1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
10 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
13 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
15 * Added support for reading flash partition table from environment.
16 * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
20 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
22 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
23 * Copyright 2002 SYSGO Real-Time Solutions GmbH
27 * Three environment variables are used by the parsing routines:
29 * 'partition' - keeps current partition identifier
31 * partition := <part-id>
32 * <part-id> := <dev-id>,part_num
35 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
37 * mtdids=<idmap>[,<idmap>,...]
39 * <idmap> := <dev-id>=<mtd-id>
40 * <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>
41 * <dev-num> := mtd device number, 0...
42 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
45 * 'mtdparts' - partition list
47 * mtdparts=[mtdparts=]<mtd-def>[;<mtd-def>...]
49 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
50 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
51 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
52 * <size> := standard linux memsize OR '-' to denote all remaining space
53 * <offset> := partition start offset within the device
54 * <name> := '(' NAME ')'
55 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
58 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
59 * - if the above variables are not set defaults for a given target are used
63 * 1 NOR Flash, with 1 single writable partition:
64 * mtdids=nor0=edb7312-nor
65 * mtdparts=[mtdparts=]edb7312-nor:-
67 * 1 NOR Flash with 2 partitions, 1 NAND with one
68 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
69 * mtdparts=[mtdparts=]edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
78 #include <jffs2/load_kernel.h>
79 #include <linux/list.h>
80 #include <linux/ctype.h>
81 #include <linux/err.h>
82 #include <linux/mtd/mtd.h>
84 #if defined(CONFIG_CMD_NAND)
85 #include <linux/mtd/rawnand.h>
89 #if defined(CONFIG_CMD_ONENAND)
90 #include <linux/mtd/onenand.h>
91 #include <onenand_uboot.h>
94 DECLARE_GLOBAL_DATA_PTR;
96 /* special size referring to all the remaining space in a partition */
97 #define SIZE_REMAINING (~0llu)
99 /* special offset value, it is used when not provided by user
101 * this value is used temporarily during parsing, later such offests
102 * are recalculated */
103 #define OFFSET_NOT_SPECIFIED (~0llu)
105 /* minimum partition size */
106 #define MIN_PART_SIZE 4096
108 /* this flag needs to be set in part_info struct mask_flags
109 * field for read-only partitions */
110 #define MTD_WRITEABLE_CMD 1
112 /* default values for mtdids and mtdparts variables */
113 #if !defined(MTDIDS_DEFAULT)
114 #ifdef CONFIG_MTDIDS_DEFAULT
115 #define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
117 #define MTDIDS_DEFAULT NULL
120 #if !defined(MTDPARTS_DEFAULT)
121 #ifdef CONFIG_MTDPARTS_DEFAULT
122 #define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
124 #define MTDPARTS_DEFAULT NULL
127 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
128 extern void board_mtdparts_default(const char **mtdids, const char **mtdparts);
130 static const char *mtdids_default = MTDIDS_DEFAULT;
131 static const char *mtdparts_default = MTDPARTS_DEFAULT;
133 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
134 #define MTDIDS_MAXLEN 128
135 #define MTDPARTS_MAXLEN 512
136 #define PARTITION_MAXLEN 16
137 static char last_ids[MTDIDS_MAXLEN + 1];
138 static char last_parts[MTDPARTS_MAXLEN + 1];
139 static char last_partition[PARTITION_MAXLEN + 1];
141 /* low level jffs2 cache cleaning routine */
142 extern void jffs2_free_cache(struct part_info *part);
144 /* mtdids mapping list, filled by parse_ids() */
145 static struct list_head mtdids;
147 /* device/partition list, parse_cmdline() parses into here */
148 static struct list_head devices;
150 /* current active device and partition number */
151 struct mtd_device *current_mtd_dev = NULL;
152 u8 current_mtd_partnum = 0;
156 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
158 /* command line only routines */
159 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
160 static int device_del(struct mtd_device *dev);
163 * Parses a string into a number. The number stored at ptr is
164 * potentially suffixed with K (for kilobytes, or 1024 bytes),
165 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
166 * 1073741824). If the number is suffixed with K, M, or G, then
167 * the return value is the number multiplied by one kilobyte, one
168 * megabyte, or one gigabyte, respectively.
170 * @param ptr where parse begins
171 * @param retptr output pointer to next char after parse completes (output)
172 * @return resulting unsigned int
174 static u64 memsize_parse (const char *const ptr, const char **retptr)
176 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
200 * Format string describing supplied size. This routine does the opposite job
201 * to memsize_parse(). Size in bytes is converted to string and if possible
202 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
204 * Note, that this routine does not check for buffer overflow, it's the caller
205 * who must assure enough space.
