firm date: armv5 support removal scheduled for 2019-12-31

[Mori Hiroki]

Hi

My old hardware try have two reason.

One is my first BSD is LUNA68K that is 68030 with 8M memory at 1988. 
Current my target have more memory.

Second is I think more material world make atomic accident at 3.11.
I want less material world.

Also I try to support 1136J-S r1p5. I get single user on this. But still problem.

I seem many commit is good. But a few commit make problem.

Finaly UNIX started on 32 bit architecture. I hope we remain 32 bit support.

Regards

Hiroki Mori


----- Original Message -----
>From: Warner Losh <imp at bsdimp.com>
>To: Mori Hiroki <yamori813 at yahoo.co.jp> 
>Cc: "freebsd-arch at freebsd.org" <freebsd-arch at freebsd.org>; "freebsd-arm at freebsd.org" <freebsd-arm at freebsd.org>
>Date: 2019/10/23, Wed 00:07
>Subject: Re: firm date: armv5 support removal scheduled for 2019-12-31
> 
>
>
>
>
>On Thu, Oct 10, 2019 at 4:35 AM Mori Hiroki <yamori813 at yahoo.co.jp> wrote:
>
>Hi
>>
>>I have very angry. Because of this.
>>
>>One is Maverl soc is not right performance on FreeBSD now.
>>
>>Maverl FreeBSD is 10-30 times slow from Linux.
>>
>>I think armv5t support is not complete on FreeBSD.
>>
>>You say armv5t pmap have bug. But my RT1310(armv5t) work well half of year.
>>
>>I try ldd on armv5t one month ago. That is support for armv4 because of
>>
>>that don't know armv4t instruction by default.
>>
>
>
>Hi Mori-san,
>
>
>I get your love of the old hardware. However, we can't support the full range of old hardware at this time. We don't have enough people actively working on it. We have dozens of people complaining that they can't install on old hardware that we used to support because things have decayed. I think it's really awesome you've gotten the RT1310 working well. I've never been able to get mine going, despite spending several days on it over the last year or two.  I've been unable to get my *Plug boards working well. They may work fine to boot, but will often panic if I have to fsck because that device doesn't support unaligned I/O.
>
>
>We have trouble enough with the more modern stuff... Trying to also support this really old stuff just drains resources from the project.
>
>
>Warner
> 
>Hiroki Mori
>>
>>
>>----- Original Message -----
>>> From: Warner Losh <imp at bsdimp.com>
>>> To: "freebsd-arch at freebsd.org" <freebsd-arch at freebsd.org>; "freebsd-arm at freebsd.org" <freebsd-arm at freebsd.org>
>>> Cc: 
>>> Date: 2019/10/10, Thu 06:40
>>> Subject: firm date: armv5 support removal scheduled for 2019-12-31
>>> 
>>>G reetings,
>>> 
>>> There's been much talk of removing armv5 support from FreeBSD in FreeBSD
>>> 13. This talk has been ongoing since before 12 was branched among the key
>>> arm developers. The compromise for the FreeBSD 12 was to have one final
>>> FreeBSD armv5 release for a few straggling users that needed (or think they
>>> needed) this release and it would be removed before FreeBSD 13.
>>> 
>>> The reason to remove this is due to the increased burden armv5 has
>>> presented on the system. We have a separate pmap for v5 which has known or
>>> suspected bugs relating to unaligned I/O. No developers have the armv5
>>> boards in service anymore. They have ceased being relevant to FreeBSD's
>>> success with the plethera of armv7 boards that are on the market. No new
>>> armv5 boards have been made in a long time. The FreeBSD project hasn't
>>> produce armv5 binaries for 12.x at all (the binaries produced earlier could
>>> not have possibly booted, though the userland binaries worked if you could
>>> otherwise install the system). Finally, llvm's lld doesn't support 
>>> armv5.
>>> It would ease integration if we didn't have to worry about a fallback for
>>> armv5. It would be one fewer dependency on the old binutils toolchain in
>>> the tree.
>>> 
>>> So, taking all these things together, the time has come to schedule removal
>>> of armv5 support from FreeBSD. The end of the year seems like a good date
>>> to select for planning this removal, getting whatever notices should be put
>>> into place and warning people about the next release in the most formal way
>>> possible (more informal warnings have been going on for over a year,
>>> starting with armv4 support removal in 12).
>>> 
>>> I'm posting this now to gather feedback and, if necessary, create a
>>> checklist of things to do before removal.
>>> 
>>> Warner
>>> _______________________________________________
>>> freebsd-arm at freebsd.org mailing list
>>> https://lists.freebsd.org/mailman/listinfo/freebsd-arm
>>> To unsubscribe, send any mail to "freebsd-arm-unsubscribe at freebsd.org"
>>> 
>>
>>
>
>