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
Signed-off-by: Rob Barnes <robbarnes@google.com>
Change-Id: Iafa642c1c50f9a0083a8e618e1eabec9a7ce39b4
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69391
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/ec/google/chromeec/acpi/ec.asl b/src/ec/google/chromeec/acpi/ec.asl
index 3200902..e4637b3 100644
--- a/src/ec/google/chromeec/acpi/ec.asl
+++ b/src/ec/google/chromeec/acpi/ec.asl
@@ -12,6 +12,8 @@
#define EC_OEM_VARIABLE_DATA_MASK 0x7
#define INT3400_ODVP_CHANGED 0x88
+#define ACPI_NOTIFY_CROS_EC_PANIC 0xB0
+
// Mainboard specific throttle handler
#ifdef DPTF_ENABLE_CHARGER
External (\_SB.DPTF.TCHG, DeviceObj)
@@ -409,6 +411,13 @@
\PNOT ()
}
+ // EC Panic
+ Method (_Q18, 0, NotSerialized)
+ {
+ Printf ("EC: PANIC")
+ Notify (CREC, ACPI_NOTIFY_CROS_EC_PANIC)
+ }
+
// MKBP interrupt.
Method (_Q1B, 0, NotSerialized)
{