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
18 * $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
19 * Copyright 2002 SYSGO Real-Time Solutions GmbH
21 * See file CREDITS for list of people who contributed to this
24 * This program is free software; you can redistribute it and/or
25 * modify it under the terms of the GNU General Public License as
26 * published by the Free Software Foundation; either version 2 of
27 * the License, or (at your option) any later version.
29 * This program is distributed in the hope that it will be useful,
30 * but WITHOUT ANY WARRANTY; without even the implied warranty of
31 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
32 * GNU General Public License for more details.
34 * You should have received a copy of the GNU General Public License
35 * along with this program; if not, write to the Free Software
36 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
41 * Three environment variables are used by the parsing routines:
43 * 'partition' - keeps current partition identifier
45 * partition := <part-id>
46 * <part-id> := <dev-id>,part_num
49 * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
51 * mtdids=<idmap>[,<idmap>,...]
53 * <idmap> := <dev-id>=<mtd-id>
54 * <dev-id> := 'nand'|'nor'<dev-num>
55 * <dev-num> := mtd device number, 0...
56 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
59 * 'mtdparts' - partition list
61 * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
63 * <mtd-def> := <mtd-id>:<part-def>[,<part-def>...]
64 * <mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)
65 * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
66 * <size> := standard linux memsize OR '-' to denote all remaining space
67 * <offset> := partition start offset within the device
68 * <name> := '(' NAME ')'
69 * <ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)
72 * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
73 * - if the above variables are not set defaults for a given target are used
77 * 1 NOR Flash, with 1 single writable partition:
78 * mtdids=nor0=edb7312-nor
79 * mtdparts=mtdparts=edb7312-nor:-
81 * 1 NOR Flash with 2 partitions, 1 NAND with one
82 * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
83 * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
88 * JFFS2/CRAMFS support
93 #include <jffs2/jffs2.h>
94 #include <linux/mtd/nand.h>
95 #include <linux/list.h>
96 #include <linux/ctype.h>
98 #if (CONFIG_COMMANDS & CFG_CMD_JFFS2)
100 #include <cramfs/cramfs_fs.h>
102 /* enable/disable debugging messages */
107 # define DEBUGF(fmt, args...) printf(fmt ,##args)
109 # define DEBUGF(fmt, args...)
112 /* special size referring to all the remaining space in a partition */
113 #define SIZE_REMAINING 0xFFFFFFFF
115 /* special offset value, it is used when not provided by user
117 * this value is used temporarily during parsing, later such offests
118 * are recalculated */
119 #define OFFSET_NOT_SPECIFIED 0xFFFFFFFF
121 /* minimum partition size */
122 #define MIN_PART_SIZE 4096
124 /* this flag needs to be set in part_info struct mask_flags
125 * field for read-only partitions */
126 #define MTD_WRITEABLE 1
128 #ifdef CONFIG_JFFS2_CMDLINE
129 /* default values for mtdids and mtdparts variables */
130 #if defined(MTDIDS_DEFAULT)
131 static const char *const mtdids_default = MTDIDS_DEFAULT;
133 #warning "MTDIDS_DEFAULT not defined!"
134 static const char *const mtdids_default = NULL;
137 #if defined(MTDPARTS_DEFAULT)
138 static const char *const mtdparts_default = MTDPARTS_DEFAULT;
140 #warning "MTDPARTS_DEFAULT not defined!"
141 static const char *const mtdparts_default = NULL;
144 /* copies of last seen 'mtdids', 'mtdparts' and 'partition' env variables */
145 #define MTDIDS_MAXLEN 128
146 #define MTDPARTS_MAXLEN 512
147 #define PARTITION_MAXLEN 16
148 static char last_ids[MTDIDS_MAXLEN];
149 static char last_parts[MTDPARTS_MAXLEN];
150 static char last_partition[PARTITION_MAXLEN];
152 /* low level jffs2 cache cleaning routine */
153 extern void jffs2_free_cache(struct part_info *part);
155 /* mtdids mapping list, filled by parse_ids() */
156 struct list_head mtdids;
158 /* device/partition list, parse_cmdline() parses into here */
159 struct list_head devices;
160 #endif /* #ifdef CONFIG_JFFS2_CMDLINE */
162 /* current active device and partition number */
163 static struct mtd_device *current_dev = NULL;
164 static u8 current_partnum = 0;
166 extern int cramfs_check (struct part_info *info);
167 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
168 extern int cramfs_ls (struct part_info *info, char *filename);
169 extern int cramfs_info (struct part_info *info);
171 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num);
173 /* command line only routines */
174 #ifdef CONFIG_JFFS2_CMDLINE
176 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len);
177 static int device_del(struct mtd_device *dev);
180 * Parses a string into a number. The number stored at ptr is
181 * potentially suffixed with K (for kilobytes, or 1024 bytes),
182 * M (for megabytes, or 1048576 bytes), or G (for gigabytes, or
183 * 1073741824). If the number is suffixed with K, M, or G, then
184 * the return value is the number multiplied by one kilobyte, one
185 * megabyte, or one gigabyte, respectively.
187 * @param ptr where parse begins
188 * @param retptr output pointer to next char after parse completes (output)
189 * @return resulting unsigned int
191 static unsigned long memsize_parse (const char *const ptr, const char **retptr)
193 unsigned long ret = simple_strtoul(ptr, (char **)retptr, 0);
214 * Format string describing supplied size. This routine does the opposite job
215 * to memsize_parse(). Size in bytes is converted to string and if possible
216 * shortened by using k (kilobytes), m (megabytes) or g (gigabytes) suffix.
218 * Note, that this routine does not check for buffer overflow, it's the caller
219 * who must assure enough space.
221 * @param buf output buffer
222 * @param size size to be converted to string
224 static void memsize_format(char *buf, u32 size)
226 #define SIZE_GB ((u32)1024*1024*1024)
227 #define SIZE_MB ((u32)1024*1024)
228 #define SIZE_KB ((u32)1024)
230 if ((size % SIZE_GB) == 0)
231 sprintf(buf, "%lug", size/SIZE_GB);
232 else if ((size % SIZE_MB) == 0)
233 sprintf(buf, "%lum", size/SIZE_MB);
234 else if (size % SIZE_KB == 0)
235 sprintf(buf, "%luk", size/SIZE_KB);
237 sprintf(buf, "%lu", size);
241 * This routine does global indexing of all partitions. Resulting index for
242 * current partition is saved in 'mtddevnum'. Current partition name in
245 static void index_partitions(void)
249 struct part_info *part;
250 struct list_head *dentry;
251 struct mtd_device *dev;
253 DEBUGF("--- index partitions ---\n");
257 list_for_each(dentry, &devices) {
258 dev = list_entry(dentry, struct mtd_device, link);
259 if (dev == current_dev) {
260 mtddevnum += current_partnum;
261 sprintf(buf, "%d", mtddevnum);
262 setenv("mtddevnum", buf);
265 mtddevnum += dev->num_parts;
268 part = jffs2_part_info(current_dev, current_partnum);
269 setenv("mtddevname", part->name);
271 DEBUGF("=> mtddevnum %d,\n=> mtddevname %s\n", mtddevnum, part->name);
273 setenv("mtddevnum", NULL);
274 setenv("mtddevname", NULL);
276 DEBUGF("=> mtddevnum NULL\n=> mtddevname NULL\n");
281 * Save current device and partition in environment variable 'partition'.
