Apply SoC concept to arm926ejs CPUs, i.e. move the SoC specific timer and

[u-boot] / cpu / arm926ejs / interrupts.c

diff --git a/cpu/arm926ejs/interrupts.c b/cpu/arm926ejs/interrupts.c
index 0457bff96457e24836b1aeb6acd871348cf555fc..9cac969f64abd775e359b94dfb73ac4528469b35 100644 (file)
--- a/cpu/arm926ejs/interrupts.c
+++ b/cpu/arm926ejs/interrupts.c
@@ -39,16 +39,6 @@
 #include <arm926ejs.h>
 #include <asm/proc-armv/ptrace.h>
 
-#define TIMER_LOAD_VAL 0xffffffff
-
-/* macro to read the 32 bit timer */
-#ifdef CONFIG_OMAP
-#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+8))
-#endif
-#ifdef CONFIG_VERSATILE
-#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4))
-#endif
-
 #ifdef CONFIG_USE_IRQ
 /* enable IRQ interrupts */
 void enable_interrupts (void)
@@ -188,146 +178,14 @@ void do_irq (struct pt_regs *pt_regs)
 
 #else
 
-static ulong timestamp;
-static ulong lastdec;
-
 /* nothing really to do with interrupts, just starts up a counter. */
 int interrupt_init (void)
 {
-#ifdef CONFIG_OMAP
-       int32_t val;
-
-       /* Start the decrementer ticking down from 0xffffffff */
-       *((int32_t *) (CFG_TIMERBASE + LOAD_TIM)) = TIMER_LOAD_VAL;
-       val = MPUTIM_ST | MPUTIM_AR | MPUTIM_CLOCK_ENABLE | (CFG_PVT << MPUTIM_PTV_BIT);
-       *((int32_t *) (CFG_TIMERBASE + CNTL_TIMER)) = val;
-#endif /* CONFIG_OMAP */
-
-#ifdef CONFIG_VERSATILE
-       *(volatile ulong *)(CFG_TIMERBASE + 0) = CFG_TIMER_RELOAD;      /* TimerLoad */
-       *(volatile ulong *)(CFG_TIMERBASE + 4) = CFG_TIMER_RELOAD;      /* TimerValue */
-       *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x8C;
-#endif /* CONFIG_VERSATILE */
-
-       /* init the timestamp and lastdec value */
-       reset_timer_masked();
-
-       return (0);
-}
-
-/*
- * timer without interrupts
- */
-
-void reset_timer (void)
-{
-       reset_timer_masked ();
-}
+       extern void timer_init(void);
 
-ulong get_timer (ulong base)
-{
-       return get_timer_masked () - base;
-}
+       timer_init();
 
-void set_timer (ulong t)
-{
-       timestamp = t;
-}
-
-/* delay x useconds AND perserve advance timstamp value */
-void udelay (unsigned long usec)
-{
-       ulong tmo, tmp;
-
-       if(usec >= 1000){               /* if "big" number, spread normalization to seconds */
-               tmo = usec / 1000;      /* start to normalize for usec to ticks per sec */
-               tmo *= CFG_HZ;          /* find number of "ticks" to wait to achieve target */
-               tmo /= 1000;            /* finish normalize. */
-       }else{                          /* else small number, don't kill it prior to HZ multiply */
-               tmo = usec * CFG_HZ;
-               tmo /= (1000*1000);
-       }
-
-       tmp = get_timer (0);            /* get current timestamp */
-       if( (tmo + tmp + 1) < tmp )     /* if setting this fordward will roll time stamp */
-               reset_timer_masked ();  /* reset "advancing" timestamp to 0, set lastdec value */
-       else
-               tmo += tmp;             /* else, set advancing stamp wake up time */
-
-       while (get_timer_masked () < tmo)/* loop till event */
-               /*NOP*/;
-}
-
-void reset_timer_masked (void)
-{
-       /* reset time */
-       lastdec = READ_TIMER;  /* capure current decrementer value time */
-       timestamp = 0;         /* start "advancing" time stamp from 0 */
-}
-
-ulong get_timer_masked (void)
-{
-       ulong now = READ_TIMER;         /* current tick value */
-
-       if (lastdec >= now) {           /* normal mode (non roll) */
-               /* normal mode */
-               timestamp += lastdec - now; /* move stamp fordward with absoulte diff ticks */
-       } else {                        /* we have overflow of the count down timer */
-               /* nts = ts + ld + (TLV - now)
-                * ts=old stamp, ld=time that passed before passing through -1
-                * (TLV-now) amount of time after passing though -1
-                * nts = new "advancing time stamp"...it could also roll and cause problems.
-                */
-               timestamp += lastdec + TIMER_LOAD_VAL - now;
-       }
-       lastdec = now;
-
-       return timestamp;
-}
-
-/* waits specified delay value and resets timestamp */
-void udelay_masked (unsigned long usec)
-{
-       ulong tmo;
-       ulong endtime;
-       signed long diff;
-
-       if (usec >= 1000) {             /* if "big" number, spread normalization to seconds */
-               tmo = usec / 1000;      /* start to normalize for usec to ticks per sec */
-               tmo *= CFG_HZ;          /* find number of "ticks" to wait to achieve target */
-               tmo /= 1000;            /* finish normalize. */
-       } else {                        /* else small number, don't kill it prior to HZ multiply */
-               tmo = usec * CFG_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 = CFG_HZ;
-       return tbclk;
+       return 0;
 }
 
 #endif /* CONFIG_INTEGRATOR */