1 // SPDX-License-Identifier: GPL-2.0+
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
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)
77 #include <asm/global_data.h>
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 #ifdef CONFIG_MTDIDS_DEFAULT
114 #define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
116 #define MTDIDS_DEFAULT NULL
118 #ifdef CONFIG_MTDPARTS_DEFAULT
119 #define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
121 #define MTDPARTS_DEFAULT NULL
124 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
125 extern void board_mtdparts_default(const char **mtdids, const char **mtdparts);
127 static const char *mtdids_default = MTDIDS_DEFAULT;
128 static const char *mtdparts_default = MTDPARTS_DEFAULT;
130 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
131 #define MTDIDS_MAXLEN 128
132 #define MTDPARTS_MAXLEN 512
133 #define PARTITION_MAXLEN 16
134 static char last_ids[MTDIDS_MAXLEN + 1];
135 static char last_parts[MTDPARTS_MAXLEN + 1];
136 static char last_partition[PARTITION_MAXLEN + 1];
138 /* low level jffs2 cache cleaning routine */
139 extern void jffs2_free_cache(struct part_info *part);
141 /* mtdids mapping list, filled by parse_ids() */
142 static struct list_head mtdids;
144 /* device/partition list, parse_cmdline() parses into here */
145 static struct list_head devices;
147 /* current active device and partition number */
148 struct mtd_device *current_mtd_dev = NULL;
149 u8 current_mtd_partnum = 0;
153 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
155 /* command line only routines */
156 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
157 static int device_del(struct mtd_device *dev);
160 * Parses a string into a number. The number stored at ptr is
161 * potentially suffixed with K (for kilobytes, or 1024 bytes),
162 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
163 * 1073741824). If the number is suffixed with K, M, or G, then
164 * the return value is the number multiplied by one kilobyte, one
165 * megabyte, or one gigabyte, respectively.
167 * @param ptr where parse begins
168 * @param retptr output pointer to next char after parse completes (output)
169 * Return: resulting unsigned int
171 static u64 memsize_parse (const char *const ptr, const char **retptr)
173 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
197 * Format string describing supplied size. This routine does the opposite job
198 * to memsize_parse(). Size in bytes is converted to string and if possible
199 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
201 * Note, that this routine does not check for buffer overflow, it's the caller
202 * who must assure enough space.
204 * @param buf output buffer
205 * @param size size to be converted to string
207 static void memsize_format(char *buf, u64 size)
209 #define SIZE_GB ((u32)1024*1024*1024)
210 #define SIZE_MB ((u32)1024*1024)
211 #define SIZE_KB ((u32)1024)
213 if ((size % SIZE_GB) == 0)
214 sprintf(buf, "%llug", size/SIZE_GB);
215 else if ((size % SIZE_MB) == 0)
216 sprintf(buf, "%llum", size/SIZE_MB);
217 else if (size % SIZE_KB == 0)
218 sprintf(buf, "%lluk", size/SIZE_KB);
220 sprintf(buf, "%llu", size);
224 * This routine does global indexing of all partitions. Resulting index for
225 * current partition is saved in 'mtddevnum'. Current partition name in
228 static void index_partitions(void)
231 struct part_info *part;
232 struct list_head *dentry;
233 struct mtd_device *dev;
235 debug("--- index partitions ---\n");
237 if (current_mtd_dev) {
239 list_for_each(dentry, &devices) {
240 dev = list_entry(dentry, struct mtd_device, link);
241 if (dev == current_mtd_dev) {
242 mtddevnum += current_mtd_partnum;
243 env_set_ulong("mtddevnum", mtddevnum);
244 debug("=> mtddevnum %d,\n", mtddevnum);
247 mtddevnum += dev->num_parts;
250 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
252 env_set("mtddevname", part->name);
254 debug("=> mtddevname %s\n", part->name);
256 env_set("mtddevname", NULL);
258 debug("=> mtddevname NULL\n");
261 env_set("mtddevnum", NULL);
262 env_set("mtddevname", NULL);
264 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
269 * Save current device and partition in environment variable 'partition'.
271 static void current_save(void)
275 debug("--- current_save ---\n");
277 if (current_mtd_dev) {
278 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
279 current_mtd_dev->id->num, current_mtd_partnum);
281 env_set("partition", buf);
282 strncpy(last_partition, buf, 16);
284 debug("=> partition %s\n", buf);
286 env_set("partition", NULL);
287 last_partition[0] = '\0';
289 debug("=> partition NULL\n");
296 * Produce a mtd_info given a type and num.
298 * @param type mtd type
299 * @param num mtd number
300 * @param mtd a pointer to an mtd_info instance (output)
301 * Return: 0 if device is valid, 1 otherwise
303 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
307 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
308 *mtd = get_mtd_device_nm(mtd_dev);
310 printf("Device %s not found!\n", mtd_dev);
313 put_mtd_device(*mtd);
319 * Performs sanity check for supplied flash partition.
320 * Table of existing MTD flash devices is searched and partition device
321 * is located. Alignment with the granularity of nand erasesize is verified.
