svn commit: r352313 - in head/sys: conf modules modules/opal_nvram powerpc/powernv

[Justin Hibbits]

On Fri, Sep 13, 2019, 22:30 Justin Hibbits <jhibbits at freebsd.org> wrote:

> Author: jhibbits
> Date: Sat Sep 14 03:30:34 2019
> New Revision: 352313
> URL: https://svnweb.freebsd.org/changeset/base/352313
>
> Log:
>   powerpc64/powernv: Add opal NVRAM driver for PowerNV systems
>
>   Add a very basic NVRAM driver for OPAL which can be used by the IBM
>   powerpc-utils nvram utility, not to be confused with the base nvram
> utility,
>   which only operates on powermac_nvram.
>
>   The IBM utility handles all partitions itself, treating the nvram device
> as
>   a plain store.
>
>   An alternative would be to manage partitions in the kernel, and augment
> the
>   base nvram utility to deal with different backing stores, but that
>   complicates the driver significantly.  Instead, present the same
> interface
>   IBM's utlity expects, and we get the usage for free.
>
>   Tested by:    bdragon
>

Differential revision: https://reviews.freebsd.org/D21631

>