+++ /dev/null
-/** @file\r
- If the Variable services have PcdVariableCollectStatistics set to TRUE then \r
- this utility will print out the statistics information. You can use console \r
- redirection to capture the data.\r
- \r
-Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include <Uefi.h>\r
-#include <Library/UefiLib.h>\r
-#include <Library/UefiApplicationEntryPoint.h>\r
-#include <Library/BaseMemoryLib.h>\r
-\r
-#include <Library/BaseLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
-\r
-#include <Guid/AuthenticatedVariableFormat.h>\r
-#include <Guid/SmmVariableCommon.h>\r
-#include <Protocol/SmmCommunication.h>\r
-#include <Protocol/SmmVariable.h>\r
-\r
-extern EFI_GUID gEfiVariableGuid;\r
-EFI_SMM_COMMUNICATION_PROTOCOL *mSmmCommunication = NULL;\r
-\r
-/**\r
-\r
- This function get the variable statistics data from SMM variable driver. \r
-\r
- @param[in, out] SmmCommunicateHeader In input, a pointer to a collection of data that will\r
- be passed into an SMM environment. In output, a pointer \r
- to a collection of data that comes from an SMM environment.\r
- @param[in, out] SmmCommunicateSize The size of the SmmCommunicateHeader.\r
- \r
- @retval EFI_SUCCESS Get the statistics data information.\r
- @retval EFI_NOT_FOUND Not found.\r
- @retval EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-GetVariableStatisticsData (\r
- IN OUT EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader,\r
- IN OUT UINTN *SmmCommunicateSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- SMM_VARIABLE_COMMUNICATE_HEADER *SmmVariableFunctionHeader;\r
-\r
- CopyGuid (&SmmCommunicateHeader->HeaderGuid, &gEfiSmmVariableProtocolGuid);\r
- SmmCommunicateHeader->MessageLength = *SmmCommunicateSize - OFFSET_OF (EFI_SMM_COMMUNICATE_HEADER, Data);\r
-\r
- SmmVariableFunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *) &SmmCommunicateHeader->Data[0];\r
- SmmVariableFunctionHeader->Function = SMM_VARIABLE_FUNCTION_GET_STATISTICS;\r
- \r
- Status = mSmmCommunication->Communicate (mSmmCommunication, SmmCommunicateHeader, SmmCommunicateSize);\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- Status = SmmVariableFunctionHeader->ReturnStatus; \r
- return Status;\r
-}\r
-\r
-\r
-/**\r
-\r
- This function get and print the variable statistics data from SMM variable driver. \r
- \r
- @retval EFI_SUCCESS Print the statistics information successfully.\r
- @retval EFI_NOT_FOUND Not found the statistics information.\r
-\r
-**/\r
-EFI_STATUS\r
-PrintInfoFromSmm (\r
- VOID \r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_INFO_ENTRY *VariableInfo;\r
- EFI_SMM_COMMUNICATE_HEADER *CommBuffer;\r
- UINTN RealCommSize;\r
- UINTN CommSize;\r
- SMM_VARIABLE_COMMUNICATE_HEADER *FunctionHeader;\r
- EFI_SMM_VARIABLE_PROTOCOL *Smmvariable;\r
- \r
-\r
- Status = gBS->LocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID **) &Smmvariable);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = gBS->LocateProtocol (&gEfiSmmCommunicationProtocolGuid, NULL, (VOID **) &mSmmCommunication);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- } \r
-\r
- CommSize = SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE;\r
- RealCommSize = CommSize;\r
- CommBuffer = AllocateZeroPool (CommSize);\r
- ASSERT (CommBuffer != NULL);\r
- \r
- Print (L"Non-Volatile SMM Variables:\n");\r
- do {\r
- Status = GetVariableStatisticsData (CommBuffer, &CommSize);\r
- if (Status == EFI_BUFFER_TOO_SMALL) {\r
- FreePool (CommBuffer);\r
- CommBuffer = AllocateZeroPool (CommSize);\r
- ASSERT (CommBuffer != NULL);\r
- RealCommSize = CommSize;\r
- Status = GetVariableStatisticsData (CommBuffer, &CommSize);\r
- }\r
-\r
- if (EFI_ERROR (Status) || (CommSize <= SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE)) { \r
- break;\r
- }\r
-\r
- if (CommSize < RealCommSize) {\r
- CommSize = RealCommSize;\r
- }\r
-\r
- FunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *) CommBuffer->Data;\r
- VariableInfo = (VARIABLE_INFO_ENTRY *) FunctionHeader->Data;\r
-\r
- if (!VariableInfo->Volatile) {\r
- Print (\r
- L"%g R%03d(%03d) W%03d D%03d:%s\n", \r
- &VariableInfo->VendorGuid, \r
- VariableInfo->ReadCount,\r
- VariableInfo->CacheCount,\r
- VariableInfo->WriteCount,\r
- VariableInfo->DeleteCount,\r
- (CHAR16 *)(VariableInfo + 1)\r
- );\r
- }\r
- } while (TRUE);\r
- \r
- Print (L"Volatile SMM Variables:\n");\r
- ZeroMem (CommBuffer, CommSize);\r
- do {\r
- Status = GetVariableStatisticsData (CommBuffer, &CommSize);\r
- if (Status == EFI_BUFFER_TOO_SMALL) {\r
- FreePool (CommBuffer);\r
- CommBuffer = AllocateZeroPool (CommSize);\r
- ASSERT (CommBuffer != NULL);\r
- RealCommSize = CommSize;\r
- Status = GetVariableStatisticsData (CommBuffer, &CommSize);\r
- }\r
-\r
- if (EFI_ERROR (Status) || (CommSize <= SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE)) { \r
- break;\r
- }\r
-\r
- if (CommSize < RealCommSize) {\r
- CommSize = RealCommSize;\r
- }\r
-\r
- FunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *) CommBuffer->Data;\r
- VariableInfo = (VARIABLE_INFO_ENTRY *) FunctionHeader->Data;\r
-\r
- if (VariableInfo->Volatile) {\r
- Print (\r
- L"%g R%03d(%03d) W%03d D%03d:%s\n", \r
- &VariableInfo->VendorGuid, \r
- VariableInfo->ReadCount,\r
- VariableInfo->CacheCount,\r
- VariableInfo->WriteCount,\r
- VariableInfo->DeleteCount,\r
- (CHAR16 *)(VariableInfo + 1)\r
- );\r
- }\r
- } while (TRUE);\r
-\r
- FreePool (CommBuffer); \r
- return Status;\r
-}\r
-\r
-/**\r
- The user Entry Point for Application. The user code starts with this function\r
- as the real entry point for the image goes into a library that calls this \r
- function.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
- @param[in] SystemTable A pointer to the EFI System Table.\r
- \r
- @retval EFI_SUCCESS The entry point is executed successfully.\r
- @retval other Some error occurs when executing this entry point.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-UefiMain (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_INFO_ENTRY *VariableInfo;\r
- VARIABLE_INFO_ENTRY *Entry;\r
-\r
- Status = EfiGetSystemConfigurationTable (&gEfiVariableGuid, (VOID **)&Entry);\r
- if (EFI_ERROR (Status) || (Entry == NULL)) {\r
- Status = EfiGetSystemConfigurationTable (&gEfiAuthenticatedVariableGuid, (VOID **)&Entry);\r
- }\r
-\r
- if (EFI_ERROR (Status) || (Entry == NULL)) {\r
- Status = PrintInfoFromSmm ();\r
- if (!EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- } \r
-\r
- if (!EFI_ERROR (Status) && (Entry != NULL)) {\r
- Print (L"Non-Volatile EFI Variables:\n");\r
- VariableInfo = Entry;\r
- do {\r
- if (!VariableInfo->Volatile) {\r
- Print (\r
- L"%g R%03d(%03d) W%03d D%03d:%s\n", \r
- &VariableInfo->VendorGuid, \r
- VariableInfo->ReadCount,\r
- VariableInfo->CacheCount,\r
- VariableInfo->WriteCount,\r
- VariableInfo->DeleteCount,\r
- VariableInfo->Name\r
- );\r
- }\r
-\r
- VariableInfo = VariableInfo->Next;\r
- } while (VariableInfo != NULL);\r
-\r
- Print (L"Volatile EFI Variables:\n");\r
- VariableInfo = Entry;\r
- do {\r
- if (VariableInfo->Volatile) {\r
- Print (\r
- L"%g R%03d(%03d) W%03d D%03d:%s\n", \r
- &VariableInfo->VendorGuid, \r
- VariableInfo->ReadCount,\r
- VariableInfo->CacheCount,\r
- VariableInfo->WriteCount,\r
- VariableInfo->DeleteCount,\r
- VariableInfo->Name\r
- );\r
- }\r
- VariableInfo = VariableInfo->Next;\r
- } while (VariableInfo != NULL);\r
-\r
- } else {\r
- Print (L"Warning: Variable Dxe driver doesn't enable the feature of statistical information!\n");\r
- Print (L"If you want to see this info, please:\n");\r
- Print (L" 1. Set PcdVariableCollectStatistics as TRUE\n");\r
- Print (L" 2. Rebuild Variable Dxe driver\n");\r
- Print (L" 3. Run \"VariableInfo\" cmd again\n");\r
- }\r
-\r
- return Status;\r
-}\r
+++ /dev/null
-## @file\r
-# A shell application that displays statistical information about variable usage\r
-#\r
-# This application can display statistical information about variable usage for SMM variable\r
-# driver and non-SMM variable driver.\r
-# Note that if Variable Dxe driver doesn't enable the feature by setting PcdVariableCollectStatistics\r
-# as TRUE, the application will not display variable statistical information.\r
-#\r
-# Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-##\r
-\r
-[Defines]\r
- INF_VERSION = 0x00010005\r
- BASE_NAME = VariableInfo\r
- MODULE_UNI_FILE = VariableInfo.uni\r
- FILE_GUID = B9EF901F-A2A2-4fc8-8D2B-3A2E07B301CC\r
- MODULE_TYPE = UEFI_APPLICATION\r
- VERSION_STRING = 1.0\r
- ENTRY_POINT = UefiMain\r
-\r
-#\r
-# The following information is for reference only and not required by the build tools.\r
-#\r
-# VALID_ARCHITECTURES = IA32 X64 IPF EBC\r
-#\r
-\r
-[Sources]\r
- VariableInfo.c\r
-\r
-\r
-[Packages]\r
- MdePkg/MdePkg.dec\r
- MdeModulePkg/MdeModulePkg.dec\r
- SecurityPkg/SecurityPkg.dec\r
-\r
-[LibraryClasses]\r
- UefiApplicationEntryPoint\r
- UefiLib\r
- UefiBootServicesTableLib\r
- BaseMemoryLib\r
- MemoryAllocationLib\r
-\r
-[Protocols]\r
- gEfiSmmCommunicationProtocolGuid ## SOMETIMES_CONSUMES\r
- \r
- ## UNDEFINED # Used to do smm communication\r
- ## SOMETIMES_CONSUMES \r
- gEfiSmmVariableProtocolGuid \r
- \r
-[Guids]\r
- gEfiAuthenticatedVariableGuid ## SOMETIMES_CONSUMES ## SystemTable\r
- gEfiVariableGuid ## CONSUMES ## SystemTable\r
-\r
-[UserExtensions.TianoCore."ExtraFiles"]\r
- VariableInfoExtra.uni\r
-
\ No newline at end of file
/** @file\r
- The variable data structures are related to EDKII-specific \r
+ The variable data structures are related to EDKII-specific\r
implementation of UEFI authenticated variables.\r
- AuthenticatedVariableFormat.h defines variable data headers \r
- and variable storage region headers.\r
-\r
-Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
+ AuthenticatedVariableFormat.h defines variable data headers\r
+ and variable storage region headers that has been moved to\r
+ VariableFormat.h.\r
+\r
+Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
+This program and the accompanying materials\r
+are licensed and made available under the terms and conditions of the BSD License\r
+which accompanies this distribution. The full text of the license may be found at\r
http://opensource.org/licenses/bsd-license.php\r
\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
\r
**/\r
#ifndef __AUTHENTICATED_VARIABLE_FORMAT_H__\r
#define __AUTHENTICATED_VARIABLE_FORMAT_H__\r
\r
-#define EFI_AUTHENTICATED_VARIABLE_GUID \\r
- { 0xaaf32c78, 0x947b, 0x439a, { 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92 } }\r
+#include <Guid/VariableFormat.h>\r
\r
#define EFI_SECURE_BOOT_ENABLE_DISABLE \\r
{ 0xf0a30bc7, 0xaf08, 0x4556, { 0x99, 0xc4, 0x0, 0x10, 0x9, 0xc9, 0x3a, 0x44 } }\r
\r
-\r
-extern EFI_GUID gEfiAuthenticatedVariableGuid;\r
extern EFI_GUID gEfiSecureBootEnableDisableGuid;\r
extern EFI_GUID gEfiCertDbGuid;\r
extern EFI_GUID gEfiCustomModeEnableGuid;\r
/// This variable is used for allowing a physically present user to disable\r
/// Secure Boot via firmware setup without the possession of PKpriv.\r
///\r
+/// GUID: gEfiSecureBootEnableDisableGuid\r
+///\r
+/// Format: UINT8\r
+///\r
#define EFI_SECURE_BOOT_ENABLE_NAME L"SecureBootEnable"\r
#define SECURE_BOOT_ENABLE 1\r
#define SECURE_BOOT_DISABLE 0\r
/// Can enroll or delete KEK without existing PK's private key.\r
/// Can enroll or delete signature from DB/DBX without KEK's private key.\r
///\r
+/// GUID: gEfiCustomModeEnableGuid\r
+///\r
+/// Format: UINT8\r
+///\r
#define EFI_CUSTOM_MODE_NAME L"CustomMode"\r
#define CUSTOM_SECURE_BOOT_MODE 1\r
#define STANDARD_SECURE_BOOT_MODE 0\r
/// the platform vendor has used a mechanism not defined by the UEFI Specification to\r
/// transition the system to setup mode or to update secure boot keys.\r
///\r
+/// GUID: gEfiVendorKeysNvGuid\r
+///\r
+/// Format: UINT8\r
+///\r
#define EFI_VENDOR_KEYS_NV_VARIABLE_NAME L"VendorKeysNv"\r
#define VENDOR_KEYS_VALID 1\r
#define VENDOR_KEYS_MODIFIED 0\r
\r
-///\r
-/// Alignment of variable name and data, according to the architecture:\r
-/// * For IA-32 and Intel(R) 64 architectures: 1.\r
-/// * For IA-64 architecture: 8.\r
-///\r
-#if defined (MDE_CPU_IPF)\r
-#define ALIGNMENT 8\r
-#else\r
-#define ALIGNMENT 1\r
-#endif\r
-\r
-//\r
-// GET_PAD_SIZE calculates the miminal pad bytes needed to make the current pad size satisfy the alignment requirement.\r
-//\r
-#if (ALIGNMENT == 1)\r
-#define GET_PAD_SIZE(a) (0)\r
-#else\r
-#define GET_PAD_SIZE(a) (((~a) + 1) & (ALIGNMENT - 1))\r
-#endif\r
-\r
-///\r
-/// Alignment of Variable Data Header in Variable Store region.\r
-///\r
-#define HEADER_ALIGNMENT 4\r
-#define HEADER_ALIGN(Header) (((UINTN) (Header) + HEADER_ALIGNMENT - 1) & (~(HEADER_ALIGNMENT - 1)))\r
-\r
-///\r
-/// Status of Variable Store Region.\r
-///\r
-typedef enum {\r
- EfiRaw,\r
- EfiValid,\r
- EfiInvalid,\r
- EfiUnknown\r
-} VARIABLE_STORE_STATUS;\r
-\r
-#pragma pack(1)\r
-\r
-#define VARIABLE_STORE_SIGNATURE EFI_AUTHENTICATED_VARIABLE_GUID\r
-\r
-///\r
-/// Variable Store Header Format and State.\r
-///\r
-#define VARIABLE_STORE_FORMATTED 0x5a\r
-#define VARIABLE_STORE_HEALTHY 0xfe\r
-\r
-///\r
-/// Variable Store region header.\r
-///\r
-typedef struct {\r
- ///\r
- /// Variable store region signature.\r
- ///\r
- EFI_GUID Signature;\r
- ///\r
- /// Size of entire variable store, \r
- /// including size of variable store header but not including the size of FvHeader.\r
- ///\r
- UINT32 Size;\r
- ///\r
- /// Variable region format state.\r
- ///\r
- UINT8 Format;\r
- ///\r
- /// Variable region healthy state.\r
- ///\r
- UINT8 State;\r
- UINT16 Reserved;\r
- UINT32 Reserved1;\r
-} VARIABLE_STORE_HEADER;\r
-\r
-///\r
-/// Variable data start flag.\r
-///\r
-#define VARIABLE_DATA 0x55AA\r
-\r
-///\r
-/// Variable State flags.\r
-///\r
-#define VAR_IN_DELETED_TRANSITION 0xfe ///< Variable is in obsolete transition.\r
-#define VAR_DELETED 0xfd ///< Variable is obsolete.\r
-#define VAR_HEADER_VALID_ONLY 0x7f ///< Variable header has been valid.\r
-#define VAR_ADDED 0x3f ///< Variable has been completely added.\r
-\r
-///\r
-/// Variable Attribute combinations.\r
-///\r
-#define VARIABLE_ATTRIBUTE_NV_BS (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_BS_RT (EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_AT_AW (EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT (VARIABLE_ATTRIBUTE_BS_RT | EFI_VARIABLE_NON_VOLATILE)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_HR (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_HARDWARE_ERROR_RECORD)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_AT (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_HR_AT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT_HR | VARIABLE_ATTRIBUTE_AT_AW)\r
-\r
-/// Single Variable Data Header Structure.\r
-///\r
-typedef struct {\r
- ///\r
- /// Variable Data Start Flag.\r
- ///\r
- UINT16 StartId;\r
- ///\r
- /// Variable State defined above.\r
- ///\r
- UINT8 State;\r
- UINT8 Reserved;\r
- ///\r
- /// Attributes of variable defined in UEFI specification.\r
- ///\r
- UINT32 Attributes;\r
- ///\r
- /// Associated monotonic count value against replay attack.\r
- ///\r
- UINT64 MonotonicCount;\r
- ///\r
- /// Associated TimeStamp value against replay attack. \r
- ///\r
- EFI_TIME TimeStamp;\r
- ///\r
- /// Index of associated public key in database.\r
- ///\r
- UINT32 PubKeyIndex;\r
- ///\r
- /// Size of variable null-terminated Unicode string name.\r
- ///\r
- UINT32 NameSize;\r
- ///\r
- /// Size of the variable data without this header.\r
- ///\r
- UINT32 DataSize;\r
- ///\r
- /// A unique identifier for the vendor that produces and consumes this varaible.\r
- ///\r
- EFI_GUID VendorGuid;\r
-} VARIABLE_HEADER;\r
-\r
-typedef struct {\r
- EFI_GUID *Guid;\r
- CHAR16 *Name;\r
- UINTN VariableSize;\r
-} VARIABLE_ENTRY_CONSISTENCY;\r
-\r
-#pragma pack()\r
-\r
-typedef struct _VARIABLE_INFO_ENTRY VARIABLE_INFO_ENTRY;\r
-\r
-///\r
-/// This structure contains the variable list that is put in EFI system table.\r
-/// The variable driver collects all variables that were used at boot service time and produces this list.\r
-/// This is an optional feature to dump all used variables in shell environment. \r
-///\r
-struct _VARIABLE_INFO_ENTRY {\r
- VARIABLE_INFO_ENTRY *Next; ///< Pointer to next entry.\r
- EFI_GUID VendorGuid; ///< Guid of Variable.\r
- CHAR16 *Name; ///< Name of Variable. \r
- UINT32 Attributes; ///< Attributes of variable defined in UEFI spec.\r
- UINT32 ReadCount; ///< Number of times to read this variable.\r
- UINT32 WriteCount; ///< Number of times to write this variable.\r
- UINT32 DeleteCount; ///< Number of times to delete this variable.\r
- UINT32 CacheCount; ///< Number of times that cache hits this variable.\r
- BOOLEAN Volatile; ///< TRUE if volatile, FALSE if non-volatile.\r
-};\r
-\r
#endif // __AUTHENTICATED_VARIABLE_FORMAT_H__\r
+++ /dev/null
-/** @file\r
- This library is used by other modules to measure data to TPM.\r
-\r
-Copyright (c) 2012, Intel Corporation. All rights reserved. <BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#ifndef _TPM_MEASUREMENT_LIB_H_\r
-#define _TPM_MEASUREMENT_LIB_H_\r
-\r
-/**\r
- Tpm measure and log data, and extend the measurement result into a specific PCR.\r
-\r
- @param[in] PcrIndex PCR Index.\r
- @param[in] EventType Event type.\r
- @param[in] EventLog Measurement event log.\r
- @param[in] LogLen Event log length in bytes.\r
- @param[in] HashData The start of the data buffer to be hashed, extended.\r
- @param[in] HashDataLen The length, in bytes, of the buffer referenced by HashData\r
-\r
- @retval EFI_SUCCESS Operation completed successfully.\r
- @retval EFI_UNSUPPORTED TPM device not available.\r
- @retval EFI_OUT_OF_RESOURCES Out of memory.\r
- @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
-**/\r
-EFI_STATUS\r
-EFIAPI \r
-TpmMeasureAndLogData (\r
- IN UINT32 PcrIndex,\r
- IN UINT32 EventType,\r
- IN VOID *EventLog,\r
- IN UINT32 LogLen,\r
- IN VOID *HashData,\r
- IN UINT64 HashDataLen\r
- );\r
-\r
-#endif\r
## @file\r
# Provides TPM measurement functions for TPM1.2 and TPM 2.0\r
# \r
-# This library provides TpmMeasureAndLogData() to to measure and log data, and \r
+# This library provides TpmMeasureAndLogData() to measure and log data, and \r
# extend the measurement result into a specific PCR.\r
#\r
-# Copyright (c) 2012 - 2014, Intel Corporation. All rights reserved.<BR>\r
+# Copyright (c) 2012 - 2015, Intel Corporation. All rights reserved.<BR>\r
# This program and the accompanying materials\r
# are licensed and made available under the terms and conditions of the BSD License\r
# which accompanies this distribution. The full text of the license may be found at\r
\r
[Packages]\r
MdePkg/MdePkg.dec\r
+ MdeModulePkg/MdeModulePkg.dec\r
SecurityPkg/SecurityPkg.dec\r
\r
[LibraryClasses]\r
DEC_SPECIFICATION = 0x00010005\r
PACKAGE_NAME = SecurityPkg\r
PACKAGE_UNI_FILE = SecurityPkg.uni\r
- PACKAGE_GUID = 24369CAC-6AA6-4fb8-88DB-90BF061668AD\r
- PACKAGE_VERSION = 0.94\r
+ PACKAGE_GUID = 4EFC4F66-6219-4427-B780-FB99F470767F\r
+ PACKAGE_VERSION = 0.95\r
\r
[Includes]\r
Include\r
## @libraryclass Provides TPM Interface Specification (TIS) interfaces for TPM command.\r
#\r
TpmCommLib|Include/Library/TpmCommLib.h\r
- \r
- ## @libraryclass Provides common interfaces about TPM measurement for other modules.\r
- #\r
- TpmMeasurementLib|Include/Library/TpmMeasurementLib.h\r
\r
## @libraryclass Provides interfaces to handle TPM 2.0 request.\r
#\r
# Include/Guid/SecurityPkgTokenSpace.h\r
gEfiSecurityPkgTokenSpaceGuid = { 0xd3fb176, 0x9569, 0x4d51, { 0xa3, 0xef, 0x7d, 0x61, 0xc6, 0x4f, 0xea, 0xba }}\r
\r
- ## Guid acted as the authenticated variable store header's signature, and to specify the variable list entries put in the EFI system table.\r
- # Include/Guid/AuthenticatedVariableFormat.h\r
- gEfiAuthenticatedVariableGuid = { 0xaaf32c78, 0x947b, 0x439a, { 0xa1, 0x80, 0x2e, 0x14, 0x4e, 0xc3, 0x77, 0x92 } }\r
-\r
## GUID used to "SecureBootEnable" variable for the Secure Boot feature enable/disable.\r
# This variable is used for allowing a physically present user to disable Secure Boot via firmware setup without the possession of PKpriv.\r
# Include/Guid/AuthenticatedVariableFormat.h\r
[Defines]\r
PLATFORM_NAME = SecurityPkg\r
PLATFORM_GUID = B2C4614D-AE76-47ba-B876-5988BFED064F\r
- PLATFORM_VERSION = 0.94\r
+ PLATFORM_VERSION = 0.95\r
DSC_SPECIFICATION = 0x00010005\r
OUTPUT_DIRECTORY = Build/SecurityPkg\r
SUPPORTED_ARCHITECTURES = IA32|IPF|X64|EBC\r
gEfiSecurityPkgTokenSpaceGuid.PcdTpmScrtmPolicy|1\r
\r
[Components]\r
- SecurityPkg/VariableAuthenticated/Pei/VariablePei.inf\r
SecurityPkg/Library/DxeImageVerificationLib/DxeImageVerificationLib.inf\r
#SecurityPkg/Library/DxeDeferImageLoadLib/DxeDeferImageLoadLib.inf\r
SecurityPkg/Library/DxeImageAuthenticationStatusLib/DxeImageAuthenticationStatusLib.inf\r
#\r
# Application\r
#\r
- SecurityPkg/Application/VariableInfo/VariableInfo.inf\r
SecurityPkg/Application/RngTest/RngTest.inf\r
\r
#\r
# SecurityPkg/UserIdentification/PwdCredentialProviderDxe/PwdCredentialProviderDxe.inf\r
# SecurityPkg/UserIdentification/UsbCredentialProviderDxe/UsbCredentialProviderDxe.inf\r
SecurityPkg/VariableAuthenticated/SecureBootConfigDxe/SecureBootConfigDxe.inf\r
- SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableRuntimeDxe.inf\r
\r
#\r
# TPM\r
SecurityPkg/Pkcs7Verify/Pkcs7VerifyDxe/Pkcs7VerifyDxe.inf\r
\r
[Components.IA32, Components.X64]\r
- SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmm.inf\r
- SecurityPkg/VariableAuthenticated/RuntimeDxe/VariableSmmRuntimeDxe.inf\r
SecurityPkg/Tcg/TcgSmm/TcgSmm.inf\r
SecurityPkg/Tcg/TrEESmm/TrEESmm.inf\r
#\r
VOID\r
)\r
{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINT8 VarValue;\r
- UINT32 VarAttr;\r
- UINTN DataSize;\r
- UINTN CtxSize;\r
- VARIABLE_HEADER VariableHeader;\r
- BOOLEAN Valid;\r
+ EFI_STATUS Status;\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINT8 VarValue;\r
+ UINT32 VarAttr;\r
+ UINTN DataSize;\r
+ UINTN CtxSize;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ BOOLEAN Valid;\r
\r
- ZeroMem (&VariableHeader, sizeof (VARIABLE_HEADER));\r
+ ZeroMem (&VariableHeader, sizeof (AUTHENTICATED_VARIABLE_HEADER));\r
\r
mVariableModuleGlobal->AuthenticatedVariableGuid[Physical] = &gEfiAuthenticatedVariableGuid;\r
mVariableModuleGlobal->CertRsa2048Sha256Guid[Physical] = &gEfiCertRsa2048Sha256Guid;\r
IN BOOLEAN IsPk\r
)\r
{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK PkVariable;\r
- EFI_SIGNATURE_LIST *OldPkList;\r
- EFI_SIGNATURE_DATA *OldPkData;\r
- EFI_VARIABLE_AUTHENTICATION *CertData;\r
- VARIABLE_HEADER VariableHeader;\r
- BOOLEAN Valid;\r
+ EFI_STATUS Status;\r
+ VARIABLE_POINTER_TRACK PkVariable;\r
+ EFI_SIGNATURE_LIST *OldPkList;\r
+ EFI_SIGNATURE_DATA *OldPkData;\r
+ EFI_VARIABLE_AUTHENTICATION *CertData;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ BOOLEAN Valid;\r
\r
OldPkList = NULL;\r
- ZeroMem (&VariableHeader, sizeof (VARIABLE_HEADER));\r
+ ZeroMem (&VariableHeader, sizeof (AUTHENTICATED_VARIABLE_HEADER));\r
\r
if ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
//\r
EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlock;\r
BOOLEAN IsFound;\r
UINT32 Index;\r
- VARIABLE_HEADER VariableHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
BOOLEAN Valid;\r
\r
KekList = NULL;\r
- ZeroMem (&VariableHeader, sizeof (VARIABLE_HEADER));\r
+ ZeroMem (&VariableHeader, sizeof (AUTHENTICATED_VARIABLE_HEADER));\r
\r
if (mPlatformMode == USER_MODE) {\r
if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) == 0) {\r
UINT8 *PubKey;\r
EFI_VARIABLE_AUTHENTICATION *CertData;\r
EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlock;\r
- VARIABLE_HEADER VariableHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
BOOLEAN Valid;\r
\r
CertData = NULL;\r
//\r
// Determine if first time SetVariable with the EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS.\r
//\r
- ZeroMem (&VariableHeader, sizeof (VARIABLE_HEADER));\r
+ ZeroMem (&VariableHeader, sizeof (AUTHENTICATED_VARIABLE_HEADER));\r
if (Variable->CurrPtr != 0x0) {\r
Valid = IsValidVariableHeader (\r
Variable->CurrPtr, \r
FALSE - Variable is non-volatile.\r
@param[in] Global Pointer to VARAIBLE_GLOBAL structure.\r
@param[in] Instance Instance of FV Block services.\r
- @param[out] VariableHeader Pointer to VARIABLE_HEADER for output.\r
+ @param[out] VariableHeader Pointer to AUTHENTICATED_VARIABLE_HEADER for output.\r
\r
@retval TRUE Variable header is valid.\r
@retval FALSE Variable header is not valid.\r
**/\r
BOOLEAN\r
IsValidVariableHeader (\r
- IN EFI_PHYSICAL_ADDRESS VariableAddress,\r
- IN BOOLEAN Volatile,\r
- IN VARIABLE_GLOBAL *Global,\r
- IN UINTN Instance,\r
- OUT VARIABLE_HEADER *VariableHeader OPTIONAL\r
+ IN EFI_PHYSICAL_ADDRESS VariableAddress,\r
+ IN BOOLEAN Volatile,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINTN Instance,\r
+ OUT AUTHENTICATED_VARIABLE_HEADER *VariableHeader OPTIONAL\r
)\r
{\r
- EFI_STATUS Status;\r
- VARIABLE_HEADER LocalVariableHeader;\r
+ EFI_STATUS Status;\r
+ AUTHENTICATED_VARIABLE_HEADER LocalVariableHeader;\r
\r
Status = AccessVariableStore (\r
FALSE,\r
Volatile,\r
Instance,\r
VariableAddress,\r
- sizeof (VARIABLE_HEADER),\r
+ sizeof (AUTHENTICATED_VARIABLE_HEADER),\r
&LocalVariableHeader \r
);\r
\r
}\r
\r
if (VariableHeader != NULL) {\r
- CopyMem (VariableHeader, &LocalVariableHeader, sizeof (VARIABLE_HEADER));\r
+ CopyMem (VariableHeader, &LocalVariableHeader, sizeof (AUTHENTICATED_VARIABLE_HEADER));\r
}\r
\r
return TRUE;\r
**/\r
UINTN\r
NameSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
+ IN AUTHENTICATED_VARIABLE_HEADER *Variable\r
)\r
{\r
if (Variable->State == (UINT8) (-1) ||\r
**/\r
UINTN\r
DataSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
+ IN AUTHENTICATED_VARIABLE_HEADER *Variable\r
)\r
{\r
if (Variable->State == (UINT8) -1 ||\r
OUT CHAR16 *VariableName\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_PHYSICAL_ADDRESS Address;\r
- VARIABLE_HEADER VariableHeader;\r
- BOOLEAN IsValid;\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS Address;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ BOOLEAN IsValid;\r
\r
IsValid = IsValidVariableHeader (VariableAddress, Volatile, Global, Instance, &VariableHeader);\r
ASSERT (IsValid);\r
//\r
// Name area follows variable header.\r
//\r
- Address = VariableAddress + sizeof (VARIABLE_HEADER);\r
+ Address = VariableAddress + sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
\r
Status = AccessVariableStore (\r
FALSE,\r
OUT CHAR16 *VariableData\r
)\r
{\r
- EFI_STATUS Status;\r
- EFI_PHYSICAL_ADDRESS Address;\r
- VARIABLE_HEADER VariableHeader;\r
- BOOLEAN IsValid;\r
+ EFI_STATUS Status;\r
+ EFI_PHYSICAL_ADDRESS Address;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ BOOLEAN IsValid;\r
\r
IsValid = IsValidVariableHeader (VariableAddress, Volatile, Global, Instance, &VariableHeader);\r
ASSERT (IsValid);\r
// Data area follows variable name.\r
// Be careful about pad size for alignment\r
//\r
- Address = VariableAddress + sizeof (VARIABLE_HEADER);\r
+ Address = VariableAddress + sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
Address += NameSizeOfVariable (&VariableHeader);\r
Address += GET_PAD_SIZE (NameSizeOfVariable (&VariableHeader));\r
\r
IN UINTN Instance\r
)\r
{\r
- EFI_PHYSICAL_ADDRESS Address;\r
- VARIABLE_HEADER VariableHeader;\r
+ EFI_PHYSICAL_ADDRESS Address;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
\r
if (!IsValidVariableHeader (VariableAddress, Volatile, Global, Instance, &VariableHeader)) {\r
return 0x0;\r
//\r
// Header of next variable follows data area of this variable\r
//\r
- Address = VariableAddress + sizeof (VARIABLE_HEADER);\r
+ Address = VariableAddress + sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
Address += NameSizeOfVariable (&VariableHeader);\r
Address += GET_PAD_SIZE (NameSizeOfVariable (&VariableHeader));\r
Address += DataSizeOfVariable (&VariableHeader);\r
IN UINTN Instance\r
)\r
{\r
- EFI_PHYSICAL_ADDRESS Variable[2];\r
- EFI_PHYSICAL_ADDRESS InDeletedVariable;\r
- EFI_PHYSICAL_ADDRESS VariableStoreHeader[2];\r
- UINTN InDeletedStorageIndex;\r
- UINTN Index;\r
- CHAR16 LocalVariableName[MAX_NAME_SIZE];\r
- BOOLEAN Volatile;\r
- VARIABLE_HEADER VariableHeader;\r
+ EFI_PHYSICAL_ADDRESS Variable[2];\r
+ EFI_PHYSICAL_ADDRESS InDeletedVariable;\r
+ EFI_PHYSICAL_ADDRESS VariableStoreHeader[2];\r
+ UINTN InDeletedStorageIndex;\r
+ UINTN Index;\r
+ CHAR16 LocalVariableName[MAX_NAME_SIZE];\r
+ BOOLEAN Volatile;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
\r
//\r
// 0: Volatile, 1: Non-Volatile\r
IN EFI_PHYSICAL_ADDRESS UpdatingVariable\r
)\r
{\r
- EFI_PHYSICAL_ADDRESS Variable;\r
- EFI_PHYSICAL_ADDRESS AddedVariable;\r
- EFI_PHYSICAL_ADDRESS NextVariable;\r
- EFI_PHYSICAL_ADDRESS NextAddedVariable;\r
- VARIABLE_STORE_HEADER VariableStoreHeader;\r
- VARIABLE_HEADER VariableHeader;\r
- VARIABLE_HEADER AddedVariableHeader;\r
- CHAR16 VariableName[MAX_NAME_SIZE];\r
- CHAR16 AddedVariableName[MAX_NAME_SIZE];\r
- UINT8 *ValidBuffer;\r
- UINTN MaximumBufferSize;\r
- UINTN VariableSize;\r
- UINTN NameSize;\r
- UINT8 *CurrPtr;\r
- BOOLEAN FoundAdded;\r
- EFI_STATUS Status;\r
- VARIABLE_GLOBAL *VariableGlobal;\r
- UINT32 Instance;\r
+ EFI_PHYSICAL_ADDRESS Variable;\r
+ EFI_PHYSICAL_ADDRESS AddedVariable;\r
+ EFI_PHYSICAL_ADDRESS NextVariable;\r
+ EFI_PHYSICAL_ADDRESS NextAddedVariable;\r
+ VARIABLE_STORE_HEADER VariableStoreHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER AddedVariableHeader;\r
+ CHAR16 VariableName[MAX_NAME_SIZE];\r
+ CHAR16 AddedVariableName[MAX_NAME_SIZE];\r
+ UINT8 *ValidBuffer;\r
+ UINTN MaximumBufferSize;\r
+ UINTN VariableSize;\r
+ UINTN NameSize;\r
+ UINT8 *CurrPtr;\r
+ BOOLEAN FoundAdded;\r
+ EFI_STATUS Status;\r
+ VARIABLE_GLOBAL *VariableGlobal;\r
+ UINT32 Instance;\r
\r
VariableGlobal = &Global->VariableGlobal[VirtualMode];\r
Instance = Global->FvbInstance;\r
VariableSize = NextVariable - Variable;\r
CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r
CurrPtr += VariableSize;\r
- if ((!IsVolatile) && ((((VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
+ if ((!IsVolatile) && ((((AUTHENTICATED_VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
Global->HwErrVariableTotalSize += VariableSize;\r
- } else if ((!IsVolatile) && ((((VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
+ } else if ((!IsVolatile) && ((((AUTHENTICATED_VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
Global->CommonVariableTotalSize += VariableSize;\r
}\r
}\r
// 1. No valid instance of this variable exists.\r
// 2. It is not the variable that is going to be updated.\r
//\r
- ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r
+ ((AUTHENTICATED_VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r
}\r
CurrPtr += VariableSize;\r
- if ((!IsVolatile) && ((((VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
+ if ((!IsVolatile) && ((((AUTHENTICATED_VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
Global->HwErrVariableTotalSize += VariableSize;\r
- } else if ((!IsVolatile) && ((((VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
+ } else if ((!IsVolatile) && ((((AUTHENTICATED_VARIABLE_HEADER*)Variable)->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
Global->CommonVariableTotalSize += VariableSize;\r
}\r
}\r
VariableGlobal,\r
Variable.Volatile,\r
Instance,\r
- (UINTN) &(((VARIABLE_HEADER *)Variable.CurrPtr)->DataSize),\r
+ (UINTN) &(((AUTHENTICATED_VARIABLE_HEADER *)Variable.CurrPtr)->DataSize),\r
sizeof (DataSize),\r
&DataSize\r
); \r
)\r
{\r
EFI_STATUS Status;\r
- VARIABLE_HEADER *NextVariable;\r
+ AUTHENTICATED_VARIABLE_HEADER *NextVariable;\r
UINTN VarNameOffset;\r
UINTN VarDataOffset;\r
UINTN VarNameSize;\r
UINTN VarSize;\r
BOOLEAN Volatile;\r
UINT8 State;\r
- VARIABLE_HEADER VariableHeader;\r
- VARIABLE_HEADER *NextVariableHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER *NextVariableHeader;\r
BOOLEAN Valid;\r
BOOLEAN Reclaimed;\r
VARIABLE_STORE_HEADER VariableStoreHeader;\r
VariableGlobal,\r
Variable->Volatile,\r
Instance,\r
- (UINTN) &(((VARIABLE_HEADER *)Variable->CurrPtr)->State),\r
+ (UINTN) &(((AUTHENTICATED_VARIABLE_HEADER *)Variable->CurrPtr)->State),\r
sizeof (UINT8),\r
&State\r
); \r
// then return to the caller immediately.\r
//\r
if (DataSizeOfVariable (&VariableHeader) == DataSize) {\r
- NextVariable = (VARIABLE_HEADER *)GetEndPointer (VariableGlobal->VolatileVariableBase, TRUE, VariableGlobal, Instance);\r
+ NextVariable = (AUTHENTICATED_VARIABLE_HEADER *)GetEndPointer (VariableGlobal->VolatileVariableBase, TRUE, VariableGlobal, Instance);\r
GetVariableDataPtr (Variable->CurrPtr, Variable->Volatile, VariableGlobal, Instance, (CHAR16 *) NextVariable);\r
if (CompareMem (Data, (VOID *) NextVariable, DataSize) == 0) {\r
UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r
VariableGlobal,\r
Variable->Volatile,\r
Instance,\r
- (UINTN) &(((VARIABLE_HEADER *)Variable->CurrPtr)->State),\r
+ (UINTN) &(((AUTHENTICATED_VARIABLE_HEADER *)Variable->CurrPtr)->State),\r
sizeof (UINT8),\r
&State\r
); \r
// Tricky part: Use scratch data area at the end of volatile variable store\r
// as a temporary storage.\r
//\r
- NextVariable = (VARIABLE_HEADER *)GetEndPointer (VariableGlobal->VolatileVariableBase, TRUE, VariableGlobal, Instance);\r
+ NextVariable = (AUTHENTICATED_VARIABLE_HEADER *)GetEndPointer (VariableGlobal->VolatileVariableBase, TRUE, VariableGlobal, Instance);\r
ScratchSize = MAX (PcdGet32 (PcdMaxVariableSize), PcdGet32 (PcdMaxHardwareErrorVariableSize));\r
- NextVariableHeader = (VARIABLE_HEADER *) NextVariable;\r
+ NextVariableHeader = (AUTHENTICATED_VARIABLE_HEADER *) NextVariable;\r
\r
SetMem (NextVariableHeader, ScratchSize, 0xff);\r
\r
NextVariableHeader->PubKeyIndex = KeyIndex;\r
NextVariableHeader->MonotonicCount = MonotonicCount;\r
NextVariableHeader->Reserved = 0;\r
- VarNameOffset = sizeof (VARIABLE_HEADER);\r
+ VarNameOffset = sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
VarNameSize = StrSize (VariableName);\r
CopyMem (\r
(UINT8 *) ((UINTN)NextVariable + VarNameOffset),\r
FALSE,\r
Instance,\r
VariableGlobal->NonVolatileVariableBase + Global->NonVolatileLastVariableOffset,\r
- sizeof (VARIABLE_HEADER),\r
+ sizeof (AUTHENTICATED_VARIABLE_HEADER),\r
(UINT8 *) NextVariable\r
);\r
\r
FALSE,\r
Instance,\r
VariableGlobal->NonVolatileVariableBase + Global->NonVolatileLastVariableOffset,\r
- sizeof (VARIABLE_HEADER),\r
+ sizeof (AUTHENTICATED_VARIABLE_HEADER),\r
(UINT8 *) NextVariable\r
);\r
\r
VariableGlobal,\r
FALSE,\r
Instance,\r
- VariableGlobal->NonVolatileVariableBase + Global->NonVolatileLastVariableOffset + sizeof (VARIABLE_HEADER),\r
- (UINT32) VarSize - sizeof (VARIABLE_HEADER),\r
- (UINT8 *) NextVariable + sizeof (VARIABLE_HEADER)\r
+ VariableGlobal->NonVolatileVariableBase + Global->NonVolatileLastVariableOffset + sizeof (AUTHENTICATED_VARIABLE_HEADER),\r
+ (UINT32) VarSize - sizeof (AUTHENTICATED_VARIABLE_HEADER),\r
+ (UINT8 *) NextVariable + sizeof (AUTHENTICATED_VARIABLE_HEADER)\r
);\r
\r
if (EFI_ERROR (Status)) {\r
FALSE,\r
Instance,\r
VariableGlobal->NonVolatileVariableBase + Global->NonVolatileLastVariableOffset,\r
- sizeof (VARIABLE_HEADER),\r
+ sizeof (AUTHENTICATED_VARIABLE_HEADER),\r
(UINT8 *) NextVariable\r
);\r
\r
// has already been eliminated, so no need to delete it.\r
//\r
if (!Reclaimed && !EFI_ERROR (Status) && Variable->CurrPtr != 0) {\r
- State = ((VARIABLE_HEADER *)Variable->CurrPtr)->State;\r
+ State = ((AUTHENTICATED_VARIABLE_HEADER *)Variable->CurrPtr)->State;\r
State &= VAR_DELETED;\r
\r
Status = AccessVariableStore (\r
VariableGlobal,\r
Variable->Volatile,\r
Instance,\r
- (UINTN) &(((VARIABLE_HEADER *)Variable->CurrPtr)->State),\r
+ (UINTN) &(((AUTHENTICATED_VARIABLE_HEADER *)Variable->CurrPtr)->State),\r
sizeof (UINT8),\r
&State\r
);\r
IN ESAL_VARIABLE_GLOBAL *Global\r
)\r
{\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINTN VarDataSize;\r
- EFI_STATUS Status;\r
- VARIABLE_HEADER VariableHeader;\r
- BOOLEAN Valid;\r
- VARIABLE_GLOBAL *VariableGlobal;\r
- UINT32 Instance;\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarDataSize;\r
+ EFI_STATUS Status;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ BOOLEAN Valid;\r
+ VARIABLE_GLOBAL *VariableGlobal;\r
+ UINT32 Instance;\r
\r
if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r
return EFI_INVALID_PARAMETER;\r
IN ESAL_VARIABLE_GLOBAL *Global\r
)\r
{\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINTN VarNameSize;\r
- EFI_STATUS Status;\r
- VARIABLE_HEADER VariableHeader;\r
- VARIABLE_GLOBAL *VariableGlobal;\r
- UINT32 Instance;\r
+ VARIABLE_POINTER_TRACK Variable;\r
+ UINTN VarNameSize;\r
+ EFI_STATUS Status;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ VARIABLE_GLOBAL *VariableGlobal;\r
+ UINT32 Instance;\r
\r
if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r
return EFI_INVALID_PARAMETER;\r
// For variable for hardware error record, the size of the VariableName, including the Unicode Null\r
// in bytes plus the DataSize is limited to maximum size of PcdGet32(PcdMaxHardwareErrorVariableSize) bytes.\r
//\r
- if (StrSize (VariableName) + PayloadSize > PcdGet32(PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER)) {\r
+ if (StrSize (VariableName) + PayloadSize > PcdGet32(PcdMaxHardwareErrorVariableSize) - sizeof (AUTHENTICATED_VARIABLE_HEADER)) {\r
return EFI_INVALID_PARAMETER;\r
}\r
//\r
// For variable not for hardware error record, the size of the VariableName, including the\r
// Unicode Null in bytes plus the DataSize is limited to maximum size of PcdGet32(PcdMaxVariableSize) bytes.\r
//\r
- if (StrSize (VariableName) + PayloadSize > PcdGet32(PcdMaxVariableSize) - sizeof (VARIABLE_HEADER)) {\r
+ if (StrSize (VariableName) + PayloadSize > PcdGet32(PcdMaxVariableSize) - sizeof (AUTHENTICATED_VARIABLE_HEADER)) {\r
return EFI_INVALID_PARAMETER;\r
} \r
} \r
IN ESAL_VARIABLE_GLOBAL *Global\r
)\r
{\r
- EFI_PHYSICAL_ADDRESS Variable;\r
- EFI_PHYSICAL_ADDRESS NextVariable;\r
- UINT64 VariableSize;\r
- EFI_PHYSICAL_ADDRESS VariableStoreHeaderAddress;\r
- BOOLEAN Volatile;\r
- VARIABLE_STORE_HEADER VarStoreHeader;\r
- VARIABLE_HEADER VariableHeader;\r
- UINT64 CommonVariableTotalSize;\r
- UINT64 HwErrVariableTotalSize;\r
- VARIABLE_GLOBAL *VariableGlobal;\r
- UINT32 Instance;\r
+ EFI_PHYSICAL_ADDRESS Variable;\r
+ EFI_PHYSICAL_ADDRESS NextVariable;\r
+ UINT64 VariableSize;\r
+ EFI_PHYSICAL_ADDRESS VariableStoreHeaderAddress;\r
+ BOOLEAN Volatile;\r
+ VARIABLE_STORE_HEADER VarStoreHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER VariableHeader;\r
+ UINT64 CommonVariableTotalSize;\r
+ UINT64 HwErrVariableTotalSize;\r
+ VARIABLE_GLOBAL *VariableGlobal;\r
+ UINT32 Instance;\r
\r
CommonVariableTotalSize = 0;\r
HwErrVariableTotalSize = 0;\r
//\r
if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
*MaximumVariableStorageSize = PcdGet32(PcdHwErrStorageSize);\r
- *MaximumVariableSize = PcdGet32(PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r
+ *MaximumVariableSize = PcdGet32(PcdMaxHardwareErrorVariableSize) - sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
} else {\r
if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
ASSERT (PcdGet32(PcdHwErrStorageSize) < VarStoreHeader.Size);\r
//\r
// Let *MaximumVariableSize be PcdGet32(PcdMaxVariableSize) with the exception of the variable header size.\r
//\r
- *MaximumVariableSize = PcdGet32(PcdMaxVariableSize) - sizeof (VARIABLE_HEADER);\r
+ *MaximumVariableSize = PcdGet32(PcdMaxVariableSize) - sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
}\r
\r
//\r
*RemainingVariableStorageSize = *MaximumVariableStorageSize - CommonVariableTotalSize;\r
}\r
\r
- if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {\r
+ if (*RemainingVariableStorageSize < sizeof (AUTHENTICATED_VARIABLE_HEADER)) {\r
*MaximumVariableSize = 0;\r
- } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) < *MaximumVariableSize) {\r
- *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (VARIABLE_HEADER);\r
+ } else if ((*RemainingVariableStorageSize - sizeof (AUTHENTICATED_VARIABLE_HEADER)) < *MaximumVariableSize) {\r
+ *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (AUTHENTICATED_VARIABLE_HEADER);\r
}\r
\r
ReleaseLockOnlyAtBootTime (&VariableGlobal->VariableServicesLock);\r
EFI_STATUS Status;\r
VOID *GuidHob;\r
VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- VARIABLE_HEADER *VariableHeader;\r
+ AUTHENTICATED_VARIABLE_HEADER *VariableHeader;\r
//\r
// Get HOB variable store.\r
//\r
//\r
// Flush the HOB variable to NV Variable storage.\r
//\r
- for ( VariableHeader = (VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader + 1)\r
- ; (VariableHeader < (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VariableStoreHeader + VariableStoreHeader->Size)\r
+ for ( VariableHeader = (AUTHENTICATED_VARIABLE_HEADER *) HEADER_ALIGN (VariableStoreHeader + 1)\r
+ ; (VariableHeader < (AUTHENTICATED_VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VariableStoreHeader + VariableStoreHeader->Size)\r
&&\r
(VariableHeader->StartId == VARIABLE_DATA))\r
- ; VariableHeader = (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) (VariableHeader + 1)\r
+ ; VariableHeader = (AUTHENTICATED_VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) (VariableHeader + 1)\r
+ VariableHeader->NameSize + GET_PAD_SIZE (VariableHeader->NameSize)\r
+ VariableHeader->DataSize + GET_PAD_SIZE (VariableHeader->DataSize)\r
)\r
Instance\r
);\r
VariableSize = NextVariable - Variable;\r
- if ((((VARIABLE_HEADER *)Variable)->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
+ if ((((AUTHENTICATED_VARIABLE_HEADER *)Variable)->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r
} else {\r
mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r
/** @file\r
Internal header file for Extended SAL variable service module.\r
\r
-Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
This program and the accompanying materials \r
are licensed and made available under the terms and conditions of the BSD License \r
which accompanies this distribution. The full text of the license may be found at \r
/// The maximum size of the public key database, restricted by maximum individal EFI \r
/// varible size, and excluding the variable header and name size.\r
///\r
-#define MAX_KEYDB_SIZE (FixedPcdGet32 (PcdMaxVariableSize) - sizeof (VARIABLE_HEADER) - AUTHVAR_KEYDB_NAME_SIZE)\r
+#define MAX_KEYDB_SIZE (FixedPcdGet32 (PcdMaxVariableSize) - sizeof (AUTHENTICATED_VARIABLE_HEADER) - AUTHVAR_KEYDB_NAME_SIZE)\r
#define MAX_KEY_NUM (MAX_KEYDB_SIZE / EFI_CERT_TYPE_RSA2048_SIZE)\r
\r
///\r
**/\r
UINTN\r
DataSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
+ IN AUTHENTICATED_VARIABLE_HEADER *Variable\r
);\r
\r
/**\r
FALSE - Variable is non-volatile.\r
@param[in] Global Pointer to VARAIBLE_GLOBAL structure.\r
@param[in] Instance Instance of FV Block services.\r
- @param[out] VariableHeader Pointer to VARIABLE_HEADER for output.\r
+ @param[out] VariableHeader Pointer to AUTHENTICATED_VARIABLE_HEADER for output.\r
\r
@retval TRUE Variable header is valid.\r
@retval FALSE Variable header is not valid.\r
**/\r
BOOLEAN\r
IsValidVariableHeader (\r
- IN EFI_PHYSICAL_ADDRESS VariableAddress,\r
- IN BOOLEAN Volatile,\r
- IN VARIABLE_GLOBAL *Global,\r
- IN UINTN Instance,\r
- OUT VARIABLE_HEADER *VariableHeader OPTIONAL\r
+ IN EFI_PHYSICAL_ADDRESS VariableAddress,\r
+ IN BOOLEAN Volatile,\r
+ IN VARIABLE_GLOBAL *Global,\r
+ IN UINTN Instance,\r
+ OUT AUTHENTICATED_VARIABLE_HEADER *VariableHeader OPTIONAL\r
);\r
\r
/**\r
+++ /dev/null
-/** @file\r
- Implement ReadOnly Variable Services required by PEIM and install PEI\r
- ReadOnly Varaiable2 PPI. These services operates the non-volatile \r
- storage space.\r
-\r
-Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-\r
-#include "Variable.h"\r
-\r
-//\r
-// Module globals\r
-//\r
-EFI_PEI_READ_ONLY_VARIABLE2_PPI mVariablePpi = {\r
- PeiGetVariable,\r
- PeiGetNextVariableName\r
-};\r
-\r
-EFI_PEI_PPI_DESCRIPTOR mPpiListVariable = {\r
- (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r
- &gEfiPeiReadOnlyVariable2PpiGuid,\r
- &mVariablePpi\r
-};\r
-\r
-/**\r
- Provide the functionality of the variable services.\r
- \r
- @param FileHandle Handle of the file being invoked. \r
- Type EFI_PEI_FILE_HANDLE is defined in FfsFindNextFile().\r
- @param PeiServices General purpose services available to every PEIM.\r
-\r
- @retval EFI_SUCCESS If the interface could be successfully installed\r
- @retval Others Returned from PeiServicesInstallPpi()\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-PeimInitializeVariableServices (\r
- IN EFI_PEI_FILE_HANDLE FileHandle,\r
- IN CONST EFI_PEI_SERVICES **PeiServices\r
- )\r
-{\r
- return PeiServicesInstallPpi (&mPpiListVariable);\r
-}\r
-\r
-/**\r
-\r
- Gets the pointer to the first variable header in given variable store area.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @return Pointer to the first variable header\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetStartPointer (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- )\r
-{\r
- //\r
- // The end of variable store\r
- //\r
- return (VARIABLE_HEADER *) HEADER_ALIGN (VarStoreHeader + 1);\r
-}\r
-\r
-\r
-/**\r
- This code gets the pointer to the last variable memory pointer byte.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @return VARIABLE_HEADER* pointer to last unavailable Variable Header.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetEndPointer (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- )\r
-{\r
- //\r
- // The end of variable store\r
- //\r
- return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r
-}\r
-\r
-\r
-/**\r
- This code checks if variable header is valid or not.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @retval TRUE Variable header is valid.\r
- @retval FALSE Variable header is not valid.\r
-\r
-**/\r
-BOOLEAN\r
-IsValidVariableHeader (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- if (Variable == NULL || Variable->StartId != VARIABLE_DATA ) {\r
- return FALSE;\r
- }\r
-\r
- return TRUE;\r
-}\r
-\r
-\r
-/**\r
- This code gets the size of name of variable.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Size of variable in bytes in type UINTN.\r
-\r
-**/\r
-UINTN\r
-NameSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- if (Variable->State == (UINT8) (-1) ||\r
- Variable->DataSize == (UINT32) (-1) ||\r
- Variable->NameSize == (UINT32) (-1) ||\r
- Variable->Attributes == (UINT32) (-1)) {\r
- return 0;\r
- }\r
- return (UINTN) Variable->NameSize;\r
-}\r
-\r
-\r
-/**\r
- This code gets the size of data of variable.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Size of variable in bytes in type UINTN.\r
-\r
-**/\r
-UINTN\r
-DataSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- if (Variable->State == (UINT8) (-1) ||\r
- Variable->DataSize == (UINT32) (-1) ||\r
- Variable->NameSize == (UINT32) (-1) ||\r
- Variable->Attributes == (UINT32) (-1)) {\r
- return 0;\r
- }\r
- return (UINTN) Variable->DataSize;\r
-}\r
-\r
-/**\r
- This code gets the pointer to the variable name.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return A CHAR16* pointer to Variable Name.\r
-\r
-**/\r
-CHAR16 *\r
-GetVariableNamePtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- return (CHAR16 *) (Variable + 1);\r
-}\r
-\r
-\r
-/**\r
- This code gets the pointer to the variable data.\r
-\r
- @param Variable Pointer to the Variable Header.\r
- @param VariableHeader Pointer to the Variable Header that has consecutive content.\r
-\r
- @return A UINT8* pointer to Variable Data.\r
-\r
-**/\r
-UINT8 *\r
-GetVariableDataPtr (\r
- IN VARIABLE_HEADER *Variable,\r
- IN VARIABLE_HEADER *VariableHeader\r
- )\r
-{\r
- UINTN Value;\r
- \r
- //\r
- // Be careful about pad size for alignment\r
- //\r
- Value = (UINTN) GetVariableNamePtr (Variable);\r
- Value += NameSizeOfVariable (VariableHeader);\r
- Value += GET_PAD_SIZE (NameSizeOfVariable (VariableHeader));\r
-\r
- return (UINT8 *) Value;\r
-}\r
-\r
-\r
-/**\r
- This code gets the pointer to the next variable header.\r
-\r
- @param StoreInfo Pointer to variable store info structure.\r
- @param Variable Pointer to the Variable Header.\r
- @param VariableHeader Pointer to the Variable Header that has consecutive content.\r
-\r
- @return A VARIABLE_HEADER* pointer to next variable header.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetNextVariablePtr (\r
- IN VARIABLE_STORE_INFO *StoreInfo,\r
- IN VARIABLE_HEADER *Variable,\r
- IN VARIABLE_HEADER *VariableHeader\r
- )\r
-{\r
- EFI_PHYSICAL_ADDRESS TargetAddress;\r
- EFI_PHYSICAL_ADDRESS SpareAddress;\r
- UINTN Value;\r
-\r
- Value = (UINTN) GetVariableDataPtr (Variable, VariableHeader);\r
- Value += DataSizeOfVariable (VariableHeader);\r
- Value += GET_PAD_SIZE (DataSizeOfVariable (VariableHeader));\r
- //\r
- // Be careful about pad size for alignment\r
- //\r
- Value = HEADER_ALIGN (Value);\r
-\r
- if (StoreInfo->FtwLastWriteData != NULL) {\r
- TargetAddress = StoreInfo->FtwLastWriteData->TargetAddress;\r
- SpareAddress = StoreInfo->FtwLastWriteData->SpareAddress;\r
- if (((UINTN) Variable < (UINTN) TargetAddress) && (Value >= (UINTN) TargetAddress)) {\r
- //\r
- // Next variable is in spare block.\r
- //\r
- Value = (UINTN) SpareAddress + (Value - (UINTN) TargetAddress);\r
- }\r
- }\r
-\r
- return (VARIABLE_HEADER *) Value;\r
-}\r
-\r
-/**\r
- Get variable store status.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @retval EfiRaw Variable store is raw\r
- @retval EfiValid Variable store is valid\r
- @retval EfiInvalid Variable store is invalid\r
-\r
-**/\r
-VARIABLE_STORE_STATUS\r
-GetVariableStoreStatus (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- )\r
-{\r
- if (CompareGuid (&VarStoreHeader->Signature, &gEfiAuthenticatedVariableGuid) &&\r
- VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r
- VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r
- ) {\r
-\r
- return EfiValid;\r
- }\r
-\r
- if (((UINT32 *)(&VarStoreHeader->Signature))[0] == 0xffffffff &&\r
- ((UINT32 *)(&VarStoreHeader->Signature))[1] == 0xffffffff &&\r
- ((UINT32 *)(&VarStoreHeader->Signature))[2] == 0xffffffff &&\r
- ((UINT32 *)(&VarStoreHeader->Signature))[3] == 0xffffffff &&\r
- VarStoreHeader->Size == 0xffffffff &&\r
- VarStoreHeader->Format == 0xff &&\r
- VarStoreHeader->State == 0xff\r
- ) {\r
-\r
- return EfiRaw;\r
- } else {\r
- return EfiInvalid;\r
- }\r
-}\r
-\r
-/**\r
- Compare two variable names, one of them may be inconsecutive.\r
-\r
- @param StoreInfo Pointer to variable store info structure.\r
- @param Name1 Pointer to one variable name.\r
- @param Name2 Pointer to another variable name.\r
- @param NameSize Variable name size.\r
-\r
- @retval TRUE Name1 and Name2 are identical.\r
- @retval FALSE Name1 and Name2 are not identical.\r
-\r
-**/\r
-BOOLEAN\r
-CompareVariableName (\r
- IN VARIABLE_STORE_INFO *StoreInfo,\r
- IN CONST CHAR16 *Name1,\r
- IN CONST CHAR16 *Name2,\r
- IN UINTN NameSize\r
- )\r
-{\r
- EFI_PHYSICAL_ADDRESS TargetAddress;\r
- EFI_PHYSICAL_ADDRESS SpareAddress;\r
- UINTN PartialNameSize;\r
-\r
- if (StoreInfo->FtwLastWriteData != NULL) {\r
- TargetAddress = StoreInfo->FtwLastWriteData->TargetAddress;\r
- SpareAddress = StoreInfo->FtwLastWriteData->SpareAddress;\r
- if (((UINTN) Name1 < (UINTN) TargetAddress) && (((UINTN) Name1 + NameSize) > (UINTN) TargetAddress)) {\r
- //\r
- // Name1 is inconsecutive.\r
- //\r
- PartialNameSize = (UINTN) TargetAddress - (UINTN) Name1;\r
- //\r
- // Partial content is in NV storage.\r
- //\r
- if (CompareMem ((UINT8 *) Name1, (UINT8 *) Name2, PartialNameSize) == 0) {\r
- //\r
- // Another partial content is in spare block.\r
- //\r
- if (CompareMem ((UINT8 *) (UINTN) SpareAddress, (UINT8 *) Name2 + PartialNameSize, NameSize - PartialNameSize) == 0) {\r
- return TRUE;\r
- }\r
- }\r
- return FALSE;\r
- } else if (((UINTN) Name2 < (UINTN) TargetAddress) && (((UINTN) Name2 + NameSize) > (UINTN) TargetAddress)) {\r
- //\r
- // Name2 is inconsecutive.\r
- //\r
- PartialNameSize = (UINTN) TargetAddress - (UINTN) Name2;\r
- //\r
- // Partial content is in NV storage.\r
- //\r
- if (CompareMem ((UINT8 *) Name2, (UINT8 *) Name1, PartialNameSize) == 0) {\r
- //\r
- // Another partial content is in spare block.\r
- //\r
- if (CompareMem ((UINT8 *) (UINTN) SpareAddress, (UINT8 *) Name1 + PartialNameSize, NameSize - PartialNameSize) == 0) {\r
- return TRUE;\r
- }\r
- }\r
- return FALSE;\r
- }\r
- }\r
-\r
- //\r
- // Both Name1 and Name2 are consecutive.\r
- //\r
- if (CompareMem ((UINT8 *) Name1, (UINT8 *) Name2, NameSize) == 0) {\r
- return TRUE;\r
- }\r
- return FALSE;\r
-}\r
-\r
-/**\r
- This function compares a variable with variable entries in database.\r
-\r
- @param StoreInfo Pointer to variable store info structure.\r
- @param Variable Pointer to the variable in our database\r
- @param VariableHeader Pointer to the Variable Header that has consecutive content.\r
- @param VariableName Name of the variable to compare to 'Variable'\r
- @param VendorGuid GUID of the variable to compare to 'Variable'\r
- @param PtrTrack Variable Track Pointer structure that contains Variable Information.\r
-\r
- @retval EFI_SUCCESS Found match variable\r
- @retval EFI_NOT_FOUND Variable not found\r
-\r
-**/\r
-EFI_STATUS\r
-CompareWithValidVariable (\r
- IN VARIABLE_STORE_INFO *StoreInfo,\r
- IN VARIABLE_HEADER *Variable,\r
- IN VARIABLE_HEADER *VariableHeader,\r
- IN CONST CHAR16 *VariableName,\r
- IN CONST EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack\r
- )\r
-{\r
- VOID *Point;\r
-\r
- if (VariableName[0] == 0) {\r
- PtrTrack->CurrPtr = Variable;\r
- return EFI_SUCCESS;\r
- } else {\r
- //\r
- // Don't use CompareGuid function here for performance reasons.\r
- // Instead we compare the GUID a UINT32 at a time and branch\r
- // on the first failed comparison.\r
- //\r
- if ((((INT32 *) VendorGuid)[0] == ((INT32 *) &VariableHeader->VendorGuid)[0]) &&\r
- (((INT32 *) VendorGuid)[1] == ((INT32 *) &VariableHeader->VendorGuid)[1]) &&\r
- (((INT32 *) VendorGuid)[2] == ((INT32 *) &VariableHeader->VendorGuid)[2]) &&\r
- (((INT32 *) VendorGuid)[3] == ((INT32 *) &VariableHeader->VendorGuid)[3])\r
- ) {\r
- ASSERT (NameSizeOfVariable (VariableHeader) != 0);\r
- Point = (VOID *) GetVariableNamePtr (Variable);\r
- if (CompareVariableName (StoreInfo, VariableName, Point, NameSizeOfVariable (VariableHeader))) {\r
- PtrTrack->CurrPtr = Variable;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-/**\r
- Return the variable store header and the store info based on the Index.\r
-\r
- @param Type The type of the variable store.\r
- @param StoreInfo Return the store info.\r
-\r
- @return Pointer to the variable store header.\r
-**/\r
-VARIABLE_STORE_HEADER *\r
-GetVariableStore (\r
- IN VARIABLE_STORE_TYPE Type,\r
- OUT VARIABLE_STORE_INFO *StoreInfo\r
- )\r
-{\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
- EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- EFI_PHYSICAL_ADDRESS NvStorageBase;\r
- UINT32 NvStorageSize;\r
- FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *FtwLastWriteData;\r
- UINT32 BackUpOffset;\r
-\r
- StoreInfo->IndexTable = NULL;\r
- StoreInfo->FtwLastWriteData = NULL;\r
- VariableStoreHeader = NULL;\r
- switch (Type) {\r
- case VariableStoreTypeHob:\r
- GuidHob = GetFirstGuidHob (&gEfiAuthenticatedVariableGuid);\r
- if (GuidHob != NULL) {\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) GET_GUID_HOB_DATA (GuidHob);\r
- }\r
- break;\r
-\r
- case VariableStoreTypeNv:\r
- if (GetBootModeHob () != BOOT_IN_RECOVERY_MODE) {\r
- //\r
- // The content of NV storage for variable is not reliable in recovery boot mode.\r
- //\r
-\r
- NvStorageSize = PcdGet32 (PcdFlashNvStorageVariableSize);\r
- NvStorageBase = (EFI_PHYSICAL_ADDRESS) (PcdGet64 (PcdFlashNvStorageVariableBase64) != 0 ? \r
- PcdGet64 (PcdFlashNvStorageVariableBase64) : \r
- PcdGet32 (PcdFlashNvStorageVariableBase)\r
- );\r
- //\r
- // First let FvHeader point to NV storage base.\r
- //\r
- FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) NvStorageBase;\r
-\r
- //\r
- // Check the FTW last write data hob.\r
- //\r
- BackUpOffset = 0;\r
- GuidHob = GetFirstGuidHob (&gEdkiiFaultTolerantWriteGuid);\r
- if (GuidHob != NULL) {\r
- FtwLastWriteData = (FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *) GET_GUID_HOB_DATA (GuidHob);\r
- if (FtwLastWriteData->TargetAddress == NvStorageBase) {\r
- //\r
- // Let FvHeader point to spare block.\r
- //\r
- FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) FtwLastWriteData->SpareAddress;\r
- DEBUG ((EFI_D_INFO, "PeiVariable: NV storage is backed up in spare block: 0x%x\n", (UINTN) FtwLastWriteData->SpareAddress));\r
- } else if ((FtwLastWriteData->TargetAddress > NvStorageBase) && (FtwLastWriteData->TargetAddress < (NvStorageBase + NvStorageSize))) {\r
- StoreInfo->FtwLastWriteData = FtwLastWriteData;\r
- //\r
- // Flash NV storage from the offset is backed up in spare block.\r
- //\r
- BackUpOffset = (UINT32) (FtwLastWriteData->TargetAddress - NvStorageBase);\r
- DEBUG ((EFI_D_INFO, "PeiVariable: High partial NV storage from offset: %x is backed up in spare block: 0x%x\n", BackUpOffset, (UINTN) FtwLastWriteData->SpareAddress));\r
- //\r
- // At least one block data in flash NV storage is still valid, so still leave FvHeader point to NV storage base.\r
- //\r
- }\r
- }\r
-\r
- //\r
- // Check if the Firmware Volume is not corrupted\r
- //\r
- if ((FvHeader->Signature != EFI_FVH_SIGNATURE) || (!CompareGuid (&gEfiSystemNvDataFvGuid, &FvHeader->FileSystemGuid))) {\r
- DEBUG ((EFI_D_ERROR, "Firmware Volume for Variable Store is corrupted\n"));\r
- break;\r
- }\r
- \r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINT8 *) FvHeader + FvHeader->HeaderLength);\r
-\r
- GuidHob = GetFirstGuidHob (&gEfiVariableIndexTableGuid);\r
- if (GuidHob != NULL) {\r
- StoreInfo->IndexTable = GET_GUID_HOB_DATA (GuidHob);\r
- } else {\r
- //\r
- // If it's the first time to access variable region in flash, create a guid hob to record\r
- // VAR_ADDED type variable info.\r
- // Note that as the resource of PEI phase is limited, only store the limited number of \r
- // VAR_ADDED type variables to reduce access time.\r
- //\r
- StoreInfo->IndexTable = (VARIABLE_INDEX_TABLE *) BuildGuidHob (&gEfiVariableIndexTableGuid, sizeof (VARIABLE_INDEX_TABLE));\r
- StoreInfo->IndexTable->Length = 0;\r
- StoreInfo->IndexTable->StartPtr = GetStartPointer (VariableStoreHeader);\r
- StoreInfo->IndexTable->EndPtr = GetEndPointer (VariableStoreHeader);\r
- StoreInfo->IndexTable->GoneThrough = 0;\r
- }\r
- }\r
- break;\r
-\r
- default:\r
- ASSERT (FALSE);\r
- break;\r
- }\r
-\r
- StoreInfo->VariableStoreHeader = VariableStoreHeader;\r
- return VariableStoreHeader;\r
-}\r
-\r
-/**\r
- Get variable header that has consecutive content.\r
-\r
- @param StoreInfo Pointer to variable store info structure.\r
- @param Variable Pointer to the Variable Header.\r
- @param VariableHeader Pointer to Pointer to the Variable Header that has consecutive content.\r
-\r
- @retval TRUE Variable header is valid.\r
- @retval FALSE Variable header is not valid.\r
-\r
-**/\r
-BOOLEAN\r
-GetVariableHeader (\r
- IN VARIABLE_STORE_INFO *StoreInfo,\r
- IN VARIABLE_HEADER *Variable,\r
- OUT VARIABLE_HEADER **VariableHeader\r
- )\r
-{\r
- EFI_PHYSICAL_ADDRESS TargetAddress;\r
- EFI_PHYSICAL_ADDRESS SpareAddress;\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
- UINTN PartialHeaderSize;\r
-\r
- if (Variable == NULL) {\r
- return FALSE;\r
- }\r
-\r
- //\r
- // First assume variable header pointed by Variable is consecutive.\r
- //\r
- *VariableHeader = Variable;\r
-\r
- if (StoreInfo->FtwLastWriteData != NULL) {\r
- TargetAddress = StoreInfo->FtwLastWriteData->TargetAddress;\r
- SpareAddress = StoreInfo->FtwLastWriteData->SpareAddress;\r
- if (((UINTN) Variable > (UINTN) SpareAddress) &&\r
- (((UINTN) Variable - (UINTN) SpareAddress + (UINTN) TargetAddress) >= (UINTN) GetEndPointer (StoreInfo->VariableStoreHeader))) {\r
- //\r
- // Reach the end of variable store.\r
- //\r
- return FALSE;\r
- }\r
- if (((UINTN) Variable < (UINTN) TargetAddress) && (((UINTN) Variable + sizeof (VARIABLE_HEADER)) > (UINTN) TargetAddress)) {\r
- //\r
- // Variable header pointed by Variable is inconsecutive,\r
- // create a guid hob to combine the two partial variable header content together.\r
- //\r
- GuidHob = GetFirstGuidHob (&gEfiCallerIdGuid);\r
- if (GuidHob != NULL) {\r
- *VariableHeader = (VARIABLE_HEADER *) GET_GUID_HOB_DATA (GuidHob);\r
- } else {\r
- *VariableHeader = (VARIABLE_HEADER *) BuildGuidHob (&gEfiCallerIdGuid, sizeof (VARIABLE_HEADER));\r
- PartialHeaderSize = (UINTN) TargetAddress - (UINTN) Variable;\r
- //\r
- // Partial content is in NV storage.\r
- //\r
- CopyMem ((UINT8 *) *VariableHeader, (UINT8 *) Variable, PartialHeaderSize);\r
- //\r
- // Another partial content is in spare block.\r
- //\r
- CopyMem ((UINT8 *) *VariableHeader + PartialHeaderSize, (UINT8 *) (UINTN) SpareAddress, sizeof (VARIABLE_HEADER) - PartialHeaderSize);\r
- }\r
- }\r
- } else {\r
- if (Variable >= GetEndPointer (StoreInfo->VariableStoreHeader)) {\r
- //\r
- // Reach the end of variable store.\r
- //\r
- return FALSE;\r
- }\r
- }\r
-\r
- return IsValidVariableHeader (*VariableHeader);\r
-}\r
-\r
-/**\r
- Get variable name or data to output buffer.\r
-\r
- @param StoreInfo Pointer to variable store info structure.\r
- @param NameOrData Pointer to the variable name/data that may be inconsecutive.\r
- @param Size Variable name/data size.\r
- @param Buffer Pointer to output buffer to hold the variable name/data.\r
-\r
-**/\r
-VOID\r
-GetVariableNameOrData (\r
- IN VARIABLE_STORE_INFO *StoreInfo,\r
- IN UINT8 *NameOrData,\r
- IN UINTN Size,\r
- OUT UINT8 *Buffer\r
- )\r
-{\r
- EFI_PHYSICAL_ADDRESS TargetAddress;\r
- EFI_PHYSICAL_ADDRESS SpareAddress;\r
- UINTN PartialSize;\r
- \r
- if (StoreInfo->FtwLastWriteData != NULL) {\r
- TargetAddress = StoreInfo->FtwLastWriteData->TargetAddress;\r
- SpareAddress = StoreInfo->FtwLastWriteData->SpareAddress;\r
- if (((UINTN) NameOrData < (UINTN) TargetAddress) && (((UINTN) NameOrData + Size) > (UINTN) TargetAddress)) {\r
- //\r
- // Variable name/data is inconsecutive.\r
- //\r
- PartialSize = (UINTN) TargetAddress - (UINTN) NameOrData;\r
- //\r
- // Partial content is in NV storage.\r
- //\r
- CopyMem (Buffer, NameOrData, PartialSize);\r
- //\r
- // Another partial content is in spare block.\r
- //\r
- CopyMem (Buffer + PartialSize, (UINT8 *) (UINTN) SpareAddress, Size - PartialSize);\r
- return;\r
- }\r
- }\r
-\r
- //\r
- // Variable name/data is consecutive.\r
- //\r
- CopyMem (Buffer, NameOrData, Size);\r
-}\r
-\r
-/**\r
- Find the variable in the specified variable store.\r
-\r
- @param StoreInfo Pointer to the store info structure.\r
- @param VariableName Name of the variable to be found\r
- @param VendorGuid Vendor GUID to be found.\r
- @param PtrTrack Variable Track Pointer structure that contains Variable Information.\r
-\r
- @retval EFI_SUCCESS Variable found successfully\r
- @retval EFI_NOT_FOUND Variable not found\r
- @retval EFI_INVALID_PARAMETER Invalid variable name\r
-\r
-**/\r
-EFI_STATUS\r
-FindVariableEx (\r
- IN VARIABLE_STORE_INFO *StoreInfo,\r
- IN CONST CHAR16 *VariableName,\r
- IN CONST EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack\r
- )\r
-{\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *LastVariable;\r
- VARIABLE_HEADER *MaxIndex;\r
- UINTN Index;\r
- UINTN Offset;\r
- BOOLEAN StopRecord;\r
- VARIABLE_HEADER *InDeletedVariable;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- VARIABLE_INDEX_TABLE *IndexTable;\r
- VARIABLE_HEADER *VariableHeader;\r
-\r
- VariableStoreHeader = StoreInfo->VariableStoreHeader;\r
-\r
- if (VariableStoreHeader == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (GetVariableStoreStatus (VariableStoreHeader) != EfiValid) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- if (~VariableStoreHeader->Size == 0) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- IndexTable = StoreInfo->IndexTable;\r
- PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader);\r
- PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader);\r
-\r
- InDeletedVariable = NULL;\r
-\r
- //\r
- // No Variable Address equals zero, so 0 as initial value is safe.\r
- //\r
- MaxIndex = NULL;\r
- VariableHeader = NULL;\r
-\r
- if (IndexTable != NULL) {\r
- //\r
- // traverse the variable index table to look for varible.\r
- // The IndexTable->Index[Index] records the distance of two neighbouring VAR_ADDED type variables.\r
- //\r
- for (Offset = 0, Index = 0; Index < IndexTable->Length; Index++) {\r
- ASSERT (Index < sizeof (IndexTable->Index) / sizeof (IndexTable->Index[0]));\r
- Offset += IndexTable->Index[Index];\r
- MaxIndex = (VARIABLE_HEADER *) ((UINT8 *) IndexTable->StartPtr + Offset);\r
- GetVariableHeader (StoreInfo, MaxIndex, &VariableHeader);\r
- if (CompareWithValidVariable (StoreInfo, MaxIndex, VariableHeader, VariableName, VendorGuid, PtrTrack) == EFI_SUCCESS) {\r
- if (VariableHeader->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- InDeletedVariable = PtrTrack->CurrPtr;\r
- } else {\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
-\r
- if (IndexTable->GoneThrough != 0) {\r
- //\r
- // If the table has all the existing variables indexed, return.\r
- //\r
- PtrTrack->CurrPtr = InDeletedVariable;\r
- return (PtrTrack->CurrPtr == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;\r
- }\r
- }\r
-\r
- if (MaxIndex != NULL) {\r
- //\r
- // HOB exists but the variable cannot be found in HOB\r
- // If not found in HOB, then let's start from the MaxIndex we've found.\r
- //\r
- Variable = GetNextVariablePtr (StoreInfo, MaxIndex, VariableHeader);\r
- LastVariable = MaxIndex;\r
- } else {\r
- //\r
- // Start Pointers for the variable.\r
- // Actual Data Pointer where data can be written.\r
- //\r
- Variable = PtrTrack->StartPtr;\r
- LastVariable = PtrTrack->StartPtr;\r
- }\r
-\r
- //\r
- // Find the variable by walk through variable store\r
- //\r
- StopRecord = FALSE;\r
- while (GetVariableHeader (StoreInfo, Variable, &VariableHeader)) {\r
- if (VariableHeader->State == VAR_ADDED || VariableHeader->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- //\r
- // Record Variable in VariableIndex HOB\r
- //\r
- if ((IndexTable != NULL) && !StopRecord) {\r
- Offset = (UINTN) Variable - (UINTN) LastVariable;\r
- if ((Offset > 0x0FFFF) || (IndexTable->Length == sizeof (IndexTable->Index) / sizeof (IndexTable->Index[0]))) {\r
- //\r
- // Stop to record if the distance of two neighbouring VAR_ADDED variable is larger than the allowable scope(UINT16),\r
- // or the record buffer is full.\r
- //\r
- StopRecord = TRUE;\r
- } else {\r
- IndexTable->Index[IndexTable->Length++] = (UINT16) Offset;\r
- LastVariable = Variable;\r
- }\r
- }\r
-\r
- if (CompareWithValidVariable (StoreInfo, Variable, VariableHeader, VariableName, VendorGuid, PtrTrack) == EFI_SUCCESS) {\r
- if (VariableHeader->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- InDeletedVariable = PtrTrack->CurrPtr;\r
- } else {\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
-\r
- Variable = GetNextVariablePtr (StoreInfo, Variable, VariableHeader);\r
- }\r
- //\r
- // If gone through the VariableStore, that means we never find in Firmware any more.\r
- //\r
- if ((IndexTable != NULL) && !StopRecord) {\r
- IndexTable->GoneThrough = 1;\r
- }\r
-\r
- PtrTrack->CurrPtr = InDeletedVariable;\r
-\r
- return (PtrTrack->CurrPtr == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Find the variable in HOB and Non-Volatile variable storages.\r
-\r
- @param VariableName Name of the variable to be found\r
- @param VendorGuid Vendor GUID to be found.\r
- @param PtrTrack Variable Track Pointer structure that contains Variable Information.\r
- @param StoreInfo Return the store info.\r
-\r
- @retval EFI_SUCCESS Variable found successfully\r
- @retval EFI_NOT_FOUND Variable not found\r
- @retval EFI_INVALID_PARAMETER Invalid variable name\r
-**/\r
-EFI_STATUS\r
-FindVariable (\r
- IN CONST CHAR16 *VariableName,\r
- IN CONST EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack,\r
- OUT VARIABLE_STORE_INFO *StoreInfo\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_TYPE Type;\r
-\r
- if (VariableName[0] != 0 && VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r
- GetVariableStore (Type, StoreInfo);\r
- Status = FindVariableEx (\r
- StoreInfo,\r
- VariableName,\r
- VendorGuid, \r
- PtrTrack\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\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
-PeiGetVariable (\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
- VARIABLE_POINTER_TRACK Variable;\r
- UINTN VarDataSize;\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_INFO StoreInfo;\r
- VARIABLE_HEADER *VariableHeader;\r
-\r
- if (VariableName == NULL || VariableGuid == NULL || DataSize == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- VariableHeader = NULL;\r
-\r
- //\r
- // Find existing variable\r
- //\r
- Status = FindVariable (VariableName, VariableGuid, &Variable, &StoreInfo);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- GetVariableHeader (&StoreInfo, Variable.CurrPtr, &VariableHeader);\r
-\r
- //\r
- // Get data size\r
- //\r
- VarDataSize = DataSizeOfVariable (VariableHeader);\r
- if (*DataSize >= VarDataSize) {\r
- if (Data == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- GetVariableNameOrData (&StoreInfo, GetVariableDataPtr (Variable.CurrPtr, VariableHeader), VarDataSize, Data);\r
-\r
- if (Attributes != NULL) {\r
- *Attributes = VariableHeader->Attributes;\r
- }\r
-\r
- *DataSize = VarDataSize;\r
- return EFI_SUCCESS;\r
- } else {\r
- *DataSize = VarDataSize;\r
- return EFI_BUFFER_TOO_SMALL;\r
- }\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
- On return, the size of the variable name buffer.\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
- @param VariableGuid On entry, a pointer to an EFI_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
-PeiGetNextVariableName (\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
- VARIABLE_STORE_TYPE Type;\r
- VARIABLE_POINTER_TRACK Variable;\r
- VARIABLE_POINTER_TRACK VariableInHob;\r
- VARIABLE_POINTER_TRACK VariablePtrTrack;\r
- UINTN VarNameSize;\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r
- VARIABLE_HEADER *VariableHeader;\r
- VARIABLE_STORE_INFO StoreInfo;\r
- VARIABLE_STORE_INFO StoreInfoForNv;\r
- VARIABLE_STORE_INFO StoreInfoForHob;\r
-\r
- if (VariableName == NULL || VariableGuid == NULL || VariableNameSize == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- VariableHeader = NULL;\r
-\r
- Status = FindVariable (VariableName, VariableGuid, &Variable, &StoreInfo);\r
- if (Variable.CurrPtr == NULL || Status != EFI_SUCCESS) {\r
- return Status;\r
- }\r
-\r
- if (VariableName[0] != 0) {\r
- //\r
- // If variable name is not NULL, get next variable\r
- //\r
- GetVariableHeader (&StoreInfo, Variable.CurrPtr, &VariableHeader);\r
- Variable.CurrPtr = GetNextVariablePtr (&StoreInfo, Variable.CurrPtr, VariableHeader);\r
- }\r
-\r
- VariableStoreHeader[VariableStoreTypeHob] = GetVariableStore (VariableStoreTypeHob, &StoreInfoForHob);\r
- VariableStoreHeader[VariableStoreTypeNv] = GetVariableStore (VariableStoreTypeNv, &StoreInfoForNv);\r
-\r
- while (TRUE) {\r
- //\r
- // Switch from HOB to Non-Volatile.\r
- //\r
- while (!GetVariableHeader (&StoreInfo, Variable.CurrPtr, &VariableHeader)) {\r
- //\r
- // Find current storage index\r
- //\r
- for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r
- if ((VariableStoreHeader[Type] != NULL) && (Variable.StartPtr == GetStartPointer (VariableStoreHeader[Type]))) {\r
- break;\r
- }\r
- }\r
- ASSERT (Type < VariableStoreTypeMax);\r
- //\r
- // Switch to next storage\r
- //\r
- for (Type++; Type < VariableStoreTypeMax; Type++) {\r
- if (VariableStoreHeader[Type] != NULL) {\r
- break;\r
- }\r
- }\r
- //\r
- // Capture the case that \r
- // 1. current storage is the last one, or\r
- // 2. no further storage\r
- //\r
- if (Type == VariableStoreTypeMax) {\r
- return EFI_NOT_FOUND;\r
- }\r
- Variable.StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r
- Variable.EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r
- Variable.CurrPtr = Variable.StartPtr;\r
- GetVariableStore (Type, &StoreInfo);\r
- }\r
-\r
- if (VariableHeader->State == VAR_ADDED || VariableHeader->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- if (VariableHeader->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- //\r
- // If it is a IN_DELETED_TRANSITION variable,\r
- // and there is also a same ADDED one at the same time,\r
- // don't return it.\r
- //\r
- Status = FindVariableEx (\r
- &StoreInfo,\r
- GetVariableNamePtr (Variable.CurrPtr),\r
- &VariableHeader->VendorGuid,\r
- &VariablePtrTrack\r
- );\r
- if (!EFI_ERROR (Status) && VariablePtrTrack.CurrPtr != Variable.CurrPtr) {\r
- Variable.CurrPtr = GetNextVariablePtr (&StoreInfo, Variable.CurrPtr, VariableHeader);\r
- continue;\r
- }\r
- }\r
-\r
- //\r
- // Don't return NV variable when HOB overrides it\r
- //\r
- if ((VariableStoreHeader[VariableStoreTypeHob] != NULL) && (VariableStoreHeader[VariableStoreTypeNv] != NULL) &&\r
- (Variable.StartPtr == GetStartPointer (VariableStoreHeader[VariableStoreTypeNv]))\r
- ) {\r
- Status = FindVariableEx (\r
- &StoreInfoForHob,\r
- GetVariableNamePtr (Variable.CurrPtr),\r
- &VariableHeader->VendorGuid, \r
- &VariableInHob\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Variable.CurrPtr = GetNextVariablePtr (&StoreInfo, Variable.CurrPtr, VariableHeader);\r
- continue;\r
- }\r
- }\r
-\r
- VarNameSize = NameSizeOfVariable (VariableHeader);\r
- ASSERT (VarNameSize != 0);\r
-\r
- if (VarNameSize <= *VariableNameSize) {\r
- GetVariableNameOrData (&StoreInfo, (UINT8 *) GetVariableNamePtr (Variable.CurrPtr), VarNameSize, (UINT8 *) VariableName);\r
-\r
- CopyMem (VariableGuid, &VariableHeader->VendorGuid, sizeof (EFI_GUID));\r
-\r
- Status = EFI_SUCCESS;\r
- } else {\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
- *VariableNameSize = VarNameSize;\r
- //\r
- // Variable is found\r
- //\r
- return Status;\r
- } else {\r
- Variable.CurrPtr = GetNextVariablePtr (&StoreInfo, Variable.CurrPtr, VariableHeader);\r
- }\r
- }\r
-}\r
+++ /dev/null
-/** @file\r
- The internal header file includes the common header files, defines\r
- internal structure and functions used by PeiVariable module.\r
-\r
-Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#ifndef _PEI_VARIABLE_H_\r
-#define _PEI_VARIABLE_H_\r
-\r
-#include <PiPei.h>\r
-#include <Ppi/ReadOnlyVariable2.h>\r
-\r
-#include <Library/DebugLib.h>\r
-#include <Library/PeimEntryPoint.h>\r
-#include <Library/HobLib.h>\r
-#include <Library/PcdLib.h>\r
-#include <Library/BaseMemoryLib.h>\r
-#include <Library/PeiServicesTablePointerLib.h>\r
-#include <Library/PeiServicesLib.h>\r
-\r
-#include <Guid/AuthenticatedVariableFormat.h>\r
-#include <Guid/VariableIndexTable.h>\r
-#include <Guid/SystemNvDataGuid.h>\r
-#include <Guid/FaultTolerantWrite.h>\r
-\r
-typedef enum {\r
- VariableStoreTypeHob,\r
- VariableStoreTypeNv,\r
- VariableStoreTypeMax\r
-} VARIABLE_STORE_TYPE;\r
-\r
-typedef struct {\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- VARIABLE_INDEX_TABLE *IndexTable;\r
- //\r
- // If it is not NULL, it means there may be an inconsecutive variable whose\r
- // partial content is still in NV storage, but another partial content is backed up\r
- // in spare block.\r
- //\r
- FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *FtwLastWriteData;\r
-} VARIABLE_STORE_INFO;\r
-\r
-//\r
-// Functions\r
-//\r
-/**\r
- Provide the functionality of the variable services.\r
- \r
- @param FileHandle Handle of the file being invoked. \r
- Type EFI_PEI_FILE_HANDLE is defined in FfsFindNextFile().\r
- @param PeiServices General purpose services available to every PEIM.\r
-\r
- @retval EFI_SUCCESS If the interface could be successfully installed\r
- @retval Others Returned from PeiServicesInstallPpi()\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-PeimInitializeVariableServices (\r
- IN EFI_PEI_FILE_HANDLE FileHandle,\r
- IN CONST EFI_PEI_SERVICES **PeiServices\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
-PeiGetVariable (\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
-/**\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
-PeiGetNextVariableName (\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
-#endif\r
+++ /dev/null
-## @file\r
-# Implements ReadOnly Variable Services required by PEIM and installs PEI ReadOnly Varaiable2 PPI\r
-# This module implements ReadOnly Variable Services required by PEIM and installs PEI ReadOnly Varaiable2 PPI.\r
-#\r
-# Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-##\r
-\r
-[Defines]\r
- INF_VERSION = 0x00010005\r
- BASE_NAME = PeiVariableAuth\r
- MODULE_UNI_FILE = PeiVariableAuth.uni\r
- FILE_GUID = B1F7AF2F-2807-478c-A893-2BF4DDD1F62B\r
- MODULE_TYPE = PEIM\r
- VERSION_STRING = 1.0\r
- ENTRY_POINT = PeimInitializeVariableServices\r
-\r
-#\r
-# The following information is for reference only and not required by the build tools.\r
-#\r
-# VALID_ARCHITECTURES = IA32 X64 IPF EBC\r
-#\r
-\r
-[Sources]\r
- Variable.c\r
- Variable.h\r
-\r
-[Packages]\r
- MdePkg/MdePkg.dec\r
- MdeModulePkg/MdeModulePkg.dec\r
- SecurityPkg/SecurityPkg.dec\r
-\r
-[LibraryClasses]\r
- BaseMemoryLib\r
- PcdLib\r
- HobLib\r
- PeimEntryPoint\r
- DebugLib\r
- PeiServicesTablePointerLib\r
- PeiServicesLib\r
-\r
-[Guids]\r
- ## CONSUMES ## GUID # Variable store header\r
- ## SOMETIMES_CONSUMES ## HOB\r
- gEfiAuthenticatedVariableGuid\r
- ## SOMETIMES_PRODUCES ## HOB\r
- ## SOMETIMES_CONSUMES ## HOB\r
- gEfiVariableIndexTableGuid\r
- gEfiSystemNvDataFvGuid ## SOMETIMES_CONSUMES ## GUID\r
- gEdkiiFaultTolerantWriteGuid ## SOMETIMES_CONSUMES ## HOB\r
-\r
-[Ppis]\r
- gEfiPeiReadOnlyVariable2PpiGuid ## PRODUCES\r
-\r
-[Pcd]\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase ## SOMETIMES_CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64 ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize ## CONSUMES\r
-\r
-[Depex]\r
- gEdkiiFaultTolerantWriteGuid\r
-\r
-# [BootMode]\r
-# RECOVERY_FULL ## SOMETIMES_CONSUMES\r
-\r
-[UserExtensions.TianoCore."ExtraFiles"]\r
- PeiVariableExtra.uni
\ No newline at end of file
+++ /dev/null
-/** @file\r
- Implement authentication services for the authenticated variable\r
- service in UEFI2.2.\r
-\r
- Caution: This module requires additional review when modified.\r
- This driver will have external input - variable data. It may be input in SMM mode.\r
- This external input must be validated carefully to avoid security issue like\r
- buffer overflow, integer overflow.\r
- Variable attribute should also be checked to avoid authentication bypass.\r
- The whole SMM authentication variable design relies on the integrity of flash part and SMM.\r
- which is assumed to be protected by platform. All variable code and metadata in flash/SMM Memory\r
- may not be modified without authorization. If platform fails to protect these resources,\r
- the authentication service provided in this driver will be broken, and the behavior is undefined.\r
-\r
- ProcessVarWithPk(), ProcessVarWithKek() and ProcessVariable() are the function to do\r
- variable authentication.\r
-\r
- VerifyTimeBasedPayload() and VerifyCounterBasedPayload() are sub function to do verification.\r
- They will do basic validation for authentication data structure, then call crypto library\r
- to verify the signature.\r
-\r
-Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "Variable.h"\r
-#include "AuthService.h"\r
-\r
-///\r
-/// Global database array for scratch\r
-///\r
-UINT8 *mPubKeyStore;\r
-UINT32 mPubKeyNumber;\r
-UINT32 mMaxKeyNumber;\r
-UINT32 mMaxKeyDbSize;\r
-UINT8 *mCertDbStore;\r
-UINT32 mMaxCertDbSize;\r
-UINT32 mPlatformMode;\r
-UINT8 mVendorKeyState;\r
-\r
-EFI_GUID mSignatureSupport[] = {EFI_CERT_SHA1_GUID, EFI_CERT_SHA256_GUID, EFI_CERT_RSA2048_GUID, EFI_CERT_X509_GUID};\r
-//\r
-// Public Exponent of RSA Key.\r
-//\r
-CONST UINT8 mRsaE[] = { 0x01, 0x00, 0x01 };\r
-//\r
-// Hash context pointer\r
-//\r
-VOID *mHashCtx = NULL;\r
-\r
-//\r
-// Requirement for different signature type which have been defined in UEFI spec.\r
-// These data are used to peform SignatureList format check while setting PK/KEK variable.\r
-//\r
-EFI_SIGNATURE_ITEM mSupportSigItem[] = {\r
-//{SigType, SigHeaderSize, SigDataSize }\r
- {EFI_CERT_SHA256_GUID, 0, 32 },\r
- {EFI_CERT_RSA2048_GUID, 0, 256 },\r
- {EFI_CERT_RSA2048_SHA256_GUID, 0, 256 },\r
- {EFI_CERT_SHA1_GUID, 0, 20 },\r
- {EFI_CERT_RSA2048_SHA1_GUID, 0, 256 },\r
- {EFI_CERT_X509_GUID, 0, ((UINT32) ~0)},\r
- {EFI_CERT_SHA224_GUID, 0, 28 },\r
- {EFI_CERT_SHA384_GUID, 0, 48 },\r
- {EFI_CERT_SHA512_GUID, 0, 64 },\r
- {EFI_CERT_X509_SHA256_GUID, 0, 48 },\r
- {EFI_CERT_X509_SHA384_GUID, 0, 64 },\r
- {EFI_CERT_X509_SHA512_GUID, 0, 80 }\r
-};\r
-\r
-/**\r
- Determine whether this operation needs a physical present user.\r
-\r
- @param[in] VariableName Name of the Variable.\r
- @param[in] VendorGuid GUID of the Variable.\r
-\r
- @retval TRUE This variable is protected, only a physical present user could set this variable.\r
- @retval FALSE This variable is not protected.\r
-\r
-**/\r
-BOOLEAN\r
-NeedPhysicallyPresent(\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- if ((CompareGuid (VendorGuid, &gEfiSecureBootEnableDisableGuid) && (StrCmp (VariableName, EFI_SECURE_BOOT_ENABLE_NAME) == 0))\r
- || (CompareGuid (VendorGuid, &gEfiCustomModeEnableGuid) && (StrCmp (VariableName, EFI_CUSTOM_MODE_NAME) == 0))) {\r
- return TRUE;\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-/**\r
- Determine whether the platform is operating in Custom Secure Boot mode.\r
-\r
- @retval TRUE The platform is operating in Custom mode.\r
- @retval FALSE The platform is operating in Standard mode.\r
-\r
-**/\r
-BOOLEAN\r
-InCustomMode (\r
- VOID\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK Variable;\r
-\r
- FindVariable (EFI_CUSTOM_MODE_NAME, &gEfiCustomModeEnableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (Variable.CurrPtr != NULL && *(GetVariableDataPtr (Variable.CurrPtr)) == CUSTOM_SECURE_BOOT_MODE) {\r
- return TRUE;\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-/**\r
- Initializes for authenticated varibale service.\r
-\r
- @param[in] MaxAuthVariableSize Reflect the overhead associated with the saving\r
- of a single EFI authenticated variable with the exception\r
- of the overhead associated with the length\r
- of the string name of the EFI variable.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resources.\r
-\r
-**/\r
-EFI_STATUS\r
-AutenticatedVariableServiceInitialize (\r
- IN UINTN MaxAuthVariableSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
- VARIABLE_POINTER_TRACK PkVariable;\r
- UINT8 VarValue;\r
- UINT32 VarAttr;\r
- UINT8 *Data;\r
- UINTN DataSize;\r
- UINTN CtxSize;\r
- UINT8 SecureBootMode;\r
- UINT8 SecureBootEnable;\r
- UINT8 CustomMode;\r
- UINT32 ListSize;\r
-\r
- //\r
- // Initialize hash context.\r
- //\r
- CtxSize = Sha256GetContextSize ();\r
- mHashCtx = AllocateRuntimePool (CtxSize);\r
- if (mHashCtx == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- //\r
- // Reserve runtime buffer for public key database. The size excludes variable header and name size.\r
- //\r
- mMaxKeyDbSize = (UINT32) (MaxAuthVariableSize - sizeof (AUTHVAR_KEYDB_NAME));\r
- mMaxKeyNumber = mMaxKeyDbSize / EFI_CERT_TYPE_RSA2048_SIZE;\r
- mPubKeyStore = AllocateRuntimePool (mMaxKeyDbSize);\r
- if (mPubKeyStore == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- //\r
- // Reserve runtime buffer for certificate database. The size excludes variable header and name size.\r
- //\r
- mMaxCertDbSize = (UINT32) (MaxAuthVariableSize - sizeof (EFI_CERT_DB_NAME));\r
- mCertDbStore = AllocateRuntimePool (mMaxCertDbSize);\r
- if (mCertDbStore == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- //\r
- // Check "AuthVarKeyDatabase" variable's existence.\r
- // If it doesn't exist, create a new one with initial value of 0 and EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r
- //\r
- Status = FindVariable (\r
- AUTHVAR_KEYDB_NAME,\r
- &gEfiAuthenticatedVariableGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
-\r
- if (Variable.CurrPtr == NULL) {\r
- VarAttr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS;\r
- VarValue = 0;\r
- mPubKeyNumber = 0;\r
- Status = UpdateVariable (\r
- AUTHVAR_KEYDB_NAME,\r
- &gEfiAuthenticatedVariableGuid,\r
- &VarValue,\r
- sizeof(UINT8),\r
- VarAttr,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- } else {\r
- //\r
- // Load database in global variable for cache.\r
- //\r
- DataSize = DataSizeOfVariable (Variable.CurrPtr);\r
- Data = GetVariableDataPtr (Variable.CurrPtr);\r
- ASSERT ((DataSize != 0) && (Data != NULL));\r
- //\r
- // "AuthVarKeyDatabase" is an internal variable. Its DataSize is always ensured not to exceed mPubKeyStore buffer size(See definition before)\r
- // Therefore, there is no memory overflow in underlying CopyMem.\r
- //\r
- CopyMem (mPubKeyStore, (UINT8 *) Data, DataSize);\r
- mPubKeyNumber = (UINT32) (DataSize / EFI_CERT_TYPE_RSA2048_SIZE);\r
- }\r
-\r
- FindVariable (EFI_PLATFORM_KEY_NAME, &gEfiGlobalVariableGuid, &PkVariable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (PkVariable.CurrPtr == NULL) {\r
- DEBUG ((EFI_D_INFO, "Variable %s does not exist.\n", EFI_PLATFORM_KEY_NAME));\r
- } else {\r
- DEBUG ((EFI_D_INFO, "Variable %s exists.\n", EFI_PLATFORM_KEY_NAME));\r
- }\r
-\r
- //\r
- // Create "SetupMode" variable with BS+RT attribute set.\r
- //\r
- FindVariable (EFI_SETUP_MODE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (PkVariable.CurrPtr == NULL) {\r
- mPlatformMode = SETUP_MODE;\r
- } else {\r
- mPlatformMode = USER_MODE;\r
- }\r
- Status = UpdateVariable (\r
- EFI_SETUP_MODE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &mPlatformMode,\r
- sizeof(UINT8),\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Create "SignatureSupport" variable with BS+RT attribute set.\r
- //\r
- FindVariable (EFI_SIGNATURE_SUPPORT_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- Status = UpdateVariable (\r
- EFI_SIGNATURE_SUPPORT_NAME,\r
- &gEfiGlobalVariableGuid,\r
- mSignatureSupport,\r
- sizeof(mSignatureSupport),\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // If "SecureBootEnable" variable exists, then update "SecureBoot" variable.\r
- // If "SecureBootEnable" variable is SECURE_BOOT_ENABLE and in USER_MODE, Set "SecureBoot" variable to SECURE_BOOT_MODE_ENABLE.\r
- // If "SecureBootEnable" variable is SECURE_BOOT_DISABLE, Set "SecureBoot" variable to SECURE_BOOT_MODE_DISABLE.\r
- //\r
- SecureBootEnable = SECURE_BOOT_DISABLE;\r
- FindVariable (EFI_SECURE_BOOT_ENABLE_NAME, &gEfiSecureBootEnableDisableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (Variable.CurrPtr != NULL) {\r
- if (mPlatformMode == SETUP_MODE){\r
- //\r
- // PK is cleared in runtime. "SecureBootMode" is not updated before reboot \r
- // Delete "SecureBootMode" in SetupMode\r
- //\r
- Status = UpdateVariable (\r
- EFI_SECURE_BOOT_ENABLE_NAME,\r
- &gEfiSecureBootEnableDisableGuid,\r
- &SecureBootEnable,\r
- 0,\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- } else {\r
- SecureBootEnable = *(GetVariableDataPtr (Variable.CurrPtr));\r
- }\r
- } else if (mPlatformMode == USER_MODE) {\r
- //\r
- // "SecureBootEnable" not exist, initialize it in USER_MODE.\r
- //\r
- SecureBootEnable = SECURE_BOOT_ENABLE;\r
- Status = UpdateVariable (\r
- EFI_SECURE_BOOT_ENABLE_NAME,\r
- &gEfiSecureBootEnableDisableGuid,\r
- &SecureBootEnable,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\r
-\r
- //\r
- // Create "SecureBoot" variable with BS+RT attribute set.\r
- //\r
- if (SecureBootEnable == SECURE_BOOT_ENABLE && mPlatformMode == USER_MODE) {\r
- SecureBootMode = SECURE_BOOT_MODE_ENABLE;\r
- } else {\r
- SecureBootMode = SECURE_BOOT_MODE_DISABLE;\r
- }\r
- FindVariable (EFI_SECURE_BOOT_MODE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- Status = UpdateVariable (\r
- EFI_SECURE_BOOT_MODE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &SecureBootMode,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_SETUP_MODE_NAME, mPlatformMode));\r
- DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_SECURE_BOOT_MODE_NAME, SecureBootMode));\r
- DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_SECURE_BOOT_ENABLE_NAME, SecureBootEnable));\r
-\r
- //\r
- // Initialize "CustomMode" in STANDARD_SECURE_BOOT_MODE state.\r
- //\r
- FindVariable (EFI_CUSTOM_MODE_NAME, &gEfiCustomModeEnableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- CustomMode = STANDARD_SECURE_BOOT_MODE;\r
- Status = UpdateVariable (\r
- EFI_CUSTOM_MODE_NAME,\r
- &gEfiCustomModeEnableGuid,\r
- &CustomMode,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_CUSTOM_MODE_NAME, CustomMode));\r
-\r
- //\r
- // Check "certdb" variable's existence.\r
- // If it doesn't exist, then create a new one with\r
- // EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r
- //\r
- Status = FindVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
-\r
- if (Variable.CurrPtr == NULL) {\r
- VarAttr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;\r
- ListSize = sizeof (UINT32);\r
- Status = UpdateVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- &ListSize,\r
- sizeof (UINT32),\r
- VarAttr,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\r
-\r
- //\r
- // Check "VendorKeysNv" variable's existence and create "VendorKeys" variable accordingly.\r
- //\r
- FindVariable (EFI_VENDOR_KEYS_NV_VARIABLE_NAME, &gEfiVendorKeysNvGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (Variable.CurrPtr != NULL) {\r
- mVendorKeyState = *(GetVariableDataPtr (Variable.CurrPtr));\r
- } else {\r
- //\r
- // "VendorKeysNv" not exist, initialize it in VENDOR_KEYS_VALID state.\r
- //\r
- mVendorKeyState = VENDOR_KEYS_VALID;\r
- Status = UpdateVariable (\r
- EFI_VENDOR_KEYS_NV_VARIABLE_NAME,\r
- &gEfiVendorKeysNvGuid,\r
- &mVendorKeyState,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\r
-\r
- //\r
- // Create "VendorKeys" variable with BS+RT attribute set.\r
- //\r
- FindVariable (EFI_VENDOR_KEYS_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- Status = UpdateVariable (\r
- EFI_VENDOR_KEYS_VARIABLE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &mVendorKeyState,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_VENDOR_KEYS_VARIABLE_NAME, mVendorKeyState));\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Add public key in store and return its index.\r
-\r
- @param[in] PubKey Input pointer to Public Key data\r
- @param[in] VariableDataEntry The variable data entry\r
-\r
- @return Index of new added item\r
-\r
-**/\r
-UINT32\r
-AddPubKeyInStore (\r
- IN UINT8 *PubKey,\r
- IN VARIABLE_ENTRY_CONSISTENCY *VariableDataEntry\r
- )\r
-{\r
- EFI_STATUS Status;\r
- BOOLEAN IsFound;\r
- UINT32 Index;\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINT8 *Ptr;\r
- UINT8 *Data;\r
- UINTN DataSize;\r
- VARIABLE_ENTRY_CONSISTENCY PublicKeyEntry;\r
- UINT32 Attributes;\r
-\r
- if (PubKey == NULL) {\r
- return 0;\r
- }\r
-\r
- Status = FindVariable (\r
- AUTHVAR_KEYDB_NAME,\r
- &gEfiAuthenticatedVariableGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "Get public key database variable failure, Status = %r\n", Status));\r
- return 0;\r
- }\r
-\r
- //\r
- // Check whether the public key entry does exist.\r
- //\r
- IsFound = FALSE;\r
- for (Ptr = mPubKeyStore, Index = 1; Index <= mPubKeyNumber; Index++) {\r
- if (CompareMem (Ptr, PubKey, EFI_CERT_TYPE_RSA2048_SIZE) == 0) {\r
- IsFound = TRUE;\r
- break;\r
- }\r
- Ptr += EFI_CERT_TYPE_RSA2048_SIZE;\r
- }\r
-\r
- if (!IsFound) {\r
- //\r
- // Add public key in database.\r
- //\r
- if (mPubKeyNumber == mMaxKeyNumber) {\r
- //\r
- // Public key dadatase is full, try to reclaim invalid key.\r
- //\r
- if (AtRuntime ()) {\r
- //\r
- // NV storage can't reclaim at runtime.\r
- //\r
- return 0;\r
- }\r
-\r
- Status = Reclaim (\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
- &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- FALSE,\r
- NULL,\r
- NULL,\r
- 0,\r
- TRUE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return 0;\r
- }\r
-\r
- Status = FindVariable (\r
- AUTHVAR_KEYDB_NAME,\r
- &gEfiAuthenticatedVariableGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "Get public key database variable failure, Status = %r\n", Status));\r
- return 0;\r
- }\r
-\r
- DataSize = DataSizeOfVariable (Variable.CurrPtr);\r
- Data = GetVariableDataPtr (Variable.CurrPtr);\r
- ASSERT ((DataSize != 0) && (Data != NULL));\r
- //\r
- // "AuthVarKeyDatabase" is an internal used variable. Its DataSize is always ensured not to exceed mPubKeyStore buffer size(See definition before)\r
- // Therefore, there is no memory overflow in underlying CopyMem.\r
- //\r
- CopyMem (mPubKeyStore, (UINT8 *) Data, DataSize);\r
- mPubKeyNumber = (UINT32) (DataSize / EFI_CERT_TYPE_RSA2048_SIZE);\r
-\r
- if (mPubKeyNumber == mMaxKeyNumber) {\r
- return 0;\r
- }\r
- }\r
-\r
- //\r
- // Check the variable space for both public key and variable data.\r
- //\r
- PublicKeyEntry.VariableSize = (mPubKeyNumber + 1) * EFI_CERT_TYPE_RSA2048_SIZE;\r
- PublicKeyEntry.Guid = &gEfiAuthenticatedVariableGuid;\r
- PublicKeyEntry.Name = AUTHVAR_KEYDB_NAME;\r
- Attributes = VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS;\r
-\r
- if (!CheckRemainingSpaceForConsistency (Attributes, &PublicKeyEntry, VariableDataEntry, NULL)) {\r
- //\r
- // No enough variable space.\r
- //\r
- return 0;\r
- }\r
-\r
- CopyMem (mPubKeyStore + mPubKeyNumber * EFI_CERT_TYPE_RSA2048_SIZE, PubKey, EFI_CERT_TYPE_RSA2048_SIZE);\r
- Index = ++mPubKeyNumber;\r
- //\r
- // Update public key database variable.\r
- //\r
- Status = UpdateVariable (\r
- AUTHVAR_KEYDB_NAME,\r
- &gEfiAuthenticatedVariableGuid,\r
- mPubKeyStore,\r
- mPubKeyNumber * EFI_CERT_TYPE_RSA2048_SIZE,\r
- Attributes,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_ERROR, "Update public key database variable failure, Status = %r\n", Status));\r
- return 0;\r
- }\r
- }\r
-\r
- return Index;\r
-}\r
-\r
-/**\r
- Verify data payload with AuthInfo in EFI_CERT_TYPE_RSA2048_SHA256_GUID type.\r
- Follow the steps in UEFI2.2.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
-\r
- @param[in] Data Pointer to data with AuthInfo.\r
- @param[in] DataSize Size of Data.\r
- @param[in] PubKey Public key used for verification.\r
-\r
- @retval EFI_INVALID_PARAMETER Invalid parameter.\r
- @retval EFI_SECURITY_VIOLATION If authentication failed.\r
- @retval EFI_SUCCESS Authentication successful.\r
-\r
-**/\r
-EFI_STATUS\r
-VerifyCounterBasedPayload (\r
- IN UINT8 *Data,\r
- IN UINTN DataSize,\r
- IN UINT8 *PubKey\r
- )\r
-{\r
- BOOLEAN Status;\r
- EFI_VARIABLE_AUTHENTICATION *CertData;\r
- EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlock;\r
- UINT8 Digest[SHA256_DIGEST_SIZE];\r
- VOID *Rsa;\r
- UINTN PayloadSize;\r
-\r
- PayloadSize = DataSize - AUTHINFO_SIZE;\r
- Rsa = NULL;\r
- CertData = NULL;\r
- CertBlock = NULL;\r
-\r
- if (Data == NULL || PubKey == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- CertData = (EFI_VARIABLE_AUTHENTICATION *) Data;\r
- CertBlock = (EFI_CERT_BLOCK_RSA_2048_SHA256 *) (CertData->AuthInfo.CertData);\r
-\r
- //\r
- // wCertificateType should be WIN_CERT_TYPE_EFI_GUID.\r
- // Cert type should be EFI_CERT_TYPE_RSA2048_SHA256_GUID.\r
- //\r
- if ((CertData->AuthInfo.Hdr.wCertificateType != WIN_CERT_TYPE_EFI_GUID) ||\r
- !CompareGuid (&CertData->AuthInfo.CertType, &gEfiCertTypeRsa2048Sha256Guid)\r
- ) {\r
- //\r
- // Invalid AuthInfo type, return EFI_SECURITY_VIOLATION.\r
- //\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- //\r
- // Hash data payload with SHA256.\r
- //\r
- ZeroMem (Digest, SHA256_DIGEST_SIZE);\r
- Status = Sha256Init (mHashCtx);\r
- if (!Status) {\r
- goto Done;\r
- }\r
- Status = Sha256Update (mHashCtx, Data + AUTHINFO_SIZE, PayloadSize);\r
- if (!Status) {\r
- goto Done;\r
- }\r
- //\r
- // Hash Size.\r
- //\r
- Status = Sha256Update (mHashCtx, &PayloadSize, sizeof (UINTN));\r
- if (!Status) {\r
- goto Done;\r
- }\r
- //\r
- // Hash Monotonic Count.\r
- //\r
- Status = Sha256Update (mHashCtx, &CertData->MonotonicCount, sizeof (UINT64));\r
- if (!Status) {\r
- goto Done;\r
- }\r
- Status = Sha256Final (mHashCtx, Digest);\r
- if (!Status) {\r
- goto Done;\r
- }\r
- //\r
- // Generate & Initialize RSA Context.\r
- //\r
- Rsa = RsaNew ();\r
- ASSERT (Rsa != NULL);\r
- //\r
- // Set RSA Key Components.\r
- // NOTE: Only N and E are needed to be set as RSA public key for signature verification.\r
- //\r
- Status = RsaSetKey (Rsa, RsaKeyN, PubKey, EFI_CERT_TYPE_RSA2048_SIZE);\r
- if (!Status) {\r
- goto Done;\r
- }\r
- Status = RsaSetKey (Rsa, RsaKeyE, mRsaE, sizeof (mRsaE));\r
- if (!Status) {\r
- goto Done;\r
- }\r
- //\r
- // Verify the signature.\r
- //\r
- Status = RsaPkcs1Verify (\r
- Rsa,\r
- Digest,\r
- SHA256_DIGEST_SIZE,\r
- CertBlock->Signature,\r
- EFI_CERT_TYPE_RSA2048_SHA256_SIZE\r
- );\r
-\r
-Done:\r
- if (Rsa != NULL) {\r
- RsaFree (Rsa);\r
- }\r
- if (Status) {\r
- return EFI_SUCCESS;\r
- } else {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-}\r
-\r
-/**\r
- Update platform mode.\r
-\r
- @param[in] Mode SETUP_MODE or USER_MODE.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Update platform mode successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-UpdatePlatformMode (\r
- IN UINT32 Mode\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINT8 SecureBootMode;\r
- UINT8 SecureBootEnable;\r
- UINTN VariableDataSize;\r
-\r
- Status = FindVariable (\r
- EFI_SETUP_MODE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Update the value of SetupMode variable by a simple mem copy, this could avoid possible\r
- // variable storage reclaim at runtime.\r
- //\r
- mPlatformMode = (UINT8) Mode;\r
- CopyMem (GetVariableDataPtr (Variable.CurrPtr), &mPlatformMode, sizeof(UINT8));\r
-\r
- if (AtRuntime ()) {\r
- //\r
- // SecureBoot Variable indicates whether the platform firmware is operating\r
- // in Secure boot mode (1) or not (0), so we should not change SecureBoot\r
- // Variable in runtime.\r
- //\r
- return Status;\r
- }\r
-\r
- //\r
- // Check "SecureBoot" variable's existence.\r
- // If it doesn't exist, firmware has no capability to perform driver signing verification,\r
- // then set "SecureBoot" to 0.\r
- //\r
- Status = FindVariable (\r
- EFI_SECURE_BOOT_MODE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- //\r
- // If "SecureBoot" variable exists, then check "SetupMode" variable update.\r
- // If "SetupMode" variable is USER_MODE, "SecureBoot" variable is set to 1.\r
- // If "SetupMode" variable is SETUP_MODE, "SecureBoot" variable is set to 0.\r
- //\r
- if (Variable.CurrPtr == NULL) {\r
- SecureBootMode = SECURE_BOOT_MODE_DISABLE;\r
- } else {\r
- if (mPlatformMode == USER_MODE) {\r
- SecureBootMode = SECURE_BOOT_MODE_ENABLE;\r
- } else if (mPlatformMode == SETUP_MODE) {\r
- SecureBootMode = SECURE_BOOT_MODE_DISABLE;\r
- } else {\r
- return EFI_NOT_FOUND;\r
- }\r
- }\r
-\r
- Status = UpdateVariable (\r
- EFI_SECURE_BOOT_MODE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &SecureBootMode,\r
- sizeof(UINT8),\r
- EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Check "SecureBootEnable" variable's existence. It can enable/disable secure boot feature.\r
- //\r
- Status = FindVariable (\r
- EFI_SECURE_BOOT_ENABLE_NAME,\r
- &gEfiSecureBootEnableDisableGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
-\r
- if (SecureBootMode == SECURE_BOOT_MODE_ENABLE) {\r
- //\r
- // Create the "SecureBootEnable" variable as secure boot is enabled.\r
- //\r
- SecureBootEnable = SECURE_BOOT_ENABLE;\r
- VariableDataSize = sizeof (SecureBootEnable);\r
- } else {\r
- //\r
- // Delete the "SecureBootEnable" variable if this variable exist as "SecureBoot"\r
- // variable is not in secure boot state.\r
- //\r
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- return EFI_SUCCESS;\r
- }\r
- SecureBootEnable = SECURE_BOOT_DISABLE;\r
- VariableDataSize = 0;\r
- }\r
-\r
- Status = UpdateVariable (\r
- EFI_SECURE_BOOT_ENABLE_NAME,\r
- &gEfiSecureBootEnableDisableGuid,\r
- &SecureBootEnable,\r
- VariableDataSize,\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- return Status;\r
-}\r
-\r
-/**\r
- Check input data form to make sure it is a valid EFI_SIGNATURE_LIST for PK/KEK/db/dbx/dbt variable.\r
-\r
- @param[in] VariableName Name of Variable to be check.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Point to the variable data to be checked.\r
- @param[in] DataSize Size of Data.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid signature list format.\r
- @return EFI_SUCCESS Passed signature list format check successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-CheckSignatureListFormat(\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize\r
- )\r
-{\r
- EFI_SIGNATURE_LIST *SigList;\r
- UINTN SigDataSize;\r
- UINT32 Index;\r
- UINT32 SigCount;\r
- BOOLEAN IsPk;\r
- VOID *RsaContext;\r
- EFI_SIGNATURE_DATA *CertData;\r
- UINTN CertLen;\r
-\r
- if (DataSize == 0) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- ASSERT (VariableName != NULL && VendorGuid != NULL && Data != NULL);\r
-\r
- if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_PLATFORM_KEY_NAME) == 0)){\r
- IsPk = TRUE;\r
- } else if ((CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_KEY_EXCHANGE_KEY_NAME) == 0)) ||\r
- (CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid) &&\r
- ((StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE) == 0) || (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE1) == 0) ||\r
- (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE2) == 0)))) {\r
- IsPk = FALSE;\r
- } else {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- SigCount = 0;\r
- SigList = (EFI_SIGNATURE_LIST *) Data;\r
- SigDataSize = DataSize;\r
- RsaContext = NULL;\r
-\r
- //\r
- // Walk throuth the input signature list and check the data format.\r
- // If any signature is incorrectly formed, the whole check will fail.\r
- //\r
- while ((SigDataSize > 0) && (SigDataSize >= SigList->SignatureListSize)) {\r
- for (Index = 0; Index < (sizeof (mSupportSigItem) / sizeof (EFI_SIGNATURE_ITEM)); Index++ ) {\r
- if (CompareGuid (&SigList->SignatureType, &mSupportSigItem[Index].SigType)) {\r
- //\r
- // The value of SignatureSize should always be 16 (size of SignatureOwner\r
- // component) add the data length according to signature type.\r
- //\r
- if (mSupportSigItem[Index].SigDataSize != ((UINT32) ~0) &&\r
- (SigList->SignatureSize - sizeof (EFI_GUID)) != mSupportSigItem[Index].SigDataSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (mSupportSigItem[Index].SigHeaderSize != ((UINTN) ~0) &&\r
- SigList->SignatureHeaderSize != mSupportSigItem[Index].SigHeaderSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- break;\r
- }\r
- }\r
-\r
- if (Index == (sizeof (mSupportSigItem) / sizeof (EFI_SIGNATURE_ITEM))) {\r
- //\r
- // Undefined signature type.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (CompareGuid (&SigList->SignatureType, &gEfiCertX509Guid)) {\r
- //\r
- // Try to retrieve the RSA public key from the X.509 certificate.\r
- // If this operation fails, it's not a valid certificate.\r
- //\r
- RsaContext = RsaNew ();\r
- if (RsaContext == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- CertData = (EFI_SIGNATURE_DATA *) ((UINT8 *) SigList + sizeof (EFI_SIGNATURE_LIST) + SigList->SignatureHeaderSize);\r
- CertLen = SigList->SignatureSize - sizeof (EFI_GUID);\r
- if (!RsaGetPublicKeyFromX509 (CertData->SignatureData, CertLen, &RsaContext)) {\r
- RsaFree (RsaContext);\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- RsaFree (RsaContext);\r
- }\r
-\r
- if ((SigList->SignatureListSize - sizeof (EFI_SIGNATURE_LIST) - SigList->SignatureHeaderSize) % SigList->SignatureSize != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- SigCount += (SigList->SignatureListSize - sizeof (EFI_SIGNATURE_LIST) - SigList->SignatureHeaderSize) / SigList->SignatureSize;\r
-\r
- SigDataSize -= SigList->SignatureListSize;\r
- SigList = (EFI_SIGNATURE_LIST *) ((UINT8 *) SigList + SigList->SignatureListSize);\r
- }\r
-\r
- if (((UINTN) SigList - (UINTN) Data) != DataSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (IsPk && SigCount > 1) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Update "VendorKeys" variable to record the out of band secure boot key modification.\r
-\r
- @return EFI_SUCCESS Variable is updated successfully.\r
- @return Others Failed to update variable.\r
-\r
-**/\r
-EFI_STATUS\r
-VendorKeyIsModified (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
-\r
- if (mVendorKeyState == VENDOR_KEYS_MODIFIED) {\r
- return EFI_SUCCESS;\r
- }\r
- mVendorKeyState = VENDOR_KEYS_MODIFIED;\r
-\r
- FindVariable (EFI_VENDOR_KEYS_NV_VARIABLE_NAME, &gEfiVendorKeysNvGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- Status = UpdateVariable (\r
- EFI_VENDOR_KEYS_NV_VARIABLE_NAME,\r
- &gEfiVendorKeysNvGuid,\r
- &mVendorKeyState,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- FindVariable (EFI_VENDOR_KEYS_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- return UpdateVariable (\r
- EFI_VENDOR_KEYS_VARIABLE_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &mVendorKeyState,\r
- sizeof (UINT8),\r
- EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
-}\r
-\r
-/**\r
- Process variable with platform key for verification.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable\r
- @param[in] IsPk Indicate whether it is to process pk.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SECURITY_VIOLATION The variable does NOT pass the validation.\r
- check carried out by the firmware.\r
- @return EFI_SUCCESS Variable passed validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-ProcessVarWithPk (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes OPTIONAL,\r
- IN BOOLEAN IsPk\r
- )\r
-{\r
- EFI_STATUS Status;\r
- BOOLEAN Del;\r
- UINT8 *Payload;\r
- UINTN PayloadSize;\r
-\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0 ||\r
- (Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) == 0) {\r
- //\r
- // PK, KEK and db/dbx/dbt should set EFI_VARIABLE_NON_VOLATILE attribute and should be a time-based\r
- // authenticated variable.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- Del = FALSE;\r
- if ((InCustomMode() && UserPhysicalPresent()) || (mPlatformMode == SETUP_MODE && !IsPk)) {\r
- Payload = (UINT8 *) Data + AUTHINFO2_SIZE (Data);\r
- PayloadSize = DataSize - AUTHINFO2_SIZE (Data);\r
- if (PayloadSize == 0) {\r
- Del = TRUE;\r
- }\r
-\r
- Status = CheckSignatureListFormat(VariableName, VendorGuid, Payload, PayloadSize);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = UpdateVariable (\r
- VariableName,\r
- VendorGuid,\r
- Payload,\r
- PayloadSize,\r
- Attributes,\r
- 0,\r
- 0,\r
- Variable,\r
- &((EFI_VARIABLE_AUTHENTICATION_2 *) Data)->TimeStamp\r
- );\r
- if (EFI_ERROR(Status)) {\r
- return Status;\r
- }\r
-\r
- if ((mPlatformMode != SETUP_MODE) || IsPk) {\r
- Status = VendorKeyIsModified ();\r
- }\r
- } else if (mPlatformMode == USER_MODE) {\r
- //\r
- // Verify against X509 Cert in PK database.\r
- //\r
- Status = VerifyTimeBasedPayload (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- Variable,\r
- Attributes,\r
- AuthVarTypePk,\r
- &Del\r
- );\r
- } else {\r
- //\r
- // Verify against the certificate in data payload.\r
- //\r
- Status = VerifyTimeBasedPayload (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- Variable,\r
- Attributes,\r
- AuthVarTypePayload,\r
- &Del\r
- );\r
- }\r
-\r
- if (!EFI_ERROR(Status) && IsPk) {\r
- if (mPlatformMode == SETUP_MODE && !Del) {\r
- //\r
- // If enroll PK in setup mode, need change to user mode.\r
- //\r
- Status = UpdatePlatformMode (USER_MODE);\r
- } else if (mPlatformMode == USER_MODE && Del){\r
- //\r
- // If delete PK in user mode, need change to setup mode.\r
- //\r
- Status = UpdatePlatformMode (SETUP_MODE);\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Process variable with key exchange key for verification.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
- check carried out by the firmware.\r
- @return EFI_SUCCESS Variable pass validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-ProcessVarWithKek (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINT8 *Payload;\r
- UINTN PayloadSize;\r
-\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0 ||\r
- (Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) == 0) {\r
- //\r
- // DB, DBX and DBT should set EFI_VARIABLE_NON_VOLATILE attribute and should be a time-based\r
- // authenticated variable.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- Status = EFI_SUCCESS;\r
- if (mPlatformMode == USER_MODE && !(InCustomMode() && UserPhysicalPresent())) {\r
- //\r
- // Time-based, verify against X509 Cert KEK.\r
- //\r
- return VerifyTimeBasedPayload (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- Variable,\r
- Attributes,\r
- AuthVarTypeKek,\r
- NULL\r
- );\r
- } else {\r
- //\r
- // If in setup mode or custom secure boot mode, no authentication needed.\r
- //\r
- Payload = (UINT8 *) Data + AUTHINFO2_SIZE (Data);\r
- PayloadSize = DataSize - AUTHINFO2_SIZE (Data);\r
-\r
- Status = CheckSignatureListFormat(VariableName, VendorGuid, Payload, PayloadSize);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = UpdateVariable (\r
- VariableName,\r
- VendorGuid,\r
- Payload,\r
- PayloadSize,\r
- Attributes,\r
- 0,\r
- 0,\r
- Variable,\r
- &((EFI_VARIABLE_AUTHENTICATION_2 *) Data)->TimeStamp\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- if (mPlatformMode != SETUP_MODE) {\r
