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