22 	struct mtd_info *mtd;  in get_mtd_by_name()  local
26 	mtd = get_mtd_device_nm(name);  in get_mtd_by_name()
27 	if (IS_ERR_OR_NULL(mtd))  in get_mtd_by_name()
29 		       PTR_ERR(mtd));  in get_mtd_by_name()
31 	return mtd;  in get_mtd_by_name()
34 static uint mtd_len_to_pages(struct mtd_info *mtd, u64 len)  in mtd_len_to_pages()  argument
36 	do_div(len, mtd->writesize);  in mtd_len_to_pages()
41 static bool mtd_is_aligned_with_min_io_size(struct mtd_info *mtd, u64 size)  in mtd_is_aligned_with_min_io_size()  argument
43 	return !do_div(size, mtd->writesize);  in mtd_is_aligned_with_min_io_size()
46 static bool mtd_is_aligned_with_block_size(struct mtd_info *mtd, u64 size)  in mtd_is_aligned_with_block_size()  argument
48 	return !do_div(size, mtd->erasesize);  in mtd_is_aligned_with_block_size()
68 static void mtd_dump_device_buf(struct mtd_info *mtd, u64 start_off,  in mtd_dump_device_buf()  argument
71 	bool has_pages = mtd->type == MTD_NANDFLASH ||  in mtd_dump_device_buf()
72 		mtd->type == MTD_MLCNANDFLASH;  in mtd_dump_device_buf()
73 	int npages = mtd_len_to_pages(mtd, len);  in mtd_dump_device_buf()
78 			u64 data_off = page * mtd->writesize;  in mtd_dump_device_buf()
81 			       mtd->writesize, start_off + data_off);  in mtd_dump_device_buf()
83 				     mtd->writesize, start_off + data_off);  in mtd_dump_device_buf()
86 				u64 oob_off = page * mtd->oobsize;  in mtd_dump_device_buf()
89 				       mtd->oobsize, start_off + data_off);  in mtd_dump_device_buf()
91 					     mtd->oobsize, 0);  in mtd_dump_device_buf()
101 static void mtd_show_parts(struct mtd_info *mtd, int level)  in mtd_show_parts()  argument
106 	list_for_each_entry(part, &mtd->partitions, node) {  in mtd_show_parts()
116 static void mtd_show_device(struct mtd_info *mtd)  in mtd_show_device()  argument
119 	printf("* %s\n", mtd->name);  in mtd_show_device()
121 	if (mtd->dev) {  in mtd_show_device()
122 		printf("  - device: %s\n", mtd->dev->name);  in mtd_show_device()
123 		printf("  - parent: %s\n", mtd->dev->parent->name);  in mtd_show_device()
124 		printf("  - driver: %s\n", mtd->dev->driver->name);  in mtd_show_device()
130 	switch (mtd->type) {  in mtd_show_device()
158 	printf("  - block size: 0x%x bytes\n", mtd->erasesize);  in mtd_show_device()
159 	printf("  - min I/O: 0x%x bytes\n", mtd->writesize);  in mtd_show_device()
161 	if (mtd->oobsize) {  in mtd_show_device()
162 		printf("  - OOB size: %u bytes\n", mtd->oobsize);  in mtd_show_device()
163 		printf("  - OOB available: %u bytes\n", mtd->oobavail);  in mtd_show_device()
166 	if (mtd->ecc_strength) {  in mtd_show_device()
167 		printf("  - ECC strength: %u bits\n", mtd->ecc_strength);  in mtd_show_device()
168 		printf("  - ECC step size: %u bytes\n", mtd->ecc_step_size);  in mtd_show_device()
170 		       mtd->bitflip_threshold);  in mtd_show_device()
174 	       mtd->offset, mtd->offset + mtd->size, mtd->name);  in mtd_show_device()
177 	mtd_show_parts(mtd, 1);  in mtd_show_device()
199 	struct mtd_info *mtd;  in do_mtd_list()  local
206 	mtd_for_each_device(mtd) {  in do_mtd_list()
207 		if (!mtd_is_partition(mtd))  in do_mtd_list()
208 			mtd_show_device(mtd);  in do_mtd_list()
221 static int mtd_special_write_oob(struct mtd_info *mtd, u64 off,  in mtd_special_write_oob()  argument
