mirror of
https://github.com/brain-hackers/u-boot-brain
synced 2024-08-03 00:33:45 +09:00
b186cfa1a3
Pass rtc_status via the device tree, instead of on kernel command line. Additionally, the 2038 mitigation is reported, if applied successfully. Signed-off-by: Ian Ray <ian.ray@ge.com> Signed-off-by: Robert Beckett <bob.beckett@collabora.com>
62 lines
970 B
C
62 lines
970 B
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* Copyright 2017 General Electric Company
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <env.h>
|
|
#include <i2c.h>
|
|
#include <rtc.h>
|
|
|
|
void check_time(void)
|
|
{
|
|
int ret, i;
|
|
struct rtc_time tm;
|
|
u8 retry = 3;
|
|
|
|
unsigned int current_i2c_bus = i2c_get_bus_num();
|
|
|
|
ret = i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
|
|
if (ret < 0) {
|
|
env_set("rtc_status", "FAIL");
|
|
return;
|
|
}
|
|
|
|
rtc_init();
|
|
|
|
for (i = 0; i < retry; i++) {
|
|
ret = rtc_get(&tm);
|
|
if (!ret || ret == -EINVAL)
|
|
break;
|
|
}
|
|
|
|
if (!ret && tm.tm_year > 2037) {
|
|
tm.tm_sec = 0;
|
|
tm.tm_min = 0;
|
|
tm.tm_hour = 0;
|
|
tm.tm_mday = 1;
|
|
tm.tm_wday = 2;
|
|
tm.tm_mon = 1;
|
|
tm.tm_year = 2036;
|
|
|
|
for (i = 0; i < retry; i++) {
|
|
ret = rtc_set(&tm);
|
|
if (!ret)
|
|
break;
|
|
}
|
|
|
|
if (ret >= 0)
|
|
ret = 2038;
|
|
}
|
|
|
|
if (ret < 0)
|
|
env_set("rtc_status", "FAIL");
|
|
else if (ret == 2038)
|
|
env_set("rtc_status", "2038");
|
|
else
|
|
env_set("rtc_status", "OK");
|
|
|
|
i2c_set_bus_num(current_i2c_bus);
|
|
}
|
|
|