mirror of
https://github.com/brain-hackers/u-boot-brain
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938076efa9
Register LDOGCTL contains only bit 0 as a valid bit, so there is no need to do a read-modify-write operation. Simplify the code by writing directly to this register. Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com> |
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| .. | ||
| imximage.cfg | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| pico-imx6ul.c | ||
| README | ||
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.