\r
[LibraryClasses.common]\r
## @libraryclass IpIo layer upon EFI IP4 Protocol.\r
- # Ihis library is only intended to be used by UEFI network stack modules.\r
+ # This library is only intended to be used by UEFI network stack modules.\r
IpIoLib|Include/Library/IpIoLib.h\r
\r
## @libraryclass Basic function for UEFI network stack.\r
- # Ihis library is only intended to be used by UEFI network stack modules.\r
+ # This library is only intended to be used by UEFI network stack modules.\r
NetLib|Include/Library/NetLib.h\r
\r
## @libraryclass The helper routines to access UDP service.\r
- # Ihis library is only intended to be used by UEFI network stack modules.\r
+ # This library is only intended to be used by UEFI network stack modules.\r
UdpIoLib|Include/Library/UdpIoLib.h\r
\r
## @libraryclass Defines a set of methods to reset whole system.\r
RecoveryLib|Include/Library/RecoveryLib.h\r
\r
## @libraryclass Basic platform driver override functions.\r
- # Ihis library is only intended to be used by Platform Driver Override Dxe Driver and Application.\r
+ # This library is only intended to be used by Platform Driver Override Dxe Driver and Application.\r
PlatformDriverOverrideLib|Include/Library/PlatformDriverOverrideLib.h\r
\r
## @libraryclass Provides HII related functions.\r
## Include/Guid/SystemNvDataGuid.h\r
gEfiSystemNvDataFvGuid = { 0xFFF12B8D, 0x7696, 0x4C8B, { 0xA9, 0x85, 0x27, 0x47, 0x07, 0x5B, 0x4F, 0x50 }}\r
\r
- ## Alternate Firmware Volume Block Guid specify that the additional \r
- # FVB protocol is installed into FVB handle\r
- ## Include/Guid/AlternateFvBlock.h\r
- gEfiAlternateFvBlockGuid = { 0xF496922D, 0x172F, 0x4BBC, { 0xA1, 0xEB, 0x0E, 0xEB, 0x94, 0x9C, 0x34, 0x86 }}\r
- \r
## Guid specify the device is the console out device.\r
## Include/Guid/ConsoleOutDevice.h\r
gEfiConsoleOutDeviceGuid = { 0xD3B36F2C, 0xD551, 0x11D4, { 0x9A, 0x46, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0x4D }}\r
## Capsule update hob and variable guid\r
## Include/Guid/CapsuleVendor.h\r
gEfiCapsuleVendorGuid = { 0x711C703F, 0xC285, 0x4B10, { 0xA3, 0xB0, 0x36, 0xEC, 0xBD, 0x3C, 0x8B, 0xE2 }}\r
- \r
+ \r
## Guid specifiy the device is the StdErr device.\r
## Include/Guid/StandardErrorDevice.h\r
gEfiStandardErrorDeviceGuid = { 0xD3B36F2D, 0xD551, 0x11D4, { 0x9A, 0x46, 0x00, 0x90, 0x27, 0x3F, 0xC1, 0x4D }}\r
\r
- \r
## Guid acted as variable store header's signature and to specify the variable list entries put in the EFI system table.\r
## Include/Guid/VariableFormat.h\r
gEfiVariableGuid = { 0xddcf3616, 0x3275, 0x4164, { 0x98, 0xb6, 0xfe, 0x85, 0x70, 0x7f, 0xfe, 0x7d }}\r
\r
#include "FaultTolerantWrite.h"\r
\r
