Update DebugLib to provide support for "err" command in the EFI Shell to adjust the filter mask for DEBUG() messages. The "err" command provide the ability to adjust this filter mask at a global level through an EFI Variable and at the module level through a the Debug Mask Protocol. In order to support the degree of flexibility, the DebugLib needs to use library to abstract the get/set operations to the filter mask.

1) Define new DebugPrintErrorLevelLib that produces an API that DebugPrint() APIs in DebugLib implementations can use to retrieve the current mask for filtering DebugPrint() statements.
2) Add a BASE type implementation of the DebugPrintErrorLevelLib that directly accessed PcdDebugPrintErrorLevel to provide backward compatibility with the current EDK II DebugLib behavior.
3) Update description of the DebugPrint() API in the DebugLib to describe the new dependency on the DebugPrintErrorLevelLib that replaces the prior dependency in the PcdDebugPrintErrorLevel PCD.
4) Update the comments in BaseDebugLibNull to match (3).
5) Update BaseDebugLibSerialPort to use DebugPrintErrorLevelLib instead of the PcdDebugPrintErrorLevel PCD.
6) Update UefiDebugLinConOut to use DebugPrintErrorLevelLib instead of the PcdDebugPrintErrorLevel PCD.
7) Update UefiDebugLibStdErr to use DebugPrintErrorLevelLib instead of the PcdDebugPrintErrorLevel PCD.



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11365 6f19259b-4bc3-4df7-8a09-765794883524

2 files changed, 41 insertions, 3 deletions

diff --git a/MdePkg/Include/Library/DebugLib.h b/MdePkg/Include/Library/DebugLib.h
index 5e02dfd22..7bb964faa 100644
--- a/MdePkg/Include/Library/DebugLib.h
+++ b/MdePkg/Include/Library/DebugLib.h
@@ -77,9 +77,9 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 /**

   Prints a debug message to the debug output device if the specified error level is enabled.

 

-  If any bit in ErrorLevel is also set in PcdDebugPrintErrorLevel, then print 

-  the message specified by Format and the associated variable argument list to 

-  the debug output device.

+  If any bit in ErrorLevel is also set in DebugPrintErrorLevelLib function 

+  GetDebugPrintErrorLevel (), then print the message specified by Format and the 

+  associated variable argument list to the debug output device.

 

   If Format is NULL, then ASSERT().

 

diff --git a/MdePkg/Include/Library/DebugPrintErrorLevelLib.h b/MdePkg/Include/Library/DebugPrintErrorLevelLib.h
new file mode 100644
index 000000000..1e6bd65ba
--- /dev/null
+++ b/MdePkg/Include/Library/DebugPrintErrorLevelLib.h
@@ -0,0 +1,38 @@
+/** @file

+  Debug Print Error Level Library class

+

+  Copyright (c) 2011, Intel Corporation. All rights reserved.<BR>

+  This program and the accompanying materials

+  are licensed and made available under the terms and conditions of the BSD License

+  which accompanies this distribution.  The full text of the license may be found at

+  http://opensource.org/licenses/bsd-license.php.

+

+  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,

+  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

+

+**/

+

+/**

+  Returns the debug print error level mask for the current module.

+

+  @return  Debug print error level mask for the current module.

+

+**/

+UINT32

+EFIAPI

+GetDebugPrintErrorLevel (

+  VOID

+  );

+

+/**

+  Sets the global debug print error level mask fpr the entire platform.

+

+  @retval  TRUE   The debug print error level mask was sucessfully set.

+  @retval  FALSE  The debug print error level mask could not be set.

+

+**/

+BOOLEAN

+EFIAPI

+SetDebugPrintErrorLevel (

+  UINT32  ErrorLevel

+  );