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1 | /** @file\r | |
2 | \r | |
3 | Copyright (c) 2014 - 2022, Intel Corporation. All rights reserved.<BR>\r | |
4 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
5 | \r | |
6 | **/\r | |
7 | \r | |
8 | #include "SecFsp.h"\r | |
9 | \r | |
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 | IA32_IDT_GATE_DESCRIPTOR\r | |
20 | FspGetExceptionHandler (\r | |
21 | IN UINT64 IdtEntryTemplate\r | |
22 | )\r | |
23 | {\r | |
24 | UINT32 Entry;\r | |
25 | IA32_IDT_GATE_DESCRIPTOR ExceptionHandler;\r | |
26 | IA32_IDT_GATE_DESCRIPTOR *IdtGateDescriptor;\r | |
27 | FSP_INFO_HEADER *FspInfoHeader;\r | |
28 | \r | |
29 | ZeroMem ((VOID *)&ExceptionHandler, sizeof (IA32_IDT_GATE_DESCRIPTOR));\r | |
30 | FspInfoHeader = (FSP_INFO_HEADER *)(UINTN)AsmGetFspInfoHeader ();\r | |
31 | *(UINT64 *) &ExceptionHandler = IdtEntryTemplate;\r | |
32 | IdtGateDescriptor = &ExceptionHandler;\r | |
33 | Entry = (IdtGateDescriptor->Bits.OffsetHigh << 16) | IdtGateDescriptor->Bits.OffsetLow;\r | |
34 | Entry = FspInfoHeader->ImageBase + FspInfoHeader->ImageSize - (~Entry + 1);\r | |
35 | IdtGateDescriptor->Bits.OffsetHigh = (UINT16)(Entry >> 16);\r | |
36 | IdtGateDescriptor->Bits.OffsetLow = (UINT16)Entry;\r | |
37 | \r | |
38 | return ExceptionHandler;\r | |
39 | }\r | |
40 | \r | |
41 | /**\r | |
42 | This interface fills platform specific data.\r | |
43 | \r | |
44 | @param[in,out] FspData Pointer to the FSP global data.\r | |
45 | \r | |
46 | **/\r | |
47 | VOID\r | |
48 | EFIAPI\r | |
49 | SecGetPlatformData (\r | |
50 | IN OUT FSP_GLOBAL_DATA *FspData\r | |
51 | )\r | |
52 | {\r | |
53 | FSP_PLAT_DATA *FspPlatformData;\r | |
54 | UINT32 TopOfCar;\r | |
55 | UINT32 *StackPtr;\r | |
56 | UINT32 DwordSize;\r | |
57 | \r | |
58 | FspPlatformData = &FspData->PlatformData;\r | |
59 | \r | |
60 | //\r | |
61 | // The entries of platform information, together with the number of them,\r | |
62 | // reside in the bottom of stack, left untouched by normal stack operation.\r | |
63 | //\r | |
64 | \r | |
65 | FspPlatformData->DataPtr = NULL;\r | |
66 | FspPlatformData->MicrocodeRegionBase = 0;\r | |
67 | FspPlatformData->MicrocodeRegionSize = 0;\r | |
68 | FspPlatformData->CodeRegionBase = 0;\r | |
69 | FspPlatformData->CodeRegionSize = 0;\r | |
70 | \r | |
71 | //\r | |
72 | // Pointer to the size field\r | |
73 | //\r | |
74 | TopOfCar = PcdGet32 (PcdTemporaryRamBase) + PcdGet32 (PcdTemporaryRamSize);\r | |
75 | StackPtr = (UINT32 *)(TopOfCar - sizeof (UINT32));\r | |
76 | \r | |
77 | if (*(StackPtr - 1) == FSP_MCUD_SIGNATURE) {\r | |
78 | while (*StackPtr != 0) {\r | |
79 | if (*(StackPtr - 1) == FSP_MCUD_SIGNATURE) {\r | |
80 | //\r | |
81 | // This following data was pushed onto stack after TempRamInit API\r | |
82 | //\r | |
83 | DwordSize = 4;\r | |
84 | StackPtr = StackPtr - 1 - DwordSize;\r | |
