1 files changed, 3 insertions, 141 deletions

diff --git a/arch/nios2/cpu/interrupts.c b/arch/nios2/cpu/interrupts.c
index 9d7e193e284..1599674353c 100644
--- a/arch/nios2/cpu/interrupts.c
+++ b/arch/nios2/cpu/interrupts.c
@@ -8,43 +8,14 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
-
+#include <common.h>
+#include <command.h>
 #include <asm/nios2.h>
 #include <asm/types.h>
 #include <asm/io.h>
 #include <asm/ptrace.h>
-#include <common.h>
-#include <command.h>
-#include <watchdog.h>
-#ifdef CONFIG_STATUS_LED
-#include <status_led.h>
-#endif
-
-typedef volatile struct {
-	unsigned	status;			/* Timer status reg */
-	unsigned	control;		/* Timer control reg */
-	unsigned	periodl;		/* Timeout period low */
-	unsigned	periodh;		/* Timeout period high */
-	unsigned	snapl;			/* Snapshot low */
-	unsigned	snaph;			/* Snapshot high */
-} nios_timer_t;
-
-/* status register */
-#define NIOS_TIMER_TO		(1 << 0)	/* Timeout */
-#define NIOS_TIMER_RUN		(1 << 1)	/* Timer running */
-
-/* control register */
-#define NIOS_TIMER_ITO		(1 << 0)	/* Timeout int ena */
-#define NIOS_TIMER_CONT		(1 << 1)	/* Continuous mode */
-#define NIOS_TIMER_START	(1 << 2)	/* Start timer */
-#define NIOS_TIMER_STOP		(1 << 3)	/* Stop timer */
-
-#if defined(CONFIG_SYS_NIOS_TMRBASE) && !defined(CONFIG_SYS_NIOS_TMRIRQ)
-#error CONFIG_SYS_NIOS_TMRIRQ not defined (see documentation)
-#endif
-
-/****************************************************************************/
 
+/*************************************************************************/
 struct	irq_action {
 	interrupt_handler_t *handler;
 	void *arg;
@@ -53,111 +24,6 @@ struct	irq_action {
 
 static struct irq_action vecs[32];
 
-/*************************************************************************/
-volatile ulong timestamp = 0;
-
-void reset_timer (void)
-{
-	nios_timer_t *tmr =(nios_timer_t *)CONFIG_SYS_NIOS_TMRBASE;
-
-	/* From Embedded Peripherals Handbook:
-	 *
-	 * "When the hardware is configured with Writeable period
-	 * disabled, writing to one of the period_n registers causes
-	 * the counter to reset to the fixed Timeout Period specified
-	 * at system generation time."
-	 *
-	 * Here we force a reload to prevent early timeouts from
-	 * get_timer() when the interrupt period is greater than
-	 * than 1 msec.
-	 *
-	 * Simply write to periodl with its own value to force an
-	 * internal counter reload, THEN reset the timestamp.
-	 */
-	writel (readl (&tmr->periodl), &tmr->periodl);
-	timestamp = 0;
-
-	/* From Embedded Peripherals Handbook:
-	 *
-	 * "Writing to one of the period_n registers stops the internal
-	 * counter, except when the hardware is configured with Start/Stop
-	 * control bits off. If Start/Stop control bits is off, writing
-	 * either register does not stop the counter."
-	 *
-	 * In order to accomodate either configuration, the control
-	 * register is re-written. If the counter is stopped, it will
-	 * be restarted. If it is running, the write is essentially
-	 * a nop.
-	 */
-	writel (NIOS_TIMER_ITO | NIOS_TIMER_CONT | NIOS_TIMER_START,
-			&tmr->control);
-
-}
-
-ulong get_timer (ulong base)
-{
-	WATCHDOG_RESET ();
-	return (timestamp - base);
-}
-
-/*
- * This function is derived from Blackfin code (read timebase as long long).
- * On Nios2 it just returns the timer value.
- */
-unsigned long long get_ticks(void)
-{
-	return get_timer(0);
-}
-
-/*
- * This function is derived from Blackfin code.
- * On Nios2 it returns the number of timer ticks per second.
- */
-ulong get_tbclk(void)
-{
-	ulong tbclk;
-
-	tbclk = CONFIG_SYS_HZ;
-	return tbclk;
-}
-
-/* The board must handle this interrupt if a timer is not
- * provided.
- */
-#if defined(CONFIG_SYS_NIOS_TMRBASE)
-void tmr_isr (void *arg)
-{
-	nios_timer_t *tmr = (nios_timer_t *)arg;
-	/* Interrupt is cleared by writing anything to the
-	 * status register.
-	 */
-	writel (0, &tmr->status);
-	timestamp += CONFIG_SYS_NIOS_TMRMS;
-#ifdef CONFIG_STATUS_LED
-	status_led_tick(timestamp);
-#endif
-}
-
-static void tmr_init (void)
-{
-	nios_timer_t *tmr =(nios_timer_t *)CONFIG_SYS_NIOS_TMRBASE;
-
-	writel (0, &tmr->status);
-	writel (0, &tmr->control);
-	writel (NIOS_TIMER_STOP, &tmr->control);
-
-#if defined(CONFIG_SYS_NIOS_TMRCNT)
-	writel (CONFIG_SYS_NIOS_TMRCNT & 0xffff, &tmr->periodl);
-	writel ((CONFIG_SYS_NIOS_TMRCNT >> 16) & 0xffff, &tmr->periodh);
-#endif
-	writel (NIOS_TIMER_ITO | NIOS_TIMER_CONT | NIOS_TIMER_START,
-			&tmr->control);
-	irq_install_handler (CONFIG_SYS_NIOS_TMRIRQ, tmr_isr, (void *)tmr);
-}
-
-#endif /* CONFIG_SYS_NIOS_TMRBASE */
-
-/*************************************************************************/
 int disable_interrupts (void)
 {
 	int val = rdctl (CTL_STATUS);
@@ -245,10 +111,6 @@ int interrupt_init (void)
 		vecs[i].count = 0;
 	}
 
-#if defined(CONFIG_SYS_NIOS_TMRBASE)
-	tmr_init ();
-#endif
-
 	enable_interrupts ();
 	return (0);
 }