QuarkPlatformPkg/Application/ForceRecovery/ForceRecovery.c

   1 /** @file
   2   Application that sets a sticky bit to force recovery on next reset.
   3
   4   Copyright (c) 2016, 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 <Uefi.h>
  16
  17 #include <Library/UefiRuntimeServicesTableLib.h>
  18 #include <Library/QNCAccessLib.h>
  19
  20 /**
  21   The user Entry Point for Application. The user code starts with this function
  22   as the real entry point for the application.
  23
  24   @param[in] ImageHandle    The firmware allocated handle for the EFI image.
  25   @param[in] SystemTable    A pointer to the EFI System Table.
  26
  27   @retval EFI_SUCCESS       The entry point is executed successfully.
  28   @retval other             Some error occurs when executing this entry point.
  29
  30 **/
  31 EFI_STATUS
  32 EFIAPI
  33 UefiMain (
  34   IN EFI_HANDLE        ImageHandle,
  35   IN EFI_SYSTEM_TABLE  *SystemTable
  36   )
  37 {
  38   //
  39   // Set 'B_CFG_STICKY_RW_FORCE_RECOVERY' sticky bit so we know we need to do a recovery following warm reset
  40   //
  41   QNCAltPortWrite (
  42     QUARK_SCSS_SOC_UNIT_SB_PORT_ID,
  43     QUARK_SCSS_SOC_UNIT_CFG_STICKY_RW,
  44     QNCAltPortRead (QUARK_SCSS_SOC_UNIT_SB_PORT_ID, QUARK_SCSS_SOC_UNIT_CFG_STICKY_RW) | B_CFG_STICKY_RW_FORCE_RECOVERY
  45     );
  46
  47   //
  48   // Do a warm reset
  49   //
  50   gRT->ResetSystem (EfiResetWarm, EFI_SUCCESS, 0, NULL);
  51
  52   return EFI_SUCCESS;
  53 }