1 /***************************************************************************
2 * Copyright (C) 2007 by Dominic Rath *
3 * Dominic.Rath@gmx.de *
5 * Partially based on drivers/mtd/nand_ids.c from Linux. *
6 * Copyright (C) 2002 Thomas Gleixner <tglx@linutronix.de> *
8 * This program is free software; you can redistribute it and/or modify *
9 * it under the terms of the GNU General Public License as published by *
10 * the Free Software Foundation; either version 2 of the License, or *
11 * (at your option) any later version. *
13 * This program is distributed in the hope that it will be useful, *
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
16 * GNU General Public License for more details. *
18 * You should have received a copy of the GNU General Public License *
19 * along with this program; if not, write to the *
20 * Free Software Foundation, Inc., *
21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
22 ***************************************************************************/
28 #include "time_support.h"
31 static int nand_read_page(struct nand_device
*nand
, uint32_t page
, uint8_t *data
, uint32_t data_size
, uint8_t *oob
, uint32_t oob_size
);
32 //static int nand_read_plain(struct nand_device *nand, uint32_t address, uint8_t *data, uint32_t data_size);
34 static int nand_write_page(struct nand_device
*nand
, uint32_t page
, uint8_t *data
, uint32_t data_size
, uint8_t *oob
, uint32_t oob_size
);
36 /* NAND flash controller
38 extern struct nand_flash_controller davinci_nand_controller
;
39 extern struct nand_flash_controller lpc3180_nand_controller
;
40 extern struct nand_flash_controller orion_nand_controller
;
41 extern struct nand_flash_controller s3c2410_nand_controller
;
42 extern struct nand_flash_controller s3c2412_nand_controller
;
43 extern struct nand_flash_controller s3c2440_nand_controller
;
44 extern struct nand_flash_controller s3c2443_nand_controller
;
45 extern struct nand_flash_controller imx31_nand_flash_controller
;
47 /* extern struct nand_flash_controller boundary_scan_nand_controller; */
49 static struct nand_flash_controller
*nand_flash_controllers
[] =
51 &davinci_nand_controller
,
52 &lpc3180_nand_controller
,
53 &orion_nand_controller
,
54 &s3c2410_nand_controller
,
55 &s3c2412_nand_controller
,
56 &s3c2440_nand_controller
,
57 &s3c2443_nand_controller
,
58 &imx31_nand_flash_controller
,
59 /* &boundary_scan_nand_controller, */
63 /* configured NAND devices and NAND Flash command handler */
64 static struct nand_device
*nand_devices
= NULL
;
65 static struct command
*nand_cmd
;
69 * Name, ID code, pagesize, chipsize in MegaByte, eraseblock size,
72 * Pagesize; 0, 256, 512
73 * 0 get this information from the extended chip ID
74 * 256 256 Byte page size
75 * 512 512 Byte page size
77 static struct nand_info nand_flash_ids
[] =
79 /* start "museum" IDs */
80 {"NAND 1MiB 5V 8-bit", 0x6e, 256, 1, 0x1000, 0},
81 {"NAND 2MiB 5V 8-bit", 0x64, 256, 2, 0x1000, 0},
82 {"NAND 4MiB 5V 8-bit", 0x6b, 512, 4, 0x2000, 0},
83 {"NAND 1MiB 3,3V 8-bit", 0xe8, 256, 1, 0x1000, 0},
84 {"NAND 1MiB 3,3V 8-bit", 0xec, 256, 1, 0x1000, 0},
85 {"NAND 2MiB 3,3V 8-bit", 0xea, 256, 2, 0x1000, 0},
86 {"NAND 4MiB 3,3V 8-bit", 0xd5, 512, 4, 0x2000, 0},
87 {"NAND 4MiB 3,3V 8-bit", 0xe3, 512, 4, 0x2000, 0},
88 {"NAND 4MiB 3,3V 8-bit", 0xe5, 512, 4, 0x2000, 0},
89 {"NAND 8MiB 3,3V 8-bit", 0xd6, 512, 8, 0x2000, 0},
91 {"NAND 8MiB 1,8V 8-bit", 0x39, 512, 8, 0x2000, 0},
92 {"NAND 8MiB 3,3V 8-bit", 0xe6, 512, 8, 0x2000, 0},
93 {"NAND 8MiB 1,8V 16-bit", 0x49, 512, 8, 0x2000, NAND_BUSWIDTH_16
},
94 {"NAND 8MiB 3,3V 16-bit", 0x59, 512, 8, 0x2000, NAND_BUSWIDTH_16
},
95 /* end "museum" IDs */
97 {"NAND 16MiB 1,8V 8-bit", 0x33, 512, 16, 0x4000, 0},
98 {"NAND 16MiB 3,3V 8-bit", 0x73, 512, 16, 0x4000, 0},
99 {"NAND 16MiB 1,8V 16-bit", 0x43, 512, 16, 0x4000, NAND_BUSWIDTH_16
},
100 {"NAND 16MiB 3,3V 16-bit", 0x53, 512, 16, 0x4000, NAND_BUSWIDTH_16
},
102 {"NAND 32MiB 1,8V 8-bit", 0x35, 512, 32, 0x4000, 0},
103 {"NAND 32MiB 3,3V 8-bit", 0x75, 512, 32, 0x4000, 0},
104 {"NAND 32MiB 1,8V 16-bit", 0x45, 512, 32, 0x4000, NAND_BUSWIDTH_16
},
105 {"NAND 32MiB 3,3V 16-bit", 0x55, 512, 32, 0x4000, NAND_BUSWIDTH_16
},
107 {"NAND 64MiB 1,8V 8-bit", 0x36, 512, 64, 0x4000, 0},
108 {"NAND 64MiB 3,3V 8-bit", 0x76, 512, 64, 0x4000, 0},
109 {"NAND 64MiB 1,8V 16-bit", 0x46, 512, 64, 0x4000, NAND_BUSWIDTH_16
