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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 "SecMain.h"\r | |
9 | #include "SecFsp.h"\r | |
10 | \r | |
11 | EFI_PEI_TEMPORARY_RAM_SUPPORT_PPI gSecTemporaryRamSupportPpi = {\r | |
12 | SecTemporaryRamSupport\r | |
13 | };\r | |
14 | \r | |
15 | EFI_PEI_PPI_DESCRIPTOR mPeiSecPlatformInformationPpi[] = {\r | |
a2e61f34 CC |
16 | {\r |
17 | EFI_PEI_PPI_DESCRIPTOR_PPI,\r | |
18 | &gFspInApiModePpiGuid,\r | |
19 | NULL\r | |
20 | },\r | |
cf1d4549 JY |
21 | {\r |
22 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
23 | &gEfiTemporaryRamSupportPpiGuid,\r | |
24 | &gSecTemporaryRamSupportPpi\r | |
25 | }\r | |
26 | };\r | |
27 | \r | |
28 | //\r | |
29 | // These are IDT entries pointing to 08:FFFFFFE4h.\r | |
30 | //\r | |
31 | UINT64 mIdtEntryTemplate = 0xffff8e000008ffe4ULL;\r | |
32 | \r | |
33 | /**\r | |
34 | \r | |
35 | Entry point to the C language phase of SEC. After the SEC assembly\r | |
36 | code has initialized some temporary memory and set up the stack,\r | |
37 | the control is transferred to this function.\r | |
38 | \r | |
39 | \r | |
40 | @param[in] SizeOfRam Size of the temporary memory available for use.\r | |
058dcbf2 | 41 | @param[in] TempRamBase Base address of temporary ram\r |
cf1d4549 JY |
42 | @param[in] BootFirmwareVolume Base address of the Boot Firmware Volume.\r |
43 | @param[in] PeiCore PeiCore entry point.\r | |
44 | @param[in] BootLoaderStack BootLoader stack.\r | |
45 | @param[in] ApiIdx the index of API.\r | |
46 | \r | |
47 | @return This function never returns.\r | |
48 | \r | |
49 | **/\r | |
50 | VOID\r | |
51 | EFIAPI\r | |
52 | SecStartup (\r | |
53 | IN UINT32 SizeOfRam,\r | |
54 | IN UINT32 TempRamBase,\r | |
55 | IN VOID *BootFirmwareVolume,\r | |
56 | IN PEI_CORE_ENTRY PeiCore,\r | |
57 | IN UINT32 BootLoaderStack,\r | |
58 | IN UINT32 ApiIdx\r | |
59 | )\r | |
60 | {\r | |
61 | EFI_SEC_PEI_HAND_OFF SecCoreData;\r | |
62 | IA32_DESCRIPTOR IdtDescriptor;\r | |
63 | SEC_IDT_TABLE IdtTableInStack;\r | |
64 | UINT32 Index;\r | |
65 | FSP_GLOBAL_DATA PeiFspData;\r | |
66 | UINT64 ExceptionHandler;\r | |
b1cc6f67 | 67 | UINTN IdtSize;\r |
cf1d4549 JY |
68 | \r |
69 | //\r | |
70 | // Process all libraries constructor function linked to SecCore.\r | |
71 | //\r | |
72 | ProcessLibraryConstructorList ();\r | |
73 | \r | |
74 | //\r | |
75 | // Initialize floating point operating environment\r | |
76 | // to be compliant with UEFI spec.\r | |
77 | //\r | |
78 | InitializeFloatingPointUnits ();\r | |
79 | \r | |
12a0a80b CC |
80 | //\r |
81 | // Scenario 1 memory map when running on bootloader stack\r | |
82 | //\r | |
83 | // |-------------------|---->\r | |
84 | // |Idt Table |\r | |
85 | // |-------------------|\r | |
86 | // |PeiService Pointer |\r | |
87 | // |-------------------|\r | |
88 | // | |\r | |
89 | // | |\r | |
90 | // | Heap |\r | |
91 | // | |\r | |
92 | // | |\r | |
93 | // |-------------------|----> TempRamBase\r | |
94 | //\r | |
95 | //\r | |
