4g08和1208的驱动代码差别

1:

4g08是,512mb?,= 4096块,??? 每块64页,每页2048字节+16*4空闲区域,

?1208是 64mb,=?,4096块,每块32 页,每页512字节+16字节空闲区域

2:

4G08 每每个page有4个sector,一个块有256个sector,

1208,每个page有1个sector,但是软件上把8个块看成一个块,也就说,软件上把一个块看成256sector

?if ( astNandSpec[dwPrimaryNandDevice].nSctsPerPg == 4 )?// Primary NAND is Large Block...
?{
??wPRIMARY_NAND_BLOCKS = wPRIMARY_REAL_NAND_BLOCKS;
?}
?else
?{
??wPRIMARY_NAND_BLOCKS = wPRIMARY_REAL_NAND_BLOCKS / 8;
?}

?

3页地址偏移:

DWORD?? dwStartPage = blockID <<5;//块地址乘以32

DWORD?? dwPageID = blockID << 6;;//块地址乘以64

?

4相同点:

?? 都是划分sector地址,一个sector地址有512字节,

? 每次都是读写512字节

?

5空闲区域:

4g08的空闲区域如下:

typedef struct _SectorInfo
{
??? DWORD dwReserved1;????????????? // Reserved - used by FAL???? //第5-8个字节
??? BYTE? bOEMReserved;???????????? // For use by OEM??? //第二个字节
??? BYTE? bBadBlock;???????????? // Indicates if block is BAD??? 第一个字节,
??? WORD? wReserved2;?????????????? // Reserved - used by FAL?? //第三和第四个字节
???
}SectorInfo,*PSectorInfo

???? wrdata = (DWORD)(pInfo->bBadBlock) | (((DWORD)(pInfo->bOEMReserved) << 8)&0x0000ff00) | (((DWORD)(pInfo->wReserved2) << 16)&0xffff0000);
???? NF_DATA_W4( wrdata );
???? NF_DATA_W4( pInfo->dwReserved1 );

?

128的空闲区域如下:

typedef struct _SectorInfo
{
??? DWORD dwReserved1;????????????? // Reserved - used by FAL???? //第1-4个字节
??? BYTE? bOEMReserved;???????????? // For use by OEM??? //第5个字节
??? BYTE? bBadBlock;???????????? // Indicates if block is BAD??? 第6个字节,
??? WORD? wReserved2;?????????????? // Reserved - used by FAL?? //第7和第8个字节
???
}SectorInfo,*PSectorInfo

?

??? pInfo->dwReserved1? = NF_DATA_R4();

??? //? OEM byte
??? pInfo->bOEMReserved = (BYTE) NF_DATA_R();

??? //? Read the bad block mark
??? pInfo->bBadBlock = (BYTE) NF_DATA_R();

??? //? Second reserved field (WORD)
??? pInfo->wReserved2 = ((BYTE) NF_DATA_R() << 8);
??? pInfo->wReserved2 |= ((BYTE) NF_DATA_R());

?附录:

?

typedef struct
{
	UINT16          nMID;           /* Manufacturer ID               */
	UINT16          nDID;           /* Device ID                     */

	UINT16          nNumOfBlks;     /* Number of Blocks              */
	UINT16          nPgsPerBlk;     /* Number of Pages per block     */
	UINT16          nSctsPerPg;     /* Number of Sectors per page    */
	UINT16          nNumOfPlanes;   /* Number of Planes              */
	UINT16          nBlksInRsv;     /* The Number of Blocks
									   in Reservior for Bad Blocks   */
	UINT8           nBadPos;        /* BadBlock Information Poisition*/
	UINT8           nLsnPos;        /* LSN Position                  */
	UINT8           nECCPos;        /* ECC Policy : HW_ECC,SW_ECC   */
	UINT16          nBWidth;        /* Nand Organization X8 or X16   */

	UINT16          nTrTime;        /* Typical Read Op Time          */
	UINT16          nTwTime;        /* Typical Write Op Time         */
	UINT16          nTeTime;        /* Typical Erase Op Time         */
	UINT16          nTfTime;        /* Typical Transfer Op Time      */
} S2440Spec;

static S2440Spec     astNandSpec[] = {
	/*************************************************************************/
	/* nMID,nDID,*/
	/*            nNumOfBlks                                                 */
	/*                  nPgsPerBlk                                           */
	/*                      nSctsPerPg                                       */
	/*                         nNumOfPlanes                                  */
	/*                            nBlksInRsv                                 */ 
	/*                                nBadPos                                */
	/*                                   nLsnPos                             */
	/*                                      nECCPos                          */
	/*                                         nBWidth                       */
	/*                                                nTrTime                */
	/*                                                    nTwTime            */
	/*                                                         nTeTime       */
	/*                                                                nTfTime*/
	/*************************************************************************/
	/* 8Gbit DDP NAND Flash */
	{ 0xEC,0xD3,8192,64,4,2,160,8,BW_X08,50,350,2000,50},/* 4Gbit DDP NAND Flash */
	{ 0xEC,0xAC,4096,80,{ 0xEC,0xDC,//{ 0xEC,0xBC,BW_X16,0xCC,/* 2Gbit NAND Flash */
	{ 0xEC,0xAA,2048,1,40,0xDA,0xBA,0xCA,/* 2Gbit DDP NAND Flash */
	{ 0xEC,/*1Gbit NAND Flash */
	{ 0xEC,0xA1,1024,20,0xF1,0xB1,0xC1,/* 1Gbit NAND Flash */	
	{ 0xEC,0x79,32,120,5,6,0x78,0x74,11,0x72,/* 512Mbit NAND Flash */
//1208参数:           总块数为4096 每块页数32

//                             每页sector数为1    总Planes 数:1,nBlksInRsv :4

	{ 0xEC,0x76,70,0x36,0x56,0x46,/* 256Mbit NAND Flash */   
	{ 0xEC,0x75,35,0x35,0x55,0x45,/* 128Mbit NAND Flash */
	{ 0xEC,0x73,0x33,0x53,0x43,{ 0x00,0x00,0}
};