/**
This function initialize basic context for FRM.
**/
VOID
InitBasicContext (
VOID
)
{
UINT32 RegEax;
mHostContextCommon.CpuNum = GetCpuNumFromAcpi ();
GetPciExpressInfoFromAcpi (&mHostContextCommon.PciExpressBaseAddress, &mHostContextCommon.PciExpressLength);
PcdSet64 (PcdPciExpressBaseAddress, mHostContextCommon.PciExpressBaseAddress);
if (mHostContextCommon.PciExpressBaseAddress == 0) {
CpuDeadLoop ();
}
mHostContextCommon.AcpiTimerIoPortBaseAddress = GetAcpiTimerPort (&mHostContextCommon.AcpiTimerWidth);
PcdSet16 (PcdAcpiTimerIoPortBaseAddress, mHostContextCommon.AcpiTimerIoPortBaseAddress);
PcdSet8 (PcdAcpiTimerWidth, mHostContextCommon.AcpiTimerWidth);
if (mHostContextCommon.AcpiTimerIoPortBaseAddress == 0) {
CpuDeadLoop ();
}
mHostContextCommon.ResetIoPortBaseAddress = GetAcpiResetPort ();
mHostContextCommon.AcpiPmControlIoPortBaseAddress = GetAcpiPmControlPort ();
if (mHostContextCommon.AcpiPmControlIoPortBaseAddress == 0) {
CpuDeadLoop ();
}
mHostContextCommon.HostContextPerCpu = AllocatePages (FRM_SIZE_TO_PAGES(sizeof(FRM_HOST_CONTEXT_PER_CPU)) * mHostContextCommon.CpuNum);
mGuestContextCommon.GuestContextPerCpu = AllocatePages (FRM_SIZE_TO_PAGES(sizeof(FRM_GUEST_CONTEXT_PER_CPU)) * mHostContextCommon.CpuNum);
mHostContextCommon.LowMemoryBase = mCommunicationData.LowMemoryBase;
mHostContextCommon.LowMemorySize = mCommunicationData.LowMemorySize;
mHostContextCommon.LowMemoryBackupBase = (UINT64)(UINTN)AllocatePages (FRM_SIZE_TO_PAGES ((UINTN)mCommunicationData.LowMemorySize));
//
// Save current context
//
mBspIndex = ApicToIndex (ReadLocalApicId ());
mGuestContextCommon.GuestContextPerCpu[mBspIndex].Cr0 = AsmReadCr0 ();
mGuestContextCommon.GuestContextPerCpu[mBspIndex].Cr3 = AsmReadCr3 ();
mGuestContextCommon.GuestContextPerCpu[mBspIndex].Cr4 = AsmReadCr4 ();
AsmReadGdtr (&mGuestContextCommon.GuestContextPerCpu[mBspIndex].Gdtr);
AsmReadIdtr (&mGuestContextCommon.GuestContextPerCpu[mBspIndex].Idtr);
AsmCpuid (CPUID_EXTENDED_INFORMATION, &RegEax, NULL, NULL, NULL);
if (RegEax >= CPUID_EXTENDED_ADDRESS_SIZE) {
AsmCpuid (CPUID_EXTENDED_ADDRESS_SIZE, &RegEax, NULL, NULL, NULL);
mHostContextCommon.PhysicalAddressBits = (UINT8)RegEax;
} else {
mHostContextCommon.PhysicalAddressBits = 36;
}
}
/**
Programs processor registers according to register tables.
This function programs processor registers according to register tables.
**/
VOID
SettingPhase (
VOID
)
{
UINT8 CallbackSignalValue;
UINTN Index;
UINTN ProcessorNumber;
CPU_REGISTER_TABLE *RegisterTable;
BOOLEAN NeedCpuOnlyReset;
//
// Set PcdCpuCallbackSignal to trigger callback function, and reads the value back.
//
CallbackSignalValue = SetAndReadCpuCallbackSignal (CPU_PROCESSOR_SETTING_SIGNAL);
//
// Checks whether the callback function requests to bypass Setting phase.
//
if (CallbackSignalValue == CPU_BYPASS_SIGNAL) {
return;
}
//
// Check if CPU-only reset is needed
//
NeedCpuOnlyReset = FALSE;
for (Index = 0; Index < mCpuConfigConextBuffer.NumberOfProcessors; Index++) {
RegisterTable = &mCpuConfigConextBuffer.RegisterTable[Index];
if (RegisterTable->NumberBeforeReset > 0) {
NeedCpuOnlyReset = TRUE;
break;
}
}
//
// if CPU-only reset is needed, then program corresponding registers, and
// trigger CPU-only reset.
//
if (NeedCpuOnlyReset) {
mSetBeforeCpuOnlyReset = TRUE;
DispatchAPAndWait (
TRUE,
0,
SetProcessorRegister
);
SetProcessorRegister (mCpuConfigConextBuffer.BspNumber);
CpuOnlyResetAndRestore ();
}
//
// Program processors' registers in sequential mode.
//
mSetBeforeCpuOnlyReset = FALSE;
for (Index = 0; Index < mCpuConfigConextBuffer.NumberOfProcessors; Index++) {
ProcessorNumber = mCpuConfigConextBuffer.SettingSequence[Index];
if (ProcessorNumber == mCpuConfigConextBuffer.BspNumber) {
SetProcessorRegister (ProcessorNumber);
} else {
DispatchAPAndWait (
FALSE,
GET_CPU_MISC_DATA (ProcessorNumber, ApicID),
SetProcessorRegister
);
}
RegisterTable = &mCpuConfigConextBuffer.RegisterTable[ProcessorNumber];
RegisterTable->InitialApicId = GetInitialLocalApicId (ProcessorNumber);
}
//
// Set PcdCpuCallbackSignal to trigger callback function
//
PcdSet8 (PcdCpuCallbackSignal, CPU_PROCESSOR_SETTING_END_SIGNAL);
//
// From now on, SetProcessorRegister() will be called only by SimpleApProcWrapper()
// and ApProcWrapper to restore register settings after INIT signal, so switch
// this flag from FALSE to TRUE.
//
mRestoreSettingAfterInit = TRUE;
}
/**
This routine check both SetupVariable and real TPM device, and return final TpmDevice configuration.
@param SetupTpmDevice TpmDevice configuration in setup driver
@return TpmDevice configuration
**/
UINT8
DetectTpmDevice (
IN UINT8 SetupTpmDevice
)
{
EFI_STATUS Status;
EFI_BOOT_MODE BootMode;
TREE_DEVICE_DETECTION TrEEDeviceDetection;
EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariablePpi;
UINTN Size;
Status = PeiServicesGetBootMode (&BootMode);
ASSERT_EFI_ERROR (Status);
//
// In S3, we rely on normal boot Detection, because we save to ReadOnly Variable in normal boot.
//
if (BootMode == BOOT_ON_S3_RESUME) {
DEBUG ((EFI_D_ERROR, "DetectTpmDevice: S3 mode\n"));
Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);
ASSERT_EFI_ERROR (Status);
Size = sizeof(TREE_DEVICE_DETECTION);
ZeroMem (&TrEEDeviceDetection, sizeof(TrEEDeviceDetection));
Status = VariablePpi->GetVariable (
VariablePpi,
TREE_DEVICE_DETECTION_NAME,
&gTrEEConfigFormSetGuid,
NULL,
&Size,
&TrEEDeviceDetection
);
if (!EFI_ERROR (Status) &&
(TrEEDeviceDetection.TpmDeviceDetected >= TPM_DEVICE_MIN) &&
(TrEEDeviceDetection.TpmDeviceDetected <= TPM_DEVICE_MAX)) {
DEBUG ((EFI_D_ERROR, "TpmDevice from DeviceDetection: %x\n", TrEEDeviceDetection.TpmDeviceDetected));
return TrEEDeviceDetection.TpmDeviceDetected;
}
}
DEBUG ((EFI_D_ERROR, "DetectTpmDevice:\n"));
if (!IsDtpmPresent ()) {
// dTPM not available
return TPM_DEVICE_NULL;
}
// dTPM available and not disabled by setup
// We need check if it is TPM1.2 or TPM2.0
// So try TPM1.2 command at first
Status = Tpm12RequestUseTpm ();
if (EFI_ERROR (Status)) {
return TPM_DEVICE_2_0_DTPM;
}
if (BootMode == BOOT_ON_S3_RESUME) {
Status = Tpm12Startup (TPM_ST_STATE);
} else {
Status = Tpm12Startup (TPM_ST_CLEAR);
}
if (EFI_ERROR (Status)) {
return TPM_DEVICE_2_0_DTPM;
}
// NO initialization needed again.
PcdSet8 (PcdTpmInitializationPolicy, 0);
return TPM_DEVICE_1_2;
}
