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author | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-01-30 19:49:54 +0000 |
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committer | jljusten <jljusten@6f19259b-4bc3-4df7-8a09-765794883524> | 2011-01-30 19:49:54 +0000 |
commit | b043ebc2192a83a947a7c6e9f3611e880ffde34e (patch) | |
tree | 70a1cc0fed7ab48f0de4dff0fcf5d594c49bdcd6 /OvmfPkg/Library/SerializeVariablesLib | |
parent | e79f62f01c62c8f081f11073b12264061a4dad0c (diff) | |
download | edk2-b043ebc2192a83a947a7c6e9f3611e880ffde34e.tar.gz edk2-b043ebc2192a83a947a7c6e9f3611e880ffde34e.tar.bz2 edk2-b043ebc2192a83a947a7c6e9f3611e880ffde34e.zip |
OvmfPkg: Add SerializeVariablesLib library instance
This library implements the library class interface defined at:
OvmfPkg/Include/Library/SerializeVariablesLib.h
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11285 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'OvmfPkg/Library/SerializeVariablesLib')
3 files changed, 938 insertions, 0 deletions
diff --git a/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.c b/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.c new file mode 100644 index 0000000000..a2276bfb2f --- /dev/null +++ b/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.c @@ -0,0 +1,858 @@ +/** @file + Serialize Variables Library implementation + + Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#include "SerializeVariablesLib.h" + +/** + Serialization format: + + The SerializeVariablesLib interface does not specify a format + for the serialization of the variable data. This library uses + a packed array of a non-uniformly sized data structure elements. + + Each variable is stored (packed) as: + UINT32 VendorNameSize; // Name size in bytes + CHAR16 VendorName[?]; // The variable unicode name including the + // null terminating character. + EFI_GUID VendorGuid; // The variable GUID + UINT32 DataSize; // The size of variable data in bytes + UINT8 Data[?]; // The variable data + +**/ + + +/** + Unpacks the next variable from the buffer + + @param[in] Buffer - Buffer pointing to the next variable instance + On subsequent calls, the pointer should be incremented + by the returned SizeUsed value. + @param[in] MaxSize - Max allowable size for the variable data + On subsequent calls, this should be decremented + by the returned SizeUsed value. + @param[out] Name - Variable name string (address in Buffer) + @param[out] NameSize - Size of Name in bytes + @param[out] Guid - GUID of variable (address in Buffer) + @param[out] Attributes - Attributes of variable + @param[out] Data - Buffer containing Data for variable (address in Buffer) + @param[out] DataSize - Size of Data in bytes + @param[out] SizeUsed - Total size used for this variable instance in Buffer + + @return EFI_STATUS based on the success or failure of the operation + +**/ +STATIC +EFI_STATUS +UnpackVariableFromBuffer ( + IN VOID *Buffer, + IN UINTN MaxSize, + OUT CHAR16 **Name, + OUT UINT32 *NameSize, + OUT EFI_GUID **Guid, + OUT UINT32 *Attributes, + OUT UINT32 *DataSize, + OUT VOID **Data, + OUT UINTN *SizeUsed + ) +{ + UINT8 *BytePtr; + UINTN Offset; + + BytePtr = (UINT8*)Buffer; + Offset = 0; + + *NameSize = *(UINT32*) (BytePtr + Offset); + Offset = Offset + sizeof (UINT32); + + if (Offset > MaxSize) { + return EFI_INVALID_PARAMETER; + } + + *Name = (CHAR16*) (BytePtr + Offset); + Offset = Offset + *(UINT32*)BytePtr; + if (Offset > MaxSize) { + return EFI_INVALID_PARAMETER; + } + + *Guid = (EFI_GUID*) (BytePtr + Offset); + Offset = Offset + sizeof (EFI_GUID); + if (Offset > MaxSize) { + return EFI_INVALID_PARAMETER; + } + + *Attributes = *(UINT32*) (BytePtr + Offset); + Offset = Offset + sizeof (UINT32); + if (Offset > MaxSize) { + return EFI_INVALID_PARAMETER; + } + + *DataSize = *(UINT32*) (BytePtr + Offset); + Offset = Offset + sizeof (UINT32); + if (Offset > MaxSize) { + return EFI_INVALID_PARAMETER; + } + + *Data = (VOID*) (BytePtr + Offset); + Offset = Offset + *DataSize; + if (Offset > MaxSize) { + return EFI_INVALID_PARAMETER; + } + + *SizeUsed = Offset; + + return EFI_SUCCESS; +} + + +/** + Iterates through the variables in the buffer, and calls a callback + function for each variable found. + + @param[in] CallbackFunction - Function called for each variable instance + @param[in] Context - Passed to each call of CallbackFunction + @param[in] Buffer - Buffer containing serialized variables + @param[in] MaxSize - Size of Buffer in bytes + + @return EFI_STATUS based on the success or failure of the operation + +**/ +STATIC +EFI_STATUS +IterateVariablesInBuffer ( + IN VARIABLE_SERIALIZATION_ITERATION_CALLBACK CallbackFunction, + IN VOID *CallbackContext, + IN VOID *Buffer, + IN UINTN MaxSize + ) +{ + RETURN_STATUS Status; + UINTN Count; + UINTN TotalSizeUsed; + UINTN SizeUsed; + + CHAR16 *Name; + UINT32 NameSize; + CHAR16 *AlignedName; + UINT32 AlignedNameMaxSize; + EFI_GUID *Guid; + UINT32 Attributes; + UINT32 DataSize; + VOID *Data; + + SizeUsed = 0; + AlignedName = NULL; + AlignedNameMaxSize = 0; + Name = NULL; + Guid = NULL; + Attributes = 0; + DataSize = 0; + Data = NULL; + + for ( + Status = EFI_SUCCESS, Count = 0, TotalSizeUsed = 0; + !EFI_ERROR (Status) && (TotalSizeUsed < MaxSize); + ) { + Status = UnpackVariableFromBuffer ( + (VOID*) ((UINT8*) Buffer + TotalSizeUsed), + (MaxSize - TotalSizeUsed), + &Name, + &NameSize, + &Guid, + &Attributes, + &DataSize, + &Data, + &SizeUsed + ); + if (EFI_ERROR (Status)) { + return Status; + } + + // + // We copy the name to a separately allocated buffer, + // to be sure it is 16-bit aligned. + // + if (NameSize > AlignedNameMaxSize) { + if (AlignedName != NULL) { + FreePool (AlignedName); + } + AlignedName = AllocatePool (NameSize); + } + if (AlignedName == NULL) { + return EFI_OUT_OF_RESOURCES; + } + CopyMem (AlignedName, Name, NameSize); + + TotalSizeUsed = TotalSizeUsed + SizeUsed; + + // + // Run the callback function + // + Status = (*CallbackFunction) ( + CallbackContext, + AlignedName, + Guid, + Attributes, + DataSize, + Data + ); + + } + + if (AlignedName != NULL) { + FreePool (AlignedName); + } + + // + // Make sure the entire buffer was used, or else return an error + // + if (TotalSizeUsed != MaxSize) { + DEBUG (( + EFI_D_ERROR, + "Deserialize variables error: TotalSizeUsed(%d) != MaxSize(%d)\n", + TotalSizeUsed, + MaxSize + )); + return EFI_INVALID_PARAMETER; + } + + return EFI_SUCCESS; +} + + +STATIC +RETURN_STATUS +EFIAPI +IterateVariablesCallbackNop ( + IN VOID *Context, + IN CHAR16 *VariableName, + IN EFI_GUID *VendorGuid, + IN UINT32 Attributes, + IN UINTN DataSize, + IN VOID *Data + ) +{ + return RETURN_SUCCESS; +} + + +STATIC +RETURN_STATUS +EFIAPI +IterateVariablesCallbackSetInInstance ( + IN VOID *Context, + IN CHAR16 *VariableName, + IN EFI_GUID *VendorGuid, + IN UINT32 Attributes, + IN UINTN DataSize, + IN VOID *Data + ) +{ + EFI_HANDLE Instance; + + Instance = (EFI_HANDLE) Context; + + return SerializeVariablesAddVariable ( + Instance, + VariableName, + VendorGuid, + Attributes, + DataSize, + Data + ); +} + + +STATIC +RETURN_STATUS +EFIAPI +IterateVariablesCallbackSetSystemVariable ( + IN VOID *Context, + IN CHAR16 *VariableName, + IN EFI_GUID *VendorGuid, + IN UINT32 Attributes, + IN UINTN DataSize, + IN VOID *Data + ) +{ + return gRT->SetVariable ( + VariableName, + VendorGuid, + Attributes, + DataSize, + Data + ); +} + + +STATIC +RETURN_STATUS +EnsureExtraBufferSpace ( + IN SV_INSTANCE *Instance, + IN UINTN Size + ) +{ + VOID *NewBuffer; + UINTN NewSize; + + NewSize = Instance->DataSize + Size; + if (NewSize <= Instance->BufferSize) { + return RETURN_SUCCESS; + } + + // + // Double the required size to lessen the need to re-allocate