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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 | |
f40793be | 29 | #define SYS_CODE64_SEL 0x38\r |
30 | \r | |
878ddf1f | 31 | #pragma pack(1)\r |
32 | \r | |
f40793be | 33 | typedef union {\r |
34 | struct {\r | |
35 | UINT32 LimitLow : 16;\r | |
36 | UINT32 BaseLow : 16;\r | |
37 | UINT32 BaseMid : 8;\r | |
38 | UINT32 Type : 4;\r | |
39 | UINT32 System : 1;\r | |
40 | UINT32 Dpl : 2;\r | |
41 | UINT32 Present : 1;\r | |
42 | UINT32 LimitHigh : 4;\r | |
43 | UINT32 Software : 1;\r | |
44 | UINT32 Reserved : 1;\r | |
45 | UINT32 DefaultSize : 1;\r | |
46 | UINT32 Granularity : 1;\r | |
47 | UINT32 BaseHigh : 8;\r | |
48 | } Bits;\r | |
49 | UINT64 Uint64;\r | |
50 | } IA32_GDT;\r | |
51 | \r | |
878ddf1f | 52 | //\r |
53 | // Page-Map Level-4 Offset (PML4) and\r | |
54 | // Page-Directory-Pointer Offset (PDPE) entries 4K & 2MB\r | |
55 | //\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:2; // Must Be Zero\r | |
67 | UINT64 Available:3; // Available for use by system software\r | |
68 | UINT64 PageTableBaseAddress:40; // Page Table Base Address\r | |
69 | UINT64 AvabilableHigh:11; // Available for use by system software\r | |
70 | UINT64 Nx:1; // No Execute bit\r | |
71 | } Bits;\r | |
72 | UINT64 Uint64;\r | |
e4e7fed9 | 73 | } PAGE_MAP_AND_DIRECTORY_POINTER;\r |
878ddf1f | 74 | \r |
75 | //\r | |
76 | // Page Table Entry 2MB\r | |
77 | //\r | |
78 | typedef union {\r | |
79 | struct {\r | |
80 | UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory\r | |
81 | UINT64 ReadWrite:1; // 0 = Read-Only, 1= Read/Write\r | |
82 | UINT64 UserSupervisor:1; // 0 = Supervisor, 1=User\r | |
83 | UINT64 WriteThrough:1; // 0 = Write-Back caching, 1=Write-Through caching\r | |
84 | UINT64 CacheDisabled:1; // 0 = Cached, 1=Non-Cached\r | |
85 | UINT64 Accessed:1; // 0 = Not accessed, 1 = Accessed (set by CPU)\r | |
86 | UINT64 Dirty:1; // 0 = Not Dirty, 1 = written by processor on access to page\r | |
87 | UINT64 MustBe1:1; // Must be 1 \r | |
88 | UINT64 Global:1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write\r | |
89 | UINT64 Available:3; // Available for use by system software\r | |
90 | UINT64 PAT:1; //\r | |
91 | UINT64 MustBeZero:8; // Must be zero;\r | |
92 | UINT64 PageTableBaseAddress:31; // Page Table Base Address\r | |
93 | UINT64 AvabilableHigh:11; // Available for use by system software\r | |
94 | UINT64 Nx:1; // 0 = Execute Code, 1 = No Code Execution\r | |
95 | } Bits;\r | |
96 | UINT64 Uint64;\r | |
e4e7fed9 | 97 | } PAGE_TABLE_ENTRY;\r |
878ddf1f | 98 | \r |
99 | #pragma pack()\r | |
100 | \r | |
f40793be | 101 | UINTN\r |
878ddf1f | 102 | CreateIdentityMappingPageTables (\r |
e4e7fed9 | 103 | VOID\r |
878ddf1f | 104 | )\r |
105 | ;\r | |
106 | \r | |
107 | #endif \r |