If one of them is not satisfied, FtwWrite may fail.\r
Usually, Spare area only takes one block. That's SpareAreaLength = BlockSize, NumberOfSpareBlock = 1.\r
\r
-Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>\r
+Copyright (c) 2010 - 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
\r
**/\r
\r
+#include <PiSmm.h>\r
#include <Library/SmmServicesTableLib.h>\r
-#include "FaultTolerantWrite.h"\r
-#include <Protocol/SmmFirmwareVolumeBlock.h>\r
#include <Protocol/SmmSwapAddressRange.h>\r
-#include <Protocol/SmmFaultTolerantWrite.h>\r
+#include "FaultTolerantWrite.h"\r
+#include "FaultTolerantWriteSmmCommon.h"\r
\r
EFI_EVENT mFvbRegistration = NULL;\r
-EFI_FTW_DEVICE *gFtwDevice = NULL;\r
+EFI_FTW_DEVICE *mFtwDevice = NULL;\r
\r
/**\r
Retrive the SMM FVB protocol interface by HANDLE.\r
}\r
\r
\r
+/**\r
+ Get the handle of the SMM FVB protocol by the FVB base address and attributes.\r
+\r
+ @param[in] Address The base address of SMM FVB protocol.\r
+ @param[in] Attributes The attributes of the SMM FVB protocol.\r
+ @param[out] SmmFvbHandle The handle of the SMM FVB protocol.\r
+\r
+ @retval EFI_SUCCESS The FVB handle is found.\r
+ @retval EFI_ABORTED The FVB protocol is not found.\r
+\r
+**/\r
+EFI_STATUS\r
+GetFvbByAddressAndAttribute (\r
+ IN EFI_PHYSICAL_ADDRESS Address,\r
+ IN EFI_FVB_ATTRIBUTES_2 Attributes,\r
+ OUT EFI_HANDLE *SmmFvbHandle\r
+ )\r
+{\r
+ EFI_STATUS Status;\r
+ EFI_HANDLE *HandleBuffer;\r
+ UINTN HandleCount;\r
+ UINTN Index;\r
+ EFI_PHYSICAL_ADDRESS FvbBaseAddress;\r
+ EFI_FVB_ATTRIBUTES_2 FvbAttributes;\r
+ EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
+\r
+ //\r
+ // Locate all handles of SMM Fvb protocol.\r
+ //\r
+ Status = GetFvbCountAndBuffer (&HandleCount, &HandleBuffer);\r
+ if (EFI_ERROR (Status)) {\r
+ return EFI_ABORTED;\r
+ }\r
+ \r
+ //\r
+ // Find the proper SMM Fvb handle by the address and attributes.\r
+ //\r
+ for (Index = 0; Index < HandleCount; Index++) {\r
+ Status = FtwGetFvbByHandle (HandleBuffer[Index], &Fvb);\r
+ if (EFI_ERROR (Status)) {\r
+ break;\r
+ }\r
+ //\r
+ // Compare the address.\r
+ //\r
+ Status = Fvb->GetPhysicalAddress (Fvb, &FvbBaseAddress);\r
+ if (EFI_ERROR (Status)) {\r
+ continue;\r
+ }\r
+ if (Address != FvbBaseAddress) {\r
+ continue;\r
+ }\r
+\r
+ //\r
+ // Compare the attribute.\r
+ //\r
+ Status = Fvb->GetAttributes (Fvb, &FvbAttributes);\r
+ if (EFI_ERROR (Status)) {\r
+ continue;\r
+ }\r
+ if (Attributes != FvbAttributes) {\r
+ continue;\r
+ }\r
+\r
+ //\r
+ // Found the proper FVB handle.\r
+ //\r
+ *SmmFvbHandle = HandleBuffer[Index];\r
+ FreePool (HandleBuffer);\r
