Btt.h

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#ifndef _BTT_H_
#define _BTT_H_
 
#define EFI_BTT_ABSTRACTION_GUID \
  { \
    0x18633bfc, 0x1735, 0x4217, { 0x8a, 0xc9, 0x17, 0x23, 0x92, 0x82, 0xd3, 0xf8 } \
  }
 
//
// Alignment of all BTT structures
//
#define EFI_BTT_ALIGNMENT  4096
 
#define EFI_BTT_INFO_UNUSED_LEN  3968
 
#define EFI_BTT_INFO_BLOCK_SIG_LEN  16
 
#define EFI_BTT_INFO_BLOCK_FLAGS_ERROR  0x00000001
 
#define EFI_BTT_INFO_BLOCK_MAJOR_VERSION  2
#define EFI_BTT_INFO_BLOCK_MINOR_VERSION  0
 
typedef struct _EFI_BTT_INFO_BLOCK {
  CHAR8     Sig[EFI_BTT_INFO_BLOCK_SIG_LEN];
 
  GUID      Uuid;
 
  GUID      ParentUuid;
 
  UINT32    Flags;
 
  UINT16    Major;
 
  UINT16    Minor;
 
  UINT32    ExternalLbaSize;
 
  UINT32    ExternalNLba;
 
  UINT32    InternalLbaSize;
 
  UINT32    InternalNLba;
 
  UINT32    NFree;
 
  UINT32    InfoSize;
 
  UINT64    NextOff;
 
  UINT64    DataOff;
 
  UINT64    MapOff;
 
  UINT64    FlogOff;
 
  UINT64    InfoOff;
 
  CHAR8     Unused[EFI_BTT_INFO_UNUSED_LEN];
 
  UINT64    Checksum;
} EFI_BTT_INFO_BLOCK;
 
typedef struct _EFI_BTT_MAP_ENTRY {
  UINT32    PostMapLba : 30;
 
  UINT32    Error      : 1;
 
  UINT32    Zero       : 1;
} EFI_BTT_MAP_ENTRY;
 
#define EFI_BTT_FLOG_ENTRY_ALIGNMENT  64
 
typedef struct _EFI_BTT_FLOG {
  UINT32    Lba0;
 
  UINT32    OldMap0;
 
  UINT32    NewMap0;
 
  UINT32    Seq0;
 
  UINT32    Lba1;
 
  UINT32    OldMap1;
 
  UINT32    NewMap1;
 
  UINT32    Seq1;
} EFI_BTT_FLOG;
 
extern GUID  gEfiBttAbstractionGuid;
 
#endif //_BTT_H_