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bsps/arm: Support system level ARM Generic Timer

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Update #4202.
This commit is contained in:
Sebastian Huber
2020-12-08 07:56:53 +01:00
parent 5efa15b49d
commit bd7bef528d
3 changed files with 51 additions and 1 deletions
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13
bsps/shared/dev/clock/arm-generic-timer.c
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@@ -138,11 +138,22 @@ CPU_Counter_ticks _CPU_Counter_read(void)
return (uint32_t) arm_gt_clock_get_count();
}
static void arm_gt_system_init(void)
{
#ifdef ARM_GENERIC_TIMER_SYSTEM_BASE
volatile uint32_t *cntcr;
cntcr = (volatile uint32_t *) ARM_GENERIC_TIMER_SYSTEM_BASE;
*cntcr = ARM_GENERIC_TIMER_SYSTEM_CNTCR;
#endif
}
static void arm_gt_clock_early_init(void)
{
uint32_t frequency;
arm_gt_clock_set_control(0x3);
arm_gt_system_init();
arm_gt_clock_set_control(0x3);
arm_generic_timer_get_config(
&frequency,
&arm_gt_clock_instance.irq