[U-Boot] Can I have a backup boot option ?

[Wolfgang Denk]

Dear Mark,

In message <492AA134.7010008 at mimc.co.uk> you wrote:
> 
> If an end-user inserts an MMC card containing some "magic marker" files, the target will detect these and boot from the MMC card instead of using the standard boot option.
...
> I've done a quick check of the README and the source code, but nothing else seems to stand out as a possible solution.

Note: please restrict your line lenght to some 70 or so characters.

There are several  auto-update  /  recovery  solutions  available  in
current  source  code.  Just look around - search for file names that
contain auto_update or fwupdate, and/or read doc/README.update

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
Sorry, but my karma just ran over your dogma.