]>
git.ipfire.org Git - people/ms/u-boot.git/blob - cmd/mtdparts.c
a2433503c40da738925f06921084462b6c5baf4b
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 #ifdef CONFIG_MTDIDS_DEFAULT
114 #define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
116 #define MTDIDS_DEFAULT NULL
119 #if !defined(MTDPARTS_DEFAULT)
120 #ifdef CONFIG_MTDPARTS_DEFAULT
121 #define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
123 #define MTDPARTS_DEFAULT NULL
126 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
127 extern void board_mtdparts_default(const char **mtdids
, const char **mtdparts
);
129 static const char *mtdids_default
= MTDIDS_DEFAULT
;
130 static const char *mtdparts_default
= MTDPARTS_DEFAULT
;
132 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
133 #define MTDIDS_MAXLEN 128
134 #define MTDPARTS_MAXLEN 512
135 #define PARTITION_MAXLEN 16
136 static char last_ids
[MTDIDS_MAXLEN
];
137 static char last_parts
[MTDPARTS_MAXLEN
];
138 static char last_partition
[PARTITION_MAXLEN
];
140 /* low level jffs2 cache cleaning routine */
141 extern void jffs2_free_cache(struct part_info
*part
);
143 /* mtdids mapping list, filled by parse_ids() */
144 static struct list_head mtdids
;
146 /* device/partition list, parse_cmdline() parses into here */
147 static struct list_head devices
;
149 /* current active device and partition number */
150 struct mtd_device
*current_mtd_dev
= NULL
;
151 u8 current_mtd_partnum
= 0;
155 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
);
157 /* command line only routines */
158 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
);
159 static int device_del(struct mtd_device
*dev
);
162 * Parses a string into a number. The number stored at ptr is
163 * potentially suffixed with K (for kilobytes, or 1024 bytes),
164 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
165 * 1073741824). If the number is suffixed with K, M, or G, then
166 * the return value is the number multiplied by one kilobyte, one
167 * megabyte, or one gigabyte, respectively.
169 * @param ptr where parse begins
170 * @param retptr output pointer to next char after parse completes (output)
171 * @return resulting unsigned int
173 static u64
memsize_parse (const char *const ptr
, const char **retptr
)
175 u64 ret
= simple_strtoull(ptr
, (char **)retptr
, 0);
196 * Format string describing supplied size. This routine does the opposite job
197 * to memsize_parse(). Size in bytes is converted to string and if possible
198 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
200 * Note, that this routine does not check for buffer overflow, it's the caller
201 * who must assure enough space.
203 * @param buf output buffer
204 * @param size size to be converted to string
206 static void memsize_format(char *buf
, u64 size
)
208 #define SIZE_GB ((u32)1024*1024*1024)
209 #define SIZE_MB ((u32)1024*1024)
210 #define SIZE_KB ((u32)1024)
212 if ((size
% SIZE_GB
) == 0)
213 sprintf(buf
, "%llug", size
/SIZE_GB
);
214 else if ((size
% SIZE_MB
) == 0)
215 sprintf(buf
, "%llum", size
/SIZE_MB
);
216 else if (size
% SIZE_KB
== 0)
217 sprintf(buf
, "%lluk", size
/SIZE_KB
);
219 sprintf(buf
, "%llu", size
);
223 * This routine does global indexing of all partitions. Resulting index for
224 * current partition is saved in 'mtddevnum'. Current partition name in
227 static void index_partitions(void)
230 struct part_info
*part
;
231 struct list_head
*dentry
;
232 struct mtd_device
*dev
;
234 debug("--- index partitions ---\n");
236 if (current_mtd_dev
) {
238 list_for_each(dentry
, &devices
) {
239 dev
= list_entry(dentry
, struct mtd_device
, link
);
240 if (dev
== current_mtd_dev
) {
241 mtddevnum
+= current_mtd_partnum
;
242 setenv_ulong("mtddevnum", mtddevnum
);
245 mtddevnum
+= dev
->num_parts
;
248 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
249 env_set("mtddevname", part
->name
);
251 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum
, part
->name
);
253 env_set("mtddevnum", NULL
);
254 env_set("mtddevname", NULL
);
256 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
261 * Save current device and partition in environment variable 'partition'.
263 static void current_save(void)
267 debug("--- current_save ---\n");
269 if (current_mtd_dev
) {
270 sprintf(buf
, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
271 current_mtd_dev
->id
->num
, current_mtd_partnum
);
273 env_set("partition", buf
);
274 strncpy(last_partition
, buf
, 16);
276 debug("=> partition %s\n", buf
);
278 env_set("partition", NULL
);
279 last_partition
[0] = '\0';
281 debug("=> partition NULL\n");
288 * Produce a mtd_info given a type and num.
290 * @param type mtd type
291 * @param num mtd number
292 * @param mtd a pointer to an mtd_info instance (output)
293 * @return 0 if device is valid, 1 otherwise
295 static int get_mtd_info(u8 type
, u8 num
, struct mtd_info
**mtd
)
299 sprintf(mtd_dev
, "%s%d", MTD_DEV_TYPE(type
), num
);
300 *mtd
= get_mtd_device_nm(mtd_dev
);
302 printf("Device %s not found!\n", mtd_dev
);
305 put_mtd_device(*mtd
);
311 * Performs sanity check for supplied flash partition.
312 * Table of existing MTD flash devices is searched and partition device
313 * is located. Alignment with the granularity of nand erasesize is verified.
