294 lines
6.8 KiB
C
294 lines
6.8 KiB
C
/*
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* (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
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*
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* Developed for DENX Software Engineering GmbH
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <post.h>
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#include <common.h>
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/*
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* SYSMON test
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*
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* This test performs the system hardware monitoring.
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* The test passes when all the following voltages and temperatures
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* are within allowed ranges:
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*
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* Temperature -40 .. +90 C
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* +5V +4.50 .. +5.50 V
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* +5V standby +3.50 .. +5.50 V
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*
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* LCD backlight is not enabled if temperature values are not within
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* allowed ranges (-30 .. + 80). The brightness of backlite can be
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* controlled by setting "brightness" enviroment variable. Default value is 50%
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*
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* See the list of all parameters in the sysmon_table below
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*/
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#include <post.h>
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#include <watchdog.h>
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#include <i2c.h>
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#if defined(CONFIG_VIDEO)
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#include <mb862xx.h>
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#endif
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#if CONFIG_POST & CONFIG_SYS_POST_SYSMON
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DECLARE_GLOBAL_DATA_PTR;
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/* from dspic.c */
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extern int dspic_read(ushort reg, ushort *data);
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#define REG_TEMPERATURE 0x12BC
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#define REG_VOLTAGE_5V 0x12CA
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#define REG_VOLTAGE_5V_STANDBY 0x12C6
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#define TEMPERATURE_MIN (-40) /* degr. C */
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#define TEMPERATURE_MAX (+90) /* degr. C */
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#define TEMPERATURE_DISPLAY_MIN (-35) /* degr. C */
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#define TEMPERATURE_DISPLAY_MAX (+85) /* degr. C */
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#define VOLTAGE_5V_MIN (+4500) /* mV */
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#define VOLTAGE_5V_MAX (+5500) /* mV */
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#define VOLTAGE_5V_STANDBY_MIN (+3500) /* mV */
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#define VOLTAGE_5V_STANDBY_MAX (+5500) /* mV */
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typedef struct sysmon_s sysmon_t;
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typedef struct sysmon_table_s sysmon_table_t;
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static void sysmon_dspic_init(sysmon_t *this);
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static int sysmon_dspic_read(sysmon_t *this, uint addr, int *val);
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static int sysmon_dspic_read_sgn(sysmon_t *this, uint addr, int *val);
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static void sysmon_backlight_disable(sysmon_table_t *this);
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struct sysmon_s {
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uchar chip;
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void (*init)(sysmon_t *);
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int (*read)(sysmon_t *, uint, int *);
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};
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static sysmon_t sysmon_dspic = {
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CONFIG_SYS_I2C_DSPIC_IO_ADDR,
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sysmon_dspic_init,
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sysmon_dspic_read
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};
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static sysmon_t sysmon_dspic_sgn = {
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CONFIG_SYS_I2C_DSPIC_IO_ADDR,
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sysmon_dspic_init,
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sysmon_dspic_read_sgn
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};
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static sysmon_t *sysmon_list[] = {
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&sysmon_dspic,
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NULL
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};
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struct sysmon_table_s {
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char *name;
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char *unit_name;
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sysmon_t *sysmon;
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void (*exec_before)(sysmon_table_t *);
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void (*exec_after)(sysmon_table_t *);
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int unit_precision;
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int unit_div;
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int unit_min;
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int unit_max;
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uint val_mask;
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uint val_min;
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uint val_max;
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int val_valid;
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uint val_min_alt;
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uint val_max_alt;
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int val_valid_alt;
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uint addr;
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};
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static sysmon_table_t sysmon_table[] = {
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{
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"Temperature", " C", &sysmon_dspic, NULL, sysmon_backlight_disable,
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1, 1, -32768, 32767, 0xFFFF,
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0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
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0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
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REG_TEMPERATURE,
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},
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{
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"+ 5 V", "V", &sysmon_dspic, NULL, NULL,
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100, 1000, -0x8000, 0x7FFF, 0xFFFF,
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0x8000 + VOLTAGE_5V_MIN, 0x8000 + VOLTAGE_5V_MAX, 0,
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0x8000 + VOLTAGE_5V_MIN, 0x8000 + VOLTAGE_5V_MAX, 0,
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REG_VOLTAGE_5V,
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},
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{
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"+ 5 V standby", "V", &sysmon_dspic, NULL, NULL,
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100, 1000, -0x8000, 0x7FFF, 0xFFFF,
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0x8000 + VOLTAGE_5V_STANDBY_MIN, 0x8000 + VOLTAGE_5V_STANDBY_MAX, 0,
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0x8000 + VOLTAGE_5V_STANDBY_MIN, 0x8000 + VOLTAGE_5V_STANDBY_MAX, 0,
