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Diffstat (limited to 'Core/MdeModulePkg/Include/Guid/VariableFormat.h')
| -rw-r--r-- | Core/MdeModulePkg/Include/Guid/VariableFormat.h | 226 |
1 files changed, 226 insertions, 0 deletions
diff --git a/Core/MdeModulePkg/Include/Guid/VariableFormat.h b/Core/MdeModulePkg/Include/Guid/VariableFormat.h new file mode 100644 index 0000000000..5fa75e6ca9 --- /dev/null +++ b/Core/MdeModulePkg/Include/Guid/VariableFormat.h @@ -0,0 +1,226 @@ +/** @file
+ The variable data structures are related to EDK II-specific implementation of UEFI variables.
+ VariableFormat.h defines variable data headers and variable storage region headers.
+
+Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials are licensed and made available under
+the terms and conditions of the BSD License that accompanies this distribution.
+The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php.
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef __VARIABLE_FORMAT_H__
+#define __VARIABLE_FORMAT_H__
+
+#define EFI_VARIABLE_GUID \
+ { 0xddcf3616, 0x3275, 0x4164, { 0x98, 0xb6, 0xfe, 0x85, 0x70, 0x7f, 0xfe, 0x7d } }
+
+#define EFI_AUTHENTICATED_VARIABLE_GUID \
+ { 0xaaf32c78, 0x947b, 0x439a, { 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92 } }
+
+extern EFI_GUID gEfiVariableGuid;
+extern EFI_GUID gEfiAuthenticatedVariableGuid;
+
+///
+/// Alignment of variable name and data, according to the architecture:
+/// * For IA-32 and Intel(R) 64 architectures: 1.
+/// * For IA-64 architecture: 8.
+///
+#if defined (MDE_CPU_IPF)
+#define ALIGNMENT 8
+#else
+#define ALIGNMENT 1
+#endif
+
+//
+// GET_PAD_SIZE calculates the miminal pad bytes needed to make the current pad size satisfy the alignment requirement.
+//
+#if (ALIGNMENT == 1)
+#define GET_PAD_SIZE(a) (0)
+#else
+#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))
+#endif
+
+///
+/// Alignment of Variable Data Header in Variable Store region.
+///
+#define HEADER_ALIGNMENT 4
+#define HEADER_ALIGN(Header) (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))
+
+///
+/// Status of Variable Store Region.
+///
+typedef enum {
+ EfiRaw,
+ EfiValid,
+ EfiInvalid,
+ EfiUnknown
+} VARIABLE_STORE_STATUS;
+
+#pragma pack(1)
+
+#define VARIABLE_STORE_SIGNATURE EFI_VARIABLE_GUID
+#define AUTHENTICATED_VARIABLE_STORE_SIGNATURE EFI_AUTHENTICATED_VARIABLE_GUID
+
+///
+/// Variable Store Header Format and State.
+///
+#define VARIABLE_STORE_FORMATTED 0x5a
+#define VARIABLE_STORE_HEALTHY 0xfe
+
+///
+/// Variable Store region header.
+///
+typedef struct {
+ ///
+ /// Variable store region signature.
+ ///
+ EFI_GUID Signature;
+ ///
+ /// Size of entire variable store,
+ /// including size of variable store header but not including the size of FvHeader.
+ ///
+ UINT32 Size;
+ ///
+ /// Variable region format state.
+ ///
+ UINT8 Format;
+ ///
+ /// Variable region healthy state.
+ ///
+ UINT8 State;
+ UINT16 Reserved;
+ UINT32 Reserved1;
+} VARIABLE_STORE_HEADER;
+
+///
+/// Variable data start flag.
+///
+#define VARIABLE_DATA 0x55AA
+
+///
+/// Variable State flags.
+///
+#define VAR_IN_DELETED_TRANSITION 0xfe ///< Variable is in obsolete transition.
+#define VAR_DELETED 0xfd ///< Variable is obsolete.
+#define VAR_HEADER_VALID_ONLY 0x7f ///< Variable header has been valid.
+#define VAR_ADDED 0x3f ///< Variable has been completely added.
+
+///
+/// Variable Attribute combinations.
+///
+#define VARIABLE_ATTRIBUTE_NV_BS (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS)
+#define VARIABLE_ATTRIBUTE_BS_RT (EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)
+#define VARIABLE_ATTRIBUTE_AT_AW (EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
+#define VARIABLE_ATTRIBUTE_NV_BS_RT (VARIABLE_ATTRIBUTE_BS_RT | EFI_VARIABLE_NON_VOLATILE)
+#define VARIABLE_ATTRIBUTE_NV_BS_RT_HR (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_HARDWARE_ERROR_RECORD)
+#define VARIABLE_ATTRIBUTE_NV_BS_RT_AT (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)
+#define VARIABLE_ATTRIBUTE_NV_BS_RT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)
+#define VARIABLE_ATTRIBUTE_NV_BS_RT_HR_AT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT_HR | VARIABLE_ATTRIBUTE_AT_AW)
+
+///
+/// Single Variable Data Header Structure.
+///
+typedef struct {
+ ///
+ /// Variable Data Start Flag.
+ ///
+ UINT16 StartId;
+ ///
+ /// Variable State defined above.
+ ///
+ UINT8 State;
+ UINT8 Reserved;
+ ///
+ /// Attributes of variable defined in UEFI specification.
+ ///
+ UINT32 Attributes;
+ ///
+ /// Size of variable null-terminated Unicode string name.
+ ///
+ UINT32 NameSize;
+ ///
+ /// Size of the variable data without this header.
+ ///
+ UINT32 DataSize;
+ ///
+ /// A unique identifier for the vendor that produces and consumes this varaible.
+ ///
+ EFI_GUID VendorGuid;
+} VARIABLE_HEADER;
+
+///
+/// Single Authenticated Variable Data Header Structure.
+///
+typedef struct {
+ ///
+ /// Variable Data Start Flag.
+ ///
+ UINT16 StartId;
+ ///
+ /// Variable State defined above.
+ ///
+ UINT8 State;
+ UINT8 Reserved;
+ ///
+ /// Attributes of variable defined in UEFI specification.
+ ///
+ UINT32 Attributes;
+ ///
+ /// Associated monotonic count value against replay attack.
+ ///
+ UINT64 MonotonicCount;
+ ///
+ /// Associated TimeStamp value against replay attack.
+ ///
+ EFI_TIME TimeStamp;
+ ///
+ /// Index of associated public key in database.
+ ///
+ UINT32 PubKeyIndex;
+ ///
+ /// Size of variable null-terminated Unicode string name.
+ ///
+ UINT32 NameSize;
+ ///
+ /// Size of the variable data without this header.
+ ///
+ UINT32 DataSize;
+ ///
+ /// A unique identifier for the vendor that produces and consumes this varaible.
+ ///
+ EFI_GUID VendorGuid;
+} AUTHENTICATED_VARIABLE_HEADER;
+
+typedef struct {
+ EFI_GUID *Guid;
+ CHAR16 *Name;
+ UINTN VariableSize;
+} VARIABLE_ENTRY_CONSISTENCY;
+
+#pragma pack()
+
+typedef struct _VARIABLE_INFO_ENTRY VARIABLE_INFO_ENTRY;
+
+///
+/// This structure contains the variable list that is put in EFI system table.
+/// The variable driver collects all variables that were used at boot service time and produces this list.
+/// This is an optional feature to dump all used variables in shell environment.
+///
+struct _VARIABLE_INFO_ENTRY {
+ VARIABLE_INFO_ENTRY *Next; ///< Pointer to next entry.
+ EFI_GUID VendorGuid; ///< Guid of Variable.
+ CHAR16 *Name; ///< Name of Variable.
+ UINT32 Attributes; ///< Attributes of variable defined in UEFI specification.
+ UINT32 ReadCount; ///< Number of times to read this variable.
+ UINT32 WriteCount; ///< Number of times to write this variable.
+ UINT32 DeleteCount; ///< Number of times to delete this variable.
+ UINT32 CacheCount; ///< Number of times that cache hits this variable.
+ BOOLEAN Volatile; ///< TRUE if volatile, FALSE if non-volatile.
+};
+
+#endif // _EFI_VARIABLE_H_
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