nand.h

2440超级bios（ads1.2 rvds2.2）通用

#ifndef __NAND_H__
#define __NAND_H__

#define NUM_BLOCKS			0x1000       // 64 MB Smartmedia card.
#define SECTOR_SIZE         512
#define SPARE_SIZE          16
#define PAGES_PER_BLOCK     32

// For flash chip that is bigger than 32 MB, we need to have 4 step address
#define NFCONF_INIT         0xF830		// 512-byte 4 Step Address
#define NEED_EXT_ADDR       1
//#define NFCONF_INIT		0xA830		// 256-byte 4 Step Address
//#define NEED_EXT_ADDR		0

//#define NFCONF_INIT       0xF840

// NAND Flash Command. This appears to be generic across all NAND flash chips
#define CMD_READ0           0x00        // Read
#define CMD_READ1           0x01        // Read1
#define CMD_READ2           0x50        // Read2
#define CMD_READID          0x90        // ReadID
#define CMD_WRITE0          0x80        // Write phase 1
#define CMD_WRITE1          0x10        // Write phase 2
#define CMD_ERASE0          0x60        // Erase phase 1
#define CMD_ERASE1          0xd0        // Erase phase 2
#define CMD_STATUS          0x70        // Status read
#define CMD_RESET           0xff        // Reset

// Status bit pattern
#define STATUS_READY        0x40        // Ready
#define STATUS_ERROR        0x01        // Error

#define BADBLKMARK	        0x44

typedef DWORD  SECTOR_ADDR;
typedef PDWORD PSECTOR_ADDR;

#define	pNFCONF				rNFCONF
#define pNFCMD				rNFCMD
#define pNFADDR				rNFADDR
#define pNFDATA				rNFDATA
#define pNFSTAT				rNFSTAT
#define pNFECC				rNFECC0

#define NF_CE_L()			NF_nFCE_L()
#define NF_CE_H()			NF_nFCE_H()
#define NF_DATA_R()			rNFDATA
#define NF_ECC()			rNFECC0

typedef struct _SectorInfo
{
	DWORD dwReserved1;				// Reserved - used by FAL
	BYTE  bOEMReserved;				// For use by OEM
	BYTE  bBadBlock;				// Indicates if block is BAD
	WORD  wReserved2;				// Reserved - used by FAL
}SectorInfo, *PSectorInfo;
    
#define SECTOR_TO_BLOCK(sector) ((sector) >> 5)
#define BLOCK_TO_SECTOR(block)  ((block)  << 5)

// ERROR_Xxx
#define ERR_SUCCESS               	0
#define ERR_DISK_OP_FAIL1         	1
#define ERR_DISK_OP_FAIL2         	2
#define ERR_INVALID_BOOT_SECTOR   	3
#define ERR_INVALID_LOAD_ADDR     	4
#define ERR_GEN_FAILURE           	5
#define ERR_INVALID_PARAMETER     	6
#define ERR_JUMP_FAILED           	7
#define ERR_INVALID_TOC           	8
#define ERR_INVALID_FILE_TYPE     	9

BOOL FMD_ReadSector(SECTOR_ADDR startSectorAddr,LPBYTE pSectorBuff,PSectorInfo pSectorInfoBuff,DWORD dwNumSectors);

#ifdef READ_SECTOR_INFO
	void NAND_ReadSectorInfo(SECTOR_ADDR sectorAddr,PSectorInfo pInfo);
#endif

// HCLK=133Mhz
#define TACLS		0
#define TWRPH0		6
#define TWRPH1		0

void __RdPage512(UCHAR *bufPt); 
void __RdPage256(UCHAR *bufPt); 
void NF_reset(void);
void NF_init(void);

void NF_ReadID(void);

typedef struct ROMHDR
{
    ULONG   dllfirst;				// first DLL address
    ULONG   dlllast;                // last DLL address
    ULONG   physfirst;              // first physical address
    ULONG   physlast;               // highest physical address
    ULONG   nummods;                // number of TOCentry's
    ULONG   ulRAMStart;             // start of RAM
    ULONG   ulRAMFree;              // start of RAM free space
    ULONG   ulRAMEnd;               // end of RAM
    ULONG   ulCopyEntries;          // number of copy section entries
    ULONG   ulCopyOffset;           // offset to copy section
    ULONG   ulProfileLen;           // length of PROFentries RAM 
    ULONG   ulProfileOffset;        // offset to PROFentries
    ULONG   numfiles;               // number of FILES
    ULONG   ulKernelFlags;          // optional kernel flags from ROMFLAGS .bib config option
    ULONG   ulFSRamPercent;         // Percentage of RAM used for filesystem 
                                    // from FSRAMPERCENT .bib config option
                                    // byte 0 = #4K chunks/Mbyte of RAM for filesystem 0-2Mbytes 0-255
                                    // byte 1 = #4K chunks/Mbyte of RAM for filesystem 2-4Mbytes 0-255
                                    // byte 2 = #4K chunks/Mbyte of RAM for filesystem 4-6Mbytes 0-255
                                    // byte 3 = #4K chunks/Mbyte of RAM for filesystem > 6Mbytes 0-255
    ULONG   ulDrivglobStart;        // device driver global starting address
    ULONG   ulDrivglobLen;          // device driver global length
    USHORT  usCPUType;              // CPU (machine) Type
    USHORT  usMiscFlags;            // Miscellaneous flags
    PVOID   pExtensions;            // pointer to ROM Header extensions
    ULONG   ulTrackingStart;        // tracking memory starting address
    ULONG   ulTrackingLen;          // tracking memory ending address
} ROMHDR, *PROMHDR;

#define NF_CMD(cmd)				{rNFCMD  = (cmd); }
#define NF_ADDR(addr)			{rNFADDR = (addr); }	
#define NF_nFCE_L()	    		{rNFCONT &= ~(1<<1); }
#define NF_nFCE_H()	    		{rNFCONT |= (1<<1); }
#define NF_RSTECC()	    		{rNFCONT |= (1<<4); }
#define NF_RDDATA() 			(rNFDATA)
#define NF_WRDATA(data) 		{rNFDATA = (data); }
#define NF_WAITRB()     		{while(!(rNFSTAT&(1<<0)));} 
#define NF_CLEAR_RB()			{rNFSTAT |= (1<<2); }
#define NF_DETECT_RB()			{while(!(rNFSTAT&(1<<2)));}
#define NF_MECC_UnLock()		{rNFCONT &= ~(1<<5);}
#define NF_MECC_Lock()			{rNFCONT |= (1<<5);}


typedef union _ECCRegVal
{
	DWORD	dwECCVal;
	BYTE	bECCBuf[4];
} ECCRegVal;

#endif //__NAND_H__