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MdeModulePkg FaultTolerantWriteDxe: Remove assumptions below in FTW driver.

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1. Work space and spare block must be in a FVB with FV header.
Updated to work space and spare block could be in independent FVBs that are without FV header.
2. NV region, work space and spare block must have same BlockSize.
Updated to NV region, work space and spare block could have different BlockSize.
3. Works space size must be <= one block size.
Update to work space size could be <= one block size (not span blocks) or > one block size (block size aligned).

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16201 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Star Zeng
2014-10-10 02:27:14 +00:00
committed by lzeng14
parent d2a867217d
commit 0d3edd9d26
6 changed files with 502 additions and 204 deletions
Download Patch File Download Diff File Expand all files Collapse all files

293
MdeModulePkg/Universal/FaultTolerantWriteDxe/FtwMisc.c
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@@ -48,12 +48,13 @@ IsErasedFlashBuffer (
}
/**
To erase the block with the spare block size.
To erase the block with specified blocks.
@param FtwDevice The private data of FTW driver
@param FvBlock FVB Protocol interface
@param Lba Lba of the firmware block
@param NumberOfBlocks The number of consecutive blocks starting with Lba
@retval EFI_SUCCESS Block LBA is Erased successfully
@retval Others Error occurs
@@ -63,13 +64,14 @@ EFI_STATUS
FtwEraseBlock (
IN EFI_FTW_DEVICE *FtwDevice,
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock,
EFI_LBA Lba
EFI_LBA Lba,
UINTN NumberOfBlocks
)
{
return FvBlock->EraseBlocks (
FvBlock,
Lba,
FtwDevice->NumberOfSpareBlock,
NumberOfBlocks,
EFI_LBA_LIST_TERMINATOR
);
}
@@ -137,7 +139,7 @@ IsWorkingBlock (
/**
Get firmware block by address.
Get firmware volume block by address.
@param Address Address specified the block
@@ -159,8 +161,9 @@ GetFvbByAddress (
UINTN Index;
EFI_PHYSICAL_ADDRESS FvbBaseAddress;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_HANDLE FvbHandle;
UINTN BlockSize;
UINTN NumberOfBlocks;
*FvBlock = NULL;
FvbHandle = NULL;
@@ -188,8 +191,15 @@ GetFvbByAddress (
continue;
}
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);
if ((Address >= FvbBaseAddress) && (Address <= (FvbBaseAddress + (FwVolHeader->FvLength - 1)))) {
//
// Now, one FVB has one type of BlockSize
//
Status = Fvb->GetBlockSize (Fvb, 0, &BlockSize, &NumberOfBlocks);
if (EFI_ERROR (Status)) {
continue;
}
if ((Address >= FvbBaseAddress) && (Address < (FvbBaseAddress + BlockSize * NumberOfBlocks))) {
*FvBlock = Fvb;
FvbHandle = HandleBuffer[Index];
break;
@@ -206,7 +216,6 @@ GetFvbByAddress (
@param FtwDevice The private data of FTW driver
@param FvBlock Fvb protocol instance
@param Lba The block specified
@return A BOOLEAN value indicating in boot block or not.
@@ -214,8 +223,7 @@ GetFvbByAddress (
BOOLEAN
IsBootBlock (
EFI_FTW_DEVICE *FtwDevice,
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock,
EFI_LBA Lba
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock
)
{
EFI_STATUS Status;
@@ -274,8 +282,8 @@ IsBootBlock (
/**
Copy the content of spare block to a boot block. Size is FTW_BLOCK_SIZE.
Spare block is accessed by FTW working FVB protocol interface. LBA is 1.
Target block is accessed by FvbBlock protocol interface. LBA is Lba.
Spare block is accessed by FTW working FVB protocol interface.
Target block is accessed by FvBlock protocol interface.
FTW will do extra work on boot block update.
FTW should depend on a protocol of EFI_ADDRESS_RANGE_SWAP_PROTOCOL,
@@ -284,7 +292,7 @@ IsBootBlock (
1. GetRangeLocation(), if the Range is inside the boot block, FTW know
that boot block will be update. It shall add a FLAG in the working block.
