1 ;/*++ 2 ; 3 ;Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR> 4 ;This program and the accompanying materials 5 ;are licensed and made available under the terms and conditions of the BSD License 6 ;which accompanies this distribution. The full text of the license may be found at 7 ;http://opensource.org/licenses/bsd-license.php 8 ; 9 ;THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 10 ;WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. 11 ; 12 ;Module Name: 13 ; 14 ; CpuIA32.c 15 ; 16 ;Abstract: 17 ; 18 ;--*/ 19 20 ;#include "CpuIA32.h" 21 22 ;--------------------------------------------------------------------------- 23 .586p 24 .model flat,C 25 .code 26 27 ;--------------------------------------------------------------------------- 28 ;VOID 29 ;EfiHalt ( 30 ; VOID 31 ;) 32 EfiHalt PROC C PUBLIC 33 hlt 34 ret 35 EfiHalt ENDP 36 37 ;VOID 38 ;EfiWbinvd ( 39 ; VOID 40 ;) 41 EfiWbinvd PROC C PUBLIC 42 wbinvd 43 ret 44 EfiWbinvd ENDP 45 46 ;VOID 47 ;EfiInvd ( 48 ; VOID 49 ;) 50 EfiInvd PROC C PUBLIC 51 invd 52 ret 53 EfiInvd ENDP 54 55 ;VOID 56 ;EfiCpuid (IN UINT32 RegisterInEax, 57 ; OUT EFI_CPUID_REGISTER *Reg OPTIONAL) 58 EfiCpuid PROC C PUBLIC 59 push ebp 60 mov ebp, esp 61 push ebx 62 push esi 63 push edi 64 pushad 65 66 mov eax, dword ptr[ebp + 8] ;egisterInEax 67 cpuid 68 cmp dword ptr[ebp + 0Ch], 0 ; Reg 69 je @F 70 mov edi,dword ptr [ebp+0Ch] ; Reg 71 72 mov dword ptr [edi],eax ; Reg->RegEax 73 mov dword ptr [edi+4],ebx ; Reg->RegEbx 74 mov dword ptr [edi+8],ecx ; Reg->RegEcx 75 mov dword ptr [edi+0Ch],edx ; Reg->RegEdx 76 77 @@: 78 popad 79 pop edi 80 pop esi 81 pop ebx 82 pop ebp 83 84 ret 85 EfiCpuid ENDP 86 87 88 ;UINT64 89 ;EfiReadMsr ( 90 ; IN UINT32 Index 91 ; ); 92 EfiReadMsr PROC C PUBLIC 93 mov ecx, dword ptr [esp + 4]; Index 94 rdmsr 95 ret 96 EfiReadMsr ENDP 97 98 ;VOID 99 ;EfiWriteMsr ( 100 ; IN UINT32 Index, 101 ; IN UINT64 Value 102 ; ); 103 EfiWriteMsr PROC C PUBLIC 104 mov ecx, dword ptr [esp+4]; Index 105 mov eax, dword ptr [esp+8]; DWORD PTR Value[0] 106 mov edx, dword ptr [esp+0Ch]; DWORD PTR Value[4] 107 wrmsr 108 ret 109 EfiWriteMsr ENDP 110 111 ;UINT64 112 ;EfiReadTsc ( 113 ; VOID 114 ; ) 115 EfiReadTsc PROC C PUBLIC 116 rdtsc 117 ret 118 EfiReadTsc ENDP 119 120 ;VOID 121 ;EfiDisableCache ( 122 ; VOID 123 ;) 124 EfiDisableCache PROC C PUBLIC 125 mov eax, cr0 126 bswap eax 127 and al, 60h 128 cmp al, 60h 129 je @F 130 mov eax, cr0 131 or eax, 060000000h 132 mov cr0, eax 133 wbinvd 134 @@: 135 ret 136 EfiDisableCache ENDP 137 138 ;VOID 139 ;EfiEnableCache ( 140 ; VOID 141 ; ) 142 EfiEnableCache PROC C PUBLIC 143 wbinvd 144 mov eax, cr0 145 and eax, 09fffffffh 146 mov cr0, eax 147 ret 148 EfiEnableCache ENDP 149 150 ;UINT32 151 ;EfiGetEflags ( 152 ; VOID 153 ; ) 154 EfiGetEflags PROC C PUBLIC 155 pushfd 156 pop eax 157 ret 158 EfiGetEflags ENDP 159 160 ;VOID 161 ;EfiDisableInterrupts ( 162 ; VOID 163 ; ) 164 EfiDisableInterrupts PROC C PUBLIC 165 cli 166 ret 167 EfiDisableInterrupts ENDP 168 169 ;VOID 170 ;EfiEnableInterrupts ( 171 ; VOID 172 ; ) 173 EfiEnableInterrupts PROC C PUBLIC 174 sti 175 ret 176 EfiEnableInterrupts ENDP 177 178 ;VOID 179 ;EfiCpuidExt ( 180 ; IN UINT32 RegisterInEax, 181 ; IN UINT32 CacheLevel, 182 ; OUT EFI_CPUID_REGISTER *Regs 183 ; ) 184 EfiCpuidExt PROC C PUBLIC USES ebx edi esi 185 pushad 186 187 mov eax, dword ptr [esp + 30h] ; RegisterInEax 188 mov ecx, dword ptr [esp + 34h] ; CacheLevel 189 cpuid 190 mov edi, dword ptr [esp + 38h] ; DWORD PTR Regs 191 192 mov dword ptr [edi], eax ; Reg->RegEax 193 mov dword ptr [edi + 4], ebx ; Reg->RegEbx 194 mov dword ptr [edi + 8], ecx ; Reg->RegEcx 195 mov dword ptr [edi + 0Ch], edx ; Reg->RegEdx 196 197 popad 198 ret 199 EfiCpuidExt ENDP 200 201 END 202 203
