MdeModulePkg/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   PeiResetSystem,
  72
  73   NULL,
  74   NULL,
  75
  76   PeiFfsFindFileByName,
  77   PeiFfsGetFileInfo,
  78   PeiFfsGetVolumeInfo,
  79   PeiRegisterForShadow
  80 };
  81
  82 EFI_STATUS
  83 EFIAPI
  84 PeiCore (
  85   IN CONST EFI_SEC_PEI_HAND_OFF        *SecCoreData,
  86   IN CONST EFI_PEI_PPI_DESCRIPTOR      *PpList,
  87   IN VOID                              *Data
  88   )
  89 /*++
  90
  91 Routine Description:
  92
  93   The entry routine to Pei Core, invoked by PeiMain during transition
  94   from SEC to PEI. After switching stack in the PEI core, it will restart
  95   with the old core data.
  96
  97 Arguments:
  98
  99   SecCoreData          - Points to a data structure containing information about the PEI core's operating
 100                          environment, such as the size and location of temporary RAM, the stack location and
 101                          the BFV location.
 102   PpiList              - Points to a list of one or more PPI descriptors to be installed initially by the PEI core.
 103                          An empty PPI list consists of a single descriptor with the end-tag
 104                          EFI_PEI_PPI_DESCRIPTOR_TERMINATE_LIST. As part of its initialization
 105                          phase, the PEI Foundation will add these SEC-hosted PPIs to its PPI database such
 106                          that both the PEI Foundation and any modules can leverage the associated service
 107                          calls and/or code in these early PPIs
 108   Data                 - Pointer to old core data that is used to initialize the
 109                          core's data areas.
 110
 111 Returns:
 112
 113   This function never returns
 114   EFI_NOT_FOUND        - Never reach
 115
 116 --*/
 117 {
 118   PEI_CORE_INSTANCE                                     PrivateData;
 119   EFI_STATUS                                            Status;
 120   PEI_CORE_TEMP_POINTERS                                TempPtr;
 121   UINT64                                                mTick;
 122   PEI_CORE_INSTANCE                                     *OldCoreData;
 123   EFI_PEI_CPU_IO_PPI                                    *CpuIo;
 124   EFI_PEI_PCI_CFG2_PPI                                  *PciCfg;
 125
 126   mTick = 0;
 127   OldCoreData = (PEI_CORE_INSTANCE *) Data;
 128
 129   if (PerformanceMeasurementEnabled()) {
 130     if (OldCoreData == NULL) {
 131       mTick = GetPerformanceCounter ();
 132     }
 133   }
 134
 135   //
 136   // For IPF in CAR mode the real memory access is uncached,in InstallPeiMemory()
 137   //  the 63-bit of address is set to 1.
 138   //
 139   SWITCH_TO_CACHE_MODE (OldCoreData);
 140
 141   if (OldCoreData != NULL) {
 142     CopyMem (&PrivateData, OldCoreData, sizeof (PEI_CORE_INSTANCE));
 143
 144     CpuIo = (VOID*)PrivateData.ServiceTableShadow.CpuIo;
 145     PciCfg = (VOID*)PrivateData.ServiceTableShadow.PciCfg;
 146
 147     CopyMem (&PrivateData.ServiceTableShadow, &mPS, sizeof (mPS));
 148
 149     PrivateData.ServiceTableShadow.CpuIo  = CpuIo;
 150     PrivateData.ServiceTableShadow.PciCfg = PciCfg;
 151   } else {
 152     ZeroMem (&PrivateData, sizeof (PEI_CORE_INSTANCE));
 153     PrivateData.Signature = PEI_CORE_HANDLE_SIGNATURE;
 154     CopyMem (&PrivateData.ServiceTableShadow, &mPS, sizeof (mPS));
 155   }
 156
 157   PrivateData.PS = &PrivateData.ServiceTableShadow;
 158
 159   //
 160   // Initialize libraries that the PeiCore is linked against
 161   // BUGBUG: The FileHandle is passed in as NULL.  Do we look it up or remove it from the lib init?
 162   //
 163   ProcessLibraryConstructorList (NULL, &PrivateData.PS);
 164
 165   InitializeMemoryServices (&PrivateData, SecCoreData, OldCoreData);
 166
 167   InitializePpiServices (&PrivateData, OldCoreData);
 168
 169   if (OldCoreData != NULL) {
 170
 171     PERF_END (NULL,"PreMem", NULL, 0);
 172     PERF_START (NULL,"PostMem", NULL, 0);
 173
 174     //
 175     // The following code dumps out interesting cache as RAM usage information
 176     // so we can keep tabs on how the cache as RAM is being utilized.  The
 177     // DEBUG_CODE_BEGIN macro is used to prevent this code from being compiled
 178     // on a debug build.
 179     //
 180     DEBUG_CODE_BEGIN ();
 181       UINTN  *StackPointer;
 182       UINTN  StackValue;
 183
 184       StackValue = INIT_CAR_VALUE;
 185       for (StackPointer = (UINTN *) OldCoreData->MaxTopOfCarHeap;
 186            ((UINTN) StackPointer < ((UINTN) OldCoreData->BottomOfCarHeap + OldCoreData->SizeOfCacheAsRam))
 187            && StackValue == INIT_CAR_VALUE;
 188            StackPointer++) {
 189         StackValue = *StackPointer;
 190       }
 191
 192       DEBUG ((EFI_D_INFO, "Total Cache as RAM:    %d bytes.\n", OldCoreData->SizeOfCacheAsRam));
 193       DEBUG ((EFI_D_INFO, "  CAR stack ever used: %d bytes.\n",
 194         ((UINTN) OldCoreData->TopOfCarHeap - (UINTN) StackPointer)
 195         ));
 196       DEBUG ((EFI_D_INFO, "  CAR heap used:       %d bytes.\n",
 197         ((UINTN) OldCoreData->HobList.HandoffInformationTable->EfiFreeMemoryBottom -
 198         (UINTN) OldCoreData->HobList.Raw)
 199         ));
 200     DEBUG_CODE_END ();
 201
 202     //
 203     // Alert any listeners that there is permanent memory available
 204     //
 205
 206     PERF_START (NULL,"DisMem", NULL, 0);
 207     Status = PeiServicesInstallPpi (&mMemoryDiscoveredPpi);
 208     PERF_END (NULL,"DisMem", NULL, 0);
 209
 210   } else {
 211
 212     //
 213     // Report Status Code EFI_SW_PC_INIT
 214     //
 215     REPORT_STATUS_CODE (
 216       EFI_PROGRESS_CODE,
 217       EFI_SOFTWARE_PEI_CORE | EFI_SW_PC_INIT
 218       );
 219
 220     PERF_START (NULL,"PEI", NULL, mTick);
 221     //
 222     // If first pass, start performance measurement.
 223     //
 224     PERF_START (NULL,"PreMem", NULL, mTick);
 225
 226     //
 227     // If SEC provided any PPI services to PEI, install them.
 228     //
 229     if (PpList != NULL) {
 230       Status = PeiServicesInstallPpi (PpList);
 231       ASSERT_EFI_ERROR (Status);
 232     }
 233   }
 234
 235   InitializeSecurityServices (&PrivateData.PS, OldCoreData);
 236
 237   InitializeDispatcherData (&PrivateData, OldCoreData, SecCoreData);
 238
 239   //
 240   // Install Pei Load File PPI.
 241   //
 242   InitializeImageServices (&PrivateData, OldCoreData);
 243
 244   //
 245   // Call PEIM dispatcher
 246   //
 247   PeiDispatcher (SecCoreData, &PrivateData);
 248
 249   //
 250   // Check if InstallPeiMemory service was called.
 251   //
 252   ASSERT(PrivateData.PeiMemoryInstalled == TRUE);
 253
 254   PERF_END (NULL, "PostMem", NULL, 0);
 255
 256   Status = PeiServicesLocatePpi (
 257              &gEfiDxeIplPpiGuid,
 258              0,
 259              NULL,
 260              (VOID **)&TempPtr.DxeIpl
 261              );
 262   ASSERT_EFI_ERROR (Status);
 263
 264   DEBUG ((EFI_D_INFO, "DXE IPL Entry\n"));
 265   Status = TempPtr.DxeIpl->Entry (
 266                              TempPtr.DxeIpl,
 267                              &PrivateData.PS,
 268                              PrivateData.HobList
 269                              );
 270
 271   ASSERT_EFI_ERROR (Status);
 272
 273   return EFI_NOT_FOUND;
 274 }
 275