1stdin=serial,button-kbd 2stdout=serial,vidconsole 3stderr=serial,vidconsole 4preboot=scsi scan; usb start 5fastboot=fastboot -l $fastboot_addr_r usb 0 6do_boot=bootefi bootmgr 7bootmenu_0=Boot first available device=run do_boot 8bootmenu_1=Enable fastboot mode=run fastboot 9bootmenu_2=Reset device=reset 10menucmd=bootmenu 11bootcmd=run do_boot 12