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Add EDKII_VARIABLE_LOCK_PROTOCOL and the implementation in MdeModulePkg variable drivers.

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Add code in BdsDxe driver to call the protocol to mark the read-only variables defined in the UEFI Spec.

Signed-off-by: Ruiyu Ni <ruiyu.ni@intel.com>
Reviewed-by: Guo Dong <guo.dong@intel.com>
Reviewed-by: Star Zeng <star.zeng@intel.com>

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@14372 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
niruiyu
2013-05-17 03:49:35 +00:00
parent efffd9c17e
commit ff8438477f
14 changed files with 487 additions and 30 deletions
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52
MdeModulePkg/Universal/Variable/RuntimeDxe/VariableDxe.c
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@@ -3,7 +3,7 @@
Implement all four UEFI Runtime Variable services for the nonvolatile
and volatile storage space and install variable architecture protocol.
Copyright (c) 2006 - 2012, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2013, 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
@@ -21,6 +21,9 @@ extern VARIABLE_INFO_ENTRY *gVariableInfo;
EFI_HANDLE mHandle = NULL;
EFI_EVENT mVirtualAddressChangeEvent = NULL;
EFI_EVENT mFtwRegistration = NULL;
extern BOOLEAN mEndOfDxe;
extern BOOLEAN mEnableLocking;
EDKII_VARIABLE_LOCK_PROTOCOL mVariableLock = { VariableLockRequestToLock };
/**
Return TRUE if ExitBootServices () has been called.
@@ -255,12 +258,34 @@ OnReadyToBoot (
VOID *Context
)
{
//
// Set the End Of DXE bit in case the EFI_END_OF_DXE_EVENT_GROUP_GUID event is not signaled.
//
mEndOfDxe = TRUE;
ReclaimForOS ();
if (FeaturePcdGet (PcdVariableCollectStatistics)) {
gBS->InstallConfigurationTable (&gEfiVariableGuid, gVariableInfo);
}
}
/**
Notification function of EFI_END_OF_DXE_EVENT_GROUP_GUID event group.
This is a notification function registered on EFI_END_OF_DXE_EVENT_GROUP_GUID event group.
@param Event Event whose notification function is being invoked.
@param Context Pointer to the notification function's context.
**/
VOID
EFIAPI
OnEndOfDxe (
EFI_EVENT Event,
VOID *Context
)
{
mEndOfDxe = TRUE;
}
/**
Fault Tolerant Write protocol notification event handler.
@@ -375,11 +400,20 @@ VariableServiceInitialize (
)
{
EFI_STATUS Status;
EFI_EVENT ReadyToBootEvent;
EFI_EVENT ReadyToBootEvent;
EFI_EVENT EndOfDxeEvent;
Status = VariableCommonInitialize ();
ASSERT_EFI_ERROR (Status);
Status = gBS->InstallMultipleProtocolInterfaces (
&mHandle,
&gEdkiiVariableLockProtocolGuid,
&mVariableLock,
NULL
);
ASSERT_EFI_ERROR (Status);
SystemTable->RuntimeServices->GetVariable = VariableServiceGetVariable;
SystemTable->RuntimeServices->GetNextVariableName = VariableServiceGetNextVariableName;
SystemTable->RuntimeServices->SetVariable = VariableServiceSetVariable;
@@ -426,6 +460,20 @@ VariableServiceInitialize (
NULL,
&ReadyToBootEvent
);
ASSERT_EFI_ERROR (Status);
//
// Register the event handling function to set the End Of DXE flag.
//
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
OnEndOfDxe,
NULL,
&gEfiEndOfDxeEventGroupGuid,
&EndOfDxeEvent
);
ASSERT_EFI_ERROR (Status);
return EFI_SUCCESS;
}