2. When spare block is ready,
3. SetSwapState(EFI_SWAPPED)
3. SetSwapState(SWAPPED)
4. erasing boot block,
5. programming boot block until the boot block is ok.
6. SetSwapState(UNSWAPPED)
@@ -357,7 +365,7 @@ FlushSpareBlockToBootBlock (
BootLba = 0;
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
Count = FtwDevice->SpareBlockSize;
Status = BootFvb->Read (
BootFvb,
BootLba + Index,
@@ -378,7 +386,7 @@ FlushSpareBlockToBootBlock (
//
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
Count = FtwDevice->SpareBlockSize;
Status = FtwDevice->FtwBackupFvb->Read (
FtwDevice->FtwBackupFvb,
FtwDevice->FtwSpareLba + Index,
@@ -416,7 +424,7 @@ FlushSpareBlockToBootBlock (
//
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
Count = FtwDevice->SpareBlockSize;
Status = FtwDevice->FtwBackupFvb->Write (
FtwDevice->FtwBackupFvb,
FtwDevice->FtwSpareLba + Index,
@@ -444,14 +452,16 @@ FlushSpareBlockToBootBlock (
}
/**
Copy the content of spare block to a target block. Size is FTW_BLOCK_SIZE.
Spare block is accessed by FTW backup FVB protocol interface. LBA is 1.
Target block is accessed by FvbBlock protocol interface. LBA is Lba.
Copy the content of spare block to a target block.
Spare block is accessed by FTW backup FVB protocol interface.
Target block is accessed by FvBlock protocol interface.
@param FtwDevice The private data of FTW driver
@param FvBlock FVB Protocol interface to access target block
@param Lba Lba of the target block
@param BlockSize The size of the block
@param NumberOfBlocks The number of consecutive blocks starting with Lba
@retval EFI_SUCCESS Spare block content is copied to target block
@retval EFI_INVALID_PARAMETER Input parameter error
@@ -463,7 +473,9 @@ EFI_STATUS
FlushSpareBlockToTargetBlock (
EFI_FTW_DEVICE *FtwDevice,
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock,
EFI_LBA Lba
EFI_LBA Lba,
UINTN BlockSize,
UINTN NumberOfBlocks
)
{
EFI_STATUS Status;
@@ -489,7 +501,7 @@ FlushSpareBlockToTargetBlock (
//
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
Count = FtwDevice->SpareBlockSize;
Status = FtwDevice->FtwBackupFvb->Read (
FtwDevice->FtwBackupFvb,
FtwDevice->FtwSpareLba + Index,
@@ -507,17 +519,17 @@ FlushSpareBlockToTargetBlock (
//
// Erase the target block
//
Status = FtwEraseBlock (FtwDevice, FvBlock, Lba);
Status = FtwEraseBlock (FtwDevice, FvBlock, Lba, NumberOfBlocks);
if (EFI_ERROR (Status)) {
FreePool (Buffer);
return EFI_ABORTED;
}
//
// Write memory buffer to block, using the FvbBlock protocol interface
// Write memory buffer to block, using the FvBlock protocol interface
//
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
for (Index = 0; Index < NumberOfBlocks; Index += 1) {
Count = BlockSize;
Status = FvBlock->Write (FvBlock, Lba + Index, 0, &Count, Ptr);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "Ftw: FVB Write block - %r\n", Status));
@@ -563,7 +575,6 @@ FlushSpareBlockToWorkingBlock (
UINTN Count;
UINT8 *Ptr;
UINTN Index;
EFI_LBA WorkSpaceLbaOffset;
//
// Allocate a memory buffer
@@ -574,8 +585,6 @@ FlushSpareBlockToWorkingBlock (
return EFI_OUT_OF_RESOURCES;
}
WorkSpaceLbaOffset = FtwDevice->FtwWorkSpaceLba - FtwDevice->FtwWorkBlockLba;
//
// To guarantee that the WorkingBlockValid is set on spare block
//
@@ -585,8 +594,9 @@ FlushSpareBlockToWorkingBlock (
//
FtwUpdateFvState (
FtwDevice->FtwBackupFvb,
FtwDevice->FtwSpareLba + WorkSpaceLbaOffset,
FtwDevice->FtwWorkSpaceBase + sizeof (EFI_GUID) + sizeof (UINT32),
FtwDevice->SpareBlockSize,
FtwDevice->FtwSpareLba + FtwDevice->FtwWorkSpaceLbaInSpare,
FtwDevice->FtwWorkSpaceBaseInSpare + sizeof (EFI_GUID) + sizeof (UINT32),
WORKING_BLOCK_VALID
);
//
@@ -594,7 +604,7 @@ FlushSpareBlockToWorkingBlock (
//
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
Count = FtwDevice->SpareBlockSize;
Status = FtwDevice->FtwBackupFvb->Read (
FtwDevice->FtwBackupFvb,
FtwDevice->FtwSpareLba + Index,
@@ -612,7 +622,7 @@ FlushSpareBlockToWorkingBlock (
//
// Clear the CRC and STATE, copy data from spare to working block.
