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//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1987-2013, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//****************************************************************************
// $Header: /Alaska/SOURCE/Modules/SharkBayRefCodes/Haswell/AMI Cpu PKG/CPU Core/MicrocodeUpdate/FwhFvb.c 1 2/07/12 3:59a Davidhsieh $
//
// $Revision: 1 $
//
// $Date: 2/07/12 3:59a $
//
//****************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/SharkBayRefCodes/Haswell/AMI Cpu PKG/CPU Core/MicrocodeUpdate/FwhFvb.c $
//
// 1 2/07/12 3:59a Davidhsieh
//
//****************************************************************************
//<AMI_FHDR_START>
//----------------------------------------------------------------------------
//
// Name: FwhFvb.c
//
// Description:
// This file contains code for flash update used by the MicrocodeUpdate module.
//
//----------------------------------------------------------------------------
//<AMI_FHDR_END>
#include <Efi.h>
#include "Flash.h"
#include "Token.h"
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: FwhFvbErase
//
// Description: This function erases a block of NVRAM.
//
// Input: Address - Address of the block to erase
//
// Output: Return Status based on errors that occurred while erasing.
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS FwhErase(
IN UINTN Address,
IN UINTN NumberOfBytes
)
{
UINTN FlashBlockStart = BLOCK(Address);
UINTN FlashBlockEnd = BLOCK(Address + NumberOfBytes - 1);
UINTN FlashBlock;
BOOLEAN bStatus;
FlashDeviceWriteEnable();
for (FlashBlock = FlashBlockStart; FlashBlock <= FlashBlockEnd; FlashBlock += FLASH_BLOCK_SIZE) {
FlashBlockWriteEnable((UINT8*)FlashBlock);
bStatus = FlashEraseBlock((UINT8*)FlashBlock);
FlashBlockWriteDisable((UINT8*)FlashBlock);
if (!bStatus) break;
}
FlashDeviceWriteDisable();
return bStatus ? EFI_SUCCESS : EFI_DEVICE_ERROR;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: FwhWrite
//
// Description: This function writes a block of NVRAM.
//
// Input: Address - Address of the block to write.
// Buffer - Pointer to a buffer containing data to write.
// NumberOfBytes - The number of bytes to write
//
// Output: Return Status based on errors that occurred while writing.
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS FwhWrite(
IN UINT8 *Buffer,
IN UINTN Address,
IN UINTN NumberOfBytes
)
{
BOOLEAN bStatus;
UINTN FlashBlockStart = BLOCK(Address);
UINTN FlashBlockEnd = BLOCK(Address + NumberOfBytes - 1);
UINTN FlashBlock;
FlashDeviceWriteEnable();
for (FlashBlock = FlashBlockStart; FlashBlock <= FlashBlockEnd; FlashBlock += FLASH_BLOCK_SIZE) {
FlashBlockWriteEnable((UINT8*)FlashBlock);
}
bStatus = FlashProgram((UINT8*)Address, Buffer, (UINT32)NumberOfBytes);
for (FlashBlock = FlashBlockStart; FlashBlock <= FlashBlockEnd; FlashBlock += FLASH_BLOCK_SIZE) {
FlashBlockWriteDisable((UINT8*)FlashBlock);
}
FlashDeviceWriteDisable();
return bStatus ? EFI_SUCCESS : EFI_DEVICE_ERROR;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1987-2013, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
