[Skiboot] [PATCH] p9dsu: detect p9dsu variant even when hostboot doesn't tell us

Stewart Smith stewart at linux.ibm.com
Mon Apr 30 17:38:13 AEST 2018

Stewart Smith <stewart at linux.ibm.com> writes:
> The SuperMicro BMC can tell us what riser type we have, which dictates
> the PCI slot tables. Usually, in an environment that a customer would
> experience, Hostboot will do the query with an SMC specific patch
> (not upstream as there's no platform specific code in hostboot)
> and skiboot knows what variant it is based on the compatible string.
> However, if you're using upstream hostboot, you only get the bare
> 'p9dsu' compatible type. We can work around this by asking the BMC
> ourselves and setting the slot table appropriately. We do this
> syncronously in platform init so that we don't start probing
> PCI before we setup the slot table.
> This adds a bit of funky logic in the p9dsu platform file, but on
> the whole makes things simpler.
> Signed-off-by: Stewart Smith <stewart at linux.ibm.com>
> ---
>  platforms/astbmc/p9dsu.c | 148 +++++++++++++++++++++++++----------------------
>  1 file changed, 80 insertions(+), 68 deletions(-)

Merged to master as of d32ddea94ba6299a28649a40ccff53c4a4176eb3

Stewart Smith
OPAL Architect, IBM.

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