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)
76 #include <jffs2/load_kernel.h>
77 #include <linux/list.h>
78 #include <linux/ctype.h>
79 #include <linux/err.h>
80 #include <linux/mtd/mtd.h>
82 #if defined(CONFIG_CMD_NAND)
83 #include <linux/mtd/rawnand.h>
87 #if defined(CONFIG_CMD_ONENAND)
88 #include <linux/mtd/onenand.h>
89 #include <onenand_uboot.h>
92 DECLARE_GLOBAL_DATA_PTR
;
94 /* special size referring to all the remaining space in a partition */
95 #define SIZE_REMAINING (~0llu)
97 /* special offset value, it is used when not provided by user
99 * this value is used temporarily during parsing, later such offests
100 * are recalculated */
101 #define OFFSET_NOT_SPECIFIED (~0llu)
103 /* minimum partition size */
104 #define MIN_PART_SIZE 4096
106 /* this flag needs to be set in part_info struct mask_flags
107 * field for read-only partitions */
108 #define MTD_WRITEABLE_CMD 1
110 /* default values for mtdids and mtdparts variables */
111 #if !defined(MTDIDS_DEFAULT)
112 #ifdef CONFIG_MTDIDS_DEFAULT
113 #define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
115 #define MTDIDS_DEFAULT NULL
118 #if !defined(MTDPARTS_DEFAULT)
119 #ifdef CONFIG_MTDPARTS_DEFAULT
120 #define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
122 #define MTDPARTS_DEFAULT NULL
125 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
126 extern void board_mtdparts_default(const char **mtdids
, const char **mtdparts
);
128 static const char *mtdids_default
= MTDIDS_DEFAULT
;
129 static const char *mtdparts_default
= MTDPARTS_DEFAULT
;
131 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
132 #define MTDIDS_MAXLEN 128
133 #define MTDPARTS_MAXLEN 512
134 #define PARTITION_MAXLEN 16
135 static char last_ids
[MTDIDS_MAXLEN
+ 1];
136 static char last_parts
[MTDPARTS_MAXLEN
+ 1];
137 static char last_partition
[PARTITION_MAXLEN
+ 1];
139 /* low level jffs2 cache cleaning routine */
140 extern void jffs2_free_cache(struct part_info
*part
);
142 /* mtdids mapping list, filled by parse_ids() */
143 static struct list_head mtdids
;
145 /* device/partition list, parse_cmdline() parses into here */
146 static struct list_head devices
;
148 /* current active device and partition number */
149 struct mtd_device
*current_mtd_dev
= NULL
;
150 u8 current_mtd_partnum
= 0;
154 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
);
156 /* command line only routines */
157 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
);
158 static int device_del(struct mtd_device
*dev
);
161 * Parses a string into a number. The number stored at ptr is
162 * potentially suffixed with K (for kilobytes, or 1024 bytes),
163 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
164 * 1073741824). If the number is suffixed with K, M, or G, then
165 * the return value is the number multiplied by one kilobyte, one
166 * megabyte, or one gigabyte, respectively.
168 * @param ptr where parse begins
169 * @param retptr output pointer to next char after parse completes (output)
170 * @return resulting unsigned int
172 static u64
memsize_parse (const char *const ptr
, const char **retptr
)
174 u64 ret
= simple_strtoull(ptr
, (char **)retptr
, 0);
198 * Format string describing supplied size. This routine does the opposite job
199 * to memsize_parse(). Size in bytes is converted to string and if possible
200 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
202 * Note, that this routine does not check for buffer overflow, it's the caller
203 * who must assure enough space.
