/** @file | |
Null instance of MM Unblock Page Library. | |
This library provides an interface to request non-MMRAM pages to be mapped/unblocked | |
from inside MM environment. | |
For MM modules that need to access regions outside of MMRAMs, the agents that set up | |
these regions are responsible for invoking this API in order for these memory areas | |
to be accessed from inside MM. | |
Copyright (c) Microsoft Corporation. | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <Base.h> | |
/** | |
This API provides a way to unblock certain data pages to be accessible inside MM environment. | |
@param UnblockAddress The address of buffer caller requests to unblock, the address | |
has to be page aligned. | |
@param NumberOfPages The number of pages requested to be unblocked from MM | |
environment. | |
@retval RETURN_SUCCESS The request goes through successfully. | |
@retval RETURN_NOT_AVAILABLE_YET The requested functionality is not produced yet. | |
@retval RETURN_UNSUPPORTED The requested functionality is not supported on current platform. | |
@retval RETURN_SECURITY_VIOLATION The requested address failed to pass security check for | |
unblocking. | |
@retval RETURN_INVALID_PARAMETER Input address either NULL pointer or not page aligned. | |
@retval RETURN_ACCESS_DENIED The request is rejected due to system has passed certain boot | |
phase. | |
**/ | |
RETURN_STATUS | |
EFIAPI | |
MmUnblockMemoryRequest ( | |
IN PHYSICAL_ADDRESS UnblockAddress, | |
IN UINT64 NumberOfPages | |
) | |
{ | |
return RETURN_UNSUPPORTED; | |
} |