2024-01-07 23:57:24 +01:00
|
|
|
|
|
|
|
|
/* Defines for NAND Flash Translation Layer */
|
|
|
|
|
/* (c) 1999 Machine Vision Holdings, Inc. */
|
|
|
|
|
/* Author: David Woodhouse <dwmw2@mvhi.com> */
|
2024-01-08 00:07:02 +01:00
|
|
|
/* $Id: nftl.h,v 1.1.1.1 2008/12/15 11:39:22 wokes Exp $ */
|
2024-01-07 23:57:24 +01:00
|
|
|
|
|
|
|
|
#ifndef __MTD_NFTL_H__
|
|
|
|
|
#define __MTD_NFTL_H__
|
|
|
|
|
|
|
|
|
|
/* Block Control Information */
|
|
|
|
|
|
|
|
|
|
struct nftl_bci {
|
|
|
|
|
unsigned char ECCSig[6];
|
|
|
|
|
__u8 Status;
|
|
|
|
|
__u8 Status1;
|
|
|
|
|
}__attribute__((packed));
|
|
|
|
|
|
|
|
|
|
/* Unit Control Information */
|
|
|
|
|
|
|
|
|
|
struct nftl_uci0 {
|
|
|
|
|
__u16 VirtUnitNum;
|
|
|
|
|
__u16 ReplUnitNum;
|
|
|
|
|
__u16 SpareVirtUnitNum;
|
|
|
|
|
__u16 SpareReplUnitNum;
|
|
|
|
|
} __attribute__((packed));
|
|
|
|
|
|
|
|
|
|
struct nftl_uci1 {
|
|
|
|
|
__u32 WearInfo;
|
|
|
|
|
__u16 EraseMark;
|
|
|
|
|
__u16 EraseMark1;
|
|
|
|
|
} __attribute__((packed));
|
|
|
|
|
|
|
|
|
|
struct nftl_uci2 {
|
|
|
|
|
__u16 FoldMark;
|
|
|
|
|
__u16 FoldMark1;
|
|
|
|
|
__u32 unused;
|
|
|
|
|
} __attribute__((packed));
|
|
|
|
|
|
|
|
|
|
union nftl_uci {
|
|
|
|
|
struct nftl_uci0 a;
|
|
|
|
|
struct nftl_uci1 b;
|
|
|
|
|
struct nftl_uci2 c;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
struct nftl_oob {
|
|
|
|
|
struct nftl_bci b;
|
|
|
|
|
union nftl_uci u;
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
/* NFTL Media Header */
|
|
|
|
|
|
|
|
|
|
struct NFTLMediaHeader {
|
|
|
|
|
char DataOrgID[6];
|
|
|
|
|
__u16 NumEraseUnits;
|
|
|
|
|
__u16 FirstPhysicalEUN;
|
|
|
|
|
__u32 FormattedSize;
|
|
|
|
|
unsigned char UnitSizeFactor;
|
|
|
|
|
} __attribute__((packed));
|
|
|
|
|
|
|
|
|
|
#define MAX_ERASE_ZONES (8192 - 512)
|
|
|
|
|
|
|
|
|
|
#define ERASE_MARK 0x3c69
|
|
|
|
|
#define SECTOR_FREE 0xff
|
|
|
|
|
#define SECTOR_USED 0x55
|
|
|
|
|
#define SECTOR_IGNORE 0x11
|
|
|
|
|
#define SECTOR_DELETED 0x00
|
|
|
|
|
|
|
|
|
|
#define FOLD_MARK_IN_PROGRESS 0x5555
|
|
|
|
|
|
|
|
|
|
#define ZONE_GOOD 0xff
|
|
|
|
|
#define ZONE_BAD_ORIGINAL 0
|
|
|
|
|
#define ZONE_BAD_MARKED 7
|
|
|
|
|
|
|
|
|
|
/* these info are used in ReplUnitTable */
|
|
|
|
|
#define BLOCK_NIL 0xffff /* last block of a chain */
|
|
|
|
|
#define BLOCK_FREE 0xfffe /* free block */
|
|
|
|
|
#define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */
|
|
|
|
|
#define BLOCK_RESERVED 0xfffc /* bios block or bad block */
|
|
|
|
|
|
|
|
|
|
struct NFTLrecord {
|
|
|
|
|
struct DiskOnChip *mtd;
|
|
|
|
|
__u16 MediaUnit, SpareMediaUnit;
|
|
|
|
|
__u32 EraseSize;
|
|
|
|
|
struct NFTLMediaHeader MediaHdr;
|
|
|
|
|
int usecount;
|
|
|
|
|
unsigned char heads;
|
|
|
|
|
unsigned char sectors;
|
|
|
|
|
unsigned short cylinders;
|
|
|
|
|
__u16 numvunits;
|
|
|
|
|
__u16 lastEUN; /* should be suppressed */
|
|
|
|
|
__u16 numfreeEUNs;
|
|
|
|
|
__u16 LastFreeEUN; /* To speed up finding a free EUN */
|
|
|
|
|
__u32 nr_sects;
|
|
|
|
|
int head,sect,cyl;
|
|
|
|
|
__u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */
|
|
|
|
|
__u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */
|
|
|
|
|
unsigned int nb_blocks; /* number of physical blocks */
|
|
|
|
|
unsigned int nb_boot_blocks; /* number of blocks used by the bios */
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
#define MAX_NFTLS 16
|
|
|
|
|
#define MAX_SECTORS_PER_UNIT 32
|
|
|
|
|
#define NFTL_PARTN_BITS 4
|
|
|
|
|
|
|
|
|
|
#endif /* __MTD_NFTL_H__ */
|
