FrequencyDetect.c File Reference

#include <Uefi.h>
#include <Guid/OcVariable.h>
#include <Guid/AppleHob.h>
#include <Guid/ApplePlatformInfo.h>
#include <Guid/AcpiDescription.h>
#include <IndustryStandard/CpuId.h>
#include <IndustryStandard/GenericIch.h>
#include <IndustryStandard/McpMemoryController.h>
#include <Protocol/PciIo.h>
#include <Pi/PiBootMode.h>
#include <Pi/PiHob.h>
#include <Library/BaseLib.h>
#include <Library/BaseMemoryLib.h>
#include <Library/BaseOverflowLib.h>
#include <Library/DebugLib.h>
#include <Library/HobLib.h>
#include <Library/IoLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/OcCpuLib.h>
#include <Library/PciLib.h>
#include <Library/OcMiscLib.h>
#include <Library/OcVariableLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <IndustryStandard/ProcessorInfo.h>
#include <Register/Msr.h>
#include "OcCpuInternals.h"

Go to the source code of this file.

Functions
UINTN	InternalGetPmTimerAddr (OUT CONST CHAR8 **Type OPTIONAL)
UINT64	InternalCalculateTSCFromPMTimer (IN BOOLEAN Recalculate)
STATIC UINT64	InternalSelectAppleFsbFrequency (IN UINT64 *FsbFrequency, IN UINT32 FsbFrequncyCount)
UINT64	InternalCalculateTSCFromApplePlatformInfo (OUT UINT64 *FSBFrequency OPTIONAL, IN BOOLEAN Recalculate)
UINT64	InternalCalculateARTFrequencyIntel (OUT UINT64 *CPUFrequency, OUT UINT64 *TscAdjustPtr OPTIONAL, IN BOOLEAN Recalculate)
UINT64	InternalCalculateVMTFrequency (OUT UINT64 *FSBFrequency OPTIONAL, OUT BOOLEAN *UnderHypervisor OPTIONAL)
UINT64	OcGetTSCFrequency (VOID)

Detailed Description

Copyright (C) 2016 - 2017, The HermitCrabs Lab. All rights reserved.

All rights reserved.

This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

Definition in file FrequencyDetect.c.

Function Documentation

InternalCalculateARTFrequencyIntel()

UINT64 InternalCalculateARTFrequencyIntel	(	OUT UINT64 *	CPUFrequency,
		OUT UINT64 *TscAdjustPtr	OPTIONAL,
		IN BOOLEAN	Recalculate )

Calculate the ART frequency and derieve the CPU frequency for Intel CPUs

Parameters

[out]	CPUFrequency	The derieved CPU frequency.
[out]	TscAdjustPtr	Adjustment value for TSC, optional.
[in]	Recalculate	Do not re-use previously cached information.

Return values

The	calculated ART frequency.

Definition at line 474 of file FrequencyDetect.c.

InternalCalculateTSCFromApplePlatformInfo()

UINT64 InternalCalculateTSCFromApplePlatformInfo	(	OUT UINT64 *FSBFrequency	OPTIONAL,
		IN BOOLEAN	Recalculate )

Calculate the TSC frequency via Apple Platform Info

Parameters

[out]	FSBFrequency	Updated FSB frequency, optional.
[in]	Recalculate	Do not re-use previously cached information.

Return values

The	calculated TSC frequency.

Definition at line 345 of file FrequencyDetect.c.

InternalCalculateTSCFromPMTimer()

UINT64 InternalCalculateTSCFromPMTimer

(

IN BOOLEAN

Recalculate

)

Calculate the TSC frequency via PM timer

Parameters

[in]

Recalculate

Do not re-use previously cached information.

Return values

The	calculated TSC frequency.

Definition at line 173 of file FrequencyDetect.c.

InternalCalculateVMTFrequency()

UINT64 InternalCalculateVMTFrequency	(	OUT UINT64 *FSBFrequency	OPTIONAL,
		OUT BOOLEAN *UnderHypervisor	OPTIONAL )

Calculate the CPU frequency via VMT for hypervisors

Parameters

[out]	FSBFrequency	FSB frequency, optional.
[out]	UnderHypervisor	Hypervisor status, optional.

Return values

CPU	frequency or 0.

Definition at line 646 of file FrequencyDetect.c.

InternalGetPmTimerAddr()

UINTN InternalGetPmTimerAddr

(

OUT CONST CHAR8 **Type

OPTIONAL

)

Obtain ACPI PM timer address for this BSP.

Parameters

[out]

Type

Address source type, optional.

Return values

ACPI	PM timer address or 0.

Definition at line 46 of file FrequencyDetect.c.

InternalSelectAppleFsbFrequency()

STATIC UINT64 InternalSelectAppleFsbFrequency	(	IN UINT64 *	FsbFrequency,
		IN UINT32	FsbFrequncyCount )

Definition at line 288 of file FrequencyDetect.c.

OcGetTSCFrequency()

UINT64 OcGetTSCFrequency

(

VOID

)

Obtain CPU's invariant TSC frequency.

Return values

CPU's

TSC frequency or OC_FALLBACK_CPU_FREQUENCY.

Definition at line 762 of file FrequencyDetect.c.