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