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 & CONFIG_SYS_POST_SYSMON
56 DECLARE_GLOBAL_DATA_PTR;
59 extern int dspic_read(ushort reg, ushort *data);
61 #define REG_TEMPERATURE 0x12BC
62 #define REG_VOLTAGE_5V 0x12CA
63 #define REG_VOLTAGE_5V_STANDBY 0x12C6
65 #define TEMPERATURE_MIN (-40) /* degr. C */
66 #define TEMPERATURE_MAX (+90) /* degr. C */
67 #define TEMPERATURE_DISPLAY_MIN (-35) /* degr. C */
68 #define TEMPERATURE_DISPLAY_MAX (+85) /* degr. C */
70 #define VOLTAGE_5V_MIN (+4500) /* mV */
71 #define VOLTAGE_5V_MAX (+5500) /* mV */
73 #define VOLTAGE_5V_STANDBY_MIN (+3500) /* mV */
74 #define VOLTAGE_5V_STANDBY_MAX (+5500) /* mV */
76 typedef struct sysmon_s sysmon_t;
77 typedef struct sysmon_table_s sysmon_table_t;
79 static void sysmon_dspic_init(sysmon_t *this);
80 static int sysmon_dspic_read(sysmon_t *this, uint addr, int *val);
81 static int sysmon_dspic_read_sgn(sysmon_t *this, uint addr, int *val);
82 static void sysmon_backlight_disable(sysmon_table_t *this);
86 void (*init)(sysmon_t *);
87 int (*read)(sysmon_t *, uint, int *);
90 static sysmon_t sysmon_dspic = {
91 CONFIG_SYS_I2C_DSPIC_IO_ADDR,
96 static sysmon_t sysmon_dspic_sgn = {
97 CONFIG_SYS_I2C_DSPIC_IO_ADDR,
102 static sysmon_t *sysmon_list[] = {
107 struct sysmon_table_s {
111 void (*exec_before)(sysmon_table_t *);
112 void (*exec_after)(sysmon_table_t *);
128 static sysmon_table_t sysmon_table[] = {
130 "Temperature", " C", &sysmon_dspic, NULL, sysmon_backlight_disable,
131 1, 1, -32768, 32767, 0xFFFF,
132 0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
133 0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
138 "+ 5 V", "V", &sysmon_dspic, NULL, NULL,
139 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
140 0x8000 + VOLTAGE_5V_MIN, 0x8000 + VOLTAGE_5V_MAX, 0,
141 0x8000 + VOLTAGE_5V_MIN, 0x8000 + VOLTAGE_5V_MAX, 0,
146 "+ 5 V standby", "V", &sysmon_dspic, NULL, NULL,
147 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
148 0x8000 + VOLTAGE_5V_STANDBY_MIN, 0x8000 + VOLTAGE_5V_STANDBY_MAX, 0,
149 0x8000 + VOLTAGE_5V_STANDBY_MIN, 0x8000 + VOLTAGE_5V_STANDBY_MAX, 0,
150 REG_VOLTAGE_5V_STANDBY,
154 "Temperature", "°C", &sysmon_dspic_sgn, NULL, sysmon_backlight_disable,
155 1, 1, -32768, 32767, 0xFFFF,
156 0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
157 0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
162 int sysmon_init_f(void)
166 for (l = sysmon_list; *l; l++)
172 void sysmon_reloc(void)
174 /* Do nothing for now, sysmon_reloc() is required by the sysmon post */
177 static char *sysmon_unit_value(sysmon_table_t *s, uint val)
184 unit_val = s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
191 unit_val = -unit_val;
196 p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
198 frac = unit_val % s->unit_div;
199 frac /= (s->unit_div / s->unit_precision);
201 decimal = s->unit_precision;
205 for (decimal /= 10; decimal != 0; decimal /= 10)
206 *p++ = '0' + (frac / decimal) % 10;
207 strcpy(p, s->unit_name);
212 static void sysmon_dspic_init(sysmon_t *this)
216 static int sysmon_dspic_read(sysmon_t *this, uint addr, int *val)
220 if (dspic_read(addr, &data) == 0){
221 /* To fit into the table range we should add 0x8000 */
222 *val = data + 0x8000;
229 static int sysmon_dspic_read_sgn(sysmon_t *this, uint addr, int *val)
233 if (dspic_read(addr, &data) == 0){
234 /* To fit into the table range we should add 0x8000 */
235 *val = (signed short)data + 0x8000;
242 static void sysmon_backlight_disable(sysmon_table_t *this)
244 #if defined(CONFIG_VIDEO)
245 board_backlight_switch(this->val_valid_alt);
249 int sysmon_post_test(int flags)
255 for (t = sysmon_table; t < sysmon_table + ARRAY_SIZE(sysmon_table); t++) {
260 if (t->sysmon->read(t->sysmon, t->addr, &val) != 0) {
262 t->val_valid_alt = 0;
263 post_log(": read failed\n");
268 if (t->val_valid != 0) {
269 t->val_valid = val >= t->val_min && val <= t->val_max;
270 t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
276 if ((!t->val_valid) || (flags)) {
277 post_log("\n\t%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
278 post_log("allowed range");
279 post_log(" %-8s ..", sysmon_unit_value(t, t->val_min));
280 post_log(" %-8s", sysmon_unit_value(t, t->val_max));
281 post_log(" %s", t->val_valid ? "OK" : "FAIL");
293 #endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */