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