_EFI_BTT_FLOG Struct Reference

Data Fields
UINT32	Lba0
UINT32	OldMap0
UINT32	NewMap0
UINT32	Seq0
UINT32	Lba1
UINT32	OldMap1
UINT32	NewMap1
UINT32	Seq1

Detailed Description

The BTT Flog is both a free list and a log. The Flog size is determined by the EFI_BTT_INFO_BLOCK.NFree which determines how many of these flog entries there are. The Flog location is the highest aligned address in the arena after space for the backup info block.

Field Documentation

UINT32 _EFI_BTT_FLOG::Lba0

Last pre-map LBA written using this flog entry.

UINT32 _EFI_BTT_FLOG::Lba1

Alternate lba entry.

UINT32 _EFI_BTT_FLOG::NewMap0

New post-map LBA.

UINT32 _EFI_BTT_FLOG::NewMap1

Alternate new entry.

UINT32 _EFI_BTT_FLOG::OldMap0

Old post-map LBA.

UINT32 _EFI_BTT_FLOG::OldMap1

Alternate old entry.

UINT32 _EFI_BTT_FLOG::Seq0

The Seq0 field in each flog entry is used to determine which set of fields is newer between the two sets (Lba0, OldMap0, NewMpa0, Seq0 vs Lba1, Oldmap1, NewMap1, Seq1).

UINT32 _EFI_BTT_FLOG::Seq1

Alternate Seq entry.