bsps: Move benchmark timer to bsps

This patch is a part of the BSP source reorganization.

Update #3285.

2 files changed, 113 insertions, 0 deletions

diff --git a/bsps/arm/rtl22xx/btimer/btimer.c b/bsps/arm/rtl22xx/btimer/btimer.c
new file mode 100644
index 0000000000..ad73aeda3c
--- /dev/null
+++ b/bsps/arm/rtl22xx/btimer/btimer.c
@@ -0,0 +1,65 @@
+/**
+ * @file
+ * @brief RTL22xx board Timer driver
+ *
+ * This uses Timer1 for timing measurments.
+ */
+
+/*
+ * By Ray Xu <rayx.cn@gmail.com>, modify form Mc9328mxl RTEMS DSP
+ *
+ * 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 <bsp.h>
+#include <rtems.h>
+#include <rtems/btimer.h>
+#include <lpc22xx.h>
+#include "lpc_timer.h"
+
+uint32_t g_start;
+uint32_t g_freq;
+
+bool benchmark_timer_find_average_overhead;
+
+
+/*
+ * Set up Timer 1
+ */
+void benchmark_timer_initialize( void )
+{
+       g_freq = LPC22xx_Fpclk / 1000;
+}
+
+/*
+ *  The following controls the behavior of benchmark_timer_read().
+ *
+ *  AVG_OVEREHAD is the overhead for starting and stopping the timer.  It
+ *  is usually deducted from the number returned.
+ *
+ *  LEAST_VALID is the lowest number this routine should trust.  Numbers
+ *  below this are "noise" and zero is returned.
+ */
+
+#define AVG_OVERHEAD      0  /* It typically takes X.X microseconds */
+                             /* (Y countdowns) to start/stop the timer. */
+                             /* This value is in microseconds. */
+#define LEAST_VALID       1  /* Don't trust a clicks value lower than this */
+
+benchmark_timer_t benchmark_timer_read( void )
+{
+  return (T0TC/(LPC22xx_Fpclk/1000000));
+  /*
+   *  Total is calculated by taking into account the number of timer overflow
+   *  interrupts since the timer was initialized and clicks since the last
+   *  interrupts.
+   */
+}
+
+void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
+{
+  benchmark_timer_find_average_overhead = find_flag;
+}
+
diff --git a/bsps/arm/rtl22xx/btimer/lpc_timer.h b/bsps/arm/rtl22xx/btimer/lpc_timer.h
new file mode 100644
index 0000000000..364812ddb8
--- /dev/null
+++ b/bsps/arm/rtl22xx/btimer/lpc_timer.h
@@ -0,0 +1,48 @@
+#ifndef __LPC_TIMER_H
+#define __LPC_TIMER_H
+
+/*************************************************************************
+ *
+ *    File name   : Timer.h
+ *
+ **************************************************************************/
+
+/* Timer Control register bit descriptions */
+#define TCR_ENABLE_BIT  0
+#define TCR_RESET_BIT   1
+
+// The channel name which is used in matching, in fact they represent
+// corresponding Match Register
+#define CH_MAXNUM       4
+#define CH0             0
+#define CH1             1
+#define CH2             2
+#define CH3             3
+
+// The channel name which is used in capturing, in fact they represent
+// corresponding Capture Register
+#define CPCH_MAXNUM     4
+#define CPCH0           0
+#define CPCH1           1
+#define CPCH2           2
+#define CPCH3           3
+
+//The actions when matching
+#define TimerAction_Interrupt   0x1
+#define TimerAction_ResetTimer  0x2
+#define TimerAction_StopTimer   0x4
+
+//Interrupt source type
+#define TIMERMR0Int     0x01
+#define TIMERMR1Int     0x02
+#define TIMERMR2Int     0x04
+#define TIMERMR3Int     0x08
+#define TIMERCR0Int     0x10
+#define TIMERCR1Int     0x20
+#define TIMERCR2Int     0x40
+#define TIMERCR3Int     0x80
+
+#define TIMERALLInt     0xFF
+
+#endif //__LPC_Timer_H
+