board/ge/common/ge_common.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2017 General Electric Company
   4  */
   5
   6 #include <common.h>
   7 #include <env.h>
   8 #include <i2c.h>
   9 #include <rtc.h>
  10
  11 void check_time(void)
  12 {
  13         int ret, i;
  14         struct rtc_time tm;
  15         u8 retry = 3;
  16
  17         unsigned int current_i2c_bus = i2c_get_bus_num();
  18
  19         ret = i2c_set_bus_num(CONFIG_SYS_RTC_BUS_NUM);
  20         if (ret < 0) {
  21                 env_set("rtc_status", "FAIL");
  22                 return;
  23         }
  24
  25         rtc_init();
  26
  27         for (i = 0; i < retry; i++) {
  28                 ret = rtc_get(&tm);
  29                 if (!ret || ret == -EINVAL)
  30                         break;
  31         }
  32
  33         if (!ret && tm.tm_year > 2037) {
  34                 tm.tm_sec  = 0;
  35                 tm.tm_min  = 0;
  36                 tm.tm_hour = 0;
  37                 tm.tm_mday = 1;
  38                 tm.tm_wday = 2;
  39                 tm.tm_mon  = 1;
  40                 tm.tm_year = 2036;
  41
  42                 for (i = 0; i < retry; i++) {
  43                         ret = rtc_set(&tm);
  44                         if (!ret)
  45                                 break;
  46                 }
  47
  48                 if (ret >= 0)
  49                         ret = 2038;
  50         }
  51
  52         if (ret < 0)
  53                 env_set("rtc_status", "FAIL");
  54         else if (ret == 2038)
  55                 env_set("rtc_status", "2038");
  56         else
  57                 env_set("rtc_status", "OK");
  58
  59         i2c_set_bus_num(current_i2c_bus);
  60 }
  61