diff options
Diffstat (limited to 'board/integratorcp/integratorcp.c')
| -rw-r--r-- | board/integratorcp/integratorcp.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/board/integratorcp/integratorcp.c b/board/integratorcp/integratorcp.c index d6d6e13..72629ce 100644 --- a/board/integratorcp/integratorcp.c +++ b/board/integratorcp/integratorcp.c @@ -34,6 +34,7 @@ */ #include <common.h> +#include <div64.h> DECLARE_GLOBAL_DATA_PTR; @@ -142,7 +143,7 @@ extern void dram_query(void); * can be divided by 16 or 256 * and can be set up as a 32-bit timer */ -/* U-Boot expects a 32 bit timer, running at CFG_HZ */ +/* U-Boot expects a 32 bit timer, running at CONFIG_SYS_HZ */ /* Keep total timer count to avoid losing decrements < div_timer */ static unsigned long long total_count = 0; static unsigned long long lastdec; /* Timer reading at last call */ @@ -150,13 +151,13 @@ static unsigned long long div_clock = 1; /* Divisor applied to timer clock */ static unsigned long long div_timer = 1; /* Divisor to convert timer reading * change to U-Boot ticks */ -/* CFG_HZ = CFG_HZ_CLOCK/(div_clock * div_timer) */ +/* CONFIG_SYS_HZ = CONFIG_SYS_HZ_CLOCK/(div_clock * div_timer) */ static ulong timestamp; /* U-Boot ticks since startup */ #define TIMER_LOAD_VAL ((ulong)0xFFFFFFFF) -#define READ_TIMER (*(volatile ulong *)(CFG_TIMERBASE+4)) +#define READ_TIMER (*(volatile ulong *)(CONFIG_SYS_TIMERBASE+4)) -/* all function return values in U-Boot ticks i.e. (1/CFG_HZ) sec +/* all function return values in U-Boot ticks i.e. (1/CONFIG_SYS_HZ) sec * - unless otherwise stated */ @@ -165,7 +166,7 @@ static ulong timestamp; /* U-Boot ticks since startup */ int interrupt_init (void) { /* Load timer with initial value */ - *(volatile ulong *)(CFG_TIMERBASE + 0) = TIMER_LOAD_VAL; + *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 0) = TIMER_LOAD_VAL; /* Set timer to be * enabled 1 * periodic 1 @@ -175,12 +176,12 @@ int interrupt_init (void) * 32 bit 1 * wrapping 0 */ - *(volatile ulong *)(CFG_TIMERBASE + 8) = 0x000000C2; + *(volatile ulong *)(CONFIG_SYS_TIMERBASE + 8) = 0x000000C2; /* init the timestamp */ total_count = 0ULL; reset_timer_masked(); - div_timer = (unsigned long long)(CFG_HZ_CLOCK / CFG_HZ); + div_timer = (unsigned long long)(CONFIG_SYS_HZ_CLOCK / CONFIG_SYS_HZ); div_timer /= div_clock; return (0); @@ -211,7 +212,7 @@ void udelay (unsigned long usec) ulong tmo, tmp; /* Convert to U-Boot ticks */ - tmo = usec * CFG_HZ; + tmo = usec * CONFIG_SYS_HZ; tmo /= (1000000L); tmp = get_timer_masked(); /* get current timestamp */ @@ -244,7 +245,11 @@ ulong get_timer_masked (void) total_count += lastdec - now; } lastdec = now; - timestamp = (ulong)(total_count/div_timer); + + /* Reuse "now" */ + now = total_count; + do_div(now, div_timer); + timestamp = now; return timestamp; } @@ -270,5 +275,5 @@ unsigned long long get_ticks(void) */ ulong get_tbclk (void) { - return (ulong)(((unsigned long long)CFG_HZ_CLOCK)/div_clock); + return (ulong)(((unsigned long long)CONFIG_SYS_HZ_CLOCK)/div_clock); } |