323 * @param id of the parent device
324 * @param part partition to validate
325 * Return: 0 if partition is valid, 1 otherwise
327 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
329 struct mtd_info *mtd = NULL;
334 if (get_mtd_info(id->type, id->num, &mtd))
337 part->sector_size = mtd->erasesize;
339 if (!mtd->numeraseregions) {
341 * Only one eraseregion (NAND, SPI-NAND, OneNAND or uniform NOR),
342 * checking for alignment is easy here
344 offset = part->offset;
345 if (do_div(offset, mtd->erasesize)) {
346 printf("%s%d: partition (%s) start offset"
347 "alignment incorrect\n",
348 MTD_DEV_TYPE(id->type), id->num, part->name);
353 if (do_div(size, mtd->erasesize)) {
354 printf("%s%d: partition (%s) size alignment incorrect\n",
355 MTD_DEV_TYPE(id->type), id->num, part->name);
360 * Multiple eraseregions (non-uniform NOR),
361 * checking for alignment is more complex here
364 /* Check start alignment */
365 for (i = 0; i < mtd->numeraseregions; i++) {
366 start = mtd->eraseregions[i].offset;
367 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
368 if (part->offset == start)
370 start += mtd->eraseregions[i].erasesize;
374 printf("%s%d: partition (%s) start offset alignment incorrect\n",
375 MTD_DEV_TYPE(id->type), id->num, part->name);
380 /* Check end/size alignment */
381 for (i = 0; i < mtd->numeraseregions; i++) {
382 start = mtd->eraseregions[i].offset;
383 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
384 if ((part->offset + part->size) == start)
386 start += mtd->eraseregions[i].erasesize;
389 /* Check last sector alignment */
390 if ((part->offset + part->size) == start)
393 printf("%s%d: partition (%s) size alignment incorrect\n",
394 MTD_DEV_TYPE(id->type), id->num, part->name);
406 * Performs sanity check for supplied partition. Offset and size are
407 * verified to be within valid range. Partition type is checked and
408 * part_validate_eraseblock() is called with the argument of part.
410 * @param id of the parent device
411 * @param part partition to validate
412 * Return: 0 if partition is valid, 1 otherwise
414 static int part_validate(struct mtdids *id, struct part_info *part)
416 if (part->size == SIZE_REMAINING)
417 part->size = id->size - part->offset;
419 if (part->offset > id->size) {
420 printf("%s: offset %08llx beyond flash size %08llx\n",
421 id->mtd_id, part->offset, id->size);
425 if ((part->offset + part->size) <= part->offset) {
426 printf("%s%d: partition (%s) size too big\n",
427 MTD_DEV_TYPE(id->type), id->num, part->name);
431 if (part->offset + part->size > id->size) {
432 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
437 * Now we need to check if the partition starts and ends on
438 * sector (eraseblock) regions
440 return part_validate_eraseblock(id, part);
444 * Delete selected partition from the partition list of the specified device.
446 * @param dev device to delete partition from
447 * @param part partition to delete
448 * Return: 0 on success, 1 otherwise
450 static int part_del(struct mtd_device *dev, struct part_info *part)
452 u8 current_save_needed = 0;
454 /* if there is only one partition, remove whole device */
455 if (dev->num_parts == 1)
456 return device_del(dev);
458 /* otherwise just delete this partition */
460 if (dev == current_mtd_dev) {
461 /* we are modyfing partitions for the current device,
463 struct part_info *curr_pi;
464 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
467 if (curr_pi == part) {
468 printf("current partition deleted, resetting current to 0\n");
469 current_mtd_partnum = 0;
470 } else if (part->offset <= curr_pi->offset) {
471 current_mtd_partnum--;
473 current_save_needed = 1;
477 list_del(&part->link);
481 if (current_save_needed > 0)
490 * Delete all partitions from parts head list, free memory.
492 * @param head list of partitions to delete
494 static void part_delall(struct list_head *head)
496 struct list_head *entry, *n;
497 struct part_info *part_tmp;
499 /* clean tmp_list and free allocated memory */
500 list_for_each_safe(entry, n, head) {
501 part_tmp = list_entry(entry, struct part_info, link);
509 * Add new partition to the supplied partition list. Make sure partitions are
510 * sorted by offset in ascending order.
512 * @param head list this partition is to be added to
513 * @param new partition to be added
515 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
517 struct list_head *entry;
518 struct part_info *new_pi, *curr_pi;
520 /* link partition to parrent dev */
523 if (list_empty(&dev->parts)) {
524 debug("part_sort_add: list empty\n");
525 list_add(&part->link, &dev->parts);
531 new_pi = list_entry(&part->link, struct part_info, link);
533 /* get current partition info if we are updating current device */
535 if (dev == current_mtd_dev)
536 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
538 list_for_each(entry, &dev->parts) {
539 struct part_info *pi;
541 pi = list_entry(entry, struct part_info, link);
543 /* be compliant with kernel cmdline, allow only one partition at offset zero */
544 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
545 printf("cannot add second partition at offset 0\n");
549 if (new_pi->offset <= pi->offset) {
550 list_add_tail(&part->link, entry);
553 if (curr_pi && (pi->offset <= curr_pi->offset)) {
554 /* we are modyfing partitions for the current
555 * device, update current */
556 current_mtd_partnum++;
565 list_add_tail(&part->link, &dev->parts);
572 * Add provided partition to the partition list of a given device.
574 * @param dev device to which partition is added
575 * @param part partition to be added
576 * Return: 0 on success, 1 otherwise
578 static int part_add(struct mtd_device *dev, struct part_info *part)
580 /* verify alignment and size */
581 if (part_validate(dev->id, part) != 0)
584 /* partition is ok, add it to the list */
585 if (part_sort_add(dev, part) != 0)
592 * Parse one partition definition, allocate memory and return pointer to this
593 * location in retpart.