- Status = VendorKeyIsModified ();\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Check if it is to delete auth variable.\r
-\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
-\r
- @retval TRUE It is to delete auth variable.\r
- @retval FALSE It is not to delete auth variable.\r
-\r
-**/\r
-BOOLEAN\r
-IsDeleteAuthVariable (\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes\r
- )\r
-{\r
- BOOLEAN Del;\r
- UINTN PayloadSize;\r
-\r
- Del = FALSE;\r
-\r
- //\r
- // To delete a variable created with the EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\r
- // or the EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute,\r
- // SetVariable must be used with attributes matching the existing variable\r
- // and the DataSize set to the size of the AuthInfo descriptor.\r
- //\r
- if ((Variable->CurrPtr != NULL) &&\r
- (Attributes == Variable->CurrPtr->Attributes) &&\r
- ((Attributes & (EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)) != 0)) {\r
- if ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0) {\r
- PayloadSize = DataSize - AUTHINFO2_SIZE (Data);\r
- if (PayloadSize == 0) {\r
- Del = TRUE;\r
- }\r
- } else {\r
- PayloadSize = DataSize - AUTHINFO_SIZE;\r
- if (PayloadSize == 0) {\r
- Del = TRUE;\r
- }\r
- }\r
- }\r
-\r
- return Del;\r
-}\r
-\r
-/**\r
- Process variable with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS/EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
-\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_WRITE_PROTECTED Variable is write-protected and needs authentication with\r
- EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r
- @return EFI_OUT_OF_RESOURCES The Database to save the public key is full.\r
- @return EFI_SECURITY_VIOLATION The variable is with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\r
- set, but the AuthInfo does NOT pass the validation\r
- check carried out by the firmware.\r
- @return EFI_SUCCESS Variable is not write-protected or pass validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-ProcessVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes\r
- )\r
-{\r
- EFI_STATUS Status;\r
- BOOLEAN IsDeletion;\r
- BOOLEAN IsFirstTime;\r
- UINT8 *PubKey;\r
- EFI_VARIABLE_AUTHENTICATION *CertData;\r
- EFI_CERT_BLOCK_RSA_2048_SHA256 *CertBlock;\r
- UINT32 KeyIndex;\r
- UINT64 MonotonicCount;\r
- VARIABLE_ENTRY_CONSISTENCY VariableDataEntry;\r
-\r
- KeyIndex = 0;\r
- CertData = NULL;\r
- CertBlock = NULL;\r
- PubKey = NULL;\r
- IsDeletion = FALSE;\r
- Status = EFI_SUCCESS;\r
-\r
- if (IsDeleteAuthVariable (Data, DataSize, Variable, Attributes) && UserPhysicalPresent()) {\r
- //\r
- // Allow the delete operation of common authenticated variable at user physical presence.\r
- //\r
- if ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0) {\r
- Status = DeleteCertsFromDb (VariableName, VendorGuid);\r
- }\r
- if (!EFI_ERROR (Status)) {\r
- Status = UpdateVariable (\r
- VariableName,\r
- VendorGuid,\r
- NULL,\r
- 0,\r
- 0,\r
- 0,\r
- 0,\r
- Variable,\r
- NULL\r
- );\r
- }\r
- return Status;\r
- }\r
-\r
- if (NeedPhysicallyPresent (VariableName, VendorGuid) && !UserPhysicalPresent()) {\r
- //\r
- // This variable is protected, only physical present user could modify its value.\r
- //\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-\r
- //\r
- // A time-based authenticated variable and a count-based authenticated variable\r
- // can't be updated by each other.\r
- //\r
- if (Variable->CurrPtr != NULL) {\r
- if (((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) &&\r
- ((Variable->CurrPtr->Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0)) {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-\r
- if (((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0) &&\r
- ((Variable->CurrPtr->Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0)) {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- }\r
-\r
- //\r
- // Process Time-based Authenticated variable.\r
- //\r
- if ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0) {\r
- return VerifyTimeBasedPayload (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- Variable,\r
- Attributes,\r
- AuthVarTypePriv,\r
- NULL\r
- );\r
- }\r
-\r
- //\r
- // Determine if first time SetVariable with the EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS.\r
- //\r
- if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) != 0) {\r
- //\r
- // Determine current operation type.\r
- //\r
- if (DataSize == AUTHINFO_SIZE) {\r
- IsDeletion = TRUE;\r
- }\r
- //\r
- // Determine whether this is the first time with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r
- //\r
- if (Variable->CurrPtr == NULL) {\r
- IsFirstTime = TRUE;\r
- } else if ((Variable->CurrPtr->Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) == 0) {\r
- IsFirstTime = TRUE;\r
- } else {\r
- KeyIndex = Variable->CurrPtr->PubKeyIndex;\r
- IsFirstTime = FALSE;\r
- }\r
- } else if ((Variable->CurrPtr != NULL) &&\r
- ((Variable->CurrPtr->Attributes & (EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)) != 0)\r
- ) {\r
- //\r
- // If the variable is already write-protected, it always needs authentication before update.\r
- //\r
- return EFI_WRITE_PROTECTED;\r
- } else {\r
- //\r
- // If without EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS, set and attributes collision.\r
- // That means it is not authenticated variable, just update variable as usual.\r
- //\r
- Status = UpdateVariable (VariableName, VendorGuid, Data, DataSize, Attributes, 0, 0, Variable, NULL);\r
- return Status;\r
- }\r
-\r
- //\r
- // Get PubKey and check Monotonic Count value corresponding to the variable.\r
- //\r
- CertData = (EFI_VARIABLE_AUTHENTICATION *) Data;\r
- CertBlock = (EFI_CERT_BLOCK_RSA_2048_SHA256 *) (CertData->AuthInfo.CertData);\r
- PubKey = CertBlock->PublicKey;\r
-\r
- //\r
- // Update Monotonic Count value.\r
- //\r
- MonotonicCount = CertData->MonotonicCount;\r
-\r
- if (!IsFirstTime) {\r
- //\r
- // 2 cases need to check here\r
- // 1. Internal PubKey variable. PubKeyIndex is always 0\r
- // 2. Other counter-based AuthVariable. Check input PubKey.\r
- //\r
- if (KeyIndex == 0 || CompareMem (PubKey, mPubKeyStore + (KeyIndex - 1) * EFI_CERT_TYPE_RSA2048_SIZE, EFI_CERT_TYPE_RSA2048_SIZE) != 0) {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- //\r
- // Compare the current monotonic count and ensure that it is greater than the last SetVariable\r
- // operation with the EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS attribute set.\r
- //\r
- if (CertData->MonotonicCount <= Variable->CurrPtr->MonotonicCount) {\r
- //\r
- // Monotonic count check fail, suspicious replay attack, return EFI_SECURITY_VIOLATION.\r
- //\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- }\r
- //\r
- // Verify the certificate in Data payload.\r
- //\r
- Status = VerifyCounterBasedPayload (Data, DataSize, PubKey);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Now, the signature has been verified!\r
- //\r
- if (IsFirstTime && !IsDeletion) {\r
- VariableDataEntry.VariableSize = DataSize - AUTHINFO_SIZE;\r
- VariableDataEntry.Guid = VendorGuid;\r
- VariableDataEntry.Name = VariableName;\r
-\r
- //\r
- // Update public key database variable if need.\r
- //\r
- KeyIndex = AddPubKeyInStore (PubKey, &VariableDataEntry);\r
- if (KeyIndex == 0) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- }\r
-\r
- //\r
- // Verification pass.\r
- //\r
- return UpdateVariable (VariableName, VendorGuid, (UINT8*)Data + AUTHINFO_SIZE, DataSize - AUTHINFO_SIZE, Attributes, KeyIndex, MonotonicCount, Variable, NULL);\r
-}\r
-\r
-/**\r
- Merge two buffers which formatted as EFI_SIGNATURE_LIST. Only the new EFI_SIGNATURE_DATA\r
- will be appended to the original EFI_SIGNATURE_LIST, duplicate EFI_SIGNATURE_DATA\r
- will be ignored.\r
-\r
- @param[in, out] Data Pointer to original EFI_SIGNATURE_LIST.\r
- @param[in] DataSize Size of Data buffer.\r
- @param[in] FreeBufSize Size of free data buffer\r
- @param[in] NewData Pointer to new EFI_SIGNATURE_LIST to be appended.\r
- @param[in] NewDataSize Size of NewData buffer.\r
- @param[out] MergedBufSize Size of the merged buffer\r
-\r
- @return EFI_BUFFER_TOO_SMALL if input Data buffer overflowed\r
-\r
-**/\r
-EFI_STATUS\r
-AppendSignatureList (\r
- IN OUT VOID *Data,\r
- IN UINTN DataSize,\r
- IN UINTN FreeBufSize,\r
- IN VOID *NewData,\r
- IN UINTN NewDataSize,\r
- OUT UINTN *MergedBufSize\r
- )\r
-{\r
- EFI_SIGNATURE_LIST *CertList;\r
- EFI_SIGNATURE_DATA *Cert;\r
- UINTN CertCount;\r
- EFI_SIGNATURE_LIST *NewCertList;\r
- EFI_SIGNATURE_DATA *NewCert;\r
- UINTN NewCertCount;\r
- UINTN Index;\r
- UINTN Index2;\r
- UINTN Size;\r
- UINT8 *Tail;\r
- UINTN CopiedCount;\r
- UINTN SignatureListSize;\r
- BOOLEAN IsNewCert;\r
-\r
- Tail = (UINT8 *) Data + DataSize;\r
-\r
- NewCertList = (EFI_SIGNATURE_LIST *) NewData;\r
- while ((NewDataSize > 0) && (NewDataSize >= NewCertList->SignatureListSize)) {\r
- NewCert = (EFI_SIGNATURE_DATA *) ((UINT8 *) NewCertList + sizeof (EFI_SIGNATURE_LIST) + NewCertList->SignatureHeaderSize);\r
- NewCertCount = (NewCertList->SignatureListSize - sizeof (EFI_SIGNATURE_LIST) - NewCertList->SignatureHeaderSize) / NewCertList->SignatureSize;\r
-\r
- CopiedCount = 0;\r
- for (Index = 0; Index < NewCertCount; Index++) {\r
- IsNewCert = TRUE;\r
-\r
- Size = DataSize;\r
- CertList = (EFI_SIGNATURE_LIST *) Data;\r
- while ((Size > 0) && (Size >= CertList->SignatureListSize)) {\r
- if (CompareGuid (&CertList->SignatureType, &NewCertList->SignatureType) &&\r
- (CertList->SignatureSize == NewCertList->SignatureSize)) {\r
- Cert = (EFI_SIGNATURE_DATA *) ((UINT8 *) CertList + sizeof (EFI_SIGNATURE_LIST) + CertList->SignatureHeaderSize);\r
- CertCount = (CertList->SignatureListSize - sizeof (EFI_SIGNATURE_LIST) - CertList->SignatureHeaderSize) / CertList->SignatureSize;\r
- for (Index2 = 0; Index2 < CertCount; Index2++) {\r
- //\r
- // Iterate each Signature Data in this Signature List.\r
- //\r
- if (CompareMem (NewCert, Cert, CertList->SignatureSize) == 0) {\r
- IsNewCert = FALSE;\r
- break;\r
- }\r
- Cert = (EFI_SIGNATURE_DATA *) ((UINT8 *) Cert + CertList->SignatureSize);\r
- }\r
- }\r
-\r
- if (!IsNewCert) {\r
- break;\r
- }\r
- Size -= CertList->SignatureListSize;\r
- CertList = (EFI_SIGNATURE_LIST *) ((UINT8 *) CertList + CertList->SignatureListSize);\r
- }\r
-\r
- if (IsNewCert) {\r
- //\r
- // New EFI_SIGNATURE_DATA, append it.\r
- //\r
- if (CopiedCount == 0) {\r
- if (FreeBufSize < sizeof (EFI_SIGNATURE_LIST) + NewCertList->SignatureHeaderSize) {\r
- return EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
- //\r
- // Copy EFI_SIGNATURE_LIST header for only once.\r
- //\r
-\r
- CopyMem (Tail, NewCertList, sizeof (EFI_SIGNATURE_LIST) + NewCertList->SignatureHeaderSize);\r
- Tail = Tail + sizeof (EFI_SIGNATURE_LIST) + NewCertList->SignatureHeaderSize;\r
- FreeBufSize -= sizeof (EFI_SIGNATURE_LIST) + NewCertList->SignatureHeaderSize;\r
- }\r
-\r
- if (FreeBufSize < NewCertList->SignatureSize) {\r
- return EFI_BUFFER_TOO_SMALL;\r
- }\r
- CopyMem (Tail, NewCert, NewCertList->SignatureSize);\r
- Tail += NewCertList->SignatureSize;\r
- FreeBufSize -= NewCertList->SignatureSize;\r
- CopiedCount++;\r
- }\r
-\r
- NewCert = (EFI_SIGNATURE_DATA *) ((UINT8 *) NewCert + NewCertList->SignatureSize);\r
- }\r
-\r
- //\r
- // Update SignatureListSize in newly appended EFI_SIGNATURE_LIST.\r
- //\r
- if (CopiedCount != 0) {\r
- SignatureListSize = sizeof (EFI_SIGNATURE_LIST) + NewCertList->SignatureHeaderSize + (CopiedCount * NewCertList->SignatureSize);\r
- CertList = (EFI_SIGNATURE_LIST *) (Tail - SignatureListSize);\r
- CertList->SignatureListSize = (UINT32) SignatureListSize;\r
- }\r
-\r
- NewDataSize -= NewCertList->SignatureListSize;\r
- NewCertList = (EFI_SIGNATURE_LIST *) ((UINT8 *) NewCertList + NewCertList->SignatureListSize);\r
- }\r
-\r
- *MergedBufSize = (Tail - (UINT8 *) Data);\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Compare two EFI_TIME data.\r
-\r
-\r
- @param FirstTime A pointer to the first EFI_TIME data.\r
- @param SecondTime A pointer to the second EFI_TIME data.\r
-\r
- @retval TRUE The FirstTime is not later than the SecondTime.\r
- @retval FALSE The FirstTime is later than the SecondTime.\r
-\r
-**/\r
-BOOLEAN\r
-CompareTimeStamp (\r
- IN EFI_TIME *FirstTime,\r
- IN EFI_TIME *SecondTime\r
- )\r
-{\r
- if (FirstTime->Year != SecondTime->Year) {\r
- return (BOOLEAN) (FirstTime->Year < SecondTime->Year);\r
- } else if (FirstTime->Month != SecondTime->Month) {\r
- return (BOOLEAN) (FirstTime->Month < SecondTime->Month);\r
- } else if (FirstTime->Day != SecondTime->Day) {\r
- return (BOOLEAN) (FirstTime->Day < SecondTime->Day);\r
- } else if (FirstTime->Hour != SecondTime->Hour) {\r
- return (BOOLEAN) (FirstTime->Hour < SecondTime->Hour);\r
- } else if (FirstTime->Minute != SecondTime->Minute) {\r
- return (BOOLEAN) (FirstTime->Minute < SecondTime->Minute);\r
- }\r
-\r
- return (BOOLEAN) (FirstTime->Second <= SecondTime->Second);\r
-}\r
-\r
-/**\r
- Find matching signer's certificates for common authenticated variable\r
- by corresponding VariableName and VendorGuid from "certdb".\r
-\r
- The data format of "certdb":\r
- //\r
- // UINT32 CertDbListSize;\r
- // /// AUTH_CERT_DB_DATA Certs1[];\r
- // /// AUTH_CERT_DB_DATA Certs2[];\r
- // /// ...\r
- // /// AUTH_CERT_DB_DATA Certsn[];\r
- //\r
-\r
- @param[in] VariableName Name of authenticated Variable.\r
- @param[in] VendorGuid Vendor GUID of authenticated Variable.\r
- @param[in] Data Pointer to variable "certdb".\r
- @param[in] DataSize Size of variable "certdb".\r
- @param[out] CertOffset Offset of matching CertData, from starting of Data.\r
- @param[out] CertDataSize Length of CertData in bytes.\r
- @param[out] CertNodeOffset Offset of matching AUTH_CERT_DB_DATA , from\r
- starting of Data.\r
- @param[out] CertNodeSize Length of AUTH_CERT_DB_DATA in bytes.\r
-\r
- @retval EFI_INVALID_PARAMETER Any input parameter is invalid.\r
- @retval EFI_NOT_FOUND Fail to find matching certs.\r
- @retval EFI_SUCCESS Find matching certs and output parameters.\r
-\r
-**/\r
-EFI_STATUS\r
-FindCertsFromDb (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT8 *Data,\r
- IN UINTN DataSize,\r
- OUT UINT32 *CertOffset, OPTIONAL\r
- OUT UINT32 *CertDataSize, OPTIONAL\r
- OUT UINT32 *CertNodeOffset,OPTIONAL\r
- OUT UINT32 *CertNodeSize OPTIONAL\r
- )\r
-{\r
- UINT32 Offset;\r
- AUTH_CERT_DB_DATA *Ptr;\r
- UINT32 CertSize;\r
- UINT32 NameSize;\r
- UINT32 NodeSize;\r
- UINT32 CertDbListSize;\r
-\r
- if ((VariableName == NULL) || (VendorGuid == NULL) || (Data == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Check whether DataSize matches recorded CertDbListSize.\r
- //\r
- if (DataSize < sizeof (UINT32)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- CertDbListSize = ReadUnaligned32 ((UINT32 *) Data);\r
-\r
- if (CertDbListSize != (UINT32) DataSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- Offset = sizeof (UINT32);\r
-\r
- //\r
- // Get corresponding certificates by VendorGuid and VariableName.\r
- //\r
- while (Offset < (UINT32) DataSize) {\r
- Ptr = (AUTH_CERT_DB_DATA *) (Data + Offset);\r
- //\r
- // Check whether VendorGuid matches.\r
- //\r
- if (CompareGuid (&Ptr->VendorGuid, VendorGuid)) {\r
- NodeSize = ReadUnaligned32 (&Ptr->CertNodeSize);\r
- NameSize = ReadUnaligned32 (&Ptr->NameSize);\r
- CertSize = ReadUnaligned32 (&Ptr->CertDataSize);\r
-\r
- if (NodeSize != sizeof (EFI_GUID) + sizeof (UINT32) * 3 + CertSize +\r
- sizeof (CHAR16) * NameSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- Offset = Offset + sizeof (EFI_GUID) + sizeof (UINT32) * 3;\r
- //\r
- // Check whether VariableName matches.\r
- //\r
- if ((NameSize == StrLen (VariableName)) &&\r
- (CompareMem (Data + Offset, VariableName, NameSize * sizeof (CHAR16)) == 0)) {\r
- Offset = Offset + NameSize * sizeof (CHAR16);\r
-\r
- if (CertOffset != NULL) {\r
- *CertOffset = Offset;\r
- }\r
-\r
- if (CertDataSize != NULL) {\r
- *CertDataSize = CertSize;\r
- }\r
-\r
- if (CertNodeOffset != NULL) {\r
- *CertNodeOffset = (UINT32) ((UINT8 *) Ptr - Data);\r
- }\r
-\r
- if (CertNodeSize != NULL) {\r
- *CertNodeSize = NodeSize;\r
- }\r
-\r
- return EFI_SUCCESS;\r
- } else {\r
- Offset = Offset + NameSize * sizeof (CHAR16) + CertSize;\r
- }\r
- } else {\r
- NodeSize = ReadUnaligned32 (&Ptr->CertNodeSize);\r
- Offset = Offset + NodeSize;\r
- }\r
- }\r
-\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-/**\r
- Retrieve signer's certificates for common authenticated variable\r
- by corresponding VariableName and VendorGuid from "certdb".\r
-\r
- @param[in] VariableName Name of authenticated Variable.\r
- @param[in] VendorGuid Vendor GUID of authenticated Variable.\r
- @param[out] CertData Pointer to signer's certificates.\r
- @param[out] CertDataSize Length of CertData in bytes.\r
-\r
- @retval EFI_INVALID_PARAMETER Any input parameter is invalid.\r
- @retval EFI_NOT_FOUND Fail to find "certdb" or matching certs.\r
- @retval EFI_SUCCESS Get signer's certificates successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-GetCertsFromDb (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT UINT8 **CertData,\r
- OUT UINT32 *CertDataSize\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK CertDbVariable;\r
- EFI_STATUS Status;\r
- UINT8 *Data;\r
- UINTN DataSize;\r
- UINT32 CertOffset;\r
-\r
- if ((VariableName == NULL) || (VendorGuid == NULL) || (CertData == NULL) || (CertDataSize == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Get variable "certdb".\r
- //\r
- Status = FindVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- &CertDbVariable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- DataSize = DataSizeOfVariable (CertDbVariable.CurrPtr);\r
- Data = GetVariableDataPtr (CertDbVariable.CurrPtr);\r
- if ((DataSize == 0) || (Data == NULL)) {\r
- ASSERT (FALSE);\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- Status = FindCertsFromDb (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- &CertOffset,\r
- CertDataSize,\r
- NULL,\r
- NULL\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- *CertData = Data + CertOffset;\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Delete matching signer's certificates when deleting common authenticated\r
- variable by corresponding VariableName and VendorGuid from "certdb".\r
-\r
- @param[in] VariableName Name of authenticated Variable.\r
- @param[in] VendorGuid Vendor GUID of authenticated Variable.\r
-\r
- @retval EFI_INVALID_PARAMETER Any input parameter is invalid.\r
- @retval EFI_NOT_FOUND Fail to find "certdb" or matching certs.\r
- @retval EFI_OUT_OF_RESOURCES The operation is failed due to lack of resources.\r
- @retval EFI_SUCCESS The operation is completed successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-DeleteCertsFromDb (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK CertDbVariable;\r
- EFI_STATUS Status;\r
- UINT8 *Data;\r
- UINTN DataSize;\r
- UINT32 VarAttr;\r
- UINT32 CertNodeOffset;\r
- UINT32 CertNodeSize;\r
- UINT8 *NewCertDb;\r
- UINT32 NewCertDbSize;\r
-\r
- if ((VariableName == NULL) || (VendorGuid == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Get variable "certdb".\r
- //\r
- Status = FindVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- &CertDbVariable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- DataSize = DataSizeOfVariable (CertDbVariable.CurrPtr);\r
- Data = GetVariableDataPtr (CertDbVariable.CurrPtr);\r
- if ((DataSize == 0) || (Data == NULL)) {\r
- ASSERT (FALSE);\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- if (DataSize == sizeof (UINT32)) {\r
- //\r
- // There is no certs in certdb.\r
- //\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Get corresponding cert node from certdb.\r
- //\r
- Status = FindCertsFromDb (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- NULL,\r
- NULL,\r
- &CertNodeOffset,\r
- &CertNodeSize\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- if (DataSize < (CertNodeOffset + CertNodeSize)) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- //\r
- // Construct new data content of variable "certdb".\r
- //\r
- NewCertDbSize = (UINT32) DataSize - CertNodeSize;\r
- NewCertDb = (UINT8*) mCertDbStore;\r
-\r
- //\r
- // Copy the DB entries before deleting node.\r
- //\r
- CopyMem (NewCertDb, Data, CertNodeOffset);\r
- //\r
- // Update CertDbListSize.\r
- //\r
- CopyMem (NewCertDb, &NewCertDbSize, sizeof (UINT32));\r
- //\r
- // Copy the DB entries after deleting node.\r
- //\r
- if (DataSize > (CertNodeOffset + CertNodeSize)) {\r
- CopyMem (\r
- NewCertDb + CertNodeOffset,\r
- Data + CertNodeOffset + CertNodeSize,\r
- DataSize - CertNodeOffset - CertNodeSize\r
- );\r
- }\r
-\r
- //\r
- // Set "certdb".\r
- //\r
- VarAttr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;\r
- Status = UpdateVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- NewCertDb,\r
- NewCertDbSize,\r
- VarAttr,\r
- 0,\r
- 0,\r
- &CertDbVariable,\r
- NULL\r
- );\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Insert signer's certificates for common authenticated variable with VariableName\r
- and VendorGuid in AUTH_CERT_DB_DATA to "certdb".\r
-\r
- @param[in] VariableName Name of authenticated Variable.\r
- @param[in] VendorGuid Vendor GUID of authenticated Variable.\r
- @param[in] CertData Pointer to signer's certificates.\r
- @param[in] CertDataSize Length of CertData in bytes.\r
-\r
- @retval EFI_INVALID_PARAMETER Any input parameter is invalid.\r
- @retval EFI_ACCESS_DENIED An AUTH_CERT_DB_DATA entry with same VariableName\r
- and VendorGuid already exists.\r
- @retval EFI_OUT_OF_RESOURCES The operation is failed due to lack of resources.\r
- @retval EFI_SUCCESS Insert an AUTH_CERT_DB_DATA entry to "certdb"\r
-\r
-**/\r
-EFI_STATUS\r
-InsertCertsToDb (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT8 *CertData,\r
- IN UINTN CertDataSize\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK CertDbVariable;\r
- EFI_STATUS Status;\r
- UINT8 *Data;\r
- UINTN DataSize;\r
- UINT32 VarAttr;\r
- UINT8 *NewCertDb;\r
- UINT32 NewCertDbSize;\r
- UINT32 CertNodeSize;\r
- UINT32 NameSize;\r
- AUTH_CERT_DB_DATA *Ptr;\r
-\r
- if ((VariableName == NULL) || (VendorGuid == NULL) || (CertData == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Get variable "certdb".\r
- //\r
- Status = FindVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- &CertDbVariable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- DataSize = DataSizeOfVariable (CertDbVariable.CurrPtr);\r
- Data = GetVariableDataPtr (CertDbVariable.CurrPtr);\r
- if ((DataSize == 0) || (Data == NULL)) {\r
- ASSERT (FALSE);\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- //\r
- // Find whether matching cert node already exists in "certdb".\r
- // If yes return error.\r
- //\r
- Status = FindCertsFromDb (\r
- VariableName,\r
- VendorGuid,\r
- Data,\r
- DataSize,\r
- NULL,\r
- NULL,\r
- NULL,\r
- NULL\r
- );\r
-\r
- if (!EFI_ERROR (Status)) {\r
- ASSERT (FALSE);\r
- return EFI_ACCESS_DENIED;\r
- }\r
-\r
- //\r
- // Construct new data content of variable "certdb".\r
- //\r
- NameSize = (UINT32) StrLen (VariableName);\r
- CertNodeSize = sizeof (AUTH_CERT_DB_DATA) + (UINT32) CertDataSize + NameSize * sizeof (CHAR16);\r
- NewCertDbSize = (UINT32) DataSize + CertNodeSize;\r
- if (NewCertDbSize > mMaxCertDbSize) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- NewCertDb = (UINT8*) mCertDbStore;\r
-\r
- //\r
- // Copy the DB entries before deleting node.\r
- //\r
- CopyMem (NewCertDb, Data, DataSize);\r
- //\r
- // Update CertDbListSize.\r
- //\r
- CopyMem (NewCertDb, &NewCertDbSize, sizeof (UINT32));\r
- //\r
- // Construct new cert node.\r
- //\r
- Ptr = (AUTH_CERT_DB_DATA *) (NewCertDb + DataSize);\r
- CopyGuid (&Ptr->VendorGuid, VendorGuid);\r
- CopyMem (&Ptr->CertNodeSize, &CertNodeSize, sizeof (UINT32));\r
- CopyMem (&Ptr->NameSize, &NameSize, sizeof (UINT32));\r
- CopyMem (&Ptr->CertDataSize, &CertDataSize, sizeof (UINT32));\r
-\r
- CopyMem (\r
- (UINT8 *) Ptr + sizeof (AUTH_CERT_DB_DATA),\r
- VariableName,\r
- NameSize * sizeof (CHAR16)\r
- );\r
-\r
- CopyMem (\r
- (UINT8 *) Ptr + sizeof (AUTH_CERT_DB_DATA) + NameSize * sizeof (CHAR16),\r
- CertData,\r
- CertDataSize\r
- );\r
-\r
- //\r
- // Set "certdb".\r
- //\r
- VarAttr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;\r
- Status = UpdateVariable (\r
- EFI_CERT_DB_NAME,\r
- &gEfiCertDbGuid,\r
- NewCertDb,\r
- NewCertDbSize,\r
- VarAttr,\r
- 0,\r
- 0,\r
- &CertDbVariable,\r
- NULL\r
- );\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
- @param[in] AuthVarType Verify against PK, KEK database, private database or certificate in data payload.\r
- @param[out] VarDel Delete the variable or not.\r
-\r
- @retval EFI_INVALID_PARAMETER Invalid parameter.\r
- @retval EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
- check carried out by the firmware.\r
- @retval EFI_OUT_OF_RESOURCES Failed to process variable due to lack\r
- of resources.\r
- @retval EFI_SUCCESS Variable pass validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-VerifyTimeBasedPayload (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes,\r
- IN AUTHVAR_TYPE AuthVarType,\r
- OUT BOOLEAN *VarDel\r
- )\r
-{\r
- UINT8 *RootCert;\r
- UINT8 *SigData;\r
- UINT8 *PayloadPtr;\r
- UINTN RootCertSize;\r
- UINTN Index;\r
- UINTN CertCount;\r
- UINTN PayloadSize;\r
- UINT32 Attr;\r
- UINT32 SigDataSize;\r
- UINT32 KekDataSize;\r
- BOOLEAN VerifyStatus;\r
- EFI_STATUS Status;\r
- EFI_SIGNATURE_LIST *CertList;\r
- EFI_SIGNATURE_DATA *Cert;\r
- VARIABLE_POINTER_TRACK KekVariable;\r
- EFI_VARIABLE_AUTHENTICATION_2 *CertData;\r
- UINT8 *NewData;\r
- UINTN NewDataSize;\r
- VARIABLE_POINTER_TRACK PkVariable;\r
- UINT8 *Buffer;\r
- UINTN Length;\r
- UINT8 *SignerCerts;\r
- UINTN CertStackSize;\r
- UINT8 *CertsInCertDb;\r
- UINT32 CertsSizeinDb;\r
-\r
- VerifyStatus = FALSE;\r
- CertData = NULL;\r
- NewData = NULL;\r
- Attr = Attributes;\r
- SignerCerts = NULL;\r
- RootCert = NULL;\r
- CertsInCertDb = NULL;\r
-\r
- //\r
- // When the attribute EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS is\r
- // set, then the Data buffer shall begin with an instance of a complete (and serialized)\r
- // EFI_VARIABLE_AUTHENTICATION_2 descriptor. The descriptor shall be followed by the new\r
- // variable value and DataSize shall reflect the combined size of the descriptor and the new\r
- // variable value. The authentication descriptor is not part of the variable data and is not\r
- // returned by subsequent calls to GetVariable().\r
- //\r
- CertData = (EFI_VARIABLE_AUTHENTICATION_2 *) Data;\r
-\r
- //\r
- // Verify that Pad1, Nanosecond, TimeZone, Daylight and Pad2 components of the\r
- // TimeStamp value are set to zero.\r
- //\r
- if ((CertData->TimeStamp.Pad1 != 0) ||\r
- (CertData->TimeStamp.Nanosecond != 0) ||\r
- (CertData->TimeStamp.TimeZone != 0) ||\r
- (CertData->TimeStamp.Daylight != 0) ||\r
- (CertData->TimeStamp.Pad2 != 0)) {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-\r
- if ((Variable->CurrPtr != NULL) && ((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0)) {\r
- if (CompareTimeStamp (&CertData->TimeStamp, &Variable->CurrPtr->TimeStamp)) {\r
- //\r
- // TimeStamp check fail, suspicious replay attack, return EFI_SECURITY_VIOLATION.\r
- //\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- }\r
-\r
- //\r
- // wCertificateType should be WIN_CERT_TYPE_EFI_GUID.\r
- // Cert type should be EFI_CERT_TYPE_PKCS7_GUID.\r
- //\r
- if ((CertData->AuthInfo.Hdr.wCertificateType != WIN_CERT_TYPE_EFI_GUID) ||\r
- !CompareGuid (&CertData->AuthInfo.CertType, &gEfiCertPkcs7Guid)) {\r
- //\r
- // Invalid AuthInfo type, return EFI_SECURITY_VIOLATION.\r
- //\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-\r
- //\r
- // Find out Pkcs7 SignedData which follows the EFI_VARIABLE_AUTHENTICATION_2 descriptor.\r
- // AuthInfo.Hdr.dwLength is the length of the entire certificate, including the length of the header.\r
- //\r
- SigData = CertData->AuthInfo.CertData;\r
- SigDataSize = CertData->AuthInfo.Hdr.dwLength - (UINT32) (OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData));\r
-\r
- //\r
- // Find out the new data payload which follows Pkcs7 SignedData directly.\r
- //\r
- PayloadPtr = SigData + SigDataSize;\r
- PayloadSize = DataSize - OFFSET_OF_AUTHINFO2_CERT_DATA - (UINTN) SigDataSize;\r
-\r
- //\r
- // Construct a serialization buffer of the values of the VariableName, VendorGuid and Attributes\r
- // parameters of the SetVariable() call and the TimeStamp component of the\r
- // EFI_VARIABLE_AUTHENTICATION_2 descriptor followed by the variable's new value\r
- // i.e. (VariableName, VendorGuid, Attributes, TimeStamp, Data)\r
- //\r
- NewDataSize = PayloadSize + sizeof (EFI_TIME) + sizeof (UINT32) +\r
- sizeof (EFI_GUID) + StrSize (VariableName) - sizeof (CHAR16);\r
- //\r
- // Here is to reuse scratch data area(at the end of volatile variable store)\r
- // to reduce SMRAM consumption for SMM variable driver.\r
- // The scratch buffer is enough to hold the serialized data and safe to use,\r
- // because it will be used at here to do verification only first\r
- // and then used in UpdateVariable() for a time based auth variable set.\r
- //\r
- NewData = (UINT8 *) GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));\r
-\r
- Buffer = NewData;\r
- Length = StrLen (VariableName) * sizeof (CHAR16);\r
- CopyMem (Buffer, VariableName, Length);\r
- Buffer += Length;\r
-\r
- Length = sizeof (EFI_GUID);\r
- CopyMem (Buffer, VendorGuid, Length);\r
- Buffer += Length;\r
-\r
- Length = sizeof (UINT32);\r
- CopyMem (Buffer, &Attr, Length);\r
- Buffer += Length;\r
-\r
- Length = sizeof (EFI_TIME);\r
- CopyMem (Buffer, &CertData->TimeStamp, Length);\r
- Buffer += Length;\r
-\r
- CopyMem (Buffer, PayloadPtr, PayloadSize);\r
-\r
- if (AuthVarType == AuthVarTypePk) {\r
- //\r
- // Verify that the signature has been made with the current Platform Key (no chaining for PK).\r
- // First, get signer's certificates from SignedData.\r
- //\r
- VerifyStatus = Pkcs7GetSigners (\r
- SigData,\r
- SigDataSize,\r
- &SignerCerts,\r
- &CertStackSize,\r
- &RootCert,\r
- &RootCertSize\r
- );\r
- if (!VerifyStatus) {\r
- goto Exit;\r
- }\r
-\r
- //\r
- // Second, get the current platform key from variable. Check whether it's identical with signer's certificates\r
- // in SignedData. If not, return error immediately.\r
- //\r
- Status = FindVariable (\r
- EFI_PLATFORM_KEY_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &PkVariable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- VerifyStatus = FALSE;\r
- goto Exit;\r
- }\r
- CertList = (EFI_SIGNATURE_LIST *) GetVariableDataPtr (PkVariable.CurrPtr);\r
- Cert = (EFI_SIGNATURE_DATA *) ((UINT8 *) CertList + sizeof (EFI_SIGNATURE_LIST) + CertList->SignatureHeaderSize);\r
- if ((RootCertSize != (CertList->SignatureSize - (sizeof (EFI_SIGNATURE_DATA) - 1))) ||\r
- (CompareMem (Cert->SignatureData, RootCert, RootCertSize) != 0)) {\r
- VerifyStatus = FALSE;\r
- goto Exit;\r
- }\r
-\r
- //\r
- // Verify Pkcs7 SignedData via Pkcs7Verify library.\r
- //\r
- VerifyStatus = Pkcs7Verify (\r
- SigData,\r
- SigDataSize,\r
- RootCert,\r
- RootCertSize,\r
- NewData,\r
- NewDataSize\r
- );\r
-\r
- } else if (AuthVarType == AuthVarTypeKek) {\r
-\r
- //\r
- // Get KEK database from variable.\r
- //\r
- Status = FindVariable (\r
- EFI_KEY_EXCHANGE_KEY_NAME,\r
- &gEfiGlobalVariableGuid,\r
- &KekVariable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Ready to verify Pkcs7 SignedData. Go through KEK Signature Database to find out X.509 CertList.\r
- //\r
- KekDataSize = KekVariable.CurrPtr->DataSize;\r
- CertList = (EFI_SIGNATURE_LIST *) GetVariableDataPtr (KekVariable.CurrPtr);\r
- while ((KekDataSize > 0) && (KekDataSize >= CertList->SignatureListSize)) {\r
- if (CompareGuid (&CertList->SignatureType, &gEfiCertX509Guid)) {\r
- Cert = (EFI_SIGNATURE_DATA *) ((UINT8 *) CertList + sizeof (EFI_SIGNATURE_LIST) + CertList->SignatureHeaderSize);\r
- CertCount = (CertList->SignatureListSize - sizeof (EFI_SIGNATURE_LIST) - CertList->SignatureHeaderSize) / CertList->SignatureSize;\r
- for (Index = 0; Index < CertCount; Index++) {\r
- //\r
- // Iterate each Signature Data Node within this CertList for a verify\r
- //\r
- RootCert = Cert->SignatureData;\r
- RootCertSize = CertList->SignatureSize - (sizeof (EFI_SIGNATURE_DATA) - 1);\r
-\r
- //\r
- // Verify Pkcs7 SignedData via Pkcs7Verify library.\r
- //\r
- VerifyStatus = Pkcs7Verify (\r
- SigData,\r
- SigDataSize,\r
- RootCert,\r
- RootCertSize,\r
- NewData,\r
- NewDataSize\r
- );\r
- if (VerifyStatus) {\r
- goto Exit;\r
- }\r
- Cert = (EFI_SIGNATURE_DATA *) ((UINT8 *) Cert + CertList->SignatureSize);\r
- }\r
- }\r
- KekDataSize -= CertList->SignatureListSize;\r
- CertList = (EFI_SIGNATURE_LIST *) ((UINT8 *) CertList + CertList->SignatureListSize);\r
- }\r
- } else if (AuthVarType == AuthVarTypePriv) {\r
-\r
- //\r
- // Process common authenticated variable except PK/KEK/DB/DBX/DBT.\r
- // Get signer's certificates from SignedData.\r
- //\r
- VerifyStatus = Pkcs7GetSigners (\r
- SigData,\r
- SigDataSize,\r
- &SignerCerts,\r
- &CertStackSize,\r
- &RootCert,\r
- &RootCertSize\r
- );\r
- if (!VerifyStatus) {\r
- goto Exit;\r
- }\r
-\r
- //\r
- // Get previously stored signer's certificates from certdb for existing\r
- // variable. Check whether they are identical with signer's certificates\r
- // in SignedData. If not, return error immediately.\r
- //\r
- if ((Variable->CurrPtr != NULL)) {\r
- VerifyStatus = FALSE;\r
-\r
- Status = GetCertsFromDb (VariableName, VendorGuid, &CertsInCertDb, &CertsSizeinDb);\r
- if (EFI_ERROR (Status)) {\r
- goto Exit;\r
- }\r
-\r
- if ((CertStackSize != CertsSizeinDb) ||\r
- (CompareMem (SignerCerts, CertsInCertDb, CertsSizeinDb) != 0)) {\r
- goto Exit;\r
- }\r
- }\r
-\r
- VerifyStatus = Pkcs7Verify (\r
- SigData,\r
- SigDataSize,\r
- RootCert,\r
- RootCertSize,\r
- NewData,\r
- NewDataSize\r
- );\r
- if (!VerifyStatus) {\r
- goto Exit;\r
- }\r
-\r
- //\r
- // Delete signer's certificates when delete the common authenticated variable.\r
- //\r
- if ((PayloadSize == 0) && (Variable->CurrPtr != NULL) && ((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0)) {\r
- Status = DeleteCertsFromDb (VariableName, VendorGuid);\r
- if (EFI_ERROR (Status)) {\r
- VerifyStatus = FALSE;\r
- goto Exit;\r
- }\r
- } else if (Variable->CurrPtr == NULL && PayloadSize != 0) {\r
- //\r
- // Insert signer's certificates when adding a new common authenticated variable.\r
- //\r
- Status = InsertCertsToDb (VariableName, VendorGuid, SignerCerts, CertStackSize);\r
- if (EFI_ERROR (Status)) {\r
- VerifyStatus = FALSE;\r
- goto Exit;\r
- }\r
- }\r
- } else if (AuthVarType == AuthVarTypePayload) {\r
- CertList = (EFI_SIGNATURE_LIST *) PayloadPtr;\r
- Cert = (EFI_SIGNATURE_DATA *) ((UINT8 *) CertList + sizeof (EFI_SIGNATURE_LIST) + CertList->SignatureHeaderSize);\r
- RootCert = Cert->SignatureData;\r
- RootCertSize = CertList->SignatureSize - (sizeof (EFI_SIGNATURE_DATA) - 1);\r
-\r
- // Verify Pkcs7 SignedData via Pkcs7Verify library.\r
- //\r
- VerifyStatus = Pkcs7Verify (\r
- SigData,\r
- SigDataSize,\r
- RootCert,\r
- RootCertSize,\r
- NewData,\r
- NewDataSize\r
- );\r
- } else {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-\r
-Exit:\r
-\r
- if (AuthVarType == AuthVarTypePk || AuthVarType == AuthVarTypePriv) {\r
- Pkcs7FreeSigners (RootCert);\r
- Pkcs7FreeSigners (SignerCerts);\r
- }\r
-\r
- if (!VerifyStatus) {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
-\r
- Status = CheckSignatureListFormat(VariableName, VendorGuid, PayloadPtr, PayloadSize);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- if ((PayloadSize == 0) && (VarDel != NULL)) {\r
- *VarDel = TRUE;\r
- }\r
-\r
- //\r
- // Final step: Update/Append Variable if it pass Pkcs7Verify\r
- //\r
- return UpdateVariable (\r
- VariableName,\r
- VendorGuid,\r
- PayloadPtr,\r
- PayloadSize,\r
- Attributes,\r
- 0,\r
- 0,\r
- Variable,\r
- &CertData->TimeStamp\r
- );\r
-}\r
+++ /dev/null
-/** @file\r
- The internal header file includes the common header files, defines\r
- internal structure and functions used by AuthService module.\r
-\r
- Caution: This module requires additional review when modified.\r
- This driver will have external input - variable data. It may be input in SMM mode.\r
- This external input must be validated carefully to avoid security issue like\r
- buffer overflow, integer overflow.\r
- Variable attribute should also be checked to avoid authentication bypass.\r
- The whole SMM authentication variable design relies on the integrity of flash part and SMM.\r
- which is assumed to be protected by platform. All variable code and metadata in flash/SMM Memory\r
- may not be modified without authorization. If platform fails to protect these resources, \r
- the authentication service provided in this driver will be broken, and the behavior is undefined.\r
-\r
-Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#ifndef _AUTHSERVICE_H_\r
-#define _AUTHSERVICE_H_\r
-\r
-#define EFI_CERT_TYPE_RSA2048_SHA256_SIZE 256\r
-#define EFI_CERT_TYPE_RSA2048_SIZE 256\r
-\r
-///\r
-/// Size of AuthInfo prior to the data payload.\r
-///\r
-#define AUTHINFO_SIZE ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION, AuthInfo)) + \\r
- (OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)) + \\r
- sizeof (EFI_CERT_BLOCK_RSA_2048_SHA256))\r
-\r
-#define AUTHINFO2_SIZE(VarAuth2) ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) + \\r
- (UINTN) ((EFI_VARIABLE_AUTHENTICATION_2 *) (VarAuth2))->AuthInfo.Hdr.dwLength)\r
-\r
-#define OFFSET_OF_AUTHINFO2_CERT_DATA ((OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) + \\r
- (OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)))\r
-\r
-///\r
-/// "AuthVarKeyDatabase" variable for the Public Key store.\r
-///\r
-#define AUTHVAR_KEYDB_NAME L"AuthVarKeyDatabase"\r
-\r
-///\r
-/// "certdb" variable stores the signer's certificates for non PK/KEK/DB/DBX\r
-/// variables with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r
-/// \r
-///\r
-#define EFI_CERT_DB_NAME L"certdb"\r
-\r
-///\r
-/// Struct to record signature requirement defined by UEFI spec.\r
-/// For SigHeaderSize and SigDataSize, ((UINT32) ~0) means NO exact length requirement for this field.\r
-///\r
-typedef struct {\r
- EFI_GUID SigType;\r
- // Expected SignatureHeader size in Bytes.\r
- UINT32 SigHeaderSize;\r
- // Expected SignatureData size in Bytes.\r
- UINT32 SigDataSize;\r
-} EFI_SIGNATURE_ITEM;\r
-\r
-typedef enum {\r
- AuthVarTypePk,\r
- AuthVarTypeKek,\r
- AuthVarTypePriv,\r
- AuthVarTypePayload\r
-} AUTHVAR_TYPE;\r
-\r
-#pragma pack(1)\r
-typedef struct {\r
- EFI_GUID VendorGuid;\r
- UINT32 CertNodeSize;\r
- UINT32 NameSize;\r
- UINT32 CertDataSize;\r
- /// CHAR16 VariableName[NameSize];\r
- /// UINT8 CertData[CertDataSize];\r
-} AUTH_CERT_DB_DATA;\r
-#pragma pack()\r
-\r
-/**\r
- Process variable with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS/EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
-\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter\r
- @return EFI_WRITE_PROTECTED Variable is write-protected and needs authentication with\r
- EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r
- @return EFI_SECURITY_VIOLATION The variable is with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\r
- set, but the AuthInfo does NOT pass the validation\r
- check carried out by the firmware.\r
- @return EFI_SUCCESS Variable is not write-protected, or passed validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-ProcessVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes\r
- );\r
-\r
-/**\r
- Update platform mode.\r
-\r
- @param[in] Mode SETUP_MODE or USER_MODE.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Update platform mode successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-UpdatePlatformMode (\r
- IN UINT32 Mode\r
- );\r
-\r
-/**\r
- Initializes for authenticated varibale service.\r
-\r
- @param[in] MaxAuthVariableSize Reflect the overhead associated with the saving\r
- of a single EFI authenticated variable with the exception\r
- of the overhead associated with the length\r
- of the string name of the EFI variable.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resources.\r
-\r
-**/\r
-EFI_STATUS\r
-AutenticatedVariableServiceInitialize (\r
- IN UINTN MaxAuthVariableSize\r
- );\r
-\r
-/**\r
- Initializes for cryptlib service before use, include register algrithm and allocate scratch.\r
-\r
-**/\r
-VOID\r
-CryptLibraryInitialize (\r
- VOID\r
- );\r
-\r
-/**\r
- Check input data form to make sure it is a valid EFI_SIGNATURE_LIST for PK/KEK variable.\r
-\r
- @param[in] VariableName Name of Variable to be check.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Point to the variable data to be checked.\r
- @param[in] DataSize Size of Data.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid signature list format.\r
- @return EFI_SUCCESS Passed signature list format check successfully.\r
- \r
-**/\r
-EFI_STATUS\r
-CheckSignatureListFormat(\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize\r
- );\r
-\r
-/**\r
- Process variable with platform key for verification.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
- @param[in] IsPk Indicate whether it is to process pk.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter\r
- @return EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
- check carried out by the firmware.\r
- @return EFI_SUCCESS Variable passed validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-ProcessVarWithPk (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes OPTIONAL,\r
- IN BOOLEAN IsPk\r
- );\r
-\r
-/**\r
- Process variable with key exchange key for verification.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information that is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
- check carried out by the firmware.\r
- @return EFI_SUCCESS Variable passed validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-ProcessVarWithKek (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes OPTIONAL\r
- );\r
-\r
-/**\r
- Merge two buffers which formatted as EFI_SIGNATURE_LIST. Only the new EFI_SIGNATURE_DATA\r
- will be appended to the original EFI_SIGNATURE_LIST, duplicate EFI_SIGNATURE_DATA\r
- will be ignored.\r
-\r
- @param[in, out] Data Pointer to original EFI_SIGNATURE_LIST.\r
- @param[in] DataSize Size of Data buffer.\r
- @param[in] FreeBufSize Size of free data buffer \r
- @param[in] NewData Pointer to new EFI_SIGNATURE_LIST to be appended.\r
- @param[in] NewDataSize Size of NewData buffer.\r
- @param[out] MergedBufSize Size of the merged buffer\r
-\r
- @return EFI_BUFFER_TOO_SMALL if input Data buffer overflowed\r
-\r
-**/\r
-EFI_STATUS\r
-AppendSignatureList (\r
- IN OUT VOID *Data,\r
- IN UINTN DataSize,\r
- IN UINTN FreeBufSize,\r
- IN VOID *NewData,\r
- IN UINTN NewDataSize,\r
- OUT UINTN *MergedBufSize\r
- );\r
-\r
-/**\r
- Compare two EFI_TIME data.\r
-\r
-\r
- @param FirstTime A pointer to the first EFI_TIME data.\r
- @param SecondTime A pointer to the second EFI_TIME data.\r
-\r
- @retval TRUE The FirstTime is not later than the SecondTime.\r
- @retval FALSE The FirstTime is later than the SecondTime.\r
-\r
-**/\r
-BOOLEAN\r
-CompareTimeStamp (\r
- IN EFI_TIME *FirstTime,\r
- IN EFI_TIME *SecondTime\r
- );\r
-\r
-/**\r
- Delete matching signer's certificates when deleting common authenticated\r
- variable by corresponding VariableName and VendorGuid from "certdb".\r
-\r
- @param[in] VariableName Name of authenticated Variable.\r
- @param[in] VendorGuid Vendor GUID of authenticated Variable.\r
-\r
- @retval EFI_INVALID_PARAMETER Any input parameter is invalid.\r
- @retval EFI_NOT_FOUND Fail to find "certdb" or matching certs.\r
- @retval EFI_OUT_OF_RESOURCES The operation is failed due to lack of resources.\r
- @retval EFI_SUCCESS The operation is completed successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-DeleteCertsFromDb (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- );\r
-\r
-/**\r
- Process variable with EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Data Data pointer.\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Variable The variable information which is used to keep track of variable usage.\r
- @param[in] Attributes Attribute value of the variable.\r
- @param[in] AuthVarType Verify against PK or KEK database or private database.\r
- @param[out] VarDel Delete the variable or not.\r
-\r
- @retval EFI_INVALID_PARAMETER Invalid parameter.\r
- @retval EFI_SECURITY_VIOLATION The variable does NOT pass the validation\r
- check carried out by the firmware.\r
- @retval EFI_OUT_OF_RESOURCES Failed to process variable due to lack\r
- of resources.\r
- @retval EFI_SUCCESS Variable pass validation successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-VerifyTimeBasedPayload (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN VARIABLE_POINTER_TRACK *Variable,\r
- IN UINT32 Attributes,\r
- IN AUTHVAR_TYPE AuthVarType,\r
- OUT BOOLEAN *VarDel\r
- );\r
-\r
-extern UINT8 *mPubKeyStore;\r
-extern UINT8 *mCertDbStore;\r
-extern UINT32 mPubKeyNumber;\r
-extern VOID *mHashCtx;\r
-\r
-#endif\r
+++ /dev/null
-/** @file\r
- Measure TrEE required variable.\r
-\r
-Copyright (c) 2013 - 2014, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include <PiDxe.h>\r
-#include <Guid/ImageAuthentication.h>\r
-#include <IndustryStandard/UefiTcgPlatform.h>\r
-#include <Protocol/TrEEProtocol.h>\r
-\r
-#include <Library/UefiBootServicesTableLib.h>\r
-#include <Library/UefiRuntimeServicesTableLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/BaseMemoryLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/BaseLib.h>\r
-#include <Library/TpmMeasurementLib.h>\r
-\r
-typedef struct {\r
- CHAR16 *VariableName;\r
- EFI_GUID *VendorGuid;\r
-} VARIABLE_TYPE;\r
-\r
-VARIABLE_TYPE mVariableType[] = {\r
- {EFI_SECURE_BOOT_MODE_NAME, &gEfiGlobalVariableGuid},\r
- {EFI_PLATFORM_KEY_NAME, &gEfiGlobalVariableGuid},\r
- {EFI_KEY_EXCHANGE_KEY_NAME, &gEfiGlobalVariableGuid},\r
- {EFI_IMAGE_SECURITY_DATABASE, &gEfiImageSecurityDatabaseGuid},\r
- {EFI_IMAGE_SECURITY_DATABASE1, &gEfiImageSecurityDatabaseGuid},\r
-};\r
-\r
-/**\r
- This function will return if this variable is SecureBootPolicy Variable.\r
-\r
- @param[in] VariableName A Null-terminated string that is the name of the vendor's variable.\r
- @param[in] VendorGuid A unique identifier for the vendor.\r
-\r
- @retval TRUE This is SecureBootPolicy Variable\r
- @retval FALSE This is not SecureBootPolicy Variable\r
-**/\r
-BOOLEAN\r
-IsSecureBootPolicyVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- UINTN Index;\r
-\r
- for (Index = 0; Index < sizeof(mVariableType)/sizeof(mVariableType[0]); Index++) {\r
- if ((StrCmp (VariableName, mVariableType[Index].VariableName) == 0) && \r
- (CompareGuid (VendorGuid, mVariableType[Index].VendorGuid))) {\r
- return TRUE;\r
- }\r
- }\r
- return FALSE;\r
-}\r
-\r
-/**\r
- Measure and log an EFI variable, and extend the measurement result into a specific PCR.\r
-\r
- @param[in] VarName A Null-terminated string that is the name of the vendor's variable.\r
- @param[in] VendorGuid A unique identifier for the vendor.\r
- @param[in] VarData The content of the variable data. \r
- @param[in] VarSize The size of the variable data. \r
- \r
- @retval EFI_SUCCESS Operation completed successfully.\r
- @retval EFI_OUT_OF_RESOURCES Out of memory.\r
- @retval EFI_DEVICE_ERROR The operation was unsuccessful.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-MeasureVariable (\r
- IN CHAR16 *VarName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *VarData,\r
- IN UINTN VarSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN VarNameLength;\r
- EFI_VARIABLE_DATA_TREE *VarLog;\r
- UINT32 VarLogSize;\r
-\r
- ASSERT ((VarSize == 0 && VarData == NULL) || (VarSize != 0 && VarData != NULL));\r
-\r
- VarNameLength = StrLen (VarName);\r
- VarLogSize = (UINT32)(sizeof (*VarLog) + VarNameLength * sizeof (*VarName) + VarSize\r
- - sizeof (VarLog->UnicodeName) - sizeof (VarLog->VariableData));\r
-\r
- VarLog = (EFI_VARIABLE_DATA_TREE *) AllocateZeroPool (VarLogSize);\r
- if (VarLog == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- CopyMem (&VarLog->VariableName, VendorGuid, sizeof(VarLog->VariableName));\r
- VarLog->UnicodeNameLength = VarNameLength;\r
- VarLog->VariableDataLength = VarSize;\r
- CopyMem (\r
- VarLog->UnicodeName,\r
- VarName,\r
- VarNameLength * sizeof (*VarName)\r
- );\r
- if (VarSize != 0) {\r
- CopyMem (\r
- (CHAR16 *)VarLog->UnicodeName + VarNameLength,\r
- VarData,\r
- VarSize\r
- );\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "AuthVariableDxe: MeasureVariable (Pcr - %x, EventType - %x, ", (UINTN)7, (UINTN)EV_EFI_VARIABLE_AUTHORITY));\r
- DEBUG ((EFI_D_INFO, "VariableName - %s, VendorGuid - %g)\n", VarName, VendorGuid));\r
-\r
- Status = TpmMeasureAndLogData (\r
- 7,\r
- EV_EFI_VARIABLE_DRIVER_CONFIG,\r
- VarLog,\r
- VarLogSize,\r
- VarLog,\r
- VarLogSize\r
- );\r
- FreePool (VarLog);\r
- return Status;\r
-}\r
-\r
-/**\r
- Returns the status whether get the variable success. The function retrieves \r
- variable through the UEFI Runtime Service GetVariable(). The \r
- returned buffer is allocated using AllocatePool(). The caller is responsible\r
- for freeing this buffer with FreePool().\r
-\r
- This API is only invoked in boot time. It may NOT be invoked at runtime.\r
-\r
- @param[in] Name The pointer to a Null-terminated Unicode string.\r
- @param[in] Guid The pointer to an EFI_GUID structure\r
- @param[out] Value The buffer point saved the variable info.\r
- @param[out] Size The buffer size of the variable.\r
-\r
- @return EFI_OUT_OF_RESOURCES Allocate buffer failed.\r
- @return EFI_SUCCESS Find the specified variable.\r
- @return Others Errors Return errors from call to gRT->GetVariable.\r
-\r
-**/\r
-EFI_STATUS\r
-InternalGetVariable (\r
- IN CONST CHAR16 *Name,\r
- IN CONST EFI_GUID *Guid,\r
- OUT VOID **Value,\r
- OUT UINTN *Size\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN BufferSize;\r
-\r
- //\r
- // Try to get the variable size.\r
- //\r
- BufferSize = 0;\r
- *Value = NULL;\r
- if (Size != NULL) {\r
- *Size = 0;\r
- }\r
- \r
- Status = gRT->GetVariable ((CHAR16 *) Name, (EFI_GUID *) Guid, NULL, &BufferSize, *Value);\r
- if (Status != EFI_BUFFER_TOO_SMALL) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Allocate buffer to get the variable.\r
- //\r
- *Value = AllocatePool (BufferSize);\r
- ASSERT (*Value != NULL);\r
- if (*Value == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- //\r
- // Get the variable data.\r
- //\r
- Status = gRT->GetVariable ((CHAR16 *) Name, (EFI_GUID *) Guid, NULL, &BufferSize, *Value);\r
- if (EFI_ERROR (Status)) {\r
- FreePool(*Value);\r
- *Value = NULL;\r
- }\r
-\r
- if (Size != NULL) {\r
- *Size = BufferSize;\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- SecureBoot Hook for SetVariable.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SecureBootHook (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN VariableDataSize;\r
- VOID *VariableData;\r
-\r
- if (!IsSecureBootPolicyVariable (VariableName, VendorGuid)) {\r
- return ;\r
- }\r
-\r
- //\r
- // We should NOT use Data and DataSize here,because it may include signature,\r
- // or is just partial with append attributes, or is deleted.\r
- // We should GetVariable again, to get full variable content.\r
- //\r
- Status = InternalGetVariable (\r
- VariableName,\r
- VendorGuid,\r
- &VariableData,\r
- &VariableDataSize\r
- );\r
- if (EFI_ERROR (Status)) {\r
- VariableData = NULL;\r
- VariableDataSize = 0;\r
- }\r
-\r
- Status = MeasureVariable (\r
- VariableName,\r
- VendorGuid,\r
- VariableData,\r
- VariableDataSize\r
- );\r
- DEBUG ((EFI_D_INFO, "MeasureBootPolicyVariable - %r\n", Status));\r
-\r
- if (VariableData != NULL) {\r
- FreePool (VariableData);\r
- }\r
-\r
- return ;\r
-}\r
+++ /dev/null
-/** @file\r
- Handles non-volatile variable store garbage collection, using FTW\r
- (Fault Tolerant Write) protocol.\r
-\r
-Copyright (c) 2009 - 2014, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "Variable.h"\r
-\r
-/**\r
- Gets LBA of block and offset by given address.\r
-\r
- This function gets the Logical Block Address (LBA) of a firmware\r
- volume block containing the given address, and the offset of the\r
- address on the block.\r
-\r
- @param Address Address which should be contained\r
- by returned FVB handle.\r
- @param Lba Pointer to LBA for output.\r
- @param Offset Pointer to offset for output.\r
-\r
- @retval EFI_SUCCESS LBA and offset successfully returned.\r
- @retval EFI_NOT_FOUND Fail to find FVB handle by address.\r
- @retval EFI_ABORTED Fail to find valid LBA and offset.\r
-\r
-**/\r
-EFI_STATUS\r
-GetLbaAndOffsetByAddress (\r
- IN EFI_PHYSICAL_ADDRESS Address,\r
- OUT EFI_LBA *Lba,\r
- OUT UINTN *Offset\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
- EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
- EFI_FV_BLOCK_MAP_ENTRY *FvbMapEntry;\r
- UINT32 LbaIndex;\r
-\r
- *Lba = (EFI_LBA) (-1);\r
- *Offset = 0;\r
- Fvb = NULL;\r
-\r
- //\r
- // Get the proper FVB protocol.\r
- //\r
- Status = GetFvbInfoByAddress (Address, NULL, &Fvb);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- //\r
- // Get the Base Address of FV.\r
- //\r
- Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r
-\r
- //\r
- // Get the (LBA, Offset) of Address.\r
- //\r
- if ((FwVolHeader->FvLength) > (FwVolHeader->HeaderLength)) {\r
- //\r
- // BUGBUG: Assume one FV has one type of BlockLength.\r
- //\r
- FvbMapEntry = &FwVolHeader->BlockMap[0];\r
- for (LbaIndex = 1; LbaIndex <= FvbMapEntry->NumBlocks; LbaIndex += 1) {\r
- if (Address < (FvbBaseAddress + FvbMapEntry->Length * LbaIndex)) {\r
- //\r
- // Found the (Lba, Offset).\r
- //\r
- *Lba = LbaIndex - 1;\r
- *Offset = (UINTN) (Address - (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)));\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
-\r
- return EFI_ABORTED;\r
-}\r
-\r
-/**\r
- Writes a buffer to variable storage space, in the working block.\r
-\r
- This function writes a buffer to variable storage space into a firmware\r
- volume block device. The destination is specified by parameter\r
- VariableBase. Fault Tolerant Write protocol is used for writing.\r
-\r
- @param VariableBase Base address of variable to write\r
- @param VariableBuffer Point to the variable data buffer.\r
-\r
- @retval EFI_SUCCESS The function completed successfully.\r
- @retval EFI_NOT_FOUND Fail to locate Fault Tolerant Write protocol.\r
- @retval EFI_ABORTED The function could not complete successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-FtwVariableSpace (\r
- IN EFI_PHYSICAL_ADDRESS VariableBase,\r
