From 5d807b57107bd7a0719c1818c87ef86b3861c799 Mon Sep 17 00:00:00 2001
From: Joel Sherrill <joel.sherrill@OARcorp.com>
Date: Tue, 21 Dec 1999 17:06:31 +0000
Subject: New files.

---
 c/src/lib/libcpu/powerpc/mpc6xx/timer/Makefile.in |  65 ++++++++++++++
 c/src/lib/libcpu/powerpc/mpc6xx/timer/timer.c     | 100 ++++++++++++++++++++++
 2 files changed, 165 insertions(+)
 create mode 100644 c/src/lib/libcpu/powerpc/mpc6xx/timer/Makefile.in
 create mode 100644 c/src/lib/libcpu/powerpc/mpc6xx/timer/timer.c

(limited to 'c/src/lib')

diff --git a/c/src/lib/libcpu/powerpc/mpc6xx/timer/Makefile.in b/c/src/lib/libcpu/powerpc/mpc6xx/timer/Makefile.in
new file mode 100644
index 0000000000..45342ebf39
--- /dev/null
+++ b/c/src/lib/libcpu/powerpc/mpc6xx/timer/Makefile.in
@@ -0,0 +1,65 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+top_srcdir = @top_srcdir@
+top_builddir = ../../..
+subdir = powerpc/mpc6xx/timer
+
+RTEMS_ROOT = @RTEMS_ROOT@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+VPATH = @srcdir@
+
+# C source names, if any, go here -- minus the .c
+C_PIECES = timer
+C_FILES = $(C_PIECES:%=%.c)
+C_O_FILES = $(C_PIECES:%=${ARCH}/%.o)
+
+H_FILES = 
+
+# Assembly source names, if any, go here -- minus the .S
+S_PIECES =
+S_FILES = $(S_PIECES:%=%.S)
+S_O_FILES = $(S_FILES:%.S=${ARCH}/%.o)
+
+SRCS = $(C_FILES) $(CC_FILES) $(H_FILES) $(S_FILES)
+OBJS = $(C_O_FILES) $(CC_O_FILES) $(S_O_FILES)
+
+include $(RTEMS_ROOT)/make/custom/@RTEMS_BSP@.cfg
+include $(RTEMS_ROOT)/make/leaf.cfg
+
+INSTALL_CHANGE = @INSTALL_CHANGE@
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES +=
+CPPFLAGS +=
+CFLAGS +=
+
+LD_PATHS +=
+LD_LIBS +=
+LDFLAGS +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+all: ${ARCH} $(SRCS) $(OBJS)
+
+# the .rel file built here will be put into libbsp.a by ../wrapup/Makefile
+install: all
+
+Makefile: $(srcdir)/Makefile.in $(top_builddir)/config.status
+	cd $(top_builddir) \
+	 && CONFIG_FILES=$(subdir)/$@ CONFIG_HEADERS= $(SHELL) ./config.status
diff --git a/c/src/lib/libcpu/powerpc/mpc6xx/timer/timer.c b/c/src/lib/libcpu/powerpc/mpc6xx/timer/timer.c
new file mode 100644
index 0000000000..307cfcac6b
--- /dev/null
+++ b/c/src/lib/libcpu/powerpc/mpc6xx/timer/timer.c
@@ -0,0 +1,100 @@
+/*  timer.c
+ *
+ *  This file implements a benchmark timer using the General Purpose Timer.
+ *
+ *  Notes:
+ *
+ *  BSP_TIMER_AVG_OVERHEAD and BSP_TIMER_LEAST_VALID are required to be
+ *  provided in bsp.h
+ *
+ *  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 in
+ *  the file LICENSE in this distribution or at
+ *  http://www.OARcorp.com/rtems/license.html.
+ *
+ *  $Id$
+ */
+
+#include <assert.h>
+#include <libcpu/cpu.h>
+#include <bsp.h>
+
+rtems_unsigned64 Timer_driver_Start_time;
+
+rtems_boolean Timer_driver_Find_average_overhead = 0;
+unsigned clicks_overhead = 0;
+
+/*
+ * Timer Get overhead
+ */
+
+int Timer_get_clicks_overhead()
+{
+  rtems_unsigned64  clicks;
+
+  PPC_Set_timebase_register((unsigned64) 0);
+  clicks = PPC_Get_timebase_register();
+  assert(clicks <= 0xffffffff);
+  clicks_overhead = (unsigned) clicks;
+  return clicks_overhead;
+}
+
+/*
+ * Timer_initialize 
+ */
+void Timer_initialize()
+{
+
+  /*
+   *  Timer runs long and accurate enough not to require an interrupt.
+   */
+
+  if (clicks_overhead == 0) clicks_overhead = Timer_get_clicks_overhead();
+  PPC_Set_timebase_register((unsigned64) 0);
+}
+
+
+/*
+ *  Read_timer
+ */
+int Read_timer()
+{
+  rtems_unsigned64  total64;
+  rtems_unsigned32  total;
+
+  /* approximately CLOCK_SPEED clicks per microsecond */
+
+  total64 = PPC_Get_timebase_register();
+
+  assert( total64 <= 0xffffffff );  /* fits into a unsigned32 */
+
+  total = (rtems_unsigned32) total64;
+
+  if ( Timer_driver_Find_average_overhead == 1 )
+    return total;          /* in "clicks" of the decrementer units */
+
+  return (int) BSP_Convert_decrementer(total - clicks_overhead);
+}
+
+unsigned long long Read_long_timer()
+{
+  rtems_unsigned64  total64;
+
+  total64 = PPC_Get_timebase_register();
+  return BSP_Convert_decrementer(total64 - clicks_overhead);
+}
+
+rtems_status_code Empty_function( void )
+{
+  return RTEMS_SUCCESSFUL;
+}
+
+void Set_find_average_overhead(
+  rtems_boolean find_flag
+)
+{
+  Timer_driver_Find_average_overhead = find_flag;
+}
-- 
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