595 * @param partdef pointer to the partition definition string i.e. <part-def>
596 * @param ret output pointer to next char after parse completes (output)
597 * @param retpart pointer to the allocated partition (output)
598 * Return: 0 on success, 1 otherwise
600 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
602 struct part_info *part;
607 unsigned int mask_flags;
614 /* fetch the partition size */
616 /* assign all remaining space to this partition */
617 debug("'-': remaining size assigned\n");
618 size = SIZE_REMAINING;
621 size = memsize_parse(p, &p);
622 if (size < MIN_PART_SIZE) {
623 printf("partition size too small (%llx)\n", size);
628 /* check for offset */
629 offset = OFFSET_NOT_SPECIFIED;
632 offset = memsize_parse(p, &p);
635 /* now look for the name */
638 if ((p = strchr(name, ')')) == NULL) {
639 printf("no closing ) found in partition name\n");
642 name_len = p - name + 1;
643 if ((name_len - 1) == 0) {
644 printf("empty partition name\n");
649 /* 0x00000000@0x00000000 */
654 /* test for options */
656 if (strncmp(p, "ro", 2) == 0) {
657 mask_flags |= MTD_WRITEABLE_CMD;
661 /* check for next partition definition */
663 if (size == SIZE_REMAINING) {
665 printf("no partitions allowed after a fill-up partition\n");
669 } else if ((*p == ';') || (*p == '\0')) {
672 printf("unexpected character '%c' at the end of partition\n", *p);
677 /* allocate memory */
678 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
680 printf("out of memory\n");
683 memset(part, 0, sizeof(struct part_info) + name_len);
685 part->offset = offset;
686 part->mask_flags = mask_flags;
687 part->name = (char *)(part + 1);
690 /* copy user provided name */
691 strncpy(part->name, name, name_len - 1);
694 /* auto generated name in form of size@offset */
695 snprintf(part->name, name_len, "0x%08llx@0x%08llx", size, offset);
699 part->name[name_len - 1] = '\0';
700 INIT_LIST_HEAD(&part->link);
702 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
703 part->name, part->size,
704 part->offset, part->mask_flags);
711 * Check device number to be within valid range for given device type.
713 * @param type mtd type
714 * @param num mtd number
715 * @param size a pointer to the size of the mtd device (output)
716 * Return: 0 if device is valid, 1 otherwise
718 static int mtd_device_validate(u8 type, u8 num, u64 *size)
720 struct mtd_info *mtd = NULL;
722 if (get_mtd_info(type, num, &mtd))
731 * Delete all mtd devices from a supplied devices list, free memory allocated for
732 * each device and delete all device partitions.
734 * Return: 0 on success, 1 otherwise
736 static int device_delall(struct list_head *head)
738 struct list_head *entry, *n;
739 struct mtd_device *dev_tmp;
741 /* clean devices list */
742 list_for_each_safe(entry, n, head) {
743 dev_tmp = list_entry(entry, struct mtd_device, link);
745 part_delall(&dev_tmp->parts);
748 INIT_LIST_HEAD(&devices);
754 * If provided device exists it's partitions are deleted, device is removed
755 * from device list and device memory is freed.
757 * @param dev device to be deleted
758 * Return: 0 on success, 1 otherwise
760 static int device_del(struct mtd_device *dev)
762 part_delall(&dev->parts);
763 list_del(&dev->link);
766 if (dev == current_mtd_dev) {
767 /* we just deleted current device */
768 if (list_empty(&devices)) {
769 current_mtd_dev = NULL;
771 /* reset first partition from first dev from the
772 * devices list as current */
773 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
774 current_mtd_partnum = 0;
785 * Search global device list and return pointer to the device of type and num
788 * @param type device type
789 * @param num device number
790 * Return: NULL if requested device does not exist
792 struct mtd_device *device_find(u8 type, u8 num)
794 struct list_head *entry;
795 struct mtd_device *dev_tmp;
797 list_for_each(entry, &devices) {
798 dev_tmp = list_entry(entry, struct mtd_device, link);
800 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
808 * Add specified device to the global device list.
810 * @param dev device to be added
812 static void device_add(struct mtd_device *dev)
814 u8 current_save_needed = 0;
816 if (list_empty(&devices)) {
817 current_mtd_dev = dev;
818 current_mtd_partnum = 0;
819 current_save_needed = 1;
822 list_add_tail(&dev->link, &devices);
824 if (current_save_needed > 0)
831 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
832 * return pointer to the device structure.
