MdeModulePkg: Replace BSD License with BSD+Patent License

[mirror_edk2.git] / MdeModulePkg / Library / PeiDebugPrintHobLib / PeiDebugPrintHobLib.c

/** @file\r
  NULL Library class that reads Debug Mask variable and if it exists makes a\r
  HOB that contains the debug mask.\r
\r
  Copyright (c) 2011, Apple, Inc. All rights reserved.<BR>\r
  SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <PiPei.h>\r
\r
#include <Library/HobLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/PeiServicesLib.h>\r
\r
#include <Ppi/ReadOnlyVariable2.h>\r
#include <Guid/DebugMask.h>\r
\r
\r
/**\r
  The constructor reads variable and sets HOB\r
\r
  @param  FileHandle   The handle of FFS header the loaded driver.\r
  @param  PeiServices  The pointer to the PEI services.\r
\r
  @retval EFI_SUCCESS  The constructor always returns EFI_SUCCESS.\r
\r
**/\r
EFI_STATUS\r
EFIAPI\r
PeiDebugPrintHobLibConstructor (\r
  IN EFI_PEI_FILE_HANDLE        FileHandle,\r
  IN CONST EFI_PEI_SERVICES     **PeiServices\r
  )\r
{\r
  EFI_STATUS                      Status;\r
  EFI_PEI_READ_ONLY_VARIABLE2_PPI *Variable;\r
  UINTN                           Size;\r
  UINT64                          GlobalErrorLevel;\r
  UINT32                          HobErrorLevel;\r
\r
  Status = PeiServicesLocatePpi (\r
             &gEfiPeiReadOnlyVariable2PpiGuid,\r
             0,\r
             NULL,\r
             (VOID **)&Variable\r
             );\r
  if (!EFI_ERROR (Status)) {\r
    Size = sizeof (GlobalErrorLevel);\r
    Status = Variable->GetVariable (\r
                         Variable,\r
                         DEBUG_MASK_VARIABLE_NAME,\r
                         &gEfiGenericVariableGuid,\r
                         NULL,\r
                         &Size,\r
                         &GlobalErrorLevel\r
                         );\r
    if (!EFI_ERROR (Status)) {\r
      //\r
      // Build the GUID'ed HOB for DXE\r
      //\r
      HobErrorLevel = (UINT32)GlobalErrorLevel;\r
      BuildGuidDataHob (\r
        &gEfiGenericVariableGuid,\r
        &HobErrorLevel,\r
        sizeof (HobErrorLevel)\r
        );\r
    }\r
  }\r
\r
  return EFI_SUCCESS;\r
}\r