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Diffstat (limited to 'post/board/lwmon5/sysmon.c')
| -rw-r--r-- | post/board/lwmon5/sysmon.c | 265 |
1 files changed, 265 insertions, 0 deletions
diff --git a/post/board/lwmon5/sysmon.c b/post/board/lwmon5/sysmon.c new file mode 100644 index 000000000..0eae4c151 --- /dev/null +++ b/post/board/lwmon5/sysmon.c @@ -0,0 +1,265 @@ +/* + * (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 <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: + * + * Temperature -40 .. +85 C + * +5V +4.75 .. +5.25 V + * +5V standby +4.75 .. +5.25 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 <post.h> +#include <watchdog.h> +#include <i2c.h> + +#if CONFIG_POST & CFG_POST_SYSMON + +DECLARE_GLOBAL_DATA_PTR; + +#define DEFAULT_BRIGHTNESS 50 + +/* from dspic.c */ +extern int dspic_read(ushort reg); +/* from fpga.c */ +extern void fpga_backlight_enable(int v); + +static int sysmon_temp_invalid; + +#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_dspic_init (sysmon_t * this); +static int sysmon_dspic_read (sysmon_t * this, uint addr); +static void sysmon_backlight_disable (sysmon_table_t * this); +static void sysmon_backlight_enable (sysmon_table_t * this); + +struct sysmon_s +{ + uchar chip; + void (*init)(sysmon_t *); + int (*read)(sysmon_t *, uint); +}; + +static sysmon_t sysmon_dspic = + {CFG_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, 0x8000-40, 0x8000+85, 0, + 0x8000-30, 0x8000+80, 0, 0x12BC}, + + {"+ 5 V", "V", &sysmon_dspic, NULL, NULL, + 100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0, + 0x8000+4750, 0x8000+5250, 0, 0x12CA}, + + {"+ 5 V standby", "V", &sysmon_dspic, NULL, sysmon_backlight_enable, + 100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0, + 0x8000+4750, 0x8000+5250, 0, 0x12C6}, +}; +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 (!this->val_valid_alt) + sysmon_temp_invalid = 1; +} + +static void sysmon_backlight_enable (sysmon_table_t * this) +{ + char * param; + int rc; + + if (!sysmon_temp_invalid) { + param = getenv("brightness"); + rc = param ? simple_strtol(param, NULL, 10) : -1; + if (rc >= 0) + fpga_backlight_enable(rc); + else + fpga_backlight_enable(DEFAULT_BRIGHTNESS); + } +} + +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 & CFG_POST_SYSMON */ +#endif /* CONFIG_POST */ |