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ba82cb67 | 1 | /**@file\r |
2 | EFI_PEI_STALL implementation for NT32 simulation environment.\r | |
3 | \r | |
f66a43b2 | 4 | Copyright (c) 2009 - 2013, Intel Corporation. All rights reserved.<BR>\r |
8f2a5f80 | 5 | This program and the accompanying materials \r |
ba82cb67 | 6 | are licensed and made available under the terms and conditions of the BSD License \r |
7 | which accompanies this distribution. The full text of the license may be found at \r | |
8 | http://opensource.org/licenses/bsd-license.php \r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
12 | \r | |
13 | **/\r | |
14 | #include "WinNtPeim.h"\r | |
15 | \r | |
16 | #include <Ppi/NtThunk.h>\r | |
17 | #include <Ppi/Stall.h>\r | |
18 | #include <Library/DebugLib.h>\r | |
19 | \r | |
20 | EFI_STATUS\r | |
21 | EFIAPI \r | |
22 | Stall (\r | |
23 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
24 | IN CONST EFI_PEI_STALL_PPI *This,\r | |
25 | IN UINTN Microseconds\r | |
26 | );\r | |
27 | \r | |
28 | EFI_PEI_STALL_PPI mStallPpi = {1000, Stall};\r | |
29 | \r | |
30 | EFI_PEI_PPI_DESCRIPTOR mPpiListStall[1] = {\r | |
31 | {\r | |
32 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
33 | &gEfiPeiStallPpiGuid,\r | |
34 | &mStallPpi\r | |
35 | }\r | |
36 | };\r | |
37 | \r | |
38 | \r | |
39 | /**\r | |
40 | PEIM's entry point.\r | |
41 | \r | |
42 | This routine installs the simulation instance of EFI_PEI_STALL_PPI based\r | |
43 | on Win API Sleep().\r | |
44 | \r | |
45 | @param FileHandle Handle of the file being invoked. \r | |
46 | @param PeiServices Describes the list of possible PEI Services.\r | |
47 | \r | |
48 | @retval EFI_SUCCESS The PEIM executed normally.\r | |
49 | @retval !EFI_SUCCESS The PEIM failed to execute normally.\r | |
50 | **/\r | |
51 | EFI_STATUS\r | |
52 | EFIAPI\r | |
53 | InitializeStall (\r | |
54 | IN EFI_PEI_FILE_HANDLE FileHandle,\r | |
55 | IN CONST EFI_PEI_SERVICES **PeiServices\r | |
56 | )\r | |
57 | {\r | |
58 | EFI_STATUS Status;\r | |
59 | Status = (*PeiServices)->InstallPpi (PeiServices, &mPpiListStall[0]);\r | |
60 | ASSERT_EFI_ERROR (Status);\r | |
61 | \r | |
62 | return Status;\r | |
63 | }\r | |
64 | \r | |
65 | /**\r | |
66 | The Stall() function provides a blocking stall for at least the number \r | |
67 | of microseconds stipulated in the final argument of the API.\r | |
68 | \r | |
69 | @param PeiServices An indirect pointer to the PEI Services Table\r | |
70 | published by the PEI Foundation.\r | |
71 | @param This Pointer to the local data for the interface.\r | |
72 | @param Microseconds Number of microseconds for which to stall.\r | |
73 | \r | |
74 | @retval EFI_SUCCESS The service provided at least the required delay.\r | |
75 | \r | |
76 | **/\r | |
77 | EFI_STATUS\r | |
78 | EFIAPI \r | |
79 | Stall (\r | |
80 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
81 | IN CONST EFI_PEI_STALL_PPI *This,\r | |
82 | IN UINTN Microseconds\r | |
83 | )\r | |
84 | {\r | |
85 | EFI_STATUS Status;\r | |
86 | PEI_NT_THUNK_PPI *PeiNtService;\r | |
87 | EFI_WIN_NT_THUNK_PROTOCOL *NtThunk;\r | |
88 | \r | |
89 | Status = (**PeiServices).LocatePpi (\r | |
90 | (const EFI_PEI_SERVICES **)PeiServices,\r | |
91 | &gPeiNtThunkPpiGuid,\r | |
92 | 0, \r | |
93 | NULL,\r | |
94 | (VOID**)&PeiNtService\r | |
95 | );\r | |
96 | ASSERT_EFI_ERROR (Status);\r | |
97 | \r | |
98 | //\r | |
99 | // Calculate the time to sleep. Win API smallest unit to sleep is 1 millisec\r | |
100 | // so micro second units need be divided by 1000 to convert to ms\r | |
101 | //\r | |
102 | NtThunk = (EFI_WIN_NT_THUNK_PROTOCOL*) PeiNtService->NtThunk();\r | |
f66a43b2 | 103 | NtThunk->Sleep ((DWORD)((Microseconds + 999) / 1000)); \r |
ba82cb67 | 104 | \r |
105 | return EFI_SUCCESS;\r | |
106 | }\r |