1 /** @file
2 ACPI Table Protocol Driver
3
4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>
5 This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
9
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
12
13 **/
14
15 //
16 // Includes
17 //
18 #include "AcpiTable.h"
19
20 //
21 // Handle to install ACPI Table Protocol
22 //
23 EFI_HANDLE mHandle = NULL;
24 GLOBAL_REMOVE_IF_UNREFERENCED EFI_ACPI_TABLE_INSTANCE *mPrivateData = NULL;
25
26 /**
27 Entry point of the ACPI table driver.
28 Creates and initializes an instance of the ACPI Table
29 Protocol and installs it on a new handle.
30
31 @param ImageHandle A handle for the image that is initializing this driver.
32 @param SystemTable A pointer to the EFI system table.
33
34 @return EFI_SUCCESS Driver initialized successfully.
35 @return EFI_LOAD_ERROR Failed to Initialize or has been loaded.
36 @return EFI_OUT_OF_RESOURCES Could not allocate needed resources.
37
38 **/
39 EFI_STATUS
40 EFIAPI
InitializeAcpiTableDxe(IN EFI_HANDLE ImageHandle,IN EFI_SYSTEM_TABLE * SystemTable)41 InitializeAcpiTableDxe (
42 IN EFI_HANDLE ImageHandle,
43 IN EFI_SYSTEM_TABLE *SystemTable
44 )
45 {
46 EFI_STATUS Status;
47 EFI_ACPI_TABLE_INSTANCE *PrivateData;
48
49 //
50 // Initialize our protocol
51 //
52 PrivateData = AllocateZeroPool (sizeof (EFI_ACPI_TABLE_INSTANCE));
53 ASSERT (PrivateData);
54 PrivateData->Signature = EFI_ACPI_TABLE_SIGNATURE;
55
56 //
57 // Call all constructors per produced protocols
58 //
59 Status = AcpiTableAcpiTableConstructor (PrivateData);
60 if (EFI_ERROR (Status)) {
61 gBS->FreePool (PrivateData);
62 return EFI_LOAD_ERROR;
63 }
64
65 //
66 // Install ACPI Table protocol
67 //
68 if (FeaturePcdGet (PcdInstallAcpiSdtProtocol)) {
69 mPrivateData = PrivateData;
70 Status = gBS->InstallMultipleProtocolInterfaces (
71 &mHandle,
72 &gEfiAcpiTableProtocolGuid,
73 &PrivateData->AcpiTableProtocol,
74 &gEfiAcpiSdtProtocolGuid,
75 &mPrivateData->AcpiSdtProtocol,
76 NULL
77 );
78 } else {
79 Status = gBS->InstallMultipleProtocolInterfaces (
80 &mHandle,
81 &gEfiAcpiTableProtocolGuid,
82 &PrivateData->AcpiTableProtocol,
83 NULL
84 );
85 }
86 ASSERT_EFI_ERROR (Status);
87
88 return Status;
89 }
90
91