forked from Imagelibrary/rtems
d5cc923fea
Add a simple Termios console driver using a table for statically registered devices used in console_initialize() and dynamic installation via console_device_install().
102 lines
2.3 KiB
C
102 lines
2.3 KiB
C
/*
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* Copyright (c) 2014 embedded brains GmbH. All rights reserved.
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*
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* embedded brains GmbH
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* Dornierstr. 4
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* 82178 Puchheim
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* Germany
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* <rtems@embedded-brains.de>
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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/console-termios.h>
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#include <bsp/fatal.h>
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#include <rtems/console.h>
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static rtems_interrupt_lock console_lock =
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RTEMS_INTERRUPT_LOCK_INITIALIZER( "console" );
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static rtems_device_major_number console_major = UINT32_MAX;
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static rtems_device_minor_number console_minor;
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rtems_status_code console_device_install(
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const char *device_file,
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const rtems_termios_device_handler *handler,
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const rtems_termios_device_flow *flow,
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rtems_termios_device_context *context
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)
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{
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rtems_interrupt_lock_context lock_context;
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rtems_device_minor_number minor;
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rtems_interrupt_lock_acquire( &console_lock, &lock_context );
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minor = console_minor;
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++console_minor;
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rtems_interrupt_lock_release( &console_lock, &lock_context );
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return rtems_termios_device_install(
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device_file,
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console_major,
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minor,
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handler,
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flow,
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context
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);
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}
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bool console_device_probe_default(rtems_termios_device_context *context)
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{
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(void) context;
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return true;
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}
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rtems_device_driver console_initialize(
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rtems_device_major_number major,
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rtems_device_minor_number minor,
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void *arg
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)
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{
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bool console_device_done = false;
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rtems_termios_initialize();
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for ( minor = 0; minor < console_device_count; ++minor ) {
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const console_device *ctx = &console_device_table[ minor ];
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rtems_status_code sc;
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if ( ( *ctx->probe )( ctx->context ) ) {
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sc = rtems_termios_device_install(
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ctx->device_file,
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major,
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minor,
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ctx->handler,
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ctx->flow,
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ctx->context
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);
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if ( sc != RTEMS_SUCCESSFUL ) {
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bsp_fatal( BSP_FATAL_CONSOLE_INSTALL_0 );
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}
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if ( !console_device_done ) {
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console_device_done = true;
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sc = rtems_io_register_name( CONSOLE_DEVICE_NAME, major, minor );
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if ( sc != RTEMS_SUCCESSFUL ) {
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bsp_fatal( BSP_FATAL_CONSOLE_INSTALL_1 );
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}
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}
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}
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}
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console_major = major;
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console_minor = minor;
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return RTEMS_SUCCESSFUL;
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}
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