Commit Graph

5 Commits

Author SHA1 Message Date
Michael Neuling 035ed26fb0 powerpc/powernv: Check OPAL RTC calls exists before using
Check that the OPAL_RTC_READ token exists before we use the OPAL RTC.

Refactors the code a little to merge error paths.

This avoids littering the OPAL console with:
  "OPAL: Called with bad token 3".

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-25 23:14:35 +10:00
Michael Neuling 2c49195b6a powernv: Remove get/set_rtc_time when they are not present
Currently we continue to poll get/set_rtc_time even when we know they
are not working.

This changes it so that if it fails at boot time we remove the ppc_md
get/set_rtc_time hooks so that we don't end up polling known broken
calls.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-12-05 16:08:22 +11:00
Anton Blanchard 6feff6d4a5 powerpc/powernv: More little endian issues in OPAL RTC driver
Sparse caught an issue where opal_set_rtc_time was incorrectly
byteswapping. Also fix a number of sparse warnings.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-10-11 16:48:51 +11:00
Benjamin Herrenschmidt 46d319e5d8 powerpc/powernv: Fix endian issues in OPAL RTC driver
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2013-10-11 16:48:45 +11:00
Benjamin Herrenschmidt 628daa8d5a powerpc/powernv: Add RTC and NVRAM support plus RTAS fallbacks
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>
2011-09-20 16:09:57 +10:00