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-rw-r--r--post/board/lwmon5/sysmon.c265
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diff --git a/post/board/lwmon5/sysmon.c b/post/board/lwmon5/sysmon.c
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+++ b/post/board/lwmon5/sysmon.c
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+/*
+ * (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 */