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MdeModulePkg SmmLockBoxDxeLib: Get SmmCommRegion for COMM buffer 

REF: https://bugzilla.tianocore.org/show_bug.cgi?id=593

Currently, SmmCommunciate fails in RestoreLockBox after
SmmReadyToLock since COMM buffer is in stack instead of
using SmmCommRegion by gEdkiiPiSmmCommunicationRegionTableGuid.

This patch is to get SmmCommRegion by
gEdkiiPiSmmCommunicationRegionTableGuid for COMM buffer

Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Baraneedharan Anbazhagan <anbazhagan@hp.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Star Zeng <star.zeng@intel.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
This commit is contained in:
Star Zeng 2017-07-21 11:36:29 +08:00
parent fcccba378b
commit b926a05bb9
2 changed files with 147 additions and 58 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

199
MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c
View File

@ -1,6 +1,6 @@
/** @file
Copyright (c) 2010, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions
@ -20,11 +20,108 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
#include <Library/BaseMemoryLib.h>
#include <Library/LockBoxLib.h>
#include <Library/DebugLib.h>
#include <Library/UefiLib.h>
#include <Protocol/SmmCommunication.h>
#include <Guid/SmmLockBox.h>
#include <Guid/PiSmmCommunicationRegionTable.h>
#include "SmmLockBoxLibPrivate.h"
EFI_SMM_COMMUNICATION_PROTOCOL *mLockBoxSmmCommProtocol = NULL;
UINT8 *mLockBoxSmmCommBuffer = NULL;
/**
Get smm communication protocol for lockbox.
@return Pointer to smm communication protocol, NULL if not found.
**/
EFI_SMM_COMMUNICATION_PROTOCOL *
LockBoxGetSmmCommProtocol (
VOID
)
{
EFI_STATUS Status;
//
// If the protocol has been got previously, return it.
//
if (mLockBoxSmmCommProtocol != NULL) {
return mLockBoxSmmCommProtocol;
}
Status = gBS->LocateProtocol (
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID **)&mLockBoxSmmCommProtocol
);
if (EFI_ERROR (Status)) {
mLockBoxSmmCommProtocol = NULL;
}
return mLockBoxSmmCommProtocol;
}
/**
Get smm communication buffer for lockbox.
@return Pointer to smm communication buffer, NULL if not found.
**/
UINT8 *
LockBoxGetSmmCommBuffer (
VOID
)
{
EFI_STATUS Status;
UINTN MinimalSizeNeeded;
EDKII_PI_SMM_COMMUNICATION_REGION_TABLE *PiSmmCommunicationRegionTable;
UINT32 Index;
EFI_MEMORY_DESCRIPTOR *Entry;
UINTN Size;
//
// If the buffer has been got previously, return it.
//
if (mLockBoxSmmCommBuffer != NULL) {
return mLockBoxSmmCommBuffer;
}
MinimalSizeNeeded = sizeof (EFI_GUID) +
sizeof (UINTN) +
MAX (sizeof (EFI_SMM_LOCK_BOX_PARAMETER_SAVE),
MAX (sizeof (EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES),
MAX (sizeof (EFI_SMM_LOCK_BOX_PARAMETER_UPDATE),
MAX (sizeof (EFI_SMM_LOCK_BOX_PARAMETER_RESTORE),
sizeof (EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE)))));
Status = EfiGetSystemConfigurationTable (
&gEdkiiPiSmmCommunicationRegionTableGuid,
(VOID **) &PiSmmCommunicationRegionTable
);
if (EFI_ERROR (Status)) {
mLockBoxSmmCommBuffer = NULL;
return mLockBoxSmmCommBuffer;
}
ASSERT (PiSmmCommunicationRegionTable != NULL);
Entry = (EFI_MEMORY_DESCRIPTOR *) (PiSmmCommunicationRegionTable + 1);
Size = 0;
for (Index = 0; Index < PiSmmCommunicationRegionTable->NumberOfEntries; Index++) {
if (Entry->Type == EfiConventionalMemory) {
Size = EFI_PAGES_TO_SIZE ((UINTN) Entry->NumberOfPages);
if (Size >= MinimalSizeNeeded) {
break;
}
}
Entry = (EFI_MEMORY_DESCRIPTOR *) ((UINT8 *) Entry + PiSmmCommunicationRegionTable->DescriptorSize);
}
if (Index >= PiSmmCommunicationRegionTable->NumberOfEntries) {
mLockBoxSmmCommBuffer = NULL;
} else {
mLockBoxSmmCommBuffer = (UINT8 *) (UINTN) Entry->PhysicalStart;
}
return mLockBoxSmmCommBuffer;
}
/**
This function will save confidential information to lockbox.
@ -52,7 +149,8 @@ SaveLockBox (
EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
EFI_SMM_LOCK_BOX_PARAMETER_SAVE *LockBoxParameterSave;
EFI_SMM_COMMUNICATE_HEADER *CommHeader;
UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SAVE)];
UINT8 TempCommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SAVE)];
UINT8 *CommBuffer;
UINTN CommSize;
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib SaveLockBox - Enter\n"));
@ -64,21 +162,18 @@ SaveLockBox (
return EFI_INVALID_PARAMETER;
}
//
// Get needed resource
//
Status = gBS->LocateProtocol (
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID **)&SmmCommunication
);
if (EFI_ERROR (Status)) {
SmmCommunication = LockBoxGetSmmCommProtocol ();
if (SmmCommunication == NULL) {
return EFI_NOT_STARTED;
}
//
// Prepare parameter
//
CommBuffer = LockBoxGetSmmCommBuffer ();
if (CommBuffer == NULL) {
CommBuffer = &TempCommBuffer[0];
}
CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
CommHeader->MessageLength = sizeof(*LockBoxParameterSave);
@ -94,7 +189,7 @@ SaveLockBox (
//
// Send command
//
CommSize = sizeof(CommBuffer);
CommSize = sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SAVE);
Status = SmmCommunication->Communicate (
SmmCommunication,
&CommBuffer[0],
@ -136,7 +231,8 @@ SetLockBoxAttributes (
EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES *LockBoxParameterSetAttributes;
EFI_SMM_COMMUNICATE_HEADER *CommHeader;
UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES)];
UINT8 TempCommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES)];
UINT8 *CommBuffer;
UINTN CommSize;
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib SetLockBoxAttributes - Enter\n"));
@ -149,21 +245,18 @@ SetLockBoxAttributes (
return EFI_INVALID_PARAMETER;
}
//
// Get needed resource
//
Status = gBS->LocateProtocol (
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID **)&SmmCommunication
);
if (EFI_ERROR (Status)) {
SmmCommunication = LockBoxGetSmmCommProtocol ();
if (SmmCommunication == NULL) {
return EFI_NOT_STARTED;
}
//
// Prepare parameter
//
CommBuffer = LockBoxGetSmmCommBuffer ();
if (CommBuffer == NULL) {
CommBuffer = &TempCommBuffer[0];
}
CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
CommHeader->MessageLength = sizeof(*LockBoxParameterSetAttributes);
@ -178,7 +271,7 @@ SetLockBoxAttributes (
//
// Send command
//
CommSize = sizeof(CommBuffer);
CommSize = sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_SET_ATTRIBUTES);
Status = SmmCommunication->Communicate (
SmmCommunication,
&CommBuffer[0],
@ -225,7 +318,8 @@ UpdateLockBox (
EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
EFI_SMM_LOCK_BOX_PARAMETER_UPDATE *LockBoxParameterUpdate;
EFI_SMM_COMMUNICATE_HEADER *CommHeader;
UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_UPDATE)];
UINT8 TempCommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_UPDATE)];
UINT8 *CommBuffer;
UINTN CommSize;
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib UpdateLockBox - Enter\n"));
@ -237,21 +331,18 @@ UpdateLockBox (
return EFI_INVALID_PARAMETER;
}
//
// Get needed resource
//
Status = gBS->LocateProtocol (
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID **)&SmmCommunication
);
if (EFI_ERROR (Status)) {
SmmCommunication = LockBoxGetSmmCommProtocol ();
if (SmmCommunication == NULL) {
return EFI_NOT_STARTED;
}
//
// Prepare parameter
//
CommBuffer = LockBoxGetSmmCommBuffer ();
if (CommBuffer == NULL) {
CommBuffer = &TempCommBuffer[0];
}
CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
CommHeader->MessageLength = sizeof(*LockBoxParameterUpdate);
