defenv
setenv bootfromrecovery 0
setenv bootfromnand 0
setenv upgrade_step 2
setenv start_autoscript 'if mmcinfo; then run start_mmc_autoscript; fi; if usb start; then run start_usb_autoscript; fi;'
setenv start_mmc_autoscript 'if fatload mmc 0 1020000 s905_autoscript; then autoscr 1020000; fi;'
setenv start_usb_autoscript 'if fatload usb 0 1020000 s905_autoscript; then autoscr 1020000; fi; if fatload usb 1 1020000 s905_autoscript; then autoscr 1020000; fi; if fatload usb 2 1020000 s905_autoscript; then autoscr 1020000; fi; if fatload usb 3 1020000 s905_autoscript; then autoscr 1020000; fi;'
setenv sddtb 'if fatload mmc 0 ${dtb_mem_addr} dtb.img; then echo sd dtb.img loaded; else store dtb read $dtb_mem_addr; fi'
setenv usbdtb 'if fatload usb 0 ${dtb_mem_addr} dtb.img; then echo usb dtb.img loaded; else store dtb read $dtb_mem_addr; fi'
setenv librefromsd 'if mmcinfo; then if fatload mmc 0 ${loadaddr} kernel.img; then run sddtb; setenv bootargs ${bootargs} bootfromsd; bootm; fi; fi'
setenv librefromusb 'if usb start 0; then if fatload usb 0 ${loadaddr} kernel.img; then run usbdtb; setenv bootargs ${bootargs} bootfromusb; bootm; fi; fi'
setenv bootcmd 'if test ${bootfromnand} = 1; then setenv bootfromnand 0; saveenv; else run start_autoscript; run librefromsd; run librefromusb; fi; run storeboot'
saveenv
run storeargs
run librefromsd
run librefromusb