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Diffstat (limited to 'gnu-efi/gnu-efi-3.0/inc/efifs.h')
-rw-r--r-- | gnu-efi/gnu-efi-3.0/inc/efifs.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/gnu-efi/gnu-efi-3.0/inc/efifs.h b/gnu-efi/gnu-efi-3.0/inc/efifs.h new file mode 100644 index 0000000..fc595d1 --- /dev/null +++ b/gnu-efi/gnu-efi-3.0/inc/efifs.h @@ -0,0 +1,116 @@ +#ifndef _EFI_FS_H +#define _EFI_FS_H + +/*++ + +Copyright (c) 1998 Intel Corporation + +Module Name: + + efifs.h + +Abstract: + + EFI File System structures + + + +Revision History + +--*/ + + +// +// EFI Partition header (normaly starts in LBA 1) +// + +#define EFI_PARTITION_SIGNATURE 0x5053595320494249 +#define EFI_PARTITION_REVISION 0x00010001 +#define MIN_EFI_PARTITION_BLOCK_SIZE 512 +#define EFI_PARTITION_LBA 1 + +typedef struct _EFI_PARTITION_HEADER { + EFI_TABLE_HEADER Hdr; + UINT32 DirectoryAllocationNumber; + UINT32 BlockSize; + EFI_LBA FirstUsableLba; + EFI_LBA LastUsableLba; + EFI_LBA UnusableSpace; + EFI_LBA FreeSpace; + EFI_LBA RootFile; + EFI_LBA SecutiryFile; +} EFI_PARTITION_HEADER; + + +// +// File header +// + +#define EFI_FILE_HEADER_SIGNATURE 0x454c494620494249 +#define EFI_FILE_HEADER_REVISION 0x00010000 +#define EFI_FILE_STRING_SIZE 260 + +typedef struct _EFI_FILE_HEADER { + EFI_TABLE_HEADER Hdr; + UINT32 Class; + UINT32 LBALOffset; + EFI_LBA Parent; + UINT64 FileSize; + UINT64 FileAttributes; + EFI_TIME FileCreateTime; + EFI_TIME FileModificationTime; + EFI_GUID VendorGuid; + CHAR16 FileString[EFI_FILE_STRING_SIZE]; +} EFI_FILE_HEADER; + + +// +// Return the file's first LBAL which is in the same +// logical block as the file header +// + +#define EFI_FILE_LBAL(a) ((EFI_LBAL *) (((CHAR8 *) (a)) + (a)->LBALOffset)) + +#define EFI_FILE_CLASS_FREE_SPACE 1 +#define EFI_FILE_CLASS_EMPTY 2 +#define EFI_FILE_CLASS_NORMAL 3 + + +// +// Logical Block Address List - the fundemental block +// description structure +// + +#define EFI_LBAL_SIGNATURE 0x4c41424c20494249 +#define EFI_LBAL_REVISION 0x00010000 + +typedef struct _EFI_LBAL { + EFI_TABLE_HEADER Hdr; + UINT32 Class; + EFI_LBA Parent; + EFI_LBA Next; + UINT32 ArraySize; + UINT32 ArrayCount; +} EFI_LBAL; + +// Array size +#define EFI_LBAL_ARRAY_SIZE(lbal,offs,blks) \ + (((blks) - (offs) - (lbal)->Hdr.HeaderSize) / sizeof(EFI_RL)) + +// +// Logical Block run-length +// + +typedef struct { + EFI_LBA Start; + UINT64 Length; +} EFI_RL; + +// +// Return the run-length structure from an LBAL header +// + +#define EFI_LBAL_RL(a) ((EFI_RL*) (((CHAR8 *) (a)) + (a)->Hdr.HeaderSize)) + +#endif + |