/**
Creates an event for each entry in a table that is fired everytime a Protocol
of a specific type is installed.
@param Entry Pointer to EFI_CORE_PROTOCOL_NOTIFY_ENTRY.
**/
VOID
CoreNotifyOnProtocolEntryTable (
EFI_CORE_PROTOCOL_NOTIFY_ENTRY *Entry
)
{
EFI_STATUS Status;
for (; Entry->ProtocolGuid != NULL; Entry++) {
//
// Create the event
//
Status = CoreCreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
GenericProtocolNotify,
Entry,
&Entry->Event
);
ASSERT_EFI_ERROR(Status);
//
// Register for protocol notifactions on this event
//
Status = CoreRegisterProtocolNotify (
Entry->ProtocolGuid,
Entry->Event,
&Entry->Registration
);
ASSERT_EFI_ERROR(Status);
}
}
/**
Initializes timer support.
**/
VOID
CoreInitializeTimer (
VOID
)
{
EFI_STATUS Status;
Status = CoreCreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_HIGH_LEVEL - 1,
CoreCheckTimers,
NULL,
&mEfiCheckTimerEvent
);
ASSERT_EFI_ERROR (Status);
}
/**
Initialize Memory Protection support.
**/
VOID
EFIAPI
CoreInitializeMemoryProtection (
VOID
)
{
EFI_STATUS Status;
EFI_EVENT Event;
EFI_EVENT EndOfDxeEvent;
VOID *Registration;
mImageProtectionPolicy = PcdGet32(PcdImageProtectionPolicy);
InitializeListHead (&mProtectedImageRecordList);
//
// Sanity check the PcdDxeNxMemoryProtectionPolicy setting:
// - code regions should have no EFI_MEMORY_XP attribute
// - EfiConventionalMemory and EfiBootServicesData should use the
// same attribute
//
ASSERT ((GetPermissionAttributeForMemoryType (EfiBootServicesCode) & EFI_MEMORY_XP) == 0);
ASSERT ((GetPermissionAttributeForMemoryType (EfiRuntimeServicesCode) & EFI_MEMORY_XP) == 0);
ASSERT ((GetPermissionAttributeForMemoryType (EfiLoaderCode) & EFI_MEMORY_XP) == 0);
ASSERT (GetPermissionAttributeForMemoryType (EfiBootServicesData) ==
GetPermissionAttributeForMemoryType (EfiConventionalMemory));
if (mImageProtectionPolicy != 0 || PcdGet64 (PcdDxeNxMemoryProtectionPolicy) != 0) {
Status = CoreCreateEvent (
EVT_NOTIFY_SIGNAL,
TPL_CALLBACK,
MemoryProtectionCpuArchProtocolNotify,
NULL,
&Event
);
ASSERT_EFI_ERROR(Status);
//
// Register for protocol notifactions on this event
//
Status = CoreRegisterProtocolNotify (
&gEfiCpuArchProtocolGuid,
Event,
&Registration
);
ASSERT_EFI_ERROR(Status);
}
//
// Register a callback to disable NULL pointer detection at EndOfDxe
//
if ((PcdGet8 (PcdNullPointerDetectionPropertyMask) & (BIT0|BIT7))
== (BIT0|BIT7)) {
Status = CoreCreateEventEx (
EVT_NOTIFY_SIGNAL,
TPL_NOTIFY,
DisableNullDetectionAtTheEndOfDxe,
NULL,
&gEfiEndOfDxeEventGroupGuid,
&EndOfDxeEvent
);
ASSERT_EFI_ERROR (Status);
}
return ;
}