MdeModulePkg/Universal/StatusCodeHandler/Smm/StatusCodeHandlerSmm.c

   1 /** @file
   2   Status Code Handler Driver which produces general handlers and hook them
   3   onto the SMM status code router.
   4
   5   Copyright (c) 2009, Intel Corporation. All rights reserved.<BR>
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #include "StatusCodeHandlerSmm.h"
  17
  18 EFI_SMM_RSC_HANDLER_PROTOCOL  *mRscHandlerProtocol       = NULL;
  19
  20
  21 /**
  22   Dispatch initialization request to sub status code devices based on
  23   customized feature flags.
  24
  25 **/
  26 VOID
  27 InitializationDispatcherWorker (
  28   VOID
  29   )
  30 {
  31   EFI_STATUS                        Status;
  32
  33   //
  34   // If enable UseSerial, then initialize serial port.
  35   // if enable UseRuntimeMemory, then initialize runtime memory status code worker.
  36   //
  37   if (FeaturePcdGet (PcdStatusCodeUseSerial)) {
  38     //
  39     // Call Serial Port Lib API to initialize serial port.
  40     //
  41     Status = SerialPortInitialize ();
  42     ASSERT_EFI_ERROR (Status);
  43   }
  44   if (FeaturePcdGet (PcdStatusCodeUseMemory)) {
  45     Status = MemoryStatusCodeInitializeWorker ();
  46     ASSERT_EFI_ERROR (Status);
  47   }
  48 }
  49
  50 /**
  51   Entry point of SMM Status Code Driver.
  52
  53   This function is the entry point of SMM Status Code Driver.
  54
  55   @param  ImageHandle       The firmware allocated handle for the EFI image.
  56   @param  SystemTable       A pointer to the EFI System Table.
  57
  58   @retval EFI_SUCCESS       The entry point is executed successfully.
  59
  60 **/
  61 EFI_STATUS
  62 EFIAPI
  63 StatusCodeHandlerSmmEntry (
  64   IN EFI_HANDLE         ImageHandle,
  65   IN EFI_SYSTEM_TABLE   *SystemTable
  66   )
  67 {
  68   EFI_STATUS                Status;
  69
  70   Status = gSmst->SmmLocateProtocol (
  71                     &gEfiSmmRscHandlerProtocolGuid,
  72                     NULL,
  73                     (VOID **) &mRscHandlerProtocol
  74                     );
  75   ASSERT_EFI_ERROR (Status);
  76
  77   //
  78   // Dispatch initialization request to supported devices
  79   //
  80   InitializationDispatcherWorker ();
  81
  82   if (FeaturePcdGet (PcdStatusCodeUseSerial)) {
  83     mRscHandlerProtocol->Register (SerialStatusCodeReportWorker);
  84   }
  85   if (FeaturePcdGet (PcdStatusCodeUseMemory)) {
  86     mRscHandlerProtocol->Register (MemoryStatusCodeReportWorker);
  87   }
  88
  89   return EFI_SUCCESS;
  90 }