[rtems commit] config: Initialize IO drivers on demand
Sebastian Huber
sebh at rtems.org
Wed Feb 26 12:03:26 UTC 2020
Module: rtems
Branch: master
Commit: c36fae22fe0a0f0e66793a7f894817cff1ebf33b
Changeset: http://git.rtems.org/rtems/commit/?id=c36fae22fe0a0f0e66793a7f894817cff1ebf33b
Author: Sebastian Huber <sebastian.huber at embedded-brains.de>
Date: Tue Feb 25 13:47:59 2020 +0100
config: Initialize IO drivers on demand
---
cpukit/Makefile.am | 1 +
cpukit/include/rtems/confdefs/iodrivers.h | 29 ++++++++++++++++++++
cpukit/sapi/src/exinit.c | 13 ---------
cpukit/sapi/src/iodefault.c | 45 +++++++++++++++++++++++++++++++
testsuites/sptests/spsysinit01/init.c | 2 ++
5 files changed, 77 insertions(+), 13 deletions(-)
diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am
index 85b4278..155052e 100644
--- a/cpukit/Makefile.am
+++ b/cpukit/Makefile.am
@@ -1054,6 +1054,7 @@ librtemscpu_a_SOURCES += sapi/src/getconfigmax.c
librtemscpu_a_SOURCES += sapi/src/getversionstring.c
librtemscpu_a_SOURCES += sapi/src/interrtext.c
librtemscpu_a_SOURCES += sapi/src/io.c
+librtemscpu_a_SOURCES += sapi/src/iodefault.c
librtemscpu_a_SOURCES += sapi/src/ioclose.c
librtemscpu_a_SOURCES += sapi/src/iocontrol.c
librtemscpu_a_SOURCES += sapi/src/ioinitialize.c
diff --git a/cpukit/include/rtems/confdefs/iodrivers.h b/cpukit/include/rtems/confdefs/iodrivers.h
index 1e7b8c4..7ebe2ed 100644
--- a/cpukit/include/rtems/confdefs/iodrivers.h
+++ b/cpukit/include/rtems/confdefs/iodrivers.h
@@ -42,7 +42,19 @@
#ifdef CONFIGURE_INIT
+#if defined(CONFIGURE_APPLICATION_EXTRA_DRIVERS) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_ATA_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_FRAME_BUFFER_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_IDE_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_NULL_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_RTC_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_STUB_DRIVER) \
+ || defined(CONFIGURE_APPLICATION_NEEDS_ZERO_DRIVER) \
+ || CONFIGURE_MAXIMUM_DRIVERS > 0
+
#include <rtems/ioimpl.h>
+#include <rtems/sysinit.h>
#ifdef CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
#if defined(CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER) \
@@ -150,6 +162,12 @@ _IO_Driver_address_table[ CONFIGURE_MAXIMUM_DRIVERS ] = {
const size_t _IO_Number_of_drivers =
RTEMS_ARRAY_SIZE( _IO_Driver_address_table );
+RTEMS_SYSINIT_ITEM(
+ _IO_Initialize_all_drivers,
+ RTEMS_SYSINIT_DEVICE_DRIVERS,
+ RTEMS_SYSINIT_ORDER_MIDDLE
+);
+
#ifdef CONFIGURE_APPLICATION_NEEDS_ATA_DRIVER
#ifndef CONFIGURE_ATA_DRIVER_TASK_PRIORITY
#define CONFIGURE_ATA_DRIVER_TASK_PRIORITY ATA_DRIVER_TASK_DEFAULT_PRIORITY
@@ -163,6 +181,17 @@ const size_t _IO_Number_of_drivers =
}
#endif
+#endif /* CONFIGURE_APPLICATION_EXTRA_DRIVERS
+ || CONFIGURE_APPLICATION_NEEDS_ATA_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_FRAME_BUFFER_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_IDE_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_NULL_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_RTC_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_STUB_DRIVER
+ || CONFIGURE_APPLICATION_NEEDS_ZERO_DRIVER
+ || CONFIGURE_MAXIMUM_DRIVERS */
+
#endif /* CONFIGURE_INIT */
#endif /* _RTEMS_CONFDEFS_IODRIVERS_H */
diff --git a/cpukit/sapi/src/exinit.c b/cpukit/sapi/src/exinit.c
index 196c9be..e29b364 100644
--- a/cpukit/sapi/src/exinit.c
+++ b/cpukit/sapi/src/exinit.c
@@ -22,7 +22,6 @@
#include <rtems/config.h>
#include <rtems/extensionimpl.h>
#include <rtems/init.h>
-#include <rtems/ioimpl.h>
#include <rtems/sysinit.h>
#include <rtems/score/sysstate.h>
@@ -120,18 +119,6 @@ RTEMS_SYSINIT_ITEM(
RTEMS_SYSINIT_ORDER_MIDDLE
);
-/* Initialize I/O drivers.
- *
- * Driver Manager note:
- * All drivers may not be registered yet. Drivers will dynamically
- * be initialized when registered in level 2,3 and 4.
- */
-RTEMS_SYSINIT_ITEM(
- _IO_Initialize_all_drivers,
- RTEMS_SYSINIT_DEVICE_DRIVERS,
- RTEMS_SYSINIT_ORDER_MIDDLE
-);
-
void rtems_initialize_executive(void)
{
const rtems_sysinit_item *item;
diff --git a/cpukit/sapi/src/iodefault.c b/cpukit/sapi/src/iodefault.c
new file mode 100644
index 0000000..114a419
--- /dev/null
+++ b/cpukit/sapi/src/iodefault.c
@@ -0,0 +1,45 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ * @file
+ *
+ * @ingroup ClassicIO
+ *
+ * @brief This file contains definitions of IO drivers data structures for the
+ * default application configuration.
+ */
+
+/*
+ * Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#if HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <rtems/ioimpl.h>
+
+rtems_driver_address_table _IO_Driver_address_table[ 0 ];
+
+const size_t _IO_Number_of_drivers = 0;
diff --git a/testsuites/sptests/spsysinit01/init.c b/testsuites/sptests/spsysinit01/init.c
index 407ff26..4cea5f1 100644
--- a/testsuites/sptests/spsysinit01/init.c
+++ b/testsuites/sptests/spsysinit01/init.c
@@ -1045,6 +1045,8 @@ static void *POSIX_Init(void *arg)
#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+#define CONFIGURE_APPLICATION_EXTRA_DRIVERS NULL_DRIVER_TABLE_ENTRY
+
#define CONFIGURE_INIT
#include <rtems/confdefs.h>
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