mirror of https://github.com/acidanthera/audk.git
162 lines
5.1 KiB
C
162 lines
5.1 KiB
C
/** @file
|
|
x64 Long Mode Virtual Memory Management Definitions
|
|
|
|
References:
|
|
1) IA-32 Intel(R) Atchitecture Software Developer's Manual Volume 1:Basic Architecture, Intel
|
|
2) IA-32 Intel(R) Atchitecture Software Developer's Manual Volume 2:Instruction Set Reference, Intel
|
|
3) IA-32 Intel(R) Atchitecture Software Developer's Manual Volume 3:System Programmer's Guide, Intel
|
|
4) AMD64 Architecture Programmer's Manual Volume 2: System Programming
|
|
|
|
Copyright (c) 2006 - 2008, Intel Corporation. <BR>
|
|
All rights reserved. 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.
|
|
|
|
**/
|
|
#ifndef _VIRTUAL_MEMORY_H_
|
|
#define _VIRTUAL_MEMORY_H_
|
|
|
|
|
|
#define SYS_CODE64_SEL 0x38
|
|
|
|
#pragma pack(1)
|
|
|
|
typedef union {
|
|
struct {
|
|
UINT32 LimitLow : 16;
|
|
UINT32 BaseLow : 16;
|
|
UINT32 BaseMid : 8;
|
|
UINT32 Type : 4;
|
|
UINT32 System : 1;
|
|
UINT32 Dpl : 2;
|
|
UINT32 Present : 1;
|
|
UINT32 LimitHigh : 4;
|
|
UINT32 Software : 1;
|
|
UINT32 Reserved : 1;
|
|
UINT32 DefaultSize : 1;
|
|
UINT32 Granularity : 1;
|
|
UINT32 BaseHigh : 8;
|
|
} Bits;
|
|
UINT64 Uint64;
|
|
} IA32_GDT;
|
|
|
|
typedef struct {
|
|
IA32_IDT_GATE_DESCRIPTOR Ia32IdtEntry;
|
|
UINT32 Offset32To63;
|
|
UINT32 Reserved;
|
|
} X64_IDT_GATE_DESCRIPTOR;
|
|
|
|
//
|
|
// 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 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_ENTRY;
|
|
|
|
#pragma pack()
|
|
|
|
|
|
|
|
/**
|
|
Allocates and fills in the Page Directory and Page Table Entries to
|
|
establish a 1:1 Virtual to Physical mapping.
|
|
|
|
@param NumberOfProcessorPhysicalAddressBits Number of processor address bits
|
|
to use. Limits the number of page
|
|
table entries to the physical
|
|
address space.
|
|
|
|
@return EFI_SUCCESS The 1:1 Virtual to Physical identity mapping was created
|
|
|
|
**/
|
|
UINTN
|
|
CreateIdentityMappingPageTables (
|
|
VOID
|
|
);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
Fix up the vector number in the vector code.
|
|
|
|
@param VectorBase Base address of the vector handler.
|
|
|
|
@param VectorNum Index of vector.
|
|
|
|
**/
|
|
VOID
|
|
EFIAPI
|
|
AsmVectorFixup (
|
|
VOID *VectorBase,
|
|
UINT8 VectorNum
|
|
);
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
Get the information of vector template.
|
|
|
|
@param TemplateBase Base address of the template code.
|
|
|
|
@return Size of the Template code.
|
|
|
|
**/
|
|
UINTN
|
|
EFIAPI
|
|
AsmGetVectorTemplatInfo (
|
|
OUT VOID **TemplateBase
|
|
);
|
|
|
|
|
|
#endif
|