[U-Boot] U-boot failed

[Marek Vasut]

Dear Zeyad A,

> Dear Mark,
> Yeah sure, I'll do the CC and what you mean by 'fix the quote in my
> mailer'??

When you reply on an email, you usually get the old email you reply to prefixed 
with these ">" (quotes). And I guess your mailed doesn't do that.

> If my u-boot is broken then what will I do?

If it was mainline, you'd simply report a problem and possibly send a patch. If 
it's a vendor-supplied u-boot, that's problematic. Do you have the sources?

> Sorry, I am a little
> weak in this linux things.

That's ok.

> So please just help to do it..
> Here I am attaching a screen shot of the kernel loading process. After the
> end there is no response in the terminal, only just blinking the cursor. No
> kernel startup and all...

I see! So the kernel started the decompressor at least. Now, check the 
following:

In U-Boot, run "printenv bootargs" and see if you pass correct serial port to 
the kernel (argument "console=<something>"). This is what I can think of from 
the top of my head. You can adjust it by running "setenv bootargs", then boot as 
usual. This new bootargs won't be saved, so powercycling the board will get you 
back to previous state, no damage done. Once you figure out the correct 
bootargs, run "saveenv" afterwards.

> On Fri, Jun 8, 2012 at 6:42 AM, Marek Vasut <marex at denx.de> wrote:
> > Dear Zeyad A,
> > 
> > Ok, let's first adjust your posting so it's easier for everyone around to
> > read
> > and reply. Firstly please, always CC the u-boot mailing list. Secondly,
> > fix the
> > quoting in your mailer please.
> > 
> > > Thank you very much for your reply. Please read the my answers below..
> > > 
> > > On Wed, Jun 6, 2012 at 1:52 AM, Marek Vasut <marex at denx.de> wrote:
> > > > Dear Zeyad A,
> > > > 
> > > > > Hello,
> > > > > 
> > > > > Please help me to configure u-boot in my NC600 board.
> > > > 
> > > > What's this board? Is it supported mainline? What CPU does it have,
> > 
> > what
> > 
> > > > version
> > > > of uboot etc?
> > > > 
> > > > 
> > > > 
> > > > My board is the thin-client NC600 board with POLLUX loaded(same as
> > > > the device in this link:
> > > > https://code.jeffkent.net/trac/nc600/wiki/Hardware/Devices/NC600#no1)
> > > > .
> > 
> > It
> > 
> > > > has 64 MB of ram and 64 MB of storage space. I had followed the
> > 
> > writings
> > 
> > > > in this link: https://code.jeffkent.net/trac/nc600
> > 
> > I don't see this being supported by mainline u-boot, right? So what
> > version does
> > your board run? It might be that the u-boot you run is broken too.
> > 
> > > > > I have reached near
> > > > > to u-boot, but the kernel is not booting. After the kernel image
> > 
> > upload
> > 
> > > > via
> > > > 
> > > > > serial boot mode it is giving no response.
> > > > 
> > > > Kernel or uboot? Maybe your xyzmodem uploader doesn't work with
> > > > uboot? Minicom
> > > > worked for me.
> > > > 
> > > > 
> > > > 
> > > > I have done all these in ubuntu 11.04 as per the link. In the
> > > > terminal
> > 
> > in
> > 
> > > > ubuntu, i can start the u-boot by ./boot-uboot command and my FTDI
> > 
> > serial
> > 
> > > > communicator is working fine. All the things are sending to the board
> > 
> > and
> > 
> > > > it is entering to u-boot. The commands are working fine in u-boot.
> > 
> > Ok, so you have u-boot running and it's the kernel that doesn't boot?
> > What is
> > the last think you see?
> > 
> > > > > If the kernel image upload
> > > > > become complete it is not giving any command line in the u-boot as
> > > > > shown
> > > > 
> > > > in
> > > > 
> > > > > the guide.
> > > > 
> > > > I see ... what terminal emulator do you use to communicate with
> > > > uboot? btw. uploading via tftp over the ethernet is usually much
> > > > faster.
> > > > 
> > > > 
> > > > 
> > > > I am using ubuntu terminal and it's working good. I tried both tftp
> > > > upload and direct flash memory upload by plugging the flash in my
> > > > board's usb port. But in tftp upload the kernel image upload was
> > > > successful. The led indicator in the board is blinking at the time of
> > > > kernel upload.  But after upload, there is not getting any response
> > > > in the terminal. I can't do any commands in the terminal.
> > > > 
> > > > > The memory is not getting flashed.
> > > > 
> > > > Why of course, the loady command downloads data to RAM, you have to
> > 
> > flash
> > 
> > > > it via
> > > > "nand write" or such command afterwards.
> > > > 
> > > > 
> > > > 
> > > > Yes the data is uploading to RAM. After that i can't do any commands.
> > > > This the only problem i have...
> > 
> > Ok, so you're uploading it to RAM, are you sure you don't overwrite
> > u-boot? Check where u-boot is located (run bdinfo) and avoid that
> > location.
> > 
> > > > > It is again booting the same
> > > > > old windows CE in the nand boot mode.
> > > > > 
> > > > > Thanking you,
> > > > > Regards
> > > > 
> > > > Best regards,
> > > > Marek Vasut
> > > 
> > > Thanking you
> > 
> > Best regards,
> > Marek Vasut

Best regards,
Marek Vasut