]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - cmd/mtdparts.c
1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
10 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
13 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
15 * Added support for reading flash partition table from environment.
16 * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
20 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
22 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
23 * Copyright 2002 SYSGO Real-Time Solutions GmbH
27 * Three environment variables are used by the parsing routines:
29 * 'partition' - keeps current partition identifier
31 * partition := <part-id>
32 * <part-id> := <dev-id>,part_num
35 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
37 * mtdids=<idmap>[,<idmap>,...]
39 * <idmap> := <dev-id>=<mtd-id>
40 * <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>
41 * <dev-num> := mtd device number, 0...
42 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
45 * 'mtdparts' - partition list
47 * mtdparts=[mtdparts=]<mtd-def>[;<mtd-def>...]
49 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
50 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
51 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
52 * <size> := standard linux memsize OR '-' to denote all remaining space
53 * <offset> := partition start offset within the device
54 * <name> := '(' NAME ')'
55 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
58 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
59 * - if the above variables are not set defaults for a given target are used
63 * 1 NOR Flash, with 1 single writable partition:
64 * mtdids=nor0=edb7312-nor
65 * mtdparts=[mtdparts=]edb7312-nor:-
67 * 1 NOR Flash with 2 partitions, 1 NAND with one
68 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
69 * mtdparts=[mtdparts=]edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
77 #include <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/rawnand.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
+ 1];
137 static char last_parts
[MTDPARTS_MAXLEN
+ 1];
138 static char last_partition
[PARTITION_MAXLEN
+ 1];
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);
199 * Format string describing supplied size. This routine does the opposite job
200 * to memsize_parse(). Size in bytes is converted to string and if possible
201 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
203 * Note, that this routine does not check for buffer overflow, it's the caller
204 * who must assure enough space.
206 * @param buf output buffer
207 * @param size size to be converted to string
209 static void memsize_format(char *buf
, u64 size
)
211 #define SIZE_GB ((u32)1024*1024*1024)
212 #define SIZE_MB ((u32)1024*1024)
213 #define SIZE_KB ((u32)1024)
215 if ((size
% SIZE_GB
) == 0)
216 sprintf(buf
, "%llug", size
/SIZE_GB
);
217 else if ((size
% SIZE_MB
) == 0)
218 sprintf(buf
, "%llum", size
/SIZE_MB
);
219 else if (size
% SIZE_KB
== 0)
220 sprintf(buf
, "%lluk", size
/SIZE_KB
);
222 sprintf(buf
, "%llu", size
);
226 * This routine does global indexing of all partitions. Resulting index for
227 * current partition is saved in 'mtddevnum'. Current partition name in
230 static void index_partitions(void)
233 struct part_info
*part
;
234 struct list_head
*dentry
;
235 struct mtd_device
*dev
;
237 debug("--- index partitions ---\n");
239 if (current_mtd_dev
) {
241 list_for_each(dentry
, &devices
) {
242 dev
= list_entry(dentry
, struct mtd_device
, link
);
243 if (dev
== current_mtd_dev
) {
244 mtddevnum
+= current_mtd_partnum
;
245 env_set_ulong("mtddevnum", mtddevnum
);
246 debug("=> mtddevnum %d,\n", mtddevnum
);
249 mtddevnum
+= dev
->num_parts
;
252 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
254 env_set("mtddevname", part
->name
);
256 debug("=> mtddevname %s\n", part
->name
);
258 env_set("mtddevname", NULL
);
260 debug("=> mtddevname NULL\n");
263 env_set("mtddevnum", NULL
);
264 env_set("mtddevname", NULL
);
266 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
271 * Save current device and partition in environment variable 'partition'.
273 static void current_save(void)
277 debug("--- current_save ---\n");
279 if (current_mtd_dev
) {
280 sprintf(buf
, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
281 current_mtd_dev
->id
->num
, current_mtd_partnum
);
283 env_set("partition", buf
);
284 strncpy(last_partition
, buf
, 16);
286 debug("=> partition %s\n", buf
);
288 env_set("partition", NULL
);
289 last_partition
[0] = '\0';
291 debug("=> partition NULL\n");
298 * Produce a mtd_info given a type and num.
300 * @param type mtd type
301 * @param num mtd number
302 * @param mtd a pointer to an mtd_info instance (output)
303 * @return 0 if device is valid, 1 otherwise
305 static int get_mtd_info(u8 type
, u8 num
, struct mtd_info
**mtd
)
309 sprintf(mtd_dev
, "%s%d", MTD_DEV_TYPE(type
), num
);
310 *mtd
= get_mtd_device_nm(mtd_dev
);
312 printf("Device %s not found!\n", mtd_dev
);
315 put_mtd_device(*mtd
);
321 * Performs sanity check for supplied flash partition.
322 * Table of existing MTD flash devices is searched and partition device
323 * is located. Alignment with the granularity of nand erasesize is verified.
