1 How to Update U-Boot on Warp7 board
2 ----------------------------------
4 Required software on the host PC:
6 - imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader
8 - dfu-util: http://dfu-util.sourceforge.net/releases/ (if you are in a
9 Debian distribution then you can get it via libdfu-dev package)
11 - libusb: http://libusb.org/ (if you are in a Debian distribution
12 then you can get it via libusb-dev and libusb-1.0-0-dev)
14 In U-Boot folder, build U-Boot for Warp7:
20 This will generate the U-Boot binary called u-boot-dtb.imx.
22 Put warp7 board in USB download mode:
24 Remove the CPU board from the base board then put switch 2 in the upper
27 Connect a USB to serial adapter between the host PC and warp7
29 Connect a USB cable between the OTG warp7 port and the host PC
31 Copy u-boot-dtb.imx to the imx_usb_loader folder.
33 Load u-boot-dtb.imx via USB:
35 $ sudo ./imx_usb u-boot-dtb.imx
37 Then U-Boot should start and its messages will appear in the console program.
39 Open a terminal program such as minicom
41 Use the default environment variables:
49 Transfer u-boot-dtb.imx that will be flashed into the eMMC:
51 $ sudo dfu-util -D u-boot-dtb.imx -a boot
53 Then on the U-Boot prompt the following message should be seen after a
59 Remove power from the warp7 board.
61 Put warp7 board into normal boot mode (put the switch 2 in the lower position)
63 Power up the board and the new updated U-Boot should boot from eMMC