/**
The entry point for TrEE configuration driver.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCCES Convert variable to PCD successfully.
@retval Others Fail to convert variable to PCD.
**/
EFI_STATUS
EFIAPI
TrEEConfigPeimEntryPoint (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
UINTN Size;
EFI_STATUS Status;
EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariablePpi;
TREE_CONFIGURATION TrEEConfiguration;
UINTN Index;
UINT8 TpmDevice;
Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);
ASSERT_EFI_ERROR (Status);
Size = sizeof(TrEEConfiguration);
Status = VariablePpi->GetVariable (
VariablePpi,
TREE_STORAGE_NAME,
&gTrEEConfigFormSetGuid,
NULL,
&Size,
&TrEEConfiguration
);
if (EFI_ERROR (Status)) {
//
// Variable not ready, set default value
//
TrEEConfiguration.TpmDevice = TPM_DEVICE_DEFAULT;
}
//
// Validation
//
if (TrEEConfiguration.TpmDevice > TPM_DEVICE_MAX) {
TrEEConfiguration.TpmDevice = TPM_DEVICE_DEFAULT;
}
//
// Although we have SetupVariable info, we still need detect TPM device manually.
//
DEBUG ((EFI_D_ERROR, "TrEEConfiguration.TpmDevice from Setup: %x\n", TrEEConfiguration.TpmDevice));
if (PcdGetBool (PcdTpmAutoDetection)) {
TpmDevice = DetectTpmDevice (TrEEConfiguration.TpmDevice);
DEBUG ((EFI_D_ERROR, "TrEEConfiguration.TpmDevice final: %x\n", TpmDevice));
TrEEConfiguration.TpmDevice = TpmDevice;
}
//
// Convert variable to PCD.
// This is work-around because there is no gurantee DynamicHiiPcd can return correct value in DXE phase.
// Using DynamicPcd instead.
//
for (Index = 0; Index < sizeof(mTpmInstanceId)/sizeof(mTpmInstanceId[0]); Index++) {
if (TrEEConfiguration.TpmDevice == mTpmInstanceId[Index].TpmDevice) {
Size = sizeof(mTpmInstanceId[Index].TpmInstanceGuid);
PcdSetPtr (PcdTpmInstanceGuid, &Size, &mTpmInstanceId[Index].TpmInstanceGuid);
DEBUG ((EFI_D_ERROR, "TrEEConfiguration.TpmDevice PCD: %g\n", &mTpmInstanceId[Index].TpmInstanceGuid));
break;
}
}
//
// Selection done
//
Status = PeiServicesInstallPpi (&gTpmSelectedPpi);
ASSERT_EFI_ERROR (Status);
return Status;
}
/**
The entry point for TrEE configuration driver.
@param FileHandle Handle of the file being invoked.
@param PeiServices Describes the list of possible PEI Services.
@retval EFI_SUCCES Convert variable to PCD successfully.
@retval Others Fail to convert variable to PCD.
**/
EFI_STATUS
EFIAPI
TrEEConfigPeimEntryPoint (
IN EFI_PEI_FILE_HANDLE FileHandle,
IN CONST EFI_PEI_SERVICES **PeiServices
)
{
UINTN Size;
EFI_STATUS Status;
EFI_STATUS Status2;
EFI_PEI_READ_ONLY_VARIABLE2_PPI *VariablePpi;
TREE_CONFIGURATION TrEEConfiguration;
UINTN Index;
UINT8 TpmDevice;
Status = PeiServicesLocatePpi (&gEfiPeiReadOnlyVariable2PpiGuid, 0, NULL, (VOID **) &VariablePpi);
ASSERT_EFI_ERROR (Status);
Size = sizeof(TrEEConfiguration);
Status = VariablePpi->GetVariable (
VariablePpi,
TREE_STORAGE_NAME,
&gTrEEConfigFormSetGuid,
NULL,
&Size,
&TrEEConfiguration
);
if (EFI_ERROR (Status)) {
//
// Variable not ready, set default value
//
TrEEConfiguration.TpmDevice = TPM_DEVICE_DEFAULT;
}
//
// Validation
//
if ((TrEEConfiguration.TpmDevice > TPM_DEVICE_MAX) || (TrEEConfiguration.TpmDevice < TPM_DEVICE_MIN)) {
TrEEConfiguration.TpmDevice = TPM_DEVICE_DEFAULT;
}
//
// Although we have SetupVariable info, we still need detect TPM device manually.
//
DEBUG ((EFI_D_INFO, "TrEEConfiguration.TpmDevice from Setup: %x\n", TrEEConfiguration.TpmDevice));
if (PcdGetBool (PcdTpmAutoDetection)) {
TpmDevice = DetectTpmDevice (TrEEConfiguration.TpmDevice);
DEBUG ((EFI_D_INFO, "TpmDevice final: %x\n", TpmDevice));
if (TpmDevice != TPM_DEVICE_NULL) {
TrEEConfiguration.TpmDevice = TpmDevice;
}
} else {
TpmDevice = TrEEConfiguration.TpmDevice;
}
//
// Convert variable to PCD.
// This is work-around because there is no gurantee DynamicHiiPcd can return correct value in DXE phase.
// Using DynamicPcd instead.
//
// NOTE: TrEEConfiguration variable contains the desired TpmDevice type,
// while PcdTpmInstanceGuid PCD contains the real detected TpmDevice type
//
for (Index = 0; Index < sizeof(mTpmInstanceId)/sizeof(mTpmInstanceId[0]); Index++) {
if (TpmDevice == mTpmInstanceId[Index].TpmDevice) {
Size = sizeof(mTpmInstanceId[Index].TpmInstanceGuid);
Status = PcdSetPtrS (PcdTpmInstanceGuid, &Size, &mTpmInstanceId[Index].TpmInstanceGuid);
ASSERT_EFI_ERROR (Status);
DEBUG ((EFI_D_INFO, "TpmDevice PCD: %g\n", &mTpmInstanceId[Index].TpmInstanceGuid));
break;
}
}
//
// Selection done
//
Status = PeiServicesInstallPpi (&gTpmSelectedPpi);
ASSERT_EFI_ERROR (Status);
//
// Even if no TPM is selected or detected, we still need intall TpmInitializationDonePpi.
// Because TcgPei or TrEEPei will not run, but we still need a way to notify other driver.
// Other driver can know TPM initialization state by TpmInitializedPpi.
//
if (CompareGuid (PcdGetPtr(PcdTpmInstanceGuid), &gEfiTpmDeviceInstanceNoneGuid)) {
Status2 = PeiServicesInstallPpi (&mTpmInitializationDonePpiList);
ASSERT_EFI_ERROR (Status2);
}
return Status;
}
