if ((unsigned long)part->offset % mtd->erasesize) {
341 printf("%s%d: partition (%s) start offset"
342 "alignment incorrect\n",
343 MTD_DEV_TYPE(id->type), id->num, part->name);
347 if (part->size % mtd->erasesize) {
348 printf("%s%d: partition (%s) size alignment incorrect\n",
349 MTD_DEV_TYPE(id->type), id->num, part->name);
354 * Multiple eraseregions (non-uniform NOR),
355 * checking for alignment is more complex here
358 /* Check start alignment */
359 for (i = 0; i < mtd->numeraseregions; i++) {
360 start = mtd->eraseregions[i].offset;
361 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
362 if (part->offset == start)
364 start += mtd->eraseregions[i].erasesize;
368 printf("%s%d: partition (%s) start offset alignment incorrect\n",
369 MTD_DEV_TYPE(id->type), id->num, part->name);
374 /* Check end/size alignment */
375 for (i = 0; i < mtd->numeraseregions; i++) {
376 start = mtd->eraseregions[i].offset;
377 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
378 if ((part->offset + part->size) == start)
380 start += mtd->eraseregions[i].erasesize;
383 /* Check last sector alignment */
384 if ((part->offset + part->size) == start)
387 printf("%s%d: partition (%s) size alignment incorrect\n",
388 MTD_DEV_TYPE(id->type), id->num, part->name);
400 * Performs sanity check for supplied partition. Offset and size are verified
401 * to be within valid range. Partition type is checked and either
402 * parts_validate_nor() or parts_validate_nand() is called with the argument
405 * @param id of the parent device
406 * @param part partition to validate
407 * @return 0 if partition is valid, 1 otherwise
409 static int part_validate(struct mtdids *id, struct part_info *part)
411 if (part->size == SIZE_REMAINING)
412 part->size = id->size - part->offset;
414 if (part->offset > id->size) {
415 printf("%s: offset %08x beyond flash size %08x\n",
416 id->mtd_id, part->offset, id->size);
420 if ((part->offset + part->size) <= part->offset) {
421 printf("%s%d: partition (%s) size too big\n",
422 MTD_DEV_TYPE(id->type), id->num, part->name);
426 if (part->offset + part->size > id->size) {
427 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
432 * Now we need to check if the partition starts and ends on
433 * sector (eraseblock) regions
435 return part_validate_eraseblock(id, part);
439 * Delete selected partition from the partion list of the specified device.
441 * @param dev device to delete partition from
442 * @param part partition to delete
443 * @return 0 on success, 1 otherwise
445 static int part_del(struct mtd_device *dev, struct part_info *part)
447 u8 current_save_needed = 0;
449 /* if there is only one partition, remove whole device */
450 if (dev->num_parts == 1)
451 return device_del(dev);
453 /* otherwise just delete this partition */
455 if (dev == current_mtd_dev) {
456 /* we are modyfing partitions for the current device,
458 struct part_info *curr_pi;
459 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
462 if (curr_pi == part) {
463 printf("current partition deleted, resetting current to 0\n");
464 current_mtd_partnum = 0;
465 } else if (part->offset <= curr_pi->offset) {
466 current_mtd_partnum--;
468 current_save_needed = 1;
472 list_del(&part->link);
476 if (current_save_needed > 0)
485 * Delete all partitions from parts head list, free memory.
487 * @param head list of partitions to delete
489 static void part_delall(struct list_head *head)
491 struct list_head *entry, *n;
492 struct part_info *part_tmp;
494 /* clean tmp_list and free allocated memory */
495 list_for_each_safe(entry, n, head) {
496 part_tmp = list_entry(entry, struct part_info, link);
504 * Add new partition to the supplied partition list. Make sure partitions are
505 * sorted by offset in ascending order.
507 * @param head list this partition is to be added to
508 * @param new partition to be added
510 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
512 struct list_head *entry;
513 struct part_info *new_pi, *curr_pi;
515 /* link partition to parrent dev */
518 if (list_empty(&dev->parts)) {
519 debug("part_sort_add: list empty\n");
520 list_add(&part->link, &dev->parts);
526 new_pi = list_entry(&part->link, struct part_info, link);
528 /* get current partition info if we are updating current device */
530 if (dev == current_mtd_dev)
531 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
533 list_for_each(entry, &dev->parts) {
534 struct part_info *pi;
536 pi = list_entry(entry, struct part_info, link);
538 /* be compliant with kernel cmdline, allow only one partition at offset zero */
539 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
540 printf("cannot add second partition at offset 0\n");
544 if (new_pi->offset <= pi->offset) {
545 list_add_tail(&part->link, entry);
548 if (curr_pi && (pi->offset <= curr_pi->offset)) {
549 /* we are modyfing partitions for the current
550 * device, update current */
551 current_mtd_partnum++;
560 list_add_tail(&part->link, &dev->parts);
567 * Add provided partition to the partition list of a given device.
