mirror of https://github.com/acidanthera/audk.git
40 lines
1.2 KiB
ArmAsm
40 lines
1.2 KiB
ArmAsm
#------------------------------------------------------------------------------
|
|
#
|
|
# Copyright (c) 2006 - 2008, Intel Corporation
|
|
# All rights reserved. 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:
|
|
#
|
|
# EnableCache.S
|
|
#
|
|
# Abstract:
|
|
#
|
|
# Flush all caches with a WBINVD instruction, clear the CD bit of CR0 to 0, and clear
|
|
# the NW bit of CR0 to 0
|
|
#
|
|
# Notes:
|
|
#
|
|
#------------------------------------------------------------------------------
|
|
|
|
#------------------------------------------------------------------------------
|
|
# VOID
|
|
# EFIAPI
|
|
# AsmEnableCache (
|
|
# VOID
|
|
# );
|
|
#------------------------------------------------------------------------------
|
|
.globl ASM_PFX(AsmEnableCache)
|
|
ASM_PFX(AsmEnableCache):
|
|
wbinvd
|
|
movl %cr0, %eax
|
|
btrl $30, %eax
|
|
btrl $29, %eax
|
|
movl %eax, %cr0
|
|
ret
|