2008-04-26 01:11:02 +02:00
|
|
|
/*
|
|
|
|
* This file is part of the libpayload project.
|
|
|
|
*
|
|
|
|
* Copyright (C) 2008 Advanced Micro Devices, Inc.
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions
|
|
|
|
* are met:
|
|
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer.
|
|
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
|
|
* documentation and/or other materials provided with the distribution.
|
|
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
|
|
* derived from this software without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
|
|
* SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
2008-08-11 18:55:35 +02:00
|
|
|
#include <config.h>
|
2008-04-26 01:11:02 +02:00
|
|
|
#include <libpayload.h>
|
|
|
|
#include <arch/rdtsc.h>
|
|
|
|
|
|
|
|
extern u32 cpu_khz;
|
|
|
|
|
|
|
|
static struct {
|
|
|
|
u64 ticks;
|
|
|
|
time_t secs;
|
|
|
|
suseconds_t usecs;
|
|
|
|
} clock;
|
|
|
|
|
|
|
|
#define TICKS_PER_SEC (cpu_khz * 1000)
|
|
|
|
#define TICKS_PER_USEC (cpu_khz / 1000)
|
|
|
|
|
|
|
|
static void update_clock(void)
|
|
|
|
{
|
|
|
|
u64 delta = rdtsc() - clock.ticks;
|
|
|
|
int secs;
|
|
|
|
|
|
|
|
clock.ticks += delta;
|
|
|
|
|
|
|
|
secs = (int) (delta / TICKS_PER_SEC);
|
|
|
|
clock.secs += secs;
|
|
|
|
delta -= (secs * TICKS_PER_SEC);
|
|
|
|
clock.usecs += (int) (delta / TICKS_PER_USEC);
|
|
|
|
|
|
|
|
if (clock.usecs > 1000000) {
|
|
|
|
clock.usecs -= 1000000;
|
|
|
|
clock.secs++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef CONFIG_NVRAM
|
|
|
|
|
|
|
|
static unsigned int day_of_year(int mon, int day, int year)
|
|
|
|
{
|
|
|
|
static u8 mdays[12] = { 31, 28, 31, 30, 31, 30,
|
|
|
|
31, 31, 30, 31, 30, 31 };
|
|
|
|
|
|
|
|
int i, ret = 0;
|
|
|
|
|
|
|
|
for(i = 0; i < mon; i++) {
|
|
|
|
ret += mdays[i];
|
|
|
|
|
|
|
|
if (i == 1 && (year % 4))
|
|
|
|
ret++;
|
|
|
|
}
|
|
|
|
|
|
|
|
return (ret + day);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void gettimeofday_init(void)
|
|
|
|
{
|
|
|
|
int days, delta;
|
|
|
|
struct tm tm;
|
|
|
|
|
|
|
|
rtc_read_clock(&tm);
|
|
|
|
clock.ticks = rdtsc();
|
|
|
|
|
|
|
|
/* Calculate the number of days in the year so far */
|
|
|
|
days = day_of_year(tm.tm_mon, tm.tm_mday, tm.tm_year + 1900);
|
|
|
|
|
|
|
|
delta = tm.tm_year - 70;
|
|
|
|
|
|
|
|
days += (delta * 365);
|
|
|
|
|
|
|
|
/* Figure leap years */
|
|
|
|
|
|
|
|
if (delta > 2)
|
|
|
|
days += (delta - 2) / 4;
|
|
|
|
|
|
|
|
clock.secs = (days * 86400) + (tm.tm_hour * 3600) +
|
|
|
|
(tm.tm_min * 60) + tm.tm_sec;
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
static void gettimeofday_init(void)
|
|
|
|
{
|
|
|
|
/* Record the number of ticks */
|
|
|
|
clock.ticks = rdtsc();
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
int gettimeofday(struct timeval *tv, void *tz)
|
|
|
|
{
|
|
|
|
/* Call the gtod init when we need it - this keeps
|
|
|
|
the code from being included in the binary if we don't
|
|
|
|
need it
|
|
|
|
*/
|
|
|
|
|
|
|
|
if (!clock.ticks)
|
|
|
|
gettimeofday_init();
|
|
|
|
|
|
|
|
update_clock();
|
|
|
|
|
|
|
|
tv->tv_sec = clock.secs;
|
|
|
|
tv->tv_usec = clock.usecs;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|