3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
9 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
12 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
14 * Added support for reading flash partition table from environment.
15 * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
19 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
21 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
22 * Copyright 2002 SYSGO Real-Time Solutions GmbH
24 * SPDX-License-Identifier: GPL-2.0+
28 * Three environment variables are used by the parsing routines:
30 * 'partition' - keeps current partition identifier
32 * partition := <part-id>
33 * <part-id> := <dev-id>,part_num
36 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
38 * mtdids=<idmap>[,<idmap>,...]
40 * <idmap> := <dev-id>=<mtd-id>
41 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
42 * <dev-num> := mtd device number, 0...
43 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
46 * 'mtdparts' - partition list
48 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
50 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
51 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
52 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
53 * <size> := standard linux memsize OR '-' to denote all remaining space
54 * <offset> := partition start offset within the device
55 * <name> := '(' NAME ')'
56 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
59 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
60 * - if the above variables are not set defaults for a given target are used
64 * 1 NOR Flash, with 1 single writable partition:
65 * mtdids=nor0=edb7312-nor
66 * mtdparts=mtdparts=edb7312-nor:-
68 * 1 NOR Flash with 2 partitions, 1 NAND with one
69 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
70 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
77 #include <jffs2/load_kernel.h>
78 #include <linux/list.h>
79 #include <linux/ctype.h>
80 #include <linux/err.h>
81 #include <linux/mtd/mtd.h>
83 #if defined(CONFIG_CMD_NAND)
84 #include <linux/mtd/nand.h>
88 #if defined(CONFIG_CMD_ONENAND)
89 #include <linux/mtd/onenand.h>
90 #include <onenand_uboot.h>
93 DECLARE_GLOBAL_DATA_PTR;
95 /* special size referring to all the remaining space in a partition */
96 #define SIZE_REMAINING (~0llu)
98 /* special offset value, it is used when not provided by user
100 * this value is used temporarily during parsing, later such offests
101 * are recalculated */
102 #define OFFSET_NOT_SPECIFIED (~0llu)
104 /* minimum partition size */
105 #define MIN_PART_SIZE 4096
107 /* this flag needs to be set in part_info struct mask_flags
108 * field for read-only partitions */
109 #define MTD_WRITEABLE_CMD 1
111 /* default values for mtdids and mtdparts variables */
112 #if defined(MTDIDS_DEFAULT)
113 static const char *const mtdids_default = MTDIDS_DEFAULT;
115 static const char *const mtdids_default = NULL;
118 #if defined(MTDPARTS_DEFAULT)
119 static const char *const mtdparts_default = MTDPARTS_DEFAULT;
121 static const char *const mtdparts_default = NULL;
124 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
125 #define MTDIDS_MAXLEN 128
126 #define MTDPARTS_MAXLEN 512
127 #define PARTITION_MAXLEN 16
128 static char last_ids[MTDIDS_MAXLEN];
129 static char last_parts[MTDPARTS_MAXLEN];
130 static char last_partition[PARTITION_MAXLEN];
132 /* low level jffs2 cache cleaning routine */
133 extern void jffs2_free_cache(struct part_info *part);
135 /* mtdids mapping list, filled by parse_ids() */
136 static struct list_head mtdids;
138 /* device/partition list, parse_cmdline() parses into here */
139 static struct list_head devices;
141 /* current active device and partition number */
142 struct mtd_device *current_mtd_dev = NULL;
143 u8 current_mtd_partnum = 0;
145 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num);
147 /* command line only routines */
148 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
149 static int device_del(struct mtd_device *dev);
152 * Parses a string into a number. The number stored at ptr is
153 * potentially suffixed with K (for kilobytes, or 1024 bytes),
154 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
155 * 1073741824). If the number is suffixed with K, M, or G, then
156 * the return value is the number multiplied by one kilobyte, one
157 * megabyte, or one gigabyte, respectively.
159 * @param ptr where parse begins
160 * @param retptr output pointer to next char after parse completes (output)
161 * @return resulting unsigned int
163 static u64 memsize_parse (const char *const ptr, const char **retptr)
165 u64 ret = simple_strtoull(ptr, (char **)retptr, 0);
186 * Format string describing supplied size. This routine does the opposite job
187 * to memsize_parse(). Size in bytes is converted to string and if possible
188 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
190 * Note, that this routine does not check for buffer overflow, it's the caller
191 * who must assure enough space.
193 * @param buf output buffer
194 * @param size size to be converted to string
196 static void memsize_format(char *buf, u64 size)
198 #define SIZE_GB ((u32)1024*1024*1024)
199 #define SIZE_MB ((u32)1024*1024)
200 #define SIZE_KB ((u32)1024)
202 if ((size % SIZE_GB) == 0)
203 sprintf(buf, "%llug", size/SIZE_GB);
204 else if ((size % SIZE_MB) == 0)
205 sprintf(buf, "%llum", size/SIZE_MB);
206 else if (size % SIZE_KB == 0)
207 sprintf(buf, "%lluk", size/SIZE_KB);
209 sprintf(buf, "%llu", size);
213 * This routine does global indexing of all partitions. Resulting index for
214 * current partition is saved in 'mtddevnum'. Current partition name in
217 static void index_partitions(void)
220 struct part_info *part;
221 struct list_head *dentry;
222 struct mtd_device *dev;
224 debug("--- index partitions ---\n");
226 if (current_mtd_dev) {
228 list_for_each(dentry, &devices) {
229 dev = list_entry(dentry, struct mtd_device, link);
230 if (dev == current_mtd_dev) {
231 mtddevnum += current_mtd_partnum;
232 setenv_ulong("mtddevnum", mtddevnum);
235 mtddevnum += dev->num_parts;
238 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
239 setenv("mtddevname", part->name);
241 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
243 setenv("mtddevnum", NULL);
244 setenv("mtddevname", NULL);
246 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
251 * Save current device and partition in environment variable 'partition'.