315 * @param id of the parent device
316 * @param part partition to validate
317 * @return 0 if partition is valid, 1 otherwise
319 static int part_validate_eraseblock(struct mtdids
*id
, struct part_info
*part
)
321 struct mtd_info
*mtd
= NULL
;
326 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
329 part
->sector_size
= mtd
->erasesize
;
331 if (!mtd
->numeraseregions
) {
333 * Only one eraseregion (NAND, OneNAND or uniform NOR),
334 * checking for alignment is easy here
336 offset
= part
->offset
;
337 if (do_div(offset
, mtd
->erasesize
)) {
338 printf("%s%d: partition (%s) start offset"
339 "alignment incorrect\n",
340 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
345 if (do_div(size
, mtd
->erasesize
)) {
346 printf("%s%d: partition (%s) size alignment incorrect\n",
347 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
352 * Multiple eraseregions (non-uniform NOR),
353 * checking for alignment is more complex here
356 /* Check start alignment */
357 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
358 start
= mtd
->eraseregions
[i
].offset
;
359 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
360 if (part
->offset
== start
)
362 start
+= mtd
->eraseregions
[i
].erasesize
;
366 printf("%s%d: partition (%s) start offset alignment incorrect\n",
367 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
372 /* Check end/size alignment */
373 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
374 start
= mtd
->eraseregions
[i
].offset
;
375 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
376 if ((part
->offset
+ part
->size
) == start
)
378 start
+= mtd
->eraseregions
[i
].erasesize
;
381 /* Check last sector alignment */
382 if ((part
->offset
+ part
->size
) == start
)
385 printf("%s%d: partition (%s) size alignment incorrect\n",
386 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
398 * Performs sanity check for supplied partition. Offset and size are
399 * verified to be within valid range. Partition type is checked and
400 * part_validate_eraseblock() is called with the argument of part.
402 * @param id of the parent device
403 * @param part partition to validate
404 * @return 0 if partition is valid, 1 otherwise
406 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
408 if (part
->size
== SIZE_REMAINING
)
409 part
->size
= id
->size
- part
->offset
;
411 if (part
->offset
> id
->size
) {
412 printf("%s: offset %08llx beyond flash size %08llx\n",
413 id
->mtd_id
, part
->offset
, id
->size
);
417 if ((part
->offset
+ part
->size
) <= part
->offset
) {
418 printf("%s%d: partition (%s) size too big\n",
419 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
423 if (part
->offset
+ part
->size
> id
->size
) {
424 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
429 * Now we need to check if the partition starts and ends on
430 * sector (eraseblock) regions
432 return part_validate_eraseblock(id
, part
);
436 * Delete selected partition from the partition list of the specified device.
438 * @param dev device to delete partition from
439 * @param part partition to delete
440 * @return 0 on success, 1 otherwise
442 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
444 u8 current_save_needed
= 0;
446 /* if there is only one partition, remove whole device */
447 if (dev
->num_parts
== 1)
448 return device_del(dev
);
450 /* otherwise just delete this partition */
452 if (dev
== current_mtd_dev
) {
453 /* we are modyfing partitions for the current device,
455 struct part_info
*curr_pi
;
456 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
459 if (curr_pi
== part
) {
460 printf("current partition deleted, resetting current to 0\n");
461 current_mtd_partnum
= 0;
462 } else if (part
->offset
<= curr_pi
->offset
) {
463 current_mtd_partnum
--;
465 current_save_needed
= 1;
469 list_del(&part
->link
);
473 if (current_save_needed
> 0)
482 * Delete all partitions from parts head list, free memory.
484 * @param head list of partitions to delete
486 static void part_delall(struct list_head
*head
)
488 struct list_head
*entry
, *n
;
489 struct part_info
*part_tmp
;
491 /* clean tmp_list and free allocated memory */
492 list_for_each_safe(entry
, n
, head
) {
493 part_tmp
= list_entry(entry
, struct part_info
, link
);
501 * Add new partition to the supplied partition list. Make sure partitions are
502 * sorted by offset in ascending order.
504 * @param head list this partition is to be added to
505 * @param new partition to be added
507 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
509 struct list_head
*entry
;
510 struct part_info
*new_pi
, *curr_pi
;
512 /* link partition to parrent dev */
515 if (list_empty(&dev
->parts
)) {
516 debug("part_sort_add: list empty\n");
517 list_add(&part
->link
, &dev
->parts
);
523 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
525 /* get current partition info if we are updating current device */
527 if (dev
== current_mtd_dev
)
528 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
530 list_for_each(entry
, &dev
->parts
) {
531 struct part_info
*pi
;
533 pi
= list_entry(entry
, struct part_info
, link
);
535 /* be compliant with kernel cmdline, allow only one partition at offset zero */
536 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
537 printf("cannot add second partition at offset 0\n");
541 if (new_pi
->offset
<= pi
->offset
) {
542 list_add_tail(&part
->link
, entry
);
545 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
546 /* we are modyfing partitions for the current
547 * device, update current */
548 current_mtd_partnum
++;
557 list_add_tail(&part
->link
, &dev
->parts
);
564 * Add provided partition to the partition list of a given device.
566 * @param dev device to which partition is added
567 * @param part partition to be added
568 * @return 0 on success, 1 otherwise
570 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
572 /* verify alignment and size */
573 if (part_validate(dev
->id
, part
) != 0)
576 /* partition is ok, add it to the list */
577 if (part_sort_add(dev
, part
) != 0)
584 * Parse one partition definition, allocate memory and return pointer to this
585 * location in retpart.
587 * @param partdef pointer to the partition definition string i.e. <part-def>
588 * @param ret output pointer to next char after parse completes (output)
589 * @param retpart pointer to the allocated partition (output)
590 * @return 0 on success, 1 otherwise
592 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
594 struct part_info
*part
;
599 unsigned int mask_flags
;
606 /* fetch the partition size */
608 /* assign all remaining space to this partition */
609 debug("'-': remaining size assigned\n");
610 size
= SIZE_REMAINING
;
613 size
= memsize_parse(p
, &p
);
614 if (size
< MIN_PART_SIZE
) {
615 printf("partition size too small (%llx)\n", size
);
620 /* check for offset */
621 offset
= OFFSET_NOT_SPECIFIED
;
624 offset
= memsize_parse(p
, &p
);
627 /* now look for the name */
630 if ((p
= strchr(name
, ')')) == NULL
) {
631 printf("no closing ) found in partition name\n");
634 name_len
= p
- name
+ 1;
635 if ((name_len
- 1) == 0) {
636 printf("empty partition name\n");
641 /* 0x00000000@0x00000000 */
646 /* test for options */
648 if (strncmp(p
, "ro", 2) == 0) {
649 mask_flags
|= MTD_WRITEABLE_CMD
;
653 /* check for next partition definition */
655 if (size
== SIZE_REMAINING
) {
657 printf("no partitions allowed after a fill-up partition\n");
661 } else if ((*p
== ';') || (*p
== '\0')) {
664 printf("unexpected character '%c' at the end of partition\n", *p
);
669 /* allocate memory */
670 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
672 printf("out of memory\n");
675 memset(part
, 0, sizeof(struct part_info
) + name_len
);
677 part
->offset
= offset
;
678 part
->mask_flags
= mask_flags
;
679 part
->name
= (char *)(part
+ 1);
682 /* copy user provided name */
683 strncpy(part
->name
, name
, name_len
- 1);
686 /* auto generated name in form of size@offset */
687 sprintf(part
->name
, "0x%08llx@0x%08llx", size
, offset
);
691 part
->name
[name_len
- 1] = '\0';
692 INIT_LIST_HEAD(&part
->link
);
694 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
695 part
->name
, part
->size
,
696 part
->offset
, part
->mask_flags
);
703 * Check device number to be within valid range for given device type.
705 * @param type mtd type
706 * @param num mtd number
707 * @param size a pointer to the size of the mtd device (output)
708 * @return 0 if device is valid, 1 otherwise
710 static int mtd_device_validate(u8 type
, u8 num
, u64
*size
)
712 struct mtd_info
*mtd
= NULL
;
714 if (get_mtd_info(type
, num
, &mtd
))
723 * Delete all mtd devices from a supplied devices list, free memory allocated for
724 * each device and delete all device partitions.
726 * @return 0 on success, 1 otherwise
728 static int device_delall(struct list_head
*head
)
730 struct list_head
*entry
, *n
;
731 struct mtd_device
*dev_tmp
;
733 /* clean devices list */
734 list_for_each_safe(entry
, n
, head
) {
735 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
737 part_delall(&dev_tmp
->parts
);
740 INIT_LIST_HEAD(&devices
);
746 * If provided device exists it's partitions are deleted, device is removed
747 * from device list and device memory is freed.
749 * @param dev device to be deleted
750 * @return 0 on success, 1 otherwise
752 static int device_del(struct mtd_device
*dev
)
754 part_delall(&dev
->parts
);
755 list_del(&dev
->link
);
758 if (dev
== current_mtd_dev
) {
759 /* we just deleted current device */
760 if (list_empty(&devices
)) {
761 current_mtd_dev
= NULL
;
763 /* reset first partition from first dev from the
764 * devices list as current */
765 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
766 current_mtd_partnum
= 0;
777 * Search global device list and return pointer to the device of type and num
780 * @param type device type
781 * @param num device number
782 * @return NULL if requested device does not exist
784 struct mtd_device
*device_find(u8 type
, u8 num
)
786 struct list_head
*entry
;
787 struct mtd_device
*dev_tmp
;
789 list_for_each(entry
, &devices
) {
790 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
792 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
800 * Add specified device to the global device list.
802 * @param dev device to be added
804 static void device_add(struct mtd_device
*dev
)
806 u8 current_save_needed
= 0;
808 if (list_empty(&devices
)) {
809 current_mtd_dev
= dev
;
810 current_mtd_partnum
= 0;
811 current_save_needed
= 1;
814 list_add_tail(&dev
->link
, &devices
);
816 if (current_save_needed
> 0)
823 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
824 * return pointer to the device structure.
