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//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//**********************************************************************
// $Header: /Alaska/SOURCE/Modules/PEI Ram Boot/PeiRamBootOfbd.c 3 6/18/14 11:57p Calvinchen $
//
// $Revision: 3 $
//
// $Date: 6/18/14 11:57p $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/PEI Ram Boot/PeiRamBootOfbd.c $
//
// 3 6/18/14 11:57p Calvinchen
// Bug Fixed: System hangs with using AFU.
//
// 2 5/05/14 5:03a Calvinchen
// [TAG] EIP166551
// [Category] Spec Update
// [Severity] Important
// [Description] Runtime attribute set for the some of the variable used
// by PEI Ram Boot driver and needs to be reviewed
// [Files] PeiRamBootDxe.c
// PeiRamBootOfbd.c
// PeiRamBoot.chm
// PeiRamBoot.cif
//
// 1 2/11/11 3:15a Calvinchen
// Bug Fixed : System hangs after reflashed BIOS with warm reset if
// PEI_RAM_BOOT_S3_SUPPORT = 1 with fast warm boot support.
//
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: PeiRamBootOfbd.c
//
// Description: If system updated BIOS with warm reset, PeiRamBoot module
// will not copy rom to ram in sequence boot, and, it could
// cause system crashed. For avoiding this situation, BIOS
// delete the PEI RAM Boot related variables if system executed
// AFU.
//
//<AMI_FHDR_END>
//**********************************************************************
//----------------------------------------------------------------------------
// Includes
// Statements that include other files
#include <AmiLib.h>
#include <AmiDxeLib.h>
#include <Setup.h>
#include <HOB.h>
#include "PeiRamBoot.h"
#include "OFBD.h"
//----------------------------------------------------------------------------
// Function Externs
//----------------------------------------------------------------------------
// Local prototypes
typedef EFI_STATUS (*SHOW_BOOT_TIME_VARIABLES)(BOOLEAN Show);
typedef struct{
SHOW_BOOT_TIME_VARIABLES ShowBootTimeVariables;
} AMI_NVRAM_CONTROL_PROTOCOL;
static AMI_NVRAM_CONTROL_PROTOCOL *gpNvramControl = NULL;
//----------------------------------------------------------------------------
// Local Variables
//----------------------------------------------------------------------------
// Function Definitions
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: PeiRamBootOfbdEntry
//
// Description:
//
// Input:
// IN VOID *Buffer
// IN OUT UINT8 *pOFBDDataHandled
// Output:
// VOID
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
VOID PeiRamBootOfbdEntry (
IN VOID *Buffer,
IN OUT UINT8 *pOFBDDataHandled )
{
EFI_GUID RomImageAddressGuid = ROM_IMAGE_ADDRESS_GUID;
EFI_STATUS Status;
EFI_PHYSICAL_ADDRESS HobRomImageAddress;
UINTN VariableSize;
static BOOLEAN blIsProcessed = FALSE;
if (blIsProcessed == FALSE) blIsProcessed = TRUE;
else return;
// Temporarily enable Nvram Variable Boot Time Access permission.
if (gpNvramControl) gpNvramControl->ShowBootTimeVariables(TRUE);
VariableSize = sizeof(EFI_PHYSICAL_ADDRESS);
Status = pRS->GetVariable ( L"HobRomImage", \
&RomImageAddressGuid, \
NULL, \
&VariableSize, \
&HobRomImageAddress );
if (!EFI_ERROR(Status)) {
// Delete HobRomImage Variable if system is executing AFU for forcing BIOS
// copy rom to image in sequence boot.
VariableSize = 0;
Status = pRS->SetVariable ( L"HobRomImage", \
&RomImageAddressGuid, \
EFI_VARIABLE_NON_VOLATILE | \
EFI_VARIABLE_BOOTSERVICE_ACCESS,
VariableSize, \
&HobRomImageAddress );
}
// Disable Nvram Variable Boot Time Access permission.
if (gpNvramControl) gpNvramControl->ShowBootTimeVariables(FALSE);
return;
}
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
// Procedure: PeiRamBootOfbdInSmm
//
// Description:
//
// Input:
// VOID
//
// Output:
// VOID
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
VOID PeiRamBootOfbdInSmm (VOID)
{
EFI_STATUS Status;
EFI_SMM_BASE2_PROTOCOL *pSmmBase2;
EFI_SMM_SYSTEM_TABLE2 *mSmst;
UINTN i;
EFI_CONFIGURATION_TABLE *Table;
static EFI_GUID gAmiNvramControlProtocolGuid = \
{ 0xf7ca7568, 0x5a09, 0x4d2c, { 0x8a, 0x9b, 0x75, 0x84, 0x68, 0x59, 0x2a, 0xe2 } };
Status = pBS->LocateProtocol(&gEfiSmmBase2ProtocolGuid, NULL, &pSmmBase2);
if (EFI_ERROR(Status)) return ;
Status = pSmmBase2->GetSmstLocation (pSmmBase2, &mSmst);
if (EFI_ERROR(Status)) return ;
Table = mSmst->SmmConfigurationTable;
for (i = mSmst->NumberOfTableEntries; i; --i, ++Table) {
if (guidcmp(&Table->VendorGuid, &gAmiNvramControlProtocolGuid)) continue;
gpNvramControl = (AMI_NVRAM_CONTROL_PROTOCOL*)Table->VendorTable;
break;
}
return;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2011, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
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