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From: afzal.mohd.ma@gmail.com (Afzal Mohammed)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 0/2] Embedding Position Independent Executables
Date: Sat, 23 Apr 2016 15:20:57 +0530	[thread overview]
Message-ID: <20160423095057.GA2630@afzalpc> (raw)
In-Reply-To: <20160422224958.GD17051@piout.net>

Hi,

On Sat, Apr 23, 2016 at 12:49:58AM +0200, Alexandre Belloni wrote:

> I think Heiko clarified it but there are actually multiple platforms
> that will benefit from this infrastructure. I can name at least at91,
> rockchip, sunxi and am335x. On am335x, this has been solved by running
> that code on the cortex M3 instead of doing that from Linux but it
> forces to compile and load a firmware on the cortex M3 so it is not
> available for anything else.

afaik on am335x, it has been solved so far by not yet supporting
suspend-resume in mainline ;)

afaiu, am335x suspend-resume has 2 parts, one run in A8 & other in M3.
Saving & restoring RAM config, putting to self refresh in addition to
wfi invocation is handled by A8 code running in OCMC, while M3 cuts A8
clock & does other PM things that can't be done in A8.

Regards
afzal

WARNING: multiple messages have this Message-ID (diff)
From: Afzal Mohammed <afzal.mohd.ma@gmail.com>
To: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Russell King - ARM Linux <linux@arm.linux.org.uk>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Ard Biesheuvel <ard.biesheuvel@linaro.org>,
	Dave Martin <Dave.Martin@arm.com>,
	Olof Johansson <olof@lixom.net>,
	Doug Anderson <dianders@chromium.org>,
	Heiko Stuebner <heiko@sntech.de>, Russ Dill <Russ.Dill@ti.com>
Subject: Re: [PATCH 0/2] Embedding Position Independent Executables
Date: Sat, 23 Apr 2016 15:20:57 +0530	[thread overview]
Message-ID: <20160423095057.GA2630@afzalpc> (raw)
In-Reply-To: <20160422224958.GD17051@piout.net>

Hi,

On Sat, Apr 23, 2016 at 12:49:58AM +0200, Alexandre Belloni wrote:

> I think Heiko clarified it but there are actually multiple platforms
> that will benefit from this infrastructure. I can name at least at91,
> rockchip, sunxi and am335x. On am335x, this has been solved by running
> that code on the cortex M3 instead of doing that from Linux but it
> forces to compile and load a firmware on the cortex M3 so it is not
> available for anything else.

afaik on am335x, it has been solved so far by not yet supporting
suspend-resume in mainline ;)

afaiu, am335x suspend-resume has 2 parts, one run in A8 & other in M3.
Saving & restoring RAM config, putting to self refresh in addition to
wfi invocation is handled by A8 code running in OCMC, while M3 cuts A8
clock & does other PM things that can't be done in A8.

Regards
afzal

  reply	other threads:[~2016-04-23  9:50 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-04-03  7:23 [PATCH 0/2] Embedding Position Independent Executables Alexandre Belloni
2016-04-03  7:23 ` Alexandre Belloni
2016-04-03  7:23 ` [PATCH 1/2] ARM: PIE infrastructure Alexandre Belloni
2016-04-03  7:23   ` Alexandre Belloni
2016-04-04 10:00   ` Russell King - ARM Linux
2016-04-04 10:00     ` Russell King - ARM Linux
2016-04-22 23:15     ` Alexandre Belloni
2016-04-22 23:15       ` Alexandre Belloni
2016-04-25 10:14       ` Dave P Martin
2016-04-25 10:14         ` Dave P Martin
2016-04-27 19:39       ` Russell King - ARM Linux
2016-04-27 19:39         ` Russell King - ARM Linux
2016-04-03  7:23 ` [PATCH 2/2] ARM: at91: pm: switch to the " Alexandre Belloni
2016-04-03  7:23   ` Alexandre Belloni
2016-04-03 12:16   ` kbuild test robot
2016-04-03 12:16     ` kbuild test robot
2016-04-04 10:02   ` Russell King - ARM Linux
2016-04-04 10:02     ` Russell King - ARM Linux
2016-04-04  9:57 ` [PATCH 0/2] Embedding Position Independent Executables Russell King - ARM Linux
2016-04-04  9:57   ` Russell King - ARM Linux
2016-04-04 15:11   ` Heiko Stuebner
2016-04-04 15:11     ` Heiko Stuebner
2016-04-22 22:49   ` Alexandre Belloni
2016-04-22 22:49     ` Alexandre Belloni
2016-04-23  9:50     ` Afzal Mohammed [this message]
2016-04-23  9:50       ` Afzal Mohammed

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