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drivers/pc80/rtc/mc146818rtc.c: Reset RTC time on RTC power failure

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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>
This commit is contained in:
Frans Hendriks
2019-03-22 11:06:56 +01:00
committed by Nico Huber
parent d371cf3336
commit e75cb331df
1 changed files with 2 additions and 1 deletions
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3
src/drivers/pc80/rtc/mc146818rtc.c
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@@ -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",