summaryrefslogtreecommitdiff
path: root/memories/nandflash/NandCommon.h
blob: 47fefa7da9c631750df9295d2ae04c772c5f8437 (plain)
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
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
/* ----------------------------------------------------------------------------
 *         ATMEL Microcontroller Software Support 
 * ----------------------------------------------------------------------------
 * Copyright (c) 2008, Atmel Corporation
 *
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * - Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the disclaimer below.
 *
 * Atmel's name may not be used to endorse or promote products derived from
 * this software without specific prior written permission.
 *
 * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
 * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
 * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * ----------------------------------------------------------------------------
 */

#ifndef NANDCOMMON_H
#define NANDCOMMON_H

//------------------------------------------------------------------------------
//         Definitions
//------------------------------------------------------------------------------
#if defined(at91sam3u1) || defined(at91sam3u2) || defined(at91sam7se32)
#define NF_MAXPAGESIZE_SUPPORT_2K
#endif

//------------------------------------------------------------------------------
/// \page "NandFlash Maximum Supported Values"
/// Since no memory allocation is available, limits have been set on various
/// characteristics of a NandFlash chip:
/// 
/// !Maximums
/// - NandCommon_MAXNUMBLOCKS
/// - NandCommon_MAXNUMPAGESPERBLOCK
/// - NandCommon_MAXPAGESIZE

/// Maximum number of blocks in a device
#define NandCommon_MAXNUMBLOCKS             1024 //2048

/// Maximum number of pages in one block
#define NandCommon_MAXNUMPAGESPERBLOCK      256 //64

/// Maximum size of the data area of one page, in bytes.
#if !defined(NF_MAXPAGESIZE_SUPPORT_2K)
#define NandCommon_MAXPAGEDATASIZE          4096 //2048
#else
#define NandCommon_MAXPAGEDATASIZE          2048
#endif

/// Maximum size of the spare area of one page, in bytes.
#define NandCommon_MAXPAGESPARESIZE         128 //64

/// Maximum number of ecc bytes stored in the spare for one single page.
#define NandCommon_MAXSPAREECCBYTES         48 //24

/// Maximum number of extra free bytes inside the spare area of a page.
#define NandCommon_MAXSPAREEXTRABYTES       78 //38

//------------------------------------------------------------------------------

//------------------------------------------------------------------------------
/// \page "NandFlash Error Codes"
/// NandFlash API methods return either 0 (indicating that there was no error),
/// or one of the following error codes:
/// 
/// !Codes
/// - NandCommon_ERROR_NOMOREBLOCKS
/// - NandCommon_ERROR_BLOCKNOTMAPPED
/// - NandCommon_ERROR_OUTOFBOUNDS
/// - NandCommon_ERROR_MAPPINGNOTFOUND
/// - NandCommon_ERROR_CANNOTREAD

/// No more blocks can be allocated for a write operation.
#define NandCommon_ERROR_NOMOREBLOCKS       1

/// The desired logical block has no current physical mapping.
#define NandCommon_ERROR_BLOCKNOTMAPPED     2

/// Access if out-of-bounds.
#define NandCommon_ERROR_OUTOFBOUNDS        3

/// There are no block having the desired property.
#define NandCommon_ERROR_NOBLOCKFOUND       4

/// The nandflash device has no logical mapping information on it.
#define NandCommon_ERROR_MAPPINGNOTFOUND    5

/// A read operation cannot be carried out.
#define NandCommon_ERROR_CANNOTREAD         6

/// A write operation cannot be carried out.
#define NandCommon_ERROR_CANNOTWRITE        7

/// NandFlash chip model cannot be recognized.
#define NandCommon_ERROR_UNKNOWNMODEL       8

/// Page data is corrupted according to ECC
#define NandCommon_ERROR_CORRUPTEDDATA      9

/// Block is not in the required status.
#define NandCommon_ERROR_WRONGSTATUS        10

/// Device has no logical mapping stored in it
#define NandCommon_ERROR_NOMAPPING          11

/// The block being accessed is bad and must be replaced
#define NandCommon_ERROR_BADBLOCK           12

/// Failed to perform an erase operation
#define NandCommon_ERROR_CANNOTERASE        13

/// A hardware copyback operation failed.
#define NandCommon_ERROR_CANNOTCOPY         14

/// HW Ecc Not compatible with the Nand Model
#define NandCommon_ERROR_ECC_NOT_COMPATIBLE 15

//------------------------------------------------------------------------------

#endif //#ifndef NANDCOMMON_H

personal git repositories of Harald Welte. Your mileage may vary