+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <post.h>
+#include <common.h>
+
+#ifdef CONFIG_POST
+
+/*
+ * SYSMON test
+ *
+ * This test performs the system hardware monitoring.
+ * The test passes when all the following voltages and temperatures
+ * are within allowed ranges:
+ *
+ * Board temperature
+ * Front temperature
+ * +3.3V CPU logic
+ * +5V logic
+ * +12V PCMCIA
+ * +12V CCFL
+ * +5V standby
+ *
+ * CCFL is not enabled if temperature values are not within allowed ranges
+ *
+ * See the list off all parameters in the sysmon_table below
+ */
+
+#include <post.h>
+#include <watchdog.h>
+#include <i2c.h>
+
+static int sysmon_temp_invalid = 0;
+
+#if CONFIG_POST & CFG_POST_SYSMON
+
+/* #define DEBUG */
+
+#define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off)
+
+typedef struct sysmon_s sysmon_t;
+typedef struct sysmon_table_s sysmon_table_t;
+
+static void sysmon_lm87_init (sysmon_t * this);
+static void sysmon_pic_init (sysmon_t * this);
+static uint sysmon_i2c_read (sysmon_t * this, uint addr);
+static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr);
+static void sysmon_ccfl_disable (sysmon_table_t * this);
+static void sysmon_ccfl_enable (sysmon_table_t * this);
+
+struct sysmon_s
+{
+ uchar chip;
+ void (*init)(sysmon_t *);
+ uint (*read)(sysmon_t *, uint);
+};
+
+static sysmon_t sysmon_lm87 =
+ {CFG_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read};
+static sysmon_t sysmon_lm87_sgn =
+ {CFG_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read_sgn};
+static sysmon_t sysmon_pic =
+ {CFG_I2C_PICIO_ADDR, sysmon_pic_init, sysmon_i2c_read};
+
+static sysmon_t * sysmon_list[] =
+{
+ &sysmon_lm87,
+ &sysmon_lm87_sgn,
+ &sysmon_pic,
+ NULL
+};
+
+struct sysmon_table_s
+{
+ char * name;
+ char * unit_name;
+ sysmon_t * sysmon;
+ void (*exec_before)(sysmon_table_t *);
+ void (*exec_after)(sysmon_table_t *);
+
+ int unit_div;
+ int unit_min;
+ int unit_max;
+ uint val_mask;
+ uint val_min;
+ uint val_max;
+ int val_valid;
+ uint addr;
+};
+
+static sysmon_table_t sysmon_table[] =
+{
+ {"Board temperature", " C", &sysmon_lm87_sgn, NULL, sysmon_ccfl_disable,
+ 1, -128, 127, 0xFF, 0x58, 0xD5, 0, 0x27},
+
+ {"Front temperature", " C", &sysmon_lm87, NULL, sysmon_ccfl_disable,
+ 100, -27316, 8984, 0xFF, 0xA4, 0xFC, 0, 0x29},
+
+ {"+3.3V CPU logic", "V", &sysmon_lm87, NULL, NULL,
+ 1000, 0, 4386, 0xFF, 0xB6, 0xC9, 0, 0x22},
+
+ {"+5V logic", "V", &sysmon_lm87, NULL, NULL,
+ 1000, 0, 6630, 0xFF, 0xB6, 0xCA, 0, 0x23},
+
+ {"+12V PCMCIA", "V", &sysmon_lm87, NULL, NULL,
+ 1000, 0, 15460, 0xFF, 0xBC, 0xD0, 0, 0x21},
+
+ {"+12V CCFL", "V", &sysmon_lm87, NULL, sysmon_ccfl_enable,
+ 1000, 0, 15900, 0xFF, 0xB6, 0xCA, 0, 0x24},
+
+ {"+5V standby", "V", &sysmon_pic, NULL, NULL,
+ 1000, 0, 6040, 0xFF, 0xC8, 0xDE, 0, 0x7C},
+};
+static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
+
+static int conversion_done = 0;
+
+
+int sysmon_init_f (void)
+{
+ sysmon_t ** l;
+ ulong reg;
+
+ /* Power on CCFL, PCMCIA */
+ reg = pic_read (0x60);
+ reg |= 0x09;
+ pic_write (0x60, reg);
+
+ for (l = sysmon_list; *l; l++)
+ {
+ (*l)->init(*l);
+ }
+
+ return 0;
+}
+
+void sysmon_reloc (void)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ sysmon_t ** l;
+ sysmon_table_t * t;
+
+ for (l = sysmon_list; *l; l++)
+ {
+ RELOC(*l);
+ RELOC((*l)->init);
+ RELOC((*l)->read);
+ }
+
+ for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++)
+ {
+ RELOC(t->exec_before);
+ RELOC(t->exec_after);
+ RELOC(t->sysmon);
+ }
+}
+
+static char * sysmon_unit_value (sysmon_table_t * s, uint val)
+{
+ static char buf[32];
+ int unit_val =
+ s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
+ char * p;
+ int dec, frac;
+
+ sprintf(buf, "%+d", unit_val / s->unit_div);
+
+ frac = (unit_val > 0 ? unit_val : -unit_val) % s->unit_div;
+ p = buf + strlen(buf);
+
+ dec = s->unit_div;
+
+ if (dec != 1)
+ {
+ *p++ = '.';
+ }
+
+ for (dec /= 10; dec != 0; dec /= 10)
+ {
+ *p++ = '0' + frac / dec % 10;
+ }
+
+ strcpy(p, s->unit_name);
+
+ return buf;
+}
+
+static void sysmon_lm87_init (sysmon_t * this)
+{
+ uchar val;
+
+ /* Detect LM87 chip */
+ if (i2c_read(this->chip, 0x40, 1, &val, 1) || (val & 0x80) != 0 ||
+ i2c_read(this->chip, 0x3E, 1, &val, 1) || val != 0x02)
+ {
+ printf("Error: LM87 not found at 0x%02X\n", this->chip);
+ return;
+ }
+
+ /* Configure pins 5,6 as AIN */
+ val = 0x03;
+ if (i2c_write(this->chip, 0x16, 1, &val, 1))
+ {
+ printf("Error: can't write LM87 config register\n");
+ return;
+ }
+
+ /* Start monitoring */
+ val = 0x01;
+ if (i2c_write(this->chip, 0x40, 1, &val, 1))
+ {
+ printf("Error: can't write LM87 config register\n");
+ return;
+ }
+}
+
+static void sysmon_pic_init (sysmon_t * this)
+{
+}
+
+static uint sysmon_i2c_read (sysmon_t * this, uint addr)
+{
+ uchar val;
+ uint res = i2c_read(this->chip, addr, 1, &val, 1);
+
+ return res == 0 ? val : -1;
+}
+
+static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr)
+{
+ uchar val;
+ return i2c_read(this->chip, addr, 1, &val, 1) == 0 ?
+ 128 + (signed char)val : -1;
+}
+
+static void sysmon_ccfl_disable (sysmon_table_t * this)
+{
+ if (!this->val_valid)
+ {
+ sysmon_temp_invalid = 1;
+ }
+}
+
+static void sysmon_ccfl_enable (sysmon_table_t * this)
+{
+ ulong reg;
+
+ if (!sysmon_temp_invalid)
+ {
+ reg = pic_read (0x60);
+ reg |= 0x02;
+ pic_write (0x60, reg);
+ }
+}
+
+int sysmon_post_test (int flags)
+{
+ DECLARE_GLOBAL_DATA_PTR;
+
+ int res = 0;
+ sysmon_table_t * t;
+ uint val;
+
+ /*
+ * The A/D conversion on the LM87 sensor takes 300 ms.
+ */
+ if (! conversion_done)
+ {
+ while (post_time_ms(gd->post_init_f_time) < 300) WATCHDOG_RESET ();
+ conversion_done = 1;
+ }
+
+ for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++)
+ {
+ if (t->exec_before)
+ {
+ t->exec_before(t);
+ }
+
+ val = t->sysmon->read(t->sysmon, t->addr);
+ t->val_valid = val >= t->val_min && val <= t->val_max;
+
+ if (t->exec_after)
+ {
+ t->exec_after(t);
+ }
+
+#ifndef DEBUG
+ if (!t->val_valid)
+#endif
+ {
+ printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
+ printf("allowed range");
+ printf(" %-8s ..", sysmon_unit_value(t, t->val_min));
+ printf(" %-8s", sysmon_unit_value(t, t->val_max));
+ printf(" %s\n", t->val_valid ? "OK" : "FAIL");
+ }
+
+ if (!t->val_valid)
+ {
+ res = -1;
+ }
+ }
+
+ return res;
+}
+
+#endif /* CONFIG_POST & CFG_POST_SYSMON */
+#endif /* CONFIG_POST */
projects / karo-tx-uboot.git / commitdiff