]>
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 (~0llu)
98 /* special offset value, it is used when not provided by user
100 * this value is used temporarily during parsing, later such offests
101 * are recalculated */
102 #define OFFSET_NOT_SPECIFIED (~0llu)
104 /* minimum partition size */
105 #define MIN_PART_SIZE 4096
107 /* this flag needs to be set in part_info struct mask_flags
108 * field for read-only partitions */
109 #define MTD_WRITEABLE_CMD 1
111 /* default values for mtdids and mtdparts variables */
112 #if defined(MTDIDS_DEFAULT)
113 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 u64
memsize_parse (const char *const ptr
, const char **retptr
)
165 u64 ret
= simple_strtoull(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
, u64 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
, "%llug", size
/SIZE_GB
);
204 else if ((size
% SIZE_MB
) == 0)
205 sprintf(buf
, "%llum", size
/SIZE_MB
);
206 else if (size
% SIZE_KB
== 0)
207 sprintf(buf
, "%lluk", size
/SIZE_KB
);
209 sprintf(buf
, "%llu", 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
;
315 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
318 part
->sector_size
= mtd
->erasesize
;
320 if (!mtd
->numeraseregions
) {
322 * Only one eraseregion (NAND, OneNAND or uniform NOR),
323 * checking for alignment is easy here
325 offset
= part
->offset
;
326 if (do_div(offset
, mtd
->erasesize
)) {
327 printf("%s%d: partition (%s) start offset"
328 "alignment incorrect\n",
329 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
334 if (do_div(size
, mtd
->erasesize
)) {
335 printf("%s%d: partition (%s) size alignment incorrect\n",
336 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
341 * Multiple eraseregions (non-uniform NOR),
342 * checking for alignment is more complex here
345 /* Check start alignment */
346 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
347 start
= mtd
->eraseregions
[i
].offset
;
348 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
349 if (part
->offset
== start
)
351 start
+= mtd
->eraseregions
[i
].erasesize
;
355 printf("%s%d: partition (%s) start offset alignment incorrect\n",
356 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
361 /* Check end/size alignment */
362 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
363 start
= mtd
->eraseregions
[i
].offset
;
364 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
365 if ((part
->offset
+ part
->size
) == start
)
367 start
+= mtd
->eraseregions
[i
].erasesize
;
370 /* Check last sector alignment */
371 if ((part
->offset
+ part
->size
) == start
)
374 printf("%s%d: partition (%s) size alignment incorrect\n",
375 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
387 * Performs sanity check for supplied partition. Offset and size are
388 * verified to be within valid range. Partition type is checked and
389 * part_validate_eraseblock() is called with the argument of part.
391 * @param id of the parent device
392 * @param part partition to validate
393 * @return 0 if partition is valid, 1 otherwise
395 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
397 if (part
->size
== SIZE_REMAINING
)
398 part
->size
= id
->size
- part
->offset
;
400 if (part
->offset
> id
->size
) {
401 printf("%s: offset %08llx beyond flash size %08llx\n",
402 id
->mtd_id
, part
->offset
, id
->size
);
406 if ((part
->offset
+ part
->size
) <= part
->offset
) {
407 printf("%s%d: partition (%s) size too big\n",
408 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
412 if (part
->offset
+ part
->size
> id
->size
) {
413 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
418 * Now we need to check if the partition starts and ends on
419 * sector (eraseblock) regions
421 return part_validate_eraseblock(id
, part
);
425 * Delete selected partition from the partition list of the specified device.
427 * @param dev device to delete partition from
428 * @param part partition to delete
429 * @return 0 on success, 1 otherwise
431 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
433 u8 current_save_needed
= 0;
435 /* if there is only one partition, remove whole device */
436 if (dev
->num_parts
== 1)
437 return device_del(dev
);
439 /* otherwise just delete this partition */
441 if (dev
== current_mtd_dev
) {
442 /* we are modyfing partitions for the current device,
444 struct part_info
*curr_pi
;
445 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
448 if (curr_pi
== part
) {
449 printf("current partition deleted, resetting current to 0\n");
450 current_mtd_partnum
= 0;
451 } else if (part
->offset
<= curr_pi
->offset
) {
452 current_mtd_partnum
--;
454 current_save_needed
= 1;
458 list_del(&part
->link
);
462 if (current_save_needed
> 0)
471 * Delete all partitions from parts head list, free memory.
473 * @param head list of partitions to delete
475 static void part_delall(struct list_head
*head
)
477 struct list_head
*entry
, *n
;
478 struct part_info
*part_tmp
;
480 /* clean tmp_list and free allocated memory */
481 list_for_each_safe(entry
, n
, head
) {
482 part_tmp
= list_entry(entry
, struct part_info
, link
);
490 * Add new partition to the supplied partition list. Make sure partitions are
491 * sorted by offset in ascending order.
