]>
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 * See file CREDITS for list of people who contributed to this
27 * This program is free software; you can redistribute it and/or
28 * modify it under the terms of the GNU General Public License as
29 * published by the Free Software Foundation; either version 2 of
30 * the License, or (at your option) any later version.
32 * This program is distributed in the hope that it will be useful,
33 * but WITHOUT ANY WARRANTY; without even the implied warranty of
34 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
35 * GNU General Public License for more details.
37 * You should have received a copy of the GNU General Public License
38 * along with this program; if not, write to the Free Software
39 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
44 * Three environment variables are used by the parsing routines:
46 * 'partition' - keeps current partition identifier
48 * partition := <part-id>
49 * <part-id> := <dev-id>,part_num
52 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
54 * mtdids=<idmap>[,<idmap>,...]
56 * <idmap> := <dev-id>=<mtd-id>
57 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
58 * <dev-num> := mtd device number, 0...
59 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
62 * 'mtdparts' - partition list
64 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
66 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
67 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
68 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
69 * <size> := standard linux memsize OR '-' to denote all remaining space
70 * <offset> := partition start offset within the device
71 * <name> := '(' NAME ')'
72 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
75 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
76 * - if the above variables are not set defaults for a given target are used
80 * 1 NOR Flash, with 1 single writable partition:
81 * mtdids=nor0=edb7312-nor
82 * mtdparts=mtdparts=edb7312-nor:-
84 * 1 NOR Flash with 2 partitions, 1 NAND with one
85 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
86 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
93 #include <jffs2/load_kernel.h>
94 #include <linux/list.h>
95 #include <linux/ctype.h>
96 #include <linux/err.h>
97 #include <linux/mtd/mtd.h>
99 #if defined(CONFIG_CMD_NAND)
100 #include <linux/mtd/nand.h>
104 #if defined(CONFIG_CMD_ONENAND)
105 #include <linux/mtd/onenand.h>
106 #include <onenand_uboot.h>
109 DECLARE_GLOBAL_DATA_PTR
;
111 /* special size referring to all the remaining space in a partition */
112 #define SIZE_REMAINING 0xFFFFFFFF
114 /* special offset value, it is used when not provided by user
116 * this value is used temporarily during parsing, later such offests
117 * are recalculated */
118 #define OFFSET_NOT_SPECIFIED 0xFFFFFFFF
120 /* minimum partition size */
121 #define MIN_PART_SIZE 4096
123 /* this flag needs to be set in part_info struct mask_flags
124 * field for read-only partitions */
125 #define MTD_WRITEABLE_CMD 1
127 /* default values for mtdids and mtdparts variables */
128 #if defined(MTDIDS_DEFAULT)
129 static const char *const mtdids_default
= MTDIDS_DEFAULT
;
131 static const char *const mtdids_default
= NULL
;
134 #if defined(MTDPARTS_DEFAULT)
135 static const char *const mtdparts_default
= MTDPARTS_DEFAULT
;
137 static const char *const mtdparts_default
= NULL
;
140 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
141 #define MTDIDS_MAXLEN 128
142 #define MTDPARTS_MAXLEN 512
143 #define PARTITION_MAXLEN 16
144 static char last_ids
[MTDIDS_MAXLEN
];
145 static char last_parts
[MTDPARTS_MAXLEN
];
146 static char last_partition
[PARTITION_MAXLEN
];
148 /* low level jffs2 cache cleaning routine */
149 extern void jffs2_free_cache(struct part_info
*part
);
151 /* mtdids mapping list, filled by parse_ids() */
152 static struct list_head mtdids
;
154 /* device/partition list, parse_cmdline() parses into here */
155 static struct list_head devices
;
157 /* current active device and partition number */
158 struct mtd_device
*current_mtd_dev
= NULL
;
159 u8 current_mtd_partnum
= 0;
161 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
);
163 /* command line only routines */
164 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
);
165 static int device_del(struct mtd_device
*dev
);
168 * Parses a string into a number. The number stored at ptr is
169 * potentially suffixed with K (for kilobytes, or 1024 bytes),
170 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
171 * 1073741824). If the number is suffixed with K, M, or G, then
172 * the return value is the number multiplied by one kilobyte, one
173 * megabyte, or one gigabyte, respectively.
175 * @param ptr where parse begins
176 * @param retptr output pointer to next char after parse completes (output)
177 * @return resulting unsigned int
179 static unsigned long memsize_parse (const char *const ptr
, const char **retptr
)
181 unsigned long ret
= simple_strtoul(ptr
, (char **)retptr
, 0);
202 * Format string describing supplied size. This routine does the opposite job
203 * to memsize_parse(). Size in bytes is converted to string and if possible
204 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
206 * Note, that this routine does not check for buffer overflow, it's the caller
207 * who must assure enough space.
209 * @param buf output buffer
210 * @param size size to be converted to string
212 static void memsize_format(char *buf
, u32 size
)
214 #define SIZE_GB ((u32)1024*1024*1024)
215 #define SIZE_MB ((u32)1024*1024)
216 #define SIZE_KB ((u32)1024)
218 if ((size
% SIZE_GB
) == 0)
219 sprintf(buf
, "%ug", size
/SIZE_GB
);
220 else if ((size
% SIZE_MB
) == 0)
221 sprintf(buf
, "%um", size
/SIZE_MB
);
222 else if (size
% SIZE_KB
== 0)
223 sprintf(buf
, "%uk", size
/SIZE_KB
);
225 sprintf(buf
, "%u", size
);
229 * This routine does global indexing of all partitions. Resulting index for
230 * current partition is saved in 'mtddevnum'. Current partition name in
233 static void index_partitions(void)
236 struct part_info
*part
;
237 struct list_head
*dentry
;
238 struct mtd_device
*dev
;
240 debug("--- index partitions ---\n");
242 if (current_mtd_dev
) {
244 list_for_each(dentry
, &devices
) {
245 dev
= list_entry(dentry
, struct mtd_device
, link
);
246 if (dev
== current_mtd_dev
) {
247 mtddevnum
+= current_mtd_partnum
;
248 setenv_ulong("mtddevnum", mtddevnum
);
251 mtddevnum
+= dev
->num_parts
;
254 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
255 setenv("mtddevname", part
->name
);
257 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum
, part
->name
);
259 setenv("mtddevnum", NULL
);
260 setenv("mtddevname", NULL
);
262 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
267 * Save current device and partition in environment variable 'partition'.
