924336b22d47025d9b8e16839f04afc3285767e5
[mirror_edk2.git] / EdkModulePkg / Core / Pei / PeiMain / PeiMain.c
1 /*++
2
3 Copyright (c) 2006, Intel Corporation
4 All rights reserved. This program and the accompanying materials
5 are licensed and made available under the terms and conditions of the BSD License
6 which accompanies this distribution. The full text of the license may be found at
7 http://opensource.org/licenses/bsd-license.php
8
9 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
10 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
11
12 Module Name:
13
14 PeiMain.c
15
16 Abstract:
17
18 Pei Core Main Entry Point
19
20 Revision History
21
22 --*/
23
24 #include <PeiMain.h>
25
26 //
27 //CAR is filled with this initial value during SEC phase
28 //
29 #define INIT_CAR_VALUE 0x5AA55AA5
30
31 static EFI_PEI_PPI_DESCRIPTOR mMemoryDiscoveredPpi = {
32 (EFI_PEI_PPI_DESCRIPTOR_PPI | EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST),
33 &gEfiPeiMemoryDiscoveredPpiGuid,
34 NULL
35 };
36
37 //
38 // Pei Core Module Variables
39 //
40 //
41 static EFI_PEI_SERVICES mPS = {
42 {
43 PEI_SERVICES_SIGNATURE,
44 PEI_SERVICES_REVISION,
45 sizeof (EFI_PEI_SERVICES),
46 0,
47 0
48 },
49 PeiInstallPpi,
50 PeiReInstallPpi,
51 PeiLocatePpi,
52 PeiNotifyPpi,
53
54 PeiGetBootMode,
55 PeiSetBootMode,
56
57 PeiGetHobList,
58 PeiCreateHob,
59
60 PeiFvFindNextVolume,
61 PeiFfsFindNextFile,
62 PeiFfsFindSectionData,
63
64 PeiInstallPeiMemory,
65 PeiAllocatePages,
66 PeiAllocatePool,
67 (EFI_PEI_COPY_MEM)CopyMem,
68 (EFI_PEI_SET_MEM)SetMem,
69
70 PeiReportStatusCode,
71
72 PeiResetSystem
73 };
74
75 EFI_STATUS
76 EFIAPI
77 PeiCore (
78 IN EFI_PEI_STARTUP_DESCRIPTOR *PeiStartupDescriptor,
79 IN PEI_CORE_INSTANCE *OldCoreData
80 )
81 /*++
82
83 Routine Description:
84
85 The entry routine to Pei Core, invoked by PeiMain during transition
86 from SEC to PEI. After switching stack in the PEI core, it will restart
87 with the old core data.
88
89 Arguments:
90
91 PeiStartupDescriptor - Information and services provided by SEC phase.
92 OldCoreData - Pointer to old core data that is used to initialize the
93 core's data areas.
94
95 Returns:
96
97 This function never returns
98 EFI_NOT_FOUND - Never reach
99
100 --*/
101 {
102 PEI_CORE_INSTANCE PrivateData;
103 EFI_STATUS Status;
104 PEI_CORE_TEMP_POINTERS TempPtr;
105 PEI_CORE_DISPATCH_DATA *DispatchData;
106 UINT64 mTick;
107
108 mTick = 0;
109
110 if (PerformanceMeasurementEnabled()) {
111 if (OldCoreData == NULL) {
112 mTick = GetPerformanceCounter ();
113 }
114 }
115
116 //
117 // For IPF in CAR mode the real memory access is uncached,in InstallPeiMemory()
118 // the 63-bit of address is set to 1.
119 //
120 SWITCH_TO_CACHE_MODE (OldCoreData);
121
122 if (OldCoreData != NULL) {
123 CopyMem (&PrivateData, OldCoreData, sizeof (PEI_CORE_INSTANCE));
124 } else {
125 ZeroMem (&PrivateData, sizeof (PEI_CORE_INSTANCE));
126 }
127
128 PrivateData.Signature = PEI_CORE_HANDLE_SIGNATURE;
129 PrivateData.PS = &mPS;
130
131 //
132 // Initialize libraries that the PeiCore is linked against
133 // BUGBUG: The FfsHeader is passed in as NULL. Do we look it up or remove it from the lib init?
134 //
135 ProcessLibraryConstructorList (NULL, &PrivateData.PS);
136
137 InitializeMemoryServices (&PrivateData.PS, PeiStartupDescriptor, OldCoreData);
138
139 InitializePpiServices (&PrivateData.PS, OldCoreData);
140
141 InitializeSecurityServices (&PrivateData.PS, OldCoreData);
142
143 InitializeDispatcherData (&PrivateData.PS, OldCoreData, PeiStartupDescriptor);
144
145 if (OldCoreData != NULL) {
146
147 PERF_END (NULL,"PreMem", NULL, 0);
148 PERF_START (NULL,"PostMem", NULL, 0);
149
150 //
151 // The following code dumps out interesting cache as RAM usage information
152 // so we can keep tabs on how the cache as RAM is being utilized. The
153 // DEBUG_CODE_BEGIN macro is used to prevent this code from being compiled
154 // on a debug build.
155 //
156 DEBUG_CODE_BEGIN ();
157 UINTN *StackPointer;
158 UINTN StackValue;
159
160 StackValue = INIT_CAR_VALUE;
161 for (StackPointer = (UINTN *) OldCoreData->MaxTopOfCarHeap;
162 ((UINTN) StackPointer < ((UINTN) OldCoreData->BottomOfCarHeap + OldCoreData->SizeOfCacheAsRam))
163 && StackValue == INIT_CAR_VALUE;
164 StackPointer++) {
165 StackValue = *StackPointer;
166 }
167
168 DEBUG ((EFI_D_INFO, "Total Cache as RAM: %d bytes.\n", OldCoreData->SizeOfCacheAsRam));
169 DEBUG ((EFI_D_INFO, " CAR stack ever used: %d bytes.\n",
170 ((UINTN) OldCoreData->TopOfCarHeap - (UINTN) StackPointer)
171 ));
172 DEBUG ((EFI_D_INFO, " CAR heap used: %d bytes.\n",
173 ((UINTN) OldCoreData->HobList.HandoffInformationTable->EfiFreeMemoryBottom -
174 (UINTN) OldCoreData->HobList.Raw)
175 ));
176 DEBUG_CODE_END ();
177
178 //
179 // Alert any listeners that there is permanent memory available
180 //
181 PERF_START (NULL,"PEI", NULL, mTick);
182 PERF_START (NULL,"DisMem", NULL, 0);
183 Status = PeiServicesInstallPpi (&mMemoryDiscoveredPpi);
184 PERF_END (NULL,"DisMem", NULL, 0);
185
186 } else {
187
188 //
189 // Report Status Code EFI_SW_PC_INIT
190 //
191 REPORT_STATUS_CODE (
192 EFI_PROGRESS_CODE,
193 EFI_SOFTWARE_PEI_CORE | EFI_SW_PC_INIT
194 );
195
196 //
197 // If first pass, start performance measurement.
198 //
199 PERF_START (NULL,"PreMem", NULL, mTick);
200
201 //
202 // If SEC provided any PPI services to PEI, install them.
203 //
204 if (PeiStartupDescriptor->DispatchTable != NULL) {
205 Status = PeiServicesInstallPpi (PeiStartupDescriptor->DispatchTable);
206 ASSERT_EFI_ERROR (Status);
207 }
208 }
209
210 DispatchData = &PrivateData.DispatchData;
211
212 //
213 // Call PEIM dispatcher
214 //
215 PeiDispatcher (PeiStartupDescriptor, &PrivateData, DispatchData);
216
217 //
218 // Check if InstallPeiMemory service was called.
219 //
220 ASSERT(PrivateData.PeiMemoryInstalled == TRUE);
221
222 PERF_END (NULL, "PostMem", NULL, 0);
223
224 Status = PeiServicesLocatePpi (
225 &gEfiDxeIplPpiGuid,
226 0,
227 NULL,
228 (VOID **)&TempPtr.DxeIpl
229 );
230 ASSERT_EFI_ERROR (Status);
231
232 DEBUG ((EFI_D_INFO, "DXE IPL Entry\n"));
233 Status = TempPtr.DxeIpl->Entry (
234 TempPtr.DxeIpl,
235 &PrivateData.PS,
236 PrivateData.HobList
237 );
238
239 ASSERT_EFI_ERROR (Status);
240
241 return EFI_NOT_FOUND;
242 }
243