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;
136 char * get_mtdparts(void);
139 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
140 #define MTDIDS_MAXLEN 128
141 #define MTDPARTS_MAXLEN 512
142 #define PARTITION_MAXLEN 16
143 static char last_ids[MTDIDS_MAXLEN];
144 static char last_parts[MTDPARTS_MAXLEN];
145 static char last_partition[PARTITION_MAXLEN];
147 /* low level jffs2 cache cleaning routine */
148 extern void jffs2_free_cache(struct part_info *part);
150 /* mtdids mapping list, filled by parse_ids() */
151 struct list_head mtdids;
153 /* device/partition list, parse_cmdline() parses into here */
154 struct list_head devices;
156 /* current active device and partition number */
157 struct mtd_device *current_mtd_dev = NULL;
158 u8 current_mtd_partnum = 0;
160 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
162 /* command line only routines */
163 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
164 static int device_del(struct mtd_device *dev);
167 * Parses a string into a number. The number stored at ptr is
168 * potentially suffixed with K (for kilobytes, or 1024 bytes),
169 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
170 * 1073741824). If the number is suffixed with K, M, or G, then
171 * the return value is the number multiplied by one kilobyte, one
172 * megabyte, or one gigabyte, respectively.
174 * @param ptr where parse begins
175 * @param retptr output pointer to next char after parse completes (output)
176 * @return resulting unsigned int
178 static unsigned long memsize_parse (const char *const ptr, const char **retptr)
180 unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0);
201 * Format string describing supplied size. This routine does the opposite job
202 * to memsize_parse(). Size in bytes is converted to string and if possible
203 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
205 * Note, that this routine does not check for buffer overflow, it's the caller
206 * who must assure enough space.
208 * @param buf output buffer
209 * @param size size to be converted to string
211 static void memsize_format(char *buf, u32 size)
213 #define SIZE_GB ((u32)1024*1024*1024)
214 #define SIZE_MB ((u32)1024*1024)
215 #define SIZE_KB ((u32)1024)
217 if ((size % SIZE_GB) == 0)
218 sprintf(buf, "%ug", size/SIZE_GB);
219 else if ((size % SIZE_MB) == 0)
220 sprintf(buf, "%um", size/SIZE_MB);
221 else if (size % SIZE_KB == 0)
222 sprintf(buf, "%uk", size/SIZE_KB);
224 sprintf(buf, "%u", size);
228 * This routine does global indexing of all partitions. Resulting index for
229 * current partition is saved in 'mtddevnum'. Current partition name in
232 static void index_partitions(void)
236 struct part_info *part;
237 struct list_head *dentry;
238 struct mtd_device *dev;
240 debug("--- index partitions ---\n");
242 if (current_mtd_dev) {
244 list_for_each(dentry, &devices) {
245 dev = list_entry(dentry, struct mtd_device, link);
246 if (dev == current_mtd_dev) {
247 mtddevnum += current_mtd_partnum;
248 sprintf(buf, "%d", mtddevnum);
249 setenv("mtddevnum", buf);
252 mtddevnum += dev->num_parts;
255 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
258 setenv("mtddevnum", NULL);
259 setenv("mtddevname", NULL);
261 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
263 setenv("mtddevname", part->name);
265 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
268 setenv("mtddevnum", NULL);
269 setenv("mtddevname", NULL);
271 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
276 * Save current device and partition in environment variable 'partition'.
278 static void current_save(void)
282 debug("--- current_save ---\n");
284 if (current_mtd_dev) {
285 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
286 current_mtd_dev->id->num, current_mtd_partnum);
288 setenv("partition", buf);
289 strncpy(last_partition, buf, 16);
291 debug("=> partition %s\n", buf);
293 setenv("partition", NULL);
294 last_partition[0] = '\0';
296 debug("=> partition NULL\n");
303 * Produce a mtd_info given a type and num.
305 * @param type mtd type
306 * @param num mtd number
307 * @param mtd a pointer to an mtd_info instance (output)
308 * @return 0 if device is valid, 1 otherwise
310 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
314 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
315 *mtd = get_mtd_device_nm(mtd_dev);
317 printf("Device %s not found!\n", mtd_dev);
325 * Performs sanity check for supplied flash partition.
326 * Table of existing MTD flash devices is searched and partition device
327 * is located. Alignment with the granularity of nand erasesize is verified.
