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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@11399 6f19259b-4bc3-4df7-8a09-765794883524

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This commit is contained in:
ydong10 2011-03-15 00:52:27 +00:00
parent 640dfdc31d
commit d4e0afd826
1 changed files with 44 additions and 13 deletions
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57
MdeModulePkg/Library/DxeDebugPrintErrorLevelLib/DxeDebugPrintErrorLevelLib.c
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@ -25,6 +25,22 @@
///
/// Debug Mask Protocol function prototypes
///
/**
Retrieves the current debug print error level mask for a module are returns
it in CurrentDebugMask.
@param This The protocol instance pointer.
@param CurrentDebugMask Pointer to the debug print error level mask that
is returned.
@retval EFI_SUCCESS The current debug print error level mask was
returned in CurrentDebugMask.
@retval EFI_INVALID_PARAMETER CurrentDebugMask is NULL.
@retval EFI_DEVICE_ERROR The current debug print error level mask could
not be retrieved.
**/
EFI_STATUS
EFIAPI
GetDebugMask (
@ -32,6 +48,19 @@ GetDebugMask (
IN OUT UINTN *CurrentDebugMask
);
/**
Sets the current debug print error level mask for a module to the value
specified by NewDebugMask.
@param This The protocol instance pointer.
@param NewDebugMask The new debug print error level mask for this module.
@retval EFI_SUCCESS The current debug print error level mask was
set to the value specified by NewDebugMask.
@retval EFI_DEVICE_ERROR The current debug print error level mask could
not be set to the value specified by NewDebugMask.
**/
EFI_STATUS
EFIAPI
SetDebugMask (
@ -73,7 +102,7 @@ UINT32 mDebugPrintErrorLevel = 0;
/// the global debug print error level mask value. The UefiBootServicesTableLib
/// is not used to prevent a circular dependency between these libraries.
///
EFI_SYSTEM_TABLE *mST = NULL;
EFI_SYSTEM_TABLE *mSystemTable = NULL;
/**
The constructor function caches the PCI Express Base Address and creates a
@ -103,7 +132,7 @@ DxeDebugPrintErrorLevelLibConstructor (
//
// Install Debug Mask Protocol onto ImageHandle
//
mST = SystemTable;
mSystemTable = SystemTable;
Status = SystemTable->BootServices->InstallMultipleProtocolInterfaces (
&ImageHandle,
&gEfiDebugMaskProtocolGuid, &mDebugMaskProtocol,
@ -171,7 +200,7 @@ GetDebugPrintErrorLevel (
// This case should only occur if debug print is generated by a library
// constructor for this module
//
if (mST == NULL) {
if (mSystemTable == NULL) {
return PcdGet32 (PcdDebugPrintErrorLevel);
}
@ -185,15 +214,15 @@ GetDebugPrintErrorLevel (
//
// Make sure the TPL Level is low enough for EFI Variable Services to be called
//
CurrentTpl = mST->BootServices->RaiseTPL (TPL_HIGH_LEVEL);
mST->BootServices->RestoreTPL (CurrentTpl);
CurrentTpl = mSystemTable->BootServices->RaiseTPL (TPL_HIGH_LEVEL);
mSystemTable->BootServices->RestoreTPL (CurrentTpl);
if (CurrentTpl <= TPL_CALLBACK) {
//
// Attempt to retrieve the global debug print error level mask from the
// EFI Variable
//
Size = sizeof (GlobalErrorLevel);
Status = mST->RuntimeServices->GetVariable (
Status = mSystemTable->RuntimeServices->GetVariable (
DEBUG_MASK_VARIABLE_NAME,
&gEfiGenericVariableGuid,
NULL,
@ -225,9 +254,11 @@ GetDebugPrintErrorLevel (
/**
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.
@param ErrorLevel Global debug print error level
@retval TRUE The debug print error level mask was sucessfully set.
@retval FALSE The debug print error level mask could not be set.
**/
BOOLEAN
@ -244,19 +275,19 @@ SetDebugPrintErrorLevel (
//
// Make sure the constructor has been executed
//
if (mST != NULL) {
if (mSystemTable != NULL) {
//
// Make sure the TPL Level is low enough for EFI Variable Services
//
CurrentTpl = mST->BootServices->RaiseTPL (TPL_HIGH_LEVEL);
mST->BootServices->RestoreTPL (CurrentTpl);
CurrentTpl = mSystemTable->BootServices->RaiseTPL (TPL_HIGH_LEVEL);
mSystemTable->BootServices->RestoreTPL (CurrentTpl);
if (CurrentTpl <= TPL_CALLBACK) {
//
// Attempt to store the global debug print error level mask in an EFI Variable
//
GlobalErrorLevel = (UINTN)ErrorLevel;
Size = sizeof (GlobalErrorLevel);
Status = mST->RuntimeServices->SetVariable (
Status = mSystemTable->RuntimeServices->SetVariable (
DEBUG_MASK_VARIABLE_NAME,
&gEfiGenericVariableGuid,
(EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS),