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u-boot/board/warp
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Peng Fan f34ccce50a mmc: fsl_esdhc: drop CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT 
CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT is not the correct method
to set I/O to 1.8. To boards that does not support vqmmc-supply,
use vs18_enable in fsl_esdhc_cfg. If regulator is supported,
use fixed 1.8V regulator for vqmmc-supply.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: York Sun <york.sun@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
2017-07-12 09:44:22 +02:00
..
imximage.cfg imx: s/docs\/README.imximage/doc\/README.imximage/g 2016-10-26 16:53:16 +02:00
Kconfig mx6: remove SYS_SOC from board Kconfig 2015-09-13 10:37:29 +02:00
MAINTAINERS warp: Add initial WaRP Board support 2015-02-23 09:11:44 +01:00
Makefile warp: Add initial WaRP Board support 2015-02-23 09:11:44 +01:00
README Use correct spelling of "U-Boot" 2016-02-06 12:00:59 +01:00
warp.c mmc: fsl_esdhc: drop CONFIG_SYS_FSL_ESDHC_FORCE_VSELECT 2017-07-12 09:44:22 +02:00

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