]>
git.ipfire.org Git - thirdparty/u-boot.git/blob - cmd/mtdparts.c
1 // SPDX-License-Identifier: GPL-2.0+
4 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
7 * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
10 * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
13 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
15 * Added support for reading flash partition table from environment.
16 * Parsing routines are based on driver/mtd/cmdline.c from the linux 2.4
20 * Harald Welte, OpenMoko, Inc., Harald Welte <laforge@openmoko.org>
22 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
23 * Copyright 2002 SYSGO Real-Time Solutions GmbH
27 * Three environment variables are used by the parsing routines:
29 * 'partition' - keeps current partition identifier
31 * partition := <part-id>
32 * <part-id> := <dev-id>,part_num
35 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
37 * mtdids=<idmap>[,<idmap>,...]
39 * <idmap> := <dev-id>=<mtd-id>
40 * <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>
41 * <dev-num> := mtd device number, 0...
42 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
45 * 'mtdparts' - partition list
47 * mtdparts=[mtdparts=]<mtd-def>[;<mtd-def>...]
49 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
50 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
51 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
52 * <size> := standard linux memsize OR '-' to denote all remaining space
53 * <offset> := partition start offset within the device
54 * <name> := '(' NAME ')'
55 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
58 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
59 * - if the above variables are not set defaults for a given target are used
63 * 1 NOR Flash, with 1 single writable partition:
64 * mtdids=nor0=edb7312-nor
65 * mtdparts=[mtdparts=]edb7312-nor:-
67 * 1 NOR Flash with 2 partitions, 1 NAND with one
68 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
69 * mtdparts=[mtdparts=]edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
78 #include <asm/global_data.h>
79 #include <jffs2/load_kernel.h>
80 #include <linux/list.h>
81 #include <linux/ctype.h>
82 #include <linux/err.h>
83 #include <linux/mtd/mtd.h>
85 #if defined(CONFIG_CMD_NAND)
86 #include <linux/mtd/rawnand.h>
90 #if defined(CONFIG_CMD_ONENAND)
91 #include <linux/mtd/onenand.h>
92 #include <onenand_uboot.h>
95 DECLARE_GLOBAL_DATA_PTR
;
97 /* special size referring to all the remaining space in a partition */
98 #define SIZE_REMAINING (~0llu)
100 /* special offset value, it is used when not provided by user
102 * this value is used temporarily during parsing, later such offests
103 * are recalculated */
104 #define OFFSET_NOT_SPECIFIED (~0llu)
106 /* minimum partition size */
107 #define MIN_PART_SIZE 4096
109 /* this flag needs to be set in part_info struct mask_flags
110 * field for read-only partitions */
111 #define MTD_WRITEABLE_CMD 1
113 /* default values for mtdids and mtdparts variables */
114 #if !defined(MTDIDS_DEFAULT)
115 #ifdef CONFIG_MTDIDS_DEFAULT
116 #define MTDIDS_DEFAULT CONFIG_MTDIDS_DEFAULT
118 #define MTDIDS_DEFAULT NULL
121 #if !defined(MTDPARTS_DEFAULT)
122 #ifdef CONFIG_MTDPARTS_DEFAULT
123 #define MTDPARTS_DEFAULT CONFIG_MTDPARTS_DEFAULT
125 #define MTDPARTS_DEFAULT NULL
128 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
129 extern void board_mtdparts_default(const char **mtdids
, const char **mtdparts
);
131 static const char *mtdids_default
= MTDIDS_DEFAULT
;
132 static const char *mtdparts_default
= MTDPARTS_DEFAULT
;
134 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
135 #define MTDIDS_MAXLEN 128
136 #define MTDPARTS_MAXLEN 512
137 #define PARTITION_MAXLEN 16
138 static char last_ids
[MTDIDS_MAXLEN
+ 1];
139 static char last_parts
[MTDPARTS_MAXLEN
+ 1];
140 static char last_partition
[PARTITION_MAXLEN
+ 1];
142 /* low level jffs2 cache cleaning routine */
143 extern void jffs2_free_cache(struct part_info
*part
);
145 /* mtdids mapping list, filled by parse_ids() */
146 static struct list_head mtdids
;
148 /* device/partition list, parse_cmdline() parses into here */
149 static struct list_head devices
;
151 /* current active device and partition number */
152 struct mtd_device
*current_mtd_dev
= NULL
;
153 u8 current_mtd_partnum
= 0;
157 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
);
159 /* command line only routines */
160 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
);
161 static int device_del(struct mtd_device
*dev
);
164 * Parses a string into a number. The number stored at ptr is
165 * potentially suffixed with K (for kilobytes, or 1024 bytes),
166 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
167 * 1073741824). If the number is suffixed with K, M, or G, then
168 * the return value is the number multiplied by one kilobyte, one
169 * megabyte, or one gigabyte, respectively.
171 * @param ptr where parse begins
172 * @param retptr output pointer to next char after parse completes (output)
173 * @return resulting unsigned int
175 static u64
memsize_parse (const char *const ptr
, const char **retptr
)
177 u64 ret
= simple_strtoull(ptr
, (char **)retptr
, 0);
201 * Format string describing supplied size. This routine does the opposite job
202 * to memsize_parse(). Size in bytes is converted to string and if possible
203 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
205 * Note, that this routine does not check for buffer overflow, it's the caller
206 * who must assure enough space.
208 * @param buf output buffer
209 * @param size size to be converted to string
211 static void memsize_format(char *buf
, u64 size
)
213 #define SIZE_GB ((u32)1024*1024*1024)
214 #define SIZE_MB ((u32)1024*1024)
215 #define SIZE_KB ((u32)1024)
217 if ((size
% SIZE_GB
) == 0)
218 sprintf(buf
, "%llug", size
/SIZE_GB
);
219 else if ((size
% SIZE_MB
) == 0)
220 sprintf(buf
, "%llum", size
/SIZE_MB
);
221 else if (size
% SIZE_KB
== 0)
222 sprintf(buf
, "%lluk", size
/SIZE_KB
);
224 sprintf(buf
, "%llu", size
);
228 * This routine does global indexing of all partitions. Resulting index for
229 * current partition is saved in 'mtddevnum'. Current partition name in
232 static void index_partitions(void)
235 struct part_info
*part
;
236 struct list_head
*dentry
;
237 struct mtd_device
*dev
;
239 debug("--- index partitions ---\n");
241 if (current_mtd_dev
) {
243 list_for_each(dentry
, &devices
) {
244 dev
= list_entry(dentry
, struct mtd_device
, link
);
245 if (dev
== current_mtd_dev
) {
246 mtddevnum
+= current_mtd_partnum
;
247 env_set_ulong("mtddevnum", mtddevnum
);
248 debug("=> mtddevnum %d,\n", mtddevnum
);
251 mtddevnum
+= dev
->num_parts
;
254 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
256 env_set("mtddevname", part
->name
);
258 debug("=> mtddevname %s\n", part
->name
);
260 env_set("mtddevname", NULL
);
262 debug("=> mtddevname NULL\n");
265 env_set("mtddevnum", NULL
);
266 env_set("mtddevname", NULL
);
268 debug("=> mtddevnum NULL\n=> mtddevname NULL\n");
273 * Save current device and partition in environment variable 'partition'.