283 static void current_save(void)
287 DEBUGF("--- current_save ---\n");
290 sprintf(buf, "%s%d,%d", MTD_DEV_TYPE(current_dev->id->type),
291 current_dev->id->num, current_partnum);
293 setenv("partition", buf);
294 strncpy(last_partition, buf, 16);
296 DEBUGF("=> partition %s\n", buf);
298 setenv("partition", NULL);
299 last_partition[0] = '\0';
301 DEBUGF("=> partition NULL\n");
307 * Performs sanity check for supplied NOR flash partition. Table of existing
308 * NOR flash devices is searched and partition device is located. Alignment
309 * with the granularity of NOR flash sectors is verified.
311 * @param id of the parent device
312 * @param part partition to validate
313 * @return 0 if partition is valid, 1 otherwise
315 static int part_validate_nor(struct mtdids *id, struct part_info *part)
317 #if (CONFIG_COMMANDS & CFG_CMD_FLASH)
318 /* info for FLASH chips */
319 extern flash_info_t flash_info[];
325 flash = &flash_info[id->num];
328 for (i = 0; i < flash->sector_count; i++) {
329 if ((flash->start[i] - flash->start[0]) == part->offset) {
334 if (offset_aligned == 0) {
335 printf("%s%d: partition (%s) start offset alignment incorrect\n",
336 MTD_DEV_TYPE(id->type), id->num, part->name);
340 end_offset = part->offset + part->size;
341 for (i = 0; i < flash->sector_count; i++) {
342 if ((flash->start[i] - flash->start[0]) == end_offset)
346 if (flash->size == end_offset)
349 printf("%s%d: partition (%s) size alignment incorrect\n",
350 MTD_DEV_TYPE(id->type), id->num, part->name);
356 * Performs sanity check for supplied NAND flash partition. Table of existing
357 * NAND flash devices is searched and partition device is located. Alignment
358 * with the granularity of nand erasesize is verified.
360 * @param id of the parent device
361 * @param part partition to validate
362 * @return 0 if partition is valid, 1 otherwise
364 static int part_validate_nand(struct mtdids *id, struct part_info *part)
366 #if defined(CONFIG_JFFS2_NAND) && (CONFIG_COMMANDS & CFG_CMD_NAND)
367 /* info for NAND chips */
368 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
369 struct nand_chip *nand;
371 nand = &nand_dev_desc[id->num];
373 if ((unsigned long)(part->offset) % nand->erasesize) {
374 printf("%s%d: partition (%s) start offset alignment incorrect\n",
375 MTD_DEV_TYPE(id->type), id->num, part->name);
379 if (part->size % nand->erasesize) {
380 printf("%s%d: partition (%s) size alignment incorrect\n",
381 MTD_DEV_TYPE(id->type), id->num, part->name);
392 * Performs sanity check for supplied partition. Offset and size are verified
393 * to be within valid range. Partition type is checked and either
394 * parts_validate_nor() or parts_validate_nand() is called with the argument
397 * @param id of the parent device
398 * @param part partition to validate
399 * @return 0 if partition is valid, 1 otherwise
401 static int part_validate(struct mtdids *id, struct part_info *part)
403 if (part->size == SIZE_REMAINING)
404 part->size = id->size - part->offset;
406 if (part->offset > id->size) {
407 printf("%s: offset %08lx beyond flash size %08lx\n",
408 id->mtd_id, part->offset, id->size);
412 if ((part->offset + part->size) <= part->offset) {
413 printf("%s%d: partition (%s) size too big\n",
414 MTD_DEV_TYPE(id->type), id->num, part->name);
418 if (part->offset + part->size > id->size) {
419 printf("%s: partitioning exceeds flash size\n", id->mtd_id);
423 if (id->type == MTD_DEV_TYPE_NAND)
424 return part_validate_nand(id, part);
425 else if (id->type == MTD_DEV_TYPE_NOR)
426 return part_validate_nor(id, part);
428 DEBUGF("part_validate: invalid dev type\n");
434 * Delete selected partition from the partion list of the specified device.
436 * @param dev device to delete partition from
437 * @param part partition to delete
438 * @return 0 on success, 1 otherwise
440 static int part_del(struct mtd_device *dev, struct part_info *part)
442 u8 current_save_needed = 0;
444 /* if there is only one partition, remove whole device */
445 if (dev->num_parts == 1)
446 return device_del(dev);
448 /* otherwise just delete this partition */
450 if (dev == current_dev) {
451 /* we are modyfing partitions for the current device,
453 struct part_info *curr_pi;
454 curr_pi = jffs2_part_info(current_dev, current_partnum);
457 if (curr_pi == part) {
458 printf("current partition deleted, resetting current to 0\n");
460 } else if (part->offset <= curr_pi->offset) {
463 current_save_needed = 1;
467 jffs2_free_cache(part);
468 list_del(&part->link);
472 if (current_save_needed > 0)
481 * Delete all partitions from parts head list, free memory.
483 * @param head list of partitions to delete
485 static void part_delall(struct list_head *head)
487 struct list_head *entry, *n;
488 struct part_info *part_tmp;
490 /* clean tmp_list and free allocated memory */
491 list_for_each_safe(entry, n, head) {
492 part_tmp = list_entry(entry, struct part_info, link);
494 jffs2_free_cache(part_tmp);
501 * Add new partition to the supplied partition list. Make sure partitions are
502 * sorted by offset in ascending order.
504 * @param head list this partition is to be added to
505 * @param new partition to be added
507 static int part_sort_add(struct mtd_device *dev, struct part_info *part)
509 struct list_head *entry;
510 struct part_info *new_pi, *curr_pi;
512 /* link partition to parrent dev */
515 if (list_empty(&dev->parts)) {
516 DEBUGF("part_sort_add: list empty\n");
517 list_add(&part->link, &dev->parts);
523 new_pi = list_entry(&part->link, struct part_info, link);
525 /* get current partition info if we are updating current device */
527 if (dev == current_dev)
528 curr_pi = jffs2_part_info(current_dev, current_partnum);
530 list_for_each(entry, &dev->parts) {
531 struct part_info *pi;
533 pi = list_entry(entry, struct part_info, link);
535 /* be compliant with kernel cmdline, allow only one partition at offset zero */
536 if ((new_pi->offset == pi->offset) && (pi->offset == 0)) {
537 printf("cannot add second partition at offset 0\n");
541 if (new_pi->offset <= pi->offset) {
542 list_add_tail(&part->link, entry);
545 if (curr_pi && (pi->offset <= curr_pi->offset)) {
546 /* we are modyfing partitions for the current
547 * device, update current */
557 list_add_tail(&part->link, &dev->parts);
564 * Add provided partition to the partition list of a given device.