325 * @param id of the parent device
326 * @param part partition to validate
327 * @return 0 if partition is valid, 1 otherwise
329 static int part_validate_eraseblock(struct mtdids
*id
, struct part_info
*part
)
331 struct mtd_info
*mtd
= NULL
;
336 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
339 part
->sector_size
= mtd
->erasesize
;
341 if (!mtd
->numeraseregions
) {
343 * Only one eraseregion (NAND, SPI-NAND, OneNAND or uniform NOR),
344 * checking for alignment is easy here
346 offset
= part
->offset
;
347 if (do_div(offset
, mtd
->erasesize
)) {
348 printf("%s%d: partition (%s) start offset"
349 "alignment incorrect\n",
350 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
355 if (do_div(size
, mtd
->erasesize
)) {
356 printf("%s%d: partition (%s) size alignment incorrect\n",
357 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
362 * Multiple eraseregions (non-uniform NOR),
363 * checking for alignment is more complex here
366 /* Check start alignment */
367 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
368 start
= mtd
->eraseregions
[i
].offset
;
369 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
370 if (part
->offset
== start
)
372 start
+= mtd
->eraseregions
[i
].erasesize
;
376 printf("%s%d: partition (%s) start offset alignment incorrect\n",
377 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
382 /* Check end/size alignment */
383 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
384 start
= mtd
->eraseregions
[i
].offset
;
385 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
386 if ((part
->offset
+ part
->size
) == start
)
388 start
+= mtd
->eraseregions
[i
].erasesize
;
391 /* Check last sector alignment */
392 if ((part
->offset
+ part
->size
) == start
)
395 printf("%s%d: partition (%s) size alignment incorrect\n",
396 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
408 * Performs sanity check for supplied partition. Offset and size are
409 * verified to be within valid range. Partition type is checked and
410 * part_validate_eraseblock() is called with the argument of part.
412 * @param id of the parent device
413 * @param part partition to validate
414 * @return 0 if partition is valid, 1 otherwise
416 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
418 if (part
->size
== SIZE_REMAINING
)
419 part
->size
= id
->size
- part
->offset
;
421 if (part
->offset
> id
->size
) {
422 printf("%s: offset %08llx beyond flash size %08llx\n",
423 id
->mtd_id
, part
->offset
, id
->size
);
427 if ((part
->offset
+ part
->size
) <= part
->offset
) {
428 printf("%s%d: partition (%s) size too big\n",
429 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
433 if (part
->offset
+ part
->size
> id
->size
) {
434 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
439 * Now we need to check if the partition starts and ends on
440 * sector (eraseblock) regions
442 return part_validate_eraseblock(id
, part
);
446 * Delete selected partition from the partition list of the specified device.
448 * @param dev device to delete partition from
449 * @param part partition to delete
450 * @return 0 on success, 1 otherwise
452 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
454 u8 current_save_needed
= 0;
456 /* if there is only one partition, remove whole device */
457 if (dev
->num_parts
== 1)
458 return device_del(dev
);
460 /* otherwise just delete this partition */
462 if (dev
== current_mtd_dev
) {
463 /* we are modyfing partitions for the current device,
465 struct part_info
*curr_pi
;
466 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
469 if (curr_pi
== part
) {
470 printf("current partition deleted, resetting current to 0\n");
471 current_mtd_partnum
= 0;
472 } else if (part
->offset
<= curr_pi
->offset
) {
473 current_mtd_partnum
--;
475 current_save_needed
= 1;
479 list_del(&part
->link
);
483 if (current_save_needed
> 0)
492 * Delete all partitions from parts head list, free memory.
494 * @param head list of partitions to delete
496 static void part_delall(struct list_head
*head
)
498 struct list_head
*entry
, *n
;
499 struct part_info
*part_tmp
;
501 /* clean tmp_list and free allocated memory */
502 list_for_each_safe(entry
, n
, head
) {
503 part_tmp
= list_entry(entry
, struct part_info
, link
);
511 * Add new partition to the supplied partition list. Make sure partitions are
512 * sorted by offset in ascending order.
514 * @param head list this partition is to be added to
515 * @param new partition to be added
517 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
519 struct list_head
*entry
;
520 struct part_info
*new_pi
, *curr_pi
;
522 /* link partition to parrent dev */
525 if (list_empty(&dev
->parts
)) {
526 debug("part_sort_add: list empty\n");
527 list_add(&part
->link
, &dev
->parts
);
533 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
535 /* get current partition info if we are updating current device */
537 if (dev
== current_mtd_dev
)
538 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
540 list_for_each(entry
, &dev
->parts
) {
541 struct part_info
*pi
;
543 pi
= list_entry(entry
, struct part_info
, link
);
545 /* be compliant with kernel cmdline, allow only one partition at offset zero */
546 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
547 printf("cannot add second partition at offset 0\n");
551 if (new_pi
->offset
<= pi
->offset
) {
552 list_add_tail(&part
->link
, entry
);
555 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
556 /* we are modyfing partitions for the current
557 * device, update current */
558 current_mtd_partnum
++;
567 list_add_tail(&part
->link
, &dev
->parts
);
574 * Add provided partition to the partition list of a given device.
576 * @param dev device to which partition is added
577 * @param part partition to be added
578 * @return 0 on success, 1 otherwise
580 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
582 /* verify alignment and size */
583 if (part_validate(dev
->id
, part
) != 0)
586 /* partition is ok, add it to the list */
587 if (part_sort_add(dev
, part
) != 0)
594 * Parse one partition definition, allocate memory and return pointer to this
595 * location in retpart.