269 static void current_save(void)
273 debug("--- current_save ---\n");
275 if (current_mtd_dev
) {
276 sprintf(buf
, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
277 current_mtd_dev
->id
->num
, current_mtd_partnum
);
279 setenv("partition", buf
);
280 strncpy(last_partition
, buf
, 16);
282 debug("=> partition %s\n", buf
);
284 setenv("partition", NULL
);
285 last_partition
[0] = '\0';
287 debug("=> partition NULL\n");
294 * Produce a mtd_info given a type and num.
296 * @param type mtd type
297 * @param num mtd number
298 * @param mtd a pointer to an mtd_info instance (output)
299 * @return 0 if device is valid, 1 otherwise
301 static int get_mtd_info(u8 type
, u8 num
, struct mtd_info
**mtd
)
305 sprintf(mtd_dev
, "%s%d", MTD_DEV_TYPE(type
), num
);
306 *mtd
= get_mtd_device_nm(mtd_dev
);
308 printf("Device %s not found!\n", mtd_dev
);
316 * Performs sanity check for supplied flash partition.
317 * Table of existing MTD flash devices is searched and partition device
318 * is located. Alignment with the granularity of nand erasesize is verified.
320 * @param id of the parent device
321 * @param part partition to validate
322 * @return 0 if partition is valid, 1 otherwise
324 static int part_validate_eraseblock(struct mtdids
*id
, struct part_info
*part
)
326 struct mtd_info
*mtd
= NULL
;
330 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
333 part
->sector_size
= mtd
->erasesize
;
335 if (!mtd
->numeraseregions
) {
337 * Only one eraseregion (NAND, OneNAND or uniform NOR),
338 * checking for alignment is easy here
340 if ((unsigned long)part
->offset
% mtd
->erasesize
) {
341 printf("%s%d: partition (%s) start offset"
342 "alignment incorrect\n",
343 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
347 if (part
->size
% mtd
->erasesize
) {
348 printf("%s%d: partition (%s) size alignment incorrect\n",
349 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
354 * Multiple eraseregions (non-uniform NOR),
355 * checking for alignment is more complex here
358 /* Check start alignment */
359 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
360 start
= mtd
->eraseregions
[i
].offset
;
361 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
362 if (part
->offset
== start
)
364 start
+= mtd
->eraseregions
[i
].erasesize
;
368 printf("%s%d: partition (%s) start offset alignment incorrect\n",
369 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
374 /* Check end/size alignment */
375 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
376 start
= mtd
->eraseregions
[i
].offset
;
377 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
378 if ((part
->offset
+ part
->size
) == start
)
380 start
+= mtd
->eraseregions
[i
].erasesize
;
383 /* Check last sector alignment */
384 if ((part
->offset
+ part
->size
) == start
)
387 printf("%s%d: partition (%s) size alignment incorrect\n",
388 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
400 * Performs sanity check for supplied partition. Offset and size are verified
401 * to be within valid range. Partition type is checked and either
402 * parts_validate_nor() or parts_validate_nand() is called with the argument
405 * @param id of the parent device
406 * @param part partition to validate
407 * @return 0 if partition is valid, 1 otherwise
409 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
411 if (part
->size
== SIZE_REMAINING
)
412 part
->size
= id
->size
- part
->offset
;
414 if (part
->offset
> id
->size
) {
415 printf("%s: offset %08x beyond flash size %08x\n",
416 id
->mtd_id
, part
->offset
, id
->size
);
420 if ((part
->offset
+ part
->size
) <= part
->offset
) {
421 printf("%s%d: partition (%s) size too big\n",
422 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
426 if (part
->offset
+ part
->size
> id
->size
) {
427 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
432 * Now we need to check if the partition starts and ends on
433 * sector (eraseblock) regions
435 return part_validate_eraseblock(id
, part
);
439 * Delete selected partition from the partion list of the specified device.
441 * @param dev device to delete partition from
442 * @param part partition to delete
443 * @return 0 on success, 1 otherwise
445 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
447 u8 current_save_needed
= 0;
449 /* if there is only one partition, remove whole device */
450 if (dev
->num_parts
== 1)
451 return device_del(dev
);
453 /* otherwise just delete this partition */
455 if (dev
== current_mtd_dev
) {
456 /* we are modyfing partitions for the current device,
458 struct part_info
*curr_pi
;
459 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
462 if (curr_pi
== part
) {
463 printf("current partition deleted, resetting current to 0\n");
464 current_mtd_partnum
= 0;
465 } else if (part
->offset
<= curr_pi
->offset
) {
466 current_mtd_partnum
--;
468 current_save_needed
= 1;
472 list_del(&part
->link
);
476 if (current_save_needed
> 0)
485 * Delete all partitions from parts head list, free memory.
487 * @param head list of partitions to delete
489 static void part_delall(struct list_head
*head
)
491 struct list_head
*entry
, *n
;
492 struct part_info
*part_tmp
;
494 /* clean tmp_list and free allocated memory */
495 list_for_each_safe(entry
, n
, head
) {
496 part_tmp
= list_entry(entry
, struct part_info
, link
);
504 * Add new partition to the supplied partition list. Make sure partitions are
505 * sorted by offset in ascending order.
