EdkCompatibilityPkg/Foundation/Library/EdkIIGlueLib/Library/BaseTimerLibLocalApic/X64/X86LocalApicTimerInitialize.asm

   1 ; Copyright (c) 2007, Intel Corporation. All rights reserved.<BR>
   2 ; This program and the accompanying materials
   3 ; are licensed and made available under the terms and conditions of the BSD License
   4 ; which accompanies this distribution.  The full text of the license may be found at
   5 ; http://opensource.org/licenses/bsd-license.php
   6 ;
   7 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   8 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
   9 ;
  10 ; Module Name:
  11 ;
  12 ;   x86LocalApicTimerInitialize.Asm
  13 ;
  14 ; Abstract:
  15 ;
  16 ;   Initialize Local Apic Timer
  17 ;
  18 ; Notes:
  19 ;
  20 ;------------------------------------------------------------------------------
  21
  22     .code
  23
  24 EXTERNDEF  InternalX86GetApicBase:PROC
  25
  26 ;------------------------------------------------------------------------------
  27 ; VOID
  28 ; EFIAPI
  29 ; CpuInitLocalApicTimer (
  30 ;   VOID
  31 ;   );
  32 ;------------------------------------------------------------------------------
  33 CpuInitLocalApicTimer    PROC
  34     sub rsp, 28h  ;Reserve home addresses and make RSP 16-byte aligned
  35     call InternalX86GetApicBase
  36     add rsp, 28h
  37     mov dword ptr [rax + 3e0h], 0ah
  38     bts dword ptr [rax + 320h], 17
  39     mov dword ptr [rax + 380h], -1
  40     ret
  41 CpuInitLocalApicTimer    ENDP
  42
  43     END