205 * @param buf output buffer
206 * @param size size to be converted to string
208 static void memsize_format(char *buf
, u64 size
)
210 #define SIZE_GB ((u32)1024*1024*1024)
211 #define SIZE_MB ((u32)1024*1024)
212 #define SIZE_KB ((u32)1024)
214 if ((size
% SIZE_GB
) == 0)
215 sprintf(buf
, "%llug", size
/SIZE_GB
);
216 else if ((size
% SIZE_MB
) == 0)
217 sprintf(buf
, "%llum", size
/SIZE_MB
);
218 else if (size
% SIZE_KB
== 0)
219 sprintf(buf
, "%lluk", size
/SIZE_KB
);
221 sprintf(buf
, "%llu", size
);
225 * This routine does global indexing of all partitions. Resulting index for
226 * current partition is saved in 'mtddevnum'. Current partition name in
229 static void index_partitions(void)
232 struct part_info
*part
;
233 struct list_head
*dentry
;
234 struct mtd_device
*dev
;
236 debug("--- index partitions ---\n");
238 if (current_mtd_dev
) {
240 list_for_each(dentry
, &devices
) {
241 dev
= list_entry(dentry
, struct mtd_device
, link
);
242 if (dev
== current_mtd_dev
) {
243 mtddevnum
+= current_mtd_partnum
;
244 env_set_ulong("mtddevnum", mtddevnum
);
245 debug("=> mtddevnum %d,\n", mtddevnum
);
248 mtddevnum
+= dev
->num_parts
;
251 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
253 env_set("mtddevname", part
->name
);
255 debug("=> mtddevname %s\n", part
->name
);
257 env_set("mtddevname", NULL
);
259 debug("=> mtddevname NULL\n");
262 env_set("mtddevnum", NULL
);
263 env_set("mtddevname", NULL
);
265 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
270 * Save current device and partition in environment variable 'partition'.
272 static void current_save(void)
276 debug("--- current_save ---\n");
278 if (current_mtd_dev
) {
279 sprintf(buf
, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
280 current_mtd_dev
->id
->num
, current_mtd_partnum
);
282 env_set("partition", buf
);
283 strncpy(last_partition
, buf
, 16);
285 debug("=> partition %s\n", buf
);
287 env_set("partition", NULL
);
288 last_partition
[0] = '\0';
290 debug("=> partition NULL\n");
297 * Produce a mtd_info given a type and num.
299 * @param type mtd type
300 * @param num mtd number
301 * @param mtd a pointer to an mtd_info instance (output)
302 * @return 0 if device is valid, 1 otherwise
304 static int get_mtd_info(u8 type
, u8 num
, struct mtd_info
**mtd
)
308 sprintf(mtd_dev
, "%s%d", MTD_DEV_TYPE(type
), num
);
309 *mtd
= get_mtd_device_nm(mtd_dev
);
311 printf("Device %s not found!\n", mtd_dev
);
314 put_mtd_device(*mtd
);
320 * Performs sanity check for supplied flash partition.
321 * Table of existing MTD flash devices is searched and partition device
322 * is located. Alignment with the granularity of nand erasesize is verified.
324 * @param id of the parent device
325 * @param part partition to validate
326 * @return 0 if partition is valid, 1 otherwise
328 static int part_validate_eraseblock(struct mtdids
*id
, struct part_info
*part
)
330 struct mtd_info
*mtd
= NULL
;
335 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
338 part
->sector_size
= mtd
->erasesize
;
340 if (!mtd
->numeraseregions
) {
342 * Only one eraseregion (NAND, SPI-NAND, OneNAND or uniform NOR),
343 * checking for alignment is easy here
345 offset
= part
->offset
;
346 if (do_div(offset
, mtd
->erasesize
)) {
347 printf("%s%d: partition (%s) start offset"
348 "alignment incorrect\n",
349 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
354 if (do_div(size
, mtd
->erasesize
)) {
355 printf("%s%d: partition (%s) size alignment incorrect\n",
356 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
361 * Multiple eraseregions (non-uniform NOR),
362 * checking for alignment is more complex here
365 /* Check start alignment */
366 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
367 start
= mtd
->eraseregions
[i
].offset
;
368 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
369 if (part
->offset
== start
)
371 start
+= mtd
->eraseregions
[i
].erasesize
;
375 printf("%s%d: partition (%s) start offset alignment incorrect\n",
376 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
381 /* Check end/size alignment */
382 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
383 start
= mtd
->eraseregions
[i
].offset
;
384 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
385 if ((part
->offset
+ part
->size
) == start
)
387 start
+= mtd
->eraseregions
[i
].erasesize
;
390 /* Check last sector alignment */
391 if ((part
->offset
+ part
->size
) == start
)
394 printf("%s%d: partition (%s) size alignment incorrect\n",
395 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
407 * Performs sanity check for supplied partition. Offset and size are
408 * verified to be within valid range. Partition type is checked and
409 * part_validate_eraseblock() is called with the argument of part.