569 * @param dev device to which partition is added
570 * @param part partition to be added
571 * @return 0 on success, 1 otherwise
573 static int part_add(struct mtd_device *dev, struct part_info *part)
575 /* verify alignment and size */
576 if (part_validate(dev->id, part) != 0)
579 /* partition is ok, add it to the list */
580 if (part_sort_add(dev, part) != 0)
587 * Parse one partition definition, allocate memory and return pointer to this
588 * location in retpart.
590 * @param partdef pointer to the partition definition string i.e. <part-def>
591 * @param ret output pointer to next char after parse completes (output)
592 * @param retpart pointer to the allocated partition (output)
593 * @return 0 on success, 1 otherwise
595 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
597 struct part_info *part;
599 unsigned long offset;
602 unsigned int mask_flags;
609 /* fetch the partition size */
611 /* assign all remaining space to this partition */
612 debug("'-': remaining size assigned\n");
613 size = SIZE_REMAINING;
616 size = memsize_parse(p, &p);
617 if (size < MIN_PART_SIZE) {
618 printf("partition size too small (%lx)\n", size);
623 /* check for offset */
624 offset = OFFSET_NOT_SPECIFIED;
627 offset = memsize_parse(p, &p);
630 /* now look for the name */
633 if ((p = strchr(name, ')')) == NULL) {
634 printf("no closing ) found in partition name\n");
637 name_len = p - name + 1;
638 if ((name_len - 1) == 0) {
639 printf("empty partition name\n");
644 /* 0x00000000@0x00000000 */
649 /* test for options */
651 if (strncmp(p, "ro", 2) == 0) {
652 mask_flags |= MTD_WRITEABLE_CMD;
656 /* check for next partition definition */
658 if (size == SIZE_REMAINING) {
660 printf("no partitions allowed after a fill-up partition\n");
664 } else if ((*p == ';') || (*p == '\0')) {
667 printf("unexpected character '%c' at the end of partition\n", *p);
672 /* allocate memory */
673 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
675 printf("out of memory\n");
678 memset(part, 0, sizeof(struct part_info) + name_len);
680 part->offset = offset;
681 part->mask_flags = mask_flags;
682 part->name = (char *)(part + 1);
685 /* copy user provided name */
686 strncpy(part->name, name, name_len - 1);
689 /* auto generated name in form of size@offset */
690 sprintf(part->name, "0x%08lx@0x%08lx", size, offset);
694 part->name[name_len - 1] = '\0';
695 INIT_LIST_HEAD(&part->link);
697 debug("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
698 part->name, part->size,
699 part->offset, part->mask_flags);
706 * Check device number to be within valid range for given device type.
708 * @param type mtd type
709 * @param num mtd number
710 * @param size a pointer to the size of the mtd device (output)
711 * @return 0 if device is valid, 1 otherwise
713 static int mtd_device_validate(u8 type, u8 num, u32 *size)
715 struct mtd_info *mtd = NULL;
717 if (get_mtd_info(type, num, &mtd))
726 * Delete all mtd devices from a supplied devices list, free memory allocated for
727 * each device and delete all device partitions.
729 * @return 0 on success, 1 otherwise
731 static int device_delall(struct list_head *head)
733 struct list_head *entry, *n;
734 struct mtd_device *dev_tmp;
736 /* clean devices list */
737 list_for_each_safe(entry, n, head) {
738 dev_tmp = list_entry(entry, struct mtd_device, link);
740 part_delall(&dev_tmp->parts);
743 INIT_LIST_HEAD(&devices);
749 * If provided device exists it's partitions are deleted, device is removed
750 * from device list and device memory is freed.
752 * @param dev device to be deleted
753 * @return 0 on success, 1 otherwise
755 static int device_del(struct mtd_device *dev)
757 part_delall(&dev->parts);
758 list_del(&dev->link);
761 if (dev == current_mtd_dev) {
762 /* we just deleted current device */
763 if (list_empty(&devices)) {
764 current_mtd_dev = NULL;
766 /* reset first partition from first dev from the
767 * devices list as current */
768 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
769 current_mtd_partnum = 0;
780 * Search global device list and return pointer to the device of type and num
783 * @param type device type
784 * @param num device number
785 * @return NULL if requested device does not exist
787 struct mtd_device *device_find(u8 type, u8 num)
789 struct list_head *entry;
790 struct mtd_device *dev_tmp;
792 list_for_each(entry, &devices) {
793 dev_tmp = list_entry(entry, struct mtd_device, link);
795 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
803 * Add specified device to the global device list.
