Re: GEN2:Lager: Only 1 core works when turning off the SW8-PIN4

From: Hiep Cao Minh <cm-hiep@jinso.co.jp>
To: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: "Xuan Truong Nguyen" <nx-truong@jinso.co.jp>,
	"Laurent Pinchart" <laurent.pinchart+renesas@ideasonboard.com>,
	duclm <lm-duc@jinso.co.jp>,
	"Ryusuke Sakato" <ryusuke.sakato.bx@renesas.com>,
	"Kuninori Morimoto" <kuninori.morimoto.gx@renesas.com>,
	"Magnus Damm" <magnus.damm@gmail.com>,
	"Geert Uytterhoeven" <geert+renesas@glider.be>,
	稲吉 <h-inayoshi@jinso.co.jp>,
	"Yoshihiro Shimoda" <yoshihiro.shimoda.uh@renesas.com>,
	Dung：人ソ <nv-dung@jinso.co.jp>,
	"Simon Horman" <horms+renesas@verge.net.au>,
	Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
	"Wolfram Sang" <wsa@sang-engineering.com>
Subject: Re: GEN2:Lager: Only 1 core works when turning off the SW8-PIN4
Date: Mon, 07 Nov 2016 19:37:56 +0900	[thread overview]
Message-ID: <58205984.4000708@jinso.co.jp> (raw)
In-Reply-To: <CAMuHMdVY41ZNypxUs487jpksdsvhzmfRC8SYVe8RA6TdFbx0VQ@mail.gmail.com>

Hi Geert

On 11/07/2016 06:44 PM, Geert Uytterhoeven wrote:
> Hi Hiep,
>
> On Fri, Sep 30, 2016 at 12:05 PM, Hiep Cao Minh <cm-hiep@jinso.co.jp> wrote:
>>>>> The issue you're seeing is due to a combination of commits
>>>>> 5f3bca0db8ac01a7
>>>>> ("ARM: shmobile: apmu: Add APMU DT support via Enable method") and
>>>>> dc378795156d980c ("ARM: dts: r8a7790: Add APMU nodes").
>>>>>
>>>>> When debug mode is enabled (SW8-4 = OFF), trying to boot secondary CPUs
>>>>> may
>>>>> lock up the system after a cold boot, depending of boot load version.
>>>>> Hence
>>>>> we explicitly prohibit that. BTW, this has been the case on Koelsch
>>>>> since
>>>>> commit
>>>>> 277efd30cfc72ec2 ("ARM: shmobile: Check r8a7791 MD21 at SMP boot").
>>>>>
>>>>> Now, does series "[PATCH/RFT 0/4] ARM: shmobile: R-Car Gen2: Allow
>>>>> booting
>>>>> secondary CPU cores in debug mode" (included in all renesas-drivers
>>>>> releases
>>>>> during September) fix it for you?
>>>> Thanks for your series patches.
>>>> I have had some problems of receiving post mail from Linux-Renesas
>>>> Mailing
>>>> List recently.
>>>>
>>>> Could you please forward these series patches to me?
>>> They're included in renesas-drivers.
>>> You can also get them from gitweb at
>>>
>>> https://git.kernel.org/cgit/linux/kernel/git/geert/renesas-drivers.git/log/?h=topic/rcar-secondary-booting-in-debug-mode-v1
>> Thanks, I'll confirm these patches on my board.
> Have you tried this series on your Lager? If yes, can I add your Tested-by?
Sorry for the late reply!.
I have totally forgotten my reporting test result to you.
I have tested this series on my Lager board. The bug has been fixed.

> Which ES version of R-Car H1 do you have? If you don't know, you can
> tell me the result of "md.l 0xff000044 1" in U-Boot.
My board information:
LAGER SPI_LOADER V0.28 2014.09.29
DEVICE S25FL512

U-Boot 2016.01 (Jul 27 2016 - 15:27:42 +0900)

CPU: Renesas Electronics R8A7790 rev 2.0
-----
=> md.l 0xff000044 1
ff000044: 00004510                               .E..
----

Thanks,
Jinzai Solution Inc,
Hiep.

> Thanks!
>
> Gr{oetje,eeting}s,
>
>                          Geert
>
> --
> Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
>
> In personal conversations with technical people, I call myself a hacker. But
> when I'm talking to journalists I just say "programmer" or something like that.
>                                  -- Linus Torvalds
>