forked from Imagelibrary/rtems
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/**
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* @file
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*
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* @ingroup raspberrypi_console
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*
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* @brief console select
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*/
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/*
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* Copyright (c) 2015 Yang Qiao
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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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*
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* http://www.rtems.org/license/LICENSE
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*
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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 <string.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 "../../shared/dev/serial/legacy-console.h"
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#include <bsp/rpi-fb.h>
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rtems_device_minor_number BSPPrintkPort = 0;
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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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const char *opt;
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Console_Port_Minor = BSP_CONSOLE_UART0;
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BSPPrintkPort = BSP_CONSOLE_UART0;
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opt = rpi_cmdline_get_arg( "--console=" );
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if ( opt ) {
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if ( strncmp( opt, "fbcons", sizeof( "fbcons" ) - 1 ) == 0 ) {
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if ( rpi_video_is_initialized() > 0 ) {
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Console_Port_Minor = BSP_CONSOLE_FB;
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BSPPrintkPort = BSP_CONSOLE_FB;
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}
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}
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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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