411 * @param id of the parent device
412 * @param part partition to validate
413 * @return 0 if partition is valid, 1 otherwise
415 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
417 if (part
->size
== SIZE_REMAINING
)
418 part
->size
= id
->size
- part
->offset
;
420 if (part
->offset
> id
->size
) {
421 printf("%s: offset %08llx beyond flash size %08llx\n",
422 id
->mtd_id
, part
->offset
, id
->size
);
426 if ((part
->offset
+ part
->size
) <= part
->offset
) {
427 printf("%s%d: partition (%s) size too big\n",
428 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
432 if (part
->offset
+ part
->size
> id
->size
) {
433 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
438 * Now we need to check if the partition starts and ends on
439 * sector (eraseblock) regions
441 return part_validate_eraseblock(id
, part
);
445 * Delete selected partition from the partition list of the specified device.
447 * @param dev device to delete partition from
448 * @param part partition to delete
449 * @return 0 on success, 1 otherwise
451 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
453 u8 current_save_needed
= 0;
455 /* if there is only one partition, remove whole device */
456 if (dev
->num_parts
== 1)
457 return device_del(dev
);
459 /* otherwise just delete this partition */
461 if (dev
== current_mtd_dev
) {
462 /* we are modyfing partitions for the current device,
464 struct part_info
*curr_pi
;
465 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
468 if (curr_pi
== part
) {
469 printf("current partition deleted, resetting current to 0\n");
470 current_mtd_partnum
= 0;
471 } else if (part
->offset
<= curr_pi
->offset
) {
472 current_mtd_partnum
--;
474 current_save_needed
= 1;
478 list_del(&part
->link
);
482 if (current_save_needed
> 0)
491 * Delete all partitions from parts head list, free memory.
493 * @param head list of partitions to delete
495 static void part_delall(struct list_head
*head
)
497 struct list_head
*entry
, *n
;
498 struct part_info
*part_tmp
;
500 /* clean tmp_list and free allocated memory */
501 list_for_each_safe(entry
, n
, head
) {
502 part_tmp
= list_entry(entry
, struct part_info
, link
);
510 * Add new partition to the supplied partition list. Make sure partitions are
511 * sorted by offset in ascending order.
513 * @param head list this partition is to be added to
514 * @param new partition to be added
516 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
518 struct list_head
*entry
;
519 struct part_info
*new_pi
, *curr_pi
;
521 /* link partition to parrent dev */
524 if (list_empty(&dev
->parts
)) {
525 debug("part_sort_add: list empty\n");
526 list_add(&part
->link
, &dev
->parts
);
532 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
534 /* get current partition info if we are updating current device */
536 if (dev
== current_mtd_dev
)
537 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
539 list_for_each(entry
, &dev
->parts
) {
540 struct part_info
*pi
;
542 pi
= list_entry(entry
, struct part_info
, link
);
544 /* be compliant with kernel cmdline, allow only one partition at offset zero */
545 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
546 printf("cannot add second partition at offset 0\n");
550 if (new_pi
->offset
<= pi
->offset
) {
551 list_add_tail(&part
->link
, entry
);
554 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
555 /* we are modyfing partitions for the current
556 * device, update current */
557 current_mtd_partnum
++;
566 list_add_tail(&part
->link
, &dev
->parts
);
573 * Add provided partition to the partition list of a given device.
575 * @param dev device to which partition is added
576 * @param part partition to be added
577 * @return 0 on success, 1 otherwise
579 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
581 /* verify alignment and size */
582 if (part_validate(dev
->id
, part
) != 0)
585 /* partition is ok, add it to the list */
586 if (part_sort_add(dev
, part
) != 0)
593 * Parse one partition definition, allocate memory and return pointer to this
594 * location in retpart.