329 * @param id of the parent device
330 * @param part partition to validate
331 * @return 0 if partition is valid, 1 otherwise
333 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
335 struct mtd_info *mtd = NULL;
339 if (get_mtd_info(id->type, id->num, &mtd))
342 part->sector_size = mtd->erasesize;
344 if (!mtd->numeraseregions) {
346 * Only one eraseregion (NAND, OneNAND or uniform NOR),
347 * checking for alignment is easy here
349 if ((unsigned long)part->offset % mtd->erasesize) {
350 printf("%s%d: partition (%s) start offset"
351 "alignment incorrect\n",
352 MTD_DEV_TYPE(id->type), id->num, part->name);
356 if (part->size % mtd->erasesize) {
357 printf("%s%d: partition (%s) size alignment incorrect\n",
358 MTD_DEV_TYPE(id->type), id->num, part->name);
363 * Multiple eraseregions (non-uniform NOR),
364 * checking for alignment is more complex here
367 /* Check start alignment */
368 for (i = 0; i < mtd->numeraseregions; i++) {
369 start = mtd->eraseregions[i].offset;
370 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
371 if (part->offset == start)
373 start += mtd->eraseregions[i].erasesize;
377 printf("%s%d: partition (%s) start offset alignment incorrect\n",
378 MTD_DEV_TYPE(id->type), id->num, part->name);
383 /* Check end/size alignment */
384 for (i = 0; i < mtd->numeraseregions; i++) {
385 start = mtd->eraseregions[i].offset;
386 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
387 if ((part->offset + part->size) == start)
389 start += mtd->eraseregions[i].erasesize;
392 /* Check last sector alignment */
393 if ((part->offset + part->size) == start)
396 printf("%s%d: partition (%s) size alignment incorrect\n",
397 MTD_DEV_TYPE(id->type), id->num, part->name);
409 * Performs sanity check for supplied partition. Offset and size are verified
410 * to be within valid range. Partition type is checked and either
411 * parts_validate_nor() or parts_validate_nand() is called with the argument
414 * @param id of the parent device
415 * @param part partition to validate
416 * @return 0 if partition is valid, 1 otherwise
418 static int part_validate(struct mtdids *id, struct part_info *part)
420 if (part->size == SIZE_REMAINING)
421 part->size = id->size - part->offset;
423 if (part->offset > id->size) {
424 printf("%s: offset %08x beyond flash size %08x\n",
425 id->mtd_id, part->offset, id->size);
429 if ((part->offset + part->size) <= part->offset) {
430 printf("%s%d: partition (%s) size too big\n",
431 MTD_DEV_TYPE(id->type), id->num, part->name);
435 if (part->offset + part->size > id->size) {
436 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
441 * Now we need to check if the partition starts and ends on
442 * sector (eraseblock) regions
444 return part_validate_eraseblock(id, part);
448 * Delete selected partition from the partion list of the specified device.
450 * @param dev device to delete partition from
451 * @param part partition to delete
452 * @return 0 on success, 1 otherwise
454 static int part_del(struct mtd_device *dev, struct part_info *part)
456 u8 current_save_needed = 0;
458 /* if there is only one partition, remove whole device */
459 if (dev->num_parts == 1)
460 return device_del(dev);
462 /* otherwise just delete this partition */
464 if (dev == current_mtd_dev) {
465 /* we are modyfing partitions for the current device,
467 struct part_info *curr_pi;
468 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
471 if (curr_pi == part) {
472 printf("current partition deleted, resetting current to 0\n");
473 current_mtd_partnum = 0;
474 } else if (part->offset <= curr_pi->offset) {
475 current_mtd_partnum--;
477 current_save_needed = 1;
481 list_del(&part->link);
485 if (current_save_needed > 0)
494 * Delete all partitions from parts head list, free memory.
496 * @param head list of partitions to delete
498 static void part_delall(struct list_head *head)
500 struct list_head *entry, *n;
501 struct part_info *part_tmp;
503 /* clean tmp_list and free allocated memory */
504 list_for_each_safe(entry, n, head) {
505 part_tmp = list_entry(entry, struct part_info, link);
513 * Add new partition to the supplied partition list. Make sure partitions are
514 * sorted by offset in ascending order.
516 * @param head list this partition is to be added to
517 * @param new partition to be added
519 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
521 struct list_head *entry;
522 struct part_info *new_pi, *curr_pi;
524 /* link partition to parrent dev */
527 if (list_empty(&dev->parts)) {
528 debug("part_sort_add: list empty\n");
529 list_add(&part->link, &dev->parts);
535 new_pi = list_entry(&part->link, struct part_info, link);
537 /* get current partition info if we are updating current device */
539 if (dev == current_mtd_dev)
540 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
542 list_for_each(entry, &dev->parts) {
543 struct part_info *pi;
545 pi = list_entry(entry, struct part_info, link);
547 /* be compliant with kernel cmdline, allow only one partition at offset zero */
548 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
549 printf("cannot add second partition at offset 0\n");
553 if (new_pi->offset <= pi->offset) {
554 list_add_tail(&part->link, entry);
557 if (curr_pi && (pi->offset <= curr_pi->offset)) {
558 /* we are modyfing partitions for the current
559 * device, update current */
560 current_mtd_partnum++;
569 list_add_tail(&part->link, &dev->parts);
576 * Add provided partition to the partition list of a given device.
578 * @param dev device to which partition is added
579 * @param part partition to be added
580 * @return 0 on success, 1 otherwise
582 static int part_add(struct mtd_device *dev, struct part_info *part)
584 /* verify alignment and size */
585 if (part_validate(dev->id, part) != 0)
588 /* partition is ok, add it to the list */
589 if (part_sort_add(dev, part) != 0)
596 * Parse one partition definition, allocate memory and return pointer to this
597 * location in retpart.
