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riscv: Rework CPU counter support

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Update #3433.
This commit is contained in:
Sebastian Huber
2018-07-27 14:47:17 +02:00
parent 65f52d0060
commit cfc95736ff
5 changed files with 109 additions and 9 deletions
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22
bsps/riscv/riscv/clock/clockdrv.c
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@@ -32,15 +32,16 @@
* SUCH DAMAGE.
*/
#include <rtems/timecounter.h>
#include <rtems/score/cpuimpl.h>
#include <rtems/score/riscv-utility.h>
#include <bsp/fatal.h>
#include <bsp/fdt.h>
#include <bsp/irq.h>
#include <bsp/riscv.h>
#include <rtems/sysinit.h>
#include <rtems/timecounter.h>
#include <rtems/score/cpuimpl.h>
#include <rtems/score/riscv-utility.h>
#include <libfdt.h>
/* This is defined in dev/clock/clockimpl.h */
@@ -144,11 +145,24 @@ static void riscv_clock_initialize(void)
rtems_timecounter_install(&tc->base);
}
volatile uint32_t _RISCV_Counter_register;
static void riscv_counter_initialize(void)
{
_RISCV_Counter_mutable = &riscv_clint->mtime.val_32[0];
}
uint32_t _CPU_Counter_frequency( void )
{
return riscv_clock_get_timebase_frequency(bsp_fdt_get());
}
RTEMS_SYSINIT_ITEM(
riscv_counter_initialize,
RTEMS_SYSINIT_CPU_COUNTER,
RTEMS_SYSINIT_ORDER_FIRST
);
#define Clock_driver_support_at_tick() riscv_clock_at_tick(&riscv_clock_tc)
#define Clock_driver_support_initialize_hardware() riscv_clock_initialize()