[edk2-devel] [PATCH V4 01/27] MdePkg: Introduce DebugCommonLib interface and BaseDebugCommonLib
Laszlo Ersek
lersek at redhat.com
Mon May 11 20:42:01 UTC 2020
ah, one superficial comment:
On 05/11/20 17:40, Vitaly Cheptsov wrote:
> REF: https://bugzilla.tianocore.org/show_bug.cgi?id=2054
>
> This library allows to make a common part of all DebugLib instances
> and avoid the need to update every DebugLib on extending a new debug
> mask PCD bit.
>
> Signed-off-by: Vitaly Cheptsov <vit9696 at protonmail.com>
> ---
> MdePkg/Include/Library/DebugCommonLib.h | 154 ++++++++++++++++++++
> MdePkg/Include/Library/DebugLib.h | 137 +----------------
> MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.inf | 39 +++++
> MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.uni | 16 ++
> MdePkg/Library/BaseDebugCommonLib/DebugCommonLib.c | 113 ++++++++++++++
> MdePkg/MdePkg.dec | 3 +
> MdePkg/MdePkg.dsc | 1 +
> MdePkg/MdePkg.uni | 3 +-
> 8 files changed, 329 insertions(+), 137 deletions(-)
>
> diff --git a/MdePkg/Include/Library/DebugCommonLib.h b/MdePkg/Include/Library/DebugCommonLib.h
> new file mode 100644
> index 0000000000..31249f91fa
> --- /dev/null
> +++ b/MdePkg/Include/Library/DebugCommonLib.h
> @@ -0,0 +1,154 @@
> +/** @file
> + Provides services to access common debugging features.
> +
> + The debug common library interface provides common code for all debug libraries.
> +
> + Copyright (c) 2006 - 2020, Intel Corporation. All rights reserved.<BR>
> + Copyright (c) 2020, Vitaly Cheptsov. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#ifndef __DEBUG_COMMON_LIB_H__
> +#define __DEBUG_COMMON_LIB_H__
> +
> +//
> +// Declare bits for PcdDebugPropertyMask
> +//
> +#define DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED 0x01
> +#define DEBUG_PROPERTY_DEBUG_PRINT_ENABLED 0x02
> +#define DEBUG_PROPERTY_DEBUG_CODE_ENABLED 0x04
> +#define DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED 0x08
> +#define DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED 0x10
> +#define DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED 0x20
> +
> +//
> +// Declare bits for PcdDebugPrintErrorLevel and the ErrorLevel parameter of DebugPrint()
> +//
> +#define DEBUG_INIT 0x00000001 // Initialization
> +#define DEBUG_WARN 0x00000002 // Warnings
> +#define DEBUG_LOAD 0x00000004 // Load events
> +#define DEBUG_FS 0x00000008 // EFI File system
> +#define DEBUG_POOL 0x00000010 // Alloc & Free (pool)
> +#define DEBUG_PAGE 0x00000020 // Alloc & Free (page)
> +#define DEBUG_INFO 0x00000040 // Informational debug messages
> +#define DEBUG_DISPATCH 0x00000080 // PEI/DXE/SMM Dispatchers
> +#define DEBUG_VARIABLE 0x00000100 // Variable
> +#define DEBUG_BM 0x00000400 // Boot Manager
> +#define DEBUG_BLKIO 0x00001000 // BlkIo Driver
> +#define DEBUG_NET 0x00004000 // Network Io Driver
> +#define DEBUG_UNDI 0x00010000 // UNDI Driver
> +#define DEBUG_LOADFILE 0x00020000 // LoadFile
> +#define DEBUG_EVENT 0x00080000 // Event messages
> +#define DEBUG_GCD 0x00100000 // Global Coherency Database changes
> +#define DEBUG_CACHE 0x00200000 // Memory range cachability changes
> +#define DEBUG_VERBOSE 0x00400000 // Detailed debug messages that may
> + // significantly impact boot performance
> +#define DEBUG_ERROR 0x80000000 // Error
> +
> +//
> +// Aliases of debug message mask bits
> +//
> +#define EFI_D_INIT DEBUG_INIT
> +#define EFI_D_WARN DEBUG_WARN
> +#define EFI_D_LOAD DEBUG_LOAD
> +#define EFI_D_FS DEBUG_FS
> +#define EFI_D_POOL DEBUG_POOL
> +#define EFI_D_PAGE DEBUG_PAGE
> +#define EFI_D_INFO DEBUG_INFO
> +#define EFI_D_DISPATCH DEBUG_DISPATCH
> +#define EFI_D_VARIABLE DEBUG_VARIABLE
> +#define EFI_D_BM DEBUG_BM
> +#define EFI_D_BLKIO DEBUG_BLKIO
> +#define EFI_D_NET DEBUG_NET
> +#define EFI_D_UNDI DEBUG_UNDI
> +#define EFI_D_LOADFILE DEBUG_LOADFILE
> +#define EFI_D_EVENT DEBUG_EVENT
> +#define EFI_D_VERBOSE DEBUG_VERBOSE
> +#define EFI_D_ERROR DEBUG_ERROR
> +
> +/**
> + Returns TRUE if ASSERT() macros are enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugAssertEnabled (
> + VOID
> + );
> +
> +
> +/**
> + Returns TRUE if DEBUG() macros are enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugPrintEnabled (
> + VOID
> + );
> +
> +
> +/**
> + Returns TRUE if DEBUG_CODE() macros are enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugCodeEnabled (
> + VOID
> + );
> +
> +
> +/**
> + Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugClearMemoryEnabled (
> + VOID
> + );
> +
> +
> +/**
> + Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.
> +
> + This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.
> +
> + @retval TRUE Current ErrorLevel is supported.
> + @retval FALSE Current ErrorLevel is not supported.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugPrintLevelEnabled (
> + IN CONST UINTN ErrorLevel
> + );
> +
> +
> +#endif
> diff --git a/MdePkg/Include/Library/DebugLib.h b/MdePkg/Include/Library/DebugLib.h
> index baab34bf05..a38e0e2904 100644
> --- a/MdePkg/Include/Library/DebugLib.h
> +++ b/MdePkg/Include/Library/DebugLib.h
> @@ -16,60 +16,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
> #ifndef __DEBUG_LIB_H__
> #define __DEBUG_LIB_H__
>
> -//
> -// Declare bits for PcdDebugPropertyMask
> -//
> -#define DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED 0x01
> -#define DEBUG_PROPERTY_DEBUG_PRINT_ENABLED 0x02
> -#define DEBUG_PROPERTY_DEBUG_CODE_ENABLED 0x04
> -#define DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED 0x08
> -#define DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED 0x10
> -#define DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED 0x20
> -
> -//
> -// Declare bits for PcdDebugPrintErrorLevel and the ErrorLevel parameter of DebugPrint()
> -//
> -#define DEBUG_INIT 0x00000001 // Initialization
> -#define DEBUG_WARN 0x00000002 // Warnings
> -#define DEBUG_LOAD 0x00000004 // Load events
> -#define DEBUG_FS 0x00000008 // EFI File system
> -#define DEBUG_POOL 0x00000010 // Alloc & Free (pool)
> -#define DEBUG_PAGE 0x00000020 // Alloc & Free (page)
> -#define DEBUG_INFO 0x00000040 // Informational debug messages
> -#define DEBUG_DISPATCH 0x00000080 // PEI/DXE/SMM Dispatchers
> -#define DEBUG_VARIABLE 0x00000100 // Variable
> -#define DEBUG_BM 0x00000400 // Boot Manager
> -#define DEBUG_BLKIO 0x00001000 // BlkIo Driver
> -#define DEBUG_NET 0x00004000 // Network Io Driver
> -#define DEBUG_UNDI 0x00010000 // UNDI Driver
> -#define DEBUG_LOADFILE 0x00020000 // LoadFile
> -#define DEBUG_EVENT 0x00080000 // Event messages
> -#define DEBUG_GCD 0x00100000 // Global Coherency Database changes
> -#define DEBUG_CACHE 0x00200000 // Memory range cachability changes