96 | // |-------------------|\r | |
97 | // |Bootloader stack |----> somewhere in memory, FSP will share this stack.\r | |
98 | // |-------------------|\r | |
cf1d4549 | 99 | \r |
12a0a80b CC |
100 | //\r |
101 | // Scenario 2 memory map when running FSP on a separate stack\r | |
102 | //\r | |
cf1d4549 JY |
103 | // |-------------------|---->\r |
104 | // |Idt Table |\r | |
105 | // |-------------------|\r | |
106 | // |PeiService Pointer | PeiStackSize\r | |
107 | // |-------------------|\r | |
108 | // | |\r | |
109 | // | Stack |\r | |
110 | // |-------------------|---->\r | |
111 | // | |\r | |
112 | // | |\r | |
91cc60ba | 113 | // | Heap | PeiTemporaryRamSize\r |
cf1d4549 JY |
114 | // | |\r |
115 | // | |\r | |
116 | // |-------------------|----> TempRamBase\r | |
520a1e60 | 117 | IdtTableInStack.PeiService = 0;\r |
b1cc6f67 | 118 | AsmReadIdtr (&IdtDescriptor);\r |
c09b254b | 119 | if (IdtDescriptor.Base == 0) {\r |
b1cc6f67 CC |
120 | ExceptionHandler = FspGetExceptionHandler(mIdtEntryTemplate);\r |
121 | for (Index = 0; Index < FixedPcdGet8(PcdFspMaxInterruptSupported); Index ++) {\r | |
122 | CopyMem ((VOID*)&IdtTableInStack.IdtTable[Index], (VOID*)&ExceptionHandler, sizeof (UINT64));\r | |
123 | }\r | |
124 | IdtSize = sizeof (IdtTableInStack.IdtTable);\r | |
125 | } else {\r | |
901ae29d CC |
126 | IdtSize = IdtDescriptor.Limit + 1;\r |
127 | if (IdtSize > sizeof (IdtTableInStack.IdtTable)) {\r | |
b1cc6f67 CC |
128 | //\r |
129 | // ERROR: IDT table size from boot loader is larger than FSP can support, DeadLoop here!\r | |
130 | //\r | |
131 | CpuDeadLoop();\r | |
c09b254b CC |
132 | } else {\r |
133 | CopyMem ((VOID *) (UINTN) &IdtTableInStack.IdtTable, (VOID *) IdtDescriptor.Base, IdtSize);\r | |
b1cc6f67 | 134 | }\r |
cf1d4549 | 135 | }\r |
cf1d4549 | 136 | IdtDescriptor.Base = (UINTN) &IdtTableInStack.IdtTable;\r |
b1cc6f67 | 137 | IdtDescriptor.Limit = (UINT16)(IdtSize - 1);\r |
cf1d4549 JY |
138 | \r |
139 | AsmWriteIdtr (&IdtDescriptor);\r | |
140 | \r | |
141 | //\r | |
142 | // Initialize the global FSP data region\r | |
143 | //\r | |
144 | FspGlobalDataInit (&PeiFspData, BootLoaderStack, (UINT8)ApiIdx);\r | |
145 | \r | |
146 | //\r | |
147 | // Update the base address and length of Pei temporary memory\r | |
148 | //\r | |
149 | SecCoreData.DataSize = sizeof (EFI_SEC_PEI_HAND_OFF);\r | |
150 | SecCoreData.BootFirmwareVolumeBase = BootFirmwareVolume;\r | |
151 | SecCoreData.BootFirmwareVolumeSize = (UINT32)((EFI_FIRMWARE_VOLUME_HEADER *)BootFirmwareVolume)->FvLength;\r | |
152 | \r | |
153 | SecCoreData.TemporaryRamBase = (VOID*)(UINTN) TempRamBase;\r | |
12a0a80b CC |
154 | if (PcdGet8 (PcdFspHeapSizePercentage) == 0) {\r |
155 | SecCoreData.TemporaryRamSize = SizeOfRam; // stack size that is going to be copied to the permanent memory\r | |
156 | SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r | |
157 | SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize;\r | |
158 | SecCoreData.StackBase = (VOID *)GetFspEntryStack(); // Share the same boot loader stack\r | |
159 | SecCoreData.StackSize = 0;\r | |
160 | } else {\r | |
161 | SecCoreData.TemporaryRamSize = SizeOfRam;\r | |
162 | SecCoreData.PeiTemporaryRamBase = SecCoreData.TemporaryRamBase;\r | |
163 | SecCoreData.PeiTemporaryRamSize = SecCoreData.TemporaryRamSize * PcdGet8 (PcdFspHeapSizePercentage) / 100;\r | |
164 | SecCoreData.StackBase = (VOID*)(UINTN)((UINTN)SecCoreData.TemporaryRamBase + SecCoreData.PeiTemporaryRamSize);\r | |
165 | SecCoreData.StackSize = SecCoreData.TemporaryRamSize - SecCoreData.PeiTemporaryRamSize;\r | |
166 | }\r | |
cf1d4549 JY |
167 | \r |
168 | DEBUG ((DEBUG_INFO, "Fsp BootFirmwareVolumeBase - 0x%x\n", SecCoreData.BootFirmwareVolumeBase));\r | |
169 | DEBUG ((DEBUG_INFO, "Fsp BootFirmwareVolumeSize - 0x%x\n", SecCoreData.BootFirmwareVolumeSize));\r | |
170 | DEBUG ((DEBUG_INFO, "Fsp TemporaryRamBase - 0x%x\n", SecCoreData.TemporaryRamBase));\r | |
171 | DEBUG ((DEBUG_INFO, "Fsp TemporaryRamSize - 0x%x\n", SecCoreData.TemporaryRamSize));\r | |
172 | DEBUG ((DEBUG_INFO, "Fsp PeiTemporaryRamBase - 0x%x\n", SecCoreData.PeiTemporaryRamBase));\r | |
173 | DEBUG ((DEBUG_INFO, "Fsp PeiTemporaryRamSize - 0x%x\n", SecCoreData.PeiTemporaryRamSize));\r | |
174 | DEBUG ((DEBUG_INFO, "Fsp StackBase - 0x%x\n", SecCoreData.StackBase));\r | |
175 | DEBUG ((DEBUG_INFO, "Fsp StackSize - 0x%x\n", SecCoreData.StackSize));\r | |
176 | \r | |
177 | //\r | |
178 | // Call PeiCore Entry\r | |
e37bb20c | 179 | //\r |
cf1d4549 JY |
180 | PeiCore (&SecCoreData, mPeiSecPlatformInformationPpi);\r |
181 | \r | |
182 | //\r | |
183 | // Should never be here\r | |
184 | //\r | |
185 | CpuDeadLoop ();\r | |
186 | }\r | |
187 | \r | |
188 | /**\r | |
189 | This service of the TEMPORARY_RAM_SUPPORT_PPI that migrates temporary RAM into\r | |
190 | permanent memory.\r | |
191 | \r | |
192 | @param[in] PeiServices Pointer to the PEI Services Table.\r | |
193 | @param[in] TemporaryMemoryBase Source Address in temporary memory from which the SEC or PEIM will copy the\r | |
194 | Temporary RAM contents.\r | |
195 | @param[in] PermanentMemoryBase Destination Address in permanent memory into which the SEC or PEIM will copy the\r | |
196 | Temporary RAM contents.\r | |
197 | @param[in] CopySize Amount of memory to migrate from temporary to permanent memory.\r | |
198 | \r | |
199 | @retval EFI_SUCCESS The data was successfully returned.\r | |
200 | @retval EFI_INVALID_PARAMETER PermanentMemoryBase + CopySize > TemporaryMemoryBase when\r | |
201 | TemporaryMemoryBase > PermanentMemoryBase.\r | |
202 | \r | |
203 | **/\r | |
204 | EFI_STATUS\r | |
205 | EFIAPI\r | |
206 | SecTemporaryRamSupport (\r | |
207 | IN CONST EFI_PEI_SERVICES **PeiServices,\r | |
208 | IN EFI_PHYSICAL_ADDRESS TemporaryMemoryBase,\r | |
209 | IN EFI_PHYSICAL_ADDRESS PermanentMemoryBase,\r | |
210 | IN UINTN CopySize\r | |
211 | )\r | |
212 | {\r | |
213 | IA32_DESCRIPTOR IdtDescriptor;\r | |
214 | VOID* OldHeap;\r | |
215 | VOID* NewHeap;\r | |
216 | VOID* OldStack;\r | |
217 | VOID* NewStack;\r | |
218 | UINTN HeapSize;\r | |
219 | UINTN StackSize;\r | |
220 | \r | |
12a0a80b CC |
221 | UINTN CurrentStack;\r |
222 | UINTN FspStackBase;\r | |
223 | \r | |
f2cdb268 CC |
224 | //\r |
225 | // Override OnSeparateStack to 1 because this function will switch stack to permanent memory\r | |
226 | // which makes FSP running on different stack from bootloader temporary ram stack.\r | |
227 | //\r | |
228 | GetFspGlobalDataPointer ()->OnSeparateStack = 1;\r | |
229 | \r | |
12a0a80b CC |
230 | if (PcdGet8 (PcdFspHeapSizePercentage) == 0) {\r |
231 | \r | |
232 | CurrentStack = AsmReadEsp();\r | |
233 | FspStackBase = (UINTN)GetFspEntryStack();\r | |
e37bb20c | 234 | \r |
12a0a80b CC |
235 | StackSize = FspStackBase - CurrentStack;\r |
236 | HeapSize = CopySize;\r | |
cf1d4549 | 237 | \r |
12a0a80b CC |
238 | OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r |
239 | NewHeap = (VOID*)((UINTN)PermanentMemoryBase);\r | |
cf1d4549 | 240 | \r |
12a0a80b CC |
241 | OldStack = (VOID*)CurrentStack;\r |
242 | //\r | |
243 | //The old stack is copied at the end of the stack region because stack grows down.\r | |
244 | //\r | |
245 | NewStack = (VOID*)((UINTN)PermanentMemoryBase - StackSize);\r | |
246 | \r | |
247 | } else {\r | |
248 | HeapSize = CopySize * PcdGet8 (PcdFspHeapSizePercentage) / 100 ;\r | |
249 | StackSize = CopySize - HeapSize;\r | |
250 | \r | |
251 | OldHeap = (VOID*)(UINTN)TemporaryMemoryBase;\r | |
252 | NewHeap = (VOID*)((UINTN)PermanentMemoryBase + StackSize);\r | |
253 | \r | |
254 | OldStack = (VOID*)((UINTN)TemporaryMemoryBase + HeapSize);\r | |
255 | NewStack = (VOID*)(UINTN)PermanentMemoryBase;\r | |
256 | \r | |
257 | }\r | |
cf1d4549 JY |
258 | //\r |
259 | // Migrate Heap\r | |
260 | //\r | |
261 | CopyMem (NewHeap, OldHeap, HeapSize);\r | |
262 | \r | |
263 | //\r | |
264 | // Migrate Stack\r | |
265 | //\r | |
266 | CopyMem (NewStack, OldStack, StackSize);\r | |
267 | \r | |
268 | \r | |
269 | //\r | |
270 | // We need *not* fix the return address because currently,\r | |
271 | // The PeiCore is executed in flash.\r | |
272 | //\r | |
273 | \r | |
274 | //\r | |
275 | // Rebase IDT table in permanent memory\r | |
276 | //\r | |
277 | AsmReadIdtr (&IdtDescriptor);\r | |
278 | IdtDescriptor.Base = IdtDescriptor.Base - (UINTN)OldStack + (UINTN)NewStack;\r | |
279 | \r | |
280 | AsmWriteIdtr (&IdtDescriptor);\r | |
281 | \r | |
282 | //\r | |
283 | // Fixed the FSP data pointer\r | |
284 | //\r | |
285 | FspDataPointerFixUp ((UINTN)NewStack - (UINTN)OldStack);\r | |
286 | \r | |
287 | //\r | |
288 | // SecSwitchStack function must be invoked after the memory migration\r | |
058dcbf2 GL |
289 | // immediately, also we need fixup the stack change caused by new call into\r |
290 | // permanent memory.\r | |
cf1d4549 JY |
291 | //\r |
292 | SecSwitchStack (\r | |
293 | (UINT32) (UINTN) OldStack,\r | |
294 | (UINT32) (UINTN) NewStack\r | |
295 | );\r | |
296 | \r | |
297 | return EFI_SUCCESS;\r | |
298 | }\r |