207 * @param buf output buffer
208 * @param size size to be converted to string
210 static void memsize_format(char *buf, u64 size)
212 #define SIZE_GB ((u32)1024*1024*1024)
213 #define SIZE_MB ((u32)1024*1024)
214 #define SIZE_KB ((u32)1024)
216 if ((size % SIZE_GB) == 0)
217 sprintf(buf, "%llug", size/SIZE_GB);
218 else if ((size % SIZE_MB) == 0)
219 sprintf(buf, "%llum", size/SIZE_MB);
220 else if (size % SIZE_KB == 0)
221 sprintf(buf, "%lluk", size/SIZE_KB);
223 sprintf(buf, "%llu", size);
227 * This routine does global indexing of all partitions. Resulting index for
228 * current partition is saved in 'mtddevnum'. Current partition name in
231 static void index_partitions(void)
234 struct part_info *part;
235 struct list_head *dentry;
236 struct mtd_device *dev;
238 debug("--- index partitions ---\n");
240 if (current_mtd_dev) {
242 list_for_each(dentry, &devices) {
243 dev = list_entry(dentry, struct mtd_device, link);
244 if (dev == current_mtd_dev) {
245 mtddevnum += current_mtd_partnum;
246 env_set_ulong("mtddevnum", mtddevnum);
247 debug("=> mtddevnum %d,\n", mtddevnum);
250 mtddevnum += dev->num_parts;
253 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
255 env_set("mtddevname", part->name);
257 debug("=> mtddevname %s\n", part->name);
259 env_set("mtddevname", NULL);
261 debug("=> mtddevname NULL\n");
264 env_set("mtddevnum", NULL);
265 env_set("mtddevname", NULL);
267 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
272 * Save current device and partition in environment variable 'partition'.
274 static void current_save(void)
278 debug("--- current_save ---\n");
280 if (current_mtd_dev) {
281 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
282 current_mtd_dev->id->num, current_mtd_partnum);
284 env_set("partition", buf);
285 strncpy(last_partition, buf, 16);
287 debug("=> partition %s\n", buf);
289 env_set("partition", NULL);
290 last_partition[0] = '\0';
292 debug("=> partition NULL\n");
299 * Produce a mtd_info given a type and num.
301 * @param type mtd type
302 * @param num mtd number
303 * @param mtd a pointer to an mtd_info instance (output)
304 * @return 0 if device is valid, 1 otherwise
306 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
310 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
311 *mtd = get_mtd_device_nm(mtd_dev);
313 printf("Device %s not found!\n", mtd_dev);
316 put_mtd_device(*mtd);
322 * Performs sanity check for supplied flash partition.
323 * Table of existing MTD flash devices is searched and partition device
324 * is located. Alignment with the granularity of nand erasesize is verified.
326 * @param id of the parent device
327 * @param part partition to validate
328 * @return 0 if partition is valid, 1 otherwise
330 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
332 struct mtd_info *mtd = NULL;
337 if (get_mtd_info(id->type, id->num, &mtd))
340 part->sector_size = mtd->erasesize;
342 if (!mtd->numeraseregions) {
344 * Only one eraseregion (NAND, SPI-NAND, OneNAND or uniform NOR),
345 * checking for alignment is easy here
347 offset = part->offset;
348 if (do_div(offset, mtd->erasesize)) {
349 printf("%s%d: partition (%s) start offset"
350 "alignment incorrect\n",
351 MTD_DEV_TYPE(id->type), id->num, part->name);
356 if (do_div(size, mtd->erasesize)) {
357 printf("%s%d: partition (%s) size alignment incorrect\n",
358 MTD_DEV_TYPE(id->type), id->num, part->name);
363 * Multiple eraseregions (non-uniform NOR),
364 * checking for alignment is more complex here
367 /* Check start alignment */
368 for (i = 0; i < mtd->numeraseregions; i++) {
369 start = mtd->eraseregions[i].offset;
370 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
371 if (part->offset == start)
373 start += mtd->eraseregions[i].erasesize;
377 printf("%s%d: partition (%s) start offset alignment incorrect\n",
378 MTD_DEV_TYPE(id->type), id->num, part->name);
383 /* Check end/size alignment */
384 for (i = 0; i < mtd->numeraseregions; i++) {
385 start = mtd->eraseregions[i].offset;
386 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
387 if ((part->offset + part->size) == start)
389 start += mtd->eraseregions[i].erasesize;
392 /* Check last sector alignment */
393 if ((part->offset + part->size) == start)
396 printf("%s%d: partition (%s) size alignment incorrect\n",
397 MTD_DEV_TYPE(id->type), id->num, part->name);
409 * Performs sanity check for supplied partition. Offset and size are
410 * verified to be within valid range. Partition type is checked and
411 * part_validate_eraseblock() is called with the argument of part.
413 * @param id of the parent device
414 * @param part partition to validate
415 * @return 0 if partition is valid, 1 otherwise
417 static int part_validate(struct mtdids *id, struct part_info *part)
419 if (part->size == SIZE_REMAINING)
420 part->size = id->size - part->offset;
422 if (part->offset > id->size) {
423 printf("%s: offset %08llx beyond flash size %08llx\n",
424 id->mtd_id, part->offset, id->size);
428 if ((part->offset + part->size) <= part->offset) {
429 printf("%s%d: partition (%s) size too big\n",
430 MTD_DEV_TYPE(id->type), id->num, part->name);
434 if (part->offset + part->size > id->size) {
435 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
440 * Now we need to check if the partition starts and ends on
441 * sector (eraseblock) regions
443 return part_validate_eraseblock(id, part);
447 * Delete selected partition from the partition list of the specified device.
449 * @param dev device to delete partition from
450 * @param part partition to delete
451 * @return 0 on success, 1 otherwise
453 static int part_del(struct mtd_device *dev, struct part_info *part)
455 u8 current_save_needed = 0;
457 /* if there is only one partition, remove whole device */
458 if (dev->num_parts == 1)
459 return device_del(dev);
461 /* otherwise just delete this partition */
463 if (dev == current_mtd_dev) {
464 /* we are modyfing partitions for the current device,
466 struct part_info *curr_pi;
467 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
470 if (curr_pi == part) {
471 printf("current partition deleted, resetting current to 0\n");
472 current_mtd_partnum = 0;
473 } else if (part->offset <= curr_pi->offset) {
474 current_mtd_partnum--;
476 current_save_needed = 1;
480 list_del(&part->link);
484 if (current_save_needed > 0)
493 * Delete all partitions from parts head list, free memory.
495 * @param head list of partitions to delete
497 static void part_delall(struct list_head *head)
499 struct list_head *entry, *n;
500 struct part_info *part_tmp;
502 /* clean tmp_list and free allocated memory */
503 list_for_each_safe(entry, n, head) {
504 part_tmp = list_entry(entry, struct part_info, link);
512 * Add new partition to the supplied partition list. Make sure partitions are
513 * sorted by offset in ascending order.
515 * @param head list this partition is to be added to
516 * @param new partition to be added
518 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
520 struct list_head *entry;
521 struct part_info *new_pi, *curr_pi;
523 /* link partition to parrent dev */
526 if (list_empty(&dev->parts)) {
527 debug("part_sort_add: list empty\n");
528 list_add(&part->link, &dev->parts);
534 new_pi = list_entry(&part->link, struct part_info, link);
536 /* get current partition info if we are updating current device */
538 if (dev == current_mtd_dev)
539 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
541 list_for_each(entry, &dev->parts) {
542 struct part_info *pi;
544 pi = list_entry(entry, struct part_info, link);
546 /* be compliant with kernel cmdline, allow only one partition at offset zero */
547 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
548 printf("cannot add second partition at offset 0\n");
552 if (new_pi->offset <= pi->offset) {
553 list_add_tail(&part->link, entry);
556 if (curr_pi && (pi->offset <= curr_pi->offset)) {
557 /* we are modyfing partitions for the current
558 * device, update current */
559 current_mtd_partnum++;
568 list_add_tail(&part->link, &dev->parts);
575 * Add provided partition to the partition list of a given device.
577 * @param dev device to which partition is added
578 * @param part partition to be added
579 * @return 0 on success, 1 otherwise
581 static int part_add(struct mtd_device *dev, struct part_info *part)
583 /* verify alignment and size */
584 if (part_validate(dev->id, part) != 0)
587 /* partition is ok, add it to the list */
588 if (part_sort_add(dev, part) != 0)
595 * Parse one partition definition, allocate memory and return pointer to this
596 * location in retpart.
598 * @param partdef pointer to the partition definition string i.e. <part-def>
599 * @param ret output pointer to next char after parse completes (output)
600 * @param retpart pointer to the allocated partition (output)
601 * @return 0 on success, 1 otherwise
603 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
605 struct part_info *part;
610 unsigned int mask_flags;
617 /* fetch the partition size */
619 /* assign all remaining space to this partition */
620 debug("'-': remaining size assigned\n");
621 size = SIZE_REMAINING;
624 size = memsize_parse(p, &p);
625 if (size < MIN_PART_SIZE) {
626 printf("partition size too small (%llx)\n", size);
631 /* check for offset */
632 offset = OFFSET_NOT_SPECIFIED;
635 offset = memsize_parse(p, &p);
638 /* now look for the name */
641 if ((p = strchr(name, ')')) == NULL) {
642 printf("no closing ) found in partition name\n");
645 name_len = p - name + 1;
646 if ((name_len - 1) == 0) {
647 printf("empty partition name\n");
652 /* 0x00000000@0x00000000 */
657 /* test for options */
659 if (strncmp(p, "ro", 2) == 0) {
660 mask_flags |= MTD_WRITEABLE_CMD;
664 /* check for next partition definition */
666 if (size == SIZE_REMAINING) {
668 printf("no partitions allowed after a fill-up partition\n");
672 } else if ((*p == ';') || (*p == '\0')) {
675 printf("unexpected character '%c' at the end of partition\n", *p);
680 /* allocate memory */
681 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
683 printf("out of memory\n");
686 memset(part, 0, sizeof(struct part_info) + name_len);
688 part->offset = offset;
689 part->mask_flags = mask_flags;
690 part->name = (char *)(part + 1);
693 /* copy user provided name */
694 strncpy(part->name, name, name_len - 1);
697 /* auto generated name in form of size@offset */
698 snprintf(part->name, name_len, "0x%08llx@0x%08llx", size, offset);
702 part->name[name_len - 1] = '\0';
703 INIT_LIST_HEAD(&part->link);
705 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
706 part->name, part->size,
707 part->offset, part->mask_flags);
714 * Check device number to be within valid range for given device type.
