[ELDK] remote upgrade to a read-only nor flash partition

Wolfgang Denk wd at denx.de
Wed May 2 11:53:20 CEST 2012

Dear Dieter,

In message <4206182445660643B9AEB8D4E55BBD0A157521115E at HERMES2> you wrote:
> we want to make a remote upgrade of a kernel image in an embedded
> system. The kernel is on a read-only nor flash partition. Now I have

Hm... sounds like an oxymoron to me.

If the partition is read-only, you can only read from it, but you
cannot update it.

> read about mtd-utils that they are problematic doing those things.

Maybe you could be a bit more specific?  Which exact issues do you see
with using the MTD utulities?

> Have anyone experience about remote upgrade with mtd-utils or should
> we go another way.

The fundamental problem of your approach is that a read-only storage
device cannot be written (otherwise it would not be read-only). Given
the lack of precise information it is also not possible to say if the
mtd-utils are suitable for what you want to do.

Please also note that your question is quite off topic here: this has
nothing to do with ELDK.  If you have specific, MTD related questions
you should ask these on the MTD mailing list instead.

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
The only way to get rid of a temptation is to yield to it.
                                                        - Oscar Wilde

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