2 * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
4 * Developed for DENX Software Engineering GmbH
6 * See file CREDITS for list of people who contributed to this
9 * This program is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU General Public License as
11 * published by the Free Software Foundation; either version 2 of
12 * the License, or (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
31 * This test performs the system hardware monitoring.
32 * The test passes when all the following voltages and temperatures
33 * are within allowed ranges:
35 * Temperature -40 .. +90 C
36 * +5V +4.50 .. +5.50 V
37 * +5V standby +3.50 .. +5.50 V
39 * LCD backlight is not enabled if temperature values are not within
40 * allowed ranges (-30 .. + 80). The brightness of backlite can be
41 * controlled by setting "brightness" enviroment variable. Default value is 50%
43 * See the list of all parameters in the sysmon_table below
50 #if defined(CONFIG_VIDEO)
54 #if CONFIG_POST & CFG_POST_SYSMON
56 DECLARE_GLOBAL_DATA_PTR;
59 extern int dspic_read(ushort reg);
61 #define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off)
63 #define REG_TEMPERATURE 0x12BC
64 #define REG_VOLTAGE_5V 0x12CA
65 #define REG_VOLTAGE_5V_STANDBY 0x12C6
67 #define TEMPERATURE_MIN (-40) /* degr. C */
68 #define TEMPERATURE_MAX (+90) /* degr. C */
69 #define TEMPERATURE_DISPLAY_MIN (-35) /* degr. C */
70 #define TEMPERATURE_DISPLAY_MAX (+85) /* degr. C */
72 #define VOLTAGE_5V_MIN (+4500) /* mV */
73 #define VOLTAGE_5V_MAX (+5500) /* mV */
75 #define VOLTAGE_5V_STANDBY_MIN (+3500) /* mV */
76 #define VOLTAGE_5V_STANDBY_MAX (+5500) /* mV */
78 typedef struct sysmon_s sysmon_t;
79 typedef struct sysmon_table_s sysmon_table_t;
81 static void sysmon_dspic_init (sysmon_t * this);
82 static int sysmon_dspic_read (sysmon_t * this, uint addr);
83 static void sysmon_backlight_disable (sysmon_table_t * this);
88 void (*init)(sysmon_t *);
89 int (*read)(sysmon_t *, uint);
92 static sysmon_t sysmon_dspic =
93 {CFG_I2C_DSPIC_IO_ADDR, sysmon_dspic_init, sysmon_dspic_read};
95 static sysmon_t * sysmon_list[] =
101 struct sysmon_table_s
106 void (*exec_before)(sysmon_table_t *);
107 void (*exec_after)(sysmon_table_t *);
123 static sysmon_table_t sysmon_table[] =
126 "Temperature", " C", &sysmon_dspic, NULL, sysmon_backlight_disable,
127 1, 1, -32768, 32767, 0xFFFF,
128 0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
129 0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
134 "+ 5 V", "V", &sysmon_dspic, NULL, NULL,
135 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
136 100, 1000, 0, 0xFFFF, 0xFFFF,
137 VOLTAGE_5V_MIN, VOLTAGE_5V_MAX, 0,
138 VOLTAGE_5V_MIN, VOLTAGE_5V_MAX, 0,
143 "+ 5 V standby", "V", &sysmon_dspic, NULL, NULL,
144 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
145 100, 1000, 0, 0xFFFF, 0xFFFF,
146 VOLTAGE_5V_STANDBY_MIN, VOLTAGE_5V_STANDBY_MAX, 0,
147 VOLTAGE_5V_STANDBY_MIN, VOLTAGE_5V_STANDBY_MAX, 0,
148 REG_VOLTAGE_5V_STANDBY
151 static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
153 int sysmon_init_f (void)
157 for (l = sysmon_list; *l; l++)
163 void sysmon_reloc (void)
168 for (l = sysmon_list; *l; l++) {
174 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
175 RELOC(t->exec_before);
176 RELOC(t->exec_after);
181 static char *sysmon_unit_value (sysmon_table_t *s, uint val)
188 unit_val = s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
195 unit_val = -unit_val;
199 p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
202 frac = unit_val % s->unit_div;
204 frac /= (s->unit_div / s->unit_precision);
206 decimal = s->unit_precision;
210 for (decimal /= 10; decimal != 0; decimal /= 10)
211 *p++ = '0' + (frac / decimal) % 10;
212 strcpy(p, s->unit_name);
217 static void sysmon_dspic_init (sysmon_t * this)
221 static int sysmon_dspic_read (sysmon_t * this, uint addr)
223 int res = dspic_read(addr);
225 /* To fit into the table range we should add 0x8000 */
226 return (res == -1) ? -1 : (res + 0x8000);
229 static void sysmon_backlight_disable (sysmon_table_t * this)
231 #if defined(CONFIG_VIDEO)
232 board_backlight_switch(this->val_valid_alt);
236 int sysmon_post_test (int flags)
242 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
246 val = t->sysmon->read(t->sysmon, t->addr);
248 t->val_valid = val >= t->val_min && val <= t->val_max;
249 t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
252 t->val_valid_alt = 0;
258 if ((!t->val_valid) || (flags & POST_MANUAL)) {
259 printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
260 printf("allowed range");
261 printf(" %-8s ..", sysmon_unit_value(t, t->val_min));
262 printf(" %-8s", sysmon_unit_value(t, t->val_max));
263 printf(" %s\n", t->val_valid ? "OK" : "FAIL");
272 #endif /* CONFIG_POST & CFG_POST_SYSMON */