| /** @file | |
| Copyright (c) 2013-2016 Intel Corporation. | |
| 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 "FwBlockService.h" | |
| ESAL_FWB_GLOBAL *mFvbModuleGlobal; | |
| EFI_FW_VOL_BLOCK_DEVICE mFvbDeviceTemplate = { | |
| FVB_DEVICE_SIGNATURE, // Signature | |
| // | |
| // FV_DEVICE_PATH FvDevicePath | |
| // | |
| { | |
| { | |
| { | |
| HARDWARE_DEVICE_PATH, | |
| HW_MEMMAP_DP, | |
| { | |
| (UINT8)(sizeof (MEMMAP_DEVICE_PATH)), | |
| (UINT8)(sizeof (MEMMAP_DEVICE_PATH) >> 8) | |
| } | |
| }, | |
| EfiMemoryMappedIO, | |
| (EFI_PHYSICAL_ADDRESS) 0, | |
| (EFI_PHYSICAL_ADDRESS) 0 | |
| }, | |
| { | |
| END_DEVICE_PATH_TYPE, | |
| END_ENTIRE_DEVICE_PATH_SUBTYPE, | |
| { | |
| END_DEVICE_PATH_LENGTH, | |
| 0 | |
| } | |
| } | |
| }, | |
| // | |
| // UEFI_FV_DEVICE_PATH UefiFvDevicePath | |
| // | |
| { | |
| { | |
| { | |
| MEDIA_DEVICE_PATH, | |
| MEDIA_PIWG_FW_VOL_DP, | |
| { | |
| (UINT8)(sizeof (MEDIA_FW_VOL_DEVICE_PATH)), | |
| (UINT8)(sizeof (MEDIA_FW_VOL_DEVICE_PATH) >> 8) | |
| } | |
| }, | |
| { 0 } | |
| }, | |
| { | |
| END_DEVICE_PATH_TYPE, | |
| END_ENTIRE_DEVICE_PATH_SUBTYPE, | |
| { | |
| END_DEVICE_PATH_LENGTH, | |
| 0 | |
| } | |
| } | |
| }, | |
| 0, // Instance | |
| // | |
| // EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL FwVolBlockInstance | |
| // | |
| { | |
| FvbProtocolGetAttributes, | |
| FvbProtocolSetAttributes, | |
| FvbProtocolGetPhysicalAddress, | |
| FvbProtocolGetBlockSize, | |
| FvbProtocolRead, | |
| FvbProtocolWrite, | |
| FvbProtocolEraseBlocks, | |
| NULL | |
| } | |
| }; | |
| UINT32 mInSmmMode = 0; | |
| EFI_SMM_SYSTEM_TABLE2* mSmst = NULL; | |
| VOID | |
| PublishFlashDeviceInfo ( | |
| IN SPI_INIT_TABLE *Found | |
| ) | |
| /*++ | |
| Routine Description: | |
| Publish info on found flash device to other drivers via PcdSpiFlashDeviceSize. | |
| Arguments: | |
| Found - Pointer to entry in mSpiInitTable for found flash part. | |
| Returns: | |
| None | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| // | |
| // Publish Byte Size of found flash device. | |
| // | |
| Status = PcdSet32S (PcdSpiFlashDeviceSize, (UINT32)(Found->BiosStartOffset + Found->BiosSize)); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| VOID | |
| FvbVirtualddressChangeEvent ( | |
| IN EFI_EVENT Event, | |
| IN VOID *Context | |
| ) | |
| /*++ | |
| Routine Description: | |
| Fixup internal data so that EFI and SAL can be call in virtual mode. | |
| Call the passed in Child Notify event and convert the mFvbModuleGlobal | |
| date items to there virtual address. | |
| mFvbModuleGlobal->FvInstance[FVB_PHYSICAL] - Physical copy of instance data | |
| mFvbModuleGlobal->FvInstance[FVB_VIRTUAL] - Virtual pointer to common | |
| instance data. | |
| Arguments: | |
| (Standard EFI notify event - EFI_EVENT_NOTIFY) | |
| Returns: | |
| None | |
| --*/ | |
| { | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| UINTN Index; | |
| gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID **) &mFvbModuleGlobal->FvInstance[FVB_VIRTUAL]); | |
| // | |
| // Convert the base address of all the instances | |
| // | |
| Index = 0; | |
| FwhInstance = mFvbModuleGlobal->FvInstance[FVB_PHYSICAL]; | |
| while (Index < mFvbModuleGlobal->NumFv) { | |
| gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID **) &FwhInstance->FvBase[FVB_VIRTUAL]); | |
| // | |
| // SpiWrite and SpiErase always use Physical Address instead of | |
| // Virtual Address, even in Runtime. So we need not convert pointer | |
| // for FvWriteBase[FVB_VIRTUAL] | |
| // | |
| // EfiConvertPointer (0, (VOID **) &FwhInstance->FvWriteBase[FVB_VIRTUAL]); | |
| // | |
| FwhInstance = (EFI_FW_VOL_INSTANCE *) | |
| ( | |
| (UINTN) ((UINT8 *) FwhInstance) + FwhInstance->VolumeHeader.HeaderLength + | |
| (sizeof (EFI_FW_VOL_INSTANCE) - sizeof (EFI_FIRMWARE_VOLUME_HEADER)) | |
| ); | |
| Index++; | |
| } | |
| gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID **) &mFvbModuleGlobal->FvbScratchSpace[FVB_VIRTUAL]); | |
| // | |
| // Convert SPI_PROTOCOL instance for runtime | |
| // | |
| gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID **) &mFvbModuleGlobal->SpiProtocol); | |
| gRT->ConvertPointer (EFI_INTERNAL_POINTER, (VOID **) &mFvbModuleGlobal); | |
| } | |
| VOID | |
| FvbMemWrite8 ( | |
| IN UINT64 Dest, | |
| IN UINT8 Byte | |
| ) | |
| { | |
| MmioWrite8 ((UINTN)Dest, Byte); | |
| return ; | |
| } | |
| EFI_STATUS | |
| GetFvbInstance ( | |
| IN UINTN Instance, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| OUT EFI_FW_VOL_INSTANCE **FwhInstance, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieves the physical address of a memory mapped FV | |
| Arguments: | |
| Instance - The FV instance whose base address is going to be | |
| returned | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| FwhInstance - The EFI_FW_VOL_INSTANCE fimrware instance structure | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| EFI_INVALID_PARAMETER - Instance not found | |
| --*/ | |
| { | |
| EFI_FW_VOL_INSTANCE *FwhRecord; | |
| if (Instance >= Global->NumFv) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| FwhRecord = Global->FvInstance[Virtual]; | |
| while (Instance > 0) { | |
| FwhRecord = (EFI_FW_VOL_INSTANCE *) | |
| ( | |
| (UINTN) ((UINT8 *) FwhRecord) + FwhRecord->VolumeHeader.HeaderLength + | |
| (sizeof (EFI_FW_VOL_INSTANCE) - sizeof (EFI_FIRMWARE_VOLUME_HEADER)) | |
| ); | |
| Instance--; | |
| } | |
| *FwhInstance = FwhRecord; | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| FvbGetPhysicalAddress ( | |
| IN UINTN Instance, | |
| OUT EFI_PHYSICAL_ADDRESS *Address, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieves the physical address of a memory mapped FV | |
| Arguments: | |
| Instance - The FV instance whose base address is going to be | |
| returned | |
| Address - Pointer to a caller allocated EFI_PHYSICAL_ADDRESS | |
| that on successful return, contains the base address | |
| of the firmware volume. | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| EFI_INVALID_PARAMETER - Instance not found | |
| --*/ | |
| { | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| EFI_STATUS Status; | |
| FwhInstance = NULL; | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| Status = GetFvbInstance (Instance, Global, &FwhInstance, Virtual); | |
| ASSERT_EFI_ERROR (Status); | |
| *Address = FwhInstance->FvBase[Virtual]; | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| FvbGetVolumeAttributes ( | |
| IN UINTN Instance, | |
| OUT EFI_FVB_ATTRIBUTES_2 *Attributes, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieves attributes, insures positive polarity of attribute bits, returns | |
| resulting attributes in output parameter | |