597 * @param partdef pointer to the partition definition string i.e. <part-def>
598 * @param ret output pointer to next char after parse completes (output)
599 * @param retpart pointer to the allocated partition (output)
600 * @return 0 on success, 1 otherwise
602 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
604 struct part_info
*part
;
609 unsigned int mask_flags
;
616 /* fetch the partition size */
618 /* assign all remaining space to this partition */
619 debug("'-': remaining size assigned\n");
620 size
= SIZE_REMAINING
;
623 size
= memsize_parse(p
, &p
);
624 if (size
< MIN_PART_SIZE
) {
625 printf("partition size too small (%llx)\n", size
);
630 /* check for offset */
631 offset
= OFFSET_NOT_SPECIFIED
;
634 offset
= memsize_parse(p
, &p
);
637 /* now look for the name */
640 if ((p
= strchr(name
, ')')) == NULL
) {
641 printf("no closing ) found in partition name\n");
644 name_len
= p
- name
+ 1;
645 if ((name_len
- 1) == 0) {
646 printf("empty partition name\n");
651 /* 0x00000000@0x00000000 */
656 /* test for options */
658 if (strncmp(p
, "ro", 2) == 0) {
659 mask_flags
|= MTD_WRITEABLE_CMD
;
663 /* check for next partition definition */
665 if (size
== SIZE_REMAINING
) {
667 printf("no partitions allowed after a fill-up partition\n");
671 } else if ((*p
== ';') || (*p
== '\0')) {
674 printf("unexpected character '%c' at the end of partition\n", *p
);
679 /* allocate memory */
680 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
682 printf("out of memory\n");
685 memset(part
, 0, sizeof(struct part_info
) + name_len
);
687 part
->offset
= offset
;
688 part
->mask_flags
= mask_flags
;
689 part
->name
= (char *)(part
+ 1);
692 /* copy user provided name */
693 strncpy(part
->name
, name
, name_len
- 1);
696 /* auto generated name in form of size@offset */
697 snprintf(part
->name
, name_len
, "0x%08llx@0x%08llx", size
, offset
);
701 part
->name
[name_len
- 1] = '\0';
702 INIT_LIST_HEAD(&part
->link
);
704 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
705 part
->name
, part
->size
,
706 part
->offset
, part
->mask_flags
);
713 * Check device number to be within valid range for given device type.
715 * @param type mtd type
716 * @param num mtd number
717 * @param size a pointer to the size of the mtd device (output)
718 * @return 0 if device is valid, 1 otherwise
720 static int mtd_device_validate(u8 type
, u8 num
, u64
*size
)
722 struct mtd_info
*mtd
= NULL
;
724 if (get_mtd_info(type
, num
, &mtd
))
733 * Delete all mtd devices from a supplied devices list, free memory allocated for
734 * each device and delete all device partitions.
736 * @return 0 on success, 1 otherwise
738 static int device_delall(struct list_head
*head
)
740 struct list_head
*entry
, *n
;
741 struct mtd_device
*dev_tmp
;
743 /* clean devices list */
744 list_for_each_safe(entry
, n
, head
) {
745 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
747 part_delall(&dev_tmp
->parts
);
750 INIT_LIST_HEAD(&devices
);
756 * If provided device exists it's partitions are deleted, device is removed
757 * from device list and device memory is freed.
759 * @param dev device to be deleted
760 * @return 0 on success, 1 otherwise
762 static int device_del(struct mtd_device
*dev
)
764 part_delall(&dev
->parts
);
765 list_del(&dev
->link
);
768 if (dev
== current_mtd_dev
) {
769 /* we just deleted current device */
770 if (list_empty(&devices
)) {
771 current_mtd_dev
= NULL
;
773 /* reset first partition from first dev from the
774 * devices list as current */
775 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
776 current_mtd_partnum
= 0;
787 * Search global device list and return pointer to the device of type and num
790 * @param type device type
791 * @param num device number
792 * @return NULL if requested device does not exist
794 struct mtd_device
*device_find(u8 type
, u8 num
)
796 struct list_head
*entry
;
797 struct mtd_device
*dev_tmp
;
799 list_for_each(entry
, &devices
) {
800 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
802 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
810 * Add specified device to the global device list.
812 * @param dev device to be added
814 static void device_add(struct mtd_device
*dev
)
816 u8 current_save_needed
= 0;
818 if (list_empty(&devices
)) {
819 current_mtd_dev
= dev
;
820 current_mtd_partnum
= 0;
821 current_save_needed
= 1;
824 list_add_tail(&dev
->link
, &devices
);
826 if (current_save_needed
> 0)
833 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
834 * return pointer to the device structure.
836 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
837 * @param ret output pointer to next char after parse completes (output)
838 * @param retdev pointer to the allocated device (output)
839 * @return 0 on success, 1 otherwise
841 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
843 struct mtd_device
*dev
;
844 struct part_info
*part
;
847 unsigned int mtd_id_len
;
851 struct list_head
*entry
, *n
;
856 debug("===device_parse===\n");
865 mtd_id
= p
= mtd_dev
;
866 if (!(p
= strchr(mtd_id
, ':'))) {
867 printf("no <mtd-id> identifier\n");
870 mtd_id_len
= p
- mtd_id
+ 1;
873 /* verify if we have a valid device specified */
874 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
875 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
879 pend
= strchr(p
, ';');
880 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
881 id
->type
, MTD_DEV_TYPE(id
->type
),
882 id
->num
, id
->mtd_id
);
883 debug("parsing partitions %.*s\n", (int)(pend
? pend
- p
: strlen(p
)), p
);
885 /* parse partitions */
889 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
890 /* if device already exists start at the end of the last partition */
891 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
892 offset
= part
->offset
+ part
->size
;
895 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
897 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
900 /* calculate offset when not specified */
901 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
902 part
->offset
= offset
;
904 offset
= part
->offset
;
906 /* verify alignment and size */
907 if (part_validate(id
, part
) != 0)
910 offset
+= part
->size
;
912 /* partition is ok, add it to the list */
913 list_add_tail(&part
->link
, &tmp_list
);
918 part_delall(&tmp_list
);
922 debug("\ntotal partitions: %d\n", num_parts
);
924 /* check for next device presence */
929 } else if (*p
== '\0') {
933 printf("unexpected character '%c' at the end of device\n", *p
);
940 /* allocate memory for mtd_device structure */
941 if ((dev
= (struct mtd_device
*)malloc(sizeof(struct mtd_device
))) == NULL
) {
942 printf("out of memory\n");
945 memset(dev
, 0, sizeof(struct mtd_device
));
947 dev
->num_parts
= 0; /* part_sort_add increments num_parts */
948 INIT_LIST_HEAD(&dev
->parts
);
949 INIT_LIST_HEAD(&dev
->link
);
951 /* move partitions from tmp_list to dev->parts */
952 list_for_each_safe(entry
, n
, &tmp_list
) {
953 part
= list_entry(entry
, struct part_info
, link
);
955 if (part_sort_add(dev
, part
) != 0) {
968 * Initialize global device list.
