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'|'onenand'<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/list.h>
95 #include <linux/ctype.h>
96 #include <cramfs/cramfs_fs.h>
98 #if defined(CONFIG_CMD_NAND)
99 #ifdef CONFIG_NAND_LEGACY
100 #include <linux/mtd/nand_legacy.h>
101 #else /* !CONFIG_NAND_LEGACY */
102 #include <linux/mtd/nand.h>
104 #endif /* !CONFIG_NAND_LEGACY */
107 #if defined(CONFIG_CMD_ONENAND)
108 #include <linux/mtd/mtd.h>
109 #include <linux/mtd/onenand.h>
110 #include <onenand_uboot.h>
113 /* enable/disable debugging messages */
118 # define DEBUGF(fmt, args...) printf(fmt ,##args)
120 # define DEBUGF(fmt, args...)
123 /* special size referring to all the remaining space in a partition */
124 #define SIZE_REMAINING 0xFFFFFFFF
126 /* special offset value, it is used when not provided by user
128 * this value is used temporarily during parsing, later such offests
129 * are recalculated */
130 #define OFFSET_NOT_SPECIFIED 0xFFFFFFFF
132 /* minimum partition size */
133 #define MIN_PART_SIZE 4096
135 /* this flag needs to be set in part_info struct mask_flags
136 * field for read-only partitions */
137 #define MTD_WRITEABLE_CMD 1
139 /* current active device and partition number */
140 static struct mtd_device *current_dev = NULL;
141 static u8 current_partnum = 0;
143 #if defined(CONFIG_CMD_CRAMFS)
144 extern int cramfs_check (struct part_info *info);
145 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
146 extern int cramfs_ls (struct part_info *info, char *filename);
147 extern int cramfs_info (struct part_info *info);
149 /* defining empty macros for function names is ugly but avoids ifdef clutter
150 * all over the code */
151 #define cramfs_check(x) (0)
152 #define cramfs_load(x,y,z) (-1)
153 #define cramfs_ls(x,y) (0)
154 #define cramfs_info(x) (0)
157 #ifndef CONFIG_CMD_MTDPARTS
159 * Check device number to be within valid range for given device type.
161 * @param dev device to validate
162 * @return 0 if device is valid, 1 otherwise
164 static int mtd_device_validate(u8 type, u8 num, u32 *size)
166 if (type == MTD_DEV_TYPE_NOR) {
167 #if defined(CONFIG_CMD_FLASH)
168 if (num < CONFIG_SYS_MAX_FLASH_BANKS) {
169 extern flash_info_t flash_info[];
170 *size = flash_info[num].size;
175 printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
176 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_FLASH_BANKS - 1);
178 printf("support for FLASH devices not present\n");
180 } else if (type == MTD_DEV_TYPE_NAND) {
181 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
182 if (num < CONFIG_SYS_MAX_NAND_DEVICE) {
183 #ifndef CONFIG_NAND_LEGACY
184 *size = nand_info[num].size;
186 extern struct nand_chip nand_dev_desc[CONFIG_SYS_MAX_NAND_DEVICE];
187 *size = nand_dev_desc[num].totlen;
192 printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
193 MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1);
195 printf("support for NAND devices not present\n");
197 } else if (type == MTD_DEV_TYPE_ONENAND) {
198 #if defined(CONFIG_CMD_ONENAND)
199 *size = onenand_mtd.size;
202 printf("support for OneNAND devices not present\n");
205 printf("Unknown defice type %d\n", type);
211 * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
212 * return device type and number.
214 * @param id string describing device id
215 * @param ret_id output pointer to next char after parse completes (output)
216 * @param dev_type parsed device type (output)
217 * @param dev_num parsed device number (output)
218 * @return 0 on success, 1 otherwise
220 static int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
225 if (strncmp(p, "nand", 4) == 0) {
226 *dev_type = MTD_DEV_TYPE_NAND;
228 } else if (strncmp(p, "nor", 3) == 0) {
229 *dev_type = MTD_DEV_TYPE_NOR;
231 } else if (strncmp(p, "onenand", 7) == 0) {
232 *dev_type = MTD_DEV_TYPE_ONENAND;
235 printf("incorrect device type in %s\n", id);
240 printf("incorrect device number in %s\n", id);
244 *dev_num = simple_strtoul(p, (char **)&p, 0);
251 * 'Static' version of command line mtdparts_init() routine. Single partition on
252 * a single device configuration.
