Hello,
I'm currently exploring arm trustzone with genode, I managed to run the example and run my own normal world linux kernel.
Is there a way to chain load normal world operating system, load another u-boot file in the normal world ? is there a technical problem doing so ?
Any input no the subject will be very helpful.
Thanks
Hi Ofer,
On 03/29/2015 09:04 AM, Ofer Hasson wrote:
Hello,
I'm currently exploring arm trustzone with genode, I managed to run the example and run my own normal world linux kernel.
Is there a way to chain load normal world operating system, load another u-boot file in the normal world ? is there a technical problem doing so ?
In general this is possible. However, as TrustZone is _no_ virtualization solution, it is not transparent to the non-secure guest that it runs in the "normal world". So it is likely that you need to first modify u-boot so it runs smoothly in the normal world. For instance you have to check that it does not touch memory it does not own, as well as devices. Moreover, u-boot should not try to access system registers (coprocessor 15) that are TrustZone sensitive, like SCR register.
Regards Stefan
Any input no the subject will be very helpful.
Thanks
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Thanks a lot !
On Mon, Mar 30, 2015 at 9:51 AM, Stefan Kalkowski < stefan.kalkowski@...1...> wrote:
Hi Ofer,
On 03/29/2015 09:04 AM, Ofer Hasson wrote:
Hello,
I'm currently exploring arm trustzone with genode, I managed to run the example and run my own normal world linux kernel.
Is there a way to chain load normal world operating system, load another u-boot file in the normal world ? is there a technical problem doing so ?
In general this is possible. However, as TrustZone is _no_ virtualization solution, it is not transparent to the non-secure guest that it runs in the "normal world". So it is likely that you need to first modify u-boot so it runs smoothly in the normal world. For instance you have to check that it does not touch memory it does not own, as well as devices. Moreover, u-boot should not try to access system registers (coprocessor 15) that are TrustZone sensitive, like SCR register.
Regards Stefan
Any input no the subject will be very helpful.
Thanks
Dive into the World of Parallel Programming The Go Parallel Website,
sponsored
by Intel and developed in partnership with Slashdot Media, is 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/
genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main
-- Stefan Kalkowski Genode Labs
http://www.genode-labs.com/ · http://genode.org/
Dive into the World of Parallel Programming The Go Parallel Website, sponsored by Intel and developed in partnership with Slashdot Media, is 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/ _______________________________________________ genode-main mailing list genode-main@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/genode-main
-
Ofer Hasson -
Stefan Kalkowski