board/w7o/post2.c

   1 /*
   2  * (C) Copyright 2001
   3  * Bill Hunter, Wave 7 Optics, williamhunter@mediaone.net
   4  *   and
   5  * Erik Theisen, Wave 7 Optics, etheisen@mindspring.com.
   6  *
   7  * SPDX-License-Identifier:     GPL-2.0+
   8  */
   9
  10 #include <common.h>
  11 #include <config.h>
  12 #include <rtc.h>
  13 #include "errors.h"
  14 #include "dtt.h"
  15
  16 /* for LM75 DTT POST test */
  17 #define DTT_READ_TEMP           0x0
  18 #define DTT_CONFIG              0x1
  19 #define DTT_TEMP_HYST           0x2
  20 #define DTT_TEMP_SET            0x3
  21
  22 #if defined(CONFIG_RTC_M48T35A)
  23 void rtctest(void)
  24 {
  25     volatile uchar *tchar = (uchar*)(CONFIG_SYS_NVRAM_BASE_ADDR + CONFIG_SYS_NVRAM_SIZE - 9);
  26     struct rtc_time tmp;
  27
  28     /* set up led code for RTC tests */
  29     log_stat(ERR_RTCG);
  30
  31     /*
  32      * Do RTC battery test. The first write after power up
  33      * fails if battery is low.
  34      */
  35     *tchar = 0xaa;
  36     if ((*tchar ^ 0xaa) != 0x0) log_warn(ERR_RTCBAT);
  37     *tchar = 0x55;                              /* Reset test address */
  38
  39     /*
  40      * Now lets check the validity of the values in the RTC.
  41      */
  42     rtc_get(&tmp);
  43     if ((tmp.tm_sec < 0)        | (tmp.tm_sec  > 59)   |
  44         (tmp.tm_min < 0)        | (tmp.tm_min  > 59)   |
  45         (tmp.tm_hour < 0)       | (tmp.tm_hour > 23)   |
  46         (tmp.tm_mday < 1 )      | (tmp.tm_mday > 31)   |
  47         (tmp.tm_mon < 1 )       | (tmp.tm_mon  > 12)   |
  48         (tmp.tm_year < 2000)    | (tmp.tm_year > 2500) |
  49         (tmp.tm_wday < 1 )      | (tmp.tm_wday > 7)) {
  50         log_warn(ERR_RTCTIM);
  51         rtc_reset();
  52     }
  53
  54     /*
  55      * Now lets do a check to see if the NV RAM is there.
  56      */
  57     *tchar = 0xaa;
  58     if ((*tchar ^ 0xaa) != 0x0) log_err(ERR_RTCVAL);
  59     *tchar = 0x55;                              /* Reset test address */
  60
  61 } /* rtctest() */
  62 #endif  /* CONFIG_RTC_M48T35A */
  63
  64
  65 #ifdef CONFIG_DTT_LM75
  66 int dtt_test(int sensor)
  67 {
  68     short temp, trip, hyst;
  69
  70     /* get values */
  71     temp = dtt_read(sensor, DTT_READ_TEMP) / 256;
  72     trip = dtt_read(sensor, DTT_TEMP_SET) / 256;
  73     hyst = dtt_read(sensor, DTT_TEMP_HYST) / 256;
  74
  75     /* check values */
  76     if ((hyst != (CONFIG_SYS_DTT_MAX_TEMP - CONFIG_SYS_DTT_HYSTERESIS)) ||
  77         (trip != CONFIG_SYS_DTT_MAX_TEMP) ||
  78         (temp < CONFIG_SYS_DTT_LOW_TEMP) || (temp > CONFIG_SYS_DTT_MAX_TEMP))
  79         return 1;
  80
  81     return 0;
  82 } /* dtt_test() */
  83 #endif /* CONFIG_DTT_LM75 */
  84
  85 /*****************************************/
  86
  87 void post2(void)
  88 {
  89 #if defined(CONFIG_RTC_M48T35A)
  90     rtctest();
  91 #endif  /* CONFIG_RTC_M48T35A */
  92
  93 #ifdef CONFIG_DTT_LM75
  94     log_stat(ERR_TempG);
  95     if(dtt_test(2) != 0) log_warn(ERR_Ttest0);
  96     if(dtt_test(4) != 0) log_warn(ERR_Ttest1);
  97 #endif /* CONFIG_DTT_LM75 */
  98 } /* post2() */