104 lines
3.0 KiB
C
104 lines
3.0 KiB
C
/** @file
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Debug Print Error Level library instance that retrieves the current error
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level from PcdDebugPrintErrorLevel. This generic library instance does not
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support the setting of the global debug print error level mask for the platform.
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Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Base.h>
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#include <PiPei.h>
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#include <Library/DebugPrintErrorLevelLib.h>
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#include <Library/PcdLib.h>
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#include <Library/PeiServicesTablePointerLib.h>
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#include <Library/VariableLib.h>
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#include <Library/HobLib.h>
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#include <Guid/DebugMask.h>
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STATIC EFI_GUID mInternalDebugPrintErrorLevelGuid = {0x778a82c7, 0x4d64, 0x43ed, 0x8e, 0x40, 0x42, 0xc2, 0xc7, 0x37, 0xbc, 0x5b};
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/**
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Returns the debug print error level mask for the current module.
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@return Debug print error level mask for the current module.
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**/
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UINT32
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EFIAPI
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GetDebugPrintErrorLevel (
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VOID
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)
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{
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EFI_STATUS Status;
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UINTN Size;
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UINT64 GlobalErrorLevel;
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UINT32 DebugPrintErrorLevel;
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EFI_HOB_GUID_TYPE *GuidHob;
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UINT32 *HobInfo;
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//
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// Try to get print debug level from HOB to reduce POST time by reducing unnecessary
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// get variable.
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//
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GuidHob = GetFirstGuidHob (&mInternalDebugPrintErrorLevelGuid);
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if (GuidHob != NULL) {
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return *((UINT32 *) GET_GUID_HOB_DATA (GuidHob));
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}
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//
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// Retrieve the current debug print error level mask from PcdDebugPrintErrorLevel.
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//
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DebugPrintErrorLevel = PcdGet32 (PcdDebugPrintErrorLevel);
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Size = sizeof (GlobalErrorLevel);
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Status = CommonGetVariable (
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DEBUG_MASK_VARIABLE_NAME,
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&gEfiGenericVariableGuid,
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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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DebugPrintErrorLevel = (UINT32)GlobalErrorLevel;
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}
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//
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// Store the print debug level to HOB and then it can be found from HOB next time.
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//
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HobInfo = BuildGuidHob (&mInternalDebugPrintErrorLevelGuid, sizeof (UINT32));
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if (HobInfo != NULL) {
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*HobInfo = DebugPrintErrorLevel;
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}
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return DebugPrintErrorLevel;
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}
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/**
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Sets the global debug print error level mask fpr the entire platform.
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@param ErrorLevel Global debug print error level.
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@retval TRUE The debug print error level mask was sucessfully set.
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@retval FALSE The debug print error level mask could not be set.
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**/
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BOOLEAN
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EFIAPI
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SetDebugPrintErrorLevel (
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UINT32 ErrorLevel
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)
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{
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//
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// This library uinstance does not support setting the global debug print error
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// level mask.
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//
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return FALSE;
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}
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