/**
This function processes the results of changes in configuration.
@param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param[in] Action Specifies the type of action taken by the browser.
@param[in] QuestionId A unique value which is sent to the original
exporting driver so that it can identify the type
of data to expect.
@param[in] Type The type of value for the question.
@param[in] Value A pointer to the data being sent to the original
exporting driver.
@param[out] ActionRequest On return, points to the action requested by the
callback function.
@retval EFI_SUCCESS The callback successfully handled the action.
@retval EFI_OUT_OF_RESOURCES Not enough storage is available to hold the
variable and its data.
@retval EFI_DEVICE_ERROR The variable could not be saved.
@retval EFI_UNSUPPORTED The specified Action is not supported by the
callback.
**/
EFI_STATUS
EFIAPI
TrEECallback (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN EFI_BROWSER_ACTION Action,
IN EFI_QUESTION_ID QuestionId,
IN UINT8 Type,
IN EFI_IFR_TYPE_VALUE *Value,
OUT EFI_BROWSER_ACTION_REQUEST *ActionRequest
)
{
if ((This == NULL) || (Value == NULL) || (ActionRequest == NULL)) {
return EFI_INVALID_PARAMETER;
}
if (Action == EFI_BROWSER_ACTION_CHANGED) {
if (QuestionId == KEY_TPM_DEVICE) {
return EFI_SUCCESS;
}
if (QuestionId == KEY_TPM2_OPERATION) {
return SaveTrEEPpRequest (Value->u8);
}
}
return EFI_UNSUPPORTED;
}
/**
This function processes the results of changes in configuration.
@param[in] This Points to the EFI_HII_CONFIG_ACCESS_PROTOCOL.
@param[in] Configuration A null-terminated Unicode string in <ConfigResp>
format.
@param[out] Progress A pointer to a string filled in with the offset of
the most recent '&' before the first failing
name/value pair (or the beginning of the string if
the failure is in the first name/value pair) or
the terminating NULL if all was successful.
@retval EFI_SUCCESS The Results is processed successfully.
@retval EFI_INVALID_PARAMETER Configuration is NULL.
@retval EFI_NOT_FOUND Routing data doesn't match any storage in this
driver.
**/
EFI_STATUS
EFIAPI
TrEERouteConfig (
IN CONST EFI_HII_CONFIG_ACCESS_PROTOCOL *This,
IN CONST EFI_STRING Configuration,
OUT EFI_STRING *Progress
)
{
EFI_STATUS Status;
UINTN BufferSize;
TREE_CONFIGURATION TrEEConfiguration;
if (Configuration == NULL || Progress == NULL) {
return EFI_INVALID_PARAMETER;
}
*Progress = Configuration;
if (!HiiIsConfigHdrMatch (Configuration, &gTrEEConfigFormSetGuid, TREE_STORAGE_NAME)) {
return EFI_NOT_FOUND;
}
BufferSize = sizeof (TrEEConfiguration);
Status = gRT->GetVariable (
TREE_STORAGE_NAME,
&gTrEEConfigFormSetGuid,
NULL,
&BufferSize,
&TrEEConfiguration
);
ASSERT_EFI_ERROR (Status);
//
// Convert <ConfigResp> to buffer data by helper function ConfigToBlock()
//
BufferSize = sizeof (TREE_CONFIGURATION);
Status = gHiiConfigRouting->ConfigToBlock (
gHiiConfigRouting,
Configuration,
(UINT8 *) &TrEEConfiguration,
&BufferSize,
Progress
);
if (EFI_ERROR (Status)) {
return Status;
}
//
// Save to variable so platform driver can get it.
//
Status = gRT->SetVariable (
TREE_STORAGE_NAME,
&gTrEEConfigFormSetGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
sizeof(TrEEConfiguration),
&TrEEConfiguration
);
SaveTrEEPpRequest (TrEEConfiguration.Tpm2Operation
);
return Status;
}