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|
;/*++
;
;Copyright (c) 2006, 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:
;
; CpuIA32.c
;
;Abstract:
;
;--*/
;#include "CpuIA32.h"
;---------------------------------------------------------------------------
.586p
.model flat,C
.code
;---------------------------------------------------------------------------
;VOID
;EfiHalt (
; VOID
;)
EfiHalt PROC C PUBLIC
hlt
ret
EfiHalt ENDP
;VOID
;EfiWbinvd (
; VOID
;)
EfiWbinvd PROC C PUBLIC
wbinvd
ret
EfiWbinvd ENDP
;VOID
;EfiInvd (
; VOID
;)
EfiInvd PROC C PUBLIC
invd
ret
EfiInvd ENDP
;VOID
;EfiCpuid (IN UINT32 RegisterInEax,
; OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
EfiCpuid PROC C PUBLIC
push ebp
mov ebp, esp
push ebx
push esi
push edi
pushad
mov eax, dword ptr[ebp + 8] ;egisterInEax
cpuid
cmp dword ptr[ebp + 0Ch], 0 ; Reg
je @F
mov edi,dword ptr [ebp+0Ch] ; Reg
mov dword ptr [edi],eax ; Reg->RegEax
mov dword ptr [edi+4],ebx ; Reg->RegEbx
mov dword ptr [edi+8],ecx ; Reg->RegEcx
mov dword ptr [edi+0Ch],edx ; Reg->RegEdx
@@:
popad
pop edi
pop esi
pop ebx
pop ebp
ret
EfiCpuid ENDP
;UINT64
;EfiReadMsr (
; IN UINT32 Index
; );
EfiReadMsr PROC C PUBLIC
mov ecx, dword ptr [esp + 4]; Index
rdmsr
ret
EfiReadMsr ENDP
;VOID
;EfiWriteMsr (
; IN UINT32 Index,
; IN UINT64 Value
; );
EfiWriteMsr PROC C PUBLIC
mov ecx, dword ptr [esp+4]; Index
mov eax, dword ptr [esp+8]; DWORD PTR Value[0]
mov edx, dword ptr [esp+0Ch]; DWORD PTR Value[4]
wrmsr
ret
EfiWriteMsr ENDP
;UINT64
;EfiReadTsc (
; VOID
; )
EfiReadTsc PROC C PUBLIC
rdtsc
ret
EfiReadTsc ENDP
;VOID
;EfiDisableCache (
; VOID
;)
EfiDisableCache PROC C PUBLIC
mov eax, cr0
bswap eax
and al, 60h
cmp al, 60h
je @F
mov eax, cr0
or eax, 060000000h
mov cr0, eax
wbinvd
@@:
ret
EfiDisableCache ENDP
;VOID
;EfiEnableCache (
; VOID
; )
EfiEnableCache PROC C PUBLIC
invd
mov eax, cr0
and eax, 09fffffffh
mov cr0, eax
ret
EfiEnableCache ENDP
;UINT32
;EfiGetEflags (
; VOID
; )
EfiGetEflags PROC C PUBLIC
pushfd
pop eax
ret
EfiGetEflags ENDP
;VOID
;EfiDisableInterrupts (
; VOID
; )
EfiDisableInterrupts PROC C PUBLIC
cli
ret
EfiDisableInterrupts ENDP
;VOID
;EfiEnableInterrupts (
; VOID
; )
EfiEnableInterrupts PROC C PUBLIC
sti
ret
EfiEnableInterrupts ENDP
;VOID
;EfiCpuidExt (
; IN UINT32 RegisterInEax,
; IN UINT32 CacheLevel,
; OUT EFI_CPUID_REGISTER *Regs
; )
EfiCpuidExt PROC C PUBLIC USES ebx edi esi
pushad
mov eax, dword ptr [esp + 30h] ; RegisterInEax
mov ecx, dword ptr [esp + 34h] ; CacheLevel
cpuid
mov edi, dword ptr [esp + 38h] ; DWORD PTR Regs
mov dword ptr [edi], eax ; Reg->RegEax
mov dword ptr [edi + 4], ebx ; Reg->RegEbx
mov dword ptr [edi + 8], ecx ; Reg->RegEcx
mov dword ptr [edi + 0Ch], edx ; Reg->RegEdx
popad
ret
EfiCpuidExt ENDP
END
|
