[U-Boot-Users] Arithmetic expansion from shell

[Hemant Pedanekar]

Thanks for the info, Wolfgang.

I need to parse the multi-file image (across updates) to form the
bootargs (how many mtds to form, rootfs, etc) before u-boot boots the
new image.

-- 
Regards,
Hemant.

"The best presents don't come in boxes."


On 6/7/07, Wolfgang Denk <wd at denx.de> wrote:
> In message <7114f92a0706070454g38b5d8e9s135236addf46e216 at mail.gmail.com> you wrote:
> >
> > I wanted to write a script which could parse file image header before
> > booting. Initially we thought Hush script could do the job but it
> > seems the arithmetic expansion is not supported with either the
> > default command parser or the hush shell (no 'let' command either).
> > Could you please confirm if this is correct?
>
> Yes.
>
> > Also, if the above is correct, I am planning to write a bootstrap
> > function/command (board specific code) with something like
> > bootcmd=<bootsrap init cmd>; bootm
>
> What would that be good for?
>
> > Is this write approach?
>
> Depends on what you want to do. I've been doing a lot of things with
> U-Boot, and so far I never needed this.
>
> Best regards,
>
> Wolfgang Denk
>
> --
> DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
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