linux-kernel - Re: [PATCH] xtensa: Partially Revert "xtensa: Remove unnecessary of_platform

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Message-ID: <20160726194945.GB1787@octofox.metropolis>
Date:	Tue, 26 Jul 2016 22:49:45 +0300
From:	Max Filippov <jcmvbkbc@...il.com>
To:	Rob Herring <robh@...nel.org>
Cc:	Chris Zankel <chris@...kel.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-xtensa@...ux-xtensa.org,
	Kefeng Wang <wangkefeng.wang@...wei.com>,
	Guenter Roeck <linux@...ck-us.net>
Subject: Re: [PATCH] xtensa: Partially Revert "xtensa: Remove unnecessary
 of_platform_populate with default match table"

On Tue, Jul 26, 2016 at 02:13:52PM -0500, Rob Herring wrote:
> >> I tried briefly running under QEMU, but didn't have success. If anyone has
> >> up to date instructions that would be helpful as using these[1] didn't
> >> seem to work.
> >
> > I think they're up to date. Another thing that need to be done right is
> > the toolchain: it must match the configured CPU core. Please refer to
> >   http://wiki.linux-xtensa.org/index.php/Toolchain_Overlay_File
> > for more details.
> 
> I don't build toolchains...

The toolchain for xtensa built with unmodified binutils does not produce
working code. The one at
  https://www.kernel.org/pub/tools/crosstool/files/bin/
and the one shipped with Fedora are broken.

Here's a few working prebuilt toolchains capable of building linux:
  http://jcmvbkbc.spb.ru/~jcmvbkbc/tmp/201604261801/

-- 
Thanks.
-- Max