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 - 2018, Intel Corporation. All rights reserved.<BR>
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include "StatusCodeHandlerSmm.h"
  11
  12 EFI_SMM_RSC_HANDLER_PROTOCOL  *mRscHandlerProtocol       = NULL;
  13
  14
  15 /**
  16   Dispatch initialization request to sub status code devices based on
  17   customized feature flags.
  18
  19 **/
  20 VOID
  21 InitializationDispatcherWorker (
  22   VOID
  23   )
  24 {
  25   EFI_STATUS                        Status;
  26
  27   //
  28   // If enable UseSerial, then initialize serial port.
  29   // if enable UseRuntimeMemory, then initialize runtime memory status code worker.
  30   //
  31   if (FeaturePcdGet (PcdStatusCodeUseSerial)) {
  32     //
  33     // Call Serial Port Lib API to initialize serial port.
  34     //
  35     Status = SerialPortInitialize ();
  36     ASSERT_EFI_ERROR (Status);
  37   }
  38   if (FeaturePcdGet (PcdStatusCodeUseMemory)) {
  39     Status = MemoryStatusCodeInitializeWorker ();
  40     ASSERT_EFI_ERROR (Status);
  41   }
  42 }
  43
  44 /**
  45   Entry point of SMM Status Code Driver.
  46
  47   This function is the entry point of SMM Status Code Driver.
  48
  49   @param  ImageHandle       The firmware allocated handle for the EFI image.
  50   @param  SystemTable       A pointer to the EFI System Table.
  51
  52   @retval EFI_SUCCESS       The entry point is executed successfully.
  53
  54 **/
  55 EFI_STATUS
  56 EFIAPI
  57 StatusCodeHandlerSmmEntry (
  58   IN EFI_HANDLE         ImageHandle,
  59   IN EFI_SYSTEM_TABLE   *SystemTable
  60   )
  61 {
  62   EFI_STATUS                Status;
  63
  64   Status = gSmst->SmmLocateProtocol (
  65                     &gEfiSmmRscHandlerProtocolGuid,
  66                     NULL,
  67                     (VOID **) &mRscHandlerProtocol
  68                     );
  69   ASSERT_EFI_ERROR (Status);
  70
  71   //
  72   // Dispatch initialization request to supported devices
  73   //
  74   InitializationDispatcherWorker ();
  75
  76   if (FeaturePcdGet (PcdStatusCodeUseSerial)) {
  77     mRscHandlerProtocol->Register (SerialStatusCodeReportWorker);
  78   }
  79   if (FeaturePcdGet (PcdStatusCodeUseMemory)) {
  80     mRscHandlerProtocol->Register (MemoryStatusCodeReportWorker);
  81   }
  82
  83   return EFI_SUCCESS;
  84 }