507 * @param head list this partition is to be added to
508 * @param new partition to be added
510 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
512 struct list_head
*entry
;
513 struct part_info
*new_pi
, *curr_pi
;
515 /* link partition to parrent dev */
518 if (list_empty(&dev
->parts
)) {
519 debug("part_sort_add: list empty\n");
520 list_add(&part
->link
, &dev
->parts
);
526 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
528 /* get current partition info if we are updating current device */
530 if (dev
== current_mtd_dev
)
531 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
533 list_for_each(entry
, &dev
->parts
) {
534 struct part_info
*pi
;
536 pi
= list_entry(entry
, struct part_info
, link
);
538 /* be compliant with kernel cmdline, allow only one partition at offset zero */
539 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
540 printf("cannot add second partition at offset 0\n");
544 if (new_pi
->offset
<= pi
->offset
) {
545 list_add_tail(&part
->link
, entry
);
548 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
549 /* we are modyfing partitions for the current
550 * device, update current */
551 current_mtd_partnum
++;
560 list_add_tail(&part
->link
, &dev
->parts
);
567 * Add provided partition to the partition list of a given device.
569 * @param dev device to which partition is added
570 * @param part partition to be added
571 * @return 0 on success, 1 otherwise
573 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
575 /* verify alignment and size */
576 if (part_validate(dev
->id
, part
) != 0)
579 /* partition is ok, add it to the list */
580 if (part_sort_add(dev
, part
) != 0)
587 * Parse one partition definition, allocate memory and return pointer to this
588 * location in retpart.
590 * @param partdef pointer to the partition definition string i.e. <part-def>
591 * @param ret output pointer to next char after parse completes (output)
592 * @param retpart pointer to the allocated partition (output)
593 * @return 0 on success, 1 otherwise
595 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
597 struct part_info
*part
;
599 unsigned long offset
;
602 unsigned int mask_flags
;
609 /* fetch the partition size */
611 /* assign all remaining space to this partition */
612 debug("'-': remaining size assigned\n");
613 size
= SIZE_REMAINING
;
616 size
= memsize_parse(p
, &p
);
617 if (size
< MIN_PART_SIZE
) {
618 printf("partition size too small (%lx)\n", size
);
623 /* check for offset */
624 offset
= OFFSET_NOT_SPECIFIED
;
627 offset
= memsize_parse(p
, &p
);
630 /* now look for the name */
633 if ((p
= strchr(name
, ')')) == NULL
) {
634 printf("no closing ) found in partition name\n");
637 name_len
= p
- name
+ 1;
638 if ((name_len
- 1) == 0) {
639 printf("empty partition name\n");
644 /* 0x00000000@0x00000000 */
649 /* test for options */
651 if (strncmp(p
, "ro", 2) == 0) {
652 mask_flags
|= MTD_WRITEABLE_CMD
;
656 /* check for next partition definition */
658 if (size
== SIZE_REMAINING
) {
660 printf("no partitions allowed after a fill-up partition\n");
664 } else if ((*p
== ';') || (*p
== '\0')) {
667 printf("unexpected character '%c' at the end of partition\n", *p
);
672 /* allocate memory */
673 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
675 printf("out of memory\n");
678 memset(part
, 0, sizeof(struct part_info
) + name_len
);
680 part
->offset
= offset
;
681 part
->mask_flags
= mask_flags
;
682 part
->name
= (char *)(part
+ 1);
685 /* copy user provided name */
686 strncpy(part
->name
, name
, name_len
- 1);
689 /* auto generated name in form of size@offset */
690 sprintf(part
->name
, "0x%08lx@0x%08lx", size
, offset
);
694 part
->name
[name_len
- 1] = '\0';
695 INIT_LIST_HEAD(&part
->link
);
697 debug("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
698 part
->name
, part
->size
,
699 part
->offset
, part
->mask_flags
);
706 * Check device number to be within valid range for given device type.
708 * @param type mtd type
709 * @param num mtd number
710 * @param size a pointer to the size of the mtd device (output)
711 * @return 0 if device is valid, 1 otherwise
713 static int mtd_device_validate(u8 type
, u8 num
, u32
*size
)
715 struct mtd_info
*mtd
= NULL
;
717 if (get_mtd_info(type
, num
, &mtd
))
726 * Delete all mtd devices from a supplied devices list, free memory allocated for
727 * each device and delete all device partitions.
729 * @return 0 on success, 1 otherwise
731 static int device_delall(struct list_head
*head
)
733 struct list_head
*entry
, *n
;
734 struct mtd_device
*dev_tmp
;
736 /* clean devices list */
737 list_for_each_safe(entry
, n
, head
) {
738 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
740 part_delall(&dev_tmp
->parts
);
743 INIT_LIST_HEAD(&devices
);
749 * If provided device exists it's partitions are deleted, device is removed
750 * from device list and device memory is freed.
752 * @param dev device to be deleted
753 * @return 0 on success, 1 otherwise
755 static int device_del(struct mtd_device
*dev
)
757 part_delall(&dev
->parts
);
758 list_del(&dev
->link
);
761 if (dev
== current_mtd_dev
) {
762 /* we just deleted current device */
763 if (list_empty(&devices
)) {
764 current_mtd_dev
= NULL
;
766 /* reset first partition from first dev from the
767 * devices list as current */
768 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
769 current_mtd_partnum
= 0;
780 * Search global device list and return pointer to the device of type and num
783 * @param type device type
784 * @param num device number
785 * @return NULL if requested device does not exist
787 struct mtd_device
*device_find(u8 type
, u8 num
)
789 struct list_head
*entry
;
790 struct mtd_device
*dev_tmp
;
792 list_for_each(entry
, &devices
) {
793 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
795 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
803 * Add specified device to the global device list.
805 * @param dev device to be added
807 static void device_add(struct mtd_device
*dev
)
809 u8 current_save_needed
= 0;
811 if (list_empty(&devices
)) {
812 current_mtd_dev
= dev
;
813 current_mtd_partnum
= 0;
814 current_save_needed
= 1;
817 list_add_tail(&dev
->link
, &devices
);
819 if (current_save_needed
> 0)
826 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
827 * return pointer to the device structure.
