[coreboot-gerrit] [S] Change in coreboot[master]: google/chromeec: Add ACPI method for EC Panic

[Rob Barnes (Code Review)]

Rob Barnes has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/69391 )

Change subject: google/chromeec: Add ACPI method for EC Panic
......................................................................

google/chromeec: Add ACPI method for EC Panic

Add an ACPI method to handle EC_HOST_EVENT_PANIC (bit 24) events.

EC panic is not covered by the standard (0-F) ACPI notify values.
Arbitrarily choosing B0 notify, which is in the 84-BF device specific
ACPI notify range.

This will be a no-op until the kernel driver is also updated to handle
this event.

BUG=b:258195448
BRANCH=None
TEST=Observe event with modified cros_ec_lpc driver

Change-Id: Iafa642c1c50f9a0083a8e618e1eabec9a7ce39b4
---
M src/ec/google/chromeec/acpi/ec.asl
1 file changed, 29 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/91/69391/1

diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl
index 0914fdd..9a7c659 100644
--- a/src/ec/google/chromeec/acpi/ec.asl
+++ b/src/ec/google/chromeec/acpi/ec.asl
@@ -408,6 +408,13 @@
    	\PNOT ()
    }

+	// EC Panic
+	Method (_Q18, 0, NotSerialized)
+	{
+		Printf ("EC: PANIC")
+		Notify (CREC, 0xB0)
+	}
+
    // MKBP interrupt.
    Method (_Q1B, 0, NotSerialized)
    {