/*
* /dev/console for Hitachi SH 703X
*
* The SH doesn't have a designated console device. Therefore we "alias"
* another device as /dev/console and revector all calls to /dev/console
* to this device.
*
* This approach is similar to installing a sym-link from one device to
* another device. If rtems once will support sym-links for devices files,
* this implementation could be dropped.
*
* Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de)
*
* COPYRIGHT (c) 1997-1998, FAW Ulm, Germany
*
* 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.
*
*
* COPYRIGHT (c) 1998.
* On-Line Applications Research Corporation (OAR).
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.com/license/LICENSE.
*
* $Id$
*/
#include <bsp.h>
#include <rtems.h>
#include <rtems/libio.h>
#include <rtems/iosupp.h>
#ifndef BSP_CONSOLE_DEVNAME
#error Missing BSP_CONSOLE_DEVNAME
#endif
static rtems_driver_name_t low_level_device_info;
/* console_initialize
*
* This routine initializes the console IO driver.
*
* Input parameters: NONE
*
* Output parameters: NONE
*
* Return values:
*/
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
rtems_device_driver status;
status = rtems_io_register_name(
"/dev/console",
major,
(rtems_device_minor_number) 0
);
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred(status);
status = rtems_io_lookup_name( BSP_CONSOLE_DEVNAME, &low_level_device_info );
if (status != RTEMS_SUCCESSFUL)
rtems_fatal_error_occurred(status);
return RTEMS_SUCCESSFUL;
}
/*
* Open entry point
*/
rtems_device_driver console_open(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_io_open( low_level_device_info.major,
low_level_device_info.minor,
arg );
}
/*
* Close entry point
*/
rtems_device_driver console_close(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_io_close( low_level_device_info.major,
low_level_device_info.minor,
arg );
}
/*
* read bytes from the serial port. We only have stdin.
*/
rtems_device_driver console_read(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_io_read( low_level_device_info.major,
low_level_device_info.minor,
arg );
}
/*
* write bytes to the serial port. Stdout and stderr are the same.
*/
rtems_device_driver console_write(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_io_write( low_level_device_info.major,
low_level_device_info.minor,
arg );
}
/*
* IO Control entry point
*/
rtems_device_driver console_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_io_control( low_level_device_info.major,
low_level_device_info.minor,
arg );
}
