linux-kernel - Re: [PATCH 1/2] armv8: aarch32: Execute 32-bit Linux for LayerScape platforms

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Message-ID: <a2a4e3ce-8a69-58a5-7c56-ff5af9d47f95@arm.com>
Date:   Fri, 23 Sep 2016 14:42:07 +0100
From:   Sudeep Holla <sudeep.holla@....com>
To:     Stuart Yoder <stuart.yoder@....com>,
        Alison Wang <b18965@...escale.com>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        Fabio Estevam Estevam <fabio.estevam@....com>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Scott Wood <scott.wood@....com>, Leo Li <leoyang.li@....com>
Cc:     Robin Murphy <robin.murphy@....com>,
        Sudeep Holla <sudeep.holla@....com>,
        Jason Jin <jason.jin@....com>
Subject: Re: [PATCH 1/2] armv8: aarch32: Execute 32-bit Linux for LayerScape
 platforms



On 23/09/16 14:18, Robin Murphy wrote:
> On 23/09/16 14:13, Stuart Yoder wrote:
>>
>>

[...]

>>
>> Which arch/arm/mach-* platform are you using for Juno?
>
> I don't even know! :) I just start with a multi_v7_defconfig plus a few
> extra bits (LPAE, KVM, sil24, sky2, etc.) and it works. I guess it's the
> combination of mach-vexpress and mach-virt.
>

It should be matching "arm,vexpress" and just using mach-vexpress/v2m.c
as it's present as compatible in Juno DT but nothing else there.

mach-virt was deleted and we just have "Generic DT based system" in
arch/arm/kernel/devtree.c which IIUC doesn't require any compatible in
the DT. So dropping "arm,vexpress" will make it use "Generic DT based
system" I believe.

-- 
Regards,
Sudeep