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leon: restart and load timer counter at initialization

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Without this smp05 and smpthreadlife01 tests may fail
depending on how the boot loader initialized the GPTIMER.
Before the time counter stopped counting when reaching
zero, but tests could work since it could take 2^32 us
before stopping.

The timer driver will potentially overwrite this, but it
happens later due to the initialization order having
RTEMS_SYSINIT_CPU_COUNTER very early.
This commit is contained in:
Daniel Hellstrom
2019-10-29 15:17:57 +01:00
parent 9c00cc1301
commit dfe7901c7f
1 changed files with 4 additions and 1 deletions
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5
bsps/sparc/leon3/start/cpucounter.c
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@@ -60,7 +60,10 @@ static void leon3_counter_initialize(void)
counter->counter_register = &gpt->timer[LEON3_COUNTER_GPTIMER_INDEX].value;
/* Enable timer just in case no clock driver is configured */
gpt->timer[LEON3_COUNTER_GPTIMER_INDEX].ctrl |= GPTIMER_TIMER_CTRL_EN;
gpt->timer[LEON3_COUNTER_GPTIMER_INDEX].reload = 0xffffffff;
gpt->timer[LEON3_COUNTER_GPTIMER_INDEX].ctrl |= GPTIMER_TIMER_CTRL_EN |
GPTIMER_TIMER_CTRL_RS |
GPTIMER_TIMER_CTRL_LD;
leon3_counter_frequency = ambapp_freq_get(&ambapp_plb, LEON3_Timer_Adev) /
(gpt->scaler_reload + 1);