--- /dev/null
+/*
+ * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com
+ *
+ * Developed for DENX Software Engineering GmbH
+ *
+ * SPDX-License-Identifier: GPL-2.0+
+ */
+
+#include <post.h>
+#include <common.h>
+
+/*
+ * SYSMON test
+ *
+ * This test performs the system hardware monitoring.
+ * The test passes when all the following voltages and temperatures
+ * are within allowed ranges:
+ *
+ * Temperature -40 .. +90 C
+ * +5V +4.50 .. +5.50 V
+ * +5V standby +3.50 .. +5.50 V
+ *
+ * LCD backlight is not enabled if temperature values are not within
+ * allowed ranges (-30 .. + 80). The brightness of backlite can be
+ * controlled by setting "brightness" environment variable. Default value is 50%
+ *
+ * See the list of all parameters in the sysmon_table below
+ */
+
+#include <post.h>
+#include <watchdog.h>
+#include <i2c.h>
+
+#if defined(CONFIG_VIDEO)
+#include <mb862xx.h>
+#endif
+
+#if CONFIG_POST & CONFIG_SYS_POST_SYSMON
+
+DECLARE_GLOBAL_DATA_PTR;
+
+/* from dspic.c */
+extern int dspic_read(ushort reg, ushort *data);
+
+#define REG_TEMPERATURE 0x12BC
+#define REG_VOLTAGE_5V 0x12CA
+#define REG_VOLTAGE_5V_STANDBY 0x12C6
+
+#define TEMPERATURE_MIN (-40) /* degr. C */
+#define TEMPERATURE_MAX (+90) /* degr. C */
+#define TEMPERATURE_DISPLAY_MIN (-35) /* degr. C */
+#define TEMPERATURE_DISPLAY_MAX (+85) /* degr. C */
+
+#define VOLTAGE_5V_MIN (+4500) /* mV */
+#define VOLTAGE_5V_MAX (+5500) /* mV */
+
+#define VOLTAGE_5V_STANDBY_MIN (+3500) /* mV */
+#define VOLTAGE_5V_STANDBY_MAX (+5500) /* mV */
+
+typedef struct sysmon_s sysmon_t;
+typedef struct sysmon_table_s sysmon_table_t;
+
+static void sysmon_dspic_init(sysmon_t *this);
+static int sysmon_dspic_read(sysmon_t *this, uint addr, int *val);
+static int sysmon_dspic_read_sgn(sysmon_t *this, uint addr, int *val);
+static void sysmon_backlight_disable(sysmon_table_t *this);
+
+struct sysmon_s {
+ uchar chip;
+ void (*init)(sysmon_t *);
+ int (*read)(sysmon_t *, uint, int *);
+};
+
+static sysmon_t sysmon_dspic = {
+ CONFIG_SYS_I2C_DSPIC_IO_ADDR,
+ sysmon_dspic_init,
+ sysmon_dspic_read
+};
+
+static sysmon_t sysmon_dspic_sgn = {
+ CONFIG_SYS_I2C_DSPIC_IO_ADDR,
+ sysmon_dspic_init,
+ sysmon_dspic_read_sgn
+};
+
+static sysmon_t *sysmon_list[] = {
+ &sysmon_dspic,
+ 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_precision;
+ int unit_div;
+ int unit_min;
+ int unit_max;
+ uint val_mask;
+ uint val_min;
+ uint val_max;
+ int val_valid;
+ uint val_min_alt;
+ uint val_max_alt;
+ int val_valid_alt;
+ uint addr;
+};
+
+static sysmon_table_t sysmon_table[] = {
+ {
+ "Temperature", " C", &sysmon_dspic, NULL, sysmon_backlight_disable,
+ 1, 1, -32768, 32767, 0xFFFF,
+ 0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
+ 0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
+ REG_TEMPERATURE,
+ },
+
+ {
+ "+ 5 V", "V", &sysmon_dspic, NULL, NULL,
+ 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
+ 0x8000 + VOLTAGE_5V_MIN, 0x8000 + VOLTAGE_5V_MAX, 0,
+ 0x8000 + VOLTAGE_5V_MIN, 0x8000 + VOLTAGE_5V_MAX, 0,
+ REG_VOLTAGE_5V,
+ },
+
+ {
+ "+ 5 V standby", "V", &sysmon_dspic, NULL, NULL,
+ 100, 1000, -0x8000, 0x7FFF, 0xFFFF,
