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authorStar Zeng <star.zeng@intel.com>2017-07-21 11:36:29 +0800
committerStar Zeng <star.zeng@intel.com>2017-07-26 16:05:51 +0800
commitb926a05bb93705fc2b59b50c55099353bd1ac49f (patch)
tree0e1db0fcd5db227dd58fe3ed661d9f7a6e8f6beb /MdeModulePkg
parentfcccba378bebd740bfa3e36d684215d739421181 (diff)
downloadedk2-b926a05bb93705fc2b59b50c55099353bd1ac49f.tar.gz
edk2-b926a05bb93705fc2b59b50c55099353bd1ac49f.tar.bz2
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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>
Diffstat (limited to 'MdeModulePkg')
-rw-r--r--MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c199
-rw-r--r--MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf6
2 files changed, 147 insertions, 58 deletions
diff --git a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c
index 9659f014e9..b75f81e69e 100644
--- a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c
+++ b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.c
@@ -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],
diff --git a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
index 48cdb9c66a..f3120ccb42 100644
--- a/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
+++ b/MdeModulePkg/Library/SmmLockBoxLib/SmmLockBoxDxeLib.inf
@@ -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