716 * @param type mtd type
717 * @param num mtd number
718 * @param size a pointer to the size of the mtd device (output)
719 * @return 0 if device is valid, 1 otherwise
721 static int mtd_device_validate(u8 type, u8 num, u64 *size)
723 struct mtd_info *mtd = NULL;
725 if (get_mtd_info(type, num, &mtd))
734 * Delete all mtd devices from a supplied devices list, free memory allocated for
735 * each device and delete all device partitions.
737 * @return 0 on success, 1 otherwise
739 static int device_delall(struct list_head *head)
741 struct list_head *entry, *n;
742 struct mtd_device *dev_tmp;
744 /* clean devices list */
745 list_for_each_safe(entry, n, head) {
746 dev_tmp = list_entry(entry, struct mtd_device, link);
748 part_delall(&dev_tmp->parts);
751 INIT_LIST_HEAD(&devices);
757 * If provided device exists it's partitions are deleted, device is removed
758 * from device list and device memory is freed.
760 * @param dev device to be deleted
761 * @return 0 on success, 1 otherwise
763 static int device_del(struct mtd_device *dev)
765 part_delall(&dev->parts);
766 list_del(&dev->link);
769 if (dev == current_mtd_dev) {
770 /* we just deleted current device */
771 if (list_empty(&devices)) {
772 current_mtd_dev = NULL;
774 /* reset first partition from first dev from the
775 * devices list as current */
776 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
777 current_mtd_partnum = 0;
788 * Search global device list and return pointer to the device of type and num
791 * @param type device type
792 * @param num device number
793 * @return NULL if requested device does not exist
795 struct mtd_device *device_find(u8 type, u8 num)
797 struct list_head *entry;
798 struct mtd_device *dev_tmp;
800 list_for_each(entry, &devices) {
801 dev_tmp = list_entry(entry, struct mtd_device, link);
803 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
811 * Add specified device to the global device list.
813 * @param dev device to be added
815 static void device_add(struct mtd_device *dev)
817 u8 current_save_needed = 0;
819 if (list_empty(&devices)) {
820 current_mtd_dev = dev;
821 current_mtd_partnum = 0;
822 current_save_needed = 1;
825 list_add_tail(&dev->link, &devices);
827 if (current_save_needed > 0)
834 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
835 * return pointer to the device structure.
837 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
838 * @param ret output pointer to next char after parse completes (output)
839 * @param retdev pointer to the allocated device (output)
840 * @return 0 on success, 1 otherwise
842 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
844 struct mtd_device *dev;
845 struct part_info *part;
848 unsigned int mtd_id_len;
852 struct list_head *entry, *n;
857 debug("===device_parse===\n");
866 mtd_id = p = mtd_dev;
867 if (!(p = strchr(mtd_id, ':'))) {
868 printf("no <mtd-id> identifier\n");
871 mtd_id_len = p - mtd_id + 1;
874 /* verify if we have a valid device specified */
875 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
876 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
880 pend = strchr(p, ';');
881 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
882 id->type, MTD_DEV_TYPE(id->type),
883 id->num, id->mtd_id);
884 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
886 /* parse partitions */
890 if ((dev = device_find(id->type, id->num)) != NULL) {
891 /* if device already exists start at the end of the last partition */
892 part = list_entry(dev->parts.prev, struct part_info, link);
893 offset = part->offset + part->size;
896 while (p && (*p != '\0') && (*p != ';')) {
898 if ((part_parse(p, &p, &part) != 0) || (!part))
901 /* calculate offset when not specified */
902 if (part->offset == OFFSET_NOT_SPECIFIED)
903 part->offset = offset;
905 offset = part->offset;
907 /* verify alignment and size */
908 if (part_validate(id, part) != 0)
911 offset += part->size;
913 /* partition is ok, add it to the list */
914 list_add_tail(&part->link, &tmp_list);
919 part_delall(&tmp_list);
923 debug("\ntotal partitions: %d\n", num_parts);
925 /* check for next device presence */
930 } else if (*p == '\0') {
934 printf("unexpected character '%c' at the end of device\n", *p);
941 /* allocate memory for mtd_device structure */
942 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
943 printf("out of memory\n");
946 memset(dev, 0, sizeof(struct mtd_device));
948 dev->num_parts = 0; /* part_sort_add increments num_parts */
949 INIT_LIST_HEAD(&dev->parts);
950 INIT_LIST_HEAD(&dev->link);
952 /* move partitions from tmp_list to dev->parts */
953 list_for_each_safe(entry, n, &tmp_list) {
954 part = list_entry(entry, struct part_info, link);
956 if (part_sort_add(dev, part) != 0) {
969 * Initialize global device list.
