IntelFspPkg/Library/BaseCacheAsRamLibNull/DisableCacheAsRamNull.c

   1 /** @file
   2
   3   Copyright (c) 2014, Intel Corporation. All rights reserved.<BR>
   4   This program and the accompanying materials
   5   are licensed and made available under the terms and conditions of the BSD License
   6   which accompanies this distribution.  The full text of the license may be found at
   7   http://opensource.org/licenses/bsd-license.php.
   8
   9   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  10   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  11
  12 **/
  13
  14 #include <Uefi.h>
  15 #include <Library/BaseLib.h>
  16 #include <Library/CacheAsRamLib.h>
  17
  18 /**
  19   This function disable CAR.
  20
  21   @param[in] DisableCar       TRUE means use INVD, FALSE means use WBINVD
  22
  23 **/
  24 VOID
  25 EFIAPI
  26 DisableCacheAsRam (
  27   IN BOOLEAN                   DisableCar
  28   )
  29 {
  30   //
  31   // Disable CAR
  32   //
  33
  34   if (DisableCar) {
  35     AsmInvd ();
  36   } else {
  37     AsmWbinvd();
  38   }
  39
  40   return ;
  41 }