ab1a5a58c9
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. This module updates the under-4GB page tables configured by the S3-Resume code in UefiCpuPkg/Universal/Acpi/S3Resume2Pei. The mask is saved at module start (ScriptExecute.c), and applied when tables are expanded on-demand by page-faults above 4GB's (SetIdtEntry.c). CC: Jeff Fan <jeff.fan@intel.com> 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>
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
/** @file
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The header file for Boot Script Executer module.
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This driver is dispatched by Dxe core and the driver will reload itself to ACPI reserved memory
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in the entry point. The functionality is to interpret and restore the S3 boot script
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Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
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Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#ifndef _BOOT_SCRIPT_EXECUTOR_H_
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#define _BOOT_SCRIPT_EXECUTOR_H_
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#include <PiDxe.h>
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#include <Library/BaseLib.h>
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#include <Library/UefiDriverEntryPoint.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/DebugLib.h>
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#include <Library/S3BootScriptLib.h>
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#include <Library/PeCoffLib.h>
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#include <Library/DxeServicesLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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#include <Library/UefiRuntimeServicesTableLib.h>
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#include <Library/PcdLib.h>
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#include <Library/CacheMaintenanceLib.h>
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#include <Library/TimerLib.h>
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#include <Library/UefiLib.h>
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#include <Library/DebugAgentLib.h>
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#include <Library/LockBoxLib.h>
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#include <Library/CpuExceptionHandlerLib.h>
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#include <Library/DevicePathLib.h>
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#include <Guid/AcpiS3Context.h>
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#include <Guid/BootScriptExecutorVariable.h>
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#include <Guid/MemoryProfile.h>
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#include <Protocol/DxeSmmReadyToLock.h>
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#include <IndustryStandard/Acpi.h>
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#define PAGING_1G_ADDRESS_MASK_64 0x000FFFFFC0000000ull
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/**
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a ASM function to transfer control to OS.
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@param S3WakingVector The S3 waking up vector saved in ACPI Facs table
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@param AcpiLowMemoryBase a buffer under 1M which could be used during the transfer
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**/
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VOID
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AsmTransferControl (
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IN UINT32 S3WakingVector,
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IN UINT32 AcpiLowMemoryBase
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);
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/**
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a 32bit ASM function to transfer control to OS.
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@param S3WakingVector The S3 waking up vector saved in ACPI Facs table
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@param AcpiLowMemoryBase a buffer under 1M which could be used during the transfer
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**/
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VOID
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AsmTransferControl32 (
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IN UINT32 S3WakingVector,
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IN UINT32 AcpiLowMemoryBase
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);
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/**
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a 16bit ASM function to transfer control to OS.
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**/
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VOID
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AsmTransferControl16 (
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VOID
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);
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/**
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Set a IDT entry for interrupt vector 3 for debug purpose.
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@param AcpiS3Context a pointer to a structure of ACPI_S3_CONTEXT
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**/
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VOID
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SetIdtEntry (
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IN ACPI_S3_CONTEXT *AcpiS3Context
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);
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extern UINT32 AsmFixAddress16;
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extern UINT32 AsmJmpAddr32;
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extern BOOLEAN mPage1GSupport;
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extern UINT64 mAddressEncMask;
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#endif //_BOOT_SCRIPT_EXECUTOR_H_
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