826 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
827 * @param ret output pointer to next char after parse completes (output)
828 * @param retdev pointer to the allocated device (output)
829 * @return 0 on success, 1 otherwise
831 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
833 struct mtd_device
*dev
;
834 struct part_info
*part
;
837 unsigned int mtd_id_len
;
841 struct list_head
*entry
, *n
;
846 debug("===device_parse===\n");
855 mtd_id
= p
= mtd_dev
;
856 if (!(p
= strchr(mtd_id
, ':'))) {
857 printf("no <mtd-id> identifier\n");
860 mtd_id_len
= p
- mtd_id
+ 1;
863 /* verify if we have a valid device specified */
864 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
865 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
870 pend
= strchr(p
, ';');
872 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
873 id
->type
, MTD_DEV_TYPE(id
->type
),
874 id
->num
, id
->mtd_id
);
875 debug("parsing partitions %.*s\n", (int)(pend
? pend
- p
: strlen(p
)), p
);
878 /* parse partitions */
882 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
883 /* if device already exists start at the end of the last partition */
884 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
885 offset
= part
->offset
+ part
->size
;
888 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
890 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
893 /* calculate offset when not specified */
894 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
895 part
->offset
= offset
;
897 offset
= part
->offset
;
899 /* verify alignment and size */
900 if (part_validate(id
, part
) != 0)
903 offset
+= part
->size
;
905 /* partition is ok, add it to the list */
906 list_add_tail(&part
->link
, &tmp_list
);
911 part_delall(&tmp_list
);
915 if (num_parts
== 0) {
916 printf("no partitions for device %s%d (%s)\n",
917 MTD_DEV_TYPE(id
->type
), id
->num
, id
->mtd_id
);
921 debug("\ntotal partitions: %d\n", num_parts
);
923 /* check for next device presence */
928 } else if (*p
== '\0') {
932 printf("unexpected character '%c' at the end of device\n", *p
);
939 /* allocate memory for mtd_device structure */
940 if ((dev
= (struct mtd_device
*)malloc(sizeof(struct mtd_device
))) == NULL
) {
941 printf("out of memory\n");
944 memset(dev
, 0, sizeof(struct mtd_device
));
946 dev
->num_parts
= 0; /* part_sort_add increments num_parts */
947 INIT_LIST_HEAD(&dev
->parts
);
948 INIT_LIST_HEAD(&dev
->link
);
950 /* move partitions from tmp_list to dev->parts */
951 list_for_each_safe(entry
, n
, &tmp_list
) {
952 part
= list_entry(entry
, struct part_info
, link
);
954 if (part_sort_add(dev
, part
) != 0) {
967 * Initialize global device list.
969 * @return 0 on success, 1 otherwise
971 static int mtd_devices_init(void)
973 last_parts
[0] = '\0';
974 current_mtd_dev
= NULL
;
977 return device_delall(&devices
);
981 * Search global mtdids list and find id of requested type and number.
983 * @return pointer to the id if it exists, NULL otherwise
985 static struct mtdids
* id_find(u8 type
, u8 num
)
987 struct list_head
*entry
;
990 list_for_each(entry
, &mtdids
) {
991 id
= list_entry(entry
, struct mtdids
, link
);
993 if ((id
->type
== type
) && (id
->num
== num
))
1001 * Search global mtdids list and find id of a requested mtd_id.
1003 * Note: first argument is not null terminated.
1005 * @param mtd_id string containing requested mtd_id
1006 * @param mtd_id_len length of supplied mtd_id
1007 * @return pointer to the id if it exists, NULL otherwise
1009 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
)
1011 struct list_head
*entry
;
1014 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1015 mtd_id_len
, mtd_id
, mtd_id_len
);
1017 list_for_each(entry
, &mtdids
) {
1018 id
= list_entry(entry
, struct mtdids
, link
);
1020 debug("entry: '%s' (len = %zu)\n",
1021 id
->mtd_id
, strlen(id
->mtd_id
));
1023 if (mtd_id_len
!= strlen(id
->mtd_id
))
1025 if (strncmp(id
->mtd_id
, mtd_id
, mtd_id_len
) == 0)
1033 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1034 * return device type and number.
1036 * @param id string describing device id
1037 * @param ret_id output pointer to next char after parse completes (output)
1038 * @param dev_type parsed device type (output)
1039 * @param dev_num parsed device number (output)
1040 * @return 0 on success, 1 otherwise
1042 int mtd_id_parse(const char *id
, const char **ret_id
, u8
*dev_type
,
1048 if (strncmp(p
, "nand", 4) == 0) {
1049 *dev_type
= MTD_DEV_TYPE_NAND
;
1051 } else if (strncmp(p
, "nor", 3) == 0) {
1052 *dev_type
= MTD_DEV_TYPE_NOR
;
1054 } else if (strncmp(p
, "onenand", 7) == 0) {
1055 *dev_type
= MTD_DEV_TYPE_ONENAND
;
1058 printf("incorrect device type in %s\n", id
);
1063 printf("incorrect device number in %s\n", id
);
1067 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1074 * Process all devices and generate corresponding mtdparts string describing
1075 * all partitions on all devices.
1077 * @param buf output buffer holding generated mtdparts string (output)
1078 * @param buflen buffer size
1079 * @return 0 on success, 1 otherwise
1081 static int generate_mtdparts(char *buf
, u32 buflen
)
1083 struct list_head
*pentry
, *dentry
;
1084 struct mtd_device
*dev
;
1085 struct part_info
*part
, *prev_part
;
1090 u32 maxlen
= buflen
- 1;
1092 debug("--- generate_mtdparts ---\n");
1094 if (list_empty(&devices
)) {
1099 strcpy(p
, "mtdparts=");
1102 list_for_each(dentry
, &devices
) {
1103 dev
= list_entry(dentry
, struct mtd_device
, link
);
1106 len
= strlen(dev
->id
->mtd_id
) + 1;
1109 memcpy(p
, dev
->id
->mtd_id
, len
- 1);
1114 /* format partitions */
1117 list_for_each(pentry
, &dev
->parts
) {
1118 part
= list_entry(pentry
, struct part_info
, link
);
1120 offset
= part
->offset
;
1123 /* partition size */
1124 memsize_format(tmpbuf
, size
);
1125 len
= strlen(tmpbuf
);
1128 memcpy(p
, tmpbuf
, len
);
1133 /* add offset only when there is a gap between
1135 if ((!prev_part
&& (offset
!= 0)) ||
1136 (prev_part
&& ((prev_part
->offset
+ prev_part
->size
) != part
->offset
))) {
1138 memsize_format(tmpbuf
, offset
);
1139 len
= strlen(tmpbuf
) + 1;
1143 memcpy(p
, tmpbuf
, len
- 1);
1148 /* copy name only if user supplied */
1149 if(!part
->auto_name
) {
1150 len
= strlen(part
->name
) + 2;
1155 memcpy(p
, part
->name
, len
- 2);
1162 if (part
->mask_flags
&& MTD_WRITEABLE_CMD
) {
1171 /* print ',' separator if there are other partitions
1173 if (dev
->num_parts
> part_cnt
) {
1181 /* print ';' separator if there are other devices following */
1182 if (dentry
->next
!= &devices
) {
1190 /* we still have at least one char left, as we decremented maxlen at
1197 last_parts
[0] = '\0';
1202 * Call generate_mtdparts to process all devices and generate corresponding
1203 * mtdparts string, save it in mtdparts environment variable.