834 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
835 * @param ret output pointer to next char after parse completes (output)
836 * @param retdev pointer to the allocated device (output)
837 * Return: 0 on success, 1 otherwise
839 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
841 struct mtd_device *dev;
842 struct part_info *part;
845 unsigned int mtd_id_len;
849 struct list_head *entry, *n;
854 debug("===device_parse===\n");
863 mtd_id = p = mtd_dev;
864 if (!(p = strchr(mtd_id, ':'))) {
865 printf("no <mtd-id> identifier\n");
868 mtd_id_len = p - mtd_id + 1;
871 /* verify if we have a valid device specified */
872 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
873 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
877 pend = strchr(p, ';');
878 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
879 id->type, MTD_DEV_TYPE(id->type),
880 id->num, id->mtd_id);
881 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
883 /* parse partitions */
887 if ((dev = device_find(id->type, id->num)) != NULL) {
888 /* if device already exists start at the end of the last partition */
889 part = list_entry(dev->parts.prev, struct part_info, link);
890 offset = part->offset + part->size;
893 while (p && (*p != '\0') && (*p != ';')) {
895 if ((part_parse(p, &p, &part) != 0) || (!part))
898 /* calculate offset when not specified */
899 if (part->offset == OFFSET_NOT_SPECIFIED)
900 part->offset = offset;
902 offset = part->offset;
904 /* verify alignment and size */
905 if (part_validate(id, part) != 0)
908 offset += part->size;
910 /* partition is ok, add it to the list */
911 list_add_tail(&part->link, &tmp_list);
916 part_delall(&tmp_list);
920 debug("\ntotal partitions: %d\n", num_parts);
922 /* check for next device presence */
927 } else if (*p == '\0') {
931 printf("unexpected character '%c' at the end of device\n", *p);
938 /* allocate memory for mtd_device structure */
939 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
940 printf("out of memory\n");
943 memset(dev, 0, sizeof(struct mtd_device));
945 dev->num_parts = 0; /* part_sort_add increments num_parts */
946 INIT_LIST_HEAD(&dev->parts);
947 INIT_LIST_HEAD(&dev->link);
949 /* move partitions from tmp_list to dev->parts */
950 list_for_each_safe(entry, n, &tmp_list) {
951 part = list_entry(entry, struct part_info, link);
953 if (part_sort_add(dev, part) != 0) {
966 * Initialize global device list.
968 * Return: 0 on success, 1 otherwise
970 static int mtd_devices_init(void)
972 last_parts[0] = '\0';
973 current_mtd_dev = NULL;
976 return device_delall(&devices);
980 * Search global mtdids list and find id of requested type and number.
982 * Return: pointer to the id if it exists, NULL otherwise
984 static struct mtdids* id_find(u8 type, u8 num)
986 struct list_head *entry;
989 list_for_each(entry, &mtdids) {
990 id = list_entry(entry, struct mtdids, link);
992 if ((id->type == type) && (id->num == num))
1000 * Search global mtdids list and find id of a requested mtd_id.
1002 * Note: first argument is not null terminated.
1004 * @param mtd_id string containing requested mtd_id
1005 * @param mtd_id_len length of supplied mtd_id
1006 * Return: pointer to the id if it exists, NULL otherwise
1008 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1010 struct list_head *entry;
1013 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1014 mtd_id_len, mtd_id, mtd_id_len);
1016 list_for_each(entry, &mtdids) {
1017 id = list_entry(entry, struct mtdids, link);
1019 debug("entry: '%s' (len = %zu)\n",
1020 id->mtd_id, strlen(id->mtd_id));
1022 if (mtd_id_len != strlen(id->mtd_id))
1024 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1032 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>,
1033 * return device type and number.
1035 * @param id string describing device id
1036 * @param ret_id output pointer to next char after parse completes (output)
1037 * @param dev_type parsed device type (output)
1038 * @param dev_num parsed device number (output)
1039 * Return: 0 on success, 1 otherwise
1041 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1047 if (strncmp(p, "nand", 4) == 0) {
1048 *dev_type = MTD_DEV_TYPE_NAND;
1050 } else if (strncmp(p, "nor", 3) == 0) {
1051 *dev_type = MTD_DEV_TYPE_NOR;
1053 } else if (strncmp(p, "onenand", 7) == 0) {
1054 *dev_type = MTD_DEV_TYPE_ONENAND;
1056 } else if (strncmp(p, "spi-nand", 8) == 0) {
1057 *dev_type = MTD_DEV_TYPE_SPINAND;
1060 printf("incorrect device type in %s\n", id);
1065 printf("incorrect device number in %s\n", id);
1069 *dev_num = simple_strtoul(p, (char **)&p, 0);
1076 * Process all devices and generate corresponding mtdparts string describing
1077 * all partitions on all devices.
1079 * @param buf output buffer holding generated mtdparts string (output)
1080 * @param buflen buffer size
1081 * Return: 0 on success, 1 otherwise
1083 static int generate_mtdparts(char *buf, u32 buflen)
1085 struct list_head *pentry, *dentry;
1086 struct mtd_device *dev;
1087 struct part_info *part, *prev_part;
1092 u32 maxlen = buflen - 1;
1094 debug("--- generate_mtdparts ---\n");
1096 if (list_empty(&devices)) {
1101 list_for_each(dentry, &devices) {
1102 dev = list_entry(dentry, struct mtd_device, link);
1105 len = strlen(dev->id->mtd_id) + 1;
1108 memcpy(p, dev->id->mtd_id, len - 1);
1113 /* format partitions */
1116 list_for_each(pentry, &dev->parts) {
1117 part = list_entry(pentry, struct part_info, link);
1119 offset = part->offset;
1122 /* partition size */
1123 memsize_format(tmpbuf, size);
1124 len = strlen(tmpbuf);
1127 memcpy(p, tmpbuf, len);
1132 /* add offset only when there is a gap between
1134 if ((!prev_part && (offset != 0)) ||
1135 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1137 memsize_format(tmpbuf, offset);
1138 len = strlen(tmpbuf) + 1;
1142 memcpy(p, tmpbuf, len - 1);
1147 /* copy name only if user supplied */
1148 if(!part->auto_name) {
1149 len = strlen(part->name) + 2;
1154 memcpy(p, part->name, len - 2);
1161 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1170 /* print ',' separator if there are other partitions
1172 if (dev->num_parts > part_cnt) {
1180 /* print ';' separator if there are other devices following */
1181 if (dentry->next != &devices) {
1189 /* we still have at least one char left, as we decremented maxlen at
1196 last_parts[0] = '\0';
1201 * Call generate_mtdparts to process all devices and generate corresponding
1202 * mtdparts string, save it in mtdparts environment variable.
