[Skiboot] [PATCH 1/2] opal-prd: Add get_prd_flags to host interfaces

[Jeremy Kerr]

Hi Dan,

>     /**
>      * @brief Query the HBRT host for a list of fixes
>      *
>      * There are times when workarounds need to be put into place to handle
>      * issues with the hosting layer (e.g. opal-prd) while fixes are not yet
>      * released.  This is especially true because of the disconnected
> release
>      * streams for the firmware and the hosting environment.
>      *
>      * @param  i_set Indicates which set of fixes we're checking
>      *               see HBRT_FIX_LIST_SET...
>      *
>      * @return a bitmask containing the relevant flags for the current
>      *         implementation, see HBRT_FIX_FLAGS_...
>      */
>     uint64_t (*get_fix_list)( uint64_t i_set );
> 
>     /* OPAL fixes */
>     #define HBRT_FIX_LIST_SET0_OPAL  0
>     #define HBRT_FIX_FLAGS_OPAL_HAS_XSCOM_RC  (1ul << 0)
> 
>     /* PHYP fixes */
>     #define HBRT_FIX_LIST_SET1_PHYP  1
> 
> If we run over 64 flags, we'd just make a HBRT_FIX_LIST_SET2_OPAL2  2, etc.

Yep, that makes sense. We'd just need to define the case where the 'set'
is unknown to opal-prd or pHyp. I'd propose just returning zero, as long
as we can ensure that zero-bit defaults will be acceptable in future.

Regards,


Jeremy