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878ddf1f | 1 | /*++ \r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
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 | VirtualMemory.h\r | |
14 | \r | |
15 | Abstract:\r | |
16 | \r | |
17 | x64 Long Mode Virtual Memory Management Definitions \r | |
18 | \r | |
19 | References:\r | |
20 | 1) IA-32 Intel(R) Atchitecture Software Developer's Manual Volume 1:Basic Architecture, Intel\r | |
21 | 2) IA-32 Intel(R) Atchitecture Software Developer's Manual Volume 2:Instruction Set Reference, Intel\r | |
22 | 3) IA-32 Intel(R) Atchitecture Software Developer's Manual Volume 3:System Programmer's Guide, Intel\r | |
23 | 4) AMD64 Architecture Programmer's Manual Volume 2: System Programming\r | |
24 | --*/ \r | |
25 | #ifndef _VIRTUAL_MEMORY_H_\r | |
26 | #define _VIRTUAL_MEMORY_H_\r | |
27 | \r | |
28 | \r | |
29 | #pragma pack(1)\r | |
30 | \r | |
31 | //\r | |
32 | // Page-Map Level-4 Offset (PML4) and\r | |
33 | // Page-Directory-Pointer Offset (PDPE) entries 4K & 2MB\r | |
34 | //\r | |
35 | \r | |
36 | typedef union {\r | |
37 | struct {\r | |
38 | UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
39 | UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
40 | UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
41 | UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
42 | UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
43 | UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
44 | UINT64 Reserved:1; // Reserved\r | |
45 | UINT64 MustBeZero:2; // Must Be Zero\r | |
46 | UINT64 Available:3; // Available for use by system software\r | |
47 | UINT64 PageTableBaseAddress:40; // Page Table Base Address\r | |
48 | UINT64 AvabilableHigh:11; // Available for use by system software\r | |
49 | UINT64 Nx:1; // No Execute bit\r | |
50 | } Bits;\r | |
51 | UINT64 Uint64;\r | |
52 | } x64_PAGE_MAP_AND_DIRECTORY_POINTER_2MB_4K;\r | |
53 | \r | |
54 | //\r | |
55 | // Page-Directory Offset 4K\r | |
56 | //\r | |
57 | typedef union {\r | |
58 | struct {\r | |
59 | UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
60 | UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
61 | UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
62 | UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
63 | UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
64 | UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
65 | UINT64 Reserved:1; // Reserved\r | |
66 | UINT64 MustBeZero:1; // Must Be Zero\r | |
67 | UINT64 Reserved2:1; // Reserved\r | |
68 | UINT64 Available:3; // Available for use by system software\r | |
69 | UINT64 PageTableBaseAddress:40; // Page Table Base Address\r | |
70 | UINT64 AvabilableHigh:11; // Available for use by system software\r | |
71 | UINT64 Nx:1; // No Execute bit\r | |
72 | } Bits;\r | |
73 | UINT64 Uint64;\r | |
74 | } x64_PAGE_DIRECTORY_ENTRY_4K;\r | |
75 | \r | |
76 | //\r | |
77 | // Page Table Entry 4K\r | |
78 | //\r | |
79 | typedef union {\r | |
80 | struct {\r | |
81 | UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
82 | UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
83 | UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
84 | UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
85 | UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
86 | UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
87 | UINT64 Dirty:1; // 0 = Not Dirty, 1 = written by processor on access to page\r | |
88 | UINT64 PAT:1; // 0 = Ignore Page Attribute Table \r | |
89 | UINT64 Global:1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write\r | |
90 | UINT64 Available:3; // Available for use by system software\r | |
91 | UINT64 PageTableBaseAddress:40; // Page Table Base Address\r | |
92 | UINT64 AvabilableHigh:11; // Available for use by system software\r | |
93 | UINT64 Nx:1; // 0 = Execute Code, 1 = No Code Execution\r | |
94 | } Bits;\r | |
95 | UINT64 Uint64;\r | |
96 | } x64_PAGE_TABLE_ENTRY_4K;\r | |
97 | \r | |
98 | \r | |
99 | //\r | |
100 | // Page Table Entry 2MB\r | |
101 | //\r | |
102 | typedef union {\r | |
103 | struct {\r | |
104 | UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
105 | UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
106 | UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
107 | UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
108 | UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
109 | UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
110 | UINT64 Dirty:1; // 0 = Not Dirty, 1 = written by processor on access to page\r | |
111 | UINT64 MustBe1:1; // Must be 1 \r | |
112 | UINT64 Global:1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write\r | |
113 | UINT64 Available:3; // Available for use by system software\r | |
114 | UINT64 PAT:1; //\r | |
115 | UINT64 MustBeZero:8; // Must be zero;\r | |
116 | UINT64 PageTableBaseAddress:31; // Page Table Base Address\r | |
117 | UINT64 AvabilableHigh:11; // Available for use by system software\r | |
118 | UINT64 Nx:1; // 0 = Execute Code, 1 = No Code Execution\r | |
119 | } Bits;\r | |
120 | UINT64 Uint64;\r | |
121 | } x64_PAGE_TABLE_ENTRY_2M;\r | |
122 | \r | |
123 | typedef union {\r | |
124 | UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
125 | UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
126 | UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
127 | UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
128 | UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
129 | UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
130 | UINT64 Dirty:1; // 0 = Not Dirty, 1 = written by processor on access to page\r | |
131 | UINT64 Reserved:57;\r | |
132 | } x64_PAGE_TABLE_ENTRY_COMMON;\r | |
133 | \r | |
134 | typedef union {\r | |
135 | x64_PAGE_TABLE_ENTRY_4K Page4k;\r | |
136 | x64_PAGE_TABLE_ENTRY_2M Page2Mb;\r | |
137 | x64_PAGE_TABLE_ENTRY_COMMON Common;\r | |
138 | } x64_PAGE_TABLE_ENTRY;\r | |
139 | \r | |
140 | //\r | |
141 | // MTRR Definitions\r | |
142 | //\r | |
143 | typedef enum {\r | |
144 | Uncached = 0,\r | |
145 | WriteCombining = 1,\r | |
146 | WriteThrough = 4,\r | |
147 | WriteProtected = 5,\r | |
148 | WriteBack = 6\r | |
149 | } x64_MTRR_MEMORY_TYPE;\r | |
150 | \r | |
151 | typedef union {\r | |
152 | struct {\r | |
153 | UINT32 VCNT:8; // The number of Variable Range MTRRs\r | |
154 | UINT32 FIX:1; // 1=Fixed Range MTRRs supported. 0=Fixed Range MTRRs not supported\r | |
155 | UINT32 Reserved_0; // Reserved\r | |
156 | UINT32 WC:1; // Write combining memory type supported\r | |
157 | UINT32 Reserved_1:21; // Reserved\r | |
158 | UINT32 Reserved_2:32; // Reserved\r | |
159 | } Bits;\r | |
160 | UINT64 Uint64;\r | |
161 | } x64_MTRRCAP_MSR;\r | |
162 | \r | |
163 | typedef union {\r | |
164 | struct {\r | |
165 | UINT32 Type:8; // Default Memory Type\r | |
166 | UINT32 Reserved_0:2; // Reserved\r | |
167 | UINT32 FE:1; // 1=Fixed Range MTRRs enabled. 0=Fixed Range MTRRs disabled\r | |
168 | UINT32 E:1; // 1=MTRRs enabled, 0=MTRRs disabled\r | |
169 | UINT32 Reserved_1:20; // Reserved\r | |
170 | UINT32 Reserved_2:32; // Reserved\r | |
171 | } Bits;\r | |
172 | UINT64 Uint64;\r | |
173 | } x64_MTRR_DEF_TYPE_MSR;\r | |
174 | \r | |
175 | typedef union {\r | |
176 | UINT8 Type[8]; // The 8 Memory Type values in the 64-bit MTRR\r | |
177 | UINT64 Uint64; // The full 64-bit MSR\r | |
178 | } x64_MTRR_FIXED_RANGE_MSR;\r | |
179 | \r | |
180 | typedef struct {\r | |
181 | x64_MTRRCAP_MSR Capabilities; // MTRR Capabilities MSR value\r | |
182 | x64_MTRR_DEF_TYPE_MSR DefaultType; // Default Memory Type MSR Value\r | |
183 | x64_MTRR_FIXED_RANGE_MSR Fixed[11]; // The 11 Fixed MTRR MSR Values\r | |
184 | } x64_MTRR_FIXED_RANGE;\r | |
185 | \r | |
186 | \r | |
187 | typedef union {\r | |
188 | struct {\r | |
189 | UINT64 Type:8; // Memory Type\r | |
190 | UINT64 Reserved0:4; // Reserved\r | |
191 | UINT64 PhysBase:40; // The physical base address(bits 35..12) of the MTRR\r | |
192 | UINT64 Reserved1:12 ; // Reserved\r | |
193 | } Bits;\r | |
194 | UINT64 Uint64;\r | |
195 | } x64_MTRR_PHYSBASE_MSR;\r | |
196 | \r | |
197 | typedef union {\r | |
198 | struct {\r | |
199 | UINT64 Reserved0:11; // Reserved\r | |
200 | UINT64 Valid:1; // 1=MTRR is valid, 0=MTRR is not valid\r | |
201 | UINT64 PhysMask:40; // The physical address mask (bits 35..12) of the MTRR\r | |
202 | UINT64 Reserved1:12; // Reserved\r | |
203 | } Bits;\r | |
204 | UINT64 Uint64;\r | |
205 | } x64_MTRR_PHYSMASK_MSR;\r | |
206 | \r | |
207 | typedef struct {\r | |
208 | x64_MTRR_PHYSBASE_MSR PhysBase; // Variable MTRR Physical Base MSR\r | |
209 | x64_MTRR_PHYSMASK_MSR PhysMask; // Variable MTRR Physical Mask MSR\r | |
210 | } x64_MTRR_VARIABLE_RANGE;\r | |
211 | \r | |
212 | #pragma pack()\r | |
213 | \r | |
214 | x64_MTRR_MEMORY_TYPE\r | |
215 | EfiGetMTRRMemoryType (\r | |
216 | IN EFI_PHYSICAL_ADDRESS Address\r | |
217 | )\r | |
218 | ;\r | |
219 | \r | |
220 | BOOLEAN\r | |
221 | CanNotUse2MBPage (\r | |
222 | IN EFI_PHYSICAL_ADDRESS BaseAddress\r | |
223 | )\r | |
224 | ;\r | |
225 | \r | |
226 | VOID\r | |
227 | Convert2MBPageTo4KPages ( \r | |
228 | IN x64_PAGE_TABLE_ENTRY_2M *PageDirectoryEntry2MB, \r | |
229 | IN EFI_PHYSICAL_ADDRESS PageAddress\r | |
230 | )\r | |
231 | ;\r | |
232 | \r | |
233 | EFI_PHYSICAL_ADDRESS\r | |
234 | CreateIdentityMappingPageTables (\r | |
235 | IN UINT32 NumberOfProcessorPhysicalAddressBits\r | |
236 | )\r | |
237 | ;\r | |
238 | \r | |
239 | #endif \r |