[Lenny400] Squeeze rootfs and modernising the kernel

Dr. H. Nikolaus Schaller hns at goldelico.com
Wed Apr 1 07:35:11 CEST 2015


Hi David,

Am 31.03.2015 um 23:34 schrieb David Boddie <david at boddie.org.uk>:

> On Tuesday 31. March 2015, Dr. H. Nikolaus Schaller wrote:
>> Am 24.03.2015 um 23:46 schrieb David Boddie <david at boddie.org.uk>:
> 
>>> I noticed the 3.12-wip-letux400 branch at
>>> 
>>> http://git.goldelico.com/gta04-kernel.git
>>> 
>>> and will look into that.
>> 
>> Well, it is just a dummy. No real work has been done to support the Letux
>> 400 in this kernel, but I would be happy to support such a project. Maybe
>> we could even rebase and jump forward to 4.0-rc6 :)
> 
> We'll see. Unfortunately, quite a lot has happened since 2.6.24.3. :-)

Yes… Approx. 35 releases (with 6-8 rc each).

> 
>>> Is that likely to be a better approach than
>>> attempting to merge the changes to the 2.6.24 kernel into a later
>>> release?
>> 
>> The problem is that the jz4730 SoC isn’t supported by any official
>> kernel. Just the jz4740 SoC and they have quite some differences (but also
>> similarities).
>> 
>> And, the documentation of the jz4730 did exist online but has disappeared
>> a while ago. So the first step would be to collect as much about the jz4730
>> SoC as possible.
>> 
>> Maybe you can find copies of
>> http://projects.kwaak.net/twiki/bin/view/Epc700/WebHome in some wayback
>> machine?
> 
> There seem to be some documents that can be retrieved via archive.org and
> also elsewhere.
> 
>> Or someone just reading this list has archived some (or all) documents?
>> 
>> I have uploaded what I had found a while ago:
>> 
>> http://download.goldelico.com/letux-400/files/
> 
> Thanks for those. I think they will overlap what has already been found, but
> it's always good to have another archive available.
> 
>> The next step could be to extend the mips cpu support for the jz4730 in
>> the kernel.org arch/mips tree (unfortunately they are not yet on DT like
>> ARM which would make some things a little easier like formally describing
>> the SoC).
> 
> That's what I've been led to believe regarding the device tree work but I'm
> not focusing on this myself. At the moment I'm trying to reuse work I've done
> on other embedded-like systems for the user space software the minibook will
> need. I'll try to keep you updated about both of these efforts. Is this
> mailing list the best place for that?

Yes, please do!

There was another mailing list not only for the Letux 400 but all MIPS based 
minibooks. I don’t know if it is still alive:

http://lists.linuxtogo.org/cgi-bin/mailman/listinfo/mipsbook-devel

Well, the server is still up but the last message is from 2015.

So let’s test: I have put it on CC so that probably the best is to write to both
lists to get the broadest audience.

BR,
NIkolaus



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