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|
/*===============================================================*\
| Project: RTEMS generic MPC83xx BSP |
+-----------------------------------------------------------------+
| This file has been adapted from the ep1a BSP to MPC83xx by |
| Thomas Doerfler <Thomas.Doerfler@embedded-brains.de> |
| Copyright (c) 2007 |
| Embedded Brains GmbH |
| Obere Lagerstr. 30 |
| D-82178 Puchheim |
| Germany |
| rtems@embedded-brains.de |
| |
| See the other copyright notice below for the original parts. |
+-----------------------------------------------------------------+
| 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. |
| |
+-----------------------------------------------------------------+
| this file contains the console driver |
\*===============================================================*/
/* derived from: */
/*
* This file contains the TTY driver for the ep1a
*
* This driver uses the termios pseudo driver.
*
* COPYRIGHT (c) 1989-1999.
* 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/libio.h>
#include <stdlib.h>
#include <assert.h>
#include <termios.h>
#include "console.h"
#include <rtems/bspIo.h>
/*
* Load configuration table
*/
#include "config.c"
#define NUM_CONSOLE_PORTS (sizeof(Console_Port_Tbl)/sizeof(console_tbl))
console_data Console_Port_Data[NUM_CONSOLE_PORTS];
unsigned long Console_Port_Count;
rtems_device_minor_number Console_Port_Minor;
rtems_boolean Console_Is_Initialized = FALSE;
/* PAGE
*
* console_open
*
* open a port as a termios console.
*
*/
rtems_device_driver console_open(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
rtems_status_code status;
rtems_libio_open_close_args_t *args = arg;
rtems_termios_callbacks Callbacks;
console_fns *c;
/*
* Verify the port number is valid.
*/
if(minor>Console_Port_Count)
{
return RTEMS_INVALID_NUMBER;
}
/*
* open the port as a termios console driver.
*/
c = Console_Port_Tbl[minor].pDeviceFns;
Callbacks.firstOpen = c->deviceFirstOpen;
Callbacks.lastClose = c->deviceLastClose;
Callbacks.pollRead = c->deviceRead;
Callbacks.write = c->deviceWrite;
Callbacks.setAttributes = c->deviceSetAttributes;
Callbacks.stopRemoteTx =
Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx;
Callbacks.startRemoteTx =
Console_Port_Tbl[minor].pDeviceFlow->deviceStartRemoteTx;
Callbacks.outputUsesInterrupts = c->deviceOutputUsesInterrupts;
status = rtems_termios_open ( major, minor, arg, &Callbacks);
Console_Port_Data[minor].termios_data = args->iop->data1;
return status;
}
rtems_device_driver console_close(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
rtems_libio_open_close_args_t *args = arg;
if((args->iop->flags&LIBIO_FLAGS_READ) &&
Console_Port_Tbl[minor].pDeviceFlow &&
Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx)
{
Console_Port_Tbl[minor].pDeviceFlow->deviceStopRemoteTx(minor);
}
return rtems_termios_close (arg);
}
rtems_device_driver console_read(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_read (arg);
}
rtems_device_driver console_write(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_write (arg);
}
rtems_device_driver console_control(
rtems_device_major_number major,
rtems_device_minor_number minor,
void * arg
)
{
return rtems_termios_ioctl (arg);
}
/* PAGE
*
* console_initialize
*
* Routine called to initialize the console device driver.
*/
rtems_device_driver console_initialize(
rtems_device_major_number major,
rtems_device_minor_number minor,
void *arg
)
{
rtems_status_code status;
/*
* initialize the termio interface.
*/
rtems_termios_initialize();
Console_Port_Count=NUM_CONSOLE_PORTS;
for(minor=0;
minor<Console_Port_Count;
minor++)
{
/*
* transfer the real internal bus frequency into the
* console port table
*/
Console_Port_Tbl[minor].ulClock = BSP_bus_frequency;
/*
* First perform the configuration dependant probe, then the
* device dependant probe
*/
if((!Console_Port_Tbl[minor].deviceProbe ||
Console_Port_Tbl[minor].deviceProbe(minor)) &&
Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor))
{
/*
* Use this device for the console
*/
break;
}
}
if(minor==Console_Port_Count)
{
/*
* Failed to find a working device
*/
rtems_fatal_error_occurred(RTEMS_IO_ERROR);
}
Console_Port_Minor=minor;
/*
* Register Device Names
*/
status = rtems_io_register_name("/dev/console",
major,
Console_Port_Minor );
if (status != RTEMS_SUCCESSFUL)
{
rtems_fatal_error_occurred(status);
}
if ( Console_Port_Tbl[Console_Port_Minor].pDeviceFns->deviceInitialize ) {
Console_Port_Tbl[Console_Port_Minor]
.pDeviceFns->deviceInitialize(Console_Port_Minor);
Console_Is_Initialized = TRUE;
}
for(minor++;minor<Console_Port_Count;minor++)
{
/*
* First perform the configuration dependant probe, then the
* device dependant probe
*/
if((!Console_Port_Tbl[minor].deviceProbe ||
Console_Port_Tbl[minor].deviceProbe(minor)) &&
Console_Port_Tbl[minor].pDeviceFns->deviceProbe(minor))
{
status = rtems_io_register_name(
Console_Port_Tbl[minor].sDeviceName,
major,
minor );
if (status != RTEMS_SUCCESSFUL)
{
rtems_fatal_error_occurred(status);
}
/*
* Initialize the hardware device.
*/
if ( Console_Port_Tbl[minor].pDeviceFns->deviceInitialize )
Console_Port_Tbl[minor].pDeviceFns->deviceInitialize( minor);
}
}
return RTEMS_SUCCESSFUL;
}
void debug_putc_onlcr(const char c)
{
uint32_t Irql;
if (Console_Is_Initialized) {
rtems_interrupt_disable(Irql);
Console_Port_Tbl[Console_Port_Minor].pDeviceFns->
deviceWritePolled(Console_Port_Minor,c);
rtems_interrupt_enable(Irql);
}
}
BSP_output_char_function_type BSP_output_char = debug_putc_onlcr;
/* const char arg to be compatible with BSP_output_char decl. */
|
