From 533e2c0af6dad96de5c8123206adebea2fbb06d2 Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 8 Dec 2017 13:31:12 +0100 Subject: bsp/gensh2: Move libcpu files to BSP Update #3254. --- c/src/lib/libcpu/sh/sh7045/timer/timer.c | 191 ------------------------------- 1 file changed, 191 deletions(-) delete mode 100644 c/src/lib/libcpu/sh/sh7045/timer/timer.c (limited to 'c/src/lib/libcpu/sh/sh7045/timer/timer.c') diff --git a/c/src/lib/libcpu/sh/sh7045/timer/timer.c b/c/src/lib/libcpu/sh/sh7045/timer/timer.c deleted file mode 100644 index 152c99b1aa..0000000000 --- a/c/src/lib/libcpu/sh/sh7045/timer/timer.c +++ /dev/null @@ -1,191 +0,0 @@ -/** - * @file - * @brief Timer for the Hitachi SH 704X - */ - -/* - * Authors: Ralf Corsepius (corsepiu@faw.uni-ulm.de) and - * Bernd Becker (becker@faw.uni-ulm.de) - * - * COPYRIGHT (c) 1997-1998, FAW Ulm, Germany - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. - * - * COPYRIGHT (c) 1998. - * 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 -#include - -#include -#include - -extern uint32_t bsp_clicks_per_second; - -/* - * We use a Phi/4 timer - */ -#define SCALE (Timer_MHZ/4) - -#define MTU1_STARTMASK 0xfd -#define MTU1_SYNCMASK 0xfd -#define MTU1_MODEMASK 0xc0 -#define MTU1_TCRMASK 0x01 -#define MTU1_TIORMASK 0x88 -#define MTU1_STAT_MASK 0xf8 -#define MTU1_TIERMASK 0xfc -#define IPRC_MTU1_MASK 0xfff0 - -#ifndef MTU1_PRIO -#define MTU1_PRIO 15 -#endif - -#define MTU1_VECTOR 86 - -extern rtems_isr timerisr(void); - -static uint32_t Timer_interrupts; - -bool benchmark_timer_find_average_overhead; - -static uint32_t Timer_MHZ ; - -void benchmark_timer_initialize( void ) -{ - uint8_t temp8; - uint16_t temp16; - rtems_interrupt_level level; - rtems_isr *ignored; - - Timer_MHZ = bsp_clicks_per_second / 1000000 ; - - /* - * Timer has never overflowed. This may not be necessary on some - * implemenations of timer but .... - */ - - Timer_interrupts /* .i */ = 0; - rtems_interrupt_disable( level ); - - /* - * Somehow start the timer - */ - /* stop Timer 1 */ - temp8 = read8(MTU_TSTR) & MTU1_STARTMASK; - write8( temp8, MTU_TSTR ); - - /* initialize counter 1 */ - write16( 0, MTU_TCNT1); - - /* Timer 1 is independent of other timers */ - temp8 = read8(MTU_TSYR) & MTU1_SYNCMASK; - write8( temp8, MTU_TSYR ); - - /* Timer 1, normal mode */ - temp8 = read8(MTU_TMDR1) & MTU1_MODEMASK; - write8( temp8, MTU_TMDR1 ); - - /* x0000000 - * |||||+++--- Internal Clock - * |||++------ Count on rising edge - * |++-------- disable TCNT clear - * +---------- don`t care - */ - write8( MTU1_TCRMASK, MTU_TCR1 ); - - /* gra and grb are not used */ - write8( MTU1_TIORMASK, MTU_TIOR1 ); - - /* reset all status flags */ - temp8 = read8(MTU_TSR1) & MTU1_STAT_MASK; - write8( temp8, MTU_TSR1 ); - - /* enable overflow interrupt */ - write8( MTU1_TIERMASK, MTU_TIER1 ); - - /* set interrupt priority */ - temp16 = read16(INTC_IPRC) & IPRC_MTU1_MASK; - temp16 |= MTU1_PRIO; - write16( temp16, INTC_IPRC); - - /* initialize ISR */ - _CPU_ISR_install_raw_handler( MTU1_VECTOR, timerisr, &ignored ); - rtems_interrupt_enable( level ); - - /* start timer 1 */ - temp8 = read8(MTU_TSTR) | ~MTU1_STARTMASK; - write8( temp8, MTU_TSTR ); -} - -/* - * The following controls the behavior of benchmark_timer_read(). - * - * AVG_OVERHEAD 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 1 /* It typically takes X.X microseconds */ - /* (Y countdowns) to start/stop the timer. */ - /* This value is in microseconds. */ -#define LEAST_VALID 0 /* 20 */ /* Don't trust a clicks value lower than this */ - -benchmark_timer_t benchmark_timer_read( void ) -{ - uint32_t clicks; - uint32_t total ; - /* - * Read the timer and see how many clicks it has been since we started. - */ - - - clicks = read16( MTU_TCNT1 ); /* XXX: read some HW here */ - - /* - * Total is calculated by taking into account the number of timer overflow - * interrupts since the timer was initialized and clicks since the last - * interrupts. - */ - - total = clicks + Timer_interrupts * 65536; - - if ( benchmark_timer_find_average_overhead ) - return total / SCALE; /* in XXX microsecond units */ - else - { - if ( total < LEAST_VALID ) - return 0; /* below timer resolution */ - /* - * Somehow convert total into microseconds - */ - return (total / SCALE - AVG_OVERHEAD) ; - } -} - -void benchmark_timer_disable_subtracting_average_overhead(bool find_flag) -{ - benchmark_timer_find_average_overhead = find_flag; -} - -/* Timer 1 is used */ - -#pragma interrupt -void timerisr( void ) -{ - uint8_t temp8; - - /* reset the flags of the status register */ - temp8 = read8(MTU_TSR1) & MTU1_STAT_MASK; - write8( temp8, MTU_TSR1 ); - - Timer_interrupts += 1; -} -- cgit v1.2.3