[Cryptech Tech] Bus

[Joachim Strömbergson]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Aloha!

Linus Nordberg wrote:
> Do we still consider using more of a "peer to peer bus architecture"
> as discussed briefly in Sthlm-December? For isolation between blocks.
> Can we afford doing both?

The WB afaik does not have a simple switch fabric solution (but this
should be investigated. What we discussed was having DMA support with
multiple masters allowed to drive the bus. This is possible to do.

There are switch fabrics such as the ARM AMBA AXI bus:

https://en.wikipedia.org/wiki/Advanced_Microcontroller_Bus_Architecture

The verification of the system becomes harder with DMA units and switch
fabrics.

My feeling right now is that for first demonstrator we will not have
performance issues with WB.

- -- 
Med vänlig hälsning, Yours

Joachim Strömbergson - Alltid i harmonisk svängning.
========================================================================
 Joachim Strömbergson          Secworks AB          joachim at secworks.se
========================================================================
-----BEGIN PGP SIGNATURE-----
Version: GnuPG/MacGPG2 v2.0.22 (Darwin)
Comment: GPGTools - http://gpgtools.org
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAlLo9fAACgkQZoPr8HT30QGWvQCfVmbsqAiIWjqMLfLVU8rps8JA
nQoAoMmEaa7De+bDespHajlbASrDxCEa
=bkm5
-----END PGP SIGNATURE-----