Imagelibrary/rtems
1
0
Fork 1
mirror of https://gitlab.rtems.org/rtems/rtos/rtems.git synced 2025-12-26 14:18:20 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add _CPU_Counter_frequency()

Browse Source 
Add rtems_counter_frequency() API function.  Use it to initialize the
counter value converter via the new system initialization step
(RTEMS_SYSINIT_CPU_COUNTER).  This decouples the counter implementation
and the counter converter.  It avoids an unnecessary pull in of the
64-bit integer division from libgcc.

Update #3456.
This commit is contained in:
Sebastian Huber
2018-05-23 14:17:25 +02:00
parent 4c7b18e358
commit 65f868cac6
80 changed files with 293 additions and 86 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
bsps/arm/shared/clock/clock-generic-timer.c
View File

@@ -166,6 +166,11 @@ static void arm_gt_clock_initialize(void)
rtems_timecounter_install(tc);
}
uint32_t _CPU_Counter_frequency(void)
{
return arm_gt_clock_instance.interval;
}
CPU_Counter_ticks _CPU_Counter_read(void)
{
return (uint32_t) arm_gt_clock_get_count();
@@ -179,14 +184,12 @@ static void arm_gt_clock_early_init(void)
&arm_gt_clock_instance.interval,
&arm_gt_clock_instance.irq
);
rtems_counter_initialize_converter(arm_gt_clock_instance.interval);
}
RTEMS_SYSINIT_ITEM(
arm_gt_clock_early_init,
RTEMS_SYSINIT_BSP_START,
RTEMS_SYSINIT_ORDER_LAST
RTEMS_SYSINIT_CPU_COUNTER,
RTEMS_SYSINIT_ORDER_FIRST
);
#define Clock_driver_support_at_tick() \