+ return EFI_SUCCESS;\r
+ }\r
+\r
+ FreePool (HandleBuffer);\r
+ return EFI_ABORTED;\r
+}\r
+\r
+/**\r
+ Communication service SMI Handler entry.\r
+\r
+ This SMI handler provides services for the fault tolerant write wrapper driver.\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 be conveyed\r
+ 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
+SmmFaultTolerantWriteHandler (\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_FTW_COMMUNICATE_FUNCTION_HEADER *SmmFtwFunctionHeader;\r
+ SMM_FTW_GET_MAX_BLOCK_SIZE_HEADER *SmmGetMaxBlockSizeHeader;\r
+ SMM_FTW_ALLOCATE_HEADER *SmmFtwAllocateHeader;\r
+ SMM_FTW_WRITE_HEADER *SmmFtwWriteHeader;\r
+ SMM_FTW_RESTART_HEADER *SmmFtwRestartHeader;\r
+ SMM_FTW_GET_LAST_WRITE_HEADER *SmmFtwGetLastWriteHeader;\r
+ VOID *PrivateData;\r
+ EFI_HANDLE SmmFvbHandle;\r
+\r
+ ASSERT (CommBuffer != NULL);\r
+ ASSERT (CommBufferSize != NULL);\r
+\r
+ SmmFtwFunctionHeader = (SMM_FTW_COMMUNICATE_FUNCTION_HEADER *)CommBuffer;\r
+ switch (SmmFtwFunctionHeader->Function) {\r
+ case FTW_FUNCTION_GET_MAX_BLOCK_SIZE:\r
+ SmmGetMaxBlockSizeHeader = (SMM_FTW_GET_MAX_BLOCK_SIZE_HEADER *) SmmFtwFunctionHeader->Data; \r
+ Status = FtwGetMaxBlockSize (\r
+ &mFtwDevice->FtwInstance,\r
+ &SmmGetMaxBlockSizeHeader->BlockSize\r
+ );\r
+ break;\r
+ \r
+ case FTW_FUNCTION_ALLOCATE:\r
+ SmmFtwAllocateHeader = (SMM_FTW_ALLOCATE_HEADER *) SmmFtwFunctionHeader->Data;\r
+ Status = FtwAllocate (\r
+ &mFtwDevice->FtwInstance,\r
+ &SmmFtwAllocateHeader->CallerId,\r
+ SmmFtwAllocateHeader->PrivateDataSize,\r
+ SmmFtwAllocateHeader->NumberOfWrites\r
+ );\r
+ break;\r
+ \r
+ case FTW_FUNCTION_WRITE:\r
+ SmmFtwWriteHeader = (SMM_FTW_WRITE_HEADER *) SmmFtwFunctionHeader->Data;\r
+ if (SmmFtwWriteHeader->PrivateDataSize == 0) {\r
+ PrivateData = NULL;\r
+ } else {\r
+ PrivateData = (VOID *)&SmmFtwWriteHeader->Data[SmmFtwWriteHeader->Length];\r
+ }\r
+ Status = GetFvbByAddressAndAttribute (\r
+ SmmFtwWriteHeader->FvbBaseAddress, \r
+ SmmFtwWriteHeader->FvbAttributes,\r
+ &SmmFvbHandle\r
+ );\r
+ if (!EFI_ERROR (Status)) {\r
+ Status = FtwWrite(\r
+ &mFtwDevice->FtwInstance,\r
+ SmmFtwWriteHeader->Lba,\r
+ SmmFtwWriteHeader->Offset,\r
+ SmmFtwWriteHeader->Length,\r
+ PrivateData,\r
+ SmmFvbHandle,\r
+ SmmFtwWriteHeader->Data\r
+ );\r
+ }\r
+ break;\r
+ \r
+ case FTW_FUNCTION_RESTART:\r
+ SmmFtwRestartHeader = (SMM_FTW_RESTART_HEADER *) SmmFtwFunctionHeader->Data;\r
+ Status = GetFvbByAddressAndAttribute (\r
+ SmmFtwRestartHeader->FvbBaseAddress, \r
+ SmmFtwRestartHeader->FvbAttributes,\r
+ &SmmFvbHandle\r
+ ); \r
+ if (!EFI_ERROR (Status)) {\r
