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 processors 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 - 2018, Intel Corporation. All rights reserved.<BR>
  11 SPDX-License-Identifier: BSD-2-Clause-Patent
  12
  13 **/
  14
  15 #ifndef __CPU_LIB_H__
  16 #define __CPU_LIB_H__
  17
  18 /**
  19   Places the CPU in a sleep state until an interrupt is received.
  20
  21   Places the CPU in a sleep state until an interrupt is received. If interrupts
  22   are disabled prior to calling this function, then the CPU will be placed in a
  23   sleep state indefinitely.
  24
  25 **/
  26 VOID
  27 EFIAPI
  28 CpuSleep (
  29   VOID
  30   );
  31
  32 /**
  33   Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
  34
  35   Flushes all the Translation Lookaside Buffers(TLB) entries in a CPU.
  36
  37 **/
  38 VOID
  39 EFIAPI
  40 CpuFlushTlb (
  41   VOID
  42   );
  43
  44
  45 #endif