1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3 * Copyright © 1999-2010 David Woodhouse <dwmw2@infradead.org> et al.
4 *
5 */
6
7 #ifndef __MTD_MTD_H__
8 #define __MTD_MTD_H__
9
10 #ifndef __UBOOT__
11 #include <linux/types.h>
12 #include <linux/uio.h>
13 #include <linux/notifier.h>
14 #include <linux/device.h>
15
16 #include <mtd/mtd-abi.h>
17
18 #include <asm/div64.h>
19 #else
20 #include <linux/compat.h>
21 #include <mtd/mtd-abi.h>
22 #include <linux/errno.h>
23 #include <linux/list.h>
24 #include <div64.h>
25 #if IS_ENABLED(CONFIG_DM)
26 #include <dm/device.h>
27 #endif
28
29 #define MAX_MTD_DEVICES 32
30 #endif
31
32 #define MTD_ERASE_PENDING 0x01
33 #define MTD_ERASING 0x02
34 #define MTD_ERASE_SUSPEND 0x04
35 #define MTD_ERASE_DONE 0x08
36 #define MTD_ERASE_FAILED 0x10
37
38 #define MTD_FAIL_ADDR_UNKNOWN -1LL
39
40 /*
41 * If the erase fails, fail_addr might indicate exactly which block failed. If
42 * fail_addr = MTD_FAIL_ADDR_UNKNOWN, the failure was not at the device level
43 * or was not specific to any particular block.
44 */
45 struct erase_info {
46 struct mtd_info *mtd;
47 uint64_t addr;
48 uint64_t len;
49 uint64_t fail_addr;
50 u_long time;
51 u_long retries;
52 unsigned dev;
53 unsigned cell;
54 void (*callback) (struct erase_info *self);
55 u_long priv;
56 u_char state;
57 struct erase_info *next;
58 int scrub;
59 };
60
61 struct mtd_erase_region_info {
62 uint64_t offset; /* At which this region starts, from the beginning of the MTD */
63 uint32_t erasesize; /* For this region */
64 uint32_t numblocks; /* Number of blocks of erasesize in this region */
65 unsigned long *lockmap; /* If keeping bitmap of locks */
66 };
67
68 /**
69 * struct mtd_oob_ops - oob operation operands
70 * @mode: operation mode
71 *
72 * @len: number of data bytes to write/read
73 *
74 * @retlen: number of data bytes written/read
75 *
76 * @ooblen: number of oob bytes to write/read
77 * @oobretlen: number of oob bytes written/read
78 * @ooboffs: offset of oob data in the oob area (only relevant when
79 * mode = MTD_OPS_PLACE_OOB or MTD_OPS_RAW)
80 * @datbuf: data buffer - if NULL only oob data are read/written
81 * @oobbuf: oob data buffer
82 */
83 struct mtd_oob_ops {
84 unsigned int mode;
85 size_t len;
86 size_t retlen;
87 size_t ooblen;
88 size_t oobretlen;
89 uint32_t ooboffs;
90 uint8_t *datbuf;
91 uint8_t *oobbuf;
92 };
93
94 #ifdef CONFIG_SYS_NAND_MAX_OOBFREE
95 #define MTD_MAX_OOBFREE_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_OOBFREE
96 #else
97 #define MTD_MAX_OOBFREE_ENTRIES_LARGE 32
98 #endif
99
100 #ifdef CONFIG_SYS_NAND_MAX_ECCPOS
101 #define MTD_MAX_ECCPOS_ENTRIES_LARGE CONFIG_SYS_NAND_MAX_ECCPOS
102 #else
103 #define MTD_MAX_ECCPOS_ENTRIES_LARGE 680
104 #endif
105 /**
106 * struct mtd_oob_region - oob region definition
107 * @offset: region offset
108 * @length: region length
109 *
110 * This structure describes a region of the OOB area, and is used
111 * to retrieve ECC or free bytes sections.
112 * Each section is defined by an offset within the OOB area and a
113 * length.
114 */
115 struct mtd_oob_region {
116 u32 offset;
117 u32 length;
118 };
119
120 /*
121 * struct mtd_ooblayout_ops - NAND OOB layout operations
122 * @ecc: function returning an ECC region in the OOB area.
123 * Should return -ERANGE if %section exceeds the total number of
124 * ECC sections.
