openbmc Digest, Vol 32, Issue 32

[Andrew Jeffery]

Hi Haiyue,

On Thu, 12 Apr 2018, at 17:25, Wang, Haiyue wrote:
> Hi Andrew,
> 
> Facebook uses the 'devmem' utility and python script to implement the 
> soc register
> 
> read and write in a simple way. And the yocto layer is also very clear 
> like different
> 
> chip vendor and common parts.
> 
> 
> Kernel device tree upstream is also very slow, we needs two parts 
> (device tree + user app)
> 
> to finish the soc setting. But Facebook just uses user app, this 
> development is fast, and
> 
> simple is the best.
> 
> 
> Well, just for sharing what I found, I may misunderstood the BIG idea 
> after this kernel
> 
> patch design. :-)

Ben's covered the main points, but yes, what was implicit was we're looking to improve the security of the BMC. I'll try to make sure I'm more explicit in the future.

Cheers,

Andrew