599 * @param partdef pointer to the partition definition string i.e. <part-def>
600 * @param ret output pointer to next char after parse completes (output)
601 * @param retpart pointer to the allocated partition (output)
602 * @return 0 on success, 1 otherwise
604 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
606 struct part_info *part;
608 unsigned long offset;
611 unsigned int mask_flags;
618 /* fetch the partition size */
620 /* assign all remaining space to this partition */
621 debug("'-': remaining size assigned\n");
622 size = SIZE_REMAINING;
625 size = memsize_parse(p, &p);
626 if (size < MIN_PART_SIZE) {
627 printf("partition size too small (%lx)\n", size);
632 /* check for offset */
633 offset = OFFSET_NOT_SPECIFIED;
636 offset = memsize_parse(p, &p);
639 /* now look for the name */
642 if ((p = strchr(name, ')')) == NULL) {
643 printf("no closing ) found in partition name\n");
646 name_len = p - name + 1;
647 if ((name_len - 1) == 0) {
648 printf("empty partition name\n");
653 /* 0x00000000@0x00000000 */
658 /* test for options */
660 if (strncmp(p, "ro", 2) == 0) {
661 mask_flags |= MTD_WRITEABLE_CMD;
665 /* check for next partition definition */
667 if (size == SIZE_REMAINING) {
669 printf("no partitions allowed after a fill-up partition\n");
673 } else if ((*p == ';') || (*p == '\0')) {
676 printf("unexpected character '%c' at the end of partition\n", *p);
681 /* allocate memory */
682 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
684 printf("out of memory\n");
687 memset(part, 0, sizeof(struct part_info) + name_len);
689 part->offset = offset;
690 part->mask_flags = mask_flags;
691 part->name = (char *)(part + 1);
694 /* copy user provided name */
695 strncpy(part->name, name, name_len - 1);
698 /* auto generated name in form of size@offset */
699 sprintf(part->name, "0x%08lx@0x%08lx", size, offset);
703 part->name[name_len - 1] = '\0';
704 INIT_LIST_HEAD(&part->link);
706 debug("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
707 part->name, part->size,
708 part->offset, part->mask_flags);
715 * Check device number to be within valid range for given device type.
717 * @param type mtd type
718 * @param num mtd number
719 * @param size a pointer to the size of the mtd device (output)
720 * @return 0 if device is valid, 1 otherwise
722 int mtd_device_validate(u8 type, u8 num, u32 *size)
724 struct mtd_info *mtd = NULL;
726 if (get_mtd_info(type, num, &mtd))
735 * Delete all mtd devices from a supplied devices list, free memory allocated for
736 * each device and delete all device partitions.
738 * @return 0 on success, 1 otherwise
740 static int device_delall(struct list_head *head)
742 struct list_head *entry, *n;
743 struct mtd_device *dev_tmp;
745 /* clean devices list */
746 list_for_each_safe(entry, n, head) {
747 dev_tmp = list_entry(entry, struct mtd_device, link);
749 part_delall(&dev_tmp->parts);
752 INIT_LIST_HEAD(&devices);
758 * If provided device exists it's partitions are deleted, device is removed
759 * from device list and device memory is freed.
761 * @param dev device to be deleted
762 * @return 0 on success, 1 otherwise
764 static int device_del(struct mtd_device *dev)
766 part_delall(&dev->parts);
767 list_del(&dev->link);
770 if (dev == current_mtd_dev) {
771 /* we just deleted current device */
772 if (list_empty(&devices)) {
773 current_mtd_dev = NULL;
775 /* reset first partition from first dev from the
776 * devices list as current */
777 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
778 current_mtd_partnum = 0;
789 * Search global device list and return pointer to the device of type and num
792 * @param type device type
793 * @param num device number
794 * @return NULL if requested device does not exist
796 struct mtd_device *device_find(u8 type, u8 num)
798 struct list_head *entry;
799 struct mtd_device *dev_tmp;
801 list_for_each(entry, &devices) {
802 dev_tmp = list_entry(entry, struct mtd_device, link);
804 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
812 * Add specified device to the global device list.
814 * @param dev device to be added
816 static void device_add(struct mtd_device *dev)
818 u8 current_save_needed = 0;
820 if (list_empty(&devices)) {
821 current_mtd_dev = dev;
822 current_mtd_partnum = 0;
823 current_save_needed = 1;
826 list_add_tail(&dev->link, &devices);
828 if (current_save_needed > 0)
835 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
836 * return pointer to the device structure.