253 static void current_save(void)
257 debug("--- current_save ---\n");
259 if (current_mtd_dev) {
260 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev->id->type),
261 current_mtd_dev->id->num, current_mtd_partnum);
263 setenv("partition", buf);
264 strncpy(last_partition, buf, 16);
266 debug("=> partition %s\n", buf);
268 setenv("partition", NULL);
269 last_partition[0] = '\0';
271 debug("=> partition NULL\n");
278 * Produce a mtd_info given a type and num.
280 * @param type mtd type
281 * @param num mtd number
282 * @param mtd a pointer to an mtd_info instance (output)
283 * @return 0 if device is valid, 1 otherwise
285 static int get_mtd_info(u8 type, u8 num, struct mtd_info **mtd)
289 sprintf(mtd_dev, "%s%d", MTD_DEV_TYPE(type), num);
290 *mtd = get_mtd_device_nm(mtd_dev);
292 printf("Device %s not found!\n", mtd_dev);
295 put_mtd_device(*mtd);
301 * Performs sanity check for supplied flash partition.
302 * Table of existing MTD flash devices is searched and partition device
303 * is located. Alignment with the granularity of nand erasesize is verified.
305 * @param id of the parent device
306 * @param part partition to validate
307 * @return 0 if partition is valid, 1 otherwise
309 static int part_validate_eraseblock(struct mtdids *id, struct part_info *part)
311 struct mtd_info *mtd = NULL;
316 if (get_mtd_info(id->type, id->num, &mtd))
319 part->sector_size = mtd->erasesize;
321 if (!mtd->numeraseregions) {
323 * Only one eraseregion (NAND, OneNAND or uniform NOR),
324 * checking for alignment is easy here
326 offset = part->offset;
327 if (do_div(offset, mtd->erasesize)) {
328 printf("%s%d: partition (%s) start offset"
329 "alignment incorrect\n",
330 MTD_DEV_TYPE(id->type), id->num, part->name);
335 if (do_div(size, mtd->erasesize)) {
336 printf("%s%d: partition (%s) size alignment incorrect\n",
337 MTD_DEV_TYPE(id->type), id->num, part->name);
342 * Multiple eraseregions (non-uniform NOR),
343 * checking for alignment is more complex here
346 /* Check start alignment */
347 for (i = 0; i < mtd->numeraseregions; i++) {
348 start = mtd->eraseregions[i].offset;
349 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
350 if (part->offset == start)
352 start += mtd->eraseregions[i].erasesize;
356 printf("%s%d: partition (%s) start offset alignment incorrect\n",
357 MTD_DEV_TYPE(id->type), id->num, part->name);
362 /* Check end/size alignment */
363 for (i = 0; i < mtd->numeraseregions; i++) {
364 start = mtd->eraseregions[i].offset;
365 for (j = 0; j < mtd->eraseregions[i].numblocks; j++) {
366 if ((part->offset + part->size) == start)
368 start += mtd->eraseregions[i].erasesize;
371 /* Check last sector alignment */
372 if ((part->offset + part->size) == start)
375 printf("%s%d: partition (%s) size alignment incorrect\n",
376 MTD_DEV_TYPE(id->type), id->num, part->name);
388 * Performs sanity check for supplied partition. Offset and size are
389 * verified to be within valid range. Partition type is checked and
390 * part_validate_eraseblock() is called with the argument of part.
392 * @param id of the parent device
393 * @param part partition to validate
394 * @return 0 if partition is valid, 1 otherwise
396 static int part_validate(struct mtdids *id, struct part_info *part)
398 if (part->size == SIZE_REMAINING)
399 part->size = id->size - part->offset;
401 if (part->offset > id->size) {
402 printf("%s: offset %08llx beyond flash size %08llx\n",
403 id->mtd_id, part->offset, id->size);
407 if ((part->offset + part->size) <= part->offset) {
408 printf("%s%d: partition (%s) size too big\n",
409 MTD_DEV_TYPE(id->type), id->num, part->name);
413 if (part->offset + part->size > id->size) {
414 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
419 * Now we need to check if the partition starts and ends on
420 * sector (eraseblock) regions
422 return part_validate_eraseblock(id, part);
426 * Delete selected partition from the partition list of the specified device.
428 * @param dev device to delete partition from
429 * @param part partition to delete
430 * @return 0 on success, 1 otherwise
432 static int part_del(struct mtd_device *dev, struct part_info *part)
434 u8 current_save_needed = 0;
436 /* if there is only one partition, remove whole device */
437 if (dev->num_parts == 1)
438 return device_del(dev);
440 /* otherwise just delete this partition */
442 if (dev == current_mtd_dev) {
443 /* we are modyfing partitions for the current device,
445 struct part_info *curr_pi;
446 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
449 if (curr_pi == part) {
450 printf("current partition deleted, resetting current to 0\n");
451 current_mtd_partnum = 0;
452 } else if (part->offset <= curr_pi->offset) {
453 current_mtd_partnum--;
455 current_save_needed = 1;
459 list_del(&part->link);
463 if (current_save_needed > 0)
472 * Delete all partitions from parts head list, free memory.
474 * @param head list of partitions to delete
476 static void part_delall(struct list_head *head)
478 struct list_head *entry, *n;
479 struct part_info *part_tmp;
481 /* clean tmp_list and free allocated memory */
482 list_for_each_safe(entry, n, head) {
483 part_tmp = list_entry(entry, struct part_info, link);
491 * Add new partition to the supplied partition list. Make sure partitions are
492 * sorted by offset in ascending order.
