09719a01b1
When SEV is enabled, the DMA must be performed on unencrypted pages. So when get asked to perfom FWCFG DMA read or write, we allocate a intermediate (bounce buffer) unencrypted buffer and use this buffer for DMA read or write. Cc: Jordan Justen <jordan.l.justen@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com>
58 lines
1.6 KiB
INI
58 lines
1.6 KiB
INI
## @file
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#
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# Stateful, implicitly initialized fw_cfg library.
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#
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# Copyright (C) 2013, Red Hat, Inc.
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# Copyright (c) 2008 - 2012, Intel Corporation. All rights reserved.<BR>
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# Copyright (c) 2017, AMD Incorporated. All rights reserved.<BR>
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#
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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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#
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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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##
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[Defines]
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INF_VERSION = 0x00010005
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BASE_NAME = QemuFwCfgDxeLib
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FILE_GUID = 80474090-55e7-4c28-b25c-9f236ba41f28
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = QemuFwCfgLib|DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SMM_DRIVER
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CONSTRUCTOR = QemuFwCfgInitialize
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#
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# The following information is for reference only and not required by the build tools.
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#
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# VALID_ARCHITECTURES = IA32 X64
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#
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[Sources]
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QemuFwCfgLibInternal.h
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QemuFwCfgLib.c
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QemuFwCfgDxe.c
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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OvmfPkg/OvmfPkg.dec
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[LibraryClasses]
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BaseLib
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BaseMemoryLib
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DebugLib
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IoLib
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MemoryAllocationLib
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MemEncryptSevLib
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[Protocols]
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gEdkiiIoMmuProtocolGuid ## SOMETIMES_CONSUMES
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[Depex]
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gEdkiiIoMmuProtocolGuid OR gIoMmuAbsentProtocolGuid
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