493 * @param head list this partition is to be added to
494 * @param new partition to be added
496 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
498 struct list_head
*entry
;
499 struct part_info
*new_pi
, *curr_pi
;
501 /* link partition to parrent dev */
504 if (list_empty(&dev
->parts
)) {
505 debug("part_sort_add: list empty\n");
506 list_add(&part
->link
, &dev
->parts
);
512 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
514 /* get current partition info if we are updating current device */
516 if (dev
== current_mtd_dev
)
517 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
519 list_for_each(entry
, &dev
->parts
) {
520 struct part_info
*pi
;
522 pi
= list_entry(entry
, struct part_info
, link
);
524 /* be compliant with kernel cmdline, allow only one partition at offset zero */
525 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
526 printf("cannot add second partition at offset 0\n");
530 if (new_pi
->offset
<= pi
->offset
) {
531 list_add_tail(&part
->link
, entry
);
534 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
535 /* we are modyfing partitions for the current
536 * device, update current */
537 current_mtd_partnum
++;
546 list_add_tail(&part
->link
, &dev
->parts
);
553 * Add provided partition to the partition list of a given device.
555 * @param dev device to which partition is added
556 * @param part partition to be added
557 * @return 0 on success, 1 otherwise
559 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
561 /* verify alignment and size */
562 if (part_validate(dev
->id
, part
) != 0)
565 /* partition is ok, add it to the list */
566 if (part_sort_add(dev
, part
) != 0)
573 * Parse one partition definition, allocate memory and return pointer to this
574 * location in retpart.
576 * @param partdef pointer to the partition definition string i.e. <part-def>
577 * @param ret output pointer to next char after parse completes (output)
578 * @param retpart pointer to the allocated partition (output)
579 * @return 0 on success, 1 otherwise
581 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
583 struct part_info
*part
;
588 unsigned int mask_flags
;
595 /* fetch the partition size */
597 /* assign all remaining space to this partition */
598 debug("'-': remaining size assigned\n");
599 size
= SIZE_REMAINING
;
602 size
= memsize_parse(p
, &p
);
603 if (size
< MIN_PART_SIZE
) {
604 printf("partition size too small (%llx)\n", size
);
609 /* check for offset */
610 offset
= OFFSET_NOT_SPECIFIED
;
613 offset
= memsize_parse(p
, &p
);
616 /* now look for the name */
619 if ((p
= strchr(name
, ')')) == NULL
) {
620 printf("no closing ) found in partition name\n");
623 name_len
= p
- name
+ 1;
624 if ((name_len
- 1) == 0) {
625 printf("empty partition name\n");
630 /* 0x00000000@0x00000000 */
635 /* test for options */
637 if (strncmp(p
, "ro", 2) == 0) {
638 mask_flags
|= MTD_WRITEABLE_CMD
;
642 /* check for next partition definition */
644 if (size
== SIZE_REMAINING
) {
646 printf("no partitions allowed after a fill-up partition\n");
650 } else if ((*p
== ';') || (*p
== '\0')) {
653 printf("unexpected character '%c' at the end of partition\n", *p
);
658 /* allocate memory */
659 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
661 printf("out of memory\n");
664 memset(part
, 0, sizeof(struct part_info
) + name_len
);
666 part
->offset
= offset
;
667 part
->mask_flags
= mask_flags
;
668 part
->name
= (char *)(part
+ 1);
671 /* copy user provided name */
672 strncpy(part
->name
, name
, name_len
- 1);
675 /* auto generated name in form of size@offset */
676 sprintf(part
->name
, "0x%08llx@0x%08llx", size
, offset
);
680 part
->name
[name_len
- 1] = '\0';
681 INIT_LIST_HEAD(&part
->link
);
683 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
684 part
->name
, part
->size
,
685 part
->offset
, part
->mask_flags
);
692 * Check device number to be within valid range for given device type.
694 * @param type mtd type
695 * @param num mtd number
696 * @param size a pointer to the size of the mtd device (output)
697 * @return 0 if device is valid, 1 otherwise
699 static int mtd_device_validate(u8 type
, u8 num
, u64
*size
)
701 struct mtd_info
*mtd
= NULL
;
703 if (get_mtd_info(type
, num
, &mtd
))
712 * Delete all mtd devices from a supplied devices list, free memory allocated for
713 * each device and delete all device partitions.
715 * @return 0 on success, 1 otherwise
717 static int device_delall(struct list_head
*head
)
719 struct list_head
*entry
, *n
;
720 struct mtd_device
*dev_tmp
;
722 /* clean devices list */
723 list_for_each_safe(entry
, n
, head
) {
724 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
726 part_delall(&dev_tmp
->parts
);
729 INIT_LIST_HEAD(&devices
);
735 * If provided device exists it's partitions are deleted, device is removed
736 * from device list and device memory is freed.
738 * @param dev device to be deleted
739 * @return 0 on success, 1 otherwise
741 static int device_del(struct mtd_device
*dev
)
743 part_delall(&dev
->parts
);
744 list_del(&dev
->link
);
747 if (dev
== current_mtd_dev
) {
748 /* we just deleted current device */
749 if (list_empty(&devices
)) {
750 current_mtd_dev
= NULL
;
752 /* reset first partition from first dev from the
753 * devices list as current */
754 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
755 current_mtd_partnum
= 0;
766 * Search global device list and return pointer to the device of type and num
769 * @param type device type
770 * @param num device number
771 * @return NULL if requested device does not exist
773 struct mtd_device
*device_find(u8 type
, u8 num
)
775 struct list_head
*entry
;
776 struct mtd_device
*dev_tmp
;
778 list_for_each(entry
, &devices
) {
779 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
781 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
789 * Add specified device to the global device list.