494 * @param head list this partition is to be added to
495 * @param new partition to be added
497 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
499 struct list_head *entry;
500 struct part_info *new_pi, *curr_pi;
502 /* link partition to parrent dev */
505 if (list_empty(&dev->parts)) {
506 debug("part_sort_add: list empty\n");
507 list_add(&part->link, &dev->parts);
513 new_pi = list_entry(&part->link, struct part_info, link);
515 /* get current partition info if we are updating current device */
517 if (dev == current_mtd_dev)
518 curr_pi = mtd_part_info(current_mtd_dev, current_mtd_partnum);
520 list_for_each(entry, &dev->parts) {
521 struct part_info *pi;
523 pi = list_entry(entry, struct part_info, link);
525 /* be compliant with kernel cmdline, allow only one partition at offset zero */
526 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
527 printf("cannot add second partition at offset 0\n");
531 if (new_pi->offset <= pi->offset) {
532 list_add_tail(&part->link, entry);
535 if (curr_pi && (pi->offset <= curr_pi->offset)) {
536 /* we are modyfing partitions for the current
537 * device, update current */
538 current_mtd_partnum++;
547 list_add_tail(&part->link, &dev->parts);
554 * Add provided partition to the partition list of a given device.
556 * @param dev device to which partition is added
557 * @param part partition to be added
558 * @return 0 on success, 1 otherwise
560 static int part_add(struct mtd_device *dev, struct part_info *part)
562 /* verify alignment and size */
563 if (part_validate(dev->id, part) != 0)
566 /* partition is ok, add it to the list */
567 if (part_sort_add(dev, part) != 0)
574 * Parse one partition definition, allocate memory and return pointer to this
575 * location in retpart.
577 * @param partdef pointer to the partition definition string i.e. <part-def>
578 * @param ret output pointer to next char after parse completes (output)
579 * @param retpart pointer to the allocated partition (output)
580 * @return 0 on success, 1 otherwise
582 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
584 struct part_info *part;
589 unsigned int mask_flags;
596 /* fetch the partition size */
598 /* assign all remaining space to this partition */
599 debug("'-': remaining size assigned\n");
600 size = SIZE_REMAINING;
603 size = memsize_parse(p, &p);
604 if (size < MIN_PART_SIZE) {
605 printf("partition size too small (%llx)\n", size);
610 /* check for offset */
611 offset = OFFSET_NOT_SPECIFIED;
614 offset = memsize_parse(p, &p);
617 /* now look for the name */
620 if ((p = strchr(name, ')')) == NULL) {
621 printf("no closing ) found in partition name\n");
624 name_len = p - name + 1;
625 if ((name_len - 1) == 0) {
626 printf("empty partition name\n");
631 /* 0x00000000@0x00000000 */
636 /* test for options */
638 if (strncmp(p, "ro", 2) == 0) {
639 mask_flags |= MTD_WRITEABLE_CMD;
643 /* check for next partition definition */
645 if (size == SIZE_REMAINING) {
647 printf("no partitions allowed after a fill-up partition\n");
651 } else if ((*p == ';') || (*p == '\0')) {
654 printf("unexpected character '%c' at the end of partition\n", *p);
659 /* allocate memory */
660 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
662 printf("out of memory\n");
665 memset(part, 0, sizeof(struct part_info) + name_len);
667 part->offset = offset;
668 part->mask_flags = mask_flags;
669 part->name = (char *)(part + 1);
672 /* copy user provided name */
673 strncpy(part->name, name, name_len - 1);
676 /* auto generated name in form of size@offset */
677 sprintf(part->name, "0x%08llx@0x%08llx", size, offset);
681 part->name[name_len - 1] = '\0';
682 INIT_LIST_HEAD(&part->link);
684 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
685 part->name, part->size,
686 part->offset, part->mask_flags);
693 * Check device number to be within valid range for given device type.
695 * @param type mtd type
696 * @param num mtd number
697 * @param size a pointer to the size of the mtd device (output)
698 * @return 0 if device is valid, 1 otherwise
700 static int mtd_device_validate(u8 type, u8 num, u64 *size)
702 struct mtd_info *mtd = NULL;
704 if (get_mtd_info(type, num, &mtd))
713 * Delete all mtd devices from a supplied devices list, free memory allocated for
714 * each device and delete all device partitions.
716 * @return 0 on success, 1 otherwise
718 static int device_delall(struct list_head *head)
720 struct list_head *entry, *n;
721 struct mtd_device *dev_tmp;
723 /* clean devices list */
724 list_for_each_safe(entry, n, head) {
725 dev_tmp = list_entry(entry, struct mtd_device, link);
727 part_delall(&dev_tmp->parts);
730 INIT_LIST_HEAD(&devices);
736 * If provided device exists it's partitions are deleted, device is removed
737 * from device list and device memory is freed.
739 * @param dev device to be deleted
740 * @return 0 on success, 1 otherwise
742 static int device_del(struct mtd_device *dev)
744 part_delall(&dev->parts);
745 list_del(&dev->link);
748 if (dev == current_mtd_dev) {
749 /* we just deleted current device */
750 if (list_empty(&devices)) {
751 current_mtd_dev = NULL;
753 /* reset first partition from first dev from the
754 * devices list as current */
755 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
756 current_mtd_partnum = 0;
767 * Search global device list and return pointer to the device of type and num
770 * @param type device type
771 * @param num device number
772 * @return NULL if requested device does not exist
774 struct mtd_device *device_find(u8 type, u8 num)
776 struct list_head *entry;
777 struct mtd_device *dev_tmp;
779 list_for_each(entry, &devices) {
780 dev_tmp = list_entry(entry, struct mtd_device, link);
782 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
790 * Add specified device to the global device list.