+EFI_EVENT mFvbRegistration = NULL;\r
\r
//\r
// Fault Tolerant Write Protocol API\r
return Status;\r
}\r
\r
-/**\r
- This function is the entry point of the Fault Tolerant Write driver.\r
-\r
- @param ImageHandle A handle for the image that is initializing this driver\r
- @param SystemTable A pointer to the EFI system table\r
-\r
- @return EFI_SUCCESS FTW has finished the initialization\r
- @retval EFI_NOT_FOUND Locate FVB protocol error\r
- @retval EFI_OUT_OF_RESOURCES Allocate memory error\r
- @retval EFI_VOLUME_CORRUPTED Firmware volume is error\r
- @retval EFI_ABORTED FTW initialization error\r
-\r
-**/\r
-EFI_STATUS\r
+VOID\r
EFIAPI\r
-InitializeFaultTolerantWrite (\r
- IN EFI_HANDLE ImageHandle,\r
- IN EFI_SYSTEM_TABLE *SystemTable\r
+FvbNotificationEvent (\r
+ IN EFI_EVENT Event,\r
+ IN VOID *Context\r
)\r
{\r
- EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;\r
- UINTN Index;\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_FIRMWARE_VOLUME_HEADER *FwVolHeader;\r
- EFI_PHYSICAL_ADDRESS BaseAddress;\r
+ EFI_FVB_ATTRIBUTES_2 Attributes;\r
EFI_FTW_DEVICE *FtwDevice;\r
- EFI_FAULT_TOLERANT_WRITE_HEADER *FtwHeader;\r
- UINTN Length;\r
- EFI_STATUS Status;\r
- UINTN Offset;\r
EFI_FV_BLOCK_MAP_ENTRY *FvbMapEntry;\r
UINT32 LbaIndex;\r
+ UINTN Length;\r
+ EFI_FAULT_TOLERANT_WRITE_HEADER *FtwHeader;\r
+ UINTN Offset;\r
EFI_HANDLE FvbHandle;\r
\r
- //\r
- // Allocate Private data of this driver,\r
- // INCLUDING THE FtwWorkSpace[FTW_WORK_SPACE_SIZE].\r
- //\r
+ FtwDevice = (EFI_FTW_DEVICE *)Context;\r
FvbHandle = NULL;\r
- FtwDevice = NULL;\r
- FtwDevice = AllocatePool (sizeof (EFI_FTW_DEVICE) + PcdGet32 (PcdFlashNvStorageFtwWorkingSize));\r
- if (FtwDevice == NULL) {\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
-\r
- ZeroMem (FtwDevice, sizeof (EFI_FTW_DEVICE));\r
- FtwDevice->Signature = FTW_DEVICE_SIGNATURE;\r
+ Fvb = NULL;\r
\r
//\r
- // Initialize other parameters, and set WorkSpace as FTW_ERASED_BYTE.\r
- //\r
-\r
- FtwDevice->WorkSpaceAddress = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageFtwWorkingBase);\r
- FtwDevice->WorkSpaceLength = (UINTN) PcdGet32 (PcdFlashNvStorageFtwWorkingSize);\r
-\r
- FtwDevice->SpareAreaAddress = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageFtwSpareBase);\r
- FtwDevice->SpareAreaLength = (UINTN) PcdGet32 (PcdFlashNvStorageFtwSpareSize);\r
-\r
- if ((FtwDevice->WorkSpaceLength == 0) || (FtwDevice->SpareAreaLength == 0)) {\r
- DEBUG ((EFI_D_ERROR, "Ftw: Workspace or Spare block does not exist!\n"));\r
- FreePool (FtwDevice);\r
- return EFI_OUT_OF_RESOURCES;\r
- }\r
- //\r
- // Locate FVB protocol by handle\r
+ // Locate all handles of Fvb protocol\r
//\r
Status = gBS->LocateHandleBuffer (\r
- ByProtocol,\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- NULL,\r
- &HandleCount,\r
- &HandleBuffer\r
- );\r
+ ByProtocol,\r
+ &gEfiFirmwareVolumeBlockProtocolGuid,\r
+ NULL,\r
+ &HandleCount,\r
+ &HandleBuffer\r
+ );\r
if (EFI_ERROR (Status)) {\r
- FreePool (FtwDevice);\r
- return EFI_NOT_FOUND;\r
- }\r
-\r
- if (HandleCount <= 0) {\r
- FreePool (FtwDevice);\r
- return EFI_NOT_FOUND;\r
+ return;\r
}\r
\r
- Fvb = NULL;\r
- FtwDevice->FtwFvBlock = NULL;\r
- FtwDevice->FtwBackupFvb = NULL;\r
- FtwDevice->FtwWorkSpaceLba = (EFI_LBA) (-1);\r
- FtwDevice->FtwSpareLba = (EFI_LBA) (-1);\r
+ //\r
+ // Get the FVB to access variable store\r
+ //\r
for (Index = 0; Index < HandleCount; Index += 1) {\r
Status = gBS->HandleProtocol (\r
- HandleBuffer[Index],\r
- &gEfiFirmwareVolumeBlockProtocolGuid,\r
- (VOID **) &Fvb\r
- );\r
+ HandleBuffer[Index],\r
+ &gEfiFirmwareVolumeBlockProtocolGuid,\r
+ (VOID **) &Fvb\r
+ );\r
if (EFI_ERROR (Status)) {\r
- FreePool (FtwDevice);\r
- return Status;\r
+ Status = EFI_NOT_FOUND;\r
+ break;\r
}\r
\r
- Status = Fvb->GetPhysicalAddress (Fvb, &BaseAddress);\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
+ // 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
- FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) BaseAddress);\r
-\r
- if ((FtwDevice->WorkSpaceAddress >= BaseAddress) &&\r
- ((FtwDevice->WorkSpaceAddress + FtwDevice->WorkSpaceLength) <= (BaseAddress + FwVolHeader->FvLength))\r
- ) {\r
+ FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);\r
+ if ((FtwDevice->FtwFvBlock == NULL) && (FtwDevice->WorkSpaceAddress >= FvbBaseAddress) &&\r
+ ((FtwDevice->WorkSpaceAddress + FtwDevice->WorkSpaceLength) <= (FvbBaseAddress + FwVolHeader->FvLength))\r
+ ) {\r
FtwDevice->FtwFvBlock = Fvb;\r
//\r
// To get the LBA of work space\r
//\r
FvbMapEntry = &FwVolHeader->BlockMap[0];\r
for (LbaIndex = 1; LbaIndex <= FvbMapEntry->NumBlocks; LbaIndex += 1) {\r
- if ((FtwDevice->WorkSpaceAddress >= (BaseAddress + FvbMapEntry->Length * (LbaIndex - 1)))\r
- && (FtwDevice->WorkSpaceAddress < (BaseAddress + FvbMapEntry->Length * LbaIndex))) {\r
+ if ((FtwDevice->WorkSpaceAddress >= (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)))\r
+ && (FtwDevice->WorkSpaceAddress < (FvbBaseAddress + FvbMapEntry->Length * LbaIndex))) {\r
FtwDevice->FtwWorkSpaceLba = LbaIndex - 1;\r
//\r
// Get the Work space size and Base(Offset)\r
//\r
FtwDevice->FtwWorkSpaceSize = FtwDevice->WorkSpaceLength;\r
- FtwDevice->FtwWorkSpaceBase = (UINTN) (FtwDevice->WorkSpaceAddress - (BaseAddress + FvbMapEntry->Length * (LbaIndex - 1)));\r
