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
);
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 {CONFIG_SYS_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 0x8000 + VOLTAGE_5V_MIN
, 0x8000 + VOLTAGE_5V_MAX
, 0,
137 0x8000 + VOLTAGE_5V_MIN
, 0x8000 + VOLTAGE_5V_MAX
, 0,
142 "+ 5 V standby", "V", &sysmon_dspic
, NULL
, NULL
,
143 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
144 0x8000 + VOLTAGE_5V_STANDBY_MIN
, 0x8000 + VOLTAGE_5V_STANDBY_MAX
, 0,
145 0x8000 + VOLTAGE_5V_STANDBY_MIN
, 0x8000 + VOLTAGE_5V_STANDBY_MAX
, 0,
146 REG_VOLTAGE_5V_STANDBY
,
149 static int sysmon_table_size
= sizeof(sysmon_table
) / sizeof(sysmon_table
[0]);
151 int sysmon_init_f (void)
155 for (l
= sysmon_list
; *l
; l
++)
161 void sysmon_reloc (void)
166 for (l
= sysmon_list
; *l
; l
++) {
172 for (t
= sysmon_table
; t
< sysmon_table
+ sysmon_table_size
; t
++) {
173 RELOC(t
->exec_before
);
174 RELOC(t
->exec_after
);
179 static char *sysmon_unit_value (sysmon_table_t
*s
, uint val
)
186 unit_val
= s
->unit_min
+ (s
->unit_max
- s
->unit_min
) * val
/ s
->val_mask
;
193 unit_val
= -unit_val
;
197 p
= buf
+ sprintf(buf
, "%c%2d", sign
, unit_val
/ s
->unit_div
);
200 frac
= unit_val
% s
->unit_div
;
202 frac
/= (s
->unit_div
/ s
->unit_precision
);
204 decimal
= s
->unit_precision
;
208 for (decimal
/= 10; decimal
!= 0; decimal
/= 10)
209 *p
++ = '0' + (frac
/ decimal
) % 10;
210 strcpy(p
, s
->unit_name
);
215 static void sysmon_dspic_init (sysmon_t
* this)
219 static int sysmon_dspic_read (sysmon_t
* this, uint addr
)
221 int res
= dspic_read(addr
);
223 /* To fit into the table range we should add 0x8000 */
224 return (res
== -1) ? -1 : (res
+ 0x8000);
227 static void sysmon_backlight_disable (sysmon_table_t
* this)
229 #if defined(CONFIG_VIDEO)
230 board_backlight_switch(this->val_valid_alt
);
234 int sysmon_post_test (int flags
)
240 for (t
= sysmon_table
; t
< sysmon_table
+ sysmon_table_size
; t
++) {
244 val
= t
->sysmon
->read(t
->sysmon
, t
->addr
);
246 t
->val_valid
= val
>= t
->val_min
&& val
<= t
->val_max
;
247 t
->val_valid_alt
= val
>= t
->val_min_alt
&& val
<= t
->val_max_alt
;
250 t
->val_valid_alt
= 0;
256 if ((!t
->val_valid
) || (flags
& POST_MANUAL
)) {
257 printf("%-17s = %-10s ", t
->name
, sysmon_unit_value(t
, val
));
258 printf("allowed range");
259 printf(" %-8s ..", sysmon_unit_value(t
, t
->val_min
));
260 printf(" %-8s", sysmon_unit_value(t
, t
->val_max
));
261 printf(" %s\n", t
->val_valid
? "OK" : "FAIL");
270 #endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */