linux-kernel - Re: questions about arm trustzone

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Date:	Mon, 24 Jan 2011 23:49:21 -0800
From:	David Brown <davidb@...eaurora.org>
To:	sen wang <wangchendu@...il.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: questions about arm trustzone

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

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Sent by an employee of the Qualcomm Innovation Center, Inc.
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