+ FtwDevice->FtwWorkSpaceBase = (UINTN) (FtwDevice->WorkSpaceAddress - (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)));\r
break;\r
}\r
}\r
}\r
}\r
-\r
- if ((FtwDevice->SpareAreaAddress >= BaseAddress) &&\r
- ((FtwDevice->SpareAreaAddress + FtwDevice->SpareAreaLength) <= (BaseAddress + FwVolHeader->FvLength))\r
- ) {\r
+ \r
+ if ((FtwDevice->FtwBackupFvb == NULL) && (FtwDevice->SpareAreaAddress >= FvbBaseAddress) &&\r
+ ((FtwDevice->SpareAreaAddress + FtwDevice->SpareAreaLength) <= (FvbBaseAddress + FwVolHeader->FvLength))\r
+ ) {\r
FtwDevice->FtwBackupFvb = Fvb;\r
//\r
// To get the LBA of spare\r
//\r
FvbMapEntry = &FwVolHeader->BlockMap[0];\r
for (LbaIndex = 1; LbaIndex <= FvbMapEntry->NumBlocks; LbaIndex += 1) {\r
- if ((FtwDevice->SpareAreaAddress >= (BaseAddress + FvbMapEntry->Length * (LbaIndex - 1)))\r
- && (FtwDevice->SpareAreaAddress < (BaseAddress + FvbMapEntry->Length * LbaIndex))) {\r
+ if ((FtwDevice->SpareAreaAddress >= (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)))\r
+ && (FtwDevice->SpareAreaAddress < (FvbBaseAddress + FvbMapEntry->Length * LbaIndex))) {\r
//\r
// Get the NumberOfSpareBlock and BlockSize\r
//\r
- FtwDevice->FtwSpareLba = LbaIndex - 1;\r
- FtwDevice->BlockSize = FvbMapEntry->Length;\r
+ FtwDevice->FtwSpareLba = LbaIndex - 1;\r
+ FtwDevice->BlockSize = FvbMapEntry->Length;\r
FtwDevice->NumberOfSpareBlock = FtwDevice->SpareAreaLength / FtwDevice->BlockSize;\r
//\r
// Check the range of spare area to make sure that it's in FV range\r
//\r
if ((FtwDevice->FtwSpareLba + FtwDevice->NumberOfSpareBlock) > FvbMapEntry->NumBlocks) {\r
DEBUG ((EFI_D_ERROR, "Ftw: Spare area is out of FV range\n"));\r
- FreePool (FtwDevice);\r
- return EFI_ABORTED;\r
+ ASSERT (FALSE);\r
+ return;\r
}\r
break;\r
}\r
}\r
}\r
\r
+ if ((FtwDevice->FtwBackupFvb == NULL) || (FtwDevice->FtwFvBlock == NULL) ||\r
+ (FtwDevice->FtwWorkSpaceLba == (EFI_LBA) (-1)) || (FtwDevice->FtwSpareLba == (EFI_LBA) (-1))) {\r
+ return;\r
+ }\r
+\r
+ DEBUG ((EFI_D_INFO, "Ftw: Working and spare FVB is ready\n"));\r
//\r
// Calculate the start LBA of working block. Working block is an area which\r
// contains working space in its last block and has the same size as spare\r
// working space.\r
//\r
FtwDevice->FtwWorkBlockLba = FtwDevice->FtwWorkSpaceLba - FtwDevice->NumberOfSpareBlock + 1;\r
- if ((INT64) (FtwDevice->FtwWorkBlockLba) < 0) {\r
- DEBUG ((EFI_D_ERROR, "Ftw: The spare block range is too large than the working block range!\n"));\r
- FreePool (FtwDevice);\r
- return EFI_ABORTED;\r
- }\r
+ ASSERT ((INT64) (FtwDevice->FtwWorkBlockLba) >= 0); \r
\r
- if ((FtwDevice->FtwFvBlock == NULL) ||\r
- (FtwDevice->FtwBackupFvb == NULL) ||\r
