• Locked Locked
  • Replies 2 replies
  • Subscribers 121 subscribers
  • Views 2682 views
  • Users 0 members are here
Options
Related
How was your experience today?
This discussion has been locked.
You can no longer post new replies to this discussion. If you have a question you can start a new discussion

I need some information about trustzone

partho paul
Offline
Note: This was originally posted on 19th July 2013 at http://forums.arm.com

Hello there everyone,
Greetings!

I am Partho Paul, from India, Chennai. and I am here for some information. And this also happens to be my first post in the arm.com forums.
And my english is broken with loads and loads of grammar and spelling mistakes. kindly forgive me of those errors.

I will not try to beat around the bush, but this is what I am trying to do and this is my plan.
I am planning to port coreboot (www.coreboot.org) to blackberry playbook, which is omap4430 HS device. Which i plan to showcase in the GSOC14.
I have gathered most of the info regarding how to xloader and u-boot and etc etc.

Now I have a little confusion. First off I need some information about jtag and how do I proceed. I think, I have found the jtag pin outs and this Sunday I will give a try with jtag.
So now here is my real question. can I program the trusted zone?

If I understand correctly then the volatile SRAM holds the UUID and RSA metadata and SHA256 sum.

Can someone point me where am I making a blunder and help me from not doing a suicidal blunder. What should be my proper approach?

The arm documents says using proper tools i can modify the secure areas but i want to know which proper tools.
I got a wiggler jtag and buspirate to do the debugging and now how do i proceed. this will be my first question.

And my second question will be, how do i reprogram the efuse. Because the arm documents said i can reprogram the efuse. and there are loads of information there like SPIDEN and SPNIDEN and SUIDEN and SUNIDEN. and there is this secure_boot_lock can be set to 0 = low and 1 = high.

How do i do it in real life?

Because too much information got me a little lost.

I am not doing this for financial gain because i wish to be in the GSOC 2014, since all my proposals till date been rejected. Can someone please help me?

thanks!
-paul
Parents
  • Offline
    Note: This was originally posted on 20th July 2013 at http://forums.arm.com

    There are many ways TrustZone can be used - it is really a pile of security building blocks which ARM's customers use to build custom security environments. The ARM documents you have found explain how the individual pieces work, and some possible configurations of them, but it is down to ARM's customers to build the production security environment.

    If you have a particular chipset in mind such as OMAP, I would check on the vendor forums; they are likely to have more data about how their actual system is built and configured.

    Sorry that's not more use!

    Iso


Reply
  • Offline
    Note: This was originally posted on 20th July 2013 at http://forums.arm.com

    There are many ways TrustZone can be used - it is really a pile of security building blocks which ARM's customers use to build custom security environments. The ARM documents you have found explain how the individual pieces work, and some possible configurations of them, but it is down to ARM's customers to build the production security environment.

    If you have a particular chipset in mind such as OMAP, I would check on the vendor forums; they are likely to have more data about how their actual system is built and configured.

    Sorry that's not more use!

    Iso


Children
No data