4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/** @file
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync NULL Library class that reads Debug Mask variable and if it exists makes a
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync HOB that contains the debug mask.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Copyright (c) 2011, Apple, Inc. All rights reserved.<BR>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync This program and the accompanying materials
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync are licensed and made available under the terms and conditions of the BSD License
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync which accompanies this distribution. The full text of the license may be found at
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync http://opensource.org/licenses/bsd-license.php
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <PiPei.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/HobLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/DebugLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Library/PeiServicesLib.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Ppi/ReadOnlyVariable2.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync#include <Guid/DebugMask.h>
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync/**
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync The constructor reads variable and sets HOB
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param FileHandle The handle of FFS header the loaded driver.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @param PeiServices The pointer to the PEI services.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync @retval EFI_SUCCESS The constructor always returns EFI_SUCCESS.
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync**/
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFI_STATUS
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncEFIAPI
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsyncPeiDebugPrintHobLibConstructor (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN EFI_PEI_FILE_HANDLE FileHandle,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync IN CONST EFI_PEI_SERVICES **PeiServices
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync )
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync{
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync EFI_STATUS Status;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync EFI_PEI_READ_ONLY_VARIABLE2_PPI *Variable;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync UINTN Size;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync UINT64 GlobalErrorLevel;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync UINT32 HobErrorLevel;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Status = PeiServicesLocatePpi (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync &gEfiPeiReadOnlyVariable2PpiGuid,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync 0,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync NULL,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync (VOID **)&Variable
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (!EFI_ERROR (Status)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Size = sizeof (GlobalErrorLevel);
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Status = Variable->GetVariable (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync Variable,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync DEBUG_MASK_VARIABLE_NAME,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync &gEfiGenericVariableGuid,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync NULL,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync &Size,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync &GlobalErrorLevel
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync if (!EFI_ERROR (Status)) {
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync //
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync // Build the GUID'ed HOB for DXE
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync //
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync HobErrorLevel = (UINT32)GlobalErrorLevel;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync BuildGuidDataHob (
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync &gEfiGenericVariableGuid,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync &HobErrorLevel,
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync sizeof (HobErrorLevel)
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync );
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync }
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync return EFI_SUCCESS;
4fd606d1f5abe38e1f42c38de1d2e895166bd0f4vboxsync}