diff options
| author | wdenk <wdenk> | 2003-10-14 19:43:55 +0000 | 
|---|---|---|
| committer | wdenk <wdenk> | 2003-10-14 19:43:55 +0000 | 
| commit | 2d5b561e2bfdee8552a99b2cf93016cce2a74895 (patch) | |
| tree | 33a47c8393624e338d0cc8914c773ab9613cb385 /cpu/ixp/timer.c | |
| parent | f72da3406bf6f1c1bce9aa03b07d070413a916af (diff) | |
| download | olio-uboot-2014.01-2d5b561e2bfdee8552a99b2cf93016cce2a74895.tar.xz olio-uboot-2014.01-2d5b561e2bfdee8552a99b2cf93016cce2a74895.zip | |
* Make sure HUSH is initialized for running auto-update scriptsLABEL_2003_10_14_2140
* Make 5200 reset command _really_ reset the board, without running
  any other code after it
* Fix flash mapping and display on P3G4 board
* Patch by Kyle Harris, 15 Jul 2003:
  - add support for Intel IXP425 CPU
  - add support for IXDP425 eval board
Diffstat (limited to 'cpu/ixp/timer.c')
| -rw-r--r-- | cpu/ixp/timer.c | 74 | 
1 files changed, 74 insertions, 0 deletions
| diff --git a/cpu/ixp/timer.c b/cpu/ixp/timer.c new file mode 100644 index 000000000..baa7e72b7 --- /dev/null +++ b/cpu/ixp/timer.c @@ -0,0 +1,74 @@ +/* vi: set ts=8 sw=8 noet: */ +/* + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Marius Groeger <mgroeger@sysgo.de> + * + * (C) Copyright 2002 + * Sysgo Real-Time Solutions, GmbH <www.elinos.com> + * Alex Zuepke <azu@sysgo.de> + * + * 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 <common.h> +#include <asm/arch/ixp425.h> + +void ixp425_udelay(unsigned long usec) +{ +	/* +	 * This function has a max usec, but since it is called from udelay +	 * we should not have to worry... be happy +	 */ +	unsigned long usecs = CFG_HZ/1000000L & ~IXP425_OST_RELOAD_MASK; + +	*IXP425_OSST = IXP425_OSST_TIMER_1_PEND; +	usecs |= IXP425_OST_ONE_SHOT | IXP425_OST_ENABLE; +	*IXP425_OSRT1 = usecs; +	while (!(*IXP425_OSST & IXP425_OSST_TIMER_1_PEND)); +} + +void udelay (unsigned long usec) +{ +	while (usec--) ixp425_udelay(1); +} + +static ulong reload_constant = 0xfffffff0; + +void reset_timer_masked (void) +{ +	ulong reload = reload_constant | IXP425_OST_ONE_SHOT | IXP425_OST_ENABLE; + +	*IXP425_OSST = IXP425_OSST_TIMER_1_PEND; +	*IXP425_OSRT1 = reload; +} + +ulong get_timer_masked (void) +{ +	/* +	 * Note that it is possible for this to wrap! +	 * In this case we return max. +	 */ +	ulong current = *IXP425_OST1; +	if (*IXP425_OSST & IXP425_OSST_TIMER_1_PEND) +	{ +		return reload_constant; +	} +	return (reload_constant - current); +} |