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 // The package level header files this module uses
  21 //
  22 #include <PiPei.h>
  23 //
  24 // The protocols, PPI and GUID definitions for this module
  25 //
  26 #include <Ppi/ArmMpCoreInfo.h>
  27
  28 //
  29 // The Library classes this module consumes
  30 //
  31 #include <Library/DebugLib.h>
  32 #include <Library/PeimEntryPoint.h>
  33 #include <Library/PeiServicesLib.h>
  34 #include <Library/PcdLib.h>
  35 #include <Library/HobLib.h>
  36 #include <Library/ArmLib.h>
  37
  38 /*++
  39
  40 Routine Description:
  41
  42 Arguments:
  43
  44   FileHandle  - Handle of the file being invoked.
  45   PeiServices - Describes the list of possible PEI Services.
  46
  47 Returns:
  48
  49   Status -  EFI_SUCCESS if the boot mode could be set
  50
  51 --*/
  52 EFI_STATUS
  53 EFIAPI
  54 InitializeCpuPeim (
  55   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  56   IN CONST EFI_PEI_SERVICES     **PeiServices
  57   )
  58 {
  59   EFI_STATUS            Status;
  60   ARM_MP_CORE_INFO_PPI  *ArmMpCoreInfoPpi;
  61   UINTN                 ArmCoreCount;
  62   ARM_CORE_INFO         *ArmCoreInfoTable;
  63
  64   // Enable program flow prediction, if supported.
  65   ArmEnableBranchPrediction ();
  66
  67   // Publish the CPU memory and io spaces sizes
  68   BuildCpuHob (ArmGetPhysicalAddressBits (), PcdGet8 (PcdPrePiCpuIoSize));
  69
  70   // Only MP Core platform need to produce gArmMpCoreInfoPpiGuid
  71   Status = PeiServicesLocatePpi (&gArmMpCoreInfoPpiGuid, 0, NULL, (VOID **)&ArmMpCoreInfoPpi);
  72   if (!EFI_ERROR (Status)) {
  73     // Build the MP Core Info Table
  74     ArmCoreCount = 0;
  75     Status       = ArmMpCoreInfoPpi->GetMpCoreInfo (&ArmCoreCount, &ArmCoreInfoTable);
  76     if (!EFI_ERROR (Status) && (ArmCoreCount > 0)) {
  77       // Build MPCore Info HOB
  78       BuildGuidDataHob (&gArmMpCoreInfoGuid, ArmCoreInfoTable, sizeof (ARM_CORE_INFO) * ArmCoreCount);
  79     }
  80   }
  81
  82   return EFI_SUCCESS;
  83 }