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1 | /**\r |
2 | ACPI table parser\r | |
3 | \r | |
4 | Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.\r | |
5 | 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 | #include <Uefi.h>\r | |
15 | #include <IndustryStandard/Acpi.h>\r | |
16 | #include <Library/UefiLib.h>\r | |
17 | #include "AcpiParser.h"\r | |
18 | #include "AcpiTableParser.h"\r | |
19 | #include "AcpiView.h"\r | |
20 | \r | |
21 | /** A list of registered ACPI table parsers.\r | |
22 | */\r | |
23 | STATIC ACPI_TABLE_PARSER mTableParserList[MAX_ACPI_TABLE_PARSERS];\r | |
24 | \r | |
25 | /** Register the ACPI table Parser\r | |
26 | \r | |
27 | This function registers the ACPI table parser.\r | |
28 | \r | |
29 | @param [in] Signature The ACPI table signature.\r | |
30 | @param [in] ParserProc The ACPI table parser.\r | |
31 | \r | |
32 | @retval EFI_SUCCESS The parser is registered.\r | |
33 | @retval EFI_INVALID_PARAMETER A parameter is invalid.\r | |
34 | @retval EFI_ALREADY_STARTED The parser for the Table\r | |
35 | was already registered.\r | |
36 | @retval EFI_OUT_OF_RESOURCES No space to register the\r | |
37 | parser.\r | |
38 | */\r | |
39 | EFI_STATUS\r | |
40 | EFIAPI\r | |
41 | RegisterParser (\r | |
42 | IN UINT32 Signature,\r | |
43 | IN PARSE_ACPI_TABLE_PROC ParserProc\r | |
44 | )\r | |
45 | {\r | |
46 | UINT32 index;\r | |
47 | \r | |
48 | if ((ParserProc == NULL) || (Signature == ACPI_PARSER_SIGNATURE_NULL)) {\r | |
49 | return EFI_INVALID_PARAMETER;\r | |
50 | }\r | |
51 | \r | |
52 | // Search if a parser is already installed\r | |
53 | for (index = 0;\r | |
54 | index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));\r | |
55 | index++)\r | |
56 | {\r | |
57 | if (Signature == mTableParserList[index].Signature) {\r | |
58 | if (mTableParserList[index].Parser != NULL) {\r | |
59 | return EFI_ALREADY_STARTED;\r | |
60 | }\r | |
61 | }\r | |
62 | }\r | |
63 | \r | |
64 | // Find the first free slot and register the parser\r | |
65 | for (index = 0;\r | |
66 | index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));\r | |
67 | index++)\r | |
68 | {\r | |
69 | if (mTableParserList[index].Signature == ACPI_PARSER_SIGNATURE_NULL) {\r | |
70 | mTableParserList[index].Signature = Signature;\r | |
71 | mTableParserList[index].Parser = ParserProc;\r | |
72 | return EFI_SUCCESS;\r | |
73 | }\r | |
74 | }\r | |
75 | \r | |
76 | // No free slot found\r | |
77 | return EFI_OUT_OF_RESOURCES;\r | |
78 | }\r | |
79 | \r | |
80 | /** Deregister the ACPI table Parser\r | |
81 | \r | |
82 | This function deregisters the ACPI table parser.\r | |
83 | \r | |
84 | @param [in] Signature The ACPI table signature.\r | |
85 | \r | |
86 | @retval EFI_SUCCESS The parser was deregistered.\r | |
87 | @retval EFI_INVALID_PARAMETER A parameter is invalid.\r | |
88 | @retval EFI_NOT_FOUND A registered parser was not found.\r | |
89 | */\r | |
90 | EFI_STATUS\r | |
91 | EFIAPI\r | |
92 | DeregisterParser (\r | |
93 | IN UINT32 Signature\r | |
94 | )\r | |
95 | {\r | |
96 | UINT32 index;\r | |
97 | \r | |
98 | if (Signature == ACPI_PARSER_SIGNATURE_NULL) {\r | |
99 | return EFI_INVALID_PARAMETER;\r | |
100 | }\r | |
101 | \r | |
102 | for (index = 0;\r | |
103 | index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));\r | |
104 | index++)\r | |
105 | {\r | |
106 | if (Signature == mTableParserList[index].Signature) {\r | |
107 | mTableParserList[index].Signature = ACPI_PARSER_SIGNATURE_NULL;\r | |
108 | mTableParserList[index].Parser = NULL;\r | |
109 | return EFI_SUCCESS;\r | |
110 | }\r | |
111 | }\r | |
112 | \r | |
113 | // No matching registered parser found.\r | |
114 | return EFI_NOT_FOUND;\r | |
115 | }\r | |
116 | \r | |
117 | /** Get the ACPI table Parser\r | |
118 | \r | |
119 | This function returns the ACPI table parser proc from the list of\r | |
120 | registered parsers.\r | |
121 | \r | |
122 | @param [in] Signature The ACPI table signature.\r | |
123 | @param [out] ParserProc Pointer to a ACPI table parser proc.\r | |
124 | \r | |
125 | @retval EFI_SUCCESS The parser was returned successfully.\r | |
126 | @retval EFI_INVALID_PARAMETER A parameter is invalid.\r | |
127 | @retval EFI_NOT_FOUND A registered parser was not found.\r | |
128 | */\r | |
129 | EFI_STATUS\r | |
130 | EFIAPI\r | |
131 | GetParser (\r | |
132 | IN UINT32 Signature,\r | |
133 | OUT PARSE_ACPI_TABLE_PROC * ParserProc\r | |
134 | )\r | |
135 | {\r | |
136 | UINT32 index;\r | |
137 | \r | |
138 | if ((ParserProc == NULL) || (Signature == ACPI_PARSER_SIGNATURE_NULL)) {\r | |
139 | return EFI_INVALID_PARAMETER;\r | |
140 | }\r | |
141 | \r | |
142 | for (index = 0;\r | |
143 | index < (sizeof (mTableParserList) / sizeof (mTableParserList[0]));\r | |
144 | index++)\r | |
145 | {\r | |
146 | if (Signature == mTableParserList[index].Signature) {\r | |
147 | *ParserProc = mTableParserList[index].Parser;\r | |
148 | return EFI_SUCCESS;\r | |
149 | }\r | |
150 | }\r | |
151 | \r | |
152 | // No matching registered parser found.\r | |
153 | return EFI_NOT_FOUND;\r | |
154 | }\r | |
155 | \r | |
156 | /** This function processes the ACPI tables.\r | |
157 | This function calls ProcessTableReportOptions() to list the ACPI\r | |
158 | tables, perform binary dump of the tables and determine if the\r | |
159 | ACPI fields should be traced.\r | |
160 | \r | |
161 | This function also invokes the parser for the ACPI tables.\r | |
162 | \r | |
163 | This function also performs a RAW dump of the ACPI table including\r | |
164 | the unknown/unparsed ACPI tables and validates the checksum.\r | |
165 | \r | |
166 | @param [in] Ptr Pointer to the start of the ACPI\r | |
167 | table data buffer.\r | |
168 | */\r | |
169 | VOID\r | |
170 | EFIAPI\r | |
171 | ProcessAcpiTable (\r | |
172 | IN UINT8* Ptr\r | |
173 | )\r | |
174 | {\r | |
175 | EFI_STATUS Status;\r | |
176 | BOOLEAN Trace;\r | |
177 | CONST UINT32* AcpiTableSignature;\r | |
178 | CONST UINT32* AcpiTableLength;\r | |
179 | CONST UINT8* AcpiTableRevision;\r | |
180 | PARSE_ACPI_TABLE_PROC ParserProc;\r | |
181 | \r | |
182 | ParseAcpiHeader (\r | |
183 | Ptr,\r | |
184 | &AcpiTableSignature,\r | |
185 | &AcpiTableLength,\r | |
186 | &AcpiTableRevision\r | |
187 | );\r | |
188 | \r | |
189 | Trace = ProcessTableReportOptions (\r | |
190 | *AcpiTableSignature,\r | |
191 | Ptr,\r | |
192 | *AcpiTableLength\r | |
193 | );\r | |
194 | \r | |
195 | if (Trace) {\r | |
196 | DumpRaw (Ptr, *AcpiTableLength);\r | |
197 | VerifyChecksum (TRUE, Ptr, *AcpiTableLength);\r | |
198 | }\r | |
199 | \r | |
200 | Status = GetParser (*AcpiTableSignature, &ParserProc);\r | |
201 | if (EFI_ERROR (Status)) {\r | |
202 | // No registered parser found, do default handling.\r | |
203 | if (Trace) {\r | |
204 | DumpAcpiHeader (Ptr);\r | |
205 | }\r | |
206 | return;\r | |
207 | }\r | |
208 | \r | |
209 | ParserProc (\r | |
210 | Trace,\r | |
211 | Ptr,\r | |
212 | *AcpiTableLength,\r | |
213 | *AcpiTableRevision\r | |
214 | );\r | |
215 | }\r |