mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-17 18:28:55 +00:00
2d5b561e2b
* 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
74 lines
2 KiB
C
74 lines
2 KiB
C
/* 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);
|
|
}
|