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/** @file
MP Support functions
@copyright
Copyright (c) 2007 - 2012 Intel Corporation. All rights reserved
This software and associated documentation (if any) is furnished
under a license and may only be used or copied in accordance
with the terms of the license. Except as permitted by such
license, no part of this software or documentation may be
reproduced, stored in a retrieval system, or transmitted in any
form or by any means without the express written consent of
Intel Corporation.
This file contains an 'Intel Peripheral Driver' and is
licensed for Intel CPUs and chipsets under the terms of your
license agreement with Intel or your vendor. This file may
be modified by the user, subject to additional terms of the
license agreement
**/
#if !defined(EDK_RELEASE_VERSION) || (EDK_RELEASE_VERSION < 0x00020000)
#include "EdkIIGlueDxe.h"
#include "MpService.h"
#include EFI_PROTOCOL_DEFINITION (MpService)
#endif
extern EFI_CPU_MICROCODE_HEADER **mMicrocodePointerBuffer;
ACPI_CPU_DATA *mAcpiCpuData;
MP_SYSTEM_DATA *mMPSystemData;
///
/// Function declarations
///
/**
Initializes MP support in the system.
@retval EFI_SUCCESS - Multiple processors are initialized successfully.
@retval EFI_OUT_OF_RESOURCES - No enough resoruces (such as out of memory).
**/
EFI_STATUS
InitializeMpSupport (
VOID
)
{
EFI_STATUS Status;
MP_CPU_RESERVED_DATA *MpCpuReservedData;
///
/// Allocate memory for MP CPU related data below 4G
///
Status = AllocateReservedMemoryBelow4G (
sizeof (MP_CPU_RESERVED_DATA),
(VOID **) &MpCpuReservedData
);
if (EFI_ERROR (Status)) {
return Status;
}
ZeroMem (MpCpuReservedData, sizeof (MP_CPU_RESERVED_DATA));
mMPSystemData = &(MpCpuReservedData->MPSystemData);
mAcpiCpuData = &(MpCpuReservedData->AcpiCpuData);
///
/// Copy microcode to allocated memory
///
CopyMem (
MpCpuReservedData->MicrocodePointerBuffer,
mMicrocodePointerBuffer,
sizeof (EFI_CPU_MICROCODE_HEADER *) * (NUMBER_OF_MICROCODE_UPDATE + 1)
);
///
/// Initialize ACPI_CPU_DATA data
///
mAcpiCpuData->CpuPrivateData = (EFI_PHYSICAL_ADDRESS) (UINTN) (&(mMPSystemData->S3DataPointer));
mAcpiCpuData->S3BootPath = FALSE;
mAcpiCpuData->MicrocodePointerBuffer = (EFI_PHYSICAL_ADDRESS) MpCpuReservedData->MicrocodePointerBuffer;
mAcpiCpuData->GdtrProfile = (EFI_PHYSICAL_ADDRESS) & (MpCpuReservedData->GdtrProfile);
mAcpiCpuData->IdtrProfile = (EFI_PHYSICAL_ADDRESS) & (MpCpuReservedData->IdtrProfile);
///
/// Initialize MP services
///
InitializeMpServices ();
return EFI_SUCCESS;
}
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