|
1 // Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // e32\include\drivers\crashflashnand.h |
|
15 // |
|
16 // WARNING: This file contains some APIs which are internal and are subject |
|
17 // to change without notice. Such APIs should therefore not be used |
|
18 // outside the Kernel and Hardware Services package. |
|
19 // |
|
20 |
|
21 #ifndef __CRASHFLASHNAND_H__ |
|
22 #define __CRASHFLASHNAND_H__ |
|
23 #include <crashflash.h> |
|
24 |
|
25 class TPib; |
|
26 class TPibExtension; |
|
27 |
|
28 /** |
|
29 The maximum number of bytes in a nand flash main array |
|
30 @internalTechnology |
|
31 */ |
|
32 const TUint KCFNandMaxBytesMain = 512; |
|
33 |
|
34 /** |
|
35 An implementation of the CrashFlash interface for nand flash. |
|
36 @internalTechnology |
|
37 */ |
|
38 class CrashFlashNand : public CrashFlash |
|
39 { |
|
40 public: |
|
41 //From CrashFlash |
|
42 virtual TInt Initialise(); |
|
43 virtual void StartTransaction(); |
|
44 virtual void EndTransaction(); |
|
45 virtual void Write(const TDesC8& aDes); |
|
46 virtual void WriteSignature(const TDesC8& aDes); |
|
47 virtual void Read(TDes8& aDes); |
|
48 virtual void SetReadPos(TUint aPos); |
|
49 virtual void SetWritePos(const TUint aPos); |
|
50 virtual void EraseLogArea(); |
|
51 virtual void EraseFlashBlock(const TUint aBlock); |
|
52 virtual TUint BytesWritten(); |
|
53 #ifdef _CRASHLOG_COMPR |
|
54 virtual TUint GetOutputLimit(void); |
|
55 virtual TUint GetLogOffset(void); |
|
56 #endif |
|
57 |
|
58 public: |
|
59 /** @publishedPartner |
|
60 @released */ |
|
61 virtual TInt GetDeviceId(TUint8& aDeviceId, TUint8& aManufacturerId)=0; |
|
62 /** @publishedPartner |
|
63 @released */ |
|
64 virtual TInt DeviceRead(const TUint aPageAddress, TAny* aBuf, const TUint aLength)=0; |
|
65 /** @publishedPartner |
|
66 @released */ |
|
67 virtual TInt DeviceWrite(const TUint aPageAddress, TAny* aBuf, const TUint aLength)=0; |
|
68 /** @publishedPartner |
|
69 @released */ |
|
70 virtual TInt DeviceErase(const TUint aBlockAddress)=0; |
|
71 public: |
|
72 /** @publishedPartner |
|
73 @released */ |
|
74 TUint iNumPagesPerBlock; |
|
75 /** @publishedPartner |
|
76 @released */ |
|
77 TUint iNumBytesMain; |
|
78 /** @publishedPartner |
|
79 @released */ |
|
80 TUint iNumBytesSpare; |
|
81 /** @publishedPartner |
|
82 @released */ |
|
83 TUint iNumReservoirBlocks; |
|
84 /** @publishedPartner |
|
85 @released */ |
|
86 TUint iNumBlocks; |
|
87 /** @publishedPartner |
|
88 @released */ |
|
89 TUint iNumBytesPage; |
|
90 |
|
91 protected: |
|
92 /** @publishedPartner |
|
93 @released */ |
|
94 virtual TInt VariantInitialise()=0; |
|
95 |
|
96 private: |
|
97 TInt InitialiseFlashParameters(const TUint8 aDevId, const TUint8 aManId); |
|
98 TInt ReadPib(TPib& aPib, TPibExtension& aPibExtension, TUint& aLastGoodBlock); |
|
99 TInt ParsePib(TPib& aPib, TPibExtension& aPibExt); |
|
100 void DoWriteRead(); |
|
101 void DoWrite(); |
|
102 void DoRead(); |
|
103 private: |
|
104 TBool iIs16Bit; |
|
105 TUint8 iLogWordSize; |
|
106 |
|
107 TUint iCrashLogStartBlock; |
|
108 TUint iNumCrashLogBlocks; |
|
109 |
|
110 TUint iWriteBufIndex; |
|
111 TUint iReadBufIndex; |
|
112 TUint iWritePageIndex; |
|
113 TUint iReadPageIndex; |
|
114 TUint iWriteTotal; |
|
115 |
|
116 TUint8 iWriteBuf[KCFNandMaxBytesMain]; |
|
117 TUint8 iReadBuf[KCFNandMaxBytesMain]; |
|
118 }; |
|
119 |
|
120 #endif |