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powerpc/powernv: Add RTC and NVRAM support plus RTAS fallbacks
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 19 Sep 2011 17:45:01 +0000 (17:45 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 20 Sep 2011 06:09:57 +0000 (16:09 +1000)
Implements OPAL RTC and NVRAM support and wire all that up to
the powernv platform.

We use RTAS for RTC as a fallback if available. Using RTAS for nvram
is not supported yet, pending some rework/cleanup and generalization
of the pSeries & CHRP code. We also use RTAS fallbacks for power off
and reboot

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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