},
110 {"NAND 64MiB 3,3V 16-bit", 0x56, 512, 64, 0x4000, NAND_BUSWIDTH_16
},
112 {"NAND 128MiB 1,8V 8-bit", 0x78, 512, 128, 0x4000, 0},
113 {"NAND 128MiB 1,8V 8-bit", 0x39, 512, 128, 0x4000, 0},
114 {"NAND 128MiB 3,3V 8-bit", 0x79, 512, 128, 0x4000, 0},
115 {"NAND 128MiB 1,8V 16-bit", 0x72, 512, 128, 0x4000, NAND_BUSWIDTH_16
},
116 {"NAND 128MiB 1,8V 16-bit", 0x49, 512, 128, 0x4000, NAND_BUSWIDTH_16
},
117 {"NAND 128MiB 3,3V 16-bit", 0x74, 512, 128, 0x4000, NAND_BUSWIDTH_16
},
118 {"NAND 128MiB 3,3V 16-bit", 0x59, 512, 128, 0x4000, NAND_BUSWIDTH_16
},
120 {"NAND 256MiB 3,3V 8-bit", 0x71, 512, 256, 0x4000, 0},
122 {"NAND 64MiB 1,8V 8-bit", 0xA2, 0, 64, 0, LP_OPTIONS
},
123 {"NAND 64MiB 3,3V 8-bit", 0xF2, 0, 64, 0, LP_OPTIONS
},
124 {"NAND 64MiB 1,8V 16-bit", 0xB2, 0, 64, 0, LP_OPTIONS16
},
125 {"NAND 64MiB 3,3V 16-bit", 0xC2, 0, 64, 0, LP_OPTIONS16
},
127 {"NAND 128MiB 1,8V 8-bit", 0xA1, 0, 128, 0, LP_OPTIONS
},
128 {"NAND 128MiB 3,3V 8-bit", 0xF1, 0, 128, 0, LP_OPTIONS
},
129 {"NAND 128MiB 1,8V 16-bit", 0xB1, 0, 128, 0, LP_OPTIONS16
},
130 {"NAND 128MiB 3,3V 16-bit", 0xC1, 0, 128, 0, LP_OPTIONS16
},
132 {"NAND 256MiB 1,8V 8-bit", 0xAA, 0, 256, 0, LP_OPTIONS
},
133 {"NAND 256MiB 3,3V 8-bit", 0xDA, 0, 256, 0, LP_OPTIONS
},
134 {"NAND 256MiB 1,8V 16-bit", 0xBA, 0, 256, 0, LP_OPTIONS16
},
135 {"NAND 256MiB 3,3V 16-bit", 0xCA, 0, 256, 0, LP_OPTIONS16
},
137 {"NAND 512MiB 1,8V 8-bit", 0xAC, 0, 512, 0, LP_OPTIONS
},
138 {"NAND 512MiB 3,3V 8-bit", 0xDC, 0, 512, 0, LP_OPTIONS
},
139 {"NAND 512MiB 1,8V 16-bit", 0xBC, 0, 512, 0, LP_OPTIONS16
},
140 {"NAND 512MiB 3,3V 16-bit", 0xCC, 0, 512, 0, LP_OPTIONS16
},
142 {"NAND 1GiB 1,8V 8-bit", 0xA3, 0, 1024, 0, LP_OPTIONS
},
143 {"NAND 1GiB 3,3V 8-bit", 0xD3, 0, 1024, 0, LP_OPTIONS
},
144 {"NAND 1GiB 1,8V 16-bit", 0xB3, 0, 1024, 0, LP_OPTIONS16
},
145 {"NAND 1GiB 3,3V 16-bit", 0xC3, 0, 1024, 0, LP_OPTIONS16
},
147 {"NAND 2GiB 1,8V 8-bit", 0xA5, 0, 2048, 0, LP_OPTIONS
},
148 {"NAND 2GiB 3,3V 8-bit", 0xD5, 0, 2048, 0, LP_OPTIONS
},
149 {"NAND 2GiB 1,8V 16-bit", 0xB5, 0, 2048, 0, LP_OPTIONS16
},
150 {"NAND 2GiB 3,3V 16-bit", 0xC5, 0, 2048, 0, LP_OPTIONS16
},
152 {NULL
, 0, 0, 0, 0, 0 }
155 /* Manufacturer ID list
157 static struct nand_manufacturer nand_manuf_ids
[] =
160 {NAND_MFR_TOSHIBA
, "Toshiba"},
161 {NAND_MFR_SAMSUNG
, "Samsung"},
162 {NAND_MFR_FUJITSU
, "Fujitsu"},
163 {NAND_MFR_NATIONAL
, "National"},
164 {NAND_MFR_RENESAS
, "Renesas"},
165 {NAND_MFR_STMICRO
, "ST Micro"},
166 {NAND_MFR_HYNIX
, "Hynix"},
167 {NAND_MFR_MICRON
, "Micron"},
172 * Define default oob placement schemes for large and small page devices
176 static struct nand_ecclayout nand_oob_8
= {
187 static struct nand_ecclayout nand_oob_16
= {
189 .eccpos
= {0, 1, 2, 3, 6, 7},
195 static struct nand_ecclayout nand_oob_64
= {
198 40, 41, 42, 43, 44, 45, 46, 47,
199 48, 49, 50, 51, 52, 53, 54, 55,
200 56, 57, 58, 59, 60, 61, 62, 63},
206 /* nand device <nand_controller> [controller options]
208 COMMAND_HANDLER(handle_nand_device_command
)
215 LOG_WARNING("incomplete flash device nand configuration");
216 return ERROR_FLASH_BANK_INVALID
;
219 for (i
= 0; nand_flash_controllers
[i
]; i
++)
221 struct nand_device
*p
, *c
;
223 if (strcmp(args
[0], nand_flash_controllers
[i
]->name
) == 0)
225 /* register flash specific commands */
226 if ((retval
= nand_flash_controllers
[i
]->register_commands(cmd_ctx
)) != ERROR_OK
)
228 LOG_ERROR("couldn't register '%s' commands", args
[0]);
232 c
= malloc(sizeof(struct nand_device
));
234 c
->controller
= nand_flash_controllers
[i
];
235 c
->controller_priv
= NULL
;
236 c
->manufacturer
= NULL
;
239 c
->address_cycles
= 0;
244 retval
= CALL_COMMAND_HANDLER(nand_flash_controllers
[i
]->nand_device_command
, c
);
245 if (ERROR_OK
!= retval
)
247 LOG_ERROR("'%s' driver rejected nand flash", c
->controller
->name
);
252 /* put NAND device in linked list */
255 /* find last flash device */
256 for (p
= nand_devices
; p
&& p
->next
; p
= p
->next
);
269 /* no valid NAND controller was found (i.e. the configuration option,
270 * didn't match one of the compiled-in controllers)
272 LOG_ERROR("No valid NAND flash controller found (%s)", args
[0]);
273 LOG_ERROR("compiled-in NAND flash controllers:");
274 for (i
= 0; nand_flash_controllers
[i
]; i
++)
276 LOG_ERROR("%i: %s", i
, nand_flash_controllers
[i
]->name
);
