Files
system76-edk2/OvmfPkg/Library/QemuFwCfgLib/QemuFwCfgPeiLib.inf
Min Xu 6b27c11690 OvmfPkg: Check Tdx in QemuFwCfgPei to avoid DMA operation
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429

If TDX is enabled then we do not support DMA operation in PEI phase.
This is mainly because DMA in TDX guest requires using bounce buffer
(which need to allocate dynamic memory and allocating a PAGE size'd
buffer can be challenge in PEI phase).

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
2022-04-02 08:15:12 +00:00

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1.1 KiB
INI

## @file
#
# Stateful, implicitly initialized fw_cfg library.
#
# Copyright (C) 2013, Red Hat, Inc.
# Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = QemuFwCfgPeiLib
FILE_GUID = ddd4f5f0-5304-42a8-9efa-d14bf11a3533
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = QemuFwCfgLib|PEIM
CONSTRUCTOR = QemuFwCfgInitialize
#
# The following information is for reference only and not required by the build tools.
#
# VALID_ARCHITECTURES = IA32 X64
#
[Sources]
QemuFwCfgLibInternal.h
QemuFwCfgLib.c
QemuFwCfgPei.c
[Packages]
MdePkg/MdePkg.dec
OvmfPkg/OvmfPkg.dec
[LibraryClasses]
BaseLib
BaseMemoryLib
DebugLib
IoLib
MemoryAllocationLib
MemEncryptSevLib
[Pcd]
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfWorkAreaBase