xref: /openbmc/u-boot/cmd/jffs2.c (revision e625881a)
1 /*
2  * (C) Copyright 2002
3  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4  *
5  * (C) Copyright 2002
6  * Robert Schwebel, Pengutronix, <r.schwebel@pengutronix.de>
7  *
8  * (C) Copyright 2003
9  * Kai-Uwe Bloem, Auerswald GmbH & Co KG, <linux-development@auerswald.de>
10  *
11  * (C) Copyright 2005
12  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
13  *
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
16  *   kernel tree.
17  *
18  *   $Id: cmdlinepart.c,v 1.17 2004/11/26 11:18:47 lavinen Exp $
19  *   Copyright 2002 SYSGO Real-Time Solutions GmbH
20  *
21  * SPDX-License-Identifier:	GPL-2.0+
22  */
23 
24 /*
25  * Three environment variables are used by the parsing routines:
26  *
27  * 'partition' - keeps current partition identifier
28  *
29  * partition  := <part-id>
30  * <part-id>  := <dev-id>,part_num
31  *
32  *
33  * 'mtdids' - linux kernel mtd device id <-> u-boot device id mapping
34  *
35  * mtdids=<idmap>[,<idmap>,...]
36  *
37  * <idmap>    := <dev-id>=<mtd-id>
38  * <dev-id>   := 'nand'|'nor'|'onenand'<dev-num>
39  * <dev-num>  := mtd device number, 0...
40  * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
41  *
42  *
43  * 'mtdparts' - partition list
44  *
45  * mtdparts=mtdparts=<mtd-def>[;<mtd-def>...]
46  *
47  * <mtd-def>  := <mtd-id>:<part-def>[,<part-def>...]
48  * <mtd-id>   := unique device tag used by linux kernel to find mtd device (mtd->name)
49  * <part-def> := <size>[@<offset>][<name>][<ro-flag>]
50  * <size>     := standard linux memsize OR '-' to denote all remaining space
51  * <offset>   := partition start offset within the device
52  * <name>     := '(' NAME ')'
53  * <ro-flag>  := when set to 'ro' makes partition read-only (not used, passed to kernel)
54  *
55  * Notes:
56  * - each <mtd-id> used in mtdparts must albo exist in 'mtddis' mapping
57  * - if the above variables are not set defaults for a given target are used
58  *
59  * Examples:
60  *
61  * 1 NOR Flash, with 1 single writable partition:
62  * mtdids=nor0=edb7312-nor
63  * mtdparts=mtdparts=edb7312-nor:-
64  *
65  * 1 NOR Flash with 2 partitions, 1 NAND with one
66  * mtdids=nor0=edb7312-nor,nand0=edb7312-nand
67  * mtdparts=mtdparts=edb7312-nor:256k(ARMboot)ro,-(root);edb7312-nand:-(home)
68  *
69  */
70 
71 /*
72  * JFFS2/CRAMFS support
73  */
74 #include <common.h>
75 #include <command.h>
76 #include <malloc.h>
77 #include <jffs2/jffs2.h>
78 #include <linux/list.h>
79 #include <linux/ctype.h>
80 #include <cramfs/cramfs_fs.h>
81 
82 #if defined(CONFIG_CMD_NAND)
83 #include <linux/mtd/nand.h>
84 #include <nand.h>
85 #endif
86 
87 #if defined(CONFIG_CMD_ONENAND)
88 #include <linux/mtd/mtd.h>
89 #include <linux/mtd/onenand.h>
90 #include <onenand_uboot.h>
91 #endif
92 
93 /* enable/disable debugging messages */
94 #define	DEBUG_JFFS
95 #undef	DEBUG_JFFS
96 
97 #ifdef  DEBUG_JFFS
98 # define DEBUGF(fmt, args...)	printf(fmt ,##args)
99 #else
100 # define DEBUGF(fmt, args...)
