From: Pavel Machek <pavel@ucw.cz>
To: pali.rohar@gmail.com, kernel list <linux-kernel@vger.kernel.org>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>
Cc: aaro.koskinen@iki.fi, linux-omap@vger.kernel.org,
lauri.leukkunen@nokia.com
Subject: Re: N900 device tree conversion: how to do first step
Date: Sun, 9 Jun 2013 19:30:06 +0200 [thread overview]
Message-ID: <20130609173006.GC16066@amd.pavel.ucw.cz> (raw)
In-Reply-To: <20130609015944.GA23559@amd.pavel.ucw.cz>
On Sun 2013-06-09 03:59:44, Pavel Machek wrote:
> Hi!
>
> I'd like to convert Nokia N900 to device tree.
>
> Unfortunately, serial port is not easily available (very special cable
> would be needed, does someone know where to get one?) and I don't have
> BDI (and very special cable would be needed, too).
>
> So I tried doing very small first step, hoping that I get booting
> system... obviously I did not.
>
> I tried formally switching to device tree while still booting using
> hardcoded functions. No luck. Does anyone see what I did wrong?
>
> Is it possible that n900 has its main memory somewhere else than
> 0x80000000?
Interesting. It seems that memory setup from atags is indeed
0x8000 0000 size 0x0800 0000
0x8800 0000 size 0x0800 0000
. But hopefully that's just complicated way of saying
0x8000 0000 size 0x1000 0000
.
Anyway, I now see problem with my reasoning: kernel is full of
if (of_have_populated_dt())
tests, so it is impossible to switch to device tree, and still expect
old-style init to work :-(.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
WARNING: multiple messages have this Message-ID (diff)
From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: N900 device tree conversion: how to do first step
Date: Sun, 9 Jun 2013 19:30:06 +0200 [thread overview]
Message-ID: <20130609173006.GC16066@amd.pavel.ucw.cz> (raw)
In-Reply-To: <20130609015944.GA23559@amd.pavel.ucw.cz>
On Sun 2013-06-09 03:59:44, Pavel Machek wrote:
> Hi!
>
> I'd like to convert Nokia N900 to device tree.
>
> Unfortunately, serial port is not easily available (very special cable
> would be needed, does someone know where to get one?) and I don't have
> BDI (and very special cable would be needed, too).
>
> So I tried doing very small first step, hoping that I get booting
> system... obviously I did not.
>
> I tried formally switching to device tree while still booting using
> hardcoded functions. No luck. Does anyone see what I did wrong?
>
> Is it possible that n900 has its main memory somewhere else than
> 0x80000000?
Interesting. It seems that memory setup from atags is indeed
0x8000 0000 size 0x0800 0000
0x8800 0000 size 0x0800 0000
. But hopefully that's just complicated way of saying
0x8000 0000 size 0x1000 0000
.
Anyway, I now see problem with my reasoning: kernel is full of
if (of_have_populated_dt())
tests, so it is impossible to switch to device tree, and still expect
old-style init to work :-(.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2013-06-09 17:30 UTC|newest]
Thread overview: 99+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-09 1:59 N900 device tree conversion: how to do first step Pavel Machek
2013-06-09 1:59 ` Pavel Machek
2013-06-09 9:24 ` Pali Rohár
2013-06-09 9:24 ` Pali Rohár
2013-06-09 16:47 ` Pavel Machek
2013-06-09 16:47 ` Pavel Machek
2013-06-09 17:03 ` Pali Rohár
2013-06-09 17:03 ` Pali Rohár
2013-06-09 17:03 ` Pali Rohár
2013-06-09 17:30 ` Pavel Machek [this message]
2013-06-09 17:30 ` Pavel Machek
2013-06-09 20:11 ` Aaro Koskinen
