mirror of https://github.com/acidanthera/audk.git
180 lines
2.9 KiB
C
180 lines
2.9 KiB
C
/*++
|
|
|
|
Copyright (c) 2006, 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:
|
|
|
|
CpuIA32.c
|
|
|
|
Abstract:
|
|
|
|
--*/
|
|
|
|
#include "CpuIA32.h"
|
|
|
|
VOID
|
|
EfiHalt (VOID)
|
|
{
|
|
__asm {
|
|
hlt
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiWbinvd (VOID)
|
|
{
|
|
__asm {
|
|
wbinvd
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiInvd (VOID)
|
|
{
|
|
__asm {
|
|
invd
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiCpuid (IN UINT32 RegisterInEax,
|
|
OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
|
|
{
|
|
__asm {
|
|
pushad
|
|
|
|
mov eax, RegisterInEax
|
|
cpuid
|
|
cmp Reg, 0
|
|
je _Exit
|
|
mov edi, DWORD PTR Reg
|
|
|
|
mov DWORD PTR [edi].RegEax, eax ; Reg->RegEax
|
|
mov DWORD PTR [edi].RegEbx, ebx ; Reg->RegEbx
|
|
mov DWORD PTR [edi].RegEcx, ecx ; Reg->RegEcx
|
|
mov DWORD PTR [edi].RegEdx, edx ; Reg->RegEdx
|
|
|
|
_Exit:
|
|
popad
|
|
}
|
|
}
|
|
|
|
UINT64
|
|
EfiReadMsr (IN UINT32 Index)
|
|
{
|
|
__asm {
|
|
mov ecx, Index
|
|
rdmsr
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiWriteMsr (
|
|
IN UINT32 Index,
|
|
IN UINT64 Value
|
|
)
|
|
{
|
|
__asm {
|
|
mov ecx, Index
|
|
mov eax, DWORD PTR Value[0]
|
|
mov edx, DWORD PTR Value[4]
|
|
wrmsr
|
|
}
|
|
}
|
|
|
|
UINT64
|
|
EfiReadTsc (VOID)
|
|
{
|
|
__asm {
|
|
rdtsc
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiDisableCache (VOID)
|
|
{
|
|
__asm {
|
|
mov eax, cr0
|
|
bswap eax
|
|
and al, 60h
|
|
cmp al, 60h
|
|
je Exit
|
|
mov eax, cr0
|
|
or eax, 060000000h
|
|
mov cr0, eax
|
|
wbinvd
|
|
Exit:
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiEnableCache (VOID)
|
|
{
|
|
__asm {
|
|
invd
|
|
mov eax, cr0
|
|
and eax, 09fffffffh
|
|
mov cr0, eax
|
|
}
|
|
}
|
|
|
|
UINT32
|
|
EfiGetEflags (
|
|
VOID
|
|
)
|
|
{
|
|
__asm {
|
|
pushfd
|
|
pop eax
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiDisableInterrupts (VOID)
|
|
{
|
|
__asm {
|
|
cli
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiEnableInterrupts (
|
|
VOID
|
|
)
|
|
{
|
|
__asm {
|
|
sti
|
|
}
|
|
}
|
|
|
|
VOID
|
|
EfiCpuidExt (
|
|
IN UINT32 RegisterInEax,
|
|
IN UINT32 CacheLevel,
|
|
OUT EFI_CPUID_REGISTER *Regs
|
|
)
|
|
{
|
|
__asm {
|
|
pushad
|
|
|
|
mov eax, RegisterInEax
|
|
mov ecx, CacheLevel
|
|
cpuid
|
|
mov edi, DWORD PTR Regs
|
|
|
|
mov DWORD PTR [edi].RegEax, eax ; Reg->RegEax
|
|
mov DWORD PTR [edi].RegEbx, ebx ; Reg->RegEbx
|
|
mov DWORD PTR [edi].RegEcx, ecx ; Reg->RegEcx
|
|
mov DWORD PTR [edi].RegEdx, edx ; Reg->RegEdx
|
|
|
|
popad
|
|
}
|
|
}
|