970 * @return 0 on success, 1 otherwise
972 static int mtd_devices_init(void)
974 last_parts
[0] = '\0';
975 current_mtd_dev
= NULL
;
978 return device_delall(&devices
);
982 * Search global mtdids list and find id of requested type and number.
984 * @return pointer to the id if it exists, NULL otherwise
986 static struct mtdids
* id_find(u8 type
, u8 num
)
988 struct list_head
*entry
;
991 list_for_each(entry
, &mtdids
) {
992 id
= list_entry(entry
, struct mtdids
, link
);
994 if ((id
->type
== type
) && (id
->num
== num
))
1002 * Search global mtdids list and find id of a requested mtd_id.
1004 * Note: first argument is not null terminated.
1006 * @param mtd_id string containing requested mtd_id
1007 * @param mtd_id_len length of supplied mtd_id
1008 * @return pointer to the id if it exists, NULL otherwise
1010 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
)
1012 struct list_head
*entry
;
1015 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1016 mtd_id_len
, mtd_id
, mtd_id_len
);
1018 list_for_each(entry
, &mtdids
) {
1019 id
= list_entry(entry
, struct mtdids
, link
);
1021 debug("entry: '%s' (len = %zu)\n",
1022 id
->mtd_id
, strlen(id
->mtd_id
));
1024 if (mtd_id_len
!= strlen(id
->mtd_id
))
1026 if (strncmp(id
->mtd_id
, mtd_id
, mtd_id_len
) == 0)
1034 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>,
1035 * return device type and number.
1037 * @param id string describing device id
1038 * @param ret_id output pointer to next char after parse completes (output)
1039 * @param dev_type parsed device type (output)
1040 * @param dev_num parsed device number (output)
1041 * @return 0 on success, 1 otherwise
1043 int mtd_id_parse(const char *id
, const char **ret_id
, u8
*dev_type
,
1049 if (strncmp(p
, "nand", 4) == 0) {
1050 *dev_type
= MTD_DEV_TYPE_NAND
;
1052 } else if (strncmp(p
, "nor", 3) == 0) {
1053 *dev_type
= MTD_DEV_TYPE_NOR
;
1055 } else if (strncmp(p
, "onenand", 7) == 0) {
1056 *dev_type
= MTD_DEV_TYPE_ONENAND
;
1058 } else if (strncmp(p
, "spi-nand", 8) == 0) {
1059 *dev_type
= MTD_DEV_TYPE_SPINAND
;
1062 printf("incorrect device type in %s\n", id
);
1067 printf("incorrect device number in %s\n", id
);
1071 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1078 * Process all devices and generate corresponding mtdparts string describing
1079 * all partitions on all devices.
1081 * @param buf output buffer holding generated mtdparts string (output)
1082 * @param buflen buffer size
1083 * @return 0 on success, 1 otherwise
1085 static int generate_mtdparts(char *buf
, u32 buflen
)
1087 struct list_head
*pentry
, *dentry
;
1088 struct mtd_device
*dev
;
1089 struct part_info
*part
, *prev_part
;
1094 u32 maxlen
= buflen
- 1;
1096 debug("--- generate_mtdparts ---\n");
1098 if (list_empty(&devices
)) {
1103 list_for_each(dentry
, &devices
) {
1104 dev
= list_entry(dentry
, struct mtd_device
, link
);
1107 len
= strlen(dev
->id
->mtd_id
) + 1;
1110 memcpy(p
, dev
->id
->mtd_id
, len
- 1);
1115 /* format partitions */
1118 list_for_each(pentry
, &dev
->parts
) {
1119 part
= list_entry(pentry
, struct part_info
, link
);
1121 offset
= part
->offset
;
1124 /* partition size */
1125 memsize_format(tmpbuf
, size
);
1126 len
= strlen(tmpbuf
);
1129 memcpy(p
, tmpbuf
, len
);
1134 /* add offset only when there is a gap between
1136 if ((!prev_part
&& (offset
!= 0)) ||
1137 (prev_part
&& ((prev_part
->offset
+ prev_part
->size
) != part
->offset
))) {
1139 memsize_format(tmpbuf
, offset
);
1140 len
= strlen(tmpbuf
) + 1;
1144 memcpy(p
, tmpbuf
, len
- 1);
1149 /* copy name only if user supplied */
1150 if(!part
->auto_name
) {
1151 len
= strlen(part
->name
) + 2;
1156 memcpy(p
, part
->name
, len
- 2);
1163 if (part
->mask_flags
&& MTD_WRITEABLE_CMD
) {
1172 /* print ',' separator if there are other partitions
1174 if (dev
->num_parts
> part_cnt
) {
1182 /* print ';' separator if there are other devices following */
1183 if (dentry
->next
!= &devices
) {
1191 /* we still have at least one char left, as we decremented maxlen at
1198 last_parts
[0] = '\0';
1203 * Call generate_mtdparts to process all devices and generate corresponding
1204 * mtdparts string, save it in mtdparts environment variable.