125 * @free: function returning a free region in the OOB area.
126 * Should return -ERANGE if %section exceeds the total number of
127 * free sections.
128 */
129 struct mtd_ooblayout_ops {
130 int (*ecc)(struct mtd_info *mtd, int section,
131 struct mtd_oob_region *oobecc);
132 int (*free)(struct mtd_info *mtd, int section,
133 struct mtd_oob_region *oobfree);
134 };
135
136 /*
137 * Internal ECC layout control structure. For historical reasons, there is a
138 * similar, smaller struct nand_ecclayout_user (in mtd-abi.h) that is retained
139 * for export to user-space via the ECCGETLAYOUT ioctl.
140 * nand_ecclayout should be expandable in the future simply by the above macros.
141 */
142 struct nand_ecclayout {
143 __u32 eccbytes;
144 __u32 eccpos[MTD_MAX_ECCPOS_ENTRIES_LARGE];
145 __u32 oobavail;
146 struct nand_oobfree oobfree[MTD_MAX_OOBFREE_ENTRIES_LARGE];
147 };
148
149 struct module; /* only needed for owner field in mtd_info */
150
151 struct mtd_info {
152 u_char type;
153 uint32_t flags;
154 uint64_t size; // Total size of the MTD
155
156 /* "Major" erase size for the device. Naïve users may take this
157 * to be the only erase size available, or may use the more detailed
158 * information below if they desire
159 */
160 uint32_t erasesize;
161 /* Minimal writable flash unit size. In case of NOR flash it is 1 (even
162 * though individual bits can be cleared), in case of NAND flash it is
163 * one NAND page (or half, or one-fourths of it), in case of ECC-ed NOR
164 * it is of ECC block size, etc. It is illegal to have writesize = 0.
165 * Any driver registering a struct mtd_info must ensure a writesize of
166 * 1 or larger.
167 */
168 uint32_t writesize;
169
170 /*
171 * Size of the write buffer used by the MTD. MTD devices having a write
172 * buffer can write multiple writesize chunks at a time. E.g. while
173 * writing 4 * writesize bytes to a device with 2 * writesize bytes
174 * buffer the MTD driver can (but doesn't have to) do 2 writesize
175 * operations, but not 4. Currently, all NANDs have writebufsize
176 * equivalent to writesize (NAND page size). Some NOR flashes do have
177 * writebufsize greater than writesize.
178 */
179 uint32_t writebufsize;
180
181 uint32_t oobsize; // Amount of OOB data per block (e.g. 16)
182 uint32_t oobavail; // Available OOB bytes per block
183
184 /*
185 * If erasesize is a power of 2 then the shift is stored in
186 * erasesize_shift otherwise erasesize_shift is zero. Ditto writesize.
187 */
188 unsigned int erasesize_shift;
189 unsigned int writesize_shift;
190 /* Masks based on erasesize_shift and writesize_shift */
191 unsigned int erasesize_mask;
192 unsigned int writesize_mask;
193
194 /*
195 * read ops return -EUCLEAN if max number of bitflips corrected on any
196 * one region comprising an ecc step equals or exceeds this value.
197 * Settable by driver, else defaults to ecc_strength. User can override
198 * in sysfs. N.B. The meaning of the -EUCLEAN return code has changed;
199 * see Documentation/ABI/testing/sysfs-class-mtd for more detail.
200 */
201 unsigned int bitflip_threshold;
202
203 // Kernel-only stuff starts here.
204 #ifndef __UBOOT__
205 const char *name;
206 #else
207 char *name;
208 #endif
209 int index;
210
211 /* OOB layout description */
212 const struct mtd_ooblayout_ops *ooblayout;
213
214 /* ECC layout structure pointer - read only! */
215 struct nand_ecclayout *ecclayout;
216
217 /* the ecc step size. */
218 unsigned int ecc_step_size;
219
220 /* max number of correctible bit errors per ecc step */
221 unsigned int ecc_strength;
222
223 /* Data for variable erase regions. If numeraseregions is zero,
224 * it means that the whole device has erasesize as given above.
225 */
226 int numeraseregions;
227 struct mtd_erase_region_info *eraseregions;
228
229 /*
230 * Do not call via these pointers, use corresponding mtd_*()
231 * wrappers instead.
232 */
233 int (*_erase) (struct mtd_info *mtd, struct erase_info *instr);
234 #ifndef __UBOOT__
235 int (*_point) (struct mtd_info *mtd, loff_t from, size_t len,
236 size_t *retlen, void **virt, resource_size_t *phys);
237 int (*_unpoint) (struct mtd_info *mtd, loff_t from, size_t len);
238 #endif
239 unsigned long (*_get_unmapped_area) (struct mtd_info *mtd,
240 unsigned long len,
241 unsigned long offset,
242 unsigned long flags);
243 int (*_read) (struct mtd_info *mtd, loff_t from, size_t len,
244 size_t *retlen, u_char *buf);
245 int (*_write) (struct mtd_info *mtd, loff_t to, size_t len,
246 size_t *retlen, const u_char *buf);
247 int (*_panic_write) (struct mtd_info *mtd, loff_t to, size_t len,
248 size_t *retlen, const u_char *buf);
249 int (*_read_oob) (struct mtd_info *mtd, loff_t from,
250 struct mtd_oob_ops *ops);
251 int (*_write_oob) (struct mtd_info *mtd, loff_t to,
252 struct mtd_oob_ops *ops);
253 int (*_get_fact_prot_info) (struct mtd_info *mtd, size_t len,
254 size_t *retlen, struct otp_info *buf);
255 int (*_read_fact_prot_reg) (struct mtd_info *mtd, loff_t from,
256 size_t len, size_t *retlen, u_char *buf);
257 int (*_get_user_prot_info) (struct mtd_info *mtd, size_t len,
258 size_t *retlen, struct otp_info *buf);
259 int (*_read_user_prot_reg) (struct mtd_info *mtd, loff_t from,
260 size_t len, size_t *retlen, u_char *buf);
261 int (*_write_user_prot_reg) (struct mtd_info *mtd, loff_t to,
262 size_t len, size_t *retlen, u_char *buf);
263 int (*_lock_user_prot_reg) (struct mtd_info *mtd, loff_t from,
264 size_t len);
265 #ifndef __UBOOT__
266 int (*_writev) (struct mtd_info *mtd, const struct kvec *vecs,
267 unsigned long count, loff_t to, size_t *retlen);
268 #endif
269 void (*_sync) (struct mtd_info *mtd);
270 int (*_lock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
271 int (*_unlock) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
272 int (*_is_locked) (struct mtd_info *mtd, loff_t ofs, uint64_t len);
273 int (*_block_isreserved) (struct mtd_info *mtd, loff_t ofs);
274 int (*_block_isbad) (struct mtd_info *mtd, loff_t ofs);
275 int (*_block_markbad) (struct mtd_info *mtd, loff_t ofs);
276 #ifndef __UBOOT__
277 int (*_suspend) (struct mtd_info *mtd);
278 void (*_resume) (struct mtd_info *mtd);
279 void (*_reboot) (struct mtd_info *mtd);
280 #endif
281 /*
282 * If the driver is something smart, like UBI, it may need to maintain
283 * its own reference counting. The below functions are only for driver.
284 */
285 int (*_get_device) (struct mtd_info *mtd);
286 void (*_put_device) (struct mtd_info *mtd);
287
288 #ifndef __UBOOT__
289 /* Backing device capabilities for this device
290 * - provides mmap capabilities
291 */
292 struct backing_dev_info *backing_dev_info;
293
294 struct notifier_block reboot_notifier; /* default mode before reboot */
295 #endif
296
297 /* ECC status information */
298 struct mtd_ecc_stats ecc_stats;
299 /* Subpage shift (NAND) */
300 int subpage_sft;
301
302 void *priv;
303
304 struct module *owner;
305 #ifndef __UBOOT__
306 struct device dev;
307 #else
308 struct udevice *dev;
309 #endif
310 int usecount;
311
312 /* MTD devices do not have any parent. MTD partitions do. */
313 struct mtd_info *parent;
314
315 /*
316 * Offset of the partition relatively to the parent offset.
317 * Is 0 for real MTD devices (ie. not partitions).
318 */
319 u64 offset;
320
321 /*
322 * List node used to add an MTD partition to the parent
323 * partition list.
324 */
325 struct list_head node;
326
327 /*
328 * List of partitions attached to this MTD device (the parent
329 * MTD device can itself be a partition).
330 */
331 struct list_head partitions;
332 };
333
334 #if IS_ENABLED(CONFIG_DM)
mtd_set_of_node(struct mtd_info * mtd,const struct device_node * np)335 static inline void mtd_set_of_node(struct mtd_info *mtd,
336 const struct device_node *np)
337 {
338 mtd->dev->node.np = np;
339 }
340
mtd_get_of_node(struct mtd_info * mtd)341 static inline const struct device_node *mtd_get_of_node(struct mtd_info *mtd)
342 {
343 return mtd->dev->node.np;
344 }
345 #else
346 struct device_node;
347
mtd_set_of_node(struct mtd_info * mtd,const struct device_node * np)348 static inline void mtd_set_of_node(struct mtd_info *mtd,
349 const struct device_node *np)
350 {
351 }
352
mtd_get_of_node(struct mtd_info * mtd)353 static inline const struct device_node *mtd_get_of_node(struct mtd_info *mtd)
354 {
355 return NULL;
356 }
357 #endif
358
mtd_is_partition(const struct mtd_info * mtd)359 static inline bool mtd_is_partition(const struct mtd_info *mtd)
360 {
361 return mtd->parent;
362 }
363
mtd_has_partitions(const struct mtd_info * mtd)364 static inline bool mtd_has_partitions(const struct mtd_info *mtd)
365 {
366 return !list_empty(&mtd->partitions);
367 }
368
369 bool mtd_partitions_used(struct mtd_info *master);
370
371 int mtd_ooblayout_ecc(struct mtd_info *mtd, int section,
372 struct mtd_oob_region *oobecc);
373 int mtd_ooblayout_find_eccregion(struct mtd_info *mtd, int eccbyte,
374 int *section,
375 struct mtd_oob_region *oobregion);
376 int mtd_ooblayout_get_eccbytes(struct mtd_info *mtd, u8 *eccbuf,
377 const u8 *oobbuf, int start, int nbytes);
378 int mtd_ooblayout_set_eccbytes(struct mtd_info *mtd, const u8 *eccbuf,
379 u8 *oobbuf, int start, int nbytes);
380 int mtd_ooblayout_free(struct mtd_info *mtd, int section,
381 struct mtd_oob_region *oobfree);
382 int mtd_ooblayout_get_databytes(struct mtd_info *mtd, u8 *databuf,
383 const u8 *oobbuf, int start, int nbytes);
384 int mtd_ooblayout_set_databytes(struct mtd_info *mtd, const u8 *databuf,
385 u8 *oobbuf, int start, int nbytes);
386 int mtd_ooblayout_count_freebytes(struct mtd_info *mtd);
387 int mtd_ooblayout_count_eccbytes(struct mtd_info *mtd);
388
mtd_set_ooblayout(struct mtd_info * mtd,const struct mtd_ooblayout_ops * ooblayout)389 static inline void mtd_set_ooblayout(struct mtd_info *mtd,
390 const struct mtd_ooblayout_ops *ooblayout)
391 {
392 mtd->ooblayout = ooblayout;
393 }
394
mtd_oobavail(struct mtd_info * mtd,struct mtd_oob_ops * ops)395 static inline int mtd_oobavail(struct mtd_info *mtd, struct mtd_oob_ops *ops)
396 {
397 return ops->mode == MTD_OPS_AUTO_OOB ? mtd->oobavail : mtd->oobsize;
398 }
399
400 int mtd_erase(struct mtd_info *mtd, struct erase_info *instr);
401 #ifndef __UBOOT__
402 int mtd_point(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
403 void **virt, resource_size_t *phys);
404 int mtd_unpoint(struct mtd_info *mtd, loff_t from, size_t len);
405 #endif
406 unsigned long mtd_get_unmapped_area(struct mtd_info *mtd, unsigned long len,
407 unsigned long offset, unsigned long flags);
408 int mtd_read(struct mtd_info *mtd, loff_t from, size_t len, size_t *retlen,
409 u_char *buf);
410 int mtd_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
411 const u_char *buf);
412 int mtd_panic_write(struct mtd_info *mtd, loff_t to, size_t len, size_t *retlen,
413 const u_char *buf);
414
415 int mtd_read_oob(struct mtd_info *mtd, loff_t from, struct mtd_oob_ops *ops);