> -#define DEBUG_VERBOSE 0x00400000 // Detailed debug messages that may
> - // significantly impact boot performance
> -#define DEBUG_ERROR 0x80000000 // Error
> -
> -//
> -// Aliases of debug message mask bits
> -//
> -#define EFI_D_INIT DEBUG_INIT
> -#define EFI_D_WARN DEBUG_WARN
> -#define EFI_D_LOAD DEBUG_LOAD
> -#define EFI_D_FS DEBUG_FS
> -#define EFI_D_POOL DEBUG_POOL
> -#define EFI_D_PAGE DEBUG_PAGE
> -#define EFI_D_INFO DEBUG_INFO
> -#define EFI_D_DISPATCH DEBUG_DISPATCH
> -#define EFI_D_VARIABLE DEBUG_VARIABLE
> -#define EFI_D_BM DEBUG_BM
> -#define EFI_D_BLKIO DEBUG_BLKIO
> -#define EFI_D_NET DEBUG_NET
> -#define EFI_D_UNDI DEBUG_UNDI
> -#define EFI_D_LOADFILE DEBUG_LOADFILE
> -#define EFI_D_EVENT DEBUG_EVENT
> -#define EFI_D_VERBOSE DEBUG_VERBOSE
> -#define EFI_D_ERROR DEBUG_ERROR
> +#include <Library/DebugCommonLib.h>
>
> /**
> Prints a debug message to the debug output device if the specified error level is enabled.
> @@ -198,88 +145,6 @@ DebugClearMemory (
> );
>
>
> -/**
> - Returns TRUE if ASSERT() macros are enabled.
> -
> - This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
> - PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> -
> - @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
> - @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.
> -
> -**/
> -BOOLEAN
> -EFIAPI
> -DebugAssertEnabled (
> - VOID
> - );
> -
> -
> -/**
> - Returns TRUE if DEBUG() macros are enabled.
> -
> - This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
> - PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> -
> - @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
> - @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.
> -
> -**/
> -BOOLEAN
> -EFIAPI
> -DebugPrintEnabled (
> - VOID
> - );
> -
> -
> -/**
> - Returns TRUE if DEBUG_CODE() macros are enabled.
> -
> - This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
> - PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> -
> - @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
> - @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.
> -
> -**/
> -BOOLEAN
> -EFIAPI
> -DebugCodeEnabled (
> - VOID
> - );
> -
> -
> -/**
> - Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.
> -
> - This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
> - PcdDebugProperyMask is set. Otherwise, FALSE is returned.
> -
> - @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
> - @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
> -
> -**/
> -BOOLEAN
> -EFIAPI
> -DebugClearMemoryEnabled (
> - VOID
> - );
> -
> -/**
> - Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.
> -
> - This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.
> -
> - @retval TRUE Current ErrorLevel is supported.
> - @retval FALSE Current ErrorLevel is not supported.
> -
> -**/
> -BOOLEAN
> -EFIAPI
> -DebugPrintLevelEnabled (
> - IN CONST UINTN ErrorLevel
> - );
> -
> /**
> Internal worker macro that calls DebugAssert().
>
> diff --git a/MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.inf b/MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.inf
> new file mode 100644
> index 0000000000..c1f4b0d5a8
> --- /dev/null
> +++ b/MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.inf
> @@ -0,0 +1,39 @@
> +## @file
> +# Instance of Debug Common Library interface.
> +# It uses PcdLib to provide a common set of Debug Library interface.
