grub: cpuid

 
 16.3.17 cpuid
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  -- Command: cpuid [-l] [-p]
      Check for CPU features.  This command is only available on x86
      systems.
 
      With the '-l' option, return true if the CPU supports long mode
      (64-bit).
 
      With the '-p' option, return true if the CPU supports Physical
      Address Extension (PAE).
 
      If invoked without options, this command currently behaves as if it
      had been invoked with '-l'.  This may change in the future.