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system76-edk2/MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.h
Michael Kubacki 1436aea4d5 MdeModulePkg: Apply uncrustify changes 
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3737

Apply uncrustify changes to .c/.h files in the MdeModulePkg package

Cc: Andrew Fish <afish@apple.com>
Cc: Leif Lindholm <leif@nuviainc.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Signed-off-by: Michael Kubacki <michael.kubacki@microsoft.com>
Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn>
2021-12-07 17:24:28 +00:00

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/** @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>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#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 CR0_WP BIT16
#define IA32_PG_P BIT0
#define IA32_PG_RW BIT1
#define IA32_PG_PS BIT7
#define PAGING_PAE_INDEX_MASK 0x1FF
#define PAGING_4K_ADDRESS_MASK_64 0x000FFFFFFFFFF000ull
#define PAGING_2M_ADDRESS_MASK_64 0x000FFFFFFFE00000ull
#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull
#define PAGING_L1_ADDRESS_SHIFT 12
#define PAGING_L2_ADDRESS_SHIFT 21
#define PAGING_L3_ADDRESS_SHIFT 30
#define PAGING_L4_ADDRESS_SHIFT 39
#define PAGING_PML4E_NUMBER 4
#define PAGE_TABLE_POOL_ALIGNMENT BASE_2MB
#define PAGE_TABLE_POOL_UNIT_SIZE SIZE_2MB
#define PAGE_TABLE_POOL_UNIT_PAGES EFI_SIZE_TO_PAGES (PAGE_TABLE_POOL_UNIT_SIZE)
#define PAGE_TABLE_POOL_ALIGN_MASK \
(~(EFI_PHYSICAL_ADDRESS)(PAGE_TABLE_POOL_ALIGNMENT - 1))
typedef struct {
VOID *NextPool;
UINTN Offset;
UINTN FreePages;
} PAGE_TABLE_POOL;
/**
Check if Execute Disable Bit (IA32_EFER.NXE) should be enabled or not.
@retval TRUE IA32_EFER.NXE should be enabled.
@retval FALSE IA32_EFER.NXE should not be enabled.
**/
BOOLEAN
IsEnableNonExecNeeded (
VOID
);
/**
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.
@param[in] GhcbBase GHCB page area base address.
@param[in] GhcbSize GHCB page area size.
**/
VOID
Split2MPageTo4K (
IN EFI_PHYSICAL_ADDRESS PhysicalAddress,
IN OUT UINT64 *PageEntry2M,
IN EFI_PHYSICAL_ADDRESS StackBase,
IN UINTN StackSize,
IN EFI_PHYSICAL_ADDRESS GhcbBase,
IN UINTN GhcbSize
);
/**
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.
@param[in] GhcbBase GHCB page area base address.
@param[in] GhcbSize GHCB page area size.
@return The address of 4 level page map.
**/
UINTN
CreateIdentityMappingPageTables (
IN EFI_PHYSICAL_ADDRESS StackBase,
IN UINTN StackSize,
IN EFI_PHYSICAL_ADDRESS GhcbBase,
IN UINTN GhcbkSize
);
/**
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
);
/**
Clear legacy memory located at the first 4K-page.
This function traverses the whole HOB list to check if memory from 0 to 4095
exists and has not been allocated, and then clear it if so.
@param HobStart The start of HobList passed to DxeCore.
**/
VOID
ClearFirst4KPage (
IN VOID *HobStart
);
/**
Return configure status of NULL pointer detection feature.
@return TRUE NULL pointer detection feature is enabled
@return FALSE NULL pointer detection feature is disabled
**/
BOOLEAN
IsNullDetectionEnabled (
VOID
);
/**
Prevent the memory pages used for page table from been overwritten.
@param[in] PageTableBase Base address of page table (CR3).
@param[in] Level4Paging Level 4 paging flag.
**/
VOID
EnablePageTableProtection (
IN UINTN PageTableBase,
IN BOOLEAN Level4Paging
);
/**
This API provides a way to allocate memory for page table.
This API can be called more than once to allocate memory for page tables.
Allocates the number of 4KB pages and returns a pointer to the allocated
buffer. The buffer returned is aligned on a 4KB boundary.
If Pages is 0, then NULL is returned.
If there is not enough memory remaining to satisfy the request, then NULL is
returned.
@param Pages The number of 4 KB pages to allocate.
@return A pointer to the allocated buffer or NULL if allocation fails.
**/
VOID *
AllocatePageTableMemory (
IN UINTN Pages
);
#endif
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