added reboot return codes to load kernel and firmware

firmware/lib/rollback_index.c

 /* 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.
  *
  * Functions for querying, manipulating and locking rollback indices
  * stored in the TPM NVRAM.
  */
 
 #include "rollback_index.h"
 
 #include "tlcl.h"
 #include "tss_constants.h"
 #include "utility.h"
 
 static int g_rollback_recovery_mode = 0;
 
 /* disable MSVC warning on const logical expression (as in } while(0);) */
 __pragma(warning (disable: 4127))
 
 #define RETURN_ON_FAILURE(tpm_command) do {             \
     uint32_t result;                                    \
     if ((result = (tpm_command)) != TPM_SUCCESS) {      \
+      VBDEBUG(("Rollback: %08x returned by " #tpm_command "\n", (int)result)); \
       return result;                                    \
     }                                                   \
   } while (0)
 
 uint32_t TPMClearAndReenable(void) {
   RETURN_ON_FAILURE(TlclForceClear());
   RETURN_ON_FAILURE(TlclSetEnable());
   RETURN_ON_FAILURE(TlclSetDeactivated(0));
   return TPM_SUCCESS;
 }
@@ skipping 309 matching lines @@
   return TPM_SUCCESS;
 }
 
 uint32_t RollbackKernelLock(void) {
   if (!g_rollback_recovery_mode) {
     return TlclLockPhysicalPresence();
   } else {
     return TPM_SUCCESS;
   }
 }