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1 | /*++\r | |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation\r | |
4 | All rights reserved. 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 | Module Name:\r | |
13 | \r | |
14 | PeiMain.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Pei Core Main Entry Point\r | |
19 | \r | |
20 | Revision History\r | |
21 | \r | |
22 | --*/\r | |
23 | \r | |
24 | #include <PeiMain.h>\r | |
25 | \r | |
26 | //\r | |
27 | //CAR is filled with this initial value during SEC phase\r | |
28 | //\r | |
29 | #define INIT_CAR_VALUE 0x5AA55AA5\r | |
30 | \r | |
31 | static EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {\r | |
32 | (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),\r | |
33 | &gEfiPeiMemoryDiscoveredPpiGuid,\r | |
34 | NULL\r | |
35 | };\r | |
36 | \r | |
37 | //\r | |
38 | // Pei Core Module Variables\r | |
39 | //\r | |
40 | //\r | |
41 | static EFI_PEI_SERVICES mPS = {\r | |
42 | {\r | |
43 | PEI_SERVICES_SIGNATURE,\r | |
44 | PEI_SERVICES_REVISION,\r | |
45 | sizeof (EFI_PEI_SERVICES),\r | |
46 | 0,\r | |
47 | 0\r | |
48 | },\r | |
49 | PeiInstallPpi,\r | |
50 | PeiReInstallPpi,\r | |
51 | PeiLocatePpi,\r | |
52 | PeiNotifyPpi,\r | |
53 | \r | |
54 | PeiGetBootMode,\r | |
55 | PeiSetBootMode,\r | |
56 | \r | |
57 | PeiGetHobList,\r | |
58 | PeiCreateHob,\r | |
59 | \r | |
60 | PeiFvFindNextVolume,\r | |
61 | PeiFfsFindNextFile,\r | |
62 | PeiFfsFindSectionData,\r | |
63 | \r | |
64 | PeiInstallPeiMemory,\r | |
65 | PeiAllocatePages,\r | |
66 | PeiAllocatePool,\r | |
67 | (EFI_PEI_COPY_MEM)CopyMem,\r | |
68 | (EFI_PEI_SET_MEM)SetMem,\r | |
69 | \r | |
70 | PeiReportStatusCode,\r | |
71 | \r | |
72 | PeiResetSystem,\r | |
73 | NULL,\r | |
74 | NULL,\r | |
75 | NULL,\r | |
76 | NULL,\r | |
77 | NULL,\r | |
78 | PeiRegisterForShadow\r | |
79 | };\r | |
80 | \r | |
81 | EFI_STATUS\r | |
82 | EFIAPI\r | |
83 | PeiCore (\r | |
84 | IN CONST EFI_SEC_PEI_HAND_OFF *SecCoreData,\r | |
85 | IN CONST EFI_PEI_PPI_DESCRIPTOR *PpList,\r | |
86 | IN VOID *Data\r | |
87 | )\r | |
88 | /*++\r | |
89 | \r | |
90 | Routine Description:\r | |
91 | \r | |
92 | The entry routine to Pei Core, invoked by PeiMain during transition\r | |
93 | from SEC to PEI. After switching stack in the PEI core, it will restart\r | |
94 | with the old core data.\r | |
95 | \r | |
96 | Arguments:\r | |
97 | \r | |
98 | SecCoreData - Points to a data structure containing information about the PEI core's operating\r | |
99 | environment, such as the size and location of temporary RAM, the stack location and\r | |
100 | the BFV location.\r | |
101 | PpiList - Points to a list of one or more PPI descriptors to be installed initially by the PEI core.\r | |
102 | An empty PPI list consists of a single descriptor with the end-tag\r | |
103 | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization\r | |
104 | phase, the PEI Foundation will add these SEC-hosted PPIs to its PPI database such\r | |
105 | that both the PEI Foundation and any modules can leverage the associated service\r | |
106 | calls and/or code in these early PPIs\r | |
107 | Data - Pointer to old core data that is used to initialize the\r | |
108 | core's data areas.\r | |
109 | \r | |
110 | Returns:\r | |
111 | \r | |
112 | This function never returns\r | |
113 | EFI_NOT_FOUND - Never reach\r | |
114 | \r | |
115 | --*/\r | |
116 | {\r | |
117 | PEI_CORE_INSTANCE PrivateData;\r | |
118 | EFI_STATUS Status;\r | |
119 | PEI_CORE_TEMP_POINTERS TempPtr;\r | |
120 | PEI_CORE_DISPATCH_DATA *DispatchData;\r | |
121 | UINT64 mTick;\r | |
122 | PEI_CORE_INSTANCE *OldCoreData;\r | |
123 | \r | |
124 | mTick = 0;\r | |
125 | OldCoreData = (PEI_CORE_INSTANCE *) Data;\r | |
126 | \r | |
127 | if (PerformanceMeasurementEnabled()) {\r | |
128 | if (OldCoreData == NULL) {\r | |
129 | mTick = GetPerformanceCounter ();\r | |
130 | }\r | |
131 | }\r | |
132 | \r | |
133 | //\r | |
134 | // For IPF in CAR mode the real memory access is uncached,in InstallPeiMemory()\r | |
135 | // the 63-bit of address is set to 1.\r | |
136 | //\r | |
137 | SWITCH_TO_CACHE_MODE (OldCoreData);\r | |
138 | \r | |
139 | if (OldCoreData != NULL) {\r | |
140 | CopyMem (&PrivateData, OldCoreData, sizeof (PEI_CORE_INSTANCE));\r | |
141 | } else {\r | |
142 | ZeroMem (&PrivateData, sizeof (PEI_CORE_INSTANCE));\r | |
143 | }\r | |
144 | \r | |
145 | PrivateData.Signature = PEI_CORE_HANDLE_SIGNATURE;\r | |
146 | PrivateData.PS = &mPS;\r | |
147 | \r | |
148 | //\r | |
149 | // Initialize libraries that the PeiCore is linked against\r | |
150 | // BUGBUG: The FfsHeader is passed in as NULL. Do we look it up or remove it from the lib init?\r | |
151 | //\r | |
152 | ProcessLibraryConstructorList (NULL, &PrivateData.PS);\r | |
153 | \r | |
154 | InitializeMemoryServices (&PrivateData.PS, SecCoreData, OldCoreData);\r | |
155 | \r | |
156 | InitializePpiServices (&PrivateData.PS, OldCoreData);\r | |
157 | \r | |
158 | InitializeSecurityServices (&PrivateData.PS, OldCoreData);\r | |
159 | \r | |
160 | InitializeDispatcherData (&PrivateData.PS, OldCoreData, SecCoreData);\r | |
161 | \r | |
162 | if (OldCoreData != NULL) {\r | |
163 | \r | |
164 | PERF_END (NULL,"PreMem", NULL, 0);\r | |
165 | PERF_START (NULL,"PostMem", NULL, 0);\r | |
166 | \r | |
167 | //\r | |
168 | // The following code dumps out interesting cache as RAM usage information\r | |
169 | // so we can keep tabs on how the cache as RAM is being utilized. The\r | |
170 | // DEBUG_CODE_BEGIN macro is used to prevent this code from being compiled\r | |
171 | // on a debug build.\r | |
172 | //\r | |
173 | DEBUG_CODE_BEGIN ();\r | |
174 | UINTN *StackPointer;\r | |
175 | UINTN StackValue;\r | |
176 | \r | |
177 | StackValue = INIT_CAR_VALUE;\r | |
178 | for (StackPointer = (UINTN *) OldCoreData->MaxTopOfCarHeap;\r | |
179 | ((UINTN) StackPointer < ((UINTN) OldCoreData->BottomOfCarHeap + OldCoreData->SizeOfCacheAsRam))\r | |
180 | && StackValue == INIT_CAR_VALUE;\r | |
181 | StackPointer++) {\r | |
182 | StackValue = *StackPointer;\r | |
183 | }\r | |
184 | \r | |
185 | DEBUG ((EFI_D_INFO, "Total Cache as RAM: %d bytes.\n", OldCoreData->SizeOfCacheAsRam));\r | |
186 | DEBUG ((EFI_D_INFO, " CAR stack ever used: %d bytes.\n",\r | |
187 | ((UINTN) OldCoreData->TopOfCarHeap - (UINTN) StackPointer)\r | |
188 | ));\r | |
189 | DEBUG ((EFI_D_INFO, " CAR heap used: %d bytes.\n",\r | |
190 | ((UINTN) OldCoreData->HobList.HandoffInformationTable->EfiFreeMemoryBottom -\r | |
191 | (UINTN) OldCoreData->HobList.Raw)\r | |
192 | ));\r | |
193 | DEBUG_CODE_END ();\r | |
194 | \r | |
195 | //\r | |
196 | // Alert any listeners that there is permanent memory available\r | |
197 | //\r | |
198 | \r | |
199 | PERF_START (NULL,"DisMem", NULL, 0);\r | |
200 | Status = PeiServicesInstallPpi (&mMemoryDiscoveredPpi);\r | |
201 | PERF_END (NULL,"DisMem", NULL, 0);\r | |
202 | \r | |
203 | } else {\r | |
204 | \r | |
205 | //\r | |
206 | // Report Status Code EFI_SW_PC_INIT\r | |
207 | //\r | |
208 | REPORT_STATUS_CODE (\r | |
209 | EFI_PROGRESS_CODE,\r | |
210 | EFI_SOFTWARE_PEI_CORE | EFI_SW_PC_INIT\r | |
211 | );\r | |
212 | \r | |
213 | PERF_START (NULL,"PEI", NULL, mTick);\r | |
214 | //\r | |
215 | // If first pass, start performance measurement.\r | |
216 | //\r | |
217 | PERF_START (NULL,"PreMem", NULL, mTick);\r | |
218 | \r | |
219 | //\r | |
220 | // If SEC provided any PPI services to PEI, install them.\r | |
221 | //\r | |
222 | if (PpList != NULL) {\r | |
223 | Status = PeiServicesInstallPpi (PpList);\r | |
224 | ASSERT_EFI_ERROR (Status);\r | |
225 | }\r | |
226 | }\r | |
227 | \r | |
228 | DispatchData = &PrivateData.DispatchData;\r | |
229 | \r | |
230 | //\r | |
231 | // Call PEIM dispatcher\r | |
232 | //\r | |
233 | PeiDispatcher (SecCoreData, &PrivateData, DispatchData);\r | |
234 | \r | |
235 | //\r | |
236 | // Check if InstallPeiMemory service was called.\r | |
237 | //\r | |
238 | ASSERT(PrivateData.PeiMemoryInstalled == TRUE);\r | |
239 | \r | |
240 | PERF_END (NULL, "PostMem", NULL, 0);\r | |
241 | \r | |
242 | Status = PeiServicesLocatePpi (\r | |
243 | &gEfiDxeIplPpiGuid,\r | |
244 | 0,\r | |
245 | NULL,\r | |
246 | (VOID **)&TempPtr.DxeIpl\r | |
247 | );\r | |
248 | ASSERT_EFI_ERROR (Status);\r | |
249 | \r | |
250 | DEBUG ((EFI_D_INFO, "DXE IPL Entry\n"));\r | |
251 | Status = TempPtr.DxeIpl->Entry (\r | |
252 | TempPtr.DxeIpl,\r | |
253 | &PrivateData.PS,\r | |
254 | PrivateData.HobList\r | |
255 | );\r | |
256 | \r | |
257 | ASSERT_EFI_ERROR (Status);\r | |
258 | \r | |
259 | return EFI_NOT_FOUND;\r | |
260 | }\r | |
261 | \r |