74 lines
1.2 KiB
C
74 lines
1.2 KiB
C
/*
|
|
* (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>
|
|
*
|
|
* SPDX-License-Identifier: GPL-2.0+
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <SA-1100.h>
|
|
|
|
ulong get_timer (ulong base)
|
|
{
|
|
return get_timer_masked ();
|
|
}
|
|
|
|
void __udelay (unsigned long usec)
|
|
{
|
|
udelay_masked (usec);
|
|
}
|
|
|
|
ulong get_timer_masked (void)
|
|
{
|
|
return OSCR;
|
|
}
|
|
|
|
void udelay_masked (unsigned long usec)
|
|
{
|
|
ulong tmo;
|
|
ulong endtime;
|
|
signed long diff;
|
|
|
|
if (usec >= 1000) {
|
|
tmo = usec / 1000;
|
|
tmo *= CONFIG_SYS_HZ;
|
|
tmo /= 1000;
|
|
} else {
|
|
tmo = usec * CONFIG_SYS_HZ;
|
|
tmo /= (1000*1000);
|
|
}
|
|
|
|
endtime = get_timer_masked () + tmo;
|
|
|
|
do {
|
|
ulong now = get_timer_masked ();
|
|
diff = endtime - now;
|
|
} while (diff >= 0);
|
|
}
|
|
|
|
/*
|
|
* This function is derived from PowerPC code (read timebase as long long).
|
|
* On ARM it just returns the timer value.
|
|
*/
|
|
unsigned long long get_ticks(void)
|
|
{
|
|
return get_timer(0);
|
|
}
|
|
|
|
/*
|
|
* This function is derived from PowerPC code (timebase clock frequency).
|
|
* On ARM it returns the number of timer ticks per second.
|
|
*/
|
|
ulong get_tbclk (void)
|
|
{
|
|
ulong tbclk;
|
|
|
|
tbclk = CONFIG_SYS_HZ;
|
|
return tbclk;
|
|
}
|