mirror of
https://github.com/CloverHackyColor/CloverBootloader.git
synced 2024-12-01 12:53:27 +01:00
169 lines
7.6 KiB
C
169 lines
7.6 KiB
C
/** @file
|
|
x64 Long Mode Virtual Memory Management Definitions
|
|
|
|
References:
|
|
1) IA-32 Intel(R) Architecture Software Developer's Manual Volume 1:Basic Architecture, Intel
|
|
2) IA-32 Intel(R) Architecture Software Developer's Manual Volume 2:Instruction Set Reference, Intel
|
|
3) IA-32 Intel(R) Architecture Software Developer's Manual Volume 3:System Programmer's Guide, Intel
|
|
4) AMD64 Architecture Programmer's Manual Volume 2: System Programming
|
|
|
|
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
|
|
Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
|
|
Copyright (c) 2011, dmazar. All rights reserved.<BR>
|
|
|
|
SPDX-License-Identifier: BSD-2-Clause-Patent
|
|
|
|
**/
|
|
|
|
#ifndef VIRTUAL_MEMORY_H
|
|
#define VIRTUAL_MEMORY_H
|
|
|
|
#pragma pack(push, 1)
|
|
|
|
//
|
|
// Page-Map Level-4 Offset (PML4) and
|
|
// Page-Directory-Pointer Offset (PDPE) entries 4K & 2MB
|
|
//
|
|
|
|
typedef union {
|
|
struct {
|
|
UINT64 Present : 1; // 0 = Not present in memory, 1 = Present in memory
|
|
UINT64 ReadWrite : 1; // 0 = Read-Only, 1= Read/Write
|
|
UINT64 UserSupervisor : 1; // 0 = Supervisor, 1=User
|
|
UINT64 WriteThrough : 1; // 0 = Write-Back caching, 1=Write-Through caching
|
|
UINT64 CacheDisabled : 1; // 0 = Cached, 1=Non-Cached
|
|
UINT64 Accessed : 1; // 0 = Not accessed, 1 = Accessed (set by CPU)
|
|
UINT64 Reserved : 1; // Reserved
|
|
UINT64 MustBeZero : 2; // Must Be Zero
|
|
UINT64 Available : 3; // Available for use by system software
|
|
UINT64 PageTableBaseAddress : 40; // Page Table Base Address
|
|
UINT64 AvabilableHigh : 11; // Available for use by system software
|
|
UINT64 Nx : 1; // No Execute bit
|
|
} Bits;
|
|
UINT64 Uint64;
|
|
} PAGE_MAP_AND_DIRECTORY_POINTER;
|
|
|
|
//
|
|
// Page Table Entry 4KB
|
|
//
|
|
typedef union {
|
|
struct {
|
|
UINT64 Present : 1; // 0 = Not present in memory, 1 = Present in memory
|
|
UINT64 ReadWrite : 1; // 0 = Read-Only, 1= Read/Write
|
|
UINT64 UserSupervisor : 1; // 0 = Supervisor, 1=User
|
|
UINT64 WriteThrough : 1; // 0 = Write-Back caching, 1=Write-Through caching
|
|
UINT64 CacheDisabled : 1; // 0 = Cached, 1=Non-Cached
|
|
UINT64 Accessed : 1; // 0 = Not accessed, 1 = Accessed (set by CPU)
|
|
UINT64 Dirty : 1; // 0 = Not Dirty, 1 = written by processor on access to page
|
|
UINT64 PAT : 1; // Combines with CD, WT and MTRR to define true caching type
|
|
UINT64 Global : 1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write
|
|
UINT64 Available : 3; // Available for use by system software
|
|
UINT64 PageTableBaseAddress : 40; // Page Table Base Address
|
|
UINT64 AvabilableHigh : 11; // Available for use by system software
|
|
UINT64 Nx : 1; // 0 = Execute Code, 1 = No Code Execution
|
|
} Bits;
|
|
UINT64 Uint64;
|
|
} PAGE_TABLE_4K_ENTRY;
|
|
|
|
//
|
|
// Page Table Entry 2MB
|
|
//
|
|
typedef union {
|
|
struct {
|
|
UINT64 Present : 1; // 0 = Not present in memory, 1 = Present in memory
|
|
UINT64 ReadWrite : 1; // 0 = Read-Only, 1= Read/Write
|
|
UINT64 UserSupervisor : 1; // 0 = Supervisor, 1=User
|
|
UINT64 WriteThrough : 1; // 0 = Write-Back caching, 1=Write-Through caching
|
|
UINT64 CacheDisabled : 1; // 0 = Cached, 1=Non-Cached
|
|
UINT64 Accessed : 1; // 0 = Not accessed, 1 = Accessed (set by CPU)
|
|
UINT64 Dirty : 1; // 0 = Not Dirty, 1 = written by processor on access to page
|
|
UINT64 MustBe1 : 1; // Must be 1
|
|
