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audk/EmulatorPkg/CpuRuntimeDxe/Cpu.c

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/*++ @file
Emu driver to produce CPU Architectural Protocol.
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
Portions copyright (c) 2011 - 2012, Apple Inc. All rights reserved.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "CpuDriver.h"
UINT64 mTimerPeriod;
CPU_ARCH_PROTOCOL_PRIVATE mCpuTemplate = {
CPU_ARCH_PROT_PRIVATE_SIGNATURE,
NULL,
{
EmuFlushCpuDataCache,
EmuEnableInterrupt,
EmuDisableInterrupt,
EmuGetInterruptState,
EmuInit,
EmuRegisterInterruptHandler,
EmuGetTimerValue,
EmuSetMemoryAttributes,
0,
4
},
{
{
CpuMemoryServiceRead,
CpuMemoryServiceWrite
},
{
CpuIoServiceRead,
CpuIoServiceWrite
}
},
TRUE
};
#define EFI_CPU_DATA_MAXIMUM_LENGTH 0x100
SMBIOS_TABLE_TYPE4 mCpuSmbiosType4 = {
{ EFI_SMBIOS_TYPE_PROCESSOR_INFORMATION, sizeof (SMBIOS_TABLE_TYPE4), 0},
1, // Socket String
ProcessorOther, // ProcessorType; ///< The enumeration value from PROCESSOR_TYPE_DATA.
ProcessorFamilyOther, // ProcessorFamily; ///< The enumeration value from PROCESSOR_FAMILY_DATA.
2, // ProcessorManufacture String;
{ // ProcessorId;
{ // PROCESSOR_SIGNATURE
0, // ProcessorSteppingId:4;
0, // ProcessorModel: 4;
0, // ProcessorFamily: 4;
0, // ProcessorType: 2;
0, // ProcessorReserved1: 2;
0, // ProcessorXModel: 4;
0, // ProcessorXFamily: 8;
0, // ProcessorReserved2: 4;
},
{ // PROCESSOR_FEATURE_FLAGS
0, // ProcessorFpu :1;
0, // ProcessorVme :1;
0, // ProcessorDe :1;
0, // ProcessorPse :1;
0, // ProcessorTsc :1;
0, // ProcessorMsr :1;
0, // ProcessorPae :1;
0, // ProcessorMce :1;
0, // ProcessorCx8 :1;
0, // ProcessorApic :1;
0, // ProcessorReserved1 :1;
0, // ProcessorSep :1;
0, // ProcessorMtrr :1;
0, // ProcessorPge :1;
0, // ProcessorMca :1;
0, // ProcessorCmov :1;
0, // ProcessorPat :1;
0, // ProcessorPse36 :1;
0, // ProcessorPsn :1;
0, // ProcessorClfsh :1;
0, // ProcessorReserved2 :1;
0, // ProcessorDs :1;
0, // ProcessorAcpi :1;
0, // ProcessorMmx :1;
0, // ProcessorFxsr :1;
0, // ProcessorSse :1;
0, // ProcessorSse2 :1;
0, // ProcessorSs :1;
0, // ProcessorReserved3 :1;
0, // ProcessorTm :1;
0, // ProcessorReserved4 :2;
}
},
3, // ProcessorVersion String;
{ // Voltage;
1, // ProcessorVoltageCapability5V :1;
1, // ProcessorVoltageCapability3_3V :1;
1, // ProcessorVoltageCapability2_9V :1;
0, // ProcessorVoltageCapabilityReserved :1; ///< Bit 3, must be zero.
0, // ProcessorVoltageReserved :3; ///< Bits 4-6, must be zero.
0 // ProcessorVoltageIndicateLegacy :1;
},
0, // ExternalClock;
0, // MaxSpeed;
0, // CurrentSpeed;
0x41, // Status;
ProcessorUpgradeOther, // ProcessorUpgrade; ///< The enumeration value from PROCESSOR_UPGRADE.
0, // L1CacheHandle;
0, // L2CacheHandle;
0, // L3CacheHandle;
4, // SerialNumber;
5, // AssetTag;
6, // PartNumber;
0, // CoreCount;
0, // EnabledCoreCount;
0, // ThreadCount;
0, // ProcessorCharacteristics;
0, // ProcessorFamily2;
};
CHAR8 *mCpuSmbiosType4Strings[] = {
"Socket",
"http://www.tianocore.org/edk2/",
"Emulated Processor",
"1.0",
"1.0",
"1.0",
NULL
};
/**
Create SMBIOS record.
Converts a fixed SMBIOS structure and an array of pointers to strings into
an SMBIOS record where the strings are cat'ed on the end of the fixed record
and terminated via a double NULL and add to SMBIOS table.
SMBIOS_TABLE_TYPE32 gSmbiosType12 = {
{ EFI_SMBIOS_TYPE_SYSTEM_CONFIGURATION_OPTIONS, sizeof (SMBIOS_TABLE_TYPE12), 0 },
1 // StringCount
};
CHAR8 *gSmbiosType12Strings[] = {
"Not Found",
NULL
};
...
LogSmbiosData (
(EFI_SMBIOS_TABLE_HEADER*)&gSmbiosType12,
gSmbiosType12Strings
);
@param Template Fixed SMBIOS structure, required.
@param StringArray Array of strings to convert to an SMBIOS string pack.
NULL is OK.
**/
EFI_STATUS
LogSmbiosData (
IN EFI_SMBIOS_TABLE_HEADER *Template,
IN CHAR8 **StringPack
)
{
EFI_STATUS Status;
EFI_SMBIOS_PROTOCOL *Smbios;
EFI_SMBIOS_HANDLE SmbiosHandle;
EFI_SMBIOS_TABLE_HEADER *Record;
UINTN Index;
UINTN StringSize;
UINTN Size;
CHAR8 *Str;
//
// Locate Smbios protocol.
//
Status = gBS->LocateProtocol (&gEfiSmbiosProtocolGuid, NULL, (VOID **)&Smbios);
if (EFI_ERROR (Status)) {
return Status;
}
// Calculate the size of the fixed record and optional string pack
Size = Template->Length;
if (StringPack == NULL) {
// At least a double null is required
Size += 2;
} else {
for (Index = 0; StringPack[Index] != NULL; Index++) {
StringSize = AsciiStrSize (StringPack[Index]);
Size += StringSize;
}
if (StringPack[0] == NULL) {
// At least a double null is required
Size += 1;
}
// Don't forget the terminating double null
Size += 1;
}
// Copy over Template
Record = (EFI_SMBIOS_TABLE_HEADER *)AllocateZeroPool (Size);
if (Record == NULL) {
return EFI_OUT_OF_RESOURCES;
}
CopyMem (Record, Template, Template->Length);
// Append string pack
Str = ((CHAR8 *)Record) + Record->Length;
for (Index = 0; StringPack[Index] != NULL; Index++) {
StringSize = AsciiStrSize (StringPack[Index]);
CopyMem (Str, StringPack[Index], StringSize);
Str += StringSize;
}
*Str = 0;
SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
Status = Smbios->Add (
Smbios,
gImageHandle,
&SmbiosHandle,
Record
);
ASSERT_EFI_ERROR (Status);
FreePool (Record);
return Status;
}
VOID
CpuUpdateSmbios (
IN UINTN MaxCpus
)
{
mCpuSmbiosType4.CoreCount = (UINT8) MaxCpus;
mCpuSmbiosType4.EnabledCoreCount = (UINT8) MaxCpus;
mCpuSmbiosType4.ThreadCount = (UINT8) MaxCpus;
//
// The value of 1234 is fake value for CPU frequency
//
mCpuSmbiosType4.CurrentSpeed = 1234;
LogSmbiosData ((EFI_SMBIOS_TABLE_HEADER *)&mCpuSmbiosType4, mCpuSmbiosType4Strings);
}
//
// Service routines for the driver
//
EFI_STATUS
EFIAPI
EmuFlushCpuDataCache (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS Start,
IN UINT64 Length,
IN EFI_CPU_FLUSH_TYPE FlushType
)
{
if (FlushType == EfiCpuFlushTypeWriteBackInvalidate) {
//
// Only WB flush is supported. We actually need do nothing on Emu emulator
// environment. Classify this to follow EFI spec
//
return EFI_SUCCESS;
}
//
// Other flush types are not supported by Emu emulator
//
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
EmuEnableInterrupt (
IN EFI_CPU_ARCH_PROTOCOL *This
)
{
CPU_ARCH_PROTOCOL_PRIVATE *Private;
Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);
Private->InterruptState = TRUE;
gEmuThunk->EnableInterrupt ();
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
EmuDisableInterrupt (
IN EFI_CPU_ARCH_PROTOCOL *This
)
{
CPU_ARCH_PROTOCOL_PRIVATE *Private;
Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);
Private->InterruptState = FALSE;
gEmuThunk->DisableInterrupt ();
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
EmuGetInterruptState (
IN EFI_CPU_ARCH_PROTOCOL *This,
OUT BOOLEAN *State
)
{
CPU_ARCH_PROTOCOL_PRIVATE *Private;
if (State == NULL) {
return EFI_INVALID_PARAMETER;
}
Private = CPU_ARCH_PROTOCOL_PRIVATE_DATA_FROM_THIS (This);
*State = Private->InterruptState;
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
EmuInit (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_CPU_INIT_TYPE InitType
)
{
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
EmuRegisterInterruptHandler (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_EXCEPTION_TYPE InterruptType,
IN EFI_CPU_INTERRUPT_HANDLER InterruptHandler
)
{
//
// Do parameter checking for EFI spec conformance
//
if (InterruptType < 0 || InterruptType > 0xff) {
return EFI_UNSUPPORTED;
}
//
// Do nothing for Emu emulation
//
return EFI_UNSUPPORTED;
}
EFI_STATUS
EFIAPI
EmuGetTimerValue (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN UINT32 TimerIndex,
OUT UINT64 *TimerValue,
OUT UINT64 *TimerPeriod OPTIONAL
)
{
if (TimerValue == NULL) {
return EFI_INVALID_PARAMETER;
}
if (TimerIndex != 0) {
return EFI_INVALID_PARAMETER;
}
*TimerValue = gEmuThunk->QueryPerformanceCounter ();
if (TimerPeriod != NULL) {
*TimerPeriod = mTimerPeriod;
}
return EFI_SUCCESS;
}
EFI_STATUS
EFIAPI
EmuSetMemoryAttributes (
IN EFI_CPU_ARCH_PROTOCOL *This,
IN EFI_PHYSICAL_ADDRESS BaseAddress,
IN UINT64 Length,
IN UINT64 Attributes
)
{
//
// Check for invalid parameter for Spec conformance
//
if (Length == 0) {
return EFI_INVALID_PARAMETER;
}
//
// Do nothing for Nt32 emulation
//
return EFI_UNSUPPORTED;
}
/**
Callback function for idle events.
@param Event Event whose notification function is being invoked.
@param Context The pointer to the notification function's context,
which is implementation-dependent.
**/
VOID
EFIAPI
IdleLoopEventCallback (
IN EFI_EVENT Event,
IN VOID *Context
)
{
gEmuThunk->CpuSleep ();
}
EFI_STATUS
EFIAPI
InitializeCpu (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
UINT64 Frequency;
EFI_EVENT IdleLoopEvent;
UINTN MaxCpu;
//
// Retrieve the frequency of the performance counter in Hz.
//
Frequency = gEmuThunk->QueryPerformanceFrequency ();
//
// Convert frequency in Hz to a clock period in femtoseconds.
//
mTimerPeriod = DivU64x64Remainder (1000000000000000ULL, Frequency, NULL);
CpuMpServicesInit (&MaxCpu);
CpuUpdateSmbios (MaxCpu);
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
IdleLoopEventCallback,
NULL,
&gIdleLoopEventGuid,
&IdleLoopEvent
);
ASSERT_EFI_ERROR (Status);
Status = gBS->InstallMultipleProtocolInterfaces (
&mCpuTemplate.Handle,
&gEfiCpuArchProtocolGuid, &mCpuTemplate.Cpu,
&gEfiCpuIo2ProtocolGuid, &mCpuTemplate.CpuIo,
NULL
);
ASSERT_EFI_ERROR (Status);
return Status;
}
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