CloverBootloader/MemoryFix/OsxAptioFixDrv/VMem.h

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/**
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 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
Extended by dmazar.
**/
#define SYS_CODE64_SEL 0x38
#pragma pack(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; //
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; //
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; //
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;
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 & 0x100) ? 0xFFFF : 0;
#pragma pack()
// 64 bit
#define CR3_ADDR_MASK 0x000FFFFFFFFFF000
#define CR3_FLAG_PWT 0x0000000000000008
#define CR3_FLAG_PCD 0x0000000000000010
#define PT_ADDR_MASK_4K 0x000FFFFFFFFFF000
#define PT_ADDR_MASK_2M 0x000FFFFFFFE00000
#define PT_ADDR_MASK_1G 0x000FFFFFC0000000
/** Returns pointer to PML4 table in PageTable and PWT and PCD flags in Flags. */
VOID
GetCurrentPageTable(PAGE_MAP_AND_DIRECTORY_POINTER **PageTable, UINTN *Flags);
/** Prints given PageTable. */
VOID
PrintPageTable(PAGE_MAP_AND_DIRECTORY_POINTER *PageTable, UINTN Flags);
/** Returns physical addr for given virtual addr. */
EFI_STATUS
GetPhysicalAddr(PAGE_MAP_AND_DIRECTORY_POINTER *PageTable, EFI_VIRTUAL_ADDRESS VirtualAddr, EFI_PHYSICAL_ADDRESS *PhysicalAddr);
/** Inits vm memory pool. Should be called while boot services are still usable. */
EFI_STATUS
VmAllocateMemoryPool(VOID);
/** Maps (remaps) 4K page given by VirtualAddr to PhysicalAddr page in PageTable. */
EFI_STATUS
VmMapVirtualPage(PAGE_MAP_AND_DIRECTORY_POINTER *PageTable, EFI_VIRTUAL_ADDRESS VirtualAddr, EFI_PHYSICAL_ADDRESS PhysicalAddr);
/** Maps (remaps) NumPages 4K pages given by VirtualAddr to PhysicalAddr pages in PageTable. */
EFI_STATUS
VmMapVirtualPages(PAGE_MAP_AND_DIRECTORY_POINTER *PageTable, EFI_VIRTUAL_ADDRESS VirtualAddr, UINTN NumPages, EFI_PHYSICAL_ADDRESS PhysicalAddr);
/** Flashes TLB caches. */
VOID
VmFlashCaches(VOID);