From: Serge Semin <fancer.lancer@gmail.com>
To: Jiaxun Yang <jiaxun.yang@flygoat.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Subject: Re: CPUs with EVA support
Date: Mon, 21 Dec 2020 10:04:34 +0300 [thread overview]
Message-ID: <20201221070434.yom3neoeir43ek2k@mobilestation> (raw)
In-Reply-To: <d45cb374-f3dc-8c26-6b0f-27bec45854a9@flygoat.com>
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
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.
> >
>
next prev parent reply other threads:[~2020-12-21 7:05 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-20 19:32 CPUs with EVA support Thomas Bogendoerfer
2020-12-21 0:38 ` Jiaxun Yang
2020-12-21 7:04 ` Serge Semin [this message]
2020-12-21 7:21 ` Jiaxun Yang
2020-12-21 7:37 ` YunQiang Su
2020-12-21 7:49 ` Serge Semin
2020-12-27 22:26 ` Thomas Bogendoerfer
2020-12-28 1:28 ` Jiaxun Yang
2020-12-28 10:47 ` Thomas Bogendoerfer
2020-12-22 14:46 ` Hauke Mehrtens
2020-12-23 14:46 ` Thomas Bogendoerfer
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