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https://github.com/AsahiLinux/u-boot
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313 lines
7.1 KiB
C
313 lines
7.1 KiB
C
/*
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* (C) Copyright 2003
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* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
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*
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* See file CREDITS for list of people who contributed to this
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* project.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of
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* the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
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* MA 02111-1307 USA
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*/
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#include <post.h>
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#include <common.h>
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/*
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* SYSMON test
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*
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* This test performs the system hardware monitoring.
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* The test passes when all the following voltages and temperatures
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* are within allowed ranges:
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*
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* Board temperature
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* Front temperature
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* +3.3V CPU logic
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* +5V logic
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* +12V PCMCIA
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* +12V CCFL
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* +5V standby
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*
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* CCFL is not enabled if temperature values are not within allowed ranges
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*
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* See the list off all parameters in the sysmon_table below
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*/
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#include <post.h>
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#include <watchdog.h>
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#include <i2c.h>
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#if CONFIG_POST & CONFIG_SYS_POST_SYSMON
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DECLARE_GLOBAL_DATA_PTR;
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static int sysmon_temp_invalid = 0;
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/* #define DEBUG */
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typedef struct sysmon_s sysmon_t;
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typedef struct sysmon_table_s sysmon_table_t;
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static void sysmon_lm87_init (sysmon_t * this);
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static void sysmon_pic_init (sysmon_t * this);
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static uint sysmon_i2c_read (sysmon_t * this, uint addr);
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static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr);
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static void sysmon_ccfl_disable (sysmon_table_t * this);
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static void sysmon_ccfl_enable (sysmon_table_t * this);
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struct sysmon_s
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{
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uchar chip;
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void (*init)(sysmon_t *);
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uint (*read)(sysmon_t *, uint);
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};
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static sysmon_t sysmon_lm87 =
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{CONFIG_SYS_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read};
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static sysmon_t sysmon_lm87_sgn =
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{CONFIG_SYS_I2C_SYSMON_ADDR, sysmon_lm87_init, sysmon_i2c_read_sgn};
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static sysmon_t sysmon_pic =
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{CONFIG_SYS_I2C_PICIO_ADDR, sysmon_pic_init, sysmon_i2c_read};
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static sysmon_t * sysmon_list[] =
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{
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&sysmon_lm87,
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&sysmon_lm87_sgn,
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&sysmon_pic,
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NULL
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};
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struct sysmon_table_s
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{
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char * name;
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char * unit_name;
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sysmon_t * sysmon;
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void (*exec_before)(sysmon_table_t *);
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void (*exec_after)(sysmon_table_t *);
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int unit_precision;
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int unit_div;
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int unit_min;
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int unit_max;
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uint val_mask;
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uint val_min;
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uint val_max;
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int val_valid;
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uint val_min_alt;
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uint val_max_alt;
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int val_valid_alt;
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uint addr;
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};
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static sysmon_table_t sysmon_table[] =
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{
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{"Board temperature", " C", &sysmon_lm87_sgn, NULL, sysmon_ccfl_disable,
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1, 1, -128, 127, 0xFF, 0x58, 0xD5, 0, 0x6C, 0xC6, 0, 0x27},
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{"Front temperature", " C", &sysmon_lm87, NULL, sysmon_ccfl_disable,
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1, 100, -27316, 8984, 0xFF, 0xA4, 0xFC, 0, 0xB2, 0xF1, 0, 0x29},
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{"+3.3V CPU logic", "V", &sysmon_lm87, NULL, NULL,
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100, 1000, 0, 4386, 0xFF, 0xB6, 0xC9, 0, 0xB6, 0xC9, 0, 0x22},
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{"+ 5 V logic", "V", &sysmon_lm87, NULL, NULL,
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100, 1000, 0, 6630, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x23},
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{"+12 V PCMCIA", "V", &sysmon_lm87, NULL, NULL,
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100, 1000, 0, 15460, 0xFF, 0xBC, 0xD0, 0, 0xBC, 0xD0, 0, 0x21},
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{"+12 V CCFL", "V", &sysmon_lm87, NULL, sysmon_ccfl_enable,
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100, 1000, 0, 15900, 0xFF, 0xB6, 0xCA, 0, 0xB6, 0xCA, 0, 0x24},
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{"+ 5 V standby", "V", &sysmon_pic, NULL, NULL,
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100, 1000, 0, 6040, 0xFF, 0xC8, 0xDE, 0, 0xC8, 0xDE, 0, 0x7C},
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};
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static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
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static int conversion_done = 0;
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int sysmon_init_f (void)
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{
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sysmon_t ** l;
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ulong reg;
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/* Power on CCFL, PCMCIA */
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reg = pic_read (0x60);
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reg |= 0x09;
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pic_write (0x60, reg);
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for (l = sysmon_list; *l; l++) {
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(*l)->init(*l);
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}
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return 0;
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}