in the future + // + NewSize = 2 * NewSize; + + NewBuffer = AllocatePool (NewSize); + if (NewBuffer == NULL) { + return RETURN_OUT_OF_RESOURCES; + } + + if (Instance->BufferPtr != NULL) { + CopyMem (NewBuffer, Instance->BufferPtr, Instance->DataSize); + FreePool (Instance->BufferPtr); + } + + Instance->BufferPtr = NewBuffer; + Instance->BufferSize = NewSize; + + return RETURN_SUCCESS; +} + + +STATIC +VOID +AppendToBuffer ( + IN SV_INSTANCE *Instance, + IN VOID *Data, + IN UINTN Size + ) +{ + UINTN NewSize; + + ASSERT (Instance != NULL); + ASSERT (Data != NULL); + + NewSize = Instance->DataSize + Size; + ASSERT ((Instance->DataSize + Size) <= Instance->BufferSize); + + CopyMem ( + (VOID*) (((UINT8*) (Instance->BufferPtr)) + Instance->DataSize), + Data, + Size + ); + + Instance->DataSize = NewSize; +} + + +/** + Creates a new variable serialization instance + + @param[out] Handle - Handle for a variable serialization instance + + @retval RETURN_SUCCESS - The variable serialization instance was + successfully created. + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + create the variable serialization instance. + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesNewInstance ( + OUT EFI_HANDLE *Handle + ) +{ + SV_INSTANCE *New; + + New = AllocateZeroPool (sizeof (*New)); + if (New == NULL) { + return RETURN_OUT_OF_RESOURCES; + } + + New->Signature = SV_SIGNATURE; + + *Handle = (EFI_HANDLE) New; + return RETURN_SUCCESS; +} + + +/** + Free memory associated with a variable serialization instance + + @param[in] Handle - Handle for a variable serialization instance + + @retval RETURN_SUCCESS - The variable serialization instance was + successfully freed. + @retval RETURN_INVALID_PARAMETER - Handle was not a valid + variable serialization instance. + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesFreeInstance ( + IN EFI_HANDLE Handle + ) +{ + SV_INSTANCE *Instance; + + Instance = SV_FROM_HANDLE (Handle); + + if (Instance->Signature != SV_SIGNATURE) { + return RETURN_INVALID_PARAMETER; + } + + Instance->Signature = 0; + + if (Instance->BufferPtr != NULL) { + FreePool (Instance->BufferPtr); + } + + FreePool (Instance); + + return RETURN_SUCCESS; +} + + +/** + Creates a new variable serialization instance using the given + binary representation of the variables to fill the new instance + + @param[out] Handle - Handle for a variable serialization instance + @param[in] Buffer - A buffer with the serialized representation + of the variables. Must be the same format as produced + by SerializeVariablesToBuffer. + @param[in] Size - This is the size of the binary representation + of the variables. + + @retval RETURN_SUCCESS - The binary representation was successfully + imported into a new variable serialization instance + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + create the new variable serialization instance + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesNewInstanceFromBuffer ( + OUT EFI_HANDLE *Handle, + IN VOID *Buffer, + IN UINTN Size + ) +{ + RETURN_STATUS Status; + + Status = SerializeVariablesNewInstance (Handle); + if (RETURN_ERROR (Status)) { + return Status; + } + + Status = IterateVariablesInBuffer ( + IterateVariablesCallbackNop, + NULL, + Buffer, + Size + ); + if (RETURN_ERROR (Status)) { + SerializeVariablesFreeInstance (*Handle); + return Status; + } + + Status = IterateVariablesInBuffer ( + IterateVariablesCallbackSetInInstance, + (VOID*) *Handle, + Buffer, + Size + ); + if (RETURN_ERROR (Status)) { + SerializeVariablesFreeInstance (*Handle); + return Status; + } + + return Status; +} + + +/** + Iterates all variables found with RuntimeServices GetNextVariableName + + @param[in] CallbackFunction - Function called for each variable instance + @param[in] Context - Passed to each call of CallbackFunction + + @retval RETURN_SUCCESS - All variables were