bsps: Move benchmark timer to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

1 files changed, 101 insertions, 0 deletions

diff --git a/bsps/powerpc/tqm8xx/btimer/btimer.c b/bsps/powerpc/tqm8xx/btimer/btimer.c
new file mode 100644
index 0000000000..06c43c56be
--- /dev/null
+++ b/bsps/powerpc/tqm8xx/btimer/btimer.c
@@ -0,0 +1,101 @@
+/*===============================================================*\
+| Project: RTEMS TQM8xx BSP                                       |
++-----------------------------------------------------------------+
+| This file has been adapted to MPC8xx by                         |
+|    Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>         |
+|                    Copyright (c) 2008                           |
+|                    Embedded Brains GmbH                         |
+|                    Obere Lagerstr. 30                           |
+|                    D-82178 Puchheim                             |
+|                    Germany                                      |
+|                    rtems@embedded-brains.de                     |
+|                                                                 |
+| See the other copyright notice below for the original parts.    |
++-----------------------------------------------------------------+
+| The license and distribution terms for this file may be         |
+| found in the file LICENSE in this distribution or at            |
+|                                                                 |
+| http://www.rtems.org/license/LICENSE.                           |
+|                                                                 |
++-----------------------------------------------------------------+
+| this file contains the console driver                           |
+\*===============================================================*/
+/*
+ * benchmark_timer_initialize()
+ *
+ * Use TIMER 1 and TIMER 2 for Timing Test Suite
+ *
+ * this is derived from "timer.c" available in the m68k/gen68360 BSP
+ * adapted by Thomas Doerfler <Thomas.Doerfler@embedded-brains.de>
+ */
+
+/*
+ *
+ *  Input parameters:  NONE
+ *
+ *  Output parameters:  NONE
+ *
+ *  NOTE: It is important that the timer start/stop overhead be
+ *        determined when porting or modifying this code.
+ *
+ *  COPYRIGHT (c) 1989-1999.
+ *  On-Line Applications Research Corporation (OAR).
+ *
+ *  The license and distribution terms for this file may be
+ *  found in the file LICENSE in this distribution or at
+ *  http://www.rtems.org/license/LICENSE.
+ */
+
+#include <rtems.h>
+#include <bsp.h>
+#include <rtems/btimer.h>
+#include <mpc8xx.h>
+
+bool benchmark_timer_find_average_overhead;
+
+void
+benchmark_timer_initialize (void)
+{
+	/*
+	 * Reset timers 1 and 2
+	 */
+	m8xx.tgcr &= ~0x00FF;
+	m8xx.tcn1 = 0;
+	m8xx.tcn2 = 0;
+	m8xx.ter1 = 0xFFFF;
+	m8xx.ter2 = 0xFFFF;
+
+	/*
+	 * Cascade timers 1 and 2
+	 */
+	m8xx.tgcr |= M8xx_TGCR_CAS2;
+
+	/*
+	 * Configure timers 1 and 2 to a single 32-bit, BUS_clock timer.
+	 */
+	m8xx.tmr2 = (0 << 8) | 0x2;
+	m8xx.tmr1 = 0;
+
+	/*
+	 * Start the timers
+	 */
+	m8xx.tgcr |=  0x0011;
+}
+
+/*
+ * Return timer value in microsecond units
+ */
+benchmark_timer_t benchmark_timer_read(void)
+{
+  uint32_t retval;
+  retval = *(uint32_t*)&m8xx.tcn1;
+  retval = retval * 1000000LL / BSP_bus_frequency;
+  return retval;
+}
+
+void benchmark_timer_disable_subtracting_average_overhead(
+  bool find_flag
+)
+{
+  benchmark_timer_find_average_overhead = find_flag;
+}