sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fix the return status when physical presence variable and MemoryOverwriteRequestControl variable are corrupt.

Browse Source 
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Dong Guo <guo.dong@intel.com>
Reviewed-by: Fu Siyuan <siyuan.fu@intel.com>
Reviewed-by: Yao Jiewen <jiewen.yao@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15329 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Dong Guo
2014-03-17 05:46:53 +00:00
committed by gdong1
parent 9c12f2d77f
commit 8a8c6c962a
5 changed files with 83 additions and 62 deletions
Download Patch File Download Diff File Expand all files Collapse all files

51
SecurityPkg/Library/DxeTcgPhysicalPresenceLib/DxeTcgPhysicalPresenceLib.c
View File

@@ -8,7 +8,7 @@
ExecutePendingTpmRequest() will receive untrusted input and do validation.
Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
Copyright (c) 2006 - 2014, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
@@ -1059,6 +1059,9 @@ ExecutePendingTpmRequest (
sizeof (UINT8),
&NewFlags
);
if (EFI_ERROR (Status)) {
return;
}
}
@@ -1162,19 +1165,20 @@ TcgPhysicalPresenceLibProcessRequest (
&PpiFlags
);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
PpiFlags = FLAG_NO_PPI_PROVISION;
Status = gRT->SetVariable (
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
&gEfiPhysicalPresenceGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
sizeof (UINT8),
&PpiFlags
);
PpiFlags = FLAG_NO_PPI_PROVISION;
Status = gRT->SetVariable (
PHYSICAL_PRESENCE_FLAGS_VARIABLE,
&gEfiPhysicalPresenceGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
sizeof (UINT8),
&PpiFlags
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "[TPM] Set physical presence flag failed, Status = %r\n", Status));
return ;
}
ASSERT_EFI_ERROR (Status);
}
DEBUG ((EFI_D_ERROR, "[TPM] PpiFlags = %x, Status = %r\n", PpiFlags, Status));
DEBUG ((EFI_D_INFO, "[TPM] PpiFlags = %x\n", PpiFlags));
//
// This flags variable controls whether physical presence is required for TPM command.
@@ -1205,18 +1209,19 @@ TcgPhysicalPresenceLibProcessRequest (
&TcgPpData
);
if (EFI_ERROR (Status)) {
if (Status == EFI_NOT_FOUND) {
ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
Status = gRT->SetVariable (
PHYSICAL_PRESENCE_VARIABLE,
&gEfiPhysicalPresenceGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
DataSize,
&TcgPpData
);
ZeroMem ((VOID*)&TcgPpData, sizeof (TcgPpData));
DataSize = sizeof (EFI_PHYSICAL_PRESENCE);
Status = gRT->SetVariable (
PHYSICAL_PRESENCE_VARIABLE,
&gEfiPhysicalPresenceGuid,
EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS,
DataSize,
&TcgPpData
);
if (EFI_ERROR (Status)) {
DEBUG ((EFI_D_ERROR, "[TPM] Set physical presence variable failed, Status = %r\n", Status));
return;
}
ASSERT_EFI_ERROR (Status);
}
DEBUG ((EFI_D_INFO, "[TPM] Flags=%x, PPRequest=%x\n", PpiFlags, TcgPpData.PPRequest));