1206 * @param buf output buffer holding generated mtdparts string (output)
1207 * @param buflen buffer size
1208 * @return 0 on success, 1 otherwise
1210 static int generate_mtdparts_save(char *buf
, u32 buflen
)
1214 ret
= generate_mtdparts(buf
, buflen
);
1216 if ((buf
[0] != '\0') && (ret
== 0))
1217 env_set("mtdparts", buf
);
1219 env_set("mtdparts", NULL
);
1224 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1226 * Get the net size (w/o bad blocks) of the given partition.
1228 * @param mtd the mtd info
1229 * @param part the partition
1230 * @return the calculated net size of this partition
1232 static uint64_t net_part_size(struct mtd_info
*mtd
, struct part_info
*part
)
1234 uint64_t i
, net_size
= 0;
1236 if (!mtd
->_block_isbad
)
1239 for (i
= 0; i
< part
->size
; i
+= mtd
->erasesize
) {
1240 if (!mtd
->_block_isbad(mtd
, part
->offset
+ i
))
1241 net_size
+= mtd
->erasesize
;
1248 static void print_partition_table(void)
1250 struct list_head
*dentry
, *pentry
;
1251 struct part_info
*part
;
1252 struct mtd_device
*dev
;
1255 list_for_each(dentry
, &devices
) {
1256 dev
= list_entry(dentry
, struct mtd_device
, link
);
1257 /* list partitions for given device */
1259 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1260 struct mtd_info
*mtd
;
1262 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1265 printf("\ndevice %s%d <%s>, # parts = %d\n",
1266 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1267 dev
->id
->mtd_id
, dev
->num_parts
);
1268 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1270 list_for_each(pentry
, &dev
->parts
) {
1274 part
= list_entry(pentry
, struct part_info
, link
);
1275 net_size
= net_part_size(mtd
, part
);
1276 size_note
= part
->size
== net_size
? " " : " (!)";
1277 printf("%2d: %-20s0x%08llx\t0x%08x%s\t0x%08llx\t%d\n",
1278 part_num
, part
->name
, part
->size
,
1279 net_size
, size_note
, part
->offset
,
1281 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1282 printf("\ndevice %s%d <%s>, # parts = %d\n",
1283 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1284 dev
->id
->mtd_id
, dev
->num_parts
);
1285 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1287 list_for_each(pentry
, &dev
->parts
) {
1288 part
= list_entry(pentry
, struct part_info
, link
);
1289 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1290 part_num
, part
->name
, part
->size
,
1291 part
->offset
, part
->mask_flags
);
1292 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1297 if (list_empty(&devices
))
1298 printf("no partitions defined\n");
1302 * Format and print out a partition list for each device from global device
1305 static void list_partitions(void)
1307 struct part_info
*part
;
1309 debug("\n---list_partitions---\n");
1310 print_partition_table();
1312 /* current_mtd_dev is not NULL only when we have non empty device list */
1313 if (current_mtd_dev
) {
1314 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
1316 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1317 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1318 current_mtd_dev
->id
->num
, current_mtd_partnum
,
1319 part
->name
, part
->size
, part
->offset
);
1321 printf("could not get current partition info\n\n");
1325 printf("\ndefaults:\n");
1326 printf("mtdids : %s\n",
1327 mtdids_default
? mtdids_default
: "none");
1329 * Using printf() here results in printbuffer overflow
1330 * if default mtdparts string is greater than console
1331 * printbuffer. Use puts() to prevent system crashes.
1334 puts(mtdparts_default
? mtdparts_default
: "none");
1339 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1340 * corresponding device and verify partition number.
1342 * @param id string describing device and partition or partition name
1343 * @param dev pointer to the requested device (output)
1344 * @param part_num verified partition number (output)
1345 * @param part pointer to requested partition (output)
1346 * @return 0 on success, 1 otherwise
1348 int find_dev_and_part(const char *id
, struct mtd_device
**dev
,
1349 u8
*part_num
, struct part_info
**part
)
1351 struct list_head
*dentry
, *pentry
;
1352 u8 type
, dnum
, pnum
;
1355 debug("--- find_dev_and_part ---\nid = %s\n", id
);
1357 list_for_each(dentry
, &devices
) {
1359 *dev
= list_entry(dentry
, struct mtd_device
, link
);
1360 list_for_each(pentry
, &(*dev
)->parts
) {
1361 *part
= list_entry(pentry
, struct part_info
, link
);
1362 if (strcmp((*part
)->name
, id
) == 0)
1373 if (mtd_id_parse(p
, &p
, &type
, &dnum
) != 0)
1376 if ((*p
++ != ',') || (*p
== '\0')) {
1377 printf("no partition number specified\n");
1380 pnum
= simple_strtoul(p
, (char **)&p
, 0);
1382 printf("unexpected trailing character '%c'\n", *p
);
1386 if ((*dev
= device_find(type
, dnum
)) == NULL
) {
1387 printf("no such device %s%d\n", MTD_DEV_TYPE(type
), dnum
);
1391 if ((*part
= mtd_part_info(*dev
, pnum
)) == NULL
) {
1392 printf("no such partition\n");
1403 * Find and delete partition. For partition id format see find_dev_and_part().
1405 * @param id string describing device and partition
1406 * @return 0 on success, 1 otherwise
1408 static int delete_partition(const char *id
)
1411 struct mtd_device
*dev
;
1412 struct part_info
*part
;
1414 if (find_dev_and_part(id
, &dev
, &pnum
, &part
) == 0) {
1416 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1417 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
,
1418 part
->name
, part
->size
, part
->offset
);
1420 if (part_del(dev
, part
) != 0)
1423 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1424 printf("generated mtdparts too long, resetting to null\n");
1430 printf("partition %s not found\n", id
);
1434 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1436 * Increase the size of the given partition so that it's net size is at least
1437 * as large as the size member and such that the next partition would start on a
1438 * good block if it were adjacent to this partition.
1440 * @param mtd the mtd device
1441 * @param part the partition
1442 * @param next_offset pointer to the offset of the next partition after this
1443 * partition's size has been modified (output)
1445 static void spread_partition(struct mtd_info
*mtd
, struct part_info
*part
,
1446 uint64_t *next_offset
)
1448 uint64_t net_size
, padding_size
= 0;
1451 mtd_get_len_incl_bad(mtd
, part
->offset
, part
->size
, &net_size
,
1455 * Absorb bad blocks immediately following this
1456 * partition also into the partition, such that
1457 * the next partition starts with a good block.
1460 mtd_get_len_incl_bad(mtd
, part
->offset
+ net_size
,
1461 mtd
->erasesize
, &padding_size
, &truncated
);
1465 padding_size
-= mtd
->erasesize
;
1469 printf("truncated partition %s to %lld bytes\n", part
->name
,
1470 (uint64_t) net_size
+ padding_size
);
1473 part
->size
= net_size
+ padding_size
;
1474 *next_offset
= part
->offset
+ part
->size
;
1478 * Adjust all of the partition sizes, such that all partitions are at least
1479 * as big as their mtdparts environment variable sizes and they each start
1482 * @return 0 on success, 1 otherwise
1484 static int spread_partitions(void)
1486 struct list_head
*dentry
, *pentry
;
1487 struct mtd_device
*dev
;
1488 struct part_info
*part
;
1489 struct mtd_info
*mtd
;
1493 list_for_each(dentry
, &devices
) {
1494 dev
= list_entry(dentry
, struct mtd_device
, link
);
1496 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1501 list_for_each(pentry
, &dev
->parts
) {
1502 part
= list_entry(pentry
, struct part_info
, link
);
1504 debug("spread_partitions: device = %s%d, partition %d ="
1505 " (%s) 0x%08llx@0x%08llx\n",
1506 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1507 part_num
, part
->name
, part
->size
,
1510 if (cur_offs
> part
->offset
)
1511 part
->offset
= cur_offs
;
1513 spread_partition(mtd
, part
, &cur_offs
);
1521 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1522 printf("generated mtdparts too long, resetting to null\n");
1527 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1530 * The mtdparts variable tends to be long. If we need to access it
1531 * before the env is relocated, then we need to use our own stack
1532 * buffer. gd->env_buf will be too small.
1534 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1535 * @return mtdparts variable string, NULL if not found
1537 static const char *env_get_mtdparts(char *buf
)
1539 if (gd
->flags
& GD_FLG_ENV_READY
)
1540 return env_get("mtdparts");
1541 if (env_get_f("mtdparts", buf
, MTDPARTS_MAXLEN
) != -1)
1547 * Accept character string describing mtd partitions and call device_parse()
1548 * for each entry. Add created devices to the global devices list.
1550 * @param mtdparts string specifing mtd partitions
1551 * @return 0 on success, 1 otherwise
1553 static int parse_mtdparts(const char *const mtdparts
)
1556 struct mtd_device
*dev
;
1558 char tmp_parts
[MTDPARTS_MAXLEN
];
1560 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts
);
1562 /* delete all devices and partitions */
1563 if (mtd_devices_init() != 0) {
1564 printf("could not initialise device list\n");
1568 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1569 p
= env_get_mtdparts(tmp_parts
);
1573 /* Skip the useless prefix, if any */
1574 if (strncmp(p
, "mtdparts=", 9) == 0)
1577 while (*p
!= '\0') {
1579 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1582 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1583 dev
->id
->num
, dev
->id
->mtd_id
);
1585 /* check if parsed device is already on the list */
1586 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1587 printf("device %s%d redefined, please correct mtdparts variable\n",
1588 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1592 list_add_tail(&dev
->link
, &devices
);
1597 device_delall(&devices
);
1604 * Parse provided string describing mtdids mapping (see file header for mtdids
1605 * variable format). Allocate memory for each entry and add all found entries
1606 * to the global mtdids list.
