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/*
* (C) Copyright 2000
* Paolo Scaffardi, AIRVENT SAM s.p.a - RIMINI(ITALY), arsenio@tin.it
*
* 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 <config.h>
#include <common.h>
#include <stdarg.h>
#include <malloc.h>
#include <devices.h>
#include <serial.h>
#ifdef CONFIG_LOGBUFFER
#include <logbuff.h>
#endif
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
#include <i2c.h>
#endif
DECLARE_GLOBAL_DATA_PTR;
static device_t devs;
device_t *stdio_devices[] = { NULL, NULL, NULL };
char *stdio_names[MAX_FILES] = { "stdin", "stdout", "stderr" };
#if defined(CONFIG_SPLASH_SCREEN) && !defined(CONFIG_SYS_DEVICE_NULLDEV)
#define CONFIG_SYS_DEVICE_NULLDEV 1
#endif
#ifdef CONFIG_SYS_DEVICE_NULLDEV
void nulldev_putc(const char c)
{
/* nulldev is empty! */
}
void nulldev_puts(const char *s)
{
/* nulldev is empty! */
}
int nulldev_input(void)
{
/* nulldev is empty! */
return 0;
}
#endif
/**************************************************************************
* SYSTEM DRIVERS
**************************************************************************
*/
static void drv_system_init (void)
{
device_t dev;
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, "serial");
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
#ifdef CONFIG_SERIAL_SOFTWARE_FIFO
dev.putc = serial_buffered_putc;
dev.puts = serial_buffered_puts;
dev.getc = serial_buffered_getc;
dev.tstc = serial_buffered_tstc;
#else
dev.putc = serial_putc;
dev.puts = serial_puts;
dev.getc = serial_getc;
dev.tstc = serial_tstc;
#endif
device_register (&dev);
#ifdef CONFIG_SYS_DEVICE_NULLDEV
memset (&dev, 0, sizeof (dev));
strcpy (dev.name, "nulldev");
dev.flags = DEV_FLAGS_OUTPUT | DEV_FLAGS_INPUT | DEV_FLAGS_SYSTEM;
dev.putc = nulldev_putc;
dev.puts = nulldev_puts;
dev.getc = nulldev_input;
dev.tstc = nulldev_input;
device_register (&dev);
#endif
}
/**************************************************************************
* DEVICES
**************************************************************************
*/
struct list_head* device_get_list(void)
{
return &(devs.list);
}
device_t* device_get_by_name(char* name)
{
struct list_head *pos;
device_t *dev;
if(!name)
return NULL;
list_for_each(pos, &(devs.list)) {
dev = list_entry(pos, device_t, list);
if(strcmp(dev->name, name) == 0)
return dev;
}
return NULL;
}
device_t* device_clone(device_t *dev)
{
device_t *_dev;
if(!dev)
return NULL;
_dev = calloc(1, sizeof(device_t));
if(!_dev)
return NULL;
memcpy(_dev, dev, sizeof(device_t));
strncpy(_dev->name, dev->name, 16);
return _dev;
}
int device_register (device_t * dev)
{
device_t *_dev;
_dev = device_clone(dev);
if(!_dev)
return -1;
list_add_tail(&(_dev->list), &(devs.list));
return 0;
}
/* deregister the device "devname".
* returns 0 if success, -1 if device is assigned and 1 if devname not found
*/
#ifdef CONFIG_SYS_DEVICE_DEREGISTER
int device_deregister(char *devname)
{
int l;
struct list_head *pos;
device_t *dev;
char temp_names[3][8];
dev = device_get_by_name(devname);
if(!dev) /* device not found */
return -1;
/* get stdio devices (ListRemoveItem changes the dev list) */
for (l=0 ; l< MAX_FILES; l++) {
if (stdio_devices[l] == dev) {
/* Device is assigned -> report error */
return -1;
}
memcpy (&temp_names[l][0],
stdio_devices[l]->name,
sizeof(stdio_devices[l]->name));
}
list_del(&(dev->list));
/* reassign Device list */
list_for_each(pos, &(devs.list)) {
dev = list_entry(pos, device_t, list);
for (l=0 ; l< MAX_FILES; l++) {
if(strcmp(dev->name, temp_names[l]) == 0)
stdio_devices[l] = dev;
}
}
return 0;
}
#endif /* CONFIG_SYS_DEVICE_DEREGISTER */
int devices_init (void)
{
#ifndef CONFIG_ARM /* already relocated for current ARM implementation */
ulong relocation_offset = gd->reloc_off;
int i;
/* relocate device name pointers */
for (i = 0; i < (sizeof (stdio_names) / sizeof (char *)); ++i) {
stdio_names[i] = (char *) (((ulong) stdio_names[i]) +
relocation_offset);
}
#endif
/* Initialize the list */
INIT_LIST_HEAD(&(devs.list));
#if defined(CONFIG_HARD_I2C) || defined(CONFIG_SOFT_I2C)
i2c_init (CONFIG_SYS_I2C_SPEED, CONFIG_SYS_I2C_SLAVE);
#endif
#ifdef CONFIG_LCD
drv_lcd_init ();
#endif
#if defined(CONFIG_VIDEO) || defined(CONFIG_CFB_CONSOLE)
drv_video_init ();
#endif
#ifdef CONFIG_KEYBOARD
drv_keyboard_init ();
#endif
#ifdef CONFIG_LOGBUFFER
drv_logbuff_init ();
#endif
drv_system_init ();
#ifdef CONFIG_SERIAL_MULTI
serial_devices_init ();
#endif
#ifdef CONFIG_USB_TTY
drv_usbtty_init ();
#endif
#ifdef CONFIG_NETCONSOLE
drv_nc_init ();
#endif
return (0);
}
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