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- How to Update U-Boot on Warp7 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/ (if you are in a
- Debian distribution then you can get it via libdfu-dev package)
- - libusb: http://libusb.org/ (if you are in a Debian distribution
- then you can get it via libusb-dev and libusb-1.0-0-dev)
- In U-Boot folder, build U-Boot for Warp7:
- $ make mrproper
- $ make warp7_config
- $ make
- This will generate the U-Boot binary called u-boot.imx.
- Put warp7 board in USB download mode:
- Remove the CPU board from the base board then put switch 2 in the upper
- position
- Connect a USB to serial adapter between the host PC and warp7
- Connect a USB cable between the OTG warp7 port and the host PC
- Copy u-boot.imx to the imx_usb_loader folder.
- Load u-boot.imx via USB:
- $ sudo ./imx_usb u-boot.imx
- Then U-Boot should start and its messages will appear in the console program.
- Open a terminal program such as minicom
- Use the default environment variables:
- => env default -f -a
- => saveenv
- Run the DFU command:
- => dfu 0 mmc 0
- 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
- successful upgrade:
- #DOWNLOAD ... OK
- Ctrl+C to exit ...
- Remove power from the warp7 board.
- Put warp7 board into normal boot mode (put the switch 2 in the lower position)
- Power up the board and the new updated U-Boot should boot from eMMC
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