0c18794e |
1 | /** @file\r |
2 | The TPM definition block in ACPI table for physical presence \r |
3 | and MemoryClear.\r |
4 | \r |
5 | Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>\r |
6 | This program and the accompanying materials \r |
7 | are licensed and made available under the terms and conditions of the BSD License \r |
8 | which accompanies this distribution. The full text of the license may be found at \r |
9 | http://opensource.org/licenses/bsd-license.php\r |
10 | \r |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
13 | \r |
14 | **/\r |
15 | \r |
16 | DefinitionBlock (\r |
17 | "Tpm.aml",\r |
18 | "SSDT",\r |
19 | 1,\r |
20 | "Intel_",\r |
21 | "TcgTable",\r |
22 | 0x1000\r |
23 | )\r |
24 | {\r |
25 | Scope (\_SB)\r |
26 | {\r |
27 | Device (TPM)\r |
28 | {\r |
29 | //\r |
30 | // Define _HID, "PNP0C31" is defined in\r |
31 | // "Secure Startup-FVE and TPM Admin BIOS and Platform Requirements"\r |
32 | //\r |
33 | Name (_HID, EISAID ("PNP0C31"))\r |
34 | \r |
35 | //\r |
36 | // Readable name of this device, don't know if this way is correct yet\r |
37 | //\r |
38 | Name (_STR, Unicode ("TPM 1.2 Device"))\r |
39 | \r |
40 | //\r |
41 | // Return the resource consumed by TPM device\r |
42 | //\r |
43 | Name (_CRS, ResourceTemplate () {\r |
44 | Memory32Fixed (ReadOnly, 0xfed40000, 0x5000)\r |
45 | })\r |
46 | \r |
47 | //\r |
48 | // Operational region for Smi port access\r |
49 | //\r |
50 | OperationRegion (SMIP, SystemIO, 0xB2, 1)\r |
51 | Field (SMIP, ByteAcc, NoLock, Preserve)\r |
52 | { \r |
53 | IOB2, 8\r |
54 | }\r |
55 | \r |
56 | //\r |
57 | // Operational region for TPM access\r |
58 | //\r |
59 | OperationRegion (TPMR, SystemMemory, 0xfed40000, 0x5000)\r |
60 | Field (TPMR, AnyAcc, NoLock, Preserve)\r |
61 | {\r |
62 | ACC0, 8,\r |
63 | }\r |
64 | \r |
65 | //\r |
66 | // Operational region for TPM support, TPM Physical Presence and TPM Memory Clear\r |
67 | // Region Offset to be fixed at runtime\r |
68 | //\r |
69 | OperationRegion (TNVS, SystemMemory, 0xFFFF0000, 0x1E)\r |
70 | Field (TNVS, AnyAcc, NoLock, Preserve)\r |
71 | {\r |
72 | PPIN, 8, // Software SMI for Physical Presence Interface\r |
73 | PPIP, 32, // Used for save physical presence paramter\r |
74 | PPRP, 32, // Physical Presence request operation response\r |
75 | PPRQ, 32, // Physical Presence request operation\r |
76 | LPPR, 32, // Last Physical Presence request operation\r |
77 | FRET, 32, // Physical Presence function return code\r |
78 | MCIN, 8, // Software SMI for Memory Clear Interface\r |
79 | MCIP, 32, // Used for save the Mor paramter\r |
80 | MORD, 32 // Memory Overwrite Request Data\r |
81 | }\r |
82 | \r |
83 | Method (PTS, 1, Serialized)\r |
84 | { \r |
85 | //\r |
86 | // Detect Sx state for MOR, only S4, S5 need to handle\r |
87 | //\r |
88 | If (LAnd (LLess (Arg0, 6), LGreater (Arg0, 3)))\r |
89 | { \r |
90 | //\r |
91 | // Bit4 -- DisableAutoDetect. 0 -- Firmware MAY autodetect.\r |
92 | //\r |
93 | If (LNot (And (MORD, 0x10)))\r |
94 | {\r |
95 | //\r |
96 | // Triggle the SMI through ACPI _PTS method.\r |
97 | //\r |
98 | Store (0x02, MCIP)\r |
99 | \r |
100 | //\r |
101 | // Triggle the SMI interrupt\r |
102 | //\r |
103 | Store (MCIN, IOB2)\r |
104 | }\r |
105 | }\r |
106 | Return (0)\r |
107 | } \r |
108 | \r |
109 | Method (_STA, 0)\r |
110 | {\r |
111 | if (LEqual (ACC0, 0xff))\r |
112 | {\r |
113 | Return (0)\r |
114 | }\r |
115 | Return (0x0f)\r |
116 | }\r |
117 | \r |
118 | //\r |
119 | // TCG Hardware Information\r |
120 | //\r |
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121 | Method (HINF, 3, Serialized, 0, {BuffObj, PkgObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj\r |
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122 | {\r |
123 | //\r |
124 | // Switch by function index\r |
125 | //\r |
126 | Switch (ToInteger(Arg1))\r |
127 | {\r |
128 | Case (0)\r |
129 | {\r |
130 | //\r |
131 | // Standard query\r |
132 | //\r |
133 | Return (Buffer () {0x03})\r |
134 | }\r |
135 | Case (1)\r |
136 | {\r |
137 | //\r |
138 | // Return failure if no TPM present\r |
139 | //\r |
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140 | Name(TPMV, Package () {0x01, Package () {0x1, 0x20}})\r |
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141 | if (LEqual (_STA (), 0x00))\r |
142 | {\r |
143 | Return (Package () {0x00})\r |
144 | }\r |
145 | \r |
146 | //\r |
147 | // Return TPM version\r |
148 | //\r |
149 | Return (TPMV)\r |
150 | }\r |
151 | Default {BreakPoint}\r |
152 | }\r |
153 | Return (Buffer () {0})\r |
154 | }\r |
155 | \r |
156 | Name(TPM2, Package (0x02){\r |
157 | Zero, \r |
158 | Zero\r |
159 | })\r |
160 | \r |
161 | Name(TPM3, Package (0x03){\r |
162 | Zero, \r |
163 | Zero,\r |
164 | Zero\r |
165 | })\r |
166 | \r |
167 | //\r |
168 | // TCG Physical Presence Interface\r |
169 | //\r |
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170 | Method (TPPI, 3, Serialized, 0, {BuffObj, PkgObj, IntObj, StrObj}, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj\r |
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171 | { \r |
172 | //\r |
173 | // Switch by function index\r |
174 | //\r |
175 | Switch (ToInteger(Arg1))\r |
176 | {\r |
177 | Case (0)\r |
178 | {\r |
179 | //\r |
180 | // Standard query, supports function 1-8\r |
181 | //\r |
182 | Return (Buffer () {0xFF, 0x01})\r |
183 | }\r |
184 | Case (1)\r |
185 | {\r |
186 | //\r |
187 | // a) Get Physical Presence Interface Version\r |
188 | //\r |
189 | Return ("1.2")\r |
190 | }\r |
191 | Case (2)\r |
192 | {\r |
193 | //\r |
194 | // b) Submit TPM Operation Request to Pre-OS Environment\r |
195 | //\r |
196 | \r |
197 | Store (DerefOf (Index (Arg2, 0x00)), PPRQ)\r |
198 | Store (0x02, PPIP)\r |
199 | \r |
200 | //\r |
201 | // Triggle the SMI interrupt\r |
202 | //\r |
203 | Store (PPIN, IOB2)\r |
204 | Return (FRET)\r |
205 | \r |
206 | \r |
207 | }\r |
208 | Case (3)\r |
209 | {\r |
210 | //\r |
211 | // c) Get Pending TPM Operation Requested By the OS\r |
212 | //\r |
213 | \r |
214 | Store (PPRQ, Index (TPM2, 0x01))\r |
215 | Return (TPM2)\r |
216 | }\r |
217 | Case (4)\r |
218 | {\r |
219 | //\r |
220 | // d) Get Platform-Specific Action to Transition to Pre-OS Environment\r |
221 | //\r |
222 | Return (2)\r |
223 | }\r |
224 | Case (5)\r |
225 | {\r |
226 | //\r |
227 | // e) Return TPM Operation Response to OS Environment\r |
228 | //\r |
229 | Store (0x05, PPIP)\r |
230 | \r |
231 | //\r |
232 | // Triggle the SMI interrupt\r |
233 | //\r |
234 | Store (PPIN, IOB2)\r |
235 | \r |
236 | Store (LPPR, Index (TPM3, 0x01))\r |
237 | Store (PPRP, Index (TPM3, 0x02))\r |
238 | \r |
239 | Return (TPM3)\r |
240 | }\r |
241 | Case (6)\r |
242 | {\r |
243 | \r |
244 | //\r |
245 | // f) Submit preferred user language (Not implemented)\r |
246 | //\r |
247 | \r |
248 | Return (3)\r |
249 | \r |
250 | }\r |
251 | Case (7)\r |
252 | {\r |
253 | //\r |
254 | // g) Submit TPM Operation Request to Pre-OS Environment 2\r |
255 | //\r |
256 | Store (7, PPIP)\r |
257 | Store (DerefOf (Index (Arg2, 0x00)), PPRQ)\r |
258 | \r |
259 | //\r |
260 | // Triggle the SMI interrupt \r |
261 | //\r |
262 | Store (PPIN, IOB2) \r |
263 | Return (FRET)\r |
264 | }\r |
265 | Case (8)\r |
266 | {\r |
267 | //\r |
268 | // e) Get User Confirmation Status for Operation\r |
269 | //\r |
270 | Store (8, PPIP)\r |
271 | Store (DerefOf (Index (Arg2, 0x00)), PPRQ)\r |
272 | \r |
273 | //\r |
274 | // Triggle the SMI interrupt\r |
275 | //\r |
276 | Store (PPIN, IOB2)\r |
277 | \r |
278 | Return (FRET)\r |
279 | }\r |
280 | \r |
281 | Default {BreakPoint}\r |
282 | }\r |
283 | Return (1)\r |
284 | }\r |
285 | \r |
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286 | Method (TMCI, 3, Serialized, 0, IntObj, {UnknownObj, UnknownObj, UnknownObj}) // IntObj, IntObj, PkgObj\r |
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287 | {\r |
288 | //\r |
289 | // Switch by function index\r |
290 | //\r |
291 | Switch (ToInteger (Arg1))\r |
292 | {\r |
293 | Case (0)\r |
294 | {\r |
295 | //\r |
296 | // Standard query, supports function 1-1\r |
297 | //\r |
298 | Return (Buffer () {0x03})\r |
299 | }\r |
300 | Case (1)\r |
301 | {\r |
302 | //\r |
303 | // Save the Operation Value of the Request to MORD (reserved memory)\r |
304 | //\r |
305 | Store (DerefOf (Index (Arg2, 0x00)), MORD)\r |
306 | \r |
307 | //\r |
308 | // Triggle the SMI through ACPI _DSM method.\r |
309 | //\r |
310 | Store (0x01, MCIP)\r |
311 | \r |
312 | //\r |
313 | // Triggle the SMI interrupt\r |
314 | //\r |
315 | Store (MCIN, IOB2)\r |
316 | Return (0)\r |
317 | }\r |
318 | Default {BreakPoint}\r |
319 | }\r |
320 | Return (1) \r |
321 | }\r |
322 | \r |
323 | Method (_DSM, 4, Serialized, 0, UnknownObj, {BuffObj, IntObj, IntObj, PkgObj})\r |
324 | {\r |
325 | \r |
326 | //\r |
327 | // TCG Hardware Information\r |
328 | //\r |
329 | If(LEqual(Arg0, ToUUID ("cf8e16a5-c1e8-4e25-b712-4f54a96702c8")))\r |
330 | {\r |
331 | Return (HINF (Arg1, Arg2, Arg3))\r |
332 | }\r |
333 | \r |
334 | //\r |
335 | // TCG Physical Presence Interface\r |
336 | //\r |
337 | If(LEqual(Arg0, ToUUID ("3dddfaa6-361b-4eb4-a424-8d10089d1653")))\r |
338 | {\r |
339 | Return (TPPI (Arg1, Arg2, Arg3))\r |
340 | }\r |
341 | \r |
342 | //\r |
343 | // TCG Memory Clear Interface\r |
344 | //\r |
345 | If(LEqual(Arg0, ToUUID ("376054ed-cc13-4675-901c-4756d7f2d45d")))\r |
346 | {\r |
347 | Return (TMCI (Arg1, Arg2, Arg3))\r |
348 | }\r |
349 | \r |
350 | Return (Buffer () {0})\r |
351 | }\r |
352 | }\r |
353 | }\r |
354 | }\r |