- (FtwDevice->FtwWorkSpaceLba == (EFI_LBA) (-1)) ||\r
- (FtwDevice->FtwSpareLba == (EFI_LBA) (-1))\r
- ) {\r
- DEBUG ((EFI_D_ERROR, "Ftw: Working or spare FVB not ready\n"));\r
- FreePool (FtwDevice);\r
- return EFI_ABORTED;\r
- }\r
//\r
// Initialize other parameters, and set WorkSpace as FTW_ERASED_BYTE.\r
//\r
// Refresh the working space data from working block\r
//\r
Status = WorkSpaceRefresh (FtwDevice);\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
+ ASSERT_EFI_ERROR (Status);\r
//\r
// If the working block workspace is not valid, try the spare block\r
//\r
//\r
Length = FtwDevice->FtwWorkSpaceSize;\r
Status = FtwDevice->FtwBackupFvb->Read (\r
- FtwDevice->FtwBackupFvb,\r
- FtwDevice->FtwSpareLba,\r
- FtwDevice->FtwWorkSpaceBase,\r
- &Length,\r
- FtwDevice->FtwWorkSpace\r
- );\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
+ FtwDevice->FtwBackupFvb,\r
+ FtwDevice->FtwSpareLba,\r
+ FtwDevice->FtwWorkSpaceBase,\r
+ &Length,\r
+ FtwDevice->FtwWorkSpace\r
+ );\r
+ ASSERT_EFI_ERROR (Status);\r
+\r
//\r
// If spare block is valid, then replace working block content.\r
//\r
// Refresh work space.\r
//\r
Status = WorkSpaceRefresh (FtwDevice);\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
+ ASSERT_EFI_ERROR (Status);\r
} else {\r
DEBUG ((EFI_D_ERROR, "Ftw: Both are invalid, init workspace\n"));\r
//\r
// Initialize the work space\r
//\r
Status = FtwReclaimWorkSpace (FtwDevice, FALSE);\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
+ ASSERT_EFI_ERROR (Status);\r
}\r
}\r
-\r
//\r
// If the FtwDevice->FtwLastWriteRecord is 1st record of write header &&\r
- // (! SpareComplete) THEN call Abort().\r
+ // (! SpareComplete) THEN call Abort().\r
//\r
if ((FtwDevice->FtwLastWriteHeader->HeaderAllocated == FTW_VALID_STATE) &&\r
- (FtwDevice->FtwLastWriteRecord->SpareComplete != FTW_VALID_STATE) &&\r
- IsFirstRecordOfWrites (FtwDevice->FtwLastWriteHeader, FtwDevice->FtwLastWriteRecord)\r
- ) {\r
+ (FtwDevice->FtwLastWriteRecord->SpareComplete != FTW_VALID_STATE) &&\r
+ IsFirstRecordOfWrites (FtwDevice->FtwLastWriteHeader, FtwDevice->FtwLastWriteRecord)\r
+ ) {\r
DEBUG ((EFI_D_ERROR, "Ftw: Init.. find first record not SpareCompleted, abort()\n"));\r
FtwAbort (&FtwDevice->FtwInstance);\r
}\r
// call Abort() to set the Header->Complete FLAG.\r
//\r
if ((FtwDevice->FtwLastWriteHeader->Complete != FTW_VALID_STATE) &&\r
- (FtwDevice->FtwLastWriteRecord->DestinationComplete == FTW_VALID_STATE) &&\r
- IsLastRecordOfWrites (FtwDevice->FtwLastWriteHeader, FtwDevice->FtwLastWriteRecord)\r
- ) {\r
+ (FtwDevice->FtwLastWriteRecord->DestinationComplete == FTW_VALID_STATE) &&\r
+ IsLastRecordOfWrites (FtwDevice->FtwLastWriteHeader, FtwDevice->FtwLastWriteRecord)\r
