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 * SPDX-License-Identifier: GPL-2.0+
28 * Three environment variables are used by the parsing routines:
30 * 'partition' - keeps current partition identifier
32 * partition := <part-id>
33 * <part-id> := <dev-id>,part_num
36 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
38 * mtdids=<idmap>[,<idmap>,...]
40 * <idmap> := <dev-id>=<mtd-id>
41 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
42 * <dev-num> := mtd device number, 0...
43 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
46 * 'mtdparts' - partition list
48 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
50 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
51 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
52 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
53 * <size> := standard linux memsize OR '-' to denote all remaining space
54 * <offset> := partition start offset within the device
55 * <name> := '(' NAME ')'
56 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
59 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
60 * - if the above variables are not set defaults for a given target are used
64 * 1 NOR Flash, with 1 single writable partition:
65 * mtdids=nor0=edb7312-nor
66 * mtdparts=mtdparts=edb7312-nor:-
68 * 1 NOR Flash with 2 partitions, 1 NAND with one
69 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
70 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
77 #include <jffs2/load_kernel.h>
78 #include <linux/list.h>
79 #include <linux/ctype.h>
80 #include <linux/err.h>
81 #include <linux/mtd/mtd.h>
83 #if defined(CONFIG_CMD_NAND)
84 #include <linux/mtd/nand.h>
88 #if defined(CONFIG_CMD_ONENAND)
89 #include <linux/mtd/onenand.h>
90 #include <onenand_uboot.h>
93 DECLARE_GLOBAL_DATA_PTR;
95 /* special size referring to all the remaining space in a partition */
96 #define SIZE_REMAINING (~0llu)
98 /* special offset value, it is used when not provided by user
100 * this value is used temporarily during parsing, later such offests
101 * are recalculated */
102 #define OFFSET_NOT_SPECIFIED (~0llu)
104 /* minimum partition size */
105 #define MIN_PART_SIZE 4096
107 /* this flag needs to be set in part_info struct mask_flags
108 * field for read-only partitions */
109 #define MTD_WRITEABLE_CMD 1
111 /* default values for mtdids and mtdparts variables */
112 #if defined(MTDIDS_DEFAULT)
113 static const char *const mtdids_default = MTDIDS_DEFAULT;
115 static const char *const mtdids_default = NULL;
118 #if defined(MTDPARTS_DEFAULT)
119 static const char *const mtdparts_default = MTDPARTS_DEFAULT;
121 static const char *const mtdparts_default = NULL;
124 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
125 #define MTDIDS_MAXLEN 128
126 #define MTDPARTS_MAXLEN 512
127 #define PARTITION_MAXLEN 16
128 static char last_ids[MTDIDS_MAXLEN];
129 static char last_parts[MTDPARTS_MAXLEN];
130 static char last_partition[PARTITION_MAXLEN];
132 /* low level jffs2 cache cleaning routine */
133 extern void jffs2_free_cache(struct part_info *part);
135 /* mtdids mapping list, filled by parse_ids() */
136 static struct list_head mtdids;
138 /* device/partition list, parse_cmdline() parses into here */
139 static struct list_head devices;
141 /* current active device and partition number */
142 struct mtd_device *current_mtd_dev = NULL;
143 u8 current_mtd_partnum = 0;
145 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
147 /* command line only routines */
148 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
149 static int device_del(struct mtd_device *dev);
152 * Parses a string into a number. The number stored at ptr is
153 * potentially suffixed with K (for kilobytes, or 1024 bytes),
154 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
155 * 1073741824). If the number is suffixed with K, M, or G, then
156 * the return value is the number multiplied by one kilobyte, one
157 * megabyte, or one gigabyte, respectively.
159 * @param ptr where parse begins
160 * @param retptr output pointer to next char after parse completes (output)
161 * @return resulting unsigned int
163 static u64 memsize_parse (const char *const ptr, const char **retptr)
165 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
186 * Format string describing supplied size. This routine does the opposite job
187 * to memsize_parse(). Size in bytes is converted to string and if possible
188 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
190 * Note, that this routine does not check for buffer overflow, it's the caller
191 * who must assure enough space.
193 * @param buf output buffer
194 * @param size size to be converted to string
196 static void memsize_format(char *buf, u64 size)
198 #define SIZE_GB ((u32)1024*1024*1024)
199 #define SIZE_MB ((u32)1024*1024)
200 #define SIZE_KB ((u32)1024)
202 if ((size % SIZE_GB) == 0)
203 sprintf(buf, "%llug", size/SIZE_GB);
204 else if ((size % SIZE_MB) == 0)
205 sprintf(buf, "%llum", size/SIZE_MB);
206 else if (size % SIZE_KB == 0)
207 sprintf(buf, "%lluk", size/SIZE_KB);
209 sprintf(buf, "%llu", size);
213 * This routine does global indexing of all partitions. Resulting index for
214 * current partition is saved in 'mtddevnum'. Current partition name in
217 static void index_partitions(void)
220 struct part_info *part;
221 struct list_head *dentry;
222 struct mtd_device *dev;
224 debug("--- index partitions ---\n");
226 if (current_mtd_dev) {
228 list_for_each(dentry, &devices) {
229 dev = list_entry(dentry, struct mtd_device, link);
230 if (dev == current_mtd_dev) {
231 mtddevnum += current_mtd_partnum;
232 setenv_ulong("mtddevnum", mtddevnum);
235 mtddevnum += dev->num_parts;
238 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
239 setenv("mtddevname", part->name);
241 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
243 setenv("mtddevnum", NULL);
244 setenv("mtddevname", NULL);
246 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
251 * Save current device and partition in environment variable 'partition'.
253 static void current_save(void)
257 debug("--- current_save ---\n");
259 if (current_mtd_dev) {
260 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
261 current_mtd_dev->id->num, current_mtd_partnum);
263 setenv("partition", buf);
264 strncpy(last_partition, buf, 16);
266 debug("=> partition %s\n", buf);
268 setenv("partition", NULL);
269 last_partition[0] = '\0';
271 debug("=> partition NULL\n");
278 * Produce a mtd_info given a type and num.
280 * @param type mtd type
281 * @param num mtd number
282 * @param mtd a pointer to an mtd_info instance (output)
283 * @return 0 if device is valid, 1 otherwise
285 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
289 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
290 *mtd = get_mtd_device_nm(mtd_dev);
292 printf("Device %s not found!\n", mtd_dev);
300 * Performs sanity check for supplied flash partition.
301 * Table of existing MTD flash devices is searched and partition device
302 * is located. Alignment with the granularity of nand erasesize is verified.
304 * @param id of the parent device
305 * @param part partition to validate
306 * @return 0 if partition is valid, 1 otherwise
308 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
310 struct mtd_info *mtd = NULL;
315 if (get_mtd_info(id->type, id->num, &mtd))
318 part->sector_size = mtd->erasesize;
320 if (!mtd->numeraseregions) {
322 * Only one eraseregion (NAND, OneNAND or uniform NOR),
323 * checking for alignment is easy here
325 offset = part->offset;
326 if (do_div(offset, mtd->erasesize)) {
327 printf("%s%d: partition (%s) start offset"
328 "alignment incorrect\n",
329 MTD_DEV_TYPE(id->type), id->num, part->name);
334 if (do_div(size, mtd->erasesize)) {
335 printf("%s%d: partition (%s) size alignment incorrect\n",
336 MTD_DEV_TYPE(id->type), id->num, part->name);
341 * Multiple eraseregions (non-uniform NOR),
342 * checking for alignment is more complex here
345 /* Check start alignment */
346 for (i = 0; i < mtd->numeraseregions; i++) {
347 start = mtd->eraseregions[i].offset;
348 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
349 if (part->offset == start)
351 start += mtd->eraseregions[i].erasesize;
355 printf("%s%d: partition (%s) start offset alignment incorrect\n",
356 MTD_DEV_TYPE(id->type), id->num, part->name);
361 /* Check end/size alignment */
362 for (i = 0; i < mtd->numeraseregions; i++) {
363 start = mtd->eraseregions[i].offset;
364 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
365 if ((part->offset + part->size) == start)
367 start += mtd->eraseregions[i].erasesize;
370 /* Check last sector alignment */
371 if ((part->offset + part->size) == start)
374 printf("%s%d: partition (%s) size alignment incorrect\n",
375 MTD_DEV_TYPE(id->type), id->num, part->name);
387 * Performs sanity check for supplied partition. Offset and size are
388 * verified to be within valid range. Partition type is checked and
389 * part_validate_eraseblock() is called with the argument of part.
391 * @param id of the parent device
392 * @param part partition to validate
393 * @return 0 if partition is valid, 1 otherwise
395 static int part_validate(struct mtdids *id, struct part_info *part)
397 if (part->size == SIZE_REMAINING)
398 part->size = id->size - part->offset;
400 if (part->offset > id->size) {
401 printf("%s: offset %08llx beyond flash size %08llx\n",
402 id->mtd_id, part->offset, id->size);
406 if ((part->offset + part->size) <= part->offset) {
407 printf("%s%d: partition (%s) size too big\n",
408 MTD_DEV_TYPE(id->type), id->num, part->name);
412 if (part->offset + part->size > id->size) {
413 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
418 * Now we need to check if the partition starts and ends on
419 * sector (eraseblock) regions
421 return part_validate_eraseblock(id, part);
425 * Delete selected partition from the partition list of the specified device.
427 * @param dev device to delete partition from
428 * @param part partition to delete
429 * @return 0 on success, 1 otherwise
431 static int part_del(struct mtd_device *dev, struct part_info *part)
433 u8 current_save_needed = 0;
435 /* if there is only one partition, remove whole device */
436 if (dev->num_parts == 1)
437 return device_del(dev);
439 /* otherwise just delete this partition */
441 if (dev == current_mtd_dev) {
442 /* we are modyfing partitions for the current device,
444 struct part_info *curr_pi;
445 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
448 if (curr_pi == part) {
449 printf("current partition deleted, resetting current to 0\n");
450 current_mtd_partnum = 0;
451 } else if (part->offset <= curr_pi->offset) {
452 current_mtd_partnum--;
454 current_save_needed = 1;
458 list_del(&part->link);
462 if (current_save_needed > 0)
471 * Delete all partitions from parts head list, free memory.
473 * @param head list of partitions to delete
475 static void part_delall(struct list_head *head)
477 struct list_head *entry, *n;
478 struct part_info *part_tmp;
480 /* clean tmp_list and free allocated memory */
481 list_for_each_safe(entry, n, head) {
482 part_tmp = list_entry(entry, struct part_info, link);
490 * Add new partition to the supplied partition list. Make sure partitions are
491 * sorted by offset in ascending order.
493 * @param head list this partition is to be added to
494 * @param new partition to be added
496 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
498 struct list_head *entry;
499 struct part_info *new_pi, *curr_pi;
501 /* link partition to parrent dev */
504 if (list_empty(&dev->parts)) {
505 debug("part_sort_add: list empty\n");
506 list_add(&part->link, &dev->parts);
512 new_pi = list_entry(&part->link, struct part_info, link);
514 /* get current partition info if we are updating current device */
516 if (dev == current_mtd_dev)
517 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
519 list_for_each(entry, &dev->parts) {
520 struct part_info *pi;
522 pi = list_entry(entry, struct part_info, link);
524 /* be compliant with kernel cmdline, allow only one partition at offset zero */
525 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
526 printf("cannot add second partition at offset 0\n");
530 if (new_pi->offset <= pi->offset) {
531 list_add_tail(&part->link, entry);
534 if (curr_pi && (pi->offset <= curr_pi->offset)) {
535 /* we are modyfing partitions for the current
536 * device, update current */
537 current_mtd_partnum++;
546 list_add_tail(&part->link, &dev->parts);
553 * Add provided partition to the partition list of a given device.
555 * @param dev device to which partition is added
556 * @param part partition to be added
557 * @return 0 on success, 1 otherwise
559 static int part_add(struct mtd_device *dev, struct part_info *part)
561 /* verify alignment and size */
562 if (part_validate(dev->id, part) != 0)
565 /* partition is ok, add it to the list */
566 if (part_sort_add(dev, part) != 0)
573 * Parse one partition definition, allocate memory and return pointer to this
574 * location in retpart.
576 * @param partdef pointer to the partition definition string i.e. <part-def>
577 * @param ret output pointer to next char after parse completes (output)
578 * @param retpart pointer to the allocated partition (output)
579 * @return 0 on success, 1 otherwise
581 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
583 struct part_info *part;
588 unsigned int mask_flags;
595 /* fetch the partition size */
597 /* assign all remaining space to this partition */
598 debug("'-': remaining size assigned\n");
599 size = SIZE_REMAINING;
602 size = memsize_parse(p, &p);
603 if (size < MIN_PART_SIZE) {
604 printf("partition size too small (%llx)\n", size);
609 /* check for offset */
610 offset = OFFSET_NOT_SPECIFIED;
613 offset = memsize_parse(p, &p);
616 /* now look for the name */
619 if ((p = strchr(name, ')')) == NULL) {
620 printf("no closing ) found in partition name\n");
623 name_len = p - name + 1;
624 if ((name_len - 1) == 0) {
625 printf("empty partition name\n");
630 /* 0x00000000@0x00000000 */
635 /* test for options */
637 if (strncmp(p, "ro", 2) == 0) {
638 mask_flags |= MTD_WRITEABLE_CMD;
642 /* check for next partition definition */
644 if (size == SIZE_REMAINING) {
646 printf("no partitions allowed after a fill-up partition\n");
650 } else if ((*p == ';') || (*p == '\0')) {
653 printf("unexpected character '%c' at the end of partition\n", *p);
658 /* allocate memory */
659 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
661 printf("out of memory\n");
664 memset(part, 0, sizeof(struct part_info) + name_len);
666 part->offset = offset;
667 part->mask_flags = mask_flags;
668 part->name = (char *)(part + 1);
671 /* copy user provided name */
672 strncpy(part->name, name, name_len - 1);
675 /* auto generated name in form of size@offset */
676 sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
680 part->name[name_len - 1] = '\0';
681 INIT_LIST_HEAD(&part->link);
683 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
684 part->name, part->size,
685 part->offset, part->mask_flags);
692 * Check device number to be within valid range for given device type.
694 * @param type mtd type
695 * @param num mtd number
696 * @param size a pointer to the size of the mtd device (output)
697 * @return 0 if device is valid, 1 otherwise
699 static int mtd_device_validate(u8 type, u8 num, u64 *size)
701 struct mtd_info *mtd = NULL;
703 if (get_mtd_info(type, num, &mtd))
712 * Delete all mtd devices from a supplied devices list, free memory allocated for
713 * each device and delete all device partitions.
715 * @return 0 on success, 1 otherwise
717 static int device_delall(struct list_head *head)
719 struct list_head *entry, *n;
720 struct mtd_device *dev_tmp;
722 /* clean devices list */
723 list_for_each_safe(entry, n, head) {
724 dev_tmp = list_entry(entry, struct mtd_device, link);
726 part_delall(&dev_tmp->parts);
729 INIT_LIST_HEAD(&devices);
735 * If provided device exists it's partitions are deleted, device is removed
736 * from device list and device memory is freed.
738 * @param dev device to be deleted
739 * @return 0 on success, 1 otherwise
741 static int device_del(struct mtd_device *dev)
743 part_delall(&dev->parts);
744 list_del(&dev->link);
747 if (dev == current_mtd_dev) {
748 /* we just deleted current device */
749 if (list_empty(&devices)) {
750 current_mtd_dev = NULL;
752 /* reset first partition from first dev from the
753 * devices list as current */
754 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
755 current_mtd_partnum = 0;
766 * Search global device list and return pointer to the device of type and num
769 * @param type device type
770 * @param num device number
771 * @return NULL if requested device does not exist
773 struct mtd_device *device_find(u8 type, u8 num)
775 struct list_head *entry;
776 struct mtd_device *dev_tmp;
778 list_for_each(entry, &devices) {
779 dev_tmp = list_entry(entry, struct mtd_device, link);
781 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
789 * Add specified device to the global device list.
791 * @param dev device to be added
793 static void device_add(struct mtd_device *dev)
795 u8 current_save_needed = 0;
797 if (list_empty(&devices)) {
798 current_mtd_dev = dev;
799 current_mtd_partnum = 0;
800 current_save_needed = 1;
803 list_add_tail(&dev->link, &devices);
805 if (current_save_needed > 0)
812 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
813 * return pointer to the device structure.
815 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
816 * @param ret output pointer to next char after parse completes (output)
817 * @param retdev pointer to the allocated device (output)
818 * @return 0 on success, 1 otherwise
820 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
822 struct mtd_device *dev;
823 struct part_info *part;
826 unsigned int mtd_id_len;
830 struct list_head *entry, *n;
835 debug("===device_parse===\n");
844 mtd_id = p = mtd_dev;
845 if (!(p = strchr(mtd_id, ':'))) {
846 printf("no <mtd-id> identifier\n");
849 mtd_id_len = p - mtd_id + 1;
852 /* verify if we have a valid device specified */
853 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
854 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
859 pend = strchr(p, ';');
861 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
862 id->type, MTD_DEV_TYPE(id->type),
863 id->num, id->mtd_id);
864 debug("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p);
867 /* parse partitions */
871 if ((dev = device_find(id->type, id->num)) != NULL) {
872 /* if device already exists start at the end of the last partition */
873 part = list_entry(dev->parts.prev, struct part_info, link);
874 offset = part->offset + part->size;
877 while (p && (*p != '\0') && (*p != ';')) {
879 if ((part_parse(p, &p, &part) != 0) || (!part))
882 /* calculate offset when not specified */
883 if (part->offset == OFFSET_NOT_SPECIFIED)
884 part->offset = offset;
886 offset = part->offset;
888 /* verify alignment and size */
889 if (part_validate(id, part) != 0)
892 offset += part->size;
894 /* partition is ok, add it to the list */
895 list_add_tail(&part->link, &tmp_list);
900 part_delall(&tmp_list);
904 if (num_parts == 0) {
905 printf("no partitions for device %s%d (%s)\n",
906 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
910 debug("\ntotal partitions: %d\n", num_parts);
912 /* check for next device presence */
917 } else if (*p == '\0') {
921 printf("unexpected character '%c' at the end of device\n", *p);
928 /* allocate memory for mtd_device structure */
929 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
930 printf("out of memory\n");
933 memset(dev, 0, sizeof(struct mtd_device));
935 dev->num_parts = 0; /* part_sort_add increments num_parts */
936 INIT_LIST_HEAD(&dev->parts);
937 INIT_LIST_HEAD(&dev->link);
939 /* move partitions from tmp_list to dev->parts */
940 list_for_each_safe(entry, n, &tmp_list) {
941 part = list_entry(entry, struct part_info, link);
943 if (part_sort_add(dev, part) != 0) {
956 * Initialize global device list.
958 * @return 0 on success, 1 otherwise
960 static int mtd_devices_init(void)
962 last_parts[0] = '\0';
963 current_mtd_dev = NULL;
966 return device_delall(&devices);
970 * Search global mtdids list and find id of requested type and number.
972 * @return pointer to the id if it exists, NULL otherwise
974 static struct mtdids* id_find(u8 type, u8 num)
976 struct list_head *entry;
979 list_for_each(entry, &mtdids) {
980 id = list_entry(entry, struct mtdids, link);
982 if ((id->type == type) && (id->num == num))
990 * Search global mtdids list and find id of a requested mtd_id.
992 * Note: first argument is not null terminated.
994 * @param mtd_id string containing requested mtd_id
995 * @param mtd_id_len length of supplied mtd_id
996 * @return pointer to the id if it exists, NULL otherwise
998 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1000 struct list_head *entry;
1003 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1004 mtd_id_len, mtd_id, mtd_id_len);
1006 list_for_each(entry, &mtdids) {
1007 id = list_entry(entry, struct mtdids, link);
1009 debug("entry: '%s' (len = %d)\n",
1010 id->mtd_id, strlen(id->mtd_id));
1012 if (mtd_id_len != strlen(id->mtd_id))
1014 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1022 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1023 * return device type and number.
1025 * @param id string describing device id
1026 * @param ret_id output pointer to next char after parse completes (output)
1027 * @param dev_type parsed device type (output)
1028 * @param dev_num parsed device number (output)
1029 * @return 0 on success, 1 otherwise
1031 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1037 if (strncmp(p, "nand", 4) == 0) {
1038 *dev_type = MTD_DEV_TYPE_NAND;
1040 } else if (strncmp(p, "nor", 3) == 0) {
1041 *dev_type = MTD_DEV_TYPE_NOR;
1043 } else if (strncmp(p, "onenand", 7) == 0) {
1044 *dev_type = MTD_DEV_TYPE_ONENAND;
1047 printf("incorrect device type in %s\n", id);
1052 printf("incorrect device number in %s\n", id);
1056 *dev_num = simple_strtoul(p, (char **)&p, 0);
1063 * Process all devices and generate corresponding mtdparts string describing
1064 * all partitions on all devices.
1066 * @param buf output buffer holding generated mtdparts string (output)
1067 * @param buflen buffer size
1068 * @return 0 on success, 1 otherwise
1070 static int generate_mtdparts(char *buf, u32 buflen)
1072 struct list_head *pentry, *dentry;
1073 struct mtd_device *dev;
1074 struct part_info *part, *prev_part;
1079 u32 maxlen = buflen - 1;
1081 debug("--- generate_mtdparts ---\n");
1083 if (list_empty(&devices)) {
1088 sprintf(p, "mtdparts=");
1091 list_for_each(dentry, &devices) {
1092 dev = list_entry(dentry, struct mtd_device, link);
1095 len = strlen(dev->id->mtd_id) + 1;
1098 memcpy(p, dev->id->mtd_id, len - 1);
1103 /* format partitions */
1106 list_for_each(pentry, &dev->parts) {
1107 part = list_entry(pentry, struct part_info, link);
1109 offset = part->offset;
1112 /* partition size */
1113 memsize_format(tmpbuf, size);
1114 len = strlen(tmpbuf);
1117 memcpy(p, tmpbuf, len);
1122 /* add offset only when there is a gap between
1124 if ((!prev_part && (offset != 0)) ||
1125 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1127 memsize_format(tmpbuf, offset);
1128 len = strlen(tmpbuf) + 1;
1132 memcpy(p, tmpbuf, len - 1);
1137 /* copy name only if user supplied */
1138 if(!part->auto_name) {
1139 len = strlen(part->name) + 2;
1144 memcpy(p, part->name, len - 2);
1151 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1160 /* print ',' separator if there are other partitions
1162 if (dev->num_parts > part_cnt) {
1170 /* print ';' separator if there are other devices following */
1171 if (dentry->next != &devices) {
1179 /* we still have at least one char left, as we decremented maxlen at
1186 last_parts[0] = '\0';
1191 * Call generate_mtdparts to process all devices and generate corresponding
1192 * mtdparts string, save it in mtdparts environment variable.
1194 * @param buf output buffer holding generated mtdparts string (output)
1195 * @param buflen buffer size
1196 * @return 0 on success, 1 otherwise
1198 static int generate_mtdparts_save(char *buf, u32 buflen)
1202 ret = generate_mtdparts(buf, buflen);
1204 if ((buf[0] != '\0') && (ret == 0))
1205 setenv("mtdparts", buf);
1207 setenv("mtdparts", NULL);
1212 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1214 * Get the net size (w/o bad blocks) of the given partition.
1216 * @param mtd the mtd info
1217 * @param part the partition
1218 * @return the calculated net size of this partition
1220 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1222 uint64_t i, net_size = 0;
1224 if (!mtd->block_isbad)
1227 for (i = 0; i < part->size; i += mtd->erasesize) {
1228 if (!mtd->block_isbad(mtd, part->offset + i))
1229 net_size += mtd->erasesize;
1236 static void print_partition_table(void)
1238 struct list_head *dentry, *pentry;
1239 struct part_info *part;
1240 struct mtd_device *dev;
1243 list_for_each(dentry, &devices) {
1244 dev = list_entry(dentry, struct mtd_device, link);
1245 /* list partitions for given device */
1247 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1248 struct mtd_info *mtd;
1250 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1253 printf("\ndevice %s%d <%s>, # parts = %d\n",
1254 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1255 dev->id->mtd_id, dev->num_parts);
1256 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1258 list_for_each(pentry, &dev->parts) {
1262 part = list_entry(pentry, struct part_info, link);
1263 net_size = net_part_size(mtd, part);
1264 size_note = part->size == net_size ? " " : " (!)";
1265 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1266 part_num, part->name, part->size,
1267 net_size, size_note, part->offset,
1269 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1270 printf("\ndevice %s%d <%s>, # parts = %d\n",
1271 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1272 dev->id->mtd_id, dev->num_parts);
1273 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1275 list_for_each(pentry, &dev->parts) {
1276 part = list_entry(pentry, struct part_info, link);
1277 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1278 part_num, part->name, part->size,
1279 part->offset, part->mask_flags);
1280 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1285 if (list_empty(&devices))
1286 printf("no partitions defined\n");
1290 * Format and print out a partition list for each device from global device
1293 static void list_partitions(void)
1295 struct part_info *part;
1297 debug("\n---list_partitions---\n");
1298 print_partition_table();
1300 /* current_mtd_dev is not NULL only when we have non empty device list */
1301 if (current_mtd_dev) {
1302 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1304 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1305 MTD_DEV_TYPE(current_mtd_dev->id->type),
1306 current_mtd_dev->id->num, current_mtd_partnum,
1307 part->name, part->size, part->offset);
1309 printf("could not get current partition info\n\n");
1313 printf("\ndefaults:\n");
1314 printf("mtdids : %s\n",
1315 mtdids_default ? mtdids_default : "none");
1317 * Using printf() here results in printbuffer overflow
1318 * if default mtdparts string is greater than console
1319 * printbuffer. Use puts() to prevent system crashes.
1322 puts(mtdparts_default ? mtdparts_default : "none");
1327 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1328 * corresponding device and verify partition number.
1330 * @param id string describing device and partition or partition name
1331 * @param dev pointer to the requested device (output)
1332 * @param part_num verified partition number (output)
1333 * @param part pointer to requested partition (output)
1334 * @return 0 on success, 1 otherwise
1336 int find_dev_and_part(const char *id, struct mtd_device **dev,
1337 u8 *part_num, struct part_info **part)
1339 struct list_head *dentry, *pentry;
1340 u8 type, dnum, pnum;
1343 debug("--- find_dev_and_part ---\nid = %s\n", id);
1345 list_for_each(dentry, &devices) {
1347 *dev = list_entry(dentry, struct mtd_device, link);
1348 list_for_each(pentry, &(*dev)->parts) {
1349 *part = list_entry(pentry, struct part_info, link);
1350 if (strcmp((*part)->name, id) == 0)
1361 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1364 if ((*p++ != ',') || (*p == '\0')) {
1365 printf("no partition number specified\n");
1368 pnum = simple_strtoul(p, (char **)&p, 0);
1370 printf("unexpected trailing character '%c'\n", *p);
1374 if ((*dev = device_find(type, dnum)) == NULL) {
1375 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1379 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1380 printf("no such partition\n");
1391 * Find and delete partition. For partition id format see find_dev_and_part().
1393 * @param id string describing device and partition
1394 * @return 0 on success, 1 otherwise
1396 static int delete_partition(const char *id)
1399 struct mtd_device *dev;
1400 struct part_info *part;
1402 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1404 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1405 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1406 part->name, part->size, part->offset);
1408 if (part_del(dev, part) != 0)
1411 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1412 printf("generated mtdparts too long, resetting to null\n");
1418 printf("partition %s not found\n", id);
1422 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1424 * Increase the size of the given partition so that it's net size is at least
1425 * as large as the size member and such that the next partition would start on a
1426 * good block if it were adjacent to this partition.
1428 * @param mtd the mtd device
1429 * @param part the partition
1430 * @param next_offset pointer to the offset of the next partition after this
1431 * partition's size has been modified (output)
1433 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1434 uint64_t *next_offset)
1436 uint64_t net_size, padding_size = 0;
1439 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1443 * Absorb bad blocks immediately following this
1444 * partition also into the partition, such that
1445 * the next partition starts with a good block.
1448 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1449 mtd->erasesize, &padding_size, &truncated);
1453 padding_size -= mtd->erasesize;
1457 printf("truncated partition %s to %lld bytes\n", part->name,
1458 (uint64_t) net_size + padding_size);
1461 part->size = net_size + padding_size;
1462 *next_offset = part->offset + part->size;
1466 * Adjust all of the partition sizes, such that all partitions are at least
1467 * as big as their mtdparts environment variable sizes and they each start
1470 * @return 0 on success, 1 otherwise
1472 static int spread_partitions(void)
1474 struct list_head *dentry, *pentry;
1475 struct mtd_device *dev;
1476 struct part_info *part;
1477 struct mtd_info *mtd;
1481 list_for_each(dentry, &devices) {
1482 dev = list_entry(dentry, struct mtd_device, link);
1484 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1489 list_for_each(pentry, &dev->parts) {
1490 part = list_entry(pentry, struct part_info, link);
1492 debug("spread_partitions: device = %s%d, partition %d ="
1493 " (%s) 0x%08x@0x%08x\n",
1494 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1495 part_num, part->name, part->size,
1498 if (cur_offs > part->offset)
1499 part->offset = cur_offs;
1501 spread_partition(mtd, part, &cur_offs);
1509 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1510 printf("generated mtdparts too long, resetting to null\n");
1515 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1518 * Accept character string describing mtd partitions and call device_parse()
1519 * for each entry. Add created devices to the global devices list.
1521 * @param mtdparts string specifing mtd partitions
1522 * @return 0 on success, 1 otherwise
1524 static int parse_mtdparts(const char *const mtdparts)
1526 const char *p = mtdparts;
1527 struct mtd_device *dev;
1529 char tmp_parts[MTDPARTS_MAXLEN];
1531 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
1533 /* delete all devices and partitions */
1534 if (mtd_devices_init() != 0) {
1535 printf("could not initialise device list\n");
1539 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1540 if (gd->flags & GD_FLG_ENV_READY) {
1541 p = getenv("mtdparts");
1544 getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
1547 if (strncmp(p, "mtdparts=", 9) != 0) {
1548 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1553 while (p && (*p != '\0')) {
1555 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1558 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1559 dev->id->num, dev->id->mtd_id);
1561 /* check if parsed device is already on the list */
1562 if (device_find(dev->id->type, dev->id->num) != NULL) {
1563 printf("device %s%d redefined, please correct mtdparts variable\n",
1564 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1568 list_add_tail(&dev->link, &devices);
1572 device_delall(&devices);
1580 * Parse provided string describing mtdids mapping (see file header for mtdids
1581 * variable format). Allocate memory for each entry and add all found entries
1582 * to the global mtdids list.
1584 * @param ids mapping string
1585 * @return 0 on success, 1 otherwise
1587 static int parse_mtdids(const char *const ids)
1589 const char *p = ids;
1593 struct list_head *entry, *n;
1594 struct mtdids *id_tmp;
1599 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1601 /* clean global mtdids list */
1602 list_for_each_safe(entry, n, &mtdids) {
1603 id_tmp = list_entry(entry, struct mtdids, link);
1604 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1609 INIT_LIST_HEAD(&mtdids);
1611 while(p && (*p != '\0')) {
1614 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1615 if (mtd_id_parse(p, &p, &type, &num) != 0)
1619 printf("mtdids: incorrect <dev-num>\n");
1624 /* check if requested device exists */
1625 if (mtd_device_validate(type, num, &size) != 0)
1628 /* locate <mtd-id> */
1630 if ((p = strchr(mtd_id, ',')) != NULL) {
1631 mtd_id_len = p - mtd_id + 1;
1634 mtd_id_len = strlen(mtd_id) + 1;
1636 if (mtd_id_len == 0) {
1637 printf("mtdids: no <mtd-id> identifier\n");
1641 /* check if this id is already on the list */
1642 int double_entry = 0;
1643 list_for_each(entry, &mtdids) {
1644 id_tmp = list_entry(entry, struct mtdids, link);
1645 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1651 printf("device id %s%d redefined, please correct mtdids variable\n",
1652 MTD_DEV_TYPE(type), num);
1656 /* allocate mtdids structure */
1657 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1658 printf("out of memory\n");
1661 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1665 id->mtd_id = (char *)(id + 1);
1666 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1667 id->mtd_id[mtd_id_len - 1] = '\0';
1668 INIT_LIST_HEAD(&id->link);
1670 debug("+ id %s%d\t%16lld bytes\t%s\n",
1671 MTD_DEV_TYPE(id->type), id->num,
1672 id->size, id->mtd_id);
1674 list_add_tail(&id->link, &mtdids);
1678 /* clean mtdids list and free allocated memory */
1679 list_for_each_safe(entry, n, &mtdids) {
1680 id_tmp = list_entry(entry, struct mtdids, link);
1691 * Parse and initialize global mtdids mapping and create global
1692 * device/partition list.
1694 * @return 0 on success, 1 otherwise
1696 int mtdparts_init(void)
1698 static int initialized = 0;
1699 const char *ids, *parts;
1700 const char *current_partition;
1702 char tmp_ep[PARTITION_MAXLEN];
1703 char tmp_parts[MTDPARTS_MAXLEN];
1705 debug("\n---mtdparts_init---\n");
1707 INIT_LIST_HEAD(&mtdids);
1708 INIT_LIST_HEAD(&devices);
1709 memset(last_ids, 0, MTDIDS_MAXLEN);
1710 memset(last_parts, 0, MTDPARTS_MAXLEN);
1711 memset(last_partition, 0, PARTITION_MAXLEN);
1716 ids = getenv("mtdids");
1718 * The mtdparts variable tends to be long. If we need to access it
1719 * before the env is relocated, then we need to use our own stack
1720 * buffer. gd->env_buf will be too small.
1722 if (gd->flags & GD_FLG_ENV_READY) {
1723 parts = getenv("mtdparts");
1726 getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
1728 current_partition = getenv("partition");
1730 /* save it for later parsing, cannot rely on current partition pointer
1731 * as 'partition' variable may be updated during init */
1733 if (current_partition)
1734 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1736 debug("last_ids : %s\n", last_ids);
1737 debug("env_ids : %s\n", ids);
1738 debug("last_parts: %s\n", last_parts);
1739 debug("env_parts : %s\n\n", parts);
1741 debug("last_partition : %s\n", last_partition);
1742 debug("env_partition : %s\n", current_partition);
1744 /* if mtdids varible is empty try to use defaults */
1746 if (mtdids_default) {
1747 debug("mtdids variable not defined, using default\n");
1748 ids = mtdids_default;
1749 setenv("mtdids", (char *)ids);
1751 printf("mtdids not defined, no default present\n");
1755 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1756 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1760 /* do no try to use defaults when mtdparts variable is not defined,
1761 * just check the length */
1763 printf("mtdparts variable not set, see 'help mtdparts'\n");
1765 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1766 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1770 /* check if we have already parsed those mtdids */
1771 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1776 if (parse_mtdids(ids) != 0) {
1781 /* ok it's good, save new ids */
1782 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1785 /* parse partitions if either mtdparts or mtdids were updated */
1786 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1787 if (parse_mtdparts(parts) != 0)
1790 if (list_empty(&devices)) {
1791 printf("mtdparts_init: no valid partitions\n");
1795 /* ok it's good, save new parts */
1796 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1798 /* reset first partition from first dev from the list as current */
1799 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1800 current_mtd_partnum = 0;
1803 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1804 MTD_DEV_TYPE(current_mtd_dev->id->type),
1805 current_mtd_dev->id->num, current_mtd_partnum);
1808 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1809 if (!parts && (last_parts[0] != '\0'))
1810 return mtd_devices_init();
1812 /* do not process current partition if mtdparts variable is null */
1816 /* is current partition set in environment? if so, use it */
1817 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1818 struct part_info *p;
1819 struct mtd_device *cdev;
1822 debug("--- getting current partition: %s\n", tmp_ep);
1824 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1825 current_mtd_dev = cdev;
1826 current_mtd_partnum = pnum;
1829 } else if (getenv("partition") == NULL) {
1830 debug("no partition variable set, setting...\n");
1838 * Return pointer to the partition of a requested number from a requested
1841 * @param dev device that is to be searched for a partition
1842 * @param part_num requested partition number
1843 * @return pointer to the part_info, NULL otherwise
1845 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1847 struct list_head *entry;
1848 struct part_info *part;
1854 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1855 part_num, MTD_DEV_TYPE(dev->id->type),
1856 dev->id->num, dev->id->mtd_id);
1858 if (part_num >= dev->num_parts) {
1859 printf("invalid partition number %d for device %s%d (%s)\n",
1860 part_num, MTD_DEV_TYPE(dev->id->type),
1861 dev->id->num, dev->id->mtd_id);
1865 /* locate partition number, return it */
1867 list_for_each(entry, &dev->parts) {
1868 part = list_entry(entry, struct part_info, link);
1870 if (part_num == num++) {
1878 /***************************************************/
1879 /* U-boot commands */
1880 /***************************************************/
1881 /* command line only */
1883 * Routine implementing u-boot chpart command. Sets new current partition based
1884 * on the user supplied partition id. For partition id format see find_dev_and_part().
1886 * @param cmdtp command internal data
1887 * @param flag command flag
1888 * @param argc number of arguments supplied to the command
1889 * @param argv arguments list
1890 * @return 0 on success, 1 otherwise
1892 static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1894 /* command line only */
1895 struct mtd_device *dev;
1896 struct part_info *part;
1899 if (mtdparts_init() !=0)
1903 printf("no partition id specified\n");
1907 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1910 current_mtd_dev = dev;
1911 current_mtd_partnum = pnum;
1914 printf("partition changed to %s%d,%d\n",
1915 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1921 * Routine implementing u-boot mtdparts command. Initialize/update default global
1922 * partition list and process user partition request (list, add, del).
1924 * @param cmdtp command internal data
1925 * @param flag command flag
1926 * @param argc number of arguments supplied to the command
1927 * @param argv arguments list
1928 * @return 0 on success, 1 otherwise
1930 static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1931 char * const argv[])
1934 if (strcmp(argv[1], "default") == 0) {
1935 setenv("mtdids", (char *)mtdids_default);
1936 setenv("mtdparts", (char *)mtdparts_default);
1937 setenv("partition", NULL);
1941 } else if (strcmp(argv[1], "delall") == 0) {
1942 /* this may be the first run, initialize lists if needed */
1945 setenv("mtdparts", NULL);
1947 /* mtd_devices_init() calls current_save() */
1948 return mtd_devices_init();
1952 /* make sure we are in sync with env variables */
1953 if (mtdparts_init() != 0)
1961 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1962 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1963 #define PART_ADD_DESC_MAXLEN 64
1964 char tmpbuf[PART_ADD_DESC_MAXLEN];
1965 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1966 struct mtd_info *mtd;
1967 uint64_t next_offset;
1970 struct mtd_device *dev;
1971 struct mtd_device *dev_tmp;
1973 struct part_info *p;
1975 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1978 if ((id = id_find(type, num)) == NULL) {
1979 printf("no such device %s defined in mtdids variable\n", argv[2]);
1983 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1984 len += strlen(argv[3]); /* size@offset */
1985 len += strlen(argv[4]) + 2; /* '(' name ')' */
1986 if (argv[5] && (strlen(argv[5]) == 2))
1987 len += 2; /* 'ro' */
1989 if (len >= PART_ADD_DESC_MAXLEN) {
1990 printf("too long partition description\n");
1993 sprintf(tmpbuf, "%s:%s(%s)%s",
1994 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
1995 debug("add tmpbuf: %s\n", tmpbuf);
1997 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2000 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
2001 dev->id->num, dev->id->mtd_id);
2003 p = list_entry(dev->parts.next, struct part_info, link);
2005 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2006 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2009 if (!strcmp(&argv[1][3], ".spread")) {
2010 spread_partition(mtd, p, &next_offset);
2011 debug("increased %s to %d bytes\n", p->name, p->size);
2015 dev_tmp = device_find(dev->id->type, dev->id->num);
2016 if (dev_tmp == NULL) {
2018 } else if (part_add(dev_tmp, p) != 0) {
2019 /* merge new partition with existing ones*/
2024 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2025 printf("generated mtdparts too long, resetting to null\n");
2032 /* mtdparts del part-id */
2033 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2034 debug("del: part-id = %s\n", argv[2]);
2036 return delete_partition(argv[2]);
2039 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2040 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2041 return spread_partitions();
2042 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2044 return CMD_RET_USAGE;
2047 /***************************************************/
2049 chpart, 2, 0, do_chpart,
2050 "change active partition",
2052 " - change active partition (e.g. part-id = nand0,1)"
2055 #ifdef CONFIG_SYS_LONGHELP
2056 static char mtdparts_help_text[] =
2058 " - list partition table\n"
2060 " - delete all partitions\n"
2061 "mtdparts del part-id\n"
2062 " - delete partition (e.g. part-id = nand0,1)\n"
2063 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2064 " - add partition\n"
2065 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2066 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2067 " - add partition, padding size by skipping bad blocks\n"
2069 "mtdparts default\n"
2070 " - reset partition table to defaults\n"
2071 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2073 " - adjust the sizes of the partitions so they are\n"
2074 " at least as big as the mtdparts variable specifies\n"
2075 " and they each start on a good block\n\n"
2078 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2080 "this command uses three environment variables:\n\n"
2081 "'partition' - keeps current partition identifier\n\n"
2082 "partition := <part-id>\n"
2083 "<part-id> := <dev-id>,part_num\n\n"
2084 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2085 "mtdids=<idmap>[,<idmap>,...]\n\n"
2086 "<idmap> := <dev-id>=<mtd-id>\n"
2087 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2088 "<dev-num> := mtd device number, 0...\n"
2089 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2090 "'mtdparts' - partition list\n\n"
2091 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2092 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2093 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2094 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2095 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2096 "<offset> := partition start offset within the device\n"
2097 "<name> := '(' NAME ')'\n"
2098 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2102 mtdparts, 6, 0, do_mtdparts,
2103 "define flash/nand partitions", mtdparts_help_text
2105 /***************************************************/