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code scrub on VariableRuntime Dxe driver

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@7016 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
eric_tian
2008-12-12 09:27:17 +00:00
parent 57dba20b29
commit 7c80e839f7
5 changed files with 348 additions and 385 deletions
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66
MdeModulePkg/Universal/Variable/RuntimeDxe/Reclaim.c
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@@ -16,8 +16,21 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include "Variable.h"
#include <VariableFormat.h>
/**
Gets firmware volume block handle by given address.
This function gets firmware volume block handle whose
address range contains the parameter Address.
@param Address Address which should be contained
by returned FVB handle
@param FvbHandle Pointer to FVB handle for output
@retval EFI_SUCCESS FVB handle successfully returned
@retval EFI_NOT_FOUND Fail to find FVB handle by address
**/
EFI_STATUS
GetFvbHandleByAddress (
IN EFI_PHYSICAL_ADDRESS Address,
@@ -79,6 +92,23 @@ GetFvbHandleByAddress (
return Status;
}
/**
Gets LBA of block and offset by given address.
This function gets the Logical Block Address (LBA) of firmware
volume block containing the given address, and the offset of
address on the block.
@param Address Address which should be contained
by returned FVB handle
@param Lba Pointer to LBA for output
@param Offset Pointer to offset for output
@retval EFI_SUCCESS LBA and offset successfully returned
@retval EFI_NOT_FOUND Fail to find FVB handle by address
@retval EFI_ABORTED Fail to find valid LBA and offset
**/
EFI_STATUS
GetLbaAndOffsetByAddress (
IN EFI_PHYSICAL_ADDRESS Address,
@@ -148,28 +178,28 @@ GetLbaAndOffsetByAddress (
return EFI_ABORTED;
}
/**
Writes a buffer to variable storage space, in the working block.
This function writes a buffer to variable storage space into firmware
volume block device. The destination is specified by parameter
VariableBase. Fault Tolerant Write protocol is used for writing.
@param VariableBase Base address of variable to write
@param Buffer Point to the data buffer
@param BufferSize The number of bytes of the data Buffer
@retval EFI_SUCCESS The function completed successfully
@retval EFI_NOT_FOUND Fail to locate Fault Tolerant Write protocol
@retval EFI_ABORTED The function could not complete successfully
**/
EFI_STATUS
FtwVariableSpace (
IN EFI_PHYSICAL_ADDRESS VariableBase,
IN UINT8 *Buffer,
IN UINTN BufferSize
)
/*++
Routine Description:
Write a buffer to Variable space, in the working block.
Arguments:
FvbHandle - Indicates a handle to FVB to access variable store
Buffer - Point to the input buffer
BufferSize - The number of bytes of the input Buffer
Returns:
EFI_SUCCESS - The function completed successfully
EFI_ABORTED - The function could not complete successfully
EFI_NOT_FOUND - Locate FVB protocol by handle fails
--*/
{
EFI_STATUS Status;
EFI_HANDLE FvbHandle;
@@ -224,7 +254,7 @@ Returns:
FvbHandle,
VarLba, // LBA
VarOffset, // Offset
&FtwBufferSize, // NumBytes,
&FtwBufferSize, // NumBytes
FtwBuffer
);