1608 * @param ids mapping string
1609 * @return 0 on success, 1 otherwise
1611 static int parse_mtdids(const char *const ids
)
1613 const char *p
= ids
;
1617 struct list_head
*entry
, *n
;
1618 struct mtdids
*id_tmp
;
1623 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids
);
1625 /* clean global mtdids list */
1626 list_for_each_safe(entry
, n
, &mtdids
) {
1627 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1628 debug("mtdids del: %d %d\n", id_tmp
->type
, id_tmp
->num
);
1633 INIT_LIST_HEAD(&mtdids
);
1635 while(p
&& (*p
!= '\0')) {
1638 /* parse 'nor'|'nand'|'onenand'|'spi-nand'<dev-num> */
1639 if (mtd_id_parse(p
, &p
, &type
, &num
) != 0)
1643 printf("mtdids: incorrect <dev-num>\n");
1648 /* check if requested device exists */
1649 if (mtd_device_validate(type
, num
, &size
) != 0)
1652 /* locate <mtd-id> */
1654 if ((p
= strchr(mtd_id
, ',')) != NULL
) {
1655 mtd_id_len
= p
- mtd_id
+ 1;
1658 mtd_id_len
= strlen(mtd_id
) + 1;
1660 if (mtd_id_len
== 0) {
1661 printf("mtdids: no <mtd-id> identifier\n");
1665 /* check if this id is already on the list */
1666 int double_entry
= 0;
1667 list_for_each(entry
, &mtdids
) {
1668 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1669 if ((id_tmp
->type
== type
) && (id_tmp
->num
== num
)) {
1675 printf("device id %s%d redefined, please correct mtdids variable\n",
1676 MTD_DEV_TYPE(type
), num
);
1680 /* allocate mtdids structure */
1681 if (!(id
= (struct mtdids
*)malloc(sizeof(struct mtdids
) + mtd_id_len
))) {
1682 printf("out of memory\n");
1685 memset(id
, 0, sizeof(struct mtdids
) + mtd_id_len
);
1689 id
->mtd_id
= (char *)(id
+ 1);
1690 strncpy(id
->mtd_id
, mtd_id
, mtd_id_len
- 1);
1691 id
->mtd_id
[mtd_id_len
- 1] = '\0';
1692 INIT_LIST_HEAD(&id
->link
);
1694 debug("+ id %s%d\t%16lld bytes\t%s\n",
1695 MTD_DEV_TYPE(id
->type
), id
->num
,
1696 id
->size
, id
->mtd_id
);
1698 list_add_tail(&id
->link
, &mtdids
);
1702 /* clean mtdids list and free allocated memory */
1703 list_for_each_safe(entry
, n
, &mtdids
) {
1704 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1716 * Parse and initialize global mtdids mapping and create global
1717 * device/partition list.
1719 * @return 0 on success, 1 otherwise
1721 int mtdparts_init(void)
1723 static int initialized
= 0;
1724 const char *ids
, *parts
;
1725 const char *current_partition
;
1727 char tmp_ep
[PARTITION_MAXLEN
+ 1];
1728 char tmp_parts
[MTDPARTS_MAXLEN
];
1730 debug("\n---mtdparts_init---\n");
1732 INIT_LIST_HEAD(&mtdids
);
1733 INIT_LIST_HEAD(&devices
);
1734 memset(last_ids
, 0, sizeof(last_ids
));
1735 memset(last_parts
, 0, sizeof(last_parts
));
1736 memset(last_partition
, 0, sizeof(last_partition
));
1737 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1738 board_mtdparts_default(&mtdids_default
, &mtdparts_default
);
1745 ids
= env_get("mtdids");
1746 parts
= env_get_mtdparts(tmp_parts
);
1747 current_partition
= env_get("partition");
1749 /* save it for later parsing, cannot rely on current partition pointer
1750 * as 'partition' variable may be updated during init */
1751 memset(tmp_parts
, 0, sizeof(tmp_parts
));
1752 memset(tmp_ep
, 0, sizeof(tmp_ep
));
1753 if (current_partition
)
1754 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1756 debug("last_ids : %s\n", last_ids
);
1757 debug("env_ids : %s\n", ids
);
1758 debug("last_parts: %s\n", last_parts
);
1759 debug("env_parts : %s\n\n", parts
);
1761 debug("last_partition : %s\n", last_partition
);
1762 debug("env_partition : %s\n", current_partition
);
1764 /* if mtdids variable is empty try to use defaults */
1766 if (mtdids_default
) {
1767 debug("mtdids variable not defined, using default\n");
1768 ids
= mtdids_default
;
1769 env_set("mtdids", (char *)ids
);
1771 printf("mtdids not defined, no default present\n");
1775 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1776 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1780 /* use defaults when mtdparts variable is not defined
1781 * once mtdparts is saved environment, drop use_defaults flag */
1783 if (mtdparts_default
&& use_defaults
) {
1784 parts
= mtdparts_default
;
1785 if (env_set("mtdparts", (char *)parts
) == 0)
1788 printf("mtdparts variable not set, see 'help mtdparts'\n");
1791 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1792 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1796 /* check if we have already parsed those mtdids */
1797 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1802 if (parse_mtdids(ids
) != 0) {
1807 /* ok it's good, save new ids */
1808 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1811 /* parse partitions if either mtdparts or mtdids were updated */
1812 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1813 if (parse_mtdparts(parts
) != 0)
1816 if (list_empty(&devices
)) {
1817 printf("mtdparts_init: no valid partitions\n");
1821 /* ok it's good, save new parts */
1822 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1824 /* reset first partition from first dev from the list as current */
1825 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1826 current_mtd_partnum
= 0;
1829 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1830 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1831 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1834 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1835 if (!parts
&& (last_parts
[0] != '\0'))
1836 return mtd_devices_init();
1838 /* do not process current partition if mtdparts variable is null */
1842 /* is current partition set in environment? if so, use it */
1843 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1844 struct part_info
*p
;
1845 struct mtd_device
*cdev
;
1848 debug("--- getting current partition: %s\n", tmp_ep
);
1850 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1851 current_mtd_dev
= cdev
;
1852 current_mtd_partnum
= pnum
;
1855 } else if (env_get("partition") == NULL
) {
1856 debug("no partition variable set, setting...\n");
1864 * Return pointer to the partition of a requested number from a requested
1867 * @param dev device that is to be searched for a partition
1868 * @param part_num requested partition number
1869 * @return pointer to the part_info, NULL otherwise
1871 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1873 struct list_head
*entry
;
1874 struct part_info
*part
;
1880 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1881 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1882 dev
->id
->num
, dev
->id
->mtd_id
);
1884 if (part_num
>= dev
->num_parts
) {
1885 printf("invalid partition number %d for device %s%d (%s)\n",
1886 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1887 dev
->id
->num
, dev
->id
->mtd_id
);
1891 /* locate partition number, return it */
1893 list_for_each(entry
, &dev
->parts
) {
1894 part
= list_entry(entry
, struct part_info
, link
);
1896 if (part_num
== num
++) {
1904 /***************************************************/
1905 /* U-Boot commands */
1906 /***************************************************/
1907 /* command line only */
1909 * Routine implementing u-boot chpart command. Sets new current partition based
1910 * on the user supplied partition id. For partition id format see find_dev_and_part().
