Root [q] Bootoader enable HVP cpu mode Nexus 10

[bramone]

Hi,
I would like to have some informations about the Google Nexus 10 Bootloader (and more generally all google device bootloader). Is it possible to reverse-engineering and modify some opcode, or it's signed by the hardware device like the samsung device (I9100 bootloader & co) ? OR is it a way to put my own bootloader based on Das U-Boot on the device ?
The goal is to turn on some CPU mode (hypervisor) to run the kernel in a special mode for virtualization purpose.
Is it sbl.bin who setup CPU mode for the kernel ?
Is bootloader wrapper or 'trampoline like' (which is called by the real bootloader, and will call the kernel with some additional cpu options) is a viable solution ? [1][2]
The cpu load the kernel in a non-secure SVC mode or secure SVC mode ?

[1] http://wiki.xen.org/wiki/Xen_ARM_with_Virtualization_Extensions/FastModels
[2] http://github.com/virtualopensystems/boot-wrapper
[3] www.xenproject.org/presentations-and-videos/video/xpds13v-dual-android.html I want to do something like this!
[4] http://events.linuxfoundation.org/sites/events/files/slides/SRUK_Xen_Presentation_2013_v7.pdf
Thanks for your help!

 

[bramone]

Anyone ?

Is the Samsung guys from [3] has the right the change (and sign) the bootloader to enable HYP-mode, or did they find another way to do this ?

Thanks for any suggestions!