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authorFrans Hendriks <fhendriks@eltan.com>2019-03-22 11:06:56 +0100
committerNico Huber <nico.h@gmx.de>2019-04-05 12:39:51 +0000
commite75cb331df508c98e87c9f407484667c90577e6a (patch)
tree6f3fc88b49918b8d50904dd8b9b31f7d0b454a87 /src/drivers/pc80/rtc/mc146818rtc.c
parentd371cf3336df96407e974f34e39451790a97809a (diff)
downloadcoreboot-e75cb331df508c98e87c9f407484667c90577e6a.tar.xz
drivers/pc80/rtc/mc146818rtc.c: Reset RTC time on RTC power failure
RTC time contains invalid values on system without RTC battery. Handle 'invalid' the same way as 'cmos_invalid'. This will reset CMOS date when calling function enables 'invalid'. BUG=N/A TEST=Portwell PQ-M107 booting Linux Embedded Change-Id: I5eae57d00f328400a8b03c28b7ecdbbc71522206 Signed-off-by: Frans Hendriks <fhendriks@eltan.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/29329 Reviewed-by: Nico Huber <nico.h@gmx.de> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Diffstat (limited to 'src/drivers/pc80/rtc/mc146818rtc.c')
-rw-r--r--src/drivers/pc80/rtc/mc146818rtc.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/drivers/pc80/rtc/mc146818rtc.c b/src/drivers/pc80/rtc/mc146818rtc.c
index c18f1e947b..99079b985e 100644
--- a/src/drivers/pc80/rtc/mc146818rtc.c
+++ b/src/drivers/pc80/rtc/mc146818rtc.c
@@ -3,6 +3,7 @@
*
* Copyright 2014 The Chromium OS Authors. All rights reserved.
* Copyright (C) 2015 Timothy Pearson <tpearson@raptorengineeringinc.com>, Raptor Engineering
+ * Copyright (C) 2018-2019 Eltan B.V.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
@@ -144,7 +145,7 @@ static bool __cmos_init(bool invalid)
cmos_write(0, i);
}
- if (cmos_invalid)
+ if (cmos_invalid || invalid)
cmos_reset_date();
printk(BIOS_WARNING, "RTC:%s%s%s%s\n",