RuntimeResetSystemLib.c

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#include <PiDxe.h>
#include <Library/ResetSystemLib.h>
#include <Library/UefiRuntimeServicesTableLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
 
EFI_EVENT                    mRuntimeResetSystemLibVirtualAddressChangeEvent;
static EFI_RUNTIME_SERVICES  *mInternalRT;
 
VOID
EFIAPI
ResetCold (
  VOID
  )
{
  mInternalRT->ResetSystem (EfiResetCold, EFI_SUCCESS, 0, NULL);
}
 
VOID
EFIAPI
ResetWarm (
  VOID
  )
{
  mInternalRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
}
 
VOID
EFIAPI
ResetShutdown (
  VOID
  )
{
  mInternalRT->ResetSystem (EfiResetShutdown, EFI_SUCCESS, 0, NULL);
}
 
VOID
EFIAPI
ResetPlatformSpecific (
  IN UINTN  DataSize,
  IN VOID   *ResetData
  )
{
  mInternalRT->ResetSystem (EfiResetPlatformSpecific, EFI_SUCCESS, DataSize, ResetData);
}
 
VOID
EFIAPI
ResetSystem (
  IN EFI_RESET_TYPE  ResetType,
  IN EFI_STATUS      ResetStatus,
  IN UINTN           DataSize,
  IN VOID            *ResetData OPTIONAL
  )
{
  mInternalRT->ResetSystem (ResetType, ResetStatus, DataSize, ResetData);
}
 
VOID
EFIAPI
RuntimeResetSystemLibVirtualAddressChange (
  IN EFI_EVENT  Event,
  IN VOID       *Context
  )
{
  mInternalRT->ConvertPointer (0, (VOID **)&mInternalRT);
}
 
EFI_STATUS
EFIAPI
RuntimeResetSystemLibConstruct (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS  Status;
 
  //
  // Library should not use the gRT directly, for it may be converted by other library instance.
  //
  mInternalRT = gRT;
 
  //
  // Register notify function for EVT_SIGNAL_VIRTUAL_ADDRESS_CHANGE
  //
  Status = gBS->CreateEventEx (
                  EVT_NOTIFY_SIGNAL,
                  TPL_NOTIFY,
                  RuntimeResetSystemLibVirtualAddressChange,
                  NULL,
                  &gEfiEventVirtualAddressChangeGuid,
                  &mRuntimeResetSystemLibVirtualAddressChangeEvent
                  );
  ASSERT_EFI_ERROR (Status);
 
  return EFI_SUCCESS;
}
 
EFI_STATUS
EFIAPI
RuntimeResetSystemLibDeconstruct (
  IN EFI_HANDLE        ImageHandle,
  IN EFI_SYSTEM_TABLE  *SystemTable
  )
{
  EFI_STATUS  Status;
 
  ASSERT (gBS != NULL);
  Status = gBS->CloseEvent (mRuntimeResetSystemLibVirtualAddressChangeEvent);
  ASSERT_EFI_ERROR (Status);
 
  return EFI_SUCCESS;
}