u-boot/board/technexion/pico-imx7d/README
Vanessa Maegima 1541d7a63d pico-imx7d: Add initial support
Add the initial support for pico-imx7d board based on Wig Cheng's
source code.

Add support for eMMC, USB gadget, I2C, PMIC and Ethernet.

For more information about this board, please visit:
http://www.technexion.org/products/pico/pico-som/pico-imx7-emmc

Signed-off-by: Vanessa Maegima <vanessa.maegima@nxp.com>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
2017-05-31 09:58:40 +02:00

49 lines
1.1 KiB
Text

How to update U-Boot on pico-imx7d board
----------------------------------------
Required software on the host PC:
- imx_usb_loader: https://github.com/boundarydevices/imx_usb_loader
Build U-Boot for pico:
$ make mrproper
$ make pico-imx7d_defconfig
$ make
This generates the U-Boot binary called u-boot.imx.
Put pico board in USB download mode (refer to the PICO-iMX7D Quick Start Guide
page 3)
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 starts and its messages appear in the console program.
Use the default environment variables:
=> env default -f -a
=> saveenv
Run the UMS command:
=> ums 0 mmc 0
Transfer u-boot.imx to be flashed into the eMMC:
$ sudo dd if=u-boot.imx of=/dev/sdX bs=1K seek=1; sync
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.