@ -268,7 +359,7 @@ UpdateLockBox (
//
// Send command
//
CommSize = sizeof(CommBuffer);
CommSize = sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_UPDATE);
Status = SmmCommunication->Communicate (
SmmCommunication,
&CommBuffer[0],
@ -316,7 +407,8 @@ RestoreLockBox (
EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
EFI_SMM_LOCK_BOX_PARAMETER_RESTORE *LockBoxParameterRestore;
EFI_SMM_COMMUNICATE_HEADER *CommHeader;
UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE)];
UINT8 TempCommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE)];
UINT8 *CommBuffer;
UINTN CommSize;
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib RestoreLockBox - Enter\n"));
@ -330,21 +422,18 @@ RestoreLockBox (
return EFI_INVALID_PARAMETER;
}
//
// Get needed resource
//
Status = gBS->LocateProtocol (
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID **)&SmmCommunication
);
if (EFI_ERROR (Status)) {
SmmCommunication = LockBoxGetSmmCommProtocol ();
if (SmmCommunication == NULL) {
return EFI_NOT_STARTED;
}
//
// Prepare parameter
//
CommBuffer = LockBoxGetSmmCommBuffer ();
if (CommBuffer == NULL) {
CommBuffer = &TempCommBuffer[0];
}
CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
CommHeader->MessageLength = sizeof(*LockBoxParameterRestore);
@ -364,7 +453,7 @@ RestoreLockBox (
//
// Send command
//
CommSize = sizeof(CommBuffer);
CommSize = sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE);
Status = SmmCommunication->Communicate (
SmmCommunication,
&CommBuffer[0],
@ -403,26 +492,24 @@ RestoreAllLockBoxInPlace (
EFI_SMM_COMMUNICATION_PROTOCOL *SmmCommunication;
EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE *LockBoxParameterRestoreAllInPlace;
EFI_SMM_COMMUNICATE_HEADER *CommHeader;
UINT8 CommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE)];
UINT8 TempCommBuffer[sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE)];
UINT8 *CommBuffer;
UINTN CommSize;
DEBUG ((EFI_D_INFO, "SmmLockBoxDxeLib RestoreAllLockBoxInPlace - Enter\n"));
//
// Get needed resource
//
Status = gBS->LocateProtocol (
&gEfiSmmCommunicationProtocolGuid,
NULL,
(VOID **)&SmmCommunication
);
if (EFI_ERROR (Status)) {
SmmCommunication = LockBoxGetSmmCommProtocol ();
if (SmmCommunication == NULL) {
return EFI_NOT_STARTED;
}
//
// Prepare parameter
//
CommBuffer = LockBoxGetSmmCommBuffer ();
if (CommBuffer == NULL) {
CommBuffer = &TempCommBuffer[0];
}
CommHeader = (EFI_SMM_COMMUNICATE_HEADER *)&CommBuffer[0];
CopyMem (&CommHeader->HeaderGuid, &gEfiSmmLockBoxCommunicationGuid, sizeof(gEfiSmmLockBoxCommunicationGuid));
CommHeader->MessageLength = sizeof(*LockBoxParameterRestoreAllInPlace);
@ -435,7 +522,7 @@ RestoreAllLockBoxInPlace (
//
// Send command
//
CommSize = sizeof(CommBuffer);
CommSize = sizeof(EFI_GUID) + sizeof(UINTN) + sizeof(EFI_SMM_LOCK_BOX_PARAMETER_RESTORE_ALL_IN_PLACE);
Status = SmmCommunication->Communicate (
SmmCommunication,
&CommBuffer[0],

6
MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
View File

@ -1,7 +1,7 @@
## @file
# DXE LockBox library instance.
#
# Copyright (c) 2010 - 2014, Intel Corporation. All rights reserved.<BR>
# Copyright (c) 2010 - 2017, Intel Corporation. All rights reserved.<BR>
#
# This program and the accompanying materials
# are licensed and made available under the terms and conditions
@ -42,9 +42,11 @@
BaseLib
BaseMemoryLib
DebugLib
UefiLib
[Guids]
gEfiSmmLockBoxCommunicationGuid ## SOMETIMES_CONSUMES ## GUID # Used to do smm communication
gEfiSmmLockBoxCommunicationGuid ## SOMETIMES_CONSUMES ## GUID # Used to do smm communication
gEdkiiPiSmmCommunicationRegionTableGuid ## SOMETIMES_CONSUMES ## SystemTable
[Protocols]
gEfiSmmCommunicationProtocolGuid ## SOMETIMES_CONSUMES