[U-Boot] trigger automatic update (FIT image) from prompt instead of "updatefile" env variable

[Andreas Pretzsch]

Am Montag, den 11.04.2011, 23:11 +0200 schrieb Wolfgang Denk:
> In message <1302554333.13241.158.camel at ws-apr.office.loc> you wrote:
> > Is there a way to manually trigger an automatic update using a FIT
> > image, based on the way described in doc/README.update ?
> 
> Yes, there is.

I suppose you meant as soon as there is a new command ?


> > I mean beside setting "updatefile" environment variable, saveenv and
> > reboot, but trigger it from U-Boot prompt resp. script ?
> > 
> > As far as I can see, update_tftp() is only called once during the
> > startup, but not referenced by any command.
> 
> It requires a two-step approach.  In the first step, implement such a
> command - patches welcome :-)

Ok, let's see what I can squeeze in before the merge window closes.

Browsing the code, I see four ways to implement this, with #1 being my
favorite. Straightforward and no risk of side effects.
In all variants, I'm unsure about the command name and hope for
suggestions.

1.) new command calling update_tftp(), optionally with address
    parameter to omit the tftp load

2.) additional fdt subcommand, like in
    tftp fit_image ; fdt addr ${loadaddr} ; fdt flash

3.) "imxtract ${loadaddr} flash" or similar

4.) extend "source" command


-- 

carpe noctem engineering
Ingenieurbuero fuer Hard- & Software-Entwicklung Andreas Pretzsch
Dipl.-Ing. (FH) Andreas Pretzsch          Tel. +49-(0)731-5521572
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