Aaron Durbin (adurbin@google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/4972
-gerrit
commit 7afb088cd94dd538dc77fbe66b327addf627096d Author: Aaron Durbin adurbin@chromium.org Date: Thu Nov 14 11:06:17 2013 -0600
baytrail: don't allow PCIE wake ups
The PCIe subsystem was constantly waking up boards from S3 and S5. Completely disable PCIe wake ups. It can be made mainboard-configurable later if needed.
BUG=chrome-os-partner:24004 BRANCH=None TEST=Both S3 and EC RW->RW update (trip through S5) don't cause wakeups.
Change-Id: I922e2947c4b6e29277d913f06192601a2954f8fe Signed-off-by: Aaron Durbin adurbin@chromium.org Reviewed-on: https://chromium-review.googlesource.com/176791 Reviewed-by: Shawn Nematbakhsh shawnn@chromium.org --- src/soc/intel/baytrail/smm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/soc/intel/baytrail/smm.c b/src/soc/intel/baytrail/smm.c index c654c85..e10c70b 100644 --- a/src/soc/intel/baytrail/smm.c +++ b/src/soc/intel/baytrail/smm.c @@ -93,8 +93,8 @@ void southcluster_smm_enable_smi(void) {
printk(BIOS_DEBUG, "Enabling SMIs.\n"); - /* Configure events */ - enable_pm1(PWRBTN_EN | GBL_EN); + /* Configure events Disable pcie wake. */ + enable_pm1(PWRBTN_EN | GBL_EN | PCIEXPWAK_DIS); disable_gpe(PME_B0_EN);
/* Set up the GPIO route. */