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elog: Use the RTC driver interface instead of reading CMOS directly.

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Use the RTC driver interface to find the timestamp for events instead of
reading the CMOS based RTC directly on x86 or punting on ARM. This makes
timestamps available on both architectures, assuming an RTC driver is
available.

BUG=None
TEST=Built and booted on nyan_big and link and verified that the timestamps
in the event log were accurate.
BRANCH=nyan

Change-Id: Id45da53bc7ddfac8dd0978e7f2a3b8bc2c7ea753
Signed-off-by: Gabe Black <gabeblack@google.com>
Reviewed-on: https://chromium-review.googlesource.com/197798
Reviewed-by: David Hendricks <dhendrix@chromium.org>
Tested-by: Gabe Black <gabeblack@chromium.org>
Commit-Queue: Gabe Black <gabeblack@chromium.org>
This commit is contained in:
Gabe Black 2014-04-30 21:41:23 -07:00 • committed by chrome-internal-fetch
commit 493b05e06d
1 changed files with 11 additions and 14 deletions
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25
src/drivers/elog/elog.c
View file

@ -25,6 +25,8 @@
#if CONFIG_ARCH_X86
#include <pc80/mc146818rtc.h>
#endif
#include <bcd.h>
#include <rtc.h>
#include <smbios.h>
#include <spi-generic.h>
#include <spi_flash.h>
@ -637,20 +639,15 @@ int elog_init(void)
*/
static void elog_fill_timestamp(struct event_header *event)
{
#if CONFIG_ARCH_X86
event->second = cmos_read(RTC_CLK_SECOND);
event->minute = cmos_read(RTC_CLK_MINUTE);
event->hour = cmos_read(RTC_CLK_HOUR);
event->day = cmos_read(RTC_CLK_DAYOFMONTH);
event->month = cmos_read(RTC_CLK_MONTH);
event->year = cmos_read(RTC_CLK_YEAR);
#else
/*
* FIXME: We need to abstract the CMOS stuff on non-x86 platforms.
* Until then, use bogus data here to force the values to 0.
*/
event->month = 0xff;
#endif
struct rtc_time time;
rtc_get(&time);
event->second = bin2bcd(time.sec);
event->minute = bin2bcd(time.min);
event->hour = bin2bcd(time.hour);
event->day = bin2bcd(time.mday);
event->month = bin2bcd(time.mon);
event->year = bin2bcd(time.year) & 0xff;
/* Basic sanity check of expected ranges */
if (event->month > 0x12 || event->day > 0x31 || event->hour > 0x23 ||