566 * @param dev device to which partition is added
567 * @param part partition to be added
568 * @return 0 on success, 1 otherwise
570 static int part_add(struct mtd_device *dev, struct part_info *part)
572 /* verify alignment and size */
573 if (part_validate(dev->id, part) != 0)
576 /* partition is ok, add it to the list */
577 if (part_sort_add(dev, part) != 0)
584 * Parse one partition definition, allocate memory and return pointer to this
585 * location in retpart.
587 * @param partdef pointer to the partition definition string i.e. <part-def>
588 * @param ret output pointer to next char after parse completes (output)
589 * @param retpart pointer to the allocated partition (output)
590 * @return 0 on success, 1 otherwise
592 static int part_parse(const char *const partdef, const char **ret, struct part_info **retpart)
594 struct part_info *part;
596 unsigned long offset;
599 unsigned int mask_flags;
606 /* fetch the partition size */
608 /* assign all remaining space to this partition */
609 DEBUGF("'-': remaining size assigned\n");
610 size = SIZE_REMAINING;
613 size = memsize_parse(p, &p);
614 if (size < MIN_PART_SIZE) {
615 printf("partition size too small (%lx)\n", size);
620 /* check for offset */
621 offset = OFFSET_NOT_SPECIFIED;
624 offset = memsize_parse(p, &p);
627 /* now look for the name */
630 if ((p = strchr(name, ')')) == NULL) {
631 printf("no closing ) found in partition name\n");
634 name_len = p - name + 1;
635 if ((name_len - 1) == 0) {
636 printf("empty partition name\n");
641 /* 0x00000000@0x00000000 */
646 /* test for options */
648 if (strncmp(p, "ro", 2) == 0) {
649 mask_flags |= MTD_WRITEABLE;
653 /* check for next partition definition */
655 if (size == SIZE_REMAINING) {
657 printf("no partitions allowed after a fill-up partition\n");
661 } else if ((*p == ';') || (*p == '\0')) {
664 printf("unexpected character '%c' at the end of partition\n", *p);
669 /* allocate memory */
670 part = (struct part_info *)malloc(sizeof(struct part_info) + name_len);
672 printf("out of memory\n");
675 memset(part, 0, sizeof(struct part_info) + name_len);
677 part->offset = offset;
678 part->mask_flags = mask_flags;
679 part->name = (char *)(part + 1);
682 /* copy user provided name */
683 strncpy(part->name, name, name_len - 1);
686 /* auto generated name in form of size@offset */
687 sprintf(part->name, "0x%08lx@0x%08lx", size, offset);
691 part->name[name_len - 1] = '\0';
692 INIT_LIST_HEAD(&part->link);
694 DEBUGF("+ partition: name %-22s size 0x%08x offset 0x%08x mask flags %d\n",
695 part->name, part->size,
696 part->offset, part->mask_flags);
701 #endif/* #ifdef CONFIG_JFFS2_CMDLINE */
704 * Check device number to be within valid range for given device type.
706 * @param dev device to validate
707 * @return 0 if device is valid, 1 otherwise
709 static int device_validate(u8 type, u8 num, u32 *size)
711 if (type == MTD_DEV_TYPE_NOR) {
712 #if (CONFIG_COMMANDS & CFG_CMD_FLASH)
713 if (num < CFG_MAX_FLASH_BANKS) {
714 extern flash_info_t flash_info[];
715 *size = flash_info[num].size;
719 printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
720 MTD_DEV_TYPE(type), num, CFG_MAX_FLASH_BANKS - 1);
722 printf("support for FLASH devices not present\n");
724 } else if (type == MTD_DEV_TYPE_NAND) {
725 #if defined(CONFIG_JFFS2_NAND) && (CONFIG_COMMANDS & CFG_CMD_NAND)
726 if (num < CFG_MAX_NAND_DEVICE) {
727 extern struct nand_chip nand_dev_desc[CFG_MAX_NAND_DEVICE];
728 *size = nand_dev_desc[num].totlen;
732 printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
733 MTD_DEV_TYPE(type), num, CFG_MAX_NAND_DEVICE - 1);
735 printf("support for NAND devices not present\n");
742 #ifdef CONFIG_JFFS2_CMDLINE
744 * Delete all mtd devices from a supplied devices list, free memory allocated for
745 * each device and delete all device partitions.
747 * @return 0 on success, 1 otherwise
749 static int device_delall(struct list_head *head)
751 struct list_head *entry, *n;
752 struct mtd_device *dev_tmp;
754 /* clean devices list */
755 list_for_each_safe(entry, n, head) {
756 dev_tmp = list_entry(entry, struct mtd_device, link);
758 part_delall(&dev_tmp->parts);
761 INIT_LIST_HEAD(&devices);
767 * If provided device exists it's partitions are deleted, device is removed
768 * from device list and device memory is freed.
770 * @param dev device to be deleted
771 * @return 0 on success, 1 otherwise
773 static int device_del(struct mtd_device *dev)
775 part_delall(&dev->parts);
776 list_del(&dev->link);
779 if (dev == current_dev) {
780 /* we just deleted current device */
781 if (list_empty(&devices)) {
784 /* reset first partition from first dev from the
785 * devices list as current */
786 current_dev = list_entry(devices.next, struct mtd_device, link);
798 * Search global device list and return pointer to the device of type and num
801 * @param type device type
802 * @param num device number
803 * @return NULL if requested device does not exist
805 static struct mtd_device* device_find(u8 type, u8 num)
807 struct list_head *entry;
808 struct mtd_device *dev_tmp;
810 list_for_each(entry, &devices) {
811 dev_tmp = list_entry(entry, struct mtd_device, link);
813 if ((dev_tmp->id->type == type) && (dev_tmp->id->num == num))
821 * Add specified device to the global device list.
823 * @param dev device to be added
825 static void device_add(struct mtd_device *dev)
827 u8 current_save_needed = 0;
829 if (list_empty(&devices)) {
832 current_save_needed = 1;
835 list_add_tail(&dev->link, &devices);
837 if (current_save_needed > 0)
844 * Parse device type, name and mtd-id. If syntax is ok allocate memory and
845 * return pointer to the device structure.