792 * @param dev device to be added
794 static void device_add(struct mtd_device *dev)
796 u8 current_save_needed = 0;
798 if (list_empty(&devices)) {
799 current_mtd_dev = dev;
800 current_mtd_partnum = 0;
801 current_save_needed = 1;
804 list_add_tail(&dev->link, &devices);
806 if (current_save_needed > 0)
813 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
814 * return pointer to the device structure.
816 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
817 * @param ret output pointer to next char after parse completes (output)
818 * @param retdev pointer to the allocated device (output)
819 * @return 0 on success, 1 otherwise
821 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
823 struct mtd_device *dev;
824 struct part_info *part;
827 unsigned int mtd_id_len;
831 struct list_head *entry, *n;
836 debug("===device_parse===\n");
845 mtd_id = p = mtd_dev;
846 if (!(p = strchr(mtd_id, ':'))) {
847 printf("no <mtd-id> identifier\n");
850 mtd_id_len = p - mtd_id + 1;
853 /* verify if we have a valid device specified */
854 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
855 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
860 pend = strchr(p, ';');
862 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
863 id->type, MTD_DEV_TYPE(id->type),
864 id->num, id->mtd_id);
865 debug("parsing partitions %.*s\n", (int)(pend ? pend - p : strlen(p)), p);
868 /* parse partitions */
872 if ((dev = device_find(id->type, id->num)) != NULL) {
873 /* if device already exists start at the end of the last partition */
874 part = list_entry(dev->parts.prev, struct part_info, link);
875 offset = part->offset + part->size;
878 while (p && (*p != '\0') && (*p != ';')) {
880 if ((part_parse(p, &p, &part) != 0) || (!part))
883 /* calculate offset when not specified */
884 if (part->offset == OFFSET_NOT_SPECIFIED)
885 part->offset = offset;
887 offset = part->offset;
889 /* verify alignment and size */
890 if (part_validate(id, part) != 0)
893 offset += part->size;
895 /* partition is ok, add it to the list */
896 list_add_tail(&part->link, &tmp_list);
901 part_delall(&tmp_list);
905 if (num_parts == 0) {
906 printf("no partitions for device %s%d (%s)\n",
907 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
911 debug("\ntotal partitions: %d\n", num_parts);
913 /* check for next device presence */
918 } else if (*p == '\0') {
922 printf("unexpected character '%c' at the end of device\n", *p);
929 /* allocate memory for mtd_device structure */
930 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
931 printf("out of memory\n");
934 memset(dev, 0, sizeof(struct mtd_device));
936 dev->num_parts = 0; /* part_sort_add increments num_parts */
937 INIT_LIST_HEAD(&dev->parts);
938 INIT_LIST_HEAD(&dev->link);
940 /* move partitions from tmp_list to dev->parts */
941 list_for_each_safe(entry, n, &tmp_list) {
942 part = list_entry(entry, struct part_info, link);
944 if (part_sort_add(dev, part) != 0) {
957 * Initialize global device list.
959 * @return 0 on success, 1 otherwise
961 static int mtd_devices_init(void)
963 last_parts[0] = '\0';
964 current_mtd_dev = NULL;
967 return device_delall(&devices);
971 * Search global mtdids list and find id of requested type and number.
973 * @return pointer to the id if it exists, NULL otherwise
975 static struct mtdids* id_find(u8 type, u8 num)
977 struct list_head *entry;
980 list_for_each(entry, &mtdids) {
981 id = list_entry(entry, struct mtdids, link);
983 if ((id->type == type) && (id->num == num))
991 * Search global mtdids list and find id of a requested mtd_id.
993 * Note: first argument is not null terminated.
995 * @param mtd_id string containing requested mtd_id
996 * @param mtd_id_len length of supplied mtd_id
997 * @return pointer to the id if it exists, NULL otherwise
999 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1001 struct list_head *entry;
1004 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1005 mtd_id_len, mtd_id, mtd_id_len);
1007 list_for_each(entry, &mtdids) {
1008 id = list_entry(entry, struct mtdids, link);
1010 debug("entry: '%s' (len = %zu)\n",
1011 id->mtd_id, strlen(id->mtd_id));
1013 if (mtd_id_len != strlen(id->mtd_id))
1015 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1023 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1024 * return device type and number.
1026 * @param id string describing device id
1027 * @param ret_id output pointer to next char after parse completes (output)
1028 * @param dev_type parsed device type (output)
1029 * @param dev_num parsed device number (output)
1030 * @return 0 on success, 1 otherwise
1032 int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type,
1038 if (strncmp(p, "nand", 4) == 0) {
1039 *dev_type = MTD_DEV_TYPE_NAND;
1041 } else if (strncmp(p, "nor", 3) == 0) {
1042 *dev_type = MTD_DEV_TYPE_NOR;
1044 } else if (strncmp(p, "onenand", 7) == 0) {
1045 *dev_type = MTD_DEV_TYPE_ONENAND;
1048 printf("incorrect device type in %s\n", id);
1053 printf("incorrect device number in %s\n", id);
1057 *dev_num = simple_strtoul(p, (char **)&p, 0);
1064 * Process all devices and generate corresponding mtdparts string describing
1065 * all partitions on all devices.
