[Skiboot] skiboot v5.11

[Stewart Smith]

Andrew Jeffery <andrew at aj.id.au> writes:
>> * mbox: Harden against BMC daemon errors
>> 
>>   Bugs present in the BMC daemon mean that skiboot gets presented with
>>   mbox windows of size zero. These windows cannot be valid and skiboot
>>   already detects these conditions.
>
> I'm a bit late to the scene here, but all the same I thought it would be worth noting:
>
> This bug was only present on systems whose BMC uses the "virtual pnor" feature of its mboxd implementation. At this point in time, the only platform that does so is Witherspoon. Whilst the skiboot work-around is required to handle older BMC firmware releases, more recent releases[1] will no-longer present this problem and the host is able to read its entire firmware flash device without error.
>
> [1] OpenBMC-based systems with this issue are fixed on the BMC side as
> of openbmc/openbmc at a7609b8136e3234ac36d983cf25c34508fbb5939

Thanks for your work on getting that done too, I only wish it was done
when vpnor first came in rather than having six months of horribly
failing tests.

-- 
Stewart Smith
OPAL Architect, IBM.