2013-06-09 20:11 ` Aaro Koskinen
2013-06-13 13:26 ` Pavel Machek
2013-06-13 13:26 ` Pavel Machek
2013-06-13 14:10 ` Tony Lindgren
2013-06-13 14:10 ` Tony Lindgren
2013-06-13 14:28 ` Pavel Machek
2013-06-13 14:28 ` Pavel Machek
2013-06-13 14:57 ` Tony Lindgren
2013-06-13 14:57 ` Tony Lindgren
2013-06-13 15:52 ` Pavel Machek
2013-06-13 15:52 ` Pavel Machek
2013-06-13 16:14 ` Tony Lindgren
2013-06-13 16:14 ` Tony Lindgren
2013-06-13 23:08 ` Pavel Machek
2013-06-13 23:08 ` Pavel Machek
2013-06-14 5:56 ` Tony Lindgren
2013-06-14 5:56 ` Tony Lindgren
2013-06-14 21:28 ` Pavel Machek
2013-06-14 21:28 ` Pavel Machek
2013-06-17 11:10 ` Tony Lindgren
2013-06-17 11:10 ` Tony Lindgren
2013-06-27 12:12 ` N900 device tree conversion: next steps Pavel Machek
2013-07-01 14:03 ` [PATCH] N900: fix operation on emulator Pavel Machek
2013-07-01 14:03 ` Pavel Machek
2013-07-01 18:22 ` Sergei Shtylyov
2013-07-01 18:22 ` Sergei Shtylyov
2013-07-01 18:22 ` Sergei Shtylyov
2013-07-01 19:51 ` Pavel Machek
2013-07-01 19:51 ` Pavel Machek
2013-07-01 20:00 ` Sergei Shtylyov
2013-07-01 20:00 ` Sergei Shtylyov
2013-07-01 20:53 ` Pavel Machek
2013-07-01 20:53 ` Pavel Machek
2013-07-01 21:15 ` [PATCH] N900: enable N900-specific drivers even if device tree is enabled Pavel Machek
2013-07-01 21:15 ` Pavel Machek
2013-07-04 11:47 ` Tony Lindgren
2013-07-04 11:47 ` Tony Lindgren
2013-07-01 21:17 ` [PATCH] N900: add device tree Pavel Machek
2013-07-01 21:17 ` Pavel Machek
2013-07-04 17:19 ` Aaro Koskinen
2013-07-04 17:19 ` Aaro Koskinen
2013-07-04 20:21 ` Pavel Machek
2013-07-04 20:21 ` Pavel Machek
2013-07-04 20:32 ` Aaro Koskinen
2013-07-04 20:32 ` Aaro Koskinen
2013-07-13 12:17 ` [PATCH v2] " Pavel Machek
2013-07-13 12:17 ` Pavel Machek
2013-07-14 22:28 ` Aaro Koskinen
2013-07-14 22:28 ` Aaro Koskinen
2013-07-28 13:44 ` Pavel Machek
2013-07-28 13:44 ` Pavel Machek
2013-08-01 23:43 ` Pavel Machek
2013-08-01 23:43 ` Pavel Machek
2013-08-10 11:09 ` Pavel Machek
2013-08-10 11:09 ` Pavel Machek
2013-08-10 11:09 ` Pavel Machek
2013-08-10 11:27 ` [PATCH] ARM: dts: omap3 / n900 support, Benoit please take me (was Re: [PATCH v2] N900: add device tree) Pavel Machek
2013-08-10 11:27 ` Pavel Machek
2013-08-10 11:46 ` [PATCH v2] N900: add device tree Belisko Marek
2013-08-10 11:46 ` Belisko Marek
2013-08-10 20:29 ` Jiri Kosina
2013-08-10 20:29 ` Jiri Kosina
2013-08-11 0:55 ` OMAP device tree maintainance (was Re: [PATCH v2] N900: add device tree) Pavel Machek
2013-08-11 0:55 ` Pavel Machek
2013-08-11 11:50 ` [PATCH v2] N900: add device tree Javier Martinez Canillas
2013-08-11 11:50 ` Javier Martinez Canillas
2013-08-11 13:47 ` Pavel Machek
2013-08-11 13:47 ` Pavel Machek
2013-08-11 13:47 ` Pavel Machek
2013-08-12 7:37 ` Tony Lindgren
2013-08-12 7:37 ` Tony Lindgren
2013-08-12 7:36 ` Tony Lindgren
2013-08-12 7:36 ` Tony Lindgren
2013-08-11 15:02 ` Javier Martinez Canillas
2013-08-11 15:02 ` Javier Martinez Canillas
2013-08-13 10:50 ` Benoit Cousson
2013-08-13 10:50 ` Benoit Cousson
2013-08-13 13:36 ` [PATCH v3] " Pavel Machek
2013-08-13 13:36 ` Pavel Machek
2013-08-13 14:06 ` Benoit Cousson
2013-08-13 14:06 ` Benoit Cousson
2013-06-26 15:14 ` N900 device tree conversion: first step Pavel Machek
2013-07-19 18:14 ` N900 device tree conversion: how to do " Sebastian Reichel
2013-07-19 18:14 ` Sebastian Reichel
2013-07-19 18:14 ` Sebastian Reichel
2013-07-28 13:37 ` Pavel Machek
2013-07-28 13:37 ` Pavel Machek
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