847 * @param mtd_dev pointer to the device definition string i.e. <mtd-dev>
848 * @param ret output pointer to next char after parse completes (output)
849 * @param retdev pointer to the allocated device (output)
850 * @return 0 on success, 1 otherwise
852 static int device_parse(const char *const mtd_dev, const char **ret, struct mtd_device **retdev)
854 struct mtd_device *dev;
855 struct part_info *part;
858 unsigned int mtd_id_len;
859 const char *p, *pend;
861 struct list_head *entry, *n;
870 DEBUGF("===device_parse===\n");
874 if (!(p = strchr(mtd_id, ':'))) {
875 printf("no <mtd-id> identifier\n");
878 mtd_id_len = p - mtd_id + 1;
881 /* verify if we have a valid device specified */
882 if ((id = id_find_by_mtd_id(mtd_id, mtd_id_len - 1)) == NULL) {
883 printf("invalid mtd device '%.*s'\n", mtd_id_len - 1, mtd_id);
887 DEBUGF("dev type = %d (%s), dev num = %d, mtd-id = %s\n",
888 id->type, MTD_DEV_TYPE(id->type),
889 id->num, id->mtd_id);
890 pend = strchr(p, ';');
891 DEBUGF("parsing partitions %.*s\n", (pend ? pend - p : strlen(p)), p);
894 /* parse partitions */
898 if ((dev = device_find(id->type, id->num)) != NULL) {
899 /* if device already exists start at the end of the last partition */
900 part = list_entry(dev->parts.prev, struct part_info, link);
901 offset = part->offset + part->size;
904 while (p && (*p != '\0') && (*p != ';')) {
906 if ((part_parse(p, &p, &part) != 0) || (!part))
909 /* calculate offset when not specified */
910 if (part->offset == OFFSET_NOT_SPECIFIED)
911 part->offset = offset;
913 offset = part->offset;
915 /* verify alignment and size */
916 if (part_validate(id, part) != 0)
919 offset += part->size;
921 /* partition is ok, add it to the list */
922 list_add_tail(&part->link, &tmp_list);
927 part_delall(&tmp_list);
931 if (num_parts == 0) {
932 printf("no partitions for device %s%d (%s)\n",
933 MTD_DEV_TYPE(id->type), id->num, id->mtd_id);
937 DEBUGF("\ntotal partitions: %d\n", num_parts);
939 /* check for next device presence */
943 } else if (*p == '\0') {
946 printf("unexpected character '%c' at the end of device\n", *p);
952 /* allocate memory for mtd_device structure */
953 if ((dev = (struct mtd_device *)malloc(sizeof(struct mtd_device))) == NULL) {
954 printf("out of memory\n");
957 memset(dev, 0, sizeof(struct mtd_device));
959 dev->num_parts = 0; /* part_sort_add increments num_parts */
960 INIT_LIST_HEAD(&dev->parts);
961 INIT_LIST_HEAD(&dev->link);
963 /* move partitions from tmp_list to dev->parts */
964 list_for_each_safe(entry, n, &tmp_list) {
965 part = list_entry(entry, struct part_info, link);
967 if (part_sort_add(dev, part) != 0) {
980 * Initialize global device list.
982 * @return 0 on success, 1 otherwise
984 static int devices_init(void)
986 last_parts[0] = '\0';
990 return device_delall(&devices);
994 * Search global mtdids list and find id of requested type and number.
996 * @return pointer to the id if it exists, NULL otherwise
998 static struct mtdids* id_find(u8 type, u8 num)
1000 struct list_head *entry;
1003 list_for_each(entry, &mtdids) {
1004 id = list_entry(entry, struct mtdids, link);
1006 if ((id->type == type) && (id->num == num))
1014 * Search global mtdids list and find id of a requested mtd_id.
1016 * Note: first argument is not null terminated.
1018 * @param mtd_id string containing requested mtd_id
1019 * @param mtd_id_len length of supplied mtd_id
1020 * @return pointer to the id if it exists, NULL otherwise
1022 static struct mtdids* id_find_by_mtd_id(const char *mtd_id, unsigned int mtd_id_len)
1024 struct list_head *entry;
1027 DEBUGF("--- id_find_by_mtd_id: '%.*s' (len = %d)\n",
1028 mtd_id_len, mtd_id, mtd_id_len);
1030 list_for_each(entry, &mtdids) {
1031 id = list_entry(entry, struct mtdids, link);
1033 DEBUGF("entry: '%s' (len = %d)\n",
1034 id->mtd_id, strlen(id->mtd_id));
1036 if (mtd_id_len != strlen(id->mtd_id))
1038 if (strncmp(id->mtd_id, mtd_id, mtd_id_len) == 0)
1044 #endif /* #ifdef CONFIG_JFFS2_CMDLINE */
1047 * Parse device id string <dev-id> := 'nand'|'nor'<dev-num>, return device
1050 * @param id string describing device id
1051 * @param ret_id output pointer to next char after parse completes (output)
1052 * @param dev_type parsed device type (output)
1053 * @param dev_num parsed device number (output)
1054 * @return 0 on success, 1 otherwise
1056 int id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
1061 if (strncmp(p, "nand", 4) == 0) {
1062 *dev_type = MTD_DEV_TYPE_NAND;
1064 } else if (strncmp(p, "nor", 3) == 0) {
1065 *dev_type = MTD_DEV_TYPE_NOR;
1068 printf("incorrect device type in %s\n", id);
1073 printf("incorrect device number in %s\n", id);
1077 *dev_num = simple_strtoul(p, (char **)&p, 0);
1083 #ifdef CONFIG_JFFS2_CMDLINE
1085 * Process all devices and generate corresponding mtdparts string describing
1086 * all partitions on all devices.
1088 * @param buf output buffer holding generated mtdparts string (output)
1089 * @param buflen buffer size
1090 * @return 0 on success, 1 otherwise
1092 static int generate_mtdparts(char *buf, u32 buflen)
1094 struct list_head *pentry, *dentry;
1095 struct mtd_device *dev;
1096 struct part_info *part, *prev_part;
1099 u32 size, offset, len, part_cnt;
1100 u32 maxlen = buflen - 1;
1102 DEBUGF("--- generate_mtdparts ---\n");
1104 if (list_empty(&devices)) {
1109 sprintf(p, "mtdparts=");
1112 list_for_each(dentry, &devices) {
1113 dev = list_entry(dentry, struct mtd_device, link);
1116 len = strlen(dev->id->mtd_id) + 1;
1119 memcpy(p, dev->id->mtd_id, len - 1);
1124 /* format partitions */
1127 list_for_each(pentry, &dev->parts) {
1128 part = list_entry(pentry, struct part_info, link);
1130 offset = part->offset;
1133 /* partition size */
1134 memsize_format(tmpbuf, size);
1135 len = strlen(tmpbuf);
1138 memcpy(p, tmpbuf, len);
1143 /* add offset only when there is a gap between
1145 if ((!prev_part && (offset != 0)) ||
1146 (prev_part && ((prev_part->offset + prev_part->size) != part->offset))) {
1148 memsize_format(tmpbuf, offset);
1149 len = strlen(tmpbuf) + 1;
1153 memcpy(p, tmpbuf, len - 1);
1158 /* copy name only if user supplied */
1159 if(!part->auto_name) {
1160 len = strlen(part->name) + 2;
1165 memcpy(p, part->name, len - 2);
1172 if (part->mask_flags && MTD_WRITEABLE) {
1181 /* print ',' separator if there are other partitions
1183 if (dev->num_parts > part_cnt) {
1191 /* print ';' separator if there are other devices following */
1192 if (dentry->next != &devices) {
1200 /* we still have at least one char left, as we decremented maxlen at
1207 last_parts[0] = '\0';
1212 * Call generate_mtdparts to process all devices and generate corresponding
1213 * mtdparts string, save it in mtdparts environment variable.
1215 * @param buf output buffer holding generated mtdparts string (output)
1216 * @param buflen buffer size
1217 * @return 0 on success, 1 otherwise
1219 static int generate_mtdparts_save(char *buf, u32 buflen)
1223 ret = generate_mtdparts(buf, buflen);
1225 if ((buf[0] != '\0') && (ret == 0))
1226 setenv("mtdparts", buf);
1228 setenv("mtdparts", NULL);
1234 * Format and print out a partition list for each device from global device
1237 static void list_partitions(void)
1239 struct list_head *dentry, *pentry;
1240 struct part_info *part;
1241 struct mtd_device *dev;
1244 DEBUGF("\n---list_partitions---\n");
1245 list_for_each(dentry, &devices) {
1246 dev = list_entry(dentry, struct mtd_device, link);
1247 printf("\ndevice %s%d <%s>, # parts = %d\n",
1248 MTD_DEV_TYPE(dev->id->type), dev->id->num,
1249 dev->id->mtd_id, dev->num_parts);
1250 printf(" #: name\t\t\tsize\t\toffset\t\tmask_flags\n");
1252 /* list partitions for given device */
1254 list_for_each(pentry, &dev->parts) {
1255 part = list_entry(pentry, struct part_info, link);
1256 printf(" %d: %-22s\t0x%08x\t0x%08x\t%d\n",
1257 part_num, part->name, part->size,
1258 part->offset, part->mask_flags);
1263 if (list_empty(&devices))
1264 printf("no partitions defined\n");
1266 /* current_dev is not NULL only when we have non empty device list */
1268 part = jffs2_part_info(current_dev, current_partnum);
1270 printf("\nactive partition: %s%d,%d - (%s) 0x%08lx @ 0x%08lx\n",
1271 MTD_DEV_TYPE(current_dev->id->type),
1272 current_dev->id->num, current_partnum,
1273 part->name, part->size, part->offset);
1275 printf("could not get current partition info\n\n");
1279 printf("\ndefaults:\n");
1280 printf("mtdids : %s\n", mtdids_default);
1281 printf("mtdparts: %s\n", mtdparts_default);
1285 * Given partition identifier in form of <dev_type><dev_num>,<part_num> find
1286 * corresponding device and verify partition number.
1288 * @param id string describing device and partition
1289 * @param dev pointer to the requested device (output)
1290 * @param part_num verified partition number (output)
1291 * @param part pointer to requested partition (output)
1292 * @return 0 on success, 1 otherwise
1294 int find_dev_and_part(const char *id, struct mtd_device **dev,
1295 u8 *part_num, struct part_info **part)
1297 u8 type, dnum, pnum;
1300 DEBUGF("--- find_dev_and_part ---\nid = %s\n", id);
1307 if (id_parse(p, &p, &type, &dnum) != 0)
1310 if ((*p++ != ',') || (*p == '\0')) {
1311 printf("no partition number specified\n");
1314 pnum = simple_strtoul(p, (char **)&p, 0);
1316 printf("unexpected trailing character '%c'\n", *p);
1320 if ((*dev = device_find(type, dnum)) == NULL) {
1321 printf("no such device %s%d\n", MTD_DEV_TYPE(type), dnum);
1325 if ((*part = jffs2_part_info(*dev, pnum)) == NULL) {
1326 printf("no such partition\n");
1337 * Find and delete partition. For partition id format see find_dev_and_part().
1339 * @param id string describing device and partition
1340 * @return 0 on success, 1 otherwise
1342 static int delete_partition(const char *id)
1345 struct mtd_device *dev;
1346 struct part_info *part;
1348 if (find_dev_and_part(id, &dev, &pnum, &part) == 0) {
1350 DEBUGF("delete_partition: device = %s%d, partition %d = (%s) 0x%08lx@0x%08lx\n",
1351 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum,
1352 part->name, part->size, part->offset);
1354 if (part_del(dev, part) != 0)
1357 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
1358 printf("generated mtdparts too long, reseting to null\n");
1364 printf("partition %s not found\n", id);
1369 * Accept character string describing mtd partitions and call device_parse()
1370 * for each entry. Add created devices to the global devices list.
1372 * @param mtdparts string specifing mtd partitions
1373 * @return 0 on success, 1 otherwise
1375 static int parse_mtdparts(const char *const mtdparts)
1377 const char *p = mtdparts;
1378 struct mtd_device *dev;
1381 DEBUGF("\n---parse_mtdparts---\nmtdparts = %s\n\n", p);
1383 /* delete all devices and partitions */
1384 if (devices_init() != 0) {
1385 printf("could not initialise device list\n");
1389 /* re-read 'mtdparts' variable, devices_init may be updating env */
1390 p = getenv("mtdparts");
1392 if (strncmp(p, "mtdparts=", 9) != 0) {
1393 printf("mtdparts variable doesn't start with 'mtdparts='\n");
1398 while (p && (*p != '\0')) {
1400 if ((device_parse(p, &p, &dev) != 0) || (!dev))
1403 DEBUGF("+ device: %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
1404 dev->id->num, dev->id->mtd_id);
1406 /* check if parsed device is already on the list */
1407 if (device_find(dev->id->type, dev->id->num) != NULL) {
1408 printf("device %s%d redefined, please correct mtdparts variable\n",
1409 MTD_DEV_TYPE(dev->id->type), dev->id->num);
1413 list_add_tail(&dev->link, &devices);
1417 device_delall(&devices);
1425 * Parse provided string describing mtdids mapping (see file header for mtdids
1426 * variable format). Allocate memory for each entry and add all found entries
1427 * to the global mtdids list.
