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MdeModulePkg: Add VarCheckHiiLibMmDependency library.

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VarCheckHiiLibMmDependency retrieve data (mVarCheckHiiBin) at the end
of the DXE phase, and pass the acquired data to the
VarCheckHiiLibStandaloneMm through a communication protocol.

Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Star Zeng <star.zeng@intel.com>
Cc: Hongbin1 Zhang <hongbin1.zhang@intel.com>
Cc: Wei6 Xu <wei6.xu@intel.com>
Cc: Dun Tan <dun.tan@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>

Signed-off-by: Yuanhao Xie <yuanhao.xie@intel.com>
This commit is contained in:
xieyuanh 2024-06-03 10:52:53 +08:00 committed by mergify[bot]
parent 4aea90ea53
commit 6b3ac9cbf8
4 changed files with 199 additions and 0 deletions
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7
MdeModulePkg/Library/VarCheckHiiLib/VarCheckHii.h
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@ -51,4 +51,11 @@ DumpVarCheckHii (
IN UINTN VarCheckHiiBinSize
);
#define VAR_CHECK_RECEIVED_HII_BIN_HANDLER_GUID \
{ \
0xe63095c7, 0x2b34, 0x4163, { 0x80, 0x3d, 0xc8, 0x3c, 0x2e, 0xd6, 0xa0, 0x37 } \
}
extern EFI_GUID gVarCheckReceivedHiiBinHandlerGuid;
#endif

1
MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiGen.c
View File

@ -7,6 +7,7 @@ SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "VarCheckHiiGen.h"
#include "VarCheckHii.h"
VAR_CHECK_HII_VARIABLE_HEADER *mVarCheckHiiBin = NULL;
UINTN mVarCheckHiiBinSize = 0;

138
MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibMmDependency.c Normal file
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@ -0,0 +1,138 @@
/** @file
VarCheckHiiLib Dependency library.
It sends HII variable checking data to SMM via the MM Communication protocol.
Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Uefi.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Library/DebugLib.h>
#include <Protocol/MmCommunication.h>
#include <Guid/PiSmmCommunicationRegionTable.h>
#include "InternalVarCheckStructure.h"
#include "VarCheckHiiGen.h"
#include "VarCheckHii.h"
#include <Library/UefiLib.h>
#include <Guid/EventGroup.h>
extern VAR_CHECK_HII_VARIABLE_HEADER *mVarCheckHiiBin;
extern UINTN mVarCheckHiiBinSize;
EFI_GUID gVarCheckReceivedHiiBinHandlerGuid = VAR_CHECK_RECEIVED_HII_BIN_HANDLER_GUID;
/**
Sends HII variable checking data to SMM at the end of DXE phase.
This function is triggered by the End of DXE. It locates a memory
region for MM communication, prepares the communication buffer with HII variable
checking data, and communicates with SMM using the MM Communication protocol.
@param[in] Event Event whose notification function is being invoked.
@param[in] Context The pointer to the notification function's context, which
is implementation-dependent.
**/
VOID
EFIAPI
VarCheckHiiLibSmmEndOfDxeNotify (
IN EFI_EVENT Event,
IN VOID *Context
)
{
EFI_STATUS Status;
EFI_MM_COMMUNICATION_PROTOCOL *MmCommunication;
EFI_MM_COMMUNICATE_HEADER *CommHeader;
EDKII_PI_SMM_COMMUNICATION_REGION_TABLE *PiSmmCommunicationRegionTable;
EFI_MEMORY_DESCRIPTOR *MmCommMemRegion;
UINTN CommBufferSize;
UINTN Index;
VAR_CHECK_HII_VARIABLE_HEADER *VarCheckHiiVariable;
DEBUG ((DEBUG_INFO, "%a starts.\n", __func__));
VarCheckHiiGen ();
if ((mVarCheckHiiBinSize == 0) || (mVarCheckHiiBin == NULL)) {
DEBUG ((DEBUG_INFO, "%a: mVarCheckHiiBinSize = 0x%x, mVarCheckHiiBin = 0x%x \n", __func__, mVarCheckHiiBinSize, mVarCheckHiiBin));
return;
}
//
// Retrieve SMM Communication Region Table
//
Status = EfiGetSystemConfigurationTable (
&gEdkiiPiSmmCommunicationRegionTableGuid,
(VOID **)&PiSmmCommunicationRegionTable
);
if (EFI_ERROR (Status)) {
DEBUG ((DEBUG_ERROR, "%a: Failed to get PiSmmCommunicationRegionTable - %r\n", __func__, Status));
return;
}
ASSERT (PiSmmCommunicationRegionTable != NULL);
//
// Find a memory region for MM communication
//
CommBufferSize = 0;
MmCommMemRegion = (EFI_MEMORY_DESCRIPTOR *)(PiSmmCommunicationRegionTable + 1);
for (Index = 0; Index < PiSmmCommunicationRegionTable->NumberOfEntries; Index++) {
if (MmCommMemRegion->Type == EfiConventionalMemory) {
CommBufferSize = EFI_PAGES_TO_SIZE ((UINTN)MmCommMemRegion->NumberOfPages);
if (CommBufferSize >= (sizeof (EFI_MM_COMMUNICATE_HEADER) + mVarCheckHiiBinSize)) {
break;
}
}
MmCommMemRegion = (EFI_MEMORY_DESCRIPTOR *)((UINT8 *)MmCommMemRegion + PiSmmCommunicationRegionTable->DescriptorSize);
}
if (Index >= PiSmmCommunicationRegionTable->NumberOfEntries) {
DEBUG ((DEBUG_ERROR, "%a: Failed to find a suitable memory region for MM communication!\n", __func__));
return;
}
//
// Prepare the communication buffer
//
CommHeader = (EFI_MM_COMMUNICATE_HEADER *)(UINTN)MmCommMemRegion->PhysicalStart;
CommBufferSize = OFFSET_OF (EFI_MM_COMMUNICATE_HEADER, Data) + mVarCheckHiiBinSize;
ZeroMem (CommHeader, CommBufferSize);
CopyGuid (&CommHeader->HeaderGuid, &gVarCheckReceivedHiiBinHandlerGuid);
CommHeader->MessageLength = mVarCheckHiiBinSize;
VarCheckHiiVariable = (VAR_CHECK_HII_VARIABLE_HEADER *)(CommHeader->Data);
CopyMem (VarCheckHiiVariable, mVarCheckHiiBin, mVarCheckHiiBinSize);
//
// Locate the MM Communication protocol and signal SMI
//
Status = gBS->LocateProtocol (&gEfiMmCommunicationProtocolGuid, NULL, (VOID **)&MmCommunication);
if (!EFI_ERROR (Status)) {
Status = MmCommunication->Communicate (MmCommunication, CommHeader, &CommBufferSize);
DEBUG ((DEBUG_INFO, "%a: Communicate to smm environment = %r\n", __func__, Status));
} else {
DEBUG ((DEBUG_ERROR, "%a: Failed to locate MmCommunication protocol - %r\n", __func__, Status));
return;
}
DEBUG ((DEBUG_INFO, "%a ends.\n", __func__));
return;
}
/**
Constructor function of the VarCheckHiiLibMmDependency.
@param ImageHandle The firmware allocated handle for the EFI image.
@param SystemTable A pointer to the Management mode System Table.
@retval EFI_SUCCESS The protocol was successfully installed into the DXE database.
**/
EFI_STATUS
EFIAPI
VarCheckHiiLibMmDependencyConstructor (
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
EFI_STATUS Status;
EFI_EVENT Event;
DEBUG ((DEBUG_INFO, "%a starts.\n", __func__));
Status = gBS->CreateEventEx (EVT_NOTIFY_SIGNAL, TPL_NOTIFY, VarCheckHiiLibSmmEndOfDxeNotify, NULL, &gEfiEndOfDxeEventGroupGuid, &Event);
ASSERT_EFI_ERROR (Status);
DEBUG ((DEBUG_INFO, "%a ends.\n", __func__));
return Status;
}

53
MdeModulePkg/Library/VarCheckHiiLib/VarCheckHiiLibMmDependency.inf Normal file
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@ -0,0 +1,53 @@
## @file
# VarCheckHiiLib Dependency library.
#
# Copyright (c) 2024, Intel Corporation. All rights reserved.<BR>
#
# SPDX-License-Identifier: BSD-2-Clause-Patent
#
##
[Defines]
INF_VERSION = 0x0001001A
BASE_NAME = VarCheckHiiLibMmDependency
FILE_GUID = DF61C3DC-B08C-44B7-B771-9E4BCBBE0811
MODULE_TYPE = DXE_DRIVER
LIBRARY_CLASS = NULL
CONSTRUCTOR = VarCheckHiiLibMmDependencyConstructor
[Sources]
VarCheckHiiLibMmDependency.c
VarCheckHii.h
VarCheckHiiGenFromFv.c
VarCheckHiiGenFromHii.c
VarCheckHiiGen.c
VarCheckHiiGen.h
InternalVarCheckStructure.h
[Packages]
MdePkg/MdePkg.dec
MdeModulePkg/MdeModulePkg.dec
[LibraryClasses]
DebugLib
UefiBootServicesTableLib
BaseLib
BaseMemoryLib
MemoryAllocationLib
UefiLib
PcdLib
[Guids]
gEdkiiIfrBitVarstoreGuid
gEfiEndOfDxeEventGroupGuid
gEdkiiPiSmmCommunicationRegionTableGuid
[Protocols]
gEfiMmEndOfDxeProtocolGuid
gEfiMmCommunicationProtocolGuid
gEfiFirmwareVolume2ProtocolGuid ## SOMETIMES_CONSUMES
gEfiFirmwareVolumeBlock2ProtocolGuid ## SOMETIMES_CONSUMES
gEfiHiiDatabaseProtocolGuid ## SOMETIMES_CONSUMES
[Pcd]
gEfiMdeModulePkgTokenSpaceGuid.PcdVarCheckVfrDriverGuidArray ## SOMETIMES_CONSUMES