[U-Boot] u-boot boot sequence

[Wolfgang Denk <wd@denx.de>]

Dear Marcel,

In message <201009292233.04020.korgull@home.nl> you wrote:
>
> > see tools/env for tools to read and write the U-Boot environment
> > settings from Linux. This can be used to change the boot command, boot
> > delay etc.
> 
> I used an AVR processor before and did this in the environment settings but 
> currently that doesn't work for me yet.
> My env is in nor flash and I don't have a driver in linux yet to communicate 
> with it. I'll look into this.

Linux MTD drivers for NOR flash are really standard; they should work
out of the box on all architectures.

> Currently I write settings to eeprom but have no idea if it can be read from 
> u-boot. I currently only use it for items that I need in Linux. I did see some 

Yes, you can do this. Use the "eeprom read" (or raw "i2c" commands) to
read the eemprom content into RAM; then you can use "env import" to
import it into the environment.

Or you can combine "env export" with "eeprom write" for the opposite
direction.

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-10 Fax: (+49)-8142-66989-80 Email: wd at denx.de
"Who is the oldest inhabitant of this village?"
"We haven't got one; we had one, but he died three weeks ago."