275 static void current_save(void)
279 debug("--- current_save ---\n");
281 if (current_mtd_dev
) {
282 sprintf(buf
, "%s%d,%d", MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
283 current_mtd_dev
->id
->num
, current_mtd_partnum
);
285 env_set("partition", buf
);
286 strncpy(last_partition
, buf
, 16);
288 debug("=> partition %s\n", buf
);
290 env_set("partition", NULL
);
291 last_partition
[0] = '\0';
293 debug("=> partition NULL\n");
300 * Produce a mtd_info given a type and num.
302 * @param type mtd type
303 * @param num mtd number
304 * @param mtd a pointer to an mtd_info instance (output)
305 * @return 0 if device is valid, 1 otherwise
307 static int get_mtd_info(u8 type
, u8 num
, struct mtd_info
**mtd
)
311 sprintf(mtd_dev
, "%s%d", MTD_DEV_TYPE(type
), num
);
312 *mtd
= get_mtd_device_nm(mtd_dev
);
314 printf("Device %s not found!\n", mtd_dev
);
317 put_mtd_device(*mtd
);
323 * Performs sanity check for supplied flash partition.
324 * Table of existing MTD flash devices is searched and partition device
325 * is located. Alignment with the granularity of nand erasesize is verified.
327 * @param id of the parent device
328 * @param part partition to validate
329 * @return 0 if partition is valid, 1 otherwise
331 static int part_validate_eraseblock(struct mtdids
*id
, struct part_info
*part
)
333 struct mtd_info
*mtd
= NULL
;
338 if (get_mtd_info(id
->type
, id
->num
, &mtd
))
341 part
->sector_size
= mtd
->erasesize
;
343 if (!mtd
->numeraseregions
) {
345 * Only one eraseregion (NAND, SPI-NAND, OneNAND or uniform NOR),
346 * checking for alignment is easy here
348 offset
= part
->offset
;
349 if (do_div(offset
, mtd
->erasesize
)) {
350 printf("%s%d: partition (%s) start offset"
351 "alignment incorrect\n",
352 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
357 if (do_div(size
, mtd
->erasesize
)) {
358 printf("%s%d: partition (%s) size alignment incorrect\n",
359 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
364 * Multiple eraseregions (non-uniform NOR),
365 * checking for alignment is more complex here
368 /* Check start alignment */
369 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
370 start
= mtd
->eraseregions
[i
].offset
;
371 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
372 if (part
->offset
== start
)
374 start
+= mtd
->eraseregions
[i
].erasesize
;
378 printf("%s%d: partition (%s) start offset alignment incorrect\n",
379 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
384 /* Check end/size alignment */
385 for (i
= 0; i
< mtd
->numeraseregions
; i
++) {
386 start
= mtd
->eraseregions
[i
].offset
;
387 for (j
= 0; j
< mtd
->eraseregions
[i
].numblocks
; j
++) {
388 if ((part
->offset
+ part
->size
) == start
)
390 start
+= mtd
->eraseregions
[i
].erasesize
;
393 /* Check last sector alignment */
394 if ((part
->offset
+ part
->size
) == start
)
397 printf("%s%d: partition (%s) size alignment incorrect\n",
398 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
410 * Performs sanity check for supplied partition. Offset and size are
411 * verified to be within valid range. Partition type is checked and
412 * part_validate_eraseblock() is called with the argument of part.
414 * @param id of the parent device
415 * @param part partition to validate
416 * @return 0 if partition is valid, 1 otherwise
418 static int part_validate(struct mtdids
*id
, struct part_info
*part
)
420 if (part
->size
== SIZE_REMAINING
)
421 part
->size
= id
->size
- part
->offset
;
423 if (part
->offset
> id
->size
) {
424 printf("%s: offset %08llx beyond flash size %08llx\n",
425 id
->mtd_id
, part
->offset
, id
->size
);
429 if ((part
->offset
+ part
->size
) <= part
->offset
) {
430 printf("%s%d: partition (%s) size too big\n",
431 MTD_DEV_TYPE(id
->type
), id
->num
, part
->name
);
435 if (part
->offset
+ part
->size
> id
->size
) {
436 printf("%s: partitioning exceeds flash size\n", id
->mtd_id
);
441 * Now we need to check if the partition starts and ends on
442 * sector (eraseblock) regions
444 return part_validate_eraseblock(id
, part
);
448 * Delete selected partition from the partition list of the specified device.
450 * @param dev device to delete partition from
451 * @param part partition to delete
452 * @return 0 on success, 1 otherwise
454 static int part_del(struct mtd_device
*dev
, struct part_info
*part
)
456 u8 current_save_needed
= 0;
458 /* if there is only one partition, remove whole device */
459 if (dev
->num_parts
== 1)
460 return device_del(dev
);
462 /* otherwise just delete this partition */
464 if (dev
== current_mtd_dev
) {
465 /* we are modyfing partitions for the current device,
467 struct part_info
*curr_pi
;
468 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
471 if (curr_pi
== part
) {
472 printf("current partition deleted, resetting current to 0\n");
473 current_mtd_partnum
= 0;
474 } else if (part
->offset
<= curr_pi
->offset
) {
475 current_mtd_partnum
--;
477 current_save_needed
= 1;
481 list_del(&part
->link
);
485 if (current_save_needed
> 0)
494 * Delete all partitions from parts head list, free memory.
496 * @param head list of partitions to delete
498 static void part_delall(struct list_head
*head
)
500 struct list_head
*entry
, *n
;
501 struct part_info
*part_tmp
;
503 /* clean tmp_list and free allocated memory */
504 list_for_each_safe(entry
, n
, head
) {
505 part_tmp
= list_entry(entry
, struct part_info
, link
);
513 * Add new partition to the supplied partition list. Make sure partitions are
514 * sorted by offset in ascending order.
