linux-kernel - Re: questions about arm trustzone

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Message-ID: <AANLkTin9fSw5DdqdgCEvtdtc83LFOeA7t0OAUugVmRFD@mail.gmail.com>
Date:	Tue, 25 Jan 2011 17:19:16 +0800
From:	sen wang <wangchendu@...il.com>
To:	David Brown <davidb@...eaurora.org>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: questions about arm trustzone

thanks,
It seems linux run in the normal world, and the "scm.c"  is the path
to the monitor mode.
where can I find the example code for monitor and secure world?



2011/1/25 David Brown <davidb@...eaurora.org>:
> On Mon, Jan 24 2011, sen wang wrote:
>
>> we need to build a little os in the secure mode,and run linux in the
>> normal world.but, can I use gcc to compile the special instructions like 'smc'.
>> which gcc version can work? and where can i find the example code
>> switching between the secure and normal worlds?
>
> In the 2.6.38-rc2 kernel, arch/arm/mach-msm/scm.c does this.  I don't
> think there is any other code in the kernel, yet.
>
> David
>
> --
> Sent by an employee of the Qualcomm Innovation Center, Inc.
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum.
>
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