+ 0x8000 + VOLTAGE_5V_STANDBY_MIN, 0x8000 + VOLTAGE_5V_STANDBY_MAX, 0,
+ 0x8000 + VOLTAGE_5V_STANDBY_MIN, 0x8000 + VOLTAGE_5V_STANDBY_MAX, 0,
+ REG_VOLTAGE_5V_STANDBY,
+ },
+
+ {
+ "Temperature", "°C", &sysmon_dspic_sgn, NULL, sysmon_backlight_disable,
+ 1, 1, -32768, 32767, 0xFFFF,
+ 0x8000 + TEMPERATURE_MIN, 0x8000 + TEMPERATURE_MAX, 0,
+ 0x8000 + TEMPERATURE_DISPLAY_MIN, 0x8000 + TEMPERATURE_DISPLAY_MAX, 0,
+ REG_TEMPERATURE,
+ },
+};
+
+int sysmon_init_f(void)
+{
+ sysmon_t **l;
+
+ for (l = sysmon_list; *l; l++)
+ (*l)->init(*l);
+
+ return 0;
+}
+
+void sysmon_reloc(void)
+{
+ /* Do nothing for now, sysmon_reloc() is required by the sysmon post */
+}
+
+static char *sysmon_unit_value(sysmon_table_t *s, uint val)
+{
+ static char buf[32];
+ char *p, sign;
+ int decimal, frac;
+ int unit_val;
+
+ unit_val = s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
+
+ if (val == -1)
+ return "I/O ERROR";
+
+ if (unit_val < 0) {
+ sign = '-';
+ unit_val = -unit_val;
+ } else {
+ sign = '+';
+ }
+
+ p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
+
+ frac = unit_val % s->unit_div;
+ frac /= (s->unit_div / s->unit_precision);
+
+ decimal = s->unit_precision;
+
+ if (decimal != 1)
+ *p++ = '.';
+ for (decimal /= 10; decimal != 0; decimal /= 10)
+ *p++ = '0' + (frac / decimal) % 10;
+ strcpy(p, s->unit_name);
+
+ return buf;
+}
+
+static void sysmon_dspic_init(sysmon_t *this)
+{
+}
+
+static int sysmon_dspic_read(sysmon_t *this, uint addr, int *val)
+{
+ ushort data;
+
+ if (dspic_read(addr, &data) == 0){
+ /* To fit into the table range we should add 0x8000 */
+ *val = data + 0x8000;
+ return 0;
+ }
+
+ return -1;
+}
+
+static int sysmon_dspic_read_sgn(sysmon_t *this, uint addr, int *val)
+{
+ ushort data;
+
+ if (dspic_read(addr, &data) == 0){
+ /* To fit into the table range we should add 0x8000 */
+ *val = (signed short)data + 0x8000;
+ return 0;
+ }
+
+ return -1;
+}
+
+static void sysmon_backlight_disable(sysmon_table_t *this)
+{
+#if defined(CONFIG_VIDEO)
+ board_backlight_switch(this->val_valid_alt);
+#endif
+}
+
+int sysmon_post_test(int flags)
+{
+ int res = 0;
+ sysmon_table_t * t;
+ int val;
+
+ for (t = sysmon_table; t < sysmon_table + ARRAY_SIZE(sysmon_table); t++) {
+ t->val_valid = 1;
+ if (t->exec_before)
+ t->exec_before(t);
+
+ if (t->sysmon->read(t->sysmon, t->addr, &val) != 0) {
+ t->val_valid = 0;
+ t->val_valid_alt = 0;
+ post_log(": read failed\n");
+ res = 1;
+ break;
+ }
+
+ if (t->val_valid != 0) {
+ t->val_valid = val >= t->val_min && val <= t->val_max;
+ t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
+ }
+
+ if (t->exec_after)
+ t->exec_after(t);
+
+ if ((!t->val_valid) || (flags)) {
+ post_log("\n\t%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
+ post_log("allowed range");
+ post_log(" %-8s ..", sysmon_unit_value(t, t->val_min));
+ post_log(" %-8s", sysmon_unit_value(t, t->val_max));
+ post_log(" %s", t->val_valid ? "OK" : "FAIL");
+ }
+
+ if (!t->val_valid) {
+ res = 1;
+ break;
+ }
+ }
+ post_log("\n");
+
+ return res;
+}
+#endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */
Code Review / kvmfornfv.git / blobdiff