805 * @param dev device to be added
807 static void device_add(struct mtd_device *dev)
809 u8 current_save_needed = 0;
811 if (list_empty(&devices)) {
812 current_mtd_dev = dev;
813 current_mtd_partnum = 0;
814 current_save_needed = 1;
817 list_add_tail(&dev->link, &devices);
819 if (current_save_needed > 0)
826 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
827 * return pointer to the device structure.
829 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
830 * @param ret output pointer to next char after parse completes (output)
831 * @param retdev pointer to the allocated device (output)
832 * @return 0 on success, 1 otherwise
834 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
836 struct mtd_device *dev;
837 struct part_info *part;
840 unsigned int mtd_id_len;
844 struct list_head *entry, *n;
849 debug("===device_parse===\n");
858 mtd_id = p = mtd_dev;
859 if (!(p = strchr(mtd_id, ':'))) {
860 printf("no <mtd-id> identifier\n");
863 mtd_id_len = p - mtd_id + 1;
866 /* verify if we have a valid device specified */
867 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
868 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
873 pend = strchr(p, ';');
875 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
876 id->type, MTD_DEV_TYPE(id->type),
877 id->num, id->mtd_id);
878 debug("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p);
881 /* parse partitions */
885 if ((dev = device_find(id->type, id->num)) != NULL) {
886 /* if device already exists start at the end of the last partition */
887 part = list_entry(dev->parts.prev, struct part_info, link);
888 offset = part->offset + part->size;
891 while (p && (*p != '\0') && (*p != ';')) {
893 if ((part_parse(p, &p, &part) != 0) || (!part))
896 /* calculate offset when not specified */
897 if (part->offset == OFFSET_NOT_SPECIFIED)
898 part->offset = offset;
900 offset = part->offset;
902 /* verify alignment and size */
903 if (part_validate(id, part) != 0)
906 offset += part->size;
908 /* partition is ok, add it to the list */
909 list_add_tail(&part->link, &tmp_list);
914 part_delall(&tmp_list);
918 if (num_parts == 0) {
919 printf("no partitions for device %s%d (%s)\n",
920 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
924 debug("\ntotal partitions: %d\n", num_parts);
926 /* check for next device presence */
931 } else if (*p == '\0') {
935 printf("unexpected character '%c' at the end of device\n", *p);
942 /* allocate memory for mtd_device structure */
943 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
944 printf("out of memory\n");
947 memset(dev, 0, sizeof(struct mtd_device));
949 dev->num_parts = 0; /* part_sort_add increments num_parts */
950 INIT_LIST_HEAD(&dev->parts);
951 INIT_LIST_HEAD(&dev->link);
953 /* move partitions from tmp_list to dev->parts */
954 list_for_each_safe(entry, n, &tmp_list) {
955 part = list_entry(entry, struct part_info, link);
957 if (part_sort_add(dev, part) != 0) {
970 * Initialize global device list.
972 * @return 0 on success, 1 otherwise
974 static int mtd_devices_init(void)
976 last_parts[0] = '\0';
977 current_mtd_dev = NULL;
980 return device_delall(&devices);
984 * Search global mtdids list and find id of requested type and number.
986 * @return pointer to the id if it exists, NULL otherwise
988 static struct mtdids* id_find(u8 type, u8 num)
990 struct list_head *entry;
993 list_for_each(entry, &mtdids) {
994 id = list_entry(entry, struct mtdids, link);
996 if ((id->type == type) && (id->num == num))
1004 * Search global mtdids list and find id of a requested mtd_id.
1006 * Note: first argument is not null terminated.
1008 * @param mtd_id string containing requested mtd_id
1009 * @param mtd_id_len length of supplied mtd_id
1010 * @return pointer to the id if it exists, NULL otherwise
1012 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1014 struct list_head *entry;
1017 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1018 mtd_id_len, mtd_id, mtd_id_len);
1020 list_for_each(entry, &mtdids) {
1021 id = list_entry(entry, struct mtdids, link);
1023 debug("entry: '%s' (len = %d)\n",
1024 id->mtd_id, strlen(id->mtd_id));
1026 if (mtd_id_len != strlen(id->mtd_id))
1028 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1036 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1037 * return device type and number.
