/** @file | |
Reset System Library functions for OVMF | |
Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR> | |
SPDX-License-Identifier: BSD-2-Clause-Patent | |
**/ | |
#include <Base.h> // BIT1 | |
#include <PiDxe.h> | |
#include <Library/BaseLib.h> // CpuDeadLoop() | |
#include <Library/DebugLib.h> // ASSERT() | |
#include <Library/DxeServicesTableLib.h> | |
#include <Library/IoLib.h> // IoWrite8() | |
#include <Library/ResetSystemLib.h> // ResetCold() | |
#include <Library/TimerLib.h> // MicroSecondDelay() | |
#include <Library/UefiRuntimeLib.h> // EfiGoneVirtual() | |
#include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE | |
EFI_STATUS | |
EFIAPI | |
DxeResetSystemLibMicrovmConstructor ( | |
IN EFI_HANDLE ImageHandle, | |
IN EFI_SYSTEM_TABLE *SystemTable | |
) | |
{ | |
UINTN Address = MICROVM_GED_MMIO_BASE; | |
EFI_STATUS Status; | |
EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor; | |
DEBUG ((DEBUG_INFO, "%a: start\n", __func__)); | |
Status = gDS->GetMemorySpaceDescriptor (Address, &Descriptor); | |
if (EFI_ERROR (Status)) { | |
DEBUG ((DEBUG_INFO, "%a: GetMemorySpaceDescriptor failed\n", __func__)); | |
return RETURN_UNSUPPORTED; | |
} | |
Status = gDS->SetMemorySpaceAttributes ( | |
Address, | |
SIZE_4KB, | |
Descriptor.Attributes | EFI_MEMORY_RUNTIME | |
); | |
if (EFI_ERROR (Status)) { | |
DEBUG ((DEBUG_INFO, "%a: SetMemorySpaceAttributes failed\n", __func__)); | |
return RETURN_UNSUPPORTED; | |
} | |
DEBUG ((DEBUG_INFO, "%a: done\n", __func__)); | |
return EFI_SUCCESS; | |
} |