ArmPkg/Drivers/CpuPei/CpuPei.c

   1 /**@file
   2
   3 Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
   4 Copyright (c) 2011 Hewlett Packard Corporation. All rights reserved.<BR>
   5 Copyright (c) 2011-2013, ARM Limited. All rights reserved.<BR>
   6
   7 SPDX-License-Identifier: BSD-2-Clause-Patent
   8
   9 Module Name:
  10
  11   MemoryInit.c
  12
  13 Abstract:
  14
  15   PEIM to provide fake memory init
  16
  17 **/
  18
  19
  20
  21 //
  22 // The package level header files this module uses
  23 //
  24 #include <PiPei.h>
  25 //
  26 // The protocols, PPI and GUID defintions for this module
  27 //
  28 #include <Ppi/ArmMpCoreInfo.h>
  29
  30 //
  31 // The Library classes this module consumes
  32 //
  33 #include <Library/DebugLib.h>
  34 #include <Library/PeimEntryPoint.h>
  35 #include <Library/PeiServicesLib.h>
  36 #include <Library/PcdLib.h>
  37 #include <Library/HobLib.h>
  38 #include <Library/ArmLib.h>
  39
  40 /*++
  41
  42 Routine Description:
  43
  44 Arguments:
  45
  46   FileHandle  - Handle of the file being invoked.
  47   PeiServices - Describes the list of possible PEI Services.
  48
  49 Returns:
  50
  51   Status -  EFI_SUCCESS if the boot mode could be set
  52
  53 --*/
  54 EFI_STATUS
  55 EFIAPI
  56 InitializeCpuPeim (
  57   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  58   IN CONST EFI_PEI_SERVICES     **PeiServices
  59   )
  60 {
  61   EFI_STATUS              Status;
  62   ARM_MP_CORE_INFO_PPI    *ArmMpCoreInfoPpi;
  63   UINTN                   ArmCoreCount;
  64   ARM_CORE_INFO           *ArmCoreInfoTable;
  65
  66   // Enable program flow prediction, if supported.
  67   ArmEnableBranchPrediction ();
  68
  69   // Publish the CPU memory and io spaces sizes
  70   BuildCpuHob (ArmGetPhysicalAddressBits (), PcdGet8 (PcdPrePiCpuIoSize));
  71
  72   // Only MP Core platform need to produce gArmMpCoreInfoPpiGuid
  73   Status = PeiServicesLocatePpi (&gArmMpCoreInfoPpiGuid, 0, NULL, (VOID**)&ArmMpCoreInfoPpi);
  74   if (!EFI_ERROR(Status)) {
  75     // Build the MP Core Info Table
  76     ArmCoreCount = 0;
  77     Status = ArmMpCoreInfoPpi->GetMpCoreInfo (&ArmCoreCount, &ArmCoreInfoTable);
  78     if (!EFI_ERROR(Status) && (ArmCoreCount > 0)) {
  79       // Build MPCore Info HOB
  80       BuildGuidDataHob (&gArmMpCoreInfoGuid, ArmCoreInfoTable, sizeof (ARM_CORE_INFO) * ArmCoreCount);
  81     }
  82   }
  83
  84   return EFI_SUCCESS;
  85 }