UefiCpuPkg/CpuMpPei/CpuMpPei.c

   1 /** @file
   2   CPU PEI Module installs CPU Multiple Processor PPI.
   3
   4   Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "CpuMpPei.h"
  16 /**
  17   The Entry point of the MP CPU PEIM.
  18
  19   This function will wakeup APs and collect CPU AP count and install the
  20   Mp Service Ppi.
  21
  22   @param  FileHandle    Handle of the file being invoked.
  23   @param  PeiServices   Describes the list of possible PEI Services.
  24
  25   @retval EFI_SUCCESS   MpServicePpi is installed successfully.
  26
  27 **/
  28 EFI_STATUS
  29 EFIAPI
  30 CpuMpPeimInit (
  31   IN       EFI_PEI_FILE_HANDLE  FileHandle,
  32   IN CONST EFI_PEI_SERVICES     **PeiServices
  33   )
  34 {
  35   EFI_STATUS           Status;
  36   EFI_VECTOR_HANDOFF_INFO         *VectorInfo;
  37   EFI_PEI_VECTOR_HANDOFF_INFO_PPI *VectorHandoffInfoPpi;
  38
  39   //
  40   // Get Vector Hand-off Info PPI
  41   //
  42   VectorInfo = NULL;
  43   Status = PeiServicesLocatePpi (
  44              &gEfiVectorHandoffInfoPpiGuid,
  45              0,
  46              NULL,
  47              (VOID **)&VectorHandoffInfoPpi
  48              );
  49   if (Status == EFI_SUCCESS) {
  50     VectorInfo = VectorHandoffInfoPpi->Info;
  51   }
  52   Status = InitializeCpuExceptionHandlers (VectorInfo);
  53   ASSERT_EFI_ERROR (Status);
  54
  55   //
  56   // Wakeup APs to do initialization
  57   //
  58   Status = MpInitLibInitialize ();
  59   ASSERT_EFI_ERROR (Status);
  60
  61   //
  62   // Update and publish CPU BIST information
  63   //
  64   CollectBistDataFromPpi (PeiServices);
  65
  66   //
  67   // Install CPU MP PPI
  68   //
  69   Status = PeiServicesInstallPpi(&mPeiCpuMpPpiDesc);
  70   ASSERT_EFI_ERROR (Status);
  71
  72   return Status;
  73 }