]>
git.ipfire.org Git - people/ms/u-boot.git/blob - common/cmd_mtdparts.c
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
6 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
9 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
12 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
14 * Added support for reading flash partition table from environment.
15 * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
19 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
21 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
22 * Copyright 2002 SYSGO Real-Time Solutions GmbH
24 * SPDX-License-Identifier: GPL-2.0+
28 * Three environment variables are used by the parsing routines:
30 * 'partition' - keeps current partition identifier
32 * partition := <part-id>
33 * <part-id> := <dev-id>,part_num
36 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
38 * mtdids=<idmap>[,<idmap>,...]
40 * <idmap> := <dev-id>=<mtd-id>
41 * <dev-id> := 'nand'|'nor'|'onenand'<dev-num>
42 * <dev-num> := mtd device number, 0...
43 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
46 * 'mtdparts' - partition list
48 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
50 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
51 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
52 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
53 * <size> := standard linux memsize OR '-' to denote all remaining space
54 * <offset> := partition start offset within the device
55 * <name> := '(' NAME ')'
56 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
59 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
60 * - if the above variables are not set defaults for a given target are used
64 * 1 NOR Flash, with 1 single writable partition:
65 * mtdids=nor0=edb7312-nor
66 * mtdparts=mtdparts=edb7312-nor:-
68 * 1 NOR Flash with 2 partitions, 1 NAND with one
69 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
70 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
77 #include <jffs2/load_kernel.h>
78 #include <linux/list.h>
79 #include <linux/ctype.h>
80 #include <linux/err.h>
81 #include <linux/mtd/mtd.h>
83 #if defined(CONFIG_CMD_NAND)
84 #include <linux/mtd/nand.h>
88 #if defined(CONFIG_CMD_ONENAND)
89 #include <linux/mtd/onenand.h>
90 #include <onenand_uboot.h>
93 DECLARE_GLOBAL_DATA_PTR
;
95 /* special size referring to all the remaining space in a partition */
96 #define SIZE_REMAINING 0xFFFFFFFF
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 0xFFFFFFFF
104 /* minimum partition size */
105 #define MIN_PART_SIZE 4096
107 /* this flag needs to be set in part_info struct mask_flags
108 * field for read-only partitions */
109 #define MTD_WRITEABLE_CMD 1
111 /* default values for mtdids and mtdparts variables */
112 #if defined(MTDIDS_DEFAULT)
113 static const char *const mtdids_default
= MTDIDS_DEFAULT
;
115 static const char *const mtdids_default
= NULL
;
118 #if defined(MTDPARTS_DEFAULT)
119 static const char *const mtdparts_default
= MTDPARTS_DEFAULT
;
121 static const char *const mtdparts_default
= NULL
;
124 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
125 #define MTDIDS_MAXLEN 128
126 #define MTDPARTS_MAXLEN 512
127 #define PARTITION_MAXLEN 16
128 static char last_ids
[MTDIDS_MAXLEN
];
129 static char last_parts
[MTDPARTS_MAXLEN
];
130 static char last_partition
[PARTITION_MAXLEN
];
132 /* low level jffs2 cache cleaning routine */
133 extern void jffs2_free_cache(struct part_info
*part
);
135 /* mtdids mapping list, filled by parse_ids() */
136 static struct list_head mtdids
;
138 /* device/partition list, parse_cmdline() parses into here */
139 static struct list_head devices
;
141 /* current active device and partition number */
142 struct mtd_device
*current_mtd_dev
= NULL
;
143 u8 current_mtd_partnum
= 0;
145 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
);
147 /* command line only routines */
148 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
);
149 static int device_del(struct mtd_device
*dev
);
152 * Parses a string into a number. The number stored at ptr is
153 * potentially suffixed with K (for kilobytes, or 1024 bytes),
154 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
155 * 1073741824). If the number is suffixed with K, M, or G, then
156 * the return value is the number multiplied by one kilobyte, one
157 * megabyte, or one gigabyte, respectively.
159 * @param ptr where parse begins
160 * @param retptr output pointer to next char after parse completes (output)
161 * @return resulting unsigned int
163 static unsigned long memsize_parse (const char *const ptr
, const char **retptr
)
165 unsigned long ret
= simple_strtoul(ptr
, (char **)retptr
, 0);
186 * Format string describing supplied size. This routine does the opposite job
187 * to memsize_parse(). Size in bytes is converted to string and if possible
188 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
190 * Note, that this routine does not check for buffer overflow, it's the caller
191 * who must assure enough space.
193 * @param buf output buffer
194 * @param size size to be converted to string
196 static void memsize_format(char *buf
, u32 size
)
198 #define SIZE_GB ((u32)1024*1024*1024)
199 #define SIZE_MB ((u32)1024*1024)
200 #define SIZE_KB ((u32)1024)
202 if ((size
% SIZE_GB
) == 0)
203 sprintf(buf
, "%ug", size
/SIZE_GB
);
204 else if ((size
% SIZE_MB
) == 0)
205 sprintf(buf
, "%um", size
/SIZE_MB
);
206 else if (size
% SIZE_KB
== 0)
207 sprintf(buf
, "%uk", size
/SIZE_KB
);
209 sprintf(buf
, "%u", size
);
213 * This routine does global indexing of all partitions. Resulting index for
214 * current partition is saved in 'mtddevnum'. Current partition name in
217 static void index_partitions(void)
220 struct part_info
*part
;
221 struct list_head
*dentry
;
222 struct mtd_device
*dev
;
224 debug("--- index partitions ---\n");
226 if (current_mtd_dev
) {
228 list_for_each(dentry
, &devices
) {
229 dev
= list_entry(dentry
, struct mtd_device
, link
);
230 if (dev
== current_mtd_dev
) {
231 mtddevnum
+= current_mtd_partnum
;
232 setenv_ulong("mtddevnum", mtddevnum
);
235 mtddevnum
+= dev
->num_parts
;
238 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
239 setenv("mtddevname", part
->name
);
241 debug("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum
, part
->name
);
243 setenv("mtddevnum", NULL
);
244 setenv("mtddevname", NULL
);
246 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
251 * Save current device and partition in environment variable 'partition'.
253 static void current_save(void)
257 debug("--- current_save ---\n");
259 if (current_mtd_dev
) {
260 sprintf(buf
, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
261 current_mtd_dev
->id
->num
, current_mtd_partnum
);
263 setenv("partition", buf
);
264 strncpy(last_partition
, buf
, 16);
266 debug("=> partition %s\n", buf
);
268 setenv("partition", NULL
);
269 last_partition
[0] = '\0';
271 debug("=> partition NULL\n");
278 * Produce a mtd_info given a type and num.
280 * @param type mtd type
281 * @param num mtd number
282 * @param mtd a pointer to an mtd_info instance (output)
283 * @return 0 if device is valid, 1 otherwise
285 static int get_mtd_info(u8 type
, u8 num
, struct mtd_info
**mtd
)
289 sprintf(mtd_dev
, "%s%d", MTD_DEV_TYPE(type
), num
);
290 *mtd
= get_mtd_device_nm(mtd_dev
);
292 printf("Device %s not found!\n", mtd_dev
);
300 * Performs sanity check for supplied flash partition.
301 * Table of existing MTD flash devices is searched and partition device
302 * is located. Alignment with the granularity of nand erasesize is verified.
304 * @param id of the parent device
305 * @param part partition to validate
306 * @return 0 if partition is valid, 1 otherwise
308 static int part_validate_eraseblock(struct mtdids
*id
, struct part_info
*part
)
310 struct mtd_info
*mtd
= NULL
;
314 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
317 part
->sector_size
= mtd
->erasesize
;
319 if (!mtd
->numeraseregions
) {
321 * Only one eraseregion (NAND, OneNAND or uniform NOR),
322 * checking for alignment is easy here
324 if ((unsigned long)part
->offset
% mtd
->erasesize
) {
325 printf("%s%d: partition (%s) start offset"
326 "alignment incorrect\n",
327 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
331 if (part
->size
% mtd
->erasesize
) {
332 printf("%s%d: partition (%s) size alignment incorrect\n",
333 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
338 * Multiple eraseregions (non-uniform NOR),
339 * checking for alignment is more complex here
342 /* Check start alignment */
343 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
344 start
= mtd
->eraseregions
[i
].offset
;
345 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
346 if (part
->offset
== start
)
348 start
+= mtd
->eraseregions
[i
].erasesize
;
352 printf("%s%d: partition (%s) start offset alignment incorrect\n",
353 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
358 /* Check end/size alignment */
359 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
360 start
= mtd
->eraseregions
[i
].offset
;
361 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
362 if ((part
->offset
+ part
->size
) == start
)
364 start
+= mtd
->eraseregions
[i
].erasesize
;
367 /* Check last sector alignment */
368 if ((part
->offset
+ part
->size
) == start
)
371 printf("%s%d: partition (%s) size alignment incorrect\n",
372 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
384 * Performs sanity check for supplied partition. Offset and size are verified
385 * to be within valid range. Partition type is checked and either
386 * parts_validate_nor() or parts_validate_nand() is called with the argument
389 * @param id of the parent device
390 * @param part partition to validate
391 * @return 0 if partition is valid, 1 otherwise
393 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
395 if (part
->size
== SIZE_REMAINING
)
396 part
->size
= id
->size
- part
->offset
;
398 if (part
->offset
> id
->size
) {
399 printf("%s: offset %08x beyond flash size %08x\n",
400 id
->mtd_id
, part
->offset
, id
->size
);
404 if ((part
->offset
+ part
->size
) <= part
->offset
) {
405 printf("%s%d: partition (%s) size too big\n",
406 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
410 if (part
->offset
+ part
->size
> id
->size
) {
411 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
416 * Now we need to check if the partition starts and ends on
417 * sector (eraseblock) regions
419 return part_validate_eraseblock(id
, part
);
423 * Delete selected partition from the partion list of the specified device.
425 * @param dev device to delete partition from
426 * @param part partition to delete
427 * @return 0 on success, 1 otherwise
429 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
431 u8 current_save_needed
= 0;
433 /* if there is only one partition, remove whole device */
434 if (dev
->num_parts
== 1)
435 return device_del(dev
);
437 /* otherwise just delete this partition */
439 if (dev
== current_mtd_dev
) {
440 /* we are modyfing partitions for the current device,
442 struct part_info
*curr_pi
;
443 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
446 if (curr_pi
== part
) {
447 printf("current partition deleted, resetting current to 0\n");
448 current_mtd_partnum
= 0;
449 } else if (part
->offset
<= curr_pi
->offset
) {
450 current_mtd_partnum
--;
452 current_save_needed
= 1;
456 list_del(&part
->link
);
460 if (current_save_needed
> 0)
469 * Delete all partitions from parts head list, free memory.
471 * @param head list of partitions to delete
473 static void part_delall(struct list_head
*head
)
475 struct list_head
*entry
, *n
;
476 struct part_info
*part_tmp
;
478 /* clean tmp_list and free allocated memory */
479 list_for_each_safe(entry
, n
, head
) {
480 part_tmp
= list_entry(entry
, struct part_info
, link
);
488 * Add new partition to the supplied partition list. Make sure partitions are
489 * sorted by offset in ascending order.
