README
1How to Update U-Boot on Warp board
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4Required software on the host PC:
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6- imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader
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8- dfu-util: http://dfu-util.sourceforge.net/releases/
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10Build U-Boot for Warp:
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12$ make mrproper
13$ make warp_config
14$ make
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16This will generate the U-Boot binary called u-boot.imx.
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18Put warp board in USB download mode
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20Connect a USB to serial adapter between the host PC and warp
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22Connect a USB cable between the OTG warp port and the host PC
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24Open a terminal program such as minicom
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26Copy u-boot.imx to the imx_usb_loader folder.
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28Load u-boot.imx via USB:
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30$ sudo ./imx_usb u-boot.imx
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32Then U-Boot should start and its messages will appear in the console program.
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34Use the default environment variables:
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36=> env default -f -a
37=> saveenv
38
39Run the DFU command:
40=> dfu 0 mmc 0
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42Transfer u-boot.imx that will be flashed into the eMMC:
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44$ sudo dfu-util -D u-boot.imx -a boot
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46Then on the U-Boot prompt the following message should be seen after a
47successful upgrade:
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49#DOWNLOAD ... OK
50Ctrl+C to exit ...
51
52Remove power from the warp board.
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54Put warp board into normal boot mode
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56Power up the board and the new updated U-Boot should boot from eMMC
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