596 * @param partdef pointer to the partition definition string i.e. <part-def>
597 * @param ret output pointer to next char after parse completes (output)
598 * @param retpart pointer to the allocated partition (output)
599 * @return 0 on success, 1 otherwise
601 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
603 struct part_info
*part
;
608 unsigned int mask_flags
;
615 /* fetch the partition size */
617 /* assign all remaining space to this partition */
618 debug("'-': remaining size assigned\n");
619 size
= SIZE_REMAINING
;
622 size
= memsize_parse(p
, &p
);
623 if (size
< MIN_PART_SIZE
) {
624 printf("partition size too small (%llx)\n", size
);
629 /* check for offset */
630 offset
= OFFSET_NOT_SPECIFIED
;
633 offset
= memsize_parse(p
, &p
);
636 /* now look for the name */
639 if ((p
= strchr(name
, ')')) == NULL
) {
640 printf("no closing ) found in partition name\n");
643 name_len
= p
- name
+ 1;
644 if ((name_len
- 1) == 0) {
645 printf("empty partition name\n");
650 /* 0x00000000@0x00000000 */
655 /* test for options */
657 if (strncmp(p
, "ro", 2) == 0) {
658 mask_flags
|= MTD_WRITEABLE_CMD
;
662 /* check for next partition definition */
664 if (size
== SIZE_REMAINING
) {
666 printf("no partitions allowed after a fill-up partition\n");
670 } else if ((*p
== ';') || (*p
== '\0')) {
673 printf("unexpected character '%c' at the end of partition\n", *p
);
678 /* allocate memory */
679 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
681 printf("out of memory\n");
684 memset(part
, 0, sizeof(struct part_info
) + name_len
);
686 part
->offset
= offset
;
687 part
->mask_flags
= mask_flags
;
688 part
->name
= (char *)(part
+ 1);
691 /* copy user provided name */
692 strncpy(part
->name
, name
, name_len
- 1);
695 /* auto generated name in form of size@offset */
696 snprintf(part
->name
, name_len
, "0x%08llx@0x%08llx", size
, offset
);
700 part
->name
[name_len
- 1] = '\0';
701 INIT_LIST_HEAD(&part
->link
);
703 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
704 part
->name
, part
->size
,
705 part
->offset
, part
->mask_flags
);
712 * Check device number to be within valid range for given device type.
714 * @param type mtd type
715 * @param num mtd number
716 * @param size a pointer to the size of the mtd device (output)
717 * @return 0 if device is valid, 1 otherwise
719 static int mtd_device_validate(u8 type
, u8 num
, u64
*size
)
721 struct mtd_info
*mtd
= NULL
;
723 if (get_mtd_info(type
, num
, &mtd
))
732 * Delete all mtd devices from a supplied devices list, free memory allocated for
733 * each device and delete all device partitions.
735 * @return 0 on success, 1 otherwise
737 static int device_delall(struct list_head
*head
)
739 struct list_head
*entry
, *n
;
740 struct mtd_device
*dev_tmp
;
742 /* clean devices list */
743 list_for_each_safe(entry
, n
, head
) {
744 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
746 part_delall(&dev_tmp
->parts
);
749 INIT_LIST_HEAD(&devices
);
755 * If provided device exists it's partitions are deleted, device is removed
756 * from device list and device memory is freed.
758 * @param dev device to be deleted
759 * @return 0 on success, 1 otherwise
761 static int device_del(struct mtd_device
*dev
)
763 part_delall(&dev
->parts
);
764 list_del(&dev
->link
);
767 if (dev
== current_mtd_dev
) {
768 /* we just deleted current device */
769 if (list_empty(&devices
)) {
770 current_mtd_dev
= NULL
;
772 /* reset first partition from first dev from the
773 * devices list as current */
774 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
775 current_mtd_partnum
= 0;
786 * Search global device list and return pointer to the device of type and num
789 * @param type device type
790 * @param num device number
791 * @return NULL if requested device does not exist
793 struct mtd_device
*device_find(u8 type
, u8 num
)
795 struct list_head
*entry
;
796 struct mtd_device
*dev_tmp
;
798 list_for_each(entry
, &devices
) {
799 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
801 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
809 * Add specified device to the global device list.