| Arguments: | |
| Instance - The FV instance whose attributes is going to be | |
| returned | |
| Attributes - Output buffer which contains attributes | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| EFI_INVALID_PARAMETER - Instance not found | |
| --*/ | |
| { | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| EFI_STATUS Status; | |
| FwhInstance = NULL; | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| Status = GetFvbInstance (Instance, Global, &FwhInstance, Virtual); | |
| ASSERT_EFI_ERROR (Status); | |
| *Attributes = FwhInstance->VolumeHeader.Attributes; | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| FvbGetLbaAddress ( | |
| IN UINTN Instance, | |
| IN EFI_LBA Lba, | |
| OUT UINTN *LbaAddress, | |
| OUT UINTN *LbaWriteAddress, | |
| OUT UINTN *LbaLength, | |
| OUT UINTN *NumOfBlocks, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieves the starting address of an LBA in an FV | |
| Arguments: | |
| Instance - The FV instance which the Lba belongs to | |
| Lba - The logical block address | |
| LbaAddress - On output, contains the physical starting address | |
| of the Lba | |
| LbaWriteAddress - On output, contains the physical starting address | |
| of the Lba for writing | |
| LbaLength - On output, contains the length of the block | |
| NumOfBlocks - A pointer to a caller allocated UINTN in which the | |
| number of consecutive blocks starting with Lba is | |
| returned. All blocks in this range have a size of | |
| BlockSize | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| EFI_INVALID_PARAMETER - Instance not found | |
| --*/ | |
| { | |
| UINT32 NumBlocks; | |
| UINT32 BlockLength; | |
| UINTN Offset; | |
| EFI_LBA StartLba; | |
| EFI_LBA NextLba; | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| EFI_FV_BLOCK_MAP_ENTRY *BlockMap; | |
| EFI_STATUS Status; | |
| FwhInstance = NULL; | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| Status = GetFvbInstance (Instance, Global, &FwhInstance, Virtual); | |
| ASSERT_EFI_ERROR (Status); | |
| StartLba = 0; | |
| Offset = 0; | |
| BlockMap = &(FwhInstance->VolumeHeader.BlockMap[0]); | |
| // | |
| // Parse the blockmap of the FV to find which map entry the Lba belongs to | |
| // | |
| while (TRUE) { | |
| NumBlocks = BlockMap->NumBlocks; | |
| BlockLength = BlockMap->Length; | |
| if ((NumBlocks == 0) || (BlockLength == 0)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| NextLba = StartLba + NumBlocks; | |
| // | |
| // The map entry found | |
| // | |
| if (Lba >= StartLba && Lba < NextLba) { | |
| Offset = Offset + (UINTN) MultU64x32 ((Lba - StartLba), BlockLength); | |
| if (LbaAddress) { | |
| *LbaAddress = FwhInstance->FvBase[Virtual] + Offset; | |
| } | |
| if (LbaWriteAddress) { | |
| *LbaWriteAddress = FwhInstance->FvWriteBase[Virtual] + Offset; | |
| } | |
| if (LbaLength) { | |
| *LbaLength = BlockLength; | |
| } | |
| if (NumOfBlocks) { | |
| *NumOfBlocks = (UINTN) (NextLba - Lba); | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| StartLba = NextLba; | |
| Offset = Offset + NumBlocks * BlockLength; | |
| BlockMap++; | |
| } | |
| } | |
| EFI_STATUS | |
| FvbReadBlock ( | |
| IN UINTN Instance, | |
| IN EFI_LBA Lba, | |
| IN UINTN BlockOffset, | |
| IN OUT UINTN *NumBytes, | |
| IN UINT8 *Buffer, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Reads specified number of bytes into a buffer from the specified block | |
| Arguments: | |
| Instance - The FV instance to be read from | |
| Lba - The logical block address to be read from | |
| BlockOffset - Offset into the block at which to begin reading | |
| NumBytes - Pointer that on input contains the total size of | |
| the buffer. On output, it contains the total number | |
| of bytes read | |
| Buffer - Pointer to a caller allocated buffer that will be | |
| used to hold the data read | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - The firmware volume was read successfully and | |
| contents are in Buffer | |
| EFI_BAD_BUFFER_SIZE - Read attempted across a LBA boundary. On output, | |
| NumBytes contains the total number of bytes returned | |
| in Buffer | |
| EFI_ACCESS_DENIED - The firmware volume is in the ReadDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be read | |
| EFI_INVALID_PARAMETER - Instance not found, or NumBytes, Buffer are NULL | |
| --*/ | |
| { | |
| EFI_FVB_ATTRIBUTES_2 Attributes; | |
| UINTN LbaAddress; | |
| UINTN LbaLength; | |
| EFI_STATUS Status; | |
| // | |
| // Check for invalid conditions | |
| // | |
| if ((NumBytes == NULL) || (Buffer == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if (*NumBytes == 0) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| Status = FvbGetLbaAddress (Instance, Lba, &LbaAddress, NULL, &LbaLength, NULL, Global, Virtual); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Check if the FV is read enabled | |
| // | |
| FvbGetVolumeAttributes (Instance, &Attributes, Global, Virtual); | |
| if ((Attributes & EFI_FVB2_READ_STATUS) == 0) { | |
| return EFI_ACCESS_DENIED; | |
| } | |
| // | |
| // Perform boundary checks and adjust NumBytes | |
| // | |
| if (BlockOffset > LbaLength) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if (LbaLength < (*NumBytes + BlockOffset)) { | |
| *NumBytes = (UINT32) (LbaLength - BlockOffset); | |
| Status = EFI_BAD_BUFFER_SIZE; | |
| } | |
| MmioReadBuffer8 (LbaAddress + BlockOffset, (UINTN) *NumBytes, Buffer); | |
| return Status; | |
| } | |
| EFI_STATUS | |
| FlashFdWrite ( | |
| IN UINTN WriteAddress, | |
| IN UINTN Address, | |
| IN OUT UINTN *NumBytes, | |
| IN UINT8 *Buffer, | |
| IN UINTN LbaLength | |
| ) | |
| /*++ | |
| Routine Description: | |
| Writes specified number of bytes from the input buffer to the address | |
| Arguments: | |
| Returns: | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| Status = EFI_SUCCESS; | |
| // | |
| // TODO: Suggested that this code be "critical section" | |
| // | |
| WriteAddress -= ( PcdGet32 (PcdFlashAreaBaseAddress) ); | |
| if (mInSmmMode == 0) { // !(EfiInManagementInterrupt ())) { | |
| Status = mFvbModuleGlobal->SpiProtocol->Execute ( | |
| mFvbModuleGlobal->SpiProtocol, | |
| SPI_OPCODE_WRITE_INDEX, // OpcodeIndex | |
| 0, // PrefixOpcodeIndex | |
| TRUE, // DataCycle | |
| TRUE, // Atomic | |
| TRUE, // ShiftOut | |
| WriteAddress, // Address | |
| (UINT32) (*NumBytes), // Data Number | |
| Buffer, | |
| EnumSpiRegionBios | |
| ); | |
| } else { | |
| Status = mFvbModuleGlobal->SmmSpiProtocol->Execute ( | |
| mFvbModuleGlobal->SmmSpiProtocol, | |
| SPI_OPCODE_WRITE_INDEX, // OpcodeIndex | |
| 0, // PrefixOpcodeIndex | |
| TRUE, // DataCycle | |
| TRUE, // Atomic | |
| TRUE, // ShiftOut | |
| WriteAddress, // Address | |