1039 * @param id string describing device id
1040 * @param ret_id output pointer to next char after parse completes (output)
1041 * @param dev_type parsed device type (output)
1042 * @param dev_num parsed device number (output)
1043 * @return 0 on success, 1 otherwise
1045 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1051 if (strncmp(p, "nand", 4) == 0) {
1052 *dev_type = MTD_DEV_TYPE_NAND;
1054 } else if (strncmp(p, "nor", 3) == 0) {
1055 *dev_type = MTD_DEV_TYPE_NOR;
1057 } else if (strncmp(p, "onenand", 7) == 0) {
1058 *dev_type = MTD_DEV_TYPE_ONENAND;
1061 printf("incorrect device type in %s\n", id);
1066 printf("incorrect device number in %s\n", id);
1070 *dev_num = simple_strtoul(p, (char **)&p, 0);
1077 * Process all devices and generate corresponding mtdparts string describing
1078 * all partitions on all devices.
1080 * @param buf output buffer holding generated mtdparts string (output)
1081 * @param buflen buffer size
1082 * @return 0 on success, 1 otherwise
1084 static int generate_mtdparts(char *buf, u32 buflen)
1086 struct list_head *pentry, *dentry;
1087 struct mtd_device *dev;
1088 struct part_info *part, *prev_part;
1091 u32 size, offset, len, part_cnt;
1092 u32 maxlen = buflen - 1;
1094 debug("--- generate_mtdparts ---\n");
1096 if (list_empty(&devices)) {
1101 sprintf(p, "mtdparts=");
1104 list_for_each(dentry, &devices) {
1105 dev = list_entry(dentry, struct mtd_device, link);
1108 len = strlen(dev->id->mtd_id) + 1;
1111 memcpy(p, dev->id->mtd_id, len - 1);
1116 /* format partitions */
1119 list_for_each(pentry, &dev->parts) {
1120 part = list_entry(pentry, struct part_info, link);
1122 offset = part->offset;
1125 /* partition size */
1126 memsize_format(tmpbuf, size);
1127 len = strlen(tmpbuf);
1130 memcpy(p, tmpbuf, len);
1135 /* add offset only when there is a gap between
1137 if ((!prev_part && (offset != 0)) ||
1138 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1140 memsize_format(tmpbuf, offset);
1141 len = strlen(tmpbuf) + 1;
1145 memcpy(p, tmpbuf, len - 1);
1150 /* copy name only if user supplied */
1151 if(!part->auto_name) {
1152 len = strlen(part->name) + 2;
1157 memcpy(p, part->name, len - 2);
1164 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1173 /* print ',' separator if there are other partitions
1175 if (dev->num_parts > part_cnt) {
1183 /* print ';' separator if there are other devices following */
1184 if (dentry->next != &devices) {
1192 /* we still have at least one char left, as we decremented maxlen at
1199 last_parts[0] = '\0';
1204 * Call generate_mtdparts to process all devices and generate corresponding
1205 * mtdparts string, save it in mtdparts environment variable.
1207 * @param buf output buffer holding generated mtdparts string (output)
1208 * @param buflen buffer size
1209 * @return 0 on success, 1 otherwise
1211 static int generate_mtdparts_save(char *buf, u32 buflen)
1215 ret = generate_mtdparts(buf, buflen);
1217 if ((buf[0] != '\0') && (ret == 0))
1218 setenv("mtdparts", buf);
1220 setenv("mtdparts", NULL);
1225 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1227 * Get the net size (w/o bad blocks) of the given partition.