811 * @param dev device to be added
813 static void device_add(struct mtd_device
*dev
)
815 u8 current_save_needed
= 0;
817 if (list_empty(&devices
)) {
818 current_mtd_dev
= dev
;
819 current_mtd_partnum
= 0;
820 current_save_needed
= 1;
823 list_add_tail(&dev
->link
, &devices
);
825 if (current_save_needed
> 0)
832 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
833 * return pointer to the device structure.
835 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
836 * @param ret output pointer to next char after parse completes (output)
837 * @param retdev pointer to the allocated device (output)
838 * @return 0 on success, 1 otherwise
840 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
842 struct mtd_device
*dev
;
843 struct part_info
*part
;
846 unsigned int mtd_id_len
;
850 struct list_head
*entry
, *n
;
855 debug("===device_parse===\n");
864 mtd_id
= p
= mtd_dev
;
865 if (!(p
= strchr(mtd_id
, ':'))) {
866 printf("no <mtd-id> identifier\n");
869 mtd_id_len
= p
- mtd_id
+ 1;
872 /* verify if we have a valid device specified */
873 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
874 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
878 pend
= strchr(p
, ';');
879 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
880 id
->type
, MTD_DEV_TYPE(id
->type
),
881 id
->num
, id
->mtd_id
);
882 debug("parsing partitions %.*s\n", (int)(pend
? pend
- p
: strlen(p
)), p
);
884 /* parse partitions */
888 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
889 /* if device already exists start at the end of the last partition */
890 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
891 offset
= part
->offset
+ part
->size
;
894 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
896 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
899 /* calculate offset when not specified */
900 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
901 part
->offset
= offset
;
903 offset
= part
->offset
;
905 /* verify alignment and size */
906 if (part_validate(id
, part
) != 0)
909 offset
+= part
->size
;
911 /* partition is ok, add it to the list */
912 list_add_tail(&part
->link
, &tmp_list
);
917 part_delall(&tmp_list
);
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'|'spi-nand'<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
;
1057 } else if (strncmp(p
, "spi-nand", 8) == 0) {
1058 *dev_type
= MTD_DEV_TYPE_SPINAND
;
1061 printf("incorrect device type in %s\n", id
);
1066 printf("incorrect device number in %s\n", id
);
1070 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1077 * Process all devices and generate corresponding mtdparts string describing
1078 * all partitions on all devices.
1080 * @param buf output buffer holding generated mtdparts string (output)
1081 * @param buflen buffer size
1082 * @return 0 on success, 1 otherwise
1084 static int generate_mtdparts(char *buf
, u32 buflen
)
1086 struct list_head
*pentry
, *dentry
;
1087 struct mtd_device
*dev
;
1088 struct part_info
*part
, *prev_part
;
1093 u32 maxlen
= buflen
- 1;
1095 debug("--- generate_mtdparts ---\n");
1097 if (list_empty(&devices
)) {
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 *env_get_mtdparts(char *buf
)
1538 if (gd
->flags
& GD_FLG_ENV_READY
)
1539 return env_get("mtdparts");
1540 if (env_get_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
= env_get_mtdparts(tmp_parts
);
1572 /* Skip the useless prefix, if any */
1573 if (strncmp(p
, "mtdparts=", 9) == 0)
1576 while (*p
!= '\0') {
1578 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1581 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1582 dev
->id
->num
, dev
->id
->mtd_id
);
1584 /* check if parsed device is already on the list */
1585 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1586 printf("device %s%d redefined, please correct mtdparts variable\n",
1587 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1591 list_add_tail(&dev
->link
, &devices
);
1596 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'|'spi-nand'<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
+ 1];
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, sizeof(last_ids
));
1734 memset(last_parts
, 0, sizeof(last_parts
));
1735 memset(last_partition
, 0, sizeof(last_partition
));
1736 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1737 board_mtdparts_default(&mtdids_default
, &mtdparts_default
);
1744 ids
= env_get("mtdids");
1745 parts
= env_get_mtdparts(tmp_parts
);
1746 current_partition
= env_get("partition");
1748 /* save it for later parsing, cannot rely on current partition pointer
1749 * as 'partition' variable may be updated during init */
1750 memset(tmp_parts
, 0, sizeof(tmp_parts
));
1751 memset(tmp_ep
, 0, sizeof(tmp_ep
));
1752 if (current_partition
)
1753 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1755 debug("last_ids : %s\n", last_ids
);
1756 debug("env_ids : %s\n", ids
);
1757 debug("last_parts: %s\n", last_parts
);
1758 debug("env_parts : %s\n\n", parts
);
1760 debug("last_partition : %s\n", last_partition
);
1761 debug("env_partition : %s\n", current_partition
);
1763 /* if mtdids variable is empty try to use defaults */
1765 if (mtdids_default
) {
1766 debug("mtdids variable not defined, using default\n");
1767 ids
= mtdids_default
;
1768 env_set("mtdids", (char *)ids
);
1770 printf("mtdids not defined, no default present\n");
1774 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1775 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1779 /* use defaults when mtdparts variable is not defined
1780 * once mtdparts is saved environment, drop use_defaults flag */
1782 if (mtdparts_default
&& use_defaults
) {
1783 parts
= mtdparts_default
;
1784 if (env_set("mtdparts", (char *)parts
) == 0)
1787 printf("mtdparts variable not set, see 'help mtdparts'\n");
1790 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1791 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1795 /* check if we have already parsed those mtdids */
1796 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1801 if (parse_mtdids(ids
) != 0) {
1806 /* ok it's good, save new ids */
1807 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1810 /* parse partitions if either mtdparts or mtdids were updated */
1811 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1812 if (parse_mtdparts(parts
) != 0)
1815 if (list_empty(&devices
)) {
1816 printf("mtdparts_init: no valid partitions\n");
1820 /* ok it's good, save new parts */
1821 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1823 /* reset first partition from first dev from the list as current */
1824 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1825 current_mtd_partnum
= 0;
1828 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1829 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1830 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1833 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1834 if (!parts
&& (last_parts
[0] != '\0'))
1835 return mtd_devices_init();
1837 /* do not process current partition if mtdparts variable is null */
1841 /* is current partition set in environment? if so, use it */
1842 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1843 struct part_info
*p
;
1844 struct mtd_device
*cdev
;
1847 debug("--- getting current partition: %s\n", tmp_ep
);
1849 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1850 current_mtd_dev
= cdev
;
1851 current_mtd_partnum
= pnum
;
1854 } else if (env_get("partition") == NULL
) {
1855 debug("no partition variable set, setting...\n");
1863 * Return pointer to the partition of a requested number from a requested
1866 * @param dev device that is to be searched for a partition
1867 * @param part_num requested partition number
1868 * @return pointer to the part_info, NULL otherwise
1870 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1872 struct list_head
*entry
;
1873 struct part_info
*part
;
1879 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1880 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1881 dev
->id
->num
, dev
->id
->mtd_id
);
1883 if (part_num
>= dev
->num_parts
) {
1884 printf("invalid partition number %d for device %s%d (%s)\n",
1885 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1886 dev
->id
->num
, dev
->id
->mtd_id
);
1890 /* locate partition number, return it */
1892 list_for_each(entry
, &dev
->parts
) {
1893 part
= list_entry(entry
, struct part_info
, link
);
1895 if (part_num
== num
++) {
1903 /***************************************************/
1904 /* U-Boot commands */
1905 /***************************************************/
1906 /* command line only */
1908 * Routine implementing u-boot chpart command. Sets new current partition based
1909 * on the user supplied partition id. For partition id format see find_dev_and_part().
1911 * @param cmdtp command internal data
1912 * @param flag command flag
1913 * @param argc number of arguments supplied to the command
1914 * @param argv arguments list
1915 * @return 0 on success, 1 otherwise
1917 static int do_chpart(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1919 /* command line only */
1920 struct mtd_device
*dev
;
1921 struct part_info
*part
;
1924 if (mtdparts_init() !=0)
1928 printf("no partition id specified\n");
1932 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1935 current_mtd_dev
= dev
;
1936 current_mtd_partnum
= pnum
;
1939 printf("partition changed to %s%d,%d\n",
1940 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1946 * Routine implementing u-boot mtdparts command. Initialize/update default global
1947 * partition list and process user partition request (list, add, del).