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void sysmon_reloc (void)
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{
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/* Do nothing for now, sysmon_reloc() is required by the sysmon post */
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}
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static char *sysmon_unit_value (sysmon_table_t *s, uint val)
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{
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static char buf[32];
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int unit_val =
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s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
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char *p, sign;
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int dec, frac;
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if (val == -1) {
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return "I/O ERROR";
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}
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if (unit_val < 0) {
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sign = '-';
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unit_val = -unit_val;
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} else {
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sign = '+';
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}
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p = buf + sprintf(buf, "%c%2d", sign, unit_val / s->unit_div);
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frac = unit_val % s->unit_div;
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frac /= (s->unit_div / s->unit_precision);
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dec = s->unit_precision;
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if (dec != 1) {
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*p++ = '.';
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}
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for (dec /= 10; dec != 0; dec /= 10) {
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*p++ = '0' + (frac / dec) % 10;
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}
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strcpy(p, s->unit_name);
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return buf;
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}
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static void sysmon_lm87_init (sysmon_t * this)
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{
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uchar val;
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/* Detect LM87 chip */
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if (i2c_read(this->chip, 0x40, 1, &val, 1) || (val & 0x80) != 0 ||
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i2c_read(this->chip, 0x3E, 1, &val, 1) || val != 0x02) {
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printf("Error: LM87 not found at 0x%02X\n", this->chip);
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return;
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}
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/* Configure pins 5,6 as AIN */
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val = 0x03;
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if (i2c_write(this->chip, 0x16, 1, &val, 1)) {
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printf("Error: can't write LM87 config register\n");
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return;
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}
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/* Start monitoring */
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val = 0x01;
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if (i2c_write(this->chip, 0x40, 1, &val, 1)) {
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printf("Error: can't write LM87 config register\n");
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return;
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}
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}
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static void sysmon_pic_init (sysmon_t * this)
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{
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}
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static uint sysmon_i2c_read (sysmon_t * this, uint addr)
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{
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uchar val;
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uint res = i2c_read(this->chip, addr, 1, &val, 1);
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return res == 0 ? val : -1;
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}
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static uint sysmon_i2c_read_sgn (sysmon_t * this, uint addr)
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{
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uchar val;
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return i2c_read(this->chip, addr, 1, &val, 1) == 0 ?
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128 + (signed char)val : -1;
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}
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static void sysmon_ccfl_disable (sysmon_table_t * this)
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{
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if (!this->val_valid_alt) {
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sysmon_temp_invalid = 1;
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}
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}
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static void sysmon_ccfl_enable (sysmon_table_t * this)
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{
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ulong reg;
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if (!sysmon_temp_invalid) {
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reg = pic_read (0x60);
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reg |= 0x06;
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pic_write (0x60, reg);
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}
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}
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int sysmon_post_test (int flags)
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{
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int res = 0;
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sysmon_table_t * t;
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uint val;
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/*
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* The A/D conversion on the LM87 sensor takes 300 ms.
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*/
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if (! conversion_done) {
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while (post_time_ms(gd->post_init_f_time) < 300) WATCHDOG_RESET ();
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conversion_done = 1;
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}
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for (t = sysmon_table; t < sysmon_table + sysmon_table_size; t ++) {
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if (t->exec_before) {
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t->exec_before(t);
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}
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val = t->sysmon->read(t->sysmon, t->addr);
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if (val != -1) {
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t->val_valid = val >= t->val_min && val <= t->val_max;
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t->val_valid_alt = val >= t->val_min_alt && val <= t->val_max_alt;
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} else {
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t->val_valid = 0;
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t->val_valid_alt = 0;
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}
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if (t->exec_after) {
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t->exec_after(t);
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}
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if ((!t->val_valid) || (flags & POST_MANUAL)) {
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printf("%-17s = %-10s ", t->name, sysmon_unit_value(t, val));
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printf("allowed range");
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printf(" %-8s ..", sysmon_unit_value(t, t->val_min));
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printf(" %-8s", sysmon_unit_value(t, t->val_max));
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printf(" %s\n", t->val_valid ? "OK" : "FAIL");
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}
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if (!t->val_valid) {
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res = -1;
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}
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}
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return res;
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}
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#endif /* CONFIG_POST & CONFIG_SYS_POST_SYSMON */
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