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>
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 749de00..77ebe50 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -430,6 +430,12 @@
extern void hvc_opal_init_early(void);
+struct rtc_time;
+extern int opal_set_rtc_time(struct rtc_time *tm);
+extern void opal_get_rtc_time(struct rtc_time *tm);
+extern unsigned long opal_get_boot_time(void);
+extern void opal_nvram_init(void);
+
#endif /* __ASSEMBLY__ */
#endif /* __OPAL_H */