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Diffstat (limited to 'board/technexion')
| -rw-r--r-- | board/technexion/pico-imx6ul/README | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/board/technexion/pico-imx6ul/README b/board/technexion/pico-imx6ul/README new file mode 100644 index 0000000000..2f66095097 --- /dev/null +++ b/board/technexion/pico-imx6ul/README @@ -0,0 +1,57 @@ +How to Update U-Boot on Pico-imx6ul 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/ + +Build U-Boot for Pico: + +$ make mrproper +$ make pico-imx6ul_defconfig +$ make + +This will generate the U-Boot binary called u-boot.imx. + +Put pico board in USB download mode (refer to the document +http://www.wandboard.org/images/hobbit/hobbitboard-imx6ul-reva1.pdf page 15) + +Connect a USB to serial adapter between the host PC and pico + +Connect a USB cable between the OTG pico port and the host PC + +Open a terminal program such as minicom + +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. + +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 pico board. + +Put pico board into normal boot mode + +Power up the board and the new updated U-Boot should boot from eMMC. |