sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe: Add support for PCD PcdPteMemoryEncryptionAddressOrMask

Browse Source 
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>
This commit is contained in:
Leo Duran
2017-02-27 01:43:06 +08:00
committed by Star Zeng
parent 787a085b0f
commit ab1a5a58c9
4 changed files with 23 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
MdeModulePkg/Universal/Acpi/BootScriptExecutorDxe/BootScriptExecutorDxe.inf
View File

@@ -5,6 +5,7 @@
# depends on any PEI or DXE service.
#
# 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
@@ -85,6 +86,7 @@
gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable ## SOMETIMES_CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdMemoryProfilePropertyMask ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdAcpiS3Enable ## CONSUMES
gEfiMdeModulePkgTokenSpaceGuid.PcdPteMemoryEncryptionAddressOrMask ## CONSUMES
[Depex]
gEfiLockBoxProtocolGuid