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 #ifdef CONFIG_MTDIDS_DEFAULT
114 #define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
116 #define MTDIDS_DEFAULT NULL
119 #if !defined(MTDPARTS_DEFAULT)
120 #ifdef CONFIG_MTDPARTS_DEFAULT
121 #define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
123 #define MTDPARTS_DEFAULT NULL
126 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
127 extern void board_mtdparts_default(const char **mtdids, const char **mtdparts);
129 static const char *mtdids_default = MTDIDS_DEFAULT;
130 static const char *mtdparts_default = MTDPARTS_DEFAULT;
132 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
133 #define MTDIDS_MAXLEN 128
134 #define MTDPARTS_MAXLEN 512
135 #define PARTITION_MAXLEN 16
136 static char last_ids[MTDIDS_MAXLEN + 1];
137 static char last_parts[MTDPARTS_MAXLEN + 1];
138 static char last_partition[PARTITION_MAXLEN + 1];
140 /* low level jffs2 cache cleaning routine */
141 extern void jffs2_free_cache(struct part_info *part);
143 /* mtdids mapping list, filled by parse_ids() */
144 static struct list_head mtdids;
146 /* device/partition list, parse_cmdline() parses into here */
147 static struct list_head devices;
149 /* current active device and partition number */
150 struct mtd_device *current_mtd_dev = NULL;
151 u8 current_mtd_partnum = 0;
155 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
157 /* command line only routines */
158 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
159 static int device_del(struct mtd_device *dev);
162 * Parses a string into a number. The number stored at ptr is
163 * potentially suffixed with K (for kilobytes, or 1024 bytes),
164 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
165 * 1073741824). If the number is suffixed with K, M, or G, then
166 * the return value is the number multiplied by one kilobyte, one
167 * megabyte, or one gigabyte, respectively.
169 * @param ptr where parse begins
170 * @param retptr output pointer to next char after parse completes (output)
171 * @return resulting unsigned int
173 static u64 memsize_parse (const char *const ptr, const char **retptr)
175 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
196 * Format string describing supplied size. This routine does the opposite job
197 * to memsize_parse(). Size in bytes is converted to string and if possible
198 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
200 * Note, that this routine does not check for buffer overflow, it's the caller
201 * who must assure enough space.
203 * @param buf output buffer
204 * @param size size to be converted to string
206 static void memsize_format(char *buf, u64 size)
208 #define SIZE_GB ((u32)1024*1024*1024)
209 #define SIZE_MB ((u32)1024*1024)
210 #define SIZE_KB ((u32)1024)
212 if ((size % SIZE_GB) == 0)
213 sprintf(buf, "%llug", size/SIZE_GB);
214 else if ((size % SIZE_MB) == 0)
215 sprintf(buf, "%llum", size/SIZE_MB);
216 else if (size % SIZE_KB == 0)
217 sprintf(buf, "%lluk", size/SIZE_KB);
219 sprintf(buf, "%llu", size);
223 * This routine does global indexing of all partitions. Resulting index for
224 * current partition is saved in 'mtddevnum'. Current partition name in
227 static void index_partitions(void)
230 struct part_info *part;
231 struct list_head *dentry;
232 struct mtd_device *dev;
234 debug("--- index partitions ---\n");
236 if (current_mtd_dev) {
238 list_for_each(dentry, &devices) {
239 dev = list_entry(dentry, struct mtd_device, link);
240 if (dev == current_mtd_dev) {
241 mtddevnum += current_mtd_partnum;
242 env_set_ulong("mtddevnum", mtddevnum);
243 debug("=> mtddevnum %d,\n", mtddevnum);
246 mtddevnum += dev->num_parts;
249 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
251 env_set("mtddevname", part->name);
253 debug("=> mtddevname %s\n", part->name);
255 env_set("mtddevname", NULL);
257 debug("=> mtddevname NULL\n");
260 env_set("mtddevnum", NULL);
261 env_set("mtddevname", NULL);
263 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
268 * Save current device and partition in environment variable 'partition'.
270 static void current_save(void)
274 debug("--- current_save ---\n");
276 if (current_mtd_dev) {
277 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
278 current_mtd_dev->id->num, current_mtd_partnum);
280 env_set("partition", buf);
281 strncpy(last_partition, buf, 16);
283 debug("=> partition %s\n", buf);
285 env_set("partition", NULL);
286 last_partition[0] = '\0';
288 debug("=> partition NULL\n");
295 * Produce a mtd_info given a type and num.
297 * @param type mtd type
298 * @param num mtd number
299 * @param mtd a pointer to an mtd_info instance (output)
300 * @return 0 if device is valid, 1 otherwise
302 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
306 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
307 *mtd = get_mtd_device_nm(mtd_dev);
309 printf("Device %s not found!\n", mtd_dev);
312 put_mtd_device(*mtd);
318 * Performs sanity check for supplied flash partition.
319 * Table of existing MTD flash devices is searched and partition device
320 * is located. Alignment with the granularity of nand erasesize is verified.
322 * @param id of the parent device
323 * @param part partition to validate
324 * @return 0 if partition is valid, 1 otherwise
326 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
328 struct mtd_info *mtd = NULL;
333 if (get_mtd_info(id->type, id->num, &mtd))
336 part->sector_size = mtd->erasesize;
338 if (!mtd->numeraseregions) {
340 * Only one eraseregion (NAND, OneNAND or uniform NOR),
341 * checking for alignment is easy here
343 offset = part->offset;
344 if (do_div(offset, mtd->erasesize)) {
345 printf("%s%d: partition (%s) start offset"
346 "alignment incorrect\n",
347 MTD_DEV_TYPE(id->type), id->num, part->name);
352 if (do_div(size, mtd->erasesize)) {
353 printf("%s%d: partition (%s) size alignment incorrect\n",
354 MTD_DEV_TYPE(id->type), id->num, part->name);
359 * Multiple eraseregions (non-uniform NOR),
360 * checking for alignment is more complex here
363 /* Check start alignment */
364 for (i = 0; i < mtd->numeraseregions; i++) {
365 start = mtd->eraseregions[i].offset;
366 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
367 if (part->offset == start)
369 start += mtd->eraseregions[i].erasesize;
373 printf("%s%d: partition (%s) start offset alignment incorrect\n",
374 MTD_DEV_TYPE(id->type), id->num, part->name);
379 /* Check end/size alignment */
380 for (i = 0; i < mtd->numeraseregions; i++) {
381 start = mtd->eraseregions[i].offset;
382 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
383 if ((part->offset + part->size) == start)
385 start += mtd->eraseregions[i].erasesize;
388 /* Check last sector alignment */
389 if ((part->offset + part->size) == start)
392 printf("%s%d: partition (%s) size alignment incorrect\n",
393 MTD_DEV_TYPE(id->type), id->num, part->name);
405 * Performs sanity check for supplied partition. Offset and size are
406 * verified to be within valid range. Partition type is checked and
407 * part_validate_eraseblock() is called with the argument of part.
409 * @param id of the parent device
410 * @param part partition to validate
411 * @return 0 if partition is valid, 1 otherwise
413 static int part_validate(struct mtdids *id, struct part_info *part)
415 if (part->size == SIZE_REMAINING)
416 part->size = id->size - part->offset;
418 if (part->offset > id->size) {
419 printf("%s: offset %08llx beyond flash size %08llx\n",
420 id->mtd_id, part->offset, id->size);
424 if ((part->offset + part->size) <= part->offset) {
425 printf("%s%d: partition (%s) size too big\n",
426 MTD_DEV_TYPE(id->type), id->num, part->name);
430 if (part->offset + part->size > id->size) {
431 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
436 * Now we need to check if the partition starts and ends on
437 * sector (eraseblock) regions
439 return part_validate_eraseblock(id, part);
443 * Delete selected partition from the partition list of the specified device.
445 * @param dev device to delete partition from
446 * @param part partition to delete
447 * @return 0 on success, 1 otherwise
449 static int part_del(struct mtd_device *dev, struct part_info *part)
451 u8 current_save_needed = 0;
453 /* if there is only one partition, remove whole device */
454 if (dev->num_parts == 1)
455 return device_del(dev);
457 /* otherwise just delete this partition */
459 if (dev == current_mtd_dev) {
460 /* we are modyfing partitions for the current device,
462 struct part_info *curr_pi;
463 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
466 if (curr_pi == part) {
467 printf("current partition deleted, resetting current to 0\n");
468 current_mtd_partnum = 0;
469 } else if (part->offset <= curr_pi->offset) {
470 current_mtd_partnum--;
472 current_save_needed = 1;
476 list_del(&part->link);
480 if (current_save_needed > 0)
489 * Delete all partitions from parts head list, free memory.
491 * @param head list of partitions to delete
493 static void part_delall(struct list_head *head)
495 struct list_head *entry, *n;
496 struct part_info *part_tmp;
498 /* clean tmp_list and free allocated memory */
499 list_for_each_safe(entry, n, head) {
500 part_tmp = list_entry(entry, struct part_info, link);
508 * Add new partition to the supplied partition list. Make sure partitions are
509 * sorted by offset in ascending order.
511 * @param head list this partition is to be added to
512 * @param new partition to be added
514 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
516 struct list_head *entry;
517 struct part_info *new_pi, *curr_pi;
519 /* link partition to parrent dev */
522 if (list_empty(&dev->parts)) {
523 debug("part_sort_add: list empty\n");
524 list_add(&part->link, &dev->parts);
530 new_pi = list_entry(&part->link, struct part_info, link);
532 /* get current partition info if we are updating current device */
534 if (dev == current_mtd_dev)
535 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
537 list_for_each(entry, &dev->parts) {
538 struct part_info *pi;
540 pi = list_entry(entry, struct part_info, link);
542 /* be compliant with kernel cmdline, allow only one partition at offset zero */
543 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
544 printf("cannot add second partition at offset 0\n");
548 if (new_pi->offset <= pi->offset) {
549 list_add_tail(&part->link, entry);
552 if (curr_pi && (pi->offset <= curr_pi->offset)) {
553 /* we are modyfing partitions for the current
554 * device, update current */
555 current_mtd_partnum++;
564 list_add_tail(&part->link, &dev->parts);
571 * Add provided partition to the partition list of a given device.