1429 * @param ids mapping string
1430 * @return 0 on success, 1 otherwise
1432 static int parse_mtdids(const char *const ids)
1434 const char *p = ids;
1438 struct list_head *entry, *n;
1439 struct mtdids *id_tmp;
1444 DEBUGF("\n---parse_mtdids---\nmtdids = %s\n\n", ids);
1446 /* clean global mtdids list */
1447 list_for_each_safe(entry, n, &mtdids) {
1448 id_tmp = list_entry(entry, struct mtdids, link);
1449 DEBUGF("mtdids del: %d %d\n", id_tmp->type, id_tmp->num);
1454 INIT_LIST_HEAD(&mtdids);
1456 while(p && (*p != '\0')) {
1459 /* parse 'nor'|'nand'<dev-num> */
1460 if (id_parse(p, &p, &type, &num) != 0)
1464 printf("mtdids: incorrect <dev-num>\n");
1469 /* check if requested device exists */
1470 if (device_validate(type, num, &size) != 0)
1473 /* locate <mtd-id> */
1475 if ((p = strchr(mtd_id, ',')) != NULL) {
1476 mtd_id_len = p - mtd_id + 1;
1479 mtd_id_len = strlen(mtd_id) + 1;
1481 if (mtd_id_len == 0) {
1482 printf("mtdids: no <mtd-id> identifier\n");
1486 /* check if this id is already on the list */
1487 int double_entry = 0;
1488 list_for_each(entry, &mtdids) {
1489 id_tmp = list_entry(entry, struct mtdids, link);
1490 if ((id_tmp->type == type) && (id_tmp->num == num)) {
1496 printf("device id %s%d redefined, please correct mtdids variable\n",
1497 MTD_DEV_TYPE(type), num);
1501 /* allocate mtdids structure */
1502 if (!(id = (struct mtdids *)malloc(sizeof(struct mtdids) + mtd_id_len))) {
1503 printf("out of memory\n");
1506 memset(id, 0, sizeof(struct mtdids) + mtd_id_len);
1510 id->mtd_id = (char *)(id + 1);
1511 strncpy(id->mtd_id, mtd_id, mtd_id_len - 1);
1512 id->mtd_id[mtd_id_len - 1] = '\0';
1513 INIT_LIST_HEAD(&id->link);
1515 DEBUGF("+ id %s%d\t%16d bytes\t%s\n",
1516 MTD_DEV_TYPE(id->type), id->num,
1517 id->size, id->mtd_id);
1519 list_add_tail(&id->link, &mtdids);
1523 /* clean mtdids list and free allocated memory */
1524 list_for_each_safe(entry, n, &mtdids) {
1525 id_tmp = list_entry(entry, struct mtdids, link);
1536 * Parse and initialize global mtdids mapping and create global
1537 * device/partition list.
1539 * @return 0 on success, 1 otherwise
1541 int mtdparts_init(void)
1543 static int initialized = 0;
1544 const char *ids, *parts;
1545 const char *current_partition;
1547 char tmp_ep[PARTITION_MAXLEN];
1549 DEBUGF("\n---mtdparts_init---\n");
1551 INIT_LIST_HEAD(&mtdids);
1552 INIT_LIST_HEAD(&devices);
1553 memset(last_ids, 0, MTDIDS_MAXLEN);
1554 memset(last_parts, 0, MTDPARTS_MAXLEN);
1555 memset(last_partition, 0, PARTITION_MAXLEN);
1560 ids = getenv("mtdids");
1561 parts = getenv("mtdparts");
1562 current_partition = getenv("partition");
1564 /* save it for later parsing, cannot rely on current partition pointer
1565 * as 'partition' variable may be updated during init */
1567 if (current_partition)
1568 strncpy(tmp_ep, current_partition, PARTITION_MAXLEN);
1570 DEBUGF("last_ids : %s\n", last_ids);
1571 DEBUGF("env_ids : %s\n", ids);
1572 DEBUGF("last_parts: %s\n", last_parts);
1573 DEBUGF("env_parts : %s\n\n", parts);
1575 DEBUGF("last_partition : %s\n", last_partition);
1576 DEBUGF("env_partition : %s\n", current_partition);
1578 /* if mtdids varible is empty try to use defaults */
1580 if (mtdids_default) {
1581 DEBUGF("mtdids variable not defined, using default\n");
1582 ids = mtdids_default;
1583 setenv("mtdids", (char *)ids);
1585 printf("mtdids not defined, no default present\n");
1589 if (strlen(ids) > MTDIDS_MAXLEN - 1) {
1590 printf("mtdids too long (> %d)\n", MTDIDS_MAXLEN);
1594 /* do no try to use defaults when mtdparts variable is not defined,
1595 * just check the length */
1597 printf("mtdparts variable not set, see 'help mtdparts'\n");
1599 if (parts && (strlen(parts) > MTDPARTS_MAXLEN - 1)) {
1600 printf("mtdparts too long (> %d)\n", MTDPARTS_MAXLEN);
1604 /* check if we have already parsed those mtdids */
1605 if ((last_ids[0] != '\0') && (strcmp(last_ids, ids) == 0)) {
1610 if (parse_mtdids(ids) != 0) {
1615 /* ok it's good, save new ids */
1616 strncpy(last_ids, ids, MTDIDS_MAXLEN);
1619 /* parse partitions if either mtdparts or mtdids were updated */
1620 if (parts && ((last_parts[0] == '\0') || ((strcmp(last_parts, parts) != 0)) || ids_changed)) {
1621 if (parse_mtdparts(parts) != 0)
1624 if (list_empty(&devices)) {
1625 printf("mtdparts_init: no valid partitions\n");
1629 /* ok it's good, save new parts */
1630 strncpy(last_parts, parts, MTDPARTS_MAXLEN);
1632 /* reset first partition from first dev from the list as current */
1633 current_dev = list_entry(devices.next, struct mtd_device, link);
1634 current_partnum = 0;
1637 DEBUGF("mtdparts_init: current_dev = %s%d, current_partnum = %d\n",
1638 MTD_DEV_TYPE(current_dev->id->type),
1639 current_dev->id->num, current_partnum);
1642 /* mtdparts variable was reset to NULL, delete all devices/partitions */
1643 if (!parts && (last_parts[0] != '\0'))
1644 return devices_init();
1646 /* do not process current partition if mtdparts variable is null */
1650 /* is current partition set in environment? if so, use it */
1651 if ((tmp_ep[0] != '\0') && (strcmp(tmp_ep, last_partition) != 0)) {
1652 struct part_info *p;
1653 struct mtd_device *cdev;
1656 DEBUGF("--- getting current partition: %s\n", tmp_ep);
1658 if (find_dev_and_part(tmp_ep, &cdev, &pnum, &p) == 0) {
1660 current_partnum = pnum;
1663 } else if (getenv("partition") == NULL) {
1664 DEBUGF("no partition variable set, setting...\n");
1670 #else /* #ifdef CONFIG_JFFS2_CMDLINE */
1672 * 'Static' version of command line mtdparts_init() routine. Single partition on
1673 * a single device configuration.