256 * Calculate sector size.
258 * @return sector size
260 static inline u32 get_part_sector_size_nand(struct mtdids *id)
262 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
263 #if defined(CONFIG_NAND_LEGACY)
264 extern struct nand_chip nand_dev_desc[CONFIG_SYS_MAX_NAND_DEVICE];
266 return nand_dev_desc[id->num].erasesize;
270 nand = &nand_info[id->num];
272 return nand->erasesize;
280 static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part)
282 #if defined(CONFIG_CMD_FLASH)
283 extern flash_info_t flash_info[];
285 u32 end_phys, start_phys, sector_size = 0, size = 0;
289 flash = &flash_info[id->num];
291 start_phys = flash->start[0] + part->offset;
292 end_phys = start_phys + part->size;
294 for (i = 0; i < flash->sector_count; i++) {
295 if (flash->start[i] >= end_phys)
298 if (flash->start[i] >= start_phys) {
299 if (i == flash->sector_count - 1) {
300 size = flash->start[0] + flash->size - flash->start[i];
302 size = flash->start[i+1] - flash->start[i];
305 if (sector_size < size)
317 static inline u32 get_part_sector_size_onenand(void)
319 #if defined(CONFIG_CMD_ONENAND)
320 struct mtd_info *mtd;
324 return mtd->erasesize;
331 static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part)
333 if (id->type == MTD_DEV_TYPE_NAND)
334 return get_part_sector_size_nand(id);
335 else if (id->type == MTD_DEV_TYPE_NOR)
336 return get_part_sector_size_nor(id, part);
337 else if (id->type == MTD_DEV_TYPE_ONENAND)
338 return get_part_sector_size_onenand();
340 DEBUGF("Error: Unknown device type.\n");
346 * Parse and initialize global mtdids mapping and create global
347 * device/partition list.
349 * @return 0 on success, 1 otherwise
351 int mtdparts_init(void)
353 static int initialized = 0;
357 DEBUGF("\n---mtdparts_init---\n");
360 struct part_info *part;
363 current_dev = (struct mtd_device *)
364 malloc(sizeof(struct mtd_device) +
365 sizeof(struct part_info) +
366 sizeof(struct mtdids));
368 printf("out of memory\n");
371 memset(current_dev, 0, sizeof(struct mtd_device) +
372 sizeof(struct part_info) + sizeof(struct mtdids));
374 id = (struct mtdids *)(current_dev + 1);
375 part = (struct part_info *)(id + 1);
378 id->mtd_id = "single part";
380 #if defined(CONFIG_JFFS2_DEV)
381 dev_name = CONFIG_JFFS2_DEV;
386 if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
387 (mtd_device_validate(id->type, id->num, &size) != 0)) {
388 printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
393 INIT_LIST_HEAD(&id->link);
395 DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
396 id->type, id->num, id->size, id->mtd_id);
399 part->name = "static";
402 #if defined(CONFIG_JFFS2_PART_SIZE)
403 part->size = CONFIG_JFFS2_PART_SIZE;
405 part->size = SIZE_REMAINING;
408 #if defined(CONFIG_JFFS2_PART_OFFSET)
409 part->offset = CONFIG_JFFS2_PART_OFFSET;
411 part->offset = 0x00000000;
414 part->sector_size = get_part_sector_size(id, part);
416 part->dev = current_dev;
417 INIT_LIST_HEAD(&part->link);
419 /* recalculate size if needed */
420 if (part->size == SIZE_REMAINING)
421 part->size = id->size - part->offset;
423 DEBUGF("part : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
424 part->name, part->size, part->offset);
427 current_dev->id = id;
428 INIT_LIST_HEAD(¤t_dev->link);
429 current_dev->num_parts = 1;
430 INIT_LIST_HEAD(¤t_dev->parts);
431 list_add(&part->link, ¤t_dev->parts);
436 #endif /* #ifndef CONFIG_CMD_MTDPARTS */
439 * Return pointer to the partition of a requested number from a requested
442 * @param dev device that is to be searched for a partition
443 * @param part_num requested partition number
444 * @return pointer to the part_info, NULL otherwise
446 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
448 struct list_head *entry;
449 struct part_info *part;
455 DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
456 part_num, MTD_DEV_TYPE(dev->id->type),
457 dev->id->num, dev->id->mtd_id);
459 if (part_num >= dev->num_parts) {
460 printf("invalid partition number %d for device %s%d (%s)\n",
461 part_num, MTD_DEV_TYPE(dev->id->type),
462 dev->id->num, dev->id->mtd_id);
466 /* locate partition number, return it */
468 list_for_each(entry, &dev->parts) {
469 part = list_entry(entry, struct part_info, link);
471 if (part_num == num++) {
479 /***************************************************/
480 /* U-boot commands */
481 /***************************************************/
484 * Routine implementing fsload u-boot command. This routine tries to load
485 * a requested file from jffs2/cramfs filesystem on a current partition.
