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/**
* @file
*
* @ingroup raspberrypi_console
*
* @brief console select
*/
/*
* Copyright (c) 2015 Yang Qiao
*
* 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 <string.h>
#include <assert.h>
#include <termios.h>
#include <rtems/termiostypes.h>
#include <libchip/serial.h>
#include "../../shared/dev/serial/legacy-console.h"
#include <bsp/rpi-fb.h>
rtems_device_minor_number BSPPrintkPort = 0;
/*
* 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.
*/
const char *opt;
Console_Port_Minor = BSP_CONSOLE_UART0;
BSPPrintkPort = BSP_CONSOLE_UART0;
opt = rpi_cmdline_get_arg( "--console=" );
if ( opt ) {
if ( strncmp( opt, "fbcons", sizeof( "fbcons" ) - 1 ) == 0 ) {
if ( rpi_video_is_initialized() > 0 ) {
Console_Port_Minor = BSP_CONSOLE_FB;
BSPPrintkPort = BSP_CONSOLE_FB;
}
}
}
/*
* 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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