iterated without the + CallbackFunction returning an error + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + iterate through the variables + @return Any of RETURN_ERROR indicates an error reading the variable + or an error was returned from CallbackFunction + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesIterateSystemVariables ( + IN VARIABLE_SERIALIZATION_ITERATION_CALLBACK CallbackFunction, + IN VOID *Context + ) +{ + RETURN_STATUS Status; + UINTN VariableNameBufferSize; + UINTN VariableNameSize; + CHAR16 *VariableName; + EFI_GUID VendorGuid; + UINTN VariableDataBufferSize; + UINTN VariableDataSize; + VOID *VariableData; + UINT32 VariableAttributes; + VOID *NewBuffer; + + // + // Initialize the variable name and data buffer variables. + // + VariableNameBufferSize = sizeof (CHAR16); + VariableName = AllocateZeroPool (VariableNameBufferSize); + + VariableDataBufferSize = 0; + VariableData = NULL; + + for (;;) { + // + // Get the next variable name and guid + // + VariableNameSize = VariableNameBufferSize; + Status = gRT->GetNextVariableName ( + &VariableNameSize, + VariableName, + &VendorGuid + ); + if (Status == EFI_BUFFER_TOO_SMALL) { + // + // The currently allocated VariableName buffer is too small, + // so we allocate a larger buffer, and copy the old buffer + // to it. + // + NewBuffer = AllocatePool (VariableNameSize); + if (NewBuffer == NULL) { + Status = EFI_OUT_OF_RESOURCES; + break; + } + CopyMem (NewBuffer, VariableName, VariableNameBufferSize); + if (VariableName != NULL) { + FreePool (VariableName); + } + VariableName = NewBuffer; + VariableNameBufferSize = VariableNameSize; + + // + // Try to get the next variable name again with the larger buffer. + // + Status = gRT->GetNextVariableName ( + &VariableNameSize, + VariableName, + &VendorGuid + ); + } + + if (EFI_ERROR (Status)) { + if (Status == EFI_NOT_FOUND) { + Status = EFI_SUCCESS; + } + break; + } + + // + // Get the variable data and attributes + // + VariableDataSize = VariableDataBufferSize; + Status = gRT->GetVariable ( + VariableName, + &VendorGuid, + &VariableAttributes, + &VariableDataSize, + VariableData + ); + if (Status == EFI_BUFFER_TOO_SMALL) { + // + // The currently allocated VariableData buffer is too small, + // so we allocate a larger buffer. + // + if (VariableDataBufferSize != 0) { + FreePool (VariableData); + VariableData = NULL; + VariableDataBufferSize = 0; + } + VariableData = AllocatePool (VariableDataSize); + if (VariableData == NULL) { + Status = EFI_OUT_OF_RESOURCES; + break; + } + VariableDataBufferSize = VariableDataSize; + + // + // Try to read the variable again with the larger buffer. + // + Status = gRT->GetVariable ( + VariableName, + &VendorGuid, + &VariableAttributes, + &VariableDataSize, + VariableData + ); + } + if (EFI_ERROR (Status)) { + break; + } + + // + // Run the callback function + // + Status = (*CallbackFunction) ( + Context, + VariableName, + &VendorGuid, + VariableAttributes, + VariableDataSize, + VariableData + ); + if (EFI_ERROR (Status)) { + break; + } + + } + + if (VariableName != NULL) { + FreePool (VariableName); + } + + if (VariableData != NULL) { + FreePool (VariableData); + } + + return Status; +} + + +/** + Iterates all variables found in the variable serialization instance + + @param[in] Handle - Handle for a variable serialization instance + @param[in] CallbackFunction - Function called for each variable instance + @param[in] Context - Passed to each call of CallbackFunction + + @retval RETURN_SUCCESS - All variables were iterated without the + CallbackFunction returning an error + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + iterate through the variables + @return Any of RETURN_ERROR indicates an error reading the variable + or an error was returned from CallbackFunction + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesIterateInstanceVariables ( + IN EFI_HANDLE Handle, + IN VARIABLE_SERIALIZATION_ITERATION_CALLBACK CallbackFunction, + IN VOID *Context + ) +{ + SV_INSTANCE *Instance; + + Instance = SV_FROM_HANDLE (Handle); + + if ((Instance->BufferPtr != NULL) && (Instance->DataSize != 0)) { + return IterateVariablesInBuffer ( + CallbackFunction, + Context, + Instance->BufferPtr, + Instance->DataSize + ); + } else { + return RETURN_SUCCESS; + } +} + + +/** + Sets all variables found in the variable serialization instance + + @param[in] Handle - Handle for a variable serialization instance + + @retval RETURN_SUCCESS - All variables were set successfully + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + set all the variables + @return Any of RETURN_ERROR indicates an error reading the variables + or in attempting to set a variable + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesSetSerializedVariables ( + IN EFI_HANDLE Handle + ) +{ + return SerializeVariablesIterateInstanceVariables ( + Handle, + IterateVariablesCallbackSetSystemVariable, + NULL + ); +} + + +/** + Adds a variable to the variable serialization instance + + @param[in] Handle - Handle for a variable serialization instance + @param[in] VariableName - Refer to RuntimeServices GetVariable + @param[in] VendorGuid - Refer to RuntimeServices GetVariable + @param[in] Attributes - Refer to RuntimeServices GetVariable + @param[in] DataSize - Refer to RuntimeServices GetVariable + @param[in] Data - Refer to RuntimeServices GetVariable + + @retval RETURN_SUCCESS - All variables were set successfully + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + add the variable + @retval RETURN_INVALID_PARAMETER - Handle was not a valid + variable serialization instance or + VariableName, VariableGuid or Data are NULL. + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesAddVariable ( + IN EFI_HANDLE Handle, + IN CHAR16 *VariableName, + IN EFI_GUID *VendorGuid, + IN UINT32 Attributes, + IN UINTN DataSize, + IN VOID *Data + ) +{ + RETURN_STATUS Status; + SV_INSTANCE *Instance; + UINT32 SerializedNameSize; + UINT32 SerializedDataSize; + UINTN SerializedSize; + + Instance = SV_FROM_HANDLE (Handle); + + if ((Instance->Signature != SV_SIGNATURE) || + (VariableName == NULL) || (VendorGuid == NULL) || (Data == NULL)) { + } + + SerializedNameSize = (UINT32) StrSize (VariableName); + + SerializedSize = + sizeof (SerializedNameSize) + + SerializedNameSize + + sizeof (*VendorGuid) + + sizeof (Attributes) + + sizeof (SerializedDataSize) + + DataSize; + + Status = EnsureExtraBufferSpace ( + Instance, + SerializedSize + ); + if (RETURN_ERROR (Status)) { + return Status; + } + + // + // Add name size (UINT32) + // + AppendToBuffer (Instance, (VOID*) &SerializedNameSize, sizeof (SerializedNameSize)); + + // + // Add variable unicode name string + // + AppendToBuffer (Instance, (VOID*) VariableName, SerializedNameSize); + + // + // Add variable GUID + // + AppendToBuffer (Instance, (VOID*) VendorGuid, sizeof (*VendorGuid)); + + // + // Add variable attributes + // + AppendToBuffer (Instance, (VOID*) &Attributes, sizeof (Attributes)); + + // + // Add variable data size (UINT32) + // + SerializedDataSize = (UINT32) DataSize; + AppendToBuffer (Instance, (VOID*) &SerializedDataSize, sizeof (SerializedDataSize)); + + // + // Add variable data + // + AppendToBuffer (Instance, Data, DataSize); + + return RETURN_SUCCESS; +} + + +/** + Serializes the variables known to this instance into the + provided buffer. + + @param[in] Handle - Handle for a variable serialization instance + @param[out] Buffer - A buffer to store the binary representation + of the variables. + @param[in,out] Size - On input this is the size of the buffer. + On output this is the size of the binary representation + of the variables. + + @retval RETURN_SUCCESS - The binary representation was successfully + completed and returned in the buffer. + @retval RETURN_OUT_OF_RESOURCES - There we not enough resources to + save the variables to the buffer. + @retval RETURN_INVALID_PARAMETER - Handle was not a valid + variable serialization instance or + Size or Buffer were NULL. + @retval RETURN_BUFFER_TOO_SMALL - The Buffer size as indicated by + the Size parameter was too small for the serialized + variable data. Size is returned with the required size. + +**/ +RETURN_STATUS +EFIAPI +SerializeVariablesToBuffer ( + IN EFI_HANDLE Handle, + OUT VOID *Buffer, + IN OUT UINTN *Size + ) +{ + SV_INSTANCE *Instance; + + Instance = SV_FROM_HANDLE (Handle); + + if (Size == NULL) { + return RETURN_INVALID_PARAMETER; + } + + if (*Size < Instance->DataSize) { + *Size = Instance->DataSize; + return RETURN_BUFFER_TOO_SMALL; + } + + if (Buffer == NULL) { + return RETURN_INVALID_PARAMETER; + } + + *Size = Instance->DataSize; + CopyMem (Buffer, Instance->BufferPtr, Instance->DataSize); + + return RETURN_SUCCESS; +} + diff --git a/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.h b/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.h new file mode 100644 index 0000000000..4d01fd6e7c --- /dev/null +++ b/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.h @@ -0,0 +1,39 @@ +/** @file + Serialize Variables Library implementation + + Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR> + This program and the accompanying materials + are licensed and made available under the terms and conditions of the BSD License + which accompanies this distribution. The full text of the license may be found at + http://opensource.org/licenses/bsd-license.php + + THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, + WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. + +**/ + +#ifndef __SERIALIZE_VARIABLES_LIB_INSTANCE__ +#define __SERIALIZE_VARIABLES_LIB_INSTANCE__ + +#include <Uefi.h> + +#include <Library/BaseLib.h> +#include <Library/BaseMemoryLib.h> +#include <Library/DebugLib.h> +#include <Library/MemoryAllocationLib.h> +#include <Library/SerializeVariablesLib.h> +#include <Library/UefiBootServicesTableLib.h> +#include <Library/UefiRuntimeServicesTableLib.h> + +#define SV_FROM_HANDLE(a) CR (a, SV_INSTANCE, Signature, SV_SIGNATURE) +#define SV_SIGNATURE SIGNATURE_32 ('S', 'V', 'A', 'R') + +typedef struct { + UINT32 Signature; + VOID *BufferPtr; + UINTN BufferSize; + UINTN DataSize; +} SV_INSTANCE; + +#endif + diff --git a/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.inf b/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.inf new file mode 100644 index 0000000000..b0c12b0ef6 --- /dev/null +++ b/OvmfPkg/Library/SerializeVariablesLib/SerializeVariablesLib.inf @@ -0,0 +1,41 @@ +## @file
+# Serialize Variables Library implementation
+#
+# This library serializes and deserializes UEFI variables
+#
+# Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
+#
+# This program and the accompanying materials
+# are licensed and made available under the terms and conditions of the BSD License
+# which accompanies this distribution. The full text of the license may be found at
+# http://opensource.org/licenses/bsd-license.php
+# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+#
+##
+
+[Defines]
+ INF_VERSION = 0x00010005
+ BASE_NAME = DxeSerializeVariablesLib
+ FILE_GUID = 9515f92a-83ae-45fd-9d2e-e3dc15df52d0
+ MODULE_TYPE = UEFI_DRIVER
+ VERSION_STRING = 1.0
+ LIBRARY_CLASS = SerializeVariablesLib|DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER UEFI_DRIVER
+
+[Sources]
+ SerializeVariablesLib.c
+
+[Packages]
+ MdePkg/MdePkg.dec
+ MdeModulePkg/MdeModulePkg.dec
+ OvmfPkg/OvmfPkg.dec
+ ShellPkg/ShellPkg.dec
+
+[LibraryClasses]
+ BaseLib
+ BaseMemoryLib
+ DebugLib
+ MemoryAllocationLib
+ UefiBootServicesTableLib
+ UefiRuntimeServicesTableLib
+
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