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1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>\r | |
4 | This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php.\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | **/\r | |
13 | \r | |
14 | #include "SecFsp.h"\r | |
15 | \r | |
16 | UINT32 FspImageSizeOffset = FSP_INFO_HEADER_OFF + OFFSET_IN_FSP_INFO_HEADER(ImageSize);\r | |
17 | \r | |
18 | /**\r | |
19 | \r | |
20 | Calculate the FSP IDT gate descriptor.\r | |
21 | \r | |
22 | @param[in] IdtEntryTemplate IDT gate descriptor template.\r | |
23 | \r | |
24 | @return FSP specific IDT gate descriptor.\r | |
25 | \r | |
26 | **/\r | |
27 | UINT64\r | |
28 | FspGetExceptionHandler(\r | |
29 | IN UINT64 IdtEntryTemplate\r | |
30 | )\r | |
31 | {\r | |
32 | UINT32 Entry;\r | |
33 | UINT64 ExceptionHandler;\r | |
34 | IA32_IDT_GATE_DESCRIPTOR *IdtGateDescriptor;\r | |
35 | FSP_INFO_HEADER *FspInfoHeader;\r | |
36 | \r | |
37 | FspInfoHeader = (FSP_INFO_HEADER *)(GetFspBaseAddress() + FSP_INFO_HEADER_OFF);\r | |
38 | ExceptionHandler = IdtEntryTemplate;\r | |
39 | IdtGateDescriptor = (IA32_IDT_GATE_DESCRIPTOR *)&ExceptionHandler;\r | |
40 | Entry = (IdtGateDescriptor->Bits.OffsetHigh << 16) | IdtGateDescriptor->Bits.OffsetLow;\r | |
41 | Entry = FspInfoHeader->ImageBase + FspInfoHeader->ImageSize - (~Entry + 1);\r | |
42 | IdtGateDescriptor->Bits.OffsetHigh = (UINT16)(Entry >> 16);\r | |
43 | IdtGateDescriptor->Bits.OffsetLow = (UINT16)Entry;\r | |
44 | \r | |
45 | return ExceptionHandler;\r | |
46 | }\r | |
47 | \r | |
48 | /**\r | |
49 | This function gets the FSP UPD region offset in flash.\r | |
50 | \r | |
51 | @return the offset of the UPD region.\r | |
52 | \r | |
53 | **/\r | |
54 | UINT32\r | |
55 | EFIAPI\r | |
56 | GetFspUpdRegionOffset (\r | |
57 | VOID\r | |
58 | )\r | |
59 | {\r | |
60 | FSP_GLOBAL_DATA *FspData;\r | |
61 | UINT32 *Offset;\r | |
62 | \r | |
63 | FspData = GetFspGlobalDataPointer ();\r | |
64 | \r | |
65 | //\r | |
66 | // It is required to put PcdUpdRegionOffset at offset 0x000C\r | |
67 | // for all FSPs.\r | |
68 | // gPlatformFspPkgTokenSpaceGuid.PcdUpdRegionOffset | 0x000C | 0x12345678\r | |
69 | //\r | |
70 | Offset = (UINT32 *)(FspData->FspInfoHeader->ImageBase + \\r | |
71 | FspData->FspInfoHeader->CfgRegionOffset + 0x0C);\r | |
72 | \r | |
73 | return *Offset;\r | |
74 | }\r | |
75 | \r | |
76 | /**\r | |
77 | This interface fills platform specific data.\r | |
78 | \r | |
79 | @param[in,out] FspData Pointer to the FSP global data.\r | |
80 | \r | |
81 | **/\r | |
82 | VOID\r | |
83 | EFIAPI\r | |
84 | SecGetPlatformData (\r | |
85 | IN OUT FSP_GLOBAL_DATA *FspData\r | |
86 | )\r | |
87 | {\r | |
88 | FSP_PLAT_DATA *FspPlatformData;\r | |
89 | UINT32 TopOfCar;\r | |
90 | UINT32 *StackPtr;\r | |
91 | UINT32 DwordSize;\r | |
92 | \r | |
93 | FspPlatformData = &FspData->PlatformData;\r | |
94 | \r | |
95 | //\r | |
96 | // The entries of platform information, together with the number of them,\r | |
97 | // reside in the bottom of stack, left untouched by normal stack operation.\r | |
98 | //\r | |
99 | TopOfCar = PcdGet32 (PcdTemporaryRamBase) + PcdGet32 (PcdTemporaryRamSize);\r | |
100 | \r | |
101 | FspPlatformData->DataPtr = NULL;\r | |
102 | FspPlatformData->CodeRegionSize = 0;\r | |
103 | FspPlatformData->CodeRegionBase = 0;\r | |
104 | FspPlatformData->MicorcodeRegionBase = 0;\r | |
105 | FspPlatformData->MicorcodeRegionSize = 0;\r | |
106 | \r | |
107 | //\r | |
108 | // Pointer to the size field\r | |
109 | //\r | |
110 | StackPtr = (UINT32 *)(TopOfCar - sizeof(UINT32));\r | |
111 | \r | |
112 | while (*StackPtr != 0) {\r | |
113 | if (*(StackPtr - 1) == FSP_MCUD_SIGNATURE) {\r | |
114 | //\r | |
115 | // This following data was pushed onto stack after TempRamInit API\r | |
116 | //\r | |
117 | DwordSize = 4;\r | |
118 | StackPtr = StackPtr - 1 - DwordSize;\r | |
119 | CopyMem (&(FspPlatformData->CodeRegionBase), StackPtr, (DwordSize << 2));\r | |
120 | StackPtr--;\r | |
121 | } else if (*(StackPtr - 1) == FSP_PER0_SIGNATURE) {\r | |
122 | //\r | |
123 | // This is the performance data for InitTempMemory API entry/exit\r | |
124 | //\r | |
125 | DwordSize = 4;\r | |
126 | StackPtr = StackPtr - 1 - DwordSize;\r | |
127 | CopyMem (FspData->PerfData, StackPtr, (DwordSize << 2));\r | |
128 | ((UINT8 *)(&FspData->PerfData[0]))[7] = FSP_PERF_ID_API_TMPRAMINIT_ENTRY;\r | |
129 | ((UINT8 *)(&FspData->PerfData[1]))[7] = FSP_PERF_ID_API_TMPRAMINIT_EXIT;\r | |
130 | StackPtr--;\r | |
131 | } else {\r | |
132 | StackPtr -= (*StackPtr);\r | |
133 | }\r | |
134 | }\r | |
135 | }\r | |
136 | \r | |
137 | /**\r | |
138 | \r | |
139 | Initialize the FSP global data region.\r | |
140 | It needs to be done as soon as possible after the stack is setup.\r | |
141 | \r | |
142 | @param[in,out] PeiFspData Pointer of the FSP global data.\r | |
143 | @param[in] BootFirmwareVolume Point to the address of BootFirmwareVolume in stack.\r | |
144 | \r | |
145 | **/\r | |
146 | VOID\r | |
147 | FspGlobalDataInit (\r | |
148 | IN OUT FSP_GLOBAL_DATA *PeiFspData,\r | |
149 | IN VOID **BootFirmwareVolume\r | |
150 | )\r | |
151 | {\r | |
152 | VOID *UpdDataRgnPtr;\r | |
153 | FSP_INIT_PARAMS *FspInitParams;\r | |
154 | CHAR8 ImageId[9];\r | |
155 | UINTN Idx;\r | |
156 | \r | |
157 | //\r | |
158 | // Init PCIE_BAR with value and set global FSP data pointer.\r | |
159 | // PciExpress Base should have been programmed by platform already.\r | |
160 | //\r | |
161 | SetFspGlobalDataPointer (PeiFspData);\r | |
162 | ZeroMem ((VOID *)PeiFspData, sizeof(FSP_GLOBAL_DATA));\r | |
163 | \r | |
164 | PeiFspData->Signature = FSP_GLOBAL_DATA_SIGNATURE;\r | |
165 | PeiFspData->CoreStack = *(UINTN *)(BootFirmwareVolume + 2);\r | |
166 | PeiFspData->PerfIdx = 2;\r | |
167 | \r | |
168 | SetFspMeasurePoint (FSP_PERF_ID_API_FSPINIT_ENTRY);\r | |
169 | \r | |
170 | //\r | |
171 | // Get FSP Header offset\r | |
172 | // It may have multiple FVs, so look into the last one for FSP header\r | |
173 | //\r | |
174 | PeiFspData->FspInfoHeader = (FSP_INFO_HEADER *)(GetFspBaseAddress() + FSP_INFO_HEADER_OFF);\r | |
175 | SecGetPlatformData (PeiFspData);\r | |
176 | \r | |
177 | //\r | |
178 | // Initialize UPD pointer.\r | |
179 | //\r | |
180 | FspInitParams = (FSP_INIT_PARAMS *)GetFspApiParameter ();\r | |
181 | UpdDataRgnPtr = ((FSP_INIT_RT_COMMON_BUFFER *)FspInitParams->RtBufferPtr)->UpdDataRgnPtr;\r | |
182 | if (UpdDataRgnPtr == NULL) {\r | |
183 | UpdDataRgnPtr = (VOID *)(PeiFspData->FspInfoHeader->ImageBase + GetFspUpdRegionOffset());\r | |
184 | }\r | |
185 | SetFspUpdDataPointer (UpdDataRgnPtr);\r | |
186 | \r | |
187 | //\r | |
188 | // Initialize serial port\r | |
189 | // It might have been done in ProcessLibraryConstructorList(), however,\r | |
190 | // the FSP global data is not initialized at that time. So do it again\r | |
191 | // for safe.\r | |
192 | //\r | |
193 | SerialPortInitialize ();\r | |
194 | \r | |
195 | //\r | |
196 | // Ensure the golbal data pointer is valid\r | |
197 | //\r | |
198 | ASSERT (GetFspGlobalDataPointer () == PeiFspData);\r | |
199 | \r | |
200 | for (Idx = 0; Idx < 8; Idx++) {\r | |
201 | ImageId[Idx] = PeiFspData->FspInfoHeader->ImageId[Idx];\r | |
202 | }\r | |
203 | ImageId[Idx] = 0;\r | |
204 | \r | |
205 | DEBUG ((DEBUG_INFO | DEBUG_INIT, "\n============= PEIM FSP (%a 0x%08X) =============\n", \\r | |
206 | ImageId, PeiFspData->FspInfoHeader->ImageRevision));\r | |
207 | \r | |
208 | }\r | |
209 | \r | |
210 | /**\r | |
211 | \r | |
212 | Adjust the FSP data pointers after the stack is migrated to memory.\r | |
213 | \r | |
214 | @param[in] OffsetGap The offset gap between the old stack and the new stack.\r | |
215 | \r | |
216 | **/\r | |
217 | VOID\r | |
218 | FspDataPointerFixUp (\r | |
219 | IN UINT32 OffsetGap\r | |
220 | )\r | |
221 | {\r | |
222 | FSP_GLOBAL_DATA *NewFspData;\r | |
223 | \r | |
224 | NewFspData = (FSP_GLOBAL_DATA *)((UINTN)GetFspGlobalDataPointer() + (UINTN)OffsetGap);\r | |
225 | SetFspGlobalDataPointer (NewFspData);\r | |
226 | }\r | |
227 | \r | |
228 | /**\r | |
229 | This function check the FSP API calling condition.\r | |
230 | \r | |
231 | @param[in] ApiIdx Internal index of the FSP API.\r | |
232 | \r | |
233 | **/\r | |
234 | EFI_STATUS\r | |
235 | EFIAPI\r | |
236 | FspApiCallingCheck (\r | |
237 | UINT32 ApiIdx\r | |
238 | )\r | |
239 | {\r | |
240 | EFI_STATUS Status;\r | |
241 | FSP_GLOBAL_DATA *FspData;\r | |
242 | \r | |
243 | Status = EFI_SUCCESS;\r | |
244 | FspData = GetFspGlobalDataPointer ();\r | |
245 | if (ApiIdx == 1) {\r | |
246 | //\r | |
247 | // FspInit check\r | |
248 | //\r | |
249 | if ((UINT32)FspData != 0xFFFFFFFF) {\r | |
250 | Status = EFI_UNSUPPORTED;\r | |
251 | }\r | |
252 | } else if (ApiIdx == 2) {\r | |
253 | //\r | |
254 | // NotifyPhase check\r | |
255 | //\r | |
256 | if ((FspData == NULL) || ((UINT32)FspData == 0xFFFFFFFF)) {\r | |
257 | Status = EFI_UNSUPPORTED;\r | |
258 | } else {\r | |
259 | if (FspData->Signature != FSP_GLOBAL_DATA_SIGNATURE) {\r | |
260 | Status = EFI_UNSUPPORTED;\r | |
261 | }\r | |
262 | }\r | |
263 | } else {\r | |
264 | Status = EFI_UNSUPPORTED;\r | |
265 | }\r | |
266 | \r | |
267 | return Status;\r | |
268 | }\r |