Newer
Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
/*
* u-boot/include/linux/mtd/nand.h
*
* Copyright (c) 2000 David Woodhouse <dwmw2@mvhi.com>
* Steven J. Hill <sjhill@cotw.com>
*
* $Id: nand.h,v 1.8 2000/10/30 17:16:17 sjhill Exp $
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Info:
* Contains standard defines and IDs for NAND flash devices
*
* Changelog:
* 01-31-2000 DMW Created
* 09-18-2000 SJH Moved structure out of the Disk-On-Chip drivers
* so it can be used by other NAND flash device
* drivers. I also changed the copyright since none
* of the original contents of this file are specific
* to DoC devices. David can whack me with a baseball
* bat later if I did something naughty.
* 10-11-2000 SJH Added private NAND flash structure for driver
* 10-24-2000 SJH Added prototype for 'nand_scan' function
*/
#ifndef __LINUX_MTD_NAND_H
#define __LINUX_MTD_NAND_H
/*
* Standard NAND flash commands
*/
#define NAND_CMD_READ0 0
#define NAND_CMD_READ1 1
#define NAND_CMD_PAGEPROG 0x10
#define NAND_CMD_READOOB 0x50
#define NAND_CMD_ERASE1 0x60
#define NAND_CMD_STATUS 0x70
#define NAND_CMD_SEQIN 0x80
#define NAND_CMD_READID 0x90
#define NAND_CMD_ERASE2 0xd0
#define NAND_CMD_RESET 0xff
/*
* NAND Flash Manufacturer ID Codes
*/
#define NAND_MFR_TOSHIBA 0x98
#define NAND_MFR_SAMSUNG 0xec
/*
* NAND Flash Device ID Structure
*
* Structure overview:
*
* name - Complete name of device
*
* manufacture_id - manufacturer ID code of device.
*
* model_id - model ID code of device.
*
* chipshift - total number of address bits for the device which
* is used to calculate address offsets and the total
* number of bytes the device is capable of.
*
* page256 - denotes if flash device has 256 byte pages or not.
*
* pageadrlen - number of bytes minus one needed to hold the
* complete address into the flash array. Keep in
* mind that when a read or write is done to a
* specific address, the address is input serially
* 8 bits at a time. This structure member is used
* by the read/write routines as a loop index for
* shifting the address out 8 bits at a time.
*
* erasesize - size of an erase block in the flash device.
*/
struct nand_flash_dev {
char * name;
int manufacture_id;
int model_id;
int chipshift;
char page256;
char pageadrlen;
unsigned long erasesize;
};
#endif /* __LINUX_MTD_NAND_H */