172a868f1SMarco FranchiHow to Update U-Boot on Warp7 board 272a868f1SMarco Franchi---------------------------------- 372a868f1SMarco Franchi 472a868f1SMarco FranchiRequired software on the host PC: 572a868f1SMarco Franchi 672a868f1SMarco Franchi- imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader 772a868f1SMarco Franchi 872a868f1SMarco Franchi- dfu-util: http://dfu-util.sourceforge.net/releases/ (if you are in a 972a868f1SMarco FranchiDebian distribution then you can get it via libdfu-dev package) 1072a868f1SMarco Franchi 1172a868f1SMarco Franchi- libusb: http://libusb.org/ (if you are in a Debian distribution 1272a868f1SMarco Franchithen you can get it via libusb-dev and libusb-1.0-0-dev) 1372a868f1SMarco Franchi 1472a868f1SMarco FranchiIn U-Boot folder, build U-Boot for Warp7: 1572a868f1SMarco Franchi 1672a868f1SMarco Franchi$ make mrproper 1772a868f1SMarco Franchi$ make warp7_config 1872a868f1SMarco Franchi$ make 1972a868f1SMarco Franchi 20*4a2d09acSFabio EstevamThis will generate the U-Boot binary called u-boot-dtb.imx. 2172a868f1SMarco Franchi 2272a868f1SMarco FranchiPut warp7 board in USB download mode: 2372a868f1SMarco Franchi 2472a868f1SMarco FranchiRemove the CPU board from the base board then put switch 2 in the upper 2572a868f1SMarco Franchiposition 2672a868f1SMarco Franchi 2772a868f1SMarco FranchiConnect a USB to serial adapter between the host PC and warp7 2872a868f1SMarco Franchi 2972a868f1SMarco FranchiConnect a USB cable between the OTG warp7 port and the host PC 3072a868f1SMarco Franchi 31*4a2d09acSFabio EstevamCopy u-boot-dtb.imx to the imx_usb_loader folder. 3272a868f1SMarco Franchi 33*4a2d09acSFabio EstevamLoad u-boot-dtb.imx via USB: 3472a868f1SMarco Franchi 35*4a2d09acSFabio Estevam$ sudo ./imx_usb u-boot-dtb.imx 3672a868f1SMarco Franchi 3772a868f1SMarco FranchiThen U-Boot should start and its messages will appear in the console program. 3872a868f1SMarco Franchi 3972a868f1SMarco FranchiOpen a terminal program such as minicom 4072a868f1SMarco Franchi 4172a868f1SMarco FranchiUse the default environment variables: 4272a868f1SMarco Franchi 4372a868f1SMarco Franchi=> env default -f -a 4472a868f1SMarco Franchi=> saveenv 4572a868f1SMarco Franchi 4672a868f1SMarco FranchiRun the DFU command: 4772a868f1SMarco Franchi=> dfu 0 mmc 0 4872a868f1SMarco Franchi 49*4a2d09acSFabio EstevamTransfer u-boot-dtb.imx that will be flashed into the eMMC: 5072a868f1SMarco Franchi 51*4a2d09acSFabio Estevam$ sudo dfu-util -D u-boot-dtb.imx -a boot 5272a868f1SMarco Franchi 5372a868f1SMarco FranchiThen on the U-Boot prompt the following message should be seen after a 5472a868f1SMarco Franchisuccessful upgrade: 5572a868f1SMarco Franchi 5672a868f1SMarco Franchi#DOWNLOAD ... OK 5772a868f1SMarco FranchiCtrl+C to exit ... 5872a868f1SMarco Franchi 5972a868f1SMarco FranchiRemove power from the warp7 board. 6072a868f1SMarco Franchi 6172a868f1SMarco FranchiPut warp7 board into normal boot mode (put the switch 2 in the lower position) 6272a868f1SMarco Franchi 6372a868f1SMarco FranchiPower up the board and the new updated U-Boot should boot from eMMC 64