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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/AMI CPU S3 Pei/AmiCpuS3Pei.c 2 9/28/12 5:40a Davidhsieh $
//
// $Revision: 2 $
//
// $Date: 9/28/12 5:40a $
//**********************************************************************
// Revision History
// ----------------
// $Log: /Alaska/SOURCE/Modules/SharkBayRefCodes/Haswell/AMI Cpu PKG/AMI CPU S3 Pei/AmiCpuS3Pei.c $
//
// 2 9/28/12 5:40a Davidhsieh
// Wait APIC idle after sending SMM IPI
//
// 1 9/26/12 10:45a Davidhsieh
//
//**********************************************************************
//<AMI_FHDR_START>
//
// Name: AmiCpuS3Pei.c
//
// Description:
//
//<AMI_FHDR_END>
//**********************************************************************
//
#include <PEI.h>
#include <AmiPeiLib.h>
#include <AmiCspLib.h>
#include <Ppi\Stall.h>
#include <Ppi\ReadOnlyVariable.h>
#include <Setup.h>
#include <token.h>
#include "Core/CPU/CPU.h"
#include "Core/CPU/CpuCspLib.h"
EFI_GUID gSmmHobGuid = SMM_HOB_GUID;
EFI_GUID gPeiReadOnlyVariablePpiGuid = EFI_PEI_READ_ONLY_VARIABLE_PPI_GUID;
EFI_GUID gEfiPeiStallPpiGuid = EFI_PEI_STALL_PPI_GUID;
EFI_GUID gMpCpuApicIdDataGuid = MP_CPU_APIC_ID_DATA_GUID;
#define SMM_ASM_FIXUP_SMM_BASE 0x38002
#define SMM_ASM_FIXUP_IED_ZERO_MEM 0x38029
#define SMM_ASM_BASE_CHANGE_FLAG 0x3808f
#define APIC_SMI (2 << 8)
#define APIC_DELIVERY_STATUS (1 << 12)
#define APIC_LEVEL_ASSERT (1 << 14)
#define APIC_NO_SHORT_HAND (0 << 18)
//<AMI_PHDR_START>
//----------------------------------------------------------------------------
//
// Procedure: AmiCpuS3PeiEntry
//
// Description: PEI Entry Point for Intel TXT Driver.
//
// Input: EFI_HANDLE - ImageHandle
// EFI_SYSTEM_TABLE* - SystemTable
//
// Output: None.
//
//----------------------------------------------------------------------------
//<AMI_PHDR_END>
EFI_STATUS
AmiCpuS3PeiEntry (
IN EFI_FFS_FILE_HEADER *FfsHeader,
IN EFI_PEI_SERVICES **PeiServices
)
{
EFI_STATUS Status;
EFI_BOOT_MODE BootMode;
VOID *FirstHob;
SMM_HOB *SmmHob;
EFI_PEI_READ_ONLY_VARIABLE_PPI *ReadOnlyVariable;
EFI_PEI_STALL_PPI *PeiStall;
MP_CPU_APICID_DATA MpCpuApicIdData;
UINTN VariableSize = sizeof(MP_CPU_APICID_DATA);
BOOLEAN ApicIdFromVariable = FALSE;
VOID *SaveBuffer;
UINT8 ApicId;
UINT8 i, j=0;
(*PeiServices)->GetBootMode(PeiServices, &BootMode);
if (BootMode != BOOT_ON_S3_RESUME)
return EFI_SUCCESS;
Status = (*PeiServices)->LocatePpi (
PeiServices, &gPeiReadOnlyVariablePpiGuid, 0, NULL, &ReadOnlyVariable
);
ASSERT_PEI_ERROR(PeiServices, Status);
Status = (*PeiServices)->LocatePpi(
PeiServices, &gEfiPeiStallPpiGuid, 0, NULL, &PeiStall
);
ASSERT_PEI_ERROR(PeiServices, Status);
if(!EFI_ERROR(Status)){
Status = ReadOnlyVariable->GetVariable (
PeiServices,
L"CPUS3APICID",
&gMpCpuApicIdDataGuid,
NULL,
&VariableSize,
&MpCpuApicIdData
);
if(Status == EFI_SUCCESS)
ApicIdFromVariable = TRUE; //If CPU S3 APIC ID data found, use local data as CPU APIC ID
}
(*PeiServices)->GetHobList(PeiServices, &FirstHob);
SmmHob = (SMM_HOB*)FirstHob;
while (!EFI_ERROR(Status = FindNextHobByType(EFI_HOB_TYPE_GUID_EXTENSION, &SmmHob)))
{
if (guidcmp(&SmmHob->EfiHobGuidType.Name, &gSmmHobGuid) == 0)
break;
}
if (!EFI_ERROR(Status))
{
//Allocate memory for temporarly perserve the 3000:8000 data.
Status = (*PeiServices)->AllocatePool(
PeiServices,
SmmGetBaseSaveBufferSize(),
&SaveBuffer
);
ASSERT_PEI_ERROR(PeiServices, Status);
SmmSetupDefaultHandler(SaveBuffer, SmmHob);
for (i = 0; i < SmmHob->NumCpus; ++i)
{
*(UINT32*)SMM_ASM_FIXUP_SMM_BASE = (UINT32)SmmHob->SmmBase[i];
*(volatile UINT8*)SMM_ASM_BASE_CHANGE_FLAG = 0; //Initialize Flag
if (ApicIdFromVariable) ApicId = MpCpuApicIdData.ApicId[i];
else ApicId = j;
MemReadWrite32((UINT32*)(LOCAL_APIC_BASE + APIC_ICR_HIGH_REGISTER), ApicId << 24, 0x00ffffff);
MemReadWrite32((UINT32*)(LOCAL_APIC_BASE + APIC_ICR_LOW_REGISTER), APIC_NO_SHORT_HAND + APIC_LEVEL_ASSERT + APIC_SMI, 0);
while (!(*(volatile UINT8*)SMM_ASM_BASE_CHANGE_FLAG))
{
CPULib_Pause(); //Wait on Flag
}
++*(UINT16*)SMM_ASM_FIXUP_IED_ZERO_MEM; //Only 0, for first thread to clear IED memory.
PeiStall->Stall(PeiServices, PeiStall, 50);
//Wait until IPI is Idle
while(
MemRead32((UINT32*)(LOCAL_APIC_BASE + APIC_ICR_LOW_REGISTER)) & APIC_DELIVERY_STATUS
);
if (!ApicIdFromVariable){
if (IsHtEnabled()) j++;
else j += 2;
}
}
SmmRemoveDefaultHandler(SaveBuffer);
}
return EFI_SUCCESS;
}
//*************************************************************************
//*************************************************************************
//** **
//** (C)Copyright 1987-2013, American Megatrends, Inc. **
//** **
//** All Rights Reserved. **
//** **
//** 5555 Oakbrook Parkway, Suite 200, Norcross, GA 30093 **
//** **
//** Phone: (770)-246-8600 **
//** **
//*************************************************************************
//*************************************************************************
|