829 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
830 * @param ret output pointer to next char after parse completes (output)
831 * @param retdev pointer to the allocated device (output)
832 * @return 0 on success, 1 otherwise
834 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
836 struct mtd_device
*dev
;
837 struct part_info
*part
;
840 unsigned int mtd_id_len
;
844 struct list_head
*entry
, *n
;
849 debug("===device_parse===\n");
858 mtd_id
= p
= mtd_dev
;
859 if (!(p
= strchr(mtd_id
, ':'))) {
860 printf("no <mtd-id> identifier\n");
863 mtd_id_len
= p
- mtd_id
+ 1;
866 /* verify if we have a valid device specified */
867 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
868 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
873 pend
= strchr(p
, ';');
875 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
876 id
->type
, MTD_DEV_TYPE(id
->type
),
877 id
->num
, id
->mtd_id
);
878 debug("parsing partitions %.*s\n", (pend
? pend
- p
: strlen(p
)), p
);
881 /* parse partitions */
885 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
886 /* if device already exists start at the end of the last partition */
887 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
888 offset
= part
->offset
+ part
->size
;
891 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
893 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
896 /* calculate offset when not specified */
897 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
898 part
->offset
= offset
;
900 offset
= part
->offset
;
902 /* verify alignment and size */
903 if (part_validate(id
, part
) != 0)
906 offset
+= part
->size
;
908 /* partition is ok, add it to the list */
909 list_add_tail(&part
->link
, &tmp_list
);
914 part_delall(&tmp_list
);
918 if (num_parts
== 0) {
919 printf("no partitions for device %s%d (%s)\n",
920 MTD_DEV_TYPE(id
->type
), id
->num
, id
->mtd_id
);
924 debug("\ntotal partitions: %d\n", num_parts
);
926 /* check for next device presence */
931 } else if (*p
== '\0') {
935 printf("unexpected character '%c' at the end of device\n", *p
);
942 /* allocate memory for mtd_device structure */
943 if ((dev
= (struct mtd_device
*)malloc(sizeof(struct mtd_device
))) == NULL
) {
944 printf("out of memory\n");
947 memset(dev
, 0, sizeof(struct mtd_device
));
949 dev
->num_parts
= 0; /* part_sort_add increments num_parts */
950 INIT_LIST_HEAD(&dev
->parts
);
951 INIT_LIST_HEAD(&dev
->link
);
953 /* move partitions from tmp_list to dev->parts */
954 list_for_each_safe(entry
, n
, &tmp_list
) {
955 part
= list_entry(entry
, struct part_info
, link
);
957 if (part_sort_add(dev
, part
) != 0) {
970 * Initialize global device list.
972 * @return 0 on success, 1 otherwise
974 static int mtd_devices_init(void)
976 last_parts
[0] = '\0';
977 current_mtd_dev
= NULL
;
980 return device_delall(&devices
);
984 * Search global mtdids list and find id of requested type and number.
986 * @return pointer to the id if it exists, NULL otherwise
988 static struct mtdids
* id_find(u8 type
, u8 num
)
990 struct list_head
*entry
;
993 list_for_each(entry
, &mtdids
) {
994 id
= list_entry(entry
, struct mtdids
, link
);
996 if ((id
->type
== type
) && (id
->num
== num
))
1004 * Search global mtdids list and find id of a requested mtd_id.
1006 * Note: first argument is not null terminated.
1008 * @param mtd_id string containing requested mtd_id
1009 * @param mtd_id_len length of supplied mtd_id
1010 * @return pointer to the id if it exists, NULL otherwise
1012 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
)
1014 struct list_head
*entry
;
1017 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1018 mtd_id_len
, mtd_id
, mtd_id_len
);
1020 list_for_each(entry
, &mtdids
) {
1021 id
= list_entry(entry
, struct mtdids
, link
);
1023 debug("entry: '%s' (len = %d)\n",
1024 id
->mtd_id
, strlen(id
->mtd_id
));
1026 if (mtd_id_len
!= strlen(id
->mtd_id
))
1028 if (strncmp(id
->mtd_id
, mtd_id
, mtd_id_len
) == 0)
1036 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1037 * return device type and number.
1039 * @param id string describing device id
1040 * @param ret_id output pointer to next char after parse completes (output)
1041 * @param dev_type parsed device type (output)
1042 * @param dev_num parsed device number (output)
1043 * @return 0 on success, 1 otherwise
1045 int mtd_id_parse(const char *id
, const char **ret_id
, u8
*dev_type
,
1051 if (strncmp(p
, "nand", 4) == 0) {
1052 *dev_type
= MTD_DEV_TYPE_NAND
;
1054 } else if (strncmp(p
, "nor", 3) == 0) {
1055 *dev_type
= MTD_DEV_TYPE_NOR
;
1057 } else if (strncmp(p
, "onenand", 7) == 0) {
1058 *dev_type
= MTD_DEV_TYPE_ONENAND
;
1061 printf("incorrect device type in %s\n", id
);
1066 printf("incorrect device number in %s\n", id
);
1070 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1077 * Process all devices and generate corresponding mtdparts string describing
1078 * all partitions on all devices.