282 int nand_register_commands(struct command_context
*cmd_ctx
)
284 nand_cmd
= register_command(cmd_ctx
, NULL
, "nand", NULL
, COMMAND_ANY
, "NAND specific commands");
286 register_command(cmd_ctx
, nand_cmd
, "device", handle_nand_device_command
, COMMAND_CONFIG
, NULL
);
291 struct nand_device
*get_nand_device_by_num(int num
)
293 struct nand_device
*p
;
296 for (p
= nand_devices
; p
; p
= p
->next
)
307 int nand_command_get_device_by_num(struct command_context
*cmd_ctx
,
308 const char *str
, struct nand_device
**nand
)
311 COMMAND_PARSE_NUMBER(uint
, str
, num
);
312 *nand
= get_nand_device_by_num(num
);
314 command_print(cmd_ctx
, "NAND flash device '#%s' is out of bounds", str
);
315 return ERROR_INVALID_ARGUMENTS
;
320 static int nand_build_bbt(struct nand_device
*nand
, int first
, int last
)
326 if ((first
< 0) || (first
>= nand
->num_blocks
))
329 if ((last
>= nand
->num_blocks
) || (last
== -1))
330 last
= nand
->num_blocks
- 1;
332 for (i
= first
; i
< last
; i
++)
334 nand_read_page(nand
, page
, NULL
, 0, oob
, 6);
336 if (((nand
->device
->options
& NAND_BUSWIDTH_16
) && ((oob
[0] & oob
[1]) != 0xff))
337 || (((nand
->page_size
== 512) && (oob
[5] != 0xff)) ||
338 ((nand
->page_size
== 2048) && (oob
[0] != 0xff))))
340 LOG_WARNING("bad block: %i", i
);
341 nand
->blocks
[i
].is_bad
= 1;
345 nand
->blocks
[i
].is_bad
= 0;
348 page
+= (nand
->erase_size
/ nand
->page_size
);
354 int nand_read_status(struct nand_device
*nand
, uint8_t *status
)
357 return ERROR_NAND_DEVICE_NOT_PROBED
;
359 /* Send read status command */
360 nand
->controller
->command(nand
, NAND_CMD_STATUS
);
365 if (nand
->device
->options
& NAND_BUSWIDTH_16
)
368 nand
->controller
->read_data(nand
, &data
);
369 *status
= data
& 0xff;
373 nand
->controller
->read_data(nand
, status
);
379 static int nand_poll_ready(struct nand_device
*nand
, int timeout
)
383 nand
->controller
->command(nand
, NAND_CMD_STATUS
);
385 if (nand
->device
->options
& NAND_BUSWIDTH_16
) {
387 nand
->controller
->read_data(nand
, &data
);
388 status
= data
& 0xff;
390 nand
->controller
->read_data(nand
, &status
);
392 if (status
& NAND_STATUS_READY
)
397 return (status
& NAND_STATUS_READY
) != 0;
400 int nand_probe(struct nand_device
*nand
)
402 uint8_t manufacturer_id
, device_id
;
407 /* clear device data */
409 nand
->manufacturer
= NULL
;
411 /* clear device parameters */
413 nand
->address_cycles
= 0;
415 nand
->erase_size
= 0;
417 /* initialize controller (device parameters are zero, use controller default) */
418 if ((retval
= nand
->controller
->init(nand
) != ERROR_OK
))
422 case ERROR_NAND_OPERATION_FAILED
:
423 LOG_DEBUG("controller initialization failed");
424 return ERROR_NAND_OPERATION_FAILED
;
425 case ERROR_NAND_OPERATION_NOT_SUPPORTED
:
426 LOG_ERROR("BUG: controller reported that it doesn't support default parameters");
427 return ERROR_NAND_OPERATION_FAILED
;
429 LOG_ERROR("BUG: unknown controller initialization failure");
430 return ERROR_NAND_OPERATION_FAILED
;
434 nand
->controller
->command(nand
, NAND_CMD_RESET
);
435 nand
->controller
->reset(nand
);
437 nand
->controller
->command(nand
, NAND_CMD_READID
);
438 nand
->controller
->address(nand
, 0x0);
440 if (nand
->bus_width
== 8)
442 nand
->controller
->read_data(nand
, &manufacturer_id
);
443 nand
->controller
->read_data(nand
, &device_id
);
448 nand
->controller
->read_data(nand
, &data_buf
);
449 manufacturer_id
= data_buf
& 0xff;
450 nand
->controller
->read_data(nand
, &data_buf
);
451 device_id
= data_buf
& 0xff;
454 for (i
= 0; nand_flash_ids
[i
].name
; i
++)
456 if (nand_flash_ids
[i
].id
== device_id
)
458 nand
->device
= &nand_flash_ids
[i
];
463 for (i
= 0; nand_manuf_ids
[i
].name
; i
++)
465 if (nand_manuf_ids
[i
].id
== manufacturer_id
)
467 nand
->manufacturer
= &nand_manuf_ids
[i
];
472 if (!nand
->manufacturer
)
474 nand
->manufacturer
= &nand_manuf_ids
[0];
475 nand
->manufacturer
->id
= manufacturer_id
;
480 LOG_ERROR("unknown NAND flash device found, manufacturer id: 0x%2.2x device id: 0x%2.2x",
481 manufacturer_id
, device_id
);
482 return ERROR_NAND_OPERATION_FAILED
;
485 LOG_DEBUG("found %s (%s)", nand
->device
->name
, nand
->manufacturer
->name
);
487 /* initialize device parameters */
490 if (nand
->device
->options
& NAND_BUSWIDTH_16
)
491 nand
->bus_width
= 16;
495 /* Do we need extended device probe information? */