1204 * @param buf output buffer holding generated mtdparts string (output)
1205 * @param buflen buffer size
1206 * Return: 0 on success, 1 otherwise
1208 static int generate_mtdparts_save(char *buf, u32 buflen)
1212 ret = generate_mtdparts(buf, buflen);
1214 if ((buf[0] != '\0') && (ret == 0))
1215 env_set("mtdparts", buf);
1217 env_set("mtdparts", NULL);
1222 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1224 * Get the net size (w/o bad blocks) of the given partition.
1226 * @param mtd the mtd info
1227 * @param part the partition
1228 * Return: the calculated net size of this partition
1230 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1232 uint64_t i, net_size = 0;
1234 if (!mtd->_block_isbad)
1237 for (i = 0; i < part->size; i += mtd->erasesize) {
1238 if (!mtd->_block_isbad(mtd, part->offset + i))
1239 net_size += mtd->erasesize;
1246 static void print_partition_table(void)
1248 struct list_head *dentry, *pentry;
1249 struct part_info *part;
1250 struct mtd_device *dev;
1253 list_for_each(dentry, &devices) {
1254 dev = list_entry(dentry, struct mtd_device, link);
1255 /* list partitions for given device */
1257 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1258 struct mtd_info *mtd;
1260 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1263 printf("\ndevice %s%d <%s>, # parts = %d\n",
1264 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1265 dev->id->mtd_id, dev->num_parts);
1266 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1268 list_for_each(pentry, &dev->parts) {
1272 part = list_entry(pentry, struct part_info, link);
1273 net_size = net_part_size(mtd, part);
1274 size_note = part->size == net_size ? " " : " (!)";
1275 printf("%2d: %-20s0x%08llx\t0x%08x%s\t0x%08llx\t%d\n",
1276 part_num, part->name, part->size,
1277 net_size, size_note, part->offset,
1279 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1280 printf("\ndevice %s%d <%s>, # parts = %d\n",
1281 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1282 dev->id->mtd_id, dev->num_parts);
1283 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1285 list_for_each(pentry, &dev->parts) {
1286 part = list_entry(pentry, struct part_info, link);
1287 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1288 part_num, part->name, part->size,
1289 part->offset, part->mask_flags);
1290 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1295 if (list_empty(&devices))
1296 printf("no partitions defined\n");
1300 * Format and print out a partition list for each device from global device
1303 static void list_partitions(void)
1305 struct part_info *part;
1307 debug("\n---list_partitions---\n");
1308 print_partition_table();
1310 /* current_mtd_dev is not NULL only when we have non empty device list */
1311 if (current_mtd_dev) {
1312 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1314 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1315 MTD_DEV_TYPE(current_mtd_dev->id->type),
1316 current_mtd_dev->id->num, current_mtd_partnum,
1317 part->name, part->size, part->offset);
1319 printf("could not get current partition info\n\n");
1323 printf("\ndefaults:\n");
1324 printf("mtdids : %s\n",
1325 mtdids_default ? mtdids_default : "none");
1327 * Using printf() here results in printbuffer overflow
1328 * if default mtdparts string is greater than console
1329 * printbuffer. Use puts() to prevent system crashes.
1332 puts(mtdparts_default ? mtdparts_default : "none");
1337 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1338 * corresponding device and verify partition number.
1340 * @param id string describing device and partition or partition name
1341 * @param dev pointer to the requested device (output)
1342 * @param part_num verified partition number (output)
1343 * @param part pointer to requested partition (output)
1344 * Return: 0 on success, 1 otherwise
1346 int find_dev_and_part(const char *id, struct mtd_device **dev,
1347 u8 *part_num, struct part_info **part)
1349 struct list_head *dentry, *pentry;
1350 u8 type, dnum, pnum;
1353 debug("--- find_dev_and_part ---\nid = %s\n", id);
1355 list_for_each(dentry, &devices) {
1357 *dev = list_entry(dentry, struct mtd_device, link);
1358 list_for_each(pentry, &(*dev)->parts) {
1359 *part = list_entry(pentry, struct part_info, link);
1360 if (strcmp((*part)->name, id) == 0)
1371 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1374 if ((*p++ != ',') || (*p == '\0')) {
1375 printf("no partition number specified\n");
1378 pnum = simple_strtoul(p, (char **)&p, 0);
1380 printf("unexpected trailing character '%c'\n", *p);
1384 if ((*dev = device_find(type, dnum)) == NULL) {
1385 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1389 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1390 printf("no such partition\n");
1401 * Find and delete partition. For partition id format see find_dev_and_part().
