/* * (C) Copyright 2008 Dmitry Rakhchev, EmCraft Systems, rda@emcraft.com * * Developed for DENX Software Engineering GmbH * * 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 #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" enviroment 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); #define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off) #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); static void sysmon_backlight_disable (sysmon_table_t * this); struct sysmon_s { uchar chip; void (*init)(sysmon_t *); int (*read)(sysmon_t *, uint); }; static sysmon_t sysmon_dspic = {CONFIG_SYS_I2C_DSPIC_IO_ADDR, sysmon_dspic_init, sysmon_dspic_read}; 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, }, }; static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]); int sysmon_init_f (void) { sysmon_t ** l; for (l = sysmon_list; *l; l++) (*l)->init(*l); return 0; } void sysmon_reloc (void) { 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]; 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 res = dspic_read(addr); /* To fit into the table range we should add 0x8000 */ return (res == -1) ? -1 : (res + 0x8000); } 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 + sysmon_table_size; t ++) { if (t->exec_before) t->exec_before(t); val = t->sysmon->read(t->sysmon, t->addr); if (val != -1) { 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; } else { t->val_valid = 0; t->val_valid_alt = 0; } if (t->exec_after) t->exec_after(t); if ((!t->val_valid) || (flags & POST_MANUAL)) { 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 & CONFIG_SYS_POST_SYSMON */