1949 * @param cmdtp command internal data
1950 * @param flag command flag
1951 * @param argc number of arguments supplied to the command
1952 * @param argv arguments list
1953 * @return 0 on success, 1 otherwise
1955 static int do_mtdparts(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
1956 char * const argv
[])
1959 if (strcmp(argv
[1], "default") == 0) {
1960 env_set("mtdids", NULL
);
1961 env_set("mtdparts", NULL
);
1962 env_set("partition", NULL
);
1967 } else if (strcmp(argv
[1], "delall") == 0) {
1968 /* this may be the first run, initialize lists if needed */
1971 env_set("mtdparts", NULL
);
1973 /* mtd_devices_init() calls current_save() */
1974 return mtd_devices_init();
1978 /* make sure we are in sync with env variables */
1979 if (mtdparts_init() != 0)
1987 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1988 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1989 #define PART_ADD_DESC_MAXLEN 64
1990 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1991 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1992 struct mtd_info
*mtd
;
1993 uint64_t next_offset
;
1996 struct mtd_device
*dev
;
1997 struct mtd_device
*dev_tmp
;
1999 struct part_info
*p
;
2001 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
2004 if ((id
= id_find(type
, num
)) == NULL
) {
2005 printf("no such device %s defined in mtdids variable\n", argv
[2]);
2009 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
2010 len
+= strlen(argv
[3]); /* size@offset */
2011 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
2012 if (argv
[5] && (strlen(argv
[5]) == 2))
2013 len
+= 2; /* 'ro' */
2015 if (len
>= PART_ADD_DESC_MAXLEN
) {
2016 printf("too long partition description\n");
2019 sprintf(tmpbuf
, "%s:%s(%s)%s",
2020 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
2021 debug("add tmpbuf: %s\n", tmpbuf
);
2023 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
2026 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
2027 dev
->id
->num
, dev
->id
->mtd_id
);
2029 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2031 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2032 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2035 if (!strcmp(&argv
[1][3], ".spread")) {
2036 spread_partition(mtd
, p
, &next_offset
);
2037 debug("increased %s to %llu bytes\n", p
->name
, p
->size
);
2041 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2042 if (dev_tmp
== NULL
) {
2044 } else if (part_add(dev_tmp
, p
) != 0) {
2045 /* merge new partition with existing ones*/
2050 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2051 printf("generated mtdparts too long, resetting to null\n");
2058 /* mtdparts del part-id */
2059 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2060 debug("del: part-id = %s\n", argv
[2]);
2062 return delete_partition(argv
[2]);
2065 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2066 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2067 return spread_partitions();
2068 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2070 return CMD_RET_USAGE
;
2073 /***************************************************/
2075 chpart
, 2, 0, do_chpart
,
2076 "change active partition",
2078 " - change active partition (e.g. part-id = nand0,1)"
2081 #ifdef CONFIG_SYS_LONGHELP
2082 static char mtdparts_help_text
[] =
2084 " - list partition table\n"
2086 " - delete all partitions\n"
2087 "mtdparts del part-id\n"
2088 " - delete partition (e.g. part-id = nand0,1)\n"
2089 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2090 " - add partition\n"
2091 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2092 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2093 " - add partition, padding size by skipping bad blocks\n"
2095 "mtdparts default\n"
2096 " - reset partition table to defaults\n"
2097 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2099 " - adjust the sizes of the partitions so they are\n"
2100 " at least as big as the mtdparts variable specifies\n"
2101 " and they each start on a good block\n\n"
2104 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2106 "this command uses three environment variables:\n\n"
2107 "'partition' - keeps current partition identifier\n\n"
2108 "partition := <part-id>\n"
2109 "<part-id> := <dev-id>,part_num\n\n"
2110 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2111 "mtdids=<idmap>[,<idmap>,...]\n\n"
2112 "<idmap> := <dev-id>=<mtd-id>\n"
2113 "<dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>\n"
2114 "<dev-num> := mtd device number, 0...\n"
2115 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2116 "'mtdparts' - partition list\n\n"
2117 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2118 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2119 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2120 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2121 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2122 "<offset> := partition start offset within the device\n"
2123 "<name> := '(' NAME ')'\n"
2124 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2128 mtdparts
, 6, 0, do_mtdparts
,
2129 "define flash/nand partitions", mtdparts_help_text
2131 /***************************************************/