- IN VARIABLE_STORE_HEADER *VariableBuffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_HANDLE FvbHandle;\r
- EFI_LBA VarLba;\r
- UINTN VarOffset;\r
- UINTN FtwBufferSize;\r
- EFI_FAULT_TOLERANT_WRITE_PROTOCOL *FtwProtocol;\r
-\r
- //\r
- // Locate fault tolerant write protocol.\r
- //\r
- Status = GetFtwProtocol((VOID **) &FtwProtocol);\r
- if (EFI_ERROR (Status)) {\r
- return EFI_NOT_FOUND;\r
- }\r
- //\r
- // Locate Fvb handle by address.\r
- //\r
- Status = GetFvbInfoByAddress (VariableBase, &FvbHandle, NULL);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- //\r
- // Get LBA and Offset by address.\r
- //\r
- Status = GetLbaAndOffsetByAddress (VariableBase, &VarLba, &VarOffset);\r
- if (EFI_ERROR (Status)) {\r
- return EFI_ABORTED;\r
- }\r
-\r
- FtwBufferSize = ((VARIABLE_STORE_HEADER *) ((UINTN) VariableBase))->Size;\r
- ASSERT (FtwBufferSize == VariableBuffer->Size);\r
-\r
- //\r
- // FTW write record.\r
- //\r
- Status = FtwProtocol->Write (\r
- FtwProtocol,\r
- VarLba, // LBA\r
- VarOffset, // Offset\r
- FtwBufferSize, // NumBytes\r
- NULL, // PrivateData NULL\r
- FvbHandle, // Fvb Handle\r
- (VOID *) VariableBuffer // write buffer\r
- );\r
-\r
- return Status;\r
-}\r
+++ /dev/null
-/** @file\r
- Implementation functions and structures for var check protocol.\r
-\r
-Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "Variable.h"\r
-#include "AuthService.h"\r
-#include <Library/DevicePathLib.h>\r
-\r
-extern LIST_ENTRY mLockedVariableList;\r
-extern BOOLEAN mEndOfDxe;\r
-extern BOOLEAN mEnableLocking;\r
-\r
-#define VAR_CHECK_HANDLER_TABLE_SIZE 0x8\r
-\r
-UINT32 mNumberOfHandler = 0;\r
-UINT32 mMaxNumberOfHandler = 0;\r
-VAR_CHECK_SET_VARIABLE_CHECK_HANDLER *mHandlerTable = NULL;\r
-\r
-typedef struct {\r
- LIST_ENTRY Link;\r
- EFI_GUID Guid;\r
- VAR_CHECK_VARIABLE_PROPERTY VariableProperty;\r
- //CHAR16 *Name;\r
-} VAR_CHECK_VARIABLE_ENTRY;\r
-\r
-LIST_ENTRY mVarCheckVariableList = INITIALIZE_LIST_HEAD_VARIABLE (mVarCheckVariableList);\r
-\r
-typedef\r
-EFI_STATUS\r
-(EFIAPI *INTERNAL_VAR_CHECK_FUNCTION) (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *Propery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- );\r
-\r
-typedef struct {\r
- CHAR16 *Name;\r
- VAR_CHECK_VARIABLE_PROPERTY VariableProperty;\r
- INTERNAL_VAR_CHECK_FUNCTION CheckFunction;\r
-} UEFI_DEFINED_VARIABLE_ENTRY;\r
-\r
-/**\r
- Internal check for load option.\r
-\r
- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The data buffer is not a valid load option.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckLoadOption (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- UINT16 FilePathListLength;\r
- CHAR16 *Description;\r
- EFI_DEVICE_PATH_PROTOCOL *FilePathList;\r
-\r
- FilePathListLength = *((UINT16 *) ((UINTN) Data + sizeof (UINT32)));\r
-\r
- //\r
- // Check Description\r
- //\r
- Description = (CHAR16 *) ((UINTN) Data + sizeof (UINT32) + sizeof (UINT16));\r
- while (Description < (CHAR16 *) ((UINTN) Data + DataSize)) {\r
- if (*Description == L'\0') {\r
- break;\r
- }\r
- Description++;\r
- }\r
- if ((UINTN) Description >= ((UINTN) Data + DataSize)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- Description++;\r
-\r
- //\r
- // Check FilePathList\r
- //\r
- FilePathList = (EFI_DEVICE_PATH_PROTOCOL *) Description;\r
- if ((UINTN) FilePathList > (MAX_ADDRESS - FilePathListLength)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (((UINTN) FilePathList + FilePathListLength) > ((UINTN) Data + DataSize)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (FilePathListLength < sizeof (EFI_DEVICE_PATH_PROTOCOL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (!IsDevicePathValid (FilePathList, FilePathListLength)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Internal check for key option.\r
-\r
- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The data buffer is not a valid key option.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckKeyOption (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- if (((DataSize - sizeof (EFI_KEY_OPTION)) % sizeof (EFI_INPUT_KEY)) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Internal check for device path.\r
-\r
- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The data buffer is not a valid device path.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckDevicePath (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- if (!IsDevicePathValid ((EFI_DEVICE_PATH_PROTOCOL *) Data, DataSize)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Internal check for ASCII string.\r
-\r
- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The data buffer is not a Null-terminated ASCII string.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckAsciiString (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- CHAR8 *String;\r
- UINTN Index;\r
-\r
- String = (CHAR8 *) Data;\r
- if (String[DataSize - 1] == '\0') {\r
- return EFI_SUCCESS;\r
- } else {\r
- for (Index = 1; Index < DataSize && (String[DataSize - 1 - Index] != '\0'); Index++);\r
- if (Index == DataSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Internal check for size array.\r
-\r
- @param[in] VariablePropery Pointer to variable property.\r
- @param[in] DataSize Data size.\r
- @param[in] Data Pointer to data buffer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER The DataSize is not size array.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckSizeArray (\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariablePropery,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- if ((DataSize % VariablePropery->MinSize) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-//\r
-// To prevent name collisions with possible future globally defined variables,\r
-// other internal firmware data variables that are not defined here must be\r
-// saved with a unique VendorGuid other than EFI_GLOBAL_VARIABLE or\r
-// any other GUID defined by the UEFI Specification. Implementations must\r
-// only permit the creation of variables with a UEFI Specification-defined\r
-// VendorGuid when these variables are documented in the UEFI Specification.\r
-//\r
-UEFI_DEFINED_VARIABLE_ENTRY mGlobalVariableList[] = {\r
- {\r
- EFI_LANG_CODES_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_LANG_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_TIME_OUT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_PLATFORM_LANG_CODES_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_PLATFORM_LANG_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- InternalVarCheckAsciiString\r
- },\r
- {\r
- EFI_CON_IN_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_CON_OUT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_ERR_OUT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_CON_IN_DEV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_CON_OUT_DEV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_ERR_OUT_DEV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_DEVICE_PATH_PROTOCOL),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckDevicePath\r
- },\r
- {\r
- EFI_BOOT_ORDER_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_BOOT_NEXT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_BOOT_CURRENT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_BOOT_OPTION_SUPPORT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT32),\r
- sizeof (UINT32)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DRIVER_ORDER_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_SYS_PREP_ORDER_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_HW_ERR_REC_SUPPORT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT16),\r
- sizeof (UINT16)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_SETUP_MODE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_KEY_EXCHANGE_KEY_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_PLATFORM_KEY_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_SIGNATURE_SUPPORT_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (EFI_GUID),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckSizeArray\r
- },\r
- {\r
- EFI_SECURE_BOOT_MODE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_KEK_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_PK_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DB_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DBX_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_DBT_DEFAULT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_OS_INDICATIONS_SUPPORT_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT64),\r
- sizeof (UINT64)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_OS_INDICATIONS_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT64),\r
- sizeof (UINT64)\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_VENDOR_KEYS_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_BS_RT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- },\r
- NULL\r
- },\r
-};\r
-UEFI_DEFINED_VARIABLE_ENTRY mGlobalVariableList2[] = {\r
- {\r
- L"Boot####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT32) + sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckLoadOption\r
- },\r
- {\r
- L"Driver####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT32) + sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckLoadOption\r
- },\r
- {\r
- L"SysPrep####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (UINT32) + sizeof (UINT16),\r
- MAX_UINTN\r
- },\r
- InternalVarCheckLoadOption\r
- },\r
- {\r
- L"Key####",\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (EFI_KEY_OPTION),\r
- sizeof (EFI_KEY_OPTION) + 3 * sizeof (EFI_INPUT_KEY)\r
- },\r
- InternalVarCheckKeyOption\r
- },\r
-};\r
-\r
-//\r
-// EFI_IMAGE_SECURITY_DATABASE_GUID\r
-//\r
-UEFI_DEFINED_VARIABLE_ENTRY mImageSecurityVariableList[] = {\r
- {\r
- EFI_IMAGE_SECURITY_DATABASE,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_IMAGE_SECURITY_DATABASE1,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
- {\r
- EFI_IMAGE_SECURITY_DATABASE2,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- 1,\r
- MAX_UINTN\r
- },\r
- NULL\r
- },\r
-};\r
-\r
-typedef struct {\r
- EFI_GUID *Guid;\r
- CHAR16 *Name;\r
- VAR_CHECK_VARIABLE_PROPERTY VariableProperty;\r
- INTERNAL_VAR_CHECK_FUNCTION CheckFunction;\r
-} VARIABLE_DRIVER_VARIABLE_ENTRY;\r
-\r
-VARIABLE_DRIVER_VARIABLE_ENTRY mVariableDriverVariableList[] = {\r
- {\r
- &gEfiSecureBootEnableDisableGuid,\r
- EFI_SECURE_BOOT_ENABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- }\r
- },\r
- {\r
- &gEfiCustomModeEnableGuid,\r
- EFI_CUSTOM_MODE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- 0,\r
- VARIABLE_ATTRIBUTE_NV_BS,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- }\r
- },\r
- {\r
- &gEfiVendorKeysNvGuid,\r
- EFI_VENDOR_KEYS_NV_VARIABLE_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- sizeof (UINT8),\r
- sizeof (UINT8)\r
- }\r
- },\r
- {\r
- &gEfiAuthenticatedVariableGuid,\r
- AUTHVAR_KEYDB_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AW,\r
- sizeof (UINT8),\r
- MAX_UINTN\r
- }\r
- },\r
- {\r
- &gEfiCertDbGuid,\r
- EFI_CERT_DB_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r
- sizeof (UINT32),\r
- MAX_UINTN\r
- }\r
- },\r
- {\r
- &gEdkiiVarErrorFlagGuid,\r
- VAR_ERROR_FLAG_NAME,\r
- {\r
- VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r
- VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- sizeof (VAR_ERROR_FLAG),\r
- sizeof (VAR_ERROR_FLAG)\r
- }\r
- },\r
-};\r
-\r
-/**\r
- Get UEFI defined global variable or image security database variable property.\r
- The code will check if variable guid is global variable or image security database guid first.\r
- If yes, further check if variable name is in mGlobalVariableList, mGlobalVariableList2 or mImageSecurityVariableList.\r
-\r
- @param[in] VariableName Pointer to variable name.\r
- @param[in] VendorGuid Variable Vendor Guid.\r
- @param[in] WildcardMatch Try wildcard match or not.\r
- @param[out] VariableProperty Pointer to variable property.\r
- @param[out] VarCheckFunction Pointer to check function.\r
-\r
- @retval EFI_SUCCESS Variable is not global variable or image security database variable.\r
- @retval EFI_INVALID_PARAMETER Variable is global variable or image security database variable, but variable name is not in the lists.\r
-\r
-**/\r
-EFI_STATUS\r
-GetUefiDefinedVariableProperty (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN BOOLEAN WildcardMatch,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY **VariableProperty,\r
- OUT INTERNAL_VAR_CHECK_FUNCTION *VarCheckFunction OPTIONAL\r
- )\r
-{\r
- UINTN Index;\r
- UINTN NameLength;\r
-\r
- if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid)) {\r
- //\r
- // Try list 1, exactly match.\r
- //\r
- for (Index = 0; Index < sizeof (mGlobalVariableList)/sizeof (mGlobalVariableList[0]); Index++) {\r
- if (StrCmp (mGlobalVariableList[Index].Name, VariableName) == 0) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mGlobalVariableList[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mGlobalVariableList[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- //\r
- // Try list 2.\r
- //\r
- NameLength = StrLen (VariableName) - 4;\r
- for (Index = 0; Index < sizeof (mGlobalVariableList2)/sizeof (mGlobalVariableList2[0]); Index++) {\r
- if (WildcardMatch) {\r
- if ((StrLen (VariableName) == StrLen (mGlobalVariableList2[Index].Name)) &&\r
- (StrnCmp (mGlobalVariableList2[Index].Name, VariableName, NameLength) == 0) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength]) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength + 1]) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength + 2]) &&\r
- IsHexaDecimalDigitCharacter (VariableName[NameLength + 3])) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mGlobalVariableList2[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mGlobalVariableList2[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- if (StrCmp (mGlobalVariableList2[Index].Name, VariableName) == 0) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mGlobalVariableList2[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mGlobalVariableList2[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- //\r
- // The variable name is not in the lists.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid)){\r
- for (Index = 0; Index < sizeof (mImageSecurityVariableList)/sizeof (mImageSecurityVariableList[0]); Index++) {\r
- if (StrCmp (mImageSecurityVariableList[Index].Name, VariableName) == 0) {\r
- if (VarCheckFunction != NULL) {\r
- *VarCheckFunction = mImageSecurityVariableList[Index].CheckFunction;\r
- }\r
- *VariableProperty = &mImageSecurityVariableList[Index].VariableProperty;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
-\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // It is not global variable or image security database variable.\r
- //\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Get variable property for variables managed by Varaible driver.\r
-\r
- @param[in] VariableName Pointer to variable name.\r
- @param[in] VendorGuid Variable Vendor Guid.\r
-\r
- @return Pointer to variable property.\r
-\r
-**/\r
-VAR_CHECK_VARIABLE_PROPERTY *\r
-GetVariableDriverVariableProperty (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- UINTN Index;\r
-\r
- for (Index = 0; Index < sizeof (mVariableDriverVariableList)/sizeof (mVariableDriverVariableList[0]); Index++) {\r
- if ((CompareGuid (mVariableDriverVariableList[Index].Guid, VendorGuid)) && (StrCmp (mVariableDriverVariableList[Index].Name, VariableName) == 0)) {\r
- return &mVariableDriverVariableList[Index].VariableProperty;\r
- }\r
- }\r
-\r
- return NULL;\r
-}\r
-\r
-/**\r
- Internal SetVariable check.\r
-\r
- @param[in] VariableName Name of Variable to set.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Attributes Attribute value of the variable.\r
- @param[in] DataSize Size of Data to set.\r
- @param[in] Data Data pointer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits, name, and GUID was supplied,\r
- or the DataSize exceeds the minimum or maximum allowed,\r
- or the Data value is not following UEFI spec for UEFI defined variables.\r
- @retval EFI_WRITE_PROTECTED The variable in question is read-only.\r
- @retval Others The return status from check handler.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckSetVariableCheck (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN Index;\r
- LIST_ENTRY *Link;\r
- VAR_CHECK_VARIABLE_ENTRY *Entry;\r
- CHAR16 *Name;\r
- VAR_CHECK_VARIABLE_PROPERTY *Property;\r
- INTERNAL_VAR_CHECK_FUNCTION VarCheckFunction;\r
-\r
- if (!mEndOfDxe) {\r
- //\r
- // Only do check after End Of Dxe.\r
- //\r
- return EFI_SUCCESS;\r
- }\r
-\r
- Property = NULL;\r
- VarCheckFunction = NULL;\r
-\r
- for ( Link = GetFirstNode (&mVarCheckVariableList)\r
- ; !IsNull (&mVarCheckVariableList, Link)\r
- ; Link = GetNextNode (&mVarCheckVariableList, Link)\r
- ) {\r
- Entry = BASE_CR (Link, VAR_CHECK_VARIABLE_ENTRY, Link);\r
- Name = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r
- if (CompareGuid (&Entry->Guid, VendorGuid) && (StrCmp (Name, VariableName) == 0)) {\r
- Property = &Entry->VariableProperty;\r
- break;\r
- }\r
- }\r
- if (Property == NULL) {\r
- Property = GetVariableDriverVariableProperty (VariableName, VendorGuid);\r
- }\r
- if (Property == NULL) {\r
- Status = GetUefiDefinedVariableProperty (VariableName, VendorGuid, TRUE, &Property, &VarCheckFunction);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_INFO, "[Variable]: Var Check UEFI defined variable fail %r - %g:%s\n", Status, VendorGuid, VariableName));\r
- return Status;\r
- }\r
- }\r
- if (Property != NULL) {\r
- if (mEnableLocking && ((Property->Property & VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY) != 0)) {\r
- DEBUG ((EFI_D_INFO, "[Variable]: Var Check ReadOnly variable fail %r - %g:%s\n", EFI_WRITE_PROTECTED, VendorGuid, VariableName));\r
- return EFI_WRITE_PROTECTED;\r
- }\r
- if (!((((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) && (DataSize == 0)) || (Attributes == 0))) {\r
- //\r
- // Not to delete variable.\r
- //\r
- if ((Attributes & (~EFI_VARIABLE_APPEND_WRITE)) != Property->Attributes) {\r
- DEBUG ((EFI_D_INFO, "[Variable]: Var Check Attributes(0x%08x to 0x%08x) fail %r - %g:%s\n", Property->Attributes, Attributes, EFI_INVALID_PARAMETER, VendorGuid, VariableName));\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (DataSize != 0) {\r
- if ((DataSize < Property->MinSize) || (DataSize > Property->MaxSize)) {\r
- DEBUG ((EFI_D_INFO, "[Variable]: Var Check DataSize fail(0x%x not in 0x%x - 0x%x) %r - %g:%s\n", DataSize, Property->MinSize, Property->MaxSize, EFI_INVALID_PARAMETER, VendorGuid, VariableName));\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (VarCheckFunction != NULL) {\r
- Status = VarCheckFunction (\r
- Property,\r
- DataSize,\r
- Data\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_INFO, "[Variable]: Internal Var Check function fail %r - %g:%s\n", Status, VendorGuid, VariableName));\r
- return Status;\r
- }\r
- }\r
- }\r
- }\r
- }\r
-\r
- for (Index = 0; Index < mNumberOfHandler; Index ++) {\r
- Status = mHandlerTable[Index] (\r
- VariableName,\r
- VendorGuid,\r
- Attributes,\r
- DataSize,\r
- Data\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((EFI_D_INFO, "[Variable]: Var Check handler fail %r - %g:%s\n", Status, VendorGuid, VariableName));\r
- return Status;\r
- }\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Reallocates more global memory to store the registered handler list.\r
-\r
- @retval RETURN_SUCCESS Reallocate memory successfully.\r
- @retval RETURN_OUT_OF_RESOURCES No enough memory to allocate.\r
-\r
-**/\r
-RETURN_STATUS\r
-EFIAPI\r
-ReallocateHandlerTable (\r
- VOID\r
- )\r
-{\r
- VAR_CHECK_SET_VARIABLE_CHECK_HANDLER *HandlerTable;\r
-\r
- //\r
- // Reallocate memory for check handler table.\r
- //\r
- HandlerTable = ReallocateRuntimePool (\r
- mMaxNumberOfHandler * sizeof (VAR_CHECK_SET_VARIABLE_CHECK_HANDLER), \r
- (mMaxNumberOfHandler + VAR_CHECK_HANDLER_TABLE_SIZE) * sizeof (VAR_CHECK_SET_VARIABLE_CHECK_HANDLER), \r
- mHandlerTable\r
- );\r
-\r
- //\r
- // No enough resource to allocate.\r
- //\r
- if (HandlerTable == NULL) {\r
- return RETURN_OUT_OF_RESOURCES;\r
- }\r
-\r
- mHandlerTable = HandlerTable;\r
- //\r
- // Increase max handler number.\r
- //\r
- mMaxNumberOfHandler = mMaxNumberOfHandler + VAR_CHECK_HANDLER_TABLE_SIZE;\r
- return RETURN_SUCCESS;\r
-}\r
-\r
-/**\r
- Register SetVariable check handler.\r
-\r
- @param[in] Handler Pointer to check handler.\r
-\r
- @retval EFI_SUCCESS The SetVariable check handler was registered successfully.\r
- @retval EFI_INVALID_PARAMETER Handler is NULL.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource for the SetVariable check handler register request.\r
- @retval EFI_UNSUPPORTED This interface is not implemented.\r
- For example, it is unsupported in VarCheck protocol if both VarCheck and SmmVarCheck protocols are present.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckRegisterSetVariableCheckHandler (\r
- IN VAR_CHECK_SET_VARIABLE_CHECK_HANDLER Handler\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- if (Handler == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (mEndOfDxe) {\r
- return EFI_ACCESS_DENIED;\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "RegisterSetVariableCheckHandler - 0x%x\n", Handler));\r
-\r
- //\r
- // Check whether the handler list is enough to store new handler.\r
- //\r
- if (mNumberOfHandler == mMaxNumberOfHandler) {\r
- //\r
- // Allocate more resources for new handler.\r
- //\r
- Status = ReallocateHandlerTable();\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\r
-\r
- //\r
- // Register new handler into the handler list.\r
- //\r
- mHandlerTable[mNumberOfHandler] = Handler;\r
- mNumberOfHandler ++;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Variable property get function.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[in] WildcardMatch Try wildcard match or not.\r
-\r
- @return Pointer to the property of variable specified by the Name and Guid.\r
-\r
-**/\r
-VAR_CHECK_VARIABLE_PROPERTY *\r
-VariablePropertyGetFunction (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- IN BOOLEAN WildcardMatch\r
- )\r
-{\r
- LIST_ENTRY *Link;\r
- VAR_CHECK_VARIABLE_ENTRY *Entry;\r
- CHAR16 *VariableName;\r
- VAR_CHECK_VARIABLE_PROPERTY *Property;\r
-\r
- for ( Link = GetFirstNode (&mVarCheckVariableList)\r
- ; !IsNull (&mVarCheckVariableList, Link)\r
- ; Link = GetNextNode (&mVarCheckVariableList, Link)\r
- ) {\r
- Entry = BASE_CR (Link, VAR_CHECK_VARIABLE_ENTRY, Link);\r
- VariableName = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r
- if (CompareGuid (&Entry->Guid, Guid) && (StrCmp (VariableName, Name) == 0)) {\r
- return &Entry->VariableProperty;\r
- }\r
- }\r
-\r
- Property = GetVariableDriverVariableProperty (Name, Guid);\r
- if (Property == NULL) {\r
- GetUefiDefinedVariableProperty (Name, Guid, WildcardMatch, &Property, NULL);\r
- }\r
-\r
- return Property;\r
-}\r
-\r
-/**\r
- Variable property set.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[in] VariableProperty Pointer to the input variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was set successfully.\r
- @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string,\r
- or the fields of VariableProperty are not valid.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource for the variable property set request.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckVariablePropertySet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VAR_CHECK_VARIABLE_ENTRY *Entry;\r
- CHAR16 *VariableName;\r
- VAR_CHECK_VARIABLE_PROPERTY *Property;\r
-\r
- if (Name == NULL || Name[0] == 0 || Guid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableProperty == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableProperty->Revision != VAR_CHECK_VARIABLE_PROPERTY_REVISION) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (mEndOfDxe) {\r
- return EFI_ACCESS_DENIED;\r
- }\r
-\r
- Status = EFI_SUCCESS;\r
-\r
- AcquireLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- Property = VariablePropertyGetFunction (Name, Guid, FALSE);\r
- if (Property != NULL) {\r
- CopyMem (Property, VariableProperty, sizeof (*VariableProperty));\r
- } else {\r
- Entry = AllocateRuntimeZeroPool (sizeof (*Entry) + StrSize (Name));\r
- if (Entry == NULL) {\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto Done;\r
- }\r
- VariableName = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r
- StrnCpy (VariableName, Name, StrLen (Name));\r
- CopyGuid (&Entry->Guid, Guid);\r
- CopyMem (&Entry->VariableProperty, VariableProperty, sizeof (*VariableProperty));\r
- InsertTailList (&mVarCheckVariableList, &Entry->Link);\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Internal variable property get.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[out] VariableProperty Pointer to the output variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.\r
- @retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckVariablePropertyGet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- )\r
-{\r
- LIST_ENTRY *Link;\r
- VARIABLE_ENTRY *Entry;\r
- CHAR16 *VariableName;\r
- BOOLEAN Found;\r
- VAR_CHECK_VARIABLE_PROPERTY *Property;\r
-\r
- Found = FALSE;\r
-\r
- Property = VariablePropertyGetFunction (Name, Guid, TRUE);\r
- if (Property != NULL) {\r
- CopyMem (VariableProperty, Property, sizeof (*VariableProperty));\r
- Found = TRUE;\r
- }\r
-\r
- for ( Link = GetFirstNode (&mLockedVariableList)\r
- ; !IsNull (&mLockedVariableList, Link)\r
- ; Link = GetNextNode (&mLockedVariableList, Link)\r
- ) {\r
- Entry = BASE_CR (Link, VARIABLE_ENTRY, Link);\r
- VariableName = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r
- if (CompareGuid (&Entry->Guid, Guid) && (StrCmp (VariableName, Name) == 0)) {\r
- VariableProperty->Property |= VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY;\r
- if (!Found) {\r
- VariableProperty->Revision = VAR_CHECK_VARIABLE_PROPERTY_REVISION;\r
- Found = TRUE;\r
- }\r
- }\r
- }\r
-\r
- return (Found ? EFI_SUCCESS : EFI_NOT_FOUND);\r
-}\r
-\r
-/**\r
- Variable property get.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[out] VariableProperty Pointer to the output variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.\r
- @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string.\r
- @retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckVariablePropertyGet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- if (Name == NULL || Name[0] == 0 || Guid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableProperty == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- Status = InternalVarCheckVariablePropertyGet (Name, Guid, VariableProperty);\r
-\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- return Status;\r
-}\r
-\r
+++ /dev/null
-/** @file\r
- The common variable operation routines shared by DXE_RUNTIME variable\r
- module and DXE_SMM variable module.\r
-\r
- Caution: This module requires additional review when modified.\r
- This driver will have external input - variable data. They may be input in SMM mode.\r
- This external input must be validated carefully to avoid security issue like\r
- buffer overflow, integer overflow.\r
-\r
- VariableServiceGetNextVariableName () and VariableServiceQueryVariableInfo() are external API.\r
- They need check input parameter.\r
-\r
- VariableServiceGetVariable() and VariableServiceSetVariable() are external API\r
- to receive datasize and data buffer. The size should be checked carefully.\r
-\r
- VariableServiceSetVariable() should also check authenticate data to avoid buffer overflow,\r
- integer overflow. It should also check attribute to avoid authentication bypass.\r
-\r
-Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "Variable.h"\r
-#include "AuthService.h"\r
-\r
-VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r
-\r
-///\r
-/// Define a memory cache that improves the search performance for a variable.\r
-///\r
-VARIABLE_STORE_HEADER *mNvVariableCache = NULL;\r
-\r
-///\r
-/// The memory entry used for variable statistics data.\r
-///\r
-VARIABLE_INFO_ENTRY *gVariableInfo = NULL;\r
-\r
-///\r
-/// The list to store the variables which cannot be set after the EFI_END_OF_DXE_EVENT_GROUP_GUID\r
-/// or EVT_GROUP_READY_TO_BOOT event.\r
-///\r
-LIST_ENTRY mLockedVariableList = INITIALIZE_LIST_HEAD_VARIABLE (mLockedVariableList);\r
-\r
-///\r
-/// The flag to indicate whether the platform has left the DXE phase of execution.\r
-///\r
-BOOLEAN mEndOfDxe = FALSE;\r
-\r
-///\r
-/// The flag to indicate whether the variable storage locking is enabled.\r
-///\r
-BOOLEAN mEnableLocking = TRUE;\r
-\r
-//\r
-// It will record the current boot error flag before EndOfDxe.\r
-//\r
-VAR_ERROR_FLAG mCurrentBootVarErrFlag = VAR_ERROR_FLAG_NO_ERROR;\r
-\r
-/**\r
-\r
- SecureBoot Hook for auth variable update.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
-**/\r
-VOID\r
-EFIAPI\r
-SecureBootHook (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- );\r
-\r
-/**\r
- Routine used to track statistical information about variable usage.\r
- The data is stored in the EFI system table so it can be accessed later.\r
- VariableInfo.efi can dump out the table. Only Boot Services variable\r
- accesses are tracked by this code. The PcdVariableCollectStatistics\r
- build flag controls if this feature is enabled.\r
-\r
- A read that hits in the cache will have Read and Cache true for\r
- the transaction. Data is allocated by this routine, but never\r
- freed.\r
-\r
- @param[in] VariableName Name of the Variable to track.\r
- @param[in] VendorGuid Guid of the Variable to track.\r
- @param[in] Volatile TRUE if volatile FALSE if non-volatile.\r
- @param[in] Read TRUE if GetVariable() was called.\r
- @param[in] Write TRUE if SetVariable() was called.\r
- @param[in] Delete TRUE if deleted via SetVariable().\r
- @param[in] Cache TRUE for a cache hit.\r
-\r
-**/\r
-VOID\r
-UpdateVariableInfo (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN BOOLEAN Volatile,\r
- IN BOOLEAN Read,\r
- IN BOOLEAN Write,\r
- IN BOOLEAN Delete,\r
- IN BOOLEAN Cache\r
- )\r
-{\r
- VARIABLE_INFO_ENTRY *Entry;\r
-\r
- if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r
-\r
- if (AtRuntime ()) {\r
- // Don't collect statistics at runtime.\r
- return;\r
- }\r
-\r
- if (gVariableInfo == NULL) {\r
- //\r
- // On the first call allocate a entry and place a pointer to it in\r
- // the EFI System Table.\r
- //\r
- gVariableInfo = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r
- ASSERT (gVariableInfo != NULL);\r
-\r
- CopyGuid (&gVariableInfo->VendorGuid, VendorGuid);\r
- gVariableInfo->Name = AllocatePool (StrSize (VariableName));\r
- ASSERT (gVariableInfo->Name != NULL);\r
- StrCpy (gVariableInfo->Name, VariableName);\r
- gVariableInfo->Volatile = Volatile;\r
- }\r
-\r
-\r
- for (Entry = gVariableInfo; Entry != NULL; Entry = Entry->Next) {\r
- if (CompareGuid (VendorGuid, &Entry->VendorGuid)) {\r
- if (StrCmp (VariableName, Entry->Name) == 0) {\r
- if (Read) {\r
- Entry->ReadCount++;\r
- }\r
- if (Write) {\r
- Entry->WriteCount++;\r
- }\r
- if (Delete) {\r
- Entry->DeleteCount++;\r
- }\r
- if (Cache) {\r
- Entry->CacheCount++;\r
- }\r
-\r
- return;\r
- }\r
- }\r
-\r
- if (Entry->Next == NULL) {\r
- //\r
- // If the entry is not in the table add it.\r
- // Next iteration of the loop will fill in the data.\r
- //\r
- Entry->Next = AllocateZeroPool (sizeof (VARIABLE_INFO_ENTRY));\r
- ASSERT (Entry->Next != NULL);\r
-\r
- CopyGuid (&Entry->Next->VendorGuid, VendorGuid);\r
- Entry->Next->Name = AllocatePool (StrSize (VariableName));\r
- ASSERT (Entry->Next->Name != NULL);\r
- StrCpy (Entry->Next->Name, VariableName);\r
- Entry->Next->Volatile = Volatile;\r
- }\r
-\r
- }\r
- }\r
-}\r
-\r
-\r
-/**\r
-\r
- This code checks if variable header is valid or not.\r
-\r
- @param Variable Pointer to the Variable Header.\r
- @param VariableStoreEnd Pointer to the Variable Store End.\r
-\r
- @retval TRUE Variable header is valid.\r
- @retval FALSE Variable header is not valid.\r
-\r
-**/\r
-BOOLEAN\r
-IsValidVariableHeader (\r
- IN VARIABLE_HEADER *Variable,\r
- IN VARIABLE_HEADER *VariableStoreEnd\r
- )\r
-{\r
- if ((Variable == NULL) || (Variable >= VariableStoreEnd) || (Variable->StartId != VARIABLE_DATA)) {\r
- //\r
- // Variable is NULL or has reached the end of variable store,\r
- // or the StartId is not correct.\r
- //\r
- return FALSE;\r
- }\r
-\r
- return TRUE;\r
-}\r
-\r
-\r
-/**\r
-\r
- This function writes data to the FWH at the correct LBA even if the LBAs\r
- are fragmented.\r
-\r
- @param Global Pointer to VARAIBLE_GLOBAL structure.\r
- @param Volatile Point out the Variable is Volatile or Non-Volatile.\r
- @param SetByIndex TRUE if target pointer is given as index.\r
- FALSE if target pointer is absolute.\r
- @param Fvb Pointer to the writable FVB protocol.\r
- @param DataPtrIndex Pointer to the Data from the end of VARIABLE_STORE_HEADER\r
- structure.\r
- @param DataSize Size of data to be written.\r
- @param Buffer Pointer to the buffer from which data is written.\r
-\r
- @retval EFI_INVALID_PARAMETER Parameters not valid.\r
- @retval EFI_SUCCESS Variable store successfully updated.\r
-\r
-**/\r
-EFI_STATUS\r
-UpdateVariableStore (\r
- IN VARIABLE_GLOBAL *Global,\r
- IN BOOLEAN Volatile,\r
- IN BOOLEAN SetByIndex,\r
- IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb,\r
- IN UINTN DataPtrIndex,\r
- IN UINT32 DataSize,\r
- IN UINT8 *Buffer\r
- )\r
-{\r
- EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry;\r
- UINTN BlockIndex2;\r
- UINTN LinearOffset;\r
- UINTN CurrWriteSize;\r
- UINTN CurrWritePtr;\r
- UINT8 *CurrBuffer;\r
- EFI_LBA LbaNumber;\r
- UINTN Size;\r
- EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
- VARIABLE_STORE_HEADER *VolatileBase;\r
- EFI_PHYSICAL_ADDRESS FvVolHdr;\r
- EFI_PHYSICAL_ADDRESS DataPtr;\r
- EFI_STATUS Status;\r
-\r
- FwVolHeader = NULL;\r
- DataPtr = DataPtrIndex;\r
-\r
- //\r
- // Check if the Data is Volatile.\r
- //\r
- if (!Volatile) {\r
- if (Fvb == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- Status = Fvb->GetPhysicalAddress(Fvb, &FvVolHdr);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvVolHdr);\r
- //\r
- // Data Pointer should point to the actual Address where data is to be\r
- // written.\r
- //\r
- if (SetByIndex) {\r
- DataPtr += mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r
- }\r
-\r
- if ((DataPtr + DataSize) >= ((EFI_PHYSICAL_ADDRESS) (UINTN) ((UINT8 *) FwVolHeader + FwVolHeader->FvLength))) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- } else {\r
- //\r
- // Data Pointer should point to the actual Address where data is to be\r
- // written.\r
- //\r
- VolatileBase = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r
- if (SetByIndex) {\r
- DataPtr += mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r
- }\r
-\r
- if ((DataPtr + DataSize) >= ((UINTN) ((UINT8 *) VolatileBase + VolatileBase->Size))) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // If Volatile Variable just do a simple mem copy.\r
- //\r
- CopyMem ((UINT8 *)(UINTN)DataPtr, Buffer, DataSize);\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // If we are here we are dealing with Non-Volatile Variables.\r
- //\r
- LinearOffset = (UINTN) FwVolHeader;\r
- CurrWritePtr = (UINTN) DataPtr;\r
- CurrWriteSize = DataSize;\r
- CurrBuffer = Buffer;\r
- LbaNumber = 0;\r
-\r
- if (CurrWritePtr < LinearOffset) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- for (PtrBlockMapEntry = FwVolHeader->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) {\r
- for (BlockIndex2 = 0; BlockIndex2 < PtrBlockMapEntry->NumBlocks; BlockIndex2++) {\r
- //\r
- // Check to see if the Variable Writes are spanning through multiple\r
- // blocks.\r
- //\r
- if ((CurrWritePtr >= LinearOffset) && (CurrWritePtr < LinearOffset + PtrBlockMapEntry->Length)) {\r
- if ((CurrWritePtr + CurrWriteSize) <= (LinearOffset + PtrBlockMapEntry->Length)) {\r
- Status = Fvb->Write (\r
- Fvb,\r
- LbaNumber,\r
- (UINTN) (CurrWritePtr - LinearOffset),\r
- &CurrWriteSize,\r
- CurrBuffer\r
- );\r
- return Status;\r
- } else {\r
- Size = (UINT32) (LinearOffset + PtrBlockMapEntry->Length - CurrWritePtr);\r
- Status = Fvb->Write (\r
- Fvb,\r
- LbaNumber,\r
- (UINTN) (CurrWritePtr - LinearOffset),\r
- &Size,\r
- CurrBuffer\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- CurrWritePtr = LinearOffset + PtrBlockMapEntry->Length;\r
- CurrBuffer = CurrBuffer + Size;\r
- CurrWriteSize = CurrWriteSize - Size;\r
- }\r
- }\r
-\r
- LinearOffset += PtrBlockMapEntry->Length;\r
- LbaNumber++;\r
- }\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
-\r
- This code gets the current status of Variable Store.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @retval EfiRaw Variable store status is raw.\r
- @retval EfiValid Variable store status is valid.\r
- @retval EfiInvalid Variable store status is invalid.\r
-\r
-**/\r
-VARIABLE_STORE_STATUS\r
-GetVariableStoreStatus (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- )\r
-{\r
- if (CompareGuid (&VarStoreHeader->Signature, &gEfiAuthenticatedVariableGuid) &&\r
- VarStoreHeader->Format == VARIABLE_STORE_FORMATTED &&\r
- VarStoreHeader->State == VARIABLE_STORE_HEALTHY\r
- ) {\r
-\r
- return EfiValid;\r
- } else if (((UINT32 *)(&VarStoreHeader->Signature))[0] == 0xffffffff &&\r
- ((UINT32 *)(&VarStoreHeader->Signature))[1] == 0xffffffff &&\r
- ((UINT32 *)(&VarStoreHeader->Signature))[2] == 0xffffffff &&\r
- ((UINT32 *)(&VarStoreHeader->Signature))[3] == 0xffffffff &&\r
- VarStoreHeader->Size == 0xffffffff &&\r
- VarStoreHeader->Format == 0xff &&\r
- VarStoreHeader->State == 0xff\r
- ) {\r
-\r
- return EfiRaw;\r
- } else {\r
- return EfiInvalid;\r
- }\r
-}\r
-\r
-\r
-/**\r
-\r
- This code gets the size of name of variable.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return UINTN Size of variable in bytes.\r
-\r
-**/\r
-UINTN\r
-NameSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- if (Variable->State == (UINT8) (-1) ||\r
- Variable->DataSize == (UINT32) (-1) ||\r
- Variable->NameSize == (UINT32) (-1) ||\r
- Variable->Attributes == (UINT32) (-1)) {\r
- return 0;\r
- }\r
- return (UINTN) Variable->NameSize;\r
-}\r
-\r
-/**\r
-\r
- This code gets the size of variable data.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Size of variable in bytes.\r
-\r
-**/\r
-UINTN\r
-DataSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- if (Variable->State == (UINT8) (-1) ||\r
- Variable->DataSize == (UINT32) (-1) ||\r
- Variable->NameSize == (UINT32) (-1) ||\r
- Variable->Attributes == (UINT32) (-1)) {\r
- return 0;\r
- }\r
- return (UINTN) Variable->DataSize;\r
-}\r
-\r
-/**\r
-\r
- This code gets the pointer to the variable name.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Pointer to Variable Name which is Unicode encoding.\r
-\r
-**/\r
-CHAR16 *\r
-GetVariableNamePtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
-\r
- return (CHAR16 *) (Variable + 1);\r
-}\r
-\r
-/**\r
-\r
- This code gets the pointer to the variable data.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Pointer to Variable Data.\r
-\r
-**/\r
-UINT8 *\r
-GetVariableDataPtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- UINTN Value;\r
-\r
- //\r
- // Be careful about pad size for alignment.\r
- //\r
- Value = (UINTN) GetVariableNamePtr (Variable);\r
- Value += NameSizeOfVariable (Variable);\r
- Value += GET_PAD_SIZE (NameSizeOfVariable (Variable));\r
-\r
- return (UINT8 *) Value;\r
-}\r
-\r
-\r
-/**\r
-\r
- This code gets the pointer to the next variable header.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Pointer to next variable header.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetNextVariablePtr (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- UINTN Value;\r
-\r
- Value = (UINTN) GetVariableDataPtr (Variable);\r
- Value += DataSizeOfVariable (Variable);\r
- Value += GET_PAD_SIZE (DataSizeOfVariable (Variable));\r
-\r
- //\r
- // Be careful about pad size for alignment.\r
- //\r
- return (VARIABLE_HEADER *) HEADER_ALIGN (Value);\r
-}\r
-\r
-/**\r
-\r
- Gets the pointer to the first variable header in given variable store area.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @return Pointer to the first variable header.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetStartPointer (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- )\r
-{\r
- //\r
- // The end of variable store.\r
- //\r
- return (VARIABLE_HEADER *) HEADER_ALIGN (VarStoreHeader + 1);\r
-}\r
-\r
-/**\r
-\r
- Gets the pointer to the end of the variable storage area.\r
-\r
- This function gets pointer to the end of the variable storage\r
- area, according to the input variable store header.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @return Pointer to the end of the variable storage area.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetEndPointer (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- )\r
-{\r
- //\r
- // The end of variable store\r
- //\r
- return (VARIABLE_HEADER *) HEADER_ALIGN ((UINTN) VarStoreHeader + VarStoreHeader->Size);\r
-}\r
-\r
-/**\r
- Record variable error flag.\r
-\r
- @param[in] Flag Variable error flag to record.\r
- @param[in] VariableName Name of variable.\r
- @param[in] VendorGuid Guid of variable.\r
- @param[in] Attributes Attributes of the variable.\r
- @param[in] VariableSize Size of the variable.\r
-\r
-**/\r
-VOID\r
-RecordVarErrorFlag (\r
- IN VAR_ERROR_FLAG Flag,\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN VariableSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
- VAR_ERROR_FLAG *VarErrFlag;\r
- VAR_ERROR_FLAG TempFlag;\r
-\r
- DEBUG_CODE (\r
- DEBUG ((EFI_D_ERROR, "RecordVarErrorFlag (0x%02x) %s:%g - 0x%08x - 0x%x\n", Flag, VariableName, VendorGuid, Attributes, VariableSize));\r
- if (Flag == VAR_ERROR_FLAG_SYSTEM_ERROR) {\r
- if (AtRuntime ()) {\r
- DEBUG ((EFI_D_ERROR, "CommonRuntimeVariableSpace = 0x%x - CommonVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonRuntimeVariableSpace, mVariableModuleGlobal->CommonVariableTotalSize));\r
- } else {\r
- DEBUG ((EFI_D_ERROR, "CommonVariableSpace = 0x%x - CommonVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonVariableSpace, mVariableModuleGlobal->CommonVariableTotalSize));\r
- }\r
- } else {\r
- DEBUG ((EFI_D_ERROR, "CommonMaxUserVariableSpace = 0x%x - CommonUserVariableTotalSize = 0x%x\n", mVariableModuleGlobal->CommonMaxUserVariableSpace, mVariableModuleGlobal->CommonUserVariableTotalSize));\r
- }\r
- );\r
-\r
- if (!mEndOfDxe) {\r
- //\r
- // Before EndOfDxe, just record the current boot variable error flag to local variable,\r
- // and leave the variable error flag in NV flash as the last boot variable error flag.\r
- // After EndOfDxe in InitializeVarErrorFlag (), the variable error flag in NV flash\r
- // will be initialized to this local current boot variable error flag.\r
- //\r
- mCurrentBootVarErrFlag &= Flag;\r
- return;\r
- }\r
-\r
- //\r
- // Record error flag (it should have be initialized).\r
- //\r
- Status = FindVariable (\r
- VAR_ERROR_FLAG_NAME,\r
- &gEdkiiVarErrorFlagGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- VarErrFlag = (VAR_ERROR_FLAG *) GetVariableDataPtr (Variable.CurrPtr);\r
- TempFlag = *VarErrFlag;\r
- TempFlag &= Flag;\r
- if (TempFlag == *VarErrFlag) {\r
- return;\r
- }\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE,\r
- FALSE,\r
- mVariableModuleGlobal->FvbInstance,\r
- (UINTN) VarErrFlag - (UINTN) mNvVariableCache + (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
- sizeof (TempFlag),\r
- &TempFlag\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Update the data in NV cache.\r
- //\r
- *VarErrFlag = Flag;\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Initialize variable error flag.\r
-\r
- Before EndOfDxe, the variable indicates the last boot variable error flag,\r
- then it means the last boot variable error flag must be got before EndOfDxe.\r
- After EndOfDxe, the variable indicates the current boot variable error flag,\r
- then it means the current boot variable error flag must be got after EndOfDxe.\r
-\r
-**/\r
-VOID\r
-InitializeVarErrorFlag (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
- VAR_ERROR_FLAG Flag;\r
- VAR_ERROR_FLAG VarErrFlag;\r
-\r
- if (!mEndOfDxe) {\r
- return;\r
- }\r
-\r
- Flag = mCurrentBootVarErrFlag;\r
- DEBUG ((EFI_D_INFO, "Initialize variable error flag (%02x)\n", Flag));\r
-\r
- Status = FindVariable (\r
- VAR_ERROR_FLAG_NAME,\r
- &gEdkiiVarErrorFlagGuid,\r
- &Variable,\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- VarErrFlag = *((VAR_ERROR_FLAG *) GetVariableDataPtr (Variable.CurrPtr));\r
- if (VarErrFlag == Flag) {\r
- return;\r
- }\r
- }\r
-\r
- UpdateVariable (\r
- VAR_ERROR_FLAG_NAME,\r
- &gEdkiiVarErrorFlagGuid,\r
- &Flag,\r
- sizeof (Flag),\r
- VARIABLE_ATTRIBUTE_NV_BS_RT,\r
- 0,\r
- 0,\r
- &Variable,\r
- NULL\r
- );\r
-}\r
-\r
-/**\r
- Is user variable?\r
-\r
- @param[in] Variable Pointer to variable header.\r
-\r
- @retval TRUE User variable.\r
- @retval FALSE System variable.\r
-\r
-**/\r
-BOOLEAN\r
-IsUserVariable (\r
- IN VARIABLE_HEADER *Variable\r
- )\r
-{\r
- VAR_CHECK_VARIABLE_PROPERTY Property;\r
-\r
- //\r
- // Only after End Of Dxe, the variables belong to system variable are fixed.\r
- // If PcdMaxUserNvStorageVariableSize is 0, it means user variable share the same NV storage with system variable,\r
- // then no need to check if the variable is user variable or not specially.\r
- //\r
- if (mEndOfDxe && (mVariableModuleGlobal->CommonMaxUserVariableSpace != mVariableModuleGlobal->CommonVariableSpace)) {\r
- if (InternalVarCheckVariablePropertyGet (GetVariableNamePtr (Variable), &Variable->VendorGuid, &Property) == EFI_NOT_FOUND) {\r
- return TRUE;\r
- }\r
- }\r
- return FALSE;\r
-}\r
-\r
-/**\r
- Calculate common user variable total size.\r
-\r
-**/\r
-VOID\r
-CalculateCommonUserVariableTotalSize (\r
- VOID\r
- )\r
-{\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *NextVariable;\r
- UINTN VariableSize;\r
- VAR_CHECK_VARIABLE_PROPERTY Property;\r
-\r
- //\r
- // Only after End Of Dxe, the variables belong to system variable are fixed.\r
- // If PcdMaxUserNvStorageVariableSize is 0, it means user variable share the same NV storage with system variable,\r
- // then no need to calculate the common user variable total size specially.\r
- //\r
- if (mEndOfDxe && (mVariableModuleGlobal->CommonMaxUserVariableSpace != mVariableModuleGlobal->CommonVariableSpace)) {\r
- Variable = GetStartPointer (mNvVariableCache);\r
- while (IsValidVariableHeader (Variable, GetEndPointer (mNvVariableCache))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- if (InternalVarCheckVariablePropertyGet (GetVariableNamePtr (Variable), &Variable->VendorGuid, &Property) == EFI_NOT_FOUND) {\r
- //\r
- // No property, it is user variable.\r
- //\r
- mVariableModuleGlobal->CommonUserVariableTotalSize += VariableSize;\r
- }\r
- }\r
-\r
- Variable = NextVariable;\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Initialize variable quota.\r
-\r
-**/\r
-VOID\r
-InitializeVariableQuota (\r
- VOID\r
- )\r
-{\r
- STATIC BOOLEAN Initialized;\r
-\r
- if (!mEndOfDxe || Initialized) {\r
- return;\r
- }\r
- Initialized = TRUE;\r
-\r
- InitializeVarErrorFlag ();\r
- CalculateCommonUserVariableTotalSize ();\r
-}\r
-\r
-/**\r
-\r
- Check the PubKeyIndex is a valid key or not.\r
-\r
- This function will iterate the NV storage to see if this PubKeyIndex is still referenced\r
- by any valid count-based auth variabe.\r
-\r
- @param[in] PubKeyIndex Index of the public key in public key store.\r
-\r
- @retval TRUE The PubKeyIndex is still in use.\r
- @retval FALSE The PubKeyIndex is not referenced by any count-based auth variabe.\r
-\r
-**/\r
-BOOLEAN\r
-IsValidPubKeyIndex (\r
- IN UINT32 PubKeyIndex\r
- )\r
-{\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *VariableStoreEnd;\r
-\r
- if (PubKeyIndex > mPubKeyNumber) {\r
- return FALSE;\r
- }\r
-\r
- Variable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
- VariableStoreEnd = GetEndPointer ((VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
-\r
- while (IsValidVariableHeader (Variable, VariableStoreEnd)) {\r
- if ((Variable->State == VAR_ADDED || Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) &&\r
- Variable->PubKeyIndex == PubKeyIndex) {\r
- return TRUE;\r
- }\r
- Variable = GetNextVariablePtr (Variable);\r
- }\r
-\r
- return FALSE;\r
-}\r
-\r
-/**\r
-\r
- Get the number of valid public key in PubKeyStore.\r
-\r
- @param[in] PubKeyNumber Number of the public key in public key store.\r
-\r
- @return Number of valid public key in PubKeyStore.\r
-\r
-**/\r
-UINT32\r
-GetValidPubKeyNumber (\r
- IN UINT32 PubKeyNumber\r
- )\r
-{\r
- UINT32 PubKeyIndex;\r
- UINT32 Counter;\r
-\r
- Counter = 0;\r
-\r
- for (PubKeyIndex = 1; PubKeyIndex <= PubKeyNumber; PubKeyIndex++) {\r
- if (IsValidPubKeyIndex (PubKeyIndex)) {\r
- Counter++;\r
- }\r
- }\r
-\r
- return Counter;\r
-}\r
-\r
-/**\r
-\r
- Filter the useless key in public key store.\r
-\r
- This function will find out all valid public keys in public key database, save them in new allocated\r
- buffer NewPubKeyStore, and give the new PubKeyIndex. The caller is responsible for freeing buffer\r
- NewPubKeyIndex and NewPubKeyStore with FreePool().\r
-\r
- @param[in] PubKeyStore Point to the public key database.\r
- @param[in] PubKeyNumber Number of the public key in PubKeyStore.\r
- @param[out] NewPubKeyIndex Point to an array of new PubKeyIndex corresponds to NewPubKeyStore.\r
- @param[out] NewPubKeyStore Saved all valid public keys in PubKeyStore.\r
- @param[out] NewPubKeySize Buffer size of the NewPubKeyStore.\r
-\r
- @retval EFI_SUCCESS Trim operation is complete successfully.\r
- @retval EFI_OUT_OF_RESOURCES No enough memory resources, or no useless key in PubKeyStore.\r
-\r
-**/\r
-EFI_STATUS\r
-PubKeyStoreFilter (\r
- IN UINT8 *PubKeyStore,\r
- IN UINT32 PubKeyNumber,\r
- OUT UINT32 **NewPubKeyIndex,\r
- OUT UINT8 **NewPubKeyStore,\r
- OUT UINT32 *NewPubKeySize\r
- )\r
-{\r
- UINT32 PubKeyIndex;\r
- UINT32 CopiedKey;\r
- UINT32 NewPubKeyNumber;\r
-\r
- NewPubKeyNumber = GetValidPubKeyNumber (PubKeyNumber);\r
- if (NewPubKeyNumber == PubKeyNumber) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- if (NewPubKeyNumber != 0) {\r
- *NewPubKeySize = NewPubKeyNumber * EFI_CERT_TYPE_RSA2048_SIZE;\r
- } else {\r
- *NewPubKeySize = sizeof (UINT8);\r
- }\r
-\r
- *NewPubKeyStore = AllocatePool (*NewPubKeySize);\r
- if (*NewPubKeyStore == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- *NewPubKeyIndex = AllocateZeroPool ((PubKeyNumber + 1) * sizeof (UINT32));\r
- if (*NewPubKeyIndex == NULL) {\r
- FreePool (*NewPubKeyStore);\r
- *NewPubKeyStore = NULL;\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- CopiedKey = 0;\r
- for (PubKeyIndex = 1; PubKeyIndex <= PubKeyNumber; PubKeyIndex++) {\r
- if (IsValidPubKeyIndex (PubKeyIndex)) {\r
- CopyMem (\r
- *NewPubKeyStore + CopiedKey * EFI_CERT_TYPE_RSA2048_SIZE,\r
- PubKeyStore + (PubKeyIndex - 1) * EFI_CERT_TYPE_RSA2048_SIZE,\r
- EFI_CERT_TYPE_RSA2048_SIZE\r
- );\r
- (*NewPubKeyIndex)[PubKeyIndex] = ++CopiedKey;\r
- }\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
-\r
- Variable store garbage collection and reclaim operation.\r
-\r
- If ReclaimPubKeyStore is FALSE, reclaim variable space by deleting the obsoleted varaibles.\r
- If ReclaimPubKeyStore is TRUE, reclaim invalid key in public key database and update the PubKeyIndex\r
- for all the count-based authenticate variable in NV storage.\r
-\r
- @param[in] VariableBase Base address of variable store.\r
- @param[out] LastVariableOffset Offset of last variable.\r
- @param[in] IsVolatile The variable store is volatile or not;\r
- if it is non-volatile, need FTW.\r
- @param[in, out] UpdatingPtrTrack Pointer to updating variable pointer track structure.\r
- @param[in] NewVariable Pointer to new variable.\r
- @param[in] NewVariableSize New variable size.\r
- @param[in] ReclaimPubKeyStore Reclaim for public key database or not.\r
-\r
- @return EFI_SUCCESS Reclaim operation has finished successfully.\r
- @return EFI_OUT_OF_RESOURCES No enough memory resources or variable space.\r
- @return EFI_DEVICE_ERROR The public key database doesn't exist.\r
- @return Others Unexpect error happened during reclaim operation.\r
-\r
-**/\r
-EFI_STATUS\r
-Reclaim (\r
- IN EFI_PHYSICAL_ADDRESS VariableBase,\r
- OUT UINTN *LastVariableOffset,\r
- IN BOOLEAN IsVolatile,\r
- IN OUT VARIABLE_POINTER_TRACK *UpdatingPtrTrack,\r
- IN VARIABLE_HEADER *NewVariable,\r
- IN UINTN NewVariableSize,\r
- IN BOOLEAN ReclaimPubKeyStore\r
- )\r
-{\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *AddedVariable;\r
- VARIABLE_HEADER *NextVariable;\r
- VARIABLE_HEADER *NextAddedVariable;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- UINT8 *ValidBuffer;\r
- UINTN MaximumBufferSize;\r
- UINTN VariableSize;\r
- UINTN NameSize;\r
- UINT8 *CurrPtr;\r
- VOID *Point0;\r
- VOID *Point1;\r
- BOOLEAN FoundAdded;\r
- EFI_STATUS Status;\r
- UINTN CommonVariableTotalSize;\r
- UINTN CommonUserVariableTotalSize;\r
- UINTN HwErrVariableTotalSize;\r
- UINT32 *NewPubKeyIndex;\r
- UINT8 *NewPubKeyStore;\r
- UINT32 NewPubKeySize;\r
- VARIABLE_HEADER *PubKeyHeader;\r
- VARIABLE_HEADER *UpdatingVariable;\r
- VARIABLE_HEADER *UpdatingInDeletedTransition;\r
-\r
- UpdatingVariable = NULL;\r
- UpdatingInDeletedTransition = NULL;\r
- if (UpdatingPtrTrack != NULL) {\r
- UpdatingVariable = UpdatingPtrTrack->CurrPtr;\r
- UpdatingInDeletedTransition = UpdatingPtrTrack->InDeletedTransitionPtr;\r
- }\r
-\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) VariableBase);\r
-\r
- CommonVariableTotalSize = 0;\r
- CommonUserVariableTotalSize = 0;\r
- HwErrVariableTotalSize = 0;\r
- NewPubKeyIndex = NULL;\r
- NewPubKeyStore = NULL;\r
- NewPubKeySize = 0;\r
- PubKeyHeader = NULL;\r
-\r
- if (IsVolatile) {\r
- //\r
- // Start Pointers for the variable.\r
- //\r
- Variable = GetStartPointer (VariableStoreHeader);\r
- MaximumBufferSize = sizeof (VARIABLE_STORE_HEADER);\r
-\r
- while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- if ((Variable->State == VAR_ADDED || Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) &&\r
- Variable != UpdatingVariable &&\r
- Variable != UpdatingInDeletedTransition\r
- ) {\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- MaximumBufferSize += VariableSize;\r
- }\r
-\r
- Variable = NextVariable;\r
- }\r
-\r
- if (NewVariable != NULL) {\r
- //\r
- // Add the new variable size.\r
- //\r
- MaximumBufferSize += NewVariableSize;\r
- }\r
-\r
- //\r
- // Reserve the 1 Bytes with Oxff to identify the\r
- // end of the variable buffer.\r
- //\r
- MaximumBufferSize += 1;\r
- ValidBuffer = AllocatePool (MaximumBufferSize);\r
- if (ValidBuffer == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- } else {\r
