docs: def tftp_update_bios(server=None, path=None):
      '''
      Update the BIOS firmware through TFTP.
  
      Args:
          server(str): The IP address or hostname of the TFTP server.
  
          path(str): The TFTP path and filename for the BIOS image.
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' cimc.tftp_update_bios foo.bar.com HP-SL2.cap
  
      '''
  
      if not server:
          raise salt.exceptions.CommandExecutionError("The server name must be specified.")
  
      if not path:
          raise salt.exceptions.CommandExecutionError("The TFTP path must be specified.")
  
      dn = "sys/rack-unit-1/bios/fw-updatable"
  
      inconfig = """<firmwareUpdatable adminState='trigger' dn='sys/rack-unit-1/bios/fw-updatable'
      protocol='tftp' remoteServer='{0}' remotePath='{1}'
      type='blade-bios' />""".format(server, path)
  
      ret = __proxy__['cimc.set_config_modify'](dn, inconfig, False)
  
      return ret