[U-Boot] Executing uboot from FLASH

[Wolfgang Denk]

Dear Mike Breneman,

In message <B0A7AF226B49A14897036E9B3A68CFFECB1AB0F248 at HQ-EXCH-7.corp.brocade.com> you wrote:
>
> I am working with the AMCC PPC 405Ex. I will have very limited RAM
> on my production board, thus I would like u-boot to execute from

How much is "very limited" ?

If you want to use that board for any reasonable pourposes, which
justify the use of a boot loader like U-Boot, then you probably have
more than enough RAM to run U-Boot.

> FLASH rather than RAM. Has anyone else done this? I played with this
> a couple of days with out much success. Is it do-able, without too
> much effort?

It would be significant effort. And it makes not much sense, as you
would lose a lot of basic functionality, resp. have to work around the
resulting restrictions.

It doesn't make sense to me. Rather think how to make it fit into
avilable RAM. How much RAM do you have?

Best regards,

Wolfgang Denk

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