496 if (nand
->device
->page_size
== 0 ||
497 nand
->device
->erase_size
== 0)
499 if (nand
->bus_width
== 8)
501 nand
->controller
->read_data(nand
, id_buff
+ 3);
502 nand
->controller
->read_data(nand
, id_buff
+ 4);
503 nand
->controller
->read_data(nand
, id_buff
+ 5);
509 nand
->controller
->read_data(nand
, &data_buf
);
510 id_buff
[3] = data_buf
;
512 nand
->controller
->read_data(nand
, &data_buf
);
513 id_buff
[4] = data_buf
;
515 nand
->controller
->read_data(nand
, &data_buf
);
516 id_buff
[5] = data_buf
>> 8;
521 if (nand
->device
->page_size
== 0)
523 nand
->page_size
= 1 << (10 + (id_buff
[4] & 3));
525 else if (nand
->device
->page_size
== 256)
527 LOG_ERROR("NAND flashes with 256 byte pagesize are not supported");
528 return ERROR_NAND_OPERATION_FAILED
;
532 nand
->page_size
= nand
->device
->page_size
;
535 /* number of address cycles */
536 if (nand
->page_size
<= 512)
538 /* small page devices */
539 if (nand
->device
->chip_size
<= 32)
540 nand
->address_cycles
= 3;
541 else if (nand
->device
->chip_size
<= 8*1024)
542 nand
->address_cycles
= 4;
545 LOG_ERROR("BUG: small page NAND device with more than 8 GiB encountered");
546 nand
->address_cycles
= 5;
551 /* large page devices */
552 if (nand
->device
->chip_size
<= 128)
553 nand
->address_cycles
= 4;
554 else if (nand
->device
->chip_size
<= 32*1024)
555 nand
->address_cycles
= 5;
558 LOG_ERROR("BUG: large page NAND device with more than 32 GiB encountered");
559 nand
->address_cycles
= 6;
564 if (nand
->device
->erase_size
== 0)
566 switch ((id_buff
[4] >> 4) & 3) {
568 nand
->erase_size
= 64 << 10;
571 nand
->erase_size
= 128 << 10;
574 nand
->erase_size
= 256 << 10;
577 nand
->erase_size
=512 << 10;
583 nand
->erase_size
= nand
->device
->erase_size
;
586 /* initialize controller, but leave parameters at the controllers default */
587 if ((retval
= nand
->controller
->init(nand
) != ERROR_OK
))
591 case ERROR_NAND_OPERATION_FAILED
:
592 LOG_DEBUG("controller initialization failed");
593 return ERROR_NAND_OPERATION_FAILED
;
594 case ERROR_NAND_OPERATION_NOT_SUPPORTED
:
595 LOG_ERROR("controller doesn't support requested parameters (buswidth: %i, address cycles: %i, page size: %i)",
596 nand
->bus_width
, nand
->address_cycles
, nand
->page_size
);
597 return ERROR_NAND_OPERATION_FAILED
;
599 LOG_ERROR("BUG: unknown controller initialization failure");
600 return ERROR_NAND_OPERATION_FAILED
;
604 nand
->num_blocks
= (nand
->device
->chip_size
* 1024) / (nand
->erase_size
/ 1024);
605 nand
->blocks
= malloc(sizeof(struct nand_block
) * nand
->num_blocks
);
607 for (i
= 0; i
< nand
->num_blocks
; i
++)
609 nand
->blocks
[i
].size
= nand
->erase_size
;
610 nand
->blocks
[i
].offset
= i
* nand
->erase_size
;
611 nand
->blocks
[i
].is_erased
= -1;
612 nand
->blocks
[i
].is_bad
= -1;
618 static int nand_erase(struct nand_device
*nand
, int first_block
, int last_block
)
626 return ERROR_NAND_DEVICE_NOT_PROBED
;
628 if ((first_block
< 0) || (last_block
> nand
->num_blocks
))
629 return ERROR_INVALID_ARGUMENTS
;
631 /* make sure we know if a block is bad before erasing it */
632 for (i
= first_block
; i
<= last_block
; i
++)
634 if (nand
->blocks
[i
].is_bad
== -1)
636 nand_build_bbt(nand
, i
, last_block
);
641 for (i
= first_block
; i
<= last_block
; i
++)
643 /* Send erase setup command */
644 nand
->controller
->command(nand
, NAND_CMD_ERASE1
);
646 page
= i
* (nand
->erase_size
/ nand
->page_size
);
648 /* Send page address */
649 if (nand
->page_size
<= 512)
652 nand
->controller
->address(nand
, page
& 0xff);
653 nand
->controller
->address(nand
, (page
>> 8) & 0xff);
655 /* 3rd cycle only on devices with more than 32 MiB */
656 if (nand
->address_cycles
>= 4)
657 nand
->controller
->address(nand
, (page
>> 16) & 0xff);
659 /* 4th cycle only on devices with more than 8 GiB */
660 if (nand
->address_cycles
>= 5)
661 nand
->controller
->address(nand
, (page
>> 24) & 0xff);
666 nand
->controller
->address(nand
, page
& 0xff);
667 nand
->controller
->address(nand
, (page
>> 8) & 0xff);
669 /* 3rd cycle only on devices with more than 128 MiB */
670 if (nand
->address_cycles
>= 5)
671 nand
->controller
->address(nand
, (page
>> 16) & 0xff);
674 /* Send erase confirm command */
675 nand
->controller
->command(nand
, NAND_CMD_ERASE2
);
677 retval
= nand
->controller
->nand_ready
?
