From: Robert Richter <rric-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>
Cc: Ganapatrao Kulkarni
<gpkulkarni-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
"devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Arnd Bergmann <arnd-r2nGTMty4D4@public.gmane.org>,
Pawel Moll <Pawel.Moll-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Catalin Marinas <Catalin.Marinas-5wv7dgnIgG8@public.gmane.org>,
Will Deacon <Will.Deacon-5wv7dgnIgG8@public.gmane.org>,
"linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
Robert Richter <rrichter-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>,
Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Radha Mohan Chintakuntla
<rchintakuntla-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org>,
"linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org"
<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org
Subject: Re: [PATCH 2/5] arm64, thunder: Add initial dts for Cavium Thunder SoC
Date: Fri, 1 Aug 2014 19:04:11 +0200 [thread overview]
Message-ID: <20140801170411.GG4703@rric.localhost> (raw)
In-Reply-To: <20140731113301.GE22994@leverpostej>
Mark,
On 31.07.14 12:33:01, Mark Rutland wrote:
> On Thu, Jul 31, 2014 at 12:12:33PM +0100, Ganapatrao Kulkarni wrote:
> > We mark RAM used by ATF as secure-RAM, however we don't support
> > secure/non-secure address aliasing.
> > i.e, a DRAM address that can be referenced from both a secure PA and a
> > non-secure PA is not allowed.
>
> What exactly do you mean by "not allowed"?
It actually means "not possible" since secure and non-secure memory is
kept in separate address ranges.
> If Linux maps that memory, what happens?
>
> What if Linux tried to read or write to it?
>
> If Linux should not map that memory, it should not be described in the
> memory map to begin with.
Linux never will see secure-RAM. Firmware must be sure to report the
correct non-secure memory ranges to the OS (e.g. unsecure mem size =
total size - secure mem size).
-Robert
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
next prev parent reply other threads:[~2014-08-01 17:04 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1406732794-20920-1-git-send-email-rric@kernel.org>
2014-07-30 15:06 ` [PATCH 2/5] arm64, thunder: Add initial dts for Cavium Thunder SoC Robert Richter
2014-07-30 18:14 ` Olof Johansson
[not found] ` <CAOesGMh9KkdKB_ytJ7CCbkPW7dHTX91NdfDMsMNfbmOBVOJ8PQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-08-01 16:18 ` Robert Richter
2014-08-28 16:15 ` Robert Richter
2014-08-28 16:25 ` Mark Rutland
2014-08-28 16:31 ` Olof Johansson
[not found] ` <CAOesGMjtjcgUNV8WLp6_Zbok-0zq5afg_KS8QJYp=kDVabrQvg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-08-28 18:14 ` Robert Richter
[not found] ` <20140828181429.GO4703-vWBEXY7mpu73kLQC+b9v0A@public.gmane.org>
2014-08-28 23:01 ` Olof Johansson
2014-08-29 12:10 ` Robert Richter
[not found] ` <20140829121023.GW13038-vWBEXY7mpu73kLQC+b9v0A@public.gmane.org>
2014-08-29 13:49 ` [PATCH] arm64, dts: Add dtbs_install make target Robert Richter
2014-09-05 6:55 ` Robert Richter
[not found] ` <1406732794-20920-3-git-send-email-rric-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
2014-07-30 15:46 ` [PATCH 2/5] arm64, thunder: Add initial dts for Cavium Thunder SoC Mark Rutland
2014-07-30 16:37 ` Rob Herring
2014-07-31 11:32 ` Robert Richter
[not found] ` <CAL_JsqLJ_W34XTF2aMOW9z+Gq4oxbrX1RztyJN8Mi0OFPeNxfg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-30 17:48 ` Mark Rutland
2014-08-05 8:47 ` Robert Richter
2014-07-31 12:34 ` Robert Richter
[not found] ` <20140731123443.GS4703-vWBEXY7mpu73kLQC+b9v0A@public.gmane.org>
2014-07-31 15:22 ` Rob Herring
[not found] ` <CAL_JsqKgfjV4sEZOWuH4YcMjeOA_yNDvZLv_jTi_Sb=27cOD3g-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-31 16:35 ` Robert Richter
2014-07-31 8:41 ` Ganapatrao Kulkarni
[not found] ` <CAFpQJXWKybVUxpHg8MVrVMjLj3swuxLGo_9r1tL+gZ4hxUHTzQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-31 9:53 ` Mark Rutland
2014-07-31 11:12 ` Ganapatrao Kulkarni
[not found] ` <CAFpQJXUtP=v7FSLd3_OU7FG3w=pKYy2ihTQULA_DPEacsSu0Og-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-31 11:33 ` Mark Rutland
2014-08-01 17:04 ` Robert Richter [this message]
2014-08-01 18:00 ` Mark Rutland
2014-08-01 10:25 ` Robert Richter
2014-07-30 18:12 ` Olof Johansson
[not found] ` <CAOesGMj9PnfddJO7PorZ7U2OoBFBe4LqONRnbJeMiEkQV1mmWw-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2014-07-30 18:35 ` Mark Rutland
2014-07-31 10:24 ` Arnd Bergmann
[not found] ` <201407311224.14097.arnd-r2nGTMty4D4@public.gmane.org>
2014-07-31 11:33 ` Robert Richter
2014-07-30 15:06 ` [PATCH 3/5] arm64, thunder: document devicetree bindings " Robert Richter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20140801170411.GG4703@rric.localhost \
--to=rric-dgejt+ai2ygdnm+yrofe0a@public.gmane.org \
--cc=Catalin.Marinas-5wv7dgnIgG8@public.gmane.org \
--cc=Pawel.Moll-5wv7dgnIgG8@public.gmane.org \
--cc=Will.Deacon-5wv7dgnIgG8@public.gmane.org \
--cc=arnd-r2nGTMty4D4@public.gmane.org \
--cc=devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org \
--cc=gpkulkarni-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
--cc=ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org \
--cc=leif.lindholm-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org \
--cc=linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org \
--cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
--cc=mark.rutland-5wv7dgnIgG8@public.gmane.org \
--cc=rchintakuntla-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org \
--cc=robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org \
--cc=rrichter-YGCgFSpz5w/QT0dZR+AlfA@public.gmane.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).