VariablePolicyExtraInitRuntimeDxe.c

 
#include <Library/UefiBootServicesTableLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
 
extern EFI_GET_VARIABLE  mGetVariableHelper;
extern UINT8             *mPolicyTable;
STATIC BOOLEAN           mIsVirtualAddrConverted;
STATIC EFI_EVENT         mVariablePolicyLibVirtualAddressChangeEvent = NULL;
 
STATIC
VOID
EFIAPI
VariablePolicyLibVirtualAddressCallback (
  IN  EFI_EVENT  Event,
  IN  VOID       *Context
  )
{
  gRT->ConvertPointer (0, (VOID **)&mPolicyTable);
  gRT->ConvertPointer (0, (VOID **)&mGetVariableHelper);
  mIsVirtualAddrConverted = TRUE;
}
 
EFI_STATUS
VariablePolicyExtraInit (
  VOID
  )
{
  return gBS->CreateEventEx (
                EVT_NOTIFY_SIGNAL,
                TPL_NOTIFY,
                VariablePolicyLibVirtualAddressCallback,
                NULL,
                &gEfiEventVirtualAddressChangeGuid,
                &mVariablePolicyLibVirtualAddressChangeEvent
                );
}
 
EFI_STATUS
VariablePolicyExtraDeinit (
  VOID
  )
{
  EFI_STATUS  Status;
 
  Status = EFI_SUCCESS;
  if (mIsVirtualAddrConverted) {
    Status = gBS->CloseEvent (mVariablePolicyLibVirtualAddressChangeEvent);
  } else {
    Status = EFI_SUCCESS;
  }
 
  return Status;
}