416 int mtd_write_oob(struct mtd_info *mtd, loff_t to, struct mtd_oob_ops *ops);
417
418 int mtd_get_fact_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,
419 struct otp_info *buf);
420 int mtd_read_fact_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
421 size_t *retlen, u_char *buf);
422 int mtd_get_user_prot_info(struct mtd_info *mtd, size_t len, size_t *retlen,
423 struct otp_info *buf);
424 int mtd_read_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len,
425 size_t *retlen, u_char *buf);
426 int mtd_write_user_prot_reg(struct mtd_info *mtd, loff_t to, size_t len,
427 size_t *retlen, u_char *buf);
428 int mtd_lock_user_prot_reg(struct mtd_info *mtd, loff_t from, size_t len);
429
430 #ifndef __UBOOT__
431 int mtd_writev(struct mtd_info *mtd, const struct kvec *vecs,
432 unsigned long count, loff_t to, size_t *retlen);
433 #endif
434
mtd_sync(struct mtd_info * mtd)435 static inline void mtd_sync(struct mtd_info *mtd)
436 {
437 if (mtd->_sync)
438 mtd->_sync(mtd);
439 }
440
441 int mtd_lock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
442 int mtd_unlock(struct mtd_info *mtd, loff_t ofs, uint64_t len);
443 int mtd_is_locked(struct mtd_info *mtd, loff_t ofs, uint64_t len);
444 int mtd_block_isreserved(struct mtd_info *mtd, loff_t ofs);
445 int mtd_block_isbad(struct mtd_info *mtd, loff_t ofs);
446 int mtd_block_markbad(struct mtd_info *mtd, loff_t ofs);
447
448 #ifndef __UBOOT__
mtd_suspend(struct mtd_info * mtd)449 static inline int mtd_suspend(struct mtd_info *mtd)
450 {
451 return mtd->_suspend ? mtd->_suspend(mtd) : 0;
452 }
453
mtd_resume(struct mtd_info * mtd)454 static inline void mtd_resume(struct mtd_info *mtd)
455 {
456 if (mtd->_resume)
457 mtd->_resume(mtd);
458 }
459 #endif
460
mtd_div_by_eb(uint64_t sz,struct mtd_info * mtd)461 static inline uint32_t mtd_div_by_eb(uint64_t sz, struct mtd_info *mtd)
462 {
463 if (mtd->erasesize_shift)
464 return sz >> mtd->erasesize_shift;
465 do_div(sz, mtd->erasesize);
466 return sz;
467 }
468
mtd_mod_by_eb(uint64_t sz,struct mtd_info * mtd)469 static inline uint32_t mtd_mod_by_eb(uint64_t sz, struct mtd_info *mtd)
470 {
471 if (mtd->erasesize_shift)
472 return sz & mtd->erasesize_mask;
473 return do_div(sz, mtd->erasesize);
474 }
475
mtd_div_by_ws(uint64_t sz,struct mtd_info * mtd)476 static inline uint32_t mtd_div_by_ws(uint64_t sz, struct mtd_info *mtd)
477 {
478 if (mtd->writesize_shift)
479 return sz >> mtd->writesize_shift;
480 do_div(sz, mtd->writesize);
481 return sz;
482 }
483
mtd_mod_by_ws(uint64_t sz,struct mtd_info * mtd)484 static inline uint32_t mtd_mod_by_ws(uint64_t sz, struct mtd_info *mtd)
485 {
486 if (mtd->writesize_shift)
487 return sz & mtd->writesize_mask;
488 return do_div(sz, mtd->writesize);
489 }
490
mtd_has_oob(const struct mtd_info * mtd)491 static inline int mtd_has_oob(const struct mtd_info *mtd)
492 {
493 return mtd->_read_oob && mtd->_write_oob;
494 }
495
mtd_type_is_nand(const struct mtd_info * mtd)496 static inline int mtd_type_is_nand(const struct mtd_info *mtd)
497 {
498 return mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH;
499 }
500
mtd_can_have_bb(const struct mtd_info * mtd)501 static inline int mtd_can_have_bb(const struct mtd_info *mtd)
502 {
503 return !!mtd->_block_isbad;
504 }
505
506 /* Kernel-side ioctl definitions */
507
508 struct mtd_partition;
509 struct mtd_part_parser_data;