1403 * @param id string describing device and partition
1404 * Return: 0 on success, 1 otherwise
1406 static int delete_partition(const char *id)
1409 struct mtd_device *dev;
1410 struct part_info *part;
1412 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1414 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1415 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1416 part->name, part->size, part->offset);
1418 if (part_del(dev, part) != 0)
1421 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1422 printf("generated mtdparts too long, resetting to null\n");
1428 printf("partition %s not found\n", id);
1432 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1434 * Increase the size of the given partition so that it's net size is at least
1435 * as large as the size member and such that the next partition would start on a
1436 * good block if it were adjacent to this partition.
1438 * @param mtd the mtd device
1439 * @param part the partition
1440 * @param next_offset pointer to the offset of the next partition after this
1441 * partition's size has been modified (output)
1443 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1444 uint64_t *next_offset)
1446 uint64_t net_size, padding_size = 0;
1449 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1453 * Absorb bad blocks immediately following this
1454 * partition also into the partition, such that
1455 * the next partition starts with a good block.
1458 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1459 mtd->erasesize, &padding_size, &truncated);
1463 padding_size -= mtd->erasesize;
1467 printf("truncated partition %s to %lld bytes\n", part->name,
1468 (uint64_t) net_size + padding_size);
1471 part->size = net_size + padding_size;
1472 *next_offset = part->offset + part->size;
1476 * Adjust all of the partition sizes, such that all partitions are at least
1477 * as big as their mtdparts environment variable sizes and they each start
1480 * Return: 0 on success, 1 otherwise
1482 static int spread_partitions(void)
1484 struct list_head *dentry, *pentry;
1485 struct mtd_device *dev;
1486 struct part_info *part;
1487 struct mtd_info *mtd;
1491 list_for_each(dentry, &devices) {
1492 dev = list_entry(dentry, struct mtd_device, link);
1494 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1499 list_for_each(pentry, &dev->parts) {
1500 part = list_entry(pentry, struct part_info, link);
1502 debug("spread_partitions: device = %s%d, partition %d ="
1503 " (%s) 0x%08llx@0x%08llx\n",
1504 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1505 part_num, part->name, part->size,
1508 if (cur_offs > part->offset)
1509 part->offset = cur_offs;
1511 spread_partition(mtd, part, &cur_offs);
1519 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1520 printf("generated mtdparts too long, resetting to null\n");
1525 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1528 * The mtdparts variable tends to be long. If we need to access it
1529 * before the env is relocated, then we need to use our own stack
1530 * buffer. gd->env_buf will be too small.
1532 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1533 * Return: mtdparts variable string, NULL if not found
1535 static const char *env_get_mtdparts(char *buf)
1537 if (gd->flags & GD_FLG_ENV_READY)
1538 return env_get("mtdparts");
1539 if (env_get_f("mtdparts", buf, MTDPARTS_MAXLEN) != -1)
1545 * Accept character string describing mtd partitions and call device_parse()
1546 * for each entry. Add created devices to the global devices list.
1548 * @param mtdparts string specifing mtd partitions
1549 * Return: 0 on success, 1 otherwise
1551 static int parse_mtdparts(const char *const mtdparts)
1554 struct mtd_device *dev;
1556 char tmp_parts[MTDPARTS_MAXLEN];
1558 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts);
1560 /* delete all devices and partitions */
1561 if (mtd_devices_init() != 0) {
1562 printf("could not initialise device list\n");
1566 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1567 p = env_get_mtdparts(tmp_parts);
1571 /* Skip the useless prefix, if any */
1572 if (strncmp(p, "mtdparts=", 9) == 0)
1575 while (*p != '\0') {
1577 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1580 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1581 dev->id->num, dev->id->mtd_id);
1583 /* check if parsed device is already on the list */
1584 if (device_find(dev->id->type, dev->id->num) != NULL) {
1585 printf("device %s%d redefined, please correct mtdparts variable\n",
1586 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1590 list_add_tail(&dev->link, &devices);
1595 device_delall(&devices);
1602 * Parse provided string describing mtdids mapping (see file header for mtdids
1603 * variable format). Allocate memory for each entry and add all found entries
1604 * to the global mtdids list.
1606 * @param ids mapping string
1607 * Return: 0 on success, 1 otherwise
1609 static int parse_mtdids(const char *const ids)
1611 const char *p = ids;
1615 struct list_head *entry, *n;
1616 struct mtdids *id_tmp;
1621 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1623 /* clean global mtdids list */
1624 list_for_each_safe(entry, n, &mtdids) {
1625 id_tmp = list_entry(entry, struct mtdids, link);
1626 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1631 INIT_LIST_HEAD(&mtdids);
1633 while(p && (*p != '\0')) {
1636 /* parse 'nor'|'nand'|'onenand'|'spi-nand'<dev-num> */
1637 if (mtd_id_parse(p, &p, &type, &num) != 0)
1641 printf("mtdids: incorrect <dev-num>\n");
1646 /* check if requested device exists */
1647 if (mtd_device_validate(type, num, &size) != 0)
1650 /* locate <mtd-id> */
1652 if ((p = strchr(mtd_id, ',')) != NULL) {
1653 mtd_id_len = p - mtd_id + 1;
1656 mtd_id_len = strlen(mtd_id) + 1;
1658 if (mtd_id_len == 0) {
1659 printf("mtdids: no <mtd-id> identifier\n");
1663 /* check if this id is already on the list */
1664 int double_entry = 0;
1665 list_for_each(entry, &mtdids) {
1666 id_tmp = list_entry(entry, struct mtdids, link);
1667 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1673 printf("device id %s%d redefined, please correct mtdids variable\n",
1674 MTD_DEV_TYPE(type), num);
1678 /* allocate mtdids structure */
1679 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1680 printf("out of memory\n");
1683 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1687 id->mtd_id = (char *)(id + 1);
1688 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1689 id->mtd_id[mtd_id_len - 1] = '\0';
1690 INIT_LIST_HEAD(&id->link);
1692 debug("+ id %s%d\t%16lld bytes\t%s\n",
1693 MTD_DEV_TYPE(id->type), id->num,
1694 id->size, id->mtd_id);
1696 list_add_tail(&id->link, &mtdids);
1700 /* clean mtdids list and free allocated memory */
1701 list_for_each_safe(entry, n, &mtdids) {
1702 id_tmp = list_entry(entry, struct mtdids, link);
1714 * Parse and initialize global mtdids mapping and create global
1715 * device/partition list.