- //\r
- // For NV variable reclaim, don't allocate pool here and just use mNvVariableCache\r
- // as the buffer to reduce SMRAM consumption for SMM variable driver.\r
- //\r
- MaximumBufferSize = mNvVariableCache->Size;\r
- ValidBuffer = (UINT8 *) mNvVariableCache;\r
- }\r
-\r
- SetMem (ValidBuffer, MaximumBufferSize, 0xff);\r
-\r
- //\r
- // Copy variable store header.\r
- //\r
- CopyMem (ValidBuffer, VariableStoreHeader, sizeof (VARIABLE_STORE_HEADER));\r
- CurrPtr = (UINT8 *) GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r
-\r
- if (ReclaimPubKeyStore) {\r
- ASSERT (IsVolatile == FALSE);\r
- //\r
- // Trim the PubKeyStore and get new PubKeyIndex.\r
- //\r
- Status = PubKeyStoreFilter (\r
- mPubKeyStore,\r
- mPubKeyNumber,\r
- &NewPubKeyIndex,\r
- &NewPubKeyStore,\r
- &NewPubKeySize\r
- );\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT ((NewPubKeyIndex != NULL) && (NewPubKeyStore != NULL));\r
-\r
- //\r
- // Refresh the PubKeyIndex for all valid variables (ADDED and IN_DELETED_TRANSITION).\r
- //\r
- Variable = GetStartPointer (VariableStoreHeader);\r
- while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- if (Variable->State == VAR_ADDED || Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- if ((StrCmp (GetVariableNamePtr (Variable), AUTHVAR_KEYDB_NAME) == 0) &&\r
- (CompareGuid (&Variable->VendorGuid, &gEfiAuthenticatedVariableGuid))) {\r
- //\r
- // Skip the public key database, it will be reinstalled later.\r
- //\r
- PubKeyHeader = Variable;\r
- Variable = NextVariable;\r
- continue;\r
- }\r
-\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r
- ((VARIABLE_HEADER*) CurrPtr)->PubKeyIndex = NewPubKeyIndex[Variable->PubKeyIndex];\r
- CurrPtr += VariableSize;\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- CommonVariableTotalSize += VariableSize;\r
- if (IsUserVariable (Variable)) {\r
- CommonUserVariableTotalSize += VariableSize;\r
- }\r
- }\r
- }\r
- Variable = NextVariable;\r
- }\r
-\r
- //\r
- // Reinstall the new public key database.\r
- //\r
- ASSERT (PubKeyHeader != NULL);\r
- if (PubKeyHeader == NULL) {\r
- Status = EFI_DEVICE_ERROR;\r
- goto Done;\r
- }\r
- CopyMem (CurrPtr, (UINT8*) PubKeyHeader, sizeof (VARIABLE_HEADER));\r
- Variable = (VARIABLE_HEADER*) CurrPtr;\r
- Variable->DataSize = NewPubKeySize;\r
- StrCpy (GetVariableNamePtr (Variable), GetVariableNamePtr (PubKeyHeader));\r
- CopyMem (GetVariableDataPtr (Variable), NewPubKeyStore, NewPubKeySize);\r
- CurrPtr = (UINT8*) GetNextVariablePtr (Variable);\r
- CommonVariableTotalSize += (UINTN) CurrPtr - (UINTN) Variable;\r
- if (IsUserVariable (Variable)) {\r
- CommonUserVariableTotalSize += (UINTN) CurrPtr - (UINTN) Variable;\r
- }\r
- } else {\r
- //\r
- // Reinstall all ADDED variables as long as they are not identical to Updating Variable.\r
- //\r
- Variable = GetStartPointer (VariableStoreHeader);\r
- while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- if (Variable != UpdatingVariable && Variable->State == VAR_ADDED) {\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r
- CurrPtr += VariableSize;\r
- if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- CommonVariableTotalSize += VariableSize;\r
- if (IsUserVariable (Variable)) {\r
- CommonUserVariableTotalSize += VariableSize;\r
- }\r
- }\r
- }\r
- Variable = NextVariable;\r
- }\r
-\r
- //\r
- // Reinstall all in delete transition variables.\r
- //\r
- Variable = GetStartPointer (VariableStoreHeader);\r
- while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- if (Variable != UpdatingVariable && Variable != UpdatingInDeletedTransition && Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
-\r
- //\r
- // Buffer has cached all ADDED variable.\r
- // Per IN_DELETED variable, we have to guarantee that\r
- // no ADDED one in previous buffer.\r
- //\r
-\r
- FoundAdded = FALSE;\r
- AddedVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer);\r
- while (IsValidVariableHeader (AddedVariable, GetEndPointer ((VARIABLE_STORE_HEADER *) ValidBuffer))) {\r
- NextAddedVariable = GetNextVariablePtr (AddedVariable);\r
- NameSize = NameSizeOfVariable (AddedVariable);\r
- if (CompareGuid (&AddedVariable->VendorGuid, &Variable->VendorGuid) &&\r
- NameSize == NameSizeOfVariable (Variable)\r
- ) {\r
- Point0 = (VOID *) GetVariableNamePtr (AddedVariable);\r
- Point1 = (VOID *) GetVariableNamePtr (Variable);\r
- if (CompareMem (Point0, Point1, NameSize) == 0) {\r
- FoundAdded = TRUE;\r
- break;\r
- }\r
- }\r
- AddedVariable = NextAddedVariable;\r
- }\r
- if (!FoundAdded) {\r
- //\r
- // Promote VAR_IN_DELETED_TRANSITION to VAR_ADDED.\r
- //\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- CopyMem (CurrPtr, (UINT8 *) Variable, VariableSize);\r
- ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r
- CurrPtr += VariableSize;\r
- if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else if ((!IsVolatile) && ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- CommonVariableTotalSize += VariableSize;\r
- if (IsUserVariable (Variable)) {\r
- CommonUserVariableTotalSize += VariableSize;\r
- }\r
- }\r
- }\r
- }\r
-\r
- Variable = NextVariable;\r
- }\r
-\r
- //\r
- // Install the new variable if it is not NULL.\r
- //\r
- if (NewVariable != NULL) {\r
- if ((UINTN) (CurrPtr - ValidBuffer) + NewVariableSize > VariableStoreHeader->Size) {\r
- //\r
- // No enough space to store the new variable.\r
- //\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto Done;\r
- }\r
- if (!IsVolatile) {\r
- if ((NewVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- HwErrVariableTotalSize += NewVariableSize;\r
- } else if ((NewVariable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- CommonVariableTotalSize += NewVariableSize;\r
- if (IsUserVariable (NewVariable)) {\r
- CommonUserVariableTotalSize += NewVariableSize;\r
- }\r
- }\r
- if ((HwErrVariableTotalSize > PcdGet32 (PcdHwErrStorageSize)) ||\r
- (CommonVariableTotalSize > mVariableModuleGlobal->CommonVariableSpace) ||\r
- (CommonUserVariableTotalSize > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r
- //\r
- // No enough space to store the new variable by NV or NV+HR attribute.\r
- //\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto Done;\r
- }\r
- }\r
-\r
- CopyMem (CurrPtr, (UINT8 *) NewVariable, NewVariableSize);\r
- ((VARIABLE_HEADER *) CurrPtr)->State = VAR_ADDED;\r
- if (UpdatingVariable != NULL) {\r
- UpdatingPtrTrack->CurrPtr = (VARIABLE_HEADER *)((UINTN)UpdatingPtrTrack->StartPtr + ((UINTN)CurrPtr - (UINTN)GetStartPointer ((VARIABLE_STORE_HEADER *) ValidBuffer)));\r
- UpdatingPtrTrack->InDeletedTransitionPtr = NULL;\r
- }\r
- CurrPtr += NewVariableSize;\r
- }\r
- }\r
-\r
- if (IsVolatile) {\r
- //\r
- // If volatile variable store, just copy valid buffer.\r
- //\r
- SetMem ((UINT8 *) (UINTN) VariableBase, VariableStoreHeader->Size, 0xff);\r
- CopyMem ((UINT8 *) (UINTN) VariableBase, ValidBuffer, (UINTN) (CurrPtr - ValidBuffer));\r
- *LastVariableOffset = (UINTN) (CurrPtr - ValidBuffer);\r
- Status = EFI_SUCCESS;\r
- } else {\r
- //\r
- // If non-volatile variable store, perform FTW here.\r
- //\r
- Status = FtwVariableSpace (\r
- VariableBase,\r
- (VARIABLE_STORE_HEADER *) ValidBuffer\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- *LastVariableOffset = (UINTN) (CurrPtr - ValidBuffer);\r
- mVariableModuleGlobal->HwErrVariableTotalSize = HwErrVariableTotalSize;\r
- mVariableModuleGlobal->CommonVariableTotalSize = CommonVariableTotalSize;\r
- mVariableModuleGlobal->CommonUserVariableTotalSize = CommonUserVariableTotalSize;\r
- } else {\r
- Variable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableBase);\r
- while (IsValidVariableHeader (Variable, GetEndPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableBase))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r
- } else if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r
- if (IsUserVariable (Variable)) {\r
- mVariableModuleGlobal->CommonUserVariableTotalSize += VariableSize;\r
- }\r
- }\r
-\r
- Variable = NextVariable;\r
- }\r
- *LastVariableOffset = (UINTN) Variable - (UINTN) VariableBase;\r
- }\r
- }\r
-\r
-Done:\r
- if (IsVolatile) {\r
- FreePool (ValidBuffer);\r
- } else {\r
- //\r
- // For NV variable reclaim, we use mNvVariableCache as the buffer, so copy the data back.\r
- //\r
- CopyMem (mNvVariableCache, (UINT8 *)(UINTN)VariableBase, VariableStoreHeader->Size);\r
-\r
- if (NewPubKeyStore != NULL) {\r
- FreePool (NewPubKeyStore);\r
- }\r
-\r
- if (NewPubKeyIndex != NULL) {\r
- FreePool (NewPubKeyIndex);\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
- Find the variable in the specified variable store.\r
-\r
- @param[in] VariableName Name of the variable to be found\r
- @param[in] VendorGuid Vendor GUID to be found.\r
- @param[in] IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r
- check at runtime when searching variable.\r
- @param[in, out] PtrTrack Variable Track Pointer structure that contains Variable Information.\r
-\r
- @retval EFI_SUCCESS Variable found successfully\r
- @retval EFI_NOT_FOUND Variable not found\r
-**/\r
-EFI_STATUS\r
-FindVariableEx (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN BOOLEAN IgnoreRtCheck,\r
- IN OUT VARIABLE_POINTER_TRACK *PtrTrack\r
- )\r
-{\r
- VARIABLE_HEADER *InDeletedVariable;\r
- VOID *Point;\r
-\r
- PtrTrack->InDeletedTransitionPtr = NULL;\r
-\r
- //\r
- // Find the variable by walk through HOB, volatile and non-volatile variable store.\r
- //\r
- InDeletedVariable = NULL;\r
-\r
- for ( PtrTrack->CurrPtr = PtrTrack->StartPtr\r
- ; IsValidVariableHeader (PtrTrack->CurrPtr, PtrTrack->EndPtr)\r
- ; PtrTrack->CurrPtr = GetNextVariablePtr (PtrTrack->CurrPtr)\r
- ) {\r
- if (PtrTrack->CurrPtr->State == VAR_ADDED ||\r
- PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)\r
- ) {\r
- if (IgnoreRtCheck || !AtRuntime () || ((PtrTrack->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r
- if (VariableName[0] == 0) {\r
- if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- InDeletedVariable = PtrTrack->CurrPtr;\r
- } else {\r
- PtrTrack->InDeletedTransitionPtr = InDeletedVariable;\r
- return EFI_SUCCESS;\r
- }\r
- } else {\r
- if (CompareGuid (VendorGuid, &PtrTrack->CurrPtr->VendorGuid)) {\r
- Point = (VOID *) GetVariableNamePtr (PtrTrack->CurrPtr);\r
-\r
- ASSERT (NameSizeOfVariable (PtrTrack->CurrPtr) != 0);\r
- if (CompareMem (VariableName, Point, NameSizeOfVariable (PtrTrack->CurrPtr)) == 0) {\r
- if (PtrTrack->CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- InDeletedVariable = PtrTrack->CurrPtr;\r
- } else {\r
- PtrTrack->InDeletedTransitionPtr = InDeletedVariable;\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
- }\r
- }\r
- }\r
- }\r
-\r
- PtrTrack->CurrPtr = InDeletedVariable;\r
- return (PtrTrack->CurrPtr == NULL) ? EFI_NOT_FOUND : EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Finds variable in storage blocks of volatile and non-volatile storage areas.\r
-\r
- This code finds variable in storage blocks of volatile and non-volatile storage areas.\r
- If VariableName is an empty string, then we just return the first\r
- qualified variable without comparing VariableName and VendorGuid.\r
- If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check\r
- at runtime when searching existing variable, only VariableName and VendorGuid are compared.\r
- Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.\r
-\r
- @param[in] VariableName Name of the variable to be found.\r
- @param[in] VendorGuid Vendor GUID to be found.\r
- @param[out] PtrTrack VARIABLE_POINTER_TRACK structure for output,\r
- including the range searched and the target position.\r
- @param[in] Global Pointer to VARIABLE_GLOBAL structure, including\r
- base of volatile variable storage area, base of\r
- NV variable storage area, and a lock.\r
- @param[in] IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r
- check at runtime when searching variable.\r
-\r
- @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r
- VendorGuid is NULL.\r
- @retval EFI_SUCCESS Variable successfully found.\r
- @retval EFI_NOT_FOUND Variable not found\r
-\r
-**/\r
-EFI_STATUS\r
-FindVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack,\r
- IN VARIABLE_GLOBAL *Global,\r
- IN BOOLEAN IgnoreRtCheck\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r
- VARIABLE_STORE_TYPE Type;\r
-\r
- if (VariableName[0] != 0 && VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // 0: Volatile, 1: HOB, 2: Non-Volatile.\r
- // The index and attributes mapping must be kept in this order as RuntimeServiceGetNextVariableName\r
- // make use of this mapping to implement search algorithm.\r
- //\r
- VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) Global->VolatileVariableBase;\r
- VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) Global->HobVariableBase;\r
- VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r
-\r
- //\r
- // Find the variable by walk through HOB, volatile and non-volatile variable store.\r
- //\r
- for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r
- if (VariableStoreHeader[Type] == NULL) {\r
- continue;\r
- }\r
-\r
- PtrTrack->StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r
- PtrTrack->EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r
- PtrTrack->Volatile = (BOOLEAN) (Type == VariableStoreTypeVolatile);\r
-\r
- Status = FindVariableEx (VariableName, VendorGuid, IgnoreRtCheck, PtrTrack);\r
- if (!EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- }\r
- return EFI_NOT_FOUND;\r
-}\r
-\r
-/**\r
- Get index from supported language codes according to language string.\r
-\r
- This code is used to get corresponding index in supported language codes. It can handle\r
- RFC4646 and ISO639 language tags.\r
- In ISO639 language tags, take 3-characters as a delimitation to find matched string and calculate the index.\r
- In RFC4646 language tags, take semicolon as a delimitation to find matched string and calculate the index.\r
-\r
- For example:\r
- SupportedLang = "engfraengfra"\r
- Lang = "eng"\r
- Iso639Language = TRUE\r
- The return value is "0".\r
- Another example:\r
- SupportedLang = "en;fr;en-US;fr-FR"\r
- Lang = "fr-FR"\r
- Iso639Language = FALSE\r
- The return value is "3".\r
-\r
- @param SupportedLang Platform supported language codes.\r
- @param Lang Configured language.\r
- @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r
-\r
- @retval The index of language in the language codes.\r
-\r
-**/\r
-UINTN\r
-GetIndexFromSupportedLangCodes(\r
- IN CHAR8 *SupportedLang,\r
- IN CHAR8 *Lang,\r
- IN BOOLEAN Iso639Language\r
- )\r
-{\r
- UINTN Index;\r
- UINTN CompareLength;\r
- UINTN LanguageLength;\r
-\r
- if (Iso639Language) {\r
- CompareLength = ISO_639_2_ENTRY_SIZE;\r
- for (Index = 0; Index < AsciiStrLen (SupportedLang); Index += CompareLength) {\r
- if (AsciiStrnCmp (Lang, SupportedLang + Index, CompareLength) == 0) {\r
- //\r
- // Successfully find the index of Lang string in SupportedLang string.\r
- //\r
- Index = Index / CompareLength;\r
- return Index;\r
- }\r
- }\r
- ASSERT (FALSE);\r
- return 0;\r
- } else {\r
- //\r
- // Compare RFC4646 language code\r
- //\r
- Index = 0;\r
- for (LanguageLength = 0; Lang[LanguageLength] != '\0'; LanguageLength++);\r
-\r
- for (Index = 0; *SupportedLang != '\0'; Index++, SupportedLang += CompareLength) {\r
- //\r
- // Skip ';' characters in SupportedLang\r
- //\r
- for (; *SupportedLang != '\0' && *SupportedLang == ';'; SupportedLang++);\r
- //\r
- // Determine the length of the next language code in SupportedLang\r
- //\r
- for (CompareLength = 0; SupportedLang[CompareLength] != '\0' && SupportedLang[CompareLength] != ';'; CompareLength++);\r
-\r
- if ((CompareLength == LanguageLength) &&\r
- (AsciiStrnCmp (Lang, SupportedLang, CompareLength) == 0)) {\r
- //\r
- // Successfully find the index of Lang string in SupportedLang string.\r
- //\r
- return Index;\r
- }\r
- }\r
- ASSERT (FALSE);\r
- return 0;\r
- }\r
-}\r
-\r
-/**\r
- Get language string from supported language codes according to index.\r
-\r
- This code is used to get corresponding language strings in supported language codes. It can handle\r
- RFC4646 and ISO639 language tags.\r
- In ISO639 language tags, take 3-characters as a delimitation. Find language string according to the index.\r
- In RFC4646 language tags, take semicolon as a delimitation. Find language string according to the index.\r
-\r
- For example:\r
- SupportedLang = "engfraengfra"\r
- Index = "1"\r
- Iso639Language = TRUE\r
- The return value is "fra".\r
- Another example:\r
- SupportedLang = "en;fr;en-US;fr-FR"\r
- Index = "1"\r
- Iso639Language = FALSE\r
- The return value is "fr".\r
-\r
- @param SupportedLang Platform supported language codes.\r
- @param Index The index in supported language codes.\r
- @param Iso639Language A bool value to signify if the handler is operated on ISO639 or RFC4646.\r
-\r
- @retval The language string in the language codes.\r
-\r
-**/\r
-CHAR8 *\r
-GetLangFromSupportedLangCodes (\r
- IN CHAR8 *SupportedLang,\r
- IN UINTN Index,\r
- IN BOOLEAN Iso639Language\r
-)\r
-{\r
- UINTN SubIndex;\r
- UINTN CompareLength;\r
- CHAR8 *Supported;\r
-\r
- SubIndex = 0;\r
- Supported = SupportedLang;\r
- if (Iso639Language) {\r
- //\r
- // According to the index of Lang string in SupportedLang string to get the language.\r
- // This code will be invoked in RUNTIME, therefore there is not a memory allocate/free operation.\r
- // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r
- //\r
- CompareLength = ISO_639_2_ENTRY_SIZE;\r
- mVariableModuleGlobal->Lang[CompareLength] = '\0';\r
- return CopyMem (mVariableModuleGlobal->Lang, SupportedLang + Index * CompareLength, CompareLength);\r
-\r
- } else {\r
- while (TRUE) {\r
- //\r
- // Take semicolon as delimitation, sequentially traverse supported language codes.\r
- //\r
- for (CompareLength = 0; *Supported != ';' && *Supported != '\0'; CompareLength++) {\r
- Supported++;\r
- }\r
- if ((*Supported == '\0') && (SubIndex != Index)) {\r
- //\r
- // Have completed the traverse, but not find corrsponding string.\r
- // This case is not allowed to happen.\r
- //\r
- ASSERT(FALSE);\r
- return NULL;\r
- }\r
- if (SubIndex == Index) {\r
- //\r
- // According to the index of Lang string in SupportedLang string to get the language.\r
- // As this code will be invoked in RUNTIME, therefore there is not memory allocate/free operation.\r
- // In driver entry, it pre-allocates a runtime attribute memory to accommodate this string.\r
- //\r
- mVariableModuleGlobal->PlatformLang[CompareLength] = '\0';\r
- return CopyMem (mVariableModuleGlobal->PlatformLang, Supported - CompareLength, CompareLength);\r
- }\r
- SubIndex++;\r
-\r
- //\r
- // Skip ';' characters in Supported\r
- //\r
- for (; *Supported != '\0' && *Supported == ';'; Supported++);\r
- }\r
- }\r
-}\r
-\r
-/**\r
- Returns a pointer to an allocated buffer that contains the best matching language\r
- from a set of supported languages.\r
-\r
- This function supports both ISO 639-2 and RFC 4646 language codes, but language\r
- code types may not be mixed in a single call to this function. This function\r
- supports a variable argument list that allows the caller to pass in a prioritized\r
- list of language codes to test against all the language codes in SupportedLanguages.\r
-\r
- If SupportedLanguages is NULL, then ASSERT().\r
-\r
- @param[in] SupportedLanguages A pointer to a Null-terminated ASCII string that\r
- contains a set of language codes in the format\r
- specified by Iso639Language.\r
- @param[in] Iso639Language If TRUE, then all language codes are assumed to be\r
- in ISO 639-2 format. If FALSE, then all language\r
- codes are assumed to be in RFC 4646 language format\r
- @param[in] ... A variable argument list that contains pointers to\r
- Null-terminated ASCII strings that contain one or more\r
- language codes in the format specified by Iso639Language.\r
- The first language code from each of these language\r
- code lists is used to determine if it is an exact or\r
- close match to any of the language codes in\r
- SupportedLanguages. Close matches only apply to RFC 4646\r
- language codes, and the matching algorithm from RFC 4647\r
- is used to determine if a close match is present. If\r
- an exact or close match is found, then the matching\r
- language code from SupportedLanguages is returned. If\r
- no matches are found, then the next variable argument\r
- parameter is evaluated. The variable argument list\r
- is terminated by a NULL.\r
-\r
- @retval NULL The best matching language could not be found in SupportedLanguages.\r
- @retval NULL There are not enough resources available to return the best matching\r
- language.\r
- @retval Other A pointer to a Null-terminated ASCII string that is the best matching\r
- language in SupportedLanguages.\r
-\r
-**/\r
-CHAR8 *\r
-EFIAPI\r
-VariableGetBestLanguage (\r
- IN CONST CHAR8 *SupportedLanguages,\r
- IN BOOLEAN Iso639Language,\r
- ...\r
- )\r
-{\r
- VA_LIST Args;\r
- CHAR8 *Language;\r
- UINTN CompareLength;\r
- UINTN LanguageLength;\r
- CONST CHAR8 *Supported;\r
- CHAR8 *Buffer;\r
-\r
- if (SupportedLanguages == NULL) {\r
- return NULL;\r
- }\r
-\r
- VA_START (Args, Iso639Language);\r
- while ((Language = VA_ARG (Args, CHAR8 *)) != NULL) {\r
- //\r
- // Default to ISO 639-2 mode\r
- //\r
- CompareLength = 3;\r
- LanguageLength = MIN (3, AsciiStrLen (Language));\r
-\r
- //\r
- // If in RFC 4646 mode, then determine the length of the first RFC 4646 language code in Language\r
- //\r
- if (!Iso639Language) {\r
- for (LanguageLength = 0; Language[LanguageLength] != 0 && Language[LanguageLength] != ';'; LanguageLength++);\r
- }\r
-\r
- //\r
- // Trim back the length of Language used until it is empty\r
- //\r
- while (LanguageLength > 0) {\r
- //\r
- // Loop through all language codes in SupportedLanguages\r
- //\r
- for (Supported = SupportedLanguages; *Supported != '\0'; Supported += CompareLength) {\r
- //\r
- // In RFC 4646 mode, then Loop through all language codes in SupportedLanguages\r
- //\r
- if (!Iso639Language) {\r
- //\r
- // Skip ';' characters in Supported\r
- //\r
- for (; *Supported != '\0' && *Supported == ';'; Supported++);\r
- //\r
- // Determine the length of the next language code in Supported\r
- //\r
- for (CompareLength = 0; Supported[CompareLength] != 0 && Supported[CompareLength] != ';'; CompareLength++);\r
- //\r
- // If Language is longer than the Supported, then skip to the next language\r
- //\r
- if (LanguageLength > CompareLength) {\r
- continue;\r
- }\r
- }\r
- //\r
- // See if the first LanguageLength characters in Supported match Language\r
- //\r
- if (AsciiStrnCmp (Supported, Language, LanguageLength) == 0) {\r
- VA_END (Args);\r
-\r
- Buffer = Iso639Language ? mVariableModuleGlobal->Lang : mVariableModuleGlobal->PlatformLang;\r
- Buffer[CompareLength] = '\0';\r
- return CopyMem (Buffer, Supported, CompareLength);\r
- }\r
- }\r
-\r
- if (Iso639Language) {\r
- //\r
- // If ISO 639 mode, then each language can only be tested once\r
- //\r
- LanguageLength = 0;\r
- } else {\r
- //\r
- // If RFC 4646 mode, then trim Language from the right to the next '-' character\r
- //\r
- for (LanguageLength--; LanguageLength > 0 && Language[LanguageLength] != '-'; LanguageLength--);\r
- }\r
- }\r
- }\r
- VA_END (Args);\r
-\r
- //\r
- // No matches were found\r
- //\r
- return NULL;\r
-}\r
-\r
-/**\r
- This function is to check if the remaining variable space is enough to set\r
- all Variables from argument list successfully. The purpose of the check\r
- is to keep the consistency of the Variables to be in variable storage.\r
-\r
- Note: Variables are assumed to be in same storage.\r
- The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r
- so follow the argument sequence to check the Variables.\r
-\r
- @param[in] Attributes Variable attributes for Variable entries.\r
- @param ... The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r
- A NULL terminates the list. The VariableSize of\r
- VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r
- It will be changed to variable total size as output.\r
-\r
- @retval TRUE Have enough variable space to set the Variables successfully.\r
- @retval FALSE No enough variable space to set the Variables successfully.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-CheckRemainingSpaceForConsistency (\r
- IN UINT32 Attributes,\r
- ...\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VA_LIST Args;\r
- VARIABLE_ENTRY_CONSISTENCY *VariableEntry;\r
- UINT64 MaximumVariableStorageSize;\r
- UINT64 RemainingVariableStorageSize;\r
- UINT64 MaximumVariableSize;\r
- UINTN TotalNeededSize;\r
- UINTN OriginalVarSize;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- VARIABLE_POINTER_TRACK VariablePtrTrack;\r
- VARIABLE_HEADER *NextVariable;\r
- UINTN VarNameSize;\r
- UINTN VarDataSize;\r
-\r
- //\r
- // Non-Volatile related.\r
- //\r
- VariableStoreHeader = mNvVariableCache;\r
-\r
- Status = VariableServiceQueryVariableInfoInternal (\r
- Attributes,\r
- &MaximumVariableStorageSize,\r
- &RemainingVariableStorageSize,\r
- &MaximumVariableSize\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- TotalNeededSize = 0;\r
- VA_START (Args, Attributes);\r
- VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r
- while (VariableEntry != NULL) {\r
- //\r
- // Calculate variable total size.\r
- //\r
- VarNameSize = StrSize (VariableEntry->Name);\r
- VarNameSize += GET_PAD_SIZE (VarNameSize);\r
- VarDataSize = VariableEntry->VariableSize;\r
- VarDataSize += GET_PAD_SIZE (VarDataSize);\r
- VariableEntry->VariableSize = HEADER_ALIGN (sizeof (VARIABLE_HEADER) + VarNameSize + VarDataSize);\r
-\r
- TotalNeededSize += VariableEntry->VariableSize;\r
- VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r
- }\r
- VA_END (Args);\r
-\r
- if (RemainingVariableStorageSize >= TotalNeededSize) {\r
- //\r
- // Already have enough space.\r
- //\r
- return TRUE;\r
- } else if (AtRuntime ()) {\r
- //\r
- // At runtime, no reclaim.\r
- // The original variable space of Variables can't be reused.\r
- //\r
- return FALSE;\r
- }\r
-\r
- VA_START (Args, Attributes);\r
- VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r
- while (VariableEntry != NULL) {\r
- //\r
- // Check if Variable[Index] has been present and get its size.\r
- //\r
- OriginalVarSize = 0;\r
- VariablePtrTrack.StartPtr = GetStartPointer (VariableStoreHeader);\r
- VariablePtrTrack.EndPtr = GetEndPointer (VariableStoreHeader);\r
- Status = FindVariableEx (\r
- VariableEntry->Name,\r
- VariableEntry->Guid,\r
- FALSE,\r
- &VariablePtrTrack\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Get size of Variable[Index].\r
- //\r
- NextVariable = GetNextVariablePtr (VariablePtrTrack.CurrPtr);\r
- OriginalVarSize = (UINTN) NextVariable - (UINTN) VariablePtrTrack.CurrPtr;\r
- //\r
- // Add the original size of Variable[Index] to remaining variable storage size.\r
- //\r
- RemainingVariableStorageSize += OriginalVarSize;\r
- }\r
- if (VariableEntry->VariableSize > RemainingVariableStorageSize) {\r
- //\r
- // No enough space for Variable[Index].\r
- //\r
- VA_END (Args);\r
- return FALSE;\r
- }\r
- //\r
- // Sub the (new) size of Variable[Index] from remaining variable storage size.\r
- //\r
- RemainingVariableStorageSize -= VariableEntry->VariableSize;\r
- VariableEntry = VA_ARG (Args, VARIABLE_ENTRY_CONSISTENCY *);\r
- }\r
- VA_END (Args);\r
-\r
- return TRUE;\r
-}\r
-\r
-/**\r
- Hook the operations in PlatformLangCodes, LangCodes, PlatformLang and Lang.\r
-\r
- When setting Lang/LangCodes, simultaneously update PlatformLang/PlatformLangCodes.\r
-\r
- According to UEFI spec, PlatformLangCodes/LangCodes are only set once in firmware initialization,\r
- and are read-only. Therefore, in variable driver, only store the original value for other use.\r
-\r
- @param[in] VariableName Name of variable.\r
-\r
- @param[in] Data Variable data.\r
-\r
- @param[in] DataSize Size of data. 0 means delete.\r
-\r
- @retval EFI_SUCCESS The update operation is successful or ignored.\r
- @retval EFI_WRITE_PROTECTED Update PlatformLangCodes/LangCodes at runtime.\r
- @retval EFI_OUT_OF_RESOURCES No enough variable space to do the update operation.\r
- @retval Others Other errors happened during the update operation.\r
-\r
-**/\r
-EFI_STATUS\r
-AutoUpdateLangVariable (\r
- IN CHAR16 *VariableName,\r
- IN VOID *Data,\r
- IN UINTN DataSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- CHAR8 *BestPlatformLang;\r
- CHAR8 *BestLang;\r
- UINTN Index;\r
- UINT32 Attributes;\r
- VARIABLE_POINTER_TRACK Variable;\r
- BOOLEAN SetLanguageCodes;\r
- VARIABLE_ENTRY_CONSISTENCY VariableEntry[2];\r
-\r
- //\r
- // Don't do updates for delete operation\r
- //\r
- if (DataSize == 0) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- SetLanguageCodes = FALSE;\r
-\r
- if (StrCmp (VariableName, EFI_PLATFORM_LANG_CODES_VARIABLE_NAME) == 0) {\r
- //\r
- // PlatformLangCodes is a volatile variable, so it can not be updated at runtime.\r
- //\r
- if (AtRuntime ()) {\r
- return EFI_WRITE_PROTECTED;\r
- }\r
-\r
- SetLanguageCodes = TRUE;\r
-\r
- //\r
- // According to UEFI spec, PlatformLangCodes is only set once in firmware initialization, and is read-only\r
- // Therefore, in variable driver, only store the original value for other use.\r
- //\r
- if (mVariableModuleGlobal->PlatformLangCodes != NULL) {\r
- FreePool (mVariableModuleGlobal->PlatformLangCodes);\r
- }\r
- mVariableModuleGlobal->PlatformLangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r
- ASSERT (mVariableModuleGlobal->PlatformLangCodes != NULL);\r
-\r
- //\r
- // PlatformLang holds a single language from PlatformLangCodes,\r
- // so the size of PlatformLangCodes is enough for the PlatformLang.\r
- //\r
- if (mVariableModuleGlobal->PlatformLang != NULL) {\r
- FreePool (mVariableModuleGlobal->PlatformLang);\r
- }\r
- mVariableModuleGlobal->PlatformLang = AllocateRuntimePool (DataSize);\r
- ASSERT (mVariableModuleGlobal->PlatformLang != NULL);\r
-\r
- } else if (StrCmp (VariableName, EFI_LANG_CODES_VARIABLE_NAME) == 0) {\r
- //\r
- // LangCodes is a volatile variable, so it can not be updated at runtime.\r
- //\r
- if (AtRuntime ()) {\r
- return EFI_WRITE_PROTECTED;\r
- }\r
-\r
- SetLanguageCodes = TRUE;\r
-\r
- //\r
- // According to UEFI spec, LangCodes is only set once in firmware initialization, and is read-only\r
- // Therefore, in variable driver, only store the original value for other use.\r
- //\r
- if (mVariableModuleGlobal->LangCodes != NULL) {\r
- FreePool (mVariableModuleGlobal->LangCodes);\r
- }\r
- mVariableModuleGlobal->LangCodes = AllocateRuntimeCopyPool (DataSize, Data);\r
- ASSERT (mVariableModuleGlobal->LangCodes != NULL);\r
- }\r
-\r
- if (SetLanguageCodes\r
- && (mVariableModuleGlobal->PlatformLangCodes != NULL)\r
- && (mVariableModuleGlobal->LangCodes != NULL)) {\r
- //\r
- // Update Lang if PlatformLang is already set\r
- // Update PlatformLang if Lang is already set\r
- //\r
- Status = FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Update Lang\r
- //\r
- VariableName = EFI_PLATFORM_LANG_VARIABLE_NAME;\r
- Data = GetVariableDataPtr (Variable.CurrPtr);\r
- DataSize = Variable.CurrPtr->DataSize;\r
- } else {\r
- Status = FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // Update PlatformLang\r
- //\r
- VariableName = EFI_LANG_VARIABLE_NAME;\r
- Data = GetVariableDataPtr (Variable.CurrPtr);\r
- DataSize = Variable.CurrPtr->DataSize;\r
- } else {\r
- //\r
- // Neither PlatformLang nor Lang is set, directly return\r
- //\r
- return EFI_SUCCESS;\r
- }\r
- }\r
- }\r
-\r
- Status = EFI_SUCCESS;\r
-\r
- //\r
- // According to UEFI spec, "Lang" and "PlatformLang" is NV|BS|RT attributions.\r
- //\r
- Attributes = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS;\r
-\r
- if (StrCmp (VariableName, EFI_PLATFORM_LANG_VARIABLE_NAME) == 0) {\r
- //\r
- // Update Lang when PlatformLangCodes/LangCodes were set.\r
- //\r
- if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r
- //\r
- // When setting PlatformLang, firstly get most matched language string from supported language codes.\r
- //\r
- BestPlatformLang = VariableGetBestLanguage (mVariableModuleGlobal->PlatformLangCodes, FALSE, Data, NULL);\r
- if (BestPlatformLang != NULL) {\r
- //\r
- // Get the corresponding index in language codes.\r
- //\r
- Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, BestPlatformLang, FALSE);\r
-\r
- //\r
- // Get the corresponding ISO639 language tag according to RFC4646 language tag.\r
- //\r
- BestLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, Index, TRUE);\r
-\r
- //\r
- // Check the variable space for both Lang and PlatformLang variable.\r
- //\r
- VariableEntry[0].VariableSize = ISO_639_2_ENTRY_SIZE + 1;\r
- VariableEntry[0].Guid = &gEfiGlobalVariableGuid;\r
- VariableEntry[0].Name = EFI_LANG_VARIABLE_NAME;\r
-\r
- VariableEntry[1].VariableSize = AsciiStrSize (BestPlatformLang);\r
- VariableEntry[1].Guid = &gEfiGlobalVariableGuid;\r
- VariableEntry[1].Name = EFI_PLATFORM_LANG_VARIABLE_NAME;\r
- if (!CheckRemainingSpaceForConsistency (VARIABLE_ATTRIBUTE_NV_BS_RT, &VariableEntry[0], &VariableEntry[1], NULL)) {\r
- //\r
- // No enough variable space to set both Lang and PlatformLang successfully.\r
- //\r
- Status = EFI_OUT_OF_RESOURCES;\r
- } else {\r
- //\r
- // Successfully convert PlatformLang to Lang, and set the BestLang value into Lang variable simultaneously.\r
- //\r
- FindVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
-\r
- Status = UpdateVariable (EFI_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestLang,\r
- ISO_639_2_ENTRY_SIZE + 1, Attributes, 0, 0, &Variable, NULL);\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "Variable Driver Auto Update PlatformLang, PlatformLang:%a, Lang:%a Status: %r\n", BestPlatformLang, BestLang, Status));\r
- }\r
- }\r
-\r
- } else if (StrCmp (VariableName, EFI_LANG_VARIABLE_NAME) == 0) {\r
- //\r
- // Update PlatformLang when PlatformLangCodes/LangCodes were set.\r
- //\r
- if ((mVariableModuleGlobal->PlatformLangCodes != NULL) && (mVariableModuleGlobal->LangCodes != NULL)) {\r
- //\r
- // When setting Lang, firstly get most matched language string from supported language codes.\r
- //\r
- BestLang = VariableGetBestLanguage (mVariableModuleGlobal->LangCodes, TRUE, Data, NULL);\r
- if (BestLang != NULL) {\r
- //\r
- // Get the corresponding index in language codes.\r
- //\r
- Index = GetIndexFromSupportedLangCodes (mVariableModuleGlobal->LangCodes, BestLang, TRUE);\r
-\r
- //\r
- // Get the corresponding RFC4646 language tag according to ISO639 language tag.\r
- //\r
- BestPlatformLang = GetLangFromSupportedLangCodes (mVariableModuleGlobal->PlatformLangCodes, Index, FALSE);\r
-\r
- //\r
- // Check the variable space for both PlatformLang and Lang variable.\r
- //\r
- VariableEntry[0].VariableSize = AsciiStrSize (BestPlatformLang);\r
- VariableEntry[0].Guid = &gEfiGlobalVariableGuid;\r
- VariableEntry[0].Name = EFI_PLATFORM_LANG_VARIABLE_NAME;\r
-\r
- VariableEntry[1].VariableSize = ISO_639_2_ENTRY_SIZE + 1;\r
- VariableEntry[1].Guid = &gEfiGlobalVariableGuid;\r
- VariableEntry[1].Name = EFI_LANG_VARIABLE_NAME;\r
- if (!CheckRemainingSpaceForConsistency (VARIABLE_ATTRIBUTE_NV_BS_RT, &VariableEntry[0], &VariableEntry[1], NULL)) {\r
- //\r
- // No enough variable space to set both PlatformLang and Lang successfully.\r
- //\r
- Status = EFI_OUT_OF_RESOURCES;\r
- } else {\r
- //\r
- // Successfully convert Lang to PlatformLang, and set the BestPlatformLang value into PlatformLang variable simultaneously.\r
- //\r
- FindVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
-\r
- Status = UpdateVariable (EFI_PLATFORM_LANG_VARIABLE_NAME, &gEfiGlobalVariableGuid, BestPlatformLang,\r
- AsciiStrSize (BestPlatformLang), Attributes, 0, 0, &Variable, NULL);\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "Variable Driver Auto Update Lang, Lang:%a, PlatformLang:%a Status: %r\n", BestLang, BestPlatformLang, Status));\r
- }\r
- }\r
- }\r
-\r
- if (SetLanguageCodes) {\r
- //\r
- // Continue to set PlatformLangCodes or LangCodes.\r
- //\r
- return EFI_SUCCESS;\r
- } else {\r
- return Status;\r
- }\r
-}\r
-\r
-/**\r
- Update the variable region with Variable information. If EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS is set,\r
- index of associated public key is needed.\r
-\r
- @param[in] VariableName Name of variable.\r
- @param[in] VendorGuid Guid of variable.\r
- @param[in] Data Variable data.\r
- @param[in] DataSize Size of data. 0 means delete.\r
- @param[in] Attributes Attributes of the variable.\r
- @param[in] KeyIndex Index of associated public key.\r
- @param[in] MonotonicCount Value of associated monotonic count.\r
- @param[in, out] CacheVariable The variable information which is used to keep track of variable usage.\r
- @param[in] TimeStamp Value of associated TimeStamp.\r
-\r
- @retval EFI_SUCCESS The update operation is success.\r
- @retval EFI_OUT_OF_RESOURCES Variable region is full, can not write other data into this region.\r
-\r
-**/\r
-EFI_STATUS\r
-UpdateVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN UINT32 Attributes OPTIONAL,\r
- IN UINT32 KeyIndex OPTIONAL,\r
- IN UINT64 MonotonicCount OPTIONAL,\r
- IN OUT VARIABLE_POINTER_TRACK *CacheVariable,\r
- IN EFI_TIME *TimeStamp OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_HEADER *NextVariable;\r
- UINTN ScratchSize;\r
- UINTN MaxDataSize;\r
- UINTN VarNameOffset;\r
- UINTN VarDataOffset;\r
- UINTN VarNameSize;\r
- UINTN VarSize;\r
- BOOLEAN Volatile;\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
- UINT8 State;\r
- VARIABLE_POINTER_TRACK *Variable;\r
- VARIABLE_POINTER_TRACK NvVariable;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- UINTN CacheOffset;\r
- UINT8 *BufferForMerge;\r
- UINTN MergedBufSize;\r
- BOOLEAN DataReady;\r
- UINTN DataOffset;\r
- BOOLEAN IsCommonVariable;\r
- BOOLEAN IsCommonUserVariable;\r
-\r
- if (mVariableModuleGlobal->FvbInstance == NULL) {\r
- //\r
- // The FVB protocol is not installed, so the EFI_VARIABLE_WRITE_ARCH_PROTOCOL is not installed.\r
- //\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
- //\r
- // Trying to update NV variable prior to the installation of EFI_VARIABLE_WRITE_ARCH_PROTOCOL\r
- //\r
- return EFI_NOT_AVAILABLE_YET;\r
- } else if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r
- //\r
- // Trying to update volatile authenticated variable prior to the installation of EFI_VARIABLE_WRITE_ARCH_PROTOCOL\r
- // The authenticated variable perhaps is not initialized, just return here.\r
- //\r
- return EFI_NOT_AVAILABLE_YET;\r
- }\r
- }\r
-\r
- if ((CacheVariable->CurrPtr == NULL) || CacheVariable->Volatile) {\r
- Variable = CacheVariable;\r
- } else {\r
- //\r
- // Update/Delete existing NV variable.\r
- // CacheVariable points to the variable in the memory copy of Flash area\r
- // Now let Variable points to the same variable in Flash area.\r
- //\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
- Variable = &NvVariable;\r
- Variable->StartPtr = GetStartPointer (VariableStoreHeader);\r
- Variable->EndPtr = GetEndPointer (VariableStoreHeader);\r
- Variable->CurrPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->CurrPtr - (UINTN)CacheVariable->StartPtr));\r
- if (CacheVariable->InDeletedTransitionPtr != NULL) {\r
- Variable->InDeletedTransitionPtr = (VARIABLE_HEADER *)((UINTN)Variable->StartPtr + ((UINTN)CacheVariable->InDeletedTransitionPtr - (UINTN)CacheVariable->StartPtr));\r
- } else {\r
- Variable->InDeletedTransitionPtr = NULL;\r
- }\r
- Variable->Volatile = FALSE;\r
- }\r
-\r
- Fvb = mVariableModuleGlobal->FvbInstance;\r
-\r
- //\r
- // Tricky part: Use scratch data area at the end of volatile variable store\r
- // as a temporary storage.\r
- //\r
- NextVariable = GetEndPointer ((VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase));\r
- ScratchSize = mVariableModuleGlobal->ScratchBufferSize;\r
- SetMem (NextVariable, ScratchSize, 0xff);\r
- DataReady = FALSE;\r
-\r
- if (Variable->CurrPtr != NULL) {\r
- //\r
- // Update/Delete existing variable.\r
- //\r
- if (AtRuntime ()) {\r
- //\r
- // If AtRuntime and the variable is Volatile and Runtime Access,\r
- // the volatile is ReadOnly, and SetVariable should be aborted and\r
- // return EFI_WRITE_PROTECTED.\r
- //\r
- if (Variable->Volatile) {\r
- Status = EFI_WRITE_PROTECTED;\r
- goto Done;\r
- }\r
- //\r
- // Only variable that have NV attributes can be updated/deleted in Runtime.\r
- //\r
- if ((Variable->CurrPtr->Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
-\r
- //\r
- // Only variable that have RT attributes can be updated/deleted in Runtime.\r
- //\r
- if ((Variable->CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
- }\r
-\r
- //\r
- // Setting a data variable with no access, or zero DataSize attributes\r
- // causes it to be deleted.\r
- // When the EFI_VARIABLE_APPEND_WRITE attribute is set, DataSize of zero will\r
- // not delete the variable.\r
- //\r
- if ((((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) && (DataSize == 0))|| ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0)) {\r
- if (Variable->InDeletedTransitionPtr != NULL) {\r
- //\r
- // Both ADDED and IN_DELETED_TRANSITION variable are present,\r
- // set IN_DELETED_TRANSITION one to DELETED state first.\r
- //\r
- State = Variable->InDeletedTransitionPtr->State;\r
- State &= VAR_DELETED;\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- Variable->Volatile,\r
- FALSE,\r
- Fvb,\r
- (UINTN) &Variable->InDeletedTransitionPtr->State,\r
- sizeof (UINT8),\r
- &State\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- if (!Variable->Volatile) {\r
- ASSERT (CacheVariable->InDeletedTransitionPtr != NULL);\r
- CacheVariable->InDeletedTransitionPtr->State = State;\r
- }\r
- } else {\r
- goto Done;\r
- }\r
- }\r
-\r
- State = Variable->CurrPtr->State;\r
- State &= VAR_DELETED;\r
-\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- Variable->Volatile,\r
- FALSE,\r
- Fvb,\r
- (UINTN) &Variable->CurrPtr->State,\r
- sizeof (UINT8),\r
- &State\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, FALSE, TRUE, FALSE);\r
- if (!Variable->Volatile) {\r
- CacheVariable->CurrPtr->State = State;\r
- FlushHobVariableToFlash (VariableName, VendorGuid);\r
- }\r
- }\r
- goto Done;\r
- }\r
- //\r
- // If the variable is marked valid, and the same data has been passed in,\r
- // then return to the caller immediately.\r
- //\r
- if (DataSizeOfVariable (Variable->CurrPtr) == DataSize &&\r
- (CompareMem (Data, GetVariableDataPtr (Variable->CurrPtr), DataSize) == 0) &&\r
- ((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) &&\r
- (TimeStamp == NULL)) {\r
- //\r
- // Variable content unchanged and no need to update timestamp, just return.\r
- //\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- } else if ((Variable->CurrPtr->State == VAR_ADDED) ||\r
- (Variable->CurrPtr->State == (VAR_ADDED & VAR_IN_DELETED_TRANSITION))) {\r
-\r
- //\r
- // EFI_VARIABLE_APPEND_WRITE attribute only effects for existing variable\r
- //\r
- if ((Attributes & EFI_VARIABLE_APPEND_WRITE) != 0) {\r
- //\r
- // NOTE: From 0 to DataOffset of NextVariable is reserved for Variable Header and Name.\r
- // From DataOffset of NextVariable is to save the existing variable data.\r
- //\r
- DataOffset = sizeof (VARIABLE_HEADER) + Variable->CurrPtr->NameSize + GET_PAD_SIZE (Variable->CurrPtr->NameSize);\r
- BufferForMerge = (UINT8 *) ((UINTN) NextVariable + DataOffset);\r
- CopyMem (BufferForMerge, (UINT8 *) ((UINTN) Variable->CurrPtr + DataOffset), Variable->CurrPtr->DataSize);\r
-\r
- //\r
- // Set Max Common/Auth Variable Data Size as default MaxDataSize\r
- //\r
- if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r
- MaxDataSize = mVariableModuleGlobal->MaxAuthVariableSize - DataOffset;\r
- } else {\r
- MaxDataSize = mVariableModuleGlobal->MaxVariableSize - DataOffset;\r
- }\r
-\r
- if ((CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid) &&\r
- ((StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE) == 0) || (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE1) == 0) ||\r
- (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE2) == 0))) ||\r
- (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_KEY_EXCHANGE_KEY_NAME) == 0))) {\r
- //\r
- // For variables with formatted as EFI_SIGNATURE_LIST, the driver shall not perform an append of\r
- // EFI_SIGNATURE_DATA values that are already part of the existing variable value.\r
- //\r
- Status = AppendSignatureList (\r
- BufferForMerge,\r
- Variable->CurrPtr->DataSize,\r
- MaxDataSize - Variable->CurrPtr->DataSize,\r
- Data,\r
- DataSize,\r
- &MergedBufSize\r
- );\r
- if (Status == EFI_BUFFER_TOO_SMALL) {\r
- //\r
- // Signature List is too long, Failed to Append.\r
- //\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
-\r
- if (MergedBufSize == Variable->CurrPtr->DataSize) {\r
- if ((TimeStamp == NULL) || CompareTimeStamp (TimeStamp, &Variable->CurrPtr->TimeStamp)) {\r
- //\r
- // New EFI_SIGNATURE_DATA is not found and timestamp is not later\r
- // than current timestamp, return EFI_SUCCESS directly.\r
- //\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable->Volatile, FALSE, TRUE, FALSE, FALSE);\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- }\r
- }\r
- } else {\r
- //\r
- // For other Variables, append the new data to the end of existing data.\r
- // Max Harware error record variable data size is different from common/auth variable\r
- //\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- MaxDataSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - DataOffset;\r
- }\r
-\r
- if (Variable->CurrPtr->DataSize + DataSize > MaxDataSize) {\r
- //\r
- // Existing data size + new data size exceed maximum variable size limitation.\r
- //\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
- CopyMem ((UINT8*) ((UINTN) BufferForMerge + Variable->CurrPtr->DataSize), Data, DataSize);\r
- MergedBufSize = Variable->CurrPtr->DataSize + DataSize;\r
- }\r
-\r
- //\r
- // BufferForMerge(from DataOffset of NextVariable) has included the merged existing and new data.\r
- //\r
- Data = BufferForMerge;\r
- DataSize = MergedBufSize;\r
- DataReady = TRUE;\r
- }\r
-\r
- //\r
- // Mark the old variable as in delete transition.\r
- //\r
- State = Variable->CurrPtr->State;\r
- State &= VAR_IN_DELETED_TRANSITION;\r
-\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- Variable->Volatile,\r
- FALSE,\r
- Fvb,\r
- (UINTN) &Variable->CurrPtr->State,\r
- sizeof (UINT8),\r
- &State\r
- );\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- if (!Variable->Volatile) {\r
- CacheVariable->CurrPtr->State = State;\r
- }\r
- }\r
- } else {\r
- //\r
- // Not found existing variable. Create a new variable.\r
- //\r
-\r
- if ((DataSize == 0) && ((Attributes & EFI_VARIABLE_APPEND_WRITE) != 0)) {\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- }\r
-\r
- //\r
- // Make sure we are trying to create a new variable.\r
- // Setting a data variable with zero DataSize or no access attributes means to delete it.\r
- //\r
- if (DataSize == 0 || (Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == 0) {\r
- Status = EFI_NOT_FOUND;\r
- goto Done;\r
- }\r
-\r
- //\r
- // Only variable have NV|RT attribute can be created in Runtime.\r
- //\r
- if (AtRuntime () &&\r
- (((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) || ((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0))) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
- }\r
-\r
- //\r
- // Function part - create a new variable and copy the data.\r
- // Both update a variable and create a variable will come here.\r
- //\r
- NextVariable->StartId = VARIABLE_DATA;\r
- //\r
- // NextVariable->State = VAR_ADDED;\r
- //\r
- NextVariable->Reserved = 0;\r
- NextVariable->PubKeyIndex = KeyIndex;\r
- NextVariable->MonotonicCount = MonotonicCount;\r
- ZeroMem (&NextVariable->TimeStamp, sizeof (EFI_TIME));\r
-\r
- if (((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) != 0) &&\r
- (TimeStamp != NULL)) {\r
- if ((Attributes & EFI_VARIABLE_APPEND_WRITE) == 0) {\r
- CopyMem (&NextVariable->TimeStamp, TimeStamp, sizeof (EFI_TIME));\r
- } else {\r
- //\r
- // In the case when the EFI_VARIABLE_APPEND_WRITE attribute is set, only\r
- // when the new TimeStamp value is later than the current timestamp associated\r
- // with the variable, we need associate the new timestamp with the updated value.\r
- //\r
- if (Variable->CurrPtr != NULL) {\r
- if (CompareTimeStamp (&Variable->CurrPtr->TimeStamp, TimeStamp)) {\r
- CopyMem (&NextVariable->TimeStamp, TimeStamp, sizeof (EFI_TIME));\r
- }\r
- }\r
- }\r
- }\r
-\r
- //\r
- // The EFI_VARIABLE_APPEND_WRITE attribute will never be set in the returned\r
- // Attributes bitmask parameter of a GetVariable() call.\r
- //\r
- NextVariable->Attributes = Attributes & (~EFI_VARIABLE_APPEND_WRITE);\r
-\r
- VarNameOffset = sizeof (VARIABLE_HEADER);\r
- VarNameSize = StrSize (VariableName);\r
- CopyMem (\r
- (UINT8 *) ((UINTN) NextVariable + VarNameOffset),\r
- VariableName,\r
- VarNameSize\r
- );\r
- VarDataOffset = VarNameOffset + VarNameSize + GET_PAD_SIZE (VarNameSize);\r
-\r
- //\r
- // If DataReady is TRUE, it means the variable data has been saved into\r
- // NextVariable during EFI_VARIABLE_APPEND_WRITE operation preparation.\r
- //\r
- if (!DataReady) {\r
- CopyMem (\r
- (UINT8 *) ((UINTN) NextVariable + VarDataOffset),\r
- Data,\r
- DataSize\r
- );\r
- }\r
-\r
- CopyMem (&NextVariable->VendorGuid, VendorGuid, sizeof (EFI_GUID));\r
- //\r
- // There will be pad bytes after Data, the NextVariable->NameSize and\r
- // NextVariable->DataSize should not include pad size so that variable\r
- // service can get actual size in GetVariable.\r
- //\r
- NextVariable->NameSize = (UINT32)VarNameSize;\r
- NextVariable->DataSize = (UINT32)DataSize;\r
-\r
- //\r
- // The actual size of the variable that stores in storage should\r
- // include pad size.\r
- //\r
- VarSize = VarDataOffset + DataSize + GET_PAD_SIZE (DataSize);\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
- //\r
- // Create a nonvolatile variable.\r
- //\r
- Volatile = FALSE;\r
-\r
- IsCommonVariable = FALSE;\r
- IsCommonUserVariable = FALSE;\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == 0) {\r
- IsCommonVariable = TRUE;\r
- IsCommonUserVariable = IsUserVariable (NextVariable);\r
- }\r
- if ((((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0)\r
- && ((VarSize + mVariableModuleGlobal->HwErrVariableTotalSize) > PcdGet32 (PcdHwErrStorageSize)))\r
- || (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonVariableSpace))\r
- || (IsCommonVariable && AtRuntime () && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonRuntimeVariableSpace))\r
- || (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace))) {\r
- if (AtRuntime ()) {\r
- if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r
- RecordVarErrorFlag (VAR_ERROR_FLAG_USER_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r
- }\r
- if (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonRuntimeVariableSpace)) {\r
- RecordVarErrorFlag (VAR_ERROR_FLAG_SYSTEM_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r
- }\r
- Status = EFI_OUT_OF_RESOURCES;\r
- goto Done;\r
- }\r
- //\r
- // Perform garbage collection & reclaim operation, and integrate the new variable at the same time.\r
- //\r
- Status = Reclaim (\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
- &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- FALSE,\r
- Variable,\r
- NextVariable,\r
- HEADER_ALIGN (VarSize),\r
- FALSE\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // The new variable has been integrated successfully during reclaiming.\r
- //\r
- if (Variable->CurrPtr != NULL) {\r
- CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN) CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable->StartPtr));\r
- CacheVariable->InDeletedTransitionPtr = NULL;\r
- }\r
- UpdateVariableInfo (VariableName, VendorGuid, FALSE, FALSE, TRUE, FALSE, FALSE);\r
- FlushHobVariableToFlash (VariableName, VendorGuid);\r
- } else {\r
- if (IsCommonUserVariable && ((VarSize + mVariableModuleGlobal->CommonUserVariableTotalSize) > mVariableModuleGlobal->CommonMaxUserVariableSpace)) {\r
- RecordVarErrorFlag (VAR_ERROR_FLAG_USER_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r
- }\r
- if (IsCommonVariable && ((VarSize + mVariableModuleGlobal->CommonVariableTotalSize) > mVariableModuleGlobal->CommonVariableSpace)) {\r
- RecordVarErrorFlag (VAR_ERROR_FLAG_SYSTEM_ERROR, VariableName, VendorGuid, Attributes, VarSize);\r
- }\r
- }\r
- goto Done;\r
- }\r
- //\r
- // Four steps\r
- // 1. Write variable header\r
- // 2. Set variable state to header valid\r
- // 3. Write variable data\r
- // 4. Set variable state to valid\r
- //\r
- //\r
- // Step 1:\r
- //\r
- CacheOffset = mVariableModuleGlobal->NonVolatileLastVariableOffset;\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE,\r
- TRUE,\r
- Fvb,\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- sizeof (VARIABLE_HEADER),\r
- (UINT8 *) NextVariable\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- //\r
- // Step 2:\r
- //\r
- NextVariable->State = VAR_HEADER_VALID_ONLY;\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE,\r
- TRUE,\r
- Fvb,\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r
- sizeof (UINT8),\r
- &NextVariable->State\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- //\r
- // Step 3:\r
- //\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE,\r
- TRUE,\r
- Fvb,\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset + sizeof (VARIABLE_HEADER),\r
- (UINT32) VarSize - sizeof (VARIABLE_HEADER),\r
- (UINT8 *) NextVariable + sizeof (VARIABLE_HEADER)\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- //\r
- // Step 4:\r
- //\r
- NextVariable->State = VAR_ADDED;\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- FALSE,\r
- TRUE,\r
- Fvb,\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset + OFFSET_OF (VARIABLE_HEADER, State),\r
- sizeof (UINT8),\r
- &NextVariable->State\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r
-\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) != 0) {\r
- mVariableModuleGlobal->HwErrVariableTotalSize += HEADER_ALIGN (VarSize);\r
- } else {\r
- mVariableModuleGlobal->CommonVariableTotalSize += HEADER_ALIGN (VarSize);\r
- if (IsCommonUserVariable) {\r
- mVariableModuleGlobal->CommonUserVariableTotalSize += HEADER_ALIGN (VarSize);\r
- }\r
- }\r
- //\r
- // update the memory copy of Flash region.\r
- //\r
- CopyMem ((UINT8 *)mNvVariableCache + CacheOffset, (UINT8 *)NextVariable, VarSize);\r
- } else {\r
- //\r
- // Create a volatile variable.\r
- //\r
- Volatile = TRUE;\r
-\r
- if ((UINT32) (VarSize + mVariableModuleGlobal->VolatileLastVariableOffset) >\r
- ((VARIABLE_STORE_HEADER *) ((UINTN) (mVariableModuleGlobal->VariableGlobal.VolatileVariableBase)))->Size) {\r
- //\r
