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/**
* @file
*
* @ingroup Console
*
* @brief Generic libchip console select
*/
/*
* This file contains a routine to select the
* console based upon a number of criteria.
*
* COPYRIGHT (c) 2011.
* 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.org/license/LICENSE.
*/
#include <bsp.h>
#include <bsp/fatal.h>
#include <rtems/libio.h>
#include <stdlib.h>
#include <assert.h>
#include <termios.h>
#include <rtems/termiostypes.h>
#include <libchip/serial.h>
#include "console_private.h"
/*
* Method to return true if the device associated with the
* minor number probs available.
*/
static bool bsp_Is_Available( rtems_device_minor_number minor )
{
console_tbl *cptr = Console_Port_Tbl[minor];
/*
* First perform the configuration dependent probe, then the
* device dependent probe
*/
if ((!cptr->deviceProbe || cptr->deviceProbe(minor)) &&
cptr->pDeviceFns->deviceProbe(minor)) {
return true;
}
return false;
}
/*
* Method to return the first available device.
*/
static rtems_device_minor_number bsp_First_Available_Device( void )
{
rtems_device_minor_number minor;
for (minor=0; minor < Console_Port_Count ; minor++) {
console_tbl *cptr = Console_Port_Tbl[minor];
/*
* First perform the configuration dependent probe, then the
* device dependent probe
*/
if ((!cptr->deviceProbe || cptr->deviceProbe(minor)) &&
cptr->pDeviceFns->deviceProbe(minor)) {
return minor;
}
}
/*
* Error No devices were found. We will want to bail here.
*/
bsp_fatal(BSP_FATAL_CONSOLE_NO_DEV);
}
void bsp_console_select(void)
{
/*
* Reset Console_Port_Minor and
* BSPPrintkPort here if desired.
*
* This default version allows the bsp to set these
* values at creation and will not touch them again
* unless the selected port number is not available.
*/
/*
* If the device that was selected isn't available then
* let the user know and select the first available device.
*/
if ( !bsp_Is_Available( Console_Port_Minor ) ) {
Console_Port_Minor = bsp_First_Available_Device();
}
}
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