516 * @param head list this partition is to be added to
517 * @param new partition to be added
519 static int part_sort_add(struct mtd_device
*dev
, struct part_info
*part
)
521 struct list_head
*entry
;
522 struct part_info
*new_pi
, *curr_pi
;
524 /* link partition to parrent dev */
527 if (list_empty(&dev
->parts
)) {
528 debug("part_sort_add: list empty\n");
529 list_add(&part
->link
, &dev
->parts
);
535 new_pi
= list_entry(&part
->link
, struct part_info
, link
);
537 /* get current partition info if we are updating current device */
539 if (dev
== current_mtd_dev
)
540 curr_pi
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
542 list_for_each(entry
, &dev
->parts
) {
543 struct part_info
*pi
;
545 pi
= list_entry(entry
, struct part_info
, link
);
547 /* be compliant with kernel cmdline, allow only one partition at offset zero */
548 if ((new_pi
->offset
== pi
->offset
) && (pi
->offset
== 0)) {
549 printf("cannot add second partition at offset 0\n");
553 if (new_pi
->offset
<= pi
->offset
) {
554 list_add_tail(&part
->link
, entry
);
557 if (curr_pi
&& (pi
->offset
<= curr_pi
->offset
)) {
558 /* we are modyfing partitions for the current
559 * device, update current */
560 current_mtd_partnum
++;
569 list_add_tail(&part
->link
, &dev
->parts
);
576 * Add provided partition to the partition list of a given device.
578 * @param dev device to which partition is added
579 * @param part partition to be added
580 * @return 0 on success, 1 otherwise
582 static int part_add(struct mtd_device
*dev
, struct part_info
*part
)
584 /* verify alignment and size */
585 if (part_validate(dev
->id
, part
) != 0)
588 /* partition is ok, add it to the list */
589 if (part_sort_add(dev
, part
) != 0)
596 * Parse one partition definition, allocate memory and return pointer to this
597 * location in retpart.
599 * @param partdef pointer to the partition definition string i.e. <part-def>
600 * @param ret output pointer to next char after parse completes (output)
601 * @param retpart pointer to the allocated partition (output)
602 * @return 0 on success, 1 otherwise
604 static int part_parse(const char *const partdef
, const char **ret
, struct part_info
**retpart
)
606 struct part_info
*part
;
611 unsigned int mask_flags
;
618 /* fetch the partition size */
620 /* assign all remaining space to this partition */
621 debug("'-': remaining size assigned\n");
622 size
= SIZE_REMAINING
;
625 size
= memsize_parse(p
, &p
);
626 if (size
< MIN_PART_SIZE
) {
627 printf("partition size too small (%llx)\n", size
);
632 /* check for offset */
633 offset
= OFFSET_NOT_SPECIFIED
;
636 offset
= memsize_parse(p
, &p
);
639 /* now look for the name */
642 if ((p
= strchr(name
, ')')) == NULL
) {
643 printf("no closing ) found in partition name\n");
646 name_len
= p
- name
+ 1;
647 if ((name_len
- 1) == 0) {
648 printf("empty partition name\n");
653 /* 0x00000000@0x00000000 */
658 /* test for options */
660 if (strncmp(p
, "ro", 2) == 0) {
661 mask_flags
|= MTD_WRITEABLE_CMD
;
665 /* check for next partition definition */
667 if (size
== SIZE_REMAINING
) {
669 printf("no partitions allowed after a fill-up partition\n");
673 } else if ((*p
== ';') || (*p
== '\0')) {
676 printf("unexpected character '%c' at the end of partition\n", *p
);
681 /* allocate memory */
682 part
= (struct part_info
*)malloc(sizeof(struct part_info
) + name_len
);
684 printf("out of memory\n");
687 memset(part
, 0, sizeof(struct part_info
) + name_len
);
689 part
->offset
= offset
;
690 part
->mask_flags
= mask_flags
;
691 part
->name
= (char *)(part
+ 1);
694 /* copy user provided name */
695 strncpy(part
->name
, name
, name_len
- 1);
698 /* auto generated name in form of size@offset */
699 snprintf(part
->name
, name_len
, "0x%08llx@0x%08llx", size
, offset
);
703 part
->name
[name_len
- 1] = '\0';
704 INIT_LIST_HEAD(&part
->link
);
706 debug("+ partition: name %-22s size 0x%08llx offset 0x%08llx mask flags %d\n",
707 part
->name
, part
->size
,
708 part
->offset
, part
->mask_flags
);
715 * Check device number to be within valid range for given device type.
717 * @param type mtd type
718 * @param num mtd number
719 * @param size a pointer to the size of the mtd device (output)
720 * @return 0 if device is valid, 1 otherwise
722 static int mtd_device_validate(u8 type
, u8 num
, u64
*size
)
724 struct mtd_info
*mtd
= NULL
;
726 if (get_mtd_info(type
, num
, &mtd
))
735 * Delete all mtd devices from a supplied devices list, free memory allocated for
736 * each device and delete all device partitions.
738 * @return 0 on success, 1 otherwise
740 static int device_delall(struct list_head
*head
)
742 struct list_head
*entry
, *n
;
743 struct mtd_device
*dev_tmp
;
745 /* clean devices list */
746 list_for_each_safe(entry
, n
, head
) {
747 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
749 part_delall(&dev_tmp
->parts
);
752 INIT_LIST_HEAD(&devices
);
758 * If provided device exists it's partitions are deleted, device is removed
759 * from device list and device memory is freed.
761 * @param dev device to be deleted
762 * @return 0 on success, 1 otherwise
764 static int device_del(struct mtd_device
*dev
)
766 part_delall(&dev
->parts
);
767 list_del(&dev
->link
);
770 if (dev
== current_mtd_dev
) {
771 /* we just deleted current device */
772 if (list_empty(&devices
)) {
773 current_mtd_dev
= NULL
;
775 /* reset first partition from first dev from the
776 * devices list as current */
777 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
778 current_mtd_partnum
= 0;
789 * Search global device list and return pointer to the device of type and num
792 * @param type device type
793 * @param num device number
794 * @return NULL if requested device does not exist
796 struct mtd_device
*device_find(u8 type
, u8 num
)
798 struct list_head
*entry
;
799 struct mtd_device
*dev_tmp
;
801 list_for_each(entry
, &devices
) {
802 dev_tmp
= list_entry(entry
, struct mtd_device
, link
);
804 if ((dev_tmp
->id
->type
== type
) && (dev_tmp
->id
->num
== num
))
812 * Add specified device to the global device list.
814 * @param dev device to be added
816 static void device_add(struct mtd_device
*dev
)
818 u8 current_save_needed
= 0;
820 if (list_empty(&devices
)) {
821 current_mtd_dev
= dev
;
822 current_mtd_partnum
= 0;
823 current_save_needed
= 1;
826 list_add_tail(&dev
->link
, &devices
);
828 if (current_save_needed
> 0)
835 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
836 * return pointer to the device structure.
