/* * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com * * Developed for DENX Software Engineering GmbH * * SPDX-License-Identifier: GPL-2.0+ */ #include #include /* * 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 #include #include #if defined(CONFIG_VIDEO) #include #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 */