MdePkg/Include/Library/CpuLib.h

   1 /** @file
   2   Provides CPU architecture specific functions that can not be defined
   3   in the Base Library due to dependencies on the PAL Library
   4
   5   The CPU Library provides services to flush CPU TLBs and place the CPU in a sleep state.
   6   The implementation of these services on Itanium CPUs requires the use of PAL Calls.
   7   PAL Calls require PEI and DXE specific mechanisms to look up PAL Entry Point.
   8   As a result, these services could not be defined in the Base Library.
   9
  10 Copyright (c) 2006 - 2008, Intel Corporation<BR>
  11 All rights reserved. This program and the accompanying materials
  12 are licensed and made available under the terms and conditions of the BSD License
  13 which accompanies this distribution.  The full text of the license may be found at
  14 http://opensource.org/licenses/bsd-license.php
  15
  16 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  17 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  18
  19 **/
  20
  21 #ifndef __CPU_LIB_H__
  22 #define __CPU_LIB_H__
  23
  24 /**
  25   Places the CPU in a sleep state until an interrupt is received.
  26
  27   Places the CPU in a sleep state until an interrupt is received. If interrupts
  28   are disabled prior to calling this function, then the CPU will be placed in a
  29   sleep state indefinitely.
  30
  31 **/
  32 VOID
  33 EFIAPI
  34 CpuSleep (
  35   VOID
  36   );
  37
  38 /**
  39   Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
  40
  41   Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
  42
  43 **/
  44 VOID
  45 EFIAPI
  46 CpuFlushTlb (
  47   VOID
  48   );
  49
  50
  51 #endif