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/* ----------------------------------------------------------------------------
* 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.
* ----------------------------------------------------------------------------
*/
//------------------------------------------------------------------------------
/// \page "NandSpareScheme"
///
/// !!!Purpose
///
/// NandSpareScheme layer is used to do Nandflash device's spare area operations. It is called by
/// upper layer drivers, such as SkipBlockNandFlash layer.
///
/// !!!Usage
///
/// -# NandSpareScheme_WriteBadBlockMarker is used to mark a badblock marker inside a spare
/// area.
/// -# NandSpareScheme_ReadBadBlockMarker is used to readout the marker.
/// -# NandSpareScheme_ReadEcc is used to read out ecc from spare area using the provided
/// spare scheme.
/// -# NandSpareScheme_WriteEcc is used to write ecc to spare area using the provided
/// spare scheme.
/// -# NandSpareScheme_ReadExtra is used to read extra bytes from spare area using the provided
/// spare scheme.
/// -# NandSpareScheme_WriteExtra is used to write extra bytes to spare area using the provided
/// spare scheme.
//------------------------------------------------------------------------------
#ifndef NANDSPARESCHEME_H
#define NANDSPARESCHEME_H
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "NandCommon.h"
//------------------------------------------------------------------------------
// Types
//------------------------------------------------------------------------------
struct NandSpareScheme {
unsigned char badBlockMarkerPosition;
unsigned char numEccBytes;
unsigned char eccBytesPositions[NandCommon_MAXSPAREECCBYTES];
unsigned char numExtraBytes;
unsigned char extraBytesPositions[NandCommon_MAXSPAREEXTRABYTES];
};
//------------------------------------------------------------------------------
// Exported variables
//------------------------------------------------------------------------------
extern const struct NandSpareScheme nandSpareScheme256;
extern const struct NandSpareScheme nandSpareScheme512;
extern const struct NandSpareScheme nandSpareScheme2048;
extern const struct NandSpareScheme nandSpareScheme4096;
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
extern void NandSpareScheme_ReadBadBlockMarker(
const struct NandSpareScheme *scheme,
const unsigned char *spare,
unsigned char *marker);
extern void NandSpareScheme_WriteBadBlockMarker(
const struct NandSpareScheme *scheme,
unsigned char *spare,
unsigned char marker);
extern void NandSpareScheme_ReadEcc(
const struct NandSpareScheme *scheme,
const unsigned char *spare,
unsigned char *ecc);
extern void NandSpareScheme_WriteEcc(
const struct NandSpareScheme *scheme,
unsigned char *spare,
const unsigned char *ecc);
extern void NandSpareScheme_ReadExtra(
const struct NandSpareScheme *scheme,
const unsigned char *spare,
void *extra,
unsigned char size,
unsigned char offset);
extern void NandSpareScheme_WriteExtra(
const struct NandSpareScheme *scheme,
unsigned char *spare,
const void *extra,
unsigned char size,
unsigned char offset);
#endif //#ifndef NANDSPARESCHEME_H
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