+ ) {\r
DEBUG ((EFI_D_ERROR, "Ftw: Init.. find last record completed but header not, abort()\n"));\r
FtwAbort (&FtwDevice->FtwInstance);\r
}\r
if (FtwDevice->FtwWorkSpace[Offset] != FTW_ERASED_BYTE) {\r
Offset += WRITE_TOTAL_SIZE (FtwHeader->NumberOfWrites, FtwHeader->PrivateDataSize);\r
}\r
-\r
- if (!IsErasedFlashBuffer (\r
- FtwDevice->FtwWorkSpace + Offset,\r
- FtwDevice->FtwWorkSpaceSize - Offset\r
- )) {\r
+ \r
+ if (!IsErasedFlashBuffer (FtwDevice->FtwWorkSpace + Offset, FtwDevice->FtwWorkSpaceSize - Offset)) {\r
Status = FtwReclaimWorkSpace (FtwDevice, TRUE);\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
+ ASSERT_EFI_ERROR (Status);\r
}\r
+\r
//\r
// Restart if it's boot block\r
//\r
if ((FtwDevice->FtwLastWriteHeader->Complete != FTW_VALID_STATE) &&\r
- (FtwDevice->FtwLastWriteRecord->SpareComplete == FTW_VALID_STATE)\r
- ) {\r
+ (FtwDevice->FtwLastWriteRecord->SpareComplete == FTW_VALID_STATE)\r
+ ) {\r
if (FtwDevice->FtwLastWriteRecord->BootBlockUpdate == FTW_VALID_STATE) {\r
Status = FlushSpareBlockToBootBlock (FtwDevice);\r
DEBUG ((EFI_D_ERROR, "Ftw: Restart boot block update - %r\n", Status));\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
- \r
+ ASSERT_EFI_ERROR (Status);\r
FtwAbort (&FtwDevice->FtwInstance);\r
} else {\r
//\r
if (FvbHandle != NULL) {\r
Status = FtwRestart (&FtwDevice->FtwInstance, FvbHandle);\r
DEBUG ((EFI_D_ERROR, "FtwLite: Restart last write - %r\n", Status));\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
- }\r
+ ASSERT_EFI_ERROR (Status);\r
}\r
FtwAbort (&FtwDevice->FtwInstance);\r
}\r
}\r
-\r
//\r
// Hook the protocol API\r
//\r
- FtwDevice->FtwInstance.GetMaxBlockSize = FtwGetMaxBlockSize;\r
- FtwDevice->FtwInstance.Allocate = FtwAllocate;\r
- FtwDevice->FtwInstance.Write = FtwWrite;\r
- FtwDevice->FtwInstance.Restart = FtwRestart;\r
- FtwDevice->FtwInstance.Abort = FtwAbort;\r
- FtwDevice->FtwInstance.GetLastWrite = FtwGetLastWrite;\r
-\r
+ FtwDevice->FtwInstance.GetMaxBlockSize = FtwGetMaxBlockSize;\r
+ FtwDevice->FtwInstance.Allocate = FtwAllocate;\r
+ FtwDevice->FtwInstance.Write = FtwWrite;\r
+ FtwDevice->FtwInstance.Restart = FtwRestart;\r
+ FtwDevice->FtwInstance.Abort = FtwAbort;\r
+ FtwDevice->FtwInstance.GetLastWrite = FtwGetLastWrite;\r
+ \r
//\r
// Install protocol interface\r
//\r
Status = gBS->InstallProtocolInterface (\r
- &FtwDevice->Handle,\r
- &gEfiFaultTolerantWriteProtocolGuid,\r
- EFI_NATIVE_INTERFACE,\r
- &FtwDevice->FtwInstance\r
- );\r
- if (EFI_ERROR (Status)) {\r
- goto Recovery;\r
+ &FtwDevice->Handle,\r
+ &gEfiFaultTolerantWriteProtocolGuid,\r
+ EFI_NATIVE_INTERFACE,\r
+ &FtwDevice->FtwInstance\r
+ );\r
+\r
