[U-Boot] [PATCH] bug fix for the delay function of ARM s3c44b0

[Chaofu Chen]

The original implementation of delay function of ARM s3c44b0 doesnt' cooperate 
with U-Boot kernel well, which will cause fake-time-out. What is important is 
to keep timestamp in unit of millisecond. 

diff -purN old/cpu/s3c44b0/interrupts.c new/cpu/s3c44b0/interrupts.c
--- old/cpu/s3c44b0/interrupts.c        2005-12-17 00:39:27.000000000 +0800
+++ new/cpu/s3c44b0/interrupts.c        2008-11-13 20:36:46.000000000 +0800
@@ -147,7 +147,7 @@ static ulong lastdec;
 int interrupt_init (void)
 {
        TCFG0 = 0x000000E9;
-       TCFG1 = 0x00000004;
+       TCFG1 = 0x00000040;
        TCON = 0x00000900;
        TCNTB1 = TIMER_LOAD_VAL;
        TCMPB1 = 0;
@@ -185,7 +185,7 @@ void udelay (unsigned long usec)
 
        tmo = usec / 1000;
        tmo *= CFG_HZ;
-       tmo /= 8;
+       tmo /= 1000;
 
        tmo += get_timer (0);
 
@@ -213,7 +213,7 @@ ulong get_timer_masked (void)
        }
        lastdec = now;
 
-       return timestamp;
+       return (timestamp >> 3);
 }
 
 void udelay_masked (unsigned long usec)
@@ -225,10 +225,9 @@ void udelay_masked (unsigned long usec)
        if (usec >= 1000) {
                tmo = usec / 1000;
                tmo *= CFG_HZ;
-               tmo /= 8;
+               tmo /= 1000;
        } else {
-               tmo = usec * CFG_HZ;
-               tmo /= (1000*8);
+               tmo = 1;
        }
 
        endtime = get_timer(0) + tmo;



      

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