> +#
> +# Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
> +# Copyright (c) 2020, Vitaly Cheptsov. All rights reserved.<BR>
> +#
> +# SPDX-License-Identifier: BSD-2-Clause-Patent
> +#
> +#
> +##
> +
> +[Defines]
> + INF_VERSION = 0x00010005
> + BASE_NAME = BaseDebugCommonLib
> + MODULE_UNI_FILE = BaseDebugCommonLib.uni
> + FILE_GUID = 7CD790D2-E13F-4446-AF4F-813F0B9DEFF8
> + MODULE_TYPE = BASE
> + VERSION_STRING = 1.0
> + LIBRARY_CLASS = DebugCommonLib
> +
> +#
> +# VALID_ARCHITECTURES = IA32 X64 EBC
> +#
I think the VALID_ARCHITECTURES comment should be dropped altogether.
At least the current arch list "IA32 X64 EBC" is incorrect; first
because ARM and AARCH64 are missing (despite the series -- correctly --
patching Arm*Pkg and such), and second because -- I *think* -- EBC is no
longer an arch natively supported by edk2. (Mike and Liming will correct
me on that, if needed.)
(... Please consider adding Cc: tags to the commit messages, so that
each patch email reaches the subject package owners directly too. Anyway
that's for the future.)
Thanks,
Laszlo
> +
> +[Sources]
> + DebugCommonLib.c
> +
> +[Packages]
> + MdePkg/MdePkg.dec
> +
> +[LibraryClasses]
> + PcdLib
> +
> +[Pcd]
> + gEfiMdePkgTokenSpaceGuid.PcdDebugClearMemoryValue ## SOMETIMES_CONSUMES
> + gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask ## CONSUMES
> + gEfiMdePkgTokenSpaceGuid.PcdFixedDebugPrintErrorLevel ## CONSUMES
> +
> diff --git a/MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.uni b/MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.uni
> new file mode 100644
> index 0000000000..a5ad34298b
> --- /dev/null
> +++ b/MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.uni
> @@ -0,0 +1,16 @@
> +// /** @file
> +// Instance of Debug Common Library interface.
> +//
> +// It uses PcdLib to provide a common set of Debug Library interface.
> +//
> +// Copyright (c) 2020, Vitaly Cheptsov. All rights reserved.<BR>
> +//
> +// SPDX-License-Identifier: BSD-2-Clause-Patent
> +//
> +// **/
> +
> +
> +#string STR_MODULE_ABSTRACT #language en-US "Instance of Debug Common Library interface"
> +
> +#string STR_MODULE_DESCRIPTION #language en-US "It uses PcdLib to provide a common set of Debug Library interface."
> +
> diff --git a/MdePkg/Library/BaseDebugCommonLib/DebugCommonLib.c b/MdePkg/Library/BaseDebugCommonLib/DebugCommonLib.c
> new file mode 100644
> index 0000000000..2291fb5382
> --- /dev/null
> +++ b/MdePkg/Library/BaseDebugCommonLib/DebugCommonLib.c
> @@ -0,0 +1,113 @@
> +/** @file
> + Instance of Debug Common Library interface.
> + It uses PcdLib to provide a common set of Debug Library interface.
> +
> + Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
> + Copyright (c) 2020, Vitaly Cheptsov. All rights reserved.<BR>
> + SPDX-License-Identifier: BSD-2-Clause-Patent
> +
> +**/
> +
> +#include <Base.h>
> +#include <Library/DebugCommonLib.h>
> +#include <Library/PcdLib.h>
> +
> +
> +/**
> + Returns TRUE if ASSERT() macros are enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugAssertEnabled (
> + VOID
> + )
> +{
> + return (BOOLEAN) ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_ASSERT_ENABLED) != 0);
> +}
> +
> +
> +/**
> + Returns TRUE if DEBUG() macros are enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_DEBUG_PRINT_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugPrintEnabled (
> + VOID
> + )
> +{
> + return (BOOLEAN) ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_PRINT_ENABLED) != 0);
> +}
> +
> +
> +/**
> + Returns TRUE if DEBUG_CODE() macros are enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_DEBUG_CODE_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugCodeEnabled (
> + VOID
> + )
> +{
> + return (BOOLEAN) ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_DEBUG_CODE_ENABLED) != 0);
> +}
> +
> +
> +/**
> + Returns TRUE if DEBUG_CLEAR_MEMORY() macro is enabled.