678 nand
->controller
->nand_ready(nand
, 1000) :
679 nand_poll_ready(nand
, 1000);
681 LOG_ERROR("timeout waiting for NAND flash block erase to complete");
682 return ERROR_NAND_OPERATION_TIMEOUT
;
685 if ((retval
= nand_read_status(nand
, &status
)) != ERROR_OK
)
687 LOG_ERROR("couldn't read status");
688 return ERROR_NAND_OPERATION_FAILED
;
693 LOG_ERROR("didn't erase %sblock %d; status: 0x%2.2x",
694 (nand
->blocks
[i
].is_bad
== 1)
697 /* continue; other blocks might still be erasable */
700 nand
->blocks
[i
].is_erased
= 1;
707 static int nand_read_plain(struct nand_device
*nand
, uint32_t address
, uint8_t *data
, uint32_t data_size
)
712 return ERROR_NAND_DEVICE_NOT_PROBED
;
714 if (address
% nand
->page_size
)
716 LOG_ERROR("reads need to be page aligned");
717 return ERROR_NAND_OPERATION_FAILED
;
720 page
= malloc(nand
->page_size
);
722 while (data_size
> 0)
724 uint32_t thisrun_size
= (data_size
> nand
->page_size
) ? nand
->page_size
: data_size
;
725 uint32_t page_address
;
728 page_address
= address
/ nand
->page_size
;
730 nand_read_page(nand
, page_address
, page
, nand
->page_size
, NULL
, 0);
732 memcpy(data
, page
, thisrun_size
);
734 address
+= thisrun_size
;
735 data
+= thisrun_size
;
736 data_size
-= thisrun_size
;
744 static int nand_write_plain(struct nand_device
*nand
, uint32_t address
, uint8_t *data
, uint32_t data_size
)
749 return ERROR_NAND_DEVICE_NOT_PROBED
;
751 if (address
% nand
->page_size
)
753 LOG_ERROR("writes need to be page aligned");
754 return ERROR_NAND_OPERATION_FAILED
;
757 page
= malloc(nand
->page_size
);
759 while (data_size
> 0)
761 uint32_t thisrun_size
= (data_size
> nand
->page_size
) ? nand
->page_size
: data_size
;
762 uint32_t page_address
;
764 memset(page
, 0xff, nand
->page_size
);
765 memcpy(page
, data
, thisrun_size
);
767 page_address
= address
/ nand
->page_size
;
769 nand_write_page(nand
, page_address
, page
, nand
->page_size
, NULL
, 0);
771 address
+= thisrun_size
;
772 data
+= thisrun_size
;
773 data_size
-= thisrun_size
;
782 int nand_write_page(struct nand_device
*nand
, uint32_t page
, uint8_t *data
, uint32_t data_size
, uint8_t *oob
, uint32_t oob_size
)
787 return ERROR_NAND_DEVICE_NOT_PROBED
;
789 block
= page
/ (nand
->erase_size
/ nand
->page_size
);
790 if (nand
->blocks
[block
].is_erased
== 1)
791 nand
->blocks
[block
].is_erased
= 0;
793 if (nand
->use_raw
|| nand
->controller
->write_page
== NULL
)
794 return nand_write_page_raw(nand
, page
, data
, data_size
, oob
, oob_size
);
796 return nand
->controller
->write_page(nand
, page
, data
, data_size
, oob
, oob_size
);
799 static int nand_read_page(struct nand_device
*nand
, uint32_t page
, uint8_t *data
, uint32_t data_size
, uint8_t *oob
, uint32_t oob_size
)
802 return ERROR_NAND_DEVICE_NOT_PROBED
;
804 if (nand
->use_raw
|| nand
->controller
->read_page
== NULL
)
805 return nand_read_page_raw(nand
, page
, data
, data_size
, oob
, oob_size
);
807 return nand
->controller
->read_page(nand
, page
, data
, data_size
, oob
, oob_size
);
810 int nand_read_page_raw(struct nand_device
*nand
, uint32_t page
, uint8_t *data
, uint32_t data_size
, uint8_t *oob
, uint32_t oob_size
)
815 return ERROR_NAND_DEVICE_NOT_PROBED
;
817 if (nand
->page_size
<= 512)
819 /* small page device */
821 nand
->controller
->command(nand
, NAND_CMD_READ0
);
823 nand
->controller
->command(nand
, NAND_CMD_READOOB
);
825 /* column (always 0, we start at the beginning of a page/OOB area) */
826 nand
->controller
->address(nand
, 0x0);
829 nand
->controller
->address(nand
, page
& 0xff);
830 nand
->controller
->address(nand
, (page
>> 8) & 0xff);
832 /* 4th cycle only on devices with more than 32 MiB */
833 if (nand
->address_cycles
>= 4)
834 nand
->controller
->address(nand
, (page
>> 16) & 0xff);
836 /* 5th cycle only on devices with more than 8 GiB */
837 if (nand
->address_cycles
>= 5)
838 nand
->controller
->address(nand
, (page
>> 24) & 0xff);
842 /* large page device */
843 nand
->controller
->command(nand
, NAND_CMD_READ0
);
845 /* column (0 when we start at the beginning of a page,
846 * or 2048 for the beginning of OOB area)
848 nand
->controller
->address(nand
, 0x0);
850 nand
->controller
->address(nand
, 0x0);
852 nand
->controller
->address(nand
, 0x8);
855 nand
->controller
->address(nand
, page
& 0xff);
856 nand
->controller
->address(nand
, (page
>> 8) & 0xff);
858 /* 5th cycle only on devices with more than 128 MiB */
859 if (nand
->address_cycles
>= 5)
860 nand
->controller
->address(nand
, (page
>> 16) & 0xff);
862 /* large page devices need a start command */
863 nand
->controller
->command(nand
, NAND_CMD_READSTART
);
866 if (nand
->controller
->nand_ready
) {
867 if (!nand
->controller
->nand_ready(nand
, 100))
868 return ERROR_NAND_OPERATION_TIMEOUT
;
875 if (nand
->controller
->read_block_data
!= NULL
)
876 (nand
->controller
->read_block_data
)(nand
, data
, data_size
);
879 for (i
= 0; i
< data_size
;)
881 if (nand
->device
->options
& NAND_BUSWIDTH_16
)
883 nand
->controller
->read_data(nand
, data
);
889 nand
->controller
->read_data(nand
, data
);
899 if (nand
->controller
->read_block_data
!= NULL
)
900 (nand
->controller
->read_block_data
)(nand
, oob
, oob_size
);
903 for (i
= 0; i
< oob_size
;)
905 if (nand
->device
->options
& NAND_BUSWIDTH_16
)
907 nand
->controller
->read_data(nand
, oob
);
913 nand
->controller
->read_data(nand
, oob
);
924 int nand_write_page_raw(struct nand_device
*nand
, uint32_t page
, uint8_t *data
, uint32_t data_size
, uint8_t *oob
, uint32_t oob_size
)
931 return ERROR_NAND_DEVICE_NOT_PROBED
;
933 nand
->controller
->command(nand
, NAND_CMD_SEQIN
);
935 if (nand
->page_size
<= 512)
937 /* column (always 0, we start at the beginning of a page/OOB area) */
938 nand
->controller
->address(nand
, 0x0);
941 nand
->controller
->address(nand
, page
& 0xff);
942 nand
->controller
->address(nand
, (page
>> 8) & 0xff);
944 /* 4th cycle only on devices with more than 32 MiB */
945 if (nand
->address_cycles
>= 4)
946 nand
->controller
->address(nand
, (page
>> 16) & 0xff);
948 /* 5th cycle only on devices with more than 8 GiB */
949 if (nand
->address_cycles
>= 5)
950 nand
->controller
->address(nand
, (page
>> 24) & 0xff);
954 /* column (0 when we start at the beginning of a page,
955 * or 2048 for the beginning of OOB area)
957 nand
->controller
->address(nand
, 0x0);
959 nand
->controller
->address(nand
, 0x0);
961 nand
->controller
->address(nand
, 0x8);
964 nand
->controller
->address(nand
, page
& 0xff);
965 nand
->controller
->address(nand
, (page
>> 8) & 0xff);
967 /* 5th cycle only on devices with more than 128 MiB */
968 if (nand
->address_cycles
>= 5)
969 nand
->controller
->address(nand
, (page
>> 16) & 0xff);
974 if (nand
->controller
->write_block_data
!= NULL
)
975 (nand
->controller
->write_block_data
)(nand
, data
, data_size
);
978 for (i
= 0; i
< data_size
;)
980 if (nand
->device
->options
& NAND_BUSWIDTH_16
)
982 uint16_t data_buf
= le_to_h_u16(data
);
983 nand
->controller
->write_data(nand
, data_buf
);
989 nand
->controller
->write_data(nand
, *data
);
999 if (nand
->controller
->write_block_data
!= NULL
)
1000 (nand
->controller
->write_block_data
)(nand
, oob
, oob_size
);
1003 for (i
= 0; i
< oob_size
;)
1005 if (nand
->device
->options
& NAND_BUSWIDTH_16
)
1007 uint16_t oob_buf
= le_to_h_u16(data
);
1008 nand
->controller
->write_data(nand
, oob_buf
);
1014 nand
->controller
->write_data(nand
, *oob
);
1022 nand
->controller
->command(nand
, NAND_CMD_PAGEPROG
);
1024 retval
= nand
->controller
->nand_ready
?
