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//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2012, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
//*************************************************************************
// $Header: /Alaska/BIN/Chipset/Intel/SouthBridge/LynxPoint/Intel Pch SB Chipset/PchWrap/SmBusMemoryDown.c 1 12/11/12 1:09a Scottyang $
//
// $Date: 12/11/12 1:09a $
//*************************************************************************
// Revision History
// ----------------
// $Log:
//
//*************************************************************************
//<AMI_FHDR_START>
//
// Name: SmBusMemoryDown.c
//
// Description: SmBus support MemoryDown functions implementation
//
//<AMI_FHDR_END>
//*************************************************************************
#include <efi.h>
#include <AmiDxeLib.h>
#include <AmiCspLib.h>
#include <Protocol\SmBus.h>
EFI_SMBUS_HC_PROTOCOL *SmBusProtocol = NULL;
static EFI_SMBUS_HC_EXECUTE_OPERATION PchSmBusExecute = NULL;
EFI_EVENT gSmBusMemoryDownEvent;
VOID *gSmBusMemoryDownEventReg;
UINT8 IsRunMemoryDown = 0;
EFI_GUID gEfiSMBusProtocolGuid = EFI_SMBUS_HC_PROTOCOL_GUID;
#ifndef AMI_OVERRIDE_FOR_MEMORY_DOWN
#if defined(NB_OEM_DIMM1_STATUS) && (NB_OEM_DIMM1_STATUS == 0x02)
static UINT8 Dimm1SpdTbl[] = NB_OEM_DIMM1_SPD_DATA;
#endif
#if defined(NB_OEM_DIMM2_STATUS) && (NB_OEM_DIMM2_STATUS == 0x02)
static UINT8 Dimm2SpdTbl[] = NB_OEM_DIMM2_SPD_DATA;
#endif
#if defined(NB_OEM_DIMM3_STATUS) && (NB_OEM_DIMM3_STATUS == 0x02)
static UINT8 Dimm3SpdTbl[] = NB_OEM_DIMM3_SPD_DATA;
#endif
#if defined(NB_OEM_DIMM4_STATUS) && (NB_OEM_DIMM4_STATUS == 0x02)
static UINT8 Dimm4SpdTbl[] = NB_OEM_DIMM4_SPD_DATA;
#endif
#endif // AMI_OVERRIDE_FOR_MEMORY_DOWN
VOID OverrideSmBusNotify (
IN EFI_EVENT Event,
IN VOID *Context
);
//*************************************************************************
//<AMI_PHDR_START>
//
// Procedure: OverrideSmBusExecute
//
// Description: Init SmBus MemoryDown Protocol Execute..
//
// Input:
//
// Output:
//
//<AMI_PHDR_END>
//*************************************************************************
EFI_STATUS
EFIAPI
OverrideSmBusExecute (
IN EFI_SMBUS_HC_PROTOCOL *This,
IN EFI_SMBUS_DEVICE_ADDRESS SlaveAddress,
IN EFI_SMBUS_DEVICE_COMMAND Command,
IN EFI_SMBUS_OPERATION Operation,
IN BOOLEAN PecCheck,
IN OUT UINTN *Length,
IN OUT VOID *Buffer
)
{
UINT8 *DimmSpd = NULL;
UINT8 *BufferPoint = Buffer;
UINT16 i = 0;
if (IsRunMemoryDown) {
#ifdef NB_OEM_DIMM1_SPD_DATA
if(SlaveAddress.SmbusDeviceAddress == DIMM1_SMBUS_ADDRESS >> 1) {
DimmSpd = Dimm1SpdTbl;
}
#endif
#ifdef NB_OEM_DIMM2_SPD_DATA
if(SlaveAddress.SmbusDeviceAddress == DIMM2_SMBUS_ADDRESS >> 1) {
DimmSpd = Dimm2SpdTbl;
}
#endif
#ifdef NB_OEM_DIMM3_SPD_DATA
if(SlaveAddress.SmbusDeviceAddress == DIMM3_SMBUS_ADDRESS >> 1) {
DimmSpd = Dimm3SpdTbl;
}
#endif
#ifdef NB_OEM_DIMM4_SPD_DATA
if(SlaveAddress.SmbusDeviceAddress == DIMM4_SMBUS_ADDRESS >> 1) {
DimmSpd = Dimm4SpdTbl;
}
#endif
if (DimmSpd != NULL) {
for (i=0; i <= *Length; i++) {
*BufferPoint = DimmSpd[Command + i];
BufferPoint++;
}
return EFI_SUCCESS;
}
}
return PchSmBusExecute (
This,
SlaveAddress,
Command,
Operation,
PecCheck,
Length,
Buffer
);
}
//*************************************************************************
//<AMI_PHDR_START>
//
// Procedure: OverrideSmBusNotify
//
// Description: Override SmBus Protocol Execute.
//
// Input:
// IN EFI_LEGACY_REGION_PROTOCOL *This,
// IN UINT32 Start,
// IN UINT32 Length,
// OUT UINT32 *Granularity,
// IN BOOLEAN *On
//
// Output:
// Status of the operation
//
//<AMI_PHDR_END>
//*************************************************************************
VOID OverrideSmBusNotify (
IN EFI_EVENT Event,
IN VOID *Context )
{
EFI_STATUS Status;
Status = pBS->LocateProtocol (&gEfiSmbusProtocolGuid, NULL, (VOID**) &SmBusProtocol);
if (!EFI_ERROR (Status)) {
PchSmBusExecute = SmBusProtocol->Execute;
SmBusProtocol->Execute = OverrideSmBusExecute;
}
// Kill event
pBS->CloseEvent(Event);
}
//*************************************************************************
//<AMI_PHDR_START>
//
// Procedure: InitSmBusMemoryDown
//
// Description: Override the SmBus protocol.
//
// Input:
// IN EFI_HANDLE ImageHandle,
// IN EFI_SYSTEM_TABLE *SystemTable
//
// Output:
// Status of the operation
//
// Notes:
// Here is the control flow of this function:
// 1. Get SmBus protocol.
// 2. Override the SmBus protocol.
//
//<AMI_PHDR_END>
//*************************************************************************
EFI_STATUS InitSmBusMemoryDown(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
NB_SETUP_DATA *NBSetupData = NULL;
UINTN VariableSize = sizeof(NB_SETUP_DATA);
InitAmiLib(ImageHandle, SystemTable);
Status = pBS->AllocatePool( EfiBootServicesData, \
VariableSize, \
&NBSetupData );
ASSERT_EFI_ERROR(Status);
GetNbSetupData( pRS, NBSetupData, FALSE );
if (NBSetupData->IsRunMemoryDown) {
IsRunMemoryDown = NBSetupData->IsRunMemoryDown;
//NbSetupdata Pass to SaGlobalNvsArea.
Status = pBS->CreateEvent (
EFI_EVENT_NOTIFY_SIGNAL,
TPL_CALLBACK,
OverrideSmBusNotify,
NULL,
&gSmBusMemoryDownEvent
);
if (!EFI_ERROR (Status)) {
Status = pBS->RegisterProtocolNotify (
&gEfiSMBusProtocolGuid,
gSmBusMemoryDownEvent,
&gSmBusMemoryDownEventReg
);
}
}
// Free memory used for setup data
pBS->FreePool( NBSetupData );
return Status;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1985-2012, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
