[coreboot-gerrit] Change in coreboot[master]: superio/smsc/sch5545: Clear PMEs in the early init

[Michał Żygowski (Code Review)]

Attention is currently required from: Michał Żygowski.
Hello build bot (Jenkins), Angel Pons, Felix Held,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/59524

to look at the new patch set (#4).

Change subject: superio/smsc/sch5545: Clear PMEs in the early init
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superio/smsc/sch5545: Clear PMEs in the early init

Disable PMEs and clear global PME status to avoid undesired wakeups
or hangs in later stages. These bits are set by OS via ACPI can survive
S5 state so it is necessary to set them back to defaults after an
ungraceful shutdown.

TEST=Dell OptiPlex 9010 does not hang anymore after ungraceful shutdown
when configuring GPE0_EN register in southbridge LPC init

Signed-off-by: Michał Żygowski 
Change-Id: I790cac3ce1101565b64ed54d9c6b50f5e9aa4cf6
---
M src/superio/smsc/sch5545/sch5545_early_init.c
1 file changed, 7 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/24/59524/4