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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 *
Wolfgang Denk1a459662013-07-08 09:37:19 +02005 * SPDX-License-Identifier: GPL-2.0+
Wolfgang Denkad5bb452007-03-06 18:08:43 +01006 */
7
8#include <post.h>
9#include <common.h>
10
Wolfgang Denkad5bb452007-03-06 18:08:43 +010011/*
12 * SYSMON test
13 *
14 * This test performs the system hardware monitoring.
15 * The test passes when all the following voltages and temperatures
16 * are within allowed ranges:
17 *
18 * Board temperature
19 * Front temperature
20 * +3.3V CPU logic
21 * +5V logic
22 * +12V PCMCIA
23 * +12V CCFL
24 * +5V standby
25 *
26 * CCFL is not enabled if temperature values are not within allowed ranges
27 *
28 * See the list off all parameters in the sysmon_table below
29 */
30
31#include <post.h>
32#include <watchdog.h>
33#include <i2c.h>
34
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020035#if CONFIG_POST & CONFIG_SYS_POST_SYSMON
Wolfgang Denkad5bb452007-03-06 18:08:43 +010036
37DECLARE_GLOBAL_DATA_PTR;
38
39static int sysmon_temp_invalid = 0;
40
41/* #define DEBUG */
42
Wolfgang Denkad5bb452007-03-06 18:08:43 +010043typedef struct sysmon_s sysmon_t;
44typedef struct sysmon_table_s sysmon_table_t;
45
46static void sysmon_lm87_init (sysmon_t * this);
47static void sysmon_pic_init (sysmon_t * this);
48static uint sysmon_i2c_read (sysmon_t * this, uint addr);
49static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr);
50static void sysmon_ccfl_disable (sysmon_table_t * this);
51static void sysmon_ccfl_enable (sysmon_table_t * this);
52
53struct sysmon_s
54{
55 uchar chip;
56 void (*init)(sysmon_t *);
57 uint (*read)(sysmon_t *, uint);
58};
59
60static sysmon_t sysmon_lm87 =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020061 {CONFIG_SYS_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read};
Wolfgang Denkad5bb452007-03-06 18:08:43 +010062static sysmon_t sysmon_lm87_sgn =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020063 {CONFIG_SYS_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read_sgn};
Wolfgang Denkad5bb452007-03-06 18:08:43 +010064static sysmon_t sysmon_pic =
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +020065 {CONFIG_SYS_I2C_PICIO_ADDR, sysmon_pic_init, sysmon_i2c_read};
Wolfgang Denkad5bb452007-03-06 18:08:43 +010066
67static sysmon_t * sysmon_list[] =
68{
69 &sysmon_lm87,
70 &sysmon_lm87_sgn,
71 &sysmon_pic,
72 NULL
73};
74
75struct sysmon_table_s
76{
77 char * name;
78 char * unit_name;
79 sysmon_t * sysmon;
80 void (*exec_before)(sysmon_table_t *);
81 void (*exec_after)(sysmon_table_t *);
82
83 int unit_precision;
84 int unit_div;
85 int unit_min;
86 int unit_max;
87 uint val_mask;
88 uint val_min;
89 uint val_max;
90 int val_valid;
91 uint val_min_alt;
92 uint val_max_alt;
93 int val_valid_alt;
94 uint addr;
95};
96
97static sysmon_table_t sysmon_table[] =
98{
99 {"Board temperature", " C", &sysmon_lm87_sgn, NULL, sysmon_ccfl_disable,
100 1, 1, -128, 127, 0xFF, 0x58, 0xD5, 0, 0x6C, 0xC6, 0, 0x27},
101
102 {"Front temperature", " C", &sysmon_lm87, NULL, sysmon_ccfl_disable,
103 1, 100, -27316, 8984, 0xFF, 0xA4, 0xFC, 0, 0xB2, 0xF1, 0, 0x29},
104
105 {"+3.3V CPU logic", "V", &sysmon_lm87, NULL, NULL,
106 100, 1000, 0, 4386, 0xFF, 0xB6, 0xC9, 0, 0xB6, 0xC9, 0, 0x22},
107
108 {"+ 5 V logic", "V", &sysmon_lm87, NULL, NULL,
109 100, 1000, 0, 6630, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x23},
110
111 {"+12 V PCMCIA", "V", &sysmon_lm87, NULL, NULL,
112 100, 1000, 0, 15460, 0xFF, 0xBC, 0xD0, 0, 0xBC, 0xD0, 0, 0x21},
113
114 {"+12 V CCFL", "V", &sysmon_lm87, NULL, sysmon_ccfl_enable,
115 100, 1000, 0, 15900, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x24},
116
117 {"+ 5 V standby", "V", &sysmon_pic, NULL, NULL,
118 100, 1000, 0, 6040, 0xFF, 0xC8, 0xDE, 0, 0xC8, 0xDE, 0, 0x7C},
119};
Mike Frysingerd2397812011-05-10 07:28:35 +0000120static int sysmon_table_size = ARRAY_SIZE(sysmon_table);
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100121