573 * @param dev device to which partition is added
574 * @param part partition to be added
575 * @return 0 on success, 1 otherwise
577 static int part_add(struct mtd_device *dev, struct part_info *part)
579 /* verify alignment and size */
580 if (part_validate(dev->id, part) != 0)
583 /* partition is ok, add it to the list */
584 if (part_sort_add(dev, part) != 0)
591 * Parse one partition definition, allocate memory and return pointer to this
592 * location in retpart.
594 * @param partdef pointer to the partition definition string i.e. <part-def>
595 * @param ret output pointer to next char after parse completes (output)
596 * @param retpart pointer to the allocated partition (output)
597 * @return 0 on success, 1 otherwise
599 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
601 struct part_info *part;
606 unsigned int mask_flags;
613 /* fetch the partition size */
615 /* assign all remaining space to this partition */
616 debug("'-': remaining size assigned\n");
617 size = SIZE_REMAINING;
620 size = memsize_parse(p, &p);
621 if (size < MIN_PART_SIZE) {
622 printf("partition size too small (%llx)\n", size);
627 /* check for offset */
628 offset = OFFSET_NOT_SPECIFIED;
631 offset = memsize_parse(p, &p);
634 /* now look for the name */
637 if ((p = strchr(name, ')')) == NULL) {
638 printf("no closing ) found in partition name\n");
641 name_len = p - name + 1;
642 if ((name_len - 1) == 0) {
643 printf("empty partition name\n");
648 /* 0x00000000@0x00000000 */
653 /* test for options */
655 if (strncmp(p, "ro", 2) == 0) {
656 mask_flags |= MTD_WRITEABLE_CMD;
660 /* check for next partition definition */
662 if (size == SIZE_REMAINING) {
664 printf("no partitions allowed after a fill-up partition\n");
668 } else if ((*p == ';') || (*p == '\0')) {
671 printf("unexpected character '%c' at the end of partition\n", *p);
676 /* allocate memory */
677 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
679 printf("out of memory\n");
682 memset(part, 0, sizeof(struct part_info) + name_len);
684 part->offset = offset;
685 part->mask_flags = mask_flags;
686 part->name = (char *)(part + 1);
689 /* copy user provided name */
690 strncpy(part->name, name, name_len - 1);
693 /* auto generated name in form of size@offset */
694 sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
698 part->name[name_len - 1] = '\0';
699 INIT_LIST_HEAD(&part->link);
701 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
702 part->name, part->size,
703 part->offset, part->mask_flags);
710 * Check device number to be within valid range for given device type.
712 * @param type mtd type
713 * @param num mtd number
714 * @param size a pointer to the size of the mtd device (output)
715 * @return 0 if device is valid, 1 otherwise
717 static int mtd_device_validate(u8 type, u8 num, u64 *size)
719 struct mtd_info *mtd = NULL;
721 if (get_mtd_info(type, num, &mtd))
730 * Delete all mtd devices from a supplied devices list, free memory allocated for
731 * each device and delete all device partitions.
733 * @return 0 on success, 1 otherwise
735 static int device_delall(struct list_head *head)
737 struct list_head *entry, *n;
738 struct mtd_device *dev_tmp;
740 /* clean devices list */
741 list_for_each_safe(entry, n, head) {
742 dev_tmp = list_entry(entry, struct mtd_device, link);
744 part_delall(&dev_tmp->parts);
747 INIT_LIST_HEAD(&devices);
753 * If provided device exists it's partitions are deleted, device is removed
754 * from device list and device memory is freed.
756 * @param dev device to be deleted
757 * @return 0 on success, 1 otherwise
759 static int device_del(struct mtd_device *dev)
761 part_delall(&dev->parts);
762 list_del(&dev->link);
765 if (dev == current_mtd_dev) {
766 /* we just deleted current device */
767 if (list_empty(&devices)) {
768 current_mtd_dev = NULL;
770 /* reset first partition from first dev from the
771 * devices list as current */
772 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
773 current_mtd_partnum = 0;
784 * Search global device list and return pointer to the device of type and num
787 * @param type device type
788 * @param num device number
789 * @return NULL if requested device does not exist
791 struct mtd_device *device_find(u8 type, u8 num)
793 struct list_head *entry;
794 struct mtd_device *dev_tmp;
796 list_for_each(entry, &devices) {
797 dev_tmp = list_entry(entry, struct mtd_device, link);
799 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
807 * Add specified device to the global device list.
809 * @param dev device to be added
811 static void device_add(struct mtd_device *dev)
813 u8 current_save_needed = 0;
815 if (list_empty(&devices)) {
816 current_mtd_dev = dev;
817 current_mtd_partnum = 0;
818 current_save_needed = 1;
821 list_add_tail(&dev->link, &devices);
823 if (current_save_needed > 0)
830 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
831 * return pointer to the device structure.
833 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
834 * @param ret output pointer to next char after parse completes (output)
835 * @param retdev pointer to the allocated device (output)
836 * @return 0 on success, 1 otherwise
838 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
840 struct mtd_device *dev;
841 struct part_info *part;
844 unsigned int mtd_id_len;
848 struct list_head *entry, *n;
853 debug("===device_parse===\n");
862 mtd_id = p = mtd_dev;
863 if (!(p = strchr(mtd_id, ':'))) {
864 printf("no <mtd-id> identifier\n");
867 mtd_id_len = p - mtd_id + 1;
870 /* verify if we have a valid device specified */
871 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
872 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
877 pend = strchr(p, ';');
879 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
880 id->type, MTD_DEV_TYPE(id->type),
881 id->num, id->mtd_id);
882 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
885 /* parse partitions */
889 if ((dev = device_find(id->type, id->num)) != NULL) {
890 /* if device already exists start at the end of the last partition */
891 part = list_entry(dev->parts.prev, struct part_info, link);
892 offset = part->offset + part->size;
895 while (p && (*p != '\0') && (*p != ';')) {
897 if ((part_parse(p, &p, &part) != 0) || (!part))
900 /* calculate offset when not specified */
901 if (part->offset == OFFSET_NOT_SPECIFIED)
902 part->offset = offset;
904 offset = part->offset;
906 /* verify alignment and size */
907 if (part_validate(id, part) != 0)
910 offset += part->size;
912 /* partition is ok, add it to the list */
913 list_add_tail(&part->link, &tmp_list);
918 part_delall(&tmp_list);
922 debug("\ntotal partitions: %d\n", num_parts);
924 /* check for next device presence */
929 } else if (*p == '\0') {
933 printf("unexpected character '%c' at the end of device\n", *p);
940 /* allocate memory for mtd_device structure */
941 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
942 printf("out of memory\n");
945 memset(dev, 0, sizeof(struct mtd_device));
947 dev->num_parts = 0; /* part_sort_add increments num_parts */
948 INIT_LIST_HEAD(&dev->parts);
949 INIT_LIST_HEAD(&dev->link);
951 /* move partitions from tmp_list to dev->parts */
952 list_for_each_safe(entry, n, &tmp_list) {
953 part = list_entry(entry, struct part_info, link);
955 if (part_sort_add(dev, part) != 0) {
968 * Initialize global device list.
970 * @return 0 on success, 1 otherwise
972 static int mtd_devices_init(void)
974 last_parts[0] = '\0';
975 current_mtd_dev = NULL;
978 return device_delall(&devices);
982 * Search global mtdids list and find id of requested type and number.
984 * @return pointer to the id if it exists, NULL otherwise
986 static struct mtdids* id_find(u8 type, u8 num)
988 struct list_head *entry;
991 list_for_each(entry, &mtdids) {
992 id = list_entry(entry, struct mtdids, link);
994 if ((id->type == type) && (id->num == num))
1002 * Search global mtdids list and find id of a requested mtd_id.
1004 * Note: first argument is not null terminated.
1006 * @param mtd_id string containing requested mtd_id
1007 * @param mtd_id_len length of supplied mtd_id
1008 * @return pointer to the id if it exists, NULL otherwise
1010 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1012 struct list_head *entry;
1015 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1016 mtd_id_len, mtd_id, mtd_id_len);
1018 list_for_each(entry, &mtdids) {
1019 id = list_entry(entry, struct mtdids, link);
1021 debug("entry: '%s' (len = %zu)\n",
1022 id->mtd_id, strlen(id->mtd_id));
1024 if (mtd_id_len != strlen(id->mtd_id))
1026 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1034 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1035 * return device type and number.
1037 * @param id string describing device id
1038 * @param ret_id output pointer to next char after parse completes (output)
1039 * @param dev_type parsed device type (output)
1040 * @param dev_num parsed device number (output)
1041 * @return 0 on success, 1 otherwise
1043 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1049 if (strncmp(p, "nand", 4) == 0) {
1050 *dev_type = MTD_DEV_TYPE_NAND;
1052 } else if (strncmp(p, "nor", 3) == 0) {
1053 *dev_type = MTD_DEV_TYPE_NOR;
1055 } else if (strncmp(p, "onenand", 7) == 0) {
1056 *dev_type = MTD_DEV_TYPE_ONENAND;
1059 printf("incorrect device type in %s\n", id);
1064 printf("incorrect device number in %s\n", id);
1068 *dev_num = simple_strtoul(p, (char **)&p, 0);
1075 * Process all devices and generate corresponding mtdparts string describing
1076 * all partitions on all devices.
1078 * @param buf output buffer holding generated mtdparts string (output)
1079 * @param buflen buffer size
1080 * @return 0 on success, 1 otherwise
1082 static int generate_mtdparts(char *buf, u32 buflen)
1084 struct list_head *pentry, *dentry;
1085 struct mtd_device *dev;
1086 struct part_info *part, *prev_part;
1091 u32 maxlen = buflen - 1;
1093 debug("--- generate_mtdparts ---\n");
1095 if (list_empty(&devices)) {
1100 strcpy(p, "mtdparts=");
1103 list_for_each(dentry, &devices) {
1104 dev = list_entry(dentry, struct mtd_device, link);
1107 len = strlen(dev->id->mtd_id) + 1;
1110 memcpy(p, dev->id->mtd_id, len - 1);
1115 /* format partitions */
1118 list_for_each(pentry, &dev->parts) {
1119 part = list_entry(pentry, struct part_info, link);
1121 offset = part->offset;
1124 /* partition size */
1125 memsize_format(tmpbuf, size);
1126 len = strlen(tmpbuf);
1129 memcpy(p, tmpbuf, len);
1134 /* add offset only when there is a gap between
1136 if ((!prev_part && (offset != 0)) ||
1137 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1139 memsize_format(tmpbuf, offset);
1140 len = strlen(tmpbuf) + 1;
1144 memcpy(p, tmpbuf, len - 1);
1149 /* copy name only if user supplied */
1150 if(!part->auto_name) {
1151 len = strlen(part->name) + 2;
1156 memcpy(p, part->name, len - 2);
1163 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1172 /* print ',' separator if there are other partitions
1174 if (dev->num_parts > part_cnt) {
1182 /* print ';' separator if there are other devices following */
1183 if (dentry->next != &devices) {
1191 /* we still have at least one char left, as we decremented maxlen at
1198 last_parts[0] = '\0';
1203 * Call generate_mtdparts to process all devices and generate corresponding
1204 * mtdparts string, save it in mtdparts environment variable.
1206 * @param buf output buffer holding generated mtdparts string (output)
1207 * @param buflen buffer size
1208 * @return 0 on success, 1 otherwise
1210 static int generate_mtdparts_save(char *buf, u32 buflen)
1214 ret = generate_mtdparts(buf, buflen);
1216 if ((buf[0] != '\0') && (ret == 0))
1217 env_set("mtdparts", buf);
1219 env_set("mtdparts", NULL);
1224 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1226 * Get the net size (w/o bad blocks) of the given partition.
1228 * @param mtd the mtd info
1229 * @param part the partition
1230 * @return the calculated net size of this partition
1232 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1234 uint64_t i, net_size = 0;
1236 if (!mtd->block_isbad)
1239 for (i = 0; i < part->size; i += mtd->erasesize) {
1240 if (!mtd->block_isbad(mtd, part->offset + i))
1241 net_size += mtd->erasesize;
1248 static void print_partition_table(void)
1250 struct list_head *dentry, *pentry;
1251 struct part_info *part;
1252 struct mtd_device *dev;
1255 list_for_each(dentry, &devices) {
1256 dev = list_entry(dentry, struct mtd_device, link);
1257 /* list partitions for given device */
1259 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1260 struct mtd_info *mtd;
1262 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1265 printf("\ndevice %s%d <%s>, # parts = %d\n",
1266 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1267 dev->id->mtd_id, dev->num_parts);
1268 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1270 list_for_each(pentry, &dev->parts) {
1274 part = list_entry(pentry, struct part_info, link);
1275 net_size = net_part_size(mtd, part);
1276 size_note = part->size == net_size ? " " : " (!)";
1277 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1278 part_num, part->name, part->size,
1279 net_size, size_note, part->offset,
1281 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1282 printf("\ndevice %s%d <%s>, # parts = %d\n",
1283 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1284 dev->id->mtd_id, dev->num_parts);
1285 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1287 list_for_each(pentry, &dev->parts) {
1288 part = list_entry(pentry, struct part_info, link);
1289 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1290 part_num, part->name, part->size,
1291 part->offset, part->mask_flags);
1292 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1297 if (list_empty(&devices))
1298 printf("no partitions defined\n");
1302 * Format and print out a partition list for each device from global device
1305 static void list_partitions(void)
1307 struct part_info *part;
1309 debug("\n---list_partitions---\n");
1310 print_partition_table();
1312 /* current_mtd_dev is not NULL only when we have non empty device list */
1313 if (current_mtd_dev) {
1314 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1316 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1317 MTD_DEV_TYPE(current_mtd_dev->id->type),
1318 current_mtd_dev->id->num, current_mtd_partnum,
1319 part->name, part->size, part->offset);
1321 printf("could not get current partition info\n\n");
1325 printf("\ndefaults:\n");
1326 printf("mtdids : %s\n",
1327 mtdids_default ? mtdids_default : "none");
1329 * Using printf() here results in printbuffer overflow
1330 * if default mtdparts string is greater than console
1331 * printbuffer. Use puts() to prevent system crashes.
1334 puts(mtdparts_default ? mtdparts_default : "none");
1339 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1340 * corresponding device and verify partition number.
1342 * @param id string describing device and partition or partition name
1343 * @param dev pointer to the requested device (output)
1344 * @param part_num verified partition number (output)
1345 * @param part pointer to requested partition (output)
1346 * @return 0 on success, 1 otherwise
1348 int find_dev_and_part(const char *id, struct mtd_device **dev,
1349 u8 *part_num, struct part_info **part)
1351 struct list_head *dentry, *pentry;
1352 u8 type, dnum, pnum;
1355 debug("--- find_dev_and_part ---\nid = %s\n", id);
1357 list_for_each(dentry, &devices) {
1359 *dev = list_entry(dentry, struct mtd_device, link);
1360 list_for_each(pentry, &(*dev)->parts) {
1361 *part = list_entry(pentry, struct part_info, link);
1362 if (strcmp((*part)->name, id) == 0)
1373 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1376 if ((*p++ != ',') || (*p == '\0')) {
1377 printf("no partition number specified\n");
1380 pnum = simple_strtoul(p, (char **)&p, 0);
1382 printf("unexpected trailing character '%c'\n", *p);
1386 if ((*dev = device_find(type, dnum)) == NULL) {
1387 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1391 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1392 printf("no such partition\n");
1403 * Find and delete partition. For partition id format see find_dev_and_part().
1405 * @param id string describing device and partition
1406 * @return 0 on success, 1 otherwise
1408 static int delete_partition(const char *id)
1411 struct mtd_device *dev;
1412 struct part_info *part;
1414 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1416 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1417 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1418 part->name, part->size, part->offset);
1420 if (part_del(dev, part) != 0)
1423 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1424 printf("generated mtdparts too long, resetting to null\n");
1430 printf("partition %s not found\n", id);
1434 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1436 * Increase the size of the given partition so that it's net size is at least
1437 * as large as the size member and such that the next partition would start on a
1438 * good block if it were adjacent to this partition.
1440 * @param mtd the mtd device
1441 * @param part the partition
1442 * @param next_offset pointer to the offset of the next partition after this
1443 * partition's size has been modified (output)
1445 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1446 uint64_t *next_offset)
1448 uint64_t net_size, padding_size = 0;
1451 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1455 * Absorb bad blocks immediately following this
1456 * partition also into the partition, such that
1457 * the next partition starts with a good block.
1460 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1461 mtd->erasesize, &padding_size, &truncated);
1465 padding_size -= mtd->erasesize;
1469 printf("truncated partition %s to %lld bytes\n", part->name,
1470 (uint64_t) net_size + padding_size);
1473 part->size = net_size + padding_size;
1474 *next_offset = part->offset + part->size;
1478 * Adjust all of the partition sizes, such that all partitions are at least
1479 * as big as their mtdparts environment variable sizes and they each start
1482 * @return 0 on success, 1 otherwise
1484 static int spread_partitions(void)
1486 struct list_head *dentry, *pentry;
1487 struct mtd_device *dev;
1488 struct part_info *part;
1489 struct mtd_info *mtd;
1493 list_for_each(dentry, &devices) {
1494 dev = list_entry(dentry, struct mtd_device, link);
1496 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1501 list_for_each(pentry, &dev->parts) {
1502 part = list_entry(pentry, struct part_info, link);
1504 debug("spread_partitions: device = %s%d, partition %d ="
1505 " (%s) 0x%08llx@0x%08llx\n",
1506 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1507 part_num, part->name, part->size,
1510 if (cur_offs > part->offset)
1511 part->offset = cur_offs;
1513 spread_partition(mtd, part, &cur_offs);
1521 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1522 printf("generated mtdparts too long, resetting to null\n");
1527 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1530 * The mtdparts variable tends to be long. If we need to access it
1531 * before the env is relocated, then we need to use our own stack
1532 * buffer. gd->env_buf will be too small.
1534 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1535 * @return mtdparts variable string, NULL if not found
1537 static const char *env_get_mtdparts(char *buf)
1539 if (gd->flags & GD_FLG_ENV_READY)
1540 return env_get("mtdparts");
1541 if (env_get_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1)
1547 * Accept character string describing mtd partitions and call device_parse()
1548 * for each entry. Add created devices to the global devices list.
1550 * @param mtdparts string specifing mtd partitions
1551 * @return 0 on success, 1 otherwise
1553 static int parse_mtdparts(const char *const mtdparts)
1556 struct mtd_device *dev;
1558 char tmp_parts[MTDPARTS_MAXLEN];
1560 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts);
1562 /* delete all devices and partitions */
1563 if (mtd_devices_init() != 0) {
1564 printf("could not initialise device list\n");
1568 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1569 p = env_get_mtdparts(tmp_parts);
1573 if (strncmp(p, "mtdparts=", 9) != 0) {
1574 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1579 while (*p != '\0') {
1581 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1584 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1585 dev->id->num, dev->id->mtd_id);
1587 /* check if parsed device is already on the list */
1588 if (device_find(dev->id->type, dev->id->num) != NULL) {
1589 printf("device %s%d redefined, please correct mtdparts variable\n",
1590 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1594 list_add_tail(&dev->link, &devices);
1599 device_delall(&devices);
1606 * Parse provided string describing mtdids mapping (see file header for mtdids
1607 * variable format). Allocate memory for each entry and add all found entries
1608 * to the global mtdids list.
1610 * @param ids mapping string
1611 * @return 0 on success, 1 otherwise
1613 static int parse_mtdids(const char *const ids)
1615 const char *p = ids;
1619 struct list_head *entry, *n;
1620 struct mtdids *id_tmp;
1625 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1627 /* clean global mtdids list */
1628 list_for_each_safe(entry, n, &mtdids) {
1629 id_tmp = list_entry(entry, struct mtdids, link);
1630 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1635 INIT_LIST_HEAD(&mtdids);
1637 while(p && (*p != '\0')) {
1640 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1641 if (mtd_id_parse(p, &p, &type, &num) != 0)
1645 printf("mtdids: incorrect <dev-num>\n");
1650 /* check if requested device exists */
1651 if (mtd_device_validate(type, num, &size) != 0)
1654 /* locate <mtd-id> */
1656 if ((p = strchr(mtd_id, ',')) != NULL) {
1657 mtd_id_len = p - mtd_id + 1;
1660 mtd_id_len = strlen(mtd_id) + 1;
1662 if (mtd_id_len == 0) {
1663 printf("mtdids: no <mtd-id> identifier\n");
1667 /* check if this id is already on the list */
1668 int double_entry = 0;
1669 list_for_each(entry, &mtdids) {
1670 id_tmp = list_entry(entry, struct mtdids, link);
1671 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1677 printf("device id %s%d redefined, please correct mtdids variable\n",
1678 MTD_DEV_TYPE(type), num);
1682 /* allocate mtdids structure */
1683 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1684 printf("out of memory\n");
1687 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1691 id->mtd_id = (char *)(id + 1);
1692 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1693 id->mtd_id[mtd_id_len - 1] = '\0';
1694 INIT_LIST_HEAD(&id->link);
1696 debug("+ id %s%d\t%16lld bytes\t%s\n",
1697 MTD_DEV_TYPE(id->type), id->num,
1698 id->size, id->mtd_id);
1700 list_add_tail(&id->link, &mtdids);
1704 /* clean mtdids list and free allocated memory */
1705 list_for_each_safe(entry, n, &mtdids) {
1706 id_tmp = list_entry(entry, struct mtdids, link);
1718 * Parse and initialize global mtdids mapping and create global
1719 * device/partition list.
1721 * @return 0 on success, 1 otherwise
1723 int mtdparts_init(void)
1725 static int initialized = 0;
1726 const char *ids, *parts;
1727 const char *current_partition;
1729 char tmp_ep[PARTITION_MAXLEN + 1];
1730 char tmp_parts[MTDPARTS_MAXLEN];
1732 debug("\n---mtdparts_init---\n");
1734 INIT_LIST_HEAD(&mtdids);
1735 INIT_LIST_HEAD(&devices);
1736 memset(last_ids, 0, sizeof(last_ids));
1737 memset(last_parts, 0, sizeof(last_parts));
1738 memset(last_partition, 0, sizeof(last_partition));
1739 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1740 board_mtdparts_default(&mtdids_default, &mtdparts_default);
1747 ids = env_get("mtdids");
1748 parts = env_get_mtdparts(tmp_parts);
1749 current_partition = env_get("partition");
1751 /* save it for later parsing, cannot rely on current partition pointer
1752 * as 'partition' variable may be updated during init */
1753 memset(tmp_parts, 0, sizeof(tmp_parts));
1754 memset(tmp_ep, 0, sizeof(tmp_ep));
1755 if (current_partition)
1756 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1758 debug("last_ids : %s\n", last_ids);
1759 debug("env_ids : %s\n", ids);
1760 debug("last_parts: %s\n", last_parts);
1761 debug("env_parts : %s\n\n", parts);
1763 debug("last_partition : %s\n", last_partition);
1764 debug("env_partition : %s\n", current_partition);
1766 /* if mtdids variable is empty try to use defaults */
1768 if (mtdids_default) {
1769 debug("mtdids variable not defined, using default\n");
1770 ids = mtdids_default;
1771 env_set("mtdids", (char *)ids);
1773 printf("mtdids not defined, no default present\n");
1777 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1778 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1782 /* use defaults when mtdparts variable is not defined
1783 * once mtdparts is saved environment, drop use_defaults flag */
1785 if (mtdparts_default && use_defaults) {
1786 parts = mtdparts_default;
1787 if (env_set("mtdparts", (char *)parts) == 0)
1790 printf("mtdparts variable not set, see 'help mtdparts'\n");
1793 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1794 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1798 /* check if we have already parsed those mtdids */
1799 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1804 if (parse_mtdids(ids) != 0) {
1809 /* ok it's good, save new ids */
1810 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1813 /* parse partitions if either mtdparts or mtdids were updated */
1814 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1815 if (parse_mtdparts(parts) != 0)
1818 if (list_empty(&devices)) {
1819 printf("mtdparts_init: no valid partitions\n");
1823 /* ok it's good, save new parts */
1824 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1826 /* reset first partition from first dev from the list as current */
1827 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1828 current_mtd_partnum = 0;
1831 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1832 MTD_DEV_TYPE(current_mtd_dev->id->type),
1833 current_mtd_dev->id->num, current_mtd_partnum);
1836 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1837 if (!parts && (last_parts[0] != '\0'))
1838 return mtd_devices_init();
1840 /* do not process current partition if mtdparts variable is null */
1844 /* is current partition set in environment? if so, use it */
1845 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1846 struct part_info *p;
1847 struct mtd_device *cdev;
1850 debug("--- getting current partition: %s\n", tmp_ep);
1852 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1853 current_mtd_dev = cdev;
1854 current_mtd_partnum = pnum;
1857 } else if (env_get("partition") == NULL) {
1858 debug("no partition variable set, setting...\n");
1866 * Return pointer to the partition of a requested number from a requested
1869 * @param dev device that is to be searched for a partition
1870 * @param part_num requested partition number
1871 * @return pointer to the part_info, NULL otherwise
1873 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1875 struct list_head *entry;
1876 struct part_info *part;
1882 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1883 part_num, MTD_DEV_TYPE(dev->id->type),
1884 dev->id->num, dev->id->mtd_id);
1886 if (part_num >= dev->num_parts) {
1887 printf("invalid partition number %d for device %s%d (%s)\n",
1888 part_num, MTD_DEV_TYPE(dev->id->type),
1889 dev->id->num, dev->id->mtd_id);
1893 /* locate partition number, return it */
1895 list_for_each(entry, &dev->parts) {
1896 part = list_entry(entry, struct part_info, link);
1898 if (part_num == num++) {
1906 /***************************************************/
1907 /* U-Boot commands */
1908 /***************************************************/
1909 /* command line only */
1911 * Routine implementing u-boot chpart command. Sets new current partition based
1912 * on the user supplied partition id. For partition id format see find_dev_and_part().