838 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
839 * @param ret output pointer to next char after parse completes (output)
840 * @param retdev pointer to the allocated device (output)
841 * @return 0 on success, 1 otherwise
843 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
845 struct mtd_device *dev;
846 struct part_info *part;
849 unsigned int mtd_id_len;
850 const char *p, *pend;
852 struct list_head *entry, *n;
857 debug("===device_parse===\n");
866 mtd_id = p = mtd_dev;
867 if (!(p = strchr(mtd_id, ':'))) {
868 printf("no <mtd-id> identifier\n");
871 mtd_id_len = p - mtd_id + 1;
874 /* verify if we have a valid device specified */
875 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
876 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
880 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
881 id->type, MTD_DEV_TYPE(id->type),
882 id->num, id->mtd_id);
883 pend = strchr(p, ';');
884 debug("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p);
887 /* parse partitions */
891 if ((dev = device_find(id->type, id->num)) != NULL) {
892 /* if device already exists start at the end of the last partition */
893 part = list_entry(dev->parts.prev, struct part_info, link);
894 offset = part->offset + part->size;
897 while (p && (*p != '\0') && (*p != ';')) {
899 if ((part_parse(p, &p, &part) != 0) || (!part))
902 /* calculate offset when not specified */
903 if (part->offset == OFFSET_NOT_SPECIFIED)
904 part->offset = offset;
906 offset = part->offset;
908 /* verify alignment and size */
909 if (part_validate(id, part) != 0)
912 offset += part->size;
914 /* partition is ok, add it to the list */
915 list_add_tail(&part->link, &tmp_list);
920 part_delall(&tmp_list);
924 if (num_parts == 0) {
925 printf("no partitions for device %s%d (%s)\n",
926 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
930 debug("\ntotal partitions: %d\n", num_parts);
932 /* check for next device presence */
937 } else if (*p == '\0') {
941 printf("unexpected character '%c' at the end of device\n", *p);
948 /* allocate memory for mtd_device structure */
949 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
950 printf("out of memory\n");
953 memset(dev, 0, sizeof(struct mtd_device));
955 dev->num_parts = 0; /* part_sort_add increments num_parts */
956 INIT_LIST_HEAD(&dev->parts);
957 INIT_LIST_HEAD(&dev->link);
959 /* move partitions from tmp_list to dev->parts */
960 list_for_each_safe(entry, n, &tmp_list) {
961 part = list_entry(entry, struct part_info, link);
963 if (part_sort_add(dev, part) != 0) {
976 * Initialize global device list.
978 * @return 0 on success, 1 otherwise
980 static int mtd_devices_init(void)
982 last_parts[0] = '\0';
983 current_mtd_dev = NULL;
986 return device_delall(&devices);
990 * Search global mtdids list and find id of requested type and number.
992 * @return pointer to the id if it exists, NULL otherwise
994 static struct mtdids* id_find(u8 type, u8 num)
996 struct list_head *entry;
999 list_for_each(entry, &mtdids) {
1000 id = list_entry(entry, struct mtdids, link);
1002 if ((id->type == type) && (id->num == num))
1010 * Search global mtdids list and find id of a requested mtd_id.
1012 * Note: first argument is not null terminated.
1014 * @param mtd_id string containing requested mtd_id
1015 * @param mtd_id_len length of supplied mtd_id
1016 * @return pointer to the id if it exists, NULL otherwise
1018 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1020 struct list_head *entry;
1023 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1024 mtd_id_len, mtd_id, mtd_id_len);
1026 list_for_each(entry, &mtdids) {
1027 id = list_entry(entry, struct mtdids, link);
1029 debug("entry: '%s' (len = %d)\n",
1030 id->mtd_id, strlen(id->mtd_id));
1032 if (mtd_id_len != strlen(id->mtd_id))
1034 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1042 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1043 * return device type and number.
1045 * @param id string describing device id
1046 * @param ret_id output pointer to next char after parse completes (output)
1047 * @param dev_type parsed device type (output)
1048 * @param dev_num parsed device number (output)
1049 * @return 0 on success, 1 otherwise
1051 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
1056 if (strncmp(p, "nand", 4) == 0) {
1057 *dev_type = MTD_DEV_TYPE_NAND;
1059 } else if (strncmp(p, "nor", 3) == 0) {
1060 *dev_type = MTD_DEV_TYPE_NOR;
1062 } else if (strncmp(p, "onenand", 7) == 0) {
1063 *dev_type = MTD_DEV_TYPE_ONENAND;
1066 printf("incorrect device type in %s\n", id);
1071 printf("incorrect device number in %s\n", id);
1075 *dev_num = simple_strtoul(p, (char **)&p, 0);
1082 * Process all devices and generate corresponding mtdparts string describing
1083 * all partitions on all devices.
1085 * @param buf output buffer holding generated mtdparts string (output)
1086 * @param buflen buffer size
1087 * @return 0 on success, 1 otherwise
1089 static int generate_mtdparts(char *buf, u32 buflen)
1091 struct list_head *pentry, *dentry;
1092 struct mtd_device *dev;
1093 struct part_info *part, *prev_part;
1096 u32 size, offset, len, part_cnt;
1097 u32 maxlen = buflen - 1;
1099 debug("--- generate_mtdparts ---\n");
1101 if (list_empty(&devices)) {
1106 sprintf(p, "mtdparts=");
1109 list_for_each(dentry, &devices) {
1110 dev = list_entry(dentry, struct mtd_device, link);
1113 len = strlen(dev->id->mtd_id) + 1;
1116 memcpy(p, dev->id->mtd_id, len - 1);
1121 /* format partitions */
1124 list_for_each(pentry, &dev->parts) {
1125 part = list_entry(pentry, struct part_info, link);
1127 offset = part->offset;
1130 /* partition size */
1131 memsize_format(tmpbuf, size);
1132 len = strlen(tmpbuf);
1135 memcpy(p, tmpbuf, len);
1140 /* add offset only when there is a gap between
1142 if ((!prev_part && (offset != 0)) ||
1143 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1145 memsize_format(tmpbuf, offset);
1146 len = strlen(tmpbuf) + 1;
1150 memcpy(p, tmpbuf, len - 1);
1155 /* copy name only if user supplied */
1156 if(!part->auto_name) {
1157 len = strlen(part->name) + 2;
1162 memcpy(p, part->name, len - 2);
1169 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1178 /* print ',' separator if there are other partitions
1180 if (dev->num_parts > part_cnt) {
1188 /* print ';' separator if there are other devices following */
1189 if (dentry->next != &devices) {
1197 /* we still have at least one char left, as we decremented maxlen at
1204 last_parts[0] = '\0';
1209 * Call generate_mtdparts to process all devices and generate corresponding
1210 * mtdparts string, save it in mtdparts environment variable.
