1 /*++ @file
2 Reset Architectural Protocol as defined in UEFI/PI under Emulation
3
4 Copyright (c) 2004 - 2009, Intel Corporation. All rights reserved.<BR>
5 Portions copyright (c) 2010 - 2011, Apple Inc. All rights reserved.
6 This program and the accompanying materials
7 are licensed and made available under the terms and conditions of the BSD License
8 which accompanies this distribution. The full text of the license may be found at
9 http://opensource.org/licenses/bsd-license.php
10
11 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
12 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
13
14 **/
15
16 #include <PiDxe.h>
17
18 #include <Library/BaseLib.h>
19 #include <Library/DebugLib.h>
20 #include <Library/UefiLib.h>
21 #include <Library/UefiDriverEntryPoint.h>
22 #include <Library/MemoryAllocationLib.h>
23 #include <Library/UefiBootServicesTableLib.h>
24 #include <Library/EmuThunkLib.h>
25
26 #include <Protocol/Reset.h>
27
28
29 VOID
30 EFIAPI
EmuResetSystem(IN EFI_RESET_TYPE ResetType,IN EFI_STATUS ResetStatus,IN UINTN DataSize,IN VOID * ResetData OPTIONAL)31 EmuResetSystem (
32 IN EFI_RESET_TYPE ResetType,
33 IN EFI_STATUS ResetStatus,
34 IN UINTN DataSize,
35 IN VOID *ResetData OPTIONAL
36 )
37 {
38 EFI_STATUS Status;
39 UINTN HandleCount;
40 EFI_HANDLE *HandleBuffer;
41 UINTN Index;
42
43 //
44 // Disconnect all
45 //
46 Status = gBS->LocateHandleBuffer (
47 AllHandles,
48 NULL,
49 NULL,
50 &HandleCount,
51 &HandleBuffer
52 );
53 if (!EFI_ERROR (Status)) {
54 for (Index = 0; Index < HandleCount; Index++) {
55 Status = gBS->DisconnectController (HandleBuffer[Index], NULL, NULL);
56 }
57
58 gBS->FreePool (HandleBuffer);
59 }
60
61
62 //
63 // Discard ResetType, always return 0 as exit code
64 //
65 gEmuThunk->Exit (0);
66
67 //
68 // Should never go here
69 //
70 ASSERT (FALSE);
71
72 return;
73 }
74
75
76
77 EFI_STATUS
78 EFIAPI
InitializeEmuReset(IN EFI_HANDLE ImageHandle,IN EFI_SYSTEM_TABLE * SystemTable)79 InitializeEmuReset (
80 IN EFI_HANDLE ImageHandle,
81 IN EFI_SYSTEM_TABLE *SystemTable
82 )
83 /*++
84
85 Routine Description:
86
87
88 Arguments:
89
90 ImageHandle of the loaded driver
91 Pointer to the System Table
92
93 Returns:
94
95 Status
96 **/
97 {
98 EFI_STATUS Status;
99 EFI_HANDLE Handle;
100
101 SystemTable->RuntimeServices->ResetSystem = EmuResetSystem;
102
103 Handle = NULL;
104 Status = gBS->InstallMultipleProtocolInterfaces (
105 &Handle,
106 &gEfiResetArchProtocolGuid,
107 NULL,
108 NULL
109 );
110 ASSERT_EFI_ERROR (Status);
111
112 return Status;
113 }
114
115