791 * @param dev device to be added
793 static void device_add(struct mtd_device
*dev
)
795 u8 current_save_needed
= 0;
797 if (list_empty(&devices
)) {
798 current_mtd_dev
= dev
;
799 current_mtd_partnum
= 0;
800 current_save_needed
= 1;
803 list_add_tail(&dev
->link
, &devices
);
805 if (current_save_needed
> 0)
812 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
813 * return pointer to the device structure.
815 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
816 * @param ret output pointer to next char after parse completes (output)
817 * @param retdev pointer to the allocated device (output)
818 * @return 0 on success, 1 otherwise
820 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
822 struct mtd_device
*dev
;
823 struct part_info
*part
;
826 unsigned int mtd_id_len
;
830 struct list_head
*entry
, *n
;
835 debug("===device_parse===\n");
844 mtd_id
= p
= mtd_dev
;
845 if (!(p
= strchr(mtd_id
, ':'))) {
846 printf("no <mtd-id> identifier\n");
849 mtd_id_len
= p
- mtd_id
+ 1;
852 /* verify if we have a valid device specified */
853 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
854 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
859 pend
= strchr(p
, ';');
861 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
862 id
->type
, MTD_DEV_TYPE(id
->type
),
863 id
->num
, id
->mtd_id
);
864 debug("parsing partitions %.*s\n", (pend
? pend
- p
: strlen(p
)), p
);
867 /* parse partitions */
871 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
872 /* if device already exists start at the end of the last partition */
873 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
874 offset
= part
->offset
+ part
->size
;
877 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
879 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
882 /* calculate offset when not specified */
883 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
884 part
->offset
= offset
;
886 offset
= part
->offset
;
888 /* verify alignment and size */
889 if (part_validate(id
, part
) != 0)
892 offset
+= part
->size
;
894 /* partition is ok, add it to the list */
895 list_add_tail(&part
->link
, &tmp_list
);
900 part_delall(&tmp_list
);
904 if (num_parts
== 0) {
905 printf("no partitions for device %s%d (%s)\n",
906 MTD_DEV_TYPE(id
->type
), id
->num
, id
->mtd_id
);
910 debug("\ntotal partitions: %d\n", num_parts
);
912 /* check for next device presence */
917 } else if (*p
== '\0') {
921 printf("unexpected character '%c' at the end of device\n", *p
);
928 /* allocate memory for mtd_device structure */
929 if ((dev
= (struct mtd_device
*)malloc(sizeof(struct mtd_device
))) == NULL
) {
930 printf("out of memory\n");
933 memset(dev
, 0, sizeof(struct mtd_device
));
935 dev
->num_parts
= 0; /* part_sort_add increments num_parts */
936 INIT_LIST_HEAD(&dev
->parts
);
937 INIT_LIST_HEAD(&dev
->link
);
939 /* move partitions from tmp_list to dev->parts */
940 list_for_each_safe(entry
, n
, &tmp_list
) {
941 part
= list_entry(entry
, struct part_info
, link
);
943 if (part_sort_add(dev
, part
) != 0) {
956 * Initialize global device list.
958 * @return 0 on success, 1 otherwise
960 static int mtd_devices_init(void)
962 last_parts
[0] = '\0';
963 current_mtd_dev
= NULL
;
966 return device_delall(&devices
);
970 * Search global mtdids list and find id of requested type and number.
972 * @return pointer to the id if it exists, NULL otherwise
974 static struct mtdids
* id_find(u8 type
, u8 num
)
976 struct list_head
*entry
;
979 list_for_each(entry
, &mtdids
) {
980 id
= list_entry(entry
, struct mtdids
, link
);
982 if ((id
->type
== type
) && (id
->num
== num
))
990 * Search global mtdids list and find id of a requested mtd_id.
992 * Note: first argument is not null terminated.
994 * @param mtd_id string containing requested mtd_id
995 * @param mtd_id_len length of supplied mtd_id
996 * @return pointer to the id if it exists, NULL otherwise
998 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
)
1000 struct list_head
*entry
;
1003 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1004 mtd_id_len
, mtd_id
, mtd_id_len
);
1006 list_for_each(entry
, &mtdids
) {
1007 id
= list_entry(entry
, struct mtdids
, link
);
1009 debug("entry: '%s' (len = %d)\n",
1010 id
->mtd_id
, strlen(id
->mtd_id
));
1012 if (mtd_id_len
!= strlen(id
->mtd_id
))
1014 if (strncmp(id
->mtd_id
, mtd_id
, mtd_id_len
) == 0)
1022 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
1023 * return device type and number.
1025 * @param id string describing device id
1026 * @param ret_id output pointer to next char after parse completes (output)
1027 * @param dev_type parsed device type (output)
1028 * @param dev_num parsed device number (output)
1029 * @return 0 on success, 1 otherwise
1031 int mtd_id_parse(const char *id
, const char **ret_id
, u8
*dev_type
,
1037 if (strncmp(p
, "nand", 4) == 0) {
1038 *dev_type
= MTD_DEV_TYPE_NAND
;
1040 } else if (strncmp(p
, "nor", 3) == 0) {
1041 *dev_type
= MTD_DEV_TYPE_NOR
;
1043 } else if (strncmp(p
, "onenand", 7) == 0) {
1044 *dev_type
= MTD_DEV_TYPE_ONENAND
;
1047 printf("incorrect device type in %s\n", id
);
1052 printf("incorrect device number in %s\n", id
);
1056 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1063 * Process all devices and generate corresponding mtdparts string describing
1064 * all partitions on all devices.
1066 * @param buf output buffer holding generated mtdparts string (output)
1067 * @param buflen buffer size
1068 * @return 0 on success, 1 otherwise
1070 static int generate_mtdparts(char *buf
, u32 buflen
)
1072 struct list_head
*pentry
, *dentry
;
1073 struct mtd_device
*dev
;
1074 struct part_info
*part
, *prev_part
;
1079 u32 maxlen
= buflen
- 1;
1081 debug("--- generate_mtdparts ---\n");
1083 if (list_empty(&devices
)) {
1088 sprintf(p
, "mtdparts=");
1091 list_for_each(dentry
, &devices
) {
1092 dev
= list_entry(dentry
, struct mtd_device
, link
);
1095 len
= strlen(dev
->id
->mtd_id
) + 1;
1098 memcpy(p
, dev
->id
->mtd_id
, len
- 1);
1103 /* format partitions */
1106 list_for_each(pentry
, &dev
->parts
) {
1107 part
= list_entry(pentry
, struct part_info
, link
);
1109 offset
= part
->offset
;
1112 /* partition size */
1113 memsize_format(tmpbuf
, size
);
1114 len
= strlen(tmpbuf
);
1117 memcpy(p
, tmpbuf
, len
);
1122 /* add offset only when there is a gap between
1124 if ((!prev_part
&& (offset
!= 0)) ||
1125 (prev_part
&& ((prev_part
->offset
+ prev_part
->size
) != part
->offset
))) {
1127 memsize_format(tmpbuf
, offset
);
1128 len
= strlen(tmpbuf
) + 1;
1132 memcpy(p
, tmpbuf
, len
- 1);
1137 /* copy name only if user supplied */
1138 if(!part
->auto_name
) {
1139 len
= strlen(part
->name
) + 2;
1144 memcpy(p
, part
->name
, len
- 2);
1151 if (part
->mask_flags
&& MTD_WRITEABLE_CMD
) {
1160 /* print ',' separator if there are other partitions
1162 if (dev
->num_parts
> part_cnt
) {
1170 /* print ';' separator if there are other devices following */
1171 if (dentry
->next
!= &devices
) {
1179 /* we still have at least one char left, as we decremented maxlen at
1186 last_parts
[0] = '\0';
1191 * Call generate_mtdparts to process all devices and generate corresponding
1192 * mtdparts string, save it in mtdparts environment variable.
1194 * @param buf output buffer holding generated mtdparts string (output)
1195 * @param buflen buffer size
1196 * @return 0 on success, 1 otherwise
1198 static int generate_mtdparts_save(char *buf
, u32 buflen
)
1202 ret
= generate_mtdparts(buf
, buflen
);
1204 if ((buf
[0] != '\0') && (ret
== 0))
1205 setenv("mtdparts", buf
);
1207 setenv("mtdparts", NULL
);
1212 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1214 * Get the net size (w/o bad blocks) of the given partition.