> +
> + This function returns TRUE if the DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of
> + PcdDebugProperyMask is set. Otherwise FALSE is returned.
> +
> + @retval TRUE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is set.
> + @retval FALSE The DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED bit of PcdDebugProperyMask is clear.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugClearMemoryEnabled (
> + VOID
> + )
> +{
> + return (BOOLEAN) ((PcdGet8 (PcdDebugPropertyMask) & DEBUG_PROPERTY_CLEAR_MEMORY_ENABLED) != 0);
> +}
> +
> +
> +/**
> + Returns TRUE if any one of the bit is set both in ErrorLevel and PcdFixedDebugPrintErrorLevel.
> +
> + This function compares the bit mask of ErrorLevel and PcdFixedDebugPrintErrorLevel.
> +
> + @retval TRUE Current ErrorLevel is supported.
> + @retval FALSE Current ErrorLevel is not supported.
> +
> +**/
> +BOOLEAN
> +EFIAPI
> +DebugPrintLevelEnabled (
> + IN CONST UINTN ErrorLevel
> + )
> +{
> + return (BOOLEAN) ((ErrorLevel & PcdGet32 (PcdFixedDebugPrintErrorLevel)) != 0);
> +}
> +
> diff --git a/MdePkg/MdePkg.dec b/MdePkg/MdePkg.dec
> index 0b9c4bc40a..a121b9ecab 100644
> --- a/MdePkg/MdePkg.dec
> +++ b/MdePkg/MdePkg.dec
> @@ -229,6 +229,9 @@ [LibraryClasses]
> # library class maps directly on top of the Timer class.
> S3StallLib|Include/Library/S3StallLib.h
>
> + ## @libraryclass Provides services to access common debugging features.
> + DebugCommonLib|Include/Library/DebugCommonLib.h
> +
> ## @libraryclass Defines library APIs used by modules to get/set print error level.
> DebugPrintErrorLevelLib|Include/Library/DebugPrintErrorLevelLib.h
>
> diff --git a/MdePkg/MdePkg.dsc b/MdePkg/MdePkg.dsc
> index 6cd38e7ec3..1072322450 100644
> --- a/MdePkg/MdePkg.dsc
> +++ b/MdePkg/MdePkg.dsc
> @@ -36,6 +36,7 @@ [Components]
> MdePkg/Library/UefiFileHandleLib/UefiFileHandleLib.inf
> MdePkg/Library/BaseCacheMaintenanceLib/BaseCacheMaintenanceLib.inf
> MdePkg/Library/BaseCpuLib/BaseCpuLib.inf
> + MdePkg/Library/BaseDebugCommonLib/BaseDebugCommonLib.inf
> MdePkg/Library/BaseDebugLibNull/BaseDebugLibNull.inf
> MdePkg/Library/BaseDebugLibSerialPort/BaseDebugLibSerialPort.inf
> MdePkg/Library/BaseDebugPrintErrorLevelLib/BaseDebugPrintErrorLevelLib.inf
> diff --git a/MdePkg/MdePkg.uni b/MdePkg/MdePkg.uni
> index 5c1fa24065..5addb0eaba 100644
> --- a/MdePkg/MdePkg.uni
> +++ b/MdePkg/MdePkg.uni
> @@ -189,7 +189,8 @@
> "BIT2 - Enable Debug Code.<BR>\n"
> "BIT3 - Enable Clear Memory.<BR>\n"
> "BIT4 - Enable BreakPoint as ASSERT.<BR>\n"
> - "BIT5 - Enable DeadLoop as ASSERT.<BR>"
> + "BIT5 - Enable DeadLoop as ASSERT.<BR>\n"
> + "BIT6 - Treat constrait violations as ASSERT.<BR>"
>
> #string STR_gEfiMdePkgTokenSpaceGuid_ERR_80000002 #language en-US "Reserved bits must be set to zero."
>
>
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