termios: Use IMFS nodes for new Termios devices

This makes the new Termios devices independent of device major/minor
numbers.  It enables BSP independent Termios device drivers which may
reside in the cpukit domain.  These drivers require an IMFS and do not
work with the device file system.  However, the device file system
should go away in the future.

1 files changed, 3 insertions, 38 deletions

diff --git a/c/src/lib/libbsp/shared/console-termios-init.c b/c/src/lib/libbsp/shared/console-termios-init.c
index 83d14d15fa..a01a75abf2 100644
--- a/c/src/lib/libbsp/shared/console-termios-init.c
+++ b/c/src/lib/libbsp/shared/console-termios-init.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014 embedded brains GmbH.  All rights reserved.
+ * Copyright (c) 2014, 2016 embedded brains GmbH.  All rights reserved.
  *
  *  embedded brains GmbH
  *  Dornierstr. 4
@@ -17,36 +17,7 @@
 
 #include <rtems/console.h>
 
-RTEMS_INTERRUPT_LOCK_DEFINE( static, console_lock, "console" )
-
-static rtems_device_major_number console_major = UINT32_MAX;
-
-static rtems_device_minor_number console_minor;
-
-rtems_status_code console_device_install(
-  const char                         *device_file,
-  const rtems_termios_device_handler *handler,
-  const rtems_termios_device_flow    *flow,
-  rtems_termios_device_context       *context
-)
-{
-  rtems_interrupt_lock_context lock_context;
-  rtems_device_minor_number    minor;
-
-  rtems_interrupt_lock_acquire( &console_lock, &lock_context );
-  minor = console_minor;
-  ++console_minor;
-  rtems_interrupt_lock_release( &console_lock, &lock_context );
-
-  return rtems_termios_device_install(
-    device_file,
-    console_major,
-    minor,
-    handler,
-    flow,
-    context
-  );
-}
+#include <unistd.h>
 
 bool console_device_probe_default(rtems_termios_device_context *context)
 {
@@ -72,8 +43,6 @@ rtems_device_driver console_initialize(
     if ( ( *ctx->probe )( ctx->context ) ) {
       sc = rtems_termios_device_install(
         ctx->device_file,
-        major,
-        minor,
         ctx->handler,
         ctx->flow,
         ctx->context
@@ -85,16 +54,12 @@ rtems_device_driver console_initialize(
       if ( !console_device_done ) {
         console_device_done = true;
 
-        sc = rtems_io_register_name( CONSOLE_DEVICE_NAME, major, minor );
-        if ( sc != RTEMS_SUCCESSFUL ) {
+        if ( link( ctx->device_file, CONSOLE_DEVICE_NAME ) != 0 ) {
           bsp_fatal( BSP_FATAL_CONSOLE_INSTALL_1 );
         }
       }
     }
   }
 
-  console_major = major;
-  console_minor = minor;
-
   return RTEMS_SUCCESSFUL;
 }