Re: [Fud] Constrained Firmware update challenge

Carsten Bormann <cabo@tzi.org> Mon, 17 April 2017 17:01 UTC

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From: Carsten Bormann <cabo@tzi.org>
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Date: Mon, 17 Apr 2017 19:01:41 +0200
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To: Michael Richardson <mcr+ietf@sandelman.ca>
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Subject: Re: [Fud] Constrained Firmware update challenge
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> On Apr 17, 2017, at 17:26, Michael Richardson <mcr+ietf@sandelman.ca> wrote:
> 
> Updates may be impossible
> (burnt into ROM),

Too much code for my taste (and much of this is security relevant, so it probably needs updates at some point).

> or it might just be a special part of the flash that
> is seperate from the main code.

More likely, and more likely that you’d keep two copies of that, so you can upgrade the bootloader itself.
(Needs jump tables if that massive amount of code also needs to be reused by the application.)

Grüße, Carsten