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-rw-r--r--c/src/lib/libcpu/bfin/timer/timer.c96
1 files changed, 0 insertions, 96 deletions
diff --git a/c/src/lib/libcpu/bfin/timer/timer.c b/c/src/lib/libcpu/bfin/timer/timer.c
deleted file mode 100644
index 02540fe2ce..0000000000
--- a/c/src/lib/libcpu/bfin/timer/timer.c
+++ /dev/null
@@ -1,96 +0,0 @@
-/**
- * @file
- * @brief Timer for Blackfin
- *
- * This file manages the benchmark timer used by the RTEMS Timing Test
- * Suite. Each measured time period is demarcated by calls to
- * benchmark_timer_initialize() and benchmark_timer_read().
- * benchmark_timer_read() usually returns the number of microseconds
- * since benchmark_timer_initialize() exitted.
- */
-
-/*
- * Copyright (c) 2006 by Atos Automacao Industrial Ltda.
- * written by Alain Schaefer <alain.schaefer@easc.ch>
- * and Antonio Giovanini <antonio@atos.com.br>
- *
- * 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>
-
-uint32_t Timer_interrupts;
-bool benchmark_timer_find_average_overhead;
-
-/*
- * benchmark_timer_initialize
- *
- * Blackfin processor has a counter for clock cycles.
- */
-void benchmark_timer_initialize( void )
-{
-
- /*reset counters*/
- __asm__ ("R2 = 0;");
- __asm__ ("CYCLES = R2;");
- __asm__ ("CYCLES2 = R2;");
- /*start counters*/
- __asm__ ("R2 = SYSCFG;");
- __asm__ ("BITSET(R2,1);");
- __asm__ ("SYSCFG = R2");
-
-}
-
-/*
- * 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 )
-{
- uint32_t clicks;
- uint32_t total;
- register uint32_t cycles __asm__ ("R2");
-
- /* stop counter */
- __asm__ ("R2 = SYSCFG;");
- __asm__ ("BITCLR(R2,1);");
- __asm__ ("SYSCFG = R2;");
- __asm__ ("R2 = CYCLES;");
-
-
- clicks = cycles; /* Clock cycles */
-
- /* converting to microseconds */
- total = clicks / (CCLK/1000000);
-
- if ( benchmark_timer_find_average_overhead == 1 )
- return total; /* in XXX microsecond units */
- else {
- if ( total < LEAST_VALID )
- return 0; /* below timer resolution */
- /*
- * Somehow convert total into microseconds
- */
- return (total - AVG_OVERHEAD);
- }
-}
-
-void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
-{
- benchmark_timer_find_average_overhead = find_flag;
-}