1067 * @param buf output buffer holding generated mtdparts string (output)
1068 * @param buflen buffer size
1069 * @return 0 on success, 1 otherwise
1071 static int generate_mtdparts(char *buf, u32 buflen)
1073 struct list_head *pentry, *dentry;
1074 struct mtd_device *dev;
1075 struct part_info *part, *prev_part;
1080 u32 maxlen = buflen - 1;
1082 debug("--- generate_mtdparts ---\n");
1084 if (list_empty(&devices)) {
1089 strcpy(p, "mtdparts=");
1092 list_for_each(dentry, &devices) {
1093 dev = list_entry(dentry, struct mtd_device, link);
1096 len = strlen(dev->id->mtd_id) + 1;
1099 memcpy(p, dev->id->mtd_id, len - 1);
1104 /* format partitions */
1107 list_for_each(pentry, &dev->parts) {
1108 part = list_entry(pentry, struct part_info, link);
1110 offset = part->offset;
1113 /* partition size */
1114 memsize_format(tmpbuf, size);
1115 len = strlen(tmpbuf);
1118 memcpy(p, tmpbuf, len);
1123 /* add offset only when there is a gap between
1125 if ((!prev_part && (offset != 0)) ||
1126 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1128 memsize_format(tmpbuf, offset);
1129 len = strlen(tmpbuf) + 1;
1133 memcpy(p, tmpbuf, len - 1);
1138 /* copy name only if user supplied */
1139 if(!part->auto_name) {
1140 len = strlen(part->name) + 2;
1145 memcpy(p, part->name, len - 2);
1152 if (part->mask_flags && MTD_WRITEABLE_CMD) {
1161 /* print ',' separator if there are other partitions
1163 if (dev->num_parts > part_cnt) {
1171 /* print ';' separator if there are other devices following */
1172 if (dentry->next != &devices) {
1180 /* we still have at least one char left, as we decremented maxlen at
1187 last_parts[0] = '\0';
1192 * Call generate_mtdparts to process all devices and generate corresponding
1193 * mtdparts string, save it in mtdparts environment variable.
1195 * @param buf output buffer holding generated mtdparts string (output)
1196 * @param buflen buffer size
1197 * @return 0 on success, 1 otherwise
1199 static int generate_mtdparts_save(char *buf, u32 buflen)
1203 ret = generate_mtdparts(buf, buflen);
1205 if ((buf[0] != '\0') && (ret == 0))
1206 setenv("mtdparts", buf);
1208 setenv("mtdparts", NULL);
1213 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1215 * Get the net size (w/o bad blocks) of the given partition.
1217 * @param mtd the mtd info
1218 * @param part the partition
1219 * @return the calculated net size of this partition
1221 static uint64_t net_part_size(struct mtd_info *mtd, struct part_info *part)
1223 uint64_t i, net_size = 0;
1225 if (!mtd->block_isbad)
1228 for (i = 0; i < part->size; i += mtd->erasesize) {
1229 if (!mtd->block_isbad(mtd, part->offset + i))
1230 net_size += mtd->erasesize;
1237 static void print_partition_table(void)
1239 struct list_head *dentry, *pentry;
1240 struct part_info *part;
1241 struct mtd_device *dev;
1244 list_for_each(dentry, &devices) {
1245 dev = list_entry(dentry, struct mtd_device, link);
1246 /* list partitions for given device */
1248 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1249 struct mtd_info *mtd;
1251 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1254 printf("\ndevice %s%d <%s>, # parts = %d\n",
1255 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1256 dev->id->mtd_id, dev->num_parts);
1257 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1259 list_for_each(pentry, &dev->parts) {
1263 part = list_entry(pentry, struct part_info, link);
1264 net_size = net_part_size(mtd, part);
1265 size_note = part->size == net_size ? " " : " (!)";
1266 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1267 part_num, part->name, part->size,
1268 net_size, size_note, part->offset,
1270 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1271 printf("\ndevice %s%d <%s>, # parts = %d\n",
1272 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1273 dev->id->mtd_id, dev->num_parts);
1274 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1276 list_for_each(pentry, &dev->parts) {
1277 part = list_entry(pentry, struct part_info, link);
1278 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1279 part_num, part->name, part->size,
1280 part->offset, part->mask_flags);
1281 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1286 if (list_empty(&devices))
1287 printf("no partitions defined\n");
1291 * Format and print out a partition list for each device from global device
1294 static void list_partitions(void)
1296 struct part_info *part;
1298 debug("\n---list_partitions---\n");
1299 print_partition_table();
1301 /* current_mtd_dev is not NULL only when we have non empty device list */
1302 if (current_mtd_dev) {
1303 part = mtd_part_info(current_mtd_dev, current_mtd_partnum);
1305 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1306 MTD_DEV_TYPE(current_mtd_dev->id->type),
1307 current_mtd_dev->id->num, current_mtd_partnum,
1308 part->name, part->size, part->offset);
1310 printf("could not get current partition info\n\n");
1314 printf("\ndefaults:\n");
1315 printf("mtdids : %s\n",
1316 mtdids_default ? mtdids_default : "none");
1318 * Using printf() here results in printbuffer overflow
1319 * if default mtdparts string is greater than console
1320 * printbuffer. Use puts() to prevent system crashes.
1323 puts(mtdparts_default ? mtdparts_default : "none");
1328 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1329 * corresponding device and verify partition number.
