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Update SMM Core to use SMM Mode as soon as SMM Mode is available

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Signed-off-by: mdkinney
Reviewed-by: rsun3



git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12190 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
mdkinney
2011-08-24 06:49:21 +00:00
parent ad9aa87b56
commit 5657b268e7
3 changed files with 178 additions and 46 deletions
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141
MdeModulePkg/Core/PiSmmCore/PiSmmIpl.c
View File

@@ -140,6 +140,20 @@ SmmIplReadyToLockEventNotify (
@param Event The Event that is being processed, not used.
@param Context Event Context, not used.
**/
VOID
EFIAPI
SmmIplDxeDispatchEventNotify (
IN EFI_EVENT Event,
IN VOID *Context
);
/**
Event notification that is fired when a GUIDed Event Group is signaled.
@param Event The Event that is being processed, not used.
@param Context Event Context, not used.
**/
VOID
EFIAPI
@@ -175,6 +189,7 @@ typedef struct {
EFI_GUID *Guid;
EFI_EVENT_NOTIFY NotifyFunction;
VOID *NotifyContext;
EFI_TPL NotifyTpl;
EFI_EVENT Event;
} SMM_IPL_EVENT_NOTIFICATION;
@@ -240,39 +255,39 @@ SMM_IPL_EVENT_NOTIFICATION mSmmIplEvents[] = {
// the associated event is immediately signalled, so the notification function will be executed and the
// SMM Configuration Protocol will be found if it is already in the handle database.
//
{ TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, NULL },
{ TRUE, FALSE, &gEfiSmmConfigurationProtocolGuid, SmmIplSmmConfigurationEventNotify, &gEfiSmmConfigurationProtocolGuid, TPL_NOTIFY, NULL },
//
// Declare protocl notification on DxeSmmReadyToLock protocols. When this notification is etablished,
// the associated event is immediately signalled, so the notification function will be executed and the
// DXE SMM Ready To Lock Protocol will be found if it is already in the handle database.
//
{ TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, NULL },
{ TRUE, TRUE, &gEfiDxeSmmReadyToLockProtocolGuid, SmmIplReadyToLockEventNotify, &gEfiDxeSmmReadyToLockProtocolGuid, TPL_CALLBACK, NULL },
//
// Declare event notification on the DXE Dispatch Event Group. This event is signaled by the DXE Core
// each time the DXE Core dispatcher has completed its work. When this event is signalled, the SMM Core
// if notified, so the SMM Core can dispatch SMM drivers.
//
{ FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplGuidedEventNotify, &gEfiEventDxeDispatchGuid, NULL },
{ FALSE, TRUE, &gEfiEventDxeDispatchGuid, SmmIplDxeDispatchEventNotify, &gEfiEventDxeDispatchGuid, TPL_CALLBACK, NULL },
//
// Declare event notification on Ready To Boot Event Group. This is an extra event notification that is
// used to make sure SMRAM is locked before any boot options are processed.
//
{ FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, NULL },
{ FALSE, TRUE, &gEfiEventReadyToBootGuid, SmmIplReadyToLockEventNotify, &gEfiEventReadyToBootGuid, TPL_CALLBACK, NULL },
//
// Declare event notification on Legacy Boot Event Group. This is used to inform the SMM Core that the platform
// is performing a legacy boot operation, and that the UEFI environment is no longer available and the SMM Core
// must guarantee that it does not access any UEFI related structures outside of SMRAM.
//
{ FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, NULL },
{ FALSE, FALSE, &gEfiEventLegacyBootGuid, SmmIplGuidedEventNotify, &gEfiEventLegacyBootGuid, TPL_CALLBACK, NULL },
//
// Declare event notification on SetVirtualAddressMap() Event Group. This is used to convert gSmmCorePrivate
// and mSmmControl2 from physical addresses to virtual addresses.
//
{ FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, NULL },
{ FALSE, FALSE, &gEfiEventVirtualAddressChangeGuid, SmmIplSetVirtualAddressNotify, NULL, TPL_CALLBACK, NULL },
//
// Terminate the table of event notifications
//
{ FALSE, FALSE, NULL, NULL, NULL, NULL }
{ FALSE, FALSE, NULL, NULL, NULL, TPL_CALLBACK, NULL }