- // Perform garbage collection & reclaim operation, and integrate the new variable at the same time.\r
- //\r
- Status = Reclaim (\r
- mVariableModuleGlobal->VariableGlobal.VolatileVariableBase,\r
- &mVariableModuleGlobal->VolatileLastVariableOffset,\r
- TRUE,\r
- Variable,\r
- NextVariable,\r
- HEADER_ALIGN (VarSize),\r
- FALSE\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // The new variable has been integrated successfully during reclaiming.\r
- //\r
- if (Variable->CurrPtr != NULL) {\r
- CacheVariable->CurrPtr = (VARIABLE_HEADER *)((UINTN) CacheVariable->StartPtr + ((UINTN) Variable->CurrPtr - (UINTN) Variable->StartPtr));\r
- CacheVariable->InDeletedTransitionPtr = NULL;\r
- }\r
- UpdateVariableInfo (VariableName, VendorGuid, TRUE, FALSE, TRUE, FALSE, FALSE);\r
- }\r
- goto Done;\r
- }\r
-\r
- NextVariable->State = VAR_ADDED;\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- TRUE,\r
- TRUE,\r
- Fvb,\r
- mVariableModuleGlobal->VolatileLastVariableOffset,\r
- (UINT32) VarSize,\r
- (UINT8 *) NextVariable\r
- );\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- mVariableModuleGlobal->VolatileLastVariableOffset += HEADER_ALIGN (VarSize);\r
- }\r
-\r
- //\r
- // Mark the old variable as deleted.\r
- //\r
- if (!EFI_ERROR (Status) && Variable->CurrPtr != NULL) {\r
- if (Variable->InDeletedTransitionPtr != NULL) {\r
- //\r
- // Both ADDED and IN_DELETED_TRANSITION old variable are present,\r
- // set IN_DELETED_TRANSITION one to DELETED state first.\r
- //\r
- State = Variable->InDeletedTransitionPtr->State;\r
- State &= VAR_DELETED;\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- Variable->Volatile,\r
- FALSE,\r
- Fvb,\r
- (UINTN) &Variable->InDeletedTransitionPtr->State,\r
- sizeof (UINT8),\r
- &State\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- if (!Variable->Volatile) {\r
- ASSERT (CacheVariable->InDeletedTransitionPtr != NULL);\r
- CacheVariable->InDeletedTransitionPtr->State = State;\r
- }\r
- } else {\r
- goto Done;\r
- }\r
- }\r
-\r
- State = Variable->CurrPtr->State;\r
- State &= VAR_DELETED;\r
-\r
- Status = UpdateVariableStore (\r
- &mVariableModuleGlobal->VariableGlobal,\r
- Variable->Volatile,\r
- FALSE,\r
- Fvb,\r
- (UINTN) &Variable->CurrPtr->State,\r
- sizeof (UINT8),\r
- &State\r
- );\r
- if (!EFI_ERROR (Status) && !Variable->Volatile) {\r
- CacheVariable->CurrPtr->State = State;\r
- }\r
- }\r
-\r
- if (!EFI_ERROR (Status)) {\r
- UpdateVariableInfo (VariableName, VendorGuid, Volatile, FALSE, TRUE, FALSE, FALSE);\r
- if (!Volatile) {\r
- FlushHobVariableToFlash (VariableName, VendorGuid);\r
- }\r
- }\r
-\r
-Done:\r
- return Status;\r
-}\r
-\r
-/**\r
- Check if a Unicode character is a hexadecimal character.\r
-\r
- This function checks if a Unicode character is a\r
- hexadecimal character. The valid hexadecimal character is\r
- L'0' to L'9', L'a' to L'f', or L'A' to L'F'.\r
-\r
-\r
- @param Char The character to check against.\r
-\r
- @retval TRUE If the Char is a hexadecmial character.\r
- @retval FALSE If the Char is not a hexadecmial character.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-IsHexaDecimalDigitCharacter (\r
- IN CHAR16 Char\r
- )\r
-{\r
- return (BOOLEAN) ((Char >= L'0' && Char <= L'9') || (Char >= L'A' && Char <= L'F') || (Char >= L'a' && Char <= L'f'));\r
-}\r
-\r
-/**\r
-\r
- This code checks if variable is hardware error record variable or not.\r
-\r
- According to UEFI spec, hardware error record variable should use the EFI_HARDWARE_ERROR_VARIABLE VendorGuid\r
- and have the L"HwErrRec####" name convention, #### is a printed hex value and no 0x or h is included in the hex value.\r
-\r
- @param VariableName Pointer to variable name.\r
- @param VendorGuid Variable Vendor Guid.\r
-\r
- @retval TRUE Variable is hardware error record variable.\r
- @retval FALSE Variable is not hardware error record variable.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-IsHwErrRecVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- if (!CompareGuid (VendorGuid, &gEfiHardwareErrorVariableGuid) ||\r
- (StrLen (VariableName) != StrLen (L"HwErrRec####")) ||\r
- (StrnCmp(VariableName, L"HwErrRec", StrLen (L"HwErrRec")) != 0) ||\r
- !IsHexaDecimalDigitCharacter (VariableName[0x8]) ||\r
- !IsHexaDecimalDigitCharacter (VariableName[0x9]) ||\r
- !IsHexaDecimalDigitCharacter (VariableName[0xA]) ||\r
- !IsHexaDecimalDigitCharacter (VariableName[0xB])) {\r
- return FALSE;\r
- }\r
-\r
- return TRUE;\r
-}\r
-\r
-/**\r
- Mark a variable that will become read-only after leaving the DXE phase of execution.\r
-\r
- @param[in] This The VARIABLE_LOCK_PROTOCOL instance.\r
- @param[in] VariableName A pointer to the variable name that will be made read-only subsequently.\r
- @param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.\r
-\r
- @retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked\r
- as pending to be read-only.\r
- @retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.\r
- Or VariableName is an empty string.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableLockRequestToLock (\r
- IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- VARIABLE_ENTRY *Entry;\r
- CHAR16 *Name;\r
- LIST_ENTRY *Link;\r
- VARIABLE_ENTRY *LockedEntry;\r
-\r
- if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (mEndOfDxe) {\r
- return EFI_ACCESS_DENIED;\r
- }\r
-\r
- Entry = AllocateRuntimeZeroPool (sizeof (*Entry) + StrSize (VariableName));\r
- if (Entry == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- DEBUG ((EFI_D_INFO, "[Variable] Lock: %g:%s\n", VendorGuid, VariableName));\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- for ( Link = GetFirstNode (&mLockedVariableList)\r
- ; !IsNull (&mLockedVariableList, Link)\r
- ; Link = GetNextNode (&mLockedVariableList, Link)\r
- ) {\r
- LockedEntry = BASE_CR (Link, VARIABLE_ENTRY, Link);\r
- Name = (CHAR16 *) ((UINTN) LockedEntry + sizeof (*LockedEntry));\r
- if (CompareGuid (&LockedEntry->Guid, VendorGuid) && (StrCmp (Name, VariableName) == 0)) {\r
- goto Done;\r
- }\r
- }\r
-\r
- Name = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r
- StrnCpy (Name, VariableName, StrLen (VariableName));\r
- CopyGuid (&Entry->Guid, VendorGuid);\r
- InsertTailList (&mLockedVariableList, &Entry->Link);\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
-\r
- This code finds variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize is external input.\r
- This function will do basic validation, before parse the data.\r
-\r
- @param VariableName Name of Variable to be found.\r
- @param VendorGuid Variable vendor GUID.\r
- @param Attributes Attribute value of the variable found.\r
- @param DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param Data Data pointer.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Find the specified variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceGetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT UINT32 *Attributes OPTIONAL,\r
- IN OUT UINTN *DataSize,\r
- OUT VOID *Data\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK Variable;\r
- UINTN VarDataSize;\r
-\r
- if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- //\r
- // Get data size\r
- //\r
- VarDataSize = DataSizeOfVariable (Variable.CurrPtr);\r
- ASSERT (VarDataSize != 0);\r
-\r
- if (*DataSize >= VarDataSize) {\r
- if (Data == NULL) {\r
- Status = EFI_INVALID_PARAMETER;\r
- goto Done;\r
- }\r
-\r
- CopyMem (Data, GetVariableDataPtr (Variable.CurrPtr), VarDataSize);\r
- if (Attributes != NULL) {\r
- *Attributes = Variable.CurrPtr->Attributes;\r
- }\r
-\r
- *DataSize = VarDataSize;\r
- UpdateVariableInfo (VariableName, VendorGuid, Variable.Volatile, TRUE, FALSE, FALSE, FALSE);\r
-\r
- Status = EFI_SUCCESS;\r
- goto Done;\r
- } else {\r
- *DataSize = VarDataSize;\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- goto Done;\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
- return Status;\r
-}\r
-\r
-\r
-\r
-/**\r
-\r
- This code Finds the Next available variable.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r
-\r
- @param VariableNameSize Size of the variable name.\r
- @param VariableName Pointer to variable name.\r
- @param VendorGuid Variable Vendor Guid.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Find the specified variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceGetNextVariableName (\r
- IN OUT UINTN *VariableNameSize,\r
- IN OUT CHAR16 *VariableName,\r
- IN OUT EFI_GUID *VendorGuid\r
- )\r
-{\r
- VARIABLE_STORE_TYPE Type;\r
- VARIABLE_POINTER_TRACK Variable;\r
- VARIABLE_POINTER_TRACK VariableInHob;\r
- VARIABLE_POINTER_TRACK VariablePtrTrack;\r
- UINTN VarNameSize;\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader[VariableStoreTypeMax];\r
-\r
- if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, FALSE);\r
- if (Variable.CurrPtr == NULL || EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- if (VariableName[0] != 0) {\r
- //\r
- // If variable name is not NULL, get next variable.\r
- //\r
- Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
- }\r
-\r
- //\r
- // 0: Volatile, 1: HOB, 2: Non-Volatile.\r
- // The index and attributes mapping must be kept in this order as FindVariable\r
- // makes use of this mapping to implement search algorithm.\r
- //\r
- VariableStoreHeader[VariableStoreTypeVolatile] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase;\r
- VariableStoreHeader[VariableStoreTypeHob] = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r
- VariableStoreHeader[VariableStoreTypeNv] = mNvVariableCache;\r
-\r
- while (TRUE) {\r
- //\r
- // Switch from Volatile to HOB, to Non-Volatile.\r
- //\r
- while (!IsValidVariableHeader (Variable.CurrPtr, Variable.EndPtr)) {\r
- //\r
- // Find current storage index\r
- //\r
- for (Type = (VARIABLE_STORE_TYPE) 0; Type < VariableStoreTypeMax; Type++) {\r
- if ((VariableStoreHeader[Type] != NULL) && (Variable.StartPtr == GetStartPointer (VariableStoreHeader[Type]))) {\r
- break;\r
- }\r
- }\r
- ASSERT (Type < VariableStoreTypeMax);\r
- //\r
- // Switch to next storage\r
- //\r
- for (Type++; Type < VariableStoreTypeMax; Type++) {\r
- if (VariableStoreHeader[Type] != NULL) {\r
- break;\r
- }\r
- }\r
- //\r
- // Capture the case that\r
- // 1. current storage is the last one, or\r
- // 2. no further storage\r
- //\r
- if (Type == VariableStoreTypeMax) {\r
- Status = EFI_NOT_FOUND;\r
- goto Done;\r
- }\r
- Variable.StartPtr = GetStartPointer (VariableStoreHeader[Type]);\r
- Variable.EndPtr = GetEndPointer (VariableStoreHeader[Type]);\r
- Variable.CurrPtr = Variable.StartPtr;\r
- }\r
-\r
- //\r
- // Variable is found\r
- //\r
- if (Variable.CurrPtr->State == VAR_ADDED || Variable.CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- if (!AtRuntime () || ((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) != 0)) {\r
- if (Variable.CurrPtr->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- //\r
- // If it is a IN_DELETED_TRANSITION variable,\r
- // and there is also a same ADDED one at the same time,\r
- // don't return it.\r
- //\r
- VariablePtrTrack.StartPtr = Variable.StartPtr;\r
- VariablePtrTrack.EndPtr = Variable.EndPtr;\r
- Status = FindVariableEx (\r
- GetVariableNamePtr (Variable.CurrPtr),\r
- &Variable.CurrPtr->VendorGuid,\r
- FALSE,\r
- &VariablePtrTrack\r
- );\r
- if (!EFI_ERROR (Status) && VariablePtrTrack.CurrPtr->State == VAR_ADDED) {\r
- Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
- continue;\r
- }\r
- }\r
-\r
- //\r
- // Don't return NV variable when HOB overrides it\r
- //\r
- if ((VariableStoreHeader[VariableStoreTypeHob] != NULL) && (VariableStoreHeader[VariableStoreTypeNv] != NULL) &&\r
- (Variable.StartPtr == GetStartPointer (VariableStoreHeader[VariableStoreTypeNv]))\r
- ) {\r
- VariableInHob.StartPtr = GetStartPointer (VariableStoreHeader[VariableStoreTypeHob]);\r
- VariableInHob.EndPtr = GetEndPointer (VariableStoreHeader[VariableStoreTypeHob]);\r
- Status = FindVariableEx (\r
- GetVariableNamePtr (Variable.CurrPtr),\r
- &Variable.CurrPtr->VendorGuid,\r
- FALSE,\r
- &VariableInHob\r
- );\r
- if (!EFI_ERROR (Status)) {\r
- Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
- continue;\r
- }\r
- }\r
-\r
- VarNameSize = NameSizeOfVariable (Variable.CurrPtr);\r
- ASSERT (VarNameSize != 0);\r
-\r
- if (VarNameSize <= *VariableNameSize) {\r
- CopyMem (VariableName, GetVariableNamePtr (Variable.CurrPtr), VarNameSize);\r
- CopyMem (VendorGuid, &Variable.CurrPtr->VendorGuid, sizeof (EFI_GUID));\r
- Status = EFI_SUCCESS;\r
- } else {\r
- Status = EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
- *VariableNameSize = VarNameSize;\r
- goto Done;\r
- }\r
- }\r
-\r
- Variable.CurrPtr = GetNextVariablePtr (Variable.CurrPtr);\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
-\r
- This code sets variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param VariableName Name of Variable to be found.\r
- @param VendorGuid Variable vendor GUID.\r
- @param Attributes Attribute value of the variable found\r
- @param DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param Data Data pointer.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Set successfully.\r
- @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_WRITE_PROTECTED Variable is read-only.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceSetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- VARIABLE_POINTER_TRACK Variable;\r
- EFI_STATUS Status;\r
- VARIABLE_HEADER *NextVariable;\r
- EFI_PHYSICAL_ADDRESS Point;\r
- UINTN PayloadSize;\r
- LIST_ENTRY *Link;\r
- VARIABLE_ENTRY *Entry;\r
- CHAR16 *Name;\r
-\r
- //\r
- // Check input parameters.\r
- //\r
- if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (DataSize != 0 && Data == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Check for reserverd bit in variable attribute.\r
- //\r
- if ((Attributes & (~EFI_VARIABLE_ATTRIBUTES_MASK)) != 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // Make sure if runtime bit is set, boot service bit is set also.\r
- //\r
- if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS and EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS attribute\r
- // cannot be set both.\r
- //\r
- if (((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r
- && ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if ((Attributes & EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS) {\r
- if (DataSize < AUTHINFO_SIZE) {\r
- //\r
- // Try to write Authenticated Variable without AuthInfo.\r
- //\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- PayloadSize = DataSize - AUTHINFO_SIZE;\r
- } else if ((Attributes & EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) == EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS) {\r
- //\r
- // Sanity check for EFI_VARIABLE_AUTHENTICATION_2 descriptor.\r
- //\r
- if (DataSize < OFFSET_OF_AUTHINFO2_CERT_DATA ||\r
- ((EFI_VARIABLE_AUTHENTICATION_2 *) Data)->AuthInfo.Hdr.dwLength > DataSize - (OFFSET_OF (EFI_VARIABLE_AUTHENTICATION_2, AuthInfo)) ||\r
- ((EFI_VARIABLE_AUTHENTICATION_2 *) Data)->AuthInfo.Hdr.dwLength < OFFSET_OF (WIN_CERTIFICATE_UEFI_GUID, CertData)) {\r
- return EFI_SECURITY_VIOLATION;\r
- }\r
- PayloadSize = DataSize - AUTHINFO2_SIZE (Data);\r
- } else {\r
- PayloadSize = DataSize;\r
- }\r
-\r
- if ((UINTN)(~0) - PayloadSize < StrSize(VariableName)){\r
- //\r
- // Prevent whole variable size overflow\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- //\r
- // The size of the VariableName, including the Unicode Null in bytes plus\r
- // the DataSize is limited to maximum size of PcdGet32 (PcdMaxHardwareErrorVariableSize)\r
- // bytes for HwErrRec.\r
- //\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- if (StrSize (VariableName) + PayloadSize > PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- if (!IsHwErrRecVariable(VariableName, VendorGuid)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- } else {\r
- //\r
- // The size of the VariableName, including the Unicode Null in bytes plus\r
- // the DataSize is limited to maximum size of Max(Auth)VariableSize bytes.\r
- //\r
- if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r
- if (StrSize (VariableName) + PayloadSize > mVariableModuleGlobal->MaxAuthVariableSize - sizeof (VARIABLE_HEADER)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- } else {\r
- if (StrSize (VariableName) + PayloadSize > mVariableModuleGlobal->MaxVariableSize - sizeof (VARIABLE_HEADER)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- }\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- //\r
- // Consider reentrant in MCA/INIT/NMI. It needs be reupdated.\r
- //\r
- if (1 < InterlockedIncrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState)) {\r
- Point = mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase;\r
- //\r
- // Parse non-volatile variable data and get last variable offset.\r
- //\r
- NextVariable = GetStartPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point);\r
- while (IsValidVariableHeader (NextVariable, GetEndPointer ((VARIABLE_STORE_HEADER *) (UINTN) Point))) {\r
- NextVariable = GetNextVariablePtr (NextVariable);\r
- }\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) NextVariable - (UINTN) Point;\r
- }\r
-\r
- if (mEndOfDxe && mEnableLocking) {\r
- //\r
- // Treat the variables listed in the forbidden variable list as read-only after leaving DXE phase.\r
- //\r
- for ( Link = GetFirstNode (&mLockedVariableList)\r
- ; !IsNull (&mLockedVariableList, Link)\r
- ; Link = GetNextNode (&mLockedVariableList, Link)\r
- ) {\r
- Entry = BASE_CR (Link, VARIABLE_ENTRY, Link);\r
- Name = (CHAR16 *) ((UINTN) Entry + sizeof (*Entry));\r
- if (CompareGuid (&Entry->Guid, VendorGuid) && (StrCmp (Name, VariableName) == 0)) {\r
- Status = EFI_WRITE_PROTECTED;\r
- DEBUG ((EFI_D_INFO, "[Variable]: Changing readonly variable after leaving DXE phase - %g:%s\n", VendorGuid, VariableName));\r
- goto Done;\r
- }\r
- }\r
- }\r
-\r
- Status = InternalVarCheckSetVariableCheck (VariableName, VendorGuid, Attributes, PayloadSize, (VOID *) ((UINTN) Data + DataSize - PayloadSize));\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- //\r
- // Check whether the input variable is already existed.\r
- //\r
- Status = FindVariable (VariableName, VendorGuid, &Variable, &mVariableModuleGlobal->VariableGlobal, TRUE);\r
- if (!EFI_ERROR (Status)) {\r
- if (((Variable.CurrPtr->Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0) && AtRuntime ()) {\r
- Status = EFI_WRITE_PROTECTED;\r
- goto Done;\r
- }\r
- if (Attributes != 0 && (Attributes & (~EFI_VARIABLE_APPEND_WRITE)) != Variable.CurrPtr->Attributes) {\r
- //\r
- // If a preexisting variable is rewritten with different attributes, SetVariable() shall not\r
- // modify the variable and shall return EFI_INVALID_PARAMETER. Two exceptions to this rule:\r
- // 1. No access attributes specified\r
- // 2. The only attribute differing is EFI_VARIABLE_APPEND_WRITE\r
- //\r
- Status = EFI_INVALID_PARAMETER;\r
- DEBUG ((EFI_D_INFO, "[Variable]: Rewritten a preexisting variable(0x%08x) with different attributes(0x%08x) - %g:%s\n", Variable.CurrPtr->Attributes, Attributes, VendorGuid, VariableName));\r
- goto Done;\r
- }\r
- }\r
-\r
- if (!FeaturePcdGet (PcdUefiVariableDefaultLangDeprecate)) {\r
- //\r
- // Hook the operation of setting PlatformLangCodes/PlatformLang and LangCodes/Lang.\r
- //\r
- Status = AutoUpdateLangVariable (VariableName, Data, DataSize);\r
- if (EFI_ERROR (Status)) {\r
- //\r
- // The auto update operation failed, directly return to avoid inconsistency between PlatformLang and Lang.\r
- //\r
- goto Done;\r
- }\r
- }\r
-\r
- //\r
- // Process PK, KEK, Sigdb seperately.\r
- //\r
- if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_PLATFORM_KEY_NAME) == 0)){\r
- Status = ProcessVarWithPk (VariableName, VendorGuid, Data, DataSize, &Variable, Attributes, TRUE);\r
- } else if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_KEY_EXCHANGE_KEY_NAME) == 0)) {\r
- Status = ProcessVarWithPk (VariableName, VendorGuid, Data, DataSize, &Variable, Attributes, FALSE);\r
- } else if (CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid) &&\r
- ((StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE) == 0) ||\r
- (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE1) == 0) ||\r
- (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE2) == 0)\r
- )\r
- ) {\r
- Status = ProcessVarWithPk (VariableName, VendorGuid, Data, DataSize, &Variable, Attributes, FALSE);\r
- if (EFI_ERROR (Status)) {\r
- Status = ProcessVarWithKek (VariableName, VendorGuid, Data, DataSize, &Variable, Attributes);\r
- }\r
- } else {\r
- Status = ProcessVariable (VariableName, VendorGuid, Data, DataSize, &Variable, Attributes);\r
- }\r
-\r
-Done:\r
- InterlockedDecrement (&mVariableModuleGlobal->VariableGlobal.ReentrantState);\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- if (!AtRuntime ()) {\r
- if (!EFI_ERROR (Status)) {\r
- SecureBootHook (\r
- VariableName,\r
- VendorGuid\r
- );\r
- }\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-/**\r
-\r
- This code returns information about the EFI variables.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r
-\r
- @param Attributes Attributes bitmask to specify the type of variables\r
- on which to return information.\r
- @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
- for the EFI variables associated with the attributes specified.\r
- @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
- for EFI variables associated with the attributes specified.\r
- @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r
- associated with the attributes specified.\r
-\r
- @return EFI_SUCCESS Query successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceQueryVariableInfoInternal (\r
- IN UINT32 Attributes,\r
- OUT UINT64 *MaximumVariableStorageSize,\r
- OUT UINT64 *RemainingVariableStorageSize,\r
- OUT UINT64 *MaximumVariableSize\r
- )\r
-{\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *NextVariable;\r
- UINT64 VariableSize;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- UINT64 CommonVariableTotalSize;\r
- UINT64 HwErrVariableTotalSize;\r
- EFI_STATUS Status;\r
- VARIABLE_POINTER_TRACK VariablePtrTrack;\r
-\r
- CommonVariableTotalSize = 0;\r
- HwErrVariableTotalSize = 0;\r
-\r
- if((Attributes & EFI_VARIABLE_NON_VOLATILE) == 0) {\r
- //\r
- // Query is Volatile related.\r
- //\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) ((UINTN) mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r
- } else {\r
- //\r
- // Query is Non-Volatile related.\r
- //\r
- VariableStoreHeader = mNvVariableCache;\r
- }\r
-\r
- //\r
- // Now let's fill *MaximumVariableStorageSize *RemainingVariableStorageSize\r
- // with the storage size (excluding the storage header size).\r
- //\r
- *MaximumVariableStorageSize = VariableStoreHeader->Size - sizeof (VARIABLE_STORE_HEADER);\r
-\r
- //\r
- // Harware error record variable needs larger size.\r
- //\r
- if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- *MaximumVariableStorageSize = PcdGet32 (PcdHwErrStorageSize);\r
- *MaximumVariableSize = PcdGet32 (PcdMaxHardwareErrorVariableSize) - sizeof (VARIABLE_HEADER);\r
- } else {\r
- if ((Attributes & EFI_VARIABLE_NON_VOLATILE) != 0) {\r
- if (AtRuntime ()) {\r
- *MaximumVariableStorageSize = mVariableModuleGlobal->CommonRuntimeVariableSpace;\r
- } else {\r
- *MaximumVariableStorageSize = mVariableModuleGlobal->CommonVariableSpace;\r
- }\r
- }\r
-\r
- //\r
- // Let *MaximumVariableSize be Max(Auth)VariableSize with the exception of the variable header size.\r
- //\r
- if ((Attributes & VARIABLE_ATTRIBUTE_AT_AW) != 0) {\r
- *MaximumVariableSize = mVariableModuleGlobal->MaxAuthVariableSize - sizeof (VARIABLE_HEADER);\r
- } else {\r
- *MaximumVariableSize = mVariableModuleGlobal->MaxVariableSize - sizeof (VARIABLE_HEADER);\r
- }\r
- }\r
-\r
- //\r
- // Point to the starting address of the variables.\r
- //\r
- Variable = GetStartPointer (VariableStoreHeader);\r
-\r
- //\r
- // Now walk through the related variable store.\r
- //\r
- while (IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- VariableSize = (UINT64) (UINTN) NextVariable - (UINT64) (UINTN) Variable;\r
-\r
- if (AtRuntime ()) {\r
- //\r
- // We don't take the state of the variables in mind\r
- // when calculating RemainingVariableStorageSize,\r
- // since the space occupied by variables not marked with\r
- // VAR_ADDED is not allowed to be reclaimed in Runtime.\r
- //\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else {\r
- CommonVariableTotalSize += VariableSize;\r
- }\r
- } else {\r
- //\r
- // Only care about Variables with State VAR_ADDED, because\r
- // the space not marked as VAR_ADDED is reclaimable now.\r
- //\r
- if (Variable->State == VAR_ADDED) {\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else {\r
- CommonVariableTotalSize += VariableSize;\r
- }\r
- } else if (Variable->State == (VAR_IN_DELETED_TRANSITION & VAR_ADDED)) {\r
- //\r
- // If it is a IN_DELETED_TRANSITION variable,\r
- // and there is not also a same ADDED one at the same time,\r
- // this IN_DELETED_TRANSITION variable is valid.\r
- //\r
- VariablePtrTrack.StartPtr = GetStartPointer (VariableStoreHeader);\r
- VariablePtrTrack.EndPtr = GetEndPointer (VariableStoreHeader);\r
- Status = FindVariableEx (\r
- GetVariableNamePtr (Variable),\r
- &Variable->VendorGuid,\r
- FALSE,\r
- &VariablePtrTrack\r
- );\r
- if (!EFI_ERROR (Status) && VariablePtrTrack.CurrPtr->State != VAR_ADDED) {\r
- if ((Variable->Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- HwErrVariableTotalSize += VariableSize;\r
- } else {\r
- CommonVariableTotalSize += VariableSize;\r
- }\r
- }\r
- }\r
- }\r
-\r
- //\r
- // Go to the next one.\r
- //\r
- Variable = NextVariable;\r
- }\r
-\r
- if ((Attributes & EFI_VARIABLE_HARDWARE_ERROR_RECORD) == EFI_VARIABLE_HARDWARE_ERROR_RECORD){\r
- *RemainingVariableStorageSize = *MaximumVariableStorageSize - HwErrVariableTotalSize;\r
- } else {\r
- if (*MaximumVariableStorageSize < CommonVariableTotalSize) {\r
- *RemainingVariableStorageSize = 0;\r
- } else {\r
- *RemainingVariableStorageSize = *MaximumVariableStorageSize - CommonVariableTotalSize;\r
- }\r
- }\r
-\r
- if (*RemainingVariableStorageSize < sizeof (VARIABLE_HEADER)) {\r
- *MaximumVariableSize = 0;\r
- } else if ((*RemainingVariableStorageSize - sizeof (VARIABLE_HEADER)) < *MaximumVariableSize) {\r
- *MaximumVariableSize = *RemainingVariableStorageSize - sizeof (VARIABLE_HEADER);\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
-\r
- This code returns information about the EFI variables.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r
-\r
- @param Attributes Attributes bitmask to specify the type of variables\r
- on which to return information.\r
- @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
- for the EFI variables associated with the attributes specified.\r
- @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
- for EFI variables associated with the attributes specified.\r
- @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r
- associated with the attributes specified.\r
-\r
- @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r
- @return EFI_SUCCESS Query successfully.\r
- @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceQueryVariableInfo (\r
- IN UINT32 Attributes,\r
- OUT UINT64 *MaximumVariableStorageSize,\r
- OUT UINT64 *RemainingVariableStorageSize,\r
- OUT UINT64 *MaximumVariableSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if ((Attributes & VARIABLE_ATTRIBUTE_NV_BS_RT_AT_HR_AW) == 0) {\r
- //\r
- // Make sure the Attributes combination is supported by the platform.\r
- //\r
- return EFI_UNSUPPORTED;\r
- } else if ((Attributes & (EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS)) == EFI_VARIABLE_RUNTIME_ACCESS) {\r
- //\r
- // Make sure if runtime bit is set, boot service bit is set also.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- } else if (AtRuntime () && ((Attributes & EFI_VARIABLE_RUNTIME_ACCESS) == 0)) {\r
- //\r
- // Make sure RT Attribute is set if we are in Runtime phase.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- } else if ((Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == EFI_VARIABLE_HARDWARE_ERROR_RECORD) {\r
- //\r
- // Make sure Hw Attribute is set with NV.\r
- //\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
-\r
- Status = VariableServiceQueryVariableInfoInternal (\r
- Attributes,\r
- MaximumVariableStorageSize,\r
- RemainingVariableStorageSize,\r
- MaximumVariableSize\r
- );\r
-\r
- ReleaseLockOnlyAtBootTime (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
- This function reclaims variable storage if free size is below the threshold.\r
-\r
- Caution: This function may be invoked at SMM mode.\r
- Care must be taken to make sure not security issue.\r
-\r
-**/\r
-VOID\r
-ReclaimForOS(\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN RemainingCommonRuntimeVariableSpace;\r
- UINTN RemainingHwErrVariableSpace;\r
- STATIC BOOLEAN Reclaimed;\r
-\r
- //\r
- // This function will be called only once at EndOfDxe or ReadyToBoot event.\r
- //\r
- if (Reclaimed) {\r
- return;\r
- }\r
- Reclaimed = TRUE;\r
-\r
- Status = EFI_SUCCESS;\r
-\r
- if (mVariableModuleGlobal->CommonRuntimeVariableSpace < mVariableModuleGlobal->CommonVariableTotalSize) {\r
- RemainingCommonRuntimeVariableSpace = 0;\r
- } else {\r
- RemainingCommonRuntimeVariableSpace = mVariableModuleGlobal->CommonRuntimeVariableSpace - mVariableModuleGlobal->CommonVariableTotalSize;\r
- }\r
-\r
- RemainingHwErrVariableSpace = PcdGet32 (PcdHwErrStorageSize) - mVariableModuleGlobal->HwErrVariableTotalSize;\r
-\r
- //\r
- // Check if the free area is below a threshold.\r
- //\r
- if (((RemainingCommonRuntimeVariableSpace < mVariableModuleGlobal->MaxVariableSize) ||\r
- (RemainingCommonRuntimeVariableSpace < mVariableModuleGlobal->MaxAuthVariableSize)) ||\r
- ((PcdGet32 (PcdHwErrStorageSize) != 0) &&\r
- (RemainingHwErrVariableSpace < PcdGet32 (PcdMaxHardwareErrorVariableSize)))){\r
- Status = Reclaim (\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
- &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- FALSE,\r
- NULL,\r
- NULL,\r
- 0,\r
- FALSE\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
- }\r
-}\r
-\r
-/**\r
- Init non-volatile variable store.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
- @retval EFI_VOLUME_CORRUPTED Variable Store or Firmware Volume for Variable Store is corrupted.\r
-\r
-**/\r
-EFI_STATUS\r
-InitNonVolatileVariableStore (\r
- VOID\r
- )\r
-{\r
- EFI_FIRMWARE_VOLUME_HEADER *FvHeader;\r
- VARIABLE_HEADER *Variable;\r
- VARIABLE_HEADER *NextVariable;\r
- EFI_PHYSICAL_ADDRESS VariableStoreBase;\r
- UINT64 VariableStoreLength;\r
- UINTN VariableSize;\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
- EFI_PHYSICAL_ADDRESS NvStorageBase;\r
- UINT8 *NvStorageData;\r
- UINT32 NvStorageSize;\r
- FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *FtwLastWriteData;\r
- UINT32 BackUpOffset;\r
- UINT32 BackUpSize;\r
- UINT32 HwErrStorageSize;\r
- UINT32 MaxUserNvVariableSpaceSize;\r
- UINT32 BoottimeReservedNvVariableSpaceSize;\r
-\r
- mVariableModuleGlobal->FvbInstance = NULL;\r
-\r
- //\r
- // Allocate runtime memory used for a memory copy of the FLASH region.\r
- // Keep the memory and the FLASH in sync as updates occur.\r
- //\r
- NvStorageSize = PcdGet32 (PcdFlashNvStorageVariableSize);\r
- NvStorageData = AllocateRuntimeZeroPool (NvStorageSize);\r
- if (NvStorageData == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r
- if (NvStorageBase == 0) {\r
- NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r
- }\r
- //\r
- // Copy NV storage data to the memory buffer.\r
- //\r
- CopyMem (NvStorageData, (UINT8 *) (UINTN) NvStorageBase, NvStorageSize);\r
-\r
- //\r
- // Check the FTW last write data hob.\r
- //\r
- GuidHob = GetFirstGuidHob (&gEdkiiFaultTolerantWriteGuid);\r
- if (GuidHob != NULL) {\r
- FtwLastWriteData = (FAULT_TOLERANT_WRITE_LAST_WRITE_DATA *) GET_GUID_HOB_DATA (GuidHob);\r
- if (FtwLastWriteData->TargetAddress == NvStorageBase) {\r
- DEBUG ((EFI_D_INFO, "Variable: NV storage is backed up in spare block: 0x%x\n", (UINTN) FtwLastWriteData->SpareAddress));\r
- //\r
- // Copy the backed up NV storage data to the memory buffer from spare block.\r
- //\r
- CopyMem (NvStorageData, (UINT8 *) (UINTN) (FtwLastWriteData->SpareAddress), NvStorageSize);\r
- } else if ((FtwLastWriteData->TargetAddress > NvStorageBase) &&\r
- (FtwLastWriteData->TargetAddress < (NvStorageBase + NvStorageSize))) {\r
- //\r
- // Flash NV storage from the Offset is backed up in spare block.\r
- //\r
- BackUpOffset = (UINT32) (FtwLastWriteData->TargetAddress - NvStorageBase);\r
- BackUpSize = NvStorageSize - BackUpOffset;\r
- DEBUG ((EFI_D_INFO, "Variable: High partial NV storage from offset: %x is backed up in spare block: 0x%x\n", BackUpOffset, (UINTN) FtwLastWriteData->SpareAddress));\r
- //\r
- // Copy the partial backed up NV storage data to the memory buffer from spare block.\r
- //\r
- CopyMem (NvStorageData + BackUpOffset, (UINT8 *) (UINTN) FtwLastWriteData->SpareAddress, BackUpSize);\r
- }\r
- }\r
-\r
- FvHeader = (EFI_FIRMWARE_VOLUME_HEADER *) NvStorageData;\r
-\r
- //\r
- // Check if the Firmware Volume is not corrupted\r
- //\r
- if ((FvHeader->Signature != EFI_FVH_SIGNATURE) || (!CompareGuid (&gEfiSystemNvDataFvGuid, &FvHeader->FileSystemGuid))) {\r
- FreePool (NvStorageData);\r
- DEBUG ((EFI_D_ERROR, "Firmware Volume for Variable Store is corrupted\n"));\r
- return EFI_VOLUME_CORRUPTED;\r
- }\r
-\r
- VariableStoreBase = (EFI_PHYSICAL_ADDRESS) ((UINTN) FvHeader + FvHeader->HeaderLength);\r
- VariableStoreLength = (UINT64) (NvStorageSize - FvHeader->HeaderLength);\r
-\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r
- mNvVariableCache = (VARIABLE_STORE_HEADER *) (UINTN) VariableStoreBase;\r
- if (GetVariableStoreStatus (mNvVariableCache) != EfiValid) {\r
- FreePool (NvStorageData);\r
- DEBUG((EFI_D_ERROR, "Variable Store header is corrupted\n"));\r
- return EFI_VOLUME_CORRUPTED;\r
- }\r
- ASSERT(mNvVariableCache->Size == VariableStoreLength);\r
-\r
-\r
- ASSERT (sizeof (VARIABLE_STORE_HEADER) <= VariableStoreLength);\r
-\r
- HwErrStorageSize = PcdGet32 (PcdHwErrStorageSize);\r
- MaxUserNvVariableSpaceSize = PcdGet32 (PcdMaxUserNvVariableSpaceSize);\r
- BoottimeReservedNvVariableSpaceSize = PcdGet32 (PcdBoottimeReservedNvVariableSpaceSize);\r
-\r
- //\r
- // Note that in EdkII variable driver implementation, Hardware Error Record type variable\r
- // is stored with common variable in the same NV region. So the platform integrator should\r
- // ensure that the value of PcdHwErrStorageSize is less than the value of\r
- // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)).\r
- //\r
- ASSERT (HwErrStorageSize < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)));\r
- //\r
- // Ensure that the value of PcdMaxUserNvVariableSpaceSize is less than the value of\r
- // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32 (PcdHwErrStorageSize).\r
- //\r
- ASSERT (MaxUserNvVariableSpaceSize < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - HwErrStorageSize));\r
- //\r
- // Ensure that the value of PcdBoottimeReservedNvVariableSpaceSize is less than the value of\r
- // (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)) - PcdGet32 (PcdHwErrStorageSize).\r
- //\r
- ASSERT (BoottimeReservedNvVariableSpaceSize < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - HwErrStorageSize));\r
-\r
- mVariableModuleGlobal->CommonVariableSpace = ((UINTN) VariableStoreLength - sizeof (VARIABLE_STORE_HEADER) - HwErrStorageSize);\r
- mVariableModuleGlobal->CommonMaxUserVariableSpace = ((MaxUserNvVariableSpaceSize != 0) ? MaxUserNvVariableSpaceSize : mVariableModuleGlobal->CommonVariableSpace);\r
- mVariableModuleGlobal->CommonRuntimeVariableSpace = mVariableModuleGlobal->CommonVariableSpace - BoottimeReservedNvVariableSpaceSize;\r
-\r
- DEBUG ((EFI_D_INFO, "Variable driver common space: 0x%x 0x%x 0x%x\n", mVariableModuleGlobal->CommonVariableSpace, mVariableModuleGlobal->CommonMaxUserVariableSpace, mVariableModuleGlobal->CommonRuntimeVariableSpace));\r
-\r
- //\r
- // The max NV variable size should be < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)).\r
- //\r
- ASSERT (MAX_NV_VARIABLE_SIZE < (VariableStoreLength - sizeof (VARIABLE_STORE_HEADER)));\r
-\r
- mVariableModuleGlobal->MaxVariableSize = PcdGet32 (PcdMaxVariableSize);\r
- mVariableModuleGlobal->MaxAuthVariableSize = ((PcdGet32 (PcdMaxAuthVariableSize) != 0) ? PcdGet32 (PcdMaxAuthVariableSize) : mVariableModuleGlobal->MaxVariableSize);\r
-\r
- //\r
- // Parse non-volatile variable data and get last variable offset.\r
- //\r
- Variable = GetStartPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase);\r
- while (IsValidVariableHeader (Variable, GetEndPointer ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase))) {\r
- NextVariable = GetNextVariablePtr (Variable);\r
- VariableSize = (UINTN) NextVariable - (UINTN) Variable;\r
- if ((Variable->Attributes & (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) == (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_HARDWARE_ERROR_RECORD)) {\r
- mVariableModuleGlobal->HwErrVariableTotalSize += VariableSize;\r
- } else {\r
- mVariableModuleGlobal->CommonVariableTotalSize += VariableSize;\r
- }\r
-\r
- Variable = NextVariable;\r
- }\r
- mVariableModuleGlobal->NonVolatileLastVariableOffset = (UINTN) Variable - (UINTN) VariableStoreBase;\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- Flush the HOB variable to flash.\r
-\r
- @param[in] VariableName Name of variable has been updated or deleted.\r
- @param[in] VendorGuid Guid of variable has been updated or deleted.\r
-\r
-**/\r
-VOID\r
-FlushHobVariableToFlash (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- VARIABLE_HEADER *Variable;\r
- VOID *VariableData;\r
- BOOLEAN ErrorFlag;\r
-\r
- ErrorFlag = FALSE;\r
-\r
- //\r
- // Flush the HOB variable to flash.\r
- //\r
- if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase;\r
- //\r
- // Set HobVariableBase to 0, it can avoid SetVariable to call back.\r
- //\r
- mVariableModuleGlobal->VariableGlobal.HobVariableBase = 0;\r
- for ( Variable = GetStartPointer (VariableStoreHeader)\r
- ; IsValidVariableHeader (Variable, GetEndPointer (VariableStoreHeader))\r
- ; Variable = GetNextVariablePtr (Variable)\r
- ) {\r
- if (Variable->State != VAR_ADDED) {\r
- //\r
- // The HOB variable has been set to DELETED state in local.\r
- //\r
- continue;\r
- }\r
- ASSERT ((Variable->Attributes & EFI_VARIABLE_NON_VOLATILE) != 0);\r
- if (VendorGuid == NULL || VariableName == NULL ||\r
- !CompareGuid (VendorGuid, &Variable->VendorGuid) ||\r
- StrCmp (VariableName, GetVariableNamePtr (Variable)) != 0) {\r
- VariableData = GetVariableDataPtr (Variable);\r
- Status = VariableServiceSetVariable (\r
- GetVariableNamePtr (Variable),\r
- &Variable->VendorGuid,\r
- Variable->Attributes,\r
- Variable->DataSize,\r
- VariableData\r
- );\r
- DEBUG ((EFI_D_INFO, "Variable driver flush the HOB variable to flash: %g %s %r\n", &Variable->VendorGuid, GetVariableNamePtr (Variable), Status));\r
- } else {\r
- //\r
- // The updated or deleted variable is matched with the HOB variable.\r
- // Don't break here because we will try to set other HOB variables\r
- // since this variable could be set successfully.\r
- //\r
- Status = EFI_SUCCESS;\r
- }\r
- if (!EFI_ERROR (Status)) {\r
- //\r
- // If set variable successful, or the updated or deleted variable is matched with the HOB variable,\r
- // set the HOB variable to DELETED state in local.\r
- //\r
- DEBUG ((EFI_D_INFO, "Variable driver set the HOB variable to DELETED state in local: %g %s\n", &Variable->VendorGuid, GetVariableNamePtr (Variable)));\r
- Variable->State &= VAR_DELETED;\r
- } else {\r
- ErrorFlag = TRUE;\r
- }\r
- }\r
- if (ErrorFlag) {\r
- //\r
- // We still have HOB variable(s) not flushed in flash.\r
- //\r
- mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VariableStoreHeader;\r
- } else {\r
- //\r
- // All HOB variables have been flushed in flash.\r
- //\r
- DEBUG ((EFI_D_INFO, "Variable driver: all HOB variables have been flushed in flash.\n"));\r
- if (!AtRuntime ()) {\r
- FreePool ((VOID *) VariableStoreHeader);\r
- }\r
- }\r
- }\r
-\r
-}\r
-\r
-/**\r
- Initializes variable write service after FTW was ready.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval Others Fail to initialize the variable service.\r
-\r
-**/\r
-EFI_STATUS\r
-VariableWriteServiceInitialize (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- UINTN Index;\r
- UINT8 Data;\r
- EFI_PHYSICAL_ADDRESS VariableStoreBase;\r
- EFI_PHYSICAL_ADDRESS NvStorageBase;\r
-\r
- NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r
- if (NvStorageBase == 0) {\r
- NvStorageBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r
- }\r
- VariableStoreBase = NvStorageBase + (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(NvStorageBase))->HeaderLength);\r
-\r
- //\r
- // Let NonVolatileVariableBase point to flash variable store base directly after FTW ready.\r
- //\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase = VariableStoreBase;\r
- VariableStoreHeader = (VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase;\r
-\r
- //\r
- // Check if the free area is really free.\r
- //\r
- for (Index = mVariableModuleGlobal->NonVolatileLastVariableOffset; Index < VariableStoreHeader->Size; Index++) {\r
- Data = ((UINT8 *) mNvVariableCache)[Index];\r
- if (Data != 0xff) {\r
- //\r
- // There must be something wrong in variable store, do reclaim operation.\r
- //\r
- Status = Reclaim (\r
- mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase,\r
- &mVariableModuleGlobal->NonVolatileLastVariableOffset,\r
- FALSE,\r
- NULL,\r
- NULL,\r
- 0,\r
- FALSE\r
- );\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
- break;\r
- }\r
- }\r
-\r
- FlushHobVariableToFlash (NULL, NULL);\r
-\r
- //\r
- // Authenticated variable initialize.\r
- //\r
- Status = AutenticatedVariableServiceInitialize (mVariableModuleGlobal->MaxAuthVariableSize - sizeof (VARIABLE_HEADER));\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Initializes variable store area for non-volatile and volatile variable.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
-\r
-**/\r
-EFI_STATUS\r
-VariableCommonInitialize (\r
- VOID\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VARIABLE_STORE_HEADER *VolatileVariableStore;\r
- VARIABLE_STORE_HEADER *VariableStoreHeader;\r
- UINT64 VariableStoreLength;\r
- UINTN ScratchSize;\r
- EFI_HOB_GUID_TYPE *GuidHob;\r
-\r
- //\r
- // Allocate runtime memory for variable driver global structure.\r
- //\r
- mVariableModuleGlobal = AllocateRuntimeZeroPool (sizeof (VARIABLE_MODULE_GLOBAL));\r
- if (mVariableModuleGlobal == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- InitializeLock (&mVariableModuleGlobal->VariableGlobal.VariableServicesLock, TPL_NOTIFY);\r
-\r
- //\r
- // Get HOB variable store.\r
- //\r
- GuidHob = GetFirstGuidHob (&gEfiAuthenticatedVariableGuid);\r
- if (GuidHob != NULL) {\r
- VariableStoreHeader = GET_GUID_HOB_DATA (GuidHob);\r
- VariableStoreLength = (UINT64) (GuidHob->Header.HobLength - sizeof (EFI_HOB_GUID_TYPE));\r
- if (GetVariableStoreStatus (VariableStoreHeader) == EfiValid) {\r
- mVariableModuleGlobal->VariableGlobal.HobVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) AllocateRuntimeCopyPool ((UINTN) VariableStoreLength, (VOID *) VariableStoreHeader);\r
- if (mVariableModuleGlobal->VariableGlobal.HobVariableBase == 0) {\r
- FreePool (mVariableModuleGlobal);\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- } else {\r
- DEBUG ((EFI_D_ERROR, "HOB Variable Store header is corrupted!\n"));\r
- }\r
- }\r
-\r
- //\r
- // Allocate memory for volatile variable store, note that there is a scratch space to store scratch data.\r
- //\r
- ScratchSize = MAX_NV_VARIABLE_SIZE;\r
- mVariableModuleGlobal->ScratchBufferSize = ScratchSize;\r
- VolatileVariableStore = AllocateRuntimePool (PcdGet32 (PcdVariableStoreSize) + ScratchSize);\r
- if (VolatileVariableStore == NULL) {\r
- if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r
- FreePool ((VOID *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase);\r
- }\r
- FreePool (mVariableModuleGlobal);\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- SetMem (VolatileVariableStore, PcdGet32 (PcdVariableStoreSize) + ScratchSize, 0xff);\r
-\r
- //\r
- // Initialize Variable Specific Data.\r
- //\r
- mVariableModuleGlobal->VariableGlobal.VolatileVariableBase = (EFI_PHYSICAL_ADDRESS) (UINTN) VolatileVariableStore;\r
- mVariableModuleGlobal->VolatileLastVariableOffset = (UINTN) GetStartPointer (VolatileVariableStore) - (UINTN) VolatileVariableStore;\r
-\r
- CopyGuid (&VolatileVariableStore->Signature, &gEfiAuthenticatedVariableGuid);\r
- VolatileVariableStore->Size = PcdGet32 (PcdVariableStoreSize);\r
- VolatileVariableStore->Format = VARIABLE_STORE_FORMATTED;\r
- VolatileVariableStore->State = VARIABLE_STORE_HEALTHY;\r
- VolatileVariableStore->Reserved = 0;\r
- VolatileVariableStore->Reserved1 = 0;\r
-\r
- //\r
- // Init non-volatile variable store.\r
- //\r
- Status = InitNonVolatileVariableStore ();\r
- if (EFI_ERROR (Status)) {\r
- if (mVariableModuleGlobal->VariableGlobal.HobVariableBase != 0) {\r
- FreePool ((VOID *) (UINTN) mVariableModuleGlobal->VariableGlobal.HobVariableBase);\r
- }\r
- FreePool (mVariableModuleGlobal);\r
- FreePool (VolatileVariableStore);\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Get the proper fvb handle and/or fvb protocol by the given Flash address.\r
-\r
- @param[in] Address The Flash address.\r
- @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r
- @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFvbInfoByAddress (\r
- IN EFI_PHYSICAL_ADDRESS Address,\r
- OUT EFI_HANDLE *FvbHandle OPTIONAL,\r
- OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_HANDLE *HandleBuffer;\r
- UINTN HandleCount;\r
- UINTN Index;\r
- EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
- EFI_FVB_ATTRIBUTES_2 Attributes;\r
- UINTN BlockSize;\r
- UINTN NumberOfBlocks;\r
-\r
- HandleBuffer = NULL;\r
- //\r
- // Get all FVB handles.\r
- //\r
- Status = GetFvbCountAndBuffer (&HandleCount, &HandleBuffer);\r
- if (EFI_ERROR (Status)) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- //\r
- // Get the FVB to access variable store.\r
- //\r
- Fvb = NULL;\r
- for (Index = 0; Index < HandleCount; Index += 1, Status = EFI_NOT_FOUND, Fvb = NULL) {\r
- Status = GetFvbByHandle (HandleBuffer[Index], &Fvb);\r
- if (EFI_ERROR (Status)) {\r
- Status = EFI_NOT_FOUND;\r
- break;\r
- }\r
-\r
- //\r
- // Ensure this FVB protocol supported Write operation.\r
- //\r
- Status = Fvb->GetAttributes (Fvb, &Attributes);\r
- if (EFI_ERROR (Status) || ((Attributes & EFI_FVB2_WRITE_STATUS) == 0)) {\r
- continue;\r
- }\r
-\r
- //\r
- // Compare the address and select the right one.\r
- //\r
- Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- //\r
- // Assume one FVB has one type of BlockSize.\r
- //\r
- Status = Fvb->GetBlockSize (Fvb, 0, &BlockSize, &NumberOfBlocks);\r
- if (EFI_ERROR (Status)) {\r
- continue;\r
- }\r
-\r
- if ((Address >= FvbBaseAddress) && (Address < (FvbBaseAddress + BlockSize * NumberOfBlocks))) {\r
- if (FvbHandle != NULL) {\r
- *FvbHandle = HandleBuffer[Index];\r
- }\r
- if (FvbProtocol != NULL) {\r
- *FvbProtocol = Fvb;\r
- }\r
- Status = EFI_SUCCESS;\r
- break;\r
- }\r
- }\r
- FreePool (HandleBuffer);\r
-\r
- if (Fvb == NULL) {\r
- Status = EFI_NOT_FOUND;\r
- }\r
-\r
- return Status;\r
-}\r
+++ /dev/null
-/** @file\r
- The internal header file includes the common header files, defines\r
- internal structure and functions used by Variable modules.\r
-\r
-Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#ifndef _VARIABLE_H_\r
-#define _VARIABLE_H_\r
-\r
-#include <PiDxe.h>\r
-#include <Protocol/VariableWrite.h>\r
-#include <Protocol/FaultTolerantWrite.h>\r
-#include <Protocol/FirmwareVolumeBlock.h>\r
-#include <Protocol/Variable.h>\r
-#include <Protocol/VariableLock.h>\r
-#include <Protocol/VarCheck.h>\r
-#include <Library/PcdLib.h>\r
-#include <Library/HobLib.h>\r
-#include <Library/UefiDriverEntryPoint.h>\r
-#include <Library/DxeServicesTableLib.h>\r
-#include <Library/UefiRuntimeLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/BaseMemoryLib.h>\r
-#include <Library/UefiBootServicesTableLib.h>\r
-#include <Library/UefiLib.h>\r
-#include <Library/BaseLib.h>\r
-#include <Library/SynchronizationLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/BaseCryptLib.h>\r
-#include <Library/PlatformSecureLib.h>\r
-#include <Guid/GlobalVariable.h>\r
-#include <Guid/EventGroup.h>\r
-#include <Guid/AuthenticatedVariableFormat.h>\r
-#include <Guid/ImageAuthentication.h>\r
-#include <Guid/SystemNvDataGuid.h>\r
-#include <Guid/FaultTolerantWrite.h>\r
-#include <Guid/HardwareErrorVariable.h>\r
-#include <Guid/VarErrorFlag.h>\r
-\r
-#define EFI_VARIABLE_ATTRIBUTES_MASK (EFI_VARIABLE_NON_VOLATILE | \\r
- EFI_VARIABLE_BOOTSERVICE_ACCESS | \\r
- EFI_VARIABLE_RUNTIME_ACCESS | \\r
- EFI_VARIABLE_HARDWARE_ERROR_RECORD | \\r
- EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS | \\r
- EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | \\r
- EFI_VARIABLE_APPEND_WRITE)\r
-\r
-#define VARIABLE_ATTRIBUTE_NV_BS (EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_BS_RT (EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT (VARIABLE_ATTRIBUTE_BS_RT | EFI_VARIABLE_NON_VOLATILE)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_AT (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_HR (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_HARDWARE_ERROR_RECORD)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_AW (VARIABLE_ATTRIBUTE_NV_BS_RT | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_NV_BS_RT_AT_HR_AW (VARIABLE_ATTRIBUTE_NV_BS_RT_AT | EFI_VARIABLE_HARDWARE_ERROR_RECORD | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r
-#define VARIABLE_ATTRIBUTE_AT_AW (EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS)\r
-\r
-#define MAX_NV_VARIABLE_SIZE (MAX (MAX (PcdGet32 (PcdMaxVariableSize), \\r
- PcdGet32 (PcdMaxAuthVariableSize)), \\r
- PcdGet32 (PcdMaxHardwareErrorVariableSize)))\r
-\r
-///\r
-/// The size of a 3 character ISO639 language code.\r
-///\r
-#define ISO_639_2_ENTRY_SIZE 3\r
-\r
-typedef enum {\r
- VariableStoreTypeVolatile,\r
- VariableStoreTypeHob,\r
- VariableStoreTypeNv,\r
- VariableStoreTypeMax\r
-} VARIABLE_STORE_TYPE;\r
-\r
-typedef struct {\r
- VARIABLE_HEADER *CurrPtr;\r
- //\r
- // If both ADDED and IN_DELETED_TRANSITION variable are present,\r
- // InDeletedTransitionPtr will point to the IN_DELETED_TRANSITION one.\r
- // Otherwise, CurrPtr will point to the ADDED or IN_DELETED_TRANSITION one,\r
- // and InDeletedTransitionPtr will be NULL at the same time.\r
- //\r
- VARIABLE_HEADER *InDeletedTransitionPtr;\r
- VARIABLE_HEADER *EndPtr;\r
- VARIABLE_HEADER *StartPtr;\r
- BOOLEAN Volatile;\r
-} VARIABLE_POINTER_TRACK;\r
-\r
-typedef struct {\r
- EFI_PHYSICAL_ADDRESS HobVariableBase;\r
- EFI_PHYSICAL_ADDRESS VolatileVariableBase;\r
- EFI_PHYSICAL_ADDRESS NonVolatileVariableBase;\r
- EFI_LOCK VariableServicesLock;\r
- UINT32 ReentrantState;\r
-} VARIABLE_GLOBAL;\r
-\r
-typedef struct {\r
- VARIABLE_GLOBAL VariableGlobal;\r
- UINTN VolatileLastVariableOffset;\r
- UINTN NonVolatileLastVariableOffset;\r
- UINTN CommonVariableSpace;\r
- UINTN CommonMaxUserVariableSpace;\r
- UINTN CommonRuntimeVariableSpace;\r
- UINTN CommonVariableTotalSize;\r
- UINTN CommonUserVariableTotalSize;\r
- UINTN HwErrVariableTotalSize;\r
- UINTN MaxVariableSize;\r
- UINTN MaxAuthVariableSize;\r
- UINTN ScratchBufferSize;\r
- CHAR8 *PlatformLangCodes;\r
- CHAR8 *LangCodes;\r
- CHAR8 *PlatformLang;\r
- CHAR8 Lang[ISO_639_2_ENTRY_SIZE + 1];\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvbInstance;\r
-} VARIABLE_MODULE_GLOBAL;\r
-\r
-typedef struct {\r
- LIST_ENTRY Link;\r
- EFI_GUID Guid;\r
- //CHAR16 *Name;\r
-} VARIABLE_ENTRY;\r
-\r
-/**\r
- Flush the HOB variable to flash.\r
-\r
- @param[in] VariableName Name of variable has been updated or deleted.\r
- @param[in] VendorGuid Guid of variable has been updated or deleted.\r
-\r
-**/\r
-VOID\r
-FlushHobVariableToFlash (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- );\r
-\r
-/**\r
- Writes a buffer to variable storage space, in the working block.\r
-\r
- This function writes a buffer to variable storage space into a firmware\r
- volume block device. The destination is specified by the parameter\r
- VariableBase. Fault Tolerant Write protocol is used for writing.\r
-\r
- @param VariableBase Base address of the variable to write.\r
- @param VariableBuffer Point to the variable data buffer.\r
-\r
- @retval EFI_SUCCESS The function completed successfully.\r
- @retval EFI_NOT_FOUND Fail to locate Fault Tolerant Write protocol.\r
- @retval EFI_ABORTED The function could not complete successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-FtwVariableSpace (\r
- IN EFI_PHYSICAL_ADDRESS VariableBase,\r
- IN VARIABLE_STORE_HEADER *VariableBuffer\r
- );\r
-\r
-/**\r
- Finds variable in storage blocks of volatile and non-volatile storage areas.\r
-\r
- This code finds variable in storage blocks of volatile and non-volatile storage areas.\r
- If VariableName is an empty string, then we just return the first\r
- qualified variable without comparing VariableName and VendorGuid.\r
- If IgnoreRtCheck is TRUE, then we ignore the EFI_VARIABLE_RUNTIME_ACCESS attribute check\r
- at runtime when searching existing variable, only VariableName and VendorGuid are compared.\r
- Otherwise, variables without EFI_VARIABLE_RUNTIME_ACCESS are not visible at runtime.\r
-\r
- @param[in] VariableName Name of the variable to be found.\r
- @param[in] VendorGuid Vendor GUID to be found.\r
- @param[out] PtrTrack VARIABLE_POINTER_TRACK structure for output,\r
- including the range searched and the target position.\r
- @param[in] Global Pointer to VARIABLE_GLOBAL structure, including\r
- base of volatile variable storage area, base of\r
- NV variable storage area, and a lock.\r
- @param[in] IgnoreRtCheck Ignore EFI_VARIABLE_RUNTIME_ACCESS attribute\r
- check at runtime when searching variable.\r
-\r
- @retval EFI_INVALID_PARAMETER If VariableName is not an empty string, while\r
- VendorGuid is NULL.\r
- @retval EFI_SUCCESS Variable successfully found.\r
- @retval EFI_NOT_FOUND Variable not found\r
-\r
-**/\r
-EFI_STATUS\r
-FindVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT VARIABLE_POINTER_TRACK *PtrTrack,\r
- IN VARIABLE_GLOBAL *Global,\r
- IN BOOLEAN IgnoreRtCheck\r
- );\r
-\r
-/**\r
-\r
- Gets the pointer to the end of the variable storage area.\r
-\r
- This function gets pointer to the end of the variable storage\r
- area, according to the input variable store header.\r
-\r
- @param VarStoreHeader Pointer to the Variable Store Header.\r
-\r
- @return Pointer to the end of the variable storage area.\r
-\r
-**/\r
-VARIABLE_HEADER *\r
-GetEndPointer (\r
- IN VARIABLE_STORE_HEADER *VarStoreHeader\r
- );\r
-\r
-/**\r
-\r
- This code gets the pointer to the variable data.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Pointer to Variable Data.\r
-\r
-**/\r
-UINT8 *\r
-GetVariableDataPtr (\r
- IN VARIABLE_HEADER *Variable\r
- );\r
-\r
-/**\r
-\r
- This code gets the size of variable data.\r
-\r
- @param Variable Pointer to the Variable Header.\r
-\r
- @return Size of variable in bytes.\r
-\r
-**/\r
-UINTN\r
-DataSizeOfVariable (\r
- IN VARIABLE_HEADER *Variable\r
- );\r
-\r
-/**\r
- This function is to check if the remaining variable space is enough to set\r
- all Variables from argument list successfully. The purpose of the check\r
- is to keep the consistency of the Variables to be in variable storage.\r
-\r
- Note: Variables are assumed to be in same storage.\r
- The set sequence of Variables will be same with the sequence of VariableEntry from argument list,\r
- so follow the argument sequence to check the Variables.\r
-\r
- @param[in] Attributes Variable attributes for Variable entries.\r
- @param ... The variable argument list with type VARIABLE_ENTRY_CONSISTENCY *.\r
- A NULL terminates the list. The VariableSize of \r
- VARIABLE_ENTRY_CONSISTENCY is the variable data size as input.\r
- It will be changed to variable total size as output.\r
-\r
- @retval TRUE Have enough variable space to set the Variables successfully.\r
- @retval FALSE No enough variable space to set the Variables successfully.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-CheckRemainingSpaceForConsistency (\r
- IN UINT32 Attributes,\r
- ...\r
- );\r
- \r
-/**\r
- Update the variable region with Variable information. If EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS is set,\r
- index of associated public key is needed.\r
-\r
- @param[in] VariableName Name of variable.\r
- @param[in] VendorGuid Guid of variable.\r
- @param[in] Data Variable data.\r
- @param[in] DataSize Size of data. 0 means delete.\r
- @param[in] Attributes Attributes of the variable.\r
- @param[in] KeyIndex Index of associated public key.\r
- @param[in] MonotonicCount Value of associated monotonic count.\r
- @param[in, out] Variable The variable information that is used to keep track of variable usage.\r
-\r
- @param[in] TimeStamp Value of associated TimeStamp.\r
-\r
- @retval EFI_SUCCESS The update operation is success.\r
- @retval EFI_OUT_OF_RESOURCES Variable region is full, cannot write other data into this region.\r
-\r
-**/\r
-EFI_STATUS\r
-UpdateVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN VOID *Data,\r
- IN UINTN DataSize,\r
- IN UINT32 Attributes OPTIONAL,\r
- IN UINT32 KeyIndex OPTIONAL,\r
- IN UINT64 MonotonicCount OPTIONAL,\r
- IN OUT VARIABLE_POINTER_TRACK *Variable,\r
- IN EFI_TIME *TimeStamp OPTIONAL \r
- );\r
-\r
-\r
-/**\r
- Return TRUE if ExitBootServices () has been called.\r
- \r
- @retval TRUE If ExitBootServices () has been called.\r
-**/\r
-BOOLEAN\r
-AtRuntime (\r
- VOID\r
- );\r
-\r
-/**\r
- Initializes a basic mutual exclusion lock.\r
-\r
- This function initializes a basic mutual exclusion lock to the released state \r
- and returns the lock. Each lock provides mutual exclusion access at its task \r
- priority level. Since there is no preemption or multiprocessor support in EFI,\r
- acquiring the lock only consists of raising to the locks TPL.\r
- If Lock is NULL, then ASSERT().\r
- If Priority is not a valid TPL value, then ASSERT().\r
-\r
- @param Lock A pointer to the lock data structure to initialize.\r
- @param Priority EFI TPL is associated with the lock.\r
-\r
- @return The lock.\r
-\r
-**/\r
-EFI_LOCK *\r
-InitializeLock (\r
- IN OUT EFI_LOCK *Lock,\r
- IN EFI_TPL Priority\r
- );\r
-\r
- \r
-/**\r
- Acquires lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function that will be removed when\r
- EfiAcquireLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiAcquireLock() at boot time, and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to acquire.\r
-\r
-**/\r
-VOID\r
-AcquireLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- );\r
-\r
-\r
-/**\r
- Releases lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function which will be removed when\r
- EfiReleaseLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiReleaseLock() at boot time and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to release.\r
-\r
-**/\r
-VOID\r
-ReleaseLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- ); \r
-\r
-/**\r
- Retrive the FVB protocol interface by HANDLE.\r
-\r
- @param[in] FvBlockHandle The handle of FVB protocol that provides services for\r
- reading, writing, and erasing the target block.\r
- @param[out] FvBlock The interface of FVB protocol\r
-\r
- @retval EFI_SUCCESS The interface information for the specified protocol was returned.\r
- @retval EFI_UNSUPPORTED The device does not support the FVB protocol.\r
- @retval EFI_INVALID_PARAMETER FvBlockHandle is not a valid EFI_HANDLE or FvBlock is NULL.\r
- \r
-**/\r
-EFI_STATUS\r
-GetFvbByHandle (\r
- IN EFI_HANDLE FvBlockHandle,\r
- OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvBlock\r
- );\r
-\r
-\r
-/**\r
- Retrive the Swap Address Range protocol interface.\r
-\r
- @param[out] SarProtocol The interface of SAR protocol\r
-\r
- @retval EFI_SUCCESS The SAR protocol instance was found and returned in SarProtocol.\r
- @retval EFI_NOT_FOUND The SAR protocol instance was not found.\r
- @retval EFI_INVALID_PARAMETER SarProtocol is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetSarProtocol (\r
- OUT VOID **SarProtocol\r
- );\r
-\r
-/**\r
- Function returns an array of handles that support the FVB protocol\r
- in a buffer allocated from pool. \r
-\r
- @param[out] NumberHandles The number of handles returned in Buffer.\r
- @param[out] Buffer A pointer to the buffer to return the requested\r
- array of handles that support FVB protocol.\r
-\r
- @retval EFI_SUCCESS The array of handles was returned in Buffer, and the number of\r
- handles in Buffer was returned in NumberHandles.\r
- @retval EFI_NOT_FOUND No FVB handle was found.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the matching results.\r
- @retval EFI_INVALID_PARAMETER NumberHandles is NULL or Buffer is NULL.\r
- \r
-**/\r
-EFI_STATUS\r
-GetFvbCountAndBuffer (\r
- OUT UINTN *NumberHandles,\r
- OUT EFI_HANDLE **Buffer\r
- );\r
-\r
-/**\r
- Initializes variable store area for non-volatile and volatile variable.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval EFI_OUT_OF_RESOURCES Fail to allocate enough memory resource.\r
-\r
-**/\r
-EFI_STATUS\r
-VariableCommonInitialize (\r
- VOID\r
- );\r
-\r
-/**\r
-\r
- Variable store garbage collection and reclaim operation.\r
-\r
- If ReclaimPubKeyStore is FALSE, reclaim variable space by deleting the obsoleted varaibles.\r
- If ReclaimPubKeyStore is TRUE, reclaim invalid key in public key database and update the PubKeyIndex\r
- for all the count-based authenticate variable in NV storage.\r
-\r
- @param[in] VariableBase Base address of variable store.\r
- @param[out] LastVariableOffset Offset of last variable.\r
- @param[in] IsVolatile The variable store is volatile or not;\r
- if it is non-volatile, need FTW.\r
- @param[in, out] UpdatingPtrTrack Pointer to updating variable pointer track structure.\r
- @param[in] NewVariable Pointer to new variable.\r
- @param[in] NewVariableSize New variable size.\r
- @param[in] ReclaimPubKeyStore Reclaim for public key database or not.\r
- \r
- @return EFI_SUCCESS Reclaim operation has finished successfully.\r
- @return EFI_OUT_OF_RESOURCES No enough memory resources or variable space.\r
- @return EFI_DEVICE_ERROR The public key database doesn't exist.\r
- @return Others Unexpect error happened during reclaim operation.\r
-\r
-**/\r
-EFI_STATUS\r
-Reclaim (\r
- IN EFI_PHYSICAL_ADDRESS VariableBase,\r
- OUT UINTN *LastVariableOffset,\r
- IN BOOLEAN IsVolatile,\r
- IN OUT VARIABLE_POINTER_TRACK *UpdatingPtrTrack,\r
- IN VARIABLE_HEADER *NewVariable,\r
- IN UINTN NewVariableSize,\r
- IN BOOLEAN ReclaimPubKeyStore\r
- );\r
-\r
-/**\r
- This function reclaims variable storage if free size is below the threshold.\r
- \r
-**/\r
-VOID\r
-ReclaimForOS(\r
- VOID\r
- ); \r
-\r
-\r
-/**\r
- Initializes variable write service after FVB was ready.\r
-\r
- @retval EFI_SUCCESS Function successfully executed.\r
- @retval Others Fail to initialize the variable service.\r
-\r
-**/\r
-EFI_STATUS\r
-VariableWriteServiceInitialize (\r
- VOID\r
- );\r
- \r
-/**\r
- Retrive the SMM Fault Tolerent Write protocol interface.\r
-\r
- @param[out] FtwProtocol The interface of SMM Ftw protocol\r
-\r
- @retval EFI_SUCCESS The SMM SAR protocol instance was found and returned in SarProtocol.\r
- @retval EFI_NOT_FOUND The SMM SAR protocol instance was not found.\r
- @retval EFI_INVALID_PARAMETER SarProtocol is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFtwProtocol (\r
- OUT VOID **FtwProtocol\r
- );\r
-\r
-/**\r
- Get the proper fvb handle and/or fvb protocol by the given Flash address.\r
-\r
- @param[in] Address The Flash address.\r
- @param[out] FvbHandle In output, if it is not NULL, it points to the proper FVB handle.\r
- @param[out] FvbProtocol In output, if it is not NULL, it points to the proper FVB protocol.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFvbInfoByAddress (\r
- IN EFI_PHYSICAL_ADDRESS Address,\r
- OUT EFI_HANDLE *FvbHandle OPTIONAL,\r
- OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvbProtocol OPTIONAL\r
- );\r
-\r
-/**\r
-\r
- This code finds variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
-\r
- @param VariableName Name of Variable to be found.\r
- @param VendorGuid Variable vendor GUID.\r
- @param Attributes Attribute value of the variable found.\r
- @param DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param Data Data pointer.\r
- \r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Find the specified variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceGetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT UINT32 *Attributes OPTIONAL,\r
- IN OUT UINTN *DataSize,\r
- OUT VOID *Data\r
- );\r
-\r
-/**\r
-\r
- This code Finds the Next available variable.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r
-\r
- @param VariableNameSize Size of the variable name.\r
- @param VariableName Pointer to variable name.\r
- @param VendorGuid Variable Vendor Guid.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Find the specified variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceGetNextVariableName (\r
- IN OUT UINTN *VariableNameSize,\r
- IN OUT CHAR16 *VariableName,\r
- IN OUT EFI_GUID *VendorGuid\r
- );\r
-\r
-/**\r
-\r
- This code sets variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode, and datasize and data are external input.\r
- This function will do basic validation, before parse the data.\r
- This function will parse the authentication carefully to avoid security issues, like\r
- buffer overflow, integer overflow.\r
- This function will check attribute carefully to avoid authentication bypass.\r
-\r
- @param VariableName Name of Variable to be found.\r
- @param VendorGuid Variable vendor GUID.\r
- @param Attributes Attribute value of the variable found\r
- @param DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param Data Data pointer.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Set successfully.\r
- @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_WRITE_PROTECTED Variable is read-only.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceSetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- );\r
-\r
-/**\r
-\r
- This code returns information about the EFI variables.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r
-\r
- @param Attributes Attributes bitmask to specify the type of variables\r
- on which to return information.\r
- @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
- for the EFI variables associated with the attributes specified.\r
- @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
- for EFI variables associated with the attributes specified.\r
- @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r
- associated with the attributes specified.\r
-\r
- @return EFI_SUCCESS Query successfully.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceQueryVariableInfoInternal (\r
- IN UINT32 Attributes,\r
- OUT UINT64 *MaximumVariableStorageSize,\r
- OUT UINT64 *RemainingVariableStorageSize,\r
- OUT UINT64 *MaximumVariableSize\r
- );\r
-\r
-/**\r
-\r
- This code returns information about the EFI variables.\r
-\r
- Caution: This function may receive untrusted input.\r
- This function may be invoked in SMM mode. This function will do basic validation, before parse the data.\r
-\r
- @param Attributes Attributes bitmask to specify the type of variables\r
- on which to return information.\r
- @param MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
- for the EFI variables associated with the attributes specified.\r
- @param RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
- for EFI variables associated with the attributes specified.\r
- @param MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r
- associated with the attributes specified.\r
-\r
- @return EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r
- @return EFI_SUCCESS Query successfully.\r
- @return EFI_UNSUPPORTED The attribute is not supported on this platform.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceQueryVariableInfo (\r
- IN UINT32 Attributes,\r
- OUT UINT64 *MaximumVariableStorageSize,\r
- OUT UINT64 *RemainingVariableStorageSize,\r
- OUT UINT64 *MaximumVariableSize\r
- ); \r
-\r
-/**\r
- Mark a variable that will become read-only after leaving the DXE phase of execution.\r
-\r
- @param[in] This The VARIABLE_LOCK_PROTOCOL instance.\r
- @param[in] VariableName A pointer to the variable name that will be made read-only subsequently.\r
- @param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.\r
-\r
- @retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked\r
- as pending to be read-only.\r
- @retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.\r
- Or VariableName is an empty string.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableLockRequestToLock (\r
- IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- );\r
-\r
-/**\r
- Check if a Unicode character is a hexadecimal character.\r
-\r
- This function checks if a Unicode character is a\r
- hexadecimal character. The valid hexadecimal character is\r
- L'0' to L'9', L'a' to L'f', or L'A' to L'F'.\r
-\r
-\r
- @param Char The character to check against.\r
-\r
- @retval TRUE If the Char is a hexadecmial character.\r
- @retval FALSE If the Char is not a hexadecmial character.\r
-\r
-**/\r
-BOOLEAN\r
-EFIAPI\r
-IsHexaDecimalDigitCharacter (\r
- IN CHAR16 Char\r
- );\r
-\r
-/**\r
- Internal SetVariable check.\r
-\r
- @param[in] VariableName Name of Variable to set.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Attributes Attribute value of the variable.\r
- @param[in] DataSize Size of Data to set.\r
- @param[in] Data Data pointer.\r
-\r
- @retval EFI_SUCCESS The SetVariable check result was success.\r
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits, name, and GUID were supplied,\r
- or the DataSize exceeds the minimum or maximum allowed,\r
- or the Data value is not following UEFI spec for UEFI defined variables.\r
- @retval EFI_WRITE_PROTECTED The variable in question is read-only.\r
- @retval Others The return status from check handler.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckSetVariableCheck (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- );\r
-\r
-/**\r
- Register SetVariable check handler.\r
-\r
- @param[in] Handler Pointer to check handler.\r
-\r
- @retval EFI_SUCCESS The SetVariable check handler was registered successfully.\r
- @retval EFI_INVALID_PARAMETER Handler is NULL.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource for the SetVariable check handler register request.\r
- @retval EFI_UNSUPPORTED This interface is not implemented.\r
- For example, it is unsupported in VarCheck protocol if both VarCheck and SmmVarCheck protocols are present.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckRegisterSetVariableCheckHandler (\r
- IN VAR_CHECK_SET_VARIABLE_CHECK_HANDLER Handler\r
- );\r
-\r
-/**\r
- Internal variable property get.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[out] VariableProperty Pointer to the output variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.\r
- @retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-InternalVarCheckVariablePropertyGet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- );\r
-\r
-/**\r
- Variable property set.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[in] VariableProperty Pointer to the input variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was set successfully.\r
- @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string,\r
- or the fields of VariableProperty are not valid.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource for the variable property set request.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckVariablePropertySet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- );\r
-\r
-/**\r
- Variable property get.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[out] VariableProperty Pointer to the output variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.\r
- @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string.\r
- @retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckVariablePropertyGet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- );\r
-\r
-/**\r
- Initialize variable quota.\r
-\r
-**/\r
-VOID\r
-InitializeVariableQuota (\r
- VOID\r
- );\r
-\r
-extern VARIABLE_MODULE_GLOBAL *mVariableModuleGlobal;\r
-\r
-#endif\r
+++ /dev/null
-/** @file\r
- Implement all four UEFI Runtime Variable services for the nonvolatile\r
- and volatile storage space and install variable architecture protocol.\r
-\r
-Copyright (C) 2013, Red Hat, Inc.\r
-Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials\r
-are licensed and made available under the terms and conditions of the BSD License\r
-which accompanies this distribution. The full text of the license may be found at\r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include "Variable.h"\r
-#include "AuthService.h"\r
-\r
-extern VARIABLE_STORE_HEADER *mNvVariableCache;\r
-extern VARIABLE_INFO_ENTRY *gVariableInfo;\r
-EFI_HANDLE mHandle = NULL;\r
-EFI_EVENT mVirtualAddressChangeEvent = NULL;\r
-EFI_EVENT mFtwRegistration = NULL;\r
-extern LIST_ENTRY mLockedVariableList;\r
-extern LIST_ENTRY mVarCheckVariableList;\r
-extern UINT32 mNumberOfHandler;\r
-extern VAR_CHECK_SET_VARIABLE_CHECK_HANDLER *mHandlerTable;\r
-extern BOOLEAN mEndOfDxe;\r
-EDKII_VARIABLE_LOCK_PROTOCOL mVariableLock = { VariableLockRequestToLock };\r
-EDKII_VAR_CHECK_PROTOCOL mVarCheck = { VarCheckRegisterSetVariableCheckHandler,\r
- VarCheckVariablePropertySet,\r
- VarCheckVariablePropertyGet };\r
-\r
-/**\r
- Return TRUE if ExitBootServices () has been called.\r
-\r
- @retval TRUE If ExitBootServices () has been called.\r
-**/\r
-BOOLEAN\r
-AtRuntime (\r
- VOID\r
- )\r
-{\r
- return EfiAtRuntime ();\r
-}\r
-\r
-\r
-/**\r
- Initializes a basic mutual exclusion lock.\r
-\r
- This function initializes a basic mutual exclusion lock to the released state\r
- and returns the lock. Each lock provides mutual exclusion access at its task\r
- priority level. Since there is no preemption or multiprocessor support in EFI,\r
- acquiring the lock only consists of raising to the locks TPL.\r
- If Lock is NULL, then ASSERT().\r
- If Priority is not a valid TPL value, then ASSERT().\r
-\r
- @param Lock A pointer to the lock data structure to initialize.\r
- @param Priority EFI TPL is associated with the lock.\r
-\r
- @return The lock.\r
-\r
-**/\r
-EFI_LOCK *\r
-InitializeLock (\r
- IN OUT EFI_LOCK *Lock,\r
- IN EFI_TPL Priority\r
- )\r
-{\r
- return EfiInitializeLock (Lock, Priority);\r
-}\r
-\r
-\r
-/**\r
- Acquires lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function that will be removed when\r
- EfiAcquireLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiAcquireLock() at boot time, and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to acquire.\r
-\r
-**/\r
-VOID\r
-AcquireLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
- if (!AtRuntime ()) {\r
- EfiAcquireLock (Lock);\r
- }\r
-}\r
-\r
-\r
-/**\r
- Releases lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function which will be removed when\r
- EfiReleaseLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiReleaseLock() at boot time and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to release.\r
-\r
-**/\r
-VOID\r
-ReleaseLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
- if (!AtRuntime ()) {\r
- EfiReleaseLock (Lock);\r
- }\r
-}\r
-\r
-/**\r
- Retrive the Fault Tolerent Write protocol interface.\r
-\r
- @param[out] FtwProtocol The interface of Ftw protocol\r
-\r
- @retval EFI_SUCCESS The FTW protocol instance was found and returned in FtwProtocol.\r
- @retval EFI_NOT_FOUND The FTW protocol instance was not found.\r
- @retval EFI_INVALID_PARAMETER SarProtocol is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFtwProtocol (\r
- OUT VOID **FtwProtocol\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Locate Fault Tolerent Write protocol\r
- //\r
- Status = gBS->LocateProtocol (\r
- &gEfiFaultTolerantWriteProtocolGuid,\r
- NULL,\r
- FtwProtocol\r
- );\r
- return Status;\r
-}\r
-\r
-/**\r
- Retrive the FVB protocol interface by HANDLE.\r
-\r
- @param[in] FvBlockHandle The handle of FVB protocol that provides services for\r
- reading, writing, and erasing the target block.\r
- @param[out] FvBlock The interface of FVB protocol\r
-\r
- @retval EFI_SUCCESS The interface information for the specified protocol was returned.\r
- @retval EFI_UNSUPPORTED The device does not support the FVB protocol.\r
- @retval EFI_INVALID_PARAMETER FvBlockHandle is not a valid EFI_HANDLE or FvBlock is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFvbByHandle (\r
- IN EFI_HANDLE FvBlockHandle,\r
- OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvBlock\r
- )\r
-{\r
- //\r
- // To get the FVB protocol interface on the handle\r
- //\r
- return gBS->HandleProtocol (\r
- FvBlockHandle,\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- (VOID **) FvBlock\r
- );\r
-}\r
-\r
-\r
-/**\r
- Function returns an array of handles that support the FVB protocol\r
- in a buffer allocated from pool.\r
-\r
- @param[out] NumberHandles The number of handles returned in Buffer.\r
- @param[out] Buffer A pointer to the buffer to return the requested\r
- array of handles that support FVB protocol.\r
-\r
- @retval EFI_SUCCESS The array of handles was returned in Buffer, and the number of\r
- handles in Buffer was returned in NumberHandles.\r
- @retval EFI_NOT_FOUND No FVB handle was found.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the matching results.\r
- @retval EFI_INVALID_PARAMETER NumberHandles is NULL or Buffer is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFvbCountAndBuffer (\r
- OUT UINTN *NumberHandles,\r
- OUT EFI_HANDLE **Buffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Locate all handles of Fvb protocol\r
- //\r
- Status = gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- NULL,\r
- NumberHandles,\r
- Buffer\r
- );\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r
-\r
- This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
- It convers pointer to new virtual address.\r
-\r
- @param Event Event whose notification function is being invoked.\r
- @param Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-VariableClassAddressChangeEvent (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN Index;\r
-\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetBlockSize);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetPhysicalAddress);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->GetAttributes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->SetAttributes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->Read);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->Write);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance->EraseBlocks);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->FvbInstance);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLangCodes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->LangCodes);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->PlatformLang);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->VariableGlobal.NonVolatileVariableBase);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->VariableGlobal.VolatileVariableBase);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal->VariableGlobal.HobVariableBase);\r
- EfiConvertPointer (0x0, (VOID **) &mVariableModuleGlobal);\r
- EfiConvertPointer (0x0, (VOID **) &mHashCtx);\r
- EfiConvertPointer (0x0, (VOID **) &mNvVariableCache);\r
- EfiConvertPointer (0x0, (VOID **) &mPubKeyStore);\r
- EfiConvertPointer (0x0, (VOID **) &mCertDbStore);\r
- EfiConvertPointer (0x0, (VOID **) &mHandlerTable);\r
- for (Index = 0; Index < mNumberOfHandler; Index++) {\r
- EfiConvertPointer (0x0, (VOID **) &mHandlerTable[Index]);\r
- }\r
-\r
- Status = EfiConvertList (0x0, &mLockedVariableList);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = EfiConvertList (0x0, &mVarCheckVariableList);\r
- ASSERT_EFI_ERROR (Status);\r
-}\r
-\r
-\r
-/**\r
- Notification function of EVT_GROUP_READY_TO_BOOT event group.\r
-\r
- This is a notification function registered on EVT_GROUP_READY_TO_BOOT event group.\r
- When the Boot Manager is about to load and execute a boot option, it reclaims variable\r
- storage if free size is below the threshold.\r
-\r
- @param Event Event whose notification function is being invoked.\r
- @param Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-OnReadyToBoot (\r
- EFI_EVENT Event,\r
- VOID *Context\r
- )\r
-{\r
- //\r
- // Set the End Of DXE bit in case the EFI_END_OF_DXE_EVENT_GROUP_GUID event is not signaled.\r
- //\r
- mEndOfDxe = TRUE;\r
- //\r
- // The initialization for variable quota.\r
- //\r
- InitializeVariableQuota ();\r
- ReclaimForOS ();\r
- if (FeaturePcdGet (PcdVariableCollectStatistics)) {\r
- gBS->InstallConfigurationTable (&gEfiAuthenticatedVariableGuid, gVariableInfo);\r
- }\r
-}\r
-\r
-/**\r
- Notification function of EFI_END_OF_DXE_EVENT_GROUP_GUID event group.\r
-\r
- This is a notification function registered on EFI_END_OF_DXE_EVENT_GROUP_GUID event group.\r
-\r
- @param Event Event whose notification function is being invoked.\r
- @param Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-OnEndOfDxe (\r
- EFI_EVENT Event,\r
- VOID *Context\r
- )\r
-{\r
- mEndOfDxe = TRUE;\r
- //\r
- // The initialization for variable quota.\r
- //\r
- InitializeVariableQuota ();\r
- if (PcdGetBool (PcdReclaimVariableSpaceAtEndOfDxe)) {\r
- ReclaimForOS ();\r
- }\r
-}\r
-\r
-/**\r
- Fault Tolerant Write protocol notification event handler.\r
-\r
- Non-Volatile variable write may needs FTW protocol to reclaim when\r
- writting variable.\r
-\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-FtwNotificationEvent (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvbProtocol;\r
- EFI_FAULT_TOLERANT_WRITE_PROTOCOL *FtwProtocol;\r
- EFI_PHYSICAL_ADDRESS NvStorageVariableBase;\r
- EFI_GCD_MEMORY_SPACE_DESCRIPTOR GcdDescriptor;\r
- EFI_PHYSICAL_ADDRESS BaseAddress;\r
- UINT64 Length;\r
- EFI_PHYSICAL_ADDRESS VariableStoreBase;\r
- UINT64 VariableStoreLength;\r
- UINTN FtwMaxBlockSize;\r
-\r
- //\r
- // Ensure FTW protocol is installed.\r
- //\r
- Status = GetFtwProtocol ((VOID**) &FtwProtocol);\r
- if (EFI_ERROR (Status)) {\r
- return ;\r
- }\r
-\r
- Status = FtwProtocol->GetMaxBlockSize (FtwProtocol, &FtwMaxBlockSize);\r
- if (!EFI_ERROR (Status)) {\r
- ASSERT (PcdGet32 (PcdFlashNvStorageVariableSize) <= FtwMaxBlockSize);\r
- }\r
-\r
- //\r
- // Find the proper FVB protocol for variable.\r
- //\r
- NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r
- if (NvStorageVariableBase == 0) {\r
- NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r
- }\r
- Status = GetFvbInfoByAddress (NvStorageVariableBase, NULL, &FvbProtocol);\r
- if (EFI_ERROR (Status)) {\r
- return ;\r
- }\r
- mVariableModuleGlobal->FvbInstance = FvbProtocol;\r
-\r
- //\r
- // Mark the variable storage region of the FLASH as RUNTIME.\r
- //\r
- VariableStoreBase = NvStorageVariableBase + (((EFI_FIRMWARE_VOLUME_HEADER *)(UINTN)(NvStorageVariableBase))->HeaderLength);\r
- VariableStoreLength = ((VARIABLE_STORE_HEADER *)(UINTN)VariableStoreBase)->Size;\r
- BaseAddress = VariableStoreBase & (~EFI_PAGE_MASK);\r
- Length = VariableStoreLength + (VariableStoreBase - BaseAddress);\r
- Length = (Length + EFI_PAGE_SIZE - 1) & (~EFI_PAGE_MASK);\r
-\r
- Status = gDS->GetMemorySpaceDescriptor (BaseAddress, &GcdDescriptor);\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_WARN, "Variable driver failed to get flash memory attribute.\n"));\r
- } else {\r
- Status = gDS->SetMemorySpaceAttributes (\r
- BaseAddress,\r
- Length,\r
- GcdDescriptor.Attributes | EFI_MEMORY_RUNTIME\r
- );\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_WARN, "Variable driver failed to add EFI_MEMORY_RUNTIME attribute to Flash.\n"));\r
- }\r
- }\r
-\r
- Status = VariableWriteServiceInitialize ();\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_ERROR, "Variable write service initialization failed. Status = %r\n", Status));\r
- }\r
-\r
- //\r
- // Install the Variable Write Architectural protocol.\r
- //\r
- Status = gBS->InstallProtocolInterface (\r
- &mHandle,\r
- &gEfiVariableWriteArchProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Close the notify event to avoid install gEfiVariableWriteArchProtocolGuid again.\r
- //\r
- gBS->CloseEvent (Event);\r
-\r
-}\r
-\r
-\r
-/**\r
- Variable Driver main entry point. The Variable driver places the 4 EFI\r
- runtime services in the EFI System Table and installs arch protocols\r
- for variable read and write services being available. It also registers\r
- a notification function for an EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image.\r
- @param[in] SystemTable A pointer to the EFI System Table.\r
-\r
- @retval EFI_SUCCESS Variable service successfully initialized.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_EVENT ReadyToBootEvent;\r
- EFI_EVENT EndOfDxeEvent;\r
-\r
- Status = VariableCommonInitialize ();\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mHandle,\r
- &gEdkiiVariableLockProtocolGuid,\r
- &mVariableLock,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mHandle,\r
- &gEdkiiVarCheckProtocolGuid,\r
- &mVarCheck,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- SystemTable->RuntimeServices->GetVariable = VariableServiceGetVariable;\r
- SystemTable->RuntimeServices->GetNextVariableName = VariableServiceGetNextVariableName;\r
- SystemTable->RuntimeServices->SetVariable = VariableServiceSetVariable;\r
- SystemTable->RuntimeServices->QueryVariableInfo = VariableServiceQueryVariableInfo;\r
-\r
- //\r
- // Now install the Variable Runtime Architectural protocol on a new handle.\r
- //\r
- Status = gBS->InstallProtocolInterface (\r
- &mHandle,\r
- &gEfiVariableArchProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Register FtwNotificationEvent () notify function.\r
- //\r
- EfiCreateProtocolNotifyEvent (\r
- &gEfiFaultTolerantWriteProtocolGuid,\r
- TPL_CALLBACK,\r
- FtwNotificationEvent,\r
- (VOID *)SystemTable,\r
- &mFtwRegistration\r
- );\r
-\r
- Status = gBS->CreateEventEx (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_NOTIFY,\r
- VariableClassAddressChangeEvent,\r
- NULL,\r
- &gEfiEventVirtualAddressChangeGuid,\r
- &mVirtualAddressChangeEvent\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Register the event handling function to reclaim variable for OS usage.\r
- //\r
- Status = EfiCreateEventReadyToBootEx (\r
- TPL_NOTIFY,\r
- OnReadyToBoot,\r
- NULL,\r
- &ReadyToBootEvent\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Register the event handling function to set the End Of DXE flag.\r
- //\r
- Status = gBS->CreateEventEx (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_NOTIFY,\r
- OnEndOfDxe,\r
- NULL,\r
- &gEfiEndOfDxeEventGroupGuid,\r
- &EndOfDxeEvent\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
+++ /dev/null
-## @file\r
-# Provides authenticated variable service\r
-#\r
-# This module installs variable arch protocol and variable write arch protocol to provide \r
-# variable services: SetVariable, GetVariable, GetNextVariableName and QueryVariableInfo.\r
-#\r
-# Caution: This module requires additional review when modified.\r
-# This driver will have external input - variable data.\r
-# This external input must be validated carefully to avoid security issues such as \r
-# buffer overflow or integer overflow.\r
-#\r
-# Copyright (c) 2009 - 2015, Intel Corporation. All rights reserved.<BR>\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-##\r
-\r
-[Defines]\r
- INF_VERSION = 0x00010005\r
- BASE_NAME = VariableAuthRuntimeDxe\r
- MODULE_UNI_FILE = VariableAuthRuntimeDxe.uni\r
- FILE_GUID = 2226F30F-3D5B-402d-9936-A97184EB4516\r
- MODULE_TYPE = DXE_RUNTIME_DRIVER\r
- VERSION_STRING = 1.0\r
- ENTRY_POINT = VariableServiceInitialize\r
-\r
-#\r
-# The following information is for reference only and not required by the build tools.\r
-#\r
-# VALID_ARCHITECTURES = IA32 X64 EBC\r
-#\r
-# VIRTUAL_ADDRESS_MAP_CALLBACK = VariableClassAddressChangeEvent\r
-#\r
-\r
-[Sources]\r
- Reclaim.c\r
- Variable.c\r
- VariableDxe.c\r
- Variable.h\r
- AuthService.c\r
- AuthService.h\r
- Measurement.c\r
- VarCheck.c\r
-\r
-[Packages]\r
- MdePkg/MdePkg.dec\r
- MdeModulePkg/MdeModulePkg.dec\r
- CryptoPkg/CryptoPkg.dec\r
- SecurityPkg/SecurityPkg.dec\r
-\r
-[LibraryClasses]\r
- MemoryAllocationLib\r
- BaseLib\r
- SynchronizationLib\r
- UefiLib\r
- UefiBootServicesTableLib\r
- BaseMemoryLib\r
- DebugLib\r
- UefiRuntimeLib\r
- DxeServicesTableLib\r
- UefiDriverEntryPoint\r
- PcdLib\r
- BaseCryptLib\r
- PlatformSecureLib\r
- HobLib\r
- TpmMeasurementLib\r
- DevicePathLib\r
-\r
-[Protocols]\r
- gEfiFirmwareVolumeBlockProtocolGuid ## CONSUMES\r
- ## CONSUMES\r
- ## NOTIFY\r
- gEfiFaultTolerantWriteProtocolGuid\r
- gEfiVariableWriteArchProtocolGuid ## PRODUCES\r
- gEfiVariableArchProtocolGuid ## PRODUCES\r
- gEdkiiVariableLockProtocolGuid ## PRODUCES\r
- gEdkiiVarCheckProtocolGuid ## PRODUCES\r
-\r
-\r
-[Guids]\r
- ## PRODUCES ## GUID # Variable store header\r
- ## CONSUMES ## GUID # Variable store header\r
- ## SOMETIMES_CONSUMES ## HOB\r
- ## SOMETIMES_PRODUCES ## SystemTable\r
- gEfiAuthenticatedVariableGuid\r
- \r
- ## SOMETIMES_CONSUMES ## Variable:L"PlatformLang"\r
- ## SOMETIMES_PRODUCES ## Variable:L"PlatformLang"\r
- ## SOMETIMES_CONSUMES ## Variable:L"Lang"\r
- ## SOMETIMES_PRODUCES ## Variable:L"Lang"\r
- ## SOMETIMES_CONSUMES ## Variable:L"HwErrRecSupport"\r
- ## CONSUMES ## Variable:L"SetupMode"\r
- ## PRODUCES ## Variable:L"SetupMode"\r
- ## SOMETIMES_CONSUMES ## Variable:L"PK"\r
- ## SOMETIMES_CONSUMES ## Variable:L"KEK"\r
- ## CONSUMES ## Variable:L"SecureBoot"\r
- ## PRODUCES ## Variable:L"SecureBoot"\r
- ## CONSUMES ## Variable:L"SignatureSupport"\r
- ## PRODUCES ## Variable:L"SignatureSupport" \r
- ## PRODUCES ## Variable:L"VendorKeys"\r
- gEfiGlobalVariableGuid\r
- \r
- ## SOMETIMES_CONSUMES ## Variable:L"DB"\r
- ## SOMETIMES_CONSUMES ## Variable:L"DBX"\r
- gEfiImageSecurityDatabaseGuid\r
- \r
- ## CONSUMES ## Variable:L"SecureBootEnable"\r
- ## PRODUCES ## Variable:L"SecureBootEnable"\r
- gEfiSecureBootEnableDisableGuid\r
- \r
- ## CONSUMES ## Variable:L"CustomMode"\r
- ## PRODUCES ## Variable:L"CustomMode"\r
- gEfiCustomModeEnableGuid\r
- \r
- ## CONSUMES ## Variable:L"certdb"\r
- ## PRODUCES ## Variable:L"certdb"\r
- gEfiCertDbGuid\r
- \r
- ## CONSUMES ## Variable:L"VendorKeysNv"\r
- ## PRODUCES ## Variable:L"VendorKeysNv"\r
- gEfiVendorKeysNvGuid\r
-\r
- gEfiEndOfDxeEventGroupGuid ## CONSUMES ## Event\r
- gEfiEventVirtualAddressChangeGuid ## CONSUMES ## Event\r
- gEfiCertTypeRsa2048Sha256Guid ## SOMETIMES_CONSUMES ## GUID # Unique ID for the type of the certificate.\r
- gEfiCertPkcs7Guid ## SOMETIMES_CONSUMES ## GUID # Unique ID for the type of the certificate.\r
- gEfiCertX509Guid ## SOMETIMES_CONSUMES ## GUID # Unique ID for the type of the signature.\r
- gEfiSystemNvDataFvGuid ## CONSUMES ## GUID\r
- gEfiHardwareErrorVariableGuid ## SOMETIMES_CONSUMES ## Variable:L"HwErrRec####"\r
- gEdkiiFaultTolerantWriteGuid ## SOMETIMES_CONSUMES ## HOB\r
- gEdkiiVarErrorFlagGuid ## CONSUMES ## GUID\r
-\r
-[Pcd]\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase ## SOMETIMES_CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64 ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxUserNvVariableSpaceSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdBoottimeReservedNvVariableSpaceSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdReclaimVariableSpaceAtEndOfDxe ## CONSUMES\r
-\r
-[FeaturePcd]\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics ## CONSUMES # statistic the information of variable.\r
- gEfiMdePkgTokenSpaceGuid.PcdUefiVariableDefaultLangDeprecate ## CONSUMES # Auto update PlatformLang/Lang\r
-\r
-[Depex]\r
- TRUE\r
-\r
-[UserExtensions.TianoCore."ExtraFiles"]\r
- VariableRuntimeDxeExtra.uni\r
+++ /dev/null
-/** @file\r
- The sample implementation for SMM variable protocol. And this driver \r
- implements an SMI handler to communicate with the DXE runtime driver \r
- to provide variable services.\r
-\r
- Caution: This module requires additional review when modified.\r
- This driver will have external input - variable data and communicate buffer in SMM mode.\r
- This external input must be validated carefully to avoid security issue like\r
- buffer overflow, integer overflow.\r
-\r
- SmmVariableHandler() will receive untrusted input and do basic validation.\r
-\r
- Each sub function VariableServiceGetVariable(), VariableServiceGetNextVariableName(), \r
- VariableServiceSetVariable(), VariableServiceQueryVariableInfo(), ReclaimForOS(), \r
- SmmVariableGetStatistics() should also do validation based on its own knowledge.\r
-\r
-Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include <Protocol/SmmVariable.h>\r
-#include <Protocol/SmmFirmwareVolumeBlock.h>\r
-#include <Protocol/SmmFaultTolerantWrite.h>\r
-#include <Protocol/SmmEndOfDxe.h>\r
-#include <Protocol/SmmVarCheck.h>\r
-\r
-#include <Library/SmmServicesTableLib.h>\r
-#include <Library/SmmMemLib.h>\r
-\r
-#include <Guid/AuthenticatedVariableFormat.h>\r
-#include <Guid/SmmVariableCommon.h>\r
-#include "Variable.h"\r
-\r
-extern VARIABLE_INFO_ENTRY *gVariableInfo;\r
-EFI_HANDLE mSmmVariableHandle = NULL;\r
-EFI_HANDLE mVariableHandle = NULL;\r
-BOOLEAN mAtRuntime = FALSE;\r
-EFI_GUID mZeroGuid = {0, 0, 0, {0, 0, 0, 0, 0, 0, 0, 0}};\r
-UINT8 *mVariableBufferPayload = NULL;\r
-UINTN mVariableBufferPayloadSize;\r
-extern BOOLEAN mEndOfDxe;\r
-extern BOOLEAN mEnableLocking;\r
-\r
-/**\r
- SecureBoot Hook for SetVariable.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SecureBootHook (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- return ;\r
-}\r
-\r
-/**\r
-\r
- This code sets variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- @param VariableName Name of Variable to be found.\r
- @param VendorGuid Variable vendor GUID.\r
- @param Attributes Attribute value of the variable found\r
- @param DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param Data Data pointer.\r
-\r
- @return EFI_INVALID_PARAMETER Invalid parameter.\r
- @return EFI_SUCCESS Set successfully.\r
- @return EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r
- @return EFI_NOT_FOUND Not found.\r
- @return EFI_WRITE_PROTECTED Variable is read-only.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SmmVariableSetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Disable write protection when the calling SetVariable() through EFI_SMM_VARIABLE_PROTOCOL.\r
- //\r
- mEnableLocking = FALSE;\r
- Status = VariableServiceSetVariable (\r
- VariableName,\r
- VendorGuid,\r
- Attributes,\r
- DataSize,\r
- Data\r
- );\r
- mEnableLocking = TRUE;\r
- return Status;\r
-}\r
-\r
-EFI_SMM_VARIABLE_PROTOCOL gSmmVariable = {\r
- VariableServiceGetVariable,\r
- VariableServiceGetNextVariableName,\r
- SmmVariableSetVariable,\r
- VariableServiceQueryVariableInfo\r
-};\r
-\r
-EDKII_SMM_VAR_CHECK_PROTOCOL mSmmVarCheck = { VarCheckRegisterSetVariableCheckHandler,\r
- VarCheckVariablePropertySet,\r
- VarCheckVariablePropertyGet };\r
-\r
-/**\r
- Return TRUE if ExitBootServices () has been called.\r
- \r
- @retval TRUE If ExitBootServices () has been called.\r
-**/\r
-BOOLEAN\r
-AtRuntime (\r
- VOID\r
- )\r
-{\r
- return mAtRuntime;\r
-}\r
-\r
-/**\r
- Initializes a basic mutual exclusion lock.\r
-\r
- This function initializes a basic mutual exclusion lock to the released state \r
- and returns the lock. Each lock provides mutual exclusion access at its task \r
- priority level. Since there is no preemption or multiprocessor support in EFI,\r
- acquiring the lock only consists of raising to the locks TPL.\r
- If Lock is NULL, then ASSERT().\r
- If Priority is not a valid TPL value, then ASSERT().\r
-\r
- @param Lock A pointer to the lock data structure to initialize.\r
- @param Priority EFI TPL is associated with the lock.\r
-\r
- @return The lock.\r
-\r
-**/\r
-EFI_LOCK *\r
-InitializeLock (\r
- IN OUT EFI_LOCK *Lock,\r
- IN EFI_TPL Priority\r
- )\r
-{\r
- return Lock;\r
-}\r
-\r
-/**\r
- Acquires lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function that will be removed when\r
- EfiAcquireLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiAcquireLock() at boot time, and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to acquire.\r
-\r
-**/\r
-VOID\r
-AcquireLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
-\r
-}\r
-\r
-\r
-/**\r
- Releases lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function which will be removed when\r
- EfiReleaseLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiReleaseLock() at boot time and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to release.\r
-\r
-**/\r
-VOID\r
-ReleaseLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
-\r
-}\r
-\r
-/**\r
- Retrive the SMM Fault Tolerent Write protocol interface.\r
-\r
- @param[out] FtwProtocol The interface of SMM Ftw protocol\r
-\r
- @retval EFI_SUCCESS The SMM FTW protocol instance was found and returned in FtwProtocol.\r
- @retval EFI_NOT_FOUND The SMM FTW protocol instance was not found.\r
- @retval EFI_INVALID_PARAMETER SarProtocol is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFtwProtocol (\r
- OUT VOID **FtwProtocol\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- //\r
- // Locate Smm Fault Tolerent Write protocol\r
- //\r
- Status = gSmst->SmmLocateProtocol (\r
- &gEfiSmmFaultTolerantWriteProtocolGuid, \r
- NULL, \r
- FtwProtocol\r
- );\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Retrive the SMM FVB protocol interface by HANDLE.\r
-\r
- @param[in] FvBlockHandle The handle of SMM FVB protocol that provides services for\r
- reading, writing, and erasing the target block.\r
- @param[out] FvBlock The interface of SMM FVB protocol\r
-\r
- @retval EFI_SUCCESS The interface information for the specified protocol was returned.\r
- @retval EFI_UNSUPPORTED The device does not support the SMM FVB protocol.\r
- @retval EFI_INVALID_PARAMETER FvBlockHandle is not a valid EFI_HANDLE or FvBlock is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFvbByHandle (\r
- IN EFI_HANDLE FvBlockHandle,\r
- OUT EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL **FvBlock\r
- )\r
-{\r
- //\r
- // To get the SMM FVB protocol interface on the handle\r
- //\r
- return gSmst->SmmHandleProtocol (\r
- FvBlockHandle,\r
- &gEfiSmmFirmwareVolumeBlockProtocolGuid,\r
- (VOID **) FvBlock\r
- );\r
-}\r
-\r
-\r
-/**\r
- Function returns an array of handles that support the SMM FVB protocol\r
- in a buffer allocated from pool. \r
-\r
- @param[out] NumberHandles The number of handles returned in Buffer.\r
- @param[out] Buffer A pointer to the buffer to return the requested\r
- array of handles that support SMM FVB protocol.\r
-\r
- @retval EFI_SUCCESS The array of handles was returned in Buffer, and the number of\r
- handles in Buffer was returned in NumberHandles.\r
- @retval EFI_NOT_FOUND No SMM FVB handle was found.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough pool memory to store the matching results.\r
- @retval EFI_INVALID_PARAMETER NumberHandles is NULL or Buffer is NULL.\r
-\r
-**/\r
-EFI_STATUS\r
-GetFvbCountAndBuffer (\r
- OUT UINTN *NumberHandles,\r
- OUT EFI_HANDLE **Buffer\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN BufferSize;\r
-\r
- if ((NumberHandles == NULL) || (Buffer == NULL)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- BufferSize = 0;\r
- *NumberHandles = 0;\r
- *Buffer = NULL;\r
- Status = gSmst->SmmLocateHandle (\r
- ByProtocol,\r
- &gEfiSmmFirmwareVolumeBlockProtocolGuid,\r
- NULL,\r
- &BufferSize,\r
- *Buffer\r
- );\r
- if (EFI_ERROR(Status) && Status != EFI_BUFFER_TOO_SMALL) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- *Buffer = AllocatePool (BufferSize);\r
- if (*Buffer == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- Status = gSmst->SmmLocateHandle (\r
- ByProtocol,\r
- &gEfiSmmFirmwareVolumeBlockProtocolGuid,\r
- NULL,\r
- &BufferSize,\r
- *Buffer\r
- );\r
-\r
- *NumberHandles = BufferSize / sizeof(EFI_HANDLE);\r
- if (EFI_ERROR(Status)) {\r
- *NumberHandles = 0;\r
- FreePool (*Buffer);\r
- *Buffer = NULL;\r
- }\r
-\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Get the variable statistics information from the information buffer pointed by gVariableInfo.\r
-\r
- Caution: This function may be invoked at SMM runtime.\r
- InfoEntry and InfoSize are external input. Care must be taken to make sure not security issue at runtime.\r
-\r
- @param[in, out] InfoEntry A pointer to the buffer of variable information entry.\r
- On input, point to the variable information returned last time. if \r
- InfoEntry->VendorGuid is zero, return the first information.\r
- On output, point to the next variable information.\r
- @param[in, out] InfoSize On input, the size of the variable information buffer.\r
- On output, the returned variable information size.\r
-\r
- @retval EFI_SUCCESS The variable information is found and returned successfully.\r
- @retval EFI_UNSUPPORTED No variable inoformation exists in variable driver. The \r
- PcdVariableCollectStatistics should be set TRUE to support it.\r
- @retval EFI_BUFFER_TOO_SMALL The buffer is too small to hold the next variable information.\r
- @retval EFI_INVALID_PARAMETER Input parameter is invalid.\r
-\r
-**/\r
-EFI_STATUS\r
-SmmVariableGetStatistics (\r
- IN OUT VARIABLE_INFO_ENTRY *InfoEntry,\r
- IN OUT UINTN *InfoSize\r
- )\r
-{\r
- VARIABLE_INFO_ENTRY *VariableInfo;\r
- UINTN NameLength;\r
- UINTN StatisticsInfoSize;\r
- CHAR16 *InfoName;\r
- EFI_GUID VendorGuid;\r
- \r
- if (InfoEntry == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
- \r
- VariableInfo = gVariableInfo; \r
- if (VariableInfo == NULL) {\r
- return EFI_UNSUPPORTED;\r
- }\r
-\r
- StatisticsInfoSize = sizeof (VARIABLE_INFO_ENTRY) + StrSize (VariableInfo->Name);\r
- if (*InfoSize < StatisticsInfoSize) {\r
- *InfoSize = StatisticsInfoSize;\r
- return EFI_BUFFER_TOO_SMALL;\r
- }\r
- InfoName = (CHAR16 *)(InfoEntry + 1);\r
-\r
- CopyGuid (&VendorGuid, &InfoEntry->VendorGuid);\r
-\r
- if (CompareGuid (&VendorGuid, &mZeroGuid)) {\r
- //\r
- // Return the first variable info\r
- //\r
- CopyMem (InfoEntry, VariableInfo, sizeof (VARIABLE_INFO_ENTRY));\r
- CopyMem (InfoName, VariableInfo->Name, StrSize (VariableInfo->Name));\r
- *InfoSize = StatisticsInfoSize;\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Get the next variable info\r
- //\r
- while (VariableInfo != NULL) {\r
- if (CompareGuid (&VariableInfo->VendorGuid, &VendorGuid)) {\r
- NameLength = StrSize (VariableInfo->Name);\r
- if (NameLength == StrSize (InfoName)) {\r
- if (CompareMem (VariableInfo->Name, InfoName, NameLength) == 0) {\r
- //\r
- // Find the match one\r
- //\r
- VariableInfo = VariableInfo->Next;\r
- break;\r
- }\r
- }\r
- }\r
- VariableInfo = VariableInfo->Next;\r
- };\r
- \r
- if (VariableInfo == NULL) {\r
- *InfoSize = 0;\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Output the new variable info\r
- //\r
- StatisticsInfoSize = sizeof (VARIABLE_INFO_ENTRY) + StrSize (VariableInfo->Name);\r
- if (*InfoSize < StatisticsInfoSize) {\r
- *InfoSize = StatisticsInfoSize;\r
- return EFI_BUFFER_TOO_SMALL;\r
- }\r
-\r
- CopyMem (InfoEntry, VariableInfo, sizeof (VARIABLE_INFO_ENTRY));\r
- CopyMem (InfoName, VariableInfo->Name, StrSize (VariableInfo->Name));\r
- *InfoSize = StatisticsInfoSize;\r
- \r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Communication service SMI Handler entry.\r
-\r
- This SMI handler provides services for the variable wrapper driver.\r
-\r
- Caution: This function may receive untrusted input.\r
- This variable data and communicate buffer are external input, so this function will do basic validation.\r
- Each sub function VariableServiceGetVariable(), VariableServiceGetNextVariableName(), \r
- VariableServiceSetVariable(), VariableServiceQueryVariableInfo(), ReclaimForOS(), \r
- SmmVariableGetStatistics() should also do validation based on its own knowledge.\r
-\r
- @param[in] DispatchHandle The unique handle assigned to this handler by SmiHandlerRegister().\r
- @param[in] RegisterContext Points to an optional handler context which was specified when the\r
- handler was registered.\r
- @param[in, out] CommBuffer A pointer to a collection of data in memory that will\r
- be conveyed from a non-SMM environment into an SMM environment.\r
- @param[in, out] CommBufferSize The size of the CommBuffer.\r
-\r
- @retval EFI_SUCCESS The interrupt was handled and quiesced. No other handlers \r
- should still be called.\r
- @retval EFI_WARN_INTERRUPT_SOURCE_QUIESCED The interrupt has been quiesced but other handlers should \r
- still be called.\r
- @retval EFI_WARN_INTERRUPT_SOURCE_PENDING The interrupt is still pending and other handlers should still \r
- be called.\r
- @retval EFI_INTERRUPT_PENDING The interrupt could not be quiesced.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SmmVariableHandler (\r
- IN EFI_HANDLE DispatchHandle,\r
- IN CONST VOID *RegisterContext,\r
- IN OUT VOID *CommBuffer,\r
- IN OUT UINTN *CommBufferSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- SMM_VARIABLE_COMMUNICATE_HEADER *SmmVariableFunctionHeader;\r
- SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE *SmmVariableHeader;\r
- SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME *GetNextVariableName;\r
- SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO *QueryVariableInfo;\r
- VARIABLE_INFO_ENTRY *VariableInfo;\r
- SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE *VariableToLock;\r
- SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY *CommVariableProperty;\r
- UINTN InfoSize;\r
- UINTN NameBufferSize;\r
- UINTN CommBufferPayloadSize;\r
- UINTN TempCommBufferSize;\r
-\r
- //\r
- // If input is invalid, stop processing this SMI\r
- //\r
- if (CommBuffer == NULL || CommBufferSize == NULL) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- TempCommBufferSize = *CommBufferSize;\r
-\r
- if (TempCommBufferSize < SMM_VARIABLE_COMMUNICATE_HEADER_SIZE) {\r
- DEBUG ((EFI_D_ERROR, "SmmVariableHandler: SMM communication buffer size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- CommBufferPayloadSize = TempCommBufferSize - SMM_VARIABLE_COMMUNICATE_HEADER_SIZE;\r
- if (CommBufferPayloadSize > mVariableBufferPayloadSize) {\r
- DEBUG ((EFI_D_ERROR, "SmmVariableHandler: SMM communication buffer payload size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
-\r
- if (!SmmIsBufferOutsideSmmValid ((UINTN)CommBuffer, TempCommBufferSize)) {\r
- DEBUG ((EFI_D_ERROR, "SmmVariableHandler: SMM communication buffer in SMRAM or overflow!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- \r
- SmmVariableFunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *)CommBuffer;\r
- \r
- switch (SmmVariableFunctionHeader->Function) {\r
- case SMM_VARIABLE_FUNCTION_GET_VARIABLE:\r
- if (CommBufferPayloadSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)) {\r
- DEBUG ((EFI_D_ERROR, "GetVariable: SMM communication buffer size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Copy the input communicate buffer payload to pre-allocated SMM variable buffer payload.\r
- //\r
- CopyMem (mVariableBufferPayload, SmmVariableFunctionHeader->Data, CommBufferPayloadSize);\r
- SmmVariableHeader = (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE *) mVariableBufferPayload;\r
- if (((UINTN)(~0) - SmmVariableHeader->DataSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)) ||\r
- ((UINTN)(~0) - SmmVariableHeader->NameSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) + SmmVariableHeader->DataSize)) {\r
- //\r
- // Prevent InfoSize overflow happen\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
- InfoSize = OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) \r
- + SmmVariableHeader->DataSize + SmmVariableHeader->NameSize;\r
-\r
- //\r
- // SMRAM range check already covered before\r
- //\r
- if (InfoSize > CommBufferPayloadSize) {\r
- DEBUG ((EFI_D_ERROR, "GetVariable: Data size exceed communication buffer size limit!\n"));\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- if (SmmVariableHeader->NameSize < sizeof (CHAR16) || SmmVariableHeader->Name[SmmVariableHeader->NameSize/sizeof (CHAR16) - 1] != L'\0') {\r
- //\r
- // Make sure VariableName is A Null-terminated string.\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- Status = VariableServiceGetVariable (\r
- SmmVariableHeader->Name,\r
- &SmmVariableHeader->Guid,\r
- &SmmVariableHeader->Attributes,\r
- &SmmVariableHeader->DataSize,\r
- (UINT8 *)SmmVariableHeader->Name + SmmVariableHeader->NameSize\r
- );\r
- CopyMem (SmmVariableFunctionHeader->Data, mVariableBufferPayload, CommBufferPayloadSize);\r
- break;\r
- \r
- case SMM_VARIABLE_FUNCTION_GET_NEXT_VARIABLE_NAME:\r
- if (CommBufferPayloadSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name)) {\r
- DEBUG ((EFI_D_ERROR, "GetNextVariableName: SMM communication buffer size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Copy the input communicate buffer payload to pre-allocated SMM variable buffer payload.\r
- //\r
- CopyMem (mVariableBufferPayload, SmmVariableFunctionHeader->Data, CommBufferPayloadSize);\r
- GetNextVariableName = (SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME *) mVariableBufferPayload;\r
- if ((UINTN)(~0) - GetNextVariableName->NameSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name)) {\r
- //\r
- // Prevent InfoSize overflow happen\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
- InfoSize = OFFSET_OF(SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name) + GetNextVariableName->NameSize;\r
-\r
- //\r
- // SMRAM range check already covered before\r
- //\r
- if (InfoSize > CommBufferPayloadSize) {\r
- DEBUG ((EFI_D_ERROR, "GetNextVariableName: Data size exceed communication buffer size limit!\n"));\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- NameBufferSize = CommBufferPayloadSize - OFFSET_OF(SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name);\r
- if (NameBufferSize < sizeof (CHAR16) || GetNextVariableName->Name[NameBufferSize/sizeof (CHAR16) - 1] != L'\0') {\r
- //\r
- // Make sure input VariableName is A Null-terminated string.\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- Status = VariableServiceGetNextVariableName (\r
- &GetNextVariableName->NameSize,\r
- GetNextVariableName->Name,\r
- &GetNextVariableName->Guid\r
- );\r
- CopyMem (SmmVariableFunctionHeader->Data, mVariableBufferPayload, CommBufferPayloadSize);\r
- break;\r
- \r
- case SMM_VARIABLE_FUNCTION_SET_VARIABLE:\r
- if (CommBufferPayloadSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)) {\r
- DEBUG ((EFI_D_ERROR, "SetVariable: SMM communication buffer size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Copy the input communicate buffer payload to pre-allocated SMM variable buffer payload.\r
- //\r
- CopyMem (mVariableBufferPayload, SmmVariableFunctionHeader->Data, CommBufferPayloadSize);\r
- SmmVariableHeader = (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE *) mVariableBufferPayload;\r
- if (((UINTN)(~0) - SmmVariableHeader->DataSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)) ||\r
- ((UINTN)(~0) - SmmVariableHeader->NameSize < OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) + SmmVariableHeader->DataSize)) {\r
- //\r
- // Prevent InfoSize overflow happen\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
- InfoSize = OFFSET_OF(SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)\r
- + SmmVariableHeader->DataSize + SmmVariableHeader->NameSize;\r
-\r
- //\r
- // SMRAM range check already covered before\r
- // Data buffer should not contain SMM range\r
- //\r
- if (InfoSize > CommBufferPayloadSize) {\r
- DEBUG ((EFI_D_ERROR, "SetVariable: Data size exceed communication buffer size limit!\n"));\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- if (SmmVariableHeader->NameSize < sizeof (CHAR16) || SmmVariableHeader->Name[SmmVariableHeader->NameSize/sizeof (CHAR16) - 1] != L'\0') {\r
- //\r
- // Make sure VariableName is A Null-terminated string.\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- Status = VariableServiceSetVariable (\r
- SmmVariableHeader->Name,\r
- &SmmVariableHeader->Guid,\r
- SmmVariableHeader->Attributes,\r
- SmmVariableHeader->DataSize,\r
- (UINT8 *)SmmVariableHeader->Name + SmmVariableHeader->NameSize\r
- );\r
- break;\r
- \r
- case SMM_VARIABLE_FUNCTION_QUERY_VARIABLE_INFO:\r
- if (CommBufferPayloadSize < sizeof (SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO)) {\r
- DEBUG ((EFI_D_ERROR, "QueryVariableInfo: SMM communication buffer size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- QueryVariableInfo = (SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO *) SmmVariableFunctionHeader->Data;\r
- \r
- Status = VariableServiceQueryVariableInfo (\r
- QueryVariableInfo->Attributes,\r
- &QueryVariableInfo->MaximumVariableStorageSize,\r
- &QueryVariableInfo->RemainingVariableStorageSize,\r
- &QueryVariableInfo->MaximumVariableSize\r
- );\r
- break;\r
-\r
- case SMM_VARIABLE_FUNCTION_READY_TO_BOOT:\r
- mEndOfDxe = TRUE;\r
- //\r
- // The initialization for variable quota.\r
- //\r
- InitializeVariableQuota ();\r
- if (AtRuntime()) {\r
- Status = EFI_UNSUPPORTED;\r
- break;\r
- }\r
- ReclaimForOS ();\r
- Status = EFI_SUCCESS;\r
- break;\r
- \r
- case SMM_VARIABLE_FUNCTION_EXIT_BOOT_SERVICE:\r
- mAtRuntime = TRUE;\r
- Status = EFI_SUCCESS;\r
- break;\r
-\r
- case SMM_VARIABLE_FUNCTION_GET_STATISTICS:\r
- VariableInfo = (VARIABLE_INFO_ENTRY *) SmmVariableFunctionHeader->Data;\r
- InfoSize = TempCommBufferSize - SMM_VARIABLE_COMMUNICATE_HEADER_SIZE;\r
-\r
- //\r
- // Do not need to check SmmVariableFunctionHeader->Data in SMRAM here. \r
- // It is covered by previous CommBuffer check \r
- //\r
- \r
- if (!SmmIsBufferOutsideSmmValid ((EFI_PHYSICAL_ADDRESS)(UINTN)CommBufferSize, sizeof(UINTN))) {\r
- DEBUG ((EFI_D_ERROR, "GetStatistics: SMM communication buffer in SMRAM!\n"));\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- } \r
-\r
- Status = SmmVariableGetStatistics (VariableInfo, &InfoSize);\r
- *CommBufferSize = InfoSize + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE;\r
- break;\r
-\r
- case SMM_VARIABLE_FUNCTION_LOCK_VARIABLE:\r
- if (mEndOfDxe) {\r
- Status = EFI_ACCESS_DENIED;\r
- } else {\r
- VariableToLock = (SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE *) SmmVariableFunctionHeader->Data;\r
- Status = VariableLockRequestToLock (\r
- NULL,\r
- VariableToLock->Name,\r
- &VariableToLock->Guid\r
- );\r
- }\r
- break;\r
- case SMM_VARIABLE_FUNCTION_VAR_CHECK_VARIABLE_PROPERTY_SET:\r
- if (mEndOfDxe) {\r
- Status = EFI_ACCESS_DENIED;\r
- } else {\r
- CommVariableProperty = (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY *) SmmVariableFunctionHeader->Data;\r
- Status = VarCheckVariablePropertySet (\r
- CommVariableProperty->Name,\r
- &CommVariableProperty->Guid,\r
- &CommVariableProperty->VariableProperty\r
- );\r
- }\r
- break;\r
- case SMM_VARIABLE_FUNCTION_VAR_CHECK_VARIABLE_PROPERTY_GET:\r
- if (CommBufferPayloadSize < OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name)) {\r
- DEBUG ((EFI_D_ERROR, "VarCheckVariablePropertyGet: SMM communication buffer size invalid!\n"));\r
- return EFI_SUCCESS;\r
- }\r
- //\r
- // Copy the input communicate buffer payload to pre-allocated SMM variable buffer payload.\r
- //\r
- CopyMem (mVariableBufferPayload, SmmVariableFunctionHeader->Data, CommBufferPayloadSize);\r
- CommVariableProperty = (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY *) mVariableBufferPayload;\r
- if ((UINTN) (~0) - CommVariableProperty->NameSize < OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name)) {\r
- //\r
- // Prevent InfoSize overflow happen\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
- InfoSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) + CommVariableProperty->NameSize;\r
-\r
- //\r
- // SMRAM range check already covered before\r
- //\r
- if (InfoSize > CommBufferPayloadSize) {\r
- DEBUG ((EFI_D_ERROR, "VarCheckVariablePropertyGet: Data size exceed communication buffer size limit!\n"));\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- if (CommVariableProperty->NameSize < sizeof (CHAR16) || CommVariableProperty->Name[CommVariableProperty->NameSize/sizeof (CHAR16) - 1] != L'\0') {\r
- //\r
- // Make sure VariableName is A Null-terminated string.\r
- //\r
- Status = EFI_ACCESS_DENIED;\r
- goto EXIT;\r
- }\r
-\r
- Status = VarCheckVariablePropertyGet (\r
- CommVariableProperty->Name,\r
- &CommVariableProperty->Guid,\r
- &CommVariableProperty->VariableProperty\r
- );\r
- CopyMem (SmmVariableFunctionHeader->Data, mVariableBufferPayload, CommBufferPayloadSize);\r
- break;\r
-\r
- default:\r
- Status = EFI_UNSUPPORTED;\r
- }\r
-\r
-EXIT:\r
-\r
- SmmVariableFunctionHeader->ReturnStatus = Status;\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- SMM END_OF_DXE protocol notification event handler.\r
-\r
- @param Protocol Points to the protocol's unique identifier\r
- @param Interface Points to the interface instance\r
- @param Handle The handle on which the interface was installed\r
-\r
- @retval EFI_SUCCESS SmmEndOfDxeCallback runs successfully\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-SmmEndOfDxeCallback (\r
- IN CONST EFI_GUID *Protocol,\r
- IN VOID *Interface,\r
- IN EFI_HANDLE Handle\r
- )\r
-{\r
- DEBUG ((EFI_D_INFO, "[Variable]END_OF_DXE is signaled\n"));\r
- mEndOfDxe = TRUE;\r
- //\r
- // The initialization for variable quota.\r
- //\r
- InitializeVariableQuota ();\r
- if (PcdGetBool (PcdReclaimVariableSpaceAtEndOfDxe)) {\r
- ReclaimForOS ();\r
- }\r
- return EFI_SUCCESS;\r
-}\r
-\r
-/**\r
- SMM Fault Tolerant Write protocol notification event handler.\r
-\r
- Non-Volatile variable write may needs FTW protocol to reclaim when \r
- writting variable.\r
- \r
- @param Protocol Points to the protocol's unique identifier\r
- @param Interface Points to the interface instance\r
- @param Handle The handle on which the interface was installed\r
-\r
- @retval EFI_SUCCESS SmmEventCallback runs successfully\r
- @retval EFI_NOT_FOUND The Fvb protocol for variable is not found.\r
- \r
- **/\r
-EFI_STATUS\r
-EFIAPI\r
-SmmFtwNotificationEvent (\r
- IN CONST EFI_GUID *Protocol,\r
- IN VOID *Interface,\r
- IN EFI_HANDLE Handle\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_SMM_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvbProtocol;\r
- EFI_SMM_FAULT_TOLERANT_WRITE_PROTOCOL *FtwProtocol;\r
- EFI_PHYSICAL_ADDRESS NvStorageVariableBase;\r
- UINTN FtwMaxBlockSize;\r
- \r
- if (mVariableModuleGlobal->FvbInstance != NULL) {\r
- return EFI_SUCCESS;\r
- }\r
-\r
- //\r
- // Ensure SMM FTW protocol is installed.\r
- //\r
- Status = GetFtwProtocol ((VOID **)&FtwProtocol);\r
- if (EFI_ERROR (Status)) {\r
- return Status;\r
- }\r
-\r
- Status = FtwProtocol->GetMaxBlockSize (FtwProtocol, &FtwMaxBlockSize);\r
- if (!EFI_ERROR (Status)) {\r
- ASSERT (PcdGet32 (PcdFlashNvStorageVariableSize) <= FtwMaxBlockSize);\r
- }\r
-\r
- //\r
- // Find the proper FVB protocol for variable.\r
- //\r
- NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet64 (PcdFlashNvStorageVariableBase64);\r
- if (NvStorageVariableBase == 0) {\r
- NvStorageVariableBase = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageVariableBase);\r
- }\r
- Status = GetFvbInfoByAddress (NvStorageVariableBase, NULL, &FvbProtocol);\r
- if (EFI_ERROR (Status)) {\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- mVariableModuleGlobal->FvbInstance = FvbProtocol;\r
- \r
- Status = VariableWriteServiceInitialize ();\r
- if (EFI_ERROR (Status)) {\r
- DEBUG ((DEBUG_ERROR, "Variable write service initialization failed. Status = %r\n", Status));\r
- }\r
- \r
- //\r
- // Notify the variable wrapper driver the variable write service is ready\r
- //\r
- Status = gBS->InstallProtocolInterface (\r
- &mSmmVariableHandle,\r
- &gSmmVariableWriteGuid,\r
- EFI_NATIVE_INTERFACE,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Variable Driver main entry point. The Variable driver places the 4 EFI\r
- runtime services in the EFI System Table and installs arch protocols \r
- for variable read and write services being available. It also registers\r
- a notification function for an EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
- @param[in] SystemTable A pointer to the EFI System Table.\r
- \r
- @retval EFI_SUCCESS Variable service successfully initialized.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableServiceInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- EFI_STATUS Status;\r
- EFI_HANDLE VariableHandle;\r
- VOID *SmmFtwRegistration;\r
- VOID *SmmEndOfDxeRegistration;\r
-\r
- //\r
- // Variable initialize.\r
- //\r
- Status = VariableCommonInitialize ();\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Install the Smm Variable Protocol on a new handle.\r
- //\r
- VariableHandle = NULL;\r
- Status = gSmst->SmmInstallProtocolInterface (\r
- &VariableHandle,\r
- &gEfiSmmVariableProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- &gSmmVariable\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- Status = gSmst->SmmInstallProtocolInterface (\r
- &VariableHandle,\r
- &gEdkiiSmmVarCheckProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- &mSmmVarCheck\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- mVariableBufferPayloadSize = MAX_NV_VARIABLE_SIZE +\r
- OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) - sizeof (VARIABLE_HEADER);\r
-\r
- Status = gSmst->SmmAllocatePool (\r
- EfiRuntimeServicesData,\r
- mVariableBufferPayloadSize,\r
- (VOID **)&mVariableBufferPayload\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- ///\r
- /// Register SMM variable SMI handler\r
- ///\r
- VariableHandle = NULL;\r
- Status = gSmst->SmiHandlerRegister (SmmVariableHandler, &gEfiSmmVariableProtocolGuid, &VariableHandle);\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- //\r
- // Notify the variable wrapper driver the variable service is ready\r
- //\r
- Status = SystemTable->BootServices->InstallProtocolInterface (\r
- &mVariableHandle,\r
- &gEfiSmmVariableProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- &gSmmVariable\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- //\r
- // Register EFI_SMM_END_OF_DXE_PROTOCOL_GUID notify function.\r
- //\r
- Status = gSmst->SmmRegisterProtocolNotify (\r
- &gEfiSmmEndOfDxeProtocolGuid,\r
- SmmEndOfDxeCallback,\r
- &SmmEndOfDxeRegistration\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- //\r
- // Register FtwNotificationEvent () notify function.\r
- // \r
- Status = gSmst->SmmRegisterProtocolNotify (\r
- &gEfiSmmFaultTolerantWriteProtocolGuid,\r
- SmmFtwNotificationEvent,\r
- &SmmFtwRegistration\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- SmmFtwNotificationEvent (NULL, NULL, NULL);\r
- \r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
+++ /dev/null
-## @file\r
-# Provides SMM authenticated variable service\r
-#\r
-# This module installs SMM variable protocol into SMM protocol database,\r
-# which can be used by SMM driver, and installs SMM variable protocol\r
-# into BS protocol database, which can be used to notify the SMM Runtime\r
-# Dxe driver that the SMM variable service is ready.\r
-# This module should be used with SMM Runtime DXE module together. The\r
-# SMM Runtime DXE module installs variable arch protocol and variable\r
-# write arch protocol based on SMM variable module.\r
-#\r
-# Caution: This module requires additional review when modified.\r
-# This driver will have external input - variable data and communicate buffer in SMM mode.\r
-# This external input must be validated carefully to avoid security issues such as \r
-# buffer overflow or integer overflow.\r
-# The whole SMM authentication variable design relies on the integrity of flash part and SMM.\r
-# which is assumed to be protected by platform. All variable code and metadata in flash/SMM Memory\r
-# may not be modified without authorization. If platform fails to protect these resources, \r
-# the authentication service provided in this driver will be broken, and the behavior is undefined.\r
-#\r
-# Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-##\r
-\r
-[Defines]\r
- INF_VERSION = 0x00010005\r
- BASE_NAME = VariableAuthSmm\r
- MODULE_UNI_FILE = VariableAuthSmm.uni\r
- FILE_GUID = D34BDC5E-968A-40f5-A48C-E594F45AE211\r
- MODULE_TYPE = DXE_SMM_DRIVER\r
- VERSION_STRING = 1.0\r
- PI_SPECIFICATION_VERSION = 0x0001000A\r
- ENTRY_POINT = VariableServiceInitialize\r
-\r
-#\r
-# The following information is for reference only and not required by the build tools.\r
-#\r
-# VALID_ARCHITECTURES = IA32 X64\r
-#\r
-\r
-\r
-[Sources]\r
- Reclaim.c\r
- Variable.c\r
- VariableSmm.c\r
- AuthService.c\r
- VarCheck.c\r
- Variable.h\r
- AuthService.h\r
-\r
-[Packages]\r
- MdePkg/MdePkg.dec\r
- MdeModulePkg/MdeModulePkg.dec\r
- CryptoPkg/CryptoPkg.dec\r
- SecurityPkg/SecurityPkg.dec\r
-\r
-[LibraryClasses]\r
- UefiDriverEntryPoint\r
- MemoryAllocationLib\r
- BaseLib\r
- SynchronizationLib\r
- UefiLib\r
- SmmServicesTableLib\r
- BaseMemoryLib\r
- DebugLib\r
- DxeServicesTableLib\r
- BaseCryptLib\r
- PlatformSecureLib\r
- HobLib\r
- PcdLib\r
- DevicePathLib\r
- SmmMemLib\r
-\r
-[Protocols]\r
- gEfiSmmFirmwareVolumeBlockProtocolGuid ## CONSUMES\r
- \r
- ## PRODUCES\r
- ## UNDEFINED # SmiHandlerRegister\r
- gEfiSmmVariableProtocolGuid\r
- \r
- ## CONSUMES\r
- ## NOTIFY \r
- gEfiSmmFaultTolerantWriteProtocolGuid\r
- gEfiSmmEndOfDxeProtocolGuid ## NOTIFY\r
- gEdkiiSmmVarCheckProtocolGuid ## PRODUCES\r
-\r
-[Guids]\r
- ## PRODUCES ## GUID # Variable store header\r
- ## CONSUMES ## GUID # Variable store header\r
- ## SOMETIMES_CONSUMES ## HOB\r
- gEfiAuthenticatedVariableGuid\r
- \r
- ## SOMETIMES_CONSUMES ## Variable:L"PlatformLang"\r
- ## SOMETIMES_PRODUCES ## Variable:L"PlatformLang"\r
- ## SOMETIMES_CONSUMES ## Variable:L"Lang"\r
- ## SOMETIMES_PRODUCES ## Variable:L"Lang"\r
- ## SOMETIMES_CONSUMES ## Variable:L"HwErrRecSupport"\r
- ## CONSUMES ## Variable:L"SetupMode"\r
- ## PRODUCES ## Variable:L"SetupMode"\r
- ## SOMETIMES_CONSUMES ## Variable:L"PK"\r
- ## SOMETIMES_CONSUMES ## Variable:L"KEK"\r
- ## CONSUMES ## Variable:L"SecureBoot"\r
- ## PRODUCES ## Variable:L"SecureBoot"\r
- ## CONSUMES ## Variable:L"SignatureSupport"\r
- ## PRODUCES ## Variable:L"SignatureSupport"\r
- ## PRODUCES ## Variable:L"VendorKeys"\r
- gEfiGlobalVariableGuid\r
- \r
- ## SOMETIMES_CONSUMES ## Variable:L"DB"\r
- ## SOMETIMES_CONSUMES ## Variable:L"DBX"\r
- gEfiImageSecurityDatabaseGuid\r
- \r
- ## CONSUMES ## Variable:L"SecureBootEnable"\r
- ## PRODUCES ## Variable:L"SecureBootEnable"\r
- gEfiSecureBootEnableDisableGuid\r
- \r
- ## CONSUMES ## Variable:L"CustomMode"\r
- ## PRODUCES ## Variable:L"CustomMode"\r
- gEfiCustomModeEnableGuid\r
- \r
- ## CONSUMES ## Variable:L"certdb"\r
- ## PRODUCES ## Variable:L"certdb"\r
- gEfiCertDbGuid\r
-\r
- ## CONSUMES ## Variable:L"VendorKeysNv"\r
- ## PRODUCES ## Variable:L"VendorKeysNv"\r
- gEfiVendorKeysNvGuid\r
- \r
- gSmmVariableWriteGuid ## PRODUCES ## GUID # Install protocol\r
- gEfiCertTypeRsa2048Sha256Guid ## SOMETIMES_CONSUMES ## GUID # Unique ID for the format of the CertData.\r
- gEfiCertPkcs7Guid ## SOMETIMES_CONSUMES ## GUID # Unique ID for the format of the CertData.\r
- gEfiCertX509Guid ## SOMETIMES_CONSUMES ## GUID # Unique ID for the type of the signature.\r
- gEfiSystemNvDataFvGuid ## CONSUMES ## GUID\r
- gEfiHardwareErrorVariableGuid ## SOMETIMES_CONSUMES ## Variable:L"HwErrRec####"\r
- gEdkiiFaultTolerantWriteGuid ## SOMETIMES_CONSUMES ## HOB\r
- gEdkiiVarErrorFlagGuid ## CONSUMES ## GUID\r
-\r
-[Pcd]\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase ## SOMETIMES_CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdFlashNvStorageVariableBase64 ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdVariableStoreSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdHwErrStorageSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxUserNvVariableSpaceSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdBoottimeReservedNvVariableSpaceSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdReclaimVariableSpaceAtEndOfDxe ## CONSUMES\r
-\r
-[FeaturePcd]\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdVariableCollectStatistics ## CONSUMES # statistic the information of variable.\r
- gEfiMdePkgTokenSpaceGuid.PcdUefiVariableDefaultLangDeprecate ## CONSUMES # Auto update PlatformLang/Lang\r
-\r
-[Depex]\r
- TRUE\r
- \r
-[UserExtensions.TianoCore."ExtraFiles"]\r
- VariableSmmExtra.uni\r
+++ /dev/null
-/** @file\r
- Implement all four UEFI Runtime Variable services for the nonvolatile\r
- and volatile storage space and install variable architecture protocol\r
- based on SMM variable module.\r
-\r
- Caution: This module requires additional review when modified.\r
- This driver will have external input - variable data.\r
- This external input must be validated carefully to avoid security issue like\r
- buffer overflow, integer overflow.\r
-\r
- RuntimeServiceGetVariable() and RuntimeServiceSetVariable() are external API\r
- to receive data buffer. The size should be checked carefully.\r
-\r
- InitCommunicateBuffer() is really function to check the variable data size.\r
-\r
-Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r
-This program and the accompanying materials \r
-are licensed and made available under the terms and conditions of the BSD License \r
-which accompanies this distribution. The full text of the license may be found at \r
-http://opensource.org/licenses/bsd-license.php\r
-\r
-THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
-WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
-**/\r
-\r
-#include <PiDxe.h>\r
-#include <Protocol/VariableWrite.h>\r
-#include <Protocol/Variable.h>\r
-#include <Protocol/SmmCommunication.h>\r
-#include <Protocol/SmmVariable.h>\r
-#include <Protocol/VariableLock.h>\r
-#include <Protocol/VarCheck.h>\r
-\r
-#include <Library/UefiBootServicesTableLib.h>\r
-#include <Library/UefiRuntimeServicesTableLib.h>\r
-#include <Library/MemoryAllocationLib.h>\r
-#include <Library/UefiDriverEntryPoint.h>\r
-#include <Library/UefiRuntimeLib.h>\r
-#include <Library/BaseMemoryLib.h>\r
-#include <Library/DebugLib.h>\r
-#include <Library/PcdLib.h>\r
-#include <Library/UefiLib.h>\r
-#include <Library/BaseLib.h>\r
-\r
-#include <Guid/EventGroup.h>\r
-#include <Guid/AuthenticatedVariableFormat.h>\r
-#include <Guid/SmmVariableCommon.h>\r
-\r
-EFI_HANDLE mHandle = NULL; \r
-EFI_SMM_VARIABLE_PROTOCOL *mSmmVariable = NULL;\r
-EFI_EVENT mVirtualAddressChangeEvent = NULL;\r
-EFI_SMM_COMMUNICATION_PROTOCOL *mSmmCommunication = NULL;\r
-UINT8 *mVariableBuffer = NULL;\r
-UINT8 *mVariableBufferPhysical = NULL;\r
-UINTN mVariableBufferSize;\r
-UINTN mVariableBufferPayloadSize;\r
-EFI_LOCK mVariableServicesLock;\r
-EDKII_VARIABLE_LOCK_PROTOCOL mVariableLock;\r
-EDKII_VAR_CHECK_PROTOCOL mVarCheck;\r
-\r
-#define MAX_NV_VARIABLE_SIZE (MAX (MAX (PcdGet32 (PcdMaxVariableSize), \\r
- PcdGet32 (PcdMaxAuthVariableSize)), \\r
- PcdGet32 (PcdMaxHardwareErrorVariableSize)))\r
-\r
-/**\r
- SecureBoot Hook for SetVariable.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-SecureBootHook (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- );\r
-\r
-/**\r
- Acquires lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function that will be removed when\r
- EfiAcquireLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiAcquireLock() at boot time, and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to acquire.\r
-\r
-**/\r
-VOID\r
-AcquireLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
- if (!EfiAtRuntime ()) {\r
- EfiAcquireLock (Lock);\r
- }\r
-}\r
-\r
-/**\r
- Releases lock only at boot time. Simply returns at runtime.\r
-\r
- This is a temperary function which will be removed when\r
- EfiReleaseLock() in UefiLib can handle the call in UEFI\r
- Runtimer driver in RT phase.\r
- It calls EfiReleaseLock() at boot time and simply returns\r
- at runtime.\r
-\r
- @param Lock A pointer to the lock to release.\r
-\r
-**/\r
-VOID\r
-ReleaseLockOnlyAtBootTime (\r
- IN EFI_LOCK *Lock\r
- )\r
-{\r
- if (!EfiAtRuntime ()) {\r
- EfiReleaseLock (Lock);\r
- }\r
-}\r
-\r
-/**\r
- Initialize the communicate buffer using DataSize and Function.\r
-\r
- The communicate size is: SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE +\r
- DataSize.\r
-\r
- Caution: This function may receive untrusted input.\r
- The data size external input, so this function will validate it carefully to avoid buffer overflow.\r
-\r
- @param[out] DataPtr Points to the data in the communicate buffer.\r
- @param[in] DataSize The data size to send to SMM.\r
- @param[in] Function The function number to initialize the communicate header.\r
- \r
- @retval EFI_INVALID_PARAMETER The data size is too big.\r
- @retval EFI_SUCCESS Find the specified variable.\r
-\r
-**/\r
-EFI_STATUS\r
-InitCommunicateBuffer (\r
- OUT VOID **DataPtr OPTIONAL,\r
- IN UINTN DataSize,\r
- IN UINTN Function\r
- )\r
-{\r
- EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader; \r
- SMM_VARIABLE_COMMUNICATE_HEADER *SmmVariableFunctionHeader; \r
-\r
- \r
- if (DataSize + SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE > mVariableBufferSize) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- SmmCommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *) mVariableBuffer;\r
- CopyGuid (&SmmCommunicateHeader->HeaderGuid, &gEfiSmmVariableProtocolGuid);\r
- SmmCommunicateHeader->MessageLength = DataSize + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE;\r
- \r
- SmmVariableFunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *) SmmCommunicateHeader->Data;\r
- SmmVariableFunctionHeader->Function = Function;\r
- if (DataPtr != NULL) {\r
- *DataPtr = SmmVariableFunctionHeader->Data;\r
- }\r
-\r
- return EFI_SUCCESS;\r
-}\r
-\r
-\r
-/**\r
- Send the data in communicate buffer to SMM.\r
-\r
- @param[in] DataSize This size of the function header and the data.\r
-\r
- @retval EFI_SUCCESS Success is returned from the functin in SMM.\r
- @retval Others Failure is returned from the function in SMM. \r
- \r
-**/\r
-EFI_STATUS\r
-SendCommunicateBuffer (\r
- IN UINTN DataSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN CommSize;\r
- EFI_SMM_COMMUNICATE_HEADER *SmmCommunicateHeader; \r
- SMM_VARIABLE_COMMUNICATE_HEADER *SmmVariableFunctionHeader;\r
- \r
- CommSize = DataSize + SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE;\r
- Status = mSmmCommunication->Communicate (mSmmCommunication, mVariableBufferPhysical, &CommSize);\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- SmmCommunicateHeader = (EFI_SMM_COMMUNICATE_HEADER *) mVariableBuffer;\r
- SmmVariableFunctionHeader = (SMM_VARIABLE_COMMUNICATE_HEADER *)SmmCommunicateHeader->Data;\r
- return SmmVariableFunctionHeader->ReturnStatus;\r
-}\r
-\r
-/**\r
- Mark a variable that will become read-only after leaving the DXE phase of execution.\r
-\r
- @param[in] This The VARIABLE_LOCK_PROTOCOL instance.\r
- @param[in] VariableName A pointer to the variable name that will be made read-only subsequently.\r
- @param[in] VendorGuid A pointer to the vendor GUID that will be made read-only subsequently.\r
-\r
- @retval EFI_SUCCESS The variable specified by the VariableName and the VendorGuid was marked\r
- as pending to be read-only.\r
- @retval EFI_INVALID_PARAMETER VariableName or VendorGuid is NULL.\r
- Or VariableName is an empty string.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource to hold the lock request.\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableLockRequestToLock (\r
- IN CONST EDKII_VARIABLE_LOCK_PROTOCOL *This,\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN VariableNameSize;\r
- UINTN PayloadSize;\r
- SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE *VariableToLock;\r
-\r
- if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- VariableNameSize = StrSize (VariableName);\r
- VariableToLock = NULL;\r
-\r
- //\r
- // If VariableName exceeds SMM payload limit. Return failure\r
- //\r
- if (VariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE, Name)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize.\r
- //\r
- PayloadSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_LOCK_VARIABLE, Name) + VariableNameSize;\r
- Status = InitCommunicateBuffer ((VOID **) &VariableToLock, PayloadSize, SMM_VARIABLE_FUNCTION_LOCK_VARIABLE);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (VariableToLock != NULL);\r
-\r
- CopyGuid (&VariableToLock->Guid, VendorGuid);\r
- VariableToLock->NameSize = VariableNameSize;\r
- CopyMem (VariableToLock->Name, VariableName, VariableToLock->NameSize);\r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
- Register SetVariable check handler.\r
-\r
- @param[in] Handler Pointer to check handler.\r
-\r
- @retval EFI_SUCCESS The SetVariable check handler was registered successfully.\r
- @retval EFI_INVALID_PARAMETER Handler is NULL.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource for the SetVariable check handler register request.\r
- @retval EFI_UNSUPPORTED This interface is not implemented.\r
- For example, it is unsupported in VarCheck protocol if both VarCheck and SmmVarCheck protocols are present.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckRegisterSetVariableCheckHandler (\r
- IN VAR_CHECK_SET_VARIABLE_CHECK_HANDLER Handler\r
- )\r
-{\r
- return EFI_UNSUPPORTED;\r
-}\r
-\r
-/**\r
- Variable property set.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[in] VariableProperty Pointer to the input variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was set successfully.\r
- @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string,\r
- or the fields of VariableProperty are not valid.\r
- @retval EFI_ACCESS_DENIED EFI_END_OF_DXE_EVENT_GROUP_GUID or EFI_EVENT_GROUP_READY_TO_BOOT has\r
- already been signaled.\r
- @retval EFI_OUT_OF_RESOURCES There is not enough resource for the variable property set request.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckVariablePropertySet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- IN VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN VariableNameSize;\r
- UINTN PayloadSize;\r
- SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY *CommVariableProperty;\r
-\r
- if (Name == NULL || Name[0] == 0 || Guid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableProperty == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableProperty->Revision != VAR_CHECK_VARIABLE_PROPERTY_REVISION) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- VariableNameSize = StrSize (Name);\r
- CommVariableProperty = NULL;\r
-\r
- //\r
- // If VariableName exceeds SMM payload limit. Return failure\r
- //\r
- if (VariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime (&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize.\r
- //\r
- PayloadSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) + VariableNameSize;\r
- Status = InitCommunicateBuffer ((VOID **) &CommVariableProperty, PayloadSize, SMM_VARIABLE_FUNCTION_VAR_CHECK_VARIABLE_PROPERTY_SET);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (CommVariableProperty != NULL);\r
-\r
- CopyGuid (&CommVariableProperty->Guid, Guid);\r
- CopyMem (&CommVariableProperty->VariableProperty, VariableProperty, sizeof (*VariableProperty));\r
- CommVariableProperty->NameSize = VariableNameSize;\r
- CopyMem (CommVariableProperty->Name, Name, CommVariableProperty->NameSize);\r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
- Variable property get.\r
-\r
- @param[in] Name Pointer to the variable name.\r
- @param[in] Guid Pointer to the vendor GUID.\r
- @param[out] VariableProperty Pointer to the output variable property.\r
-\r
- @retval EFI_SUCCESS The property of variable specified by the Name and Guid was got successfully.\r
- @retval EFI_INVALID_PARAMETER Name, Guid or VariableProperty is NULL, or Name is an empty string.\r
- @retval EFI_NOT_FOUND The property of variable specified by the Name and Guid was not found.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VarCheckVariablePropertyGet (\r
- IN CHAR16 *Name,\r
- IN EFI_GUID *Guid,\r
- OUT VAR_CHECK_VARIABLE_PROPERTY *VariableProperty\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN VariableNameSize;\r
- UINTN PayloadSize;\r
- SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY *CommVariableProperty;\r
-\r
- if (Name == NULL || Name[0] == 0 || Guid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- if (VariableProperty == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- VariableNameSize = StrSize (Name);\r
- CommVariableProperty = NULL;\r
-\r
- //\r
- // If VariableName exceeds SMM payload limit. Return failure\r
- //\r
- if (VariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime (&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize.\r
- //\r
- PayloadSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) + VariableNameSize;\r
- Status = InitCommunicateBuffer ((VOID **) &CommVariableProperty, PayloadSize, SMM_VARIABLE_FUNCTION_VAR_CHECK_VARIABLE_PROPERTY_GET);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (CommVariableProperty != NULL);\r
-\r
- CopyGuid (&CommVariableProperty->Guid, Guid);\r
- CommVariableProperty->NameSize = VariableNameSize;\r
- CopyMem (CommVariableProperty->Name, Name, CommVariableProperty->NameSize);\r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
- if (Status == EFI_SUCCESS) {\r
- CopyMem (VariableProperty, &CommVariableProperty->VariableProperty, sizeof (*VariableProperty));\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
- This code finds variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- Caution: This function may receive untrusted input.\r
- The data size is external input, so this function will validate it carefully to avoid buffer overflow.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[out] Attributes Attribute value of the variable found.\r
- @param[in, out] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[out] Data Data pointer.\r
- \r
- @retval EFI_INVALID_PARAMETER Invalid parameter.\r
- @retval EFI_SUCCESS Find the specified variable.\r
- @retval EFI_NOT_FOUND Not found.\r
- @retval EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-RuntimeServiceGetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- OUT UINT32 *Attributes OPTIONAL,\r
- IN OUT UINTN *DataSize,\r
- OUT VOID *Data\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN PayloadSize;\r
- SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE *SmmVariableHeader;\r
- UINTN TempDataSize;\r
- UINTN VariableNameSize;\r
-\r
- if (VariableName == NULL || VendorGuid == NULL || DataSize == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- TempDataSize = *DataSize;\r
- VariableNameSize = StrSize (VariableName);\r
- SmmVariableHeader = NULL;\r
-\r
- //\r
- // If VariableName exceeds SMM payload limit. Return failure\r
- //\r
- if (VariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize.\r
- //\r
- if (TempDataSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) - VariableNameSize) {\r
- //\r
- // If output data buffer exceed SMM payload limit. Trim output buffer to SMM payload size\r
- //\r
- TempDataSize = mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) - VariableNameSize;\r
- }\r
- PayloadSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) + VariableNameSize + TempDataSize;\r
-\r
- Status = InitCommunicateBuffer ((VOID **)&SmmVariableHeader, PayloadSize, SMM_VARIABLE_FUNCTION_GET_VARIABLE);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (SmmVariableHeader != NULL);\r
-\r
- CopyGuid (&SmmVariableHeader->Guid, VendorGuid);\r
- SmmVariableHeader->DataSize = TempDataSize;\r
- SmmVariableHeader->NameSize = VariableNameSize;\r
- if (Attributes == NULL) {\r
- SmmVariableHeader->Attributes = 0;\r
- } else {\r
- SmmVariableHeader->Attributes = *Attributes;\r
- }\r
- CopyMem (SmmVariableHeader->Name, VariableName, SmmVariableHeader->NameSize);\r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
-\r
- //\r
- // Get data from SMM.\r
- //\r
- if (Status == EFI_SUCCESS || Status == EFI_BUFFER_TOO_SMALL) {\r
- //\r
- // SMM CommBuffer DataSize can be a trimed value\r
- // Only update DataSize when needed\r
- //\r
- *DataSize = SmmVariableHeader->DataSize;\r
- }\r
- if (Attributes != NULL) {\r
- *Attributes = SmmVariableHeader->Attributes;\r
- }\r
-\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- if (Data != NULL) {\r
- CopyMem (Data, (UINT8 *)SmmVariableHeader->Name + SmmVariableHeader->NameSize, SmmVariableHeader->DataSize);\r
- } else {\r
- Status = EFI_INVALID_PARAMETER;\r
- }\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- This code Finds the Next available variable.\r
-\r
- @param[in, out] VariableNameSize Size of the variable name.\r
- @param[in, out] VariableName Pointer to variable name.\r
- @param[in, out] VendorGuid Variable Vendor Guid.\r
-\r
- @retval EFI_INVALID_PARAMETER Invalid parameter.\r
- @retval EFI_SUCCESS Find the specified variable.\r
- @retval EFI_NOT_FOUND Not found.\r
- @retval EFI_BUFFER_TO_SMALL DataSize is too small for the result.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-RuntimeServiceGetNextVariableName (\r
- IN OUT UINTN *VariableNameSize,\r
- IN OUT CHAR16 *VariableName,\r
- IN OUT EFI_GUID *VendorGuid\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN PayloadSize;\r
- SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME *SmmGetNextVariableName;\r
- UINTN OutVariableNameSize;\r
- UINTN InVariableNameSize;\r
-\r
- if (VariableNameSize == NULL || VariableName == NULL || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- OutVariableNameSize = *VariableNameSize;\r
- InVariableNameSize = StrSize (VariableName);\r
- SmmGetNextVariableName = NULL;\r
-\r
- //\r
- // If input string exceeds SMM payload limit. Return failure\r
- //\r
- if (InVariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name)) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize.\r
- //\r
- if (OutVariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name)) {\r
- //\r
- // If output buffer exceed SMM payload limit. Trim output buffer to SMM payload size\r
- //\r
- OutVariableNameSize = mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name);\r
- }\r
- //\r
- // Payload should be Guid + NameSize + MAX of Input & Output buffer\r
- //\r
- PayloadSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_GET_NEXT_VARIABLE_NAME, Name) + MAX (OutVariableNameSize, InVariableNameSize);\r
-\r
- Status = InitCommunicateBuffer ((VOID **)&SmmGetNextVariableName, PayloadSize, SMM_VARIABLE_FUNCTION_GET_NEXT_VARIABLE_NAME);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (SmmGetNextVariableName != NULL);\r
-\r
- //\r
- // SMM comm buffer->NameSize is buffer size for return string\r
- //\r
- SmmGetNextVariableName->NameSize = OutVariableNameSize;\r
-\r
- CopyGuid (&SmmGetNextVariableName->Guid, VendorGuid);\r
- //\r
- // Copy whole string\r
- //\r
- CopyMem (SmmGetNextVariableName->Name, VariableName, InVariableNameSize);\r
- if (OutVariableNameSize > InVariableNameSize) {\r
- ZeroMem ((UINT8 *) SmmGetNextVariableName->Name + InVariableNameSize, OutVariableNameSize - InVariableNameSize);\r
- }\r
-\r
- //\r
- // Send data to SMM\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
-\r
- //\r
- // Get data from SMM.\r
- //\r
- if (Status == EFI_SUCCESS || Status == EFI_BUFFER_TOO_SMALL) {\r
- //\r
- // SMM CommBuffer NameSize can be a trimed value\r
- // Only update VariableNameSize when needed\r
- //\r
- *VariableNameSize = SmmGetNextVariableName->NameSize;\r
- }\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- \r
- CopyGuid (VendorGuid, &SmmGetNextVariableName->Guid);\r
- CopyMem (VariableName, SmmGetNextVariableName->Name, SmmGetNextVariableName->NameSize); \r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
- return Status;\r
-}\r
-\r
-/**\r
- This code sets variable in storage blocks (Volatile or Non-Volatile).\r
-\r
- Caution: This function may receive untrusted input.\r
- The data size and data are external input, so this function will validate it carefully to avoid buffer overflow.\r
-\r
- @param[in] VariableName Name of Variable to be found.\r
- @param[in] VendorGuid Variable vendor GUID.\r
- @param[in] Attributes Attribute value of the variable found\r
- @param[in] DataSize Size of Data found. If size is less than the\r
- data, this value contains the required size.\r
- @param[in] Data Data pointer.\r
-\r
- @retval EFI_INVALID_PARAMETER Invalid parameter.\r
- @retval EFI_SUCCESS Set successfully.\r
- @retval EFI_OUT_OF_RESOURCES Resource not enough to set variable.\r
- @retval EFI_NOT_FOUND Not found.\r
- @retval EFI_WRITE_PROTECTED Variable is read-only.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-RuntimeServiceSetVariable (\r
- IN CHAR16 *VariableName,\r
- IN EFI_GUID *VendorGuid,\r
- IN UINT32 Attributes,\r
- IN UINTN DataSize,\r
- IN VOID *Data\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN PayloadSize; \r
- SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE *SmmVariableHeader;\r
- UINTN VariableNameSize;\r
- \r
- //\r
- // Check input parameters.\r
- //\r
- if (VariableName == NULL || VariableName[0] == 0 || VendorGuid == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- } \r
-\r
- if (DataSize != 0 && Data == NULL) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- VariableNameSize = StrSize (VariableName);\r
- SmmVariableHeader = NULL;\r
-\r
- //\r
- // If VariableName or DataSize exceeds SMM payload limit. Return failure\r
- //\r
- if ((VariableNameSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name)) ||\r
- (DataSize > mVariableBufferPayloadSize - OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) - VariableNameSize)){\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize.\r
- //\r
- PayloadSize = OFFSET_OF (SMM_VARIABLE_COMMUNICATE_ACCESS_VARIABLE, Name) + VariableNameSize + DataSize;\r
- Status = InitCommunicateBuffer ((VOID **)&SmmVariableHeader, PayloadSize, SMM_VARIABLE_FUNCTION_SET_VARIABLE);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (SmmVariableHeader != NULL);\r
-\r
- CopyGuid ((EFI_GUID *) &SmmVariableHeader->Guid, VendorGuid);\r
- SmmVariableHeader->DataSize = DataSize;\r
- SmmVariableHeader->NameSize = VariableNameSize;\r
- SmmVariableHeader->Attributes = Attributes;\r
- CopyMem (SmmVariableHeader->Name, VariableName, SmmVariableHeader->NameSize);\r
- CopyMem ((UINT8 *) SmmVariableHeader->Name + SmmVariableHeader->NameSize, Data, DataSize);\r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
-\r
- if (!EfiAtRuntime ()) {\r
- if (!EFI_ERROR (Status)) {\r
- SecureBootHook (\r
- VariableName,\r
- VendorGuid\r
- );\r
- }\r
- }\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- This code returns information about the EFI variables.\r
-\r
- @param[in] Attributes Attributes bitmask to specify the type of variables\r
- on which to return information.\r
- @param[out] MaximumVariableStorageSize Pointer to the maximum size of the storage space available\r
- for the EFI variables associated with the attributes specified.\r
- @param[out] RemainingVariableStorageSize Pointer to the remaining size of the storage space available\r
- for EFI variables associated with the attributes specified.\r
- @param[out] MaximumVariableSize Pointer to the maximum size of an individual EFI variables\r
- associated with the attributes specified.\r
-\r
- @retval EFI_INVALID_PARAMETER An invalid combination of attribute bits was supplied.\r
- @retval EFI_SUCCESS Query successfully.\r
- @retval EFI_UNSUPPORTED The attribute is not supported on this platform.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-RuntimeServiceQueryVariableInfo (\r
- IN UINT32 Attributes,\r
- OUT UINT64 *MaximumVariableStorageSize,\r
- OUT UINT64 *RemainingVariableStorageSize,\r
- OUT UINT64 *MaximumVariableSize\r
- )\r
-{\r
- EFI_STATUS Status;\r
- UINTN PayloadSize;\r
- SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO *SmmQueryVariableInfo;\r
-\r
- SmmQueryVariableInfo = NULL;\r
-\r
- if(MaximumVariableStorageSize == NULL || RemainingVariableStorageSize == NULL || MaximumVariableSize == NULL || Attributes == 0) {\r
- return EFI_INVALID_PARAMETER;\r
- }\r
-\r
- AcquireLockOnlyAtBootTime(&mVariableServicesLock);\r
-\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + PayloadSize;\r
- //\r
- PayloadSize = sizeof (SMM_VARIABLE_COMMUNICATE_QUERY_VARIABLE_INFO);\r
- Status = InitCommunicateBuffer ((VOID **)&SmmQueryVariableInfo, PayloadSize, SMM_VARIABLE_FUNCTION_QUERY_VARIABLE_INFO);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
- ASSERT (SmmQueryVariableInfo != NULL);\r
-\r
- SmmQueryVariableInfo->Attributes = Attributes;\r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- Status = SendCommunicateBuffer (PayloadSize);\r
- if (EFI_ERROR (Status)) {\r
- goto Done;\r
- }\r
-\r
- //\r
- // Get data from SMM.\r
- //\r
- *MaximumVariableSize = SmmQueryVariableInfo->MaximumVariableSize;\r
- *MaximumVariableStorageSize = SmmQueryVariableInfo->MaximumVariableStorageSize;\r
- *RemainingVariableStorageSize = SmmQueryVariableInfo->RemainingVariableStorageSize; \r
-\r
-Done:\r
- ReleaseLockOnlyAtBootTime (&mVariableServicesLock);\r
- return Status;\r
-}\r
-\r
-\r
-/**\r
- Exit Boot Services Event notification handler.\r
-\r
- Notify SMM variable driver about the event.\r
-\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-OnExitBootServices (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE.\r
- //\r
- InitCommunicateBuffer (NULL, 0, SMM_VARIABLE_FUNCTION_EXIT_BOOT_SERVICE); \r
-\r
- //\r
- // Send data to SMM.\r
- //\r
- SendCommunicateBuffer (0);\r
-}\r
-\r
-\r
-/**\r
- On Ready To Boot Services Event notification handler.\r
-\r
- Notify SMM variable driver about the event.\r
-\r
- @param[in] Event Event whose notification function is being invoked\r
- @param[in] Context Pointer to the notification function's context\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-OnReadyToBoot (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- //\r
- // Init the communicate buffer. The buffer data size is:\r
- // SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE.\r
- //\r
- InitCommunicateBuffer (NULL, 0, SMM_VARIABLE_FUNCTION_READY_TO_BOOT);\r
- \r
- //\r
- // Send data to SMM.\r
- //\r
- SendCommunicateBuffer (0);\r
-}\r
-\r
-\r
-/**\r
- Notification function of EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE.\r
-\r
- This is a notification function registered on EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
- It convers pointer to new virtual address.\r
-\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
-\r
-**/\r
-VOID\r
-EFIAPI\r
-VariableAddressChangeEvent (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- EfiConvertPointer (0x0, (VOID **) &mVariableBuffer);\r
- EfiConvertPointer (0x0, (VOID **) &mSmmCommunication);\r
-}\r
-\r
-\r
-/**\r
- Initialize variable service and install Variable Architectural protocol.\r
-\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
- \r
-**/\r
-VOID\r
-EFIAPI\r
-SmmVariableReady (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- EFI_STATUS Status;\r
-\r
- Status = gBS->LocateProtocol (&gEfiSmmVariableProtocolGuid, NULL, (VOID **)&mSmmVariable);\r
- if (EFI_ERROR (Status)) {\r
- return;\r
- }\r
- \r
- Status = gBS->LocateProtocol (&gEfiSmmCommunicationProtocolGuid, NULL, (VOID **) &mSmmCommunication);\r
- ASSERT_EFI_ERROR (Status);\r
- \r
- //\r
- // Allocate memory for variable communicate buffer.\r
- //\r
- mVariableBufferPayloadSize = MAX_NV_VARIABLE_SIZE +\r
- OFFSET_OF (SMM_VARIABLE_COMMUNICATE_VAR_CHECK_VARIABLE_PROPERTY, Name) - sizeof (VARIABLE_HEADER);\r
- mVariableBufferSize = SMM_COMMUNICATE_HEADER_SIZE + SMM_VARIABLE_COMMUNICATE_HEADER_SIZE + mVariableBufferPayloadSize;\r
- mVariableBuffer = AllocateRuntimePool (mVariableBufferSize);\r
- ASSERT (mVariableBuffer != NULL);\r
-\r
- //\r
- // Save the buffer physical address used for SMM conmunication.\r
- //\r
- mVariableBufferPhysical = mVariableBuffer;\r
-\r
- gRT->GetVariable = RuntimeServiceGetVariable;\r
- gRT->GetNextVariableName = RuntimeServiceGetNextVariableName;\r
- gRT->SetVariable = RuntimeServiceSetVariable;\r
- gRT->QueryVariableInfo = RuntimeServiceQueryVariableInfo;\r
- \r
- //\r
- // Install the Variable Architectural Protocol on a new handle.\r
- //\r
- Status = gBS->InstallProtocolInterface (\r
- &mHandle,\r
- &gEfiVariableArchProtocolGuid, \r
- EFI_NATIVE_INTERFACE,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- mVariableLock.RequestToLock = VariableLockRequestToLock;\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mHandle,\r
- &gEdkiiVariableLockProtocolGuid,\r
- &mVariableLock,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-\r
- mVarCheck.RegisterSetVariableCheckHandler = VarCheckRegisterSetVariableCheckHandler;\r
- mVarCheck.VariablePropertySet = VarCheckVariablePropertySet;\r
- mVarCheck.VariablePropertyGet = VarCheckVariablePropertyGet;\r
- Status = gBS->InstallMultipleProtocolInterfaces (\r
- &mHandle,\r
- &gEdkiiVarCheckProtocolGuid,\r
- &mVarCheck,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status);\r
-}\r
-\r
-\r
-/**\r
- SMM Non-Volatile variable write service is ready notify event handler.\r
-\r
- @param[in] Event Event whose notification function is being invoked.\r
- @param[in] Context Pointer to the notification function's context.\r
- \r
-**/\r
-VOID\r
-EFIAPI\r
-SmmVariableWriteReady (\r
- IN EFI_EVENT Event,\r
- IN VOID *Context\r
- )\r
-{\r
- EFI_STATUS Status;\r
- VOID *ProtocolOps;\r
-\r
- //\r
- // Check whether the protocol is installed or not.\r
- //\r
- Status = gBS->LocateProtocol (&gSmmVariableWriteGuid, NULL, (VOID **) &ProtocolOps);\r
- if (EFI_ERROR (Status)) {\r
- return;\r
- }\r
- \r
- Status = gBS->InstallProtocolInterface (\r
- &mHandle,\r
- &gEfiVariableWriteArchProtocolGuid, \r
- EFI_NATIVE_INTERFACE,\r
- NULL\r
- );\r
- ASSERT_EFI_ERROR (Status); \r
-}\r
-\r
-\r
-/**\r
- Variable Driver main entry point. The Variable driver places the 4 EFI\r
- runtime services in the EFI System Table and installs arch protocols \r
- for variable read and write services being available. It also registers\r
- a notification function for an EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE event.\r
-\r
- @param[in] ImageHandle The firmware allocated handle for the EFI image. \r
- @param[in] SystemTable A pointer to the EFI System Table.\r
- \r
- @retval EFI_SUCCESS Variable service successfully initialized.\r
-\r
-**/\r
-EFI_STATUS\r
-EFIAPI\r
-VariableSmmRuntimeInitialize (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
- )\r
-{\r
- VOID *SmmVariableRegistration;\r
- VOID *SmmVariableWriteRegistration;\r
- EFI_EVENT OnReadyToBootEvent;\r
- EFI_EVENT ExitBootServiceEvent;\r
- EFI_EVENT LegacyBootEvent;\r
-\r
- EfiInitializeLock (&mVariableServicesLock, TPL_NOTIFY);\r
-\r
- //\r
- // Smm variable service is ready\r
- //\r
- EfiCreateProtocolNotifyEvent (\r
- &gEfiSmmVariableProtocolGuid, \r
- TPL_CALLBACK, \r
- SmmVariableReady, \r
- NULL, \r
- &SmmVariableRegistration\r
- );\r
-\r
- //\r
- // Smm Non-Volatile variable write service is ready\r
- //\r
- EfiCreateProtocolNotifyEvent (\r
- &gSmmVariableWriteGuid, \r
- TPL_CALLBACK, \r
- SmmVariableWriteReady, \r
- NULL, \r
- &SmmVariableWriteRegistration\r
- );\r
-\r
- //\r
- // Register the event to reclaim variable for OS usage.\r
- //\r
- EfiCreateEventReadyToBootEx (\r
- TPL_NOTIFY, \r
- OnReadyToBoot, \r
- NULL, \r
- &OnReadyToBootEvent\r
- ); \r
-\r
- //\r
- // Register the event to inform SMM variable that it is at runtime.\r
- //\r
- gBS->CreateEventEx (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_NOTIFY,\r
- OnExitBootServices,\r
- NULL,\r
- &gEfiEventExitBootServicesGuid,\r
- &ExitBootServiceEvent\r
- ); \r
-\r
- //\r
- // Register the event to inform SMM variable that it is at runtime for legacy boot.\r
- // Reuse OnExitBootServices() here.\r
- //\r
- EfiCreateEventLegacyBootEx(\r
- TPL_NOTIFY,\r
- OnExitBootServices,\r
- NULL,\r
- &LegacyBootEvent\r
- );\r
-\r
- //\r
- // Register the event to convert the pointer for runtime.\r
- //\r
- gBS->CreateEventEx (\r
- EVT_NOTIFY_SIGNAL,\r
- TPL_NOTIFY,\r
- VariableAddressChangeEvent,\r
- NULL,\r
- &gEfiEventVirtualAddressChangeGuid,\r
- &mVirtualAddressChangeEvent\r
- );\r
- \r
- return EFI_SUCCESS;\r
-}\r
-\r
+++ /dev/null
-## @file\r
-# Runtime DXE part corresponding to SMM authenticated variable module\r
-#\r
-# This module installs variable arch protocol and variable write arch protocol to provide \r
-# variable service. This module need work together with SMM authenticated variable module. \r
-#\r
-# Caution: This module requires additional review when modified.\r
-# This driver will have external input - variable data.\r
-# This external input must be validated carefully to avoid security issues such as \r
-# buffer overflow or integer overflow.\r
-# The whole SMM authentication variable design relies on the integrity of flash part and SMM.\r
-# which is assumed to be protected by platform. All variable code and metadata in flash/SMM Memory\r
-# may not be modified without authorization. If platform fails to protect these resources, \r
-# the authentication service provided in this driver will be broken, and the behavior is undefined.\r
-#\r
-# Copyright (c) 2010 - 2015, Intel Corporation. All rights reserved.<BR>\r
-# This program and the accompanying materials\r
-# are licensed and made available under the terms and conditions of the BSD License\r
-# which accompanies this distribution. The full text of the license may be found at\r
-# http://opensource.org/licenses/bsd-license.php\r
-# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
-# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-#\r
-##\r
-\r
-[Defines]\r
- INF_VERSION = 0x00010005\r
- BASE_NAME = VariableAuthSmmRuntimeDxe\r
- MODULE_UNI_FILE = VariableAuthSmmRuntimeDxe.uni\r
- FILE_GUID = 067E2381-7234-4798-B49C-D5FECBFF6D07\r
- MODULE_TYPE = DXE_RUNTIME_DRIVER\r
- VERSION_STRING = 1.0\r
- ENTRY_POINT = VariableSmmRuntimeInitialize\r
-\r
-#\r
-# The following information is for reference only and not required by the build tools.\r
-#\r
-# VALID_ARCHITECTURES = IA32 X64\r
-#\r
-# VIRTUAL_ADDRESS_MAP_CALLBACK = VariableAddressChangeEvent\r
-#\r
-\r
-[Sources]\r
- VariableSmmRuntimeDxe.c\r
- Measurement.c\r
-\r
-[Packages]\r
- MdePkg/MdePkg.dec\r
- MdeModulePkg/MdeModulePkg.dec\r
- SecurityPkg/SecurityPkg.dec\r
-\r
-[LibraryClasses]\r
- MemoryAllocationLib\r
- BaseLib \r
- UefiBootServicesTableLib\r
- DebugLib\r
- UefiRuntimeLib\r
- DxeServicesTableLib\r
- UefiDriverEntryPoint\r
- PcdLib \r
- TpmMeasurementLib\r
-\r
-[Protocols]\r
- gEfiVariableWriteArchProtocolGuid ## PRODUCES\r
- gEfiVariableArchProtocolGuid ## PRODUCES\r
- gEfiSmmCommunicationProtocolGuid ## CONSUMES\r
- gEdkiiVariableLockProtocolGuid ## PRODUCES\r
-\r
- ## CONSUMES\r
- ## NOTIFY\r
- ## UNDEFINED # Used to do smm communication\r
- gEfiSmmVariableProtocolGuid\r
- gEdkiiVarCheckProtocolGuid ## PRODUCES\r
-\r
-[Guids]\r
- gEfiEventVirtualAddressChangeGuid ## CONSUMES ## Event\r
- gEfiEventExitBootServicesGuid ## CONSUMES ## Event\r
- \r
- ## CONSUMES ## UNDEFINED # Locate protocol\r
- ## CONSUMES ## UNDEFINED # Protocol notify\r
- gSmmVariableWriteGuid\r
- \r
-\r
- ## SOMETIMES_CONSUMES ## Variable:L"PK"\r
- ## SOMETIMES_CONSUMES ## Variable:L"KEK"\r
- ## SOMETIMES_CONSUMES ## Variable:L"SecureBoot"\r
- gEfiGlobalVariableGuid\r
- \r
- ## SOMETIMES_CONSUMES ## Variable:L"DB"\r
- ## SOMETIMES_CONSUMES ## Variable:L"DBX"\r
- gEfiImageSecurityDatabaseGuid\r
-\r
-[Pcd]\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxAuthVariableSize ## CONSUMES\r
- gEfiMdeModulePkgTokenSpaceGuid.PcdMaxHardwareErrorVariableSize ## CONSUMES\r
-\r
-[Depex]\r
- gEfiSmmCommunicationProtocolGuid\r
-\r
-[UserExtensions.TianoCore."ExtraFiles"]\r
- VariableSmmRuntimeDxeExtra.uni\r
projects / mirror_edk2.git / commitdiff