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Wolfgang Denkad5bb452007-03-06 18:08:43 +01001/*
2 * (C) Copyright 2003
3 * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
4 *
5 * See file CREDITS for list of people who contributed to this
6 * project.
7 *
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.
12 *
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.
17 *
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,
21 * MA 02111-1307 USA
22 */
23
24#include <post.h>
25#include <common.h>
26
Wolfgang Denkad5bb452007-03-06 18:08:43 +010027/*
28 * SYSMON test
29 *
30 * This test performs the system hardware monitoring.
31 * The test passes when all the following voltages and temperatures
32 * are within allowed ranges:
33 *
34 * Board temperature
35 * Front temperature
36 * +3.3V CPU logic
37 * +5V logic
38 * +12V PCMCIA
39 * +12V CCFL
40 * +5V standby
41 *
42 * CCFL is not enabled if temperature values are not within allowed ranges
43 *
44 * See the list off all parameters in the sysmon_table below
45 */
46
47#include <post.h>
48#include <watchdog.h>
49#include <i2c.h>
50
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020051#if CONFIG_POST & CONFIG_SYS_POST_SYSMON
Wolfgang Denkad5bb452007-03-06 18:08:43 +010052
53DECLARE_GLOBAL_DATA_PTR;
54
55static int sysmon_temp_invalid = 0;
56
57/* #define DEBUG */
58
Wolfgang Denkad5bb452007-03-06 18:08:43 +010059typedef struct sysmon_s sysmon_t;
60typedef struct sysmon_table_s sysmon_table_t;
61
62static void sysmon_lm87_init (sysmon_t * this);
63static void sysmon_pic_init (sysmon_t * this);
64static uint sysmon_i2c_read (sysmon_t * this, uint addr);
65static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr);
66static void sysmon_ccfl_disable (sysmon_table_t * this);
67static void sysmon_ccfl_enable (sysmon_table_t * this);
68
69struct sysmon_s
70{
71 uchar chip;
72 void (*init)(sysmon_t *);
73 uint (*read)(sysmon_t *, uint);
74};
75
76static sysmon_t sysmon_lm87 =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020077 {CONFIG_SYS_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read};
Wolfgang Denkad5bb452007-03-06 18:08:43 +010078static sysmon_t sysmon_lm87_sgn =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020079 {CONFIG_SYS_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read_sgn};
Wolfgang Denkad5bb452007-03-06 18:08:43 +010080static sysmon_t sysmon_pic =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020081 {CONFIG_SYS_I2C_PICIO_ADDR, sysmon_pic_init, sysmon_i2c_read};
Wolfgang Denkad5bb452007-03-06 18:08:43 +010082
83static sysmon_t * sysmon_list[] =
84{
85 &sysmon_lm87,
86 &sysmon_lm87_sgn,
87 &sysmon_pic,
88 NULL
89};
90
91struct sysmon_table_s
92{
93 char * name;
94 char * unit_name;
95 sysmon_t * sysmon;
96 void (*exec_before)(sysmon_table_t *);
97 void (*exec_after)(sysmon_table_t *);
98
99 int unit_precision;
100 int unit_div;
101 int unit_min;
102 int unit_max;
103 uint val_mask;
104 uint val_min;
105 uint val_max;
106 int val_valid;
107 uint val_min_alt;
108 uint val_max_alt;
109 int val_valid_alt;
110 uint addr;
111};
112
113static sysmon_table_t sysmon_table[] =
114{
115 {"Board temperature", " C", &sysmon_lm87_sgn, NULL, sysmon_ccfl_disable,
116 1, 1, -128, 127, 0xFF, 0x58, 0xD5, 0, 0x6C, 0xC6, 0, 0x27},
117
118 {"Front temperature", " C", &sysmon_lm87, NULL, sysmon_ccfl_disable,
119 1, 100, -27316, 8984, 0xFF, 0xA4, 0xFC, 0, 0xB2, 0xF1, 0, 0x29},
120
121 {"+3.3V CPU logic", "V", &sysmon_lm87, NULL, NULL,
122 100, 1000, 0, 4386, 0xFF, 0xB6, 0xC9, 0, 0xB6, 0xC9, 0, 0x22},
123
124 {"+ 5 V logic", "V", &sysmon_lm87, NULL, NULL,
125 100, 1000, 0, 6630, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x23},
126
127 {"+12 V PCMCIA", "V", &sysmon_lm87, NULL, NULL,
128 100, 1000, 0, 15460, 0xFF, 0xBC, 0xD0, 0, 0xBC, 0xD0, 0, 0x21},
129
130 {"+12 V CCFL", "V", &sysmon_lm87, NULL, sysmon_ccfl_enable,
131 100, 1000, 0, 15900, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x24},
132
133 {"+ 5 V standby", "V", &sysmon_pic, NULL, NULL,
134 100, 1000, 0, 6040, 0xFF, 0xC8, 0xDE, 0, 0xC8, 0xDE, 0, 0x7C},