838 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
839 * @param ret output pointer to next char after parse completes (output)
840 * @param retdev pointer to the allocated device (output)
841 * @return 0 on success, 1 otherwise
843 static int device_parse(const char *const mtd_dev
, const char **ret
, struct mtd_device
**retdev
)
845 struct mtd_device
*dev
;
846 struct part_info
*part
;
849 unsigned int mtd_id_len
;
853 struct list_head
*entry
, *n
;
858 debug("===device_parse===\n");
867 mtd_id
= p
= mtd_dev
;
868 if (!(p
= strchr(mtd_id
, ':'))) {
869 printf("no <mtd-id> identifier\n");
872 mtd_id_len
= p
- mtd_id
+ 1;
875 /* verify if we have a valid device specified */
876 if ((id
= id_find_by_mtd_id(mtd_id
, mtd_id_len
- 1)) == NULL
) {
877 printf("invalid mtd device '%.*s'\n", mtd_id_len
- 1, mtd_id
);
881 pend
= strchr(p
, ';');
882 debug("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
883 id
->type
, MTD_DEV_TYPE(id
->type
),
884 id
->num
, id
->mtd_id
);
885 debug("parsing partitions %.*s\n", (int)(pend
? pend
- p
: strlen(p
)), p
);
887 /* parse partitions */
891 if ((dev
= device_find(id
->type
, id
->num
)) != NULL
) {
892 /* if device already exists start at the end of the last partition */
893 part
= list_entry(dev
->parts
.prev
, struct part_info
, link
);
894 offset
= part
->offset
+ part
->size
;
897 while (p
&& (*p
!= '\0') && (*p
!= ';')) {
899 if ((part_parse(p
, &p
, &part
) != 0) || (!part
))
902 /* calculate offset when not specified */
903 if (part
->offset
== OFFSET_NOT_SPECIFIED
)
904 part
->offset
= offset
;
906 offset
= part
->offset
;
908 /* verify alignment and size */
909 if (part_validate(id
, part
) != 0)
912 offset
+= part
->size
;
914 /* partition is ok, add it to the list */
915 list_add_tail(&part
->link
, &tmp_list
);
920 part_delall(&tmp_list
);
924 debug("\ntotal partitions: %d\n", num_parts
);
926 /* check for next device presence */
931 } else if (*p
== '\0') {
935 printf("unexpected character '%c' at the end of device\n", *p
);
942 /* allocate memory for mtd_device structure */
943 if ((dev
= (struct mtd_device
*)malloc(sizeof(struct mtd_device
))) == NULL
) {
944 printf("out of memory\n");
947 memset(dev
, 0, sizeof(struct mtd_device
));
949 dev
->num_parts
= 0; /* part_sort_add increments num_parts */
950 INIT_LIST_HEAD(&dev
->parts
);
951 INIT_LIST_HEAD(&dev
->link
);
953 /* move partitions from tmp_list to dev->parts */
954 list_for_each_safe(entry
, n
, &tmp_list
) {
955 part
= list_entry(entry
, struct part_info
, link
);
957 if (part_sort_add(dev
, part
) != 0) {
970 * Initialize global device list.
972 * @return 0 on success, 1 otherwise
974 static int mtd_devices_init(void)
976 last_parts
[0] = '\0';
977 current_mtd_dev
= NULL
;
980 return device_delall(&devices
);
984 * Search global mtdids list and find id of requested type and number.
986 * @return pointer to the id if it exists, NULL otherwise
988 static struct mtdids
* id_find(u8 type
, u8 num
)
990 struct list_head
*entry
;
993 list_for_each(entry
, &mtdids
) {
994 id
= list_entry(entry
, struct mtdids
, link
);
996 if ((id
->type
== type
) && (id
->num
== num
))
1004 * Search global mtdids list and find id of a requested mtd_id.
1006 * Note: first argument is not null terminated.
1008 * @param mtd_id string containing requested mtd_id
1009 * @param mtd_id_len length of supplied mtd_id
1010 * @return pointer to the id if it exists, NULL otherwise
1012 static struct mtdids
* id_find_by_mtd_id(const char *mtd_id
, unsigned int mtd_id_len
)
1014 struct list_head
*entry
;
1017 debug("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1018 mtd_id_len
, mtd_id
, mtd_id_len
);
1020 list_for_each(entry
, &mtdids
) {
1021 id
= list_entry(entry
, struct mtdids
, link
);
1023 debug("entry: '%s' (len = %zu)\n",
1024 id
->mtd_id
, strlen(id
->mtd_id
));
1026 if (mtd_id_len
!= strlen(id
->mtd_id
))
1028 if (strncmp(id
->mtd_id
, mtd_id
, mtd_id_len
) == 0)
1036 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>,
1037 * return device type and number.
1039 * @param id string describing device id
1040 * @param ret_id output pointer to next char after parse completes (output)
1041 * @param dev_type parsed device type (output)
1042 * @param dev_num parsed device number (output)
1043 * @return 0 on success, 1 otherwise
1045 int mtd_id_parse(const char *id
, const char **ret_id
, u8
*dev_type
,
1051 if (strncmp(p
, "nand", 4) == 0) {
1052 *dev_type
= MTD_DEV_TYPE_NAND
;
1054 } else if (strncmp(p
, "nor", 3) == 0) {
1055 *dev_type
= MTD_DEV_TYPE_NOR
;
1057 } else if (strncmp(p
, "onenand", 7) == 0) {
1058 *dev_type
= MTD_DEV_TYPE_ONENAND
;
1060 } else if (strncmp(p
, "spi-nand", 8) == 0) {
1061 *dev_type
= MTD_DEV_TYPE_SPINAND
;
1064 printf("incorrect device type in %s\n", id
);
1069 printf("incorrect device number in %s\n", id
);
1073 *dev_num
= simple_strtoul(p
, (char **)&p
, 0);
1080 * Process all devices and generate corresponding mtdparts string describing
1081 * all partitions on all devices.
1083 * @param buf output buffer holding generated mtdparts string (output)
1084 * @param buflen buffer size
1085 * @return 0 on success, 1 otherwise
1087 static int generate_mtdparts(char *buf
, u32 buflen
)
1089 struct list_head
*pentry
, *dentry
;
1090 struct mtd_device
*dev
;
1091 struct part_info
*part
, *prev_part
;
1096 u32 maxlen
= buflen
- 1;
1098 debug("--- generate_mtdparts ---\n");
1100 if (list_empty(&devices
)) {
1105 list_for_each(dentry
, &devices
) {
1106 dev
= list_entry(dentry
, struct mtd_device
, link
);
1109 len
= strlen(dev
->id
->mtd_id
) + 1;
1112 memcpy(p
, dev
->id
->mtd_id
, len
- 1);
1117 /* format partitions */
1120 list_for_each(pentry
, &dev
->parts
) {
1121 part
= list_entry(pentry
, struct part_info
, link
);
1123 offset
= part
->offset
;
1126 /* partition size */
1127 memsize_format(tmpbuf
, size
);
1128 len
= strlen(tmpbuf
);
1131 memcpy(p
, tmpbuf
, len
);
1136 /* add offset only when there is a gap between
1138 if ((!prev_part
&& (offset
!= 0)) ||
1139 (prev_part
&& ((prev_part
->offset
+ prev_part
->size
) != part
->offset
))) {
1141 memsize_format(tmpbuf
, offset
);
1142 len
= strlen(tmpbuf
) + 1;
1146 memcpy(p
, tmpbuf
, len
- 1);
1151 /* copy name only if user supplied */
1152 if(!part
->auto_name
) {
1153 len
= strlen(part
->name
) + 2;
1158 memcpy(p
, part
->name
, len
- 2);
1165 if (part
->mask_flags
&& MTD_WRITEABLE_CMD
) {
1174 /* print ',' separator if there are other partitions
1176 if (dev
->num_parts
> part_cnt
) {
1184 /* print ';' separator if there are other devices following */
1185 if (dentry
->next
!= &devices
) {
1193 /* we still have at least one char left, as we decremented maxlen at
1200 last_parts
[0] = '\0';
1205 * Call generate_mtdparts to process all devices and generate corresponding
1206 * mtdparts string, save it in mtdparts environment variable.
1208 * @param buf output buffer holding generated mtdparts string (output)
1209 * @param buflen buffer size
1210 * @return 0 on success, 1 otherwise
1212 static int generate_mtdparts_save(char *buf
, u32 buflen
)
1216 ret
= generate_mtdparts(buf
, buflen
);
1218 if ((buf
[0] != '\0') && (ret
== 0))
1219 env_set("mtdparts", buf
);
1221 env_set("mtdparts", NULL
);
1226 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1228 * Get the net size (w/o bad blocks) of the given partition.
1230 * @param mtd the mtd info
1231 * @param part the partition
1232 * @return the calculated net size of this partition
1234 static uint64_t net_part_size(struct mtd_info
*mtd
, struct part_info
*part
)
1236 uint64_t i
, net_size
= 0;
1238 if (!mtd
->_block_isbad
)
1241 for (i
= 0; i
< part
->size
; i
+= mtd
->erasesize
) {
1242 if (!mtd
->_block_isbad(mtd
, part
->offset
+ i
))
1243 net_size
+= mtd
->erasesize
;
1250 static void print_partition_table(void)
1252 struct list_head
*dentry
, *pentry
;
1253 struct part_info
*part
;
1254 struct mtd_device
*dev
;
1257 list_for_each(dentry
, &devices
) {
1258 dev
= list_entry(dentry
, struct mtd_device
, link
);
1259 /* list partitions for given device */
1261 #if defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES)
1262 struct mtd_info
*mtd
;
1264 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
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\tnet size\toffset\t\tmask_flags\n");
1272 list_for_each(pentry
, &dev
->parts
) {
1276 part
= list_entry(pentry
, struct part_info
, link
);
1277 net_size
= net_part_size(mtd
, part
);
1278 size_note
= part
->size
== net_size
? " " : " (!)";
1279 printf("%2d: %-20s0x%08llx\t0x%08x%s\t0x%08llx\t%d\n",
1280 part_num
, part
->name
, part
->size
,
1281 net_size
, size_note
, part
->offset
,
1283 #else /* !defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1284 printf("\ndevice %s%d <%s>, # parts = %d\n",
1285 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1286 dev
->id
->mtd_id
, dev
->num_parts
);
1287 printf(" #: name\t\tsize\t\toffset\t\tmask_flags\n");
1289 list_for_each(pentry
, &dev
->parts
) {
1290 part
= list_entry(pentry
, struct part_info
, link
);
1291 printf("%2d: %-20s0x%08llx\t0x%08llx\t%d\n",
1292 part_num
, part
->name
, part
->size
,
1293 part
->offset
, part
->mask_flags
);
1294 #endif /* defined(CONFIG_CMD_MTDPARTS_SHOW_NET_SIZES) */
1299 if (list_empty(&devices
))
1300 printf("no partitions defined\n");
1304 * Format and print out a partition list for each device from global device
1307 static void list_partitions(void)
1309 struct part_info
*part
;
1311 debug("\n---list_partitions---\n");
1312 print_partition_table();
1314 /* current_mtd_dev is not NULL only when we have non empty device list */
1315 if (current_mtd_dev
) {
1316 part
= mtd_part_info(current_mtd_dev
, current_mtd_partnum
);
1318 printf("\nactive partition: %s%d,%d - (%s) 0x%08llx @ 0x%08llx\n",
1319 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1320 current_mtd_dev
->id
->num
, current_mtd_partnum
,
1321 part
->name
, part
->size
, part
->offset
);
1323 printf("could not get current partition info\n\n");
1327 printf("\ndefaults:\n");
1328 printf("mtdids : %s\n",
1329 mtdids_default
? mtdids_default
: "none");
1331 * Using printf() here results in printbuffer overflow
1332 * if default mtdparts string is greater than console
1333 * printbuffer. Use puts() to prevent system crashes.
1336 puts(mtdparts_default
? mtdparts_default
: "none");
1341 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1342 * corresponding device and verify partition number.
1344 * @param id string describing device and partition or partition name
1345 * @param dev pointer to the requested device (output)
1346 * @param part_num verified partition number (output)
1347 * @param part pointer to requested partition (output)
1348 * @return 0 on success, 1 otherwise
1350 int find_dev_and_part(const char *id
, struct mtd_device
**dev
,
1351 u8
*part_num
, struct part_info
**part
)
1353 struct list_head
*dentry
, *pentry
;
1354 u8 type
, dnum
, pnum
;
1357 debug("--- find_dev_and_part ---\nid = %s\n", id
);
1359 list_for_each(dentry
, &devices
) {
1361 *dev
= list_entry(dentry
, struct mtd_device
, link
);
1362 list_for_each(pentry
, &(*dev
)->parts
) {
1363 *part
= list_entry(pentry
, struct part_info
, link
);
1364 if (strcmp((*part
)->name
, id
) == 0)
1375 if (mtd_id_parse(p
, &p
, &type
, &dnum
) != 0)
1378 if ((*p
++ != ',') || (*p
== '\0')) {
1379 printf("no partition number specified\n");
1382 pnum
= simple_strtoul(p
, (char **)&p
, 0);
1384 printf("unexpected trailing character '%c'\n", *p
);
1388 if ((*dev
= device_find(type
, dnum
)) == NULL
) {
1389 printf("no such device %s%d\n", MTD_DEV_TYPE(type
), dnum
);
1393 if ((*part
= mtd_part_info(*dev
, pnum
)) == NULL
) {
1394 printf("no such partition\n");
1405 * Find and delete partition. For partition id format see find_dev_and_part().