510
511 extern int mtd_device_parse_register(struct mtd_info *mtd,
512 const char * const *part_probe_types,
513 struct mtd_part_parser_data *parser_data,
514 const struct mtd_partition *defparts,
515 int defnr_parts);
516 #define mtd_device_register(master, parts, nr_parts) \
517 mtd_device_parse_register(master, NULL, NULL, parts, nr_parts)
518 extern int mtd_device_unregister(struct mtd_info *master);
519 extern struct mtd_info *get_mtd_device(struct mtd_info *mtd, int num);
520 extern int __get_mtd_device(struct mtd_info *mtd);
521 extern void __put_mtd_device(struct mtd_info *mtd);
522 extern struct mtd_info *get_mtd_device_nm(const char *name);
523 extern void put_mtd_device(struct mtd_info *mtd);
524
525
526 #ifndef __UBOOT__
527 struct mtd_notifier {
528 void (*add)(struct mtd_info *mtd);
529 void (*remove)(struct mtd_info *mtd);
530 struct list_head list;
531 };
532
533
534 extern void register_mtd_user (struct mtd_notifier *new);
535 extern int unregister_mtd_user (struct mtd_notifier *old);
536 #endif
537 void *mtd_kmalloc_up_to(const struct mtd_info *mtd, size_t *size);
538
539 #ifdef CONFIG_MTD_PARTITIONS
540 void mtd_erase_callback(struct erase_info *instr);
541 #else
mtd_erase_callback(struct erase_info * instr)542 static inline void mtd_erase_callback(struct erase_info *instr)
543 {
544 if (instr->callback)
545 instr->callback(instr);
546 }
547 #endif
548
mtd_is_bitflip(int err)549 static inline int mtd_is_bitflip(int err) {
550 return err == -EUCLEAN;
551 }
552
mtd_is_eccerr(int err)553 static inline int mtd_is_eccerr(int err) {
554 return err == -EBADMSG;
555 }
556
mtd_is_bitflip_or_eccerr(int err)557 static inline int mtd_is_bitflip_or_eccerr(int err) {
558 return mtd_is_bitflip(err) || mtd_is_eccerr(err);
559 }
560
561 unsigned mtd_mmap_capabilities(struct mtd_info *mtd);
562
563 #ifdef __UBOOT__
564 /* drivers/mtd/mtdcore.h */
565 int add_mtd_device(struct mtd_info *mtd);
566 int del_mtd_device(struct mtd_info *mtd);
567
568 #ifdef CONFIG_MTD_PARTITIONS
569 int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
570 int del_mtd_partitions(struct mtd_info *);
571 #else
add_mtd_partitions(struct mtd_info * mtd,const struct mtd_partition * parts,int nparts)572 static inline int add_mtd_partitions(struct mtd_info *mtd,
573 const struct mtd_partition *parts,
574 int nparts)
575 {
576 return 0;
577 }
578
del_mtd_partitions(struct mtd_info * mtd)579 static inline int del_mtd_partitions(struct mtd_info *mtd)
580 {
581 return 0;
582 }
583 #endif
584
585 struct mtd_info *__mtd_next_device(int i);
586 #define mtd_for_each_device(mtd) \
587 for ((mtd) = __mtd_next_device(0); \
588 (mtd) != NULL; \
589 (mtd) = __mtd_next_device(mtd->index + 1))
590
591 int mtd_arg_off(const char *arg, int *idx, loff_t *off, loff_t *size,
592 loff_t *maxsize, int devtype, uint64_t chipsize);
593 int mtd_arg_off_size(int argc, char *const argv[], int *idx, loff_t *off,
594 loff_t *size, loff_t *maxsize, int devtype,
595 uint64_t chipsize);
596
597 /* drivers/mtd/mtdcore.c */
598 void mtd_get_len_incl_bad(struct mtd_info *mtd, uint64_t offset,
599 const uint64_t length, uint64_t *len_incl_bad,
600 int *truncated);
601 bool mtd_dev_list_updated(void);
602
603 /* drivers/mtd/mtd_uboot.c */
604 int mtd_search_alternate_name(const char *mtdname, char *altname,
605 unsigned int max_len);
606
607 #endif
608 #endif /* __MTD_MTD_H__ */
609