]> git.ipfire.org Git - people/ms/u-boot.git/blob - post/board/lwmon5/sysmon.c
rename CFG_ macros to CONFIG_SYS
[people/ms/u-boot.git] / post / board / lwmon5 / sysmon.c
1 /*
2 * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
3 *
4 * Developed for DENX Software Engineering GmbH
5 *
6 * See file CREDITS for list of people who contributed to this
7 * project.
8 *
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.
13 *
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.
18 *
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,
22 * MA 02111-1307 USA
23 */
24
25 #include <post.h>
26 #include <common.h>
27
28 /*
29 * SYSMON test
30 *
31 * This test performs the system hardware monitoring.
32 * The test passes when all the following voltages and temperatures
33 * are within allowed ranges:
34 *
35 * Temperature -40 .. +90 C
36 * +5V +4.50 .. +5.50 V
37 * +5V standby +3.50 .. +5.50 V
38 *
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%
42 *
43 * See the list of all parameters in the sysmon_table below
44 */
45
46 #include <post.h>
47 #include <watchdog.h>
48 #include <i2c.h>
49
50 #if defined(CONFIG_VIDEO)
51 #include <mb862xx.h>
52 #endif
53
54 #if CONFIG_POST & CONFIG_SYS_POST_SYSMON
55
56 DECLARE_GLOBAL_DATA_PTR;
57
58 /* from dspic.c */
59 extern int dspic_read(ushort reg);
60
61 #define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off)
62
63 #define REG_TEMPERATURE 0x12BC
64 #define REG_VOLTAGE_5V 0x12CA
65 #define REG_VOLTAGE_5V_STANDBY 0x12C6
66
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 */
71
72 #define VOLTAGE_5V_MIN (+4500) /* mV */
73 #define VOLTAGE_5V_MAX (+5500) /* mV */
74
75 #define VOLTAGE_5V_STANDBY_MIN (+3500) /* mV */
76 #define VOLTAGE_5V_STANDBY_MAX (+5500) /* mV */
77
78 typedef struct sysmon_s sysmon_t;
79 typedef struct sysmon_table_s sysmon_table_t;
80
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);
84
85 struct sysmon_s
86 {
87 uchar chip;
88 void (*init)(sysmon_t *);
89 int (*read)(sysmon_t *, uint);
90 };
91
92 static sysmon_t sysmon_dspic =
93 {CONFIG_SYS_I2C_DSPIC_IO_ADDR, sysmon_dspic_init, sysmon_dspic_read};
94
95 static sysmon_t * sysmon_list[] =
96 {
97 &sysmon_dspic,
98 NULL
99 };
100
101 struct sysmon_table_s
102 {
103 char * name;
104 char * unit_name;
105 sysmon_t * sysmon;
106 void (*exec_before)(sysmon_table_t *);
107 void (*exec_after)(sysmon_table_t *);
108
109 int unit_precision;
110 int unit_div;
111 int unit_min;
112 int unit_max;
113 uint val_mask;
114 uint val_min;
115 uint val_max;
116 int val_valid;
117 uint val_min_alt;
118 uint val_max_alt;
119 int val_valid_alt;
120 uint addr;
121 };
122
123 static sysmon_table_t sysmon_table[] =
124 {
125 {
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,
130 REG_TEMPERATURE,
131 },
132
133 {
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,
138 REG_VOLTAGE_5V,
139 },
140
141 {
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,
147 },
148 };
149 static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
150
151 int sysmon_init_f (void)
152 {
153 sysmon_t ** l;
154
155 for (l = sysmon_list; *l; l++)
156 (*l)->init(*l);
157
158 return 0;
159 }
160
161 void sysmon_reloc (void)
162 {
163 sysmon_t ** l;
164 sysmon_table_t * t;
165
166 for (l = sysmon_list; *l; l++) {
167 RELOC(*l);
168 RELOC((*l)->init);
169 RELOC((*l)->read);
170 }
171
172 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
173 RELOC(t->exec_before);
174 RELOC(t->exec_after);
175 RELOC(t->sysmon);
176 }
177 }
178
179 static char *sysmon_unit_value (sysmon_table_t *s, uint val)
180 {
181 static char buf[32];
182 char *p, sign;
183 int decimal, frac;
184 int unit_val;
185
186 unit_val = s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
187
188 if (val == -1)
189 return "I/O ERROR";
190
191 if (unit_val < 0) {
192 sign = '-';
193 unit_val = -unit_val;
194 } else
195 sign = '+';
196
197 p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
198
199
200 frac = unit_val % s->unit_div;
201
202 frac /= (s->unit_div / s->unit_precision);
203
204 decimal = s->unit_precision;
205
206 if (decimal != 1)
207 *p++ = '.';
208 for (decimal /= 10; decimal != 0; decimal /= 10)
209 *p++ = '0' + (frac / decimal) % 10;
210 strcpy(p, s->unit_name);
211
212 return buf;
213 }
214
215 static void sysmon_dspic_init (sysmon_t * this)
216 {
217 }
218
219 static int sysmon_dspic_read (sysmon_t * this, uint addr)
220 {
221 int res = dspic_read(addr);
222
223 /* To fit into the table range we should add 0x8000 */
224 return (res == -1) ? -1 : (res + 0x8000);
225 }
226
227 static void sysmon_backlight_disable (sysmon_table_t * this)
228 {
229 #if defined(CONFIG_VIDEO)
230 board_backlight_switch(this->val_valid_alt);
231 #endif
232 }
233
234 int sysmon_post_test (int flags)
235 {
236 int res = 0;
237 sysmon_table_t * t;
238 int val;
239
240 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
241 if (t->exec_before)
242 t->exec_before(t);
243
244 val = t->sysmon->read(t->sysmon, t->addr);
245 if (val != -1) {
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;
248 } else {
249 t->val_valid = 0;
250 t->val_valid_alt = 0;
251 }
252
253 if (t->exec_after)
254 t->exec_after(t);
255
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");
262 }
263
264 if (!t->val_valid)
265 res = 1;
266 }
267
268 return res;
269 }
270 #endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */