&mVariablePpi\r
};\r
\r
-EFI_PEI_READ_ONLY_VARIABLE2_PPI mVariablePpiRecovery = {\r
- PeiGetVariableRecovery,\r
- PeiGetNextVariableNameRecovery\r
-};\r
+EFI_GUID mEfiVariableIndexTableGuid = EFI_VARIABLE_INDEX_TABLE_GUID;\r
\r
-EFI_PEI_PPI_DESCRIPTOR mPpiListVariableRecovery = {\r
- (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
- &gEfiPeiReadOnlyVariable2PpiGuid,\r
- &mVariablePpiRecovery\r
-};\r
\r
-EFI_GUID mEfiVariableIndexTableGuid = EFI_VARIABLE_INDEX_TABLE_GUID;\r
+/**\r
+ Check if it runs in Recovery mode.\r
+ \r
+ @param PeiServices General purpose services available to every PEIM.\r
+\r
+ @retval TRUE It's in Recovery mode.\r
+ @retval FALSE It's not in Recovery mode.\r
\r
+**/\r
+BOOLEAN\r
+IsInRecoveryMode (\r
+ IN CONST EFI_PEI_SERVICES **PeiServices\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_BOOT_MODE BootMode;\r
+\r
+ Status = (*PeiServices)->GetBootMode (PeiServices, &BootMode);\r
+ ASSERT_EFI_ERROR (Status);\r
+ \r
+ if (BootMode == BOOT_IN_RECOVERY_MODE) {\r
+ return TRUE;\r
+ }\r
+ return FALSE;\r
+}\r
\r
/**\r
Provide the functionality of the variable services.\r
IN CONST EFI_PEI_SERVICES **PeiServices\r
)\r
{\r
- EFI_BOOT_MODE BootMode;\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Check if this is recovery boot path.\r
- // If no, provide other modules the access capability to variable area in NV storage.\r
- // If yes, the content of variable area is not reliable. Therefore,\r
- // we provide a dummy ReadOnlyVariable2Ppi interface to other pei modules.\r
- // \r
- Status = (*PeiServices)->GetBootMode (PeiServices, &BootMode);\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- if (BootMode == BOOT_IN_RECOVERY_MODE) {\r
- return PeiServicesInstallPpi (&mPpiListVariableRecovery);\r
- }\r
-\r
return PeiServicesInstallPpi (&mPpiListVariable);\r
-\r
}\r
\r
/**\r
if (VariableName == NULL || VariableGuid == NULL || DataSize == NULL) {\r
return EFI_INVALID_PARAMETER;\r
}\r
+\r
+ //\r
+ // Check if this is recovery boot path.\r
+ // If yes, the content of variable area is not reliable. Therefore we directly\r
+ // return EFI_NOT_FOUND. \r
+ // \r
+ if (IsInRecoveryMode(PeiServices)) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
//\r
// Find existing variable\r
//\r
return EFI_INVALID_PARAMETER;\r
}\r
\r
+ //\r
+ // Check if this is recovery boot path.\r
+ // If yes, the content of variable area is not reliable. Therefore we directly\r
+ // return EFI_NOT_FOUND. \r
+ // \r
+ if (IsInRecoveryMode(PeiServices)) {\r
+ return EFI_NOT_FOUND;\r
+ }\r
+\r
Status = FindVariable (PeiServices, VariableName, VariableGuid, &Variable);\r
if (Variable.CurrPtr == NULL || Status != EFI_SUCCESS) {\r
return Status;\r
\r
return EFI_NOT_FOUND;\r
}\r
-\r
-/**\r
- This service retrieves a variable's value using its name and GUID.\r
-\r
- Read the specified variable from the UEFI variable store. If the Data \r
- buffer is too small to hold the contents of the variable, the error\r
- EFI_BUFFER_TOO_SMALL is returned and DataSize is set to the required buffer\r
- size to obtain the data.\r
-\r
- @param This A pointer to this instance of the EFI_PEI_READ_ONLY_VARIABLE2_PPI.\r
- @param VariableName A pointer to a null-terminated string that is the variable's name.\r
- @param VariableGuid A pointer to an EFI_GUID that is the variable's GUID. The combination of\r
- VariableGuid and VariableName must be unique.\r
- @param Attributes If non-NULL, on return, points to the variable's attributes.\r
- @param DataSize On entry, points to the size in bytes of the Data buffer.\r
- On return, points to the size of the data returned in Data.\r
- @param Data Points to the buffer which will hold the returned variable value.\r
-\r
- @retval EFI_SUCCESS The variable was read successfully.\r
- @retval EFI_NOT_FOUND The variable could not be found.\r
- @retval EFI_BUFFER_TOO_SMALL The DataSize is too small for the resulting data. \r
- DataSize is updated with the size required for \r
- the specified variable.\r
- @retval EFI_INVALID_PARAMETER VariableName, VariableGuid, DataSize or Data is NULL.\r
- @retval EFI_DEVICE_ERROR The variable could not be retrieved because of a device error.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-PeiGetVariableRecovery (\r
- IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,\r
- IN CONST CHAR16 *VariableName,\r
- IN CONST EFI_GUID *VariableGuid,\r
- OUT UINT32 *Attributes,\r
- IN OUT UINTN *DataSize,\r
- OUT VOID *Data\r
- )\r
-{\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-/**\r
- Return the next variable name and GUID.\r
-\r
- This function is called multiple times to retrieve the VariableName \r
- and VariableGuid of all variables currently available in the system. \r
- On each call, the previous results are passed into the interface, \r
- and, on return, the interface returns the data for the next \r
- interface. When the entire variable list has been returned, \r
- EFI_NOT_FOUND is returned.\r
-\r
- @param This A pointer to this instance of the EFI_PEI_READ_ONLY_VARIABLE2_PPI.\r
-\r
- @param VariableNameSize On entry, points to the size of the buffer pointed to by VariableName.\r
- @param VariableName On entry, a pointer to a null-terminated string that is the variable's name.\r
- On return, points to the next variable's null-terminated name string.\r
-\r
- @param VariableGuid On entry, a pointer to an UEFI _GUID that is the variable's GUID. \r
- On return, a pointer to the next variable's GUID.\r
-\r
- @retval EFI_SUCCESS The variable was read successfully.\r
- @retval EFI_NOT_FOUND The variable could not be found.\r
- @retval EFI_BUFFER_TOO_SMALL The VariableNameSize is too small for the resulting\r
- data. VariableNameSize is updated with the size\r
- required for the specified variable.\r
- @retval EFI_INVALID_PARAMETER VariableName, VariableGuid or\r
- VariableNameSize is NULL.\r
- @retval EFI_DEVICE_ERROR The variable could not be retrieved because of a device error.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-PeiGetNextVariableNameRecovery (\r
- IN CONST EFI_PEI_READ_ONLY_VARIABLE2_PPI *This,\r
- IN OUT UINTN *VariableNameSize,\r
- IN OUT CHAR16 *VariableName,\r
- IN OUT EFI_GUID *VariableGuid\r
- )\r
-{\r
- return EFI_NOT_FOUND;\r
-}\r
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