1407 * @param id string describing device and partition
1408 * @return 0 on success, 1 otherwise
1410 static int delete_partition(const char *id
)
1413 struct mtd_device
*dev
;
1414 struct part_info
*part
;
1416 if (find_dev_and_part(id
, &dev
, &pnum
, &part
) == 0) {
1418 debug("delete_partition: device = %s%d, partition %d = (%s) 0x%08llx@0x%08llx\n",
1419 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
,
1420 part
->name
, part
->size
, part
->offset
);
1422 if (part_del(dev
, part
) != 0)
1425 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1426 printf("generated mtdparts too long, resetting to null\n");
1432 printf("partition %s not found\n", id
);
1436 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1438 * Increase the size of the given partition so that it's net size is at least
1439 * as large as the size member and such that the next partition would start on a
1440 * good block if it were adjacent to this partition.
1442 * @param mtd the mtd device
1443 * @param part the partition
1444 * @param next_offset pointer to the offset of the next partition after this
1445 * partition's size has been modified (output)
1447 static void spread_partition(struct mtd_info
*mtd
, struct part_info
*part
,
1448 uint64_t *next_offset
)
1450 uint64_t net_size
, padding_size
= 0;
1453 mtd_get_len_incl_bad(mtd
, part
->offset
, part
->size
, &net_size
,
1457 * Absorb bad blocks immediately following this
1458 * partition also into the partition, such that
1459 * the next partition starts with a good block.
1462 mtd_get_len_incl_bad(mtd
, part
->offset
+ net_size
,
1463 mtd
->erasesize
, &padding_size
, &truncated
);
1467 padding_size
-= mtd
->erasesize
;
1471 printf("truncated partition %s to %lld bytes\n", part
->name
,
1472 (uint64_t) net_size
+ padding_size
);
1475 part
->size
= net_size
+ padding_size
;
1476 *next_offset
= part
->offset
+ part
->size
;
1480 * Adjust all of the partition sizes, such that all partitions are at least
1481 * as big as their mtdparts environment variable sizes and they each start
1484 * @return 0 on success, 1 otherwise
1486 static int spread_partitions(void)
1488 struct list_head
*dentry
, *pentry
;
1489 struct mtd_device
*dev
;
1490 struct part_info
*part
;
1491 struct mtd_info
*mtd
;
1495 list_for_each(dentry
, &devices
) {
1496 dev
= list_entry(dentry
, struct mtd_device
, link
);
1498 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
1503 list_for_each(pentry
, &dev
->parts
) {
1504 part
= list_entry(pentry
, struct part_info
, link
);
1506 debug("spread_partitions: device = %s%d, partition %d ="
1507 " (%s) 0x%08llx@0x%08llx\n",
1508 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
,
1509 part_num
, part
->name
, part
->size
,
1512 if (cur_offs
> part
->offset
)
1513 part
->offset
= cur_offs
;
1515 spread_partition(mtd
, part
, &cur_offs
);
1523 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
1524 printf("generated mtdparts too long, resetting to null\n");
1529 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
1532 * The mtdparts variable tends to be long. If we need to access it
1533 * before the env is relocated, then we need to use our own stack
1534 * buffer. gd->env_buf will be too small.
1536 * @param buf temporary buffer pointer MTDPARTS_MAXLEN long
1537 * @return mtdparts variable string, NULL if not found
1539 static const char *env_get_mtdparts(char *buf
)
1541 if (gd
->flags
& GD_FLG_ENV_READY
)
1542 return env_get("mtdparts");
1543 if (env_get_f("mtdparts", buf
, MTDPARTS_MAXLEN
) != -1)
1549 * Accept character string describing mtd partitions and call device_parse()
1550 * for each entry. Add created devices to the global devices list.
1552 * @param mtdparts string specifing mtd partitions
1553 * @return 0 on success, 1 otherwise
1555 static int parse_mtdparts(const char *const mtdparts
)
1558 struct mtd_device
*dev
;
1560 char tmp_parts
[MTDPARTS_MAXLEN
];
1562 debug("\n---parse_mtdparts---\nmtdparts = %s\n\n", mtdparts
);
1564 /* delete all devices and partitions */
1565 if (mtd_devices_init() != 0) {
1566 printf("could not initialise device list\n");
1570 /* re-read 'mtdparts' variable, mtd_devices_init may be updating env */
1571 p
= env_get_mtdparts(tmp_parts
);
1575 /* Skip the useless prefix, if any */
1576 if (strncmp(p
, "mtdparts=", 9) == 0)
1579 while (*p
!= '\0') {
1581 if ((device_parse(p
, &p
, &dev
) != 0) || (!dev
))
1584 debug("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
1585 dev
->id
->num
, dev
->id
->mtd_id
);
1587 /* check if parsed device is already on the list */
1588 if (device_find(dev
->id
->type
, dev
->id
->num
) != NULL
) {
1589 printf("device %s%d redefined, please correct mtdparts variable\n",
1590 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
);
1594 list_add_tail(&dev
->link
, &devices
);
1599 device_delall(&devices
);
1606 * Parse provided string describing mtdids mapping (see file header for mtdids
1607 * variable format). Allocate memory for each entry and add all found entries
1608 * to the global mtdids list.
1610 * @param ids mapping string
1611 * @return 0 on success, 1 otherwise
1613 static int parse_mtdids(const char *const ids
)
1615 const char *p
= ids
;
1619 struct list_head
*entry
, *n
;
1620 struct mtdids
*id_tmp
;
1625 debug("\n---parse_mtdids---\nmtdids = %s\n\n", ids
);
1627 /* clean global mtdids list */
1628 list_for_each_safe(entry
, n
, &mtdids
) {
1629 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1630 debug("mtdids del: %d %d\n", id_tmp
->type
, id_tmp
->num
);
1635 INIT_LIST_HEAD(&mtdids
);
1637 while(p
&& (*p
!= '\0')) {
1640 /* parse 'nor'|'nand'|'onenand'|'spi-nand'<dev-num> */
1641 if (mtd_id_parse(p
, &p
, &type
, &num
) != 0)
1645 printf("mtdids: incorrect <dev-num>\n");
1650 /* check if requested device exists */
1651 if (mtd_device_validate(type
, num
, &size
) != 0)
1654 /* locate <mtd-id> */
1656 if ((p
= strchr(mtd_id
, ',')) != NULL
) {
1657 mtd_id_len
= p
- mtd_id
+ 1;
1660 mtd_id_len
= strlen(mtd_id
) + 1;
1662 if (mtd_id_len
== 0) {
1663 printf("mtdids: no <mtd-id> identifier\n");
1667 /* check if this id is already on the list */
1668 int double_entry
= 0;
1669 list_for_each(entry
, &mtdids
) {
1670 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1671 if ((id_tmp
->type
== type
) && (id_tmp
->num
== num
)) {
1677 printf("device id %s%d redefined, please correct mtdids variable\n",
1678 MTD_DEV_TYPE(type
), num
);
1682 /* allocate mtdids structure */
1683 if (!(id
= (struct mtdids
*)malloc(sizeof(struct mtdids
) + mtd_id_len
))) {
1684 printf("out of memory\n");
1687 memset(id
, 0, sizeof(struct mtdids
) + mtd_id_len
);
1691 id
->mtd_id
= (char *)(id
+ 1);
1692 strncpy(id
->mtd_id
, mtd_id
, mtd_id_len
- 1);
1693 id
->mtd_id
[mtd_id_len
- 1] = '\0';
1694 INIT_LIST_HEAD(&id
->link
);
1696 debug("+ id %s%d\t%16lld bytes\t%s\n",
1697 MTD_DEV_TYPE(id
->type
), id
->num
,
1698 id
->size
, id
->mtd_id
);
1700 list_add_tail(&id
->link
, &mtdids
);
1704 /* clean mtdids list and free allocated memory */
1705 list_for_each_safe(entry
, n
, &mtdids
) {
1706 id_tmp
= list_entry(entry
, struct mtdids
, link
);
1718 * Parse and initialize global mtdids mapping and create global
1719 * device/partition list.