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REG_VOLTAGE_5V_STANDBY,
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},
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{
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"Temperature", "°C", &sysmon_dspic_sgn, NULL, sysmon_backlight_disable,
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1, 1, -32768, 32767, 0xFFFF,
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0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
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0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
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REG_TEMPERATURE,
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},
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};
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int sysmon_init_f(void)
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{
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sysmon_t **l;
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for (l = sysmon_list; *l; l++)
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(*l)->init(*l);
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return 0;
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}
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void sysmon_reloc(void)
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{
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/* Do nothing for now, sysmon_reloc() is required by the sysmon post */
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}
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static char *sysmon_unit_value(sysmon_table_t *s, uint val)
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{
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static char buf[32];
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char *p, sign;
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int decimal, frac;
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int unit_val;
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unit_val = s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
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if (val == -1)
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return "I/O ERROR";
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if (unit_val < 0) {
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sign = '-';
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unit_val = -unit_val;
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} else {
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sign = '+';
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}
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p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
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frac = unit_val % s->unit_div;
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frac /= (s->unit_div / s->unit_precision);
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decimal = s->unit_precision;
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if (decimal != 1)
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*p++ = '.';
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for (decimal /= 10; decimal != 0; decimal /= 10)
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*p++ = '0' + (frac / decimal) % 10;
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strcpy(p, s->unit_name);
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return buf;
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}
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static void sysmon_dspic_init(sysmon_t *this)
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{
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}
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static int sysmon_dspic_read(sysmon_t *this, uint addr, int *val)
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{
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ushort data;
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if (dspic_read(addr, &data) == 0){
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/* To fit into the table range we should add 0x8000 */
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*val = data + 0x8000;
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return 0;
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}
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return -1;
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}
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static int sysmon_dspic_read_sgn(sysmon_t *this, uint addr, int *val)
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{
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ushort data;
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if (dspic_read(addr, &data) == 0){
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/* To fit into the table range we should add 0x8000 */
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*val = (signed short)data + 0x8000;
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return 0;
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}
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return -1;
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}
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static void sysmon_backlight_disable(sysmon_table_t *this)
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{
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#if defined(CONFIG_VIDEO)
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board_backlight_switch(this->val_valid_alt);
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#endif
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}
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int sysmon_post_test(int flags)
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{
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int res = 0;
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sysmon_table_t * t;
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int val;
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for (t = sysmon_table; t < sysmon_table + ARRAY_SIZE(sysmon_table); t++) {
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t->val_valid = 1;
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if (t->exec_before)
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t->exec_before(t);
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if (t->sysmon->read(t->sysmon, t->addr, &val) != 0) {
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t->val_valid = 0;
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t->val_valid_alt = 0;
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post_log(": read failed\n");
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res = 1;
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break;
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}
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if (t->val_valid != 0) {
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t->val_valid = val >= t->val_min && val <= t->val_max;
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t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
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}
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if (t->exec_after)
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t->exec_after(t);
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if ((!t->val_valid) || (flags)) {
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post_log("\n\t%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
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post_log("allowed range");
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post_log(" %-8s ..", sysmon_unit_value(t, t->val_min));
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post_log(" %-8s", sysmon_unit_value(t, t->val_max));
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post_log(" %s", t->val_valid ? "OK" : "FAIL");
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}
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if (!t->val_valid) {
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res = 1;
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break;
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}
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}
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post_log("\n");
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return res;
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}
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#endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */
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