};
/**
@@ -493,7 +508,7 @@ SmmCommunicationCommunicate (
}
/**
Event notification that is fired when DxeDispatch Event Group is signaled.
Event notification that is fired when GUIDed Event Group is signaled.
@param Event The Event that is being processed, not used.
@param Context Event Context, not used.
@@ -523,6 +538,86 @@ SmmIplGuidedEventNotify (
SmmCommunicationCommunicate (&mSmmCommunication, &CommunicateHeader, &Size);
}
/**
Event notification that is fired when DxeDispatch Event Group is signaled.
@param Event The Event that is being processed, not used.
@param Context Event Context, not used.
**/
VOID
EFIAPI
SmmIplDxeDispatchEventNotify (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EFI_SMM_COMMUNICATE_HEADER CommunicateHeader;
UINTN Size;
EFI_STATUS Status;
//
// Keep calling the SMM Core Dispatcher until there is no request to restart it.
//
while (TRUE) {
//
// Use Guid to initialize EFI_SMM_COMMUNICATE_HEADER structure
// Clear the buffer passed into the Software SMI. This buffer will return
// the status of the SMM Core Dispatcher.
//
CopyGuid (&CommunicateHeader.HeaderGuid, (EFI_GUID *)Context);
CommunicateHeader.MessageLength = 1;
CommunicateHeader.Data[0] = 0;
//
// Generate the Software SMI and return the result
//
Size = sizeof (CommunicateHeader);
SmmCommunicationCommunicate (&mSmmCommunication, &CommunicateHeader, &Size);
//
// Return if there is no request to restart the SMM Core Dispatcher
//
if (CommunicateHeader.Data[0] != COMM_BUFFER_SMM_DISPATCH_RESTART) {
return;
}
//
// Attempt to reset SMRAM cacheability to UC
// Assume CPU AP is available at this time
//
Status = gDS->SetMemorySpaceAttributes(
mSmramCacheBase,
mSmramCacheSize,
EFI_MEMORY_UC
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));
}
//
// Close all SMRAM ranges to protect SMRAM
//
Status = mSmmAccess->Close (mSmmAccess);
ASSERT_EFI_ERROR (Status);
//
// Print debug message that the SMRAM window is now closed.
//
DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));
//
// Lock the SMRAM (Note: Locking SMRAM may not be supported on all platforms)
//
mSmmAccess->Lock (mSmmAccess);
//
// Print debug message that the SMRAM window is now locked
//
DEBUG ((DEBUG_INFO, "SMM IPL locked SMRAM window\n"));
}
}
/**
Event notification that is fired every time a gEfiSmmConfigurationProtocol installs.
@@ -555,7 +650,7 @@ SmmIplSmmConfigurationEventNotify (
ASSERT_EFI_ERROR (Status);
//
// Set flag to indicate that the SM< Entry Point has been registered which
// Set flag to indicate that the SMM Entry Point has been registered which
// means that SMIs are now fully operational.
//
gSmmCorePrivate->SmmEntryPointRegistered = TRUE;
@@ -564,30 +659,6 @@ SmmIplSmmConfigurationEventNotify (
// Print debug message showing SMM Core entry point address.
//
DEBUG ((DEBUG_INFO, "SMM IPL registered SMM Entry Point address %p\n", (VOID *)(UINTN)gSmmCorePrivate->SmmEntryPoint));
//
// Attempt to reset SMRAM cacheability to UC
// Assume CPU AP is available at this time
//
Status = gDS->SetMemorySpaceAttributes(
mSmramCacheBase,
mSmramCacheSize,
EFI_MEMORY_UC
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_WARN, "SMM IPL failed to reset SMRAM window to EFI_MEMORY_UC\n"));
}
//
// Close all SMRAM ranges to protect SMRAM
//
Status = mSmmAccess->Close (mSmmAccess);
ASSERT_EFI_ERROR (Status);
//
// Print debug message that the SMRAM window is now closed.
//
DEBUG ((DEBUG_INFO, "SMM IPL closed SMRAM window\n"));
}
/**
@@ -1190,7 +1261,7 @@ SmmIplEntry (
if (mSmmIplEvents[Index].Protocol) {
mSmmIplEvents[Index].Event = EfiCreateProtocolNotifyEvent (
mSmmIplEvents[Index].Guid,
TPL_CALLBACK,
mSmmIplEvents[Index].NotifyTpl,
mSmmIplEvents[Index].NotifyFunction,
mSmmIplEvents[Index].NotifyContext,
&Registration
@@ -1198,7 +1269,7 @@ SmmIplEntry (
} else {
Status = gBS->CreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
mSmmIplEvents[Index].NotifyTpl,
mSmmIplEvents[Index].NotifyFunction,
mSmmIplEvents[Index].NotifyContext,
mSmmIplEvents[Index].Guid,