mirror of https://github.com/acidanthera/audk.git
180 lines
2.9 KiB
C
180 lines
2.9 KiB
C
/*++
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Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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CpuIA32.c
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Abstract:
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--*/
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#include "CpuIA32.h"
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VOID
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EfiHalt (VOID)
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{
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__asm {
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hlt
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}
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}
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VOID
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EfiWbinvd (VOID)
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{
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__asm {
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wbinvd
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}
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}
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VOID
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EfiInvd (VOID)
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{
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__asm {
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invd
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}
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}
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VOID
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EfiCpuid (IN UINT32 RegisterInEax,
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OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
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{
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__asm {
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pushad
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mov eax, RegisterInEax
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cpuid
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cmp Reg, 0
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je _Exit
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mov edi, DWORD PTR Reg
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mov DWORD PTR [edi].RegEax, eax ; Reg->RegEax
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mov DWORD PTR [edi].RegEbx, ebx ; Reg->RegEbx
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mov DWORD PTR [edi].RegEcx, ecx ; Reg->RegEcx
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mov DWORD PTR [edi].RegEdx, edx ; Reg->RegEdx
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_Exit:
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popad
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}
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}
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UINT64
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EfiReadMsr (IN UINT32 Index)
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{
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__asm {
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mov ecx, Index
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rdmsr
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}
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}
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VOID
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EfiWriteMsr (
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IN UINT32 Index,
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IN UINT64 Value
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)
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{
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__asm {
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mov ecx, Index
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mov eax, DWORD PTR Value[0]
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mov edx, DWORD PTR Value[4]
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wrmsr
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}
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}
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UINT64
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EfiReadTsc (VOID)
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{
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__asm {
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rdtsc
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}
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}
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VOID
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EfiDisableCache (VOID)
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{
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__asm {
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mov eax, cr0
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bswap eax
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and al, 60h
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cmp al, 60h
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je Exit
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mov eax, cr0
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or eax, 060000000h
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mov cr0, eax
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wbinvd
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Exit:
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}
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}
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VOID
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EfiEnableCache (VOID)
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{
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__asm {
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invd
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mov eax, cr0
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and eax, 09fffffffh
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mov cr0, eax
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}
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}
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UINT32
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EfiGetEflags (
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VOID
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)
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{
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__asm {
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pushfd
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pop eax
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}
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}
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VOID
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EfiDisableInterrupts (VOID)
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{
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__asm {
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cli
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}
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}
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VOID
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EfiEnableInterrupts (
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VOID
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)
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{
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__asm {
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sti
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}
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}
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VOID
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EfiCpuidExt (
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IN UINT32 RegisterInEax,
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IN UINT32 CacheLevel,
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OUT EFI_CPUID_REGISTER *Regs
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)
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{
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__asm {
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pushad
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mov eax, RegisterInEax
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mov ecx, CacheLevel
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cpuid
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mov edi, DWORD PTR Regs
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mov DWORD PTR [edi].RegEax, eax ; Reg->RegEax
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mov DWORD PTR [edi].RegEbx, ebx ; Reg->RegEbx
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mov DWORD PTR [edi].RegEcx, ecx ; Reg->RegEcx
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mov DWORD PTR [edi].RegEdx, edx ; Reg->RegEdx
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popad
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}
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}
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