1912 * @param cmdtp command internal data
1913 * @param flag command flag
1914 * @param argc number of arguments supplied to the command
1915 * @param argv arguments list
1916 * @return 0 on success, 1 otherwise
1918 static int do_chpart(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1920 /* command line only */
1921 struct mtd_device
*dev
;
1922 struct part_info
*part
;
1925 if (mtdparts_init() !=0)
1929 printf("no partition id specified\n");
1933 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1936 current_mtd_dev
= dev
;
1937 current_mtd_partnum
= pnum
;
1940 printf("partition changed to %s%d,%d\n",
1941 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1947 * Routine implementing u-boot mtdparts command. Initialize/update default global
1948 * partition list and process user partition request (list, add, del).
1950 * @param cmdtp command internal data
1951 * @param flag command flag
1952 * @param argc number of arguments supplied to the command
1953 * @param argv arguments list
1954 * @return 0 on success, 1 otherwise
1956 static int do_mtdparts(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
1957 char * const argv
[])
1960 if (strcmp(argv
[1], "default") == 0) {
1961 env_set("mtdids", NULL
);
1962 env_set("mtdparts", NULL
);
1963 env_set("partition", NULL
);
1968 } else if (strcmp(argv
[1], "delall") == 0) {
1969 /* this may be the first run, initialize lists if needed */
1972 env_set("mtdparts", NULL
);
1974 /* mtd_devices_init() calls current_save() */
1975 return mtd_devices_init();
1979 /* make sure we are in sync with env variables */
1980 if (mtdparts_init() != 0)
1988 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1989 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1990 #define PART_ADD_DESC_MAXLEN 64
1991 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1992 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1993 struct mtd_info
*mtd
;
1994 uint64_t next_offset
;
1997 struct mtd_device
*dev
;
1998 struct mtd_device
*dev_tmp
;
2000 struct part_info
*p
;
2002 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
2005 if ((id
= id_find(type
, num
)) == NULL
) {
2006 printf("no such device %s defined in mtdids variable\n", argv
[2]);
2010 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
2011 len
+= strlen(argv
[3]); /* size@offset */
2012 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
2013 if (argv
[5] && (strlen(argv
[5]) == 2))
2014 len
+= 2; /* 'ro' */
2016 if (len
>= PART_ADD_DESC_MAXLEN
) {
2017 printf("too long partition description\n");
2020 sprintf(tmpbuf
, "%s:%s(%s)%s",
2021 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
2022 debug("add tmpbuf: %s\n", tmpbuf
);
2024 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
2027 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
2028 dev
->id
->num
, dev
->id
->mtd_id
);
2030 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2032 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2033 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2036 if (!strcmp(&argv
[1][3], ".spread")) {
2037 spread_partition(mtd
, p
, &next_offset
);
2038 debug("increased %s to %llu bytes\n", p
->name
, p
->size
);
2042 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2043 if (dev_tmp
== NULL
) {
2045 } else if (part_add(dev_tmp
, p
) != 0) {
2046 /* merge new partition with existing ones*/
2051 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2052 printf("generated mtdparts too long, resetting to null\n");
2059 /* mtdparts del part-id */
2060 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2061 debug("del: part-id = %s\n", argv
[2]);
2063 return delete_partition(argv
[2]);
2066 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2067 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2068 return spread_partitions();
2069 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2071 return CMD_RET_USAGE
;
2074 /***************************************************/
2076 chpart
, 2, 0, do_chpart
,
2077 "change active partition",
2079 " - change active partition (e.g. part-id = nand0,1)"
2082 #ifdef CONFIG_SYS_LONGHELP
2083 static char mtdparts_help_text
[] =
2085 " - list partition table\n"
2087 " - delete all partitions\n"
2088 "mtdparts del part-id\n"
2089 " - delete partition (e.g. part-id = nand0,1)\n"
2090 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2091 " - add partition\n"
2092 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2093 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2094 " - add partition, padding size by skipping bad blocks\n"
2096 "mtdparts default\n"
2097 " - reset partition table to defaults\n"
2098 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2100 " - adjust the sizes of the partitions so they are\n"
2101 " at least as big as the mtdparts variable specifies\n"
2102 " and they each start on a good block\n\n"
2105 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2107 "this command uses three environment variables:\n\n"
2108 "'partition' - keeps current partition identifier\n\n"
2109 "partition := <part-id>\n"
2110 "<part-id> := <dev-id>,part_num\n\n"
2111 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2112 "mtdids=<idmap>[,<idmap>,...]\n\n"
2113 "<idmap> := <dev-id>=<mtd-id>\n"
2114 "<dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>\n"
2115 "<dev-num> := mtd device number, 0...\n"
2116 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2117 "'mtdparts' - partition list\n\n"
2118 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2119 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2120 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2121 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2122 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2123 "<offset> := partition start offset within the device\n"
2124 "<name> := '(' NAME ')'\n"
2125 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2129 mtdparts
, 6, 0, do_mtdparts
,
2130 "define flash/nand partitions", mtdparts_help_text
2132 /***************************************************/