1229 * @param mtd the mtd info
1230 * @param part the partition
1231 * @return the calculated net size of this partition
1233 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1235 uint64_t i, net_size = 0;
1237 if (!mtd->block_isbad)
1240 for (i = 0; i < part->size; i += mtd->erasesize) {
1241 if (!mtd->block_isbad(mtd, part->offset + i))
1242 net_size += mtd->erasesize;
1249 static void print_partition_table(void)
1251 struct list_head *dentry, *pentry;
1252 struct part_info *part;
1253 struct mtd_device *dev;
1256 list_for_each(dentry, &devices) {
1257 dev = list_entry(dentry, struct mtd_device, link);
1258 /* list partitions for given device */
1260 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1261 struct mtd_info *mtd;
1263 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1266 printf("\ndevice %s%d <%s>, # parts = %d\n",
1267 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1268 dev->id->mtd_id, dev->num_parts);
1269 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1271 list_for_each(pentry, &dev->parts) {
1275 part = list_entry(pentry, struct part_info, link);
1276 net_size = net_part_size(mtd, part);
1277 size_note = part->size == net_size ? " " : " (!)";
1278 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1279 part_num, part->name, part->size,
1280 net_size, size_note, part->offset,
1282 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1283 printf("\ndevice %s%d <%s>, # parts = %d\n",
1284 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1285 dev->id->mtd_id, dev->num_parts);
1286 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1288 list_for_each(pentry, &dev->parts) {
1289 part = list_entry(pentry, struct part_info, link);
1290 printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
1291 part_num, part->name, part->size,
1292 part->offset, part->mask_flags);
1293 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1298 if (list_empty(&devices))
1299 printf("no partitions defined\n");
1303 * Format and print out a partition list for each device from global device
1306 static void list_partitions(void)
1308 struct part_info *part;
1310 debug("\n---list_partitions---\n");
1311 print_partition_table();
1313 /* current_mtd_dev is not NULL only when we have non empty device list */
1314 if (current_mtd_dev) {
1315 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1317 printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
1318 MTD_DEV_TYPE(current_mtd_dev->id->type),
1319 current_mtd_dev->id->num, current_mtd_partnum,
1320 part->name, part->size, part->offset);
1322 printf("could not get current partition info\n\n");
1326 printf("\ndefaults:\n");
1327 printf("mtdids : %s\n",
1328 mtdids_default ? mtdids_default : "none");
1330 * Using printf() here results in printbuffer overflow
1331 * if default mtdparts string is greater than console
1332 * printbuffer. Use puts() to prevent system crashes.
1335 puts(mtdparts_default ? mtdparts_default : "none");
1340 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1341 * corresponding device and verify partition number.
1343 * @param id string describing device and partition or partition name
1344 * @param dev pointer to the requested device (output)
1345 * @param part_num verified partition number (output)
1346 * @param part pointer to requested partition (output)
1347 * @return 0 on success, 1 otherwise
1349 int find_dev_and_part(const char *id, struct mtd_device **dev,
1350 u8 *part_num, struct part_info **part)
1352 struct list_head *dentry, *pentry;
1353 u8 type, dnum, pnum;
1356 debug("--- find_dev_and_part ---\nid = %s\n", id);
1358 list_for_each(dentry, &devices) {
1360 *dev = list_entry(dentry, struct mtd_device, link);
1361 list_for_each(pentry, &(*dev)->parts) {
1362 *part = list_entry(pentry, struct part_info, link);
1363 if (strcmp((*part)->name, id) == 0)
1374 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1377 if ((*p++ != ',') || (*p == '\0')) {
1378 printf("no partition number specified\n");
1381 pnum = simple_strtoul(p, (char **)&p, 0);
1383 printf("unexpected trailing character '%c'\n", *p);
1387 if ((*dev = device_find(type, dnum)) == NULL) {
1388 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1392 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1393 printf("no such partition\n");
1404 * Find and delete partition. For partition id format see find_dev_and_part().
1406 * @param id string describing device and partition
1407 * @return 0 on success, 1 otherwise
1409 static int delete_partition(const char *id)
1412 struct mtd_device *dev;
1413 struct part_info *part;
1415 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1417 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
1418 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1419 part->name, part->size, part->offset);
1421 if (part_del(dev, part) != 0)
1424 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1425 printf("generated mtdparts too long, reseting to null\n");
1431 printf("partition %s not found\n", id);
1435 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1437 * Increase the size of the given partition so that it's net size is at least
1438 * as large as the size member and such that the next partition would start on a
1439 * good block if it were adjacent to this partition.
1441 * @param mtd the mtd device
1442 * @param part the partition
1443 * @param next_offset pointer to the offset of the next partition after this
1444 * partition's size has been modified (output)
1446 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1447 uint64_t *next_offset)
1449 uint64_t net_size, padding_size = 0;
1452 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1456 * Absorb bad blocks immediately following this
1457 * partition also into the partition, such that
1458 * the next partition starts with a good block.
