u-boot

History

Tom Rini 148b8bb4b6 imx: Finish migration of IMX_CONFIG to Kconfig - Provide a default Kconfig value of the default script - Largely continue to define this via the board Kconfig file - For the boards that select a script based on defconfig rather than TARGET, keep this within the defconfig. Signed-off-by: Tom Rini <trini@konsulko.com>		2021-08-31 17:46:37 -04:00
..
imximage.cfg	warp: Use the correct symbol for CONFIG_IMX_HAB	2021-08-09 14:46:50 +02:00
Kconfig	imx: Finish migration of IMX_CONFIG to Kconfig	2021-08-31 17:46:37 -04:00
MAINTAINERS
Makefile	SPDX: Convert all of our single license tags to Linux Kernel style	2018-05-07 09:34:12 -04:00
README	Use correct spelling of "U-Boot"	2016-02-06 12:00:59 +01:00
warp.c	board: warp: add power_max77696_init() function	2021-04-12 14:24:33 -04:00

README

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
=> 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 warp board.

Put warp board into normal boot mode

Power up the board and the new updated U-Boot should boot from eMMC