[U-Boot-Users] autoboot in U-boot

[Wolfgang Denk]

Hello,

in message <1058522316.1188.104.camel at localhost.localdomain> you wrote:
> 
> > What do you get when you run the "printenv" command?
> this is what i get when i issue printenv
> 
> :>printenv
> 0A"
> $`
> $A
> .aB@
> stdgut=seri`l
> stdin=serial
> stdout=serial
> stderr=serial
> 
> Environment size: 71/262140 bytes

As you can see, the environment contains only garbage. So it is not a
big surprise that autoboot does not work  as  U-Boot  cannot  find  a
valid definition of the "bootdelay" environment variable.

My suspicion that your  environment  is  misconfigured  seems  to  be
correct.

> > Why do you reserve 512 kB for  U-Boot?  U-Boot  is  needs  much  less
> > memory!
> > 
> err .. i dunno why..  did i reserve that much? hmm where do i configure
> this. I hav just upgrade from ppcboot actually... and i am very new at
> this boot loader stuff.

All this is set in the  board's  config  file.  The  relevant  config
variables are documented in the README file.

> > Where are your environment variables stored? In flash? Embedded with
> > the U-Boot image or separate?
> > 
> environment variables?? i m really sorry, i m not sure what you are
> talkin about. Is it board.c? Everything , the u-boot, kernel and ramdisk
> is in flash.

I am talking about variables and configuration parameters that U-Boot
stores in the "environment". The envrionment can be stored in  flash,
I2C or SPI EEPROM, NVRAM, etc.

Your environment is obviously misconfigured, which is the reason  for
your problems.


> Thanks for your time in helping me out. I am sorry but I am new at this.
> Well everyone has to start learning from somewhere.

Maybe you find it useful to have a look at http://www.denx.de/re/DPLG.html

Although this does not answer your immediate questions, it might help
you to understand the concept of environment variables and what  they
can be used for.


Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd at denx.de
All your people must learn before you can reach for the stars.
	-- Kirk, "The Gamesters of Triskelion", stardate 3259.2