1080 * @param buf output buffer holding generated mtdparts string (output)
1081 * @param buflen buffer size
1082 * @return 0 on success, 1 otherwise
1084 static int generate_mtdparts(char *buf
, u32 buflen
)
1086 struct list_head
*pentry
, *dentry
;
1087 struct mtd_device
*dev
;
1088 struct part_info
*part
, *prev_part
;
1091 u32 size
, offset
, len
, part_cnt
;
1092 u32 maxlen
= buflen
- 1;
1094 debug("--- generate_mtdparts ---\n");
1096 if (list_empty(&devices
)) {
1101 sprintf(p
, "mtdparts=");
1104 list_for_each(dentry
, &devices
) {
1105 dev
= list_entry(dentry
, struct mtd_device
, link
);
1108 len
= strlen(dev
->id
->mtd_id
) + 1;
1111 memcpy(p
, dev
->id
->mtd_id
, len
- 1);
1116 /* format partitions */
1119 list_for_each(pentry
, &dev
->parts
) {
1120 part
= list_entry(pentry
, struct part_info
, link
);
1122 offset
= part
->offset
;
1125 /* partition size */
1126 memsize_format(tmpbuf
, size
);
1127 len
= strlen(tmpbuf
);
1130 memcpy(p
, tmpbuf
, len
);
1135 /* add offset only when there is a gap between
1137 if ((!prev_part
&& (offset
!= 0)) ||
1138 (prev_part
&& ((prev_part
->offset
+ prev_part
->size
) != part
->offset
))) {
1140 memsize_format(tmpbuf
, offset
);
1141 len
= strlen(tmpbuf
) + 1;
1145 memcpy(p
, tmpbuf
, len
- 1);
1150 /* copy name only if user supplied */
1151 if(!part
->auto_name
) {
1152 len
= strlen(part
->name
) + 2;
1157 memcpy(p
, part
->name
, len
- 2);
1164 if (part
->mask_flags
&& MTD_WRITEABLE_CMD
) {
1173 /* print ',' separator if there are other partitions
1175 if (dev
->num_parts
> part_cnt
) {
1183 /* print ';' separator if there are other devices following */
1184 if (dentry
->next
!= &devices
) {
1192 /* we still have at least one char left, as we decremented maxlen at
1199 last_parts
[0] = '\0';
1204 * Call generate_mtdparts to process all devices and generate corresponding
1205 * mtdparts string, save it in mtdparts environment variable.
1207 * @param buf output buffer holding generated mtdparts string (output)
1208 * @param buflen buffer size
1209 * @return 0 on success, 1 otherwise
1211 static int generate_mtdparts_save(char *buf
, u32 buflen
)
1215 ret
= generate_mtdparts(buf
, buflen
);
1217 if ((buf
[0] != '\0') && (ret
== 0))
1218 setenv("mtdparts", buf
);
1220 setenv("mtdparts", NULL
);
1225 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1227 * Get the net size (w/o bad blocks) of the given partition.
1229 * @param mtd the mtd info
1230 * @param part the partition
1231 * @return the calculated net size of this partition
1233 static uint64_t net_part_size(struct mtd_info
*mtd
, struct part_info
*part
)
1235 uint64_t i
, net_size
= 0;
1237 if (!mtd
->block_isbad
)
1240 for (i
= 0; i
< part
->size
; i
+= mtd
->erasesize
) {
1241 if (!mtd
->block_isbad(mtd
, part
->offset
+ i
))
1242 net_size
+= mtd
->erasesize
;
1249 static void print_partition_table(void)
1251 struct list_head
*dentry
, *pentry
;
1252 struct part_info
*part
;
1253 struct mtd_device
*dev
;
1256 list_for_each(dentry
, &devices
) {
1257 dev
= list_entry(dentry
, struct mtd_device
, link
);
1258 /* list partitions for given device */
1260 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1261 struct mtd_info
*mtd
;
1263 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1266 printf("\ndevice %s%d <%s>, # parts = %d\n",
1267 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1268 dev
->id
->mtd_id
, dev
->num_parts
);
1269 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1271 list_for_each(pentry
, &dev
->parts
) {
1275 part
= list_entry(pentry
, struct part_info
, link
);
1276 net_size
= net_part_size(mtd
, part
);
1277 size_note
= part
->size
== net_size
? " " : " (!)";
1278 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1279 part_num
, part
->name
, part
->size
,
1280 net_size
, size_note
, part
->offset
,
1282 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1283 printf("\ndevice %s%d <%s>, # parts = %d\n",
1284 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1285 dev
->id
->mtd_id
, dev
->num_parts
);
1286 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1288 list_for_each(pentry
, &dev
->parts
) {
1289 part
= list_entry(pentry
, struct part_info
, link
);
1290 printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
1291 part_num
, part
->name
, part
->size
,
1292 part
->offset
, part
->mask_flags
);
1293 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1298 if (list_empty(&devices
))
1299 printf("no partitions defined\n");
1303 * Format and print out a partition list for each device from global device
1306 static void list_partitions(void)
1308 struct part_info
*part
;
1310 debug("\n---list_partitions---\n");
1311 print_partition_table();
1313 /* current_mtd_dev is not NULL only when we have non empty device list */
1314 if (current_mtd_dev
) {
1315 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
1317 printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
1318 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1319 current_mtd_dev
->id
->num
, current_mtd_partnum
,
1320 part
->name
, part
->size
, part
->offset
);
1322 printf("could not get current partition info\n\n");
1326 printf("\ndefaults:\n");
1327 printf("mtdids : %s\n",
1328 mtdids_default
? mtdids_default
: "none");
1330 * Using printf() here results in printbuffer overflow
1331 * if default mtdparts string is greater than console
1332 * printbuffer. Use puts() to prevent system crashes.
1335 puts(mtdparts_default
? mtdparts_default
: "none");
1340 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1341 * corresponding device and verify partition number.
