mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
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142 lines
3.2 KiB
C
Executable File
142 lines
3.2 KiB
C
Executable File
/** @file
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Copyright (C) 2020, vit9696. All rights reserved.
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All rights reserved.
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef OC_CPU_INTERNALS_H
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#define OC_CPU_INTERNALS_H
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//
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// Tolerance within which we consider two frequency values to be roughly
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// equivalent.
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//
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#define OC_CPU_FREQUENCY_TOLERANCE 50000000LL // 50 Mhz
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/**
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Internal CPU synchronisation structure.
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**/
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typedef struct {
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UINT64 Tsc;
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volatile UINT32 CurrentCount;
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UINT32 APThreadCount;
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} OC_CPU_TSC_SYNC;
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/**
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Returns microcode revision for Intel CPUs.
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@retval microcode revision.
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**/
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UINT32
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EFIAPI
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AsmReadIntelMicrocodeRevision (
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VOID
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);
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/**
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Detect Apple CPU major type.
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@param[in] BrandString CPU Brand String from CPUID.
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@retval Apple CPU major type.
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**/
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UINT8
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InternalDetectAppleMajorType (
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IN CONST CHAR8 *BrandString
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);
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/**
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Detect Apple CPU type.
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@param[in] Model CPU model from CPUID.
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@param[in] Stepping CPU stepping from CPUID.
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@param[in] AppleMajorType Apple CPU major type.
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@retval Apple CPU type.
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**/
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UINT16
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InternalDetectAppleProcessorType (
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IN UINT8 Model,
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IN UINT8 Stepping,
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IN UINT8 AppleMajorType
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);
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/**
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Obtain ACPI PM timer address for this BSP.
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@param[out] Type Address source type, optional.
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@retval ACPI PM timer address or 0.
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**/
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UINTN
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InternalGetPmTimerAddr (
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OUT CONST CHAR8 **Type OPTIONAL
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);
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/**
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Calculate the TSC frequency via PM timer
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@param[in] Recalculate Do not re-use previously cached information.
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@retval The calculated TSC frequency.
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**/
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UINT64
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InternalCalculateTSCFromPMTimer (
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IN BOOLEAN Recalculate
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);
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/**
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Calculate the ART frequency and derieve the CPU frequency for Intel CPUs
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@param[out] CPUFrequency The derieved CPU frequency.
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@param[out] TscAdjustPtr Adjustment value for TSC, optional.
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@param[in] Recalculate Do not re-use previously cached information.
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@retval The calculated ART frequency.
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**/
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UINT64
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InternalCalculateARTFrequencyIntel (
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OUT UINT64 *CPUFrequency,
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OUT UINT64 *TscAdjustPtr OPTIONAL,
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IN BOOLEAN Recalculate
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);
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/**
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Calculate the CPU frequency via VMT for hypervisors
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@param[out] FSBFrequency FSB frequency, optional.
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@param[out] UnderHypervisor Hypervisor status, optional.
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@retval CPU frequency or 0.
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**/
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UINT64
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InternalCalculateVMTFrequency (
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OUT UINT64 *FSBFrequency OPTIONAL,
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OUT BOOLEAN *UnderHypervisor OPTIONAL
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);
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/**
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Atomically increment 32-bit integer.
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This is required to be locally implemented as we cannot use SynchronizationLib,
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which depends on TimerLib, and our TimerLib depends on this library.
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@param[in] Value Pointer to 32-bit integer to increment.
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@retval value after incrementing.
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**/
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UINT32
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EFIAPI
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AsmIncrementUint32 (
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IN volatile UINT32 *Value
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);
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#endif // OC_CPU_INTERNALS_H
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