diff options
Diffstat (limited to 'sys/i386/isa/clock.c')
| -rw-r--r-- | sys/i386/isa/clock.c | 23 |
1 files changed, 10 insertions, 13 deletions
diff --git a/sys/i386/isa/clock.c b/sys/i386/isa/clock.c index bc0bf61..29ddd39 100644 --- a/sys/i386/isa/clock.c +++ b/sys/i386/isa/clock.c @@ -106,11 +106,11 @@ int statclock_disable; u_int timer_freq = TIMER_FREQ; int timer0_max_count; int timer0_real_max_count; -struct mtx clock_lock; #define RTC_LOCK mtx_lock_spin(&clock_lock) #define RTC_UNLOCK mtx_unlock_spin(&clock_lock) static int beeping = 0; +static struct mtx clock_lock; static struct intsrc *i8254_intsrc; static u_int32_t i8254_lastcount; static u_int32_t i8254_offset; @@ -302,13 +302,6 @@ DELAY(int n) printf("DELAY(%d)...", n); #endif /* - * Guard against the timer being uninitialized if we are called - * early for console i/o. - */ - if (timer0_max_count == 0) - set_timer_freq(timer_freq, hz); - - /* * Read the counter first, so that the rest of the setup overhead is * counted. Guess the initial overhead is 20 usec (on most systems it * takes about 1.5 usec for each of the i/o's in getit(). The loop @@ -605,10 +598,15 @@ timer_restore(void) rtc_restore(); /* reenable RTC interrupts */ } -/* - * Initialize 8254 timer 0 early so that it can be used in DELAY(). - * XXX initialization of other timers is unintentionally left blank. - */ +/* This is separate from startrtclock() so that it can be called early. */ +void +i8254_init(void) +{ + + mtx_init(&clock_lock, "clk", NULL, MTX_SPIN | MTX_NOPROFILE); + set_timer_freq(timer_freq, hz); +} + void startrtclock() { @@ -617,7 +615,6 @@ startrtclock() writertc(RTC_STATUSA, rtc_statusa); writertc(RTC_STATUSB, RTCSB_24HR); - set_timer_freq(timer_freq, hz); freq = calibrate_clocks(); #ifdef CLK_CALIBRATION_LOOP if (bootverbose) { |
