/*****************************************************************************
 *   nand.h:  definitions for nandflash
 *
 *   Copyright(C) 2007, uCdragon
 *   All rights reserved.
 *
 *   History
 *   2007.03.16  lqm@ucdragon.net
 *
******************************************************************************/
#ifndef _FLASH_H_
#define _FLASH_H_

#define NAND_SECTOR_SHIFT    9 
#define NAND_SECTOR_LEN      (1 << NAND_SECTOR_SHIFT)
#define NAND_SECTOR_MASK     (~(NAND_SECTOR_LEN -1))//32 sector per block
#define NAND_BLOCK_SHIFT     5
#define NAND_BLOCK_MASK      (~31)//32 sector per block

U32 NFEraseBlock( U32 addr );
void NFReadPage( U32 addr , U8* buf );
U32 NFWritePage( U32 addr , U8* buf );
int NandInit( void );
#endif