1025 nand
->controller
->nand_ready(nand
, 100) :
1026 nand_poll_ready(nand
, 100);
1028 return ERROR_NAND_OPERATION_TIMEOUT
;
1030 if ((retval
= nand_read_status(nand
, &status
)) != ERROR_OK
)
1032 LOG_ERROR("couldn't read status");
1033 return ERROR_NAND_OPERATION_FAILED
;
1036 if (status
& NAND_STATUS_FAIL
)
1038 LOG_ERROR("write operation didn't pass, status: 0x%2.2x", status
);
1039 return ERROR_NAND_OPERATION_FAILED
;
1045 COMMAND_HANDLER(handle_nand_list_command
)
1047 struct nand_device
*p
;
1052 command_print(cmd_ctx
, "no NAND flash devices configured");
1056 for (p
= nand_devices
, i
= 0; p
; p
= p
->next
, i
++)
1059 command_print(cmd_ctx
, "#%i: %s (%s) "
1060 "pagesize: %i, buswidth: %i,\n\t"
1061 "blocksize: %i, blocks: %i",
1062 i
, p
->device
->name
, p
->manufacturer
->name
,
1063 p
->page_size
, p
->bus_width
,
1064 p
->erase_size
, p
->num_blocks
);
1066 command_print(cmd_ctx
, "#%i: not probed", i
);
1072 COMMAND_HANDLER(handle_nand_info_command
)
1079 struct nand_device
*p
;
1080 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1081 if (ERROR_OK
!= retval
)
1086 return ERROR_COMMAND_SYNTAX_ERROR
;
1092 COMMAND_PARSE_NUMBER(int, args
[1], i
);
1097 COMMAND_PARSE_NUMBER(int, args
[1], first
);
1098 COMMAND_PARSE_NUMBER(int, args
[2], last
);
1102 if (NULL
== p
->device
)
1104 command_print(cmd_ctx
, "#%s: not probed", args
[0]);
1108 if (first
>= p
->num_blocks
)
1109 first
= p
->num_blocks
- 1;
1111 if (last
>= p
->num_blocks
)
1112 last
= p
->num_blocks
- 1;
1114 command_print(cmd_ctx
, "#%i: %s (%s) pagesize: %i, buswidth: %i, erasesize: %i",
1115 i
++, p
->device
->name
, p
->manufacturer
->name
, p
->page_size
, p
->bus_width
, p
->erase_size
);
1117 for (j
= first
; j
<= last
; j
++)
1119 char *erase_state
, *bad_state
;
1121 if (p
->blocks
[j
].is_erased
== 0)
1122 erase_state
= "not erased";
1123 else if (p
->blocks
[j
].is_erased
== 1)
1124 erase_state
= "erased";
1126 erase_state
= "erase state unknown";
1128 if (p
->blocks
[j
].is_bad
== 0)
1130 else if (p
->blocks
[j
].is_bad
== 1)
1131 bad_state
= " (marked bad)";
1133 bad_state
= " (block condition unknown)";
1135 command_print(cmd_ctx
,
1136 "\t#%i: 0x%8.8" PRIx32
" (%" PRId32
"kB) %s%s",
1138 p
->blocks
[j
].offset
,
1139 p
->blocks
[j
].size
/ 1024,
1147 COMMAND_HANDLER(handle_nand_probe_command
)
1151 return ERROR_COMMAND_SYNTAX_ERROR
;
1154 struct nand_device
*p
;
1155 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1156 if (ERROR_OK
!= retval
)
1159 if ((retval
= nand_probe(p
)) == ERROR_OK
)
1161 command_print(cmd_ctx
, "NAND flash device '%s' found", p
->device
->name
);
1163 else if (retval
== ERROR_NAND_OPERATION_FAILED
)
1165 command_print(cmd_ctx
, "probing failed for NAND flash device");
1169 command_print(cmd_ctx
, "unknown error when probing NAND flash device");
1175 COMMAND_HANDLER(handle_nand_erase_command
)
1177 if (argc
!= 1 && argc
!= 3)
1179 return ERROR_COMMAND_SYNTAX_ERROR
;
1183 struct nand_device
*p
;
1184 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1185 if (ERROR_OK
!= retval
)
1188 unsigned long offset
;
1189 unsigned long length
;
1191 /* erase specified part of the chip; or else everything */
1193 unsigned long size
= p
->erase_size
* p
->num_blocks
;
1195 COMMAND_PARSE_NUMBER(ulong
, args
[1], offset
);
1196 if ((offset
% p
->erase_size
) != 0 || offset
>= size
)
1197 return ERROR_INVALID_ARGUMENTS
;
1199 COMMAND_PARSE_NUMBER(ulong
, args
[2], length
);
1200 if ((length
== 0) || (length
% p
->erase_size
) != 0
1201 || (length
+ offset
) > size
)
1202 return ERROR_INVALID_ARGUMENTS
;
1204 offset
/= p
->erase_size
;
1205 length
/= p
->erase_size
;
1208 length
= p
->num_blocks
;
1211 retval
= nand_erase(p
, offset
, offset
+ length
- 1);
1212 if (retval
== ERROR_OK
)
1214 command_print(cmd_ctx
, "erased blocks %lu to %lu "
