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61a044c6c1
In the next three patches, we're going to modify three modules under OvmfPkg. When OVMF is built with -D SMM_REQUIRE and runs in an SEV guest, each affected module will have to know the page range that covers the initial (pre-SMBASE relocation) SMRAM save state map. Add a helper function to MemEncryptSevLib that calculates the "base address" and "number of pages" constants for this page range. (In a RELEASE build -- i.e., with assertions disabled and optimization enabled --, the helper function can be compiled to store two constants determined at compile time.) Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Brijesh Singh <brijesh.singh@amd.com> Cc: Jordan Justen <jordan.l.justen@intel.com> Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Tested-by: Brijesh Singh <brijesh.singh@amd.com> Reviewed-by: Brijesh Singh <brijesh.singh@amd.com>
58 lines
1.5 KiB
INI
58 lines
1.5 KiB
INI
## @file
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# Library provides the helper functions for SEV guest
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#
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# Copyright (c) 2017 Advanced Micro Devices. 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
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# License which accompanies this distribution. The full text of the license
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# may be found at 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
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# IMPLIED.
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#
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#
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##
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[Defines]
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INF_VERSION = 1.25
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BASE_NAME = MemEncryptSevLib
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FILE_GUID = c1594631-3888-4be4-949f-9c630dbc842b
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MODULE_TYPE = BASE
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VERSION_STRING = 1.0
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LIBRARY_CLASS = MemEncryptSevLib|PEIM DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SMM_DRIVER UEFI_DRIVER
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#
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# The following information is for reference only and not required by the build
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# tools.
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#
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# VALID_ARCHITECTURES = IA32 X64
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#
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[Packages]
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MdeModulePkg/MdeModulePkg.dec
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MdePkg/MdePkg.dec
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OvmfPkg/OvmfPkg.dec
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UefiCpuPkg/UefiCpuPkg.dec
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[Sources.X64]
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MemEncryptSevLibInternal.c
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X64/MemEncryptSevLib.c
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X64/VirtualMemory.c
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[Sources.IA32]
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Ia32/MemEncryptSevLib.c
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MemEncryptSevLibInternal.c
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[LibraryClasses]
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BaseLib
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CacheMaintenanceLib
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CpuLib
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DebugLib
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MemoryAllocationLib
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PcdLib
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[FeaturePcd]
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gUefiOvmfPkgTokenSpaceGuid.PcdSmmSmramRequire
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