1331 * @param id string describing device and partition or partition name
1332 * @param dev pointer to the requested device (output)
1333 * @param part_num verified partition number (output)
1334 * @param part pointer to requested partition (output)
1335 * @return 0 on success, 1 otherwise
1337 int find_dev_and_part(const char *id, struct mtd_device **dev,
1338 u8 *part_num, struct part_info **part)
1340 struct list_head *dentry, *pentry;
1341 u8 type, dnum, pnum;
1344 debug("--- find_dev_and_part ---\nid = %s\n", id);
1346 list_for_each(dentry, &devices) {
1348 *dev = list_entry(dentry, struct mtd_device, link);
1349 list_for_each(pentry, &(*dev)->parts) {
1350 *part = list_entry(pentry, struct part_info, link);
1351 if (strcmp((*part)->name, id) == 0)
1362 if (mtd_id_parse(p, &p, &type, &dnum) != 0)
1365 if ((*p++ != ',') || (*p == '\0')) {
1366 printf("no partition number specified\n");
1369 pnum = simple_strtoul(p, (char **)&p, 0);
1371 printf("unexpected trailing character '%c'\n", *p);
1375 if ((*dev = device_find(type, dnum)) == NULL) {
1376 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1380 if ((*part = mtd_part_info(*dev, pnum)) == NULL) {
1381 printf("no such partition\n");
1392 * Find and delete partition. For partition id format see find_dev_and_part().
1394 * @param id string describing device and partition
1395 * @return 0 on success, 1 otherwise
1397 static int delete_partition(const char *id)
1400 struct mtd_device *dev;
1401 struct part_info *part;
1403 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1405 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1406 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1407 part->name, part->size, part->offset);
1409 if (part_del(dev, part) != 0)
1412 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1413 printf("generated mtdparts too long, resetting to null\n");
1419 printf("partition %s not found\n", id);
1423 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1425 * Increase the size of the given partition so that it's net size is at least
1426 * as large as the size member and such that the next partition would start on a
1427 * good block if it were adjacent to this partition.
1429 * @param mtd the mtd device
1430 * @param part the partition
1431 * @param next_offset pointer to the offset of the next partition after this
1432 * partition's size has been modified (output)
1434 static void spread_partition(struct mtd_info *mtd, struct part_info *part,
1435 uint64_t *next_offset)
1437 uint64_t net_size, padding_size = 0;
1440 mtd_get_len_incl_bad(mtd, part->offset, part->size, &net_size,
1444 * Absorb bad blocks immediately following this
1445 * partition also into the partition, such that
1446 * the next partition starts with a good block.
1449 mtd_get_len_incl_bad(mtd, part->offset + net_size,
1450 mtd->erasesize, &padding_size, &truncated);
1454 padding_size -= mtd->erasesize;
1458 printf("truncated partition %s to %lld bytes\n", part->name,
1459 (uint64_t) net_size + padding_size);
1462 part->size = net_size + padding_size;
1463 *next_offset = part->offset + part->size;
1467 * Adjust all of the partition sizes, such that all partitions are at least
1468 * as big as their mtdparts environment variable sizes and they each start
1471 * @return 0 on success, 1 otherwise
1473 static int spread_partitions(void)
1475 struct list_head *dentry, *pentry;
1476 struct mtd_device *dev;
1477 struct part_info *part;
1478 struct mtd_info *mtd;
1482 list_for_each(dentry, &devices) {
1483 dev = list_entry(dentry, struct mtd_device, link);
1485 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
1490 list_for_each(pentry, &dev->parts) {
1491 part = list_entry(pentry, struct part_info, link);
1493 debug("spread_partitions: device = %s%d, partition %d ="
1494 " (%s) 0x%08x@0x%08x\n",
1495 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1496 part_num, part->name, part->size,
1499 if (cur_offs > part->offset)
1500 part->offset = cur_offs;
1502 spread_partition(mtd, part, &cur_offs);
1510 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1511 printf("generated mtdparts too long, resetting to null\n");
1516 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1519 * Accept character string describing mtd partitions and call device_parse()
1520 * for each entry. Add created devices to the global devices list.
1522 * @param mtdparts string specifing mtd partitions
1523 * @return 0 on success, 1 otherwise
1525 static int parse_mtdparts(const char *const mtdparts)
1527 const char *p = mtdparts;
1528 struct mtd_device *dev;
1530 char tmp_parts[MTDPARTS_MAXLEN];
1532 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
1534 /* delete all devices and partitions */
1535 if (mtd_devices_init() != 0) {
1536 printf("could not initialise device list\n");
1540 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1541 if (gd->flags & GD_FLG_ENV_READY) {
1542 p = getenv("mtdparts");
1545 getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
1548 if (strncmp(p, "mtdparts=", 9) != 0) {
1549 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1554 while (p && (*p != '\0')) {
1556 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1559 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1560 dev->id->num, dev->id->mtd_id);
1562 /* check if parsed device is already on the list */
1563 if (device_find(dev->id->type, dev->id->num) != NULL) {
1564 printf("device %s%d redefined, please correct mtdparts variable\n",
1565 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1569 list_add_tail(&dev->link, &devices);
1573 device_delall(&devices);
1581 * Parse provided string describing mtdids mapping (see file header for mtdids
1582 * variable format). Allocate memory for each entry and add all found entries
1583 * to the global mtdids list.