1343 * @param id string describing device and partition or partition name
1344 * @param dev pointer to the requested device (output)
1345 * @param part_num verified partition number (output)
1346 * @param part pointer to requested partition (output)
1347 * @return 0 on success, 1 otherwise
1349 int find_dev_and_part(const char *id
, struct mtd_device
**dev
,
1350 u8
*part_num
, struct part_info
**part
)
1352 struct list_head
*dentry
, *pentry
;
1353 u8 type
, dnum
, pnum
;
1356 debug("--- find_dev_and_part ---\nid = %s\n", id
);
1358 list_for_each(dentry
, &devices
) {
1360 *dev
= list_entry(dentry
, struct mtd_device
, link
);
1361 list_for_each(pentry
, &(*dev
)->parts
) {
1362 *part
= list_entry(pentry
, struct part_info
, link
);
1363 if (strcmp((*part
)->name
, id
) == 0)
1374 if (mtd_id_parse(p
, &p
, &type
, &dnum
) != 0)
1377 if ((*p
++ != ',') || (*p
== '\0')) {
1378 printf("no partition number specified\n");
1381 pnum
= simple_strtoul(p
, (char **)&p
, 0);
1383 printf("unexpected trailing character '%c'\n", *p
);
1387 if ((*dev
= device_find(type
, dnum
)) == NULL
) {
1388 printf("no such device %s%d\n", MTD_DEV_TYPE(type
), dnum
);
1392 if ((*part
= mtd_part_info(*dev
, pnum
)) == NULL
) {
1393 printf("no such partition\n");
1404 * Find and delete partition. For partition id format see find_dev_and_part().
1406 * @param id string describing device and partition
1407 * @return 0 on success, 1 otherwise
1409 static int delete_partition(const char *id
)
1412 struct mtd_device
*dev
;
1413 struct part_info
*part
;
1415 if (find_dev_and_part(id
, &dev
, &pnum
, &part
) == 0) {
1417 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
1418 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
,
1419 part
->name
, part
->size
, part
->offset
);
1421 if (part_del(dev
, part
) != 0)
1424 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1425 printf("generated mtdparts too long, resetting to null\n");
1431 printf("partition %s not found\n", id
);
1435 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1437 * Increase the size of the given partition so that it's net size is at least
1438 * as large as the size member and such that the next partition would start on a
1439 * good block if it were adjacent to this partition.
1441 * @param mtd the mtd device
1442 * @param part the partition
1443 * @param next_offset pointer to the offset of the next partition after this
1444 * partition's size has been modified (output)
1446 static void spread_partition(struct mtd_info
*mtd
, struct part_info
*part
,
1447 uint64_t *next_offset
)
1449 uint64_t net_size
, padding_size
= 0;
1452 mtd_get_len_incl_bad(mtd
, part
->offset
, part
->size
, &net_size
,
1456 * Absorb bad blocks immediately following this
1457 * partition also into the partition, such that
1458 * the next partition starts with a good block.
1461 mtd_get_len_incl_bad(mtd
, part
->offset
+ net_size
,
1462 mtd
->erasesize
, &padding_size
, &truncated
);
1466 padding_size
-= mtd
->erasesize
;
1470 printf("truncated partition %s to %lld bytes\n", part
->name
,
1471 (uint64_t) net_size
+ padding_size
);
1474 part
->size
= net_size
+ padding_size
;
1475 *next_offset
= part
->offset
+ part
->size
;
1479 * Adjust all of the partition sizes, such that all partitions are at least
1480 * as big as their mtdparts environment variable sizes and they each start
1483 * @return 0 on success, 1 otherwise
1485 static int spread_partitions(void)
1487 struct list_head
*dentry
, *pentry
;
1488 struct mtd_device
*dev
;
1489 struct part_info
*part
;
1490 struct mtd_info
*mtd
;
1494 list_for_each(dentry
, &devices
) {
1495 dev
= list_entry(dentry
, struct mtd_device
, link
);
1497 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1502 list_for_each(pentry
, &dev
->parts
) {
1503 part
= list_entry(pentry
, struct part_info
, link
);
1505 debug("spread_partitions: device = %s%d, partition %d ="
1506 " (%s) 0x%08x@0x%08x\n",
1507 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1508 part_num
, part
->name
, part
->size
,
1511 if (cur_offs
> part
->offset
)
1512 part
->offset
= cur_offs
;
1514 spread_partition(mtd
, part
, &cur_offs
);
1522 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1523 printf("generated mtdparts too long, resetting to null\n");
1528 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1531 * Accept character string describing mtd partitions and call device_parse()
1532 * for each entry. Add created devices to the global devices list.
1534 * @param mtdparts string specifing mtd partitions
1535 * @return 0 on success, 1 otherwise
1537 static int parse_mtdparts(const char *const mtdparts
)
1539 const char *p
= mtdparts
;
1540 struct mtd_device
*dev
;
1542 char tmp_parts
[MTDPARTS_MAXLEN
];
1544 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p
);
1546 /* delete all devices and partitions */
1547 if (mtd_devices_init() != 0) {
1548 printf("could not initialise device list\n");
1552 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1553 if (gd
->flags
& GD_FLG_ENV_READY
) {
1554 p
= getenv("mtdparts");
1557 getenv_f("mtdparts", tmp_parts
, MTDPARTS_MAXLEN
);
1560 if (strncmp(p
, "mtdparts=", 9) != 0) {
1561 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1566 while (p
&& (*p
!= '\0')) {
1568 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1571 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1572 dev
->id
->num
, dev
->id
->mtd_id
);
1574 /* check if parsed device is already on the list */
1575 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1576 printf("device %s%d redefined, please correct mtdparts variable\n",
1577 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1581 list_add_tail(&dev
->link
, &devices
);
1585 device_delall(&devices
);
1593 * Parse provided string describing mtdids mapping (see file header for mtdids
1594 * variable format). Allocate memory for each entry and add all found entries
1595 * to the global mtdids list.
