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878ddf1f 1/*++\r
2\r
3Copyright (c) 2006, Intel Corporation \r
4All rights reserved. This program and the accompanying materials \r
5are licensed and made available under the terms and conditions of the BSD License \r
6which accompanies this distribution. The full text of the license may be found at \r
7http://opensource.org/licenses/bsd-license.php \r
8 \r
9THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r
10WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r
11\r
12Module Name:\r
13\r
14 MiscOnboardDeviceFunction.c\r
15 \r
16Abstract: \r
17\r
18 Onboard device information boot time changes.\r
19 Misc. subclass type 8.\r
20 SMBIOS type 10.\r
21\r
22--*/\r
23\r
24#include "MiscSubclassDriver.h"\r
25#include "winntio/winntio.h"\r
26#include "winntthunk/winntthunk.h"\r
27\r
28#pragma pack(1)\r
29\r
30typedef struct _VENDOR_DEVICE {\r
31 EFI_DEVICE_PATH_PROTOCOL Platform;\r
32 EFI_GUID PlatformGuid;\r
33 EFI_DEVICE_PATH_PROTOCOL Device;\r
34 EFI_GUID DeviceGuid;\r
35 UINT8 DeviceData[4];\r
36 EFI_DEVICE_PATH_PROTOCOL End;\r
37\r
38} VENDOR_DEVICE;\r
39#pragma pack()\r
40\r
41MISC_SUBCLASS_TABLE_FUNCTION (\r
42 MiscOnboardDeviceVideo\r
43 )\r
44/*++\r
45Description:\r
46\r
47 This function makes boot time changes to the contents of the\r
48 MiscOnboardDevice structure.\r
49\r
50Parameters:\r
51\r
52 RecordType\r
53 Type of record to be processed from the Data Table.\r
54 mMiscSubclassDataTable[].RecordType\r
55\r
56 RecordLen\r
57 Size of static RecordData from the Data Table.\r
58 mMiscSubclassDataTable[].RecordLen\r
59\r
60 RecordData\r
61 Pointer to copy of RecordData from the Data Table. Changes made\r
62 to this copy will be written to the Data Hub but will not alter\r
63 the contents of the static Data Table.\r
64\r
65 LogRecordData\r
66 Set *LogRecordData to TRUE to log RecordData to Data Hub.\r
67 Set *LogRecordData to FALSE when there is no more data to log.\r
68\r
69Returns:\r
70\r
71 EFI_SUCCESS\r
72 All parameters were valid and *RecordData and *LogRecordData have\r
73 been set.\r
74\r
75 EFI_UNSUPPORTED\r
76 Unexpected RecordType value.\r
77\r
78 EFI_INVALID_PARAMETER\r
79 One of the following parameter conditions was true:\r
80 RecordLen was zero.\r
81 RecordData was NULL.\r
82 LogRecordData was NULL.\r
83--*/\r
84{\r
85 STATIC VENDOR_DEVICE mVideoDevicePath = {\r
86 {\r
87 HARDWARE_DEVICE_PATH,\r
88 HW_VENDOR_DP,\r
89 0x14\r
90 },\r
91 EFI_WIN_NT_THUNK_PROTOCOL_GUID,\r
92 {\r
93 HARDWARE_DEVICE_PATH,\r
94 HW_VENDOR_DP,\r
95 0x18\r
96 },\r
97 EFI_WIN_NT_UGA_GUID,\r
98 0,\r
99 0,\r
100 0,\r
101 0,\r
102 END\r
103 };\r
104\r
105 STATIC BOOLEAN Done = FALSE;\r
106\r
107 //\r
108 // First check for invalid parameters.\r
109 //\r
110 if (RecordLen == 0 || RecordData == NULL || LogRecordData == NULL) {\r
111 return EFI_INVALID_PARAMETER;\r
112 }\r
113 //\r
114 // Then check for unsupported RecordType.\r
115 //\r
116 if (RecordType != EFI_MISC_ONBOARD_DEVICE_DATA_RECORD_NUMBER) {\r
117 return EFI_UNSUPPORTED;\r
118 }\r
119 //\r
120 // Is this the first time through this function?\r
121 //\r
122 if (!Done) {\r
123 //\r
124 // Yes, this is the first time. Inspect/Change the contents of the\r
125 // RecordData structure.\r
126 //\r
127 //\r
128 // Any time changes?\r
129 //\r
130 // %%TBD\r
131 //\r
132 // Set Done flag to TRUE for next pass through this function.\r
133 // Set *LogRecordData to TRUE so data will get logged to Data Hub.\r
134 //\r
135 switch (((EFI_MISC_ONBOARD_DEVICE_DATA *) RecordData)->OnBoardDeviceDescription) {\r
136 case STR_MISC_ONBOARD_DEVICE_VIDEO_DESCRIPTION:\r
137 {\r
138 CopyMem (\r
139 &((EFI_MISC_ONBOARD_DEVICE_DATA *) RecordData)->OnBoardDevicePath,\r
140 &mVideoDevicePath,\r
141 GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *) &mVideoDevicePath)\r
142 );\r
143 *RecordLen = *RecordLen - sizeof (EFI_DEVICE_PATH_PROTOCOL) + GetDevicePathSize ((EFI_DEVICE_PATH_PROTOCOL *) &mVideoDevicePath);\r
144 }\r
145 break;\r
146 }\r
147\r
148 Done = TRUE;\r
149 *LogRecordData = TRUE;\r
150 } else {\r
151 //\r
152 // No, this is the second time. Reset the state of the Done flag\r
153 // to FALSE and tell the data logger that there is no more data\r
154 // to be logged for this record type. If any memory allocations\r
155 // were made by earlier passes, they must be released now.\r
156 //\r
157 Done = FALSE;\r
158 *LogRecordData = FALSE;\r
159 }\r
160\r
161 return EFI_SUCCESS;\r
162}\r
163\r
164/* eof - MiscOnboardDeviceFunction.c */\r