Please clarify, are you programming a NAND flash or eMMC?

Thanks Biser.  It is NAND.  

I'm using a modded flasher.sh from the linux initram system to do the flashing.  While this isn't absolutely necessary, we are hoping to have this partly backgrounded and be able to do other board tests on the fixture while the NAND is programmed.

The programming itself is working ok. I just need to have it automated so there is no need for the uart commands.  As a hardware engineer I may be missing something from the tutorial that is obvious to fw guys.  The ideal solution for me is pre-compiled binaries of these files that allow me to do my timings etc.

regards, Peter 

Thanks for the clarification. I have asked the factory team to comment on this. They will post directly here.

Which SDK are you using?

Can you please provide the log of applying the scripts?

Thanks.

Thanks Ron.  The SDK is 2.00.00.00 (build 10072016)

I work through the document to get to U-Boot where you enter setenv ethact usb_ether and the following steps to boot the linux kernel and it works ok. 

It is the section after this where it is supposed to operate without intervention that I come unstuck.  The config file am335x_evm_usbspl_tftpbootusb_defconfig to build this U-Boot does not seem to exist.

A bit more information on our setup may help to clarify.
We have a custom board based on the Beaglebone Black but with 512MB of NAND replacing the on-board eMMC. It allows access to the UART0 pins during board testing but once assembled, the only available interface is USB0.
Th SYSBOOT pins are configured for a default boot order of NAND->NANDI2C->USB0 and an externally accessible switch changes this to USB0->NAND to lallow closed box upgrades.

The documents used to setup for the programming were: [1] 'processors.wiki.ti.com/.../Ubuntu_12.04_Set_Up_to_Network_Boot_an_AM335x_Based_Platform' for the networking and [2] 'processors.wiki.ti.com/.../Sitara_Linux_Program_the_eMMC_on_Beaglebone_Black' for the compiling and programming. The 'flasher.sh' script was modified to program the NAND using flash_erase, nandwrite and ubiformat and works reliably on both a dedicated Ubuntu 12.04 PC and on Win7 using Uniflash.
The problem I have is getting the section 'Modify U-Boot to Boot from TFTP Automatically' to work. We require this to allow a 'plug in USB, turn on power' type programming cycle of assembled units. Any method that achieves this is fine, it does not have to follow the procedure above. A previous project using an iMX processor, had a Freescale provided tool that allowed this for up to 16 connected units, and worked well in a production environment.

If it helps we can set up a Skype or conference call at a time suitable to you.

I'm not sure what logs to post, but I have a grab of the patch failure.

I manually pasted the patch info into am335x_evm.h and it built without errors, but still gave this output from u-boot.

If there is anything else that will help, let me know and I'll try to get it for you.

Environment is Ubuntu 12.04

Thanks, Peter

Peter,

Can you please post your patched am335x_evm.h?

Hi Ron,

I could not get the patch to run so I just copy/pasted into the file as attached.

Peteram335x_evm.h.tar.gz

Peter,

Thanks for posting the file. It prompted me to review the patch series and realize that I've missed a patch. I apologize.

Unfortunately, I'm traveling and can't get to the machine that has the patch until Monday of next week. As soon as I can, I will share the final patch and you should be up and running.

If this is really holding you back, you should be able to modify your bootcommand to include the instructions from the wiki.

Or, as I've said, I'll provide a proper patch next week and get you up and running. I've done this process many times on a beaglebone black and am confident we can get this working smoothly for you.

Thanks Ron, that is good news.  I will wait until you return from travelling.

Peter

Thanks for the files Ron.

They fixed the problem, it now goes all the way through without interruption.

Peter