1205 * @param buf output buffer holding generated mtdparts string (output)
1206 * @param buflen buffer size
1207 * @return 0 on success, 1 otherwise
1209 static int generate_mtdparts_save(char *buf
, u32 buflen
)
1213 ret
= generate_mtdparts(buf
, buflen
);
1215 if ((buf
[0] != '\0') && (ret
== 0))
1216 env_set("mtdparts", buf
);
1218 env_set("mtdparts", NULL
);
1223 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1225 * Get the net size (w/o bad blocks) of the given partition.
1227 * @param mtd the mtd info
1228 * @param part the partition
1229 * @return the calculated net size of this partition
1231 static uint64_t net_part_size(struct mtd_info
*mtd
, struct part_info
*part
)
1233 uint64_t i
, net_size
= 0;
1235 if (!mtd
->block_isbad
)
1238 for (i
= 0; i
< part
->size
; i
+= mtd
->erasesize
) {
1239 if (!mtd
->block_isbad(mtd
, part
->offset
+ i
))
1240 net_size
+= mtd
->erasesize
;
1247 static void print_partition_table(void)
1249 struct list_head
*dentry
, *pentry
;
1250 struct part_info
*part
;
1251 struct mtd_device
*dev
;
1254 list_for_each(dentry
, &devices
) {
1255 dev
= list_entry(dentry
, struct mtd_device
, link
);
1256 /* list partitions for given device */
1258 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1259 struct mtd_info
*mtd
;
1261 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1264 printf("\ndevice %s%d <%s>, # parts = %d\n",
1265 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1266 dev
->id
->mtd_id
, dev
->num_parts
);
1267 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1269 list_for_each(pentry
, &dev
->parts
) {
1273 part
= list_entry(pentry
, struct part_info
, link
);
1274 net_size
= net_part_size(mtd
, part
);
1275 size_note
= part
->size
== net_size
? " " : " (!)";
1276 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1277 part_num
, part
->name
, part
->size
,
1278 net_size
, size_note
, part
->offset
,
1280 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1281 printf("\ndevice %s%d <%s>, # parts = %d\n",
1282 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1283 dev
->id
->mtd_id
, dev
->num_parts
);
1284 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1286 list_for_each(pentry
, &dev
->parts
) {
1287 part
= list_entry(pentry
, struct part_info
, link
);
1288 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1289 part_num
, part
->name
, part
->size
,
1290 part
->offset
, part
->mask_flags
);
1291 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1296 if (list_empty(&devices
))
1297 printf("no partitions defined\n");
1301 * Format and print out a partition list for each device from global device
1304 static void list_partitions(void)
1306 struct part_info
*part
;
1308 debug("\n---list_partitions---\n");
1309 print_partition_table();
1311 /* current_mtd_dev is not NULL only when we have non empty device list */
1312 if (current_mtd_dev
) {
1313 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
1315 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1316 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1317 current_mtd_dev
->id
->num
, current_mtd_partnum
,
1318 part
->name
, part
->size
, part
->offset
);
1320 printf("could not get current partition info\n\n");
1324 printf("\ndefaults:\n");
1325 printf("mtdids : %s\n",
1326 mtdids_default
? mtdids_default
: "none");
1328 * Using printf() here results in printbuffer overflow
1329 * if default mtdparts string is greater than console
1330 * printbuffer. Use puts() to prevent system crashes.
1333 puts(mtdparts_default
? mtdparts_default
: "none");
1338 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1339 * corresponding device and verify partition number.
1341 * @param id string describing device and partition or partition name
1342 * @param dev pointer to the requested device (output)
1343 * @param part_num verified partition number (output)
1344 * @param part pointer to requested partition (output)
1345 * @return 0 on success, 1 otherwise
1347 int find_dev_and_part(const char *id
, struct mtd_device
**dev
,
1348 u8
*part_num
, struct part_info
**part
)
1350 struct list_head
*dentry
, *pentry
;
1351 u8 type
, dnum
, pnum
;
1354 debug("--- find_dev_and_part ---\nid = %s\n", id
);
1356 list_for_each(dentry
, &devices
) {
1358 *dev
= list_entry(dentry
, struct mtd_device
, link
);
1359 list_for_each(pentry
, &(*dev
)->parts
) {
1360 *part
= list_entry(pentry
, struct part_info
, link
);
1361 if (strcmp((*part
)->name
, id
) == 0)
1372 if (mtd_id_parse(p
, &p
, &type
, &dnum
) != 0)
1375 if ((*p
++ != ',') || (*p
== '\0')) {
1376 printf("no partition number specified\n");
1379 pnum
= simple_strtoul(p
, (char **)&p
, 0);
1381 printf("unexpected trailing character '%c'\n", *p
);
1385 if ((*dev
= device_find(type
, dnum
)) == NULL
) {
1386 printf("no such device %s%d\n", MTD_DEV_TYPE(type
), dnum
);
1390 if ((*part
= mtd_part_info(*dev
, pnum
)) == NULL
) {
1391 printf("no such partition\n");
1402 * Find and delete partition. For partition id format see find_dev_and_part().
