diff options
Diffstat (limited to 'cpu/arm926ejs/mx25')
| -rw-r--r-- | cpu/arm926ejs/mx25/Makefile | 2 | ||||
| -rw-r--r-- | cpu/arm926ejs/mx25/timer.c (renamed from cpu/arm926ejs/mx25/interrupts.c) | 24 |
2 files changed, 20 insertions, 6 deletions
diff --git a/cpu/arm926ejs/mx25/Makefile b/cpu/arm926ejs/mx25/Makefile index 74add9d..48b4e7d 100644 --- a/cpu/arm926ejs/mx25/Makefile +++ b/cpu/arm926ejs/mx25/Makefile @@ -25,7 +25,7 @@ include $(TOPDIR)/config.mk LIB = $(obj)lib$(SOC).a -COBJS = interrupts.o serial.o generic.o iomux.o gpio.o +COBJS = timer.o serial.o generic.o iomux.o gpio.o SRCS := $(SOBJS:.o=.S) $(COBJS:.o=.c) OBJS := $(addprefix $(obj),$(SOBJS) $(COBJS)) diff --git a/cpu/arm926ejs/mx25/interrupts.c b/cpu/arm926ejs/mx25/timer.c index cbd5d09..8b6a061 100644 --- a/cpu/arm926ejs/mx25/interrupts.c +++ b/cpu/arm926ejs/mx25/timer.c @@ -43,17 +43,29 @@ static ulong timestamp; static ulong lastinc; -/* nothing really to do with interrupts, just starts up a counter. */ -int interrupt_init(void) +static inline void setup_gpt() { int i; + static int init_done; + + if (init_done) + return; + + init_done = 1; /* setup GP Timer 1 */ GPTCR = GPTCR_SWR; for (i = 0; i < 100; i++) - GPTCR = 0; /* We have no udelay by now */ - GPTPR = 0; /* 32Khz */ - GPTCR |= GPTCR_CLKSOURCE_32 | GPTCR_TEN; /* Freerun Mode, PERCLK1 in */ + GPTCR = 0; /* We have no udelay by now */ + GPTPR = 0; /* 32Khz */ + /* Freerun Mode, PERCLK1 input */ + GPTCR |= GPTCR_CLKSOURCE_32 | GPTCR_TEN; +} + +/* nothing really to do with interrupts, just starts up a counter. */ +int timer_init(void) +{ + setup_gpt(); return 0; } @@ -97,6 +109,8 @@ void udelay(unsigned long usec) { ulong tmo, tmp; + setup_gpt(); + if (usec >= 1000) { /* if "big" number, spread normalize to secs */ tmo = usec / 1000; /* normalize usec to ticks per sec */ tmo *= CONFIG_SYS_HZ; /* find number of "ticks" to wait */ |