6b13f685e
 김민수
BSP 최초 추가
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#include <common.h>
#include <post.h>
#include <rtc.h>
#if CONFIG_POST & CONFIG_SYS_POST_RTC
static int rtc_post_skip (ulong * diff)
{
struct rtc_time tm1;
struct rtc_time tm2;
ulong start1;
ulong start2;
rtc_get (&tm1);
start1 = get_timer (0);
while (1) {
rtc_get (&tm2);
start2 = get_timer (0);
if (tm1.tm_sec != tm2.tm_sec)
break;
if (start2 - start1 > 1500)
break;
}
if (tm1.tm_sec != tm2.tm_sec) {
*diff = start2 - start1;
return 0;
} else {
return -1;
}
}
static void rtc_post_restore (struct rtc_time *tm, unsigned int sec)
{
time_t t = mktime (tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_hour,
tm->tm_min, tm->tm_sec) + sec;
struct rtc_time ntm;
to_tm (t, &ntm);
rtc_set (&ntm);
}
int rtc_post_test (int flags)
{
ulong diff;
unsigned int i;
struct rtc_time svtm;
static unsigned int daysnl[] =
{ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
static unsigned int daysl[] =
{ 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };
unsigned int ynl = 1999;
unsigned int yl = 2000;
unsigned int skipped = 0;
int reliable;
reliable = rtc_get (&svtm);
if (rtc_post_skip (&diff) != 0) {
post_log ("Timeout while waiting for a new second !
");
return -1;
}
for (i = 0; i < 5; i++) {
if (rtc_post_skip (&diff) != 0) {
post_log ("Timeout while waiting for a new second !
");
return -1;
}
if (diff < 950 || diff > 1050) {
post_log ("Invalid second duration !
");
return -1;
}
}
if (rtc_post_skip (&diff) != 0) {
post_log ("Timeout while waiting for a new second !
");
return -1;
}
rtc_get (&svtm);
for (i = 0; i < 12; i++) {
time_t t = mktime (ynl, i + 1, daysnl[i], 23, 59, 59);
struct rtc_time tm;
to_tm (t, &tm);
rtc_set (&tm);
skipped++;
if (rtc_post_skip (&diff) != 0) {
rtc_post_restore (&svtm, skipped);
post_log ("Timeout while waiting for a new second !
");
return -1;
}
rtc_get (&tm);
if (tm.tm_mon == i + 1) {
rtc_post_restore (&svtm, skipped);
post_log ("Month %d boundary is not passed !
", i + 1);
return -1;
}
}
for (i = 0; i < 12; i++) {
time_t t = mktime (yl, i + 1, daysl[i], 23, 59, 59);
struct rtc_time tm;
to_tm (t, &tm);
rtc_set (&tm);
skipped++;
if (rtc_post_skip (&diff) != 0) {
rtc_post_restore (&svtm, skipped);
post_log ("Timeout while waiting for a new second !
");
return -1;
}
rtc_get (&tm);
if (tm.tm_mon == i + 1) {
rtc_post_restore (&svtm, skipped);
post_log ("Month %d boundary is not passed !
", i + 1);
return -1;
}
}
rtc_post_restore (&svtm, skipped);
if (reliable < 0) {
post_log ("RTC Time is not reliable! Power fault?
");
return -1;
}
return 0;
}
#endif /* CONFIG_POST & CONFIG_SYS_POST_RTC */
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