UefiPayloadPkg/Library/DebugPrintErrorLevelLibHob/DebugPrintErrorLevelLibHob.c

   1 /** @file
   2   Debug Print Error Level library instance that retrieves
   3   the DebugPrintErrorLevel from bootloader.
   4
   5   Copyright (c) 2022, Intel Corporation. All rights reserved.<BR>
   6   SPDX-License-Identifier: BSD-2-Clause-Patent
   7
   8 **/
   9
  10 #include <Base.h>
  11 #include <Uefi.h>
  12 #include <PiDxe.h>
  13 #include <Library/PcdLib.h>
  14 #include <Library/HobLib.h>
  15 #include <Guid/DebugPrintErrorLevel.h>
  16 #include <Library/DebugPrintErrorLevelLib.h>
  17 #include <UniversalPayload/UniversalPayload.h>
  18
  19 STATIC UINT32   gDebugPrintErrorLevel;
  20 STATIC BOOLEAN  gDebugPrintErrorLevelInitialized = FALSE;
  21
  22 /**
  23   Returns the debug print error level mask for the current module.
  24
  25   @return  Debug print error level mask for the current module.
  26
  27 **/
  28 UINT32
  29 EFIAPI
  30 GetDebugPrintErrorLevel (
  31   VOID
  32   )
  33 {
  34   VOID                                  *GuidHob;
  35   UNIVERSAL_PAYLOAD_GENERIC_HEADER      *GenericHeader;
  36   UEFI_PAYLOAD_DEBUG_PRINT_ERROR_LEVEL  *DebugPrintErrorLevel;
  37
  38   if (!gDebugPrintErrorLevelInitialized) {
  39     gDebugPrintErrorLevelInitialized = TRUE;
  40     gDebugPrintErrorLevel            = PcdGet32 (PcdDebugPrintErrorLevel);
  41     GuidHob                          = GetFirstGuidHob (&gEdkiiDebugPrintErrorLevelGuid);
  42     if (GuidHob != NULL) {
  43       GenericHeader = (UNIVERSAL_PAYLOAD_GENERIC_HEADER *)GET_GUID_HOB_DATA (GuidHob);
  44       if ((sizeof (UNIVERSAL_PAYLOAD_GENERIC_HEADER) < GET_GUID_HOB_DATA_SIZE (GuidHob)) &&
  45           (GenericHeader->Length <= GET_GUID_HOB_DATA_SIZE (GuidHob)))
  46       {
  47         if (GenericHeader->Revision == UEFI_PAYLOAD_DEBUG_PRINT_ERROR_LEVEL_REVISION) {
  48           DebugPrintErrorLevel =  (UEFI_PAYLOAD_DEBUG_PRINT_ERROR_LEVEL *)GET_GUID_HOB_DATA (GuidHob);
  49           if (DebugPrintErrorLevel->Header.Length >= UNIVERSAL_PAYLOAD_SIZEOF_THROUGH_FIELD (UEFI_PAYLOAD_DEBUG_PRINT_ERROR_LEVEL, ErrorLevel)) {
  50             gDebugPrintErrorLevel = DebugPrintErrorLevel->ErrorLevel;
  51           }
  52         }
  53       }
  54     }
  55   }
  56
  57   return gDebugPrintErrorLevel;
  58 }
  59
  60 /**
  61   Sets the global debug print error level mask fpr the entire platform.
  62
  63   @param   ErrorLevel     Global debug print error level.
  64
  65   @retval  TRUE           The debug print error level mask was sucessfully set.
  66   @retval  FALSE          The debug print error level mask could not be set.
  67
  68 **/
  69 BOOLEAN
  70 EFIAPI
  71 SetDebugPrintErrorLevel (
  72   UINT32  ErrorLevel
  73   )
  74 {
  75   //
  76   // This library uinstance does not support setting the global debug print error
  77   // level mask.
  78   //
  79   return FALSE;
  80 }