232 		io_op->retlen = mtd->writesize;  in mtd_special_write_oob()
233 		io_op->oobretlen = woob ? mtd->oobsize : 0;  in mtd_special_write_oob()
235 		ret = mtd_write_oob(mtd, off, io_op);  in mtd_special_write_oob()
248 	struct mtd_info *mtd;  in do_mtd_io()  local
256 	mtd = get_mtd_by_name(argv[1]);  in do_mtd_io()
257 	if (IS_ERR_OR_NULL(mtd))  in do_mtd_io()
260 	if (mtd->type == MTD_NANDFLASH || mtd->type == MTD_MLCNANDFLASH)  in do_mtd_io()
284 	if (!mtd_is_aligned_with_min_io_size(mtd, start_off)) {  in do_mtd_io()
286 		       mtd->writesize);  in do_mtd_io()
291 	default_len = dump ? mtd->writesize : mtd->size;  in do_mtd_io()
293 	if (!mtd_is_aligned_with_min_io_size(mtd, len)) {  in do_mtd_io()
294 		len = round_up(len, mtd->writesize);  in do_mtd_io()
296 		       mtd->writesize, len);  in do_mtd_io()
300 	npages = mtd_len_to_pages(mtd, len);  in do_mtd_io()
301 	oob_len = woob ? npages * mtd->oobsize : 0;  in do_mtd_io()
324 	io_op.len = has_pages ? mtd->writesize : len;  in do_mtd_io()
325 	io_op.ooblen = woob ? mtd->oobsize : 0;  in do_mtd_io()
331 	while (mtd_block_isbad(mtd, off))  in do_mtd_io()
332 		off += mtd->erasesize;  in do_mtd_io()
337 		if (mtd_is_aligned_with_block_size(mtd, off) &&  in do_mtd_io()
338 		    mtd_block_isbad(mtd, off)) {  in do_mtd_io()
339 			off += mtd->erasesize;  in do_mtd_io()
344 			ret = mtd_read_oob(mtd, off, &io_op);  in do_mtd_io()
346 			ret = mtd_special_write_oob(mtd, off, &io_op,  in do_mtd_io()
362 		mtd_dump_device_buf(mtd, start_off, buf, len, woob);  in do_mtd_io()
371 		       read ? "Read" : "Write", mtd->name, ret);  in do_mtd_io()
378 	put_mtd_device(mtd);  in do_mtd_io()
387 	struct mtd_info *mtd;  in do_mtd_erase()  local
395 	mtd = get_mtd_by_name(argv[1]);  in do_mtd_erase()
396 	if (IS_ERR_OR_NULL(mtd))  in do_mtd_erase()
405 	len = argc > 1 ? simple_strtoul(argv[1], NULL, 16) : mtd->size;  in do_mtd_erase()
407 	if (!mtd_is_aligned_with_block_size(mtd, off)) {  in do_mtd_erase()
409 		       mtd->erasesize);  in do_mtd_erase()
414 	if (!mtd_is_aligned_with_block_size(mtd, len)) {  in do_mtd_erase()
416 		       mtd->erasesize);  in do_mtd_erase()
422 	       off, off + len - 1, mtd_div_by_eb(len, mtd));  in do_mtd_erase()
424 	erase_op.mtd = mtd;  in do_mtd_erase()
430 		ret = mtd_erase(mtd, &erase_op);  in do_mtd_erase()
440 		erase_op.len -= mtd->erasesize;  in do_mtd_erase()
441 		erase_op.addr = erase_op.fail_addr + mtd->erasesize;  in do_mtd_erase()
450 	put_mtd_device(mtd);  in do_mtd_erase()
458 	struct mtd_info *mtd;  in do_mtd_bad()  local
464 	mtd = get_mtd_by_name(argv[1]);  in do_mtd_bad()
465 	if (IS_ERR_OR_NULL(mtd))  in do_mtd_bad()
468 	if (!mtd_can_have_bb(mtd)) {  in do_mtd_bad()
473 	printf("MTD device %s bad blocks list:\n", mtd->name);  in do_mtd_bad()
474 	for (off = 0; off < mtd->size; off += mtd->erasesize) {  in do_mtd_bad()
475 		if (mtd_block_isbad(mtd, off))  in do_mtd_bad()
480 	put_mtd_device(mtd);  in do_mtd_bad()
490 	struct mtd_info *mtd;  in mtd_name_complete()  local
502 	mtd_for_each_device(mtd) {  in mtd_name_complete()
504 		    (len > strlen(mtd->name) ||  in mtd_name_complete()
505 		     strncmp(argv[0], mtd->name, len)))  in mtd_name_complete()
513 		cmdv[n_found++] = mtd->name;  in mtd_name_complete()
547 U_BOOT_CMD_WITH_SUBCMDS(mtd, "MTD utils", mtd_help_text,