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authorStefan Reinauer <reinauer@chromium.org>2014-01-13 17:40:37 -0800
committerPatrick Georgi <patrick@georgi-clan.de>2014-07-12 20:16:58 +0200
commit9b43edf36c8fabb63a1239849e7d2dc07bf3f2fb (patch)
tree1e8d18973e8bef7a64573957a3cac8f1f01a1ea4 /src/mainboard/google
parenta0819eb38d032bb0610ef024f97b5c15aea4d1b2 (diff)
google/panther: Avoid shutdown when thermal sensor is unavailable
When the thermal sensor on Panther is unavailable (early on resume) it will return 0x80 which causes our AML thermal code to overflow, which causes the system to shut down. Instead, return a reasonable value in those cases so that the system will continue running until the sensor gets back on its feet. BUG=chrome-os-partner:24918 BRANCH=panther TEST=suspend_resume_test survived more than 100 iterations on Panther Change-Id: Ib2d714c39d353ce2415361bc6590784a3f6837d2 Signed-off-by: Stefan Reinauer <reinauer@google.com> Signed-off-by: Stefan Reinauer <reinauer@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/182369 Tested-by: Stefan Reinauer <reinauer@chromium.org> Reviewed-by: Duncan Laurie <dlaurie@chromium.org> Commit-Queue: Stefan Reinauer <reinauer@chromium.org> Reviewed-on: http://review.coreboot.org/6002 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi <patrick@georgi-clan.de>
Diffstat (limited to 'src/mainboard/google')
-rw-r--r--src/mainboard/google/panther/acpi/thermal.asl5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/mainboard/google/panther/acpi/thermal.asl b/src/mainboard/google/panther/acpi/thermal.asl
index a6ea851bb5..e0ea2f5a4a 100644
--- a/src/mainboard/google/panther/acpi/thermal.asl
+++ b/src/mainboard/google/panther/acpi/thermal.asl
@@ -66,6 +66,11 @@ Scope (\_TZ)
// Get CPU Temperature from PECI via SuperIO TMPIN3
Store (\_SB.PCI0.LPCB.SIO.ENVC.TIN3, Local0)
+ // Check for "no reading available"
+ If (LEqual (Local0, 0x80)) {
+ Return (CTOK (\F2ON))
+ }
+
// Check for invalid readings
If (LOr (LEqual (Local0, 255), LEqual (Local0, 0))) {
Return (CTOK (\F2ON))