]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_mtdparts.c
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 sprintf(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 /***************************************************/