Hello,
I have a question about how the tz_vmm protects the memory reserved to the "Secure World" in the case of the versatile express cortex a9 (vea9x4) implementation.
In the case of the imx53, I saw that the Multi-Master Multi Memory Interface (MI4F) controller is used to secure memory region reserved to the "Secure World".
According to the arm versatile express cortex a9 board, the Trustzone Address Space Controller (TZASC) is used, which is also the case on the i.MX6 board.
However, I didn't find out in the vea9x4 implementation how the memory region reserved to the "Secure World" is protected is by the TZASC?
In the i.mx53 implementation of tz_vmm , the secure memory space is explicitly specified at the creation of MI4F object.
Could someone give some explanation about this point.
Thanks very much in advance.
best regards, Mahdi
On Fri, Jan 9, 2015 at 12:27 PM, Mahdi Aichouch <foxmehdi@...9...> wrote:
Ah, yes thank you very much ! You're right I was on the wrong branch.
On Fri, Jan 9, 2015 at 12:14 PM, Stefan Kalkowski < stefan.kalkowski@...1...> wrote:
Hello,
On 01/09/2015 10:51 AM, Mahdi Aichouch wrote:
Hello,
Thank you very much for your helpful answers.
However, I checked the repository https://bitbucket.org/casl/secureos, but I did not find a support of trustzone on the imx6 platform based on neither older or recent version of genode.
Maybe you didn't checked the right branch?
At least I can see TrustZone related code for i.MX6 in this branch of the same repository:
https://bitbucket.org/casl/secureos/src/e79eef4169050c321aaff38c59e429e2e88f...
Regards Stefan
kindest regards, Mahdi
On Fri, Jan 9, 2015 at 2:02 AM, Madhu (Macaque Labs) <madhu@...275... mailto:madhu@...275...> wrote:
I thought we were ! If it is not happening, I will make sure we do so from today. On Fri, Jan 9, 2015 at 1:00 AM, Christian Helmuth <christian.helmuth@...1... <mailto:christian.helmuth@...1...>> wrote: Hello, On Thu, Jan 08, 2015 at 07:17:32PM +0100, Stefan Kalkowskiwrote:
> Alternatively, maybe Chirag Garg and the IIT Madras Rise Lablike to
> share their work on i.MX6 platform with you, or respectivelythe public
> in general? AFAIK they already ported that work to the recentGenode
> release. IIRC IIT Madras shares its work at Bitbucket https://bitbucket.org/casl/secureos Unfortunately, they don't preserve Genode commit history fromwhat I
understand after a quick look. Regards -- Christian Helmuth Genode Labs http://www.genode-labs.com/ · http://genode.org/ https://twitter.com/GenodeLabs · /ˈdʒiː.nəʊd/ Genode Labs GmbH · Amtsgericht Dresden · HRB 28424 · SitzDresden
Geschäftsführer: Dr.-Ing. Norman Feske, Christian Helmuth
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your
hub for all things parallel software development, from weekly thought leadership blogs to news, videos, case studies, tutorials and more.
Take a
look and join the conversation now. http://goparallel.sourceforge.net
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-- Stefan Kalkowski Genode Labs
http://www.genode-labs.com/ · http://genode.org/
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