1212 * @param buf output buffer holding generated mtdparts string (output)
1213 * @param buflen buffer size
1214 * @return 0 on success, 1 otherwise
1216 static int generate_mtdparts_save(char *buf, u32 buflen)
1220 ret = generate_mtdparts(buf, buflen);
1222 if ((buf[0] != '\0') && (ret == 0))
1223 setenv("mtdparts", buf);
1225 setenv("mtdparts", NULL);
1230 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1232 * Get the net size (w/o bad blocks) of the given partition.
1234 * @param mtd the mtd info
1235 * @param part the partition
1236 * @return the calculated net size of this partition
1238 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1240 uint64_t i, net_size = 0;
1242 if (!mtd->block_isbad)
1245 for (i = 0; i < part->size; i += mtd->erasesize) {
1246 if (!mtd->block_isbad(mtd, part->offset + i))
1247 net_size += mtd->erasesize;
1254 static void print_partition_table(void)
1256 struct list_head *dentry, *pentry;
1257 struct part_info *part;
1258 struct mtd_device *dev;
1261 list_for_each(dentry, &devices) {
1262 dev = list_entry(dentry, struct mtd_device, link);
1263 /* list partitions for given device */
1265 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1266 struct mtd_info *mtd;
1268 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1271 printf("\ndevice %s%d <%s>, # parts = %d\n",
1272 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1273 dev->id->mtd_id, dev->num_parts);
1274 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1276 list_for_each(pentry, &dev->parts) {
1280 part = list_entry(pentry, struct part_info, link);
1281 net_size = net_part_size(mtd, part);
1282 size_note = part->size == net_size ? " " : " (!)";
1283 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1284 part_num, part->name, part->size,
1285 net_size, size_note, part->offset,
1287 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1288 printf("\ndevice %s%d <%s>, # parts = %d\n",
1289 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1290 dev->id->mtd_id, dev->num_parts);
1291 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1293 list_for_each(pentry, &dev->parts) {
1294 part = list_entry(pentry, struct part_info, link);
1295 printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
1296 part_num, part->name, part->size,
1297 part->offset, part->mask_flags);
1298 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1303 if (list_empty(&devices))
1304 printf("no partitions defined\n");
1308 * Format and print out a partition list for each device from global device
1311 static void list_partitions(void)
1313 struct part_info *part;
1315 debug("\n---list_partitions---\n");
1316 print_partition_table();
1318 /* current_mtd_dev is not NULL only when we have non empty device list */
1319 if (current_mtd_dev) {
1320 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1322 printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
1323 MTD_DEV_TYPE(current_mtd_dev->id->type),
1324 current_mtd_dev->id->num, current_mtd_partnum,
1325 part->name, part->size, part->offset);
1327 printf("could not get current partition info\n\n");
1331 printf("\ndefaults:\n");
1332 printf("mtdids : %s\n",
1333 mtdids_default ? mtdids_default : "none");
1335 * Using printf() here results in printbuffer overflow
1336 * if default mtdparts string is greater than console
1337 * printbuffer. Use puts() to prevent system crashes.
1340 puts(mtdparts_default ? mtdparts_default : "none");
1345 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1346 * corresponding device and verify partition number.
1348 * @param id string describing device and partition or partition name
1349 * @param dev pointer to the requested device (output)
1350 * @param part_num verified partition number (output)
1351 * @param part pointer to requested partition (output)
1352 * @return 0 on success, 1 otherwise
1354 int find_dev_and_part(const char *id, struct mtd_device **dev,
1355 u8 *part_num, struct part_info **part)
1357 struct list_head *dentry, *pentry;
1358 u8 type, dnum, pnum;
1361 debug("--- find_dev_and_part ---\nid = %s\n", id);
1363 list_for_each(dentry, &devices) {
1365 *dev = list_entry(dentry, struct mtd_device, link);
1366 list_for_each(pentry, &(*dev)->parts) {
1367 *part = list_entry(pentry, struct part_info, link);
1368 if (strcmp((*part)->name, id) == 0)
1379 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1382 if ((*p++ != ',') || (*p == '\0')) {
1383 printf("no partition number specified\n");
1386 pnum = simple_strtoul(p, (char **)&p, 0);
1388 printf("unexpected trailing character '%c'\n", *p);
1392 if ((*dev = device_find(type, dnum)) == NULL) {
1393 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1397 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1398 printf("no such partition\n");
1409 * Find and delete partition. For partition id format see find_dev_and_part().
