[Skiboot] [PATCH] Update default stop-state-disable mask to cut only stop11

Vaidyanathan Srinivasan svaidy at linux.vnet.ibm.com
Sat Apr 14 17:14:18 AEST 2018

Stability improvements in microcode for stop4/stop5 are
available in upstream hcode images. Stop4 and stop5 can
be safely enabled by default.

Use ~0xE0000000 to cut all but stop0,1,2 in case there
are any issues with stop4/5.

nvram -p ibm,skiboot --update-config opal-stop-state-disable-mask=0x1FFFFFFF

Signed-off-by: Vaidyanathan Srinivasan <svaidy at linux.vnet.ibm.com>
 hw/slw.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/hw/slw.c b/hw/slw.c
index 3f9abaad..5c389671 100644
--- a/hw/slw.c
+++ b/hw/slw.c
@@ -858,7 +858,7 @@ void add_cpu_idle_state_properties(void)
 	u64 *pm_ctrl_reg_val_buf;
 	u64 *pm_ctrl_reg_mask_buf;
 	u32 supported_states_mask;
-	u32 opal_disabled_states_mask = ~0xE0000000; /* all but stop0,1,2 */
+	u32 opal_disabled_states_mask = ~0xEC000000; /* all but stop11 */
 	const char* nvram_disable_str;
 	u32 nvram_disabled_states_mask = 0x00;
 	u32 stop_levels;

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