1461 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1462 mtd->erasesize, &padding_size, &truncated);
1466 padding_size -= mtd->erasesize;
1470 printf("truncated partition %s to %lld bytes\n", part->name,
1471 (uint64_t) net_size + padding_size);
1474 part->size = net_size + padding_size;
1475 *next_offset = part->offset + part->size;
1479 * Adjust all of the partition sizes, such that all partitions are at least
1480 * as big as their mtdparts environment variable sizes and they each start
1483 * @return 0 on success, 1 otherwise
1485 static int spread_partitions(void)
1487 struct list_head *dentry, *pentry;
1488 struct mtd_device *dev;
1489 struct part_info *part;
1490 struct mtd_info *mtd;
1494 list_for_each(dentry, &devices) {
1495 dev = list_entry(dentry, struct mtd_device, link);
1497 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1502 list_for_each(pentry, &dev->parts) {
1503 part = list_entry(pentry, struct part_info, link);
1505 debug("spread_partitions: device = %s%d, partition %d ="
1506 " (%s) 0x%08x@0x%08x\n",
1507 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1508 part_num, part->name, part->size,
1511 if (cur_offs > part->offset)
1512 part->offset = cur_offs;
1514 spread_partition(mtd, part, &cur_offs);
1522 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1523 printf("generated mtdparts too long, reseting to null\n");
1528 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1531 * Accept character string describing mtd partitions and call device_parse()
1532 * for each entry. Add created devices to the global devices list.
1534 * @param mtdparts string specifing mtd partitions
1535 * @return 0 on success, 1 otherwise
1537 static int parse_mtdparts(const char *const mtdparts)
1539 const char *p = mtdparts;
1540 struct mtd_device *dev;
1543 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
1545 /* delete all devices and partitions */
1546 if (mtd_devices_init() != 0) {
1547 printf("could not initialise device list\n");
1551 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1552 p = getenv("mtdparts");
1554 if (strncmp(p, "mtdparts=", 9) != 0) {
1555 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1560 while (p && (*p != '\0')) {
1562 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1565 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1566 dev->id->num, dev->id->mtd_id);
1568 /* check if parsed device is already on the list */
1569 if (device_find(dev->id->type, dev->id->num) != NULL) {
1570 printf("device %s%d redefined, please correct mtdparts variable\n",
1571 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1575 list_add_tail(&dev->link, &devices);
1579 device_delall(&devices);
1587 * Parse provided string describing mtdids mapping (see file header for mtdids
1588 * variable format). Allocate memory for each entry and add all found entries
1589 * to the global mtdids list.
1591 * @param ids mapping string
1592 * @return 0 on success, 1 otherwise
1594 static int parse_mtdids(const char *const ids)
1596 const char *p = ids;
1600 struct list_head *entry, *n;
1601 struct mtdids *id_tmp;
1606 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1608 /* clean global mtdids list */
1609 list_for_each_safe(entry, n, &mtdids) {
1610 id_tmp = list_entry(entry, struct mtdids, link);
1611 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1616 INIT_LIST_HEAD(&mtdids);
1618 while(p && (*p != '\0')) {
1621 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1622 if (mtd_id_parse(p, &p, &type, &num) != 0)
1626 printf("mtdids: incorrect <dev-num>\n");
1631 /* check if requested device exists */
1632 if (mtd_device_validate(type, num, &size) != 0)
1635 /* locate <mtd-id> */
1637 if ((p = strchr(mtd_id, ',')) != NULL) {
1638 mtd_id_len = p - mtd_id + 1;
1641 mtd_id_len = strlen(mtd_id) + 1;
1643 if (mtd_id_len == 0) {
1644 printf("mtdids: no <mtd-id> identifier\n");
1648 /* check if this id is already on the list */
1649 int double_entry = 0;
1650 list_for_each(entry, &mtdids) {
1651 id_tmp = list_entry(entry, struct mtdids, link);
1652 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1658 printf("device id %s%d redefined, please correct mtdids variable\n",
1659 MTD_DEV_TYPE(type), num);
1663 /* allocate mtdids structure */
1664 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1665 printf("out of memory\n");
1668 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1672 id->mtd_id = (char *)(id + 1);
1673 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1674 id->mtd_id[mtd_id_len - 1] = '\0';
1675 INIT_LIST_HEAD(&id->link);
1677 debug("+ id %s%d\t%16d bytes\t%s\n",
1678 MTD_DEV_TYPE(id->type), id->num,
1679 id->size, id->mtd_id);
1681 list_add_tail(&id->link, &mtdids);
1685 /* clean mtdids list and free allocated memory */
1686 list_for_each_safe(entry, n, &mtdids) {
1687 id_tmp = list_entry(entry, struct mtdids, link);
1698 * Parse and initialize global mtdids mapping and create global
1699 * device/partition list.
1701 * @return 0 on success, 1 otherwise
1703 int mtdparts_init(void)
1705 static int initialized = 0;
1706 const char *ids, *parts;
1707 const char *current_partition;
1709 char tmp_ep[PARTITION_MAXLEN];
1711 debug("\n---mtdparts_init---\n");
1713 INIT_LIST_HEAD(&mtdids);
1714 INIT_LIST_HEAD(&devices);
1715 memset(last_ids, 0, MTDIDS_MAXLEN);
1716 memset(last_parts, 0, MTDPARTS_MAXLEN);
1717 memset(last_partition, 0, PARTITION_MAXLEN);
1722 ids = getenv("mtdids");
1723 parts = getenv("mtdparts");
1724 current_partition = getenv("partition");
1726 /* save it for later parsing, cannot rely on current partition pointer
1727 * as 'partition' variable may be updated during init */
1729 if (current_partition)
1730 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1732 debug("last_ids : %s\n", last_ids);
1733 debug("env_ids : %s\n", ids);
1734 debug("last_parts: %s\n", last_parts);
1735 debug("env_parts : %s\n\n", parts);
1737 debug("last_partition : %s\n", last_partition);
1738 debug("env_partition : %s\n", current_partition);
1740 /* if mtdids varible is empty try to use defaults */
1742 if (mtdids_default) {
1743 debug("mtdids variable not defined, using default\n");
1744 ids = mtdids_default;
1745 setenv("mtdids", (char *)ids);
1747 printf("mtdids not defined, no default present\n");
1751 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1752 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1756 /* do no try to use defaults when mtdparts variable is not defined,
1757 * just check the length */
1759 printf("mtdparts variable not set, see 'help mtdparts'\n");
1761 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1762 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1766 /* check if we have already parsed those mtdids */
1767 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1772 if (parse_mtdids(ids) != 0) {
1777 /* ok it's good, save new ids */
1778 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1781 /* parse partitions if either mtdparts or mtdids were updated */
1782 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1783 if (parse_mtdparts(parts) != 0)
1786 if (list_empty(&devices)) {
1787 printf("mtdparts_init: no valid partitions\n");
1791 /* ok it's good, save new parts */
1792 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1794 /* reset first partition from first dev from the list as current */
1795 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1796 current_mtd_partnum = 0;
1799 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1800 MTD_DEV_TYPE(current_mtd_dev->id->type),
1801 current_mtd_dev->id->num, current_mtd_partnum);
1804 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1805 if (!parts && (last_parts[0] != '\0'))
1806 return mtd_devices_init();
1808 /* do not process current partition if mtdparts variable is null */
1812 /* is current partition set in environment? if so, use it */
1813 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1814 struct part_info *p;
1815 struct mtd_device *cdev;
1818 debug("--- getting current partition: %s\n", tmp_ep);
1820 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1821 current_mtd_dev = cdev;
1822 current_mtd_partnum = pnum;
1825 } else if (getenv("partition") == NULL) {
1826 debug("no partition variable set, setting...\n");
1834 * Return pointer to the partition of a requested number from a requested
1837 * @param dev device that is to be searched for a partition
1838 * @param part_num requested partition number
1839 * @return pointer to the part_info, NULL otherwise
1841 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1843 struct list_head *entry;
1844 struct part_info *part;
1850 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1851 part_num, MTD_DEV_TYPE(dev->id->type),
1852 dev->id->num, dev->id->mtd_id);
1854 if (part_num >= dev->num_parts) {
1855 printf("invalid partition number %d for device %s%d (%s)\n",
1856 part_num, MTD_DEV_TYPE(dev->id->type),
1857 dev->id->num, dev->id->mtd_id);
1861 /* locate partition number, return it */
1863 list_for_each(entry, &dev->parts) {
1864 part = list_entry(entry, struct part_info, link);
1866 if (part_num == num++) {
1874 /***************************************************/
1875 /* U-boot commands */
1876 /***************************************************/
1877 /* command line only */
1879 * Routine implementing u-boot chpart command. Sets new current partition based
1880 * on the user supplied partition id. For partition id format see find_dev_and_part().
1882 * @param cmdtp command internal data
1883 * @param flag command flag
1884 * @param argc number of arguments supplied to the command
1885 * @param argv arguments list
1886 * @return 0 on success, 1 otherwise
1888 static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1890 /* command line only */
1891 struct mtd_device *dev;
1892 struct part_info *part;
1895 if (mtdparts_init() !=0)
1899 printf("no partition id specified\n");
1903 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1906 current_mtd_dev = dev;
1907 current_mtd_partnum = pnum;
1910 printf("partition changed to %s%d,%d\n",
1911 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1917 * Routine implementing u-boot mtdparts command. Initialize/update default global
1918 * partition list and process user partition request (list, add, del).
