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| author | Nicholas Piggin <npiggin@gmail.com> | 2017-09-14 21:13:46 +1000 |
|---|---|---|
| committer | Stewart Smith <stewart@linux.vnet.ibm.com> | 2017-09-28 00:30:02 -0500 |
| commit | cca6c3408711a8971dfc8c3331d381741012775f (patch) | |
| tree | 77604854989d034b1a8991d455da5f80d3559b82 /core/init.c | |
| parent | ab101cb041a985f99c9e05977d4d43ad4baaeef8 (diff) | |
| download | skiboot-cca6c3408711a8971dfc8c3331d381741012775f.zip skiboot-cca6c3408711a8971dfc8c3331d381741012775f.tar.gz skiboot-cca6c3408711a8971dfc8c3331d381741012775f.tar.bz2 | |
cpu: idle POWER9 power management implementation
Add pm idle support to POWER9. IPIs are implemented with doorbells.
POWER9 can use the EC=ESL=0 (lite) stop when sreset is not available.
EC=ESL=1 state with RL=3 is enabled when we have a sreset wakeup.
Deep idle states are not implemented.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Stewart Smith <stewart@linux.vnet.ibm.com>
Diffstat (limited to 'core/init.c')
| -rw-r--r-- | core/init.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/core/init.c b/core/init.c index be49c3f..89a2758 100644 --- a/core/init.c +++ b/core/init.c @@ -928,6 +928,8 @@ void __noreturn __nomcount main_cpu_entry(const void *fdt) /* Initialize the rest of the cpu thread structs */ init_all_cpus(); + if (proc_gen == proc_gen_p9) + cpu_set_ipi_enable(true); /* Allocate our split trace buffers now. Depends add_opal_node() */ init_trace_buffers(); |