Re: CPUs with EVA support

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Serge Semin <fancer.lancer@xxxxxxxxx> 于2020年12月21日周一 下午3:05写道:
>
> Hello Thomas, Jiaxun
>
> On Mon, Dec 21, 2020 at 08:38:00AM +0800, Jiaxun Yang wrote:
> > 在 2020/12/21 上午3:32, Thomas Bogendoerfer 写道:
> > > Hi;
> > >
> > > I've started looking how to get rid of get_fs/set_fs for MIPS and
> > > my current obstacle is EVA support.
> > >
> > > Looking for CPUs supporting EVA I only found P5600, are there more ?
> >
> > Hi Thomas,
> >
> > It is a optional feature for M14k but nobody enabled it :-(
> >
> > >
> > > Does someone sell boards with an EVA enabled CPU ?
> >
> > Baikal-T1 supports EVA.
>
> Yeap, Baikal-T1 SoC does support EVA since based on P5600 does.
> Moreover the feature is enabled in my CSP code by default, but
> the segments mapping is initialized to fully match the legacy
> MIPS address space layout.
>
> Regarding the boards with Baikal-T1 to purchase. It's available and
> demonstrated on the company site:
> https://www.baikalelectronics.com/products/339/
>
> Currently a single retailer selling the item is Russian-based:
> https://www.chipdip.ru/product/bfk3.1?from=suggest_product
> (Alas the site doesn't have an English version, so please use the
> Goog-xlate.)
> If for some reason you still won't be able to purchase it from there
> please send me an email directly.
>
> (Today I've got a suspicious message on my corporate inbox from a guy
> - Yunqiang Su with email domain @cipunited.com, who stated that CIP

Yes. It is me.
CIP is holding the business of MIPS in China (including HK, Macao).
And now I have a budget for MIPS eco-system: for team and devices.

> United wants to purchase one or more of them for you and requested to
> give them the company sells contacts. I didn't response, because the
> message structure looked more like a spam, than an official request.
> It was also strange not to see you in CC.)
>
> Regarding the Baikal-T1 boards being finally supported in the kernel.
> I am still working on it. There are several more SoC-device drivers
> to fix and I'll be ready to submit the CSP/BSP code to the MIPS arch
> subsystem.
>
> -Sergey
>
> >
> > >
> > > How good is EVA support in qemu ?
> >
> > EVA is functional in QEMU.
> > I had tested it with P5600 malta system.
> >
> > - Jiaxun
> >
> > >
> > > Thomas.
> > >
> >



-- 
YunQiang Su




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