Add security package to repository.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12261 6f19259b-4bc3-4df7-8a09-765794883524
2011-09-02 07:49:32 +00:00
parent 986d1dfb08
commit 0c18794ea4
102 changed files with 38487 additions and 0 deletions
--- a/SecurityPkg/Tcg/TcgDxe/TpmComm.c
+++ b/SecurityPkg/Tcg/TcgDxe/TpmComm.c
@@ -0,0 +1,163 @@
+/** @file  
+  Utility functions used by TPM Dxe driver.
+
+Copyright (c) 2005 - 2010, 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 
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, 
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#include <IndustryStandard/Tpm12.h>
+#include <IndustryStandard/UefiTcgPlatform.h>
+#include <Library/TpmCommLib.h>
+#include <Library/BaseMemoryLib.h>
+
+#include "TpmComm.h"
+
+/**
+  Extend a TPM PCR.
+
+  @param[in]  TpmHandle       TPM handle.  
+  @param[in]  DigestToExtend  The 160 bit value representing the event to be recorded.  
+  @param[in]  PcrIndex        The PCR to be updated.
+  @param[out] NewPcrValue     New PCR value after extend.  
+  
+  @retval EFI_SUCCESS         Operation completed successfully.
+  @retval EFI_DEVICE_ERROR    The command was unsuccessful.
+
+**/
+EFI_STATUS
+TpmCommExtend (
+  IN      TIS_TPM_HANDLE            TpmHandle,
+  IN      TPM_DIGEST                *DigestToExtend,
+  IN      TPM_PCRINDEX              PcrIndex,
+     OUT  TPM_DIGEST                *NewPcrValue
+  )
+{
+  EFI_STATUS                        Status;
+  TPM_DIGEST                        NewValue;
+  TPM_RQU_COMMAND_HDR               CmdHdr;
+  TPM_RSP_COMMAND_HDR               RspHdr;
+
+  if (NewPcrValue == NULL) {
+    NewPcrValue = &NewValue;
+  }
+
+  CmdHdr.tag = TPM_TAG_RQU_COMMAND;
+  CmdHdr.paramSize =
+    sizeof (CmdHdr) + sizeof (PcrIndex) + sizeof (*DigestToExtend);
+  CmdHdr.ordinal = TPM_ORD_Extend;
+  Status = TisPcExecute (
+             TpmHandle,
+             "%h%d%r%/%h%r",
+             &CmdHdr,
+             PcrIndex,
+             DigestToExtend,
+             (UINTN)sizeof (*DigestToExtend),
+             &RspHdr,
+             NewPcrValue,
+             (UINTN)sizeof (*NewPcrValue)
+             );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+  if (RspHdr.returnCode != 0) {
+    return EFI_DEVICE_ERROR;
+  }
+  return EFI_SUCCESS;
+}
+
+/**
+  Get TPM capability flags.
+
+  @param[in]  TpmHandle    TPM handle.  
+  @param[in]  FlagSubcap   Flag subcap.  
+  @param[out] FlagBuffer   Pointer to the buffer for returned flag structure.
+  @param[in]  FlagSize     Size of the buffer.  
+  
+  @retval EFI_SUCCESS      Operation completed successfully.
+  @retval EFI_DEVICE_ERROR The command was unsuccessful.
+
+**/
+EFI_STATUS
+TpmCommGetFlags (
+  IN      TIS_TPM_HANDLE            TpmHandle,
+  IN      UINT32                    FlagSubcap,
+     OUT  VOID                      *FlagBuffer,
+  IN      UINTN                     FlagSize
+  )
+{
+  EFI_STATUS                        Status;
+  TPM_RQU_COMMAND_HDR               CmdHdr;
+  TPM_RSP_COMMAND_HDR               RspHdr;
+  UINT32                            Size;
+
+  CmdHdr.tag = TPM_TAG_RQU_COMMAND;
+  CmdHdr.paramSize = sizeof (CmdHdr) + sizeof (UINT32) * 3;
+  CmdHdr.ordinal = TPM_ORD_GetCapability;
+
+  Status = TisPcExecute (
+             TpmHandle,
+             "%h%d%d%d%/%h%d%r",
+             &CmdHdr,
+             TPM_CAP_FLAG,
+             sizeof (FlagSubcap),
+             FlagSubcap,
+             &RspHdr,
+             &Size,
+             FlagBuffer,
+             FlagSize
+             );
+  if (EFI_ERROR (Status)) {
+    return Status;
+  }
+  if (RspHdr.returnCode != 0) {
+    return EFI_DEVICE_ERROR;
+  }
+  return EFI_SUCCESS;
+}
+
+/**
+  Add a new entry to the Event Log.
+
+  @param[in, out] EventLogPtr   Pointer to the Event Log data.  
+  @param[in, out] LogSize       Size of the Event Log.  
+  @param[in]      MaxSize       Maximum size of the Event Log.
+  @param[in]      NewEventHdr   Pointer to a TCG_PCR_EVENT_HDR data structure.  
+  @param[in]      NewEventData  Pointer to the new event data.  
+  
+  @retval EFI_SUCCESS           The new event log entry was added.
+  @retval EFI_OUT_OF_RESOURCES  No enough memory to log the new event.
+
+**/
+EFI_STATUS
+TpmCommLogEvent (
+  IN OUT  UINT8                     **EventLogPtr,
+  IN OUT  UINTN                     *LogSize,
+  IN      UINTN                     MaxSize,
+  IN      TCG_PCR_EVENT_HDR         *NewEventHdr,
+  IN      UINT8                     *NewEventData
+  )
+{
+  UINT32                            NewLogSize;
+
+  NewLogSize = sizeof (*NewEventHdr) + NewEventHdr->EventSize;
+  if (NewLogSize + *LogSize > MaxSize) {
+    return EFI_OUT_OF_RESOURCES;
+  }
+
+  *EventLogPtr += *LogSize;
+  *LogSize += NewLogSize;
+  CopyMem (*EventLogPtr, NewEventHdr, sizeof (*NewEventHdr));
+  CopyMem (
+    *EventLogPtr + sizeof (*NewEventHdr),
+    NewEventData,
+    NewEventHdr->EventSize
+    );
+  return EFI_SUCCESS;
+}