971 * @return 0 on success, 1 otherwise
973 static int mtd_devices_init(void)
975 last_parts[0] = '\0';
976 current_mtd_dev = NULL;
979 return device_delall(&devices);
983 * Search global mtdids list and find id of requested type and number.
985 * @return pointer to the id if it exists, NULL otherwise
987 static struct mtdids* id_find(u8 type, u8 num)
989 struct list_head *entry;
992 list_for_each(entry, &mtdids) {
993 id = list_entry(entry, struct mtdids, link);
995 if ((id->type == type) && (id->num == num))
1003 * Search global mtdids list and find id of a requested mtd_id.
1005 * Note: first argument is not null terminated.
1007 * @param mtd_id string containing requested mtd_id
1008 * @param mtd_id_len length of supplied mtd_id
1009 * @return pointer to the id if it exists, NULL otherwise
1011 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1013 struct list_head *entry;
1016 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1017 mtd_id_len, mtd_id, mtd_id_len);
1019 list_for_each(entry, &mtdids) {
1020 id = list_entry(entry, struct mtdids, link);
1022 debug("entry: '%s' (len = %zu)\n",
1023 id->mtd_id, strlen(id->mtd_id));
1025 if (mtd_id_len != strlen(id->mtd_id))
1027 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1035 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>,
1036 * return device type and number.
1038 * @param id string describing device id
1039 * @param ret_id output pointer to next char after parse completes (output)
1040 * @param dev_type parsed device type (output)
1041 * @param dev_num parsed device number (output)
1042 * @return 0 on success, 1 otherwise
1044 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1050 if (strncmp(p, "nand", 4) == 0) {
1051 *dev_type = MTD_DEV_TYPE_NAND;
1053 } else if (strncmp(p, "nor", 3) == 0) {
1054 *dev_type = MTD_DEV_TYPE_NOR;
1056 } else if (strncmp(p, "onenand", 7) == 0) {
1057 *dev_type = MTD_DEV_TYPE_ONENAND;
1059 } else if (strncmp(p, "spi-nand", 8) == 0) {
1060 *dev_type = MTD_DEV_TYPE_SPINAND;
1063 printf("incorrect device type in %s\n", id);
1068 printf("incorrect device number in %s\n", id);
1072 *dev_num = simple_strtoul(p, (char **)&p, 0);
1079 * Process all devices and generate corresponding mtdparts string describing
1080 * all partitions on all devices.
1082 * @param buf output buffer holding generated mtdparts string (output)
1083 * @param buflen buffer size
1084 * @return 0 on success, 1 otherwise
1086 static int generate_mtdparts(char *buf, u32 buflen)
1088 struct list_head *pentry, *dentry;
1089 struct mtd_device *dev;
1090 struct part_info *part, *prev_part;
1095 u32 maxlen = buflen - 1;
1097 debug("--- generate_mtdparts ---\n");
1099 if (list_empty(&devices)) {
1104 list_for_each(dentry, &devices) {
1105 dev = list_entry(dentry, struct mtd_device, link);
1108 len = strlen(dev->id->mtd_id) + 1;
1111 memcpy(p, dev->id->mtd_id, len - 1);
1116 /* format partitions */
1119 list_for_each(pentry, &dev->parts) {
1120 part = list_entry(pentry, struct part_info, link);
1122 offset = part->offset;
1125 /* partition size */
1126 memsize_format(tmpbuf, size);
1127 len = strlen(tmpbuf);
1130 memcpy(p, tmpbuf, len);
1135 /* add offset only when there is a gap between
1137 if ((!prev_part && (offset != 0)) ||
1138 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1140 memsize_format(tmpbuf, offset);
1141 len = strlen(tmpbuf) + 1;
1145 memcpy(p, tmpbuf, len - 1);
1150 /* copy name only if user supplied */
1151 if(!part->auto_name) {
1152 len = strlen(part->name) + 2;
1157 memcpy(p, part->name, len - 2);
1164 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1173 /* print ',' separator if there are other partitions
1175 if (dev->num_parts > part_cnt) {
1183 /* print ';' separator if there are other devices following */
1184 if (dentry->next != &devices) {
1192 /* we still have at least one char left, as we decremented maxlen at
1199 last_parts[0] = '\0';
1204 * Call generate_mtdparts to process all devices and generate corresponding
1205 * mtdparts string, save it in mtdparts environment variable.
1207 * @param buf output buffer holding generated mtdparts string (output)
1208 * @param buflen buffer size
1209 * @return 0 on success, 1 otherwise
1211 static int generate_mtdparts_save(char *buf, u32 buflen)
1215 ret = generate_mtdparts(buf, buflen);
1217 if ((buf[0] != '\0') && (ret == 0))
1218 env_set("mtdparts", buf);
1220 env_set("mtdparts", NULL);
1225 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1227 * Get the net size (w/o bad blocks) of the given partition.