1404 * @param id string describing device and partition
1405 * @return 0 on success, 1 otherwise
1407 static int delete_partition(const char *id
)
1410 struct mtd_device
*dev
;
1411 struct part_info
*part
;
1413 if (find_dev_and_part(id
, &dev
, &pnum
, &part
) == 0) {
1415 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1416 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
,
1417 part
->name
, part
->size
, part
->offset
);
1419 if (part_del(dev
, part
) != 0)
1422 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1423 printf("generated mtdparts too long, resetting to null\n");
1429 printf("partition %s not found\n", id
);
1433 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1435 * Increase the size of the given partition so that it's net size is at least
1436 * as large as the size member and such that the next partition would start on a
1437 * good block if it were adjacent to this partition.
1439 * @param mtd the mtd device
1440 * @param part the partition
1441 * @param next_offset pointer to the offset of the next partition after this
1442 * partition's size has been modified (output)
1444 static void spread_partition(struct mtd_info
*mtd
, struct part_info
*part
,
1445 uint64_t *next_offset
)
1447 uint64_t net_size
, padding_size
= 0;
1450 mtd_get_len_incl_bad(mtd
, part
->offset
, part
->size
, &net_size
,
1454 * Absorb bad blocks immediately following this
1455 * partition also into the partition, such that
1456 * the next partition starts with a good block.
1459 mtd_get_len_incl_bad(mtd
, part
->offset
+ net_size
,
1460 mtd
->erasesize
, &padding_size
, &truncated
);
1464 padding_size
-= mtd
->erasesize
;
1468 printf("truncated partition %s to %lld bytes\n", part
->name
,
1469 (uint64_t) net_size
+ padding_size
);
1472 part
->size
= net_size
+ padding_size
;
1473 *next_offset
= part
->offset
+ part
->size
;
1477 * Adjust all of the partition sizes, such that all partitions are at least
1478 * as big as their mtdparts environment variable sizes and they each start
1481 * @return 0 on success, 1 otherwise
1483 static int spread_partitions(void)
1485 struct list_head
*dentry
, *pentry
;
1486 struct mtd_device
*dev
;
1487 struct part_info
*part
;
1488 struct mtd_info
*mtd
;
1492 list_for_each(dentry
, &devices
) {
1493 dev
= list_entry(dentry
, struct mtd_device
, link
);
1495 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1500 list_for_each(pentry
, &dev
->parts
) {
1501 part
= list_entry(pentry
, struct part_info
, link
);
1503 debug("spread_partitions: device = %s%d, partition %d ="
1504 " (%s) 0x%08llx@0x%08llx\n",
1505 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1506 part_num
, part
->name
, part
->size
,
1509 if (cur_offs
> part
->offset
)
1510 part
->offset
= cur_offs
;
1512 spread_partition(mtd
, part
, &cur_offs
);
1520 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1521 printf("generated mtdparts too long, resetting to null\n");
1526 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1529 * The mtdparts variable tends to be long. If we need to access it
1530 * before the env is relocated, then we need to use our own stack
1531 * buffer. gd->env_buf will be too small.
1533 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1534 * @return mtdparts variable string, NULL if not found
1536 static const char *getenv_mtdparts(char *buf
)
1538 if (gd
->flags
& GD_FLG_ENV_READY
)
1539 return getenv("mtdparts");
1540 if (getenv_f("mtdparts", buf
, MTDPARTS_MAXLEN
) != -1)
1546 * Accept character string describing mtd partitions and call device_parse()
1547 * for each entry. Add created devices to the global devices list.
1549 * @param mtdparts string specifing mtd partitions
1550 * @return 0 on success, 1 otherwise
1552 static int parse_mtdparts(const char *const mtdparts
)
1555 struct mtd_device
*dev
;
1557 char tmp_parts
[MTDPARTS_MAXLEN
];
1559 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts
);
1561 /* delete all devices and partitions */
1562 if (mtd_devices_init() != 0) {
1563 printf("could not initialise device list\n");
1567 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1568 p
= getenv_mtdparts(tmp_parts
);
1572 if (strncmp(p
, "mtdparts=", 9) != 0) {
1573 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1578 while (*p
!= '\0') {
1580 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1583 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1584 dev
->id
->num
, dev
->id
->mtd_id
);
1586 /* check if parsed device is already on the list */
1587 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1588 printf("device %s%d redefined, please correct mtdparts variable\n",
1589 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1593 list_add_tail(&dev
->link
, &devices
);
1597 device_delall(&devices
);
1603 * Parse provided string describing mtdids mapping (see file header for mtdids
1604 * variable format). Allocate memory for each entry and add all found entries
1605 * to the global mtdids list.
