From 2ae9d698882dd0ce899a0008d5d0526373af407a Mon Sep 17 00:00:00 2001
From: Matt DeVillier <matt.devillier@puri.sm>
Date: Tue, 11 Feb 2020 12:38:29 -0600
Subject: ec/purism/librem: Add ACPI temp reporting
Add EC ACPI reporting of current temp and platform critical temp.
Adapted from ACPI dump of ODM AMI firmware.
TEST: check reporting of current/critical temps via lm-sensors
from ACPI on Librem 13v1 and 13v4 boards.
Change-Id: I92641fbbdda46e0c388607a37f7a7cc2dcd6c26d
Signed-off-by: Matt DeVillier <matt.devillier@puri.sm>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38835
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
src/ec/purism/librem/acpi/ec.asl | 24 +++++++++++++++++++++++-
src/mainboard/purism/librem_bdw/acpi/ec.asl | 1 +
src/mainboard/purism/librem_skl/acpi/ec.asl | 1 +
3 files changed, 25 insertions(+), 1 deletion(-)
(limited to 'src')
diff --git a/src/ec/purism/librem/acpi/ec.asl b/src/ec/purism/librem/acpi/ec.asl
index ff325aa9a3..6f6ced1b5c 100644
--- a/src/ec/purism/librem/acpi/ec.asl
+++ b/src/ec/purism/librem/acpi/ec.asl
@@ -52,7 +52,9 @@ Device (EC)
OperationRegion (ERAM, EmbeddedControl, Zero, 0xFF)
Field (ERAM, ByteAcc, Lock, Preserve)
{
- Offset (0x15),
+ Offset (0x13),
+ RTMP, 8,
+ , 8,
BSTS, 2, /* Battery Status */
, 3,
BTEX, 1, /* Battery Present */
@@ -231,3 +233,23 @@ Device (EC)
#include "ac.asl"
#include "battery.asl"
}
+
+Scope (\_TZ)
+{
+ ThermalZone (TZ0)
+ {
+ /* _TMP: Temperature */
+ Method (_TMP, 0, Serialized)
+ {
+ Local0 = (0x0AAC + (\_SB.PCI0.LPCB.EC.RTMP * 0x0A))
+ Return (Local0)
+ }
+
+ /* _CRT: Critical Temperature */
+ Method (_CRT, 0, Serialized)
+ {
+ /* defined in board ec.asl */
+ Return (CRIT_TEMP)
+ }
+ }
+}
diff --git a/src/mainboard/purism/librem_bdw/acpi/ec.asl b/src/mainboard/purism/librem_bdw/acpi/ec.asl
index b2fa5b9924..a660a526f4 100644
--- a/src/mainboard/purism/librem_bdw/acpi/ec.asl
+++ b/src/mainboard/purism/librem_bdw/acpi/ec.asl
@@ -16,5 +16,6 @@
#define EC_SCI_GPI 10
#define PPCM_TURBO Zero
#define PPCM_NOTURBO One
+#define CRIT_TEMP 105
#include <ec/purism/librem/acpi/ec.asl>
diff --git a/src/mainboard/purism/librem_skl/acpi/ec.asl b/src/mainboard/purism/librem_skl/acpi/ec.asl
index c667b6c41b..c440ff87e4 100644
--- a/src/mainboard/purism/librem_skl/acpi/ec.asl
+++ b/src/mainboard/purism/librem_skl/acpi/ec.asl
@@ -16,5 +16,6 @@
#define EC_SCI_GPI 0x50
#define PPCM_TURBO One
#define PPCM_NOTURBO 0x02
+#define CRIT_TEMP 100
#include <ec/purism/librem/acpi/ec.asl>
--
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