491 * @param head list this partition is to be added to
492 * @param new partition to be added
494 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
496 struct list_head
*entry
;
497 struct part_info
*new_pi
, *curr_pi
;
499 /* link partition to parrent dev */
502 if (list_empty(&dev
->parts
)) {
503 debug("part_sort_add: list empty\n");
504 list_add(&part
->link
, &dev
->parts
);
510 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
512 /* get current partition info if we are updating current device */
514 if (dev
== current_mtd_dev
)
515 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
517 list_for_each(entry
, &dev
->parts
) {
518 struct part_info
*pi
;
520 pi
= list_entry(entry
, struct part_info
, link
);
522 /* be compliant with kernel cmdline, allow only one partition at offset zero */
523 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
524 printf("cannot add second partition at offset 0\n");
528 if (new_pi
->offset
<= pi
->offset
) {
529 list_add_tail(&part
->link
, entry
);
532 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
533 /* we are modyfing partitions for the current
534 * device, update current */
535 current_mtd_partnum
++;
544 list_add_tail(&part
->link
, &dev
->parts
);
551 * Add provided partition to the partition list of a given device.
553 * @param dev device to which partition is added
554 * @param part partition to be added
555 * @return 0 on success, 1 otherwise
557 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
559 /* verify alignment and size */
560 if (part_validate(dev
->id
, part
) != 0)
563 /* partition is ok, add it to the list */
564 if (part_sort_add(dev
, part
) != 0)
571 * Parse one partition definition, allocate memory and return pointer to this
572 * location in retpart.
574 * @param partdef pointer to the partition definition string i.e. <part-def>
575 * @param ret output pointer to next char after parse completes (output)
576 * @param retpart pointer to the allocated partition (output)
577 * @return 0 on success, 1 otherwise
579 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
581 struct part_info
*part
;
583 unsigned long offset
;
586 unsigned int mask_flags
;
593 /* fetch the partition size */
595 /* assign all remaining space to this partition */
596 debug("'-': remaining size assigned\n");
597 size
= SIZE_REMAINING
;
600 size
= memsize_parse(p
, &p
);
601 if (size
< MIN_PART_SIZE
) {
602 printf("partition size too small (%lx)\n", size
);
607 /* check for offset */
608 offset
= OFFSET_NOT_SPECIFIED
;
611 offset
= memsize_parse(p
, &p
);
614 /* now look for the name */
617 if ((p
= strchr(name
, ')')) == NULL
) {
618 printf("no closing ) found in partition name\n");
621 name_len
= p
- name
+ 1;
622 if ((name_len
- 1) == 0) {
623 printf("empty partition name\n");
628 /* 0x00000000@0x00000000 */
633 /* test for options */
635 if (strncmp(p
, "ro", 2) == 0) {
636 mask_flags
|= MTD_WRITEABLE_CMD
;
640 /* check for next partition definition */
642 if (size
== SIZE_REMAINING
) {
644 printf("no partitions allowed after a fill-up partition\n");
648 } else if ((*p
== ';') || (*p
== '\0')) {
651 printf("unexpected character '%c' at the end of partition\n", *p
);
656 /* allocate memory */
657 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
659 printf("out of memory\n");
662 memset(part
, 0, sizeof(struct part_info
) + name_len
);
664 part
->offset
= offset
;
665 part
->mask_flags
= mask_flags
;
666 part
->name
= (char *)(part
+ 1);
669 /* copy user provided name */
670 strncpy(part
->name
, name
, name_len
- 1);
673 /* auto generated name in form of size@offset */
674 sprintf(part
->name
, "0x%08lx@0x%08lx", size
, offset
);
678 part
->name
[name_len
- 1] = '\0';
679 INIT_LIST_HEAD(&part
->link
);
681 debug("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
682 part
->name
, part
->size
,
683 part
->offset
, part
->mask_flags
);
690 * Check device number to be within valid range for given device type.
692 * @param type mtd type
693 * @param num mtd number
694 * @param size a pointer to the size of the mtd device (output)
695 * @return 0 if device is valid, 1 otherwise
697 static int mtd_device_validate(u8 type
, u8 num
, u32
*size
)
699 struct mtd_info
*mtd
= NULL
;
701 if (get_mtd_info(type
, num
, &mtd
))
710 * Delete all mtd devices from a supplied devices list, free memory allocated for
711 * each device and delete all device partitions.
713 * @return 0 on success, 1 otherwise
715 static int device_delall(struct list_head
*head
)
717 struct list_head
*entry
, *n
;
718 struct mtd_device
*dev_tmp
;
720 /* clean devices list */
721 list_for_each_safe(entry
, n
, head
) {
722 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
724 part_delall(&dev_tmp
->parts
);
727 INIT_LIST_HEAD(&devices
);
733 * If provided device exists it's partitions are deleted, device is removed
734 * from device list and device memory is freed.
736 * @param dev device to be deleted
737 * @return 0 on success, 1 otherwise
739 static int device_del(struct mtd_device
*dev
)
741 part_delall(&dev
->parts
);
742 list_del(&dev
->link
);
745 if (dev
== current_mtd_dev
) {
746 /* we just deleted current device */
747 if (list_empty(&devices
)) {
748 current_mtd_dev
= NULL
;
750 /* reset first partition from first dev from the
751 * devices list as current */
752 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
753 current_mtd_partnum
= 0;
764 * Search global device list and return pointer to the device of type and num
767 * @param type device type
768 * @param num device number
769 * @return NULL if requested device does not exist
771 struct mtd_device
*device_find(u8 type
, u8 num
)
773 struct list_head
*entry
;
774 struct mtd_device
*dev_tmp
;
776 list_for_each(entry
, &devices
) {
777 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
779 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
787 * Add specified device to the global device list.
789 * @param dev device to be added
791 static void device_add(struct mtd_device
*dev
)
793 u8 current_save_needed
= 0;
795 if (list_empty(&devices
)) {
796 current_mtd_dev
= dev
;
797 current_mtd_partnum
= 0;
798 current_save_needed
= 1;
801 list_add_tail(&dev
->link
, &devices
);
803 if (current_save_needed
> 0)
810 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
811 * return pointer to the device structure.
813 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
814 * @param ret output pointer to next char after parse completes (output)
815 * @param retdev pointer to the allocated device (output)
816 * @return 0 on success, 1 otherwise
818 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
820 struct mtd_device
*dev
;
821 struct part_info
*part
;
824 unsigned int mtd_id_len
;
828 struct list_head
*entry
, *n
;
833 debug("===device_parse===\n");
842 mtd_id
= p
= mtd_dev
;
843 if (!(p
= strchr(mtd_id
, ':'))) {
844 printf("no <mtd-id> identifier\n");
847 mtd_id_len
= p
- mtd_id
+ 1;
850 /* verify if we have a valid device specified */
851 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
852 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
857 pend
= strchr(p
, ';');
859 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
860 id
->type
, MTD_DEV_TYPE(id
->type
),
861 id
->num
, id
->mtd_id
);
862 debug("parsing partitions %.*s\n", (pend
? pend
- p
: strlen(p
)), p
);
865 /* parse partitions */
869 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
870 /* if device already exists start at the end of the last partition */
871 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
872 offset
= part
->offset
+ part
->size
;
875 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
877 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
880 /* calculate offset when not specified */
881 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
882 part
->offset
= offset
;
884 offset
= part
->offset
;
886 /* verify alignment and size */
887 if (part_validate(id
, part
) != 0)
890 offset
+= part
->size
;
892 /* partition is ok, add it to the list */
893 list_add_tail(&part
->link
, &tmp_list
);
898 part_delall(&tmp_list
);
902 if (num_parts
== 0) {
903 printf("no partitions for device %s%d (%s)\n",
904 MTD_DEV_TYPE(id
->type
), id
->num
, id
->mtd_id
);
908 debug("\ntotal partitions: %d\n", num_parts
);
910 /* check for next device presence */
915 } else if (*p
== '\0') {
919 printf("unexpected character '%c' at the end of device\n", *p
);
926 /* allocate memory for mtd_device structure */
927 if ((dev
= (struct mtd_device
*)malloc(sizeof(struct mtd_device
))) == NULL
) {
928 printf("out of memory\n");
931 memset(dev
, 0, sizeof(struct mtd_device
));
933 dev
->num_parts
= 0; /* part_sort_add increments num_parts */
934 INIT_LIST_HEAD(&dev
->parts
);
935 INIT_LIST_HEAD(&dev
->link
);
937 /* move partitions from tmp_list to dev->parts */
938 list_for_each_safe(entry
, n
, &tmp_list
) {
939 part
= list_entry(entry
, struct part_info
, link
);
941 if (part_sort_add(dev
, part
) != 0) {
954 * Initialize global device list.
956 * @return 0 on success, 1 otherwise
958 static int mtd_devices_init(void)
960 last_parts
[0] = '\0';
961 current_mtd_dev
= NULL
;
964 return device_delall(&devices
);
968 * Search global mtdids list and find id of requested type and number.
970 * @return pointer to the id if it exists, NULL otherwise
972 static struct mtdids
* id_find(u8 type
, u8 num
)
974 struct list_head
*entry
;
977 list_for_each(entry
, &mtdids
) {
978 id
= list_entry(entry
, struct mtdids
, link
);
980 if ((id
->type
== type
) && (id
->num
== num
))
988 * Search global mtdids list and find id of a requested mtd_id.
990 * Note: first argument is not null terminated.
992 * @param mtd_id string containing requested mtd_id
993 * @param mtd_id_len length of supplied mtd_id
994 * @return pointer to the id if it exists, NULL otherwise
996 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
)
998 struct list_head
*entry
;
1001 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1002 mtd_id_len
, mtd_id
, mtd_id_len
);
1004 list_for_each(entry
, &mtdids
) {
1005 id
= list_entry(entry
, struct mtdids
, link
);
1007 debug("entry: '%s' (len = %d)\n",
1008 id
->mtd_id
, strlen(id
->mtd_id
));
1010 if (mtd_id_len
!= strlen(id
->mtd_id
))
1012 if (strncmp(id
->mtd_id
, mtd_id
, mtd_id_len
) == 0)
1020 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1021 * return device type and number.
1023 * @param id string describing device id
1024 * @param ret_id output pointer to next char after parse completes (output)
1025 * @param dev_type parsed device type (output)
1026 * @param dev_num parsed device number (output)
1027 * @return 0 on success, 1 otherwise
1029 int mtd_id_parse(const char *id
, const char **ret_id
, u8
*dev_type
,
1035 if (strncmp(p
, "nand", 4) == 0) {
1036 *dev_type
= MTD_DEV_TYPE_NAND
;
1038 } else if (strncmp(p
, "nor", 3) == 0) {
1039 *dev_type
= MTD_DEV_TYPE_NOR
;
1041 } else if (strncmp(p
, "onenand", 7) == 0) {
1042 *dev_type
= MTD_DEV_TYPE_ONENAND
;
1045 printf("incorrect device type in %s\n", id
);
1050 printf("incorrect device number in %s\n", id
);
1054 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1061 * Process all devices and generate corresponding mtdparts string describing
1062 * all partitions on all devices.
1064 * @param buf output buffer holding generated mtdparts string (output)
1065 * @param buflen buffer size
1066 * @return 0 on success, 1 otherwise
1068 static int generate_mtdparts(char *buf
, u32 buflen
)
1070 struct list_head
*pentry
, *dentry
;
1071 struct mtd_device
*dev
;
1072 struct part_info
*part
, *prev_part
;
1075 u32 size
, offset
, len
, part_cnt
;
1076 u32 maxlen
= buflen
- 1;
1078 debug("--- generate_mtdparts ---\n");
1080 if (list_empty(&devices
)) {
1085 sprintf(p
, "mtdparts=");
1088 list_for_each(dentry
, &devices
) {
1089 dev
= list_entry(dentry
, struct mtd_device
, link
);
1092 len
= strlen(dev
->id
->mtd_id
) + 1;
1095 memcpy(p
, dev
->id
->mtd_id
, len
- 1);
1100 /* format partitions */
1103 list_for_each(pentry
, &dev
->parts
) {
1104 part
= list_entry(pentry
, struct part_info
, link
);
1106 offset
= part
->offset
;
1109 /* partition size */
1110 memsize_format(tmpbuf
, size
);
1111 len
= strlen(tmpbuf
);
1114 memcpy(p
, tmpbuf
, len
);
1119 /* add offset only when there is a gap between
1121 if ((!prev_part
&& (offset
!= 0)) ||
1122 (prev_part
&& ((prev_part
->offset
+ prev_part
->size
) != part
->offset
))) {
1124 memsize_format(tmpbuf
, offset
);
1125 len
= strlen(tmpbuf
) + 1;
1129 memcpy(p
, tmpbuf
, len
- 1);
1134 /* copy name only if user supplied */
1135 if(!part
->auto_name
) {
1136 len
= strlen(part
->name
) + 2;
1141 memcpy(p
, part
->name
, len
- 2);
1148 if (part
->mask_flags
&& MTD_WRITEABLE_CMD
) {
1157 /* print ',' separator if there are other partitions
1159 if (dev
->num_parts
> part_cnt
) {
1167 /* print ';' separator if there are other devices following */
1168 if (dentry
->next
!= &devices
) {
1176 /* we still have at least one char left, as we decremented maxlen at
1183 last_parts
[0] = '\0';
1188 * Call generate_mtdparts to process all devices and generate corresponding
1189 * mtdparts string, save it in mtdparts environment variable.
1191 * @param buf output buffer holding generated mtdparts string (output)
1192 * @param buflen buffer size
1193 * @return 0 on success, 1 otherwise
1195 static int generate_mtdparts_save(char *buf
, u32 buflen
)
1199 ret
= generate_mtdparts(buf
, buflen
);
1201 if ((buf
[0] != '\0') && (ret
== 0))
1202 setenv("mtdparts", buf
);
1204 setenv("mtdparts", NULL
);
1209 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1211 * Get the net size (w/o bad blocks) of the given partition.
1213 * @param mtd the mtd info
1214 * @param part the partition
1215 * @return the calculated net size of this partition
1217 static uint64_t net_part_size(struct mtd_info
*mtd
, struct part_info
*part
)
1219 uint64_t i
, net_size
= 0;
1221 if (!mtd
->block_isbad
)
1224 for (i
= 0; i
< part
->size
; i
+= mtd
->erasesize
) {
1225 if (!mtd
->block_isbad(mtd
, part
->offset
+ i
))
1226 net_size
+= mtd
->erasesize
;
1233 static void print_partition_table(void)
1235 struct list_head
*dentry
, *pentry
;
1236 struct part_info
*part
;
1237 struct mtd_device
*dev
;
1240 list_for_each(dentry
, &devices
) {
1241 dev
= list_entry(dentry
, struct mtd_device
, link
);
1242 /* list partitions for given device */
1244 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1245 struct mtd_info
*mtd
;
1247 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1250 printf("\ndevice %s%d <%s>, # parts = %d\n",
1251 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1252 dev
->id
->mtd_id
, dev
->num_parts
);
1253 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1255 list_for_each(pentry
, &dev
->parts
) {
1259 part
= list_entry(pentry
, struct part_info
, link
);
1260 net_size
= net_part_size(mtd
, part
);
1261 size_note
= part
->size
== net_size
? " " : " (!)";
1262 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1263 part_num
, part
->name
, part
->size
,
1264 net_size
, size_note
, part
->offset
,
1266 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1267 printf("\ndevice %s%d <%s>, # parts = %d\n",
1268 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1269 dev
->id
->mtd_id
, dev
->num_parts
);
1270 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1272 list_for_each(pentry
, &dev
->parts
) {
1273 part
= list_entry(pentry
, struct part_info
, link
);
1274 printf("%2d: %-20s0x%08x\t0x%08x\t%d\n",
1275 part_num
, part
->name
, part
->size
,
1276 part
->offset
, part
->mask_flags
);
1277 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1282 if (list_empty(&devices
))
1283 printf("no partitions defined\n");
1287 * Format and print out a partition list for each device from global device
1290 static void list_partitions(void)
1292 struct part_info
*part
;
1294 debug("\n---list_partitions---\n");
1295 print_partition_table();
1297 /* current_mtd_dev is not NULL only when we have non empty device list */
1298 if (current_mtd_dev
) {
1299 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
1301 printf("\nactive partition: %s%d,%d - (%s) 0x%08x @ 0x%08x\n",
1302 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1303 current_mtd_dev
->id
->num
, current_mtd_partnum
,
1304 part
->name
, part
->size
, part
->offset
);
1306 printf("could not get current partition info\n\n");
1310 printf("\ndefaults:\n");
1311 printf("mtdids : %s\n",
1312 mtdids_default
? mtdids_default
: "none");
1314 * Using printf() here results in printbuffer overflow
1315 * if default mtdparts string is greater than console
1316 * printbuffer. Use puts() to prevent system crashes.
1319 puts(mtdparts_default
? mtdparts_default
: "none");
1324 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1325 * corresponding device and verify partition number.