1597 * @param ids mapping string
1598 * @return 0 on success, 1 otherwise
1600 static int parse_mtdids(const char *const ids
)
1602 const char *p
= ids
;
1606 struct list_head
*entry
, *n
;
1607 struct mtdids
*id_tmp
;
1612 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids
);
1614 /* clean global mtdids list */
1615 list_for_each_safe(entry
, n
, &mtdids
) {
1616 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1617 debug("mtdids del: %d %d\n", id_tmp
->type
, id_tmp
->num
);
1622 INIT_LIST_HEAD(&mtdids
);
1624 while(p
&& (*p
!= '\0')) {
1627 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1628 if (mtd_id_parse(p
, &p
, &type
, &num
) != 0)
1632 printf("mtdids: incorrect <dev-num>\n");
1637 /* check if requested device exists */
1638 if (mtd_device_validate(type
, num
, &size
) != 0)
1641 /* locate <mtd-id> */
1643 if ((p
= strchr(mtd_id
, ',')) != NULL
) {
1644 mtd_id_len
= p
- mtd_id
+ 1;
1647 mtd_id_len
= strlen(mtd_id
) + 1;
1649 if (mtd_id_len
== 0) {
1650 printf("mtdids: no <mtd-id> identifier\n");
1654 /* check if this id is already on the list */
1655 int double_entry
= 0;
1656 list_for_each(entry
, &mtdids
) {
1657 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1658 if ((id_tmp
->type
== type
) && (id_tmp
->num
== num
)) {
1664 printf("device id %s%d redefined, please correct mtdids variable\n",
1665 MTD_DEV_TYPE(type
), num
);
1669 /* allocate mtdids structure */
1670 if (!(id
= (struct mtdids
*)malloc(sizeof(struct mtdids
) + mtd_id_len
))) {
1671 printf("out of memory\n");
1674 memset(id
, 0, sizeof(struct mtdids
) + mtd_id_len
);
1678 id
->mtd_id
= (char *)(id
+ 1);
1679 strncpy(id
->mtd_id
, mtd_id
, mtd_id_len
- 1);
1680 id
->mtd_id
[mtd_id_len
- 1] = '\0';
1681 INIT_LIST_HEAD(&id
->link
);
1683 debug("+ id %s%d\t%16d bytes\t%s\n",
1684 MTD_DEV_TYPE(id
->type
), id
->num
,
1685 id
->size
, id
->mtd_id
);
1687 list_add_tail(&id
->link
, &mtdids
);
1691 /* clean mtdids list and free allocated memory */
1692 list_for_each_safe(entry
, n
, &mtdids
) {
1693 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1704 * Parse and initialize global mtdids mapping and create global
1705 * device/partition list.
1707 * @return 0 on success, 1 otherwise
1709 int mtdparts_init(void)
1711 static int initialized
= 0;
1712 const char *ids
, *parts
;
1713 const char *current_partition
;
1715 char tmp_ep
[PARTITION_MAXLEN
];
1716 char tmp_parts
[MTDPARTS_MAXLEN
];
1718 debug("\n---mtdparts_init---\n");
1720 INIT_LIST_HEAD(&mtdids
);
1721 INIT_LIST_HEAD(&devices
);
1722 memset(last_ids
, 0, MTDIDS_MAXLEN
);
1723 memset(last_parts
, 0, MTDPARTS_MAXLEN
);
1724 memset(last_partition
, 0, PARTITION_MAXLEN
);
1729 ids
= getenv("mtdids");
1731 * The mtdparts variable tends to be long. If we need to access it
1732 * before the env is relocated, then we need to use our own stack
1733 * buffer. gd->env_buf will be too small.
1735 if (gd
->flags
& GD_FLG_ENV_READY
) {
1736 parts
= getenv("mtdparts");
1739 getenv_f("mtdparts", tmp_parts
, MTDPARTS_MAXLEN
);
1741 current_partition
= getenv("partition");
1743 /* save it for later parsing, cannot rely on current partition pointer
1744 * as 'partition' variable may be updated during init */
1746 if (current_partition
)
1747 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1749 debug("last_ids : %s\n", last_ids
);
1750 debug("env_ids : %s\n", ids
);
1751 debug("last_parts: %s\n", last_parts
);
1752 debug("env_parts : %s\n\n", parts
);
1754 debug("last_partition : %s\n", last_partition
);
1755 debug("env_partition : %s\n", current_partition
);
1757 /* if mtdids varible is empty try to use defaults */
1759 if (mtdids_default
) {
1760 debug("mtdids variable not defined, using default\n");
1761 ids
= mtdids_default
;
1762 setenv("mtdids", (char *)ids
);
1764 printf("mtdids not defined, no default present\n");
1768 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1769 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1773 /* do no try to use defaults when mtdparts variable is not defined,
1774 * just check the length */
1776 printf("mtdparts variable not set, see 'help mtdparts'\n");
1778 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1779 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1783 /* check if we have already parsed those mtdids */
1784 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1789 if (parse_mtdids(ids
) != 0) {
1794 /* ok it's good, save new ids */
1795 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1798 /* parse partitions if either mtdparts or mtdids were updated */
1799 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1800 if (parse_mtdparts(parts
) != 0)
1803 if (list_empty(&devices
)) {
1804 printf("mtdparts_init: no valid partitions\n");
1808 /* ok it's good, save new parts */
1809 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1811 /* reset first partition from first dev from the list as current */
1812 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1813 current_mtd_partnum
= 0;
1816 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1817 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1818 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1821 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1822 if (!parts
&& (last_parts
[0] != '\0'))
1823 return mtd_devices_init();
1825 /* do not process current partition if mtdparts variable is null */
1829 /* is current partition set in environment? if so, use it */
1830 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1831 struct part_info
*p
;
1832 struct mtd_device
*cdev
;
1835 debug("--- getting current partition: %s\n", tmp_ep
);
1837 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1838 current_mtd_dev
= cdev
;
1839 current_mtd_partnum
= pnum
;
1842 } else if (getenv("partition") == NULL
) {
1843 debug("no partition variable set, setting...\n");
1851 * Return pointer to the partition of a requested number from a requested
1854 * @param dev device that is to be searched for a partition
1855 * @param part_num requested partition number
1856 * @return pointer to the part_info, NULL otherwise
1858 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1860 struct list_head
*entry
;
1861 struct part_info
*part
;
1867 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1868 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1869 dev
->id
->num
, dev
->id
->mtd_id
);
1871 if (part_num
>= dev
->num_parts
) {
1872 printf("invalid partition number %d for device %s%d (%s)\n",
1873 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1874 dev
->id
->num
, dev
->id
->mtd_id
);
1878 /* locate partition number, return it */
1880 list_for_each(entry
, &dev
->parts
) {
1881 part
= list_entry(entry
, struct part_info
, link
);
1883 if (part_num
== num
++) {
1891 /***************************************************/
1892 /* U-boot commands */
1893 /***************************************************/
1894 /* command line only */
1896 * Routine implementing u-boot chpart command. Sets new current partition based
1897 * on the user supplied partition id. For partition id format see find_dev_and_part().
