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_