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1/** @file\r
2Library instance for ExtendedHiiLib.\r
3 \r
4This library instance implements the common HII routines which is\r
5related to HII but reference data structures that are not defined in \r
6UEFI specification, for example HII_VENDOR_DEVICE_PATH.\r
7\r
8\r
9Copyright (c) 2006 - 2008, Intel Corporation. <BR>\r
10All rights reserved. This program and the accompanying materials\r
11are licensed and made available under the terms and conditions of the BSD License\r
12which accompanies this distribution. The full text of the license may be found at\r
13http://opensource.org/licenses/bsd-license.php\r
14\r
15THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
16WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
17\r
18**/\r
19\r
20\r
21#include <Uefi.h>\r
22#include <Protocol/DevicePath.h>\r
23#include <Library/DebugLib.h>\r
24#include <Library/MemoryAllocationLib.h>\r
25#include <Library/UefiBootServicesTableLib.h>\r
26#include <Library/DevicePathLib.h>\r
27#include <Guid\MdeModuleHii.h>\r
28\r
29\r
30//\r
31// Hii vendor device path template\r
32//\r
33GLOBAL_REMOVE_IF_UNREFERENCED CONST HII_VENDOR_DEVICE_PATH mHiiVendorDevicePathTemplate = {\r
34 {\r
35 {\r
36 {\r
37 HARDWARE_DEVICE_PATH,\r
38 HW_VENDOR_DP,\r
39 {\r
40 (UINT8) (sizeof (HII_VENDOR_DEVICE_PATH_NODE)),\r
41 (UINT8) ((sizeof (HII_VENDOR_DEVICE_PATH_NODE)) >> 8)\r
42 }\r
43 },\r
44 EFI_IFR_TIANO_GUID\r
45 },\r
46 0,\r
47 0\r
48 },\r
49 {\r
50 END_DEVICE_PATH_TYPE,\r
51 END_ENTIRE_DEVICE_PATH_SUBTYPE,\r
52 { \r
53 END_DEVICE_PATH_LENGTH\r
54 }\r
55 }\r
56};\r
57\r
58/**\r
59 The HII driver handle passed in for HiiDatabase.NewPackageList() requires\r
60 that there should be DevicePath Protocol installed on it.\r
61 This routine create a virtual Driver Handle by installing a vendor device\r
62 path on it, so as to use it to invoke HiiDatabase.NewPackageList().\r
63 The Device Path created is a Vendor Device Path specific to Intel's implemenation\r
64 and it is defined as HII_VENDOR_DEVICE_PATH_NODE.\r
65 \r
66\r
67 @param DriverHandle Handle to be returned\r
68\r
69 @retval EFI_SUCCESS Handle destroy success.\r
70 @retval EFI_OUT_OF_RESOURCES Not enough memory.\r
71\r
72**/\r
73EFI_STATUS\r
74EFIAPI\r
75HiiLibCreateHiiDriverHandle (\r
76 OUT EFI_HANDLE *DriverHandle\r
77 )\r
78{\r
79 EFI_STATUS Status;\r
80 HII_VENDOR_DEVICE_PATH_NODE *VendorDevicePath;\r
81\r
82 VendorDevicePath = AllocateCopyPool (sizeof (HII_VENDOR_DEVICE_PATH), &mHiiVendorDevicePathTemplate);\r
83 if (VendorDevicePath == NULL) {\r
84 return EFI_OUT_OF_RESOURCES;\r
85 }\r
86\r
87 //\r
88 // Use memory address as unique ID to distinguish from different device paths\r
89 //\r
90 VendorDevicePath->UniqueId = (UINT64) ((UINTN) VendorDevicePath);\r
91\r
92 *DriverHandle = NULL;\r
93 Status = gBS->InstallMultipleProtocolInterfaces (\r
94 DriverHandle,\r
95 &gEfiDevicePathProtocolGuid,\r
96 VendorDevicePath,\r
97 NULL\r
98 );\r
99 if (EFI_ERROR (Status)) {\r
100 return Status;\r
101 }\r
102\r
103 return EFI_SUCCESS;\r
104}\r
105\r
106\r
107/**\r
108 Destroy the Driver Handle created by CreateHiiDriverHandle().\r
109\r
110 If no Device Path protocol is installed on the DriverHandle, then ASSERT.\r
111 If this Device Path protocol is failed to be uninstalled, then ASSERT.\r
112\r
113 @param DriverHandle Handle returned by CreateHiiDriverHandle()\r
114\r
115\r
116**/\r
117VOID\r
118EFIAPI\r
119HiiLibDestroyHiiDriverHandle (\r
120 IN EFI_HANDLE DriverHandle\r
121 )\r
122{\r
123 EFI_STATUS Status;\r
124 EFI_DEVICE_PATH_PROTOCOL *DevicePath;\r
125\r
126 Status = gBS->HandleProtocol (\r
127 DriverHandle,\r
128 &gEfiDevicePathProtocolGuid,\r
129 (VOID **) &DevicePath\r
130 );\r
131 ASSERT_EFI_ERROR (Status);\r
132\r
133 Status = gBS->UninstallProtocolInterface (\r
134 DriverHandle,\r
135 &gEfiDevicePathProtocolGuid,\r
136 DevicePath\r
137 );\r
138 ASSERT_EFI_ERROR (Status);\r
139\r
140 FreePool (DevicePath);\r
141\r
142}\r
143\r
144\r
145\r