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authorAun-Ali Zaidi <admin@kodeit.net>2015-12-11 17:21:26 -0600
committerGedare Bloom <gedare@rtems.org>2015-12-12 20:21:33 -0500
commitc8a8a6013fc3c02ae58eb343afec00a5954952e5 (patch)
tree156c7449192e55930f6cfe3017292ed4319c2e3d /c/src/lib/libbsp/arm/gba/timer/timer.c
parentarm/nds: Remove (diff)
downloadrtems-c8a8a6013fc3c02ae58eb343afec00a5954952e5.tar.bz2
arm/gba: Remove
updates #2449.
Diffstat (limited to '')
-rw-r--r--c/src/lib/libbsp/arm/gba/timer/timer.c134
1 files changed, 0 insertions, 134 deletions
diff --git a/c/src/lib/libbsp/arm/gba/timer/timer.c b/c/src/lib/libbsp/arm/gba/timer/timer.c
deleted file mode 100644
index 9aad10312b..0000000000
--- a/c/src/lib/libbsp/arm/gba/timer/timer.c
+++ /dev/null
@@ -1,134 +0,0 @@
-/**
- * @file timer.c
- *
- * GBA Timer driver.
- */
-/*
- * RTEMS GBA BSP
- *
- * Copyright (c) 2002 by Jay Monkman <jtm@smoothsmoothie.com>
- *
- * Copyright (c) 2004 Markku Puro <markku.puro@kopteri.net>
- *
- * 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.
- *
- *
- * Notes:
- * 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.
- *
- * It is important that the timer start/stop overhead be determined
- * when porting or modifying this code.
- */
-
-#include <rtems.h>
-#include <bsp.h>
-#include <rtems/btimer.h>
-#include <bsp/irq.h>
-#include <gba.h>
-
-/*
- * Set up the timer hardware
- * 1 / 16.78Mhz => 59.595 ns
- * 64 / 16.78Mhz => 3.814 us
- * 256 / 16.78Mhz => 15.256 us
- * 1024 / 16.78Mhz => 61.025 us
- */
-#define __TimePreScaler 1
-#define __TickTime_ns ((1000000000L/__ClockFrequency)*__TimePreScaler)
-#define __TickTime_us ((1000000L/__ClockFrequency)*__TimePreScaler)
-
-#if (__TimePreScaler==1)
- #define GBA_TM0CNT_PS 0x0000
-#elif (__TimePreScaler==64)
- #define GBA_TM0CNT_PS 0x0001
-#elif (__TimePreScaler==256)
- #define GBA_TM0CNT_PS 0x0002
-#elif (__TimePreScaler==1024)
- #define GBA_TM0CNT_PS 0x0003
-#else
- #define GBA_TM0CNT_PS 0x0003
-#endif
-
-bool benchmark_timer_find_average_overhead;
-
-/**
- * @brief benchmark_timer_initialize start TM0 and TM1
- *
- * @param None
- * @return None
- */
-void benchmark_timer_initialize( void )
-{
- GBA_REG_TM1CNT = 0x0000; /* Stop Counters */
- GBA_REG_TM0CNT = 0x0000;
- GBA_REG_TM1D = 0x0000; /* Reset Counters */
- GBA_REG_TM0D = 0x0000;
- /* Start Counters */
- GBA_REG_TM1CNT = 0x0084; /* Start Count Up timing */
- GBA_REG_TM0CNT = (0x0080|GBA_TM0CNT_PS); /* Start Count */
-}
-
-/*
- * 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 3 /**< It typically takes 3 microseconds */
-#define LEAST_VALID 1 /**< Don't trust a clicks value lower than this */
-
-/**
- * @brief benchmark_timer_read return timer countervalue in microseconds.
- *
- * Used in Timing Test Suite.
- *
- * @param None
- * @return Timer value in microseconds
- */
-benchmark_timer_t benchmark_timer_read( void )
-{
- uint32_t ticks;
- uint32_t total;
-
- /* Stop Counters */
- GBA_REG_TM0CNT = 0x0000;
- GBA_REG_TM1CNT = 0x0000;
- /* Read Counters */
- ticks = (GBA_REG_TM1D<<16) | GBA_REG_TM0D;
- if ( ticks < LEAST_VALID ) {
- return 0; /* below timer resolution */
- }
- /* convert to uS */
- total = ((ticks * __TickTime_ns) / 1000);
- if ( benchmark_timer_find_average_overhead == true ) {
- return total; /* in microseconds */
- }
- else {
- if ( total < AVG_OVERHEAD ) {
- return 0;
- }
- return (total - AVG_OVERHEAD);
- }
-}
-
-/**
- * @brief Set benchmark_timer_find_average_overhead flag.
- *
- * Used in Timing Test Suite.
- *
- * @param find_flag bool find_flag
- * @return None
-*/
-void benchmark_timer_disable_subtracting_average_overhead(bool find_flag)
-{
- benchmark_timer_find_average_overhead = find_flag;
-}