vboot TPM stub functions return error codes

firmware/include/tss_constants.h

 /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  *
  * Some TPM constants and type definitions for standalone compilation for use in
  * the firmware
  */
 
 #ifndef VBOOT_REFERENCE_TSS_CONSTANTS_H_
 #define VBOOT_REFERENCE_TSS_CONSTANTS_H_
 
 #include "sysincludes.h"
 
 #define TPM_MAX_COMMAND_SIZE 4096
 #define TPM_LARGE_ENOUGH_COMMAND_SIZE 256  /* saves space in the firmware */
 #define TPM_PUBEK_SIZE 256
 
 #define TPM_E_NON_FATAL 0x800
 
 #define TPM_SUCCESS ((uint32_t)0x00000000)
 
 #define TPM_E_AREA_LOCKED           ((uint32_t)0x0000003c)
 #define TPM_E_BADINDEX              ((uint32_t)0x00000002)
 #define TPM_E_BAD_PRESENCE          ((uint32_t)0x0000002d)
+#define TPM_E_IOERROR               ((uint32_t)0x0000001f)
 #define TPM_E_INVALID_POSTINIT      ((uint32_t)0x00000026)
 #define TPM_E_MAXNVWRITES           ((uint32_t)0x00000048)
 #define TPM_E_OWNER_SET             ((uint32_t)0x00000014)
 
 #define TPM_E_NEEDS_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 1))
 #define TPM_E_DOING_SELFTEST ((uint32_t)(TPM_E_NON_FATAL + 2))
 
 #define TPM_E_ALREADY_INITIALIZED    ((uint32_t)0x00005000)  /* vboot local */
 #define TPM_E_INTERNAL_INCONSISTENCY ((uint32_t)0x00005001)  /* vboot local */
 #define TPM_E_MUST_REBOOT            ((uint32_t)0x00005002)  /* vboot local */
@@ skipping 46 matching lines @@
 typedef struct tdTPM_STCLEAR_FLAGS{
   TPM_STRUCTURE_TAG tag;
   TSS_BOOL deactivated;
   TSS_BOOL disableForceClear;
   TSS_BOOL physicalPresence;
   TSS_BOOL physicalPresenceLock;
   TSS_BOOL bGlobalLock;
 } TPM_STCLEAR_FLAGS;
 
 #endif  /* VBOOT_REFERENCE_TSS_CONSTANTS_H_ */