135};
136static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
137
138static int conversion_done = 0;
139
140
141int sysmon_init_f (void)
142{
143 sysmon_t ** l;
144 ulong reg;
145
146 /* Power on CCFL, PCMCIA */
147 reg = pic_read (0x60);
148 reg |= 0x09;
149 pic_write (0x60, reg);
150
151 for (l = sysmon_list; *l; l++) {
152 (*l)->init(*l);
153 }
154
155 return 0;
156}
157
158void sysmon_reloc (void)
159{
Peter Tyser80f73b92009-09-21 11:20:34 -0500160 /* Do nothing for now, sysmon_reloc() is required by the sysmon post */
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100161}
162
163static char *sysmon_unit_value (sysmon_table_t *s, uint val)
164{
165 static char buf[32];
166 int unit_val =
167 s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
168 char *p, sign;
169 int dec, frac;
170
171 if (val == -1) {
172 return "I/O ERROR";
173 }
174
175 if (unit_val < 0) {
176 sign = '-';
177 unit_val = -unit_val;
178 } else {
179 sign = '+';
180 }
181
182 p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
183
184
185 frac = unit_val % s->unit_div;
186
187 frac /= (s->unit_div / s->unit_precision);
188
189 dec = s->unit_precision;
190
191 if (dec != 1) {
192 *p++ = '.';
193 }
194 for (dec /= 10; dec != 0; dec /= 10) {
195 *p++ = '0' + (frac / dec) % 10;
196 }
197 strcpy(p, s->unit_name);
198
199 return buf;
200}
201
202static void sysmon_lm87_init (sysmon_t * this)
203{
204 uchar val;
205
206 /* Detect LM87 chip */
207 if (i2c_read(this->chip, 0x40, 1, &val, 1) || (val & 0x80) != 0 ||
208 i2c_read(this->chip, 0x3E, 1, &val, 1) || val != 0x02) {
209 printf("Error: LM87 not found at 0x%02X\n", this->chip);
210 return;
211 }
212
213 /* Configure pins 5,6 as AIN */
214 val = 0x03;
215 if (i2c_write(this->chip, 0x16, 1, &val, 1)) {
216 printf("Error: can't write LM87 config register\n");
217 return;
218 }
219
220 /* Start monitoring */
221 val = 0x01;
222 if (i2c_write(this->chip, 0x40, 1, &val, 1)) {
223 printf("Error: can't write LM87 config register\n");
224 return;
225 }
226}
227
228static void sysmon_pic_init (sysmon_t * this)
229{
230}
231
232static uint sysmon_i2c_read (sysmon_t * this, uint addr)
233{
234 uchar val;
235 uint res = i2c_read(this->chip, addr, 1, &val, 1);
236
237 return res == 0 ? val : -1;
238}
239
240static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr)
241{
242 uchar val;
243 return i2c_read(this->chip, addr, 1, &val, 1) == 0 ?
244 128 + (signed char)val : -1;
245}
246
247static void sysmon_ccfl_disable (sysmon_table_t * this)
248{
249 if (!this->val_valid_alt) {
250 sysmon_temp_invalid = 1;
251 }
252}
253
254static void sysmon_ccfl_enable (sysmon_table_t * this)
255{
256 ulong reg;
257
258 if (!sysmon_temp_invalid) {
259 reg = pic_read (0x60);
260 reg |= 0x06;
261 pic_write (0x60, reg);
262 }
263}
264
265int sysmon_post_test (int flags)
266{
267 int res = 0;
268 sysmon_table_t * t;
269 uint val;
270
271 /*
272 * The A/D conversion on the LM87 sensor takes 300 ms.
273 */
274 if (! conversion_done) {
275 while (post_time_ms(gd->post_init_f_time) < 300) WATCHDOG_RESET ();
276 conversion_done = 1;
277 }
278
279 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
280 if (t->exec_before) {
281 t->exec_before(t);
282 }
283
284 val = t->sysmon->read(t->sysmon, t->addr);
285 if (val != -1) {
286 t->val_valid = val >= t->val_min && val <= t->val_max;
287 t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
288 } else {
289 t->val_valid = 0;
290 t->val_valid_alt = 0;
291 }
292
293 if (t->exec_after) {
294 t->exec_after(t);
295 }
296
297 if ((!t->val_valid) || (flags & POST_MANUAL)) {
298 printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
299 printf("allowed range");
300 printf(" %-8s ..", sysmon_unit_value(t, t->val_min));
301 printf(" %-8s", sysmon_unit_value(t, t->val_max));
302 printf(" %s\n", t->val_valid ? "OK" : "FAIL");
303 }
304
305 if (!t->val_valid) {
306 res = -1;
307 }
308 }
309
310 return res;
311}
312
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200313#endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */