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 This program and the accompanying materials
   8 are licensed and made available under the terms and conditions of the BSD License
   9 which accompanies this distribution.  The full text of the license may be found at
  10 http://opensource.org/licenses/bsd-license.php
  11
  12 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  13 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  14
  15 Module Name:
  16
  17   MemoryInit.c
  18
  19 Abstract:
  20
  21   PEIM to provide fake memory init
  22
  23 **/
  24
  25
  26
  27 //
  28 // The package level header files this module uses
  29 //
  30 #include <PiPei.h>
  31 //
  32 // The protocols, PPI and GUID defintions for this module
  33 //
  34 #include <Ppi/ArmMpCoreInfo.h>
  35
  36 //
  37 // The Library classes this module consumes
  38 //
  39 #include <Library/DebugLib.h>
  40 #include <Library/PeimEntryPoint.h>
  41 #include <Library/PeiServicesLib.h>
  42 #include <Library/PcdLib.h>
  43 #include <Library/HobLib.h>
  44 #include <Library/ArmLib.h>
  45
  46 /*++
  47
  48 Routine Description:
  49
  50 Arguments:
  51
  52   FileHandle  - Handle of the file being invoked.
  53   PeiServices - Describes the list of possible PEI Services.
  54
  55 Returns:
  56
  57   Status -  EFI_SUCCESS if the boot mode could be set
  58
  59 --*/
  60 EFI_STATUS
  61 EFIAPI
  62 InitializeCpuPeim (
  63   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  64   IN CONST EFI_PEI_SERVICES     **PeiServices
  65   )
  66 {
  67   EFI_STATUS              Status;
  68   ARM_MP_CORE_INFO_PPI    *ArmMpCoreInfoPpi;
  69   UINTN                   ArmCoreCount;
  70   ARM_CORE_INFO           *ArmCoreInfoTable;
  71
  72   // Enable program flow prediction, if supported.
  73   ArmEnableBranchPrediction ();
  74
  75   // Publish the CPU memory and io spaces sizes
  76   BuildCpuHob (PcdGet8 (PcdPrePiCpuMemorySize), PcdGet8 (PcdPrePiCpuIoSize));
  77
  78   // Only MP Core platform need to produce gArmMpCoreInfoPpiGuid
  79   Status = PeiServicesLocatePpi (&gArmMpCoreInfoPpiGuid, 0, NULL, (VOID**)&ArmMpCoreInfoPpi);
  80   if (!EFI_ERROR(Status)) {
  81     // Build the MP Core Info Table
  82     ArmCoreCount = 0;
  83     Status = ArmMpCoreInfoPpi->GetMpCoreInfo (&ArmCoreCount, &ArmCoreInfoTable);
  84     if (!EFI_ERROR(Status) && (ArmCoreCount > 0)) {
  85       // Build MPCore Info HOB
  86       BuildGuidDataHob (&gArmMpCoreInfoGuid, ArmCoreInfoTable, sizeof (ARM_CORE_INFO) * ArmCoreCount);
  87     }
  88   }
  89
  90   return EFI_SUCCESS;
  91 }