5997daf742
This PCD holds the address mask for page table entries when memory encryption is enabled on AMD processors supporting the Secure Encrypted Virtualization (SEV) feature. The mask is applied when creating page tables. Cc: Feng Tian <feng.tian@intel.com> Cc: Star Zeng <star.zeng@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Brijesh Singh <brijesh.singh@amd.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Leo Duran <leo.duran@amd.com> Reviewed-by: Star Zeng <star.zeng@intel.com>
232 lines
8.0 KiB
C
232 lines
8.0 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 - 2015, Intel Corporation. All rights reserved.<BR>
|
|
Copyright (c) 2017, AMD Incorporated. 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.
|
|
|
|
**/
|
|
#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 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_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;
|
|
|
|
#pragma pack()
|
|
|
|
#define IA32_PG_P BIT0
|
|
#define IA32_PG_RW BIT1
|
|
|
|
#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull
|
|
|
|
/**
|
|
Enable Execute Disable Bit.
|
|
|
|
**/
|
|
VOID
|
|
EnableExecuteDisableBit (
|
|
VOID
|
|
);
|
|
|
|
/**
|
|
Split 2M page to 4K.
|
|
|
|
@param[in] PhysicalAddress Start physical address the 2M page covered.
|
|
@param[in, out] PageEntry2M Pointer to 2M page entry.
|
|
@param[in] StackBase Stack base address.
|
|
@param[in] StackSize Stack size.
|
|
|
|
**/
|
|
VOID
|
|
Split2MPageTo4K (
|
|
IN EFI_PHYSICAL_ADDRESS PhysicalAddress,
|
|
IN OUT UINT64 *PageEntry2M,
|
|
IN EFI_PHYSICAL_ADDRESS StackBase,
|
|
IN UINTN StackSize
|
|
);
|
|
|
|
/**
|
|
Allocates and fills in the Page Directory and Page Table Entries to
|
|
establish a 1:1 Virtual to Physical mapping.
|
|
|
|
@param[in] StackBase Stack base address.
|
|
@param[in] StackSize Stack size.
|
|
|
|
@return The address of 4 level page map.
|
|
|
|
**/
|
|
UINTN
|
|
CreateIdentityMappingPageTables (
|
|
IN EFI_PHYSICAL_ADDRESS StackBase,
|
|
IN UINTN StackSize
|
|
);
|
|
|
|
|
|
/**
|
|
|
|
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
|