Add crossystem support for nvram_cleared and kern_nv

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 25 matching lines @@
   {"tried_fwb", 0, 0, "Tried firmware B before A this boot"},
   /* Read-only strings */
   {"hwid", 1, 0, "Hardware ID"},
   {"fwid", 1, 0, "Active firmware ID"},
   {"ro_fwid", 1, 0, "Read-only firmware ID"},
   {"mainfw_act", 1, 0, "Active main firmware"},
   {"mainfw_type", 1, 0, "Active main firmware type"},
   {"ecfw_act", 1, 0, "Active EC firmware"},
   {"kernkey_vfy", 1, 0, "Type of verification done on kernel key block"},
   /* Writable integers */
+  {"nvram_cleared", 0, 1, "Have NV settings been lost?  Write 0 to clear"},
+  {"kern_nv", 0, 1, "Non-volatile field for kernel use", "0x%08x"},
   {"recovery_request", 0, 1, "Recovery mode request (writable)"},
   {"dbg_reset", 0, 1, "Debug reset mode request (writable)"},
   {"fwb_tries", 0, 1, "Try firmware B count (writable)"},
-  {"kern_nv", 0, 1, "Non-volatile field for kernel use", "0x%08x"},
 
   /* TODO: implement the following:
    *   nvram_cleared
    */
 
   /* Terminate with null name */
   {NULL, 0, 0, NULL}
 };
 
 
@@ skipping 129 matching lines @@
     if (i > 1)
       printf(" ");  /* Output params space-delimited */
     if (value)
       retval = SetParam(p, value);
     else
       retval = PrintParam(p);
   }
 
   return retval;
 }