questions about arm trustzone

sen wang wangchendu at
Tue Jan 25 04:19:16 EST 2011

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 at>:
> 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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