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 VOID                        *Data
  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   PEI_CORE_INSTANCE                                     *OldCoreData;
 108
 109   mTick = 0;
 110   OldCoreData = (PEI_CORE_INSTANCE *) Data;
 111
 112   if (PerformanceMeasurementEnabled()) {
 113     if (OldCoreData == NULL) {
 114       mTick = GetPerformanceCounter ();
 115     }
 116   }
 117
 118   //
 119   // For IPF in CAR mode the real memory access is uncached,in InstallPeiMemory()
 120   //  the 63-bit of address is set to 1.
 121   //
 122   SWITCH_TO_CACHE_MODE (OldCoreData);
 123
 124   if (OldCoreData != NULL) {
 125     CopyMem (&PrivateData, OldCoreData, sizeof (PEI_CORE_INSTANCE));
 126   } else {
 127     ZeroMem (&PrivateData, sizeof (PEI_CORE_INSTANCE));
 128   }
 129
 130   PrivateData.Signature = PEI_CORE_HANDLE_SIGNATURE;
 131   PrivateData.PS = &mPS;
 132
 133   //
 134   // Initialize libraries that the PeiCore is linked against
 135   // BUGBUG: The FfsHeader is passed in as NULL.  Do we look it up or remove it from the lib init?
 136   //
 137   ProcessLibraryConstructorList (NULL, &PrivateData.PS);
 138
 139   InitializeMemoryServices (&PrivateData.PS, PeiStartupDescriptor, OldCoreData);
 140
 141   InitializePpiServices (&PrivateData.PS, OldCoreData);
 142
 143   InitializeSecurityServices (&PrivateData.PS, OldCoreData);
 144
 145   InitializeDispatcherData (&PrivateData.PS, OldCoreData, PeiStartupDescriptor);
 146
 147   if (OldCoreData != NULL) {
 148
 149     PERF_END (NULL,"PreMem", NULL, 0);
 150     PERF_START (NULL,"PostMem", NULL, 0);
 151
 152     //
 153     // The following code dumps out interesting cache as RAM usage information
 154     // so we can keep tabs on how the cache as RAM is being utilized.  The
 155     // DEBUG_CODE_BEGIN macro is used to prevent this code from being compiled
 156     // on a debug build.
 157     //
 158     DEBUG_CODE_BEGIN ();
 159       UINTN  *StackPointer;
 160       UINTN  StackValue;
 161
 162       StackValue = INIT_CAR_VALUE;
 163       for (StackPointer = (UINTN *) OldCoreData->MaxTopOfCarHeap;
 164            ((UINTN) StackPointer < ((UINTN) OldCoreData->BottomOfCarHeap + OldCoreData->SizeOfCacheAsRam))
 165            && StackValue == INIT_CAR_VALUE;
 166            StackPointer++) {
 167         StackValue = *StackPointer;
 168       }
 169
 170       DEBUG ((EFI_D_INFO, "Total Cache as RAM:    %d bytes.\n", OldCoreData->SizeOfCacheAsRam));
 171       DEBUG ((EFI_D_INFO, "  CAR stack ever used: %d bytes.\n",
 172         ((UINTN) OldCoreData->TopOfCarHeap - (UINTN) StackPointer)
 173         ));
 174       DEBUG ((EFI_D_INFO, "  CAR heap used:       %d bytes.\n",
 175         ((UINTN) OldCoreData->HobList.HandoffInformationTable->EfiFreeMemoryBottom -
 176         (UINTN) OldCoreData->HobList.Raw)
 177         ));
 178     DEBUG_CODE_END ();
 179
 180     //
 181     // Alert any listeners that there is permanent memory available
 182     //
 183
 184     PERF_START (NULL,"DisMem", NULL, 0);
 185     Status = PeiServicesInstallPpi (&mMemoryDiscoveredPpi);
 186     PERF_END (NULL,"DisMem", NULL, 0);
 187
 188   } else {
 189
 190     //
 191     // Report Status Code EFI_SW_PC_INIT
 192     //
 193     REPORT_STATUS_CODE (
 194       EFI_PROGRESS_CODE,
 195       EFI_SOFTWARE_PEI_CORE | EFI_SW_PC_INIT
 196       );
 197
 198     PERF_START (NULL,"PEI", NULL, mTick);
 199     //
 200     // If first pass, start performance measurement.
 201     //
 202     PERF_START (NULL,"PreMem", NULL, mTick);
 203
 204     //
 205     // If SEC provided any PPI services to PEI, install them.
 206     //
 207     if (PeiStartupDescriptor->DispatchTable != NULL) {
 208       Status = PeiServicesInstallPpi (PeiStartupDescriptor->DispatchTable);
 209       ASSERT_EFI_ERROR (Status);
 210     }
 211   }
 212
 213   DispatchData = &PrivateData.DispatchData;
 214
 215   //
 216   // Call PEIM dispatcher
 217   //
 218   PeiDispatcher (PeiStartupDescriptor, &PrivateData, DispatchData);
 219
 220   //
 221   // Check if InstallPeiMemory service was called.
 222   //
 223   ASSERT(PrivateData.PeiMemoryInstalled == TRUE);
 224
 225   PERF_END (NULL, "PostMem", NULL, 0);
 226
 227   Status = PeiServicesLocatePpi (
 228              &gEfiDxeIplPpiGuid,
 229              0,
 230              NULL,
 231              (VOID **)&TempPtr.DxeIpl
 232              );
 233   ASSERT_EFI_ERROR (Status);
 234
 235   DEBUG ((EFI_D_INFO, "DXE IPL Entry\n"));
 236   Status = TempPtr.DxeIpl->Entry (
 237                              TempPtr.DxeIpl,
 238                              &PrivateData.PS,
 239                              PrivateData.HobList
 240                              );
 241
 242   ASSERT_EFI_ERROR (Status);
 243
 244   return EFI_NOT_FOUND;
 245 }
 246