| How to Update U-Boot on Warp board |
| ---------------------------------- |
| Required software on the host PC: |
| - imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader |
| - dfu-util: http://dfu-util.sourceforge.net/releases/ |
| This will generate the U-Boot binary called u-boot.imx. |
| Put warp board in USB download mode |
| Connect a USB to serial adapter between the host PC and warp |
| Connect a USB cable between the OTG warp port and the host PC |
| Open a terminal program such as minicom |
| Copy u-boot.imx to the imx_usb_loader folder. |
| $ sudo ./imx_usb u-boot.imx |
| Then U-Boot should start and its messages will appear in the console program. |
| Use the default environment variables: |
| Transfer u-boot.imx that will be flashed into the eMMC: |
| $ sudo dfu-util -D u-boot.imx -a boot |
| Then on the U-Boot prompt the following message should be seen after a |
| Remove power from the warp board. |
| Put warp board into normal boot mode |
| Power up the board and the new updated U-Boot should boot from eMMC |