1721 * @return 0 on success, 1 otherwise
1723 int mtdparts_init(void)
1725 static int initialized
= 0;
1726 const char *ids
, *parts
;
1727 const char *current_partition
;
1729 char tmp_ep
[PARTITION_MAXLEN
+ 1];
1730 char tmp_parts
[MTDPARTS_MAXLEN
];
1732 debug("\n---mtdparts_init---\n");
1734 INIT_LIST_HEAD(&mtdids
);
1735 INIT_LIST_HEAD(&devices
);
1736 memset(last_ids
, 0, sizeof(last_ids
));
1737 memset(last_parts
, 0, sizeof(last_parts
));
1738 memset(last_partition
, 0, sizeof(last_partition
));
1739 #if defined(CONFIG_SYS_MTDPARTS_RUNTIME)
1740 board_mtdparts_default(&mtdids_default
, &mtdparts_default
);
1747 ids
= env_get("mtdids");
1748 parts
= env_get_mtdparts(tmp_parts
);
1749 current_partition
= env_get("partition");
1751 /* save it for later parsing, cannot rely on current partition pointer
1752 * as 'partition' variable may be updated during init */
1753 memset(tmp_parts
, 0, sizeof(tmp_parts
));
1754 memset(tmp_ep
, 0, sizeof(tmp_ep
));
1755 if (current_partition
)
1756 strncpy(tmp_ep
, current_partition
, PARTITION_MAXLEN
);
1758 debug("last_ids : %s\n", last_ids
);
1759 debug("env_ids : %s\n", ids
);
1760 debug("last_parts: %s\n", last_parts
);
1761 debug("env_parts : %s\n\n", parts
);
1763 debug("last_partition : %s\n", last_partition
);
1764 debug("env_partition : %s\n", current_partition
);
1766 /* if mtdids variable is empty try to use defaults */
1768 if (mtdids_default
) {
1769 debug("mtdids variable not defined, using default\n");
1770 ids
= mtdids_default
;
1771 env_set("mtdids", (char *)ids
);
1773 printf("mtdids not defined, no default present\n");
1777 if (strlen(ids
) > MTDIDS_MAXLEN
- 1) {
1778 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN
);
1782 /* use defaults when mtdparts variable is not defined
1783 * once mtdparts is saved environment, drop use_defaults flag */
1785 if (mtdparts_default
&& use_defaults
) {
1786 parts
= mtdparts_default
;
1787 if (env_set("mtdparts", (char *)parts
) == 0)
1790 printf("mtdparts variable not set, see 'help mtdparts'\n");
1793 if (parts
&& (strlen(parts
) > MTDPARTS_MAXLEN
- 1)) {
1794 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN
);
1798 /* check if we have already parsed those mtdids */
1799 if ((last_ids
[0] != '\0') && (strcmp(last_ids
, ids
) == 0)) {
1804 if (parse_mtdids(ids
) != 0) {
1809 /* ok it's good, save new ids */
1810 strncpy(last_ids
, ids
, MTDIDS_MAXLEN
);
1813 /* parse partitions if either mtdparts or mtdids were updated */
1814 if (parts
&& ((last_parts
[0] == '\0') || ((strcmp(last_parts
, parts
) != 0)) || ids_changed
)) {
1815 if (parse_mtdparts(parts
) != 0)
1818 if (list_empty(&devices
)) {
1819 printf("mtdparts_init: no valid partitions\n");
1823 /* ok it's good, save new parts */
1824 strncpy(last_parts
, parts
, MTDPARTS_MAXLEN
);
1826 /* reset first partition from first dev from the list as current */
1827 current_mtd_dev
= list_entry(devices
.next
, struct mtd_device
, link
);
1828 current_mtd_partnum
= 0;
1831 debug("mtdparts_init: current_mtd_dev = %s%d, current_mtd_partnum = %d\n",
1832 MTD_DEV_TYPE(current_mtd_dev
->id
->type
),
1833 current_mtd_dev
->id
->num
, current_mtd_partnum
);
1836 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1837 if (!parts
&& (last_parts
[0] != '\0'))
1838 return mtd_devices_init();
1840 /* do not process current partition if mtdparts variable is null */
1844 /* is current partition set in environment? if so, use it */
1845 if ((tmp_ep
[0] != '\0') && (strcmp(tmp_ep
, last_partition
) != 0)) {
1846 struct part_info
*p
;
1847 struct mtd_device
*cdev
;
1850 debug("--- getting current partition: %s\n", tmp_ep
);
1852 if (find_dev_and_part(tmp_ep
, &cdev
, &pnum
, &p
) == 0) {
1853 current_mtd_dev
= cdev
;
1854 current_mtd_partnum
= pnum
;
1857 } else if (env_get("partition") == NULL
) {
1858 debug("no partition variable set, setting...\n");
1866 * Return pointer to the partition of a requested number from a requested
1869 * @param dev device that is to be searched for a partition
1870 * @param part_num requested partition number
1871 * @return pointer to the part_info, NULL otherwise
1873 static struct part_info
* mtd_part_info(struct mtd_device
*dev
, unsigned int part_num
)
1875 struct list_head
*entry
;
1876 struct part_info
*part
;
1882 debug("\n--- mtd_part_info: partition number %d for device %s%d (%s)\n",
1883 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1884 dev
->id
->num
, dev
->id
->mtd_id
);
1886 if (part_num
>= dev
->num_parts
) {
1887 printf("invalid partition number %d for device %s%d (%s)\n",
1888 part_num
, MTD_DEV_TYPE(dev
->id
->type
),
1889 dev
->id
->num
, dev
->id
->mtd_id
);
1893 /* locate partition number, return it */
1895 list_for_each(entry
, &dev
->parts
) {
1896 part
= list_entry(entry
, struct part_info
, link
);
1898 if (part_num
== num
++) {
1906 /***************************************************/
1907 /* U-Boot commands */
1908 /***************************************************/
1909 /* command line only */
1911 * Routine implementing u-boot chpart command. Sets new current partition based
1912 * on the user supplied partition id. For partition id format see find_dev_and_part().
