From 3cc685fd3e851b1bd2b77690ee05ca7f6c5974f7 Mon Sep 17 00:00:00 2001 From: Marc Jones Date: Mon, 29 Dec 2014 21:31:44 -0700 Subject: rtc: Add an RTC API, and implement it for x86. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit This CL adds an API for RTC drivers, and implements its two functions, rtc_get and rtc_set, for x86's RTC. The function which resets the clock when the CMOS as lost state now uses the RTC driver instead of accessing the those registers directly. BUG=None TEST=Built and booted on Link with the event log code modified to use the RTC interface. Verified that the event times were accurate. BRANCH=nyan Original-Change-Id: Ifa807898e583254e57167fd44932ea86627a02ee Original-Signed-off-by: Gabe Black Original-Reviewed-on: https://chromium-review.googlesource.com/197795 Original-Reviewed-by: David Hendricks Original-Tested-by: Gabe Black Original-Commit-Queue: Gabe Black This is the first half of the patch. (cherry picked from commit 9e0fd75142d29afe34f6c6b9ce0099f478ca5a93) Signed-off-by: Marc Jones Change-Id: I159f9b4872a0bb932961b4168b180c087dfb1883 Reviewed-on: http://review.coreboot.org/7889 Tested-by: build bot (Jenkins) Reviewed-by: Edward O'Callaghan Reviewed-by: Kyösti Mälkki --- src/include/rtc.h | 37 +++++++++++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 src/include/rtc.h (limited to 'src/include/rtc.h') diff --git a/src/include/rtc.h b/src/include/rtc.h new file mode 100644 index 0000000000..ed32b6993b --- /dev/null +++ b/src/include/rtc.h @@ -0,0 +1,37 @@ +/* + * This file is part of the coreboot project. + * + * Copyright 2014 Google, Inc. + * + * 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 + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA + */ + +#ifndef _RTC_H_ +#define _RTC_H_ + +struct rtc_time +{ + int sec; + int min; + int hour; + int mday; + int mon; + int year; + int wday; +}; + +int rtc_set(const struct rtc_time *time, u8 has_century); +int rtc_get(struct rtc_time *time, u8 has_century); + +#endif /* _RTC_H_ */ -- cgit v1.2.3