From b850e7fb76d224f576de6aff2dfa65d5912e9f3f Mon Sep 17 00:00:00 2001 From: Sebastian Huber Date: Fri, 8 Dec 2017 13:23:41 +0100 Subject: bsp/gensh1: Move libcpu files to BSP Update #3254. --- c/src/lib/libcpu/sh/sh7032/delay/delay.c | 51 -------------------------------- 1 file changed, 51 deletions(-) delete mode 100644 c/src/lib/libcpu/sh/sh7032/delay/delay.c (limited to 'c/src/lib/libcpu/sh/sh7032/delay') diff --git a/c/src/lib/libcpu/sh/sh7032/delay/delay.c b/c/src/lib/libcpu/sh/sh7032/delay/delay.c deleted file mode 100644 index 085771f777..0000000000 --- a/c/src/lib/libcpu/sh/sh7032/delay/delay.c +++ /dev/null @@ -1,51 +0,0 @@ -/* - * This routine is a simple spin delay - * - * Author: Ralf Corsepius (corsepiu@faw.uni-ulm.de) - * - * COPYRIGHT (c) 1999, Ralf Corsepius, 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) 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 - -extern uint32_t bsp_clicks_per_second; - -/* - * Simple spin delay in microsecond units for device drivers. - * This is very dependent on the clock speed of the target. - * - * Since we don't have a real time clock, this is a very rough - * approximation, assuming that each cycle of the delay loop takes - * approx. 4 machine cycles. - * - * e.g.: clicks_per_second = 20MHz - * => 5e-8 secs per instruction - * => 4 * 5e-8 secs per delay loop - */ - -void CPU_delay( uint32_t microseconds ) -{ - register uint32_t clicks_per_usec = bsp_clicks_per_second / 1000000; - register uint32_t _delay = (microseconds) * (clicks_per_usec); - - __asm__ volatile ( -"0: add #-4,%0\n\ - nop\n\ - cmp/pl %0\n\ - bt 0b\n\ - nop" - :: "r" (_delay) ); -} -- cgit v1.2.3