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Subject: Re: [Qemu-devel] Running linux on qemu omap
To:     Thomas Huth <thuth@redhat.com>,
        Aaro Koskinen <aaro.koskinen@iki.fi>,
        Corentin Labbe <clabbe.montjoie@gmail.com>
Cc:     Tony Lindgren <tony@atomide.com>, linux-omap@vger.kernel.org,
        qemu-devel@nongnu.org, linux-kernel@vger.kernel.org,
        Peter Maydell <peter.maydell@linaro.org>
References: <20190520190533.GA28160@Red>
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 <20190522181904.GE3621@darkstar.musicnaut.iki.fi>
 <8977e2bb-8d9e-f4fd-4c44-b4f67e0e7314@redhat.com>
From:   =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= <philmd@redhat.com>
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Date:   Thu, 23 May 2019 14:00:41 +0200
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From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= <philmd@redhat.com>
To: Thomas Huth <thuth@redhat.com>, Aaro Koskinen <aaro.koskinen@iki.fi>,
 Corentin Labbe <clabbe.montjoie@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>, linux-omap@vger.kernel.org,
 qemu-devel@nongnu.org, linux-kernel@vger.kernel.org,
 Peter Maydell <peter.maydell@linaro.org>
Message-ID: <c2972889-fe60-7614-fb6e-e57ddf780a54@redhat.com>
Subject: Re: [Qemu-devel] Running linux on qemu omap
References: <20190520190533.GA28160@Red>
 <20190521232323.GD3621@darkstar.musicnaut.iki.fi>
 <20190522093341.GA32154@Red>
 <20190522181904.GE3621@darkstar.musicnaut.iki.fi>
 <8977e2bb-8d9e-f4fd-4c44-b4f67e0e7314@redhat.com>
In-Reply-To: <8977e2bb-8d9e-f4fd-4c44-b4f67e0e7314@redhat.com>

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On 5/23/19 1:27 PM, Thomas Huth wrote:
> On 22/05/2019 20.19, Aaro Koskinen wrote:
>> Hi,
>>
>> On Wed, May 22, 2019 at 11:33:41AM +0200, Corentin Labbe wrote:
>>> qemu-system-arm -M help |grep OMAP
>>> cheetah              Palm Tungsten|E aka. Cheetah PDA (OMAP310)
>>> n800                 Nokia N800 tablet aka. RX-34 (OMAP2420)
>>> n810                 Nokia N810 tablet aka. RX-44 (OMAP2420)
>>> sx1                  Siemens SX1 (OMAP310) V2
>>> sx1-v1               Siemens SX1 (OMAP310) V1
>>>
>>>>> The maximum I can get with omap1_defconfig is
>>>>> qemu-system-arm -kernel zImage -nographic -machine cheetah -append =
'root=3D/dev/ram0 console=3DttyO0'
>>>>> Uncompressing Linux... done, booting the kernel.
>>>>> then nothing more.
>>
>> With N800/N810 omap2plus_defconfig should be used instead. However,
>> I don't think that works either (but haven't tried recently). Also wit=
h
>> N800/N810 you need to append the DTB file to the kernel image.
>=20
> FWIW, Philippe recently posted a mail how to run older kernels on n810:=

>=20
> https://www.mail-archive.com/qemu-devel@nongnu.org/msg610653.html

What I use as reference for testing ARM boards [*] is the work of
Guenter Roeck:
https://github.com/groeck/linux-build-test/blob/master/rootfs/arm/run-qem=
u-arm.sh

However I can see than none of the board listed by Corentin are tested
=2E.. That reminder me I never succeed at using the Cheetah PDA. So the
OMAP310 is probably bitroting in QEMU...

[*] and slowly add to upstream patches he sent that fell through the
cracks of qemu-devel.

Regards,

Phil.


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