85 | CopyMem (&(FspPlatformData->MicrocodeRegionBase), StackPtr, (DwordSize << 2));\r | |
86 | StackPtr--;\r | |
87 | } else if (*(StackPtr - 1) == FSP_PER0_SIGNATURE) {\r | |
88 | //\r | |
89 | // This is the performance data for InitTempMemory API entry/exit\r | |
90 | //\r | |
91 | DwordSize = 4;\r | |
92 | StackPtr = StackPtr - 1 - DwordSize;\r | |
93 | CopyMem (FspData->PerfData, StackPtr, (DwordSize << 2));\r | |
94 | \r | |
95 | ((UINT8 *)(&FspData->PerfData[0]))[7] = FSP_PERF_ID_API_TEMP_RAM_INIT_ENTRY;\r | |
96 | ((UINT8 *)(&FspData->PerfData[1]))[7] = FSP_PERF_ID_API_TEMP_RAM_INIT_EXIT;\r | |
97 | \r | |
98 | StackPtr--;\r | |
99 | } else {\r | |
100 | StackPtr -= (*StackPtr);\r | |
101 | }\r | |
102 | }\r | |
103 | }\r | |
104 | }\r | |
105 | \r | |
106 | /**\r | |
107 | \r | |
108 | Initialize the FSP global data region.\r | |
109 | It needs to be done as soon as possible after the stack is setup.\r | |
110 | \r | |
111 | @param[in,out] PeiFspData Pointer of the FSP global data.\r | |
112 | @param[in] BootLoaderStack BootLoader stack.\r | |
113 | @param[in] ApiIdx The index of the FSP API.\r | |
114 | \r | |
115 | **/\r | |
116 | VOID\r | |
117 | FspGlobalDataInit (\r | |
118 | IN OUT FSP_GLOBAL_DATA *PeiFspData,\r | |
119 | IN UINTN BootLoaderStack,\r | |
120 | IN UINT8 ApiIdx\r | |
121 | )\r | |
122 | {\r | |
123 | VOID *FspmUpdDataPtr;\r | |
124 | CHAR8 ImageId[9];\r | |
125 | UINTN Idx;\r | |
126 | \r | |
127 | //\r | |
128 | // Set FSP Global Data pointer\r | |
129 | //\r | |
130 | SetFspGlobalDataPointer (PeiFspData);\r | |
131 | ZeroMem ((VOID *)PeiFspData, sizeof (FSP_GLOBAL_DATA));\r | |
132 | \r | |
133 | PeiFspData->Signature = FSP_GLOBAL_DATA_SIGNATURE;\r | |
134 | PeiFspData->Version = FSP_GLOBAL_DATA_VERSION;\r | |
135 | PeiFspData->CoreStack = BootLoaderStack;\r | |
136 | PeiFspData->PerfIdx = 2;\r | |
137 | PeiFspData->PerfSig = FSP_PERFORMANCE_DATA_SIGNATURE;\r | |
138 | //\r | |
139 | // Cache FspHobList pointer passed by bootloader via ApiParameter2\r | |
140 | //\r | |
141 | PeiFspData->FspHobListPtr = (VOID **)GetFspApiParameter2 ();\r | |
142 | \r | |
143 | SetFspMeasurePoint (FSP_PERF_ID_API_FSP_MEMORY_INIT_ENTRY);\r | |
144 | \r | |
145 | //\r | |
146 | // Get FSP Header offset\r | |
147 | // It may have multiple FVs, so look into the last one for FSP header\r | |
148 | //\r | |
149 | PeiFspData->FspInfoHeader = (FSP_INFO_HEADER *)(UINTN)AsmGetFspInfoHeader ();\r | |
150 | SecGetPlatformData (PeiFspData);\r | |
151 | \r | |
152 | //\r | |
153 | // Set API calling mode\r | |
154 | //\r | |
155 | SetFspApiCallingIndex (ApiIdx);\r | |
156 | \r | |
157 | //\r | |
158 | // Set UPD pointer\r | |
159 | //\r | |
160 | FspmUpdDataPtr = (VOID *)GetFspApiParameter ();\r | |
161 | if (FspmUpdDataPtr == NULL) {\r | |
162 | FspmUpdDataPtr = (VOID *)(UINTN)(PeiFspData->FspInfoHeader->ImageBase + PeiFspData->FspInfoHeader->CfgRegionOffset);\r | |
163 | }\r | |
164 | \r | |
165 | SetFspUpdDataPointer (FspmUpdDataPtr);\r | |
166 | SetFspMemoryInitUpdDataPointer (FspmUpdDataPtr);\r | |
167 | SetFspSiliconInitUpdDataPointer (NULL);\r | |
168 | \r | |
169 | //\r | |
170 | // Initialize OnSeparateStack value.\r | |
171 | //\r | |
172 | if (PcdGet8 (PcdFspHeapSizePercentage) != 0) {\r | |
173 | //\r | |
174 | // FSP is running on its own stack and may need switching stack when calling bootloader functions.\r | |
175 | //\r | |
176 | GetFspGlobalDataPointer ()->OnSeparateStack = 1;\r | |
177 | }\r | |
178 | \r | |
179 | //\r | |
180 | // Initialize serial port\r | |
181 | // It might have been done in ProcessLibraryConstructorList(), however,\r | |
182 | // the FSP global data is not initialized at that time. So do it again\r | |
183 | // for safe.\r | |
184 | //\r | |
185 | SerialPortInitialize ();\r | |
186 | \r | |
187 | //\r | |
188 | // Ensure the global data pointer is valid\r | |
189 | //\r | |
190 | ASSERT (GetFspGlobalDataPointer () == PeiFspData);\r | |
191 | \r | |
192 | for (Idx = 0; Idx < 8; Idx++) {\r | |
193 | ImageId[Idx] = PeiFspData->FspInfoHeader->ImageId[Idx];\r | |
194 | }\r | |
195 | \r | |
196 | ImageId[Idx] = 0;\r | |
197 | \r | |
198 | DEBUG ((\r | |
199 | DEBUG_INFO | DEBUG_INIT,\r | |
200 | "\n============= FSP Spec v%d.%d Header Revision v%x (%a v%x.%x.%x.%x) =============\n", \\r | |
201 | (PeiFspData->FspInfoHeader->SpecVersion >> 4) & 0xF, \\r | |
202 | PeiFspData->FspInfoHeader->SpecVersion & 0xF, \\r | |
203 | PeiFspData->FspInfoHeader->HeaderRevision, \\r | |
204 | ImageId, \\r | |
205 | (PeiFspData->FspInfoHeader->ImageRevision >> 24) & 0xFF, \\r | |
206 | (PeiFspData->FspInfoHeader->ImageRevision >> 16) & 0xFF, \\r | |
207 | (PeiFspData->FspInfoHeader->HeaderRevision >= 6) ? \\r | |
208 | (((PeiFspData->FspInfoHeader->ImageRevision >> 8) & 0xFF) | (PeiFspData->FspInfoHeader->ExtendedImageRevision & 0xFF00)) : \\r | |
209 | ((PeiFspData->FspInfoHeader->ImageRevision >> 8) & 0xFF), \\r | |
210 | (PeiFspData->FspInfoHeader->HeaderRevision >= 6) ? \\r | |
211 | ((PeiFspData->FspInfoHeader->ImageRevision & 0xFF) | ((PeiFspData->FspInfoHeader->ExtendedImageRevision & 0xFF) << 8)) : \\r | |
212 | (PeiFspData->FspInfoHeader->ImageRevision & 0xFF)\r | |
213 | ));\r | |
214 | }\r | |
215 | \r | |
216 | /**\r | |
217 | \r | |
218 | Adjust the FSP data pointers after the stack is migrated to memory.\r | |
219 | \r | |
220 | @param[in] OffsetGap The offset gap between the old stack and the new stack.\r | |
221 | \r | |
222 | **/\r | |
223 | VOID\r | |
224 | FspDataPointerFixUp (\r | |
225 | IN UINTN OffsetGap\r | |
226 | )\r | |
227 | {\r | |
228 | FSP_GLOBAL_DATA *NewFspData;\r | |
229 | \r | |
230 | NewFspData = (FSP_GLOBAL_DATA *)((UINTN)GetFspGlobalDataPointer () + (UINTN)OffsetGap);\r | |
231 | SetFspGlobalDataPointer (NewFspData);\r | |
232 | }\r |