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//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2010, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//*************************************************************************
// $Header: /Alaska/SOURCE/Modules/PTT/FastBootDxe.c 2 4/07/11 8:20a Bibbyyeh $
//
// $Revision: 2 $
//
// $Date: 4/07/11 8:20a $
//*************************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/PTT/FastBootDxe.c $
//
// 2 4/07/11 8:20a Bibbyyeh
// [TAG] EIP57430
// [Category] New Feature
// [Description] PTT module is not compatible with core 4.6.5.0. Modify
// it to make build pass.
// [Files] FastBootDxe.c
//
// 1 3/02/11 2:23a Bibbyyeh
// [TAG] EIP51391
// [Category] Bug Fix
// [Severity] Normal
// [Symptom] In windows, use DmiEdit to change SMBIOS data, and update.
// SMBIOS will update failure in next boot.
// [RootCause] The reason cause this issue is, ROM will copy to ram in
// end of PEI phase. When SMBIOS Dxe driver update modified data to flash,
// the firmware volume block protocol is pointer to RAM, not flash. So it
// will cause update failure.
// [Solution] Before SMBIOS Dxe driver, restore the Base Address of
// Firmware Volume Block Protocol from RAM to ROM.
// [Files] FastBoot.sdl FastBoot.mak FastBoot.cif FastBootDxe.c
//
//
//*************************************************************************
//<AMI_FHDR_START>
//
// Name: FastBootDxe.c
//
// Description:
// Implementation of fast boot Dxe functionality
//
//<AMI_FHDR_END>
//*************************************************************************
//----------------------------------------------------------------------------
// Includes
// Statements that include other files
#include <AmiDxeLib.h>
#include <AmiCspLib.h>
#include <Protocol\FirmwareVolumeBlock.h>
#include <FFS.h>
//----------------------------------------------------------------------------
// Function Externs
//----------------------------------------------------------------------------
// Local prototypes
typedef struct {
UINTN Base;
UINTN Length;
} LBA_CACHE;
typedef struct {
MEMMAP_DEVICE_PATH MemMapDevPath;
EFI_DEVICE_PATH_PROTOCOL EndDevPath;
} FV_DEVICE_PATH;
typedef struct {
UINTN Signature;
EFI_HANDLE Handle;
FV_DEVICE_PATH DevicePath;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL FwVolBlockInstance;
UINTN NumBlocks;
LBA_CACHE *LbaCache;
UINT32 FvbAttributes;
EFI_PHYSICAL_ADDRESS BaseAddress;
} EFI_FW_VOL_BLOCK_DEVICE;
#define FVB_DEVICE_SIGNATURE EFI_SIGNATURE_32('_','F','V','B')
#ifndef _CR
#define _CR(Record, TYPE, Field) ((TYPE *) ((CHAR8 *) (Record) - (CHAR8 *) &(((TYPE *) 0)->Field)))
#endif
#ifndef CR
#define CR(Record, TYPE, Field, Signature) _CR (Record, TYPE, Field)
#endif
#define FVB_DEVICE_FROM_THIS(a) \
CR(a, EFI_FW_VOL_BLOCK_DEVICE, FwVolBlockInstance, FVB_DEVICE_SIGNATURE)
//----------------------------------------------------------------------------
// Local Variables
//----------------------------------------------------------------------------
// Function Definitions
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: FastBootDxeEntry
//
// Description: DXE Entry Point for FastBoot Driver.
//
// Input: EFI_HANDLE - ImageHandle
// EFI_SYSTEM_TABLE* - SystemTable
//
// Output: EFI_STATUS
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
FastBootDxeEntry (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_GUID EfiFirmwareVolumeBlockProtocolGuid = FW_VOLUME_BLOCK_PROTOCOL_GUID;
EFI_STATUS Status;
UINTN NumHandles;
UINT8 i;
EFI_HANDLE *HandleBuffer;
EFI_FW_VOL_BLOCK_DEVICE *FvbDevice;
EFI_FIRMWARE_VOLUME_BLOCK_PROTOCOL *FvBlock;
InitAmiLib(ImageHandle, SystemTable);
TRACE((-1,"FB:Restore the Base Address of Firmware Volume Block Protocol from RAM to ROM\n"));
// Restore the Base Address of Firmware Volume Block Protocol from RAM
// to ROM.
Status = pBS->LocateHandleBuffer ( ByProtocol, \
&EfiFirmwareVolumeBlockProtocolGuid, \
NULL, \
&NumHandles, \
&HandleBuffer );
if (EFI_ERROR(Status)) return Status;
for (i = 0; i < NumHandles; ++i) {
Status = pBS->HandleProtocol ( HandleBuffer[i], \
&EfiFirmwareVolumeBlockProtocolGuid, \
&FvBlock );
if (EFI_ERROR(Status)) continue;
FvbDevice = FVB_DEVICE_FROM_THIS (FvBlock);
#if PI_SPECIFICATION_VERSION < 0x00010000
if (!(FvbDevice->FvbAttributes & EFI_FVB_MEMORY_MAPPED)) continue;
#else
if (!(FvbDevice->FvbAttributes & EFI_FVB2_MEMORY_MAPPED)) continue;
#endif
if (FvbDevice->NumBlocks == FV_BB_BLOCKS)
FvbDevice->BaseAddress = FV_BB_BASE;
else if (FvbDevice->NumBlocks == FV_MAIN_BLOCKS)
FvbDevice->BaseAddress = FV_MAIN_BASE;
}
return EFI_SUCCESS;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2009, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