1914 * @param cmdtp command internal data
1915 * @param flag command flag
1916 * @param argc number of arguments supplied to the command
1917 * @param argv arguments list
1918 * @return 0 on success, 1 otherwise
1920 static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1922 /* command line only */
1923 struct mtd_device *dev;
1924 struct part_info *part;
1927 if (mtdparts_init() !=0)
1931 printf("no partition id specified\n");
1935 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1938 current_mtd_dev = dev;
1939 current_mtd_partnum = pnum;
1942 printf("partition changed to %s%d,%d\n",
1943 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1949 * Routine implementing u-boot mtdparts command. Initialize/update default global
1950 * partition list and process user partition request (list, add, del).
1952 * @param cmdtp command internal data
1953 * @param flag command flag
1954 * @param argc number of arguments supplied to the command
1955 * @param argv arguments list
1956 * @return 0 on success, 1 otherwise
1958 static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1959 char * const argv[])
1962 if (strcmp(argv[1], "default") == 0) {
1963 env_set("mtdids", NULL);
1964 env_set("mtdparts", NULL);
1965 env_set("partition", NULL);
1970 } else if (strcmp(argv[1], "delall") == 0) {
1971 /* this may be the first run, initialize lists if needed */
1974 env_set("mtdparts", NULL);
1976 /* mtd_devices_init() calls current_save() */
1977 return mtd_devices_init();
1981 /* make sure we are in sync with env variables */
1982 if (mtdparts_init() != 0)
1990 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1991 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1992 #define PART_ADD_DESC_MAXLEN 64
1993 char tmpbuf[PART_ADD_DESC_MAXLEN];
1994 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1995 struct mtd_info *mtd;
1996 uint64_t next_offset;
1999 struct mtd_device *dev;
2000 struct mtd_device *dev_tmp;
2002 struct part_info *p;
2004 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
2007 if ((id = id_find(type, num)) == NULL) {
2008 printf("no such device %s defined in mtdids variable\n", argv[2]);
2012 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
2013 len += strlen(argv[3]); /* size@offset */
2014 len += strlen(argv[4]) + 2; /* '(' name ')' */
2015 if (argv[5] && (strlen(argv[5]) == 2))
2016 len += 2; /* 'ro' */
2018 if (len >= PART_ADD_DESC_MAXLEN) {
2019 printf("too long partition description\n");
2022 sprintf(tmpbuf, "%s:%s(%s)%s",
2023 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
2024 debug("add tmpbuf: %s\n", tmpbuf);
2026 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2029 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
2030 dev->id->num, dev->id->mtd_id);
2032 p = list_entry(dev->parts.next, struct part_info, link);
2034 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2035 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2038 if (!strcmp(&argv[1][3], ".spread")) {
2039 spread_partition(mtd, p, &next_offset);
2040 debug("increased %s to %llu bytes\n", p->name, p->size);
2044 dev_tmp = device_find(dev->id->type, dev->id->num);
2045 if (dev_tmp == NULL) {
2047 } else if (part_add(dev_tmp, p) != 0) {
2048 /* merge new partition with existing ones*/
2053 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2054 printf("generated mtdparts too long, resetting to null\n");
2061 /* mtdparts del part-id */
2062 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2063 debug("del: part-id = %s\n", argv[2]);
2065 return delete_partition(argv[2]);
2068 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2069 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2070 return spread_partitions();
2071 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2073 return CMD_RET_USAGE;
2076 /***************************************************/
2078 chpart, 2, 0, do_chpart,
2079 "change active partition",
2081 " - change active partition (e.g. part-id = nand0,1)"
2084 #ifdef CONFIG_SYS_LONGHELP
2085 static char mtdparts_help_text[] =
2087 " - list partition table\n"
2089 " - delete all partitions\n"
2090 "mtdparts del part-id\n"
2091 " - delete partition (e.g. part-id = nand0,1)\n"
2092 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2093 " - add partition\n"
2094 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2095 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2096 " - add partition, padding size by skipping bad blocks\n"
2098 "mtdparts default\n"
2099 " - reset partition table to defaults\n"
2100 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2102 " - adjust the sizes of the partitions so they are\n"
2103 " at least as big as the mtdparts variable specifies\n"
2104 " and they each start on a good block\n\n"
2107 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2109 "this command uses three environment variables:\n\n"
2110 "'partition' - keeps current partition identifier\n\n"
2111 "partition := <part-id>\n"
2112 "<part-id> := <dev-id>,part_num\n\n"
2113 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2114 "mtdids=<idmap>[,<idmap>,...]\n\n"
2115 "<idmap> := <dev-id>=<mtd-id>\n"
2116 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2117 "<dev-num> := mtd device number, 0...\n"
2118 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2119 "'mtdparts' - partition list\n\n"
2120 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2121 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2122 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2123 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2124 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2125 "<offset> := partition start offset within the device\n"
2126 "<name> := '(' NAME ')'\n"
2127 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2131 mtdparts, 6, 0, do_mtdparts,
2132 "define flash/nand partitions", mtdparts_help_text
2134 /***************************************************/