[BPI-R2] U-boot button usage

Banana Pi Router design BPI-R2(MT7623N)
1

Hello!

How can I use this u-boot button exactly?

B.r.:Norbert

2 Likes
2

Hello,

did someone find an answer to this question? I guess the two other buttons can be programmed, but is the U-Boot button somehow wiered to be used with U-Boot or not used yet?

Regards,

GĂźnter

3

hi dsp

May I know what uboot button is ?

Thanks Gary

4

Hi Gary,

on the Banana PI web page under Hardware there is an image:

http://www.banana-pi.org/r2.html#others

On the top side it shows at the top right the three push buttons and it says that two buttons are GPIO and the third one is called “Uboot”.

Regards,

GĂźnter

5

Really nice of you to point out that that the label says “Uboot”. That is a very clear statement that the button is clearly labeled Uboot. I would be great if you could read what was asked.

The question was, what does it do. not how is the Uboot button labeled

6

On this platform, I can never find any question that is answered the way it is asked. It is almost as if those who know anything about the answer enjoys bringing as much extra disappointment and frustration as they can bring to the user who’s asking the question. Show me one question on this platform that is answered!

7

I answer much questions as far as i can. I’m no employee of bpi or mtk. I do all in my spare time.

but in one point i ack your opinion…there is nearly no official support on the questions.

For the buttons (like uboot) there is no documentation. I have only this: https://drive.google.com/file/d/0B4PAo2nW2KfnbVZzeDJERGd2SDg/view

On page 20 there is a switch ‘boot mode’ but i don’t know if this is the uboot-button or how it is acessed by software…

1 Like
8

Some boards feature a “FEL” or “U-Boot” button, which forces FEL mode despite a valid boot location being present. The same can be achieved via a magic binary on an SD card, which allows to enter FEL mode on any board.

To use FEL booting, let the board enter FEL mode, via any of the mentioned methods (no boot media, FEL button, SD card with FEL binary), then connect a USB cable to the board’s USB OTG port. Some boards (Pine64, TV boxes) don’t have a separate OTG port. In this case mostly one of the USB-A ports is connected to USB0, and can be used via a non-standard USB-A to USB-A cable.

Typically there is no on-board indication of FEL mode, other than a new USB device appearing on the connected host computer. The USB vendor/device ID is 1f3a:efe8. Mostly this will identify as “sunxi SoC OTG connector in FEL/flashing mode”, but older distributions might still report “Onda (unverified) V972 tablet in flashing mode”.

From: u-boot/doc/board/allwinner/sunxi.rst at master ¡ u-boot/u-boot ¡ GitHub