1914 * @param cmdtp command internal data
1915 * @param flag command flag
1916 * @param argc number of arguments supplied to the command
1917 * @param argv arguments list
1918 * @return 0 on success, 1 otherwise
1920 static int do_chpart(struct cmd_tbl
*cmdtp
, int flag
, int argc
,
1923 /* command line only */
1924 struct mtd_device
*dev
;
1925 struct part_info
*part
;
1928 if (mtdparts_init() !=0)
1932 printf("no partition id specified\n");
1936 if (find_dev_and_part(argv
[1], &dev
, &pnum
, &part
) != 0)
1939 current_mtd_dev
= dev
;
1940 current_mtd_partnum
= pnum
;
1943 printf("partition changed to %s%d,%d\n",
1944 MTD_DEV_TYPE(dev
->id
->type
), dev
->id
->num
, pnum
);
1950 * Routine implementing u-boot mtdparts command. Initialize/update default global
1951 * partition list and process user partition request (list, add, del).
1953 * @param cmdtp command internal data
1954 * @param flag command flag
1955 * @param argc number of arguments supplied to the command
1956 * @param argv arguments list
1957 * @return 0 on success, 1 otherwise
1959 static int do_mtdparts(struct cmd_tbl
*cmdtp
, int flag
, int argc
,
1963 if (strcmp(argv
[1], "default") == 0) {
1964 env_set("mtdids", NULL
);
1965 env_set("mtdparts", NULL
);
1966 env_set("partition", NULL
);
1971 } else if (strcmp(argv
[1], "delall") == 0) {
1972 /* this may be the first run, initialize lists if needed */
1975 env_set("mtdparts", NULL
);
1977 /* mtd_devices_init() calls current_save() */
1978 return mtd_devices_init();
1982 /* make sure we are in sync with env variables */
1983 if (mtdparts_init() != 0)
1991 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
1992 if (((argc
== 5) || (argc
== 6)) && (strncmp(argv
[1], "add", 3) == 0)) {
1993 #define PART_ADD_DESC_MAXLEN 64
1994 char tmpbuf
[PART_ADD_DESC_MAXLEN
];
1995 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
1996 struct mtd_info
*mtd
;
1997 uint64_t next_offset
;
2000 struct mtd_device
*dev
;
2001 struct mtd_device
*dev_tmp
;
2003 struct part_info
*p
;
2005 if (mtd_id_parse(argv
[2], NULL
, &type
, &num
) != 0)
2008 if ((id
= id_find(type
, num
)) == NULL
) {
2009 printf("no such device %s defined in mtdids variable\n", argv
[2]);
2013 len
= strlen(id
->mtd_id
) + 1; /* 'mtd_id:' */
2014 len
+= strlen(argv
[3]); /* size@offset */
2015 len
+= strlen(argv
[4]) + 2; /* '(' name ')' */
2016 if (argv
[5] && (strlen(argv
[5]) == 2))
2017 len
+= 2; /* 'ro' */
2019 if (len
>= PART_ADD_DESC_MAXLEN
) {
2020 printf("too long partition description\n");
2023 sprintf(tmpbuf
, "%s:%s(%s)%s",
2024 id
->mtd_id
, argv
[3], argv
[4], argv
[5] ? argv
[5] : "");
2025 debug("add tmpbuf: %s\n", tmpbuf
);
2027 if ((device_parse(tmpbuf
, NULL
, &dev
) != 0) || (!dev
))
2030 debug("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev
->id
->type
),
2031 dev
->id
->num
, dev
->id
->mtd_id
);
2033 p
= list_entry(dev
->parts
.next
, struct part_info
, link
);
2035 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2036 if (get_mtd_info(dev
->id
->type
, dev
->id
->num
, &mtd
))
2039 if (!strcmp(&argv
[1][3], ".spread")) {
2040 spread_partition(mtd
, p
, &next_offset
);
2041 debug("increased %s to %llu bytes\n", p
->name
, p
->size
);
2045 dev_tmp
= device_find(dev
->id
->type
, dev
->id
->num
);
2046 if (dev_tmp
== NULL
) {
2048 } else if (part_add(dev_tmp
, p
) != 0) {
2049 /* merge new partition with existing ones*/
2054 if (generate_mtdparts_save(last_parts
, MTDPARTS_MAXLEN
) != 0) {
2055 printf("generated mtdparts too long, resetting to null\n");
2062 /* mtdparts del part-id */
2063 if ((argc
== 3) && (strcmp(argv
[1], "del") == 0)) {
2064 debug("del: part-id = %s\n", argv
[2]);
2066 return delete_partition(argv
[2]);
2069 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2070 if ((argc
== 2) && (strcmp(argv
[1], "spread") == 0))
2071 return spread_partitions();
2072 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2074 return CMD_RET_USAGE
;
2077 /***************************************************/
2079 chpart
, 2, 0, do_chpart
,
2080 "change active partition of a MTD device",
2082 " - change active partition (e.g. part-id = nand0,1) of a MTD device"
2085 #ifdef CONFIG_SYS_LONGHELP
2086 static char mtdparts_help_text
[] =
2088 " - list partition table\n"
2090 " - delete all partitions\n"
2091 "mtdparts del part-id\n"
2092 " - delete partition (e.g. part-id = nand0,1)\n"
2093 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2094 " - add partition\n"
2095 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2096 "mtdparts add.spread <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2097 " - add partition, padding size by skipping bad blocks\n"
2099 "mtdparts default\n"
2100 " - reset partition table to defaults\n"
2101 #if defined(CONFIG_CMD_MTDPARTS_SPREAD)
2103 " - adjust the sizes of the partitions so they are\n"
2104 " at least as big as the mtdparts variable specifies\n"
2105 " and they each start on a good block\n\n"
2108 #endif /* CONFIG_CMD_MTDPARTS_SPREAD */
2110 "this command uses three environment variables:\n\n"
2111 "'partition' - keeps current partition identifier\n\n"
2112 "partition := <part-id>\n"
2113 "<part-id> := <dev-id>,part_num\n\n"
2114 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2115 "mtdids=<idmap>[,<idmap>,...]\n\n"
2116 "<idmap> := <dev-id>=<mtd-id>\n"
2117 "<dev-id> := 'nand'|'nor'|'onenand'|'spi-nand'<dev-num>\n"
2118 "<dev-num> := mtd device number, 0...\n"
2119 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2120 "'mtdparts' - partition list\n\n"
2121 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2122 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2123 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2124 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2125 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2126 "<offset> := partition start offset within the device\n"
2127 "<name> := '(' NAME ')'\n"
2128 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)";
2132 mtdparts
, 6, 0, do_mtdparts
,
2133 "define flash/nand partitions", mtdparts_help_text
2135 /***************************************************/