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cf1d4549 JY |
1 | /** @file\r |
2 | \r | |
f2cdb268 | 3 | Copyright (c) 2014 - 2020, Intel Corporation. All rights reserved.<BR>\r |
9672cd30 | 4 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
cf1d4549 JY |
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 | 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 | |
29 | FspInfoHeader = (FSP_INFO_HEADER *)AsmGetFspInfoHeader();\r | |
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 interface fills platform specific data.\r | |
42 | \r | |
43 | @param[in,out] FspData Pointer to the FSP global data.\r | |
44 | \r | |
45 | **/\r | |
46 | VOID\r | |
47 | EFIAPI\r | |
48 | SecGetPlatformData (\r | |
49 | IN OUT FSP_GLOBAL_DATA *FspData\r | |
50 | )\r | |
51 | {\r | |
52 | FSP_PLAT_DATA *FspPlatformData;\r | |
53 | UINT32 TopOfCar;\r | |
54 | UINT32 *StackPtr;\r | |
55 | UINT32 DwordSize;\r | |
56 | \r | |
57 | FspPlatformData = &FspData->PlatformData;\r | |
58 | \r | |
59 | //\r | |
60 | // The entries of platform information, together with the number of them,\r | |
61 | // reside in the bottom of stack, left untouched by normal stack operation.\r | |
62 | //\r | |
63 | \r | |
64 | FspPlatformData->DataPtr = NULL;\r | |
65 | FspPlatformData->MicrocodeRegionBase = 0;\r | |
66 | FspPlatformData->MicrocodeRegionSize = 0;\r | |
67 | FspPlatformData->CodeRegionBase = 0;\r | |
68 | FspPlatformData->CodeRegionSize = 0;\r | |
69 | \r | |
70 | //\r | |
71 | // Pointer to the size field\r | |
72 | //\r | |
40bc7509 | 73 | TopOfCar = PcdGet32(PcdTemporaryRamBase) + PcdGet32(PcdTemporaryRamSize);\r |
cf1d4549 JY |
74 | StackPtr = (UINT32 *)(TopOfCar - sizeof (UINT32));\r |
75 | \r | |
76 | if (*(StackPtr - 1) == FSP_MCUD_SIGNATURE) {\r | |
77 | while (*StackPtr != 0) {\r | |
78 | if (*(StackPtr - 1) == FSP_MCUD_SIGNATURE) {\r | |
79 | //\r | |
80 | // This following data was pushed onto stack after TempRamInit API\r | |
81 | //\r | |
82 | DwordSize = 4;\r | |
83 | StackPtr = StackPtr - 1 - DwordSize;\r | |
84 | CopyMem (&(FspPlatformData->MicrocodeRegionBase), StackPtr, (DwordSize << 2));\r | |
85 | StackPtr--;\r | |
86 | } else if (*(StackPtr - 1) == FSP_PER0_SIGNATURE) {\r | |
87 | //\r | |
88 | // This is the performance data for InitTempMemory API entry/exit\r | |
89 | //\r | |
90 | DwordSize = 4;\r | |
91 | StackPtr = StackPtr - 1 - DwordSize;\r | |
92 | CopyMem (FspData->PerfData, StackPtr, (DwordSize << 2));\r | |
93 | \r | |
94 | ((UINT8 *)(&FspData->PerfData[0]))[7] = FSP_PERF_ID_API_TEMP_RAM_INIT_ENTRY;\r | |
95 | ((UINT8 *)(&FspData->PerfData[1]))[7] = FSP_PERF_ID_API_TEMP_RAM_INIT_EXIT;\r | |
96 | \r | |
97 | StackPtr--;\r | |
98 | } else {\r | |
99 | StackPtr -= (*StackPtr);\r | |
100 | }\r | |
101 | }\r | |
102 | }\r | |
103 | }\r | |
104 | \r | |
105 | /**\r | |
106 | \r | |
107 | Initialize the FSP global data region.\r | |
108 | It needs to be done as soon as possible after the stack is setup.\r | |
109 | \r | |
110 | @param[in,out] PeiFspData Pointer of the FSP global data.\r | |
111 | @param[in] BootLoaderStack BootLoader stack.\r | |
112 | @param[in] ApiIdx The index of the FSP API.\r | |
113 | \r | |
114 | **/\r | |
115 | VOID\r | |
116 | FspGlobalDataInit (\r | |
117 | IN OUT FSP_GLOBAL_DATA *PeiFspData,\r | |
118 | IN UINT32 BootLoaderStack,\r | |
119 | IN UINT8 ApiIdx\r | |
120 | )\r | |
121 | {\r | |
122 | VOID *FspmUpdDataPtr;\r | |
123 | CHAR8 ImageId[9];\r | |
124 | UINTN Idx;\r | |
125 | \r | |
126 | //\r | |
127 | // Set FSP Global Data pointer\r | |
128 | //\r | |
129 | SetFspGlobalDataPointer (PeiFspData);\r | |
130 | ZeroMem ((VOID *)PeiFspData, sizeof(FSP_GLOBAL_DATA));\r | |
131 | \r | |
132 | PeiFspData->Signature = FSP_GLOBAL_DATA_SIGNATURE;\r | |
133 | PeiFspData->Version = 0;\r | |
134 | PeiFspData->CoreStack = BootLoaderStack;\r | |
135 | PeiFspData->PerfIdx = 2;\r | |
136 | PeiFspData->PerfSig = FSP_PERFORMANCE_DATA_SIGNATURE;\r | |
cf1d4549 JY |
137 | \r |
138 | SetFspMeasurePoint (FSP_PERF_ID_API_FSP_MEMORY_INIT_ENTRY);\r | |
139 | \r | |
140 | //\r | |
141 | // Get FSP Header offset\r | |
142 | // It may have multiple FVs, so look into the last one for FSP header\r | |
143 | //\r | |
144 | PeiFspData->FspInfoHeader = (FSP_INFO_HEADER *)AsmGetFspInfoHeader();\r | |
145 | SecGetPlatformData (PeiFspData);\r | |
146 | \r | |
147 | //\r | |
148 | // Set API calling mode\r | |
149 | //\r | |
150 | SetFspApiCallingIndex (ApiIdx);\r | |
e37bb20c | 151 | \r |
cf1d4549 JY |
152 | //\r |
153 | // Set UPD pointer\r | |
154 | //\r | |
155 | FspmUpdDataPtr = (VOID *) GetFspApiParameter ();\r | |
156 | if (FspmUpdDataPtr == NULL) {\r | |
157 | FspmUpdDataPtr = (VOID *)(PeiFspData->FspInfoHeader->ImageBase + PeiFspData->FspInfoHeader->CfgRegionOffset);\r | |
158 | }\r | |
159 | SetFspUpdDataPointer (FspmUpdDataPtr);\r | |
160 | SetFspMemoryInitUpdDataPointer (FspmUpdDataPtr);\r | |
161 | SetFspSiliconInitUpdDataPointer (NULL);\r | |
162 | \r | |
f2cdb268 CC |
163 | //\r |
164 | // Initialize OnSeparateStack value.\r | |
165 | //\r | |
166 | if (PcdGet8 (PcdFspHeapSizePercentage) != 0) {\r | |
167 | //\r | |
168 | // FSP is running on its own stack and may need switching stack when calling bootloader functions.\r | |
169 | //\r | |
170 | GetFspGlobalDataPointer ()->OnSeparateStack = 1;\r | |
171 | }\r | |
172 | \r | |
cf1d4549 JY |
173 | //\r |
174 | // Initialize serial port\r | |
175 | // It might have been done in ProcessLibraryConstructorList(), however,\r | |
176 | // the FSP global data is not initialized at that time. So do it again\r | |
177 | // for safe.\r | |
178 | //\r | |
179 | SerialPortInitialize ();\r | |
180 | \r | |
181 | //\r | |
91cc60ba | 182 | // Ensure the global data pointer is valid\r |
cf1d4549 JY |
183 | //\r |
184 | ASSERT (GetFspGlobalDataPointer () == PeiFspData);\r | |
185 | \r | |
186 | for (Idx = 0; Idx < 8; Idx++) {\r | |
187 | ImageId[Idx] = PeiFspData->FspInfoHeader->ImageId[Idx];\r | |
188 | }\r | |
189 | ImageId[Idx] = 0;\r | |
190 | \r | |
191 | DEBUG ((DEBUG_INFO | DEBUG_INIT, "\n============= FSP Spec v%d.%d Header Revision v%x (%a v%x.%x.%x.%x) =============\n", \\r | |
192 | (PeiFspData->FspInfoHeader->SpecVersion >> 4) & 0xF, \\r | |
193 | PeiFspData->FspInfoHeader->SpecVersion & 0xF, \\r | |
194 | PeiFspData->FspInfoHeader->HeaderRevision, \\r | |
195 | ImageId, \\r | |
196 | (PeiFspData->FspInfoHeader->ImageRevision >> 24) & 0xFF, \\r | |
197 | (PeiFspData->FspInfoHeader->ImageRevision >> 16) & 0xFF, \\r | |
198 | (PeiFspData->FspInfoHeader->ImageRevision >> 8) & 0xFF, \\r | |
199 | PeiFspData->FspInfoHeader->ImageRevision & 0xFF));\r | |
200 | }\r | |
201 | \r | |
202 | /**\r | |
203 | \r | |
204 | Adjust the FSP data pointers after the stack is migrated to memory.\r | |
205 | \r | |
206 | @param[in] OffsetGap The offset gap between the old stack and the new stack.\r | |
207 | \r | |
208 | **/\r | |
209 | VOID\r | |
210 | FspDataPointerFixUp (\r | |
211 | IN UINT32 OffsetGap\r | |
212 | )\r | |
213 | {\r | |
214 | FSP_GLOBAL_DATA *NewFspData;\r | |
215 | \r | |
216 | NewFspData = (FSP_GLOBAL_DATA *)((UINTN)GetFspGlobalDataPointer() + (UINTN)OffsetGap);\r | |
217 | SetFspGlobalDataPointer (NewFspData);\r | |
218 | }\r |