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124 lines
3.9 KiB
C
124 lines
3.9 KiB
C
/** @file
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The file defined some common structures used for communicating between SMM variable module and SMM variable wrapper module.
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Copyright (c) 2011 - 2015, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#ifndef _SMM_VARIABLE_COMMON_H_
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#define _SMM_VARIABLE_COMMON_H_
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#include <Protocol/VarCheck.h>
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#define EFI_SMM_VARIABLE_WRITE_GUID \
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{ 0x93ba1826, 0xdffb, 0x45dd, { 0x82, 0xa7, 0xe7, 0xdc, 0xaa, 0x3b, 0xbd, 0xf3 } }
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extern EFI_GUID gSmmVariableWriteGuid;
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//
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// This structure is used for SMM variable. the collected statistics data is saved in SMRAM. It can be got from
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// SMI handler. The communication buffer should be:
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// EFI_SMM_COMMUNICATE_HEADER + SMM_VARIABLE_COMMUNICATE_HEADER + payload.
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//
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typedef struct {
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UINTN Function;
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EFI_STATUS ReturnStatus;
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UINT8 Data[1];
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} SMM_VARIABLE_COMMUNICATE_HEADER;
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//
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// The payload for this function is SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE.
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//
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#define SMM_VARIABLE_FUNCTION_GET_VARIABLE 1
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//
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// The payload for this function is SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME.
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//
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#define SMM_VARIABLE_FUNCTION_GET_NEXT_VARIABLE_NAME 2
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//
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// The payload for this function is SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE.
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//
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#define SMM_VARIABLE_FUNCTION_SET_VARIABLE 3
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//
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// The payload for this function is SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO.
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//
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#define SMM_VARIABLE_FUNCTION_QUERY_VARIABLE_INFO 4
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//
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// It is a notify event, no extra payload for this function.
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//
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#define SMM_VARIABLE_FUNCTION_READY_TO_BOOT 5
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//
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// It is a notify event, no extra payload for this function.
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//
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#define SMM_VARIABLE_FUNCTION_EXIT_BOOT_SERVICE 6
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//
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// The payload for this function is VARIABLE_INFO_ENTRY. The GUID in EFI_SMM_COMMUNICATE_HEADER
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// is gEfiSmmVariableProtocolGuid.
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//
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#define SMM_VARIABLE_FUNCTION_GET_STATISTICS 7
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//
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// The payload for this function is SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE
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//
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#define SMM_VARIABLE_FUNCTION_LOCK_VARIABLE 8
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#define SMM_VARIABLE_FUNCTION_VAR_CHECK_VARIABLE_PROPERTY_SET 9
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#define SMM_VARIABLE_FUNCTION_VAR_CHECK_VARIABLE_PROPERTY_GET 10
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#define SMM_VARIABLE_FUNCTION_GET_PAYLOAD_SIZE 11
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///
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/// Size of SMM communicate header, without including the payload.
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///
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#define SMM_COMMUNICATE_HEADER_SIZE (OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data))
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///
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/// Size of SMM variable communicate header, without including the payload.
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///
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#define SMM_VARIABLE_COMMUNICATE_HEADER_SIZE (OFFSET_OF (SMM_VARIABLE_COMMUNICATE_HEADER, Data))
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///
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/// This structure is used to communicate with SMI handler by SetVariable and GetVariable.
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///
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typedef struct {
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EFI_GUID Guid;
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UINTN DataSize;
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UINTN NameSize;
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UINT32 Attributes;
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CHAR16 Name[1];
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} SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE;
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///
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/// This structure is used to communicate with SMI handler by GetNextVariableName.
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///
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typedef struct {
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EFI_GUID Guid;
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UINTN NameSize; // Return name buffer size
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CHAR16 Name[1];
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} SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME;
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///
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/// This structure is used to communicate with SMI handler by QueryVariableInfo.
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///
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typedef struct {
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UINT64 MaximumVariableStorageSize;
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UINT64 RemainingVariableStorageSize;
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UINT64 MaximumVariableSize;
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UINT32 Attributes;
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} SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO;
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typedef SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE;
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typedef struct {
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EFI_GUID Guid;
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UINTN NameSize;
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VAR_CHECK_VARIABLE_PROPERTY VariableProperty;
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CHAR16 Name[1];
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} SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY;
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typedef struct {
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UINTN VariablePayloadSize;
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} SMM_VARIABLE_COMMUNICATE_GET_PAYLOAD_SIZE;
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#endif // _SMM_VARIABLE_COMMON_H_
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