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; EnableCache.Asm 15; 16; Abstract: 17; 18; Flush all caches with a WBINVD instruction, clear the CD bit of CR0 to 0, and clear 19; the NW bit of CR0 to 0 20; 21; Notes: 22; 23;------------------------------------------------------------------------------ 24 25 DEFAULT REL 26 SECTION .text 27 28;------------------------------------------------------------------------------ 29; VOID 30; EFIAPI 31; AsmEnableCache ( 32; VOID 33; ); 34;------------------------------------------------------------------------------ 35global ASM_PFX(AsmEnableCache) 36ASM_PFX(AsmEnableCache): 37 wbinvd 38 mov rax, cr0 39 btr rax, 29 40 btr rax, 30 41 mov cr0, rax 42 ret 43 44