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c8ec22a2 JY |
1 | /** @file\r |
2 | \r | |
d5fb1edf | 3 | Copyright (c) 2014 - 2015, Intel Corporation. All rights reserved.<BR>\r |
16a16ea6 | 4 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
c8ec22a2 JY |
5 | \r |
6 | **/\r | |
7 | \r | |
8 | #include "SecFsp.h"\r | |
9 | \r | |
c8ec22a2 JY |
10 | /**\r |
11 | \r | |
12 | Calculate the FSP IDT gate descriptor.\r | |
13 | \r | |
14 | @param[in] IdtEntryTemplate IDT gate descriptor template.\r | |
15 | \r | |
16 | @return FSP specific IDT gate descriptor.\r | |
17 | \r | |
18 | **/\r | |
19 | UINT64\r | |
20 | FspGetExceptionHandler(\r | |
21 | IN UINT64 IdtEntryTemplate\r | |
22 | )\r | |
23 | {\r | |
24 | UINT32 Entry;\r | |
25 | UINT64 ExceptionHandler;\r | |
26 | IA32_IDT_GATE_DESCRIPTOR *IdtGateDescriptor;\r | |
27 | FSP_INFO_HEADER *FspInfoHeader;\r | |
28 | \r | |
16b7e82c | 29 | FspInfoHeader = (FSP_INFO_HEADER *)AsmGetFspInfoHeader();\r |
c8ec22a2 JY |
30 | ExceptionHandler = IdtEntryTemplate;\r |
31 | IdtGateDescriptor = (IA32_IDT_GATE_DESCRIPTOR *)&ExceptionHandler;\r | |
32 | Entry = (IdtGateDescriptor->Bits.OffsetHigh << 16) | IdtGateDescriptor->Bits.OffsetLow;\r | |
33 | Entry = FspInfoHeader->ImageBase + FspInfoHeader->ImageSize - (~Entry + 1);\r | |
34 | IdtGateDescriptor->Bits.OffsetHigh = (UINT16)(Entry >> 16);\r | |
35 | IdtGateDescriptor->Bits.OffsetLow = (UINT16)Entry;\r | |
36 | \r | |
37 | return ExceptionHandler;\r | |
38 | }\r | |
39 | \r | |
40 | /**\r | |
41 | This function gets the FSP UPD region offset in flash.\r | |
42 | \r | |
43 | @return the offset of the UPD region.\r | |
44 | \r | |
45 | **/\r | |
46 | UINT32\r | |
47 | EFIAPI\r | |
48 | GetFspUpdRegionOffset (\r | |
49 | VOID\r | |
50 | )\r | |
51 | {\r | |
52 | FSP_GLOBAL_DATA *FspData;\r | |
53 | UINT32 *Offset;\r | |
54 | \r | |
55 | FspData = GetFspGlobalDataPointer ();\r | |
56 | \r | |
57 | //\r | |
58 | // It is required to put PcdUpdRegionOffset at offset 0x000C\r | |
59 | // for all FSPs.\r | |
60 | // gPlatformFspPkgTokenSpaceGuid.PcdUpdRegionOffset | 0x000C | 0x12345678\r | |
61 | //\r | |
62 | Offset = (UINT32 *)(FspData->FspInfoHeader->ImageBase + \\r | |
63 | FspData->FspInfoHeader->CfgRegionOffset + 0x0C);\r | |
64 | \r | |
65 | return *Offset;\r | |
66 | }\r | |
67 | \r | |
68 | /**\r | |
69 | This interface fills platform specific data.\r | |
70 | \r | |
71 | @param[in,out] FspData Pointer to the FSP global data.\r | |
72 | \r | |
73 | **/\r | |
74 | VOID\r | |
75 | EFIAPI\r | |
76 | SecGetPlatformData (\r | |
77 | IN OUT FSP_GLOBAL_DATA *FspData\r | |
78 | )\r | |
79 | {\r | |
80 | FSP_PLAT_DATA *FspPlatformData;\r | |
81 | UINT32 TopOfCar;\r | |
82 | UINT32 *StackPtr;\r | |
83 | UINT32 DwordSize;\r | |
84 | \r | |
85 | FspPlatformData = &FspData->PlatformData;\r | |
86 | \r | |
87 | //\r | |
88 | // The entries of platform information, together with the number of them,\r | |
89 | // reside in the bottom of stack, left untouched by normal stack operation.\r | |
90 | //\r | |
91 | TopOfCar = PcdGet32 (PcdTemporaryRamBase) + PcdGet32 (PcdTemporaryRamSize);\r | |
92 | \r | |
93 | FspPlatformData->DataPtr = NULL;\r | |
9da59186 JY |
94 | FspPlatformData->MicrocodeRegionBase = 0;\r |
95 | FspPlatformData->MicrocodeRegionSize = 0;\r | |
c8ec22a2 | 96 | FspPlatformData->CodeRegionBase = 0;\r |
9da59186 | 97 | FspPlatformData->CodeRegionSize = 0;\r |
c8ec22a2 JY |
98 | \r |
99 | //\r | |
100 | // Pointer to the size field\r | |
101 | //\r | |
102 | StackPtr = (UINT32 *)(TopOfCar - sizeof(UINT32));\r | |
103 | \r | |
104 | while (*StackPtr != 0) {\r | |
105 | if (*(StackPtr - 1) == FSP_MCUD_SIGNATURE) {\r | |
106 | //\r | |
107 | // This following data was pushed onto stack after TempRamInit API\r | |
108 | //\r | |
109 | DwordSize = 4;\r | |
110 | StackPtr = StackPtr - 1 - DwordSize;\r | |
9da59186 | 111 | CopyMem (&(FspPlatformData->MicrocodeRegionBase), StackPtr, (DwordSize << 2));\r |
c8ec22a2 JY |
112 | StackPtr--;\r |
113 | } else if (*(StackPtr - 1) == FSP_PER0_SIGNATURE) {\r | |
114 | //\r | |
115 | // This is the performance data for InitTempMemory API entry/exit\r | |
116 | //\r | |
117 | DwordSize = 4;\r | |
118 | StackPtr = StackPtr - 1 - DwordSize;\r | |
119 | CopyMem (FspData->PerfData, StackPtr, (DwordSize << 2));\r | |
120 | ((UINT8 *)(&FspData->PerfData[0]))[7] = FSP_PERF_ID_API_TMPRAMINIT_ENTRY;\r | |
121 | ((UINT8 *)(&FspData->PerfData[1]))[7] = FSP_PERF_ID_API_TMPRAMINIT_EXIT;\r | |
122 | StackPtr--;\r | |
123 | } else {\r | |
124 | StackPtr -= (*StackPtr);\r | |
125 | }\r | |
126 | }\r | |
127 | }\r | |
128 | \r | |
129 | /**\r | |
130 | \r | |
131 | Initialize the FSP global data region.\r | |
132 | It needs to be done as soon as possible after the stack is setup.\r | |
133 | \r | |
134 | @param[in,out] PeiFspData Pointer of the FSP global data.\r | |
9da59186 | 135 | @param[in] BootLoaderStack BootLoader stack.\r |
d5fb1edf | 136 | @param[in] ApiIdx The index of the FSP API.\r |
c8ec22a2 JY |
137 | \r |
138 | **/\r | |
139 | VOID\r | |
140 | FspGlobalDataInit (\r | |
141 | IN OUT FSP_GLOBAL_DATA *PeiFspData,\r | |
9da59186 | 142 | IN UINT32 BootLoaderStack,\r |
d5fb1edf | 143 | IN UINT8 ApiIdx\r |
c8ec22a2 JY |
144 | )\r |
145 | {\r | |
146 | VOID *UpdDataRgnPtr;\r | |
147 | FSP_INIT_PARAMS *FspInitParams;\r | |
148 | CHAR8 ImageId[9];\r | |
149 | UINTN Idx;\r | |
150 | \r | |
151 | //\r | |
152 | // Init PCIE_BAR with value and set global FSP data pointer.\r | |
153 | // PciExpress Base should have been programmed by platform already.\r | |
154 | //\r | |
155 | SetFspGlobalDataPointer (PeiFspData);\r | |
156 | ZeroMem ((VOID *)PeiFspData, sizeof(FSP_GLOBAL_DATA));\r | |
157 | \r | |
158 | PeiFspData->Signature = FSP_GLOBAL_DATA_SIGNATURE;\r | |
9da59186 | 159 | PeiFspData->CoreStack = BootLoaderStack;\r |
c8ec22a2 JY |
160 | PeiFspData->PerfIdx = 2;\r |
161 | \r | |
162 | SetFspMeasurePoint (FSP_PERF_ID_API_FSPINIT_ENTRY);\r | |
163 | \r | |
164 | //\r | |
165 | // Get FSP Header offset\r | |
166 | // It may have multiple FVs, so look into the last one for FSP header\r | |
167 | //\r | |
16b7e82c | 168 | PeiFspData->FspInfoHeader = (FSP_INFO_HEADER *)AsmGetFspInfoHeader();\r |
c8ec22a2 JY |
169 | SecGetPlatformData (PeiFspData);\r |
170 | \r | |
d5fb1edf JY |
171 | //\r |
172 | // Set API calling mode\r | |
173 | //\r | |
174 | SetFspApiCallingMode (ApiIdx == 1 ? 0 : 1);\r | |
175 | \r | |
c8ec22a2 JY |
176 | //\r |
177 | // Initialize UPD pointer.\r | |
178 | //\r | |
179 | FspInitParams = (FSP_INIT_PARAMS *)GetFspApiParameter ();\r | |
180 | UpdDataRgnPtr = ((FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr)->UpdDataRgnPtr;\r | |
181 | if (UpdDataRgnPtr == NULL) {\r | |
182 | UpdDataRgnPtr = (VOID *)(PeiFspData->FspInfoHeader->ImageBase + GetFspUpdRegionOffset());\r | |
183 | }\r | |
184 | SetFspUpdDataPointer (UpdDataRgnPtr);\r | |
185 | \r | |
186 | //\r | |
187 | // Initialize serial port\r | |
188 | // It might have been done in ProcessLibraryConstructorList(), however,\r | |
189 | // the FSP global data is not initialized at that time. So do it again\r | |
190 | // for safe.\r | |
191 | //\r | |
192 | SerialPortInitialize ();\r | |
193 | \r | |
194 | //\r | |
195 | // Ensure the golbal data pointer is valid\r | |
196 | //\r | |
197 | ASSERT (GetFspGlobalDataPointer () == PeiFspData);\r | |
198 | \r | |
199 | for (Idx = 0; Idx < 8; Idx++) {\r | |
200 | ImageId[Idx] = PeiFspData->FspInfoHeader->ImageId[Idx];\r | |
201 | }\r | |
202 | ImageId[Idx] = 0;\r | |
203 | \r | |
d5fb1edf JY |
204 | DEBUG ((DEBUG_INFO | DEBUG_INIT, "\n============= PEIM FSP v1.%x (%a v%x.%x.%x.%x) =============\n", \\r |
205 | PeiFspData->FspInfoHeader->HeaderRevision - 1, \\r | |
206 | ImageId, \\r | |
207 | (PeiFspData->FspInfoHeader->ImageRevision >> 24) & 0xff, \\r | |
208 | (PeiFspData->FspInfoHeader->ImageRevision >> 16) & 0xff, \\r | |
209 | (PeiFspData->FspInfoHeader->ImageRevision >> 8) & 0xff, \\r | |
210 | (PeiFspData->FspInfoHeader->ImageRevision >> 0) & 0xff));\r | |
c8ec22a2 JY |
211 | \r |
212 | }\r | |
213 | \r | |
214 | /**\r | |
215 | \r | |
216 | Adjust the FSP data pointers after the stack is migrated to memory.\r | |
217 | \r | |
218 | @param[in] OffsetGap The offset gap between the old stack and the new stack.\r | |
219 | \r | |
220 | **/\r | |
221 | VOID\r | |
222 | FspDataPointerFixUp (\r | |
223 | IN UINT32 OffsetGap\r | |
224 | )\r | |
225 | {\r | |
226 | FSP_GLOBAL_DATA *NewFspData;\r | |
227 | \r | |
228 | NewFspData = (FSP_GLOBAL_DATA *)((UINTN)GetFspGlobalDataPointer() + (UINTN)OffsetGap);\r | |
229 | SetFspGlobalDataPointer (NewFspData);\r | |
230 | }\r | |
231 | \r | |
232 | /**\r | |
233 | This function check the FSP API calling condition.\r | |
234 | \r | |
235 | @param[in] ApiIdx Internal index of the FSP API.\r | |
9da59186 | 236 | @param[in] ApiParam Parameter of the FSP API.\r |
c8ec22a2 JY |
237 | \r |
238 | **/\r | |
239 | EFI_STATUS\r | |
240 | EFIAPI\r | |
241 | FspApiCallingCheck (\r | |
9da59186 JY |
242 | IN UINT32 ApiIdx,\r |
243 | IN VOID *ApiParam\r | |
c8ec22a2 JY |
244 | )\r |
245 | {\r | |
9da59186 JY |
246 | EFI_STATUS Status;\r |
247 | FSP_GLOBAL_DATA *FspData;\r | |
248 | FSP_INIT_PARAMS *FspInitParams;\r | |
249 | FSP_INIT_RT_COMMON_BUFFER *FspRtBuffer;\r | |
250 | \r | |
251 | FspInitParams = (FSP_INIT_PARAMS *) ApiParam;\r | |
252 | FspRtBuffer = ((FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr);\r | |
c8ec22a2 JY |
253 | \r |
254 | Status = EFI_SUCCESS;\r | |
9da59186 | 255 | FspData = GetFspGlobalDataPointer ();\r |
c8ec22a2 JY |
256 | if (ApiIdx == 1) {\r |
257 | //\r | |
258 | // FspInit check\r | |
259 | //\r | |
260 | if ((UINT32)FspData != 0xFFFFFFFF) {\r | |
261 | Status = EFI_UNSUPPORTED;\r | |
b2344187 | 262 | } else if ((FspRtBuffer == NULL) || ((FspRtBuffer->BootLoaderTolumSize % EFI_PAGE_SIZE) != 0) || (EFI_ERROR(FspUpdSignatureCheck(ApiIdx, ApiParam)))) {\r |
9da59186 | 263 | Status = EFI_INVALID_PARAMETER;\r |
c8ec22a2 JY |
264 | }\r |
265 | } else if (ApiIdx == 2) {\r | |
266 | //\r | |
267 | // NotifyPhase check\r | |
268 | //\r | |
269 | if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) {\r | |
270 | Status = EFI_UNSUPPORTED;\r | |
271 | } else {\r | |
272 | if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {\r | |
273 | Status = EFI_UNSUPPORTED;\r | |
274 | }\r | |
275 | }\r | |
d5fb1edf JY |
276 | } else if (ApiIdx == 3) {\r |
277 | //\r | |
278 | // FspMemoryInit check\r | |
279 | //\r | |
280 | if ((UINT32)FspData != 0xFFFFFFFF) {\r | |
281 | Status = EFI_UNSUPPORTED;\r | |
b2344187 | 282 | } else if ((FspRtBuffer == NULL) || ((FspRtBuffer->BootLoaderTolumSize % EFI_PAGE_SIZE) != 0) || (EFI_ERROR(FspUpdSignatureCheck(ApiIdx, ApiParam)))) {\r |
9da59186 | 283 | Status = EFI_INVALID_PARAMETER;\r |
d5fb1edf JY |
284 | }\r |
285 | } else if (ApiIdx == 4) {\r | |
286 | //\r | |
287 | // TempRamExit check\r | |
288 | //\r | |
289 | if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) {\r | |
290 | Status = EFI_UNSUPPORTED;\r | |
291 | } else {\r | |
292 | if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {\r | |
293 | Status = EFI_UNSUPPORTED;\r | |
294 | }\r | |
295 | }\r | |
296 | } else if (ApiIdx == 5) {\r | |
297 | //\r | |
298 | // FspSiliconInit check\r | |
299 | //\r | |
300 | if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) {\r | |
301 | Status = EFI_UNSUPPORTED;\r | |
302 | } else {\r | |
303 | if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {\r | |
304 | Status = EFI_UNSUPPORTED;\r | |
b2344187 JY |
305 | } else if (EFI_ERROR(FspUpdSignatureCheck(ApiIdx, ApiParam))) {\r |
306 | Status = EFI_INVALID_PARAMETER;\r | |
d5fb1edf JY |
307 | }\r |
308 | }\r | |
c8ec22a2 JY |
309 | } else {\r |
310 | Status = EFI_UNSUPPORTED;\r | |
311 | }\r | |
312 | \r | |
313 | return Status;\r | |
314 | }\r | |
9da59186 JY |
315 | \r |
316 | /**\r | |
317 | This function gets the boot FV offset in FSP.\r | |
318 | @return the boot firmware volumen offset inside FSP binary\r | |
319 | \r | |
320 | **/\r | |
321 | UINT32\r | |
322 | EFIAPI\r | |
323 | GetBootFirmwareVolumeOffset (\r | |
324 | VOID\r | |
325 | )\r | |
326 | { \r | |
327 | return PcdGet32 (PcdFspBootFirmwareVolumeBase) - PcdGet32 (PcdFspAreaBaseAddress);\r | |
328 | }\r |