101 #endif
102 
103 /* special size referring to all the remaining space in a partition */
104 #define SIZE_REMAINING		0xFFFFFFFF
105 
106 /* special offset value, it is used when not provided by user
107  *
108  * this value is used temporarily during parsing, later such offests
109  * are recalculated */
110 #define OFFSET_NOT_SPECIFIED	0xFFFFFFFF
111 
112 /* minimum partition size */
113 #define MIN_PART_SIZE		4096
114 
115 /* this flag needs to be set in part_info struct mask_flags
116  * field for read-only partitions */
117 #define MTD_WRITEABLE_CMD		1
118 
119 /* current active device and partition number */
120 #ifdef CONFIG_CMD_MTDPARTS
121 /* Use the ones declared in cmd_mtdparts.c */
122 extern struct mtd_device *current_mtd_dev;
123 extern u8 current_mtd_partnum;
124 #else
125 /* Use local ones */
126 struct mtd_device *current_mtd_dev = NULL;
127 u8 current_mtd_partnum = 0;
128 #endif
129 
130 #if defined(CONFIG_CMD_CRAMFS)
131 extern int cramfs_check (struct part_info *info);
132 extern int cramfs_load (char *loadoffset, struct part_info *info, char *filename);
133 extern int cramfs_ls (struct part_info *info, char *filename);
134 extern int cramfs_info (struct part_info *info);
135 #else
136 /* defining empty macros for function names is ugly but avoids ifdef clutter
137  * all over the code */
138 #define cramfs_check(x)		(0)
139 #define cramfs_load(x,y,z)	(-1)
140 #define cramfs_ls(x,y)		(0)
141 #define cramfs_info(x)		(0)
142 #endif
143 
144 #ifndef CONFIG_CMD_MTDPARTS
145 /**
146  * Check device number to be within valid range for given device type.
147  *
148  * @param dev device to validate
149  * @return 0 if device is valid, 1 otherwise
150  */
151 static int mtd_device_validate(u8 type, u8 num, u32 *size)
152 {
153 	if (type == MTD_DEV_TYPE_NOR) {
154 #if defined(CONFIG_CMD_FLASH)
155 		if (num < CONFIG_SYS_MAX_FLASH_BANKS) {
156 			extern flash_info_t flash_info[];
157 			*size = flash_info[num].size;
158 
159 			return 0;
160 		}
161 
162 		printf("no such FLASH device: %s%d (valid range 0 ... %d\n",
163 				MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_FLASH_BANKS - 1);
164 #else
165 		printf("support for FLASH devices not present\n");
166 #endif
167 	} else if (type == MTD_DEV_TYPE_NAND) {
168 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
169 		if (num < CONFIG_SYS_MAX_NAND_DEVICE) {
170 			*size = nand_info[num]->size;
171 			return 0;
172 		}
173 
174 		printf("no such NAND device: %s%d (valid range 0 ... %d)\n",
175 				MTD_DEV_TYPE(type), num, CONFIG_SYS_MAX_NAND_DEVICE - 1);
176 #else
177 		printf("support for NAND devices not present\n");
178 #endif
179 	} else if (type == MTD_DEV_TYPE_ONENAND) {
180 #if defined(CONFIG_CMD_ONENAND)
181 		*size = onenand_mtd.size;
182 		return 0;
183 #else
184 		printf("support for OneNAND devices not present\n");
185 #endif
186 	} else
187 		printf("Unknown defice type %d\n", type);
188 
189 	return 1;
190 }
191 
192 /**
193  * Parse device id string <dev-id> := 'nand'|'nor'|'onenand'<dev-num>,
194  * return device type and number.
195  *
196  * @param id string describing device id
197  * @param ret_id output pointer to next char after parse completes (output)
198  * @param dev_type parsed device type (output)
199  * @param dev_num parsed device number (output)
200  * @return 0 on success, 1 otherwise
201  */
202 static int mtd_id_parse(const char *id, const char **ret_id, u8 *dev_type, u8 *dev_num)
203 {
204 	const char *p = id;
205 
206 	*dev_type = 0;
207 	if (strncmp(p, "nand", 4) == 0) {
208 		*dev_type = MTD_DEV_TYPE_NAND;
209 		p += 4;
210 	} else if (strncmp(p, "nor", 3) == 0) {
211 		*dev_type = MTD_DEV_TYPE_NOR;
212 		p += 3;
213 	} else if (strncmp(p, "onenand", 7) == 0) {
214 		*dev_type = MTD_DEV_TYPE_ONENAND;
215 		p += 7;
216 	} else {
217 		printf("incorrect device type in %s\n", id);
218 		return 1;
219 	}
220 
221 	if (!isdigit(*p)) {
222 		printf("incorrect device number in %s\n", id);
223 		return 1;
224 	}
225 
226 	*dev_num = simple_strtoul(p, (char **)&p, 0);
227 	if (ret_id)
228 		*ret_id = p;
229 	return 0;
230 }
231 
232 /*
233  * 'Static' version of command line mtdparts_init() routine. Single partition on
234  * a single device configuration.