+ Status = FtwRestart (&mFtwDevice->FtwInstance, SmmFvbHandle);\r
+ }\r
+ break;\r
+\r
+ case FTW_FUNCTION_ABORT:\r
+ Status = FtwAbort (&mFtwDevice->FtwInstance);\r
+ break;\r
+ \r
+ case FTW_FUNCTION_GET_LAST_WRITE:\r
+ SmmFtwGetLastWriteHeader = (SMM_FTW_GET_LAST_WRITE_HEADER *) SmmFtwFunctionHeader->Data;\r
+ Status = FtwGetLastWrite (\r
+ &mFtwDevice->FtwInstance,\r
+ &SmmFtwGetLastWriteHeader->CallerId,\r
+ &SmmFtwGetLastWriteHeader->Lba,\r
+ &SmmFtwGetLastWriteHeader->Offset,\r
+ &SmmFtwGetLastWriteHeader->Length,\r
+ &SmmFtwGetLastWriteHeader->PrivateDataSize,\r
+ (VOID *)SmmFtwGetLastWriteHeader->Data,\r
+ &SmmFtwGetLastWriteHeader->Complete\r
+ );\r
+ break;\r
+\r
+ default:\r
+ ASSERT (FALSE);\r
+ Status = EFI_UNSUPPORTED;\r
+ }\r
+\r
+ SmmFtwFunctionHeader->ReturnStatus = Status;\r
+\r
+ return EFI_SUCCESS;\r
+}\r
+\r
+\r
/**\r
SMM Firmware Volume Block Protocol notification event handler.\r
\r
{\r
EFI_STATUS Status;\r
EFI_SMM_FAULT_TOLERANT_WRITE_PROTOCOL *FtwProtocol;\r
+ EFI_HANDLE SmmFtwHandle;\r
\r
//\r
// Just return to avoid install SMM FaultTolerantWriteProtocol again\r
//\r
// Found proper FVB protocol and initialize FtwDevice for protocol installation\r
//\r
- Status = InitFtwProtocol (gFtwDevice);\r
+ Status = InitFtwProtocol (mFtwDevice);\r
if (EFI_ERROR(Status)) {\r
return Status;\r
}\r
// Install protocol interface\r
//\r
Status = gSmst->SmmInstallProtocolInterface (\r
- &gFtwDevice->Handle,\r
+ &mFtwDevice->Handle,\r
&gEfiSmmFaultTolerantWriteProtocolGuid,\r
EFI_NATIVE_INTERFACE,\r
- &gFtwDevice->FtwInstance\r
+ &mFtwDevice->FtwInstance\r
);\r
ASSERT_EFI_ERROR (Status); \r
+\r
+ //\r
+ // Notify the Ftw wrapper driver SMM Ftw is ready\r
+ //\r
+ SmmFtwHandle = NULL;\r
+ Status = gBS->InstallProtocolInterface (\r
+ &SmmFtwHandle,\r
+ &gEfiSmmFaultTolerantWriteProtocolGuid,\r
+ EFI_NATIVE_INTERFACE,\r
+ NULL\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
\r
return EFI_SUCCESS;\r
}\r
)\r
{\r
EFI_STATUS Status;\r
-\r
+ EFI_HANDLE FtwHandle;\r
+ \r
//\r
// Allocate private data structure for SMM FTW protocol and do some initialization\r
//\r
- Status = InitFtwDevice (&gFtwDevice);\r
+ Status = InitFtwDevice (&mFtwDevice);\r
if (EFI_ERROR(Status)) {\r
return Status;\r
}\r
ASSERT_EFI_ERROR (Status);\r
\r
FvbNotificationEvent (NULL, NULL, NULL);\r
+\r
+ ///\r
+ /// Register SMM FTW SMI handler\r
+ ///\r
+ Status = gSmst->SmiHandlerRegister (SmmFaultTolerantWriteHandler, &gEfiSmmFaultTolerantWriteProtocolGuid, &FtwHandle);\r
+ ASSERT_EFI_ERROR (Status);\r
\r
return EFI_SUCCESS;\r
}\r
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