PcAtChipsetPkg/KbcResetDxe/Reset.c

   1 /** @file
   2   Reset Architectural Protocol implementation
   3
   4 Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved. <BR>
   5 This program and the accompanying materials
   6 are licensed and made available under the terms and conditions of the BSD License
   7 which accompanies this distribution.  The full text of the license may be found at
   8 http://opensource.org/licenses/bsd-license.php
   9
  10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 #include "Reset.h"
  16
  17 /**
  18   Reset the system.
  19
  20   @param ResetType       warm or cold
  21   @param ResetStatus     possible cause of reset
  22   @param DataSize        Size of ResetData in bytes
  23   @param ResetData       Optional Unicode string
  24
  25 **/
  26 VOID
  27 EFIAPI
  28 KbcResetSystem (
  29   IN EFI_RESET_TYPE   ResetType,
  30   IN EFI_STATUS       ResetStatus,
  31   IN UINTN            DataSize,
  32   IN VOID             *ResetData OPTIONAL
  33   )
  34 {
  35   UINT8   Data;
  36
  37   switch (ResetType) {
  38   case EfiResetWarm:
  39   case EfiResetCold:
  40   case EfiResetShutdown:
  41     Data = 0xfe;
  42     IoWrite8 (0x64, Data);
  43     break;
  44
  45   default:
  46     return ;
  47   }
  48
  49   //
  50   // Given we should have reset getting here would be bad
  51   //
  52   ASSERT (FALSE);
  53 }
  54