1717 * Return: 0 on success, 1 otherwise
1719 int mtdparts_init(void)
1721 static int initialized = 0;
1722 const char *ids, *parts;
1723 const char *current_partition;
1725 char tmp_ep[PARTITION_MAXLEN + 1];
1726 char tmp_parts[MTDPARTS_MAXLEN];
1728 debug("\n---mtdparts_init---\n");
1730 INIT_LIST_HEAD(&mtdids);
1731 INIT_LIST_HEAD(&devices);
1732 memset(last_ids, 0, sizeof(last_ids));
1733 memset(last_parts, 0, sizeof(last_parts));
1734 memset(last_partition, 0, sizeof(last_partition));
1735 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1736 board_mtdparts_default(&mtdids_default, &mtdparts_default);
1743 ids = env_get("mtdids");
1744 parts = env_get_mtdparts(tmp_parts);
1745 current_partition = env_get("partition");
1747 /* save it for later parsing, cannot rely on current partition pointer
1748 * as 'partition' variable may be updated during init */
1749 memset(tmp_parts, 0, sizeof(tmp_parts));
1750 memset(tmp_ep, 0, sizeof(tmp_ep));
1751 if (current_partition)
1752 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1754 debug("last_ids : %s\n", last_ids);
1755 debug("env_ids : %s\n", ids);
1756 debug("last_parts: %s\n", last_parts);
1757 debug("env_parts : %s\n\n", parts);
1759 debug("last_partition : %s\n", last_partition);
1760 debug("env_partition : %s\n", current_partition);
1762 /* if mtdids variable is empty try to use defaults */
1764 if (mtdids_default) {
1765 debug("mtdids variable not defined, using default\n");
1766 ids = mtdids_default;
1767 env_set("mtdids", (char *)ids);
1769 printf("mtdids not defined, no default present\n");
1773 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1774 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1778 /* use defaults when mtdparts variable is not defined
1779 * once mtdparts is saved environment, drop use_defaults flag */
1781 if (mtdparts_default && use_defaults) {
1782 parts = mtdparts_default;
1783 if (env_set("mtdparts", (char *)parts) == 0)
1786 printf("mtdparts variable not set, see 'help mtdparts'\n");
1789 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1790 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1794 /* check if we have already parsed those mtdids */
1795 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1800 if (parse_mtdids(ids) != 0) {
1805 /* ok it's good, save new ids */
1806 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1809 /* parse partitions if either mtdparts or mtdids were updated */
1810 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1811 if (parse_mtdparts(parts) != 0)
1814 if (list_empty(&devices)) {
1815 printf("mtdparts_init: no valid partitions\n");
1819 /* ok it's good, save new parts */
1820 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1822 /* reset first partition from first dev from the list as current */
1823 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1824 current_mtd_partnum = 0;
1827 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1828 MTD_DEV_TYPE(current_mtd_dev->id->type),
1829 current_mtd_dev->id->num, current_mtd_partnum);
1832 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1833 if (!parts && (last_parts[0] != '\0'))
1834 return mtd_devices_init();
1836 /* do not process current partition if mtdparts variable is null */
1840 /* is current partition set in environment? if so, use it */
1841 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1842 struct part_info *p;
1843 struct mtd_device *cdev;
1846 debug("--- getting current partition: %s\n", tmp_ep);
1848 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1849 current_mtd_dev = cdev;
1850 current_mtd_partnum = pnum;
1853 } else if (env_get("partition") == NULL) {
1854 debug("no partition variable set, setting...\n");
1862 * Return pointer to the partition of a requested number from a requested
1865 * @param dev device that is to be searched for a partition
1866 * @param part_num requested partition number
1867 * Return: pointer to the part_info, NULL otherwise
1869 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1871 struct list_head *entry;
1872 struct part_info *part;
1878 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1879 part_num, MTD_DEV_TYPE(dev->id->type),
1880 dev->id->num, dev->id->mtd_id);
1882 if (part_num >= dev->num_parts) {
1883 printf("invalid partition number %d for device %s%d (%s)\n",
1884 part_num, MTD_DEV_TYPE(dev->id->type),
1885 dev->id->num, dev->id->mtd_id);
1889 /* locate partition number, return it */
1891 list_for_each(entry, &dev->parts) {
1892 part = list_entry(entry, struct part_info, link);
1894 if (part_num == num++) {
1902 /***************************************************/
1903 /* U-Boot commands */
1904 /***************************************************/
1905 /* command line only */
1907 * Routine implementing u-boot chpart command. Sets new current partition based
1908 * on the user supplied partition id. For partition id format see find_dev_and_part().
1910 * @param cmdtp command internal data
1911 * @param flag command flag
1912 * @param argc number of arguments supplied to the command
1913 * @param argv arguments list
1914 * Return: 0 on success, 1 otherwise
1916 static int do_chpart(struct cmd_tbl *cmdtp, int flag, int argc,
1919 /* command line only */
1920 struct mtd_device *dev;
1921 struct part_info *part;
1924 if (mtdparts_init() !=0)
1928 printf("no partition id specified\n");
1932 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1935 current_mtd_dev = dev;
1936 current_mtd_partnum = pnum;
1939 printf("partition changed to %s%d,%d\n",
1940 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1946 * Routine implementing u-boot mtdparts command. Initialize/update default global
1947 * partition list and process user partition request (list, add, del).
1949 * @param cmdtp command internal data
1950 * @param flag command flag
1951 * @param argc number of arguments supplied to the command
1952 * @param argv arguments list
1953 * Return: 0 on success, 1 otherwise
1955 static int do_mtdparts(struct cmd_tbl *cmdtp, int flag, int argc,
1959 if (strcmp(argv[1], "default") == 0) {
1960 env_set("mtdids", NULL);
1961 env_set("mtdparts", NULL);
1962 env_set("partition", NULL);
1967 } else if (strcmp(argv[1], "delall") == 0) {
1968 /* this may be the first run, initialize lists if needed */
1971 env_set("mtdparts", NULL);
1973 /* mtd_devices_init() calls current_save() */
1974 return mtd_devices_init();
1978 /* make sure we are in sync with env variables */
1979 if (mtdparts_init() != 0)
1987 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1988 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1989 #define PART_ADD_DESC_MAXLEN 64
1990 char tmpbuf[PART_ADD_DESC_MAXLEN];
1991 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1992 struct mtd_info *mtd;
1993 uint64_t next_offset;
1996 struct mtd_device *dev;
1997 struct mtd_device *dev_tmp;
1999 struct part_info *p;
2001 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
2004 if ((id = id_find(type, num)) == NULL) {
2005 printf("no such device %s defined in mtdids variable\n", argv[2]);
2009 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
2010 len += strlen(argv[3]); /* size@offset */
2011 len += strlen(argv[4]) + 2; /* '(' name ')' */
2012 if (argv[5] && (strlen(argv[5]) == 2))
2013 len += 2; /* 'ro' */
2015 if (len >= PART_ADD_DESC_MAXLEN) {
2016 printf("too long partition description\n");
2019 sprintf(tmpbuf, "%s:%s(%s)%s",
2020 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
2021 debug("add tmpbuf: %s\n", tmpbuf);
2023 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2026 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
2027 dev->id->num, dev->id->mtd_id);
2029 p = list_entry(dev->parts.next, struct part_info, link);
2031 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2032 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2035 if (!strcmp(&argv[1][3], ".spread")) {
2036 spread_partition(mtd, p, &next_offset);
2037 debug("increased %s to %llu bytes\n", p->name, p->size);
2041 dev_tmp = device_find(dev->id->type, dev->id->num);
2042 if (dev_tmp == NULL) {
2044 } else if (part_add(dev_tmp, p) != 0) {
2045 /* merge new partition with existing ones*/
2050 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2051 printf("generated mtdparts too long, resetting to null\n");
2058 /* mtdparts del part-id */
2059 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2060 debug("del: part-id = %s\n", argv[2]);
2062 return delete_partition(argv[2]);
2065 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2066 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2067 return spread_partitions();
2068 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2070 return CMD_RET_USAGE;
2073 /***************************************************/
2075 chpart, 2, 0, do_chpart,
2076 "change active partition of a MTD device",
2078 " - change active partition (e.g. part-id = nand0,1) of a MTD device"
2081 U_BOOT_LONGHELP(mtdparts,
2083 " - list partition table\n"
2085 " - delete all partitions\n"
2086 "mtdparts del part-id\n"
2087 " - delete partition (e.g. part-id = nand0,1)\n"
2088 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2089 " - add partition\n"
2090 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2091 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2092 " - add partition, padding size by skipping bad blocks\n"
2094 "mtdparts default\n"
2095 " - reset partition table to defaults\n"
2096 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2098 " - adjust the sizes of the partitions so they are\n"
2099 " at least as big as the mtdparts variable specifies\n"
2100 " and they each start on a good block\n\n"
2103 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2105 "this command uses three environment variables:\n\n"
2106 "'partition' - keeps current partition identifier\n\n"
2107 "partition := <part-id>\n"
2108 "<part-id> := <dev-id>,part_num\n\n"
2109 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2110 "mtdids=<idmap>[,<idmap>,...]\n\n"
2111 "<idmap> := <dev-id>=<mtd-id>\n"
2112 "<dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>\n"
2113 "<dev-num> := mtd device number, 0...\n"
2114 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2115 "'mtdparts' - partition list\n\n"
2116 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2117 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2118 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2119 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2120 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2121 "<offset> := partition start offset within the device\n"
2122 "<name> := '(' NAME ')'\n"
2123 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)");
2126 mtdparts, 6, 0, do_mtdparts,
2127 "define flash/nand partitions", mtdparts_help_text
2129 /***************************************************/