| (UINT32) (*NumBytes), // Data Number | |
| Buffer, | |
| EnumSpiRegionBios | |
| ); | |
| } | |
| AsmWbinvd (); | |
| return Status; | |
| } | |
| EFI_STATUS | |
| FlashFdErase ( | |
| IN UINTN WriteAddress, | |
| IN UINTN Address, | |
| IN UINTN LbaLength | |
| ) | |
| /*++ | |
| Routine Description: | |
| Erase a certain block from address LbaWriteAddress | |
| Arguments: | |
| Returns: | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| WriteAddress -= (PcdGet32 (PcdFlashAreaBaseAddress)); | |
| if (mInSmmMode == 0 ) { // !(EfiInManagementInterrupt ())) { | |
| Status = mFvbModuleGlobal->SpiProtocol->Execute ( | |
| mFvbModuleGlobal->SpiProtocol, | |
| SPI_OPCODE_ERASE_INDEX, // OpcodeIndex | |
| 0, // PrefixOpcodeIndex | |
| FALSE, // DataCycle | |
| TRUE, // Atomic | |
| FALSE, // ShiftOut | |
| WriteAddress, // Address | |
| 0, // Data Number | |
| NULL, | |
| EnumSpiRegionBios // SPI_REGION_TYPE | |
| ); | |
| } else { | |
| Status = mFvbModuleGlobal->SmmSpiProtocol->Execute ( | |
| mFvbModuleGlobal->SmmSpiProtocol, | |
| SPI_OPCODE_ERASE_INDEX, // OpcodeIndex | |
| 0, // PrefixOpcodeIndex | |
| FALSE, // DataCycle | |
| TRUE, // Atomic | |
| FALSE, // ShiftOut | |
| WriteAddress, // Address | |
| 0, // Data Number | |
| NULL, | |
| EnumSpiRegionBios // SPI_REGION_TYPE | |
| ); | |
| } | |
| AsmWbinvd (); | |
| return Status; | |
| } | |
| EFI_STATUS | |
| FvbWriteBlock ( | |
| IN UINTN Instance, | |
| IN EFI_LBA Lba, | |
| IN UINTN BlockOffset, | |
| IN OUT UINTN *NumBytes, | |
| IN UINT8 *Buffer, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Writes specified number of bytes from the input buffer to the block | |
| Arguments: | |
| Instance - The FV instance to be written to | |
| Lba - The starting logical block index to write to | |
| BlockOffset - Offset into the block at which to begin writing | |
| NumBytes - Pointer that on input contains the total size of | |
| the buffer. On output, it contains the total number | |
| of bytes actually written | |
| Buffer - Pointer to a caller allocated buffer that contains | |
| the source for the write | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - The firmware volume was written successfully | |
| EFI_BAD_BUFFER_SIZE - Write attempted across a LBA boundary. On output, | |
| NumBytes contains the total number of bytes | |
| actually written | |
| EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be written | |
| EFI_INVALID_PARAMETER - Instance not found, or NumBytes, Buffer are NULL | |
| --*/ | |
| { | |
| EFI_FVB_ATTRIBUTES_2 Attributes; | |
| UINTN LbaAddress; | |
| UINTN LbaWriteAddress; | |
| UINTN LbaLength; | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| EFI_STATUS Status; | |
| EFI_STATUS ReturnStatus; | |
| FwhInstance = NULL; | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| Status = GetFvbInstance (Instance, Global, &FwhInstance, Virtual); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // Writes are enabled in the init routine itself | |
| // | |
| if (!FwhInstance->WriteEnabled) { | |
| return EFI_ACCESS_DENIED; | |
| } | |
| // | |
| // Check for invalid conditions | |
| // | |
| if ((NumBytes == NULL) || (Buffer == NULL)) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if (*NumBytes == 0) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| Status = FvbGetLbaAddress (Instance, Lba, &LbaAddress, &LbaWriteAddress, &LbaLength, NULL, Global, Virtual); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| // | |
| // Check if the FV is write enabled | |
| // | |
| FvbGetVolumeAttributes (Instance, &Attributes, Global, Virtual); | |
| if ((Attributes & EFI_FVB2_WRITE_STATUS) == 0) { | |
| return EFI_ACCESS_DENIED; | |
| } | |
| // | |
| // Perform boundary checks and adjust NumBytes | |
| // | |
| if (BlockOffset > LbaLength) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if (LbaLength < (*NumBytes + BlockOffset)) { | |
| *NumBytes = (UINT32) (LbaLength - BlockOffset); | |
| Status = EFI_BAD_BUFFER_SIZE; | |
| } | |
| ReturnStatus = FlashFdWrite ( | |
| LbaWriteAddress + BlockOffset, | |
| LbaAddress, | |
| NumBytes, | |
| Buffer, | |
| LbaLength | |
| ); | |
| if (EFI_ERROR (ReturnStatus)) { | |
| return ReturnStatus; | |
| } | |
| return Status; | |
| } | |
| EFI_STATUS | |
| FvbEraseBlock ( | |
| IN UINTN Instance, | |
| IN EFI_LBA Lba, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Erases and initializes a firmware volume block | |
| Arguments: | |
| Instance - The FV instance to be erased | |
| Lba - The logical block index to be erased | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - The erase request was successfully completed | |
| EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be written. Firmware device may have been | |
| partially erased | |
| EFI_INVALID_PARAMETER - Instance not found | |
| --*/ | |
| { | |
| EFI_FVB_ATTRIBUTES_2 Attributes; | |
| UINTN LbaAddress; | |
| UINTN LbaWriteAddress; | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| UINTN LbaLength; | |
| EFI_STATUS Status; | |
| UINTN SectorNum; | |
| UINTN Index; | |
| FwhInstance = NULL; | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| Status = GetFvbInstance (Instance, Global, &FwhInstance, Virtual); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // Writes are enabled in the init routine itself | |
| // | |
| if (!FwhInstance->WriteEnabled) { | |
| return EFI_ACCESS_DENIED; | |
| } | |
| // | |
| // Check if the FV is write enabled | |
| // | |
| FvbGetVolumeAttributes (Instance, &Attributes, Global, Virtual); | |
| if ((Attributes & EFI_FVB2_WRITE_STATUS) == 0) { | |
| return EFI_ACCESS_DENIED; | |
| } | |
| // | |
| // Get the starting address of the block for erase. For debug reasons, | |
| // LbaWriteAddress may not be the same as LbaAddress. | |
| // | |
| Status = FvbGetLbaAddress (Instance, Lba, &LbaAddress, &LbaWriteAddress, &LbaLength, NULL, Global, Virtual); | |
| if (EFI_ERROR (Status)) { | |
| return Status; | |
| } | |
| SectorNum = LbaLength / SPI_ERASE_SECTOR_SIZE; | |
| for (Index = 0; Index < SectorNum; Index++){ | |
| Status = FlashFdErase ( | |
| LbaWriteAddress + Index * SPI_ERASE_SECTOR_SIZE, | |
| LbaAddress, | |
| SPI_ERASE_SECTOR_SIZE | |
| ); | |
| if (Status != EFI_SUCCESS){ | |
| break; | |
| } | |
| } | |
| return Status; | |
| } | |
| EFI_STATUS | |
| FvbEraseCustomBlockRange ( | |
| IN UINTN Instance, | |
| IN EFI_LBA StartLba, | |
| IN UINTN OffsetStartLba, | |
| IN EFI_LBA LastLba, | |
| IN UINTN OffsetLastLba, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Erases and initializes a specified range of a firmware volume | |
| Arguments: | |
| Instance - The FV instance to be erased | |
| StartLba - The starting logical block index to be erased | |
| OffsetStartLba - Offset into the starting block at which to | |
| begin erasing | |
| LastLba - The last logical block index to be erased | |
| OffsetStartLba - Offset into the last block at which to end erasing | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - The firmware volume was erased successfully | |
| EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be written. Firmware device may have been | |
| partially erased | |
| EFI_INVALID_PARAMETER - Instance not found | |
| --*/ | |
| { | |
| EFI_LBA Index; | |
| UINTN LbaSize; | |
| UINTN ScratchLbaSizeData; | |
| // | |
| // First LBA. | |
| // | |
| FvbGetLbaAddress (Instance, StartLba, NULL, NULL, &LbaSize, NULL, Global, Virtual); | |
| // | |
| // Use the scratch space as the intermediate buffer to transfer data | |
| // Back up the first LBA in scratch space. | |
| // | |
| FvbReadBlock (Instance, StartLba, 0, &LbaSize, Global->FvbScratchSpace[Virtual], Global, Virtual); | |
| // | |
| // erase now | |
| // | |
| FvbEraseBlock (Instance, StartLba, Global, Virtual); | |
| ScratchLbaSizeData = OffsetStartLba; | |
| // | |
| // write the data back to the first block | |
| // | |
| if (ScratchLbaSizeData > 0) { | |
| FvbWriteBlock (Instance, StartLba, 0, &ScratchLbaSizeData, Global->FvbScratchSpace[Virtual], Global, Virtual); | |
| } | |
| // | |
| // Middle LBAs | |
| // | |
| if (LastLba > (StartLba + 1)) { | |
| for (Index = (StartLba + 1); Index <= (LastLba - 1); Index++) { | |
| FvbEraseBlock (Instance, Index, Global, Virtual); | |
| } | |
| } | |
| // | |
| // Last LBAs, the same as first LBAs | |
| // | |
| if (LastLba > StartLba) { | |
| FvbGetLbaAddress (Instance, LastLba, NULL, NULL, &LbaSize, NULL, Global, Virtual); | |
| FvbReadBlock (Instance, LastLba, 0, &LbaSize, Global->FvbScratchSpace[Virtual], Global, Virtual); | |
| FvbEraseBlock (Instance, LastLba, Global, Virtual); | |
| } | |
| ScratchLbaSizeData = LbaSize - (OffsetStartLba + 1); | |
| return FvbWriteBlock ( | |
| Instance, | |
| LastLba, | |
| (OffsetLastLba + 1), | |
| &ScratchLbaSizeData, | |
| Global->FvbScratchSpace[Virtual], | |
| Global, | |
| Virtual | |
| ); | |
| } | |
| EFI_STATUS | |
| FvbSetVolumeAttributes ( | |
| IN UINTN Instance, | |
| IN OUT EFI_FVB_ATTRIBUTES_2 *Attributes, | |
| IN ESAL_FWB_GLOBAL *Global, | |
| IN BOOLEAN Virtual | |
| ) | |
| /*++ | |
| Routine Description: | |
| Modifies the current settings of the firmware volume according to the | |
| input parameter, and returns the new setting of the volume | |
| Arguments: | |
| Instance - The FV instance whose attributes is going to be | |
| modified | |
| Attributes - On input, it is a pointer to EFI_FVB_ATTRIBUTES_2 | |
| containing the desired firmware volume settings. | |
| On successful return, it contains the new settings | |
| of the firmware volume | |
| Global - Pointer to ESAL_FWB_GLOBAL that contains all | |
| instance data | |
| Virtual - Whether CPU is in virtual or physical mode | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| EFI_ACCESS_DENIED - The volume setting is locked and cannot be modified | |
| EFI_INVALID_PARAMETER - Instance not found, or The attributes requested are | |
| in conflict with the capabilities as declared in the | |
| firmware volume header | |
| --*/ | |
| { | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| EFI_FVB_ATTRIBUTES_2 OldAttributes; | |
| EFI_FVB_ATTRIBUTES_2 *AttribPtr; | |
| UINT32 Capabilities; | |
| UINT32 OldStatus; | |
| UINT32 NewStatus; | |
| EFI_STATUS Status; | |
| FwhInstance = NULL; | |
| // | |
| // Find the right instance of the FVB private data | |
| // | |
| Status = GetFvbInstance (Instance, Global, &FwhInstance, Virtual); | |
| ASSERT_EFI_ERROR (Status); | |
| AttribPtr = (EFI_FVB_ATTRIBUTES_2 *) &(FwhInstance->VolumeHeader.Attributes); | |
| OldAttributes = *AttribPtr; | |
| Capabilities = OldAttributes & EFI_FVB2_CAPABILITIES; | |
| OldStatus = OldAttributes & EFI_FVB2_STATUS; | |
| NewStatus = *Attributes & EFI_FVB2_STATUS; | |
| // | |
| // If firmware volume is locked, no status bit can be updated | |
| // | |
| if (OldAttributes & EFI_FVB2_LOCK_STATUS) { | |
| if (OldStatus ^ NewStatus) { | |
| return EFI_ACCESS_DENIED; | |
| } | |
| } | |
| // | |
| // Test read disable | |
| // | |
| if ((Capabilities & EFI_FVB2_READ_DISABLED_CAP) == 0) { | |
| if ((NewStatus & EFI_FVB2_READ_STATUS) == 0) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } | |
| // | |
| // Test read enable | |
| // | |
| if ((Capabilities & EFI_FVB2_READ_ENABLED_CAP) == 0) { | |
| if (NewStatus & EFI_FVB2_READ_STATUS) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } | |
| // | |
| // Test write disable | |
| // | |
| if ((Capabilities & EFI_FVB2_WRITE_DISABLED_CAP) == 0) { | |
| if ((NewStatus & EFI_FVB2_WRITE_STATUS) == 0) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } | |
| // | |
| // Test write enable | |
| // | |
| if ((Capabilities & EFI_FVB2_WRITE_ENABLED_CAP) == 0) { | |
| if (NewStatus & EFI_FVB2_WRITE_STATUS) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } | |
| // | |
| // Test lock | |
| // | |
| if ((Capabilities & EFI_FVB2_LOCK_CAP) == 0) { | |
| if (NewStatus & EFI_FVB2_LOCK_STATUS) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } | |
| *AttribPtr = (*AttribPtr) & (0xFFFFFFFF & (~EFI_FVB2_STATUS)); | |
| *AttribPtr = (*AttribPtr) | NewStatus; | |
| *Attributes = *AttribPtr; | |
| return EFI_SUCCESS; | |
| } | |
| // | |
| // FVB protocol APIs | |
| // | |
| EFI_STATUS | |
| EFIAPI | |
| FvbProtocolGetPhysicalAddress ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| OUT EFI_PHYSICAL_ADDRESS *Address | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieves the physical address of the device. | |
| Arguments: | |
| This - Calling context | |
| Address - Output buffer containing the address. | |
| Returns: | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| return FvbGetPhysicalAddress (FvbDevice->Instance, Address, mFvbModuleGlobal, EfiGoneVirtual ()); | |
| } | |
| EFI_STATUS | |
| FvbProtocolGetBlockSize ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| IN EFI_LBA Lba, | |
| OUT UINTN *BlockSize, | |
| OUT UINTN *NumOfBlocks | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieve the size of a logical block | |
| Arguments: | |
| This - Calling context | |
| Lba - Indicates which block to return the size for. | |
| BlockSize - A pointer to a caller allocated UINTN in which | |
| the size of the block is returned | |
| NumOfBlocks - a pointer to a caller allocated UINTN in which the | |
| number of consecutive blocks starting with Lba is | |
| returned. All blocks in this range have a size of | |
| BlockSize | |
| Returns: | |
| EFI_SUCCESS - The firmware volume was read successfully and | |
| contents are in Buffer | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| return FvbGetLbaAddress ( | |
| FvbDevice->Instance, | |
| Lba, | |
| NULL, | |
| NULL, | |
| BlockSize, | |
| NumOfBlocks, | |
| mFvbModuleGlobal, | |
| EfiGoneVirtual () | |
| ); | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| FvbProtocolGetAttributes ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| OUT EFI_FVB_ATTRIBUTES_2 *Attributes | |
| ) | |
| /*++ | |
| Routine Description: | |
| Retrieves Volume attributes. No polarity translations are done. | |
| Arguments: | |
| This - Calling context | |
| Attributes - output buffer which contains attributes | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| return FvbGetVolumeAttributes (FvbDevice->Instance, Attributes, mFvbModuleGlobal, EfiGoneVirtual ()); | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| FvbProtocolSetAttributes ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| IN OUT EFI_FVB_ATTRIBUTES_2 *Attributes | |
| ) | |
| /*++ | |
| Routine Description: | |
| Sets Volume attributes. No polarity translations are done. | |
| Arguments: | |
| This - Calling context | |
| Attributes - output buffer which contains attributes | |
| Returns: | |
| EFI_SUCCESS - Successfully returns | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| return FvbSetVolumeAttributes (FvbDevice->Instance, Attributes, mFvbModuleGlobal, EfiGoneVirtual ()); | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| FvbProtocolEraseBlocks ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| ... | |
| ) | |
| /*++ | |
| Routine Description: | |
| The EraseBlock() function erases one or more blocks as denoted by the | |
| variable argument list. The entire parameter list of blocks must be verified | |
| prior to erasing any blocks. If a block is requested that does not exist | |
| within the associated firmware volume (it has a larger index than the last | |
| block of the firmware volume), the EraseBlock() function must return | |
| EFI_INVALID_PARAMETER without modifying the contents of the firmware volume. | |
| Arguments: | |
| This - Calling context | |
| ... - Starting LBA followed by Number of Lba to erase. | |
| a -1 to terminate the list. | |
| Returns: | |
| EFI_SUCCESS - The erase request was successfully completed | |
| EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be written. Firmware device may have been | |
| partially erased | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| UINTN NumOfBlocks; | |
| VA_LIST args; | |
| EFI_LBA StartingLba; | |
| UINTN NumOfLba; | |
| EFI_STATUS Status; | |
| FwhInstance = NULL; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| Status = GetFvbInstance (FvbDevice->Instance, mFvbModuleGlobal, &FwhInstance, EfiGoneVirtual ()); | |
| ASSERT_EFI_ERROR (Status); | |
| NumOfBlocks = FwhInstance->NumOfBlocks; | |
| VA_START (args, This); | |
| do { | |
| StartingLba = VA_ARG (args, EFI_LBA); | |
| if (StartingLba == EFI_LBA_LIST_TERMINATOR) { | |
| break; | |
| } | |
| NumOfLba = VA_ARG (args, UINT32); | |
| // | |
| // Check input parameters | |
| // | |
| if (NumOfLba == 0) { | |
| VA_END (args); | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| if ((StartingLba + NumOfLba) > NumOfBlocks) { | |
| return EFI_INVALID_PARAMETER; | |
| } | |
| } while (TRUE); | |
| VA_END (args); | |
| VA_START (args, This); | |
| do { | |
| StartingLba = VA_ARG (args, EFI_LBA); | |
| if (StartingLba == EFI_LBA_LIST_TERMINATOR) { | |
| break; | |
| } | |
| NumOfLba = VA_ARG (args, UINT32); | |
| while (NumOfLba > 0) { | |
| Status = FvbEraseBlock (FvbDevice->Instance, StartingLba, mFvbModuleGlobal, EfiGoneVirtual ()); | |
| if (EFI_ERROR (Status)) { | |
| VA_END (args); | |
| return Status; | |
| } | |
| StartingLba++; | |
| NumOfLba--; | |
| } | |
| } while (TRUE); | |
| VA_END (args); | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| FvbProtocolWrite ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| IN EFI_LBA Lba, | |
| IN UINTN Offset, | |
| IN OUT UINTN *NumBytes, | |
| IN UINT8 *Buffer | |
| ) | |
| /*++ | |
| Routine Description: | |
| Writes data beginning at Lba:Offset from FV. The write terminates either | |
| when *NumBytes of data have been written, or when a block boundary is | |
| reached. *NumBytes is updated to reflect the actual number of bytes | |
| written. The write opertion does not include erase. This routine will | |
| attempt to write only the specified bytes. If the writes do not stick, | |
| it will return an error. | |
| Arguments: | |
| This - Calling context | |
| Lba - Block in which to begin write | |
| Offset - Offset in the block at which to begin write | |
| NumBytes - On input, indicates the requested write size. On | |
| output, indicates the actual number of bytes written | |
| Buffer - Buffer containing source data for the write. | |
| Returns: | |
| EFI_SUCCESS - The firmware volume was written successfully | |
| EFI_BAD_BUFFER_SIZE - Write attempted across a LBA boundary. On output, | |
| NumBytes contains the total number of bytes | |
| actually written | |
| EFI_ACCESS_DENIED - The firmware volume is in the WriteDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be written | |
| EFI_INVALID_PARAMETER - NumBytes or Buffer are NULL | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| return FvbWriteBlock (FvbDevice->Instance, Lba, Offset, NumBytes, Buffer, mFvbModuleGlobal, EfiGoneVirtual ()); | |
| } | |
| EFI_STATUS | |
| EFIAPI | |
| FvbProtocolRead ( | |
| IN CONST EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *This, | |
| IN EFI_LBA Lba, | |
| IN UINTN Offset, | |
| IN OUT UINTN *NumBytes, | |
| IN UINT8 *Buffer | |
| ) | |
| /*++ | |
| Routine Description: | |
| Reads data beginning at Lba:Offset from FV. The Read terminates either | |
| when *NumBytes of data have been read, or when a block boundary is | |
| reached. *NumBytes is updated to reflect the actual number of bytes | |
| written. The write opertion does not include erase. This routine will | |
| attempt to write only the specified bytes. If the writes do not stick, | |
| it will return an error. | |
| Arguments: | |
| This - Calling context | |
| Lba - Block in which to begin Read | |
| Offset - Offset in the block at which to begin Read | |
| NumBytes - On input, indicates the requested write size. On | |
| output, indicates the actual number of bytes Read | |
| Buffer - Buffer containing source data for the Read. | |
| Returns: | |
| EFI_SUCCESS - The firmware volume was read successfully and | |
| contents are in Buffer | |
| EFI_BAD_BUFFER_SIZE - Read attempted across a LBA boundary. On output, | |
| NumBytes contains the total number of bytes returned | |
| in Buffer | |
| EFI_ACCESS_DENIED - The firmware volume is in the ReadDisabled state | |
| EFI_DEVICE_ERROR - The block device is not functioning correctly and | |
| could not be read | |
| EFI_INVALID_PARAMETER - NumBytes or Buffer are NULL | |
| --*/ | |
| { | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| EFI_STATUS Status; | |
| FvbDevice = FVB_DEVICE_FROM_THIS (This); | |
| Status = FvbReadBlock (FvbDevice->Instance, Lba, Offset, NumBytes, Buffer, mFvbModuleGlobal, EfiGoneVirtual ()); | |
| return Status; | |
| } | |
| EFI_STATUS | |
| ValidateFvHeader ( | |
| EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader | |
| ) | |
| /*++ | |
| Routine Description: | |
| Check the integrity of firmware volume header | |
| Arguments: | |
| FwVolHeader - A pointer to a firmware volume header | |
| Returns: | |
| EFI_SUCCESS - The firmware volume is consistent | |
| EFI_NOT_FOUND - The firmware volume has corrupted. So it is not an FV | |
| --*/ | |
| { | |
| UINT16 *Ptr; | |
| UINT16 HeaderLength; | |
| UINT16 Checksum; | |
| // | |
| // Verify the header revision, header signature, length | |
| // Length of FvBlock cannot be 2**64-1 | |
| // HeaderLength cannot be an odd number | |
| // | |
| #ifndef R864_BUILD | |
| if (((FwVolHeader->Revision != EFI_FVH_REVISION) && (FwVolHeader->Revision != EFI_FVH_REVISION)) || | |
| #else | |
| if ((FwVolHeader->Revision != EFI_FVH_REVISION) || | |
| #endif | |
| (FwVolHeader->Signature != EFI_FVH_SIGNATURE) || | |
| (FwVolHeader->FvLength == ((UINTN) -1)) || | |
| ((FwVolHeader->HeaderLength & 0x01) != 0) | |
| ) { | |
| return EFI_NOT_FOUND; | |
| } | |
| // | |
| // Verify the header checksum | |
| // | |
| HeaderLength = (UINT16) (FwVolHeader->HeaderLength / 2); | |
| Ptr = (UINT16 *) FwVolHeader; | |
| Checksum = 0; | |
| while (HeaderLength > 0) { | |
| Checksum = Checksum + (*Ptr); | |
| Ptr++; | |
| HeaderLength--; | |
| } | |
| if (Checksum != 0) { | |
| return EFI_NOT_FOUND; | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| GetFvbHeader ( | |
| VOID **HobList, | |
| OUT EFI_FIRMWARE_VOLUME_HEADER **FwVolHeader, | |
| OUT EFI_PHYSICAL_ADDRESS *BaseAddress, | |
| OUT BOOLEAN *WriteBack | |
| ) | |
| { | |
| EFI_STATUS Status; | |
| Status = EFI_SUCCESS; | |
| *WriteBack = FALSE; | |
| if (*FwVolHeader == NULL) { | |
| *BaseAddress = PcdGet32 (PcdFlashFvRecoveryBase); | |
| } else if (*FwVolHeader == (VOID *)(UINTN)PcdGet32 (PcdFlashFvRecoveryBase)) { | |
| *BaseAddress = PcdGet32 (PcdFlashFvMainBase); | |
| } else if (*FwVolHeader == (VOID *)(UINTN)PcdGet32 (PcdFlashFvMainBase)) { | |
| *BaseAddress = PcdGet32 (PcdFlashNvStorageVariableBase); | |
| } else { | |
| return EFI_NOT_FOUND; | |
| } | |
| DEBUG((EFI_D_INFO, "Fvb base : %08x\n",*BaseAddress)); | |
| *FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) (UINTN) (*BaseAddress); | |
| Status = ValidateFvHeader (*FwVolHeader); | |
| if (EFI_ERROR (Status)) { | |
| // | |
| // Get FvbInfo | |
| // | |
| *WriteBack = TRUE; | |
| Status = GetFvbInfo (*BaseAddress, FwVolHeader); | |
| DEBUG(( DEBUG_ERROR, "Through GetFvbInfo: %08x!\n",*BaseAddress)); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| return EFI_SUCCESS; | |
| } | |
| EFI_STATUS | |
| SmmSpiInit ( | |
| VOID | |
| ) | |
| { | |
| UINT8 SpiStatus; | |
| UINT8 FlashIndex; | |
| UINT8 FlashID[3]; | |
| EFI_STATUS Status; | |
| // | |
| // Obtain a handle for ICH SPI Protocol | |
| // | |
| ASSERT(mSmst != NULL); | |
| if (mFvbModuleGlobal->SmmSpiProtocol == NULL){ | |
| Status = mSmst->SmmLocateProtocol (&gEfiSmmSpiProtocolGuid, NULL, (VOID **) &mFvbModuleGlobal->SmmSpiProtocol); | |
| ASSERT_EFI_ERROR(Status); | |
| } | |
| // | |
| // attempt to identify flash part and initialize spi table | |
| // | |
| for (FlashIndex = 0; FlashIndex < EnumSpiFlashMax; FlashIndex++) { | |
| Status = mFvbModuleGlobal->SmmSpiProtocol->Init ( | |
| mFvbModuleGlobal->SmmSpiProtocol, | |
| &(mSpiInitTable[FlashIndex]) | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| // | |
| // read vendor/device IDs to check if flash device is supported | |
| // | |
| Status = mFvbModuleGlobal->SmmSpiProtocol->Execute ( | |
| mFvbModuleGlobal->SmmSpiProtocol, | |
| SPI_OPCODE_JEDEC_ID_INDEX, | |
| SPI_WREN_INDEX, | |
| TRUE, | |
| FALSE, | |
| FALSE, | |
| 0, | |
| 3, | |
| FlashID, | |
| EnumSpiRegionAll | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| if (((FlashID[0] == mSpiInitTable[FlashIndex].VendorId) && | |
| (FlashID[2] == mSpiInitTable[FlashIndex].DeviceId1)) || | |
| ((FlashID[0] == SPI_AT26DF321_ID1) && | |
| (FlashID[0] == mSpiInitTable[FlashIndex].VendorId) && | |
| (FlashID[1] == mSpiInitTable[FlashIndex].DeviceId0))) { | |
| // | |
| // Supported SPI device found | |
| // | |
| DEBUG ( | |
| ((EFI_D_INFO), | |
| "Smm Mode: Supported SPI Flash device found, Vendor Id: 0x%02x, Device ID: 0x%02x%02x!\n", | |
| FlashID[0], | |
| FlashID[1], | |
| FlashID[2]) | |
| ); | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| if (FlashIndex >= EnumSpiFlashMax) { | |
| Status = EFI_UNSUPPORTED; | |
| DEBUG ( | |
| (EFI_D_ERROR, | |
| "ERROR - Unknown SPI Flash Device, Vendor Id: 0x%02x, Device ID: 0x%02x%02x!\n", | |
| FlashID[0], | |
| FlashID[1], | |
| FlashID[2]) | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| SpiStatus = 0; | |
| Status = mFvbModuleGlobal->SmmSpiProtocol->Execute ( | |
| mFvbModuleGlobal->SmmSpiProtocol, | |
| SPI_OPCODE_WRITE_S_INDEX, // OpcodeIndex | |
| 1, // PrefixOpcodeIndex | |
| TRUE, // DataCycle | |
| TRUE, // Atomic | |
| TRUE, // ShiftOut | |
| 0, // Address | |
| 1, // Data Number | |
| &SpiStatus, | |
| EnumSpiRegionAll // SPI_REGION_TYPE | |
| ); | |
| return Status; | |
| } | |
| EFI_STATUS | |
| SmmSpiNotificationFunction ( | |
| IN CONST EFI_GUID *Protocol, | |
| IN VOID *Interface, | |
| IN EFI_HANDLE Handle | |
| ) | |
| { | |
| return SmmSpiInit(); | |
| } | |
| VOID | |
| EFIAPI | |
| GetFullDriverPath ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable, | |
| OUT EFI_DEVICE_PATH_PROTOCOL **CompleteFilePath | |
| ) | |
| /*++ | |
| Routine Description: | |
| Function is used to get the full device path for this driver. | |
| Arguments: | |
| ImageHandle - The loaded image handle of this driver. | |
| SystemTable - The pointer of system table. | |
| CompleteFilePath - The pointer of returned full file path | |
| Returns: | |
| none | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| EFI_LOADED_IMAGE_PROTOCOL *LoadedImage; | |
| EFI_DEVICE_PATH_PROTOCOL *ImageDevicePath; | |
| Status = gBS->HandleProtocol ( | |
| ImageHandle, | |
| &gEfiLoadedImageProtocolGuid, | |
| (VOID **) &LoadedImage | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| Status = gBS->HandleProtocol ( | |
| LoadedImage->DeviceHandle, | |
| &gEfiDevicePathProtocolGuid, | |
| (VOID *) &ImageDevicePath | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| *CompleteFilePath = AppendDevicePath ( | |
| ImageDevicePath, | |
| LoadedImage->FilePath | |
| ); | |
| return ; | |
| } | |
| EFI_STATUS | |
| FvbInitialize ( | |
| IN EFI_HANDLE ImageHandle, | |
| IN EFI_SYSTEM_TABLE *SystemTable | |
| ) | |
| /*++ | |
| Routine Description: | |
| This function does common initialization for FVB services | |
| Arguments: | |
| Returns: | |
| --*/ | |
| { | |
| EFI_STATUS Status; | |
| EFI_FW_VOL_INSTANCE *FwhInstance; | |
| EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader; | |
| EFI_FIRMWARE_VOLUME_HEADER *TempFwVolHeader; | |
| VOID *HobList; | |
| VOID *FirmwareVolumeHobList; | |
| UINT32 BufferSize; | |
| EFI_FV_BLOCK_MAP_ENTRY *PtrBlockMapEntry; | |
| BOOLEAN WriteEnabled; | |
| BOOLEAN WriteLocked; | |
| EFI_HANDLE FwbHandle; | |
| EFI_FW_VOL_BLOCK_DEVICE *FvbDevice; | |
| EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *OldFwbInterface; | |
| EFI_DEVICE_PATH_PROTOCOL *FwbDevicePath; | |
| EFI_DEVICE_PATH_PROTOCOL *TempFwbDevicePath; | |
| UINT32 MaxLbaSize; | |
| EFI_PHYSICAL_ADDRESS BaseAddress; | |
| BOOLEAN WriteBack; | |
| UINTN NumOfBlocks; | |
| UINTN HeaderLength; | |
| UINT8 SpiStatus; | |
| UINT8 FlashIndex; | |
| UINT8 FlashID[3]; | |
| EFI_DEVICE_PATH_PROTOCOL *CompleteFilePath; | |
| UINT8 PrefixOpcodeIndex; | |
| BOOLEAN InSmm; | |
| EFI_SMM_BASE2_PROTOCOL *mSmmBase2; | |
| EFI_HANDLE Handle; | |
| VOID *Registration; | |
| EFI_EVENT Event; | |
| CompleteFilePath = NULL; | |
| GetFullDriverPath (ImageHandle, SystemTable, &CompleteFilePath); | |
| Status = EfiGetSystemConfigurationTable (&gEfiHobListGuid, &HobList); | |
| // | |
| // No FV HOBs found | |
| // | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // Allocate runtime services data for global variable, which contains | |
| // the private data of all firmware volume block instances | |
| // | |
| mFvbModuleGlobal = (ESAL_FWB_GLOBAL *)AllocateRuntimeZeroPool(sizeof (ESAL_FWB_GLOBAL )); | |
| ASSERT(mFvbModuleGlobal); | |
| mSmmBase2 = NULL; | |
| Status = gBS->LocateProtocol ( | |
| &gEfiSmmBase2ProtocolGuid, | |
| NULL, | |
| (VOID **) &mSmmBase2 | |
| ); | |
| if (mSmmBase2 == NULL) { | |
| InSmm = FALSE; | |
| } else { | |
| mSmmBase2->InSmm (mSmmBase2, &InSmm); | |
| mSmmBase2->GetSmstLocation (mSmmBase2, &mSmst); | |
| } | |
| if (!InSmm) { | |
| mInSmmMode = 0; | |
| // | |
| // Obtain a handle for ICH SPI Protocol | |
| // | |
| Status = gBS->LocateProtocol (&gEfiSpiProtocolGuid, NULL, (VOID **) &mFvbModuleGlobal->SpiProtocol); | |
| ASSERT_EFI_ERROR (Status); | |
| // | |
| // attempt to identify flash part and initialize spi table | |
| // | |
| for (FlashIndex = 0; FlashIndex < EnumSpiFlashMax; FlashIndex++) { | |
| Status = mFvbModuleGlobal->SpiProtocol->Init ( | |
| mFvbModuleGlobal->SpiProtocol, | |
| &(mSpiInitTable[FlashIndex]) | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| // | |
| // read vendor/device IDs to check if flash device is supported | |
| // | |
| Status = mFvbModuleGlobal->SpiProtocol->Execute ( | |
| mFvbModuleGlobal->SpiProtocol, | |
| SPI_OPCODE_JEDEC_ID_INDEX, | |
| SPI_WREN_INDEX, | |
| TRUE, | |
| FALSE, | |
| FALSE, | |
| 0, | |
| 3, | |
| FlashID, | |
| EnumSpiRegionAll | |
| ); | |
| if (!EFI_ERROR (Status)) { | |
| if (((FlashID[0] == mSpiInitTable[FlashIndex].VendorId) && | |
| (FlashID[2] == mSpiInitTable[FlashIndex].DeviceId1)) || | |
| ((FlashID[0] == SPI_AT26DF321_ID1) && | |
| (FlashID[0] == mSpiInitTable[FlashIndex].VendorId) && | |
| (FlashID[1] == mSpiInitTable[FlashIndex].DeviceId0))) { | |
| // | |
| // Supported SPI device found | |
| // | |
| DEBUG ( | |
| ((EFI_D_INFO), | |
| "Supported SPI Flash device found, Vendor Id: 0x%02x, Device ID: 0x%02x%02x!\n", | |
| FlashID[0], | |
| FlashID[1], | |
| FlashID[2]) | |
| ); | |
| PublishFlashDeviceInfo (&mSpiInitTable[FlashIndex]); | |
| break; | |
| } | |
| } | |
| } | |
| } | |
| if (FlashIndex >= EnumSpiFlashMax) { | |
| Status = EFI_UNSUPPORTED; | |
| DEBUG ( | |
| (DEBUG_ERROR, | |
| "ERROR - Unknown SPI Flash Device, Vendor Id: 0x%02x, Device ID: 0x%02x%02x!\n", | |
| FlashID[0], | |
| FlashID[1], | |
| FlashID[2]) | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| // | |
| // Unlock all regions by writing to status register | |
| // This could be SPI device specific, need to follow the datasheet | |
| // To write to Write Status Register the Spi PrefixOpcode needs to be: | |
| // 0 for Atmel parts | |
| // 0 for Intel parts | |
| // 0 for Macronix parts | |
| // 0 for Winbond parts | |
| // 1 for SST parts | |
| SpiStatus = 0; | |
| if (FlashID[0] == SPI_SST25VF016B_ID1) { | |
| PrefixOpcodeIndex = 1; | |
| } else { | |
| PrefixOpcodeIndex = 0; | |
| } | |
| Status = mFvbModuleGlobal->SpiProtocol->Execute ( | |
| mFvbModuleGlobal->SpiProtocol, | |
| SPI_OPCODE_WRITE_S_INDEX, // OpcodeIndex | |
| PrefixOpcodeIndex, // PrefixOpcodeIndex | |
| TRUE, // DataCycle | |
| TRUE, // Atomic | |
| TRUE, // ShiftOut | |
| 0, // Address | |
| 1, // Data Number | |
| &SpiStatus, | |
| EnumSpiRegionAll // SPI_REGION_TYPE | |
| ); | |
| } else { | |
| mInSmmMode = 1; | |
| Status = mSmst->SmmLocateProtocol (&gEfiSmmSpiProtocolGuid, NULL, (VOID **) &mFvbModuleGlobal->SmmSpiProtocol); | |
| if (EFI_ERROR(Status)) { | |
| Registration = NULL; | |
| Status = mSmst->SmmRegisterProtocolNotify ( | |
| &gEfiSmmSpiProtocolGuid, | |
| SmmSpiNotificationFunction, | |
| &Registration | |
| ); | |
| } else { | |
| Status = SmmSpiInit(); | |
| } | |
| } | |
| // | |
| // Calculate the total size for all firmware volume block instances | |
| // | |
| BufferSize = 0; | |
| FirmwareVolumeHobList = HobList; | |
| FwVolHeader = NULL; | |
| do { | |
| Status = GetFvbHeader (&FirmwareVolumeHobList, &FwVolHeader, &BaseAddress, &WriteBack); | |
| if (EFI_ERROR (Status)) { | |
| break; | |
| } | |
| if (FwVolHeader) { | |
| BufferSize += (FwVolHeader->HeaderLength + sizeof (EFI_FW_VOL_INSTANCE) - sizeof (EFI_FIRMWARE_VOLUME_HEADER)); | |
| } | |
| } while (TRUE); | |
| // | |
| // Only need to allocate once. There is only one copy of physical memory for | |
| // the private data of each FV instance. But in virtual mode or in physical | |
| // mode, the address of the the physical memory may be different. | |
| // | |
| mFvbModuleGlobal->FvInstance[FVB_PHYSICAL] = (EFI_FW_VOL_INSTANCE *) AllocateRuntimeZeroPool (BufferSize); | |
| ASSERT(mFvbModuleGlobal->FvInstance[FVB_PHYSICAL]); | |
| // | |
| // Make a virtual copy of the FvInstance pointer. | |
| // | |
| FwhInstance = mFvbModuleGlobal->FvInstance[FVB_PHYSICAL]; | |
| mFvbModuleGlobal->FvInstance[FVB_VIRTUAL] = FwhInstance; | |
| mFvbModuleGlobal->NumFv = 0; | |
| FirmwareVolumeHobList = HobList; | |
| TempFwVolHeader = NULL; | |
| MaxLbaSize = 0; | |
| // | |
| // Fill in the private data of each firmware volume block instance | |
| // | |
| // Foreach Fv HOB in the FirmwareVolumeHobList, loop | |
| // | |
| do { | |
| Status = GetFvbHeader (&FirmwareVolumeHobList, &TempFwVolHeader, &BaseAddress, &WriteBack); | |
| if (EFI_ERROR (Status)) { | |
| break; | |
| } | |
| FwVolHeader = TempFwVolHeader; | |
| if (!FwVolHeader) { | |
| continue; | |
| } | |
| CopyMem ((UINTN *) &(FwhInstance->VolumeHeader), (UINTN *) FwVolHeader, FwVolHeader->HeaderLength); | |
| FwVolHeader = &(FwhInstance->VolumeHeader); | |
| FwhInstance->FvBase[FVB_PHYSICAL] = (UINTN) BaseAddress; | |
| FwhInstance->FvBase[FVB_VIRTUAL] = (UINTN) BaseAddress; | |
| // | |
| // FwhInstance->FvWriteBase may not be the same as FwhInstance->FvBase | |
| // | |
| FwhInstance->FvWriteBase[FVB_PHYSICAL] = (UINTN) BaseAddress; | |
| WriteEnabled = TRUE; | |
| // | |
| // Every pointer should have a virtual copy. | |
| // | |
| FwhInstance->FvWriteBase[FVB_VIRTUAL] = FwhInstance->FvWriteBase[FVB_PHYSICAL]; | |
| FwhInstance->WriteEnabled = WriteEnabled; | |
| EfiInitializeLock (&(FwhInstance->FvbDevLock), TPL_HIGH_LEVEL); | |
| NumOfBlocks = 0; | |
| WriteLocked = FALSE; | |
| if (WriteEnabled) { | |
| for (PtrBlockMapEntry = FwVolHeader->BlockMap; PtrBlockMapEntry->NumBlocks != 0; PtrBlockMapEntry++) { | |
| // | |
| // Get the maximum size of a block. The size will be used to allocate | |
| // buffer for Scratch space, the intermediate buffer for FVB extension | |
| // protocol | |
| // | |
| if (MaxLbaSize < PtrBlockMapEntry->Length) { | |
| MaxLbaSize = PtrBlockMapEntry->Length; | |
| } | |
| NumOfBlocks = NumOfBlocks + PtrBlockMapEntry->NumBlocks; | |
| } | |
| // | |
| // Write back a healthy FV header | |
| // | |
| if (WriteBack && (!WriteLocked)) { | |
| Status = FlashFdErase ( | |
| (UINTN) FwhInstance->FvWriteBase[0], | |
| (UINTN) BaseAddress, | |
| FwVolHeader->BlockMap->Length | |
| ); | |
| HeaderLength = (UINTN) FwVolHeader->HeaderLength; | |
| Status = FlashFdWrite ( | |
| (UINTN) FwhInstance->FvWriteBase[0], | |
| (UINTN) BaseAddress, | |
| &HeaderLength, | |
| (UINT8 *) FwVolHeader, | |
| FwVolHeader->BlockMap->Length | |
| ); | |
| } | |
| } | |
| // | |
| // The total number of blocks in the FV. | |
| // | |
| FwhInstance->NumOfBlocks = NumOfBlocks; | |
| // | |
| // If the FV is write locked, set the appropriate attributes | |
| // | |
| if (WriteLocked) { | |
| // | |
| // write disabled | |
| // | |
| FwhInstance->VolumeHeader.Attributes &= ~EFI_FVB2_WRITE_STATUS; | |
| // | |
| // lock enabled | |
| // | |
| FwhInstance->VolumeHeader.Attributes |= EFI_FVB2_LOCK_STATUS; | |
| } | |
| // | |
| // Allocate and initialize FVB Device in a runtime data buffer | |
| // | |
| FvbDevice = AllocateRuntimeCopyPool (sizeof (EFI_FW_VOL_BLOCK_DEVICE), &mFvbDeviceTemplate); | |
| ASSERT (FvbDevice); | |
| FvbDevice->Instance = mFvbModuleGlobal->NumFv; | |
| mFvbModuleGlobal->NumFv++; | |
| // | |
| // FV does not contains extension header, then produce MEMMAP_DEVICE_PATH | |
| // | |
| if (FwVolHeader->ExtHeaderOffset == 0) { | |
| FvbDevice->FvDevicePath.MemMapDevPath.StartingAddress = BaseAddress; | |
| FvbDevice->FvDevicePath.MemMapDevPath.EndingAddress = BaseAddress + (FwVolHeader->FvLength - 1); | |
| FwbDevicePath = (EFI_DEVICE_PATH_PROTOCOL *)&FvbDevice->FvDevicePath; | |
| } else { | |
| CopyGuid ( | |
| &FvbDevice->UefiFvDevicePath.FvDevPath.FvName, | |
| (EFI_GUID *)(UINTN)(BaseAddress + FwVolHeader->ExtHeaderOffset) | |
| ); | |
| FwbDevicePath = (EFI_DEVICE_PATH_PROTOCOL *)&FvbDevice->UefiFvDevicePath; | |
| } | |
| if (!InSmm) { | |
| // | |
| // Find a handle with a matching device path that has supports FW Block protocol | |
| // | |
| TempFwbDevicePath = FwbDevicePath; | |
| Status = gBS->LocateDevicePath (&gEfiFirmwareVolumeBlockProtocolGuid, &TempFwbDevicePath, &FwbHandle); | |
| if (EFI_ERROR (Status)) { | |
| // | |
| // LocateDevicePath fails so install a new interface and device path | |
| // | |
| FwbHandle = NULL; | |
| Status = gBS->InstallMultipleProtocolInterfaces ( | |
| &FwbHandle, | |
| &gEfiFirmwareVolumeBlockProtocolGuid, | |
| &FvbDevice->FwVolBlockInstance, | |
| &gEfiDevicePathProtocolGuid, | |
| FwbDevicePath, | |
| NULL | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| } else if (EfiIsDevicePathEnd (TempFwbDevicePath)) { | |
| // | |
| // Device already exists, so reinstall the FVB protocol | |
| // | |
| Status = gBS->HandleProtocol ( | |
| FwbHandle, | |
| &gEfiFirmwareVolumeBlockProtocolGuid, | |
| (VOID **) &OldFwbInterface | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| Status = gBS->ReinstallProtocolInterface ( | |
| FwbHandle, | |
| &gEfiFirmwareVolumeBlockProtocolGuid, | |
| OldFwbInterface, | |
| &FvbDevice->FwVolBlockInstance | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| } else { | |
| // | |
| // There was a FVB protocol on an End Device Path node | |
| // | |
| ASSERT (FALSE); | |
| } | |
| } else { | |
| FwbHandle = NULL; | |
| Status = mSmst->SmmInstallProtocolInterface ( | |
| &FwbHandle, | |
| &gEfiSmmFirmwareVolumeBlockProtocolGuid, | |
| EFI_NATIVE_INTERFACE, | |
| &FvbDevice->FwVolBlockInstance | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| } | |
| FwhInstance = (EFI_FW_VOL_INSTANCE *) | |
| ( | |
| (UINTN) ((UINT8 *) FwhInstance) + FwVolHeader->HeaderLength + | |
| (sizeof (EFI_FW_VOL_INSTANCE) - sizeof (EFI_FIRMWARE_VOLUME_HEADER)) | |
| ); | |
| } while (TRUE); | |
| // | |
| // Allocate for scratch space, an intermediate buffer for FVB extention | |
| // | |
| mFvbModuleGlobal->FvbScratchSpace[FVB_PHYSICAL] = AllocateRuntimeZeroPool (MaxLbaSize); | |
| ASSERT (mFvbModuleGlobal->FvbScratchSpace[FVB_PHYSICAL]); | |
| mFvbModuleGlobal->FvbScratchSpace[FVB_VIRTUAL] = mFvbModuleGlobal->FvbScratchSpace[FVB_PHYSICAL]; | |
| if (!InSmm) { | |
| Status = gBS->CreateEventEx ( | |
| EVT_NOTIFY_SIGNAL, | |
| TPL_NOTIFY, | |
| FvbVirtualddressChangeEvent, | |
| NULL, | |
| &gEfiEventVirtualAddressChangeGuid, | |
| &Event | |
| ); | |
| ASSERT_EFI_ERROR (Status); | |
| } else { | |
| // | |
| // Inform other platform drivers that SPI device discovered and | |
| // SPI interface ready for use. | |
| // | |
| Handle = NULL; | |
| Status = gBS->InstallProtocolInterface ( | |
| &Handle, | |
| &gEfiSmmSpiReadyProtocolGuid, | |
| EFI_NATIVE_INTERFACE, | |
| NULL | |
| ); | |
| } | |
| return EFI_SUCCESS; | |
| } |