122static int conversion_done = 0;
123
124
125int sysmon_init_f (void)
126{
127 sysmon_t ** l;
128 ulong reg;
129
130 /* Power on CCFL, PCMCIA */
131 reg = pic_read (0x60);
132 reg |= 0x09;
133 pic_write (0x60, reg);
134
135 for (l = sysmon_list; *l; l++) {
136 (*l)->init(*l);
137 }
138
139 return 0;
140}
141
142void sysmon_reloc (void)
143{
Peter Tyser80f73b92009-09-21 11:20:34 -0500144 /* Do nothing for now, sysmon_reloc() is required by the sysmon post */
Wolfgang Denkad5bb452007-03-06 18:08:43 +0100145}
146
147static char *sysmon_unit_value (sysmon_table_t *s, uint val)
148{
149 static char buf[32];
150 int unit_val =
151 s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
152 char *p, sign;
153 int dec, frac;
154
155 if (val == -1) {
156 return "I/O ERROR";
157 }
158
159 if (unit_val < 0) {
160 sign = '-';
161 unit_val = -unit_val;
162 } else {
163 sign = '+';
164 }
165
166 p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
167
168
169 frac = unit_val % s->unit_div;
170
171 frac /= (s->unit_div / s->unit_precision);
172
173 dec = s->unit_precision;
174
175 if (dec != 1) {
176 *p++ = '.';
177 }
178 for (dec /= 10; dec != 0; dec /= 10) {
179 *p++ = '0' + (frac / dec) % 10;
180 }
181 strcpy(p, s->unit_name);
182
183 return buf;
184}
185
186static void sysmon_lm87_init (sysmon_t * this)
187{
188 uchar val;
189
190 /* Detect LM87 chip */
191 if (i2c_read(this->chip, 0x40, 1, &val, 1) || (val & 0x80) != 0 ||
192 i2c_read(this->chip, 0x3E, 1, &val, 1) || val != 0x02) {
193 printf("Error: LM87 not found at 0x%02X\n", this->chip);
194 return;
195 }
196
197 /* Configure pins 5,6 as AIN */
198 val = 0x03;
199 if (i2c_write(this->chip, 0x16, 1, &val, 1)) {
200 printf("Error: can't write LM87 config register\n");
201 return;
202 }
203
204 /* Start monitoring */
205 val = 0x01;
206 if (i2c_write(this->chip, 0x40, 1, &val, 1)) {
207 printf("Error: can't write LM87 config register\n");
208 return;
209 }
210}
211
212static void sysmon_pic_init (sysmon_t * this)
213{
214}
215
216static uint sysmon_i2c_read (sysmon_t * this, uint addr)
217{
218 uchar val;
219 uint res = i2c_read(this->chip, addr, 1, &val, 1);
220
221 return res == 0 ? val : -1;
222}
223
224static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr)
225{
226 uchar val;
227 return i2c_read(this->chip, addr, 1, &val, 1) == 0 ?
228 128 + (signed char)val : -1;
229}
230
231static void sysmon_ccfl_disable (sysmon_table_t * this)
232{
233 if (!this->val_valid_alt) {
234 sysmon_temp_invalid = 1;
235 }
236}
237
238static void sysmon_ccfl_enable (sysmon_table_t * this)
239{
240 ulong reg;
241
242 if (!sysmon_temp_invalid) {
243 reg = pic_read (0x60);
244 reg |= 0x06;
245 pic_write (0x60, reg);
246 }
247}
248
249int sysmon_post_test (int flags)
250{
251 int res = 0;
252 sysmon_table_t * t;
253 uint val;
254
255 /*
256 * The A/D conversion on the LM87 sensor takes 300 ms.
257 */
258 if (! conversion_done) {
259 while (post_time_ms(gd->post_init_f_time) < 300) WATCHDOG_RESET ();
260 conversion_done = 1;
261 }
262
263 for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
264 if (t->exec_before) {
265 t->exec_before(t);
266 }
267
268 val = t->sysmon->read(t->sysmon, t->addr);
269 if (val != -1) {
270 t->val_valid = val >= t->val_min && val <= t->val_max;
271 t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
272 } else {
273 t->val_valid = 0;
274 t->val_valid_alt = 0;
275 }
276
277 if (t->exec_after) {
278 t->exec_after(t);
279 }
280
281 if ((!t->val_valid) || (flags & POST_MANUAL)) {
282 printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
283 printf("allowed range");
284 printf(" %-8s ..", sysmon_unit_value(t, t->val_min));
285 printf(" %-8s", sysmon_unit_value(t, t->val_max));
286 printf(" %s\n", t->val_valid ? "OK" : "FAIL");
287 }
288
289 if (!t->val_valid) {
290 res = -1;
291 }
292 }
293
294 return res;
295}
296
Jean-Christophe PLAGNIOL-VILLARD6d0f6bc2008-10-16 15:01:15 +0200297#endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */