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1d3e89f3 GH |
1 | /** @file\r |
2 | Reset System Library functions for OVMF\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>\r | |
5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
6 | \r | |
7 | **/\r | |
8 | \r | |
9 | #include <Base.h> // BIT1\r | |
10 | #include <PiDxe.h>\r | |
11 | \r | |
12 | #include <Library/BaseLib.h> // CpuDeadLoop()\r | |
13 | #include <Library/DebugLib.h> // ASSERT()\r | |
14 | #include <Library/DxeServicesTableLib.h>\r | |
15 | #include <Library/IoLib.h> // IoWrite8()\r | |
16 | #include <Library/ResetSystemLib.h> // ResetCold()\r | |
17 | #include <Library/TimerLib.h> // MicroSecondDelay()\r | |
18 | #include <Library/UefiRuntimeLib.h> // EfiGoneVirtual()\r | |
19 | #include <OvmfPlatforms.h> // PIIX4_PMBA_VALUE\r | |
20 | \r | |
21 | EFI_STATUS\r | |
22 | EFIAPI\r | |
23 | DxeResetSystemLibMicrovmConstructor (\r | |
24 | IN EFI_HANDLE ImageHandle,\r | |
25 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
26 | )\r | |
27 | {\r | |
28 | UINTN Address = MICROVM_GED_MMIO_BASE;\r | |
29 | EFI_STATUS Status;\r | |
30 | EFI_GCD_MEMORY_SPACE_DESCRIPTOR Descriptor;\r | |
31 | \r | |
32 | DEBUG ((DEBUG_INFO, "%a: start\n", __FUNCTION__));\r | |
33 | \r | |
34 | Status = gDS->GetMemorySpaceDescriptor (Address, &Descriptor);\r | |
35 | if (EFI_ERROR (Status)) {\r | |
36 | DEBUG ((DEBUG_INFO, "%a: GetMemorySpaceDescriptor failed\n", __FUNCTION__));\r | |
37 | return RETURN_UNSUPPORTED;\r | |
38 | }\r | |
39 | \r | |
ac0a286f MK |
40 | Status = gDS->SetMemorySpaceAttributes (\r |
41 | Address,\r | |
42 | SIZE_4KB,\r | |
43 | Descriptor.Attributes | EFI_MEMORY_RUNTIME\r | |
44 | );\r | |
1d3e89f3 GH |
45 | if (EFI_ERROR (Status)) {\r |
46 | DEBUG ((DEBUG_INFO, "%a: SetMemorySpaceAttributes failed\n", __FUNCTION__));\r | |
47 | return RETURN_UNSUPPORTED;\r | |
48 | }\r | |
49 | \r | |
50 | DEBUG ((DEBUG_INFO, "%a: done\n", __FUNCTION__));\r | |
51 | return EFI_SUCCESS;\r | |
52 | }\r |