1;------------------------------------------------------------------------------ 2; 3; Copyright (c) 2006 - 2008, 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; Module Name: 13; 14; DisableCache.Asm 15; 16; Abstract: 17; 18; Set the CD bit of CR0 to 1, clear the NW bit of CR0 to 0, and flush all caches with a 19; WBINVD instruction. 20; 21; Notes: 22; 23;------------------------------------------------------------------------------ 24 25 .code 26 27;------------------------------------------------------------------------------ 28; VOID 29; EFIAPI 30; AsmDisableCache ( 31; VOID 32; ); 33;------------------------------------------------------------------------------ 34AsmDisableCache PROC 35 mov rax, cr0 36 bts rax, 30 37 btr rax, 29 38 mov cr0, rax 39 wbinvd 40 ret 41AsmDisableCache ENDP 42 43 END 44