projects / u-boot.git / blame
| Commit | Line | Data |
|---|---|---|
| a1e329b4 WD |
1 | |
| 2 | /* Defines for NAND Flash Translation Layer */ | |
| 3 | /* (c) 1999 Machine Vision Holdings, Inc. */ | |
| 4 | /* Author: David Woodhouse <[email protected]> */ | |
| 5 | /* $Id: nftl.h,v 1.10 2000/12/29 00:25:38 dwmw2 Exp $ */ | |
| 6 | ||
| 7 | #ifndef __MTD_NFTL_H__ | |
| 8 | #define __MTD_NFTL_H__ | |
| 9 | ||
| 10 | /* Block Control Information */ | |
| 11 | ||
| 12 | struct nftl_bci { | |
| 13 | unsigned char ECCSig[6]; | |
| 14 | __u8 Status; | |
| 15 | __u8 Status1; | |
| 16 | }__attribute__((packed)); | |
| 17 | ||
| 18 | /* Unit Control Information */ | |
| 19 | ||
| 20 | struct nftl_uci0 { | |
| 21 | __u16 VirtUnitNum; | |
| 22 | __u16 ReplUnitNum; | |
| 23 | __u16 SpareVirtUnitNum; | |
| 24 | __u16 SpareReplUnitNum; | |
| 25 | } __attribute__((packed)); | |
| 26 | ||
| 27 | struct nftl_uci1 { | |
| 28 | __u32 WearInfo; | |
| 29 | __u16 EraseMark; | |
| 30 | __u16 EraseMark1; | |
| 31 | } __attribute__((packed)); | |
| 32 | ||
| 33 | struct nftl_uci2 { | |
| 34 | __u16 FoldMark; | |
| 35 | __u16 FoldMark1; | |
| 36 | __u32 unused; | |
| 37 | } __attribute__((packed)); | |
| 38 | ||
| 39 | union nftl_uci { | |
| 40 | struct nftl_uci0 a; | |
| 41 | struct nftl_uci1 b; | |
| 42 | struct nftl_uci2 c; | |
| 43 | }; | |
| 44 | ||
| 45 | struct nftl_oob { | |
| 46 | struct nftl_bci b; | |
| 47 | union nftl_uci u; | |
| 48 | }; | |
| 49 | ||
| 50 | /* NFTL Media Header */ | |
| 51 | ||
| 52 | struct NFTLMediaHeader { | |
| 53 | char DataOrgID[6]; | |
| 54 | __u16 NumEraseUnits; | |
| 55 | __u16 FirstPhysicalEUN; | |
| 56 | __u32 FormattedSize; | |
| 57 | unsigned char UnitSizeFactor; | |
| 58 | } __attribute__((packed)); | |
| 59 | ||
| 60 | #define MAX_ERASE_ZONES (8192 - 512) | |
| 61 | ||
| 62 | #define ERASE_MARK 0x3c69 | |
| 63 | #define SECTOR_FREE 0xff | |
| 64 | #define SECTOR_USED 0x55 | |
| 65 | #define SECTOR_IGNORE 0x11 | |
| 66 | #define SECTOR_DELETED 0x00 | |
| 67 | ||
| 68 | #define FOLD_MARK_IN_PROGRESS 0x5555 | |
| 69 | ||
| 70 | #define ZONE_GOOD 0xff | |
| 71 | #define ZONE_BAD_ORIGINAL 0 | |
| 72 | #define ZONE_BAD_MARKED 7 | |
| 73 | ||
| 74 | /* these info are used in ReplUnitTable */ | |
| 75 | #define BLOCK_NIL 0xffff /* last block of a chain */ | |
| 76 | #define BLOCK_FREE 0xfffe /* free block */ | |
| 77 | #define BLOCK_NOTEXPLORED 0xfffd /* non explored block, only used during mounting */ | |
| 78 | #define BLOCK_RESERVED 0xfffc /* bios block or bad block */ | |
| 79 | ||
| 80 | struct NFTLrecord { | |
| 81 | struct DiskOnChip *mtd; | |
| 82 | __u16 MediaUnit, SpareMediaUnit; | |
| 83 | __u32 EraseSize; | |
| 84 | struct NFTLMediaHeader MediaHdr; | |
| 85 | int usecount; | |
| 86 | unsigned char heads; | |
| 87 | unsigned char sectors; | |
| 88 | unsigned short cylinders; | |
| 89 | __u16 numvunits; | |
| 90 | __u16 lastEUN; /* should be suppressed */ | |
| 91 | __u16 numfreeEUNs; | |
| 92 | __u16 LastFreeEUN; /* To speed up finding a free EUN */ | |
| 592c5cab | 93 | __u32 nr_sects; |
| a1e329b4 WD |
94 | int head,sect,cyl; |
| 95 | __u16 *EUNtable; /* [numvunits]: First EUN for each virtual unit */ | |
| 96 | __u16 *ReplUnitTable; /* [numEUNs]: ReplUnitNumber for each */ | |
| 97 | unsigned int nb_blocks; /* number of physical blocks */ | |
| 98 | unsigned int nb_boot_blocks; /* number of blocks used by the bios */ | |
| 99 | }; | |
| 100 | ||
| 101 | #define MAX_NFTLS 16 | |
| 102 | #define MAX_SECTORS_PER_UNIT 32 | |
| 103 | #define NFTL_PARTN_BITS 4 | |
| 104 | ||
| 105 | #endif /* __MTD_NFTL_H__ */ |