Jay Monkman <jmonkman@frasca.com> submitted the eth_comm BSP for a PPC860

based board.

2 files changed, 164 insertions, 0 deletions

diff --git a/c/src/lib/libcpu/powerpc/mpc860/timer/Makefile.in b/c/src/lib/libcpu/powerpc/mpc860/timer/Makefile.in
new file mode 100644
index 0000000000..2c423f2a5a
--- /dev/null
+++ b/c/src/lib/libcpu/powerpc/mpc860/timer/Makefile.in
@@ -0,0 +1,60 @@
+#
+#  $Id$
+#
+
+@SET_MAKE@
+srcdir = @srcdir@
+VPATH = @srcdir@
+RTEMS_ROOT = @top_srcdir@
+PROJECT_ROOT = @PROJECT_ROOT@
+
+PGM=${ARCH}/timer.rel
+
+# C source names, if any, go here -- minus the .c
+C_PIECES=timer
+C_FILES=$(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
+
+#
+# (OPTIONAL) Add local stuff here using +=
+#
+
+DEFINES  +=
+CPPFLAGS +=
+CFLAGS   += $(CFLAGS_OS_V)
+
+LD_PATHS  +=
+LD_LIBS   +=
+LDFLAGS   +=
+
+#
+# Add your list of files to delete here.  The config files
+#  already know how to delete some stuff, so you may want
+#  to just run 'make clean' first to see what gets missed.
+#  'make clobber' already includes 'make clean'
+#
+
+CLEAN_ADDITIONS +=
+CLOBBER_ADDITIONS +=
+
+${PGM}: ${SRCS} ${OBJS}
+	$(make-rel)
+
+all:	${ARCH} $(SRCS) $(PGM)
+
+# the .rel file built here will be put into libbsp.a by
+#    libbsp/hppa/BSP/wrapup/Makefile
+install:  all
diff --git a/c/src/lib/libcpu/powerpc/mpc860/timer/timer.c b/c/src/lib/libcpu/powerpc/mpc860/timer/timer.c
new file mode 100644
index 0000000000..c97439f2d6
--- /dev/null
+++ b/c/src/lib/libcpu/powerpc/mpc860/timer/timer.c
@@ -0,0 +1,104 @@
+/*  timer.c
+ *
+ *  This file manages the interval timer on the PowerPC MPC860.
+ *  NOTE: This is not the PIT, but rather the RTEMS interval
+ *        timer
+ *  We shall use the bottom 32 bits of the timebase register,
+ *
+ *  The following was in the 403 version of this file. I don't
+ *  know what it means. JTM 5/19/98
+ *  NOTE: It is important that the timer start/stop overhead be
+ *        determined when porting or modifying this code.
+ *
+ *  Author: Jay Monkman (jmonkman@frasca.com)
+ *  Copywright (C) 1998 by Frasca International, Inc.
+ *
+ *  Derived from c/src/lib/libcpu/ppc/ppc403/timer/timer.c:
+ *
+ *  Author:     Andrew Bray <andy@i-cubed.co.uk>
+ *
+ *  COPYRIGHT (c) 1995 by i-cubed ltd.
+ *
+ *  To anyone who acknowledges that this file is provided "AS IS"
+ *  without any express or implied warranty:
+ *      permission to use, copy, modify, and distribute this file
+ *      for any purpose is hereby granted without fee, provided that
+ *      the above copyright notice and this notice appears in all
+ *      copies, and that the name of i-cubed limited not be used in
+ *      advertising or publicity pertaining to distribution of the
+ *      software without specific, written prior permission.
+ *      i-cubed limited makes no representations about the suitability
+ *      of this software for any purpose.
+ *
+ *  Derived from c/src/lib/libcpu/hppa1_1/timer/timer.c:
+ *
+ *  COPYRIGHT (c) 1989-1998.
+ *  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.h>
+#include <mpc860.h>
+
+extern rtems_cpu_table           Cpu_table;             /* owned by BSP */
+
+static volatile rtems_unsigned32 Timer_starting;
+static rtems_boolean Timer_driver_Find_average_overhead;
+
+/*
+ *  This is so small that this code will be reproduced where needed.
+ */
+static inline rtems_unsigned32 get_itimer(void)
+{
+   rtems_unsigned32 ret;
+
+   asm volatile ("mftb %0" : "=r" ((ret))); /* TBLO */
+
+   return ret;
+}
+
+void Timer_initialize(void)
+{
+  /* set interrupt level and enable timebase. This should never */
+  /*  generate an interrupt however. */
+  m860.tbscr |= M860_TBSCR_TBIRQ(4) | M860_TBSCR_TBE;
+  
+  Timer_starting = get_itimer();
+}
+
+int Read_timer(void)
+{
+  rtems_unsigned32 clicks;
+  rtems_unsigned32 total;
+
+  clicks = get_itimer();
+
+  total = clicks - Timer_starting;
+
+  if ( Timer_driver_Find_average_overhead == 1 )
+    return total;          /* in XXX microsecond units */
+
+  else {
+    if ( total < Cpu_table.timer_least_valid ) {
+      return 0;            /* below timer resolution */
+    }
+    return (total - Cpu_table.timer_average_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;
+}