1216 * @param mtd the mtd info
1217 * @param part the partition
1218 * @return the calculated net size of this partition
1220 static uint64_t net_part_size(struct mtd_info
*mtd
, struct part_info
*part
)
1222 uint64_t i
, net_size
= 0;
1224 if (!mtd
->block_isbad
)
1227 for (i
= 0; i
< part
->size
; i
+= mtd
->erasesize
) {
1228 if (!mtd
->block_isbad(mtd
, part
->offset
+ i
))
1229 net_size
+= mtd
->erasesize
;
1236 static void print_partition_table(void)
1238 struct list_head
*dentry
, *pentry
;
1239 struct part_info
*part
;
1240 struct mtd_device
*dev
;
1243 list_for_each(dentry
, &devices
) {
1244 dev
= list_entry(dentry
, struct mtd_device
, link
);
1245 /* list partitions for given device */
1247 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1248 struct mtd_info
*mtd
;
1250 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1253 printf("\ndevice %s%d <%s>, # parts = %d\n",
1254 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1255 dev
->id
->mtd_id
, dev
->num_parts
);
1256 printf(" #: name\t\tsize\t\tnet size\toffset\t\tmask_flags\n");
1258 list_for_each(pentry
, &dev
->parts
) {
1262 part
= list_entry(pentry
, struct part_info
, link
);
1263 net_size
= net_part_size(mtd
, part
);
1264 size_note
= part
->size
== net_size
? " " : " (!)";
1265 printf("%2d: %-20s0x%08x\t0x%08x%s\t0x%08x\t%d\n",
1266 part_num
, part
->name
, part
->size
,
1267 net_size
, size_note
, part
->offset
,
1269 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1270 printf("\ndevice %s%d <%s>, # parts = %d\n",
1271 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1272 dev
->id
->mtd_id
, dev
->num_parts
);
1273 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1275 list_for_each(pentry
, &dev
->parts
) {
1276 part
= list_entry(pentry
, struct part_info
, link
);
1277 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1278 part_num
, part
->name
, part
->size
,
1279 part
->offset
, part
->mask_flags
);
1280 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1285 if (list_empty(&devices
))
1286 printf("no partitions defined\n");
1290 * Format and print out a partition list for each device from global device
1293 static void list_partitions(void)
1295 struct part_info
*part
;
1297 debug("\n---list_partitions---\n");
1298 print_partition_table();
1300 /* current_mtd_dev is not NULL only when we have non empty device list */
1301 if (current_mtd_dev
) {
1302 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
1304 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1305 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1306 current_mtd_dev
->id
->num
, current_mtd_partnum
,
1307 part
->name
, part
->size
, part
->offset
);
1309 printf("could not get current partition info\n\n");
1313 printf("\ndefaults:\n");
1314 printf("mtdids : %s\n",
1315 mtdids_default
? mtdids_default
: "none");
1317 * Using printf() here results in printbuffer overflow
1318 * if default mtdparts string is greater than console
1319 * printbuffer. Use puts() to prevent system crashes.
1322 puts(mtdparts_default
? mtdparts_default
: "none");
1327 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1328 * corresponding device and verify partition number.
1330 * @param id string describing device and partition or partition name
1331 * @param dev pointer to the requested device (output)
1332 * @param part_num verified partition number (output)
1333 * @param part pointer to requested partition (output)
1334 * @return 0 on success, 1 otherwise
1336 int find_dev_and_part(const char *id
, struct mtd_device
**dev
,
1337 u8
*part_num
, struct part_info
**part
)
1339 struct list_head
*dentry
, *pentry
;
1340 u8 type
, dnum
, pnum
;
1343 debug("--- find_dev_and_part ---\nid = %s\n", id
);
1345 list_for_each(dentry
, &devices
) {
1347 *dev
= list_entry(dentry
, struct mtd_device
, link
);
1348 list_for_each(pentry
, &(*dev
)->parts
) {
1349 *part
= list_entry(pentry
, struct part_info
, link
);
1350 if (strcmp((*part
)->name
, id
) == 0)
1361 if (mtd_id_parse(p
, &p
, &type
, &dnum
) != 0)
1364 if ((*p
++ != ',') || (*p
== '\0')) {
1365 printf("no partition number specified\n");
1368 pnum
= simple_strtoul(p
, (char **)&p
, 0);
1370 printf("unexpected trailing character '%c'\n", *p
);
1374 if ((*dev
= device_find(type
, dnum
)) == NULL
) {
1375 printf("no such device %s%d\n", MTD_DEV_TYPE(type
), dnum
);
1379 if ((*part
= mtd_part_info(*dev
, pnum
)) == NULL
) {
1380 printf("no such partition\n");
1391 * Find and delete partition. For partition id format see find_dev_and_part().
1393 * @param id string describing device and partition
1394 * @return 0 on success, 1 otherwise
1396 static int delete_partition(const char *id
)
1399 struct mtd_device
*dev
;
1400 struct part_info
*part
;
1402 if (find_dev_and_part(id
, &dev
, &pnum
, &part
) == 0) {
1404 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1405 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
,
1406 part
->name
, part
->size
, part
->offset
);
1408 if (part_del(dev
, part
) != 0)
1411 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1412 printf("generated mtdparts too long, resetting to null\n");
1418 printf("partition %s not found\n", id
);
1422 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1424 * Increase the size of the given partition so that it's net size is at least
1425 * as large as the size member and such that the next partition would start on a
1426 * good block if it were adjacent to this partition.
1428 * @param mtd the mtd device
1429 * @param part the partition
1430 * @param next_offset pointer to the offset of the next partition after this
1431 * partition's size has been modified (output)
1433 static void spread_partition(struct mtd_info
*mtd
, struct part_info
*part
,
1434 uint64_t *next_offset
)
1436 uint64_t net_size
, padding_size
= 0;
1439 mtd_get_len_incl_bad(mtd
, part
->offset
, part
->size
, &net_size
,
1443 * Absorb bad blocks immediately following this
1444 * partition also into the partition, such that
1445 * the next partition starts with a good block.
1448 mtd_get_len_incl_bad(mtd
, part
->offset
+ net_size
,
1449 mtd
->erasesize
, &padding_size
, &truncated
);
1453 padding_size
-= mtd
->erasesize
;
1457 printf("truncated partition %s to %lld bytes\n", part
->name
,
1458 (uint64_t) net_size
+ padding_size
);
1461 part
->size
= net_size
+ padding_size
;
1462 *next_offset
= part
->offset
+ part
->size
;
1466 * Adjust all of the partition sizes, such that all partitions are at least
1467 * as big as their mtdparts environment variable sizes and they each start
1470 * @return 0 on success, 1 otherwise
1472 static int spread_partitions(void)
1474 struct list_head
*dentry
, *pentry
;
1475 struct mtd_device
*dev
;
1476 struct part_info
*part
;
1477 struct mtd_info
*mtd
;
1481 list_for_each(dentry
, &devices
) {
1482 dev
= list_entry(dentry
, struct mtd_device
, link
);
1484 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1489 list_for_each(pentry
, &dev
->parts
) {
1490 part
= list_entry(pentry
, struct part_info
, link
);
1492 debug("spread_partitions: device = %s%d, partition %d ="
1493 " (%s) 0x%08x@0x%08x\n",
1494 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1495 part_num
, part
->name
, part
->size
,
1498 if (cur_offs
> part
->offset
)
1499 part
->offset
= cur_offs
;
1501 spread_partition(mtd
, part
, &cur_offs
);
1509 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1510 printf("generated mtdparts too long, resetting to null\n");
1515 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1518 * Accept character string describing mtd partitions and call device_parse()
1519 * for each entry. Add created devices to the global devices list.
1521 * @param mtdparts string specifing mtd partitions
1522 * @return 0 on success, 1 otherwise
1524 static int parse_mtdparts(const char *const mtdparts
)
1526 const char *p
= mtdparts
;
1527 struct mtd_device
*dev
;
1529 char tmp_parts
[MTDPARTS_MAXLEN
];
1531 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", p
);
1533 /* delete all devices and partitions */
1534 if (mtd_devices_init() != 0) {
1535 printf("could not initialise device list\n");
1539 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1540 if (gd
->flags
& GD_FLG_ENV_READY
) {
1541 p
= getenv("mtdparts");
1544 getenv_f("mtdparts", tmp_parts
, MTDPARTS_MAXLEN
);
1547 if (strncmp(p
, "mtdparts=", 9) != 0) {
1548 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1553 while (p
&& (*p
!= '\0')) {
1555 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1558 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1559 dev
->id
->num
, dev
->id
->mtd_id
);
1561 /* check if parsed device is already on the list */
1562 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1563 printf("device %s%d redefined, please correct mtdparts variable\n",
1564 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1568 list_add_tail(&dev
->link
, &devices
);
1572 device_delall(&devices
);
1580 * Parse provided string describing mtdids mapping (see file header for mtdids
1581 * variable format). Allocate memory for each entry and add all found entries
1582 * to the global mtdids list.
1584 * @param ids mapping string
1585 * @return 0 on success, 1 otherwise
1587 static int parse_mtdids(const char *const ids
)
1589 const char *p
= ids
;
1593 struct list_head
*entry
, *n
;
1594 struct mtdids
*id_tmp
;
1599 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids
);
1601 /* clean global mtdids list */
1602 list_for_each_safe(entry
, n
, &mtdids
) {
1603 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1604 debug("mtdids del: %d %d\n", id_tmp
->type
, id_tmp
->num
);
1609 INIT_LIST_HEAD(&mtdids
);
1611 while(p
&& (*p
!= '\0')) {
1614 /* parse 'nor'|'nand'|'onenand'<dev-num> */
1615 if (mtd_id_parse(p
, &p
, &type
, &num
) != 0)
1619 printf("mtdids: incorrect <dev-num>\n");
1624 /* check if requested device exists */
1625 if (mtd_device_validate(type
, num
, &size
) != 0)
1628 /* locate <mtd-id> */
1630 if ((p
= strchr(mtd_id
, ',')) != NULL
) {
1631 mtd_id_len
= p
- mtd_id
+ 1;
1634 mtd_id_len
= strlen(mtd_id
) + 1;
1636 if (mtd_id_len
== 0) {
1637 printf("mtdids: no <mtd-id> identifier\n");
1641 /* check if this id is already on the list */
1642 int double_entry
= 0;
1643 list_for_each(entry
, &mtdids
) {
1644 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1645 if ((id_tmp
->type
== type
) && (id_tmp
->num
== num
)) {
1651 printf("device id %s%d redefined, please correct mtdids variable\n",
1652 MTD_DEV_TYPE(type
), num
);
1656 /* allocate mtdids structure */
1657 if (!(id
= (struct mtdids
*)malloc(sizeof(struct mtdids
) + mtd_id_len
))) {
1658 printf("out of memory\n");
1661 memset(id
, 0, sizeof(struct mtdids
) + mtd_id_len
);
1665 id
->mtd_id
= (char *)(id
+ 1);
1666 strncpy(id
->mtd_id
, mtd_id
, mtd_id_len
- 1);
1667 id
->mtd_id
[mtd_id_len
- 1] = '\0';
1668 INIT_LIST_HEAD(&id
->link
);
1670 debug("+ id %s%d\t%16lld bytes\t%s\n",
1671 MTD_DEV_TYPE(id
->type
), id
->num
,
1672 id
->size
, id
->mtd_id
);
1674 list_add_tail(&id
->link
, &mtdids
);
1678 /* clean mtdids list and free allocated memory */
1679 list_for_each_safe(entry
, n
, &mtdids
) {
1680 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1691 * Parse and initialize global mtdids mapping and create global
1692 * device/partition list.
1694 * @return 0 on success, 1 otherwise
1696 int mtdparts_init(void)
1698 static int initialized
= 0;
1699 const char *ids
, *parts
;
1700 const char *current_partition
;
1702 char tmp_ep
[PARTITION_MAXLEN
];
1703 char tmp_parts
[MTDPARTS_MAXLEN
];
1705 debug("\n---mtdparts_init---\n");
1707 INIT_LIST_HEAD(&mtdids
);
1708 INIT_LIST_HEAD(&devices
);
1709 memset(last_ids
, 0, MTDIDS_MAXLEN
);
1710 memset(last_parts
, 0, MTDPARTS_MAXLEN
);
1711 memset(last_partition
, 0, PARTITION_MAXLEN
);
1716 ids
= getenv("mtdids");
1718 * The mtdparts variable tends to be long. If we need to access it
1719 * before the env is relocated, then we need to use our own stack
1720 * buffer. gd->env_buf will be too small.
1722 if (gd
->flags
& GD_FLG_ENV_READY
) {
1723 parts
= getenv("mtdparts");
1726 getenv_f("mtdparts", tmp_parts
, MTDPARTS_MAXLEN
);
1728 current_partition
= getenv("partition");
1730 /* save it for later parsing, cannot rely on current partition pointer
1731 * as 'partition' variable may be updated during init */
1733 if (current_partition
)
1734 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1736 debug("last_ids : %s\n", last_ids
);
1737 debug("env_ids : %s\n", ids
);
1738 debug("last_parts: %s\n", last_parts
);
1739 debug("env_parts : %s\n\n", parts
);
1741 debug("last_partition : %s\n", last_partition
);
1742 debug("env_partition : %s\n", current_partition
);
1744 /* if mtdids varible is empty try to use defaults */
1746 if (mtdids_default
) {
1747 debug("mtdids variable not defined, using default\n");
1748 ids
= mtdids_default
;
1749 setenv("mtdids", (char *)ids
);
1751 printf("mtdids not defined, no default present\n");
1755 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1756 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1760 /* do no try to use defaults when mtdparts variable is not defined,
1761 * just check the length */
1763 printf("mtdparts variable not set, see 'help mtdparts'\n");
1765 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1766 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1770 /* check if we have already parsed those mtdids */
1771 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1776 if (parse_mtdids(ids
) != 0) {
1781 /* ok it's good, save new ids */
1782 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1785 /* parse partitions if either mtdparts or mtdids were updated */
1786 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1787 if (parse_mtdparts(parts
) != 0)
1790 if (list_empty(&devices
)) {
1791 printf("mtdparts_init: no valid partitions\n");
1795 /* ok it's good, save new parts */
1796 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1798 /* reset first partition from first dev from the list as current */
1799 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1800 current_mtd_partnum
= 0;
1803 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1804 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1805 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1808 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1809 if (!parts
&& (last_parts
[0] != '\0'))
1810 return mtd_devices_init();
1812 /* do not process current partition if mtdparts variable is null */
1816 /* is current partition set in environment? if so, use it */
1817 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1818 struct part_info
*p
;
1819 struct mtd_device
*cdev
;
1822 debug("--- getting current partition: %s\n", tmp_ep
);
1824 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1825 current_mtd_dev
= cdev
;
1826 current_mtd_partnum
= pnum
;
1829 } else if (getenv("partition") == NULL
) {
1830 debug("no partition variable set, setting...\n");
1838 * Return pointer to the partition of a requested number from a requested
1841 * @param dev device that is to be searched for a partition
1842 * @param part_num requested partition number
1843 * @return pointer to the part_info, NULL otherwise
1845 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1847 struct list_head
*entry
;
1848 struct part_info
*part
;
1854 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1855 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1856 dev
->id
->num
, dev
->id
->mtd_id
);
1858 if (part_num
>= dev
->num_parts
) {
1859 printf("invalid partition number %d for device %s%d (%s)\n",
1860 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1861 dev
->id
->num
, dev
->id
->mtd_id
);
1865 /* locate partition number, return it */
1867 list_for_each(entry
, &dev
->parts
) {
1868 part
= list_entry(entry
, struct part_info
, link
);
1870 if (part_num
== num
++) {
1878 /***************************************************/
1879 /* U-boot commands */
1880 /***************************************************/
1881 /* command line only */
1883 * Routine implementing u-boot chpart command. Sets new current partition based
1884 * on the user supplied partition id. For partition id format see find_dev_and_part().
1886 * @param cmdtp command internal data
1887 * @param flag command flag
1888 * @param argc number of arguments supplied to the command
1889 * @param argv arguments list
1890 * @return 0 on success, 1 otherwise
1892 static int do_chpart(cmd_tbl_t
*cmdtp
, int flag
, int argc
, char * const argv
[])
1894 /* command line only */
1895 struct mtd_device
*dev
;
1896 struct part_info
*part
;
1899 if (mtdparts_init() !=0)
1903 printf("no partition id specified\n");
1907 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1910 current_mtd_dev
= dev
;
1911 current_mtd_partnum
= pnum
;
1914 printf("partition changed to %s%d,%d\n",
1915 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1921 * Routine implementing u-boot mtdparts command. Initialize/update default global
1922 * partition list and process user partition request (list, add, del).
1924 * @param cmdtp command internal data
1925 * @param flag command flag
1926 * @param argc number of arguments supplied to the command
1927 * @param argv arguments list
1928 * @return 0 on success, 1 otherwise
1930 static int do_mtdparts(cmd_tbl_t
*cmdtp
, int flag
, int argc
,
1931 char * const argv
[])
1934 if (strcmp(argv
[1], "default") == 0) {
1935 setenv("mtdids", (char *)mtdids_default
);
1936 setenv("mtdparts", (char *)mtdparts_default
);
1937 setenv("partition", NULL
);
1941 } else if (strcmp(argv
[1], "delall") == 0) {
1942 /* this may be the first run, initialize lists if needed */
1945 setenv("mtdparts", NULL
);
1947 /* mtd_devices_init() calls current_save() */
1948 return mtd_devices_init();
1952 /* make sure we are in sync with env variables */
1953 if (mtdparts_init() != 0)
1961 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1962 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1963 #define PART_ADD_DESC_MAXLEN 64
1964 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1965 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1966 struct mtd_info
*mtd
;
1967 uint64_t next_offset
;
1970 struct mtd_device
*dev
;
1971 struct mtd_device
*dev_tmp
;
1973 struct part_info
*p
;
1975 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
1978 if ((id
= id_find(type
, num
)) == NULL
) {
1979 printf("no such device %s defined in mtdids variable\n", argv
[2]);
1983 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
1984 len
+= strlen(argv
[3]); /* size@offset */
1985 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
1986 if (argv
[5] && (strlen(argv
[5]) == 2))
1987 len
+= 2; /* 'ro' */
1989 if (len
>= PART_ADD_DESC_MAXLEN
) {
1990 printf("too long partition description\n");
1993 sprintf(tmpbuf
, "%s:%s(%s)%s",
1994 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
1995 debug("add tmpbuf: %s\n", tmpbuf
);
1997 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
2000 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
2001 dev
->id
->num
, dev
->id
->mtd_id
);
2003 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2005 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2006 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2009 if (!strcmp(&argv
[1][3], ".spread")) {
2010 spread_partition(mtd
, p
, &next_offset
);
2011 debug("increased %s to %d bytes\n", p
->name
, p
->size
);
2015 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2016 if (dev_tmp
== NULL
) {
2018 } else if (part_add(dev_tmp
, p
) != 0) {
2019 /* merge new partition with existing ones*/
2024 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2025 printf("generated mtdparts too long, resetting to null\n");
2032 /* mtdparts del part-id */
2033 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2034 debug("del: part-id = %s\n", argv
[2]);
2036 return delete_partition(argv
[2]);
2039 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2040 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2041 return spread_partitions();
2042 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2044 return CMD_RET_USAGE
;
2047 /***************************************************/
2049 chpart
, 2, 0, do_chpart
,
2050 "change active partition",
2052 " - change active partition (e.g. part-id = nand0,1)"
2055 #ifdef CONFIG_SYS_LONGHELP
2056 static char mtdparts_help_text
[] =
2058 " - list partition table\n"
2060 " - delete all partitions\n"
2061 "mtdparts del part-id\n"
2062 " - delete partition (e.g. part-id = nand0,1)\n"
2063 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2064 " - add partition\n"
2065 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2066 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2067 " - add partition, padding size by skipping bad blocks\n"
2069 "mtdparts default\n"
2070 " - reset partition table to defaults\n"
2071 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2073 " - adjust the sizes of the partitions so they are\n"
2074 " at least as big as the mtdparts variable specifies\n"
2075 " and they each start on a good block\n\n"
2078 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2080 "this command uses three environment variables:\n\n"
2081 "'partition' - keeps current partition identifier\n\n"
2082 "partition := <part-id>\n"
2083 "<part-id> := <dev-id>,part_num\n\n"
2084 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2085 "mtdids=<idmap>[,<idmap>,...]\n\n"
2086 "<idmap> := <dev-id>=<mtd-id>\n"
2087 "<dev-id> := 'nand'|'nor'|'onenand'<dev-num>\n"
2088 "<dev-num> := mtd device number, 0...\n"
2089 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2090 "'mtdparts' - partition list\n\n"
2091 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2092 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2093 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2094 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2095 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2096 "<offset> := partition start offset within the device\n"
2097 "<name> := '(' NAME ')'\n"
2098 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2102 mtdparts
, 6, 0, do_mtdparts
,
2103 "define flash/nand partitions", mtdparts_help_text
2105 /***************************************************/