[Skiboot] [PATCH RFC hostboot] bootconfig: Describe pnor boot flags

Stewart Smith stewart at linux.ibm.com
Tue Jun 19 13:08:13 AEST 2018

Joel Stanley <joel at jms.id.au> writes:
> The reserved boot flag is now used by a BMC to signal to the host
> firmware that it supports the mbox protocol[1].
> Currently this has no affect on Hostboot, but in the future it will be
> used by skiboot.  In the future hostboot could chose to use the mbox
> protocol to read and write PNOR.
> [1] github.com/openbmc/mboxbridge/blob/master/Documentation/mbox_protocol.md
> Change-Id: I51bc7878eabc975954371ada838d0a348b12ef9d
> Signed-off-by: Joel Stanley <joel.stanley at au1.ibm.com>
> ---
> This patch is for hostboot, but we will have to interpret these flags in
> skiboot, so I'm asking for some review here in parallel to submitting it
> to the hostboot review process.
> Note that this is for the P8 branch only; the P9 version of hostboot
> uses mbox unconditionally.

This looks good to me, any traction on the hostboot side of things?

Stewart Smith
OPAL Architect, IBM.

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