1229 * @param mtd the mtd info
1230 * @param part the partition
1231 * @return the calculated net size of this partition
1233 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1235 uint64_t i, net_size = 0;
1237 if (!mtd->_block_isbad)
1240 for (i = 0; i < part->size; i += mtd->erasesize) {
1241 if (!mtd->_block_isbad(mtd, part->offset + i))
1242 net_size += mtd->erasesize;
1249 static void print_partition_table(void)
1251 struct list_head *dentry, *pentry;
1252 struct part_info *part;
1253 struct mtd_device *dev;
1256 list_for_each(dentry, &devices) {
1257 dev = list_entry(dentry, struct mtd_device, link);
1258 /* list partitions for given device */
1260 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1261 struct mtd_info *mtd;
1263 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1266 printf("\ndevice %s%d <%s>, # parts = %d\n",
1267 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1268 dev->id->mtd_id, dev->num_parts);
1269 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1271 list_for_each(pentry, &dev->parts) {
1275 part = list_entry(pentry, struct part_info, link);
1276 net_size = net_part_size(mtd, part);
1277 size_note = part->size == net_size ? " " : " (!)";
1278 printf("%2d: %-20s0x%08llx\t0x%08x%s\t0x%08llx\t%d\n",
1279 part_num, part->name, part->size,
1280 net_size, size_note, part->offset,
1282 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1283 printf("\ndevice %s%d <%s>, # parts = %d\n",
1284 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1285 dev->id->mtd_id, dev->num_parts);
1286 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1288 list_for_each(pentry, &dev->parts) {
1289 part = list_entry(pentry, struct part_info, link);
1290 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1291 part_num, part->name, part->size,
1292 part->offset, part->mask_flags);
1293 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1298 if (list_empty(&devices))
1299 printf("no partitions defined\n");
1303 * Format and print out a partition list for each device from global device
1306 static void list_partitions(void)
1308 struct part_info *part;
1310 debug("\n---list_partitions---\n");
1311 print_partition_table();
1313 /* current_mtd_dev is not NULL only when we have non empty device list */
1314 if (current_mtd_dev) {
1315 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1317 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1318 MTD_DEV_TYPE(current_mtd_dev->id->type),
1319 current_mtd_dev->id->num, current_mtd_partnum,
1320 part->name, part->size, part->offset);
1322 printf("could not get current partition info\n\n");
1326 printf("\ndefaults:\n");
1327 printf("mtdids : %s\n",
1328 mtdids_default ? mtdids_default : "none");
1330 * Using printf() here results in printbuffer overflow
1331 * if default mtdparts string is greater than console
1332 * printbuffer. Use puts() to prevent system crashes.
1335 puts(mtdparts_default ? mtdparts_default : "none");
1340 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1341 * corresponding device and verify partition number.
1343 * @param id string describing device and partition or partition name
1344 * @param dev pointer to the requested device (output)
1345 * @param part_num verified partition number (output)
1346 * @param part pointer to requested partition (output)
1347 * @return 0 on success, 1 otherwise
1349 int find_dev_and_part(const char *id, struct mtd_device **dev,
1350 u8 *part_num, struct part_info **part)
1352 struct list_head *dentry, *pentry;
1353 u8 type, dnum, pnum;
1356 debug("--- find_dev_and_part ---\nid = %s\n", id);
1358 list_for_each(dentry, &devices) {
1360 *dev = list_entry(dentry, struct mtd_device, link);
1361 list_for_each(pentry, &(*dev)->parts) {
1362 *part = list_entry(pentry, struct part_info, link);
1363 if (strcmp((*part)->name, id) == 0)
1374 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1377 if ((*p++ != ',') || (*p == '\0')) {
1378 printf("no partition number specified\n");
1381 pnum = simple_strtoul(p, (char **)&p, 0);
1383 printf("unexpected trailing character '%c'\n", *p);
1387 if ((*dev = device_find(type, dnum)) == NULL) {
1388 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1392 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1393 printf("no such partition\n");
1404 * Find and delete partition. For partition id format see find_dev_and_part().
1406 * @param id string describing device and partition
1407 * @return 0 on success, 1 otherwise
1409 static int delete_partition(const char *id)
1412 struct mtd_device *dev;
1413 struct part_info *part;
1415 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1417 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1418 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1419 part->name, part->size, part->offset);
1421 if (part_del(dev, part) != 0)
1424 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1425 printf("generated mtdparts too long, resetting to null\n");
1431 printf("partition %s not found\n", id);
1435 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1437 * Increase the size of the given partition so that it's net size is at least
1438 * as large as the size member and such that the next partition would start on a
1439 * good block if it were adjacent to this partition.
1441 * @param mtd the mtd device
1442 * @param part the partition
1443 * @param next_offset pointer to the offset of the next partition after this
1444 * partition's size has been modified (output)
1446 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1447 uint64_t *next_offset)
1449 uint64_t net_size, padding_size = 0;
1452 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1456 * Absorb bad blocks immediately following this
1457 * partition also into the partition, such that
1458 * the next partition starts with a good block.
1461 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1462 mtd->erasesize, &padding_size, &truncated);
1466 padding_size -= mtd->erasesize;
1470 printf("truncated partition %s to %lld bytes\n", part->name,
1471 (uint64_t) net_size + padding_size);
1474 part->size = net_size + padding_size;
1475 *next_offset = part->offset + part->size;
1479 * Adjust all of the partition sizes, such that all partitions are at least
1480 * as big as their mtdparts environment variable sizes and they each start
1483 * @return 0 on success, 1 otherwise
1485 static int spread_partitions(void)
1487 struct list_head *dentry, *pentry;
1488 struct mtd_device *dev;
1489 struct part_info *part;
1490 struct mtd_info *mtd;
1494 list_for_each(dentry, &devices) {
1495 dev = list_entry(dentry, struct mtd_device, link);
1497 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1502 list_for_each(pentry, &dev->parts) {
1503 part = list_entry(pentry, struct part_info, link);
1505 debug("spread_partitions: device = %s%d, partition %d ="
1506 " (%s) 0x%08llx@0x%08llx\n",
1507 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1508 part_num, part->name, part->size,
1511 if (cur_offs > part->offset)
1512 part->offset = cur_offs;
1514 spread_partition(mtd, part, &cur_offs);
1522 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1523 printf("generated mtdparts too long, resetting to null\n");
1528 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1531 * The mtdparts variable tends to be long. If we need to access it
1532 * before the env is relocated, then we need to use our own stack
1533 * buffer. gd->env_buf will be too small.
1535 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1536 * @return mtdparts variable string, NULL if not found
1538 static const char *env_get_mtdparts(char *buf)
1540 if (gd->flags & GD_FLG_ENV_READY)
1541 return env_get("mtdparts");
1542 if (env_get_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1)
1548 * Accept character string describing mtd partitions and call device_parse()
1549 * for each entry. Add created devices to the global devices list.
1551 * @param mtdparts string specifing mtd partitions
1552 * @return 0 on success, 1 otherwise
1554 static int parse_mtdparts(const char *const mtdparts)
1557 struct mtd_device *dev;
1559 char tmp_parts[MTDPARTS_MAXLEN];
1561 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts);
1563 /* delete all devices and partitions */
1564 if (mtd_devices_init() != 0) {
1565 printf("could not initialise device list\n");
1569 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1570 p = env_get_mtdparts(tmp_parts);
1574 /* Skip the useless prefix, if any */
1575 if (strncmp(p, "mtdparts=", 9) == 0)
1578 while (*p != '\0') {
1580 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1583 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1584 dev->id->num, dev->id->mtd_id);
1586 /* check if parsed device is already on the list */
1587 if (device_find(dev->id->type, dev->id->num) != NULL) {
1588 printf("device %s%d redefined, please correct mtdparts variable\n",
1589 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1593 list_add_tail(&dev->link, &devices);
1598 device_delall(&devices);
1605 * Parse provided string describing mtdids mapping (see file header for mtdids
1606 * variable format). Allocate memory for each entry and add all found entries
1607 * to the global mtdids list.
1609 * @param ids mapping string
1610 * @return 0 on success, 1 otherwise
1612 static int parse_mtdids(const char *const ids)
1614 const char *p = ids;
1618 struct list_head *entry, *n;
1619 struct mtdids *id_tmp;
1624 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1626 /* clean global mtdids list */
1627 list_for_each_safe(entry, n, &mtdids) {
1628 id_tmp = list_entry(entry, struct mtdids, link);
1629 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1634 INIT_LIST_HEAD(&mtdids);
1636 while(p && (*p != '\0')) {
1639 /* parse 'nor'|'nand'|'onenand'|'spi-nand'<dev-num> */
1640 if (mtd_id_parse(p, &p, &type, &num) != 0)
1644 printf("mtdids: incorrect <dev-num>\n");
1649 /* check if requested device exists */
1650 if (mtd_device_validate(type, num, &size) != 0)
1653 /* locate <mtd-id> */
1655 if ((p = strchr(mtd_id, ',')) != NULL) {
1656 mtd_id_len = p - mtd_id + 1;
1659 mtd_id_len = strlen(mtd_id) + 1;
1661 if (mtd_id_len == 0) {
1662 printf("mtdids: no <mtd-id> identifier\n");
1666 /* check if this id is already on the list */
1667 int double_entry = 0;
1668 list_for_each(entry, &mtdids) {
1669 id_tmp = list_entry(entry, struct mtdids, link);
1670 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1676 printf("device id %s%d redefined, please correct mtdids variable\n",
1677 MTD_DEV_TYPE(type), num);
1681 /* allocate mtdids structure */
1682 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1683 printf("out of memory\n");
1686 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1690 id->mtd_id = (char *)(id + 1);
1691 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1692 id->mtd_id[mtd_id_len - 1] = '\0';
1693 INIT_LIST_HEAD(&id->link);
1695 debug("+ id %s%d\t%16lld bytes\t%s\n",
1696 MTD_DEV_TYPE(id->type), id->num,
1697 id->size, id->mtd_id);
1699 list_add_tail(&id->link, &mtdids);
1703 /* clean mtdids list and free allocated memory */
1704 list_for_each_safe(entry, n, &mtdids) {
1705 id_tmp = list_entry(entry, struct mtdids, link);
1717 * Parse and initialize global mtdids mapping and create global
1718 * device/partition list.
