New file. This is a simple termios console driver which is sufficient

to do polled IO on a single port with VERY little support code.

c/src/lib/libbsp/shared/console-polled.c

@@ -0,0 +1,148 @@
+/*
+ *  This file contains the hardware specific portions of the TTY driver
+ *  for the serial ports on the erc32.
+ *
+ *  COPYRIGHT (c) 1989-1997.
+ *  On-Line Applications Research Corporation (OAR).
+ *  Copyright assigned to U.S. Government, 1994.
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <bsp.h>
+#include <rtems/libio.h>
+#include <stdlib.h>
+#include <assert.h>
+
+/* external prototypes for monitor interface routines */
+
+void console_outbyte_polled(
+  int  port,
+  char ch
+);
+
+int console_inbyte_nonblocking(
+  int port
+);
+
+/*
+ *  Console Termios Support Entry Points
+ *
+ */
+
+int console_write_support (
+  int minor,
+  const char *bufarg,
+  int len
+)
+{
+  int nwrite = 0;
+  const char *buf = bufarg;
+
+  while (nwrite < len) {
+    console_outbyte_polled( minor, *buf++ );
+    nwrite++;
+  }
+  return nwrite;
+}
+
+/*
+ *  Console Device Driver Entry Points
+ *
+ */
+ 
+rtems_device_driver console_initialize(
+  rtems_device_major_number  major,
+  rtems_device_minor_number  minor,
+  void                      *arg
+)
+{
+  rtems_status_code status;
+
+  rtems_termios_initialize();
+
+  /*
+   *  Register Device Names
+   */
+
+  status = rtems_io_register_name( "/dev/console", major, 0 );
+  if (status != RTEMS_SUCCESSFUL)
+    rtems_fatal_error_occurred(status);
+
+  return RTEMS_SUCCESSFUL;
+}
+
+rtems_device_driver console_open(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  rtems_status_code sc;
+  static const rtems_termios_callbacks pollCallbacks = {
+    NULL,                        /* firstOpen */
+    NULL,                        /* lastClose */
+    console_inbyte_nonblocking,  /* pollRead */
+    console_write_support,       /* write */
+    NULL,                        /* setAttributes */
+    NULL,                        /* stopRemoteTx */
+    NULL,                        /* startRemoteTx */
+    0                            /* outputUsesInterrupts */
+  };
+
+
+  assert( minor <= 1 );
+  if ( minor > 2 )
+    return RTEMS_INVALID_NUMBER;
+ 
+  sc = rtems_termios_open (major, minor, arg, &pollCallbacks );
+
+  return RTEMS_SUCCESSFUL;
+}
+ 
+rtems_device_driver console_close(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_close (arg);
+}
+ 
+rtems_device_driver console_read(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_read (arg);
+}
+ 
+rtems_device_driver console_write(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_write (arg);
+}
+ 
+rtems_device_driver console_control(
+  rtems_device_major_number major,
+  rtems_device_minor_number minor,
+  void                    * arg
+)
+{
+  return rtems_termios_ioctl (arg);
+}
+
+void console_reserve_resources(
+  rtems_configuration_table *configuration
+)
+{
+  rtems_termios_reserve_resources( configuration, 1 );
+}