u-boot

mirror of https://github.com/AsahiLinux/u-boot synced 2024-12-22 11:13:07 +00:00

History

Simon Glass 5c86a8f7a1 imx: Don't define __ASSEMBLY__ in source files This is supposed to be a build-system flag. Move it there so we can define it before linux/kconfig.h is included. Signed-off-by: Simon Glass <sjg@chromium.org>		2022-02-08 23:07:58 -05:00
..
imximage.cfg	imx: Don't define __ASSEMBLY__ in source files	2022-02-08 23:07:58 -05:00
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
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