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1 | /** @file\r |
2 | Variable worker functions.\r |
3 | \r |
4 | Copyright (c) 2006, Intel Corporation<BR>\r |
5 | All rights reserved. This program and the accompanying materials\r |
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 | //\r |
15 | // The package level header files this module uses\r |
16 | //\r |
17 | #include <PiPei.h>\r |
18 | \r |
19 | //\r |
20 | // The protocols, PPI and GUID defintions for this module\r |
21 | //\r |
22 | #include <Ppi/ReadOnlyVariable.h>\r |
23 | //\r |
24 | // The Library classes this module consumes\r |
25 | //\r |
26 | #include <Library/DebugLib.h>\r |
27 | #include <Library/PeimEntryPoint.h>\r |
28 | #include <Library/HobLib.h>\r |
29 | #include <Library/PcdLib.h>\r |
30 | #include <Library/BaseMemoryLib.h>\r |
31 | \r |
32 | #include <Variable.h>\r |
33 | \r |
34 | \r |
35 | /**\r |
36 | Get one variable by the index count.\r |
37 | \r |
38 | @param IndexTable The pointer to variable index table.\r |
39 | @param Count The index count of variable in index table.\r |
40 | \r |
41 | @return The pointer to variable header indexed by count.\r |
42 | \r |
43 | **/\r |
44 | VARIABLE_HEADER *\r |
45 | GetVariableByIndex (\r |
46 | IN VARIABLE_INDEX_TABLE *IndexTable,\r |
47 | IN UINT32 Count\r |
48 | )\r |
49 | {\r |
50 | return (VARIABLE_HEADER *) (UINTN) ((((UINT32)IndexTable->Index[Count]) << 2) + ((UINT32)(UINTN)IndexTable->StartPtr & 0xFFFC0000) );\r |
51 | }\r |
52 | \r |
53 | /**\r |
54 | Record Variable in VariableIndex HOB.\r |
55 | \r |
56 | Record Variable in VariableIndex HOB and update the length of variable index table.\r |
57 | \r |
58 | @param IndexTable The pointer to variable index table.\r |
59 | @param Variable The pointer to the variable that will be recorded.\r |
60 | \r |
61 | @retval VOID\r |
62 | \r |
63 | **/\r |
64 | VOID\r |
65 | VariableIndexTableUpdate (\r |
66 | IN OUT VARIABLE_INDEX_TABLE *IndexTable,\r |
67 | IN VARIABLE_HEADER *Variable\r |
68 | )\r |
69 | {\r |
70 | IndexTable->Index[IndexTable->Length++] = (UINT16) (((UINT32)(UINTN) Variable) >> 2);\r |
71 | \r |
72 | return;\r |
73 | }\r |
74 | \r |