1585 * @param ids mapping string
1586 * @return 0 on success, 1 otherwise
1588 static int parse_mtdids(const char *const ids)
1590 const char *p = ids;
1594 struct list_head *entry, *n;
1595 struct mtdids *id_tmp;
1600 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1602 /* clean global mtdids list */
1603 list_for_each_safe(entry, n, &mtdids) {
1604 id_tmp = list_entry(entry, struct mtdids, link);
1605 debug("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1610 INIT_LIST_HEAD(&mtdids);
1612 while(p && (*p != '\0')) {
1615 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1616 if (mtd_id_parse(p, &p, &type, &num) != 0)
1620 printf("mtdids: incorrect <dev-num>\n");
1625 /* check if requested device exists */
1626 if (mtd_device_validate(type, num, &size) != 0)
1629 /* locate <mtd-id> */
1631 if ((p = strchr(mtd_id, ',')) != NULL) {
1632 mtd_id_len = p - mtd_id + 1;
1635 mtd_id_len = strlen(mtd_id) + 1;
1637 if (mtd_id_len == 0) {
1638 printf("mtdids: no <mtd-id> identifier\n");
1642 /* check if this id is already on the list */
1643 int double_entry = 0;
1644 list_for_each(entry, &mtdids) {
1645 id_tmp = list_entry(entry, struct mtdids, link);
1646 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1652 printf("device id %s%d redefined, please correct mtdids variable\n",
1653 MTD_DEV_TYPE(type), num);
1657 /* allocate mtdids structure */
1658 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1659 printf("out of memory\n");
1662 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1666 id->mtd_id = (char *)(id + 1);
1667 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1668 id->mtd_id[mtd_id_len - 1] = '\0';
1669 INIT_LIST_HEAD(&id->link);
1671 debug("+ id %s%d\t%16lld bytes\t%s\n",
1672 MTD_DEV_TYPE(id->type), id->num,
1673 id->size, id->mtd_id);
1675 list_add_tail(&id->link, &mtdids);
1679 /* clean mtdids list and free allocated memory */
1680 list_for_each_safe(entry, n, &mtdids) {
1681 id_tmp = list_entry(entry, struct mtdids, link);
1692 * Parse and initialize global mtdids mapping and create global
1693 * device/partition list.
1695 * @return 0 on success, 1 otherwise
1697 int mtdparts_init(void)
1699 static int initialized = 0;
1700 const char *ids, *parts;
1701 const char *current_partition;
1703 char tmp_ep[PARTITION_MAXLEN];
1704 char tmp_parts[MTDPARTS_MAXLEN];
1706 debug("\n---mtdparts_init---\n");
1708 INIT_LIST_HEAD(&mtdids);
1709 INIT_LIST_HEAD(&devices);
1710 memset(last_ids, 0, MTDIDS_MAXLEN);
1711 memset(last_parts, 0, MTDPARTS_MAXLEN);
1712 memset(last_partition, 0, PARTITION_MAXLEN);
1717 ids = getenv("mtdids");
1719 * The mtdparts variable tends to be long. If we need to access it
1720 * before the env is relocated, then we need to use our own stack
1721 * buffer. gd->env_buf will be too small.
1723 if (gd->flags & GD_FLG_ENV_READY) {
1724 parts = getenv("mtdparts");
1727 getenv_f("mtdparts", tmp_parts, MTDPARTS_MAXLEN);
1729 current_partition = getenv("partition");
1731 /* save it for later parsing, cannot rely on current partition pointer
1732 * as 'partition' variable may be updated during init */
1734 if (current_partition)
1735 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1737 debug("last_ids : %s\n", last_ids);
1738 debug("env_ids : %s\n", ids);
1739 debug("last_parts: %s\n", last_parts);
1740 debug("env_parts : %s\n\n", parts);
1742 debug("last_partition : %s\n", last_partition);
1743 debug("env_partition : %s\n", current_partition);
1745 /* if mtdids varible is empty try to use defaults */
1747 if (mtdids_default) {
1748 debug("mtdids variable not defined, using default\n");
1749 ids = mtdids_default;
1750 setenv("mtdids", (char *)ids);
1752 printf("mtdids not defined, no default present\n");
1756 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1757 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1761 /* do no try to use defaults when mtdparts variable is not defined,
1762 * just check the length */
1764 printf("mtdparts variable not set, see 'help mtdparts'\n");
1766 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1767 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1771 /* check if we have already parsed those mtdids */
1772 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1777 if (parse_mtdids(ids) != 0) {
1782 /* ok it's good, save new ids */
1783 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1786 /* parse partitions if either mtdparts or mtdids were updated */
1787 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1788 if (parse_mtdparts(parts) != 0)
1791 if (list_empty(&devices)) {
1792 printf("mtdparts_init: no valid partitions\n");
1796 /* ok it's good, save new parts */
1797 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1799 /* reset first partition from first dev from the list as current */
1800 current_mtd_dev = list_entry(devices.next, struct mtd_device, link);
1801 current_mtd_partnum = 0;
1804 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1805 MTD_DEV_TYPE(current_mtd_dev->id->type),
1806 current_mtd_dev->id->num, current_mtd_partnum);
1809 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1810 if (!parts && (last_parts[0] != '\0'))
1811 return mtd_devices_init();
1813 /* do not process current partition if mtdparts variable is null */
1817 /* is current partition set in environment? if so, use it */
1818 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1819 struct part_info *p;
1820 struct mtd_device *cdev;
1823 debug("--- getting current partition: %s\n", tmp_ep);
1825 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1826 current_mtd_dev = cdev;
1827 current_mtd_partnum = pnum;
1830 } else if (getenv("partition") == NULL) {
1831 debug("no partition variable set, setting...\n");
1839 * Return pointer to the partition of a requested number from a requested
1842 * @param dev device that is to be searched for a partition
1843 * @param part_num requested partition number
1844 * @return pointer to the part_info, NULL otherwise
1846 static struct part_info* mtd_part_info(struct mtd_device *dev, unsigned int part_num)
1848 struct list_head *entry;
1849 struct part_info *part;
1855 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1856 part_num, MTD_DEV_TYPE(dev->id->type),
1857 dev->id->num, dev->id->mtd_id);
1859 if (part_num >= dev->num_parts) {
1860 printf("invalid partition number %d for device %s%d (%s)\n",
1861 part_num, MTD_DEV_TYPE(dev->id->type),
1862 dev->id->num, dev->id->mtd_id);
1866 /* locate partition number, return it */
1868 list_for_each(entry, &dev->parts) {
1869 part = list_entry(entry, struct part_info, link);
1871 if (part_num == num++) {
1879 /***************************************************/
1880 /* U-Boot commands */
1881 /***************************************************/
1882 /* command line only */
1884 * Routine implementing u-boot chpart command. Sets new current partition based
1885 * on the user supplied partition id. For partition id format see find_dev_and_part().
