mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-11-28 12:25:19 +01:00
46 lines
1.0 KiB
NASM
46 lines
1.0 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
|
|
; SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
;
|
|
; Module Name:
|
|
;
|
|
; FlushCacheLine.Asm
|
|
;
|
|
; Abstract:
|
|
;
|
|
; AsmFlushCacheLine function
|
|
;
|
|
; Notes:
|
|
;
|
|
;------------------------------------------------------------------------------
|
|
|
|
SECTION .text
|
|
|
|
;------------------------------------------------------------------------------
|
|
; VOID *
|
|
; EFIAPI
|
|
; AsmFlushCacheLine (
|
|
; IN VOID *LinearAddress
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
global ASM_PFX(AsmFlushCacheLine)
|
|
ASM_PFX(AsmFlushCacheLine):
|
|
;
|
|
; If the CPU does not support CLFLUSH instruction,
|
|
; then promote flush range to flush entire cache.
|
|
;
|
|
mov eax, 1
|
|
push ebx
|
|
cpuid
|
|
pop ebx
|
|
mov eax, [esp + 4]
|
|
test edx, BIT19
|
|
jz .0
|
|
clflush [eax]
|
|
ret
|
|
.0:
|
|
wbinvd
|
|
ret
|
|
|