1677 * Parse and initialize global mtdids mapping and create global
1678 * device/partition list.
1680 * @return 0 on success, 1 otherwise
1682 int mtdparts_init(void)
1684 static int initialized = 0;
1688 DEBUGF("\n---mtdparts_init---\n");
1691 struct part_info *part;
1694 current_dev = (struct mtd_device *)
1695 malloc(sizeof(struct mtd_device) +
1696 sizeof(struct part_info) +
1697 sizeof(struct mtdids));
1699 printf("out of memory\n");
1702 memset(current_dev, 0, sizeof(struct mtd_device) +
1703 sizeof(struct part_info) + sizeof(struct mtdids));
1705 id = (struct mtdids *)(current_dev + 1);
1706 part = (struct part_info *)(id + 1);
1709 id->mtd_id = "single part";
1711 #if defined(CONFIG_JFFS2_DEV)
1712 dev_name = CONFIG_JFFS2_DEV;
1717 if ((id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
1718 (device_validate(id->type, id->num, &size) != 0)) {
1719 printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
1724 INIT_LIST_HEAD(&id->link);
1726 DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
1727 id->type, id->num, id->size, id->mtd_id);
1730 part->name = "static";
1731 part->auto_name = 0;
1733 #if defined(CONFIG_JFFS2_PART_SIZE)
1734 part->size = CONFIG_JFFS2_PART_SIZE;
1736 part->size = SIZE_REMAINING;
1739 #if defined(CONFIG_JFFS2_PART_OFFSET)
1740 part->offset = CONFIG_JFFS2_PART_OFFSET;
1742 part->offset = 0x00000000;
1745 part->dev = current_dev;
1746 INIT_LIST_HEAD(&part->link);
1748 /* recalculate size if needed */
1749 if (part->size == SIZE_REMAINING)
1750 part->size = id->size - part->offset;
1752 DEBUGF("part : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
1753 part->name, part->size, part->offset);
1756 current_dev->id = id;
1757 INIT_LIST_HEAD(¤t_dev->link);
1758 current_dev->num_parts = 1;
1759 INIT_LIST_HEAD(¤t_dev->parts);
1760 list_add(&part->link, ¤t_dev->parts);
1765 #endif /* #ifdef CONFIG_JFFS2_CMDLINE */
1768 * Return pointer to the partition of a requested number from a requested
1771 * @param dev device that is to be searched for a partition
1772 * @param part_num requested partition number
1773 * @return pointer to the part_info, NULL otherwise
1775 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
1777 struct list_head *entry;
1778 struct part_info *part;
1784 DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
1785 part_num, MTD_DEV_TYPE(dev->id->type),
1786 dev->id->num, dev->id->mtd_id);
1788 if (part_num >= dev->num_parts) {
1789 printf("invalid partition number %d for device %s%d (%s)\n",
1790 part_num, MTD_DEV_TYPE(dev->id->type),
1791 dev->id->num, dev->id->mtd_id);
1795 /* locate partition number, return it */
1797 list_for_each(entry, &dev->parts) {
1798 part = list_entry(entry, struct part_info, link);
1800 if (part_num == num++) {
1808 /***************************************************/
1809 /* U-boot commands */
1810 /***************************************************/
1813 * Routine implementing fsload u-boot command. This routine tries to load
1814 * a requested file from jffs2/cramfs filesystem on a current partition.
1816 * @param cmdtp command internal data
1817 * @param flag command flag
1818 * @param argc number of arguments supplied to the command
1819 * @param argv arguments list
1820 * @return 0 on success, 1 otherwise
1822 int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
1827 struct part_info *part;
1828 ulong offset = load_addr;
1830 /* pre-set Boot file name */
1831 if ((filename = getenv("bootfile")) == NULL) {
1832 filename = "uImage";
1839 offset = simple_strtoul(argv[1], NULL, 16);
1844 /* make sure we are in sync with env variables */
1845 if (mtdparts_init() !=0)
1848 if ((part = jffs2_part_info(current_dev, current_partnum))){
1850 /* check partition type for cramfs */
1851 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
1852 printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
1854 if (cramfs_check(part)) {
1855 size = cramfs_load ((char *) offset, part, filename);
1857 /* if this is not cramfs assume jffs2 */
1858 size = jffs2_1pass_load((char *)offset, part, filename);
1863 printf("### %s load complete: %d bytes loaded to 0x%lx\n",
1864 fsname, size, offset);
1865 sprintf(buf, "%x", size);
1866 setenv("filesize", buf);
1868 printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
1877 * Routine implementing u-boot ls command which lists content of a given
1878 * directory on a current partition.
1880 * @param cmdtp command internal data
1881 * @param flag command flag
1882 * @param argc number of arguments supplied to the command
1883 * @param argv arguments list
1884 * @return 0 on success, 1 otherwise
1886 int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
1888 char *filename = "/";
1890 struct part_info *part;
1895 /* make sure we are in sync with env variables */
1896 if (mtdparts_init() !=0)
1899 if ((part = jffs2_part_info(current_dev, current_partnum))){
1901 /* check partition type for cramfs */
1902 if (cramfs_check(part)) {
1903 ret = cramfs_ls (part, filename);
1905 /* if this is not cramfs assume jffs2 */
1906 ret = jffs2_1pass_ls(part, filename);
1915 * Routine implementing u-boot fsinfo command. This routine prints out
1916 * miscellaneous filesystem informations/statistics.
1918 * @param cmdtp command internal data
1919 * @param flag command flag
1920 * @param argc number of arguments supplied to the command
1921 * @param argv arguments list
1922 * @return 0 on success, 1 otherwise
1924 int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
1926 struct part_info *part;
1930 /* make sure we are in sync with env variables */
1931 if (mtdparts_init() !=0)
1934 if ((part = jffs2_part_info(current_dev, current_partnum))){
1936 /* check partition type for cramfs */
1937 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
1938 printf("### filesystem type is %s\n", fsname);
1940 if (cramfs_check(part)) {
1941 ret = cramfs_info (part);
1943 /* if this is not cramfs assume jffs2 */
1944 ret = jffs2_1pass_info(part);
1952 /* command line only */
1953 #ifdef CONFIG_JFFS2_CMDLINE
1955 * Routine implementing u-boot chpart command. Sets new current partition based
1956 * on the user supplied partition id. For partition id format see find_dev_and_part().
1958 * @param cmdtp command internal data
1959 * @param flag command flag
1960 * @param argc number of arguments supplied to the command
1961 * @param argv arguments list
1962 * @return 0 on success, 1 otherwise
1964 int do_jffs2_chpart(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
1966 /* command line only */
1967 struct mtd_device *dev;
1968 struct part_info *part;
1971 if (mtdparts_init() !=0)
1975 printf("no partition id specified\n");
1979 if (find_dev_and_part(argv[1], &dev, &pnum, &part) != 0)
1983 current_partnum = pnum;
1986 printf("partition changed to %s%d,%d\n",
1987 MTD_DEV_TYPE(dev->id->type), dev->id->num, pnum);
1993 * Routine implementing u-boot mtdparts command. Initialize/update default global
1994 * partition list and process user partition request (list, add, del).
1996 * @param cmdtp command internal data
1997 * @param flag command flag
1998 * @param argc number of arguments supplied to the command
1999 * @param argv arguments list
2000 * @return 0 on success, 1 otherwise
2002 int do_jffs2_mtdparts(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
2005 if (strcmp(argv[1], "default") == 0) {
2006 setenv("mtdids", (char *)mtdids_default);
2007 setenv("mtdparts", (char *)mtdparts_default);
2008 setenv("partition", NULL);
2012 } else if (strcmp(argv[1], "delall") == 0) {
2013 /* this may be the first run, initialize lists if needed */
2016 setenv("mtdparts", NULL);
2018 /* devices_init() calls current_save() */
2019 return devices_init();
2023 /* make sure we are in sync with env variables */
2024 if (mtdparts_init() != 0)
2032 /* mtdparts add <mtd-dev> <size>[@<offset>] <name> [ro] */
2033 if (((argc == 5) || (argc == 6)) && (strcmp(argv[1], "add") == 0)) {
2034 #define PART_ADD_DESC_MAXLEN 64
2035 char tmpbuf[PART_ADD_DESC_MAXLEN];
2037 struct mtd_device *dev;
2038 struct mtd_device *dev_tmp;
2040 struct part_info *p;
2042 if (id_parse(argv[2], NULL, &type, &num) != 0)
2045 if ((id = id_find(type, num)) == NULL) {
2046 printf("no such device %s defined in mtdids variable\n", argv[2]);
2050 len = strlen(id->mtd_id) + 1; /* 'mtd_id:' */
2051 len += strlen(argv[3]); /* size@offset */
2052 len += strlen(argv[4]) + 2; /* '(' name ')' */
2053 if (argv[5] && (strlen(argv[5]) == 2))
2054 len += 2; /* 'ro' */
2056 if (len >= PART_ADD_DESC_MAXLEN) {
2057 printf("too long partition description\n");
2060 sprintf(tmpbuf, "%s:%s(%s)%s",
2061 id->mtd_id, argv[3], argv[4], argv[5] ? argv[5] : "");
2062 DEBUGF("add tmpbuf: %s\n", tmpbuf);
2064 if ((device_parse(tmpbuf, NULL, &dev) != 0) || (!dev))
2067 DEBUGF("+ %s\t%d\t%s\n", MTD_DEV_TYPE(dev->id->type),
2068 dev->id->num, dev->id->mtd_id);
2070 if ((dev_tmp = device_find(dev->id->type, dev->id->num)) == NULL) {
2073 /* merge new partition with existing ones*/
2074 p = list_entry(dev->parts.next, struct part_info, link);
2075 if (part_add(dev_tmp, p) != 0) {
2081 if (generate_mtdparts_save(last_parts, MTDPARTS_MAXLEN) != 0) {
2082 printf("generated mtdparts too long, reseting to null\n");
2089 /* mtdparts del part-id */
2090 if ((argc == 3) && (strcmp(argv[1], "del") == 0)) {
2091 DEBUGF("del: part-id = %s\n", argv[2]);
2093 return delete_partition(argv[2]);
2096 printf ("Usage:\n%s\n", cmdtp->usage);
2099 #endif /* #ifdef CONFIG_JFFS2_CMDLINE */
2101 /***************************************************/
2103 fsload, 3, 0, do_jffs2_fsload,
2104 "fsload\t- load binary file from a filesystem image\n",
2105 "[ off ] [ filename ]\n"
2106 " - load binary file from flash bank\n"
2107 " with offset 'off'\n"
2110 ls, 2, 1, do_jffs2_ls,
2111 "ls\t- list files in a directory (default /)\n",
2113 " - list files in a directory.\n"
2117 fsinfo, 1, 1, do_jffs2_fsinfo,
2118 "fsinfo\t- print information about filesystems\n",
2119 " - print information about filesystems\n"
2122 #ifdef CONFIG_JFFS2_CMDLINE
2124 chpart, 2, 0, do_jffs2_chpart,
2125 "chpart\t- change active partition\n",
2127 " - change active partition (e.g. part-id = nand0,1)\n"
2131 mtdparts, 6, 0, do_jffs2_mtdparts,
2132 "mtdparts- define flash/nand partitions\n",
2134 " - list partition table\n"
2136 " - delete all partitions\n"
2137 "mtdparts del part-id\n"
2138 " - delete partition (e.g. part-id = nand0,1)\n"
2139 "mtdparts add <mtd-dev> <size>[@<offset>] [<name>] [ro]\n"
2140 " - add partition\n"
2141 "mtdparts default\n"
2142 " - reset partition table to defaults\n\n"
2144 "this command uses three environment variables:\n\n"
2145 "'partition' - keeps current partition identifier\n\n"
2146 "partition := <part-id>\n"
2147 "<part-id> := <dev-id>,part_num\n\n"
2148 "'mtdids' - linux kernel mtd device id <-> u-boot device id mapping\n\n"
2149 "mtdids=<idmap>[,<idmap>,...]\n\n"
2150 "<idmap> := <dev-id>=<mtd-id>\n"
2151 "<dev-id> := 'nand'|'nor'<dev-num>\n"
2152 "<dev-num> := mtd device number, 0...\n"
2153 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n\n"
2154 "'mtdparts' - partition list\n\n"
2155 "mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]\n\n"
2156 "<mtd-def> := <mtd-id>:<part-def>[,<part-def>...]\n"
2157 "<mtd-id> := unique device tag used by linux kernel to find mtd device (mtd->name)\n"
2158 "<part-def> := <size>[@<offset>][<name>][<ro-flag>]\n"
2159 "<size> := standard linux memsize OR '-' to denote all remaining space\n"
2160 "<offset> := partition start offset within the device\n"
2161 "<name> := '(' NAME ')'\n"
2162 "<ro-flag> := when set to 'ro' makes partition read-only (not used, passed to kernel)\n"
2164 #endif /* #ifdef CONFIG_JFFS2_CMDLINE */
2166 /***************************************************/
2168 #endif /* CFG_CMD_JFFS2 */