[U-Boot] [PATCH v2] warp: Add a README file

[Otavio Salvador]

On Mon, Mar 2, 2015 at 12:57 PM, Fabio Estevam
<fabio.estevam at freescale.com> wrote:
> Provide instructions on how to upgrade U-boot in the eMMC.
>
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---
> Changes since v1:
> - Use Boundary Device's tree for imx_usb_loader
> - Pass u-boot.imx as an argument of imx_usb
>
>  board/warp/README | 56 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
>  create mode 100644 board/warp/README
>
> diff --git a/board/warp/README b/board/warp/README
> new file mode 100644
> index 0000000..d315140
> --- /dev/null
> +++ b/board/warp/README
> @@ -0,0 +1,56 @@
> +How to Update U-boot on Warp 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 Warp:
> +
> +$ make mrproper
> +$ make warp_config
> +$ make
> +
> +This will generate the U-boot binary called u-boot.imx.
> +
> +Put warp board in USB download mode
> +
> +Connect a USB to serial adapter between the host PC and warp
> +
> +Connect a USB cable between the OTG warp 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
> +=> save

Isn't the new binary overwriting it?

> +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 succesful
> +upgrade:
> +
> +#DOWNLOAD ... OK
> +Ctrl+C to exit ...
> +
> +Remove power from the warp board.
> +
> +Put warp board into normal boot mode
> +
> +Power up the board and the new updated U-boot should boot from eMMC
> --
> 1.9.1
>



-- 
Otavio Salvador                             O.S. Systems
http://www.ossystems.com.br        http://code.ossystems.com.br
Mobile: +55 (53) 9981-7854            Mobile: +1 (347) 903-9750