1607 * @param ids mapping string
1608 * @return 0 on success, 1 otherwise
1610 static int parse_mtdids(const char *const ids
)
1612 const char *p
= ids
;
1616 struct list_head
*entry
, *n
;
1617 struct mtdids
*id_tmp
;
1622 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids
);
1624 /* clean global mtdids list */
1625 list_for_each_safe(entry
, n
, &mtdids
) {
1626 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1627 debug("mtdids del: %d %d\n", id_tmp
->type
, id_tmp
->num
);
1632 INIT_LIST_HEAD(&mtdids
);
1634 while(p
&& (*p
!= '\0')) {
1637 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1638 if (mtd_id_parse(p
, &p
, &type
, &num
) != 0)
1642 printf("mtdids: incorrect <dev-num>\n");
1647 /* check if requested device exists */
1648 if (mtd_device_validate(type
, num
, &size
) != 0)
1651 /* locate <mtd-id> */
1653 if ((p
= strchr(mtd_id
, ',')) != NULL
) {
1654 mtd_id_len
= p
- mtd_id
+ 1;
1657 mtd_id_len
= strlen(mtd_id
) + 1;
1659 if (mtd_id_len
== 0) {
1660 printf("mtdids: no <mtd-id> identifier\n");
1664 /* check if this id is already on the list */
1665 int double_entry
= 0;
1666 list_for_each(entry
, &mtdids
) {
1667 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1668 if ((id_tmp
->type
== type
) && (id_tmp
->num
== num
)) {
1674 printf("device id %s%d redefined, please correct mtdids variable\n",
1675 MTD_DEV_TYPE(type
), num
);
1679 /* allocate mtdids structure */
1680 if (!(id
= (struct mtdids
*)malloc(sizeof(struct mtdids
) + mtd_id_len
))) {
1681 printf("out of memory\n");
1684 memset(id
, 0, sizeof(struct mtdids
) + mtd_id_len
);
1688 id
->mtd_id
= (char *)(id
+ 1);
1689 strncpy(id
->mtd_id
, mtd_id
, mtd_id_len
- 1);
1690 id
->mtd_id
[mtd_id_len
- 1] = '\0';
1691 INIT_LIST_HEAD(&id
->link
);
1693 debug("+ id %s%d\t%16lld bytes\t%s\n",
1694 MTD_DEV_TYPE(id
->type
), id
->num
,
1695 id
->size
, id
->mtd_id
);
1697 list_add_tail(&id
->link
, &mtdids
);
1701 /* clean mtdids list and free allocated memory */
1702 list_for_each_safe(entry
, n
, &mtdids
) {
1703 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1715 * Parse and initialize global mtdids mapping and create global
1716 * device/partition list.
1718 * @return 0 on success, 1 otherwise
1720 int mtdparts_init(void)
1722 static int initialized
= 0;
1723 const char *ids
, *parts
;
1724 const char *current_partition
;
1726 char tmp_ep
[PARTITION_MAXLEN
];
1727 char tmp_parts
[MTDPARTS_MAXLEN
];
1729 debug("\n---mtdparts_init---\n");
1731 INIT_LIST_HEAD(&mtdids
);
1732 INIT_LIST_HEAD(&devices
);
1733 memset(last_ids
, 0, MTDIDS_MAXLEN
);
1734 memset(last_parts
, 0, MTDPARTS_MAXLEN
);
1735 memset(last_partition
, 0, PARTITION_MAXLEN
);
1736 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1737 board_mtdparts_default(&mtdids_default
, &mtdparts_default
);
1744 ids
= getenv("mtdids");
1745 parts
= getenv_mtdparts(tmp_parts
);
1746 current_partition
= getenv("partition");
1748 /* save it for later parsing, cannot rely on current partition pointer
1749 * as 'partition' variable may be updated during init */
1751 if (current_partition
)
1752 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1754 debug("last_ids : %s\n", last_ids
);
1755 debug("env_ids : %s\n", ids
);
1756 debug("last_parts: %s\n", last_parts
);
1757 debug("env_parts : %s\n\n", parts
);
1759 debug("last_partition : %s\n", last_partition
);
1760 debug("env_partition : %s\n", current_partition
);
1762 /* if mtdids variable is empty try to use defaults */
1764 if (mtdids_default
) {
1765 debug("mtdids variable not defined, using default\n");
1766 ids
= mtdids_default
;
1767 env_set("mtdids", (char *)ids
);
1769 printf("mtdids not defined, no default present\n");
1773 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1774 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1778 /* use defaults when mtdparts variable is not defined
1779 * once mtdparts is saved environment, drop use_defaults flag */
1781 if (mtdparts_default
&& use_defaults
) {
1782 parts
= mtdparts_default
;
1783 if (env_set("mtdparts", (char *)parts
) == 0)
1786 printf("mtdparts variable not set, see 'help mtdparts'\n");
1789 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1790 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1794 /* check if we have already parsed those mtdids */
1795 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1800 if (parse_mtdids(ids
) != 0) {
1805 /* ok it's good, save new ids */
1806 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1809 /* parse partitions if either mtdparts or mtdids were updated */
1810 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1811 if (parse_mtdparts(parts
) != 0)
1814 if (list_empty(&devices
)) {
1815 printf("mtdparts_init: no valid partitions\n");
1819 /* ok it's good, save new parts */
1820 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1822 /* reset first partition from first dev from the list as current */
1823 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1824 current_mtd_partnum
= 0;
1827 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1828 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1829 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1832 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1833 if (!parts
&& (last_parts
[0] != '\0'))
1834 return mtd_devices_init();
1836 /* do not process current partition if mtdparts variable is null */
1840 /* is current partition set in environment? if so, use it */
1841 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1842 struct part_info
*p
;
1843 struct mtd_device
*cdev
;
1846 debug("--- getting current partition: %s\n", tmp_ep
);
1848 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1849 current_mtd_dev
= cdev
;
1850 current_mtd_partnum
= pnum
;
1853 } else if (getenv("partition") == NULL
) {
1854 debug("no partition variable set, setting...\n");
1862 * Return pointer to the partition of a requested number from a requested
1865 * @param dev device that is to be searched for a partition
1866 * @param part_num requested partition number
1867 * @return pointer to the part_info, NULL otherwise
1869 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1871 struct list_head
*entry
;
1872 struct part_info
*part
;
1878 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1879 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1880 dev
->id
->num
, dev
->id
->mtd_id
);
1882 if (part_num
>= dev
->num_parts
) {
1883 printf("invalid partition number %d for device %s%d (%s)\n",
1884 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1885 dev
->id
->num
, dev
->id
->mtd_id
);
1889 /* locate partition number, return it */
1891 list_for_each(entry
, &dev
->parts
) {
1892 part
= list_entry(entry
, struct part_info
, link
);
1894 if (part_num
== num
++) {
1902 /***************************************************/
1903 /* U-Boot commands */
1904 /***************************************************/
1905 /* command line only */
1907 * Routine implementing u-boot chpart command. Sets new current partition based
1908 * on the user supplied partition id. For partition id format see find_dev_and_part().