1720 * @return 0 on success, 1 otherwise
1722 int mtdparts_init(void)
1724 static int initialized = 0;
1725 const char *ids, *parts;
1726 const char *current_partition;
1728 char tmp_ep[PARTITION_MAXLEN + 1];
1729 char tmp_parts[MTDPARTS_MAXLEN];
1731 debug("\n---mtdparts_init---\n");
1733 INIT_LIST_HEAD(&mtdids);
1734 INIT_LIST_HEAD(&devices);
1735 memset(last_ids, 0, sizeof(last_ids));
1736 memset(last_parts, 0, sizeof(last_parts));
1737 memset(last_partition, 0, sizeof(last_partition));
1738 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1739 board_mtdparts_default(&mtdids_default, &mtdparts_default);
1746 ids = env_get("mtdids");
1747 parts = env_get_mtdparts(tmp_parts);
1748 current_partition = env_get("partition");
1750 /* save it for later parsing, cannot rely on current partition pointer
1751 * as 'partition' variable may be updated during init */
1752 memset(tmp_parts, 0, sizeof(tmp_parts));
1753 memset(tmp_ep, 0, sizeof(tmp_ep));
1754 if (current_partition)
1755 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1757 debug("last_ids : %s\n", last_ids);
1758 debug("env_ids : %s\n", ids);
1759 debug("last_parts: %s\n", last_parts);
1760 debug("env_parts : %s\n\n", parts);
1762 debug("last_partition : %s\n", last_partition);
1763 debug("env_partition : %s\n", current_partition);
1765 /* if mtdids variable is empty try to use defaults */
1767 if (mtdids_default) {
1768 debug("mtdids variable not defined, using default\n");
1769 ids = mtdids_default;
1770 env_set("mtdids", (char *)ids);
1772 printf("mtdids not defined, no default present\n");
1776 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1777 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1781 /* use defaults when mtdparts variable is not defined
1782 * once mtdparts is saved environment, drop use_defaults flag */
1784 if (mtdparts_default && use_defaults) {
1785 parts = mtdparts_default;
1786 if (env_set("mtdparts", (char *)parts) == 0)
1789 printf("mtdparts variable not set, see 'help mtdparts'\n");
1792 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1793 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1797 /* check if we have already parsed those mtdids */
1798 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1803 if (parse_mtdids(ids) != 0) {
1808 /* ok it's good, save new ids */
1809 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1812 /* parse partitions if either mtdparts or mtdids were updated */
1813 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1814 if (parse_mtdparts(parts) != 0)
1817 if (list_empty(&devices)) {
1818 printf("mtdparts_init: no valid partitions\n");
1822 /* ok it's good, save new parts */
1823 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1825 /* reset first partition from first dev from the list as current */
1826 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1827 current_mtd_partnum = 0;
1830 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1831 MTD_DEV_TYPE(current_mtd_dev->id->type),
1832 current_mtd_dev->id->num, current_mtd_partnum);
1835 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1836 if (!parts && (last_parts[0] != '\0'))
1837 return mtd_devices_init();
1839 /* do not process current partition if mtdparts variable is null */
1843 /* is current partition set in environment? if so, use it */
1844 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1845 struct part_info *p;
1846 struct mtd_device *cdev;
1849 debug("--- getting current partition: %s\n", tmp_ep);
1851 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1852 current_mtd_dev = cdev;
1853 current_mtd_partnum = pnum;
1856 } else if (env_get("partition") == NULL) {
1857 debug("no partition variable set, setting...\n");
1865 * Return pointer to the partition of a requested number from a requested
1868 * @param dev device that is to be searched for a partition
1869 * @param part_num requested partition number
1870 * @return pointer to the part_info, NULL otherwise
1872 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1874 struct list_head *entry;
1875 struct part_info *part;
1881 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1882 part_num, MTD_DEV_TYPE(dev->id->type),
1883 dev->id->num, dev->id->mtd_id);
1885 if (part_num >= dev->num_parts) {
1886 printf("invalid partition number %d for device %s%d (%s)\n",
1887 part_num, MTD_DEV_TYPE(dev->id->type),
1888 dev->id->num, dev->id->mtd_id);
1892 /* locate partition number, return it */
1894 list_for_each(entry, &dev->parts) {
1895 part = list_entry(entry, struct part_info, link);
1897 if (part_num == num++) {
1905 /***************************************************/
1906 /* U-Boot commands */
1907 /***************************************************/
1908 /* command line only */
1910 * Routine implementing u-boot chpart command. Sets new current partition based
1911 * on the user supplied partition id. For partition id format see find_dev_and_part().
1913 * @param cmdtp command internal data
1914 * @param flag command flag
1915 * @param argc number of arguments supplied to the command
1916 * @param argv arguments list
1917 * @return 0 on success, 1 otherwise
1919 static int do_chpart(struct cmd_tbl *cmdtp, int flag, int argc,
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(struct cmd_tbl *cmdtp, int flag, int argc,
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'|'spi-nand'<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 /***************************************************/