Re: [Fud] Charter Text
Hannes Tschofenig <hannes.tschofenig@gmx.net> Thu, 10 August 2017 11:47 UTC
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To: Olaf Bergmann <bergmann@tzi.org>
Cc: Emmanuel Baccelli <Emmanuel.Baccelli@inria.fr>, fud@ietf.org
References: <8f8528da-d1eb-08c7-b3fe-b1f4febed595@gmx.net> <CANK0pbbbgEONiCeuQGOuRO9Gq62RpAVhh53xLxd5JOMQtJg-_g@mail.gmail.com> <87d187oehr.fsf@aung.informatik.uni-bremen.de> <56ebab2e-86d2-bab4-be48-303fc0da0c81@gmx.net> <87poc6l4et.fsf@aung.informatik.uni-bremen.de>
From: Hannes Tschofenig <hannes.tschofenig@gmx.net>
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Date: Thu, 10 Aug 2017 13:47:36 +0200
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Subject: Re: [Fud] Charter Text
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Hi Olaf, a few remarks below. On 08/08/2017 12:50 PM, Olaf Bergmann wrote: > Hi Hannes, > > Hannes Tschofenig <hannes.tschofenig@gmx.net> writes: > >> I believe Emmanuel needs to tell us a bit more about the use case he has >> in mind. > > And of course others as well. Hannes did a good outline of what he > thinks should be addressed. Those who have use cases that are not > covered by this should speak up. Certainly. > >> The use cases I would like to cover are: >> >> - a developer creates a single firmware image, which may consist of >> source code from various parties and may also contain binaries from >> third parties. >> >> - a developer creates multiple firmware images (since the device has >> multiple microcontrollers that need to be updated). >> >> In this model the update service on a microcontroller gets code from a >> single source only (at least for the device it appears so since it does >> not know whether an included library was written by a different developer). > > Yes, I agree in principle. > > What we have seen (not only at the IOTSU workshop but also on existing > devices such as VoIP phones) is that firmware updates typically do not > come as a monolithic package but that in modules that can be updated > separately (the most common---and desirable---split is between the OS > and the basic bootloader). I think that at least this should be > addressed here. FWIW I would not consider VoIP phones in scope of the devices we would be looking at. I also recall discussions at the IoTSU workshop but I remember that there was some confusion between the concept of a monolithic firmware images and what is actually sent over the wire (full image vs. differential updates). I don't think we ever talked about bootloaders vs. the rest of the OS. > >> What I specifically want to exclude is a model like JavaScript where you >> can get code from multiple different sources dynamically during code >> execution. > > I agree as well. > > Grüße > Olaf > Ciao Hannes
- [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Emmanuel Baccelli
- Re: [Fud] Charter Text Olaf Bergmann
- Re: [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Olaf Bergmann
- Re: [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Olaf Bergmann
- Re: [Fud] Charter Text Carsten Bormann
- Re: [Fud] Charter Text Thomas Eichinger
- Re: [Fud] Charter Text Russ Housley
- Re: [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Hannes Tschofenig
- Re: [Fud] Charter Text Russ Housley