235  */
236 
237 /**
238  * Calculate sector size.
239  *
240  * @return sector size
241  */
242 static inline u32 get_part_sector_size_nand(struct mtdids *id)
243 {
244 #if defined(CONFIG_JFFS2_NAND) && defined(CONFIG_CMD_NAND)
245 	struct mtd_info *mtd;
246 
247 	mtd = nand_info[id->num];
248 
249 	return mtd->erasesize;
250 #else
251 	BUG();
252 	return 0;
253 #endif
254 }
255 
256 static inline u32 get_part_sector_size_nor(struct mtdids *id, struct part_info *part)
257 {
258 #if defined(CONFIG_CMD_FLASH)
259 	extern flash_info_t flash_info[];
260 
261 	u32 end_phys, start_phys, sector_size = 0, size = 0;
262 	int i;
263 	flash_info_t *flash;
264 
265 	flash = &flash_info[id->num];
266 
267 	start_phys = flash->start[0] + part->offset;
268 	end_phys = start_phys + part->size - 1;
269 
270 	for (i = 0; i < flash->sector_count; i++) {
271 		if (flash->start[i] >= end_phys)
272 			break;
273 
274 		if (flash->start[i] >= start_phys) {
275 			if (i == flash->sector_count - 1) {
276 				size = flash->start[0] + flash->size - flash->start[i];
277 			} else {
278 				size = flash->start[i+1] - flash->start[i];
279 			}
280 
281 			if (sector_size < size)
282 				sector_size = size;
283 		}
284 	}
285 
286 	return sector_size;
287 #else
288 	BUG();
289 	return 0;
290 #endif
291 }
292 
293 static inline u32 get_part_sector_size_onenand(void)
294 {
295 #if defined(CONFIG_CMD_ONENAND)
296 	struct mtd_info *mtd;
297 
298 	mtd = &onenand_mtd;
299 
300 	return mtd->erasesize;
301 #else
302 	BUG();
303 	return 0;
304 #endif
305 }
306 
307 static inline u32 get_part_sector_size(struct mtdids *id, struct part_info *part)
308 {
309 	if (id->type == MTD_DEV_TYPE_NAND)
310 		return get_part_sector_size_nand(id);
311 	else if (id->type == MTD_DEV_TYPE_NOR)
312 		return get_part_sector_size_nor(id, part);
313 	else if (id->type == MTD_DEV_TYPE_ONENAND)
314 		return get_part_sector_size_onenand();
315 	else
316 		DEBUGF("Error: Unknown device type.\n");
317 
318 	return 0;
319 }
320 
321 /**
322  * Parse and initialize global mtdids mapping and create global
323  * device/partition list.
324  *
325  * 'Static' version of command line mtdparts_init() routine. Single partition on
326  * a single device configuration.
