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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [PATCH v2 4/7] OvmfPkg/IndustryStandard: Introduce PageTable.h
We are going to use the page table structure in yet another place, collect the types and macro that can be used from another module rather that making yet another copy. Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=2490 Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx> --- CC: Tom Lendacky <thomas.lendacky@xxxxxxx> CC: Brijesh Singh <brijesh.singh@xxxxxxx> --- Notes: v2: - new patch .../IndustryStandard/PageTable.h} | 117 +------------- .../BaseMemEncryptSevLib/X64/VirtualMemory.h | 143 +----------------- 2 files changed, 5 insertions(+), 255 deletions(-) copy OvmfPkg/{Library/BaseMemEncryptSevLib/X64/VirtualMemory.h => Include/IndustryStandard/PageTable.h} (60%) diff --git a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h b/OvmfPkg/Include/IndustryStandard/PageTable.h similarity index 60% copy from OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h copy to OvmfPkg/Include/IndustryStandard/PageTable.h index 996f94f07ebb..e3da4e8cf21c 100644 --- a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h +++ b/OvmfPkg/Include/IndustryStandard/PageTable.h @@ -1,6 +1,6 @@ /** @file - Virtual Memory Management Services to set or clear the memory encryption bit + x86_64 Page Tables structures Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR> Copyright (c) 2017 - 2020, AMD Incorporated. All rights reserved.<BR> @@ -11,17 +11,10 @@ **/ -#ifndef __VIRTUAL_MEMORY__ -#define __VIRTUAL_MEMORY__ +#ifndef __PAGE_TABLE_H__ +#define __PAGE_TABLE_H__ -#include <Library/BaseLib.h> -#include <Library/BaseMemoryLib.h> -#include <Library/CacheMaintenanceLib.h> -#include <Library/DebugLib.h> -#include <Library/MemoryAllocationLib.h> -#include <Uefi.h> - -#define SYS_CODE64_SEL 0x38 +#include <Base.h> #pragma pack(1) @@ -165,106 +158,4 @@ typedef union { #define PTE_OFFSET(x) ( (x >> 12) & PAGETABLE_ENTRY_MASK) #define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull -#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; - -/** - Return the pagetable memory encryption mask. - - @return The pagetable memory encryption mask. - -**/ -UINT64 -EFIAPI -InternalGetMemEncryptionAddressMask ( - VOID - ); - -/** - This function clears memory encryption bit for the memory region specified by - PhysicalAddress and Length from the current page table context. - - @param[in] Cr3BaseAddress Cr3 Base Address (if zero then use - current CR3) - @param[in] PhysicalAddress The physical address that is the start - address of a memory region. - @param[in] Length The length of memory region - @param[in] Flush Flush the caches before applying the - encryption mask - - @retval RETURN_SUCCESS The attributes were cleared for the - memory region. - @retval RETURN_INVALID_PARAMETER Number of pages is zero. - @retval RETURN_UNSUPPORTED Clearing the memory encyrption attribute - is not supported -**/ -RETURN_STATUS -EFIAPI -InternalMemEncryptSevSetMemoryDecrypted ( - IN PHYSICAL_ADDRESS Cr3BaseAddress, - IN PHYSICAL_ADDRESS PhysicalAddress, - IN UINTN Length, - IN BOOLEAN Flush - ); - -/** - This function sets memory encryption bit for the memory region specified by - PhysicalAddress and Length from the current page table context. - - @param[in] Cr3BaseAddress Cr3 Base Address (if zero then use - current CR3) - @param[in] PhysicalAddress The physical address that is the start - address of a memory region. - @param[in] Length The length of memory region - @param[in] Flush Flush the caches before applying the - encryption mask - - @retval RETURN_SUCCESS The attributes were set for the memory - region. - @retval RETURN_INVALID_PARAMETER Number of pages is zero. - @retval RETURN_UNSUPPORTED Setting the memory encyrption attribute - is not supported -**/ -RETURN_STATUS -EFIAPI -InternalMemEncryptSevSetMemoryEncrypted ( - IN PHYSICAL_ADDRESS Cr3BaseAddress, - IN PHYSICAL_ADDRESS PhysicalAddress, - IN UINTN Length, - IN BOOLEAN Flush - ); - -/** - Returns the encryption state of the specified virtual address range. - - @param[in] Cr3BaseAddress Cr3 Base Address (if zero then use - current CR3) - @param[in] BaseAddress Base address to check - @param[in] Length Length of virtual address range - - @retval MemEncryptSevAddressRangeUnencrypted Address range is mapped - unencrypted - @retval MemEncryptSevAddressRangeEncrypted Address range is mapped - encrypted - @retval MemEncryptSevAddressRangeMixed Address range is mapped mixed - @retval MemEncryptSevAddressRangeError Address range is not mapped -**/ -MEM_ENCRYPT_SEV_ADDRESS_RANGE_STATE -EFIAPI -InternalMemEncryptSevGetAddressRangeState ( - IN PHYSICAL_ADDRESS Cr3BaseAddress, - IN PHYSICAL_ADDRESS BaseAddress, - IN UINTN Length - ); - #endif diff --git a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h index 996f94f07ebb..b621d811ca6f 100644 --- a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h +++ b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h @@ -20,151 +20,10 @@ #include <Library/DebugLib.h> #include <Library/MemoryAllocationLib.h> #include <Uefi.h> +#include <IndustryStandard/PageTable.h> #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_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 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 PAGETABLE_ENTRY_MASK ((1UL << 9) - 1) -#define PML4_OFFSET(x) ( (x >> 39) & PAGETABLE_ENTRY_MASK) -#define PDP_OFFSET(x) ( (x >> 30) & PAGETABLE_ENTRY_MASK) -#define PDE_OFFSET(x) ( (x >> 21) & PAGETABLE_ENTRY_MASK) -#define PTE_OFFSET(x) ( (x >> 12) & PAGETABLE_ENTRY_MASK) -#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull - #define PAGE_TABLE_POOL_ALIGNMENT BASE_2MB #define PAGE_TABLE_POOL_UNIT_SIZE SIZE_2MB #define PAGE_TABLE_POOL_UNIT_PAGES \ -- Anthony PERARD
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