1327 * @param id string describing device and partition or partition name
1328 * @param dev pointer to the requested device (output)
1329 * @param part_num verified partition number (output)
1330 * @param part pointer to requested partition (output)
1331 * @return 0 on success, 1 otherwise
1333 int find_dev_and_part(const char *id
, struct mtd_device
**dev
,
1334 u8
*part_num
, struct part_info
**part
)
1336 struct list_head
*dentry
, *pentry
;
1337 u8 type
, dnum
, pnum
;
1340 debug("--- find_dev_and_part ---\nid = %s\n", id
);
1342 list_for_each(dentry
, &devices
) {
1344 *dev
= list_entry(dentry
, struct mtd_device
, link
);
1345 list_for_each(pentry
, &(*dev
)->parts
) {
1346 *part
= list_entry(pentry
, struct part_info
, link
);
1347 if (strcmp((*part
)->name
, id
) == 0)
1358 if (mtd_id_parse(p
, &p
, &type
, &dnum
) != 0)
1361 if ((*p
++ != ',') || (*p
== '\0')) {
1362 printf("no partition number specified\n");
1365 pnum
= simple_strtoul(p
, (char **)&p
, 0);
1367 printf("unexpected trailing character '%c'\n", *p
);
1371 if ((*dev
= device_find(type
, dnum
)) == NULL
) {
1372 printf("no such device %s%d\n", MTD_DEV_TYPE(type
), dnum
);
1376 if ((*part
= mtd_part_info(*dev
, pnum
)) == NULL
) {
1377 printf("no such partition\n");
1388 * Find and delete partition. For partition id format see find_dev_and_part().
1390 * @param id string describing device and partition
1391 * @return 0 on success, 1 otherwise
1393 static int delete_partition(const char *id
)
1396 struct mtd_device
*dev
;
1397 struct part_info
*part
;
1399 if (find_dev_and_part(id
, &dev
, &pnum
, &part
) == 0) {
1401 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08x@0x%08x\n",
1402 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
,
1403 part
->name
, part
->size
, part
->offset
);
1405 if (part_del(dev
, part
) != 0)
1408 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1409 printf("generated mtdparts too long, resetting to null\n");
1415 printf("partition %s not found\n", id
);
1419 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1421 * Increase the size of the given partition so that it's net size is at least
1422 * as large as the size member and such that the next partition would start on a
1423 * good block if it were adjacent to this partition.
1425 * @param mtd the mtd device
1426 * @param part the partition
1427 * @param next_offset pointer to the offset of the next partition after this
1428 * partition's size has been modified (output)
1430 static void spread_partition(struct mtd_info
*mtd
, struct part_info
*part
,
1431 uint64_t *next_offset
)
1433 uint64_t net_size
, padding_size
= 0;
1436 mtd_get_len_incl_bad(mtd
, part
->offset
, part
->size
, &net_size
,
1440 * Absorb bad blocks immediately following this
1441 * partition also into the partition, such that
1442 * the next partition starts with a good block.
1445 mtd_get_len_incl_bad(mtd
, part
->offset
+ net_size
,
1446 mtd
->erasesize
, &padding_size
, &truncated
);
1450 padding_size
-= mtd
->erasesize
;
1454 printf("truncated partition %s to %lld bytes\n", part
->name
,
1455 (uint64_t) net_size
+ padding_size
);
1458 part
->size
= net_size
+ padding_size
;
1459 *next_offset
= part
->offset
+ part
->size
;
1463 * Adjust all of the partition sizes, such that all partitions are at least
1464 * as big as their mtdparts environment variable sizes and they each start
1467 * @return 0 on success, 1 otherwise
1469 static int spread_partitions(void)
1471 struct list_head
*dentry
, *pentry
;
1472 struct mtd_device
*dev
;
1473 struct part_info
*part
;
1474 struct mtd_info
*mtd
;
1478 list_for_each(dentry
, &devices
) {
1479 dev
= list_entry(dentry
, struct mtd_device
, link
);
1481 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1486 list_for_each(pentry
, &dev
->parts
) {
1487 part
= list_entry(pentry
, struct part_info
, link
);
1489 debug("spread_partitions: device = %s%d, partition %d ="
1490 " (%s) 0x%08x@0x%08x\n",
1491 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1492 part_num
, part
->name
, part
->size
,
1495 if (cur_offs
> part
->offset
)
1496 part
->offset
= cur_offs
;
1498 spread_partition(mtd
, part
, &cur_offs
);
1506 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1507 printf("generated mtdparts too long, resetting to null\n");
1512 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1515 * Accept character string describing mtd partitions and call device_parse()
1516 * for each entry. Add created devices to the global devices list.
1518 * @param mtdparts string specifing mtd partitions
1519 * @return 0 on success, 1 otherwise
1521 static int parse_mtdparts(const char *const mtdparts
)
1523 const char *p
= mtdparts
;
1524 struct mtd_device
*dev
;
1526 char tmp_parts
[MTDPARTS_MAXLEN
];
1528 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p
);
1530 /* delete all devices and partitions */
1531 if (mtd_devices_init() != 0) {
1532 printf("could not initialise device list\n");
1536 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1537 if (gd
->flags
& GD_FLG_ENV_READY
) {
1538 p
= getenv("mtdparts");
1541 getenv_f("mtdparts", tmp_parts
, MTDPARTS_MAXLEN
);
1544 if (strncmp(p
, "mtdparts=", 9) != 0) {
1545 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1550 while (p
&& (*p
!= '\0')) {
1552 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1555 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1556 dev
->id
->num
, dev
->id
->mtd_id
);
1558 /* check if parsed device is already on the list */
1559 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1560 printf("device %s%d redefined, please correct mtdparts variable\n",
1561 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1565 list_add_tail(&dev
->link
, &devices
);
1569 device_delall(&devices
);
1577 * Parse provided string describing mtdids mapping (see file header for mtdids
1578 * variable format). Allocate memory for each entry and add all found entries
1579 * to the global mtdids list.
1581 * @param ids mapping string
1582 * @return 0 on success, 1 otherwise
1584 static int parse_mtdids(const char *const ids
)
1586 const char *p
= ids
;
1590 struct list_head
*entry
, *n
;
1591 struct mtdids
*id_tmp
;
1596 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids
);
1598 /* clean global mtdids list */
1599 list_for_each_safe(entry
, n
, &mtdids
) {
1600 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1601 debug("mtdids del: %d %d\n", id_tmp
->type
, id_tmp
->num
);
1606 INIT_LIST_HEAD(&mtdids
);
1608 while(p
&& (*p
!= '\0')) {
1611 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1612 if (mtd_id_parse(p
, &p
, &type
, &num
) != 0)
1616 printf("mtdids: incorrect <dev-num>\n");
1621 /* check if requested device exists */
1622 if (mtd_device_validate(type
, num
, &size
) != 0)
1625 /* locate <mtd-id> */
1627 if ((p
= strchr(mtd_id
, ',')) != NULL
) {
1628 mtd_id_len
= p
- mtd_id
+ 1;
1631 mtd_id_len
= strlen(mtd_id
) + 1;
1633 if (mtd_id_len
== 0) {
1634 printf("mtdids: no <mtd-id> identifier\n");
1638 /* check if this id is already on the list */
1639 int double_entry
= 0;
1640 list_for_each(entry
, &mtdids
) {
1641 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1642 if ((id_tmp
->type
== type
) && (id_tmp
->num
== num
)) {
1648 printf("device id %s%d redefined, please correct mtdids variable\n",
1649 MTD_DEV_TYPE(type
), num
);
1653 /* allocate mtdids structure */
1654 if (!(id
= (struct mtdids
*)malloc(sizeof(struct mtdids
) + mtd_id_len
))) {
1655 printf("out of memory\n");
1658 memset(id
, 0, sizeof(struct mtdids
) + mtd_id_len
);
1662 id
->mtd_id
= (char *)(id
+ 1);
1663 strncpy(id
->mtd_id
, mtd_id
, mtd_id_len
- 1);
1664 id
->mtd_id
[mtd_id_len
- 1] = '\0';
1665 INIT_LIST_HEAD(&id
->link
);
1667 debug("+ id %s%d\t%16d bytes\t%s\n",
1668 MTD_DEV_TYPE(id
->type
), id
->num
,
1669 id
->size
, id
->mtd_id
);
1671 list_add_tail(&id
->link
, &mtdids
);
1675 /* clean mtdids list and free allocated memory */
1676 list_for_each_safe(entry
, n
, &mtdids
) {
1677 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1688 * Parse and initialize global mtdids mapping and create global
1689 * device/partition list.
1691 * @return 0 on success, 1 otherwise
1693 int mtdparts_init(void)
1695 static int initialized
= 0;
1696 const char *ids
, *parts
;
1697 const char *current_partition
;
1699 char tmp_ep
[PARTITION_MAXLEN
];
1700 char tmp_parts
[MTDPARTS_MAXLEN
];
1702 debug("\n---mtdparts_init---\n");
1704 INIT_LIST_HEAD(&mtdids
);
1705 INIT_LIST_HEAD(&devices
);
1706 memset(last_ids
, 0, MTDIDS_MAXLEN
);
1707 memset(last_parts
, 0, MTDPARTS_MAXLEN
);
1708 memset(last_partition
, 0, PARTITION_MAXLEN
);
1713 ids
= getenv("mtdids");
1715 * The mtdparts variable tends to be long. If we need to access it
1716 * before the env is relocated, then we need to use our own stack
1717 * buffer. gd->env_buf will be too small.
1719 if (gd
->flags
& GD_FLG_ENV_READY
) {
1720 parts
= getenv("mtdparts");
1723 getenv_f("mtdparts", tmp_parts
, MTDPARTS_MAXLEN
);
1725 current_partition
= getenv("partition");
1727 /* save it for later parsing, cannot rely on current partition pointer
1728 * as 'partition' variable may be updated during init */
1730 if (current_partition
)
1731 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1733 debug("last_ids : %s\n", last_ids
);
1734 debug("env_ids : %s\n", ids
);
1735 debug("last_parts: %s\n", last_parts
);
1736 debug("env_parts : %s\n\n", parts
);
1738 debug("last_partition : %s\n", last_partition
);
1739 debug("env_partition : %s\n", current_partition
);
1741 /* if mtdids varible is empty try to use defaults */
1743 if (mtdids_default
) {
1744 debug("mtdids variable not defined, using default\n");
1745 ids
= mtdids_default
;
1746 setenv("mtdids", (char *)ids
);
1748 printf("mtdids not defined, no default present\n");
1752 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1753 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1757 /* do no try to use defaults when mtdparts variable is not defined,
1758 * just check the length */
1760 printf("mtdparts variable not set, see 'help mtdparts'\n");
1762 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1763 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1767 /* check if we have already parsed those mtdids */
1768 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1773 if (parse_mtdids(ids
) != 0) {
1778 /* ok it's good, save new ids */
1779 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1782 /* parse partitions if either mtdparts or mtdids were updated */
1783 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1784 if (parse_mtdparts(parts
) != 0)
1787 if (list_empty(&devices
)) {
1788 printf("mtdparts_init: no valid partitions\n");
1792 /* ok it's good, save new parts */
1793 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1795 /* reset first partition from first dev from the list as current */
1796 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1797 current_mtd_partnum
= 0;
1800 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1801 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1802 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1805 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1806 if (!parts
&& (last_parts
[0] != '\0'))
1807 return mtd_devices_init();
1809 /* do not process current partition if mtdparts variable is null */
1813 /* is current partition set in environment? if so, use it */
1814 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1815 struct part_info
*p
;
1816 struct mtd_device
*cdev
;
1819 debug("--- getting current partition: %s\n", tmp_ep
);
1821 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1822 current_mtd_dev
= cdev
;
1823 current_mtd_partnum
= pnum
;
1826 } else if (getenv("partition") == NULL
) {
1827 debug("no partition variable set, setting...\n");
1835 * Return pointer to the partition of a requested number from a requested
1838 * @param dev device that is to be searched for a partition
1839 * @param part_num requested partition number
1840 * @return pointer to the part_info, NULL otherwise
1842 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1844 struct list_head
*entry
;
1845 struct part_info
*part
;
1851 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1852 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1853 dev
->id
->num
, dev
->id
->mtd_id
);
1855 if (part_num
>= dev
->num_parts
) {
1856 printf("invalid partition number %d for device %s%d (%s)\n",
1857 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1858 dev
->id
->num
, dev
->id
->mtd_id
);
1862 /* locate partition number, return it */
1864 list_for_each(entry
, &dev
->parts
) {
1865 part
= list_entry(entry
, struct part_info
, link
);
1867 if (part_num
== num
++) {
1875 /***************************************************/
1876 /* U-boot commands */
1877 /***************************************************/
1878 /* command line only */
1880 * Routine implementing u-boot chpart command. Sets new current partition based
1881 * on the user supplied partition id. For partition id format see find_dev_and_part().
1883 * @param cmdtp command internal data
1884 * @param flag command flag
1885 * @param argc number of arguments supplied to the command
1886 * @param argv arguments list
1887 * @return 0 on success, 1 otherwise
1889 static int do_chpart(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1891 /* command line only */
1892 struct mtd_device
*dev
;
1893 struct part_info
*part
;
1896 if (mtdparts_init() !=0)
1900 printf("no partition id specified\n");
1904 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1907 current_mtd_dev
= dev
;
1908 current_mtd_partnum
= pnum
;
1911 printf("partition changed to %s%d,%d\n",
1912 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1918 * Routine implementing u-boot mtdparts command. Initialize/update default global
1919 * partition list and process user partition request (list, add, del).
1921 * @param cmdtp command internal data
1922 * @param flag command flag
1923 * @param argc number of arguments supplied to the command
1924 * @param argv arguments list
1925 * @return 0 on success, 1 otherwise
1927 static int do_mtdparts(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
1928 char * const argv
[])
1931 if (strcmp(argv
[1], "default") == 0) {
1932 setenv("mtdids", (char *)mtdids_default
);
1933 setenv("mtdparts", (char *)mtdparts_default
);
1934 setenv("partition", NULL
);
1938 } else if (strcmp(argv
[1], "delall") == 0) {
1939 /* this may be the first run, initialize lists if needed */
1942 setenv("mtdparts", NULL
);
1944 /* mtd_devices_init() calls current_save() */
1945 return mtd_devices_init();
1949 /* make sure we are in sync with env variables */
1950 if (mtdparts_init() != 0)
1958 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1959 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1960 #define PART_ADD_DESC_MAXLEN 64
1961 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1962 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1963 struct mtd_info
*mtd
;
1964 uint64_t next_offset
;
1967 struct mtd_device
*dev
;
1968 struct mtd_device
*dev_tmp
;
1970 struct part_info
*p
;
1972 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
1975 if ((id
= id_find(type
, num
)) == NULL
) {
1976 printf("no such device %s defined in mtdids variable\n", argv
[2]);
1980 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
1981 len
+= strlen(argv
[3]); /* size@offset */
1982 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
1983 if (argv
[5] && (strlen(argv
[5]) == 2))
1984 len
+= 2; /* 'ro' */
1986 if (len
>= PART_ADD_DESC_MAXLEN
) {
1987 printf("too long partition description\n");
1990 sprintf(tmpbuf
, "%s:%s(%s)%s",
1991 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
1992 debug("add tmpbuf: %s\n", tmpbuf
);
1994 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
1997 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1998 dev
->id
->num
, dev
->id
->mtd_id
);
2000 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2002 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2003 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2006 if (!strcmp(&argv
[1][3], ".spread")) {
2007 spread_partition(mtd
, p
, &next_offset
);
2008 debug("increased %s to %d bytes\n", p
->name
, p
->size
);
2012 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2013 if (dev_tmp
== NULL
) {
2015 } else if (part_add(dev_tmp
, p
) != 0) {
2016 /* merge new partition with existing ones*/
2021 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2022 printf("generated mtdparts too long, resetting to null\n");
2029 /* mtdparts del part-id */
2030 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2031 debug("del: part-id = %s\n", argv
[2]);
2033 return delete_partition(argv
[2]);
2036 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2037 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2038 return spread_partitions();
2039 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2041 return CMD_RET_USAGE
;
2044 /***************************************************/
2046 chpart
, 2, 0, do_chpart
,
2047 "change active partition",
2049 " - change active partition (e.g. part-id = nand0,1)"
2052 #ifdef CONFIG_SYS_LONGHELP
2053 static char mtdparts_help_text
[] =
2055 " - list partition table\n"
2057 " - delete all partitions\n"
2058 "mtdparts del part-id\n"
2059 " - delete partition (e.g. part-id = nand0,1)\n"
2060 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2061 " - add partition\n"
2062 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2063 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2064 " - add partition, padding size by skipping bad blocks\n"
2066 "mtdparts default\n"
2067 " - reset partition table to defaults\n"
2068 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2070 " - adjust the sizes of the partitions so they are\n"
2071 " at least as big as the mtdparts variable specifies\n"
2072 " and they each start on a good block\n\n"
2075 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2077 "this command uses three environment variables:\n\n"
2078 "'partition' - keeps current partition identifier\n\n"
2079 "partition := <part-id>\n"
2080 "<part-id> := <dev-id>,part_num\n\n"
2081 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2082 "mtdids=<idmap>[,<idmap>,...]\n\n"
2083 "<idmap> := <dev-id>=<mtd-id>\n"
2084 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2085 "<dev-num> := mtd device number, 0...\n"
2086 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2087 "'mtdparts' - partition list\n\n"
2088 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2089 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2090 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2091 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2092 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2093 "<offset> := partition start offset within the device\n"
2094 "<name> := '(' NAME ')'\n"
2095 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2099 mtdparts
, 6, 0, do_mtdparts
,
2100 "define flash/nand partitions", mtdparts_help_text
2102 /***************************************************/