In fact I tried each of the branches ; mainline ; Stephen Warren and also Olex's branch. Olex branch seems to have USB support but it does not work for me . I get a different error now .

Saying the "Unrecognized filesystem type **"

https://www.dropbox.com/s/n987ko6fxajco7p/P_20151125_182109.jpg?dl=0

Any clues how to go about fixing this ?

From: Sumeet Jauhar Sent: Wednesday, 25 November, 2015 4:56 PM To: 'u-boot@lists.denx.de' Subject: Rpi Uboot not working ; USB keyboard undetected

Hello All,

I am new to Rpi and for a project I need to install Uboot for Rpi. For starters I installed Raspbian-jessie to the pi and it worked fine. Now I am attempting to use uboot but I don't succeed. I am trying to follow the instructions http://elinux.org/RPi_U-Boot and http://arrizza.org/wiki/index.php/RPI_U-boot . Here is what i have done so far.

1) Downloaded and compiled the code from "Stephen Warren's work-in-progress branch" (and also from the mainline when the former did not work). I used a Debian box to compile and and used CROSS_COMPILE=arm-linux-gnueabi- . I am able to successfully build uboot.bin

2) Now I copy uboot.bin to the SD card. I replace the config.txt to have a line kernel=uboot.bin . ( I also tried to replace the kernel.bin directly as uboot.bin)

Now when I boot the pi I stop at the uboot prompt but my USB keyboard and USB mouse are not recognized . I can't do anything ! How do I communicate with the pi ??

My question seems similar to https://www.raspberrypi.org/forums/viewtopic.php?f=28&t=104383 but I see no fix for the problem.

I am attaching an image of the bootup so maybe you guys can point the error ..

https://www.dropbox.com/s/dn4njagoes5f7 ... R.jpg?dl=0https://www.dropbox.com/s/dn4njagoes5f7ll/P_20151124_204301_HDR.jpg?dl=0 Regards