5a217a0649
The trigger to actually save the boot script is the installation of EFI_DXE_SMM_READY_TO_LOCK_PROTOCOL, to be performed by any DXE driver. Installation of the protocol also locks down SMM (as its name indicates) and (in theory) prevents further LockBox access. We cannot install this protocol before BdsLibBootViaBootOption() is called (eg. in OVMF's PlatformBdsPolicyBehavior()), because BdsLibBootViaBootOption() calls EFI_ACPI_S3_SAVE_PROTOCOL.S3Save(), which needs LockBox access. We also can't install the protocol after BdsLibBootViaBootOption() returns, simply because control is never returned to us. Therefore modify our EFI_ACPI_S3_SAVE_PROTOCOL implementation so that the boot script is prepared and installed internally to S3Save(). (The boot script must contain at least one opcode, otherwise S3BootScriptLib runs into an assertion failure. We add a harmless (no-op) "information" opcode.) Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com> git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15305 6f19259b-4bc3-4df7-8a09-765794883524
79 lines
2.7 KiB
INI
79 lines
2.7 KiB
INI
## @file
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# Component description file for AcpiS3Save module.
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#
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# This is an implementation of the ACPI S3 Save protocol.
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# Copyright (c) 2006 - 2011, Intel Corporation. All rights reserved.<BR>
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#
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# This program and the accompanying materials are
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# 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 = AcpiS3SaveDxe
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FILE_GUID = 6B79BBC0-26B9-4FE9-B631-551D8AB078C6
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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ENTRY_POINT = InstallAcpiS3Save
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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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AcpiS3Save.h
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AcpiS3Save.c
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[Packages]
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MdePkg/MdePkg.dec
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MdeModulePkg/MdeModulePkg.dec
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IntelFrameworkPkg/IntelFrameworkPkg.dec
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IntelFrameworkModulePkg/IntelFrameworkModulePkg.dec
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[LibraryClasses]
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PcdLib
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UefiRuntimeServicesTableLib
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UefiBootServicesTableLib
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UefiDriverEntryPoint
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BaseMemoryLib
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HobLib
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UefiLib
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LockBoxLib
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DebugLib
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DxeServicesLib
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[Guids]
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gEfiAcpiVariableGuid # ALWAYS_CONSUMED
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gEfiAcpiS3ContextGuid # ALWAYS_CONSUMED
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gEfiAcpi20TableGuid # ALWAYS_CONSUMED System Table
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gEfiAcpi10TableGuid # ALWAYS_CONSUMED System Table
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[Protocols]
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gEfiAcpiS3SaveProtocolGuid # PROTOCOL ALWAYS_PRODUCED
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gEfiLegacyBiosProtocolGuid # PROTOCOL ALWAYS_CONSUMED
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gEfiLegacyRegion2ProtocolGuid # PROTOCOL SOMETIMES_CONSUMED
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gFrameworkEfiMpServiceProtocolGuid # PROTOCOL SOMETIMES_CONSUMED
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gEfiS3SaveStateProtocolGuid # PROTOCOL ALWAYS_CONSUMED
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gEfiDxeSmmReadyToLockProtocolGuid # PROTOCOL ALWAYS_CONSUMED
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[FeaturePcd]
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gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdPlatformCsmSupport ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdDxeIplSwitchToLongMode
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[Pcd]
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gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdS3AcpiReservedMemorySize ## CONSUMES
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gEfiIntelFrameworkModulePkgTokenSpaceGuid.PcdS3BootScriptStackSize ## CONSUMES
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gEfiMdeModulePkgTokenSpaceGuid.PcdUse1GPageTable
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[Depex]
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gEfiVariableArchProtocolGuid AND gEfiVariableWriteArchProtocolGuid AND gEfiS3SaveStateProtocolGuid
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