1411 * @param id string describing device and partition
1412 * @return 0 on success, 1 otherwise
1414 static int delete_partition(const char *id)
1417 struct mtd_device *dev;
1418 struct part_info *part;
1420 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1422 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
1423 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1424 part->name, part->size, part->offset);
1426 if (part_del(dev, part) != 0)
1429 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1430 printf("generated mtdparts too long, reseting to null\n");
1436 printf("partition %s not found\n", id);
1440 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1442 * Increase the size of the given partition so that it's net size is at least
1443 * as large as the size member and such that the next partition would start on a
1444 * good block if it were adjacent to this partition.
1446 * @param mtd the mtd device
1447 * @param part the partition
1448 * @param next_offset pointer to the offset of the next partition after this
1449 * partition's size has been modified (output)
1451 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1452 uint64_t *next_offset)
1454 uint64_t net_size, padding_size = 0;
1457 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1461 * Absorb bad blocks immediately following this
1462 * partition also into the partition, such that
1463 * the next partition starts with a good block.
1466 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1467 mtd->erasesize, &padding_size, &truncated);
1471 padding_size -= mtd->erasesize;
1475 printf("truncated partition %s to %lld bytes\n", part->name,
1476 (uint64_t) net_size + padding_size);
1479 part->size = net_size + padding_size;
1480 *next_offset = part->offset + part->size;
1484 * Adjust all of the partition sizes, such that all partitions are at least
1485 * as big as their mtdparts environment variable sizes and they each start
1488 * @return 0 on success, 1 otherwise
1490 static int spread_partitions(void)
1492 struct list_head *dentry, *pentry;
1493 struct mtd_device *dev;
1494 struct part_info *part;
1495 struct mtd_info *mtd;
1499 list_for_each(dentry, &devices) {
1500 dev = list_entry(dentry, struct mtd_device, link);
1502 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1507 list_for_each(pentry, &dev->parts) {
1508 part = list_entry(pentry, struct part_info, link);
1510 debug("spread_partitions: device = %s%d, partition %d ="
1511 " (%s) 0x%08x@0x%08x\n",
1512 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1513 part_num, part->name, part->size,
1516 if (cur_offs > part->offset)
1517 part->offset = cur_offs;
1519 spread_partition(mtd, part, &cur_offs);
1527 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1528 printf("generated mtdparts too long, reseting to null\n");
1533 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1536 * Accept character string describing mtd partitions and call device_parse()
1537 * for each entry. Add created devices to the global devices list.
1539 * @param mtdparts string specifing mtd partitions
1540 * @return 0 on success, 1 otherwise
1542 static int parse_mtdparts(const char *const mtdparts)
1544 const char *p = mtdparts;
1545 struct mtd_device *dev;
1548 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
1550 /* delete all devices and partitions */
1551 if (mtd_devices_init() != 0) {
1552 printf("could not initialise device list\n");
1556 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1557 #if defined(MTDPARTS_DEFAULT)
1558 p = getenv("mtdparts");
1565 if (strncmp(p, "mtdparts=", 9) != 0) {
1566 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1571 while (p && (*p != '\0')) {
1573 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1576 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1577 dev->id->num, dev->id->mtd_id);
1579 /* check if parsed device is already on the list */
1580 if (device_find(dev->id->type, dev->id->num) != NULL) {
1581 printf("device %s%d redefined, please correct mtdparts variable\n",
1582 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1586 list_add_tail(&dev->link, &devices);
1590 device_delall(&devices);
1599 * Parse provided string describing mtdids mapping (see file header for mtdids
1600 * variable format). Allocate memory for each entry and add all found entries
1601 * to the global mtdids list.
1603 * @param ids mapping string
1604 * @return 0 on success, 1 otherwise
1606 static int parse_mtdids(const char *const ids)
1608 const char *p = ids;
1612 struct list_head *entry, *n;
1613 struct mtdids *id_tmp;
1618 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1620 /* clean global mtdids list */
1621 list_for_each_safe(entry, n, &mtdids) {
1622 id_tmp = list_entry(entry, struct mtdids, link);
1623 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1628 INIT_LIST_HEAD(&mtdids);
1630 while(p && (*p != '\0')) {
1633 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1634 if (mtd_id_parse(p, &p, &type, &num) != 0)
1638 printf("mtdids: incorrect <dev-num>\n");
1643 /* check if requested device exists */
1644 if (mtd_device_validate(type, num, &size) != 0)
1647 /* locate <mtd-id> */
1649 if ((p = strchr(mtd_id, ',')) != NULL) {
1650 mtd_id_len = p - mtd_id + 1;
1653 mtd_id_len = strlen(mtd_id) + 1;
1655 if (mtd_id_len == 0) {
1656 printf("mtdids: no <mtd-id> identifier\n");
1660 /* check if this id is already on the list */
1661 int double_entry = 0;
1662 list_for_each(entry, &mtdids) {
1663 id_tmp = list_entry(entry, struct mtdids, link);
1664 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1670 printf("device id %s%d redefined, please correct mtdids variable\n",
1671 MTD_DEV_TYPE(type), num);
1675 /* allocate mtdids structure */
1676 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1677 printf("out of memory\n");
1680 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1684 id->mtd_id = (char *)(id + 1);
1685 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1686 id->mtd_id[mtd_id_len - 1] = '\0';
1687 INIT_LIST_HEAD(&id->link);
1689 debug("+ id %s%d\t%16d bytes\t%s\n",
1690 MTD_DEV_TYPE(id->type), id->num,
1691 id->size, id->mtd_id);
1693 list_add_tail(&id->link, &mtdids);
1697 /* clean mtdids list and free allocated memory */
1698 list_for_each_safe(entry, n, &mtdids) {
1699 id_tmp = list_entry(entry, struct mtdids, link);
1710 * Parse and initialize global mtdids mapping and create global
1711 * device/partition list.
1713 * @return 0 on success, 1 otherwise
1715 int mtdparts_init(void)
1717 static int initialized = 0;
1718 const char *ids, *parts;
1719 const char *current_partition;
1721 char tmp_ep[PARTITION_MAXLEN];
1723 debug("\n---mtdparts_init---\n");
1725 INIT_LIST_HEAD(&mtdids);
1726 INIT_LIST_HEAD(&devices);
1727 memset(last_ids, 0, MTDIDS_MAXLEN);
1728 memset(last_parts, 0, MTDPARTS_MAXLEN);
1729 memset(last_partition, 0, PARTITION_MAXLEN);
1734 ids = getenv("mtdids");
1735 #if defined(MTDPARTS_DEFAULT)
1736 parts = getenv("mtdparts");
1738 parts = get_mtdparts();
1740 current_partition = getenv("partition");
1742 /* save it for later parsing, cannot rely on current partition pointer
1743 * as 'partition' variable may be updated during init */
1745 if (current_partition)
1746 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1748 debug("last_ids : %s\n", last_ids);
1749 debug("env_ids : %s\n", ids);
1750 debug("last_parts: %s\n", last_parts);
1751 debug("env_parts : %s\n\n", parts);
1753 debug("last_partition : %s\n", last_partition);
1754 debug("env_partition : %s\n", current_partition);
1756 /* if mtdids varible is empty try to use defaults */
1758 if (mtdids_default) {
1759 debug("mtdids variable not defined, using default\n");
1760 ids = mtdids_default;
1761 setenv("mtdids", (char *)ids);
1763 printf("mtdids not defined, no default present\n");
1767 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1768 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1772 /* do no try to use defaults when mtdparts variable is not defined,
1773 * just check the length */
1775 printf("mtdparts variable not set, see 'help mtdparts'\n");
1777 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1778 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1782 /* check if we have already parsed those mtdids */
1783 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1788 if (parse_mtdids(ids) != 0) {
1793 /* ok it's good, save new ids */
1794 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1797 /* parse partitions if either mtdparts or mtdids were updated */
1798 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1799 if (parse_mtdparts(parts) != 0)
1802 if (list_empty(&devices)) {
1803 printf("mtdparts_init: no valid partitions\n");
1807 /* ok it's good, save new parts */
1808 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1810 /* reset first partition from first dev from the list as current */
1811 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1812 current_mtd_partnum = 0;
1815 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1816 MTD_DEV_TYPE(current_mtd_dev->id->type),
1817 current_mtd_dev->id->num, current_mtd_partnum);
1820 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1821 if (!parts && (last_parts[0] != '\0'))
1822 return mtd_devices_init();
1824 /* do not process current partition if mtdparts variable is null */
1828 /* is current partition set in environment? if so, use it */
1829 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1830 struct part_info *p;
1831 struct mtd_device *cdev;
1834 debug("--- getting current partition: %s\n", tmp_ep);
1836 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1837 current_mtd_dev = cdev;
1838 current_mtd_partnum = pnum;
1841 } else if (getenv("partition") == NULL) {
1842 debug("no partition variable set, setting...\n");
1850 * Return pointer to the partition of a requested number from a requested
1853 * @param dev device that is to be searched for a partition
1854 * @param part_num requested partition number
1855 * @return pointer to the part_info, NULL otherwise
1857 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1859 struct list_head *entry;
1860 struct part_info *part;
1866 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1867 part_num, MTD_DEV_TYPE(dev->id->type),
1868 dev->id->num, dev->id->mtd_id);
1870 if (part_num >= dev->num_parts) {
1871 printf("invalid partition number %d for device %s%d (%s)\n",
1872 part_num, MTD_DEV_TYPE(dev->id->type),
1873 dev->id->num, dev->id->mtd_id);
1877 /* locate partition number, return it */
1879 list_for_each(entry, &dev->parts) {
1880 part = list_entry(entry, struct part_info, link);
1882 if (part_num == num++) {
1890 /***************************************************/
1891 /* U-boot commands */
1892 /***************************************************/
1893 /* command line only */
1895 * Routine implementing u-boot chpart command. Sets new current partition based
1896 * on the user supplied partition id. For partition id format see find_dev_and_part().
