AMD has no plans to release PSP code

Re:AMD has no plans to release PSP code by suihkulokki on Wednesday July 19, 2017 @09:40AM (#14804172)

The hikey and hikey960 devboards let you build your own code to run in the trustzone - eg the boot chain isn't signed and secure. The trustzone and uefi implemention these boards use is also fully open source.

[ Parent | on HN ]

Re:AMD has no plans to release PSP code by qb45 on Wednesday July 19, 2017 @09:51AM (#14804251)

Maybe we should start with stating that the core of TZ is an execution mode of the ARM CPU privileged above the normal kernel mode, not a separate core running some obscure code. TZ can run any suitable hypervisor or just be left unused. It's nothing like the ME/PSP.

Still, some boards/devices may lock it down, for example by code signing.

[ Parent | on HN ]

Re:AMD has no plans to release PSP code by monocasa on Wednesday July 19, 2017 @02:07PM (#14806460)

I think it gets obfuscated due to the fact that about the only public information that AMD provides on the PSP is that it uses ARM Trustzone technology.

[ Parent | on HN ]