8 files changed, 83 insertions, 0 deletions
diff --git a/cpukit/include/sys/_ffcounter.h b/cpukit/include/sys/_ffcounter.h
index d83c48cd44..c9cb9f6cda 100644
--- a/cpukit/include/sys/_ffcounter.h
+++ b/cpukit/include/sys/_ffcounter.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplSysTimer
+ *
+ * @brief This header file provides interfaces of the
+ *   feed-forward clock counter.
+ */
+
 /*-
  * Copyright (c) 2011 The University of Melbourne
  * All rights reserved.
diff --git a/cpukit/include/sys/endian.h b/cpukit/include/sys/endian.h
index 0849a6a90b..d0037f2984 100644
--- a/cpukit/include/sys/endian.h
+++ b/cpukit/include/sys/endian.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplSysEndian
+ *
+ * @brief This header file provides interfaces of the
+ *   system endianness.
+ */
+
 /*-
  * Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
  * All rights reserved.
@@ -26,6 +35,12 @@
  * $FreeBSD: head/sys/sys/endian.h 208331 2010-05-20 06:16:13Z phk $
  */
 
+/**
+ * @defgroup RTEMSImplSysEndian System Endianness Support
+ *
+ * @ingroup RTEMSImpl
+ */
+
 #ifndef _SYS_ENDIAN_H_
 #define _SYS_ENDIAN_H_
 
diff --git a/cpukit/include/sys/priority.h b/cpukit/include/sys/priority.h
index 855edb63c2..1ca2e35d7b 100644
--- a/cpukit/include/sys/priority.h
+++ b/cpukit/include/sys/priority.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplKernel
+ *
+ * @brief This header file provides interfaces of the
+ *   Process priority specifications.
+ */
+
 /*-
  * SPDX-License-Identifier: BSD-4-Clause
  *
diff --git a/cpukit/include/sys/statvfs.h b/cpukit/include/sys/statvfs.h
index 52d8e9d3fa..062d66ce02 100644
--- a/cpukit/include/sys/statvfs.h
+++ b/cpukit/include/sys/statvfs.h
@@ -3,6 +3,8 @@
 /**
  * @file
  *
+ * @ingroup RTEMSAPIStatvfs
+ *
  * @brief Interface to the statvfs() Set of API Methods
  *
  * This include file defines the interface to the statvfs() set of
@@ -39,6 +41,12 @@
 /*
  */
 
+/**
+ * @defgroup RTEMSAPIStatvfs statvfs API Methods
+ *
+ * @ingroup RTEMSAPI
+ */
+
 #ifndef _SYS_STATVFS_H_
 #define _SYS_STATVFS_H_
 
diff --git a/cpukit/include/sys/timeffc.h b/cpukit/include/sys/timeffc.h
index c04de97f1d..ac66791012 100644
--- a/cpukit/include/sys/timeffc.h
+++ b/cpukit/include/sys/timeffc.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplSysTimer
+ *
+ * @brief This header file provides interfaces of the
+ *   feed-forward clock counter.
+ */
+
 /*-
  * Copyright (c) 2011 The University of Melbourne
  * All rights reserved.
diff --git a/cpukit/include/sys/timepps.h b/cpukit/include/sys/timepps.h
index 030c734477..96b695d907 100644
--- a/cpukit/include/sys/timepps.h
+++ b/cpukit/include/sys/timepps.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplSysTimer
+ *
+ * @brief This header file provides interfaces of the
+ *   Pulse Per Second timing.
+ */
+
 /*-
  * ----------------------------------------------------------------------------
  * "THE BEER-WARE LICENSE" (Revision 42):
diff --git a/cpukit/include/sys/timetc.h b/cpukit/include/sys/timetc.h
index 1ef58b378d..551fc998e5 100644
--- a/cpukit/include/sys/timetc.h
+++ b/cpukit/include/sys/timetc.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplSysTimer
+ *
+ * @brief This header file provides interfaces of the
+ *   binary timecounter.
+ */
+
 /*-
  * ----------------------------------------------------------------------------
  * "THE BEER-WARE LICENSE" (Revision 42):
diff --git a/cpukit/include/sys/timex.h b/cpukit/include/sys/timex.h
index 8e763bb30f..049b29c998 100644
--- a/cpukit/include/sys/timex.h
+++ b/cpukit/include/sys/timex.h
@@ -1,3 +1,12 @@
+/**
+ * @file
+ *
+ * @ingroup RTEMSImplSysTimer
+ *
+ * @brief This header file provides interfaces of the
+ *   Network Time Protocol (NTP)
+ */
+
 /*-
  ***********************************************************************
  *								       *
@@ -32,6 +41,12 @@
  *
  */
 
+/**
+ * @defgroup RTEMSImplSysTimer System Timer Support
+ *
+ * @ingroup RTEMSImpl
+ */
+
 #ifndef _SYS_TIMEX_H_
 #define _SYS_TIMEX_H_ 1