1215 "on NAND flash device #%s '%s'",
1216 offset
, offset
+ length
,
1217 args
[0], p
->device
->name
);
1219 else if (retval
== ERROR_NAND_OPERATION_FAILED
)
1221 command_print(cmd_ctx
, "erase failed");
1225 command_print(cmd_ctx
, "unknown error when erasing NAND flash device");
1231 COMMAND_HANDLER(handle_nand_check_bad_blocks_command
)
1236 if ((argc
< 1) || (argc
> 3) || (argc
== 2))
1238 return ERROR_COMMAND_SYNTAX_ERROR
;
1242 struct nand_device
*p
;
1243 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1244 if (ERROR_OK
!= retval
)
1249 unsigned long offset
;
1250 unsigned long length
;
1252 COMMAND_PARSE_NUMBER(ulong
, args
[1], offset
);
1253 if (offset
% p
->erase_size
)
1254 return ERROR_INVALID_ARGUMENTS
;
1255 offset
/= p
->erase_size
;
1257 COMMAND_PARSE_NUMBER(ulong
, args
[2], length
);
1258 if (length
% p
->erase_size
)
1259 return ERROR_INVALID_ARGUMENTS
;
1262 length
/= p
->erase_size
;
1265 last
= offset
+ length
;
1268 retval
= nand_build_bbt(p
, first
, last
);
1269 if (retval
== ERROR_OK
)
1271 command_print(cmd_ctx
, "checked NAND flash device for bad blocks, "
1272 "use \"nand info\" command to list blocks");
1274 else if (retval
== ERROR_NAND_OPERATION_FAILED
)
1276 command_print(cmd_ctx
, "error when checking for bad blocks on "
1277 "NAND flash device");
1281 command_print(cmd_ctx
, "unknown error when checking for bad "
1282 "blocks on NAND flash device");
1288 COMMAND_HANDLER(handle_nand_write_command
)
1291 uint32_t binary_size
;
1293 enum oob_formats oob_format
= NAND_OOB_NONE
;
1295 struct fileio fileio
;
1300 return ERROR_COMMAND_SYNTAX_ERROR
;
1303 struct nand_device
*p
;
1304 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1305 if (ERROR_OK
!= retval
)
1308 uint8_t *page
= NULL
;
1309 uint32_t page_size
= 0;
1310 uint8_t *oob
= NULL
;
1311 uint32_t oob_size
= 0;
1312 const int *eccpos
= NULL
;
1314 COMMAND_PARSE_NUMBER(u32
, args
[2], offset
);
1318 for (unsigned i
= 3; i
< argc
; i
++)
1320 if (!strcmp(args
[i
], "oob_raw"))
1321 oob_format
|= NAND_OOB_RAW
;
1322 else if (!strcmp(args
[i
], "oob_only"))
1323 oob_format
|= NAND_OOB_RAW
| NAND_OOB_ONLY
;
1324 else if (!strcmp(args
[i
], "oob_softecc"))
1325 oob_format
|= NAND_OOB_SW_ECC
;
1326 else if (!strcmp(args
[i
], "oob_softecc_kw"))
1327 oob_format
|= NAND_OOB_SW_ECC_KW
;
1330 command_print(cmd_ctx
, "unknown option: %s", args
[i
]);
1331 return ERROR_COMMAND_SYNTAX_ERROR
;
1336 struct duration bench
;
1337 duration_start(&bench
);
1339 if (fileio_open(&fileio
, args
[1], FILEIO_READ
, FILEIO_BINARY
) != ERROR_OK
)
1344 buf_cnt
= binary_size
= fileio
.size
;
1346 if (!(oob_format
& NAND_OOB_ONLY
))
1348 page_size
= p
->page_size
;
1349 page
= malloc(p
->page_size
);
1352 if (oob_format
& (NAND_OOB_RAW
| NAND_OOB_SW_ECC
| NAND_OOB_SW_ECC_KW
))
1354 if (p
->page_size
== 512) {
1356 eccpos
= nand_oob_16
.eccpos
;
1357 } else if (p
->page_size
== 2048) {
1359 eccpos
= nand_oob_64
.eccpos
;
1361 oob
= malloc(oob_size
);
1364 if (offset
% p
->page_size
)
1366 command_print(cmd_ctx
, "only page size aligned offsets and sizes are supported");
1367 fileio_close(&fileio
);
1379 fileio_read(&fileio
, page_size
, page
, &size_read
);
1380 buf_cnt
-= size_read
;
1381 if (size_read
< page_size
)
1383 memset(page
+ size_read
, 0xff, page_size
- size_read
);
1387 if (oob_format
& NAND_OOB_SW_ECC
)
1391 memset(oob
, 0xff, oob_size
);
1392 for (i
= 0, j
= 0; i
< page_size
; i
+= 256) {
1393 nand_calculate_ecc(p
, page
+ i
, ecc
);
1394 oob
[eccpos
[j
++]] = ecc
[0];
1395 oob
[eccpos
[j
++]] = ecc
[1];
1396 oob
[eccpos
[j
++]] = ecc
[2];
1398 } else if (oob_format
& NAND_OOB_SW_ECC_KW
)
1401 * In this case eccpos is not used as
1402 * the ECC data is always stored contigously
1403 * at the end of the OOB area. It consists
1404 * of 10 bytes per 512-byte data block.