UINT64 Global : 1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write
|
|
UINT64 Available : 3; // Available for use by system software
|
|
UINT64 PAT : 1; // Combines with CD, WT and MTRR to define true caching type
|
|
UINT64 MustBeZero : 8; // Must be zero;
|
|
UINT64 PageTableBaseAddress : 31; // Page Table Base Address
|
|
UINT64 AvabilableHigh : 11; // Available for use by system software
|
|
UINT64 Nx : 1; // 0 = Execute Code, 1 = No Code Execution
|
|
} Bits;
|
|
UINT64 Uint64;
|
|
} PAGE_TABLE_2M_ENTRY;
|
|
|
|
//
|
|
// Page Table Entry 1GB
|
|
//
|
|
typedef union {
|
|
struct {
|
|
UINT64 Present : 1; // 0 = Not present in memory, 1 = Present in memory
|
|
UINT64 ReadWrite : 1; // 0 = Read-Only, 1= Read/Write
|
|
UINT64 UserSupervisor : 1; // 0 = Supervisor, 1=User
|
|
UINT64 WriteThrough : 1; // 0 = Write-Back caching, 1=Write-Through caching
|
|
UINT64 CacheDisabled : 1; // 0 = Cached, 1=Non-Cached
|
|
UINT64 Accessed : 1; // 0 = Not accessed, 1 = Accessed (set by CPU)
|
|
UINT64 Dirty : 1; // 0 = Not Dirty, 1 = written by processor on access to page
|
|
UINT64 MustBe1 : 1; // Must be 1
|
|
UINT64 Global : 1; // 0 = Not global page, 1 = global page TLB not cleared on CR3 write
|
|
UINT64 Available : 3; // Available for use by system software
|
|
UINT64 PAT : 1; // Combines with CD, WT and MTRR to define true caching type
|
|
UINT64 MustBeZero : 17; // Must be zero;
|
|
UINT64 PageTableBaseAddress : 22; // Page Table Base Address
|
|
UINT64 AvabilableHigh : 11; // Available for use by system software
|
|
UINT64 Nx : 1; // 0 = Execute Code, 1 = No Code Execution
|
|
} Bits;
|
|
UINT64 Uint64;
|
|
} PAGE_TABLE_1G_ENTRY;
|
|
|
|
//
|
|
// PAT index bits.
|
|
//
|
|
typedef union {
|
|
struct {
|
|
UINT8 WriteThrough : 1; // 0 = Write-Back caching, 1=Write-Through caching
|
|
UINT8 CacheDisabled : 1; // 0 = Cached, 1=Non-Cached
|
|
UINT8 PAT : 1; // Combines with CD, WT and MTRR to define true caching type
|
|
UINT8 Reserved : 5; // Reserved
|
|
} Bits;
|
|
UINT8 Index;
|
|
} PAT_INDEX;
|
|
|
|
typedef union {
|
|
struct {
|
|
UINT64 PhysPgOffset : 12; // 0 = Physical Page Offset
|
|
UINT64 PTOffset : 9; // 0 = Page Table Offset
|
|
UINT64 PDOffset : 9; // 0 = Page Directory Offset
|
|
UINT64 PDPOffset : 9; // 0 = Page Directory Pointer Offset
|
|
UINT64 PML4Offset : 9; // 0 = Page Map Level 4 Offset
|
|
UINT64 SignExtend : 16; // 0 = Sign Extend
|
|
} Pg4K;
|
|
struct {
|
|
UINT64 PhysPgOffset : 21; // 0 = Physical Page Offset
|
|
UINT64 PDOffset : 9; // 0 = Page Directory Offset
|
|
UINT64 PDPOffset : 9; // 0 = Page Directory Pointer Offset
|
|
UINT64 PML4Offset : 9; // 0 = Page Map Level 4 Offset
|
|
UINT64 SignExtend : 16; // 0 = Sign Extend
|
|
} Pg2M;
|
|
struct {
|
|
UINT64 PhysPgOffset : 30; // 0 = Physical Page Offset
|
|
UINT64 PDPOffset : 9; // 0 = Page Directory Pointer Offset
|
|
UINT64 PML4Offset : 9; // 0 = Page Map Level 4 Offset
|
|
UINT64 SignExtend : 16; // 0 = Sign Extend
|
|
} Pg1G;
|
|
UINT64 Uint64;
|
|
} VIRTUAL_ADDR;
|
|
|
|
#define VA_FIX_SIGN_EXTEND(VA) ((VA).Pg4K.SignExtend = ((VA).Pg4K.PML4Offset & 0x100U) ? 0xFFFFU : 0U);
|
|
|
|
#pragma pack(pop)
|
|
|
|
#define CR0_WP BIT16
|
|
|
|
#define CR3_ADDR_MASK 0x000FFFFFFFFFF000ull
|
|
#define CR3_FLAG_PWT 0x0000000000000008ull
|
|
#define CR3_FLAG_PCD 0x0000000000000010ull
|
|
|
|
#define PAGING_4K_ADDRESS_MASK_64 0x000FFFFFFFFFF000ull
|
|
#define PAGING_2M_ADDRESS_MASK_64 0x000FFFFFFFE00000ull
|
|
#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull
|
|
|
|
#endif // VIRTUAL_MEMORY_H
|