From 5c952cf0245421feb4644f2e71487c0b2e1dbd13 Mon Sep 17 00:00:00 2001 From: wdenk Date: Sun, 10 Oct 2004 21:27:30 +0000 Subject: Patches by Scott McNutt, 24 Aug 2004: - Add support for Altera Nios-II processors. - Add support for Psyent PCI-5441 board. - Add support for Psyent PK1C20 board. --- lib_nios2/time.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 lib_nios2/time.c (limited to 'lib_nios2/time.c') diff --git a/lib_nios2/time.c b/lib_nios2/time.c new file mode 100644 index 0000000..25a233e --- /dev/null +++ b/lib_nios2/time.c @@ -0,0 +1,39 @@ +/* + * (C) Copyright 2003, Psyent Corporation + * Scott McNutt + * + * See file CREDITS for list of people who contributed to this + * project. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + * 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. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, + * MA 02111-1307 USA + */ + +#include +#include + + +extern void dly_clks( unsigned long ticks ); + +void udelay(unsigned long usec) +{ + /* The Nios core doesn't have a timebase, so we do our + * best for now and call a low-level loop that counts + * cpu clocks. + */ + unsigned long cnt = (CONFIG_SYS_CLK_FREQ/1000000) * usec; + WATCHDOG_RESET (); /* trigger watchdog if needed */ + dly_clks (cnt); +} -- cgit v1.1