mirror of
https://github.com/u-boot/u-boot.git
synced 2025-04-27 07:51:38 +00:00
d678a59d2d
When bringing in the series 'arm: dts: am62-beagleplay: Fix Beagleplay Ethernet"' I failed to notice that b4 noticed it was based on next and so took that as the base commit and merged that part of next to master. This reverts commitc8ffd1356d, reversing changes made to2ee6f3a5f7. Reported-by: Jonas Karlman <jonas@kwiboo.se> Signed-off-by: Tom Rini <trini@konsulko.com>
96 lines
1.9 KiB
C
96 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0+
|
|
/*
|
|
* (C) Copyright 2000-2002
|
|
* Wolfgang Denk, DENX Software Engineering, wd@denx.de.
|
|
*
|
|
* (C) Copyright 2003
|
|
* Gleb Natapov <gnatapov@mrv.com>
|
|
*/
|
|
|
|
#include <common.h>
|
|
#include <irq_func.h>
|
|
#include <asm/processor.h>
|
|
#include <watchdog.h>
|
|
#ifdef CONFIG_LED_STATUS
|
|
#include <status_led.h>
|
|
#endif
|
|
#include <asm/ptrace.h>
|
|
|
|
#ifndef CONFIG_MPC83XX_TIMER
|
|
#ifndef CFG_SYS_WATCHDOG_FREQ
|
|
#define CFG_SYS_WATCHDOG_FREQ (CONFIG_SYS_HZ / 2)
|
|
#endif
|
|
|
|
static unsigned decrementer_count; /* count value for 1e6/HZ microseconds */
|
|
|
|
static __inline__ unsigned long get_dec (void)
|
|
{
|
|
unsigned long val;
|
|
|
|
asm volatile ("mfdec %0":"=r" (val):);
|
|
|
|
return val;
|
|
}
|
|
|
|
|
|
static __inline__ void set_dec (unsigned long val)
|
|
{
|
|
if (val)
|
|
asm volatile ("mtdec %0"::"r" (val));
|
|
}
|
|
#endif /* !CONFIG_MPC83XX_TIMER */
|
|
|
|
void enable_interrupts(void)
|
|
{
|
|
set_msr (get_msr () | MSR_EE);
|
|
}
|
|
|
|
/* returns flag if MSR_EE was set before */
|
|
int disable_interrupts(void)
|
|
{
|
|
ulong msr = get_msr ();
|
|
|
|
set_msr (msr & ~MSR_EE);
|
|
return ((msr & MSR_EE) != 0);
|
|
}
|
|
|
|
#ifndef CONFIG_MPC83XX_TIMER
|
|
int interrupt_init(void)
|
|
{
|
|
/* call cpu specific function from $(CPU)/interrupts.c */
|
|
interrupt_init_cpu (&decrementer_count);
|
|
|
|
set_dec (decrementer_count);
|
|
|
|
set_msr (get_msr () | MSR_EE);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static volatile ulong timestamp = 0;
|
|
|
|
void timer_interrupt(struct pt_regs *regs)
|
|
{
|
|
/* call cpu specific function from $(CPU)/interrupts.c */
|
|
timer_interrupt_cpu (regs);
|
|
|
|
/* Restore Decrementer Count */
|
|
set_dec (decrementer_count);
|
|
|
|
timestamp++;
|
|
|
|
#if defined(CONFIG_WATCHDOG) || defined (CONFIG_HW_WATCHDOG)
|
|
if (CFG_SYS_WATCHDOG_FREQ && (timestamp % (CFG_SYS_WATCHDOG_FREQ)) == 0)
|
|
schedule();
|
|
#endif /* CONFIG_WATCHDOG || CONFIG_HW_WATCHDOG */
|
|
|
|
#ifdef CONFIG_LED_STATUS
|
|
status_led_tick(timestamp);
|
|
#endif /* CONFIG_LED_STATUS */
|
|
}
|
|
|
|
ulong get_timer (ulong base)
|
|
{
|
|
return (timestamp - base);
|
|
}
|
|
#endif /* !CONFIG_MPC83XX_TIMER */
|