1910 * @param cmdtp command internal data
1911 * @param flag command flag
1912 * @param argc number of arguments supplied to the command
1913 * @param argv arguments list
1914 * @return 0 on success, 1 otherwise
1916 static int do_chpart(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1918 /* command line only */
1919 struct mtd_device
*dev
;
1920 struct part_info
*part
;
1923 if (mtdparts_init() !=0)
1927 printf("no partition id specified\n");
1931 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1934 current_mtd_dev
= dev
;
1935 current_mtd_partnum
= pnum
;
1938 printf("partition changed to %s%d,%d\n",
1939 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1945 * Routine implementing u-boot mtdparts command. Initialize/update default global
1946 * partition list and process user partition request (list, add, del).
1948 * @param cmdtp command internal data
1949 * @param flag command flag
1950 * @param argc number of arguments supplied to the command
1951 * @param argv arguments list
1952 * @return 0 on success, 1 otherwise
1954 static int do_mtdparts(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
1955 char * const argv
[])
1958 if (strcmp(argv
[1], "default") == 0) {
1959 env_set("mtdids", NULL
);
1960 env_set("mtdparts", NULL
);
1961 env_set("partition", NULL
);
1966 } else if (strcmp(argv
[1], "delall") == 0) {
1967 /* this may be the first run, initialize lists if needed */
1970 env_set("mtdparts", NULL
);
1972 /* mtd_devices_init() calls current_save() */
1973 return mtd_devices_init();
1977 /* make sure we are in sync with env variables */
1978 if (mtdparts_init() != 0)
1986 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1987 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1988 #define PART_ADD_DESC_MAXLEN 64
1989 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1990 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1991 struct mtd_info
*mtd
;
1992 uint64_t next_offset
;
1995 struct mtd_device
*dev
;
1996 struct mtd_device
*dev_tmp
;
1998 struct part_info
*p
;
2000 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
2003 if ((id
= id_find(type
, num
)) == NULL
) {
2004 printf("no such device %s defined in mtdids variable\n", argv
[2]);
2008 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
2009 len
+= strlen(argv
[3]); /* size@offset */
2010 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
2011 if (argv
[5] && (strlen(argv
[5]) == 2))
2012 len
+= 2; /* 'ro' */
2014 if (len
>= PART_ADD_DESC_MAXLEN
) {
2015 printf("too long partition description\n");
2018 sprintf(tmpbuf
, "%s:%s(%s)%s",
2019 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
2020 debug("add tmpbuf: %s\n", tmpbuf
);
2022 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
2025 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
2026 dev
->id
->num
, dev
->id
->mtd_id
);
2028 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2030 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2031 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2034 if (!strcmp(&argv
[1][3], ".spread")) {
2035 spread_partition(mtd
, p
, &next_offset
);
2036 debug("increased %s to %llu bytes\n", p
->name
, p
->size
);
2040 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2041 if (dev_tmp
== NULL
) {
2043 } else if (part_add(dev_tmp
, p
) != 0) {
2044 /* merge new partition with existing ones*/
2049 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2050 printf("generated mtdparts too long, resetting to null\n");
2057 /* mtdparts del part-id */
2058 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2059 debug("del: part-id = %s\n", argv
[2]);
2061 return delete_partition(argv
[2]);
2064 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2065 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2066 return spread_partitions();
2067 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2069 return CMD_RET_USAGE
;
2072 /***************************************************/
2074 chpart
, 2, 0, do_chpart
,
2075 "change active partition",
2077 " - change active partition (e.g. part-id = nand0,1)"
2080 #ifdef CONFIG_SYS_LONGHELP
2081 static char mtdparts_help_text
[] =
2083 " - list partition table\n"
2085 " - delete all partitions\n"
2086 "mtdparts del part-id\n"
2087 " - delete partition (e.g. part-id = nand0,1)\n"
2088 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2089 " - add partition\n"
2090 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2091 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2092 " - add partition, padding size by skipping bad blocks\n"
2094 "mtdparts default\n"
2095 " - reset partition table to defaults\n"
2096 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2098 " - adjust the sizes of the partitions so they are\n"
2099 " at least as big as the mtdparts variable specifies\n"
2100 " and they each start on a good block\n\n"
2103 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2105 "this command uses three environment variables:\n\n"
2106 "'partition' - keeps current partition identifier\n\n"
2107 "partition := <part-id>\n"
2108 "<part-id> := <dev-id>,part_num\n\n"
2109 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2110 "mtdids=<idmap>[,<idmap>,...]\n\n"
2111 "<idmap> := <dev-id>=<mtd-id>\n"
2112 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2113 "<dev-num> := mtd device number, 0...\n"
2114 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2115 "'mtdparts' - partition list\n\n"
2116 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2117 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2118 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2119 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2120 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2121 "<offset> := partition start offset within the device\n"
2122 "<name> := '(' NAME ')'\n"
2123 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2127 mtdparts
, 6, 0, do_mtdparts
,
2128 "define flash/nand partitions", mtdparts_help_text
2130 /***************************************************/