3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
5 * See file CREDITS for list of people who contributed to this
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License as
10 * published by the Free Software Foundation; either version 2 of
11 * the License, or (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
32 * This test performs the system hardware monitoring.
33 * The test passes when all the following voltages and temperatures
34 * are within allowed ranges:
44 * CCFL is not enabled if temperature values are not within allowed ranges
46 * See the list off all parameters in the sysmon_table below
53 #if CONFIG_POST & CFG_POST_SYSMON
55 static int sysmon_temp_invalid = 0;
59 #define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off)
61 typedef struct sysmon_s sysmon_t;
62 typedef struct sysmon_table_s sysmon_table_t;
64 static void sysmon_lm87_init (sysmon_t * this);
65 static void sysmon_pic_init (sysmon_t * this);
66 static uint sysmon_i2c_read (sysmon_t * this, uint addr);
67 static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr);
68 static void sysmon_ccfl_disable (sysmon_table_t * this);
69 static void sysmon_ccfl_enable (sysmon_table_t * this);
74 void (*init)(sysmon_t *);
75 uint (*read)(sysmon_t *, uint);
78 static sysmon_t sysmon_lm87 =
79 {CFG_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read};
80 static sysmon_t sysmon_lm87_sgn =
81 {CFG_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read_sgn};
82 static sysmon_t sysmon_pic =
83 {CFG_I2C_PICIO_ADDR, sysmon_pic_init, sysmon_i2c_read};
85 static sysmon_t * sysmon_list[] =
98 void (*exec_before)(sysmon_table_t *);
99 void (*exec_after)(sysmon_table_t *);
115 static sysmon_table_t sysmon_table[] =
117 {"Board temperature", " C", &sysmon_lm87_sgn, NULL, sysmon_ccfl_disable,
118 1, 1, -128, 127, 0xFF, 0x58, 0xD5, 0, 0x67, 0xC6, 0, 0x27},
120 {"Front temperature", " C", &sysmon_lm87, NULL, sysmon_ccfl_disable,
121 1, 100, -27316, 8984, 0xFF, 0xA4, 0xFC, 0, 0xAE, 0xF1, 0, 0x29},
123 {"+3.3V CPU logic", "V", &sysmon_lm87, NULL, NULL,
124 100, 1000, 0, 4386, 0xFF, 0xB6, 0xC9, 0, 0xB6, 0xC9, 0, 0x22},
126 {"+ 5 V logic", "V", &sysmon_lm87, NULL, NULL,
127 100, 1000, 0, 6630, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x23},
129 {"+12 V PCMCIA", "V", &sysmon_lm87, NULL, NULL,
130 100, 1000, 0, 15460, 0xFF, 0xBC, 0xD0, 0, 0xBC, 0xD0, 0, 0x21},
132 {"+12 V CCFL", "V", &sysmon_lm87, NULL, sysmon_ccfl_enable,
133 100, 1000, 0, 15900, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x24},
135 {"+ 5 V standby", "V", &sysmon_pic, NULL, NULL,
136 100, 1000, 0, 6040, 0xFF, 0xC8, 0xDE, 0, 0xC8, 0xDE, 0, 0x7C},
138 static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
140 static int conversion_done = 0;
143 int sysmon_init_f (void)
148 /* Power on CCFL, PCMCIA */
149 reg = pic_read (0x60);
151 pic_write (0x60, reg);
153 for (l = sysmon_list; *l; l++)
161 void sysmon_reloc (void)
163 DECLARE_GLOBAL_DATA_PTR;
168 for (l = sysmon_list; *l; l++)
175 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++)
177 RELOC(t->exec_before);
178 RELOC(t->exec_after);
183 static char *sysmon_unit_value (sysmon_table_t *s, uint val)
187 s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
193 unit_val = -unit_val;
198 p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
201 frac = unit_val % s->unit_div;
203 frac /= (s->unit_div / s->unit_precision);
205 dec = s->unit_precision;
211 for (dec /= 10; dec != 0; dec /= 10)
213 *p++ = '0' + (frac / dec) % 10;
215 strcpy(p, s->unit_name);
220 static void sysmon_lm87_init (sysmon_t * this)
224 /* Detect LM87 chip */
225 if (i2c_read(this->chip, 0x40, 1, &val, 1) || (val & 0x80) != 0 ||
226 i2c_read(this->chip, 0x3E, 1, &val, 1) || val != 0x02)
228 printf("Error: LM87 not found at 0x%02X\n", this->chip);
232 /* Configure pins 5,6 as AIN */
234 if (i2c_write(this->chip, 0x16, 1, &val, 1))
236 printf("Error: can't write LM87 config register\n");
240 /* Start monitoring */
242 if (i2c_write(this->chip, 0x40, 1, &val, 1))
244 printf("Error: can't write LM87 config register\n");
249 static void sysmon_pic_init (sysmon_t * this)
253 static uint sysmon_i2c_read (sysmon_t * this, uint addr)
256 uint res = i2c_read(this->chip, addr, 1, &val, 1);
258 return res == 0 ? val : -1;
261 static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr)
264 return i2c_read(this->chip, addr, 1, &val, 1) == 0 ?
265 128 + (signed char)val : -1;
268 static void sysmon_ccfl_disable (sysmon_table_t * this)
270 if (!this->val_valid_alt)
272 sysmon_temp_invalid = 1;
276 static void sysmon_ccfl_enable (sysmon_table_t * this)
280 if (!sysmon_temp_invalid)
282 reg = pic_read (0x60);
284 pic_write (0x60, reg);
288 int sysmon_post_test (int flags)
290 DECLARE_GLOBAL_DATA_PTR;
297 * The A/D conversion on the LM87 sensor takes 300 ms.
299 if (! conversion_done)
301 while (post_time_ms(gd->post_init_f_time) < 300) WATCHDOG_RESET ();
305 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++)
312 val = t->sysmon->read(t->sysmon, t->addr);
313 t->val_valid = val >= t->val_min && val <= t->val_max;
314 t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
321 if ((!t->val_valid) || (flags & POST_MANUAL))
323 printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
324 printf("allowed range");
325 printf(" %-8s ..", sysmon_unit_value(t, t->val_min));
326 printf(" %-8s", sysmon_unit_value(t, t->val_max));
327 printf(" %s\n", t->val_valid ? "OK" : "FAIL");
339 #endif /* CONFIG_POST & CFG_POST_SYSMON */
340 #endif /* CONFIG_POST */