//
WorkingBlockHeader = (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER *) (Buffer + (UINTN) WorkSpaceLbaOffset * FtwDevice->BlockSize + FtwDevice->FtwWorkSpaceBase);
WorkingBlockHeader = (EFI_FAULT_TOLERANT_WORKING_BLOCK_HEADER *) (Buffer + (UINTN) FtwDevice->FtwWorkSpaceLbaInSpare * FtwDevice->SpareBlockSize + FtwDevice->FtwWorkSpaceBaseInSpare);
InitWorkSpaceHeader (WorkingBlockHeader);
WorkingBlockHeader->WorkingBlockValid = FTW_ERASE_POLARITY;
WorkingBlockHeader->WorkingBlockInvalid = FTW_ERASE_POLARITY;
@@ -629,6 +639,7 @@ FlushSpareBlockToWorkingBlock (
//
Status = FtwUpdateFvState (
FtwDevice->FtwFvBlock,
FtwDevice->WorkBlockSize,
FtwDevice->FtwWorkSpaceLba,
FtwDevice->FtwWorkSpaceBase + sizeof (EFI_GUID) + sizeof (UINT32),
WORKING_BLOCK_INVALID
@@ -643,17 +654,17 @@ FlushSpareBlockToWorkingBlock (
//
// Erase the working block
//
Status = FtwEraseBlock (FtwDevice, FtwDevice->FtwFvBlock, FtwDevice->FtwWorkBlockLba);
Status = FtwEraseBlock (FtwDevice, FtwDevice->FtwFvBlock, FtwDevice->FtwWorkBlockLba, FtwDevice->NumberOfWorkBlock);
if (EFI_ERROR (Status)) {
FreePool (Buffer);
return EFI_ABORTED;
}
//
// Write memory buffer to working block, using the FvbBlock protocol interface
// Write memory buffer to working block, using the FvBlock protocol interface
//
Ptr = Buffer;
for (Index = 0; Index < FtwDevice->NumberOfSpareBlock; Index += 1) {
Count = FtwDevice->BlockSize;
for (Index = 0; Index < FtwDevice->NumberOfWorkBlock; Index += 1) {
Count = FtwDevice->WorkBlockSize;
Status = FtwDevice->FtwFvBlock->Write (
FtwDevice->FtwFvBlock,
FtwDevice->FtwWorkBlockLba + Index,
@@ -682,6 +693,7 @@ FlushSpareBlockToWorkingBlock (
//
Status = FtwUpdateFvState (
FtwDevice->FtwFvBlock,
FtwDevice->WorkBlockSize,
FtwDevice->FtwWorkSpaceLba,
FtwDevice->FtwWorkSpaceBase + sizeof (EFI_GUID) + sizeof (UINT32),
WORKING_BLOCK_VALID
@@ -703,6 +715,7 @@ FlushSpareBlockToWorkingBlock (
@param FvBlock FVB Protocol interface to access SrcBlock and DestBlock
@param BlockSize The size of the block
@param Lba Lba of a block
@param Offset Offset on the Lba
@param NewBit New value that will override the old value if it can be change
@@ -717,6 +730,7 @@ FlushSpareBlockToWorkingBlock (
EFI_STATUS
FtwUpdateFvState (
IN EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock,
IN UINTN BlockSize,
IN EFI_LBA Lba,
IN UINTN Offset,
IN UINT8 NewBit
@@ -726,6 +740,14 @@ FtwUpdateFvState (
UINT8 State;
UINTN Length;
//
// Calculate the real Offset and Lba to write.
//
while (Offset >= BlockSize) {
Offset -= BlockSize;
Lba++;
}
//
// Read state from device, assume State is only one byte.
//
@@ -1015,10 +1037,10 @@ FindFvbForFtw (
UINTN Index;
EFI_PHYSICAL_ADDRESS FvbBaseAddress;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
EFI_FIRMWARE_VOLUME_HEADER *FwVolHeader;
EFI_FVB_ATTRIBUTES_2 Attributes;
EFI_FV_BLOCK_MAP_ENTRY *FvbMapEntry;
UINT32 LbaIndex;
UINTN BlockSize;
UINTN NumberOfBlocks;
HandleBuffer = NULL;
@@ -1056,80 +1078,92 @@ FindFvbForFtw (
continue;
}
FwVolHeader = (EFI_FIRMWARE_VOLUME_HEADER *) ((UINTN) FvbBaseAddress);
//
// Now, one FVB has one type of BlockSize.
//
Status = Fvb->GetBlockSize (Fvb, 0, &BlockSize, &NumberOfBlocks);
if (EFI_ERROR (Status)) {
continue;
}
if ((FtwDevice->FtwFvBlock == NULL) && (FtwDevice->WorkSpaceAddress >= FvbBaseAddress) &&
((FtwDevice->WorkSpaceAddress + FtwDevice->WorkSpaceLength) <= (FvbBaseAddress + FwVolHeader->FvLength))
) {
((FtwDevice->WorkSpaceAddress + FtwDevice->WorkSpaceLength) <= (FvbBaseAddress + BlockSize * NumberOfBlocks))) {
FtwDevice->FtwFvBlock = Fvb;
//
// To get the LBA of work space
//
if ((FwVolHeader->FvLength) > (FwVolHeader->HeaderLength)) {
//
// Now, one FV has one type of BlockLength
//
FvbMapEntry = &FwVolHeader->BlockMap[0];
for (LbaIndex = 1; LbaIndex <= FvbMapEntry->NumBlocks; LbaIndex += 1) {
if ((FtwDevice->WorkSpaceAddress >= (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)))
&& (FtwDevice->WorkSpaceAddress < (FvbBaseAddress + FvbMapEntry->Length * LbaIndex))) {
FtwDevice->FtwWorkSpaceLba = LbaIndex - 1;
for (LbaIndex = 1; LbaIndex <= NumberOfBlocks; LbaIndex += 1) {
if ((FtwDevice->WorkSpaceAddress >= (FvbBaseAddress + BlockSize * (LbaIndex - 1)))
&& (FtwDevice->WorkSpaceAddress < (FvbBaseAddress + BlockSize * LbaIndex))) {
FtwDevice->FtwWorkSpaceLba = LbaIndex - 1;
//
// Get the Work space size and Base(Offset)
//
FtwDevice->FtwWorkSpaceSize = FtwDevice->WorkSpaceLength;
FtwDevice->WorkBlockSize = BlockSize;
FtwDevice->FtwWorkSpaceBase = (UINTN) (FtwDevice->WorkSpaceAddress - (FvbBaseAddress + FtwDevice->WorkBlockSize * (LbaIndex - 1)));
FtwDevice->NumberOfWorkSpaceBlock = FTW_BLOCKS (FtwDevice->FtwWorkSpaceBase + FtwDevice->FtwWorkSpaceSize, FtwDevice->WorkBlockSize);
if (FtwDevice->FtwWorkSpaceSize >= FtwDevice->WorkBlockSize) {
//
// Get the Work space size and Base(Offset)
// Check the alignment of work space address and length, they should be block size aligned when work space size is larger than one block size.
//
FtwDevice->FtwWorkSpaceSize = FtwDevice->WorkSpaceLength;
FtwDevice->FtwWorkSpaceBase = (UINTN) (FtwDevice->WorkSpaceAddress - (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)));
break;
}
}
}
}
if ((FtwDevice->FtwBackupFvb == NULL) && (FtwDevice->SpareAreaAddress >= FvbBaseAddress) &&
((FtwDevice->SpareAreaAddress + FtwDevice->SpareAreaLength) <= (FvbBaseAddress + FwVolHeader->FvLength))
) {
FtwDevice->FtwBackupFvb = Fvb;
//
// To get the LBA of spare
//
if ((FwVolHeader->FvLength) > (FwVolHeader->HeaderLength)) {
//
// Now, one FV has one type of BlockLength
//
FvbMapEntry = &FwVolHeader->BlockMap[0];
for (LbaIndex = 1; LbaIndex <= FvbMapEntry->NumBlocks; LbaIndex += 1) {
if ((FtwDevice->SpareAreaAddress >= (FvbBaseAddress + FvbMapEntry->Length * (LbaIndex - 1)))
&& (FtwDevice->SpareAreaAddress < (FvbBaseAddress + FvbMapEntry->Length * LbaIndex))) {
//
// Get the NumberOfSpareBlock and BlockSize
//
FtwDevice->FtwSpareLba = LbaIndex - 1;
FtwDevice->BlockSize = FvbMapEntry->Length;
FtwDevice->NumberOfSpareBlock = FtwDevice->SpareAreaLength / FtwDevice->BlockSize;
//
// Check the range of spare area to make sure that it's in FV range
//
if ((FtwDevice->FtwSpareLba + FtwDevice->NumberOfSpareBlock) > FvbMapEntry->NumBlocks) {
DEBUG ((EFI_D_ERROR, "Ftw: Spare area is out of FV range\n"));
if (((FtwDevice->WorkSpaceAddress & (FtwDevice->WorkBlockSize - 1)) != 0) ||
((FtwDevice->WorkSpaceLength & (FtwDevice->WorkBlockSize - 1)) != 0)) {
DEBUG ((EFI_D_ERROR, "Ftw: Work space address or length is not block size aligned when work space size is larger than one block size\n"));
FreePool (HandleBuffer);
ASSERT (FALSE);
return EFI_ABORTED;
}
//
// Check the alignment of spare area address and length, they should be block size aligned
//
if (((FtwDevice->SpareAreaAddress & (FtwDevice->BlockSize - 1)) != 0) ||
((FtwDevice->SpareAreaLength & (FtwDevice->BlockSize - 1)) != 0)) {
DEBUG ((EFI_D_ERROR, "Ftw: Spare area address or length is not block size aligned\n"));
FreePool (HandleBuffer);
//
// Report Status Code EFI_SW_EC_ABORTED.
//
REPORT_STATUS_CODE ( (EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED), (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_EC_ABORTED));
ASSERT (FALSE);
CpuDeadLoop ();
}
break;
} else if ((FtwDevice->FtwWorkSpaceBase + FtwDevice->FtwWorkSpaceSize) > FtwDevice->WorkBlockSize) {
DEBUG ((EFI_D_ERROR, "Ftw: The work space range should not span blocks when work space size is less than one block size\n"));
FreePool (HandleBuffer);
ASSERT (FALSE);
return EFI_ABORTED;
}
break;
}
}
}
if ((FtwDevice->FtwBackupFvb == NULL) && (FtwDevice->SpareAreaAddress >= FvbBaseAddress) &&
((FtwDevice->SpareAreaAddress + FtwDevice->SpareAreaLength) <= (FvbBaseAddress + BlockSize * NumberOfBlocks))) {
FtwDevice->FtwBackupFvb = Fvb;
//
// To get the LBA of spare
//
for (LbaIndex = 1; LbaIndex <= NumberOfBlocks; LbaIndex += 1) {
if ((FtwDevice->SpareAreaAddress >= (FvbBaseAddress + BlockSize * (LbaIndex - 1)))
&& (FtwDevice->SpareAreaAddress < (FvbBaseAddress + BlockSize * LbaIndex))) {
//
// Get the NumberOfSpareBlock and BlockSize
//
FtwDevice->FtwSpareLba = LbaIndex - 1;
FtwDevice->SpareBlockSize = BlockSize;
FtwDevice->NumberOfSpareBlock = FtwDevice->SpareAreaLength / FtwDevice->SpareBlockSize;
//
// Check the range of spare area to make sure that it's in FV range
//
if ((FtwDevice->FtwSpareLba + FtwDevice->NumberOfSpareBlock) > NumberOfBlocks) {
DEBUG ((EFI_D_ERROR, "Ftw: Spare area is out of FV range\n"));
FreePool (HandleBuffer);
ASSERT (FALSE);
return EFI_ABORTED;
}
//
// Check the alignment of spare area address and length, they should be block size aligned
//
if (((FtwDevice->SpareAreaAddress & (FtwDevice->SpareBlockSize - 1)) != 0) ||
((FtwDevice->SpareAreaLength & (FtwDevice->SpareBlockSize - 1)) != 0)) {
DEBUG ((EFI_D_ERROR, "Ftw: Spare area address or length is not block size aligned\n"));
FreePool (HandleBuffer);
//
// Report Status Code EFI_SW_EC_ABORTED.
//
REPORT_STATUS_CODE ((EFI_ERROR_CODE | EFI_ERROR_UNRECOVERED), (EFI_SOFTWARE_DXE_BS_DRIVER | EFI_SW_EC_ABORTED));
ASSERT (FALSE);
CpuDeadLoop ();
}
break;
}
}
}
@@ -1140,6 +1174,8 @@ FindFvbForFtw (
(FtwDevice->FtwWorkSpaceLba == (EFI_LBA) (-1)) || (FtwDevice->FtwSpareLba == (EFI_LBA) (-1))) {
return EFI_ABORTED;
}
DEBUG ((EFI_D_INFO, "Ftw: FtwWorkSpaceLba - 0x%lx, WorkBlockSize - 0x%x, FtwWorkSpaceBase - 0x%x\n", FtwDevice->FtwWorkSpaceLba, FtwDevice->WorkBlockSize, FtwDevice->FtwWorkSpaceBase));
DEBUG ((EFI_D_INFO, "Ftw: FtwSpareLba - 0x%lx, SpareBlockSize - 0x%x\n", FtwDevice->FtwSpareLba, FtwDevice->SpareBlockSize));
return EFI_SUCCESS;
}
@@ -1161,7 +1197,6 @@ InitFtwProtocol (
{
EFI_STATUS Status;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *Fvb;
UINTN Length;
EFI_FAULT_TOLERANT_WRITE_HEADER *FtwHeader;
UINTN Offset;
EFI_HANDLE FvbHandle;
@@ -1174,15 +1209,38 @@ InitFtwProtocol (
if (EFI_ERROR (Status)) {
return EFI_NOT_FOUND;
}
//
// Calculate the start LBA of working block. Working block is an area which
// contains working space in its last block and has the same size as spare
// block, unless there are not enough blocks before the block that contains
// working space.
// Calculate the start LBA of working block.
//
FtwDevice->FtwWorkBlockLba = FtwDevice->FtwWorkSpaceLba - FtwDevice->NumberOfSpareBlock + 1;
ASSERT ((INT64) (FtwDevice->FtwWorkBlockLba) >= 0);
if (FtwDevice->FtwWorkSpaceSize >= FtwDevice->WorkBlockSize) {
//
// Working block is a standalone area which only contains working space.
//
FtwDevice->NumberOfWorkBlock = FtwDevice->NumberOfWorkSpaceBlock;
} else {
//
// Working block is an area which
// contains working space in its last block and has the same size as spare
// block, unless there are not enough blocks before the block that contains
// working space.
//
FtwDevice->NumberOfWorkBlock = (UINTN) (FtwDevice->FtwWorkSpaceLba + FtwDevice->NumberOfWorkSpaceBlock);
while (FtwDevice->NumberOfWorkBlock * FtwDevice->WorkBlockSize > FtwDevice->SpareAreaLength) {
FtwDevice->NumberOfWorkBlock--;
}
}
FtwDevice->FtwWorkBlockLba = FtwDevice->FtwWorkSpaceLba + FtwDevice->NumberOfWorkSpaceBlock - FtwDevice->NumberOfWorkBlock;
DEBUG ((EFI_D_INFO, "Ftw: NumberOfWorkBlock - 0x%x, FtwWorkBlockLba - 0x%lx\n", FtwDevice->NumberOfWorkBlock, FtwDevice->FtwWorkBlockLba));
//
// Calcualte the LBA and base of work space in spare block.
// Note: Do not assume Spare Block and Work Block have same block size.
//
WorkSpaceLbaOffset = FtwDevice->FtwWorkSpaceLba - FtwDevice->FtwWorkBlockLba;
FtwDevice->FtwWorkSpaceLbaInSpare = (EFI_LBA) (((UINTN) WorkSpaceLbaOffset * FtwDevice->WorkBlockSize + FtwDevice->FtwWorkSpaceBase) / FtwDevice->SpareBlockSize);
FtwDevice->FtwWorkSpaceBaseInSpare = ((UINTN) WorkSpaceLbaOffset * FtwDevice->WorkBlockSize + FtwDevice->FtwWorkSpaceBase) % FtwDevice->SpareBlockSize;
DEBUG ((EFI_D_INFO, "Ftw: WorkSpaceLbaInSpare - 0x%lx, WorkSpaceBaseInSpare - 0x%x\n", FtwDevice->FtwWorkSpaceLbaInSpare, FtwDevice->FtwWorkSpaceBaseInSpare));
//
// Initialize other parameters, and set WorkSpace as FTW_ERASED_BYTE.
@@ -1207,15 +1265,14 @@ InitFtwProtocol (
//
// Read from spare block
//
WorkSpaceLbaOffset = FtwDevice->FtwWorkSpaceLba - FtwDevice->FtwWorkBlockLba;
Length = FtwDevice->FtwWorkSpaceSize;
Status = FtwDevice->FtwBackupFvb->Read (
FtwDevice->FtwBackupFvb,
FtwDevice->FtwSpareLba + WorkSpaceLbaOffset,
FtwDevice->FtwWorkSpaceBase,
&Length,
FtwDevice->FtwWorkSpace
);
Status = ReadWorkSpaceData (
FtwDevice->FtwBackupFvb,
FtwDevice->SpareBlockSize,
FtwDevice->FtwSpareLba + FtwDevice->FtwWorkSpaceLbaInSpare,
FtwDevice->FtwWorkSpaceBaseInSpare,
FtwDevice->FtwWorkSpaceSize,
FtwDevice->FtwWorkSpace
);
ASSERT_EFI_ERROR (Status);
//
@@ -1304,7 +1361,7 @@ InitFtwProtocol (
FvbHandle = GetFvbByAddress ((EFI_PHYSICAL_ADDRESS) (UINTN) ((INT64) FtwDevice->SpareAreaAddress + FtwDevice->FtwLastWriteRecord->RelativeOffset), &Fvb);
if (FvbHandle != NULL) {
Status = FtwRestart (&FtwDevice->FtwInstance, FvbHandle);
DEBUG ((EFI_D_ERROR, "FtwLite: Restart last write - %r\n", Status));
DEBUG ((EFI_D_ERROR, "Ftw: Restart last write - %r\n", Status));
ASSERT_EFI_ERROR (Status);
}
FtwAbort (&FtwDevice->FtwInstance);