327  *
328  * @return 0 on success, 1 otherwise
329  */
330 int mtdparts_init(void)
331 {
332 	static int initialized = 0;
333 	u32 size;
334 	char *dev_name;
335 
336 	DEBUGF("\n---mtdparts_init---\n");
337 	if (!initialized) {
338 		struct mtdids *id;
339 		struct part_info *part;
340 
341 		initialized = 1;
342 		current_mtd_dev = (struct mtd_device *)
343 			malloc(sizeof(struct mtd_device) +
344 					sizeof(struct part_info) +
345 					sizeof(struct mtdids));
346 		if (!current_mtd_dev) {
347 			printf("out of memory\n");
348 			return 1;
349 		}
350 		memset(current_mtd_dev, 0, sizeof(struct mtd_device) +
351 		       sizeof(struct part_info) + sizeof(struct mtdids));
352 
353 		id = (struct mtdids *)(current_mtd_dev + 1);
354 		part = (struct part_info *)(id + 1);
355 
356 		/* id */
357 		id->mtd_id = "single part";
358 
359 #if defined(CONFIG_JFFS2_DEV)
360 		dev_name = CONFIG_JFFS2_DEV;
361 #else
362 		dev_name = "nor0";
363 #endif
364 
365 		if ((mtd_id_parse(dev_name, NULL, &id->type, &id->num) != 0) ||
366 				(mtd_device_validate(id->type, id->num, &size) != 0)) {
367 			printf("incorrect device: %s%d\n", MTD_DEV_TYPE(id->type), id->num);
368 			free(current_mtd_dev);
369 			return 1;
370 		}
371 		id->size = size;
372 		INIT_LIST_HEAD(&id->link);
373 
374 		DEBUGF("dev id: type = %d, num = %d, size = 0x%08lx, mtd_id = %s\n",
375 				id->type, id->num, id->size, id->mtd_id);
376 
377 		/* partition */
378 		part->name = "static";
379 		part->auto_name = 0;
380 
381 #if defined(CONFIG_JFFS2_PART_SIZE)
382 		part->size = CONFIG_JFFS2_PART_SIZE;
383 #else
384 		part->size = SIZE_REMAINING;
385 #endif
386 
387 #if defined(CONFIG_JFFS2_PART_OFFSET)
388 		part->offset = CONFIG_JFFS2_PART_OFFSET;
389 #else
390 		part->offset = 0x00000000;
391 #endif
392 
393 		part->dev = current_mtd_dev;
394 		INIT_LIST_HEAD(&part->link);
395 
396 		/* recalculate size if needed */
397 		if (part->size == SIZE_REMAINING)
398 			part->size = id->size - part->offset;
399 
400 		part->sector_size = get_part_sector_size(id, part);
401 
402 		DEBUGF("part  : name = %s, size = 0x%08lx, offset = 0x%08lx\n",
403 				part->name, part->size, part->offset);
404 
405 		/* device */
406 		current_mtd_dev->id = id;
407 		INIT_LIST_HEAD(&current_mtd_dev->link);
408 		current_mtd_dev->num_parts = 1;
409 		INIT_LIST_HEAD(&current_mtd_dev->parts);
410 		list_add(&part->link, &current_mtd_dev->parts);
411 	}
412 
413 	return 0;
414 }
415 #endif /* #ifndef CONFIG_CMD_MTDPARTS */
416 
417 /**
418  * Return pointer to the partition of a requested number from a requested
419  * device.
420  *
421  * @param dev device that is to be searched for a partition
422  * @param part_num requested partition number
423  * @return pointer to the part_info, NULL otherwise
424  */
425 static struct part_info* jffs2_part_info(struct mtd_device *dev, unsigned int part_num)
426 {
427 	struct list_head *entry;
428 	struct part_info *part;
429 	int num;
430 
431 	if (!dev)
432 		return NULL;
433 
434 	DEBUGF("\n--- jffs2_part_info: partition number %d for device %s%d (%s)\n",
435 			part_num, MTD_DEV_TYPE(dev->id->type),
436 			dev->id->num, dev->id->mtd_id);
437 
438 	if (part_num >= dev->num_parts) {
439 		printf("invalid partition number %d for device %s%d (%s)\n",
440 				part_num, MTD_DEV_TYPE(dev->id->type),
441 				dev->id->num, dev->id->mtd_id);
442 		return NULL;
443 	}
444 
445 	/* locate partition number, return it */
446 	num = 0;
447 	list_for_each(entry, &dev->parts) {
448 		part = list_entry(entry, struct part_info, link);
449 
450 		if (part_num == num++) {
451 			return part;
452 		}
453 	}
454 
455 	return NULL;
456 }
457 
458 /***************************************************/
459 /* U-Boot commands				   */
460 /***************************************************/
461 
462 /**
463  * Routine implementing fsload u-boot command. This routine tries to load
464  * a requested file from jffs2/cramfs filesystem on a current partition.
465  *
466  * @param cmdtp command internal data
467  * @param flag command flag
468  * @param argc number of arguments supplied to the command
469  * @param argv arguments list
470  * @return 0 on success, 1 otherwise
471  */
472 int do_jffs2_fsload(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
473 {
474 	char *fsname;
475 	char *filename;
476 	int size;
477 	struct part_info *part;
478 	ulong offset = load_addr;
479 
480 	/* pre-set Boot file name */
481 	if ((filename = getenv("bootfile")) == NULL) {
482 		filename = "uImage";
483 	}
484 
485 	if (argc == 2) {
486 		filename = argv[1];
487 	}
488 	if (argc == 3) {
489 		offset = simple_strtoul(argv[1], NULL, 16);
490 		load_addr = offset;
491 		filename = argv[2];
492 	}
493 
494 	/* make sure we are in sync with env variables */
495 	if (mtdparts_init() !=0)
496 		return 1;
497 
498 	if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
499 
500 		/* check partition type for cramfs */
501 		fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
502 		printf("### %s loading '%s' to 0x%lx\n", fsname, filename, offset);
503 
504 		if (cramfs_check(part)) {
505 			size = cramfs_load ((char *) offset, part, filename);
506 		} else {
507 			/* if this is not cramfs assume jffs2 */
508 			size = jffs2_1pass_load((char *)offset, part, filename);
509 		}
510 
511 		if (size > 0) {
512 			printf("### %s load complete: %d bytes loaded to 0x%lx\n",
513 				fsname, size, offset);
514 			setenv_hex("filesize", size);
515 		} else {
516 			printf("### %s LOAD ERROR<%x> for %s!\n", fsname, size, filename);
517 		}
518 
519 		return !(size > 0);
520 	}
521 	return 1;
522 }
523 
524 /**
525  * Routine implementing u-boot ls command which lists content of a given
526  * directory on a current partition.
527  *
528  * @param cmdtp command internal data
529  * @param flag command flag
530  * @param argc number of arguments supplied to the command
531  * @param argv arguments list
532  * @return 0 on success, 1 otherwise
533  */
534 int do_jffs2_ls(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
535 {
536 	char *filename = "/";
537 	int ret;
538 	struct part_info *part;
539 
540 	if (argc == 2)
541 		filename = argv[1];
542 
543 	/* make sure we are in sync with env variables */
544 	if (mtdparts_init() !=0)
545 		return 1;
546 
547 	if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
548 
549 		/* check partition type for cramfs */
550 		if (cramfs_check(part)) {
551 			ret = cramfs_ls (part, filename);
552 		} else {
553 			/* if this is not cramfs assume jffs2 */
554 			ret = jffs2_1pass_ls(part, filename);
555 		}
556 
557 		return ret ? 0 : 1;
558 	}
559 	return 1;
560 }
561 
562 /**
563  * Routine implementing u-boot fsinfo command. This routine prints out
564  * miscellaneous filesystem informations/statistics.
565  *
566  * @param cmdtp command internal data
567  * @param flag command flag
568  * @param argc number of arguments supplied to the command
569  * @param argv arguments list
570  * @return 0 on success, 1 otherwise
571  */
572 int do_jffs2_fsinfo(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
573 {
574 	struct part_info *part;
575 	char *fsname;
576 	int ret;
577 
578 	/* make sure we are in sync with env variables */
579 	if (mtdparts_init() !=0)
580 		return 1;
581 
582 	if ((part = jffs2_part_info(current_mtd_dev, current_mtd_partnum))){
583 
584 		/* check partition type for cramfs */
585 		fsname = (cramfs_check(part) ? "CRAMFS" : "JFFS2");
586 		printf("### filesystem type is %s\n", fsname);
587 
588 		if (cramfs_check(part)) {
589 			ret = cramfs_info (part);
590 		} else {
591 			/* if this is not cramfs assume jffs2 */
592 			ret = jffs2_1pass_info(part);
593 		}
594 
595 		return ret ? 0 : 1;
596 	}
597 	return 1;
598 }
599 
600 /***************************************************/
601 U_BOOT_CMD(
602 	fsload,	3,	0,	do_jffs2_fsload,
603 	"load binary file from a filesystem image",
604 	"[ off ] [ filename ]\n"
605 	"    - load binary file from flash bank\n"
606 	"      with offset 'off'"
607 );
608 U_BOOT_CMD(
609 	fsls,	2,	1,	do_jffs2_ls,
610 	"list files in a directory (default /)",
611 	"[ directory ]"
612 );
613 
614 U_BOOT_CMD(
615 	fsinfo,	1,	1,	do_jffs2_fsinfo,
616 	"print information about filesystems",
617 	""
618 );
619 /***************************************************/
620