1899 * @param cmdtp command internal data
1900 * @param flag command flag
1901 * @param argc number of arguments supplied to the command
1902 * @param argv arguments list
1903 * @return 0 on success, 1 otherwise
1905 static int do_chpart(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1907 /* command line only */
1908 struct mtd_device
*dev
;
1909 struct part_info
*part
;
1912 if (mtdparts_init() !=0)
1916 printf("no partition id specified\n");
1920 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1923 current_mtd_dev
= dev
;
1924 current_mtd_partnum
= pnum
;
1927 printf("partition changed to %s%d,%d\n",
1928 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1934 * Routine implementing u-boot mtdparts command. Initialize/update default global
1935 * partition list and process user partition request (list, add, del).
1937 * @param cmdtp command internal data
1938 * @param flag command flag
1939 * @param argc number of arguments supplied to the command
1940 * @param argv arguments list
1941 * @return 0 on success, 1 otherwise
1943 static int do_mtdparts(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
1944 char * const argv
[])
1947 if (strcmp(argv
[1], "default") == 0) {
1948 setenv("mtdids", (char *)mtdids_default
);
1949 setenv("mtdparts", (char *)mtdparts_default
);
1950 setenv("partition", NULL
);
1954 } else if (strcmp(argv
[1], "delall") == 0) {
1955 /* this may be the first run, initialize lists if needed */
1958 setenv("mtdparts", NULL
);
1960 /* mtd_devices_init() calls current_save() */
1961 return mtd_devices_init();
1965 /* make sure we are in sync with env variables */
1966 if (mtdparts_init() != 0)
1974 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1975 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1976 #define PART_ADD_DESC_MAXLEN 64
1977 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1978 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1979 struct mtd_info
*mtd
;
1980 uint64_t next_offset
;
1983 struct mtd_device
*dev
;
1984 struct mtd_device
*dev_tmp
;
1986 struct part_info
*p
;
1988 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
1991 if ((id
= id_find(type
, num
)) == NULL
) {
1992 printf("no such device %s defined in mtdids variable\n", argv
[2]);
1996 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
1997 len
+= strlen(argv
[3]); /* size@offset */
1998 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
1999 if (argv
[5] && (strlen(argv
[5]) == 2))
2000 len
+= 2; /* 'ro' */
2002 if (len
>= PART_ADD_DESC_MAXLEN
) {
2003 printf("too long partition description\n");
2006 sprintf(tmpbuf
, "%s:%s(%s)%s",
2007 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
2008 debug("add tmpbuf: %s\n", tmpbuf
);
2010 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
2013 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
2014 dev
->id
->num
, dev
->id
->mtd_id
);
2016 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2018 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2019 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2022 if (!strcmp(&argv
[1][3], ".spread")) {
2023 spread_partition(mtd
, p
, &next_offset
);
2024 debug("increased %s to %d bytes\n", p
->name
, p
->size
);
2028 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2029 if (dev_tmp
== NULL
) {
2031 } else if (part_add(dev_tmp
, p
) != 0) {
2032 /* merge new partition with existing ones*/
2037 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2038 printf("generated mtdparts too long, resetting to null\n");
2045 /* mtdparts del part-id */
2046 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2047 debug("del: part-id = %s\n", argv
[2]);
2049 return delete_partition(argv
[2]);
2052 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2053 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2054 return spread_partitions();
2055 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2057 return CMD_RET_USAGE
;
2060 /***************************************************/
2062 chpart
, 2, 0, do_chpart
,
2063 "change active partition",
2065 " - change active partition (e.g. part-id = nand0,1)"
2068 #ifdef CONFIG_SYS_LONGHELP
2069 static char mtdparts_help_text
[] =
2071 " - list partition table\n"
2073 " - delete all partitions\n"
2074 "mtdparts del part-id\n"
2075 " - delete partition (e.g. part-id = nand0,1)\n"
2076 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2077 " - add partition\n"
2078 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2079 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2080 " - add partition, padding size by skipping bad blocks\n"
2082 "mtdparts default\n"
2083 " - reset partition table to defaults\n"
2084 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2086 " - adjust the sizes of the partitions so they are\n"
2087 " at least as big as the mtdparts variable specifies\n"
2088 " and they each start on a good block\n\n"
2091 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2093 "this command uses three environment variables:\n\n"
2094 "'partition' - keeps current partition identifier\n\n"
2095 "partition := <part-id>\n"
2096 "<part-id> := <dev-id>,part_num\n\n"
2097 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2098 "mtdids=<idmap>[,<idmap>,...]\n\n"
2099 "<idmap> := <dev-id>=<mtd-id>\n"
2100 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2101 "<dev-num> := mtd device number, 0...\n"
2102 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2103 "'mtdparts' - partition list\n\n"
2104 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2105 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2106 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2107 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2108 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2109 "<offset> := partition start offset within the device\n"
2110 "<name> := '(' NAME ')'\n"
2111 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2115 mtdparts
, 6, 0, do_mtdparts
,
2116 "define flash/nand partitions", mtdparts_help_text
2118 /***************************************************/