1407 uint8_t *ecc
= oob
+ oob_size
- page_size
/512 * 10;
1408 memset(oob
, 0xff, oob_size
);
1409 for (i
= 0; i
< page_size
; i
+= 512) {
1410 nand_calculate_ecc_kw(p
, page
+ i
, ecc
);
1414 else if (NULL
!= oob
)
1416 fileio_read(&fileio
, oob_size
, oob
, &size_read
);
1417 buf_cnt
-= size_read
;
1418 if (size_read
< oob_size
)
1420 memset(oob
+ size_read
, 0xff, oob_size
- size_read
);
1424 if (nand_write_page(p
, offset
/ p
->page_size
, page
, page_size
, oob
, oob_size
) != ERROR_OK
)
1426 command_print(cmd_ctx
, "failed writing file %s to NAND flash %s at offset 0x%8.8" PRIx32
"",
1427 args
[1], args
[0], offset
);
1429 fileio_close(&fileio
);
1435 offset
+= page_size
;
1438 fileio_close(&fileio
);
1443 if (duration_measure(&bench
) == ERROR_OK
)
1445 command_print(cmd_ctx
, "wrote file %s to NAND flash %s "
1446 "up to offset 0x%8.8" PRIx32
" in %fs (%0.3f kb/s)",
1447 args
[1], args
[0], offset
, duration_elapsed(&bench
),
1448 duration_kbps(&bench
, fileio
.size
));
1454 COMMAND_HANDLER(handle_nand_dump_command
)
1458 return ERROR_COMMAND_SYNTAX_ERROR
;
1461 struct nand_device
*p
;
1462 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1463 if (ERROR_OK
!= retval
)
1466 if (NULL
== p
->device
)
1468 command_print(cmd_ctx
, "#%s: not probed", args
[0]);
1472 struct fileio fileio
;
1474 uint8_t *page
= NULL
;
1475 uint32_t page_size
= 0;
1476 uint8_t *oob
= NULL
;
1477 uint32_t oob_size
= 0;
1479 COMMAND_PARSE_NUMBER(u32
, args
[2], address
);
1481 COMMAND_PARSE_NUMBER(u32
, args
[3], size
);
1482 uint32_t bytes_done
= 0;
1483 enum oob_formats oob_format
= NAND_OOB_NONE
;
1487 for (unsigned i
= 4; i
< argc
; i
++)
1489 if (!strcmp(args
[i
], "oob_raw"))
1490 oob_format
|= NAND_OOB_RAW
;
1491 else if (!strcmp(args
[i
], "oob_only"))
1492 oob_format
|= NAND_OOB_RAW
| NAND_OOB_ONLY
;
1494 command_print(cmd_ctx
, "unknown option: '%s'", args
[i
]);
1498 if ((address
% p
->page_size
) || (size
% p
->page_size
))
1500 command_print(cmd_ctx
, "only page size aligned addresses and sizes are supported");
1504 if (!(oob_format
& NAND_OOB_ONLY
))
1506 page_size
= p
->page_size
;
1507 page
= malloc(p
->page_size
);
1510 if (oob_format
& NAND_OOB_RAW
)
1512 if (p
->page_size
== 512)
1514 else if (p
->page_size
== 2048)
1516 oob
= malloc(oob_size
);
1519 if (fileio_open(&fileio
, args
[1], FILEIO_WRITE
, FILEIO_BINARY
) != ERROR_OK
)
1524 struct duration bench
;
1525 duration_start(&bench
);
1529 uint32_t size_written
;
1530 if ((retval
= nand_read_page(p
, address
/ p
->page_size
, page
, page_size
, oob
, oob_size
)) != ERROR_OK
)
1532 command_print(cmd_ctx
, "reading NAND flash page failed");
1535 fileio_close(&fileio
);
1541 fileio_write(&fileio
, page_size
, page
, &size_written
);
1542 bytes_done
+= page_size
;
1547 fileio_write(&fileio
, oob_size
, oob
, &size_written
);
1548 bytes_done
+= oob_size
;
1551 size
-= p
->page_size
;
1552 address
+= p
->page_size
;
1559 fileio_close(&fileio
);
1561 if (duration_measure(&bench
) == ERROR_OK
)
1563 command_print(cmd_ctx
, "dumped %lld byte in %fs (%0.3f kb/s)",
1564 fileio
.size
, duration_elapsed(&bench
),
1565 duration_kbps(&bench
, fileio
.size
));
1571 COMMAND_HANDLER(handle_nand_raw_access_command
)
1573 if ((argc
< 1) || (argc
> 2))
1575 return ERROR_COMMAND_SYNTAX_ERROR
;
1578 struct nand_device
*p
;
1579 int retval
= nand_command_get_device_by_num(cmd_ctx
, args
[0], &p
);
1580 if (ERROR_OK
!= retval
)
1583 if (NULL
== p
->device
)
1585 command_print(cmd_ctx
, "#%s: not probed", args
[0]);
1591 if (strcmp("enable", args
[1]) == 0)
1593 else if (strcmp("disable", args
[1]) == 0)
1596 return ERROR_COMMAND_SYNTAX_ERROR
;
1599 const char *msg
= p
->use_raw
? "enabled" : "disabled";
1600 command_print(cmd_ctx
, "raw access is %s", msg
);
1605 int nand_init(struct command_context
*cmd_ctx
)
1610 register_command(cmd_ctx
, nand_cmd
, "list",
1611 handle_nand_list_command
, COMMAND_EXEC
,
1612 "list configured NAND flash devices");
1613 register_command(cmd_ctx
, nand_cmd
, "info",
1614 handle_nand_info_command
, COMMAND_EXEC
,
1615 "print info about NAND flash device <num>");
1616 register_command(cmd_ctx
, nand_cmd
, "probe",
1617 handle_nand_probe_command
, COMMAND_EXEC
,
1618 "identify NAND flash device <num>");
1620 register_command(cmd_ctx
, nand_cmd
, "check_bad_blocks",
1621 handle_nand_check_bad_blocks_command
, COMMAND_EXEC
,
1622 "check NAND flash device <num> for bad blocks [<offset> <length>]");
1623 register_command(cmd_ctx
, nand_cmd
, "erase",
1624 handle_nand_erase_command
, COMMAND_EXEC
,
1625 "erase blocks on NAND flash device <num> [<offset> <length>]");
1626 register_command(cmd_ctx
, nand_cmd
, "dump",
1627 handle_nand_dump_command
, COMMAND_EXEC
,
1628 "dump from NAND flash device <num> <filename> "
1629 "<offset> <length> [oob_raw | oob_only]");
1630 register_command(cmd_ctx
, nand_cmd
, "write",
1631 handle_nand_write_command
, COMMAND_EXEC
,
1632 "write to NAND flash device <num> <filename> <offset> "
1633 "[oob_raw | oob_only | oob_softecc | oob_softecc_kw]");
1635 register_command(cmd_ctx
, nand_cmd
, "raw_access",
1636 handle_nand_raw_access_command
, COMMAND_EXEC
,
1637 "raw access to NAND flash device <num> ['enable'|'disable']");