* LWMON extensions:

  - Splashscreen support
  - modem support
  - sysmon support
  - temperature dependend enabling of LCD

* Allow booting from old "PPCBoot" disk partitions

* Add support for TQM8255 Board / MPC8255 CPU

1 files changed, 330 insertions, 0 deletions

diff --git a/post/sysmon.c b/post/sysmon.c
new file mode 100644
index 0000000..c8fcefc
--- /dev/null
+++ b/post/sysmon.c
@@ -0,0 +1,330 @@
+/*
+ * (C) Copyright 2003
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * 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:
+ * 
+ * Board temperature
+ * Front temperature
+ * +3.3V CPU logic
+ * +5V logic
+ * +12V PCMCIA
+ * +12V CCFL
+ * +5V standby
+ * 
+ * CCFL is not enabled if temperature values are not within allowed ranges
+ *
+ * See the list off all parameters in the sysmon_table below
+ */
+
+#include <post.h>
+#include <watchdog.h>
+#include <i2c.h>
+
+static int sysmon_temp_invalid = 0;
+
+#if CONFIG_POST & CFG_POST_SYSMON
+
+/* #define DEBUG */
+
+#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_lm87_init (sysmon_t * this);
+static void sysmon_pic_init (sysmon_t * this);
+static uint sysmon_i2c_read (sysmon_t * this, uint addr);
+static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr);
+static void sysmon_ccfl_disable (sysmon_table_t * this);
+static void sysmon_ccfl_enable (sysmon_table_t * this);
+
+struct sysmon_s
+{
+	uchar	chip;
+	void	(*init)(sysmon_t *);
+	uint	(*read)(sysmon_t *, uint);
+};
+
+static sysmon_t sysmon_lm87 =
+	{CFG_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read};
+static sysmon_t sysmon_lm87_sgn =
+	{CFG_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read_sgn};
+static sysmon_t sysmon_pic =
+	{CFG_I2C_PICIO_ADDR, sysmon_pic_init, sysmon_i2c_read};
+
+static sysmon_t * sysmon_list[] =
+{
+	&sysmon_lm87,
+	&sysmon_lm87_sgn,
+	&sysmon_pic,
+	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_div;
+	int		unit_min;
+	int		unit_max;
+	uint		val_mask;
+	uint		val_min;
+	uint		val_max;
+	int		val_valid;
+	uint		addr;
+};
+
+static sysmon_table_t sysmon_table[] =
+{
+    {"Board temperature", " C", &sysmon_lm87_sgn, NULL, sysmon_ccfl_disable,
+     1, -128, 127, 0xFF, 0x58, 0xD5, 0, 0x27},
+
+    {"Front temperature", " C", &sysmon_lm87, NULL, sysmon_ccfl_disable,
+     100, -27316, 8984, 0xFF, 0xA4, 0xFC, 0, 0x29},
+
+    {"+3.3V CPU logic", "V", &sysmon_lm87, NULL, NULL,
+     1000, 0, 4386, 0xFF, 0xB6, 0xC9, 0, 0x22},
+
+    {"+5V logic", "V", &sysmon_lm87, NULL, NULL,
+     1000, 0, 6630, 0xFF, 0xB6, 0xCA, 0, 0x23},
+
+    {"+12V PCMCIA", "V", &sysmon_lm87, NULL, NULL,
+     1000, 0, 15460, 0xFF, 0xBC, 0xD0, 0, 0x21},
+
+    {"+12V CCFL", "V", &sysmon_lm87, NULL, sysmon_ccfl_enable,
+     1000, 0, 15900, 0xFF, 0xB6, 0xCA, 0, 0x24},
+
+    {"+5V standby", "V", &sysmon_pic, NULL, NULL,
+     1000, 0, 6040, 0xFF, 0xC8, 0xDE, 0, 0x7C},
+};
+static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
+
+static int conversion_done = 0;
+
+
+int sysmon_init_f (void)
+{
+	sysmon_t ** l;
+	ulong reg;
+
+	/* Power on CCFL, PCMCIA */
+	reg = pic_read  (0x60);
+	reg |= 0x09;
+	pic_write (0x60, reg);
+
+	for (l = sysmon_list; *l; l++)
+	{
+		(*l)->init(*l);
+	}
+	
+	return 0;
+}
+
+void sysmon_reloc (void)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	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];
+	int unit_val =
+	    s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
+	char * p;
+	int dec, frac;
+
+	sprintf(buf, "%+d", unit_val / s->unit_div);
+	
+	frac = (unit_val > 0 ? unit_val : -unit_val) % s->unit_div;
+	p = buf + strlen(buf);
+	
+	dec = s->unit_div;
+	
+	if (dec != 1)
+	{
+		*p++ = '.';
+	}
+	
+	for (dec /= 10; dec != 0; dec /= 10)
+	{
+		*p++ = '0' + frac / dec % 10;
+	}
+	
+	strcpy(p, s->unit_name);
+	
+	return buf;
+}
+
+static void sysmon_lm87_init (sysmon_t * this)
+{
+	uchar val;
+
+	/* Detect LM87 chip */
+	if (i2c_read(this->chip, 0x40, 1, &val, 1) || (val & 0x80) != 0 ||
+	    i2c_read(this->chip, 0x3E, 1, &val, 1) || val != 0x02)
+	{
+		printf("Error: LM87 not found at 0x%02X\n", this->chip);
+		return;
+	}
+	
+	/* Configure pins 5,6 as AIN */
+	val = 0x03;
+	if (i2c_write(this->chip, 0x16, 1, &val, 1))
+	{
+		printf("Error: can't write LM87 config register\n");
+		return;
+	}
+
+	/* Start monitoring */
+	val = 0x01;
+	if (i2c_write(this->chip, 0x40, 1, &val, 1))
+	{
+		printf("Error: can't write LM87 config register\n");
+		return;
+	}
+}
+
+static void sysmon_pic_init (sysmon_t * this)
+{
+}
+
+static uint sysmon_i2c_read (sysmon_t * this, uint addr)
+{
+	uchar val;
+	uint res = i2c_read(this->chip, addr, 1, &val, 1);
+
+	return res == 0 ? val : -1;
+}
+
+static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr)
+{
+	uchar val;
+	return i2c_read(this->chip, addr, 1, &val, 1) == 0 ?
+		128 + (signed char)val : -1;
+}
+
+static void sysmon_ccfl_disable (sysmon_table_t * this)
+{
+	if (!this->val_valid)
+	{
+		sysmon_temp_invalid = 1;
+	}
+}
+
+static void sysmon_ccfl_enable (sysmon_table_t * this)
+{
+	ulong reg;
+
+	if (!sysmon_temp_invalid)
+	{
+		reg = pic_read  (0x60);
+		reg |= 0x02;
+		pic_write (0x60, reg);
+	}
+}
+
+int sysmon_post_test (int flags)
+{
+	DECLARE_GLOBAL_DATA_PTR;
+
+	int res = 0;
+	sysmon_table_t * t;
+	uint val;
+
+	/*
+	 * The A/D conversion on the LM87 sensor takes 300 ms.
+	 */
+	if (! conversion_done)
+	{
+		while (post_time_ms(gd->post_init_f_time) < 300) WATCHDOG_RESET ();
+		conversion_done = 1;
+	}
+
+	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);
+		t->val_valid = val >= t->val_min && val <= t->val_max;
+
+		if (t->exec_after)
+		{
+			t->exec_after(t);
+		}
+
+#ifndef DEBUG
+		if (!t->val_valid)
+#endif
+		{
+			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 */