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Add workaround for Lenovo large files inside FFSv2 volumes

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This commit is contained in:
Nikolaj Schlej 2022-10-07 14:40:20 +02:00
parent ad8a841f43
commit acc913769b
3 changed files with 43 additions and 31 deletions
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36
common/ffs.h
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@ -280,11 +280,22 @@ EFI_GUID Name;
EFI_FFS_INTEGRITY_CHECK IntegrityCheck;
UINT8 Type;
UINT8 Attributes;
UINT8 Size[3]; // Set to 0xFFFFFF
UINT8 Size[3]; // Set to 0xFFFFFF or 0x000000
UINT8 State;
UINT64 ExtendedSize;
} EFI_FFS_FILE_HEADER2;
// Lenovo large file header
typedef struct EFI_FFS_FILE_HEADER_LENOVO_ {
EFI_GUID Name;
EFI_FFS_INTEGRITY_CHECK IntegrityCheck;
UINT8 Type;
UINT8 Attributes;
UINT8 Size[3]; // Set to 0x000000
UINT8 State;
UINT32 ExtendedSize;
} EFI_FFS_FILE_HEADER2_LENOVO;
// Standard data checksum, used if FFS_ATTRIB_CHECKSUM is clear
#define FFS_FIXED_CHECKSUM 0x5A
#define FFS_FIXED_CHECKSUM2 0xAA
@ -317,8 +328,8 @@ UINT64 ExtendedSize;
// File attributes
#define FFS_ATTRIB_TAIL_PRESENT 0x01 // Valid only for revision 1 volumes
#define FFS_ATTRIB_RECOVERY 0x02 // Valid only for revision 1 volumes
#define FFS_ATTRIB_LARGE_FILE 0x01 // Valid only for FFSv3 volumes
#define FFS_ATTRIB_DATA_ALIGNMENT2 0x02 // Volaid only for revision 2 volumes, added in UEFI PI 1.6
#define FFS_ATTRIB_LARGE_FILE 0x01 // Valid only for FFSv3 volumes or FFSv2 volumes with Lenovo large files
#define FFS_ATTRIB_DATA_ALIGNMENT2 0x02 // Valid only for revision 2 volumes, added in UEFI PI 1.6
#define FFS_ATTRIB_FIXED 0x04
#define FFS_ATTRIB_DATA_ALIGNMENT 0x38
#define FFS_ATTRIB_CHECKSUM 0x40
@ -377,13 +388,6 @@ typedef struct EFI_COMMON_SECTION_HEADER2_ {
UINT32 ExtendedSize;
} EFI_COMMON_SECTION_HEADER2;
// Apple common section header
typedef struct EFI_COMMON_SECTION_HEADER_APPLE {
UINT8 Size[3];
UINT8 Type;
UINT32 Reserved; // Must be 0x7FFF for this header to be used
} EFI_COMMON_SECTION_HEADER_APPLE;
// Section2 usage indicator
#define EFI_SECTION2_IS_USED 0xFFFFFF
@ -417,11 +421,6 @@ typedef struct EFI_COMPRESSION_SECTION_ {
UINT8 CompressionType;
} EFI_COMPRESSION_SECTION;
typedef struct EFI_COMPRESSION_SECTION_APPLE_ {
UINT32 UncompressedLength;
UINT32 CompressionType;
} EFI_COMPRESSION_SECTION_APPLE;
// Compression types
#define EFI_NOT_COMPRESSED 0x00
#define EFI_STANDARD_COMPRESSION 0x01
@ -435,13 +434,6 @@ typedef struct EFI_GUID_DEFINED_SECTION_ {
UINT16 Attributes;
} EFI_GUID_DEFINED_SECTION;
typedef struct EFI_GUID_DEFINED_SECTION_APPLE_ {
EFI_GUID SectionDefinitionGuid;
UINT16 DataOffset;
UINT16 Attributes;
UINT32 Reserved;
} EFI_GUID_DEFINED_SECTION_APPLE;
// Attributes for GUID defined section
#define EFI_GUIDED_SECTION_PROCESSING_REQUIRED 0x01
#define EFI_GUIDED_SECTION_AUTH_STATUS_VALID 0x02