Add crossystem fwupdate_tries and fix nv storage writes

utility/crossystem_main.c

 /* Copyright (c) 2011 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.
  *
  * Chrome OS firmware/system interface utility
  */
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
@@ skipping 44 matching lines @@
   {"mainfw_type", IS_STRING, "Active main firmware type"},
   {"ecfw_act", IS_STRING, "Active EC firmware"},
   {"kernkey_vfy", IS_STRING, "Type of verification done on kernel key block"},
   {"vdat_timers", IS_STRING, "Timer values from VbSharedData"},
   /* Writable integers */
   {"nvram_cleared", CAN_WRITE, "Have NV settings been lost?  Write 0 to clear"},
   {"kern_nv", CAN_WRITE, "Non-volatile field for kernel use", "0x%08x"},
   {"recovery_request", CAN_WRITE, "Recovery mode request (writable)"},
   {"dbg_reset", CAN_WRITE, "Debug reset mode request (writable)"},
   {"fwb_tries", CAN_WRITE, "Try firmware B count (writable)"},
+  {"fwupdate_tries", CAN_WRITE, "Times to try OS firmware update (writable)"},
   {"vbtest_errfunc", CAN_WRITE, "Verified boot test error function (writable)"},
   {"vbtest_errno", CAN_WRITE, "Verified boot test error number (writable)"},
   /* Fields not shown in a print-all list */
   {"vdat_lfdebug", IS_STRING|NO_PRINT_ALL,
    "LoadFirmware() debug data (not in print-all)"},
   {"vdat_lkdebug", IS_STRING|NO_PRINT_ALL,
    "LoadKernel() debug data (not in print-all)"},
   /* Terminate with null name */
   {NULL, 0, NULL}
 };
@@ skipping 181 matching lines @@
     if (has_set)
       retval = SetParam(p, value);
     else if (has_expect)
       retval = CheckParam(p, value);
     else
       retval = PrintParam(p);
   }
 
   return retval;
 }