487 * @param cmdtp command internal data
488 * @param flag command flag
489 * @param argc number of arguments supplied to the command
490 * @param argv arguments list
491 * @return 0 on success, 1 otherwise
493 int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
498 struct part_info *part;
499 ulong offset = load_addr;
501 /* pre-set Boot file name */
502 if ((filename = getenv("bootfile")) == NULL) {
510 offset = simple_strtoul(argv[1], NULL, 16);
515 /* make sure we are in sync with env variables */
516 if (mtdparts_init() !=0)
519 if ((part = jffs2_part_info(current_dev, current_partnum))){
521 /* check partition type for cramfs */
522 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
523 printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
525 if (cramfs_check(part)) {
526 size = cramfs_load ((char *) offset, part, filename);
528 /* if this is not cramfs assume jffs2 */
529 size = jffs2_1pass_load((char *)offset, part, filename);
534 printf("### %s load complete: %d bytes loaded to 0x%lx\n",
535 fsname, size, offset);
536 sprintf(buf, "%x", size);
537 setenv("filesize", buf);
539 printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
548 * Routine implementing u-boot ls command which lists content of a given
549 * directory on a current partition.
551 * @param cmdtp command internal data
552 * @param flag command flag
553 * @param argc number of arguments supplied to the command
554 * @param argv arguments list
555 * @return 0 on success, 1 otherwise
557 int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
559 char *filename = "/";
561 struct part_info *part;
566 /* make sure we are in sync with env variables */
567 if (mtdparts_init() !=0)
570 if ((part = jffs2_part_info(current_dev, current_partnum))){
572 /* check partition type for cramfs */
573 if (cramfs_check(part)) {
574 ret = cramfs_ls (part, filename);
576 /* if this is not cramfs assume jffs2 */
577 ret = jffs2_1pass_ls(part, filename);
586 * Routine implementing u-boot fsinfo command. This routine prints out
587 * miscellaneous filesystem informations/statistics.
589 * @param cmdtp command internal data
590 * @param flag command flag
591 * @param argc number of arguments supplied to the command
592 * @param argv arguments list
593 * @return 0 on success, 1 otherwise
595 int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char *argv[])
597 struct part_info *part;
601 /* make sure we are in sync with env variables */
602 if (mtdparts_init() !=0)
605 if ((part = jffs2_part_info(current_dev, current_partnum))){
607 /* check partition type for cramfs */
608 fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
609 printf("### filesystem type is %s\n", fsname);
611 if (cramfs_check(part)) {
612 ret = cramfs_info (part);
614 /* if this is not cramfs assume jffs2 */
615 ret = jffs2_1pass_info(part);
623 /***************************************************/
625 fsload, 3, 0, do_jffs2_fsload,
626 "load binary file from a filesystem image",
627 "[ off ] [ filename ]\n"
628 " - load binary file from flash bank\n"
629 " with offset 'off'\n"
632 ls, 2, 1, do_jffs2_ls,
633 "list files in a directory (default /)",
635 " - list files in a directory.\n"
639 fsinfo, 1, 1, do_jffs2_fsinfo,
640 "print information about filesystems",
641 " - print information about filesystems\n"
643 /***************************************************/