1898 * @param cmdtp command internal data
1899 * @param flag command flag
1900 * @param argc number of arguments supplied to the command
1901 * @param argv arguments list
1902 * @return 0 on success, 1 otherwise
1904 int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1906 /* command line only */
1907 struct mtd_device *dev;
1908 struct part_info *part;
1911 if (mtdparts_init() !=0)
1915 printf("no partition id specified\n");
1919 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1922 current_mtd_dev = dev;
1923 current_mtd_partnum = pnum;
1926 printf("partition changed to %s%d,%d\n",
1927 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1933 * Routine implementing u-boot mtdparts command. Initialize/update default global
1934 * partition list and process user partition request (list, add, del).
1936 * @param cmdtp command internal data
1937 * @param flag command flag
1938 * @param argc number of arguments supplied to the command
1939 * @param argv arguments list
1940 * @return 0 on success, 1 otherwise
1942 int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1945 if (strcmp(argv[1], "default") == 0) {
1946 setenv("mtdids", (char *)mtdids_default);
1947 setenv("mtdparts", (char *)mtdparts_default);
1948 setenv("partition", NULL);
1952 } else if (strcmp(argv[1], "delall") == 0) {
1953 /* this may be the first run, initialize lists if needed */
1956 setenv("mtdparts", NULL);
1958 /* mtd_devices_init() calls current_save() */
1959 return mtd_devices_init();
1963 /* make sure we are in sync with env variables */
1964 if (mtdparts_init() != 0)
1972 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1973 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1974 #define PART_ADD_DESC_MAXLEN 64
1975 char tmpbuf[PART_ADD_DESC_MAXLEN];
1976 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1977 struct mtd_info *mtd;
1978 uint64_t next_offset;
1981 struct mtd_device *dev;
1982 struct mtd_device *dev_tmp;
1984 struct part_info *p;
1986 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1989 if ((id = id_find(type, num)) == NULL) {
1990 printf("no such device %s defined in mtdids variable\n", argv[2]);
1994 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1995 len += strlen(argv[3]); /* size@offset */
1996 len += strlen(argv[4]) + 2; /* '(' name ')' */
1997 if (argv[5] && (strlen(argv[5]) == 2))
1998 len += 2; /* 'ro' */
2000 if (len >= PART_ADD_DESC_MAXLEN) {
2001 printf("too long partition description\n");
2004 sprintf(tmpbuf, "%s:%s(%s)%s",
2005 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
2006 debug("add tmpbuf: %s\n", tmpbuf);
2008 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2011 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
2012 dev->id->num, dev->id->mtd_id);
2014 p = list_entry(dev->parts.next, struct part_info, link);
2016 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2017 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2020 if (!strcmp(&argv[1][3], ".spread")) {
2021 spread_partition(mtd, p, &next_offset);
2022 debug("increased %s to %d bytes\n", p->name, p->size);
2026 dev_tmp = device_find(dev->id->type, dev->id->num);
2027 if (dev_tmp == NULL) {
2029 } else if (part_add(dev_tmp, p) != 0) {
2030 /* merge new partition with existing ones*/
2035 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2036 printf("generated mtdparts too long, reseting to null\n");
2043 /* mtdparts del part-id */
2044 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2045 debug("del: part-id = %s\n", argv[2]);
2047 return delete_partition(argv[2]);
2050 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2051 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2052 return spread_partitions();
2053 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2055 return cmd_usage(cmdtp);
2058 /***************************************************/
2060 chpart, 2, 0, do_chpart,
2061 "change active partition",
2063 " - change active partition (e.g. part-id = nand0,1)"
2067 mtdparts, 6, 0, do_mtdparts,
2068 "define flash/nand partitions",
2070 " - list partition table\n"
2072 " - delete all partitions\n"
2073 "mtdparts del part-id\n"
2074 " - delete partition (e.g. part-id = nand0,1)\n"
2075 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2076 " - add partition\n"
2077 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2078 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2079 " - add partition, padding size by skipping bad blocks\n"
2081 "mtdparts default\n"
2082 " - reset partition table to defaults\n"
2083 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2085 " - adjust the sizes of the partitions so they are\n"
2086 " at least as big as the mtdparts variable specifies\n"
2087 " and they each start on a good block\n\n"
2090 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2092 "this command uses three environment variables:\n\n"
2093 "'partition' - keeps current partition identifier\n\n"
2094 "partition := <part-id>\n"
2095 "<part-id> := <dev-id>,part_num\n\n"
2096 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2097 "mtdids=<idmap>[,<idmap>,...]\n\n"
2098 "<idmap> := <dev-id>=<mtd-id>\n"
2099 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2100 "<dev-num> := mtd device number, 0...\n"
2101 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2102 "'mtdparts' - partition list\n\n"
2103 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2104 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2105 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2106 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2107 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2108 "<offset> := partition start offset within the device\n"
2109 "<name> := '(' NAME ')'\n"
2110 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)"
2112 /***************************************************/