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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 "ManagedNandFlash"
///
/// !!!Purpose
///
/// The lower layer of nandflash block management, it is called by MappedNandFlash layer, and
/// it will call EccNandFlash layer.
//------------------------------------------------------------------------------
#ifndef MANAGEDNANDFLASH_H
#define MANAGEDNANDFLASH_H
//------------------------------------------------------------------------------
// Headers
//------------------------------------------------------------------------------
#include "NandCommon.h"
#include "EccNandFlash.h"
//------------------------------------------------------------------------------
// Definitions
//------------------------------------------------------------------------------
#define NandBlockStatus_DEFAULT 0xF
#define NandBlockStatus_FREE 0xE
#define NandBlockStatus_LIVE 0xC
#define NandBlockStatus_DIRTY 0x8
#define NandBlockStatus_BAD 0x0
#define NandEraseDIRTY 0 // Erase dirty blocks only
#define NandEraseDATA 1 // Erase all data, calculate count
#define NandEraseFULL 2 // Erase all, reset erase count
//------------------------------------------------------------------------------
// Types
//------------------------------------------------------------------------------
struct NandBlockStatus {
unsigned int status:4,
eraseCount:28;
};
struct ManagedNandFlash {
struct EccNandFlash ecc;
struct NandBlockStatus blockStatuses[NandCommon_MAXNUMBLOCKS];
unsigned short baseBlock;
unsigned short sizeInBlocks;
};
//------------------------------------------------------------------------------
// Exported functions
//------------------------------------------------------------------------------
extern unsigned char ManagedNandFlash_Initialize(
struct ManagedNandFlash *managed,
const struct NandFlashModel *model,
unsigned int commandAddress,
unsigned int addressAddress,
unsigned int dataAddress,
const Pin pinChipEnable,
const Pin pinReadyBusy,
unsigned short baseBlock,
unsigned short sizeInBlocks);
extern unsigned char ManagedNandFlash_AllocateBlock(
struct ManagedNandFlash *managed,
unsigned short block);
extern unsigned char ManagedNandFlash_ReleaseBlock(
struct ManagedNandFlash *managed,
unsigned short block);
extern unsigned char ManagedNandFlash_EraseBlock(
struct ManagedNandFlash *managed,
unsigned short block);
extern unsigned char ManagedNandFlash_ReadPage(
const struct ManagedNandFlash *managed,
unsigned short block,
unsigned short page,
void *data,
void *spare);
extern unsigned char ManagedNandFlash_WritePage(
const struct ManagedNandFlash *managed,
unsigned short block,
unsigned short page,
void *data,
void *spare);
extern unsigned char ManagedNandFlash_CopyPage(
const struct ManagedNandFlash *managed,
unsigned short sourceBlock,
unsigned short sourcePage,
unsigned short destBlock,
unsigned short destPage);
extern unsigned char ManagedNandFlash_CopyBlock(
const struct ManagedNandFlash *managed,
unsigned short sourceBlock,
unsigned short destBlock);
extern unsigned char ManagedNandFlash_EraseDirtyBlocks(
struct ManagedNandFlash *managed);
extern unsigned char ManagedNandFlash_FindYoungestBlock(
const struct ManagedNandFlash *managed,
unsigned char status,
unsigned short *block);
extern unsigned short ManagedNandFlash_CountBlocks(
const struct ManagedNandFlash *managed,
unsigned char status);
extern unsigned short ManagedNandFlash_GetDeviceSizeInBlocks(
const struct ManagedNandFlash *managed);
extern unsigned char ManagedNandFlash_EraseAll(
struct ManagedNandFlash *managed,
unsigned char level);
#endif //#ifndef MANAGEDNANDFLASH_H
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