| ;------------------------------------------------------------------------------ | |
| ; | |
| ; Copyright (c) 2006 - 2008, Intel Corporation. All rights reserved.<BR> | |
| ; This program and the accompanying materials | |
| ; are licensed and made available under the terms and conditions of the BSD License | |
| ; which accompanies this distribution. The full text of the license may be found at | |
| ; http://opensource.org/licenses/bsd-license.php. | |
| ; | |
| ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
| ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
| ; | |
| ; Module Name: | |
| ; | |
| ; DisableCache.Asm | |
| ; | |
| ; Abstract: | |
| ; | |
| ; Set the CD bit of CR0 to 1, clear the NW bit of CR0 to 0, and flush all caches with a | |
| ; WBINVD instruction. | |
| ; | |
| ; Notes: | |
| ; | |
| ;------------------------------------------------------------------------------ | |
| SECTION .text | |
| ;------------------------------------------------------------------------------ | |
| ; VOID | |
| ; EFIAPI | |
| ; AsmDisableCache ( | |
| ; VOID | |
| ; ); | |
| ;------------------------------------------------------------------------------ | |
| global ASM_PFX(AsmDisableCache) | |
| ASM_PFX(AsmDisableCache): | |
| mov eax, cr0 | |
| bts eax, 30 | |
| btr eax, 29 | |
| mov cr0, eax | |
| wbinvd | |
| ret | |