1887 * @param cmdtp command internal data
1888 * @param flag command flag
1889 * @param argc number of arguments supplied to the command
1890 * @param argv arguments list
1891 * @return 0 on success, 1 otherwise
1893 static int do_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
1895 /* command line only */
1896 struct mtd_device *dev;
1897 struct part_info *part;
1900 if (mtdparts_init() !=0)
1904 printf("no partition id specified\n");
1908 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1911 current_mtd_dev = dev;
1912 current_mtd_partnum = pnum;
1915 printf("partition changed to %s%d,%d\n",
1916 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1922 * Routine implementing u-boot mtdparts command. Initialize/update default global
1923 * partition list and process user partition request (list, add, del).
1925 * @param cmdtp command internal data
1926 * @param flag command flag
1927 * @param argc number of arguments supplied to the command
1928 * @param argv arguments list
1929 * @return 0 on success, 1 otherwise
1931 static int do_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc,
1932 char * const argv[])
1935 if (strcmp(argv[1], "default") == 0) {
1936 setenv("mtdids", (char *)mtdids_default);
1937 setenv("mtdparts", (char *)mtdparts_default);
1938 setenv("partition", NULL);
1942 } else if (strcmp(argv[1], "delall") == 0) {
1943 /* this may be the first run, initialize lists if needed */
1946 setenv("mtdparts", NULL);
1948 /* mtd_devices_init() calls current_save() */
1949 return mtd_devices_init();
1953 /* make sure we are in sync with env variables */
1954 if (mtdparts_init() != 0)
1962 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1963 if (((argc == 5) || (argc == 6)) && (strncmp(argv[1], "add", 3) == 0)) {
1964 #define PART_ADD_DESC_MAXLEN 64
1965 char tmpbuf[PART_ADD_DESC_MAXLEN];
1966 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1967 struct mtd_info *mtd;
1968 uint64_t next_offset;
1971 struct mtd_device *dev;
1972 struct mtd_device *dev_tmp;
1974 struct part_info *p;
1976 if (mtd_id_parse(argv[2], NULL, &type, &num) != 0)
1979 if ((id = id_find(type, num)) == NULL) {
1980 printf("no such device %s defined in mtdids variable\n", argv[2]);
1984 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
1985 len += strlen(argv[3]); /* size@offset */
1986 len += strlen(argv[4]) + 2; /* '(' name ')' */
1987 if (argv[5] && (strlen(argv[5]) == 2))
1988 len += 2; /* 'ro' */
1990 if (len >= PART_ADD_DESC_MAXLEN) {
1991 printf("too long partition description\n");
1994 sprintf(tmpbuf, "%s:%s(%s)%s",
1995 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
1996 debug("add tmpbuf: %s\n", tmpbuf);
1998 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2001 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
2002 dev->id->num, dev->id->mtd_id);
2004 p = list_entry(dev->parts.next, struct part_info, link);
2006 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2007 if (get_mtd_info(dev->id->type, dev->id->num, &mtd))
2010 if (!strcmp(&argv[1][3], ".spread")) {
2011 spread_partition(mtd, p, &next_offset);
2012 debug("increased %s to %d bytes\n", p->name, p->size);
2016 dev_tmp = device_find(dev->id->type, dev->id->num);
2017 if (dev_tmp == NULL) {
2019 } else if (part_add(dev_tmp, p) != 0) {
2020 /* merge new partition with existing ones*/
2025 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2026 printf("generated mtdparts too long, resetting to null\n");
2033 /* mtdparts del part-id */
2034 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2035 debug("del: part-id = %s\n", argv[2]);
2037 return delete_partition(argv[2]);
2040 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2041 if ((argc == 2) && (strcmp(argv[1], "spread") == 0))
2042 return spread_partitions();
2043 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2045 return CMD_RET_USAGE;
2048 /***************************************************/
2050 chpart, 2, 0, do_chpart,
2051 "change active partition",
2053 " - change active partition (e.g. part-id = nand0,1)"
2056 #ifdef CONFIG_SYS_LONGHELP
2057 static char mtdparts_help_text[] =
2059 " - list partition table\n"
2061 " - delete all partitions\n"
2062 "mtdparts del part-id\n"
2063 " - delete partition (e.g. part-id = nand0,1)\n"
2064 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2065 " - add partition\n"
2066 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2067 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2068 " - add partition, padding size by skipping bad blocks\n"
2070 "mtdparts default\n"
2071 " - reset partition table to defaults\n"
2072 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2074 " - adjust the sizes of the partitions so they are\n"
2075 " at least as big as the mtdparts variable specifies\n"
2076 " and they each start on a good block\n\n"
2079 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2081 "this command uses three environment variables:\n\n"
2082 "'partition' - keeps current partition identifier\n\n"
2083 "partition := <part-id>\n"
2084 "<part-id> := <dev-id>,part_num\n\n"
2085 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2086 "mtdids=<idmap>[,<idmap>,...]\n\n"
2087 "<idmap> := <dev-id>=<mtd-id>\n"
2088 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2089 "<dev-num> := mtd device number, 0...\n"
2090 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2091 "'mtdparts' - partition list\n\n"
2092 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2093 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2094 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2095 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2096 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2097 "<offset> := partition start offset within the device\n"
2098 "<name> := '(' NAME ')'\n"
2099 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2103 mtdparts, 6, 0, do_mtdparts,
2104 "define flash/nand partitions", mtdparts_help_text
2106 /***************************************************/