+ ASSERT_EFI_ERROR (Status);\r
+ \r
+ //\r
+ // Close the notify event to avoid install FaultTolerantWriteProtocol again.\r
+ //\r
+ Status = gBS->CloseEvent (Event); \r
+ ASSERT_EFI_ERROR (Status);\r
+ \r
+ return;\r
+}\r
+\r
+/**\r
+ This function is the entry point of the Fault Tolerant Write driver.\r
+\r
+ @param ImageHandle A handle for the image that is initializing this driver\r
+ @param SystemTable A pointer to the EFI system table\r
+\r
+ @return EFI_SUCCESS FTW has finished the initialization\r
+ @retval EFI_NOT_FOUND Locate FVB protocol error\r
+ @retval EFI_OUT_OF_RESOURCES Allocate memory error\r
+ @retval EFI_VOLUME_CORRUPTED Firmware volume is error\r
+ @retval EFI_ABORTED FTW initialization error\r
+\r
+**/\r
+EFI_STATUS\r
+EFIAPI\r
+InitializeFaultTolerantWrite (\r
+ IN EFI_HANDLE ImageHandle,\r
+ IN EFI_SYSTEM_TABLE *SystemTable\r
+ )\r
+{\r
+ EFI_FTW_DEVICE *FtwDevice;\r
+\r
+ //\r
+ // Allocate Private data of this driver,\r
+ // INCLUDING THE FtwWorkSpace[FTW_WORK_SPACE_SIZE].\r
+ //\r
+ FtwDevice = NULL;\r
+ FtwDevice = AllocateZeroPool (sizeof (EFI_FTW_DEVICE) + PcdGet32 (PcdFlashNvStorageFtwWorkingSize));\r
+ if (FtwDevice == NULL) {\r
+ return EFI_OUT_OF_RESOURCES;\r
}\r
\r
- return EFI_SUCCESS;\r
+ ZeroMem (FtwDevice, sizeof (EFI_FTW_DEVICE));\r
+ FtwDevice->Signature = FTW_DEVICE_SIGNATURE;\r
\r
-Recovery:\r
+ //\r
+ // Initialize other parameters, and set WorkSpace as FTW_ERASED_BYTE.\r
+ //\r
+\r
+ FtwDevice->WorkSpaceAddress = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageFtwWorkingBase);\r
+ FtwDevice->WorkSpaceLength = (UINTN) PcdGet32 (PcdFlashNvStorageFtwWorkingSize);\r
+\r
+ FtwDevice->SpareAreaAddress = (EFI_PHYSICAL_ADDRESS) PcdGet32 (PcdFlashNvStorageFtwSpareBase);\r
+ FtwDevice->SpareAreaLength = (UINTN) PcdGet32 (PcdFlashNvStorageFtwSpareSize);\r
\r
- if (FtwDevice != NULL) {\r
+ if ((FtwDevice->WorkSpaceLength == 0) || (FtwDevice->SpareAreaLength == 0)) {\r
+ DEBUG ((EFI_D_ERROR, "Ftw: Workspace or Spare block does not exist!\n"));\r
FreePool (FtwDevice);\r
+ return EFI_OUT_OF_RESOURCES;\r
}\r
+ FtwDevice->FtwFvBlock = NULL;\r
+ FtwDevice->FtwBackupFvb = NULL;\r
+ FtwDevice->FtwWorkSpaceLba = (EFI_LBA) (-1);\r
+ FtwDevice->FtwSpareLba = (EFI_LBA) (-1);\r
\r
- DEBUG ((EFI_D_ERROR, "Ftw: Severe Error occurs, need to recovery\n"));\r
+ //\r
+ // Register FvbNotificationEvent () notify function.\r
+ // \r
+ EfiCreateProtocolNotifyEvent (\r
+ &gEfiFirmwareVolumeBlockProtocolGuid,\r
+ TPL_CALLBACK,\r
+ FvbNotificationEvent,\r
+ (VOID *)FtwDevice,\r
+ &mFvbRegistration\r
+ );\r
\r
- return EFI_VOLUME_CORRUPTED;\r
+ return EFI_SUCCESS;\r
}\r
projects / mirror_edk2.git / commitdiff