[U-Boot] [PATCH 5/5] MX5:MX53: add initial support for MX53EVK board

Wolfgang Denk wd at denx.de
Fri Dec 17 06:41:12 CET 2010


Dear Jason Liu,

In message <AANLkTik9SB4EP2YLMeCa-TNb4c7Z-2CPphLtBqfx6J8B at mail.gmail.com> you wrote:
> 
> There is pretty much different with I.MX51 ROM,  we will not use DCD
> data file to config the
> DDR script since ROM has the DCD size limitation and use the advance
> feature of what we
> called plug-in,  the plug-in code must be in the first 2K of MMC card
> from 0x400 offset, that's
> why we need put this code section before start.S. The plug-in code
> will be called by boot ROM
> to do DDR init first and copy u-boot to DDR and jump to _start  to run it.

It seems you did not try to think what it would actually mean to
change your code as requested.

Actually nne of the above is reason that it must be done in your way.
All this can be acchieved in the way Stefano suggested as well.

> I know that you add the .imx format support, that's is simple to add
> one flash header which can be
> calculated staticly and glue it to u-boot.bin but it's impossible for
> plug-in feature support of ROM by
> using the same way.

Please explain why is should be impossible? I cannot follow that.

> Does anyone of expert like you and Albert and Wolfgang tell me how to
> do it? It's very important for FSL

Um.. this statement is not very friendly. Do you mean you consider
Stefano to be no expert?  He is the iMX custodian, and there is reason
for that.

> coming many SOCs support, since we will use plug-in feature of boot ROM.

You have received a clear NAK from three persons on that: from
Stefano (iMX custodian), Albert (ARM custodian), and me.

Is this not clear enough?

Best regards,

Wolfgang Denk

-- 
DENX Software Engineering GmbH,     MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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