1 // Copyright (c) 1998-2009 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 // bootldr\inc\ymodem.h

    15 // 

    16 //

    17 

    18 #ifndef __YMODEM_H__

    19 #define __YMODEM_H__

    20 

    21 #ifndef __KERNEL_MODE__

    22 #include <e32base.h>

    23 typedef CBase BASE;

    24 //#else

    25 //#include <kernel/kernel.h>

    26 //typedef DBase BASE;

    27 #endif

    28 

    29 const TUint8 SOH=0x01;

    30 const TUint8 STX=0x02;

    31 const TUint8 EOT=0x04;

    32 const TUint8 ACK=0x06;

    33 const TUint8 NAK=0x15;

    34 const TUint8 CAN=0x18;

    35 const TUint8 SUB=0x1A;

    36 const TUint8 BIGC=0x43;

    37 const TUint8 BIGG=0x47;

    38 

    39 const TInt KErrZeroLengthPacket=-200;

    40 const TInt KErrPacketTooShort=-201;

    41 const TInt KErrBadPacketType=-202;

    42 const TInt KErrCorruptSequenceNumber=-203;

    43 const TInt KErrWrongSequenceNumber=-204;

    44 const TInt KErrBadCrc=-205;

    45 const TInt KErrBadTerminationPacket=-206;

    46 

    47 const TInt KHeaderBufferSize=1024; 

    48 

    49 class YModem : public BASE

    50 	{

    51 public:

    52 	TInt StartDownload(TBool aG, TInt& aLength, TDes& aName);

    53 	TInt ReadPackets(TUint8*& aDest, TInt aLength);

    54 	

    55 	// Support to deflated ROM Image

    56 	TInt GetInnerCompression(TBool &aImageDeflated, TBool &aRomLoaderHeaderExists);

    57 	TInt GetHeaderBufferContent(TUint8*& aDest, TInt& aLength);

    58 	TBool IsHeaderStored(void);

    59 protected:

    60 	YModem(TBool aG);

    61 	void UpdateCrc(const TUint8* aPtr, TInt aLength);

    62 	TInt CheckPacket(TUint8* aDest);

    63 	TInt ReadPacket(TDes8& aDest);

    64 	virtual TInt ReadBlock(TDes8& aDest)=0;

    65 	virtual void WriteC(TUint aChar)=0;

    66 protected:

    67 	TInt iTimeout;

    68 	TInt iState;

    69 	TInt iPacketSize;

    70 	TInt iBlockSize;

    71 	TUint8 iInitChar;

    72 	TUint8 iSeqNum;

    73 	TUint16 iCrc;

    74 	TInt iFileSize;

    75 	TBuf8<1040> iPacketBuf;

    76 	TBuf<256> iFileName;

    77     

    78     // Support to deflated ROM Image

    79 	TBuf8<KHeaderBufferSize> iHeaderBuf;

    80     TBool iHeaderStored;

    81     TInt iDataSizeInPuffer;

    82     TBool iImageDeflated;

    83 	};

    84 

    85 #endif