linux-kernel - Re: regression for m68k/coldfire

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Date:   Mon, 6 Feb 2017 21:40:53 +1000
From:   Greg Ungerer <gerg@...inux.org>
To:     Laurent Vivier <laurent@...ier.eu>
Cc:     Waldemar Brodkorb <wbx@...nadk.org>,
        John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>,
        Nikita Yushchenko <nikita.yoush@...entembedded.com>,
        linux-kernel@...r.kernel.org, linux-m68k@...r.kernel.org,
        uclinux-dev@...inux.org, geert@...ux-m68k.org
Subject: Re: regression for m68k/coldfire

Hi Laurent,

On 04/02/17 19:49, Laurent Vivier wrote:
> Le 04/02/2017 à 03:03, Greg Ungerer a écrit :
>> Hi Laurent,
>>
>> On 04/02/17 01:22, Laurent Vivier wrote:
>>> Le 03/02/2017 à 16:17, Waldemar Brodkorb a écrit :
>> [snip]
>>>> Btw: Laurent, are you m68k with mmu support are going to be included
>>>> upstream? I always carry an old binary for any m68k with mmu testing.
>>>
>>> I'm working to have the FPU included for now, that will allow to have
>>> the linux-user qemu enabled for 680x0 upstream.
>>>
>>> I have a 68040 MMU implementation that I will send after this step.
>>> I didn't have a look to the ColdFire MMU (is there one?), but as 68040
>>> is not the same as the 68030 one, I don't expect it works with coldfire.
>>
>> There is a ColdFire MMU in some v4 ColdFire parts, for example
>> the 547x, 548x, 5441x and 5445x families. It is not compatible with
>> the older 68020/86030/68040 MMU. It is supported in mainline Linux -
>> at least for the 547x and 548x parts.
>>
>> It would be really nice to have support for ColdFire MMU in QEMU :-)
>
> I can work on this. Do you have a Coldfire distro I can install?

This is the one I use:

   http://www.uclinux.org/pub/uClinux/dist/

(toolchains for it at http://www.uclinux.org/pub/uClinux/m68k-elf-tools/)

Or if you don't want to compile it there is a ready to
run binary for the m5475evb at:

   http://www.uclinux.org/ports/coldfire/binary.html

Regards
Greg