LXR uboot/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 * See file CREDITS for list of people who contributed to this
   8 * project.
   9 *
  10 * This program is free software; you can redistribute it and/or
  11 * modify it under the terms of the GNU General Public License as
  12 * published by the Free Software Foundation; either version 2 of
  13 * the License, or (at your option) any later version.
  14 *
  15 * This program is distributed in the hope that it will be useful,
  16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 * GNU General Public License for more details.
  19 *
  20 * You should have received a copy of the GNU General Public License
  21 * along with this program; if not, write to the Free Software
  22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23 * MA 02111-1307 USA
  24 */
  25
  26#include <common.h>
  27#include <config.h>
  28#include <rtc.h>
  29#include "errors.h"
  30#include "dtt.h"
  31
  32/* for LM75 DTT POST test */
  33#define DTT_READ_TEMP           0x0
  34#define DTT_CONFIG              0x1
  35#define DTT_TEMP_HYST           0x2
  36#define DTT_TEMP_SET            0x3
  37
  38#if defined(CONFIG_RTC_M48T35A)
  39void rtctest(void)
  40{
  41    volatile uchar *tchar = (uchar*)(CONFIG_SYS_NVRAM_BASE_ADDR + CONFIG_SYS_NVRAM_SIZE - 9);
  42    struct rtc_time tmp;
  43
  44    /* set up led code for RTC tests */
  45    log_stat(ERR_RTCG);
  46
  47    /*
  48     * Do RTC battery test. The first write after power up
  49     * fails if battery is low.
  50     */
  51    *tchar = 0xaa;
  52    if ((*tchar ^ 0xaa) != 0x0) log_warn(ERR_RTCBAT);
  53    *tchar = 0x55;                              /* Reset test address */
  54
  55    /*
  56     * Now lets check the validity of the values in the RTC.
  57     */
  58    rtc_get(&tmp);
  59    if ((tmp.tm_sec < 0)        | (tmp.tm_sec  > 59)   |
  60        (tmp.tm_min < 0)        | (tmp.tm_min  > 59)   |
  61        (tmp.tm_hour < 0)       | (tmp.tm_hour > 23)   |
  62        (tmp.tm_mday < 1 )      | (tmp.tm_mday > 31)   |
  63        (tmp.tm_mon < 1 )       | (tmp.tm_mon  > 12)   |
  64        (tmp.tm_year < 2000)    | (tmp.tm_year > 2500) |
  65        (tmp.tm_wday < 1 )      | (tmp.tm_wday > 7)) {
  66        log_warn(ERR_RTCTIM);
  67        rtc_reset();
  68    }
  69
  70    /*
  71     * Now lets do a check to see if the NV RAM is there.
  72     */
  73    *tchar = 0xaa;
  74    if ((*tchar ^ 0xaa) != 0x0) log_err(ERR_RTCVAL);
  75    *tchar = 0x55;                              /* Reset test address */
  76
  77} /* rtctest() */
  78#endif  /* CONFIG_RTC_M48T35A */
  79
  80
  81#ifdef CONFIG_DTT_LM75
  82int dtt_test(int sensor)
  83{
  84    short temp, trip, hyst;
  85
  86    /* get values */
  87    temp = dtt_read(sensor, DTT_READ_TEMP) / 256;
  88    trip = dtt_read(sensor, DTT_TEMP_SET) / 256;
  89    hyst = dtt_read(sensor, DTT_TEMP_HYST) / 256;
  90
  91    /* check values */
  92    if ((hyst != (CONFIG_SYS_DTT_MAX_TEMP - CONFIG_SYS_DTT_HYSTERESIS)) ||
  93        (trip != CONFIG_SYS_DTT_MAX_TEMP) ||
  94        (temp < CONFIG_SYS_DTT_LOW_TEMP) || (temp > CONFIG_SYS_DTT_MAX_TEMP))
  95        return 1;
  96
  97    return 0;
  98} /* dtt_test() */
  99#endif /* CONFIG_DTT_LM75 */
 100
 101/*****************************************/
 102
 103void post2(void)
 104{
 105#if defined(CONFIG_RTC_M48T35A)
 106    rtctest();
 107#endif  /* CONFIG_RTC_M48T35A */
 108
 109#ifdef CONFIG_DTT_LM75
 110    log_stat(ERR_TempG);
 111    if(dtt_test(2) != 0) log_warn(ERR_Ttest0);
 112    if(dtt_test(4) != 0) log_warn(ERR_Ttest1);
 113#endif /* CONFIG_DTT_LM75 */
 114} /* post2() */
 115