1920 * @param cmdtp command internal data
1921 * @param flag command flag
1922 * @param argc number of arguments supplied to the command
1923 * @param argv arguments list
1924 * @return 0 on success, 1 otherwise
1926 static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1927 char * const argv[])
1930 if (strcmp(argv[1], "default") == 0) {
1931 setenv("mtdids", (char *)mtdids_default);
1932 setenv("mtdparts", (char *)mtdparts_default);
1933 setenv("partition", NULL);
1937 } else if (strcmp(argv[1], "delall") == 0) {
1938 /* this may be the first run, initialize lists if needed */
1941 setenv("mtdparts", NULL);
1943 /* mtd_devices_init() calls current_save() */
1944 return mtd_devices_init();
1948 /* make sure we are in sync with env variables */
1949 if (mtdparts_init() != 0)
1957 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1958 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1959 #define PART_ADD_DESC_MAXLEN 64
1960 char tmpbuf[PART_ADD_DESC_MAXLEN];
1961 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1962 struct mtd_info *mtd;
1963 uint64_t next_offset;
1966 struct mtd_device *dev;
1967 struct mtd_device *dev_tmp;
1969 struct part_info *p;
1971 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1974 if ((id = id_find(type, num)) == NULL) {
1975 printf("no such device %s defined in mtdids variable\n", argv[2]);
1979 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1980 len += strlen(argv[3]); /* size@offset */
1981 len += strlen(argv[4]) + 2; /* '(' name ')' */
1982 if (argv[5] && (strlen(argv[5]) == 2))
1983 len += 2; /* 'ro' */
1985 if (len >= PART_ADD_DESC_MAXLEN) {
1986 printf("too long partition description\n");
1989 sprintf(tmpbuf, "%s:%s(%s)%s",
1990 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
1991 debug("add tmpbuf: %s\n", tmpbuf);
1993 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
1996 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1997 dev->id->num, dev->id->mtd_id);
1999 p = list_entry(dev->parts.next, struct part_info, link);
2001 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2002 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2005 if (!strcmp(&argv[1][3], ".spread")) {
2006 spread_partition(mtd, p, &next_offset);
2007 debug("increased %s to %d bytes\n", p->name, p->size);
2011 dev_tmp = device_find(dev->id->type, dev->id->num);
2012 if (dev_tmp == NULL) {
2014 } else if (part_add(dev_tmp, p) != 0) {
2015 /* merge new partition with existing ones*/
2020 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2021 printf("generated mtdparts too long, reseting to null\n");
2028 /* mtdparts del part-id */
2029 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2030 debug("del: part-id = %s\n", argv[2]);
2032 return delete_partition(argv[2]);
2035 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2036 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2037 return spread_partitions();
2038 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2040 return CMD_RET_USAGE;
2043 /***************************************************/
2045 chpart, 2, 0, do_chpart,
2046 "change active partition",
2048 " - change active partition (e.g. part-id = nand0,1)"
2051 #ifdef CONFIG_SYS_LONGHELP
2052 static char mtdparts_help_text[] =
2054 " - list partition table\n"
2056 " - delete all partitions\n"
2057 "mtdparts del part-id\n"
2058 " - delete partition (e.g. part-id = nand0,1)\n"
2059 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2060 " - add partition\n"
2061 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2062 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2063 " - add partition, padding size by skipping bad blocks\n"
2065 "mtdparts default\n"
2066 " - reset partition table to defaults\n"
2067 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2069 " - adjust the sizes of the partitions so they are\n"
2070 " at least as big as the mtdparts variable specifies\n"
2071 " and they each start on a good block\n\n"
2074 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2076 "this command uses three environment variables:\n\n"
2077 "'partition' - keeps current partition identifier\n\n"
2078 "partition := <part-id>\n"
2079 "<part-id> := <dev-id>,part_num\n\n"
2080 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2081 "mtdids=<idmap>[,<idmap>,...]\n\n"
2082 "<idmap> := <dev-id>=<mtd-id>\n"
2083 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2084 "<dev-num> := mtd device number, 0...\n"
2085 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2086 "'mtdparts' - partition list\n\n"
2087 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2088 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2089 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2090 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2091 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2092 "<offset> := partition start offset within the device\n"
2093 "<name> := '(' NAME ')'\n"
2094 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2098 mtdparts, 6, 0, do_mtdparts,
2099 "define flash/nand partitions", mtdparts_help_text
2101 /***************************************************/