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-rw-r--r--OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h111
1 files changed, 69 insertions, 42 deletions
diff --git a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h
index e7b5634b45..7dd1bbe0eb 100644
--- a/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h
+++ b/OvmfPkg/Library/BaseMemEncryptSevLib/X64/VirtualMemory.h
@@ -2,18 +2,18 @@
Virtual Memory Management Services to set or clear the memory encryption bit
-Copyright (c) 2006 - 2016, Intel Corporation. All rights reserved.<BR>
-Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
+ Copyright (c) 2006 - 2016, 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
+ 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.
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT
+ WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-Code is derived from MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.h
+ Code is derived from MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.h
**/
@@ -38,12 +38,15 @@ Code is derived from MdeModulePkg/Core/DxeIplPeim/X64/VirtualMemory.h
typedef union {
struct {
- UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory
+ 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 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 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
@@ -59,19 +62,25 @@ typedef union {
//
typedef union {
struct {
- UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory
+ 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 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 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 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
+ UINT64 Nx:1; // 0 = Execute Code,
+ // 1 = No Code Execution
} Bits;
UINT64 Uint64;
} PAGE_TABLE_4K_ENTRY;
@@ -81,21 +90,27 @@ typedef union {
//
typedef union {
struct {
- UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory
+ 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 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 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 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
+ UINT64 Nx:1; // 0 = Execute Code,
+ // 1 = No Code Execution
} Bits;
UINT64 Uint64;
} PAGE_TABLE_ENTRY;
@@ -105,21 +120,27 @@ typedef union {
//
typedef union {
struct {
- UINT64 Present:1; // 0 = Not present in memory, 1 = Present in memory
+ 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 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 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 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
+ UINT64 Nx:1; // 0 = Execute Code,
+ // 1 = No Code Execution
} Bits;
UINT64 Uint64;
} PAGE_TABLE_1G_ENTRY;
@@ -152,7 +173,8 @@ typedef union {
#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_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))
@@ -165,16 +187,20 @@ typedef struct {
/**
- This function clears memory encryption bit for the memory region specified by PhysicalAddress
- and length from the current page table context.
+ This function clears memory encryption bit for the memory region specified by
+ PhysicalAddress and length from the current page table context.
- @param[in] PhysicalAddress The physical address that is the start address of a memory region.
+ @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
+ @param[in] Flush Flush the caches before applying the
+ encryption mask
- @retval RETURN_SUCCESS The attributes were cleared for the memory region.
+ @retval RETURN_SUCCESS The attributes were cleared for the
+ memory region.
@retval RETURN_INVALID_PARAMETER Number of pages is zero.
- @retval RETURN_UNSUPPORTED Setting the memory encyrption attribute is not supported
+ @retval RETURN_UNSUPPORTED Setting the memory encyrption attribute
+ is not supported
**/
RETURN_STATUS
EFIAPI
@@ -189,16 +215,17 @@ InternalMemEncryptSevSetMemoryDecrypted (
This function sets memory encryption bit for the memory region specified by
PhysicalAddress and length from the current page table context.
- @param[in] PhysicalAddress The physical address that is the start address
- of a memory region.
+ @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_SUCCESS The attributes were cleared for the
+ memory region.
@retval RETURN_INVALID_PARAMETER Number of pages is zero.
- @retval RETURN_UNSUPPORTED Setting the memory encyrption attribute is
- not supported
+ @retval RETURN_UNSUPPORTED Setting the memory encyrption attribute
+ is not supported
**/
RETURN_STATUS
EFIAPI
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 14:25:15 +0000