Vlv2TbltDevicePkg/Library/CpuIA32Lib/IA32/CpuIA32.asm

   1 ;
   2 ; This file contains an 'Intel Sample Driver' and is
   3 ; licensed for Intel CPUs and chipsets under the terms of your
   4 ; license agreement with Intel or your vendor.  This file may
   5 ; be modified by the user, subject to additional terms of the
   6 ; license agreement
   7 ;
   8 ;
   9 ; Copyright (c)  1999  - 2014, Intel Corporation. All rights reserved
  10 ;
  11 ; This program and the accompanying materials are licensed and made available under
  12 ; the terms and conditions of the BSD License that accompanies this distribution.
  13 ; The full text of the license may be found at
  14 ; http://opensource.org/licenses/bsd-license.php.
  15 ;
  16 ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  17 ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  18 ;
  19 ;
  20
  21 ;Module Name:
  22 ;
  23 ;  CpuIA32.c
  24 ;
  25 ;Abstract:
  26 ;
  27 ;--*/
  28
  29 ;#include "CpuIA32.h"
  30
  31 ;---------------------------------------------------------------------------
  32     .586p
  33     .model  flat,C
  34     .code
  35
  36 ;---------------------------------------------------------------------------
  37 ;VOID
  38 ;EfiHalt (
  39 ;  VOID
  40 ;)
  41 EfiHalt PROC C PUBLIC
  42     hlt
  43     ret
  44 EfiHalt ENDP
  45
  46 ;VOID
  47 ;EfiWbinvd (
  48 ;  VOID
  49 ;)
  50 EfiWbinvd PROC C PUBLIC
  51     wbinvd
  52     ret
  53 EfiWbinvd ENDP
  54
  55 ;VOID
  56 ;EfiInvd (
  57 ; VOID
  58 ;)
  59 EfiInvd PROC C PUBLIC
  60     invd
  61     ret
  62 EfiInvd ENDP
  63
  64 ;VOID
  65 ;EfiCpuid (IN UINT32 RegisterInEax,
  66 ;          OUT EFI_CPUID_REGISTER *Reg OPTIONAL)
  67 EfiCpuid PROC C PUBLIC
  68     push ebp
  69     mov  ebp, esp
  70     push ebx
  71     push esi
  72     push edi
  73     pushad
  74
  75     mov    eax, dword ptr[ebp + 8] ;egisterInEax
  76     cpuid
  77     cmp    dword ptr[ebp + 0Ch], 0 ; Reg
  78     je     @F
  79     mov         edi,dword ptr [ebp+0Ch] ; Reg
  80
  81     mov         dword ptr [edi],eax ; Reg->RegEax
  82     mov         dword ptr [edi+4],ebx ; Reg->RegEbx
  83     mov         dword ptr [edi+8],ecx ; Reg->RegEcx
  84     mov         dword ptr [edi+0Ch],edx ; Reg->RegEdx
  85
  86 @@:
  87     popad
  88     pop         edi
  89     pop         esi
  90     pop         ebx
  91     pop         ebp
  92
  93     ret
  94 EfiCpuid ENDP
  95
  96
  97 ;UINT64
  98 ;EfiReadMsr (
  99 ;  IN UINT32 Index
 100 ;  );
 101 EfiReadMsr PROC C PUBLIC
 102     mov    ecx, dword ptr [esp + 4]; Index
 103     rdmsr
 104     ret
 105 EfiReadMsr ENDP
 106
 107 ;VOID
 108 ;EfiWriteMsr (
 109 ;  IN   UINT32  Index,
 110 ;  IN   UINT64  Value
 111 ;  );
 112 EfiWriteMsr PROC C PUBLIC
 113     mov    ecx, dword ptr [esp+4]; Index
 114     mov    eax, dword ptr [esp+8]; DWORD PTR Value[0]
 115     mov    edx, dword ptr [esp+0Ch]; DWORD PTR Value[4]
 116     wrmsr
 117     ret
 118 EfiWriteMsr  ENDP
 119
 120 ;UINT64
 121 ;EfiReadTsc (
 122 ;  VOID
 123 ;  )
 124 EfiReadTsc PROC C PUBLIC
 125     rdtsc
 126     ret
 127 EfiReadTsc  ENDP
 128
 129 ;VOID
 130 ;EfiDisableCache (
 131 ;  VOID
 132 ;)
 133 EfiDisableCache PROC C PUBLIC
 134     mov   eax, cr0
 135     bswap eax
 136     and   al, 60h
 137     cmp   al, 60h
 138     je    @F
 139     mov   eax, cr0
 140     or    eax, 060000000h
 141     mov   cr0, eax
 142     wbinvd
 143 @@:
 144     ret
 145 EfiDisableCache  ENDP
 146
 147 ;VOID
 148 ;EfiEnableCache (
 149 ;  VOID
 150 ;  )
 151 EfiEnableCache PROC C PUBLIC
 152     wbinvd
 153     mov   eax, cr0
 154     and   eax, 09fffffffh
 155     mov   cr0, eax
 156     ret
 157 EfiEnableCache  ENDP
 158
 159 ;UINT32
 160 ;EfiGetEflags (
 161 ;  VOID
 162 ;  )
 163 EfiGetEflags PROC C PUBLIC
 164     pushfd
 165     pop  eax
 166     ret
 167 EfiGetEflags  ENDP
 168
 169 ;VOID
 170 ;EfiDisableInterrupts (
 171 ;  VOID
 172 ;  )
 173 EfiDisableInterrupts PROC C PUBLIC
 174     cli
 175     ret
 176 EfiDisableInterrupts  ENDP
 177
 178 ;VOID
 179 ;EfiEnableInterrupts (
 180 ;  VOID
 181 ;  )
 182 EfiEnableInterrupts  PROC C PUBLIC
 183     sti
 184     ret
 185 EfiEnableInterrupts   ENDP
 186
 187 ;VOID
 188 ;EfiCpuidExt (
 189 ;  IN   UINT32              RegisterInEax,
 190 ;  IN   UINT32              CacheLevel,
 191 ;  OUT  EFI_CPUID_REGISTER  *Regs
 192 ;  )
 193 EfiCpuidExt PROC C PUBLIC USES ebx edi esi
 194     pushad
 195
 196     mov    eax, dword ptr [esp + 30h] ; RegisterInEax
 197     mov    ecx, dword ptr [esp + 34h] ; CacheLevel
 198     cpuid
 199     mov    edi, dword ptr [esp + 38h] ; DWORD PTR Regs
 200
 201     mov    dword ptr [edi], eax         ; Reg->RegEax
 202     mov    dword ptr [edi + 4], ebx     ; Reg->RegEbx
 203     mov    dword ptr [edi + 8], ecx     ; Reg->RegEcx
 204     mov    dword ptr [edi + 0Ch], edx   ; Reg->RegEdx
 205
 206     popad
 207     ret
 208 EfiCpuidExt  ENDP
 209
 210         END
 211